/* ============================================================
   GAOHE — Editorial Design System
   Palette: Obsidian #0A0A0A / Cold Gray #F4F4F5 / Gallery White #FFFFFF
   ============================================================ */

:root {
  --ink: #0A0A0A;
  --gray: #F4F4F5;
  --white: #FFFFFF;
  --line-dark: rgba(10, 10, 10, 0.12);
  --line-light: rgba(255, 255, 255, 0.14);
  --muted-dark: rgba(10, 10, 10, 0.55);
  --muted-light: rgba(255, 255, 255, 0.6);
  --font-head: 'Space Grotesk', 'Inter', sans-serif;
  --font-body: 'Inter', sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--white);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { color: inherit; }

.container { max-width: 1240px; margin: 0 auto; padding: 0 32px; }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ============ NAV ============ */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(10, 10, 10, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line-light);
}
.nav-inner {
  max-width: 1240px; margin: 0 auto; padding: 0 32px;
  height: 68px;
  display: flex; align-items: center; justify-content: space-between; gap: 32px;
}
.brand {
  font-family: var(--font-head);
  font-weight: 700; font-size: 1.25rem; letter-spacing: 0.35em;
  color: var(--white); text-decoration: none;
}
.brand sup { font-size: 0.55rem; letter-spacing: 0; opacity: 0.5; }
.nav-links { display: flex; gap: 34px; }
.nav-links a {
  color: var(--muted-light); text-decoration: none;
  font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.22em;
  transition: color 0.25s ease;
}
.nav-links a:hover { color: var(--white); }
.btn-ghost {
  color: var(--white); text-decoration: none;
  font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.22em;
  border: 1px solid rgba(255, 255, 255, 0.4);
  padding: 12px 26px;
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}
.btn-ghost:hover { background: var(--white); color: var(--ink); border-color: var(--white); }
.nav-toggle {
  display: none; background: none; border: none;
  color: var(--white); font-size: 1.4rem; cursor: pointer;
}

/* ============ HERO ============ */
.hero {
  position: relative;
  min-height: 100vh;
  background: var(--ink);
  color: var(--white);
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  overflow: hidden;
}
.hero-media { position: relative; min-height: 100%; }
.hero-media img {
  position: absolute; inset: 0;
  width: 100%; height: 100%; object-fit: cover;
  filter: saturate(0.82) contrast(1.06) brightness(0.9);
  transform: scale(1.02);
  transition: transform 6s ease;
}
.hero:hover .hero-media img { transform: scale(1.06); }
.hero-media-veil {
  position: absolute; inset: 0;
  background: linear-gradient(90deg, var(--ink) 0%, rgba(10,10,10,0.35) 30%, rgba(10,10,10,0) 65%);
}
.hero-body {
  position: relative; z-index: 2;
  display: flex; flex-direction: column; justify-content: center;
  padding: 140px 64px 120px;
}
.eyebrow {
  font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.3em;
  color: var(--muted-light); margin-bottom: 32px;
}
.hero h1 { font-family: var(--font-head); font-weight: 600; }
.h1-brand {
  display: block;
  font-size: 0.9rem; letter-spacing: 0.5em; color: var(--muted-light);
  margin-bottom: 20px;
}
.h1-line {
  display: block;
  font-size: clamp(2.4rem, 4.6vw, 4.2rem);
  line-height: 1.04; letter-spacing: 0.04em; text-transform: uppercase;
}
.hero-sub {
  max-width: 46ch;
  margin-top: 32px;
  font-size: 1.02rem; font-weight: 300; line-height: 1.75;
  color: rgba(255, 255, 255, 0.75);
}
.hero-cta { display: flex; align-items: center; gap: 36px; margin-top: 48px; flex-wrap: wrap; }
.btn-solid {
  display: inline-block;
  background: var(--white); color: var(--ink); text-decoration: none;
  font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.22em; font-weight: 500;
  padding: 16px 34px; border: 1px solid var(--white);
  transition: background 0.25s ease, color 0.25s ease, transform 0.25s ease;
}
.btn-solid:hover { background: transparent; color: var(--white); transform: translateY(-2px); }
.link-under {
  color: var(--white); text-decoration: none;
  font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.22em;
  border-bottom: 1px solid rgba(255,255,255,0.5);
  padding-bottom: 6px;
  transition: border-color 0.25s ease;
}
.link-under:hover { border-color: var(--white); }
.hero-index {
  position: absolute; left: 64px; bottom: 40px; z-index: 2;
  display: flex; gap: 32px; flex-wrap: wrap;
  font-size: 0.66rem; text-transform: uppercase; letter-spacing: 0.2em;
  color: rgba(255, 255, 255, 0.45);
}

/* ============ SECTIONS ============ */
.section { padding: 130px 0; background: var(--white); }
.section-dark { background: var(--ink); color: var(--white); }
.section-alt { background: var(--gray); }
.section-tight { padding: 90px 0; }

.section-head { margin-bottom: 72px; }
.section-eyebrow {
  font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.3em;
  color: var(--muted-dark); margin-bottom: 18px;
}
.section-dark .section-eyebrow { color: var(--muted-light); }
.section-head h2 {
  font-family: var(--font-head); font-weight: 600;
  font-size: clamp(1.9rem, 3.2vw, 2.9rem);
  letter-spacing: 0.03em; text-transform: uppercase; line-height: 1.1;
}
.section-note { margin-top: 16px; font-size: 0.85rem; color: var(--muted-dark); max-width: 62ch; }

/* ---------- Material Lab ---------- */
.lab-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line-dark);
}
.lab-card { padding: 56px 40px 40px; border-right: 1px solid var(--line-dark); }
.lab-card:last-child { border-right: none; }
.lab-index {
  font-family: var(--font-head); font-weight: 500;
  font-size: 0.85rem; letter-spacing: 0.2em; color: var(--muted-dark);
}
.lab-card h3 {
  font-family: var(--font-head); font-weight: 600;
  font-size: 1.25rem; text-transform: uppercase; letter-spacing: 0.06em;
  margin: 24px 0 18px;
}
.lab-card p { font-size: 0.95rem; font-weight: 300; color: var(--muted-dark); line-height: 1.75; }

/* ---------- Capabilities ---------- */
.stat-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line-light);
}
.stat {
  padding: 48px 32px;
  border-right: 1px solid var(--line-light);
  display: flex; flex-direction: column; gap: 10px;
}
.stat:last-child { border-right: none; }
.stat-num {
  font-family: var(--font-head); font-weight: 600;
  font-size: clamp(1.8rem, 2.6vw, 2.6rem); letter-spacing: 0.02em;
}
.stat-label {
  font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.2em;
  color: var(--muted-light);
}
.cap-notes { margin-top: 64px; max-width: 72ch; }
.cap-notes p { font-weight: 300; color: rgba(255,255,255,0.75); line-height: 1.8; }
.cap-notes strong { color: var(--white); font-weight: 600; }

/* ---------- Showroom / categories ---------- */
.cat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.cat-card { display: block; text-decoration: none; color: inherit; }
.cat-media { overflow: hidden; aspect-ratio: 1 / 1; background: var(--gray); }
.cat-media img {
  width: 100%; height: 100%; object-fit: cover;
  filter: saturate(0.85);
  transition: transform 0.8s cubic-bezier(0.2, 0.6, 0.2, 1), filter 0.5s ease;
}
.cat-card:hover .cat-media img { transform: scale(1.05); filter: saturate(1); }
.cat-body {
  display: flex; align-items: baseline; justify-content: space-between; gap: 16px;
  padding-top: 22px; margin-top: 22px;
  border-top: 1px solid var(--line-dark);
}
.cat-body h3 {
  font-family: var(--font-head); font-weight: 600;
  font-size: 1.15rem; text-transform: uppercase; letter-spacing: 0.06em;
}
.cat-count {
  font-size: 0.66rem; text-transform: uppercase; letter-spacing: 0.2em;
  color: var(--muted-dark); white-space: nowrap;
}
.cat-count.soon { color: rgba(10,10,10,0.35); }

/* ---------- Product grid ---------- */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px 32px; }
.product-card { display: block; text-decoration: none; color: inherit; }
.product-image { overflow: hidden; aspect-ratio: 1 / 1; background: var(--gray); }
.product-image img {
  width: 100%; height: 100%; object-fit: cover;
  filter: saturate(0.88);
  transition: transform 0.7s cubic-bezier(0.2, 0.6, 0.2, 1);
}
.product-card:hover .product-image img { transform: scale(1.05); }
.product-body { padding-top: 20px; margin-top: 20px; border-top: 1px solid var(--line-dark); }
.product-body h3 {
  font-family: var(--font-head); font-weight: 600;
  font-size: 1rem; text-transform: uppercase; letter-spacing: 0.08em;
}
.product-item {
  margin-top: 8px; font-size: 0.72rem; text-transform: uppercase;
  letter-spacing: 0.16em; color: var(--muted-dark);
}
.product-item strong { font-weight: 600; color: var(--ink); }

/* ---------- Case Studies ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; align-items: start; }
.case-card { display: flex; flex-direction: column; }
.case-media { overflow: hidden; aspect-ratio: 1 / 1; background: var(--gray); }
.case-media img {
  width: 100%; height: 100%; object-fit: cover;
  filter: saturate(0.85);
  transition: transform 0.8s cubic-bezier(0.2, 0.6, 0.2, 1), filter 0.5s ease;
}
.case-card:hover .case-media img { transform: scale(1.05); filter: saturate(1); }
.case-meta {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 16px;
  margin: 22px 0 10px; min-height: 44px;
}
.case-tag {
  font-size: 0.66rem; text-transform: uppercase; letter-spacing: 0.24em;
  color: var(--muted-dark); line-height: 1.7; padding-top: 5px;
}
.case-client {
  font-size: 0.62rem; text-transform: uppercase; letter-spacing: 0.18em;
  color: var(--ink); border: 1px solid var(--line-dark);
  border-radius: 999px; padding: 6px 14px; white-space: nowrap; flex-shrink: 0;
}
.case-card h3 {
  font-family: var(--font-head); font-weight: 600;
  font-size: 1.2rem; text-transform: uppercase; letter-spacing: 0.05em;
  margin-bottom: 12px; min-height: 2.5em; line-height: 1.25;
}
.case-card > p { font-size: 0.92rem; font-weight: 300; color: var(--muted-dark); line-height: 1.7; }

/* ---------- Sustainability ---------- */
.sustain-inner { max-width: 880px; }
.sustain-copy { font-size: 1.05rem; font-weight: 300; line-height: 1.85; color: var(--muted-dark); }
.audit-block { margin-top: 56px; }
.audit-title {
  font-family: var(--font-head); font-weight: 600;
  font-size: 1.15rem; letter-spacing: 0.04em; margin-bottom: 24px;
}
.pillar-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line-dark);
}
.pillar {
  padding: 28px 24px 28px 0;
  border-right: 1px solid var(--line-dark);
  display: flex; flex-direction: column; gap: 8px;
}
.pillar:last-child { border-right: none; }
.pillar-num {
  font-family: var(--font-head); font-size: 0.75rem; font-weight: 500;
  letter-spacing: 0.2em; color: var(--muted-dark);
}
.pillar-name { font-size: 0.95rem; font-weight: 400; letter-spacing: 0.02em; }
.audit-note {
  margin-top: 24px; font-size: 0.8rem; font-weight: 300;
  letter-spacing: 0.06em; color: var(--muted-dark);
}
@media (max-width: 860px) { .pillar-grid { grid-template-columns: repeat(2, 1fr); } .pillar:nth-child(2n) { border-right: none; } }
@media (max-width: 480px) { .pillar-grid { grid-template-columns: 1fr; } .pillar { border-right: none; } }

/* ============ CONTACT / RFQ ============ */
.contact-grid {
  display: grid; grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 72px;
}
.contact-list { list-style: none; }
.contact-list li {
  margin-bottom: 18px; line-height: 1.6;
  color: rgba(255,255,255,0.8); font-weight: 300;
}
.contact-list strong {
  display: block; font-weight: 500; font-size: 0.66rem;
  text-transform: uppercase; letter-spacing: 0.22em;
  color: rgba(255,255,255,0.45); margin-bottom: 6px;
}
.contact-list a {
  color: var(--white); text-decoration: none;
  border-bottom: 1px solid rgba(255,255,255,0.3); padding-bottom: 2px;
}
.contact-list a:hover { border-color: var(--white); }

.whatsapp-row { position: relative; }
.whatsapp-trigger { position: relative; display: inline-block; }
.whatsapp-popup {
  position: absolute; left: 0; bottom: calc(100% + 14px);
  width: 200px; background: var(--white); padding: 12px;
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s;
  z-index: 60; text-align: center;
}
.whatsapp-trigger:hover .whatsapp-popup { opacity: 1; visibility: visible; transform: translateY(0); }
.whatsapp-popup img { width: 100%; margin-bottom: 8px; }
.whatsapp-popup span {
  display: block; font-size: 0.72rem; letter-spacing: 0.06em;
  color: var(--muted-dark);
}

.contact-form { display: flex; flex-direction: column; gap: 16px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact-form input,
.contact-form textarea {
  width: 100%; padding: 15px 16px;
  font-family: var(--font-body); font-size: 0.92rem;
  border: 1px solid rgba(255,255,255,0.16);
  background: rgba(255,255,255,0.05);
  color: var(--white); outline: none;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.contact-form input::placeholder,
.contact-form textarea::placeholder { color: rgba(255,255,255,0.4); }
.contact-form input:focus,
.contact-form textarea:focus { border-color: rgba(255,255,255,0.6); background: rgba(255,255,255,0.08); }
.contact-form textarea { resize: vertical; font-family: var(--font-body); }
.contact-form .btn-solid { align-self: flex-start; margin-top: 8px; cursor: pointer; }
.contact-form .btn-solid:disabled { opacity: 0.55; cursor: wait; }
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
.form-status { margin: 4px 0 0; font-size: 0.85rem; font-weight: 300; letter-spacing: 0.03em; min-height: 1.2em; }
.form-status.success { color: #9fd8b4; }
.form-status.error { color: #e8a0a0; }

/* File upload */
.file-upload { position: relative; }
.file-upload input[type="file"] {
  position: absolute; inset: 0; width: 100%; height: 100%;
  opacity: 0; cursor: pointer; z-index: 2;
}
.file-upload-label {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px;
  padding: 26px; text-align: center;
  border: 1px dashed rgba(255,255,255,0.28);
  transition: border-color 0.2s ease, background 0.2s ease;
}
.file-upload:hover .file-upload-label { border-color: rgba(255,255,255,0.6); background: rgba(255,255,255,0.04); }
.file-upload-icon { font-size: 1.4rem; color: rgba(255,255,255,0.5); line-height: 1; }
.file-upload-title {
  font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.2em; color: var(--white);
}
.file-upload-hint { font-size: 0.72rem; color: rgba(255,255,255,0.4); }
.file-list { margin-top: 12px; display: flex; flex-direction: column; gap: 6px; }
.file-item {
  font-size: 0.78rem; color: rgba(255,255,255,0.7);
  padding: 7px 10px; background: rgba(255,255,255,0.07);
}

/* ============ FOOTER ============ */
.footer { background: var(--ink); color: var(--white); padding: 90px 0 40px; }
.trust-row {
  display: flex; align-items: center; justify-content: center; flex-wrap: wrap;
  gap: 20px; padding-bottom: 64px;
  border-bottom: 1px solid var(--line-light);
  font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.22em;
  color: var(--muted-light); text-align: center;
}
.trust-row i { width: 1px; height: 14px; background: var(--line-light); }
.footer-cta { text-align: center; padding: 80px 0 60px; }
.footer-cta h2 {
  font-family: var(--font-head); font-weight: 600;
  font-size: clamp(1.7rem, 3vw, 2.5rem);
  text-transform: uppercase; letter-spacing: 0.03em; line-height: 1.15;
}
.footer-cta p { margin-top: 18px; font-weight: 300; color: var(--muted-light); }
.kit-form {
  margin: 40px auto 0; max-width: 460px;
  display: flex; align-items: center;
  border-bottom: 1px solid rgba(255,255,255,0.4);
  transition: border-color 0.25s ease;
}
.kit-form:focus-within { border-color: var(--white); }
.kit-form input {
  flex: 1; background: none; border: none; outline: none;
  color: var(--white); font-family: var(--font-body); font-size: 0.95rem; padding: 16px 4px;
}
.kit-form input::placeholder { color: rgba(255,255,255,0.4); }
.kit-form button {
  background: none; border: none; cursor: pointer;
  color: var(--white); font-size: 1.3rem; padding: 0 8px;
  transition: transform 0.25s ease;
}
.kit-form button:hover { transform: translateX(6px); }
.footer-base {
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px;
  padding-top: 40px; border-top: 1px solid var(--line-light);
  font-size: 0.72rem; color: rgba(255,255,255,0.4);
}
.footer-group-link {
  color: rgba(255,255,255,0.65); text-decoration: none;
  letter-spacing: 0.08em; transition: color 0.25s ease;
}
.footer-group-link:hover { color: var(--white); }
.footer-group-link span { display: inline-block; transition: transform 0.25s ease; }
.footer-group-link:hover span { transform: translate(2px, -2px); }

/* ============ INNER PAGES ============ */
.page-head {
  background: var(--ink); color: var(--white);
  padding: 140px 0 80px;
}
.back-link {
  display: inline-block; text-decoration: none;
  font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.22em;
  color: var(--muted-light); margin-bottom: 28px;
  transition: color 0.25s ease;
}
.back-link:hover { color: var(--white); }
.page-head h1 {
  font-family: var(--font-head); font-weight: 600;
  font-size: clamp(2rem, 4vw, 3.2rem);
  text-transform: uppercase; letter-spacing: 0.04em; line-height: 1.1;
}
.page-head .page-sub {
  margin-top: 18px; font-size: 0.72rem; text-transform: uppercase;
  letter-spacing: 0.24em; color: var(--muted-light);
}
.page-head.on-light { background: var(--white); color: var(--ink); }
.page-head.on-light .back-link { color: var(--muted-dark); }
.page-head.on-light .back-link:hover { color: var(--ink); }
.page-head.on-light .page-sub { color: var(--muted-dark); }

.empty-state {
  font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.2em;
  color: var(--muted-dark); padding: 60px 0;
}

/* Product detail */
.detail-grid {
  display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 72px; align-items: start;
}
.detail-media { background: var(--gray); overflow: hidden; }
.detail-media img { width: 100%; height: auto; object-fit: cover; }
.detail-info h1 {
  font-family: var(--font-head); font-weight: 600;
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  text-transform: uppercase; letter-spacing: 0.04em; line-height: 1.1;
}
.detail-sub {
  margin: 14px 0 36px; font-size: 0.7rem; text-transform: uppercase;
  letter-spacing: 0.22em; color: var(--muted-dark);
}
.spec-table { width: 100%; border-collapse: collapse; margin-bottom: 40px; }
.spec-table tr { border-top: 1px solid var(--line-dark); }
.spec-table tr:last-child { border-bottom: 1px solid var(--line-dark); }
.spec-table td { padding: 16px 0; font-size: 0.82rem; }
.spec-table td:first-child {
  text-transform: uppercase; letter-spacing: 0.2em;
  color: var(--muted-dark); width: 40%; font-size: 0.68rem;
}
.spec-table td:last-child { font-weight: 500; letter-spacing: 0.04em; }
.detail-actions { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.btn-dark {
  display: inline-block; text-decoration: none; cursor: pointer;
  background: var(--ink); color: var(--white); border: 1px solid var(--ink);
  font-family: var(--font-body); font-size: 0.7rem;
  text-transform: uppercase; letter-spacing: 0.22em; font-weight: 500;
  padding: 15px 30px;
  transition: background 0.25s ease, color 0.25s ease;
}
.btn-dark:hover { background: transparent; color: var(--ink); }
.btn-line {
  display: inline-block; text-decoration: none; cursor: pointer;
  background: none; color: var(--ink); border: 1px solid var(--line-dark);
  font-family: var(--font-body); font-size: 0.7rem;
  text-transform: uppercase; letter-spacing: 0.22em;
  padding: 15px 30px;
  transition: border-color 0.25s ease, background 0.25s ease;
}
.btn-line:hover { border-color: var(--ink); background: rgba(10,10,10,0.03); }

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
  .hero { grid-template-columns: 1fr; }
  .hero-media { position: absolute; inset: 0; }
  .hero-media img { opacity: 0.4; }
  .hero-media-veil { background: linear-gradient(180deg, rgba(10,10,10,0.7) 0%, rgba(10,10,10,0.88) 100%); }
  .hero-body { padding: 150px 32px 150px; }
  .hero-index { left: 32px; right: 32px; bottom: 32px; }
  .section { padding: 90px 0; }
  .lab-grid { grid-template-columns: 1fr; }
  .lab-card { border-right: none; border-bottom: 1px solid var(--line-dark); padding: 40px 0; }
  .lab-card:last-child { border-bottom: none; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .stat { border-bottom: 1px solid var(--line-light); }
  .stat:nth-child(2n) { border-right: none; }
  .case-grid, .cat-grid { grid-template-columns: 1fr; gap: 56px; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid, .detail-grid { grid-template-columns: 1fr; gap: 56px; }
}
@media (max-width: 720px) {
  .container { padding: 0 22px; }
  .nav-inner { padding: 0 22px; }
  .nav-links {
    position: fixed; left: 0; right: 0; top: 68px;
    background: var(--ink); flex-direction: column; gap: 0;
    border-bottom: 1px solid var(--line-light);
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 20px 22px; border-top: 1px solid var(--line-light); }
  .nav-toggle { display: block; }
  .btn-ghost { display: none; }
  .hero-body { padding: 120px 22px 160px; }
  .hero-index { left: 22px; right: 22px; gap: 18px; font-size: 0.6rem; }
  .section { padding: 72px 0; }
  .section-head { margin-bottom: 48px; }
  .stat-grid { grid-template-columns: 1fr; }
  .stat { border-right: none; }
  .product-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .trust-row i { display: none; }
  .footer-base { flex-direction: column; align-items: flex-start; }
  .whatsapp-popup { width: 168px; }
  .detail-actions { flex-direction: column; align-items: stretch; }
  .detail-actions a, .detail-actions button { text-align: center; }
}