:root {
  --bg: #0f1115;
  --bg-soft: #f4f5f7;
  --text: #17191d;
  --muted: #666d78;
  --white: #ffffff;
  --line: rgba(20, 22, 27, 0.12);
  --line-dark: rgba(255, 255, 255, 0.13);
  --card: #ffffff;
  --dark-card: #171a20;
  --accent: #23c163;
  --accent-dark: #15a651;
  --accent-soft: rgba(35, 193, 99, 0.14);
  --gold: #e7c873;
  --radius-lg: 30px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.16);
  --shadow-soft: 0 20px 50px rgba(18, 21, 26, 0.08);
  --container: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  background: var(--white);
  overflow-x: hidden;
}

body.no-scroll {
  overflow: hidden;
}

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

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration: none;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -80px;
  z-index: 999;
  background: var(--accent);
  color: var(--bg);
  padding: 10px 14px;
  border-radius: 999px;
}

.skip-link:focus {
  top: 16px;
}

.container {
  width: min(100% - 40px, var(--container));
  margin-inline: auto;
}

.section {
  padding: 96px 0;
}

.section-soft {
  padding: 96px 0;
  background: var(--bg-soft);
}

.section-dark {
  padding: 96px 0;
  color: var(--white);
  background:
    radial-gradient(circle at 80% 20%, rgba(35, 193, 99, 0.18), transparent 28%),
    radial-gradient(circle at 20% 0%, rgba(231, 200, 115, 0.12), transparent 30%),
    var(--bg);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(15, 17, 21, 0.86);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line-dark);
}

.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--white);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 13px;
  background: linear-gradient(135deg, var(--accent), #66f2a0);
  color: #061008;
  font-size: 14px;
}

.brand-text {
  white-space: nowrap;
}

.nav {
  display: flex;
  align-items: center;
  gap: 24px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 14px;
}

.nav a:hover {
  color: var(--white);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 13px 20px;
  border: 0;
  border-radius: 999px;
  font-weight: 800;
  letter-spacing: -0.01em;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--accent);
  color: #051108;
  box-shadow: 0 14px 30px rgba(35, 193, 99, 0.24);
}

.btn-primary:hover {
  background: #35d977;
}

.btn-outline {
  color: var(--white);
  border: 1px solid var(--line-dark);
  background: rgba(255, 255, 255, 0.06);
}

.btn-small {
  min-height: 42px;
  padding: 10px 16px;
  font-size: 14px;
}

.btn-full {
  width: 100%;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero {
  padding-top: 72px;
  min-height: calc(100vh - 76px);
  display: flex;
  align-items: center;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(320px, 0.78fr);
  align-items: center;
  gap: 56px;
}

.hero h1,
.section-heading h2,
.split-copy h2,
.fitment-copy h2,
.faq-copy h2,
.final-box h2,
.offer-box h2 {
  margin: 0;
  line-height: 1.05;
  letter-spacing: -0.055em;
}

.hero h1 {
  font-size: clamp(40px, 6.5vw, 76px);
  max-width: 840px;
}

.hero-lead {
  margin: 24px 0 0;
  max-width: 650px;
  font-size: clamp(18px, 2vw, 21px);
  color: rgba(255, 255, 255, 0.78);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.trust-row span {
  padding: 9px 13px;
  border: 1px solid var(--line-dark);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 13px;
  background: rgba(255, 255, 255, 0.05);
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.photo-card {
  position: relative;
  overflow: hidden;
  border-radius: 36px;
  box-shadow: var(--shadow);
  border: 1px solid var(--line-dark);
  background: #06070a;
}

.hero-photo {
  max-width: 440px;
  transform: rotate(1.5deg);
}

.hero-photo::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.28), transparent 42%);
  pointer-events: none;
}

.floating-badge {
  position: absolute;
  z-index: 2;
  padding: 10px 13px;
  border-radius: 999px;
  color: var(--white);
  font-size: 13px;
  font-weight: 800;
  background: rgba(15, 17, 21, 0.84);
  border: 1px solid var(--line-dark);
  backdrop-filter: blur(10px);
}

.badge-top {
  top: 18px;
  left: 18px;
}

.badge-bottom {
  right: 18px;
  bottom: 18px;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 44px;
}

.section-heading.center {
  margin-inline: auto;
  text-align: center;
}

.section-heading h2,
.split-copy h2,
.fitment-copy h2,
.faq-copy h2,
.final-box h2,
.offer-box h2 {
  font-size: clamp(32px, 4.6vw, 54px);
}

.section-heading p,
.split-copy p,
.fitment-copy p,
.faq-copy p,
.final-box p,
.offer-box p {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.section-dark .section-heading p,
.section-dark .fitment-copy p,
.section-dark .final-box p {
  color: rgba(255, 255, 255, 0.72);
}

.card-grid {
  display: grid;
  gap: 18px;
}

.five-grid {
  grid-template-columns: repeat(5, 1fr);
}

.info-card,
.benefit-card,
.usecase-card,
.step,
.testimonial {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--card);
  box-shadow: var(--shadow-soft);
}

.info-card {
  padding: 22px;
}

.info-card .icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin-bottom: 22px;
  border-radius: 13px;
  color: var(--accent-dark);
  font-weight: 900;
  background: var(--accent-soft);
}

.info-card h3,
.benefit-card h3,
.usecase-card h3,
.step h3 {
  margin: 0 0 9px;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.info-card p,
.benefit-card p,
.usecase-card p,
.step p,
.testimonial p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 70px;
}

.split-grid.reverse {
  grid-template-columns: 0.9fr 1.1fr;
}

.photo-stack {
  position: relative;
  min-height: 620px;
}

.rounded-img {
  border-radius: 32px;
  object-fit: cover;
  box-shadow: var(--shadow);
}

.main-img {
  width: 74%;
  height: 580px;
}

.small-img {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 52%;
  height: 320px;
  border: 8px solid var(--bg-soft);
}

.check-list {
  display: grid;
  gap: 12px;
  margin: 26px 0 30px;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 32px;
  color: #343942;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 999px;
  color: #061008;
  background: var(--accent);
  font-size: 13px;
  font-weight: 900;
}

.benefit-grid {
  grid-template-columns: repeat(3, 1fr);
}

.benefit-card {
  padding: 28px;
}

.benefit-icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin-bottom: 22px;
  border-radius: 16px;
  color: #061008;
  background: var(--accent);
  font-weight: 900;
  font-size: 20px;
}

.fitment-grid {
  display: grid;
  grid-template-columns: 0.85fr 1fr;
  gap: 56px;
  align-items: start;
}

.mini-note {
  margin-top: 28px;
  padding: 16px;
  color: rgba(255, 255, 255, 0.76);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.06);
}

.mini-note code {
  color: var(--gold);
}

.fitment-form {
  padding: 28px;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
}

.form-row {
  display: grid;
  gap: 8px;
  margin-bottom: 16px;
}

.form-row.two-col {
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

label {
  color: rgba(255, 255, 255, 0.84);
  font-size: 14px;
  font-weight: 800;
}

input,
select {
  width: 100%;
  min-height: 50px;
  padding: 0 14px;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.09);
  outline: none;
}

select option {
  color: var(--text);
  background: var(--white);
}

input:focus,
select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(35, 193, 99, 0.14);
}

::placeholder {
  color: rgba(255, 255, 255, 0.45);
}

.form-note {
  margin: 14px 0 0;
  color: rgba(255, 255, 255, 0.58);
  font-size: 13px;
  text-align: center;
}

.detail-card {
  position: relative;
  overflow: hidden;
  border-radius: 32px;
  min-height: 560px;
  box-shadow: var(--shadow);
}

.detail-card img {
  width: 100%;
  height: 100%;
  min-height: 560px;
  object-fit: cover;
}

.detail-overlay {
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px;
  border: 1px solid var(--line-dark);
  border-radius: 20px;
  color: var(--white);
  background: rgba(15, 17, 21, 0.76);
  backdrop-filter: blur(12px);
}

.detail-overlay span {
  color: rgba(255, 255, 255, 0.68);
}

.spec-list {
  display: grid;
  gap: 12px;
  margin-top: 28px;
}

.spec-list div {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.spec-list span {
  color: var(--muted);
}

.compare {
  position: relative;
  overflow: hidden;
  max-width: 860px;
  height: 620px;
  margin-inline: auto;
  border-radius: 34px;
  box-shadow: var(--shadow);
  background: #111;
  user-select: none;
}

.compare-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.compare-after {
  position: absolute;
  inset: 0 auto 0 0;
  width: 55%;
  overflow: hidden;
}

.compare-after .compare-img {
  width: 860px;
  max-width: none;
}

.compare-range {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: ew-resize;
}

.compare-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 55%;
  width: 3px;
  background: var(--white);
  box-shadow: 0 0 0 999px transparent;
  pointer-events: none;
}

.compare-handle::after {
  content: "↔";
  position: absolute;
  top: 50%;
  left: 50%;
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  transform: translate(-50%, -50%);
  border-radius: 999px;
  color: var(--bg);
  background: var(--white);
  font-weight: 900;
}

.compare-label {
  position: absolute;
  top: 18px;
  z-index: 3;
  padding: 9px 13px;
  border-radius: 999px;
  color: var(--white);
  background: rgba(15, 17, 21, 0.75);
  border: 1px solid var(--line-dark);
  font-size: 13px;
  font-weight: 900;
}

.before-label {
  right: 18px;
}

.after-label {
  left: 18px;
}

.usecase-grid {
  grid-template-columns: repeat(4, 1fr);
}

.usecase-card {
  padding: 26px;
}

.gallery .section-heading p {
  color: rgba(255, 255, 255, 0.72);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  padding: 0;
  border: 1px solid var(--line-dark);
  border-radius: 28px;
  background: var(--dark-card);
  min-height: 440px;
}

.gallery-item img {
  width: 100%;
  height: 440px;
  object-fit: cover;
  opacity: 0.9;
  transition: transform 0.28s ease, opacity 0.28s ease;
}

.gallery-item:hover img {
  transform: scale(1.045);
  opacity: 1;
}

.gallery-item span {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 16px;
  padding: 14px 16px;
  color: var(--white);
  border-radius: 18px;
  background: rgba(15, 17, 21, 0.75);
  border: 1px solid var(--line-dark);
  font-weight: 900;
  text-align: left;
}

.testimonial-stack {
  display: grid;
  gap: 16px;
}

.testimonial {
  padding: 22px;
}

.stars {
  margin-bottom: 10px;
  color: #ffba3a;
  letter-spacing: 0.08em;
}

.testimonial span {
  display: block;
  margin-top: 12px;
  color: var(--text);
  font-weight: 900;
}

.offer-box {
  display: grid;
  grid-template-columns: 1fr 0.65fr;
  gap: 40px;
  align-items: center;
  padding: 42px;
  border-radius: var(--radius-lg);
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
}

.offer-points {
  display: grid;
  gap: 12px;
}

.offer-points span {
  padding: 14px 16px;
  border-radius: 16px;
  background: var(--bg-soft);
  font-weight: 800;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.step {
  padding: 26px;
}

.step span {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-bottom: 24px;
  border-radius: 16px;
  color: #061008;
  background: var(--accent);
  font-weight: 900;
}

.faq-grid {
  display: grid;
  grid-template-columns: 0.75fr 1.15fr;
  gap: 56px;
  align-items: start;
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--white);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.faq-question {
  position: relative;
  width: 100%;
  padding: 20px 54px 20px 20px;
  border: 0;
  background: transparent;
  color: var(--text);
  font-weight: 900;
  text-align: left;
}

.faq-question::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 24px;
  color: var(--accent-dark);
}

.faq-question[aria-expanded="true"]::after {
  content: "−";
}

.faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.24s ease;
}

.faq-answer p {
  overflow: hidden;
  margin: 0;
  padding: 0 20px;
  color: var(--muted);
}

.faq-item.is-open .faq-answer {
  grid-template-rows: 1fr;
}

.faq-item.is-open .faq-answer p {
  padding-bottom: 20px;
}

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

.final-box {
  max-width: 800px;
}

.final-box .btn {
  margin-top: 28px;
}

.site-footer {
  padding: 46px 0 110px;
  color: rgba(255, 255, 255, 0.7);
  background: #090a0d;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.45fr 0.45fr;
  gap: 28px;
}

.footer-grid p {
  max-width: 480px;
}

.footer-grid strong {
  display: block;
  color: var(--white);
  margin-bottom: 12px;
}

.footer-grid a,
.footer-link {
  display: block;
  margin: 8px 0;
  color: rgba(255, 255, 255, 0.72);
  background: transparent;
  border: 0;
  padding: 0;
  text-align: left;
}

.footer-brand {
  margin-bottom: 14px;
}

.floating-wa {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 60;
  min-height: 52px;
  padding: 0 18px;
  border: 0;
  border-radius: 999px;
  color: #061008;
  background: var(--accent);
  box-shadow: 0 18px 35px rgba(0, 0, 0, 0.25);
  font-weight: 900;
  transform: translateY(100px);
  opacity: 0;
  transition: transform 0.24s ease, opacity 0.24s ease;
}

.floating-wa.is-visible {
  transform: translateY(0);
  opacity: 1;
}

.sticky-cta {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 55;
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 10px 14px calc(10px + env(safe-area-inset-bottom));
  color: var(--white);
  background: rgba(15, 17, 21, 0.92);
  border-top: 1px solid var(--line-dark);
  backdrop-filter: blur(12px);
}

.sticky-cta span {
  font-weight: 900;
  font-size: 14px;
}

.sticky-cta .btn {
  min-height: 42px;
  padding: 10px 15px;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: none;
  place-items: center;
  padding: 24px;
  background: rgba(0, 0, 0, 0.88);
}

.lightbox.is-open {
  display: grid;
}

.lightbox img {
  max-width: min(92vw, 980px);
  max-height: 86vh;
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.lightbox-close {
  position: absolute;
  top: 18px;
  right: 18px;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border: 1px solid var(--line-dark);
  border-radius: 999px;
  color: var(--white);
  background: rgba(255, 255, 255, 0.12);
  font-size: 28px;
  line-height: 1;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1060px) {
  .five-grid,
  .benefit-grid,
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .usecase-grid,
  .steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-grid,
  .split-grid,
  .split-grid.reverse,
  .fitment-grid,
  .faq-grid,
  .offer-box {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-visual {
    justify-content: flex-start;
  }

  .photo-stack {
    min-height: 560px;
  }
}

@media (max-width: 760px) {
  .container {
    width: min(100% - 28px, var(--container));
  }

  .section,
  .section-soft,
  .section-dark {
    padding: 72px 0;
  }

  .header-inner {
    min-height: 66px;
  }

  .nav {
    display: none;
  }

  .brand-text {
    display: none;
  }

  .site-header .btn-small {
    min-height: 38px;
    padding: 8px 13px;
  }

  .hero {
    padding-top: 46px;
  }

  .hero-grid {
    gap: 34px;
  }

  .hero-actions {
    display: grid;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .trust-row span {
    font-size: 12px;
  }

  .hero-photo {
    max-width: 100%;
    transform: none;
    border-radius: 28px;
  }

  .floating-badge {
    font-size: 12px;
  }

  .five-grid,
  .benefit-grid,
  .gallery-grid,
  .usecase-grid,
  .steps {
    grid-template-columns: 1fr;
  }

  .info-card,
  .benefit-card,
  .usecase-card,
  .step,
  .testimonial {
    padding: 22px;
  }

  .photo-stack {
    min-height: 0;
  }

  .main-img {
    width: 100%;
    height: 430px;
  }

  .small-img {
    position: relative;
    width: 78%;
    height: 240px;
    margin: -78px 0 0 auto;
    border-width: 6px;
  }

  .form-row.two-col {
    grid-template-columns: 1fr;
  }

  .fitment-form {
    padding: 22px;
  }

  .detail-card,
  .detail-card img {
    min-height: 390px;
  }

  .spec-list div {
    display: grid;
    gap: 4px;
  }

  .compare {
    height: 520px;
    border-radius: 26px;
  }

  .compare-after .compare-img {
    width: calc(100vw - 28px);
  }

  .gallery-item,
  .gallery-item img {
    min-height: 360px;
    height: 360px;
  }

  .offer-box {
    padding: 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .floating-wa {
    display: none;
  }

  .sticky-cta {
    display: flex;
  }
}

@media (max-width: 390px) {
  .hero h1 {
    font-size: 34px;
  }

  .section-heading h2,
  .split-copy h2,
  .fitment-copy h2,
  .faq-copy h2,
  .final-box h2,
  .offer-box h2 {
    font-size: 30px;
  }

  .sticky-cta span {
    max-width: 160px;
  }
}