/* ==========================================================================
   Yuanda Packaging - site stylesheet
   Single-file, no external dependencies. Edit colours in :root only.
   ========================================================================== */

:root {
  --ink: #101b26;
  --ink-soft: #1b2a38;
  --body: #46586a;
  --muted: #7c8b99;
  --line: #e2e8ee;
  --bg: #f6f8fa;
  --white: #ffffff;
  --accent: #d97b28;
  --accent-dark: #bd6718;
  --accent-soft: #fbf1e6;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 1px 2px rgba(16, 27, 38, 0.04), 0 10px 30px rgba(16, 27, 38, 0.07);
  --shadow-lg: 0 2px 6px rgba(16, 27, 38, 0.05), 0 24px 60px rgba(16, 27, 38, 0.12);
  --wrap: 1160px;
  --font: "Inter", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  color: var(--body);
  background: var(--white);
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; display: block; }

a { color: var(--ink); text-decoration: none; }
a:hover { color: var(--accent); }

h1, h2, h3, h4 {
  margin: 0;
  color: var(--ink);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.1rem, 4vw, 3.15rem); }
h2 { font-size: clamp(1.7rem, 3vw, 2.5rem); }
h3 { font-size: 1.18rem; letter-spacing: -0.01em; }
h4 { font-size: 1rem; }

p { margin: 0 0 1rem; }
p:last-child { margin-bottom: 0; }

ul { margin: 0; padding: 0; list-style: none; }

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

.section { padding: 84px 0; }
.section--tight { padding: 60px 0; }
.section--bg { background: var(--bg); }
.section--ink { background: var(--ink); }
.section--ink h2, .section--ink h3 { color: #fff; }
.section--ink p { color: #b9c5d1; }

.eyebrow {
  display: inline-block;
  margin-bottom: 16px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}
.section--ink .eyebrow { color: #e9a55f; }

.section-head { max-width: 720px; margin-bottom: 46px; }
.section-head.is-center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head p { margin-top: 14px; font-size: 1.03rem; }

/* ============================ Buttons ============================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 14px 26px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: inherit;
  font-size: 0.94rem;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}
.btn svg { width: 17px; height: 17px; flex: none; }

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 6px 18px rgba(217, 123, 40, 0.24);
}
.btn-primary:hover { background: var(--accent-dark); color: #fff; transform: translateY(-1px); box-shadow: 0 10px 24px rgba(217, 123, 40, 0.3); }

.btn-ghost { background: transparent; color: var(--ink); border-color: #ccd6df; }
.btn-ghost:hover { border-color: var(--ink); color: var(--ink); background: #fff; }

.btn-light { background: #fff; color: var(--ink); }
.btn-light:hover { background: #f1f4f7; color: var(--ink); }

.btn-sm { padding: 11px 20px; font-size: 0.88rem; }

.btn-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }

.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--ink);
}
.arrow-link svg { width: 15px; height: 15px; transition: transform 0.18s ease; }
.arrow-link:hover svg { transform: translateX(4px); }

/* ============================ Top bar + header ============================ */

.topbar {
  background: var(--ink);
  color: #9fadba;
  font-size: 0.8rem;
}
.topbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 38px;
}
.topbar-left { letter-spacing: 0.04em; }
.topbar-right { display: flex; align-items: center; gap: 20px; }
.topbar a { color: #cfd8e1; display: inline-flex; align-items: center; gap: 6px; }
.topbar a:hover { color: #fff; }
.topbar svg { width: 13px; height: 13px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.2s ease;
}
.site-header.is-stuck { box-shadow: 0 6px 24px rgba(16, 27, 38, 0.07); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
}

.brand { display: flex; align-items: center; gap: 11px; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--ink);
  color: #fff;
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -0.03em;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-text strong { font-size: 1.02rem; font-weight: 800; letter-spacing: 0.08em; color: var(--ink); }
.brand-text em {
  font-style: normal;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.24em;
  color: var(--muted);
}

.nav { display: flex; align-items: center; gap: 30px; }
.nav-link {
  position: relative;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--body);
  padding: 6px 0;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.2s ease;
}
.nav-link:hover { color: var(--ink); }
.nav-link:hover::after, .nav-link.active::after { width: 100%; }
.nav-link.active { color: var(--ink); font-weight: 600; }
.nav-cta { margin-left: 4px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  padding: 0 10px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  cursor: pointer;
}
.nav-toggle span { display: block; height: 2px; background: var(--ink); border-radius: 2px; transition: transform 0.22s ease, opacity 0.22s ease; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================ Hero ============================ */

.hero {
  position: relative;
  padding: 76px 0 84px;
  background:
    radial-gradient(900px 460px at 88% -6%, rgba(217, 123, 40, 0.1), transparent 62%),
    linear-gradient(180deg, #ffffff 0%, #f7f9fb 100%);
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  align-items: center;
  gap: 56px;
}
.hero h1 { margin-bottom: 20px; }
.hero h1 span { color: var(--accent); }
.hero-lead { font-size: 1.08rem; max-width: 520px; color: var(--body); }

.hero-tags { display: none; }

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 13px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.79rem;
  font-weight: 600;
  color: var(--ink-soft);
  letter-spacing: 0.01em;
}
.chip svg { width: 13px; height: 13px; color: var(--accent); }

.hero-media { position: relative; }
.hero-media .frame {
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(16, 27, 38, 0.07);
  background: #e8eef3;
}
.hero-media .frame img { width: 100%; height: auto; }

.float-card {
  position: absolute;
  left: -26px;
  bottom: 34px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px 20px;
  background: #fff;
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--line);
}
.float-card .fc-num { font-size: 1.5rem; font-weight: 800; color: var(--ink); letter-spacing: -0.03em; line-height: 1; }
.float-card .fc-label { font-size: 0.72rem; line-height: 1.35; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; font-weight: 600; }
.float-card .fc-div { width: 1px; height: 34px; background: var(--line); }

/* ============================ Stat strip ============================ */

.stat-strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; }
.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
}
.stat {
  background: #fff;
  padding: 30px 26px;
  text-align: center;
}
.stat strong { display: block; font-size: 1.9rem; font-weight: 800; color: var(--ink); letter-spacing: -0.03em; line-height: 1.1; }
.stat span { display: block; margin-top: 6px; font-size: 0.78rem; font-weight: 600; letter-spacing: 0.09em; text-transform: uppercase; color: var(--muted); }

/* ============================ Cards / products ============================ */

.card-grid { display: grid; gap: 24px; }
.card-grid--3 { grid-template-columns: repeat(3, 1fr); }
.card-grid--2 { grid-template-columns: repeat(2, 1fr); }
.card-grid--4 { grid-template-columns: repeat(4, 1fr); }

.product-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: #d3dce5; }
.product-card .pc-media { background: #eef2f6; border-bottom: 1px solid var(--line); }
.product-card .pc-media img { width: 100%; height: 280px; object-fit: cover; object-position: center 25%; }
.product-card .pc-body { padding: 24px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.product-card h3 { margin-bottom: 8px; }
.product-card p { font-size: 0.94rem; margin-bottom: 18px; }
.product-card .pc-specs { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 20px; }
.pc-specs li {
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--ink-soft);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 4px 8px;
}
.product-card .arrow-link { margin-top: auto; }

/* ============================ Feature rows ============================ */

.feature-list { display: grid; gap: 28px; grid-template-columns: repeat(2, 1fr); }
.feature { display: flex; gap: 16px; }
.feature-icon {
  flex: none;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 11px;
  background: var(--accent-soft);
  color: var(--accent-dark);
}
.feature-icon svg { width: 20px; height: 20px; }
.feature h4 { margin-bottom: 5px; }
.feature p { font-size: 0.92rem; margin: 0; }
.section--ink .feature-icon { background: rgba(217, 123, 40, 0.16); color: #e9a55f; }
.section--ink .feature h4 { color: #fff; }

.section--ink .feature p { color: #a8b6c3; }

/* ============================ Split (image + text) ============================ */

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.split.is-reverse .split-media { order: 2; }
.split-media .frame { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); box-shadow: var(--shadow); background: #eef2f6; }
.split-body p { font-size: 0.98rem; }

.check-list { display: grid; gap: 11px; margin: 22px 0 0; }
.check-list li { position: relative; padding-left: 28px; font-size: 0.94rem; color: var(--body); }
.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 17px;
  height: 17px;
  border-radius: 50%;
  background: var(--accent-soft);
}
.check-list li::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  width: 7px;
  height: 4px;
  border-left: 2px solid var(--accent-dark);
  border-bottom: 2px solid var(--accent-dark);
  transform: rotate(-45deg);
}
.section--ink .check-list li { color: #b9c5d1; }
.section--ink .check-list li::before { background: rgba(217, 123, 40, 0.2); }
.section--ink .check-list li::after { border-color: #e9a55f; }
.section--ink .frame { border-color: rgba(255, 255, 255, 0.1); }

/* ============================ Applications tags ============================ */

.tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; }
.tag-cloud li {
  padding: 9px 16px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--ink-soft);
}
.section--ink .tag-cloud li { background: rgba(255, 255, 255, 0.05); border-color: rgba(255, 255, 255, 0.12); color: #dbe3ea; }

/* ============================ Spec table ============================ */

.spec-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
table.spec { width: 100%; border-collapse: collapse; font-size: 0.9rem; min-width: 560px; }
table.spec th, table.spec td { padding: 13px 18px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
table.spec thead th {
  background: #f1f5f8;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
table.spec tbody tr:last-child td { border-bottom: 0; }
table.spec td:first-child { font-weight: 600; color: var(--ink); white-space: nowrap; }
table.spec tbody tr:hover { background: #fafcfd; }

.product-block { padding: 74px 0; border-bottom: 1px solid var(--line); scroll-margin-top: 96px; }
.product-block:last-child { border-bottom: 0; }
.product-block-head { display: grid; grid-template-columns: 1fr 1fr; gap: 54px; align-items: center; margin-bottom: 40px; }
.product-block-head .frame { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); background: #eef2f6; }
.product-block-head .frame img { width: 100%; max-height: 460px; object-fit: cover; object-position: center 30%; }
.product-block-head h2 { margin-bottom: 14px; }

.option-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px 28px; margin-top: 26px; }
.option { display: flex; justify-content: space-between; gap: 16px; padding: 11px 0; border-bottom: 1px dashed var(--line); font-size: 0.9rem; }
.option dt { color: var(--muted); }
.option dd { margin: 0; font-weight: 600; color: var(--ink); text-align: right; }

/* ============================ CTA band ============================ */

.cta-band {
  position: relative;
  background: var(--ink);
  overflow: hidden;
  padding: 68px 0;
}
.cta-band::after {
  content: "";
  position: absolute;
  right: -120px;
  top: -120px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(217, 123, 40, 0.28), transparent 68%);
}
.cta-inner { position: relative; display: flex; align-items: center; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.cta-inner h2 { color: #fff; max-width: 620px; }
.cta-inner p { color: #a8b6c3; margin-top: 10px; max-width: 560px; }

/* ============================ Steps ============================ */

.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; counter-reset: step; }
.step { counter-increment: step; }
.step::before {
  content: "0" counter(step);
  display: block;
  margin-bottom: 12px;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.02em;
}
.step h4 { margin-bottom: 6px; }
.step p { font-size: 0.9rem; margin: 0; }

/* ============================ Certificates ============================ */

.cert-row { display: flex; flex-wrap: wrap; gap: 14px; }
.cert {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  min-width: 200px;
}
.cert strong { display: block; font-size: 0.9rem; color: var(--ink); }
.cert span { display: block; font-size: 0.76rem; color: var(--muted); }

/* ============================ Page header ============================ */

.page-head {
  background:
    radial-gradient(700px 380px at 82% 0%, rgba(217, 123, 40, 0.09), transparent 65%),
    linear-gradient(180deg, #fff 0%, #f7f9fb 100%);
  padding: 64px 0 56px;
  border-bottom: 1px solid var(--line);
}
.page-head h1 { margin-bottom: 14px; }
.page-head p { max-width: 640px; font-size: 1.02rem; }
.crumbs { font-size: 0.8rem; color: var(--muted); margin-bottom: 14px; }
.crumbs a { color: var(--muted); }
.crumbs a:hover { color: var(--accent); }
.crumbs span { margin: 0 7px; opacity: 0.6; }

/* ============================ Contact ============================ */

.contact-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 44px; align-items: start; }

.form-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px;
  box-shadow: var(--shadow);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 16px; }
.field label { display: block; margin-bottom: 7px; font-size: 0.82rem; font-weight: 600; color: var(--ink); }
.field label .req { color: var(--accent); }
.field input, .field select, .field textarea {
  width: 100%;
  padding: 12px 14px;
  font-family: inherit;
  font-size: 0.93rem;
  color: var(--ink);
  background: #fbfcfd;
  border: 1px solid #d8e0e8;
  border-radius: var(--radius-sm);
  transition: border-color 0.16s ease, box-shadow 0.16s ease, background-color 0.16s ease;
}
.field textarea { min-height: 132px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  background: #fff;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(217, 123, 40, 0.14);
}
.field input:invalid:not(:placeholder-shown) { border-color: #d9534f; }
.form-note { font-size: 0.79rem; color: var(--muted); margin-top: 14px; }
.hp-field { position: absolute; left: -9999px; opacity: 0; height: 0; }

.info-card {
  background: var(--ink);
  border-radius: var(--radius);
  padding: 32px;
  color: #cfd8e1;
}
.info-card h3 { color: #fff; margin-bottom: 8px; }
.info-card > p { color: #9fadba; font-size: 0.92rem; }
.info-list { display: grid; gap: 18px; margin-top: 26px; }
.info-item { display: flex; gap: 14px; }
.info-item .ii-icon {
  flex: none;
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.07);
  color: #e9a55f;
}
.info-item .ii-icon svg { width: 17px; height: 17px; }
.info-item .ii-label { font-size: 0.7rem; letter-spacing: 0.12em; text-transform: uppercase; color: #7f8fa0; font-weight: 700; }
.info-item .ii-value { font-size: 0.95rem; color: #fff; font-weight: 500; word-break: break-word; }
.info-item a.ii-value:hover { color: #e9a55f; }

.reply-note {
  margin-top: 28px;
  padding: 14px 16px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.85rem;
  color: #b9c5d1;
}
.reply-note strong { color: #fff; }

/* ============================ Footer ============================ */

.site-footer { background: #0b141d; color: #8ea0b1; padding: 62px 0 0; font-size: 0.9rem; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 44px;
}
.site-footer .brand-text strong { color: #fff; }
.site-footer .brand-text em { color: #6f8194; }
.site-footer .brand-mark { background: #fff; color: var(--ink); }
.footer-about { margin-top: 18px; max-width: 320px; font-size: 0.88rem; line-height: 1.7; color: #8ea0b1; }
.footer-col h5 {
  margin: 0 0 16px;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #fff;
}
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: #8ea0b1; }
.footer-col a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.09);
  padding: 20px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  font-size: 0.8rem;
  color: #6f8194;
}

/* ============================ Reveal animation ============================ */

.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.55s ease, transform 0.55s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ============================ Floating WhatsApp ============================ */

.wa-float {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 70;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 19px 13px 15px;
  background: #25d366;
  color: #fff;
  font-size: 0.88rem;
  font-weight: 700;
  border-radius: 999px;
  box-shadow: 0 10px 28px rgba(37, 211, 102, 0.34);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.wa-float:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 14px 34px rgba(37, 211, 102, 0.42); }
.wa-float svg { width: 20px; height: 20px; }

/* ============================ Responsive ============================ */

@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-media { max-width: 620px; }
  .float-card { left: auto; right: 18px; bottom: -18px; }
  .split { grid-template-columns: 1fr; gap: 34px; }
  .split.is-reverse .split-media { order: 0; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .product-block-head { grid-template-columns: 1fr; gap: 30px; }
  .card-grid--4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .topbar-left { display: none; }
  .topbar .container { justify-content: center; }
  .nav-toggle { display: flex; }
  .nav {
    position: fixed;
    left: 0;
    right: 0;
    top: 72px;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 20px 24px;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 18px 40px rgba(16, 27, 38, 0.12);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
  }
  .nav.is-open { opacity: 1; transform: none; pointer-events: auto; }
  .nav-link { padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 1rem; }
  .nav-link::after { display: none; }
  .nav-cta { margin: 18px 0 0; width: 100%; }
  .section { padding: 60px 0; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .card-grid--3, .card-grid--2 { grid-template-columns: 1fr; }
  .feature-list { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .option-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .form-card { padding: 24px; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 560px) {
  .container { padding: 0 18px; }
  .topbar { display: none; }
  h1 { font-size: clamp(1.85rem, 8vw, 2.4rem); }
  .hero { padding: 48px 0 64px; }
  .card-grid--4 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .float-card { position: static; margin-top: 16px; border-radius: 12px; }
  .wa-float { padding: 12px 14px; }
  .wa-float span { display: none; }
}

/* ---- Products dropdown nav ---- */
.nav-item { position: relative; }
.nav-item > .nav-link { display: inline-flex; align-items: center; gap: 5px; }
.nav-caret { width: 9px; height: 7px; stroke: currentColor; fill: none; transition: transform 0.18s ease; }
.nav-drop {
  position: absolute;
  top: calc(100% + 12px);
  left: -14px;
  min-width: 250px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 18px 44px rgba(16, 27, 38, 0.13);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: opacity 0.16s ease, transform 0.16s ease, visibility 0.16s;
  z-index: 70;
}
.nav-drop::before { content: ""; position: absolute; top: -14px; left: 0; right: 0; height: 14px; }
.nav-item:hover .nav-drop,
.nav-item:focus-within .nav-drop { opacity: 1; visibility: visible; transform: none; }
.nav-item:hover .nav-caret { transform: rotate(180deg); }
.nav-drop a {
  display: block;
  padding: 9px 12px;
  border-radius: 8px;
  font-size: 0.9rem;
  color: var(--body);
  text-decoration: none;
}
.nav-drop a:hover { background: #f2f6fa; color: var(--ink); }
.nav-drop a::after { display: none; }

@media (max-width: 900px) {
  .nav-drop {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    border-left: 2px solid var(--line);
    border-radius: 0;
    margin: 2px 0 10px 4px;
    padding: 0 0 0 10px;
    min-width: 0;
  }
  .nav-item > .nav-link { padding: 10px 0; }
  .nav-caret { display: none; }
}

/* ---- Packing worked example ---- */
.pack-example {
  display: flex;
  gap: 28px;
  align-items: center;
  margin-top: 28px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 24px 28px;
}
.pack-example img {
  width: 200px;
  max-width: 32%;
  height: auto;
  border-radius: 10px;
  border: 1px solid var(--line);
  flex-shrink: 0;
}
.pack-example h3 { margin: 2px 0 12px; font-size: 1.05rem; color: var(--ink); }
.pack-example ul { margin: 0; padding-left: 20px; font-size: 0.95rem; color: var(--body); }
.pack-example li { margin-bottom: 7px; }

@media (max-width: 700px) {
  .pack-example { flex-direction: column; }
  .pack-example img { width: 100%; max-width: 380px; }
}