/* =============================================================
   1. Tokens
   ============================================================= */
@property --mesh-angle { syntax: "<angle>"; inherits: false; initial-value: 0deg; }
@property --mesh-x { syntax: "<percentage>"; inherits: false; initial-value: 30%; }
@property --mesh-y { syntax: "<percentage>"; inherits: false; initial-value: 40%; }

:root {
  --bg:        #14130f;
  --bg-2:      #1b1a14;
  --bg-3:      #221f18;
  --cream:     #f2efe8;
  --cream-2:   #cfc7b4;
  --cream-3:   #8c8574;
  --accent:    #b0693c;
  --accent-2:  #b79c78;
  --line:      rgba(242,239,232,0.14);
  --line-soft: rgba(242,239,232,0.08);

  --serif: 'EB Garamond', 'Georgia', serif;
  --sans:  'Lato', 'Helvetica Neue', Arial, sans-serif;

  --ease-out:  cubic-bezier(0.16, 1, 0.3, 1);
  --ease-soft: cubic-bezier(0.25, 0.46, 0.45, 0.94);

  --nav-h: 78px;
}

/* =============================================================
   2. Reset & base
   ============================================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  overflow-x: clip;
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: var(--sans);
  font-weight: 300;
  font-size: 16px;
  line-height: 1.65;
  background: var(--bg);
  color: var(--cream);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
  overscroll-behavior-y: none;
}

img, svg, video { display: block; max-width: 100%; }
img { height: auto; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; }
a { color: inherit; text-decoration: none; }
p { text-wrap: pretty; }
h1, h2, h3, h4 { text-wrap: balance; line-height: 1.05; font-family: var(--serif); font-weight: 400; }
ul { list-style: none; padding: 0; }
::selection { background: var(--accent); color: var(--cream); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip-link {
  position: fixed; top: -100px; left: 1rem; z-index: 9999;
  padding: .7rem 1.1rem; background: var(--cream); color: var(--bg);
  border-radius: 6px; font-weight: 700; font-family: var(--sans);
}
.skip-link:focus { top: 1rem; }

/* =============================================================
   3. Utilities
   ============================================================= */
.container { max-width: 1180px; margin-inline: auto; padding-inline: 1.5rem; }
@media (min-width: 720px) { .container { padding-inline: 2.5rem; } }

.section { position: relative; padding-block: 6rem; }
@media (min-width: 960px) { .section { padding-block: 9rem; } }

.kicker {
  font-family: var(--sans); font-weight: 700; font-size: .72rem;
  letter-spacing: .22em; text-transform: uppercase; color: var(--accent-2);
  display: inline-flex; align-items: center; gap: .6em;
  margin-bottom: 1rem;
}
.kicker::before { content: ""; width: 22px; height: 1px; background: var(--accent); display: inline-block; }

.eyebrow-line { display: flex; align-items: center; gap: .8rem; margin-bottom: 1.2rem; }

h2.section-title { font-size: clamp(1.9rem, 4vw, 3rem); font-style: italic; max-width: 20ch; }
p.section-lede { font-family: var(--serif); font-style: italic; font-size: clamp(1.05rem, 1.6vw, 1.3rem); color: var(--cream-2); max-width: 56ch; margin-top: 1.1rem; }

.hr { border: none; border-top: 1px solid var(--line); }

/* reveal on scroll */
[data-reveal] {
  opacity: 0; transform: translateY(32px);
  transition: opacity .85s var(--ease-soft), transform .85s var(--ease-soft);
}
[data-reveal].is-revealed { opacity: 1; transform: none; }
[data-reveal][data-split] { opacity: 1; transform: none; }

/* =============================================================
   4. Buttons
   ============================================================= */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .6rem;
  padding: 1rem 1.7rem; font-family: var(--sans); font-weight: 700; font-size: .92rem;
  letter-spacing: .02em; border-radius: 999px;
  transition: transform .5s var(--ease-soft), box-shadow .5s var(--ease-soft), background-color .35s var(--ease-out);
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent); color: var(--cream);
  box-shadow: 0 10px 30px -8px rgba(176,105,60,0.55);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 20px 44px -10px rgba(176,105,60,0.65); }
.btn-primary:active { transform: translateY(-1px); }
.btn-ghost {
  border: 1px solid var(--line); color: var(--cream);
}
.btn-ghost:hover { border-color: var(--accent-2); background: rgba(242,239,232,0.04); transform: translateY(-2px); }
.btn svg { width: 18px; height: 18px; flex-shrink: 0; }

.has-magnetic { display: inline-flex; position: relative; isolation: isolate; }
.magnetic-inner { display: inline-flex; align-items: center; justify-content: center; gap: inherit; will-change: transform; transition: transform .8s var(--ease-soft); }

/* =============================================================
   5. Nav
   ============================================================= */
.nav {
  position: fixed; top: 0; inset-inline: 0; z-index: 200;
  height: var(--nav-h);
  display: flex; align-items: center;
  transition: background-color .4s var(--ease-out), box-shadow .4s var(--ease-out), backdrop-filter .4s var(--ease-out);
}
.nav.is-scrolled {
  background: rgba(20,19,15,0.86);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  box-shadow: 0 1px 0 var(--line);
}
.nav-inner { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; }
.nav-brand { display: flex; align-items: center; gap: .6rem; }
.nav-brand img { height: 30px; width: auto; }
.nav-brand span { font-family: var(--serif); font-style: italic; font-size: 1.1rem; letter-spacing: .01em; }

.nav-links { display: none; align-items: center; gap: 2.1rem; }
@media (min-width: 960px) { .nav-links { display: flex; } }
.nav-link { position: relative; font-size: .88rem; font-weight: 400; color: var(--cream-2); padding: .3rem 0; }
.nav-link::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 1px; background: var(--accent-2);
  transform: scaleX(0); transform-origin: right; transition: transform .45s var(--ease-out);
}
.nav-link:hover { color: var(--cream); }
.nav-link:hover::after { transform: scaleX(1); transform-origin: left; }

.nav-cta { display: none; }
@media (min-width: 720px) { .nav-cta { display: inline-flex; padding: .75rem 1.3rem; font-size: .82rem; } }

.nav-burger {
  display: grid; place-items: center; width: 42px; height: 42px;
  border: 1px solid var(--line); border-radius: 50%;
}
@media (min-width: 960px) { .nav-burger { display: none; } }
.nav-burger span { position: relative; width: 16px; height: 10px; display: block; }
.nav-burger span::before, .nav-burger span::after {
  content: ""; position: absolute; left: 0; right: 0; height: 1px; background: var(--cream);
  transition: transform .3s var(--ease-out), top .3s var(--ease-out);
}
.nav-burger span::before { top: 0; }
.nav-burger span::after { top: 9px; }
.nav-burger.is-open span::before { top: 4px; transform: rotate(45deg); }
.nav-burger.is-open span::after { top: 4px; transform: rotate(-45deg); }

.nav-mobile {
  position: fixed; inset: 0; z-index: 190;
  background: var(--bg);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 1.8rem;
  clip-path: inset(0 0 100% 0);
  transition: clip-path .6s var(--ease-soft);
}
.nav-mobile[data-open="true"] { clip-path: inset(0); }
.nav-mobile a { font-family: var(--serif); font-style: italic; font-size: 1.7rem; }
.nav-mobile .btn { margin-top: 1rem; }

/* =============================================================
   6. Hero
   ============================================================= */
.hero {
  position: relative; overflow: clip; isolation: isolate;
  min-height: 100svh;
  display: flex; align-items: center;
  padding-top: var(--nav-h);
}
.hero::before {
  content: ""; position: absolute; inset: -15%; z-index: -2;
  background:
    radial-gradient(55% 45% at var(--mesh-x) var(--mesh-y), rgba(176,105,60,.32), transparent 62%),
    conic-gradient(from var(--mesh-angle), rgba(183,156,120,.14), rgba(176,105,60,.10), rgba(183,156,120,.14));
  filter: blur(90px) saturate(120%);
  opacity: .9;
  animation: meshShift 26s linear infinite;
}
@keyframes meshShift {
  0%   { --mesh-angle: 0deg;   --mesh-x: 26%; --mesh-y: 34%; }
  50%  { --mesh-angle: 180deg; --mesh-x: 70%; --mesh-y: 58%; }
  100% { --mesh-angle: 360deg; --mesh-x: 26%; --mesh-y: 34%; }
}
.hero::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: radial-gradient(120% 90% at 50% 0%, transparent 40%, var(--bg) 92%);
}

.hero-inner { position: relative; z-index: 1; text-align: center; margin-inline: auto; padding-block: 3rem; }
.hero-logo { width: clamp(70px, 9vw, 96px); height: auto; margin-inline: auto; margin-bottom: 1.6rem; opacity: .92; }
.hero-kicker {
  font-size: .78rem; letter-spacing: .26em; text-transform: uppercase; color: var(--accent-2);
  margin-bottom: 1.4rem;
}
.hero-title {
  font-size: clamp(2.5rem, 6.4vw, 5.2rem); font-style: normal; max-width: 16ch; margin-inline: auto;
  line-height: 1.04;
}
.hero-title em { font-style: italic; color: var(--accent-2); }
.hero-sub {
  font-family: var(--serif); font-style: italic; color: var(--cream-2);
  font-size: clamp(1.05rem, 1.7vw, 1.35rem); max-width: 46ch; margin: 1.6rem auto 0;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; margin-top: 2.6rem; }

.hero-scroll {
  position: absolute; bottom: 2.4rem; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: .5rem;
  font-size: .68rem; letter-spacing: .18em; text-transform: uppercase; color: var(--cream-3);
}
.hero-scroll-line { width: 1px; height: 34px; background: linear-gradient(var(--cream-3), transparent); animation: scrollLine 2.2s ease-in-out infinite; }
@keyframes scrollLine { 0%,100% { opacity: .3; } 50% { opacity: 1; } }

/* =============================================================
   7. Pillars (Por qué Metal House)
   ============================================================= */
.pillars-grid {
  display: grid; grid-template-columns: 1fr; gap: 1px;
  background: var(--line); border: 1px solid var(--line); margin-top: 3.5rem;
}
@media (min-width: 720px) { .pillars-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1200px) { .pillars-grid { grid-template-columns: repeat(4, 1fr); } }
.pillar { background: var(--bg); padding: 2.4rem 2rem; }
.pillar-n { font-family: var(--serif); font-style: italic; color: var(--accent); font-size: 1.2rem; margin-bottom: 1.2rem; display: block; }
.pillar h3 { font-size: 1.18rem; margin-bottom: .7rem; }
.pillar p { font-size: .92rem; color: var(--cream-2); }

/* =============================================================
   8. Systems cards
   ============================================================= */
.systems-grid { display: grid; grid-template-columns: 1fr; gap: 1.1rem; margin-top: 3.5rem; }
@media (min-width: 720px) { .systems-grid { grid-template-columns: repeat(2, 1fr); } }

.sys-card {
  display: block;
  position: relative; background: var(--bg-3); border: 1px solid var(--line);
  padding: 2.4rem; isolation: isolate;
  --rx: 0deg; --ry: 0deg;
  transform: perspective(1000px) rotateX(var(--rx)) rotateY(var(--ry));
  transform-style: preserve-3d;
  transition: transform .55s var(--ease-soft), border-color .4s var(--ease-out), box-shadow .5s var(--ease-soft);
}
.sys-card:hover { transition-duration: .15s; border-color: rgba(183,156,120,.35); }
.sys-card:hover { box-shadow: 0 40px 80px -30px rgba(0,0,0,.55), 0 0 0 1px rgba(176,105,60,.18); }
.sys-card .sys-n { font-family: var(--serif); font-style: italic; color: var(--accent); font-size: 1.05rem; }
.sys-card h3 { font-size: 1.5rem; margin: 1rem 0 .9rem; transform: translateZ(30px); }
.sys-card p { color: var(--cream-2); font-size: .95rem; margin-bottom: 1.5rem; }
.sys-tags { display: flex; flex-wrap: wrap; gap: .6rem; }
.sys-tag {
  font-size: .68rem; letter-spacing: .05em; text-transform: uppercase; font-weight: 700;
  border: 1px solid rgba(183,156,120,.4); color: var(--accent-2); padding: .4rem .8rem; border-radius: 999px;
}
.sys-more {
  display: inline-block; margin-top: 1.3rem; font-size: .82rem; font-weight: 700;
  color: var(--accent-2); letter-spacing: .02em;
  transition: transform .3s var(--ease-out), color .3s var(--ease-out);
}
.sys-card:hover .sys-more { color: var(--accent); transform: translateX(4px); }

/* =============================================================
   8b. Sub-page hero + back link
   ============================================================= */
.hero--sub { min-height: 62svh; }
.hero-structure-bg {
  position: absolute; inset: 0; z-index: -3;
  background-repeat: repeat; opacity: .16; pointer-events: none;
}
.hero-structure-bg--steel { background-image: url('assets/img/bg-steel-frame.svg'); background-size: 220px 220px; }
.hero-structure-bg--wood { background-image: url('assets/img/bg-wood-frame.svg'); background-size: 220px 220px; }
.hero-structure-bg--mixta { background-image: url('assets/img/bg-mixta.svg'); background-size: 260px 174px; }
.hero-structure-bg--tradicional { background-image: url('assets/img/bg-tradicional.svg'); background-size: 260px 174px; }
.back-link {
  display: inline-block; margin-bottom: 1.6rem;
  font-size: .82rem; letter-spacing: .03em; color: var(--cream-3);
  transition: color .3s var(--ease-out);
}
.back-link:hover { color: var(--accent-2); }

/* =============================================================
   8c. Calculadora de precio
   ============================================================= */
.calc-card {
  display: grid; grid-template-columns: minmax(0, 1fr); gap: 2rem;
  background: var(--bg-3); border: 1px solid var(--line);
  padding: 2.2rem; margin-top: 3.5rem; max-width: 100%;
}
@media (min-width: 960px) {
  .calc-card { grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 3rem; align-items: stretch; }
}
.calc-form, .calc-result { min-width: 0; }
.calc-field { margin-bottom: 1.9rem; min-width: 0; }
.calc-field:last-child { margin-bottom: 0; }
.calc-field label, .calc-field-label {
  display: block; font-size: .76rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--accent-2); margin-bottom: .85rem;
}
#calc-m2 {
  width: 100%; max-width: 320px; background: var(--bg); border: 1px solid var(--line);
  color: var(--cream); font-family: var(--sans); font-size: 1.1rem;
  padding: .85rem 1rem; border-radius: 3px; transition: border-color .3s var(--ease-out);
}
#calc-m2::placeholder { color: var(--cream-3); }
#calc-m2:focus { outline: none; border-color: var(--accent); }

.calc-options { display: flex; flex-wrap: wrap; gap: .6rem; }
.calc-opt { position: relative; display: inline-flex; }
.calc-opt input {
  position: absolute; inset: 0; opacity: 0; width: 100%; height: 100%; margin: 0; cursor: pointer;
}
.calc-opt span {
  display: inline-block; padding: .65rem 1.15rem; border: 1px solid var(--line); border-radius: 999px;
  font-size: .84rem; color: var(--cream-2); transition: all .25s var(--ease-out); user-select: none;
}
.calc-opt input:checked + span { background: var(--accent); border-color: var(--accent); color: var(--cream); }
.calc-opt:hover span { border-color: var(--accent-2); }
.calc-opt input:focus-visible + span { outline: 2px solid var(--accent-2); outline-offset: 2px; }

.calc-result {
  background: var(--bg); border: 1px solid var(--line); padding: 2.2rem;
  text-align: center; display: flex; flex-direction: column; align-items: center; justify-content: center;
}
.calc-result-label { font-size: .76rem; letter-spacing: .12em; text-transform: uppercase; color: var(--cream-3); }
.calc-result-value {
  display: block; font-family: var(--serif); font-style: italic; color: var(--accent-2);
  font-size: clamp(1.9rem, 4vw, 2.6rem); margin: .6rem 0; line-height: 1.1;
}
.calc-result-detail { display: block; font-size: .82rem; color: var(--cream-3); margin-bottom: 1.7rem; min-height: 2.6em; }
.calc-disclaimer { margin-top: 1.6rem; font-size: .78rem; color: var(--cream-3); max-width: 72ch; }

/* =============================================================
   9. Incluido (llave en mano)
   ============================================================= */
.included-wrap { display: grid; grid-template-columns: 1fr; gap: 3rem; margin-top: 3.5rem; }
@media (min-width: 900px) { .included-wrap { grid-template-columns: 1fr 1fr; gap: 4rem; } }
.included-col h3 { font-size: 1.2rem; margin-bottom: 1.4rem; color: var(--accent-2); font-style: italic; }
.check-list li {
  position: relative; padding-left: 1.7rem; margin-bottom: .95rem; font-size: .96rem; color: var(--cream-2);
}
.check-list li::before {
  content: ""; position: absolute; left: 0; top: .5em; width: 9px; height: 9px;
  border-radius: 50%; border: 1px solid var(--accent); background: rgba(176,105,60,.18);
}
.included-note {
  margin-top: 2.6rem; padding: 1.8rem 2rem; border-left: 2px solid var(--accent);
  background: var(--bg-3); font-family: var(--serif); font-style: italic; font-size: 1.05rem; color: var(--cream-2);
}

/* =============================================================
   10. Proceso (timeline)
   ============================================================= */
.process-list { margin-top: 3.5rem; max-width: 760px; }
.process-item {
  display: grid; grid-template-columns: 56px 1fr; gap: 1.5rem;
  padding-block: 1.8rem; border-top: 1px solid var(--line);
}
.process-item:last-child { border-bottom: 1px solid var(--line); }
.process-n { font-family: var(--serif); font-style: italic; font-size: 1.9rem; color: var(--accent); }
.process-item h3 { font-size: 1.15rem; margin-bottom: .4rem; }
.process-item p { color: var(--cream-2); font-size: .95rem; }

/* =============================================================
   11. Proyectos destacados
   ============================================================= */
.project-block {
  display: grid; grid-template-columns: 1fr; gap: 2rem;
  margin-top: 4rem; padding-top: 4rem; border-top: 1px solid var(--line);
}
.project-block:first-of-type { margin-top: 3.5rem; padding-top: 0; border-top: none; }
@media (min-width: 960px) {
  .project-block { grid-template-columns: 0.82fr 1.18fr; gap: 3.2rem; align-items: center; }
  .project-block--reverse { grid-template-columns: 1.18fr 0.82fr; }
  .project-block--reverse .project-info { order: 2; }
  .project-block--reverse .project-gallery { order: 1; }
}
.project-tag { font-family: var(--serif); font-style: italic; color: var(--accent); font-size: 1.05rem; }
.project-title { font-size: clamp(1.8rem, 3vw, 2.5rem); margin: .5rem 0 1.1rem; }
.project-text { color: var(--cream-2); font-size: .98rem; max-width: 44ch; }

.project-gallery { display: grid; grid-template-columns: repeat(2, 1fr); gap: .7rem; }
.project-photo {
  display: block; overflow: hidden; border: 1px solid var(--line); background: var(--bg-3);
  aspect-ratio: 4 / 3;
}
.project-photo--main { grid-column: span 2; aspect-ratio: 16 / 10; }
.project-photo img {
  width: 100%; height: 100%; object-fit: cover; display: block;
  transition: transform .7s var(--ease-out);
}
.project-photo:hover img, .project-photo:focus-visible img { transform: scale(1.06); }

/* =============================================================
   12. FAQ accordion
   ============================================================= */
.faq-list { margin-top: 3rem; max-width: 820px; }
.faq-item { border-top: 1px solid var(--line); }
.faq-list .faq-item:last-child { border-bottom: 1px solid var(--line); }
.faq-item summary {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding-block: 1.5rem; text-align: left; font-family: var(--serif); font-style: italic;
  font-size: clamp(1rem, 1.6vw, 1.2rem); cursor: pointer; list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item .plus { position: relative; width: 18px; height: 18px; flex-shrink: 0; }
.faq-item .plus::before, .faq-item .plus::after { content: ""; position: absolute; background: var(--accent-2); transition: transform .35s var(--ease-out); }
.faq-item .plus::before { left: 0; top: 50%; width: 100%; height: 1px; transform: translateY(-50%); }
.faq-item .plus::after { top: 0; left: 50%; width: 1px; height: 100%; transform: translateX(-50%); }
.faq-item[open] .plus::after { transform: translateX(-50%) rotate(90deg); opacity: 0; }
.faq-item .faq-a-inner p { padding-bottom: 1.6rem; color: var(--cream-2); font-size: .96rem; max-width: 62ch; }
.faq-item[open] summary { padding-bottom: 1rem; }

/* =============================================================
   13. CTA final
   ============================================================= */
.cta-final {
  position: relative; overflow: clip; text-align: center; padding-block: 6rem;
  border-top: 1px solid var(--line);
}
.cta-final::before {
  content: ""; position: absolute; inset: -20% -10% -60% -10%; z-index: -1;
  background: radial-gradient(45% 45% at 50% 30%, rgba(176,105,60,.28), transparent 72%);
  filter: blur(90px);
}
.cta-final h2 { font-size: clamp(2rem, 4.6vw, 3.4rem); font-style: italic; max-width: 18ch; margin-inline: auto; }
.cta-final p { color: var(--cream-2); margin: 1.3rem auto 2.4rem; max-width: 48ch; font-size: 1.02rem; }

/* =============================================================
   14. Footer
   ============================================================= */
.footer { border-top: 1px solid var(--line); padding-block: 4rem 2.4rem; }
.footer-grid { display: grid; grid-template-columns: 1fr; gap: 3rem; }
@media (min-width: 720px) { .footer-grid { grid-template-columns: 1.3fr 1fr 1fr; } }
.footer-brand img { height: 34px; margin-bottom: 1rem; }
.footer-brand p { color: var(--cream-3); font-size: .88rem; max-width: 32ch; }
.footer-col h4 { font-family: var(--sans); font-weight: 700; font-size: .74rem; letter-spacing: .16em; text-transform: uppercase; color: var(--cream-3); margin-bottom: 1.1rem; }
.footer-col a, .footer-col p { display: block; font-size: .92rem; color: var(--cream-2); margin-bottom: .7rem; }
.footer-col a:hover { color: var(--accent-2); }
.footer-bottom { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; align-items: center; margin-top: 3.5rem; padding-top: 2rem; border-top: 1px solid var(--line-soft); font-size: .78rem; color: var(--cream-3); }
.footer-bottom a { color: var(--cream-3); }
.footer-bottom a:hover { color: var(--accent-2); }

/* =============================================================
   15. Floating WhatsApp button
   ============================================================= */
.wa-float {
  position: fixed; right: 1.4rem; bottom: 1.4rem; z-index: 250;
  display: inline-flex; align-items: center; gap: .7rem;
  background: var(--accent); color: var(--cream);
  padding: .9rem 1.3rem; border-radius: 999px;
  box-shadow: 0 14px 34px -10px rgba(176,105,60,.6);
}
.wa-float svg { width: 22px; height: 22px; }
.wa-float span { font-size: .84rem; font-weight: 700; }
.wa-float .ring {
  position: absolute; inset: -6px; border-radius: 999px; border: 1px solid rgba(176,105,60,.55);
  animation: waPulse 2.6s ease-out infinite;
}
@keyframes waPulse {
  0% { transform: scale(.9); opacity: .8; }
  100% { transform: scale(1.35); opacity: 0; }
}
@media (max-width: 539px) { .wa-float span { display: none; } .wa-float { padding: .95rem; } }

/* =============================================================
   16. Responsive base helpers
   ============================================================= */
@media (min-width: 540px) { }
@media (min-width: 720px) { }
@media (min-width: 960px) { }
@media (min-width: 1280px) { .container { padding-inline: 3rem; } }

/* =============================================================
   17. Reduced motion — only truly intrusive effects
   ============================================================= */
@media (prefers-reduced-motion: reduce) {
  .hero::before { animation: none; }
  .hero-scroll-line { animation: none; }
  .wa-float .ring { animation: none; }
}