/* ==========================================================================
   BUILDHOME — Website giới thiệu công ty xây dựng nhà ở
   ========================================================================== */

:root {
  --navy-900: #0f2a47;
  --navy-800: #163a5f;
  --navy-700: #1c4a78;
  --blue-accent: #2f6fed;
  --teal: #16a37e;
  --gray-900: #1c2733;
  --gray-700: #4c5b6b;
  --gray-500: #7c8a99;
  --gray-200: #e6eaef;
  --gray-100: #f3f6f9;
  --white: #ffffff;

  --font-heading: "Montserrat", "Be Vietnam Pro", sans-serif;
  --font-body: "Be Vietnam Pro", sans-serif;

  --container-w: 1240px;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow-sm: 0 2px 10px rgba(15, 42, 71, 0.06);
  --shadow-md: 0 10px 30px rgba(15, 42, 71, 0.12);
  --transition: 0.3s ease;
}

/* ---------- Reset ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  color: var(--gray-700);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; font-size: inherit; }
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--navy-900);
  font-weight: 800;
  line-height: 1.25;
}
.container {
  width: 100%;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Utility ---------- */
.section { padding: 90px 0; }
.section--tight { padding: 70px 0; }
.section--alt { background: var(--gray-100); }
.section-head { text-align: center; margin-bottom: 50px; }
.section-head.left { text-align: left; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--blue-accent);
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--blue-accent);
  display: inline-block;
}
.section-head .eyebrow { justify-content: center; }
.section-head.left .eyebrow { justify-content: flex-start; }
.section-title {
  font-size: 36px;
  margin-bottom: 0;
}
.section-title.underline { position: relative; padding-bottom: 18px; }
.section-title.underline::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 56px;
  height: 3px;
  background: var(--blue-accent);
  border-radius: 2px;
}
.section-head.left .section-title.underline::after { left: 0; transform: none; }
.section-sub {
  color: var(--gray-500);
  max-width: 560px;
  margin: 16px auto 0;
}
.section-head.left .section-sub { margin-left: 0; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 28px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.3px;
  transition: var(--transition);
  white-space: nowrap;
}
.btn svg { transition: transform var(--transition); flex-shrink: 0; }
.btn:hover svg { transform: translateX(4px); }
.btn-primary {
  background: var(--navy-800);
  color: var(--white);
}
.btn-primary:hover { background: var(--blue-accent); }
.btn-outline {
  background: var(--white);
  color: var(--navy-800);
  border: 1px solid var(--gray-200);
}
.btn-outline:hover {
  border-color: var(--navy-800);
  background: var(--navy-900);
  color: var(--white);
}
.btn-block { width: 100%; justify-content: center; }

/* Reveal on scroll (AOS-like) */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
[data-reveal].in-view { opacity: 1; transform: translateY(0); }
[data-reveal="fade"] { transform: none; }
[data-reveal="left"] { transform: translateX(-32px); }
[data-reveal="left"].in-view { transform: translateX(0); }
[data-reveal="right"] { transform: translateX(32px); }
[data-reveal="right"].in-view { transform: translateX(0); }

/* Image zoom hover */
.zoom { overflow: hidden; display: block; }
.zoom img { transition: transform 0.6s ease; width: 100%; height: 100%; object-fit: cover; }
.zoom:hover img { transform: scale(1.08); }

/* ==========================================================================
   HEADER
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  transition: box-shadow var(--transition);
}
.site-header.scrolled { box-shadow: var(--shadow-sm); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 88px;
  gap: 24px;
}
.logo { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.logo .mark {
  width: 46px; height: 46px;
  background: var(--navy-900);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: var(--white);
}
.logo .mark svg { width: 24px; height: 24px; }
.logo .text { line-height: 1.15; }
.logo .text strong {
  display: block;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 19px;
  color: var(--navy-900);
  letter-spacing: 0.5px;
}
.logo .text span { display: block; font-size: 11.5px; color: var(--gray-500); }

.main-nav { display: flex; }
.main-nav ul { display: flex; gap: 34px; }
.main-nav a {
  font-weight: 600;
  font-size: 15px;
  color: var(--gray-900);
  padding: 8px 0;
  position: relative;
  transition: color var(--transition);
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--blue-accent);
  transition: width var(--transition);
}
.main-nav a:hover { color: var(--blue-accent); }
.main-nav a:hover::after { width: 100%; }
.main-nav li.active a { color: var(--blue-accent); }
.main-nav li.active a::after { width: 100%; }

.header-actions { display: flex; align-items: center; gap: 18px; flex-shrink: 0; }
.hotline {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--navy-900);
  color: var(--white);
  padding: 13px 22px;
  border-radius: 30px;
  font-weight: 700;
  font-size: 15px;
  transition: background var(--transition);
}
.hotline:hover { background: var(--blue-accent); }
.hotline svg { width: 18px; height: 18px; flex-shrink: 0; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 30px;
  padding: 4px;
}
.nav-toggle span {
  height: 2px;
  background: var(--navy-900);
  border-radius: 2px;
  transition: var(--transition);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ==========================================================================
   BANNER (home hero slider)
   ========================================================================== */
.home-banner { position: relative; width: 100%; overflow: hidden; background: var(--navy-900); }
.hero-slide { display: none; }
.hero-slide.active { display: block; }
.slide-media { position: relative; aspect-ratio: 1831 / 859; overflow: hidden; }
.slide-media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; }
.slide-media img.flip-h { transform: scaleX(-1); }
.slide-media::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(255,255,255,0.85) 0%, rgba(255,255,255,0.45) 40%, rgba(255,255,255,0) 65%);
}
.banner-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  z-index: 2;
}
.banner-content { max-width: 620px; }
.banner-content .hero-actions { flex-wrap: nowrap; }

.hero-title {
  font-size: 54px;
  line-height: 1.12;
  margin-bottom: 22px;
}
.hero-title .accent { color: var(--blue-accent); }
.hero-text {
  font-size: 16px;
  color: var(--gray-700);
  max-width: 460px;
  margin-bottom: 34px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  position: absolute;
  left: 50%;
  bottom: 22px;
  transform: translateX(-50%);
  z-index: 3;
}
.hero-dots button {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.55);
  box-shadow: 0 1px 4px rgba(15, 42, 71, 0.3);
  transition: var(--transition);
}
.hero-dots button.active { background: var(--blue-accent); width: 24px; border-radius: 5px; }

/* Feature strip */
.feature-strip {
  background: var(--navy-900);
  padding: 0;
}
.feature-strip ul {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.feature-strip li {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 34px 30px;
  border-right: 1px solid rgba(255, 255, 255, 0.1);
}
.feature-strip li:last-child { border-right: none; }
.feature-strip .ic {
  width: 50px; height: 50px;
  flex-shrink: 0;
  border: 1.5px solid rgba(255, 255, 255, 0.35);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  color: var(--white);
  transition: var(--transition);
}
.feature-strip li:hover .ic {
  background: var(--blue-accent);
  border-color: var(--blue-accent);
  transform: translateY(-3px);
}
.feature-strip .ic svg { width: 24px; height: 24px; }
.feature-strip h4 { color: var(--white); font-size: 16px; margin-bottom: 4px; }
.feature-strip p { color: rgba(255, 255, 255, 0.6); font-size: 13.5px; }

/* ==========================================================================
   ABOUT
   ========================================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  align-items: center;
}
.about-title { font-size: 34px; margin-bottom: 18px; }
.about-text { margin-bottom: 26px; }
.check-list { margin-bottom: 32px; display: flex; flex-direction: column; gap: 14px; }
.check-list li { display: flex; align-items: flex-start; gap: 12px; font-weight: 600; color: var(--gray-900); font-size: 15px; }
.check-list .check-ic {
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--teal);
  color: var(--white);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  margin-top: 1px;
}
.check-list .check-ic svg { width: 12px; height: 12px; }

.about-media {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 16px;
}
.about-media .main-img { border-radius: var(--radius); overflow: hidden; height: 100%; min-height: 360px; }
.about-media .side-imgs { display: flex; flex-direction: column; gap: 16px; }
.about-media .side-imgs .zoom { border-radius: var(--radius); overflow: hidden; height: 100%; }

/* ==========================================================================
   SERVICES
   ========================================================================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.service-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 34px 28px;
  transition: var(--transition);
}
.service-card:hover {
  box-shadow: var(--shadow-md);
  border-color: transparent;
  transform: translateY(-6px);
}
.service-card .ic {
  width: 56px; height: 56px;
  border-radius: 12px;
  background: var(--gray-100);
  display: flex; align-items: center; justify-content: center;
  color: var(--navy-800);
  margin-bottom: 20px;
  transition: var(--transition);
}
.service-card:hover .ic { background: var(--navy-900); color: var(--white); }
.service-card .ic svg { width: 26px; height: 26px; }
.service-card h3 { font-size: 18px; margin-bottom: 10px; }
.service-card p { font-size: 14.5px; color: var(--gray-500); margin-bottom: 20px; }
.service-card .more {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid var(--gray-200);
  color: var(--navy-800);
  transition: var(--transition);
}
.service-card .more svg { width: 15px; height: 15px; transition: transform var(--transition); }
.service-card:hover .more { background: var(--blue-accent); border-color: var(--blue-accent); color: var(--white); }
.service-card:hover .more svg { transform: translateX(3px); }

/* ==========================================================================
   PROJECTS CAROUSEL
   ========================================================================== */
.projects-carousel { position: relative; }
.carousel-track {
  display: flex;
  gap: 24px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding-bottom: 6px;
  scrollbar-width: none;
}
.carousel-track::-webkit-scrollbar { display: none; }
.project-card {
  flex: 0 0 calc((100% - 24px * 4) / 5);
  scroll-snap-align: start;
}
.project-card .zoom {
  border-radius: var(--radius);
  aspect-ratio: 3 / 3.6;
  margin-bottom: 16px;
}
.project-card h3 { font-size: 15.5px; margin-bottom: 4px; }
.project-card .loc { font-size: 13px; color: var(--gray-500); }

.carousel-arrow {
  position: absolute;
  top: 40%;
  transform: translateY(-50%);
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--white);
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--navy-800);
  z-index: 2;
  transition: var(--transition);
}
.carousel-arrow:hover { background: var(--navy-900); color: var(--white); border-color: var(--navy-900); }
.carousel-arrow.prev { left: -22px; }
.carousel-arrow.next { right: -22px; }
.carousel-arrow svg { width: 18px; height: 18px; }

/* ==========================================================================
   GENERIC PAGE / INNER-PAGE HERO
   ========================================================================== */
.page-hero {
  background: linear-gradient(180deg, #eaf1fb 0%, #ffffff 100%);
  padding: 60px 0;
  text-align: center;
}
.page-hero h1 { font-size: 40px; margin-bottom: 12px; }
.breadcrumb { display: inline-flex; gap: 8px; align-items: center; color: var(--gray-500); font-size: 14.5px; font-weight: 600; }
.breadcrumb a { color: var(--gray-500); transition: color var(--transition); }
.breadcrumb a:hover { color: var(--blue-accent); }
.breadcrumb .sep { color: var(--gray-200); }
.breadcrumb .current { color: var(--blue-accent); }

/* Generic content blocks reused across inner pages */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }

.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 46px; }
.stat-box { text-align: center; }
.stat-box .num { font-family: var(--font-heading); font-weight: 800; font-size: 34px; color: var(--navy-900); }
.stat-box .lbl { font-size: 14px; color: var(--gray-500); margin-top: 4px; }

.value-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 32px 26px;
  text-align: left;
  transition: var(--transition);
}
.value-card:hover { box-shadow: var(--shadow-md); transform: translateY(-6px); }
.value-card .ic {
  width: 52px; height: 52px;
  border-radius: 12px;
  background: var(--gray-100);
  display: flex; align-items: center; justify-content: center;
  color: var(--navy-800);
  margin-bottom: 18px;
}
.value-card .ic svg { width: 24px; height: 24px; }
.value-card h3 { font-size: 17px; margin-bottom: 8px; }
.value-card p { font-size: 14px; color: var(--gray-500); }

/* Process steps (timeline) */
.process-list { display: flex; flex-direction: column; }
.process-step {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 26px;
  position: relative;
  padding-bottom: 46px;
}
.process-step:last-child { padding-bottom: 0; }
.process-step .num-col { position: relative; display: flex; justify-content: center; }
.process-step .num {
  width: 60px; height: 60px;
  border-radius: 50%;
  background: var(--navy-900);
  color: var(--white);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 20px;
  display: flex; align-items: center; justify-content: center;
  z-index: 1;
  flex-shrink: 0;
  transition: var(--transition);
}
.process-step:hover .num { background: var(--blue-accent); }
.process-step .num-col::after {
  content: "";
  position: absolute;
  top: 60px; bottom: -46px;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  background: var(--gray-200);
}
.process-step:last-child .num-col::after { display: none; }
.process-step .body { padding-top: 10px; }
.process-step h3 { font-size: 19px; margin-bottom: 8px; }
.process-step p { font-size: 14.5px; color: var(--gray-500); max-width: 620px; }

/* Service detail list (dich-vu.html) */
.service-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
  padding: 50px 0;
  border-bottom: 1px solid var(--gray-200);
}
.service-detail:last-child { border-bottom: none; }
.service-detail.reverse .media { order: 2; }
.service-detail .media { border-radius: var(--radius); overflow: hidden; aspect-ratio: 4/3; }
.service-detail .tag {
  display: inline-block;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--blue-accent);
  margin-bottom: 12px;
}
.service-detail h3 { font-size: 24px; margin-bottom: 14px; }
.service-detail p { margin-bottom: 18px; }
.mini-list li { display: flex; gap: 10px; align-items: flex-start; font-size: 14.5px; color: var(--gray-700); margin-bottom: 10px; font-weight: 500; }
.mini-list .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--blue-accent); margin-top: 8px; flex-shrink: 0; }

/* Project filter + full grid (du-an.html) */
.filter-bar { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; margin-bottom: 44px; }
.filter-bar button {
  padding: 10px 22px;
  border-radius: 30px;
  border: 1px solid var(--gray-200);
  font-weight: 600;
  font-size: 14px;
  color: var(--gray-700);
  transition: var(--transition);
}
.filter-bar button:hover { border-color: var(--navy-800); color: var(--navy-800); }
.filter-bar button.active { background: var(--navy-900); border-color: var(--navy-900); color: var(--white); }
.project-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.project-grid .project-card .zoom { aspect-ratio: 4/3.4; }

/* News (tin-tuc.html) */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.news-card { background: var(--white); border: 1px solid var(--gray-200); border-radius: var(--radius); overflow: hidden; transition: var(--transition); }
.news-card:hover { box-shadow: var(--shadow-md); transform: translateY(-6px); }
.news-card .zoom { aspect-ratio: 16/10; }
.news-card .body { padding: 22px; }
.news-card .meta { font-size: 12.5px; color: var(--gray-500); margin-bottom: 10px; font-weight: 600; letter-spacing: 0.3px; text-transform: uppercase; }
.news-card h3 { font-size: 17px; margin-bottom: 10px; line-height: 1.4; }
.news-card p { font-size: 14px; color: var(--gray-500); margin-bottom: 14px; }
.news-card .read-more { font-size: 13.5px; font-weight: 700; color: var(--blue-accent); display: inline-flex; align-items: center; gap: 6px; }
.news-card .read-more svg { width: 13px; height: 13px; transition: transform var(--transition); }
.news-card:hover .read-more svg { transform: translateX(3px); }

/* Contact page */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 60px; }
.contact-info-list { display: flex; flex-direction: column; gap: 22px; margin-top: 30px; }
.contact-info-item { display: flex; gap: 16px; align-items: flex-start; }
.contact-info-item .ic {
  width: 46px; height: 46px;
  border-radius: 10px;
  background: var(--gray-100);
  color: var(--navy-800);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.contact-info-item .ic svg { width: 20px; height: 20px; }
.contact-info-item h4 { font-size: 15px; color: var(--navy-900); margin-bottom: 3px; }
.contact-info-item p { font-size: 14.5px; color: var(--gray-500); }
.contact-form { background: var(--gray-100); border-radius: var(--radius); padding: 40px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 18px; }
.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-group.full { grid-column: 1 / -1; }
.form-group label { font-size: 13.5px; font-weight: 700; color: var(--gray-900); }
.form-group input, .form-group textarea {
  padding: 13px 16px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 14.5px;
  background: var(--white);
  transition: border-color var(--transition);
}
.form-group input:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--blue-accent);
}
.contact-form textarea { resize: vertical; min-height: 120px; }
.map-frame { border-radius: var(--radius); overflow: hidden; margin-top: 60px; height: 380px; }
.map-frame iframe { width: 100%; height: 100%; border: 0; }

/* CTA banner reused on inner pages */
.cta-banner {
  background: var(--navy-900);
  border-radius: var(--radius);
  padding: 50px 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
}
.cta-banner h3 { color: var(--white); font-size: 26px; margin-bottom: 8px; }
.cta-banner p { color: rgba(255,255,255,0.65); }
.cta-banner .btn-primary { background: var(--blue-accent); }
.cta-banner .btn-primary:hover { background: var(--white); color: var(--navy-900); }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer { background: var(--navy-900); color: rgba(255, 255, 255, 0.7); padding-top: 80px; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.footer-brand .logo .text strong { color: var(--white); }
.footer-brand .logo .text span { color: rgba(255, 255, 255, 0.55); }
.footer-brand .logo .mark { background: rgba(255, 255, 255, 0.1); }
.footer-brand p { margin: 18px 0 22px; font-size: 14.5px; max-width: 300px; }
.social-row { display: flex; gap: 10px; }
.social-row a {
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.25);
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.social-row a svg { width: 16px; height: 16px; }
.social-row a:hover { background: var(--blue-accent); border-color: var(--blue-accent); }
.footer-col h4 { color: var(--white); font-size: 16px; margin-bottom: 22px; }
.footer-col ul { display: flex; flex-direction: column; gap: 13px; }
.footer-col a {
  font-size: 14.5px;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: color var(--transition), padding-left var(--transition);
}
.footer-col a::before { content: "›"; color: var(--blue-accent); font-weight: 700; }
.footer-col a:hover { color: var(--white); padding-left: 4px; }
.footer-contact li { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 16px; font-size: 14.5px; }
.footer-contact li:last-child { margin-bottom: 0; }
.footer-contact svg { width: 17px; height: 17px; flex-shrink: 0; margin-top: 2px; color: var(--blue-accent); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  font-size: 13.5px;
  flex-wrap: wrap;
  gap: 10px;
}
.footer-bottom .links { display: flex; gap: 22px; }
.footer-bottom a:hover { color: var(--white); }

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 1080px) {
  .hero-title { font-size: 44px; }
  .footer-grid { grid-template-columns: 1fr 1fr; row-gap: 40px; }
  .stat-row { grid-template-columns: repeat(2, 1fr); row-gap: 30px; }
}

@media (max-width: 960px) {
  .main-nav { position: fixed; top: 88px; left: 0; right: 0; bottom: 0; background: var(--white); flex-direction: column; padding: 20px 24px; transform: translateX(-100%); transition: transform var(--transition); overflow-y: auto; }
  .main-nav.open { transform: translateX(0); }
  .main-nav ul { flex-direction: column; gap: 4px; }
  .main-nav a { display: block; padding: 14px 4px; border-bottom: 1px solid var(--gray-200); }
  .nav-toggle { display: flex; }
  .hotline span.label { display: none; }
  .hero-title { font-size: 38px; }
  .hero-text { max-width: none; }
  .slide-media { aspect-ratio: 4 / 3.4; }
  .banner-content .hero-actions { flex-wrap: wrap; }
  .feature-strip ul { grid-template-columns: repeat(2, 1fr); }
  .feature-strip li { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.1); }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-media { order: -1; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .project-card { flex: 0 0 calc((100% - 24px) / 2); }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .service-detail { grid-template-columns: 1fr; gap: 26px; }
  .service-detail.reverse .media { order: 0; }
  .project-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .process-step { grid-template-columns: 60px 1fr; gap: 18px; }
}

@media (max-width: 640px) {
  .section { padding: 60px 0; }
  .header-inner { height: 74px; }
  .logo .text strong { font-size: 16px; }
  .logo .text span { display: none; }
  .hotline { padding: 11px 16px; }
  .hero-title { font-size: 30px; }
  .slide-media { aspect-ratio: 3 / 4; min-height: 480px; }
  .slide-media::before { background: rgba(255, 255, 255, 0.86); }
  .section-title { font-size: 27px; }
  .about-title { font-size: 26px; }
  .feature-strip ul { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: 1fr; }
  .about-media { grid-template-columns: 1fr; }
  .about-media .main-img { min-height: 220px; }
  .about-media .side-imgs { flex-direction: row; }
  .project-card { flex: 0 0 78%; }
  .carousel-arrow { display: none; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: repeat(2, 1fr); }
  .project-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .contact-form { padding: 26px; }
  .cta-banner { padding: 36px 26px; flex-direction: column; text-align: center; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { justify-content: center; }
}