:root {
  --green: #6bae23;
  --green-dark: #57961a;
  --green-soft: #eaf5c8;
  --green-soft-2: #f3f8dc;
  --yellow: #f2d701;
  --yellow-dark: #e0c600;
  --green-panel: #3ca200;
  --mint: #e8f5d3;
  --black: #12151a;
  --text: #3a4150;
  --muted: #7a8290;
  --line: rgba(18, 21, 26, 0.08);
  --bg: #ffffff;
  --bg-soft: #f7f8f5;
  --panel: #f6f7f2;
  --radius: 28px;
  --radius-lg: 40px;
  --radius-pill: 999px;
  --container: 1500px;
  --gutter: 1.25rem;
  --header-h: 5rem;
  --shadow: 0 18px 50px rgba(18, 21, 26, 0.1);
  --font: 'Be Vietnam Pro', system-ui, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 0.75rem);
}

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

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button, input, select, textarea { font: inherit; }

.container {
  width: min(100% - (var(--gutter) * 2), var(--container));
  margin-inline: auto;
}

h1, h2, h3 {
  color: var(--black);
  line-height: 1.15;
  letter-spacing: -0.028em;
  font-weight: 800;
  text-wrap: balance;
}

h1 {
  font-size: clamp(1.85rem, 3.6vw, 2.75rem);
}

h2 {
  font-size: clamp(1.7rem, 3.1vw, 2.5rem);
}

h3 {
  font-size: 1.12rem;
  font-weight: 700;
  letter-spacing: -0.018em;
  line-height: 1.3;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: 3rem;
  padding: 0.75rem 1.35rem;
  border-radius: var(--radius-pill);
  border: none;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.btn-primary {
  background: var(--green);
  color: #fff;
}
.btn-primary:hover {
  background: var(--green-dark);
  color: #fff;
}
.btn-ghost {
  background: transparent;
  color: var(--black);
  border: 1.5px solid rgba(18, 21, 26, 0.14);
}
.btn-ghost:hover {
  border-color: var(--green);
  color: var(--green);
}
.btn-light {
  background: #fff;
  color: var(--black);
  box-shadow: 0 8px 24px rgba(18, 21, 26, 0.12);
}
.btn-light:hover {
  color: var(--green);
}
.btn-yellow {
  background: var(--yellow);
  color: #000;
  font-weight: 700;
  border-radius: 24px;
  min-height: 3rem;
  padding: 0.85rem 1.75rem;
}
.btn-yellow:hover {
  background: var(--yellow-dark);
  color: #000;
}
.btn-mint {
  background: var(--mint);
  color: #000;
  font-weight: 700;
  border-radius: 24px;
  min-height: 3rem;
  padding: 0.85rem 1.75rem;
  white-space: nowrap;
}
.btn-mint:hover {
  background: #fff;
  color: #000;
}
.btn-soft {
  background: #fff;
  color: var(--black);
  box-shadow: 0 2px 10px rgba(18, 21, 26, 0.06);
  padding-right: 0.55rem;
}
.btn-soft:hover { color: var(--green); }
.btn-ico {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--green-soft);
  color: var(--black);
  font-size: 0.75rem;
}
.btn-block { width: 100%; }

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: #fff;
  transition: box-shadow 0.25s;
}
.header.scrolled {
  box-shadow: 0 8px 24px rgba(18, 21, 26, 0.06);
}
.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  max-width: 16.5rem;
}
.logo-mark {
  width: 2.55rem;
  height: 2.55rem;
  border-radius: 50%;
  background: var(--green);
  position: relative;
  flex-shrink: 0;
  box-shadow: 0 6px 16px rgba(107, 174, 35, 0.35);
}
.logo-mark::before,
.logo-mark::after {
  content: "";
  position: absolute;
  width: 0.58rem;
  height: 0.8rem;
  top: 0.62rem;
  background: #fff;
  border-radius: 80% 0 55% 50%;
}
.logo-mark::before { left: 0.62rem; transform: rotate(-32deg); }
.logo-mark::after { right: 0.56rem; transform: rotate(32deg) scaleX(-1); }
.logo-copy { display: flex; flex-direction: column; gap: 0.18rem; min-width: 0; }
.logo-name {
  font-size: 1.12rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  line-height: 1;
}
.logo-vu { color: var(--black); }
.logo-decal { color: var(--green); }
.logo-tag {
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--muted);
  text-transform: none;
  line-height: 1.3;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-left: auto;
}
.nav ul {
  display: flex;
  align-items: center;
  gap: 0.15rem;
}
.nav ul a {
  display: inline-flex;
  padding: 0.55rem 0.7rem;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--black);
}
.nav ul a:hover,
.nav ul a.active { color: var(--green); }
.nav-phone {
  font-weight: 800;
  font-size: 1rem;
  color: var(--yellow);
  letter-spacing: 0.02em;
  white-space: nowrap;
  margin-left: 0.35rem;
  text-shadow: 0 0 0 transparent;
}
.nav-phone:hover { color: var(--yellow-dark); }
.nav-cta {
  white-space: nowrap;
  min-height: 2.7rem;
  padding: 0.55rem 1.2rem;
  font-size: 0.88rem;
}

.header-actions {
  display: none;
  align-items: center;
  gap: 0.45rem;
  margin-left: auto;
  position: relative;
  z-index: 120;
}
.header-call,
.menu-toggle {
  width: 2.65rem;
  height: 2.65rem;
  border-radius: 50%;
  border: 0;
  background: #f1f2f0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--black);
  position: relative;
  z-index: 120;
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
}
.header-call {
  font-size: 0.9rem;
}
.header-call:hover,
.menu-toggle:hover {
  background: #e7ebd9;
  color: var(--green-panel);
}
.menu-toggle {
  display: none;
}
.nav-backdrop {
  position: fixed;
  inset: 0;
  z-index: 95;
  background: rgba(18, 21, 26, 0.35);
  border: 0;
  padding: 0;
  cursor: pointer;
}
.nav-backdrop[hidden] { display: none !important; }
.menu-toggle span {
  position: absolute;
  left: 0.45rem;
  height: 2px;
  background: var(--black);
  transition: 0.25s;
  border-radius: 2px;
}
.menu-toggle span:nth-child(1) {
  top: 0.95rem;
  width: 1.55rem;
}
.menu-toggle span:nth-child(2) {
  top: 1.4rem;
  width: 1.1rem;
}
.nav-open .menu-toggle span:nth-child(1) {
  top: 1.2rem;
  width: 1.45rem;
  transform: rotate(45deg);
}
.nav-open .menu-toggle span:nth-child(2) {
  top: 1.2rem;
  width: 1.45rem;
  transform: rotate(-45deg);
}

/* Hero — Solar X style */
.hero {
  padding: 0.5rem 0 1.5rem;
  background: #fff;
}
.hero-frame {
  position: relative;
  min-height: min(78vh, 720px);
  border-radius: 48px;
  overflow: hidden;
  background: #1b2430;
  display: flex;
  align-items: center;
}
.hero-slides {
  position: absolute;
  inset: 0;
}
.hero-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 55% 40%;
  filter: saturate(0.95) contrast(1.02) brightness(1.03);
  opacity: 0;
  transition: opacity 1s ease;
}
.hero-img.is-active { opacity: 1; }
.hero-dots {
  position: absolute;
  z-index: 4;
  left: 50%;
  bottom: 1.35rem;
  transform: translateX(-50%);
  display: flex;
  gap: 0.45rem;
}
.hero-dots button {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.45);
  cursor: pointer;
  padding: 0;
}
.hero-dots button.is-active { background: #fff; width: 1.35rem; border-radius: 999px; }
.hero-panel {
  position: relative;
  z-index: 2;
  width: min(100%, 30rem);
  margin: 2.5rem 0 2.5rem 2.5rem;
  padding: 2.85rem 2.4rem 2.15rem;
  background: #f7f8f3;
  border-radius: 40px;
  box-shadow: 0 28px 70px rgba(18, 21, 26, 0.18);
}
.hero-panel h1 {
  font-size: clamp(1.85rem, 3.1vw, 2.65rem);
  line-height: 1.12;
  letter-spacing: -0.032em;
  font-weight: 800;
}
.hero-lead {
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.6;
  font-weight: 400;
  max-width: 30em;
}
.hero-trust {
  display: flex;
  flex-wrap: nowrap;
  gap: 1.15rem;
  margin-top: 1.85rem;
  padding-top: 1.35rem;
  border-top: 1px solid rgba(18, 21, 26, 0.08);
  color: var(--black);
  font-size: 0.9rem;
  font-weight: 500;
}
.hero-trust li {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  white-space: nowrap;
}
.hero-trust .check {
  width: 1.4rem;
  height: 1.4rem;
  border-radius: 50%;
  background: var(--green);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.62rem;
  flex-shrink: 0;
}

.hero-mobile-cta { display: none; }

.hero-float {
  position: absolute;
  z-index: 3;
  right: 2.25rem;
  top: 50%;
  transform: translateY(-58%);
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0.85rem;
  width: min(100%, 15.75rem);
}
.hero-float .btn {
  width: 100%;
  justify-content: center;
  min-height: 3.25rem;
  font-weight: 700;
  font-size: 0.95rem;
  box-shadow: 0 12px 32px rgba(18, 21, 26, 0.16);
}

.hero-rating {
  position: absolute;
  z-index: 3;
  right: 2.25rem;
  bottom: 1.85rem;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.1rem;
  background: rgba(255, 255, 255, 0.96);
  border-radius: 18px;
  box-shadow: 0 12px 32px rgba(18, 21, 26, 0.14);
}
.hero-rating-stars {
  color: #f5b400;
  letter-spacing: 0.06em;
  font-size: 0.85rem;
  line-height: 1;
}
.hero-rating-copy {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}
.hero-rating-copy strong {
  color: var(--black);
  font-size: 0.95rem;
  line-height: 1.2;
}
.hero-rating-copy span {
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 500;
}

/* Brands */
.sec-brands {
  padding: 1.5rem 0 0.5rem;
}
.brands-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.25rem 2.75rem;
  padding: 1rem 0 0.25rem;
}
.brands-row span {
  font-weight: 700;
  letter-spacing: 0.08em;
  color: rgba(18, 21, 26, 0.28);
  font-size: 1.05rem;
}

/* Sections common */
.sec { padding: 5rem 0; }
.sec-label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: 0.85rem;
}
.sec-label::after {
  content: "//";
  color: var(--green);
  letter-spacing: 0.02em;
  font-weight: 800;
}
.sec-label-slash::after {
  /* kept for markup compatibility — slash already on .sec-label */
  content: "//";
  color: var(--green);
  letter-spacing: 0.02em;
  font-weight: 800;
}
.sec-label-light {
  color: rgba(255, 255, 255, 0.78);
}
.sec-label-light::after {
  content: "//";
  color: var(--yellow);
  letter-spacing: 0.02em;
  font-weight: 800;
}
.sec-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.75rem;
  margin-bottom: 2.5rem;
}
.sec-head h2 {
  margin: 0;
  max-width: 15em;
}
.sec-title-center {
  text-align: center;
  max-width: 14em;
  margin: 0 auto 2.75rem;
}
.sec-sub {
  margin: 0.75rem 0 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.6;
  font-weight: 400;
  max-width: 36em;
}

/* Services */
.sec-services { background: #fff; }
.svc-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.35rem;
}
.svc-grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.15rem;
}
.svc-grid-6 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.svc-card {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 0.95rem 0.95rem 1.15rem;
  border-radius: 28px;
  background: linear-gradient(180deg, var(--green-soft) 0%, #fff 52%);
  color: inherit;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.svc-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 36px rgba(18, 21, 26, 0.08);
}
.svc-img {
  border-radius: 20px;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: #e8efe0;
}
.svc-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.35s ease;
}
.svc-card:hover .svc-img img {
  transform: scale(1.03);
}
.svc-card h3 {
  margin: 0.1rem 0 0;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
}
.svc-grid-4 .svc-card h3 {
  font-size: 1rem;
  min-height: 2.6em;
}
.svc-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.5;
  flex: 1;
}
.svc-grid-4 .svc-card p {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.svc-card .btn-soft {
  align-self: flex-start;
  margin-top: auto;
  font-size: 0.88rem;
}

/* Steps */
.sec-steps { background: var(--bg-soft); }
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.step-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 1.75rem 1.5rem;
  box-shadow: 0 8px 24px rgba(18, 21, 26, 0.04);
}
.step-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--green);
  line-height: 1;
  margin-bottom: 0.85rem;
}
.step-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.step-card p {
  margin-top: 0.55rem;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.55;
}

/* Who we are + Why Choose Us — Solar X stacked */
.sec-story {
  background: #fff;
  padding-top: 2rem;
  padding-bottom: 2rem;
}
.story-stack {
  position: relative;
}
.about-block {
  position: relative;
  z-index: 2;
  background: #f5f6f0;
  border-radius: 40px;
  padding: clamp(2rem, 4vw, 3.25rem);
}
.about-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(1.75rem, 3.5vw, 3.25rem);
  align-items: center;
}
.about-copy h2 {
  max-width: 16em;
  margin-bottom: 1rem;
  font-size: clamp(1.7rem, 3vw, 2.45rem);
  line-height: 1.14;
}
.about-lead {
  color: var(--muted);
  max-width: 40em;
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid rgba(18, 21, 26, 0.1);
  font-size: 1.05rem;
  line-height: 1.65;
  font-weight: 400;
}
.check-list {
  display: grid;
  gap: 1.15rem;
  margin: 0 0 2rem;
}
.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  font-weight: 600;
  color: var(--black);
  line-height: 1.55;
  font-size: 0.95rem;
}
.check-list .check {
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  background: var(--green);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.68rem;
  flex-shrink: 0;
  margin-top: 0.12rem;
}
.about-media {
  border-radius: 32px;
  overflow: hidden;
  min-height: 420px;
  height: 100%;
  box-shadow: 0 18px 40px rgba(18, 21, 26, 0.1);
}
.about-media img {
  width: 100%;
  height: 100%;
  min-height: 420px;
  object-fit: cover;
  object-position: center;
  display: block;
}

.why-block {
  position: relative;
  z-index: 1;
  margin-top: -2.75rem;
  background: var(--green-panel);
  border-radius: 32px;
  padding: clamp(3.5rem, 6vw, 4.75rem) clamp(1.75rem, 4vw, 3.25rem) clamp(2.5rem, 4vw, 3.5rem);
  color: #fff;
}
.why-block h2 {
  color: #fff;
  max-width: 13em;
  font-size: clamp(1.75rem, 3.2vw, 2.55rem);
  line-height: 1.14;
  letter-spacing: -0.03em;
}
.why-top {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: 2.75rem;
}
.why-copy .sec-label {
  margin-bottom: 0.85rem;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}
.stat-card {
  background: transparent;
  border-radius: 0;
  padding: 0.35rem 1.75rem;
  border-right: 1px solid rgba(255, 255, 255, 0.3);
}
.stat-card:first-child { padding-left: 0; }
.stat-card:last-child {
  border-right: none;
  padding-right: 0;
}
.stat-num {
  font-size: clamp(2.5rem, 4vw, 2.9rem);
  font-weight: 400;
  color: #fff;
  line-height: 1;
  letter-spacing: -0.02em;
}
.stat-num span {
  color: #fff;
  font-weight: 400;
}
.stat-lbl {
  margin-top: 0.65rem;
  color: rgba(255, 255, 255, 0.88);
  font-weight: 400;
  font-size: 0.95rem;
}

/* Testimonials */
.sec-testimonials { background: #fff; }
.t-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.t-card {
  background: var(--bg-soft);
  border-radius: var(--radius);
  padding: 1.6rem 1.4rem;
}
.t-stars {
  color: var(--green);
  letter-spacing: 0.08em;
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
}
.t-card p {
  color: var(--text);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
}
.t-card footer {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
.t-card strong { color: var(--black); font-size: 0.95rem; }
.t-card span { color: var(--muted); font-size: 0.85rem; }

/* Quote form — Solar X yellow panel */
.sec-quote {
  background: #fff;
  padding-bottom: 3.5rem;
}
.quote-panel {
  background: linear-gradient(135deg, #f2d701 0%, #eef6c4 48%, #e3f0b0 100%);
  border-radius: 72px 40px 40px 40px;
  padding: clamp(2.25rem, 4.5vw, 3.75rem) clamp(1.75rem, 4vw, 3.5rem);
}
.quote-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: clamp(1.75rem, 3.5vw, 3.25rem);
  align-items: start;
}
.quote-copy {
  padding-top: 0.25rem;
}
.quote-panel .sec-label {
  margin-bottom: 0.7rem;
  color: rgba(18, 21, 26, 0.72);
}
.quote-panel h2 {
  margin: 0 0 0.85rem;
  font-size: clamp(2rem, 3.4vw, 2.85rem);
  line-height: 1.1;
  letter-spacing: -0.032em;
  max-width: 9em;
}
.quote-lead {
  margin: 0 0 1.75rem;
  max-width: 28rem;
  color: rgba(18, 21, 26, 0.68);
  font-size: 1.05rem;
  line-height: 1.6;
  font-weight: 400;
}
.quote-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem 1.15rem;
  background: rgba(255, 255, 255, 0.55);
  padding: 1.5rem;
  box-shadow: 0 12px 36px rgba(18, 21, 26, 0.06);
  border-radius: 28px;
}
.quote-form label {
  display: grid;
  gap: 0.35rem;
}
.quote-form .qf-full,
.quote-form .qf-actions,
.quote-form .form-note {
  grid-column: 1 / -1;
}
.quote-form span {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--black);
}
.quote-form span em {
  font-style: normal;
  font-weight: 500;
  color: rgba(18, 21, 26, 0.55);
}
.quote-form input,
.quote-form select,
.quote-form textarea {
  width: 100%;
  border: none;
  border-radius: 14px;
  padding: 0.9rem 1rem;
  background: #fff;
  color: var(--black);
  outline: none;
  box-shadow: 0 1px 0 rgba(18, 21, 26, 0.04);
  transition: box-shadow 0.2s;
}
.quote-form input:focus,
.quote-form select:focus,
.quote-form textarea:focus {
  box-shadow: 0 0 0 2px rgba(60, 162, 0, 0.35);
}
.quote-form textarea {
  resize: vertical;
  min-height: 110px;
}
.qf-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.85rem 1.25rem;
  margin-top: 0.15rem;
}
.btn-dark {
  background: #12151a;
  color: #fff;
  font-weight: 700;
  border-radius: 999px;
  min-height: 3.15rem;
  padding: 0.9rem 1.85rem;
  box-shadow: 0 10px 24px rgba(18, 21, 26, 0.18);
}
.btn-dark:hover {
  background: #000;
  color: #fff;
}
.quote-call {
  color: var(--black);
  font-size: 0.95rem;
}
.quote-call:hover { text-decoration: underline; }
.quote-call strong { font-weight: 800; }
.form-note {
  font-size: 0.82rem;
  color: rgba(18, 21, 26, 0.58);
  text-align: left;
  margin: 0;
}
.quote-guarantee {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-top: 0.25rem;
  padding: 0;
  border-top: none;
  background: transparent;
  border-radius: 0;
}
.quote-guarantee-ico {
  flex: 0 0 auto;
  width: 2.85rem;
  height: 2.85rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.72);
  color: var(--green-panel);
  font-size: 1.05rem;
  box-shadow: 0 4px 14px rgba(18, 21, 26, 0.06);
}
.quote-guarantee h3 {
  margin: 0 0 0.3rem;
  font-size: 1.12rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.quote-guarantee p {
  margin: 0;
  color: rgba(18, 21, 26, 0.7);
  font-size: 0.92rem;
  line-height: 1.5;
  max-width: 26rem;
}

/* FAQ */
.sec-faq {
  background: #fff;
  padding-top: 2rem;
}
.faq-panel {
  background: var(--bg-soft);
  border-radius: 72px 40px 40px 40px;
  padding: clamp(2.25rem, 4.5vw, 3.75rem) clamp(1.75rem, 4vw, 3.5rem);
}
.faq-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(2rem, 4vw, 3.5rem);
  align-items: start;
}
.faq-intro .sec-label { margin-bottom: 0.7rem; }
.faq-intro h2 {
  margin: 0 0 0.95rem;
  font-size: clamp(1.9rem, 3vw, 2.55rem);
  letter-spacing: -0.03em;
  line-height: 1.12;
  max-width: 11em;
}
.faq-cta-line {
  margin: 0 0 0.55rem !important;
  color: var(--black) !important;
  font-size: 1.12rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.35;
  max-width: 18em;
}
.faq-intro p {
  margin: 0 0 1.5rem;
  color: var(--muted);
  max-width: 28rem;
  line-height: 1.6;
  font-size: 1rem;
}
.faq-intro .btn { margin-right: 0.65rem; margin-bottom: 0.65rem; }
.faq-zalo { vertical-align: middle; }
.faq-list {
  display: grid;
  gap: 0;
  background: #fff;
  border-radius: 28px;
  padding: 0.35rem 0;
  overflow: hidden;
  box-shadow: 0 8px 28px rgba(18, 21, 26, 0.04);
}
.faq-item {
  background: transparent;
  border-radius: 0;
  overflow: hidden;
  border: none;
  border-bottom: 1px solid rgba(18, 21, 26, 0.08);
}
.faq-item:last-child { border-bottom: none; }
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  text-align: left;
  background: transparent;
  border: none;
  padding: 1.25rem 1.5rem;
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--black);
  cursor: pointer;
}
.faq-q i {
  color: var(--muted);
  font-size: 0.85rem;
  transition: transform 0.25s, color 0.25s;
}
.faq-a {
  display: none;
  padding: 0 1.5rem 1.25rem;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.55;
}
.faq-item.active {
  border-color: rgba(18, 21, 26, 0.08);
  box-shadow: none;
}
.faq-item.active .faq-q { color: var(--green-panel); }
.faq-item.active .faq-a { display: block; }
.faq-item.active .faq-q i {
  transform: rotate(180deg);
  color: var(--green);
}

/* Gallery */
.sec-gallery { background: #fff; }
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.gallery-item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4 / 3;
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s;
}
.gallery-item:hover img { transform: scale(1.05); }
.gallery-item span,
.gallery-item figcaption {
  position: absolute;
  left: 1rem;
  bottom: 1rem;
  background: rgba(255, 255, 255, 0.92);
  color: var(--black);
  font-weight: 600;
  font-size: 0.85rem;
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-pill);
}

/* Footer — Solar X pale green panel */
.footer {
  background: #fff;
  color: var(--text);
  padding: 1.5rem 0 0;
  margin-top: 0.5rem;
}
.footer-panel {
  background: #e9f1d0;
  border-radius: 72px 40px 0 0;
  padding: clamp(2.75rem, 5vw, 4rem) clamp(1.75rem, 3.5vw, 3rem) 0;
}
.footer-panel-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
  padding-bottom: clamp(2rem, 3.5vw, 2.75rem);
}
.footer-brand {
  display: grid;
  gap: 2.75rem;
}
.footer-brand-name {
  font-size: clamp(1.85rem, 3.2vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 0.4rem;
}
.footer-brand-name .logo-vu { color: var(--black); }
.footer-brand-name .logo-decal { color: var(--green-panel); }
.footer-company {
  margin: 0 0 0.35rem;
  color: var(--black);
  font-size: 0.98rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.footer-tag {
  color: #5c6754;
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  font-weight: 500;
  line-height: 1.45;
}
.footer-brand .btn-yellow {
  padding-inline: 1.5rem;
}
.footer-heading {
  color: var(--black);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 1.05rem;
}
.footer-svc-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem 2.5rem;
  max-width: 34rem;
}
.footer-svc-cols ul,
.footer-side .f-col ul {
  display: grid;
  gap: 0.65rem;
}
.footer-svc-cols a,
.footer-side .f-col a {
  color: #5c6754;
  font-size: 0.95rem;
  font-weight: 500;
}
.footer-svc-cols a:hover,
.footer-side .f-col a:hover {
  color: var(--green-panel);
}

.footer-side {
  display: grid;
  gap: 2.25rem;
  padding-top: 0.35rem;
}
.footer-side-cols {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 1.5rem 2rem;
}
.footer-news-note {
  color: #5c6754;
  font-size: 0.95rem;
  margin-bottom: 1rem;
  max-width: 26rem;
}
.footer-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-bottom: 0.25rem;
}
.footer-cta-row .btn {
  min-height: 2.85rem;
}
.footer-cta-row .btn-soft {
  background: #fff;
  color: var(--black);
}
.footer-cta-row .btn-soft:hover {
  background: #fff;
  color: var(--green-panel);
}

.f-contact {
  display: grid;
  gap: 0.85rem;
}
.f-contact li {
  display: grid;
  gap: 0.12rem;
  font-size: 0.95rem;
  color: var(--black);
}
.f-contact > li > span:first-child {
  color: #6b7364;
  font-size: 0.84rem;
  font-weight: 600;
}
.f-contact a {
  color: var(--black);
  font-weight: 600;
}
.f-contact a:hover { color: var(--green-panel); }
.f-addr { color: var(--black); font-weight: 500; }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: #fff;
  border-radius: 32px 32px 0 0;
  padding: 1.15rem 1.35rem 1.25rem;
  margin-top: 0.5rem;
  font-size: 0.88rem;
  color: var(--muted);
}
.footer-bottom p {
  max-width: 42rem;
  line-height: 1.45;
}
.footer-social-top {
  display: flex;
  gap: 0.5rem;
}
.footer-social-top a {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--black);
  font-size: 1.15rem;
  transition: color 0.2s;
}
.footer-social-top a:hover {
  color: var(--green-panel);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Tips */
.sec-tips { background: var(--bg-soft); }
.tips-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.tip-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(18, 21, 26, 0.04);
}
.tip-img {
  aspect-ratio: 16 / 10;
  overflow: hidden;
}
.tip-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.tip-body { padding: 1.15rem 1.2rem 1.35rem; }
.tip-cat {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 0.45rem;
}
.tip-body h3 {
  font-size: 1.12rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: 0.5rem;
}
.tip-body p {
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.55;
}

.text-center { text-align: center; }

.zalo-mark {
  font-weight: 800;
  font-size: 0.72rem;
  letter-spacing: -0.03em;
  line-height: 1;
}
.footer-social-top .footer-zalo {
  font-size: 0.62rem;
}
.footer-social-top .zalo-mark {
  font-size: 0.62rem;
}

.float-actions {
  position: fixed;
  right: 1.15rem;
  bottom: 1.15rem;
  z-index: 90;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-items: center;
}
.float-btn {
  position: relative;
  width: 3.35rem;
  height: 3.35rem;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.15rem;
  box-shadow: 0 10px 24px rgba(18, 21, 26, 0.18);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  animation: float-bob 2.8s ease-in-out infinite;
}
.float-btn:hover {
  animation: none;
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 14px 28px rgba(18, 21, 26, 0.22);
}
.float-phone {
  background: var(--green);
  animation-delay: 0.35s;
  box-shadow: 0 10px 24px rgba(107, 174, 35, 0.35);
}
.float-zalo {
  background: #0068ff;
  box-shadow: 0 10px 24px rgba(0, 104, 255, 0.35);
}
.float-zalo .zalo-mark {
  font-size: 0.78rem;
}
.float-pulse {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid currentColor;
  opacity: 0.55;
  animation: float-ring 2s ease-out infinite;
  pointer-events: none;
}
.float-phone .float-pulse { color: var(--green); }
.float-zalo .float-pulse {
  color: #0068ff;
  animation-delay: 0.45s;
}

@keyframes float-bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}
@keyframes float-ring {
  0% {
    transform: scale(1);
    opacity: 0.55;
  }
  70% {
    transform: scale(1.55);
    opacity: 0;
  }
  100% {
    transform: scale(1.55);
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .float-btn,
  .float-pulse { animation: none; }
}

/* Responsive */
@media (max-width: 980px) {
  .header-actions { display: inline-flex; }
  .menu-toggle { display: inline-flex; }
  .nav {
    position: fixed;
    inset: 0 0 0 auto;
    width: min(20rem, 88vw);
    height: 100vh;
    height: 100dvh;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    gap: 0.85rem;
    padding: 5.75rem 1.35rem 2rem;
    transform: translateX(105%);
    transition: transform 0.3s;
    box-shadow: -12px 0 40px rgba(18, 21, 26, 0.1);
    z-index: 110;
    overflow-y: auto;
    margin-left: 0;
  }
  body.nav-open { overflow: hidden; }
  body.nav-open .nav { transform: translateX(0); }
  .nav ul { flex-direction: column; align-items: stretch; gap: 0.15rem; }
  .nav ul a {
    padding: 0.95rem 0.35rem;
    font-size: 1.08rem;
    border-bottom: 1px solid var(--line);
  }
  .nav-phone,
  .nav-cta {
    width: 100%;
    justify-content: center;
    text-align: center;
  }
  .nav-phone { margin: 0.5rem 0 0; font-size: 1.15rem; }
  .nav-cta { margin-top: 0.15rem; }

  .svc-grid,
  .svc-grid-6,
  .steps-grid,
  .stats-grid,
  .t-grid,
  .gallery-grid,
  .tips-grid {
    grid-template-columns: 1fr 1fr;
  }
  .svc-grid-4 {
    grid-template-columns: 1fr;
    gap: 0.95rem;
  }
  .svc-grid-4 .svc-card {
    display: grid;
    grid-template-columns: 11rem 1fr;
    grid-template-rows: auto auto auto;
    column-gap: 1rem;
    row-gap: 0.35rem;
    align-items: start;
    padding: 0.85rem;
    border-radius: 22px;
  }
  .svc-grid-4 .svc-img {
    grid-row: 1 / span 3;
    aspect-ratio: 1;
    border-radius: 16px;
    height: 100%;
    min-height: 7.5rem;
  }
  .svc-grid-4 .svc-card h3 {
    font-size: 1.05rem;
    min-height: 0;
    margin: 0;
  }
  .svc-grid-4 .svc-card p {
    font-size: 0.9rem;
    -webkit-line-clamp: 2;
  }
  .svc-grid-4 .svc-card .btn-soft {
    margin-top: 0.15rem;
  }
  .footer-panel-grid {
    grid-template-columns: 1fr;
    gap: 2.25rem;
  }
  .footer-side-cols { grid-template-columns: 1fr 1fr; }
  .hero-panel {
    width: min(100%, 26rem);
    margin: 1.75rem;
    padding: 2rem 1.65rem 1.65rem;
  }
  .hero-float {
    right: 1.25rem;
    width: 13.5rem;
    transform: translateY(-40%);
  }
  .hero-rating { right: 1.25rem; }
  .hero-trust { flex-wrap: wrap; gap: 0.75rem 1rem; }
  .stat-card { padding: 0.5rem 1rem; }
  .about-grid { grid-template-columns: 1fr; }
  .about-media,
  .about-media img { min-height: 280px; }
  .quote-panel,
  .faq-panel {
    border-radius: 48px 28px 28px 28px;
  }
  .quote-layout,
  .faq-grid { grid-template-columns: 1fr; }
  .quote-form { grid-template-columns: 1fr; }
  .sec-head,
  .why-top {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
  .brands-row {
    gap: 1.1rem 1.5rem;
    justify-content: center;
  }
  .sec-services .sec-head { margin-bottom: 1.5rem; }
}

@media (max-width: 640px) {
  :root { --gutter: 1rem; --header-h: 4.5rem; }
  .container { width: min(100% - (var(--gutter) * 2), var(--container)); }

  /* Header — Solar X soft circular actions */
  .logo { gap: 0.55rem; max-width: calc(100% - 6.5rem); }
  .logo-mark { width: 2rem; height: 2rem; box-shadow: none; }
  .logo-name { font-size: 1.05rem; }
  .logo-tag {
    display: block;
    font-size: 0.58rem;
    letter-spacing: 0;
    white-space: normal;
    line-height: 1.25;
    max-width: 11.5rem;
  }
  .header-call,
  .menu-toggle {
    width: 2.55rem;
    height: 2.55rem;
    background: #f0f1ee;
  }

  /* Hero — image + cream panel only (no CTA inside card) */
  .hero { padding: 0.1rem 0 0.85rem; }
  .hero-frame {
    min-height: auto;
    border-radius: 32px;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    background: #f5f6f1;
    overflow: hidden;
    box-shadow: none;
  }
  .hero-slides {
    position: relative;
    height: 270px;
    width: 100%;
    border-radius: 0;
    overflow: hidden;
    background: #1b2430;
    order: 1;
    flex: 0 0 270px;
  }
  .hero-img {
    height: 270px;
    object-position: center 35%;
  }
  .hero-dots {
    bottom: 4.1rem;
  }
  .hero-panel {
    order: 2;
    position: relative;
    z-index: 2;
    margin: -3.35rem 0 0;
    width: 100%;
    padding: 2.85rem 1.35rem 1.6rem;
    border-radius: 2.85rem 2.85rem 0 0;
    background: #f5f6f1;
    box-shadow: none;
  }
  .hero-panel h1 {
    font-size: clamp(1.5rem, 6.8vw, 1.9rem);
    line-height: 1.15;
    letter-spacing: -0.028em;
    font-weight: 800;
    margin: 0;
  }
  .hero-lead {
    margin: 0.85rem 0 0;
    font-size: 0.98rem;
    line-height: 1.58;
    color: #6b7280;
  }
  .hero-trust {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.8rem;
    margin-top: 1.35rem;
    padding-top: 1.2rem;
    border-top: 1px solid rgba(18, 21, 26, 0.08);
  }
  .hero-trust li {
    font-size: 0.95rem;
    white-space: normal;
  }
  .hero-trust .check {
    width: 1.5rem;
    height: 1.5rem;
    font-size: 0.65rem;
  }
  .hero-float,
  .hero-rating { display: none !important; }

  .hero-mobile-cta {
    display: grid;
    gap: 0.65rem;
    margin-top: 0.95rem;
  }
  .hero-mobile-cta .btn {
    width: 100%;
    min-height: 3.15rem;
    box-shadow: none;
    font-weight: 700;
  }
  .hero-mobile-cta .btn-light {
    background: #fff;
    border: 1px solid rgba(18, 21, 26, 0.1);
  }

  /* Sections */
  .sec { padding: 2.75rem 0; }
  .sec-story { padding: 1.5rem 0; }
  .sec-label { font-size: 0.68rem; letter-spacing: 0.12em; margin-bottom: 0.6rem; }
  .sec-head h2,
  .sec-title-center,
  .about-copy h2,
  .why-copy h2,
  .quote-panel h2,
  .faq-intro h2 {
    font-size: clamp(1.5rem, 6.4vw, 1.85rem);
    line-height: 1.18;
    letter-spacing: -0.025em;
  }
  .sec-head .btn {
    width: 100%;
    justify-content: center;
  }
  .faq-cta-line { font-size: 1.02rem; }

  /* Brands — single-row scroll, no awkward wrap */
  .sec-brands {
    padding: 0.85rem 0 0.15rem;
    border-bottom: 1px solid rgba(18, 21, 26, 0.06);
  }
  .sec-brands .container {
    width: 100%;
    padding: 0;
    max-width: none;
  }
  .brands-row {
    display: flex;
    flex-wrap: nowrap;
    justify-content: flex-start;
    align-items: center;
    gap: 1.35rem;
    padding: 0.65rem var(--gutter);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    mask-image: linear-gradient(90deg, transparent 0, #000 1rem, #000 calc(100% - 1rem), transparent);
  }
  .brands-row::-webkit-scrollbar { display: none; }
  .brands-row span {
    flex: 0 0 auto;
    font-size: 0.88rem;
    letter-spacing: 0.06em;
    color: rgba(18, 21, 26, 0.34);
    white-space: nowrap;
  }

  /* Services — cleaner mobile stack */
  .sec-services { padding-top: 2rem; padding-bottom: 2.25rem; }
  .sec-services .sec-head {
    margin-bottom: 1.15rem;
    gap: 0;
  }
  .sec-services .sec-head h2 {
    max-width: 12em;
    font-size: clamp(1.4rem, 6vw, 1.7rem);
  }
  .sec-services .sec-head .btn {
    display: none;
  }

  .svc-grid,
  .svc-grid-4,
  .svc-grid-6,
  .steps-grid,
  .stats-grid,
  .t-grid,
  .gallery-grid,
  .tips-grid { grid-template-columns: 1fr; gap: 0.85rem; }

  .svc-card {
    border-radius: 22px;
    padding: 0.85rem 0.85rem 1rem;
    gap: 0.55rem;
    background: linear-gradient(180deg, var(--green-soft) 0%, #fff 55%);
    display: flex;
    grid-template-columns: unset;
  }
  .svc-grid-4 .svc-card {
    display: flex;
    flex-direction: column;
    grid-template-columns: unset;
  }
  .svc-grid-4 .svc-img {
    grid-row: auto;
    aspect-ratio: 16 / 10;
    height: auto;
    min-height: 0;
  }
  .svc-card h3 {
    font-size: 1.05rem;
    margin-top: 0.15rem;
    min-height: 0;
  }
  .svc-card p {
    font-size: 0.88rem;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .svc-img {
    border-radius: 16px;
    overflow: hidden;
    aspect-ratio: 16 / 10;
  }
  .svc-card .btn-soft {
    align-self: flex-start;
    margin-top: 0.25rem;
    min-height: auto;
    padding: 0;
    background: transparent;
    box-shadow: none;
    color: var(--green-panel);
    font-size: 0.9rem;
    font-weight: 700;
    gap: 0.45rem;
  }
  .svc-card .btn-soft .btn-ico {
    width: 1.55rem;
    height: 1.55rem;
    font-size: 0.65rem;
  }

  .step-card {
    padding: 1.25rem 1.15rem;
    border-radius: 22px;
  }

  .about-block {
    border-radius: 26px;
    padding: 1.35rem 1.15rem 1.75rem;
  }
  .about-media,
  .about-media img {
    min-height: 220px;
    border-radius: 20px;
  }
  .about-lead { font-size: 0.95rem; }
  .check-list { gap: 0.85rem; }
  .why-block {
    border-radius: 26px;
    margin-top: -1.5rem;
    padding: 2.75rem 1.2rem 1.75rem;
  }
  .stats-grid { gap: 0; }
  .stat-card {
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.28);
    padding: 1rem 0;
    text-align: left;
  }
  .stat-card:last-child { border-bottom: none; }
  .stat-num { font-size: 2.35rem; }

  .t-card {
    border-radius: 22px;
    padding: 1.25rem;
  }

  .quote-panel,
  .faq-panel {
    border-radius: 32px 22px 22px 22px;
    padding: 1.65rem 1.25rem;
  }
  .quote-lead { font-size: 0.98rem; margin-bottom: 1.35rem; }
  .quote-form {
    padding: 1.15rem;
    border-radius: 22px;
  }
  .quote-guarantee { margin-top: 0.15rem; }
  .qf-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .qf-actions .btn-dark {
    width: 100%;
    justify-content: center;
  }
  .faq-list { border-radius: 22px; }
  .faq-q {
    padding: 1.05rem 1.15rem;
    font-size: 0.95rem;
  }
  .faq-a { padding: 0 1.15rem 1.1rem; }
  .faq-intro .btn {
    width: 100%;
    justify-content: center;
    margin-right: 0;
  }

  .gallery-item,
  .tip-card { border-radius: 22px; }

  /* Footer */
  .footer { padding-top: 0.5rem; }
  .footer-panel {
    border-radius: 32px 24px 0 0;
    padding: 1.75rem 1.2rem 0;
  }
  .footer-brand-name { font-size: 1.55rem; }
  .footer-tag { font-size: 0.95rem; margin-bottom: 1.15rem; }
  .footer-svc-cols,
  .footer-side-cols { grid-template-columns: 1fr; gap: 1.35rem; }
  .footer-cta-row {
    flex-direction: column;
  }
  .footer-cta-row .btn {
    width: 100%;
    justify-content: center;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
    border-radius: 20px 20px 0 0;
    padding: 1rem 1.05rem 1.15rem;
    font-size: 0.8rem;
  }
  .footer-brand { gap: 1.6rem; }

  .float-actions {
    right: 0.85rem;
    bottom: 0.85rem;
    gap: 0.65rem;
  }
  .float-btn {
    width: 3.05rem;
    height: 3.05rem;
    font-size: 1.05rem;
  }
  .float-zalo .zalo-mark {
    font-size: 0.7rem;
  }
}