/* ==========================================================================
   BONGSHAI CONCRETE BLOCK
   Industrial-premium landing page — design system + components
   Dark theme, committed single look. Amber = strength / safety signal.
   ========================================================================== */

/* ---- RESET & BASE ------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  color-scheme: dark;

  /* Surfaces */
  --clr-bg:          hsl(220, 16%, 7.5%);
  --clr-bg-2:        hsl(220, 14%, 10%);
  --clr-bg-card:     hsl(220, 13%, 12.5%);
  --clr-bg-card-2:   hsl(220, 11%, 16%);

  /* Brand */
  --clr-accent:      hsl(38, 95%, 53%);
  --clr-accent-2:    hsl(45, 96%, 62%);
  --clr-accent-dim:  hsl(34, 68%, 44%);
  --clr-accent-ink:  hsl(30, 45%, 8%);
  --clr-accent-glow: hsla(38, 95%, 53%, 0.16);

  /* Semantic */
  --clr-green:       hsl(148, 58%, 52%);
  --clr-red:         hsl(2, 78%, 62%);
  --clr-amber-warn:  hsl(42, 90%, 60%);

  /* Text */
  --clr-text:        hsl(220, 14%, 94%);
  --clr-text-muted:  hsl(220, 11%, 68%);
  --clr-text-dim:    hsl(220, 10%, 52%);

  /* Lines */
  --clr-border:      hsla(220, 14%, 60%, 0.13);
  --clr-border-2:    hsla(220, 14%, 62%, 0.24);
  --clr-wa:          hsl(145, 63%, 42%);

  /* Radii */
  --radius-xs:       6px;
  --radius-sm:       10px;
  --radius-md:       16px;
  --radius-lg:       24px;
  --radius-xl:       32px;

  /* Elevation */
  --shadow-sm:       0 2px 12px hsla(0,0%,0%,0.35);
  --shadow-card:     0 8px 40px hsla(0,0%,0%,0.42);
  --shadow-lg:       0 24px 70px hsla(0,0%,0%,0.55);
  --shadow-glow:     0 0 64px hsla(38,95%,53%,0.16);

  /* Type */
  --font-main:       'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display:    'Rajdhani', 'Inter', -apple-system, sans-serif;

  /* Motion */
  --ease:            cubic-bezier(0.22, 1, 0.36, 1);
  --transition:      0.24s var(--ease);

  /* Layout */
  --max-w:           1240px;
  --max-w-text:      760px;
  --gutter:          clamp(20px, 5vw, 40px);
}

html { -webkit-text-size-adjust: 100%; font-size: 100%; scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  font-family: var(--font-main);
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, picture, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font: inherit; color: inherit; }
address { font-style: normal; }
ul { list-style: none; }
h1, h2, h3, h4 { text-wrap: balance; }
p { text-wrap: pretty; }
:target { scroll-margin-top: 90px; }

/* ---- ACCESSIBILITY HELPERS ------------------------------------------- */
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%);
  white-space: nowrap; border: 0;
}

.skip-link {
  position: fixed; top: 10px; left: 10px; z-index: 2000;
  background: var(--clr-accent); color: var(--clr-accent-ink);
  font-weight: 700; font-size: 0.9rem;
  padding: 12px 20px; border-radius: var(--radius-sm);
  transform: translateY(-160%);
  transition: transform var(--transition);
}
.skip-link:focus-visible { transform: translateY(0); outline: 2px solid #fff; outline-offset: 2px; }
#main:focus { outline: none; }

:focus-visible {
  outline: 2px solid var(--clr-accent-2);
  outline-offset: 3px;
  border-radius: 3px;
}
.hero-img, .product-img { outline-offset: 4px; }

/* ---- LAYOUT UTILITIES ------------------------------------------------ */
.container { max-width: var(--max-w); margin: 0 auto; padding-inline: var(--gutter); }
.section { padding-block: clamp(64px, 9vw, 112px); position: relative; }

.gradient-text {
  background: linear-gradient(103deg, var(--clr-accent), var(--clr-accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.section-tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-display);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--clr-accent);
  background: var(--clr-accent-glow);
  border: 1px solid hsla(38,95%,53%,0.3);
  padding: 6px 15px;
  border-radius: 100px;
  margin-bottom: 20px;
}
.section-header { text-align: center; max-width: var(--max-w-text); margin: 0 auto clamp(44px, 6vw, 68px); }
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 1.1rem + 2.7vw, 2.9rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--clr-text);
  margin-bottom: 16px;
}
.section-desc { color: var(--clr-text-muted); font-size: clamp(1rem, 0.96rem + 0.2vw, 1.1rem); line-height: 1.7; }

/* ---- BUTTONS -------------------------------------------------------- */
.btn-primary, .btn-whatsapp, .btn-calc, .btn-submit, .btn-product-order,
.btn-nav-call, .btn-nav-wa {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition), border-color var(--transition);
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--clr-accent), var(--clr-accent-dim));
  color: var(--clr-accent-ink);
  font-size: 0.98rem;
  padding: 15px 30px;
  box-shadow: 0 6px 24px hsla(38,95%,53%,0.28);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 34px hsla(38,95%,53%,0.44); }
.btn-primary svg { transition: transform var(--transition); }
.btn-primary:hover svg { transform: translateX(4px); }

.btn-whatsapp {
  background: var(--clr-bg-card);
  color: var(--clr-text);
  font-size: 0.98rem;
  font-weight: 600;
  padding: 15px 26px;
  border: 1px solid var(--clr-border-2);
}
.btn-whatsapp:hover { background: hsla(145,63%,42%,0.14); border-color: var(--clr-wa); color: hsl(145,60%,62%); transform: translateY(-2px); }

/* ---- NAV ---------------------------------------------------------- */
.nav-bar {
  position: fixed; inset: 0 0 auto 0; z-index: 1000;
  background: hsla(220,16%,7.5%,0.72);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  border-bottom: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.nav-bar.scrolled {
  background: hsla(220,16%,7%,0.9);
  border-bottom-color: var(--clr-border);
  box-shadow: 0 8px 30px hsla(0,0%,0%,0.4);
}
.nav-inner {
  max-width: var(--max-w); margin: 0 auto; padding-inline: var(--gutter);
  height: 72px; display: flex; align-items: center; gap: clamp(16px, 3vw, 36px);
}
.nav-logo {
  display: flex; align-items: center; gap: 9px;
  font-family: var(--font-display); font-weight: 700; font-size: 1.08rem;
  letter-spacing: 0.04em; flex-shrink: 0; color: var(--clr-text);
}
.logo-icon { color: var(--clr-accent); font-size: 1.35rem; line-height: 1; }
.logo-text em { color: var(--clr-accent); font-style: normal; }

.nav-links { display: flex; align-items: center; gap: 2px; flex: 1; }
.nav-links a {
  font-size: 0.9rem; font-weight: 500; color: var(--clr-text-muted);
  padding: 8px 14px; border-radius: 8px;
  transition: background var(--transition), color var(--transition);
}
.nav-links a:hover { background: var(--clr-bg-card); color: var(--clr-text); }
.nav-links a.active { color: var(--clr-accent); background: var(--clr-accent-glow); }

.nav-cta-group { display: flex; gap: 10px; align-items: center; }
.btn-nav-call, .btn-nav-wa {
  font-size: 0.84rem; font-weight: 600; padding: 10px 16px; border-radius: var(--radius-xs);
  white-space: nowrap;
}
.btn-nav-call { background: var(--clr-bg-card-2); color: var(--clr-text); border: 1px solid var(--clr-border-2); }
.btn-nav-call:hover { background: var(--clr-bg-card); color: var(--clr-accent); }
.btn-nav-wa { background: var(--clr-wa); color: #fff; }
.btn-nav-wa:hover { background: hsl(145,63%,36%); transform: translateY(-1px); }

.hamburger { display: none; flex-direction: column; gap: 5px; padding: 10px; margin-left: auto; }
.hamburger span { width: 22px; height: 2px; background: var(--clr-text); border-radius: 2px; transition: transform var(--transition), opacity var(--transition); }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  display: flex; flex-direction: column; gap: 2px;
  padding: 12px var(--gutter) 20px;
  border-top: 1px solid var(--clr-border);
  background: hsla(220,16%,7%,0.98);
}
.mobile-menu[hidden] { display: none; }
.mobile-menu a { padding: 13px 14px; border-radius: var(--radius-xs); color: var(--clr-text-muted); font-weight: 500; }
.mobile-menu a:hover { background: var(--clr-bg-card); color: var(--clr-text); }
.mobile-call { color: var(--clr-accent) !important; font-weight: 700 !important; margin-top: 6px; border-top: 1px solid var(--clr-border); padding-top: 16px !important; }

/* ---- HERO -------------------------------------------------------- */
.hero {
  min-height: 100svh; padding-top: 72px;
  display: grid; grid-template-columns: 1.05fr 0.95fr;
  align-items: center; gap: clamp(36px, 6vw, 72px);
  max-width: var(--max-w); margin: 0 auto; padding-inline: var(--gutter);
  position: relative;
}
.hero-bg-overlay {
  position: fixed; inset: 0; z-index: -1;
  background:
    radial-gradient(46rem 46rem at 78% 34%, hsla(38,80%,32%,0.09), transparent 68%),
    radial-gradient(40rem 52rem at 12% 88%, hsla(220,64%,24%,0.14), transparent 70%),
    var(--clr-bg);
}
.hero-content { display: flex; flex-direction: column; gap: 22px; z-index: 1; }

.hero-answer-first {
  font-size: 0.82rem; color: var(--clr-text-dim); line-height: 1.65;
  border-left: 2px solid var(--clr-accent-dim); padding-left: 14px;
  max-width: 520px;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 0.73rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--clr-accent); background: var(--clr-accent-glow);
  border: 1px solid hsla(38,95%,53%,0.3); padding: 8px 16px; border-radius: 100px;
  width: fit-content;
}
.badge-dot { width: 7px; height: 7px; background: var(--clr-accent); border-radius: 50%; animation: pulse-dot 2.4s var(--ease) infinite; }
@keyframes pulse-dot { 0%,100% { opacity: 1; transform: scale(1); box-shadow: 0 0 0 0 hsla(38,95%,53%,0.5); } 50% { opacity: 0.7; transform: scale(1.25); box-shadow: 0 0 0 6px hsla(38,95%,53%,0); } }

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 1.4rem + 4.6vw, 4.4rem);
  font-weight: 700; line-height: 1.03; letter-spacing: -0.015em;
  color: var(--clr-text);
}
.hero-sub { font-size: clamp(1rem, 0.96rem + 0.4vw, 1.15rem); color: var(--clr-text-muted); max-width: 480px; line-height: 1.7; }

.hero-stats {
  display: flex; align-items: center; gap: clamp(14px, 3vw, 24px);
  background: linear-gradient(160deg, var(--clr-bg-card), var(--clr-bg-2));
  border: 1px solid var(--clr-border-2);
  border-radius: var(--radius-md); padding: 18px 24px; width: fit-content;
}
.stat-pill { display: flex; flex-direction: column; gap: 3px; }
.stat-pill strong { font-family: var(--font-display); font-size: 1.35rem; font-weight: 700; color: var(--clr-accent); }
.stat-pill span { font-size: 0.72rem; color: var(--clr-text-muted); font-weight: 500; letter-spacing: 0.02em; }
.stat-divider { width: 1px; align-self: stretch; background: var(--clr-border-2); }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 4px; }

.hero-image-wrap { position: relative; }
.hero-img-glow {
  position: absolute; inset: -8% -8% -12% -8%; z-index: -1;
  background: radial-gradient(ellipse at 60% 40%, hsla(38,80%,42%,0.16), transparent 68%);
  filter: blur(28px);
}
.hero-img {
  width: 100%; aspect-ratio: 1200 / 670; object-fit: cover;
  border-radius: var(--radius-lg); border: 1px solid var(--clr-border-2);
  box-shadow: var(--shadow-lg);
}
.hero-floating-card {
  position: absolute; bottom: -22px; left: -18px;
  background: hsla(220,13%,12.5%,0.92);
  border: 1px solid var(--clr-border-2);
  border-radius: var(--radius-md); padding: 13px 18px;
  display: flex; align-items: center; gap: 12px;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  animation: float-card 5s var(--ease) infinite;
}
@keyframes float-card { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-7px); } }
.fc-icon { font-size: 1.5rem; }
.fc-text { display: flex; flex-direction: column; gap: 2px; }
.fc-text strong { font-size: 0.85rem; font-weight: 700; }
.fc-text span { font-size: 0.72rem; color: var(--clr-text-muted); }

.hero-scroll-hint {
  position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: var(--clr-text-dim); font-size: 0.68rem; letter-spacing: 0.14em; text-transform: uppercase;
}
.scroll-arrow {
  width: 18px; height: 18px;
  border-right: 2px solid currentColor; border-bottom: 2px solid currentColor;
  transform: rotate(45deg); animation: scroll-bounce 1.9s var(--ease) infinite;
}
@keyframes scroll-bounce { 0%,100% { transform: rotate(45deg) translate(0,0); opacity: 0.5; } 50% { transform: rotate(45deg) translate(4px,4px); opacity: 1; } }

/* ---- TRUST BAR -------------------------------------------------- */
.trust-bar {
  background: var(--clr-bg-2);
  border-block: 1px solid var(--clr-border);
  padding-block: 16px;
}
.trust-bar-inner {
  max-width: var(--max-w); margin: 0 auto; padding-inline: var(--gutter);
  display: flex; align-items: center; justify-content: center;
  gap: clamp(12px, 2.4vw, 22px); flex-wrap: wrap;
}
.trust-item { display: flex; align-items: center; gap: 8px; font-size: 0.82rem; font-weight: 600; color: var(--clr-text-muted); white-space: nowrap; }
.trust-icon { font-size: 1rem; }
.trust-sep { color: var(--clr-border-2); }

/* ---- PRODUCTS ------------------------------------------------- */
.products-section { background: var(--clr-bg-2); }
.products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(20px, 2.4vw, 30px); align-items: stretch; }

.product-card {
  background: var(--clr-bg-card); border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg); overflow: hidden; position: relative;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--clr-border-2); }
.product-card--featured {
  border-color: hsla(38,95%,53%,0.4);
  background: linear-gradient(165deg, var(--clr-bg-card), hsla(38,46%,14%,0.34));
  box-shadow: 0 0 0 1px hsla(38,95%,53%,0.16), var(--shadow-card);
}
.product-card--featured:hover { border-color: var(--clr-accent); box-shadow: var(--shadow-glow), var(--shadow-lg); }
.product-card-inner { display: flex; flex-direction: column; height: 100%; }

[class^="product-badge-"] {
  position: absolute; top: 14px; right: 14px; z-index: 2;
  font-family: var(--font-display);
  font-size: 0.68rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase;
  padding: 5px 12px; border-radius: 100px;
}
.product-badge-popular { background: hsla(38,95%,53%,0.18); color: var(--clr-accent); border: 1px solid hsla(38,95%,53%,0.38); }
.product-badge-best { background: var(--clr-accent); color: var(--clr-accent-ink); }
.product-badge-pro { background: hsla(266,68%,62%,0.2); color: hsl(266,70%,78%); border: 1px solid hsla(266,68%,62%,0.4); }

.product-img-wrap { aspect-ratio: 16 / 9; overflow: hidden; background: var(--clr-bg); }
.product-img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s var(--ease); }
.product-card:hover .product-img { transform: scale(1.04); }

.product-body { padding: 24px; display: flex; flex-direction: column; gap: 13px; flex: 1; }
.product-code { font-family: var(--font-display); font-size: 0.72rem; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: var(--clr-accent); }
.product-name { font-family: var(--font-display); font-size: 1.3rem; font-weight: 700; line-height: 1.18; }
.product-desc-text { font-size: 0.875rem; color: var(--clr-text-muted); line-height: 1.6; }
.product-specs { display: flex; flex-direction: column; gap: 9px; border-top: 1px solid var(--clr-border); padding-top: 14px; }
.spec-row { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.spec-label { font-size: 0.74rem; color: var(--clr-text-dim); font-weight: 500; flex-shrink: 0; }
.spec-value { font-size: 0.8rem; color: var(--clr-text-muted); font-weight: 600; text-align: right; }
.product-price-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: auto; padding-top: 16px; border-top: 1px solid var(--clr-border); }
.price-quote { font-family: var(--font-display); font-size: 0.9rem; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; color: var(--clr-text-muted); }
.btn-product-order {
  background: var(--clr-accent); color: var(--clr-accent-ink); font-size: 0.85rem; font-weight: 700;
  padding: 11px 20px; border-radius: var(--radius-xs);
}
.btn-product-order:hover { background: var(--clr-accent-2); transform: translateY(-1px); }
.product-card--featured .btn-product-order { background: transparent; color: var(--clr-accent); border: 1px solid var(--clr-accent); }
.product-card--featured .btn-product-order:hover { background: var(--clr-accent); color: var(--clr-accent-ink); }
.products-note { text-align: center; margin-top: 32px; font-size: 0.82rem; color: var(--clr-text-dim); }

/* ---- WHY US ------------------------------------------------- */
.why-section { background: var(--clr-bg); }
.why-layout { display: grid; grid-template-columns: 1.35fr 1fr; gap: clamp(40px, 6vw, 80px); align-items: start; }
.why-intro { color: var(--clr-text-muted); font-size: 1.05rem; line-height: 1.7; margin-bottom: 36px; }
.features-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.feature-card {
  display: flex; gap: 15px; align-items: flex-start;
  background: var(--clr-bg-card); border: 1px solid var(--clr-border);
  border-radius: var(--radius-md); padding: 20px;
  transition: transform var(--transition), border-color var(--transition), background var(--transition);
}
.feature-card:hover { border-color: var(--clr-border-2); transform: translateY(-2px); background: var(--clr-bg-card-2); }
.feature-icon-wrap {
  width: 44px; height: 44px; flex-shrink: 0;
  background: color-mix(in srgb, var(--icon-color) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--icon-color) 30%, transparent);
  border-radius: var(--radius-xs);
  display: flex; align-items: center; justify-content: center; font-size: 1.3rem;
}
.feature-text h3 { font-size: 0.92rem; font-weight: 700; margin-bottom: 5px; line-height: 1.3; }
.feature-text p { font-size: 0.8rem; color: var(--clr-text-muted); line-height: 1.55; }

.stats-tower { display: flex; flex-direction: column; gap: 4px; margin-bottom: 20px; }
.stat-big {
  background: var(--clr-bg-card); border: 1px solid var(--clr-border);
  border-radius: var(--radius-md); padding: 22px 26px;
  display: flex; align-items: baseline; flex-wrap: wrap; gap: 2px 4px;
  transition: border-color var(--transition);
}
.stat-big:hover { border-color: hsla(38,95%,53%,0.4); }
.stat-number { font-family: var(--font-display); font-size: 2.7rem; font-weight: 700; color: var(--clr-accent); line-height: 1; font-variant-numeric: tabular-nums; }
.stat-suffix { font-family: var(--font-display); font-size: 1.6rem; font-weight: 700; color: var(--clr-accent); }
.stat-label { flex-basis: 100%; font-size: 0.8rem; color: var(--clr-text-muted); font-weight: 500; margin-top: 4px; }

.certifications-card { background: var(--clr-bg-card-2); border: 1px solid hsla(38,95%,53%,0.22); border-radius: var(--radius-md); padding: 22px; }
.certifications-card h3 { font-family: var(--font-display); font-size: 0.9rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 14px; color: var(--clr-text); }
.cert-items { display: flex; flex-wrap: wrap; gap: 9px; }
.cert-chip { font-size: 0.78rem; font-weight: 600; padding: 6px 13px; border-radius: 100px; background: var(--clr-accent-glow); color: var(--clr-accent); border: 1px solid hsla(38,95%,53%,0.26); }

/* ---- COMPARE + STRENGTH CHART -------------------------------- */
.compare-section { background: var(--clr-bg-2); }

.strength-chart {
  max-width: 880px; margin: 0 auto clamp(36px, 5vw, 56px);
  background: var(--clr-bg-card); border: 1px solid var(--clr-border-2);
  border-radius: var(--radius-lg); padding: clamp(24px, 4vw, 36px);
  box-shadow: var(--shadow-card);
}
.strength-chart__cap {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 12px;
  font-family: var(--font-display); font-size: 1.05rem; font-weight: 700; color: var(--clr-text);
  margin-bottom: 22px;
}
.strength-chart__unit { font-family: var(--font-main); font-size: 0.76rem; font-weight: 500; color: var(--clr-text-dim); letter-spacing: 0.01em; }

.sc-plot { display: grid; grid-template-columns: minmax(120px, auto) 1fr minmax(84px, auto); gap: 14px 16px; align-items: center; }
.sc-row { display: grid; grid-template-columns: subgrid; grid-column: 1 / -1; align-items: center; }
.sc-name { font-size: 0.86rem; font-weight: 600; color: var(--clr-text); }
.sc-track { position: relative; height: 22px; background: var(--clr-bg); border-radius: 3px; overflow: hidden; }
.sc-bar { position: absolute; inset: 0 auto 0 0; border-radius: 0 4px 4px 0; }
.sc-bar--bongshai { background: linear-gradient(90deg, var(--clr-accent-dim), var(--clr-accent)); }
.sc-bar--brick { background: hsl(220, 8%, 40%); }
.sc-value { font-size: 0.84rem; font-weight: 700; color: var(--clr-text); font-variant-numeric: tabular-nums; white-space: nowrap; text-align: right; }
.sc-axis {
  grid-column: 2 / 3;
  display: flex; justify-content: space-between;
  font-size: 0.68rem; color: var(--clr-text-dim); font-variant-numeric: tabular-nums;
  border-top: 1px solid var(--clr-border); padding-top: 6px; margin-top: 2px;
}
.strength-chart__note { font-size: 0.76rem; color: var(--clr-text-dim); line-height: 1.55; margin-top: 18px; }

.compare-table-wrap {
  max-width: 960px; margin: 0 auto;
  border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--clr-border-2); box-shadow: var(--shadow-card);
  overflow-x: auto;
}
.compare-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; min-width: 520px; }
.compare-table th, .compare-table td { padding: 15px 22px; text-align: left; vertical-align: middle; }
.compare-table thead th {
  font-family: var(--font-display);
  font-weight: 700; font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase;
  background: var(--clr-bg-card); border-bottom: 2px solid var(--clr-border);
}
.compare-table thead th:first-child { color: var(--clr-text-muted); }
.compare-table .col-bongshai { color: var(--clr-accent); background: hsla(38,95%,53%,0.055); }
.compare-table .col-brick { color: var(--clr-text-muted); }
.compare-table tbody th[scope="row"] { font-weight: 600; color: var(--clr-text); background: transparent; }
.compare-table tbody td { border-bottom: 1px solid var(--clr-border); color: var(--clr-text-muted); }
.compare-table tbody th[scope="row"] { border-bottom: 1px solid var(--clr-border); }
.compare-table tbody tr:last-child th, .compare-table tbody tr:last-child td { border-bottom: none; }
.compare-table tbody tr { transition: background var(--transition); }
.compare-table tbody tr:hover th[scope="row"], .compare-table tbody tr:hover td { background: var(--clr-bg-card); }
.compare-table td.col-bongshai.win { color: var(--clr-green); font-weight: 600; }

/* ---- CALCULATOR -------------------------------------------- */
.calc-section { background: var(--clr-bg); }
.calc-card {
  background: linear-gradient(165deg, var(--clr-bg-card), var(--clr-bg-2));
  border: 1px solid var(--clr-border-2);
  border-radius: var(--radius-xl); padding: clamp(24px, 4vw, 46px);
  box-shadow: var(--shadow-card); max-width: 900px; margin: 0 auto;
}
.calc-inputs { display: grid; grid-template-columns: 1fr 1fr 1.5fr auto; gap: 16px; align-items: end; }
.calc-field { display: flex; flex-direction: column; gap: 7px; }
.calc-field label, .form-field label { font-size: 0.82rem; font-weight: 600; color: var(--clr-text-muted); }
.calc-field input, .calc-field select,
.form-field input, .form-field select, .form-field textarea {
  background: var(--clr-bg); border: 1px solid var(--clr-border-2);
  color: var(--clr-text); border-radius: var(--radius-xs);
  padding: 12px 15px; font-size: 0.95rem; font-family: var(--font-main); width: 100%;
  transition: border-color var(--transition), box-shadow var(--transition);
  -webkit-appearance: none; appearance: none;
}
.calc-field input:focus, .calc-field select:focus,
.form-field input:focus, .form-field select:focus, .form-field textarea:focus {
  outline: none; border-color: var(--clr-accent); box-shadow: 0 0 0 3px var(--clr-accent-glow);
}
.calc-field select, .form-field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23f9a410' d='M6 8 0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 15px center; padding-right: 38px;
}
.btn-calc { background: var(--clr-accent); color: var(--clr-accent-ink); font-size: 0.95rem; padding: 13px 28px; border-radius: var(--radius-xs); height: 46px; white-space: nowrap; }
.btn-calc:hover { background: var(--clr-accent-2); transform: translateY(-1px); }

.calc-error, .field-error {
  font-size: 0.8rem; font-weight: 600; color: var(--clr-red);
  display: flex; align-items: center; gap: 6px;
}
.calc-error { grid-column: 1 / -1; margin-top: -4px; }
.calc-error::before, .field-error::before { content: "⚠"; font-size: 0.9rem; }
.field-error[hidden], .calc-error[hidden] { display: none; }
input[aria-invalid="true"], .form-field input[aria-invalid="true"] { border-color: var(--clr-red) !important; box-shadow: 0 0 0 3px hsla(2,78%,62%,0.16) !important; }

.calc-result { margin-top: 34px; padding-top: 32px; border-top: 1px solid var(--clr-border); }
.result-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 18px; }
.result-grid--2 { grid-template-columns: repeat(2, 1fr); max-width: 520px; margin-inline: auto; }
.result-item { background: var(--clr-bg); border: 1px solid var(--clr-border-2); border-radius: var(--radius-md); padding: 22px; text-align: center; }
.result-label { display: block; font-size: 0.76rem; color: var(--clr-text-dim); margin-bottom: 8px; font-weight: 600; }
.result-value { display: block; font-family: var(--font-display); font-size: clamp(1.6rem, 1.2rem + 1.4vw, 2rem); font-weight: 700; color: var(--clr-accent); font-variant-numeric: tabular-nums; }
.result-note { font-size: 0.82rem; color: var(--clr-text-dim); text-align: center; }
.result-note a { color: var(--clr-accent); font-weight: 600; }

/* ---- BULK ORDERS & PAYMENT ------------------------------ */
.ordering-section { background: linear-gradient(180deg, var(--clr-bg), var(--clr-bg-2)); }

.order-steps {
  list-style: none;
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px;
  margin-bottom: clamp(28px, 4vw, 44px);
}
.order-step {
  background: var(--clr-bg-card); border: 1px solid var(--clr-border);
  border-radius: var(--radius-md); padding: 22px 18px;
  display: flex; flex-direction: column; gap: 7px;
}
.order-step__num {
  font-family: var(--font-display); font-weight: 700; font-size: 0.92rem;
  width: 30px; height: 30px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%; background: var(--clr-accent-glow); color: var(--clr-accent);
  border: 1px solid hsla(38,95%,53%,0.3); margin-bottom: 3px;
}
.order-step h3 { font-family: var(--font-display); font-size: 1rem; font-weight: 700; line-height: 1.25; }
.order-step p { font-size: 0.82rem; color: var(--clr-text-muted); line-height: 1.55; }
.order-step strong { color: var(--clr-text); }

.order-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 32px; }
.order-panel {
  background: var(--clr-bg-card); border: 1px solid var(--clr-border-2);
  border-radius: var(--radius-lg); padding: clamp(22px, 3vw, 32px);
}
.order-panel h3 { font-family: var(--font-display); font-size: 1.05rem; font-weight: 700; margin-bottom: 14px; }
.order-methods-h { margin-top: 26px; }

.order-table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
.order-table thead th {
  text-align: left; font-family: var(--font-display); font-size: 0.72rem;
  letter-spacing: 0.09em; text-transform: uppercase; color: var(--clr-text-muted);
  padding: 6px 0 10px; border-bottom: 2px solid var(--clr-border);
}
.order-table thead th:last-child { text-align: right; }
.order-table th[scope="row"] {
  text-align: left; font-weight: 600; color: var(--clr-text);
  padding: 11px 16px 11px 0; border-bottom: 1px solid var(--clr-border); vertical-align: top;
}
.order-table td {
  color: var(--clr-text-muted); padding: 11px 0; border-bottom: 1px solid var(--clr-border);
  text-align: right; vertical-align: top;
}
.order-table tr:last-child th, .order-table tr:last-child td { border-bottom: none; }
.order-note { font-size: 0.77rem; color: var(--clr-text-dim); line-height: 1.55; margin-top: 16px; }

.order-methods { display: flex; flex-direction: column; gap: 9px; }
.order-methods li {
  font-size: 0.85rem; color: var(--clr-text-muted);
  border-left: 2px solid hsla(148,58%,52%,0.5); padding-left: 12px; line-height: 1.4;
}
.order-cta { text-align: center; }

@media (max-width: 980px) {
  .order-steps { grid-template-columns: repeat(2, 1fr); }
  .order-grid { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .order-steps { grid-template-columns: 1fr; }
}

/* ---- TESTIMONIALS ---------------------------------------- */
.testimonials-section { background: var(--clr-bg-2); }
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.testimonial-card {
  background: var(--clr-bg-card); border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg); padding: 30px;
  display: flex; flex-direction: column; gap: 16px;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.testimonial-card:hover { border-color: var(--clr-border-2); transform: translateY(-3px); box-shadow: var(--shadow-card); }
.stars { color: var(--clr-accent); font-size: 0.95rem; letter-spacing: 3px; }
.testimonial-card blockquote { font-size: 0.92rem; color: var(--clr-text-muted); line-height: 1.7; flex: 1; }
.testimonial-card blockquote::before { content: "\201C"; color: var(--clr-accent-dim); font-family: Georgia, serif; font-size: 1.6rem; line-height: 0; margin-right: 2px; vertical-align: -0.35em; }
.testimonial-card footer { display: flex; flex-direction: column; gap: 3px; }
.testimonial-card footer strong { font-size: 0.9rem; font-weight: 700; color: var(--clr-text); }
.testimonial-card footer span { font-size: 0.78rem; color: var(--clr-text-dim); }

/* ---- FAQ ------------------------------------------------ */
.faq-section { background: var(--clr-bg); }
.faq-list { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 8px; }
.faq-item { background: var(--clr-bg-card); border: 1px solid var(--clr-border); border-radius: var(--radius-md); overflow: hidden; transition: border-color var(--transition); }
.faq-item[open] { border-color: hsla(38,95%,53%,0.32); }
.faq-question {
  padding: 19px 22px; font-weight: 600; font-size: 0.95rem; cursor: pointer;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  list-style: none; color: var(--clr-text); transition: background var(--transition);
}
.faq-question::-webkit-details-marker { display: none; }
.faq-question::after { content: "+"; font-size: 1.4rem; font-weight: 400; color: var(--clr-accent); flex-shrink: 0; transition: transform var(--transition); }
.faq-item[open] .faq-question { background: hsla(38,95%,53%,0.05); }
.faq-item[open] .faq-question::after { transform: rotate(45deg); }
.faq-question:hover { background: var(--clr-bg-card-2); }
.faq-answer { padding: 2px 22px 20px; }
.faq-answer p { font-size: 0.9rem; color: var(--clr-text-muted); line-height: 1.7; margin-bottom: 10px; }
.faq-answer ul { padding-left: 18px; display: flex; flex-direction: column; gap: 6px; list-style: disc; }
.faq-answer li { font-size: 0.9rem; color: var(--clr-text-muted); }
.faq-answer strong { color: var(--clr-text); }

/* ---- QUOTE FORM -------------------------------------- */
.quote-section { background: linear-gradient(165deg, var(--clr-bg-2), var(--clr-bg)); border-top: 1px solid var(--clr-border); }
.quote-layout { display: grid; grid-template-columns: 1fr 1.15fr; gap: clamp(40px, 6vw, 80px); align-items: start; }
.quote-desc { color: var(--clr-text-muted); font-size: 1rem; line-height: 1.7; margin-bottom: 32px; }
.contact-methods { display: flex; flex-direction: column; gap: 12px; }
.contact-method-link {
  display: flex; align-items: center; gap: 15px;
  background: var(--clr-bg-card); border: 1px solid var(--clr-border);
  border-radius: var(--radius-md); padding: 16px 18px;
  transition: transform var(--transition), border-color var(--transition), background var(--transition);
}
.contact-method-link:hover { border-color: var(--clr-border-2); transform: translateX(4px); }
.contact-method-wa { border-color: hsla(145,63%,42%,0.32); }
.contact-method-wa:hover { border-color: var(--clr-wa); background: hsla(145,63%,42%,0.09); }
.cm-icon { font-size: 1.4rem; flex-shrink: 0; }
.cm-text { display: flex; flex-direction: column; gap: 2px; }
.cm-text strong { font-size: 0.85rem; font-weight: 700; color: var(--clr-text); }
.cm-text span { font-size: 0.82rem; color: var(--clr-text-muted); }

.quote-form {
  background: var(--clr-bg-card); border: 1px solid var(--clr-border-2);
  border-radius: var(--radius-xl); padding: clamp(24px, 4vw, 40px);
  display: flex; flex-direction: column; gap: 17px;
  box-shadow: var(--shadow-card);
}
.form-intro { font-size: 0.8rem; color: var(--clr-text-dim); line-height: 1.55; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-field { display: flex; flex-direction: column; gap: 7px; }
.form-field label span[aria-hidden] { color: var(--clr-accent); }
.form-field textarea { resize: vertical; min-height: 88px; }

.btn-submit {
  background: linear-gradient(135deg, var(--clr-accent), var(--clr-accent-dim));
  color: var(--clr-accent-ink); font-size: 1rem;
  padding: 16px 28px; border-radius: var(--radius-sm); width: 100%;
  box-shadow: 0 6px 24px hsla(38,95%,53%,0.28);
}
.btn-submit:hover { transform: translateY(-2px); box-shadow: 0 12px 34px hsla(38,95%,53%,0.44); }
.form-privacy { font-size: 0.76rem; color: var(--clr-text-dim); line-height: 1.55; }
.form-privacy a { color: var(--clr-accent); font-weight: 600; }
.form-success {
  background: hsla(148,58%,52%,0.13); border: 1px solid hsla(148,58%,52%,0.32);
  color: var(--clr-green); border-radius: var(--radius-xs); padding: 14px 18px;
  text-align: center; font-weight: 600; font-size: 0.9rem;
}

/* Order CTA panel (landing #order section) */
.order-cta-panel {
  background: linear-gradient(165deg, var(--clr-bg-card), var(--clr-bg-2));
  border: 1px solid var(--clr-border-2); border-radius: var(--radius-xl);
  padding: clamp(24px, 4vw, 36px); box-shadow: var(--shadow-card);
}
.order-cta-panel h3 { font-family: var(--font-display); font-size: 1.05rem; font-weight: 700; margin-bottom: 16px; }
.order-price-list { display: flex; flex-direction: column; }
.order-price-list li {
  display: flex; align-items: baseline; justify-content: space-between; gap: 14px;
  padding: 13px 0; border-bottom: 1px solid var(--clr-border);
}
.order-price-list li:first-child { padding-top: 0; }
.order-price-list li span { font-size: 0.92rem; font-weight: 600; color: var(--clr-text); }
.order-price-list li span em { font-style: normal; font-weight: 500; font-size: 0.72rem; color: var(--clr-text-dim); margin-left: 6px; letter-spacing: 0.06em; }
.order-price-list li strong {
  font-family: var(--font-display); font-size: 0.72rem; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase; color: var(--clr-accent);
  white-space: nowrap; background: var(--clr-accent-glow);
  border: 1px solid hsla(38,95%,53%,0.26); padding: 3px 10px; border-radius: 100px;
}
.order-cta-note { font-size: 0.8rem; color: var(--clr-text-dim); line-height: 1.55; margin: 18px 0 20px; }
#order-checkout-btn { width: 100%; text-decoration: none; }
.order-cta-wa {
  display: block; text-align: center; margin-top: 14px;
  font-size: 0.85rem; font-weight: 600; color: var(--clr-wa);
}
.order-cta-wa:hover { color: hsl(145,60%,60%); }

/* ---- FOOTER ---------------------------------------- */
.site-footer { background: var(--clr-bg-2); border-top: 1px solid var(--clr-border); padding-top: 68px; }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: clamp(28px, 4vw, 48px); padding-bottom: 44px; }
.footer-brand { display: flex; flex-direction: column; gap: 15px; }
.footer-logo { margin-bottom: 2px; }
.footer-brand p { font-size: 0.85rem; color: var(--clr-text-muted); line-height: 1.65; max-width: 300px; }
.footer-socials { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.footer-socials a { font-size: 0.82rem; color: var(--clr-accent); font-weight: 600; transition: color var(--transition); }
.footer-socials a:hover { color: var(--clr-accent-2); }
.footer-socials span { color: var(--clr-border-2); }

.footer-links-col, .footer-contact-col { display: flex; flex-direction: column; gap: 10px; }
.footer-links-col h3, .footer-contact-col h3 {
  font-family: var(--font-display);
  font-size: 0.78rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--clr-text-muted); margin-bottom: 5px;
}
.footer-links-col a, .footer-contact-col a, .footer-contact-col address {
  font-size: 0.85rem; color: var(--clr-text-dim); line-height: 1.6; transition: color var(--transition);
}
.footer-links-col a:hover, .footer-contact-col a:hover { color: var(--clr-accent); }

.footer-bottom { border-top: 1px solid var(--clr-border); padding-block: 20px; }
.footer-bottom-inner { display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap; }
.footer-bottom-inner p { font-size: 0.78rem; color: var(--clr-text-dim); }

/* ---- FLOATING WHATSAPP --------------------------- */
.floating-wa {
  position: fixed; bottom: 24px; right: 24px; z-index: 900;
  display: flex; align-items: center; gap: 10px;
  background: var(--clr-wa); color: #fff;
  border-radius: 100px; padding: 14px 20px 14px 17px;
  box-shadow: 0 8px 30px hsla(145,63%,42%,0.44);
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  animation: wa-pop 0.5s var(--ease) 1.4s both;
}
@keyframes wa-pop { from { opacity: 0; transform: scale(0.6) translateY(16px); } to { opacity: 1; transform: scale(1) translateY(0); } }
.floating-wa:hover { background: hsl(145,63%,36%); transform: translateY(-3px) scale(1.03); box-shadow: 0 14px 40px hsla(145,63%,42%,0.6); }
.floating-wa-label { font-size: 0.85rem; font-weight: 700; white-space: nowrap; }

/* ---- SCROLL REVEAL (progressive enhancement) -----
   JS removes both classes once revealed, so no persistent transform/transition
   is left on the element to fight the component's own :hover transforms. */
.reveal-init { transition: opacity 0.6s var(--ease), transform 0.6s var(--ease); }
.reveal-init:not(.revealed) { opacity: 0; transform: translateY(22px); }

/* ---- RESPONSIVE --------------------------------- */
@media (max-width: 1080px) {
  .hero { grid-template-columns: 1fr; padding-top: 104px; padding-bottom: 72px; min-height: auto; }
  .hero-content { order: 1; }
  .hero-image-wrap { order: 2; max-width: 560px; }
  .hero-scroll-hint { display: none; }
  .hero-bg-overlay { position: absolute; }
  .why-layout { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 880px) {
  .products-grid { grid-template-columns: 1fr; max-width: 460px; margin-inline: auto; }
  .testimonials-grid { grid-template-columns: 1fr; max-width: 460px; margin-inline: auto; }
  .quote-layout { grid-template-columns: 1fr; gap: 44px; }
  .features-grid { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .nav-links, .nav-cta-group { display: none; }
  .hamburger { display: flex; }
  .hero-stats { flex-wrap: wrap; }
  .calc-inputs { grid-template-columns: 1fr 1fr; }
  .calc-inputs .btn-calc, .calc-inputs .calc-field:nth-child(3) { grid-column: 1 / -1; }
  .result-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-bottom-inner { flex-direction: column; text-align: center; }
  .floating-wa-label { display: none; }
  .floating-wa { padding: 15px; }
  .sc-plot { grid-template-columns: 1fr auto; }
  .sc-row { grid-template-columns: subgrid; grid-column: 1 / -1; }
  .sc-name { grid-column: 1 / -1; }
  .sc-axis { grid-column: 1 / 2; }
}
@media (max-width: 460px) {
  .hero-headline { font-size: 2.1rem; }
  .hero-stats .stat-divider { display: none; }
  .hero-stats { gap: 12px 16px; padding: 14px 16px; }
  .trust-sep { display: none; }
  .hero-floating-card { left: 50%; transform: translateX(-50%); bottom: -26px; }
  .hero-badge { border-radius: var(--radius-sm); line-height: 1.5; }
}

/* ---- REDUCED MOTION ---------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .reveal-init { opacity: 1; transform: none; }
}

/* ---- PRINT ------------------------------------- */
@media print {
  .nav-bar, .floating-wa, .hero-scroll-hint, .hero-bg-overlay { display: none !important; }
  body { background: #fff; color: #000; }
  .section { padding-block: 24px; }
}

/* ==========================================================================
   CHECKOUT PAGE (checkout.html)
   ========================================================================== */
.co-header {
  position: sticky; top: 0; z-index: 100;
  background: hsla(220,16%,7.5%,0.92);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border-bottom: 1px solid var(--clr-border);
}
.co-header-inner {
  max-width: 1120px; margin: 0 auto; padding: 0 var(--gutter);
  height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.co-header-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.co-back { font-size: 0.86rem; font-weight: 600; color: var(--clr-text-muted); white-space: nowrap; }
.co-back:hover { color: var(--clr-accent); }

.co-main { padding: clamp(28px, 5vw, 56px) 0 80px; }
.co-wrap { max-width: 1120px; margin: 0 auto; padding-inline: var(--gutter); }

.co-head { max-width: 620px; margin-bottom: clamp(28px, 4vw, 44px); }
.co-head h1 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 1.2rem + 2.4vw, 2.6rem);
  font-weight: 700; line-height: 1.12; letter-spacing: -0.01em;
  margin-bottom: 12px;
}
.co-head p { color: var(--clr-text-muted); font-size: 1rem; line-height: 1.65; }

.co-grid { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 26px; align-items: start; }
.co-left { display: flex; flex-direction: column; gap: 20px; min-width: 0; }

.co-card {
  background: var(--clr-bg-card); border: 1px solid var(--clr-border-2);
  border-radius: var(--radius-lg); padding: clamp(20px, 3vw, 30px);
}
.co-card h2 {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--font-display); font-size: 1.1rem; font-weight: 700;
  margin-bottom: 20px;
}
.co-step {
  width: 26px; height: 26px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem; font-weight: 700;
  border-radius: 50%; background: var(--clr-accent-glow); color: var(--clr-accent);
  border: 1px solid hsla(38,95%,53%,0.3);
}

.co-items { display: flex; flex-direction: column; gap: 10px; }
.co-item {
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  background: var(--clr-bg); border: 1px solid var(--clr-border);
  border-radius: var(--radius-md); padding: 16px 18px;
  transition: border-color var(--transition), background var(--transition);
}
.co-item--active { border-color: hsla(38,95%,53%,0.45); background: hsla(38,60%,12%,0.28); }
.co-item-info { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.co-item-name { font-family: var(--font-display); font-size: 1rem; font-weight: 700; }
.co-item-meta { font-size: 0.76rem; color: var(--clr-text-dim); }

.co-qty {
  flex-shrink: 0;
  display: inline-flex; align-items: center;
  border: 1px solid var(--clr-border-2); border-radius: var(--radius-sm);
  overflow: hidden; background: var(--clr-bg-card);
}
.co-qty-btn {
  width: 38px; height: 40px; font-size: 1.1rem; font-weight: 700;
  color: var(--clr-text-muted);
  display: flex; align-items: center; justify-content: center;
  transition: background var(--transition), color var(--transition);
}
.co-qty-btn:hover { background: var(--clr-bg-card-2); color: var(--clr-accent); }
.co-qty-input {
  width: 74px; height: 40px; border: none; outline: none;
  background: transparent; color: var(--clr-text);
  text-align: center; font-size: 0.95rem; font-family: var(--font-main);
  font-variant-numeric: tabular-nums;
  border-inline: 1px solid var(--clr-border-2);
  -moz-appearance: textfield;
}
.co-qty-input::-webkit-outer-spin-button,
.co-qty-input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.co-qty-input:focus-visible { box-shadow: inset 0 0 0 2px var(--clr-accent); }

.co-hint { font-size: 0.78rem; color: var(--clr-text-dim); margin-top: 14px; }

/* Reuse .form-row / .form-field / .field-error / select styling from the design system */
#co-form { display: flex; flex-direction: column; gap: 16px; }

.co-summary { position: sticky; top: 84px; }
.co-summary-inner {
  background: linear-gradient(165deg, var(--clr-bg-card), var(--clr-bg-2));
  border: 1px solid var(--clr-border-2); border-radius: var(--radius-lg);
  padding: clamp(20px, 3vw, 28px);
  box-shadow: var(--shadow-card);
}
.co-summary-inner h2 { font-family: var(--font-display); font-size: 1.05rem; font-weight: 700; margin-bottom: 16px; }
.co-sum-lines { display: flex; flex-direction: column; gap: 9px; margin-bottom: 16px; min-height: 24px; }
.co-sum-empty { font-size: 0.84rem; color: var(--clr-text-dim); line-height: 1.5; }
.co-sum-line { display: flex; justify-content: space-between; gap: 14px; font-size: 0.84rem; }
.co-sum-line span:first-child { color: var(--clr-text-muted); }
.co-sum-line span:last-child { font-weight: 700; font-variant-numeric: tabular-nums; white-space: nowrap; }

.co-sum-totals {
  display: flex; flex-direction: column; gap: 8px;
  border-top: 1px solid var(--clr-border); padding-top: 16px; margin-bottom: 18px;
}
.co-sum-totals > div { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.co-sum-totals dt { font-size: 0.84rem; color: var(--clr-text-muted); }
.co-sum-totals dd { font-size: 0.9rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.co-sum-big dt { color: var(--clr-text); font-weight: 600; }
.co-sum-big dd { font-family: var(--font-display); font-size: 1.4rem; color: var(--clr-accent); }
.co-sum-muted dt, .co-sum-muted dd { color: var(--clr-text-dim); font-weight: 500; font-size: 0.8rem; }

#co-place { width: 100%; }
.co-err {
  margin-top: 12px; font-size: 0.82rem; font-weight: 600; color: var(--clr-red);
  display: flex; gap: 6px; align-items: flex-start; line-height: 1.4;
}
.co-err::before { content: "⚠"; }
.co-err[hidden] { display: none; }
.co-success {
  margin-top: 12px;
  background: hsla(148,58%,52%,0.13); border: 1px solid hsla(148,58%,52%,0.32);
  color: var(--clr-green); border-radius: var(--radius-xs); padding: 12px 14px;
  font-size: 0.84rem; font-weight: 600; line-height: 1.45;
}
.co-fine { margin-top: 16px; font-size: 0.74rem; color: var(--clr-text-dim); line-height: 1.55; }
.co-fine a { color: var(--clr-accent); font-weight: 600; }
.co-wa-alt {
  display: block; margin-top: 14px; text-align: center;
  font-size: 0.82rem; font-weight: 600; color: var(--clr-wa);
}
.co-wa-alt:hover { color: hsl(145,60%,60%); }

.co-footer { border-top: 1px solid var(--clr-border); background: var(--clr-bg-2); }
.co-footer-inner {
  max-width: 1120px; margin: 0 auto; padding: 24px var(--gutter);
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 20px;
}
.co-footer-inner p { font-size: 0.78rem; color: var(--clr-text-dim); }
.co-footer-inner a { color: var(--clr-text-muted); }
.co-footer-inner a:hover { color: var(--clr-accent); }

@media (max-width: 900px) {
  .co-grid { grid-template-columns: 1fr; }
  .co-summary { position: static; }
  .co-summary-inner { position: sticky; bottom: 0; }
}
@media (max-width: 520px) {
  .co-item { flex-direction: column; align-items: stretch; gap: 12px; }
  .co-qty { align-self: flex-start; }
  .co-header-inner .logo-text { font-size: 0.95rem; }
}