:root {
  --primary: #1f70ea;
  --primary-deep: #0e59d4;
  --primary-soft: #dfeeff;
  --text-main: #121212;
  --text-secondary: #5d6675;
  --surface: #ffffff;
  --surface-soft: #f3f8ff;
  --line: #d7e4f7;
  --shadow: 0 18px 45px rgba(15, 85, 191, 0.12);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --section-gap: 90px;
  --container-width: 1320px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  color: var(--text-main);
  background: #fff;
  line-height: 1.75;
}

img {
  display: block;
}

a {
  text-decoration: none;
}

.site-container {
  max-width: var(--container-width);
}

.section-space {
  padding: var(--section-gap) 0;
}

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

.section-title h2 {
  margin: 0;
  font-size: clamp(2rem, 3vw, 3.25rem);
  font-weight: 800;
  letter-spacing: 0.02em;
}

.section-title p {
  margin: 14px 0 0;
  color: var(--text-secondary);
  font-size: 1.05rem;
}

.section-title--light h2,
.section-title--light p {
  color: #fff;
}

.site-header {
  background: rgba(255, 255, 255, 0.96);
  transition: background-color 0.25s ease, box-shadow 0.25s ease, backdrop-filter 0.25s ease;
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 10px 30px rgba(14, 54, 125, 0.1);
  backdrop-filter: blur(12px);
}

.navbar {
  padding: 20px 0;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
}

.brand-logo {
  display: block;
  width: auto;
  height: 56px;
  max-width: 320px;
  object-fit: contain;
}

.brand-logo--footer {
  height: 58px;
  max-width: 260px;
}

.navbar-nav .nav-link {
  position: relative;
  padding: 8px 4px;
  color: #232936;
  font-size: 1.1rem;
  font-weight: 600;
}

.navbar-nav .nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.2s ease;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
  color: var(--primary);
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
  transform: scaleX(1);
}

.nav-cta,
.hero-btn {
  min-width: 136px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--primary), #2d89ff);
  border: none;
  padding: 14px 28px;
  font-weight: 700;
  color: #fff;
  box-shadow: 0 16px 32px rgba(31, 112, 234, 0.22);
}

.nav-cta:hover,
.hero-btn:hover {
  background: linear-gradient(135deg, #135ed4, #1274ff);
}

.hero-btn--light {
  background: #fff;
  color: var(--primary-deep);
  border: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: 0 16px 32px rgba(13, 67, 160, 0.2);
}

.hero-btn--light:hover {
  background: #eef5ff;
  color: #0e57cf;
}

.hero-section {
  position: relative;
  overflow: hidden;
  padding: 98px 0 0;
  background:
    linear-gradient(90deg, rgba(239, 246, 255, 0.96) 0%, rgba(239, 246, 255, 0.92) 48%, rgba(16, 92, 217, 0) 48%),
    linear-gradient(90deg, rgba(18, 104, 229, 0) 0%, rgba(17, 101, 225, 0) 48%, rgba(12, 89, 209, 1) 48%, rgba(8, 82, 196, 1) 100%);
}

.hero-section::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 52%;
  background:
    radial-gradient(circle at 20% 22%, rgba(164, 207, 255, 0.55), transparent 20%),
    radial-gradient(circle at 10% 65%, rgba(201, 230, 255, 0.7), transparent 22%),
    linear-gradient(135deg, rgba(174, 213, 255, 0.16) 10%, transparent 10.5%) 0 70px/260px 200px;
  pointer-events: none;
}

.hero-copy {
  position: relative;
  z-index: 1;
  max-width: 620px;
  padding: 70px 0;
}

.hero-carousel {
  position: relative;
}

.hero-carousel .carousel-inner {
  overflow: visible;
}

.hero-slide {
  min-height: 640px;
  padding: 36px 0 88px;
}

.hero-slide--primary {
  background:
    linear-gradient(90deg, rgba(239, 246, 255, 0.96) 0%, rgba(239, 246, 255, 0.92) 48%, rgba(16, 92, 217, 0) 48%),
    linear-gradient(90deg, rgba(18, 104, 229, 0) 0%, rgba(17, 101, 225, 0) 48%, rgba(12, 89, 209, 1) 48%, rgba(8, 82, 196, 1) 100%);
}

.hero-slide--secondary {
  background:
    radial-gradient(circle at 18% 20%, rgba(185, 220, 255, 0.55), transparent 18%),
    linear-gradient(90deg, rgba(244, 249, 255, 0.98) 0%, rgba(244, 249, 255, 0.94) 50%, rgba(8, 91, 212, 0.98) 50%, rgba(43, 145, 255, 0.94) 100%);
}

.hero-slide--tertiary {
  background:
    radial-gradient(circle at 16% 16%, rgba(176, 218, 255, 0.5), transparent 18%),
    linear-gradient(90deg, rgba(243, 248, 255, 0.98) 0%, rgba(243, 248, 255, 0.94) 50%, rgba(7, 86, 203, 0.98) 50%, rgba(18, 112, 231, 0.95) 100%);
}

.hero-kicker {
  margin: 0 0 18px;
  color: var(--primary-deep);
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero-copy h1 {
  margin: 0;
  color: var(--primary-deep);
  font-size: clamp(3rem, 7vw, 5.6rem);
  line-height: 1.05;
  font-weight: 900;
}

.hero-text {
  margin: 28px 0 0;
  font-size: clamp(1.1rem, 2vw, 1.7rem);
  font-weight: 600;
  color: #2a3140;
}

.hero-text--secondary {
  margin-top: 8px;
}

.hero-actions {
  margin-top: 50px;
}

.hero-slide--secondary .hero-copy,
.hero-slide--tertiary .hero-copy {
  max-width: 660px;
}

.hero-visual {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-visual--card,
.hero-visual--stats {
  min-height: 520px;
}

.hero-image {
  position: relative;
  z-index: 1;
  width: min(100%, 640px);
  filter: drop-shadow(0 34px 55px rgba(5, 38, 97, 0.26));
}

.hero-image--device {
  width: min(100%, 340px);
  max-height: 440px;
  object-fit: contain;
}

.hero-image--cover {
  width: 100%;
  max-height: 250px;
  object-fit: cover;
  filter: none;
}

.hero-curve {
  position: absolute;
  top: -60px;
  bottom: -60px;
  width: 64px;
  border-radius: 60px;
}

.hero-curve--left {
  left: 4%;
  background: #ffcd7b;
}

.hero-curve--right {
  left: 6.1%;
  width: 40px;
  background: #fff;
}

.hero-device-card,
.hero-stat-card {
  overflow: hidden;
  width: min(100%, 560px);
  border-radius: 34px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.06));
  box-shadow: 0 28px 60px rgba(4, 43, 112, 0.22);
  backdrop-filter: blur(10px);
}

.hero-device-card {
  display: grid;
  grid-template-columns: 1fr 0.95fr;
  align-items: center;
  gap: 18px;
  padding: 34px;
}

.hero-device-card__copy span {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.18);
  color: #fff;
  font-size: 0.92rem;
  font-weight: 700;
}

.hero-device-card__copy strong {
  display: block;
  margin-top: 18px;
  color: #fff;
  font-size: clamp(1.9rem, 3vw, 2.65rem);
  line-height: 1.2;
  font-weight: 900;
}

.hero-device-card__copy p {
  margin: 14px 0 0;
  color: rgba(255, 255, 255, 0.88);
  font-size: 1.05rem;
}

.hero-stat-card {
  padding: 22px;
}

.hero-stat-card__image {
  overflow: hidden;
  border-radius: 24px;
}

.hero-stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.hero-stat-grid div {
  padding: 18px 16px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
}

.hero-stat-grid strong {
  display: block;
  font-size: 1.8rem;
  line-height: 1;
  font-weight: 900;
}

.hero-stat-grid span {
  display: block;
  margin-top: 8px;
  font-size: 0.95rem;
  opacity: 0.92;
}

.hero-indicators {
  bottom: 26px;
  margin-bottom: 0;
  gap: 10px;
}

.hero-indicators [data-bs-target] {
  width: 34px;
  height: 6px;
  margin: 0;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.42);
  opacity: 1;
}

.hero-indicators .active {
  width: 56px;
  background: #fff;
}

.hero-control {
  top: 50%;
  bottom: auto;
  width: 88px;
  opacity: 1;
  transform: translateY(-50%);
  z-index: 3;
}

.hero-control--prev {
  left: clamp(12px, 2vw, 34px);
}

.hero-control--next {
  right: clamp(12px, 2vw, 34px);
}

.hero-control__icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin: 0 auto;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.32);
  color: #fff;
  font-size: 1.1rem;
  backdrop-filter: blur(10px);
}

.problem-card {
  text-align: center;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.problem-card img {
  width: 100%;
  aspect-ratio: 1.28 / 1;
  object-fit: cover;
}

.problem-card h3 {
  margin: 20px 0 10px;
  color: var(--primary);
  font-size: 1.9rem;
  font-weight: 800;
}

.problem-card p {
  margin: 0;
  color: #4d5563;
  font-size: 1.02rem;
}

.problem-card:hover {
  transform: translateY(-8px);
}

.products-section {
  background: linear-gradient(180deg, #eaf3ff 0%, #eff7ff 100%);
}

.product-nav-wrap {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.product-nav-item {
  display: flex;
  align-items: center;
  gap: 18px;
  width: 100%;
  border: 0;
  background: #fff;
  color: #2d4c7a;
  border-radius: 0;
  padding: 22px 28px;
  font-size: 1.7rem;
  font-weight: 700;
  text-align: left;
  box-shadow: 0 14px 30px rgba(47, 93, 163, 0.07);
  transition: transform 0.25s ease, background-color 0.25s ease, color 0.25s ease;
}

.product-nav-icon {
  color: var(--primary);
  font-size: 2rem;
}

.product-nav-item.active {
  background: linear-gradient(135deg, var(--primary) 0%, #0e63df 100%);
  color: #fff;
}

.product-nav-item.active .product-nav-icon {
  color: #fff;
}

.product-nav-item:hover {
  transform: translateX(6px);
}

.product-controls {
  display: flex;
  gap: 18px;
  padding-top: 12px;
}

.product-arrow {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 3px solid var(--primary);
  background: transparent;
  color: var(--primary);
  font-size: 1.7rem;
  transition: all 0.25s ease;
}

.product-arrow:hover {
  background: var(--primary);
  color: #fff;
}

.product-stage {
  position: relative;
  min-height: 560px;
}

.product-panel {
  position: absolute;
  inset: 0;
  padding: 54px 52px;
  border-radius: 0;
  background: linear-gradient(135deg, #0f62dc 0%, #1d79ef 54%, #58b7ff 100%);
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translateY(22px);
  transition: opacity 0.35s ease, transform 0.35s ease;
}

.product-panel.active {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.product-copy h3 {
  margin: 0;
  color: #fff;
  font-size: clamp(2.4rem, 4vw, 4rem);
  font-weight: 900;
}

.product-copy h4 {
  margin: 10px 0 36px;
  color: #fff;
  font-size: clamp(1.9rem, 2.8vw, 3rem);
  font-weight: 800;
}

.product-points {
  display: grid;
  gap: 20px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: #fff;
  font-size: 1.5rem;
  font-weight: 500;
}

.product-points i {
  margin-right: 10px;
  font-size: 1.4rem;
}

.product-image {
  max-height: 420px;
  margin-left: auto;
  filter: drop-shadow(0 26px 42px rgba(2, 42, 112, 0.28));
}

.product-image--wide {
  max-height: 320px;
}

.compare-head {
  padding: 36px 34px;
  color: #fff;
}

.compare-head h3 {
  margin: 0;
  font-size: 2.1rem;
  font-weight: 800;
}

.compare-head p {
  margin: 8px 0 0;
  font-size: 1.25rem;
}

.compare-head--legacy {
  background: #838383;
}

.compare-head--smart {
  background: linear-gradient(135deg, var(--primary), #2783f2);
}

.compare-card {
  padding: 30px 32px;
  background: #fff;
  border: 1px solid #ebeff5;
  box-shadow: 0 12px 26px rgba(20, 55, 109, 0.06);
}

.compare-card + .compare-card {
  margin-top: 16px;
}

.compare-card h4 {
  margin: 0 0 14px;
  color: #111;
  font-size: 1.95rem;
  font-weight: 800;
}

.compare-column--smart .compare-card h4 {
  color: var(--primary);
}

.compare-card p {
  margin: 0;
  color: #303743;
  font-size: 1.15rem;
}

.compare-card strong {
  color: var(--primary);
}

.vs-badge {
  display: grid;
  place-items: center;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: radial-gradient(circle at 32% 28%, #71baff 0%, #2f86ff 62%, #1961de 100%);
  color: #fff;
  font-size: 3rem;
  font-weight: 900;
  box-shadow: 0 0 0 12px rgba(49, 139, 255, 0.18);
}

.benefits-section {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 20% 100%, rgba(119, 203, 255, 0.55), transparent 28%),
    radial-gradient(circle at 84% 100%, rgba(119, 203, 255, 0.42), transparent 25%),
    linear-gradient(135deg, #0f6aea 0%, #1e77ec 40%, #1578f5 100%);
}

.benefits-section::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 180px;
  background:
    radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.2) 0 2px, transparent 3px) 0 0/18px 18px,
    radial-gradient(circle at 60% 60%, rgba(255, 255, 255, 0.16) 0 2px, transparent 3px) 0 0/26px 26px;
  opacity: 0.75;
  pointer-events: none;
}

.benefit-card {
  position: relative;
  z-index: 1;
  height: 100%;
  padding: 30px 28px;
  background: #fff;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.benefit-card:hover,
.service-card:hover,
.case-card:hover,
.promise-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow);
}

.benefit-icon {
  display: inline-grid;
  place-items: center;
  width: 66px;
  height: 66px;
  border-radius: 18px;
  color: #fff;
  font-size: 1.9rem;
}

.bg-pink {
  background: linear-gradient(135deg, #ff51bf, #dd68ff);
}

.bg-yellow {
  background: linear-gradient(135deg, #ffb500, #ffcb2f);
}

.bg-red {
  background: linear-gradient(135deg, #ff4b4b, #ff6e49);
}

.benefit-card h3 {
  margin: 22px 0 8px;
  font-size: 2rem;
  font-weight: 800;
}

.benefit-card p {
  margin: 0;
  color: #555e6d;
  font-size: 1.14rem;
}

.promise-card {
  position: relative;
  height: 100%;
  min-height: 410px;
  border: 2px solid #8dbdff;
  background: #fff;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.promise-body {
  padding: 44px 34px 92px;
  text-align: center;
}

.promise-icon {
  color: var(--primary);
  font-size: 4rem;
}

.promise-card h3 {
  margin: 18px 0;
  color: var(--primary);
  font-size: 2rem;
  font-weight: 800;
}

.promise-card p {
  margin: 0;
  color: #3e4654;
  font-size: 1.1rem;
}

.promise-foot {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 12px 18px;
  background: linear-gradient(135deg, var(--primary), #1574ef);
  color: #fff;
  text-align: center;
  font-size: 1.15rem;
  font-weight: 700;
}

.about-section {
  background: #ecf5ff;
}

.about-copy {
  height: 100%;
  padding: 60px 50px 60px 0;
}

.about-copy h2 {
  margin: 0 0 28px;
  font-size: clamp(2rem, 3vw, 3.2rem);
  font-weight: 900;
}

.about-copy p {
  margin: 0 0 18px;
  font-size: 1.16rem;
  color: #232936;
}

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

.stats-section {
  padding: 44px 0 66px;
}

.stat-card h3 {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 4px;
  margin: 0;
  color: var(--primary);
  font-size: clamp(2.6rem, 4vw, 4.5rem);
  line-height: 1;
  font-weight: 900;
}

.stat-card small {
  margin-top: 10px;
  color: #111;
  font-size: 0.46em;
  font-weight: 700;
}

.stat-card p {
  margin: 10px 0 0;
  color: #353c48;
  font-size: 1.2rem;
}

.service-section {
  background: linear-gradient(180deg, #edf6ff 0%, #edf6ff 100%);
}

.service-card,
.case-card {
  height: 100%;
  background: #fff;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.service-card img,
.case-card img {
  width: 100%;
  aspect-ratio: 1.62 / 1;
  object-fit: cover;
}

.service-card__body,
.case-card__body {
  padding: 18px 18px 6px;
}

.service-card h3,
.case-card h3 {
  margin: 0;
  font-size: 1.8rem;
  font-weight: 800;
}

.service-card p {
  margin: 6px 0 0;
  color: #555e6d;
  font-size: 1.06rem;
}

.case-card__body {
  background: #eef6ff;
  padding: 24px 26px 64px;
}

.site-footer {
  position: relative;
  overflow: hidden;
  padding: 72px 0 56px;
  background: linear-gradient(135deg, #0a4fb8 0%, #135ecb 100%);
  color: #fff;
}

.site-footer::before {
  content: "";
  position: absolute;
  left: -100px;
  bottom: -110px;
  width: 300px;
  height: 300px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.15), transparent 60%),
    linear-gradient(45deg, rgba(255, 255, 255, 0.18), transparent 45%);
  transform: rotate(12deg);
}

.site-footer h3 {
  margin: 0 0 18px;
  font-size: 1.8rem;
  font-weight: 800;
}

.footer-links {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-links a,
.footer-links li {
  color: rgba(255, 255, 255, 0.94);
  font-size: 1.08rem;
}

.footer-links a:hover {
  color: #fff;
}

.footer-links--plain li {
  line-height: 1.8;
}

.back-to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 50;
  width: 52px;
  height: 52px;
  border: 0;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #46a0ff);
  color: #fff;
  font-size: 1.3rem;
  box-shadow: 0 18px 32px rgba(25, 104, 231, 0.28);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: opacity 0.25s ease, visibility 0.25s ease, transform 0.25s ease;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.reveal {
  opacity: 0;
  transform: translateY(38px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

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

@media (max-width: 1399.98px) {
  :root {
    --container-width: 1180px;
  }

  .brand-logo {
    height: 50px;
    max-width: 286px;
  }

  .navbar-nav .nav-link,
  .problem-card p,
  .compare-card p,
  .benefit-card p {
    font-size: 1rem;
  }

  .problem-card h3,
  .compare-card h4,
  .benefit-card h3,
  .service-card h3,
  .case-card h3 {
    font-size: 1.55rem;
  }

  .product-nav-item {
    font-size: 1.35rem;
  }

  .product-points {
    font-size: 1.2rem;
  }
}

@media (max-width: 991.98px) {
  :root {
    --section-gap: 70px;
  }

  .navbar {
    padding: 16px 0;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 10px 30px rgba(14, 54, 125, 0.08);
  }

  .navbar-collapse {
    margin-top: 16px;
    padding: 18px;
    border-radius: 18px;
    background: #fff;
  }

  .nav-cta {
    margin-top: 12px;
  }

  .hero-section {
    padding-top: 112px;
    background:
      linear-gradient(180deg, rgba(239, 246, 255, 0.98) 0%, rgba(239, 246, 255, 0.98) 50%, rgba(8, 82, 196, 1) 50%, rgba(8, 82, 196, 1) 100%);
  }

  .hero-section::before {
    width: 100%;
    height: 48%;
  }

  .hero-copy {
    padding: 28px 0 12px;
    text-align: center;
    margin: 0 auto;
  }

  .hero-slide {
    min-height: auto;
    padding-bottom: 96px;
  }

  .hero-slide--primary {
    background:
      linear-gradient(180deg, rgba(239, 246, 255, 0.98) 0%, rgba(239, 246, 255, 0.98) 54%, rgba(8, 82, 196, 1) 54%, rgba(8, 82, 196, 1) 100%);
  }

  .hero-slide--secondary {
    background:
      radial-gradient(circle at 20% 12%, rgba(185, 220, 255, 0.5), transparent 22%),
      linear-gradient(180deg, rgba(244, 249, 255, 0.98) 0%, rgba(244, 249, 255, 0.96) 54%, rgba(8, 91, 212, 0.98) 54%, rgba(43, 145, 255, 0.94) 100%);
  }

  .hero-slide--tertiary {
    background:
      radial-gradient(circle at 18% 12%, rgba(176, 218, 255, 0.46), transparent 22%),
      linear-gradient(180deg, rgba(243, 248, 255, 0.98) 0%, rgba(243, 248, 255, 0.96) 54%, rgba(7, 86, 203, 0.98) 54%, rgba(18, 112, 231, 0.95) 100%);
  }

  .hero-actions {
    margin-top: 32px;
  }

  .hero-visual {
    min-height: auto;
    padding-bottom: 20px;
  }

  .hero-device-card {
    grid-template-columns: 1fr;
    padding: 26px;
    text-align: center;
  }

  .hero-stat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-curve--left {
    left: 4%;
    top: 2%;
    bottom: 10%;
  }

  .hero-curve--right {
    left: 8%;
    top: 2%;
    bottom: 10%;
  }

  .hero-control {
    display: none;
  }

  .products-section .row.align-items-center {
    row-gap: 28px;
  }

  .product-stage {
    min-height: 0;
  }

  .product-panel {
    position: relative;
    min-height: auto;
    display: none;
  }

  .product-panel.active {
    display: block;
  }

  .compare-section .row {
    row-gap: 26px;
  }

  .about-copy {
    padding: 48px 26px;
  }

  .site-footer {
    padding: 56px 0 48px;
  }
}

@media (max-width: 767.98px) {
  :root {
    --section-gap: 56px;
  }

  .brand-logo {
    height: 42px;
    max-width: 224px;
  }

  .brand-logo--footer {
    height: 50px;
    max-width: 206px;
  }

  .hero-copy h1 {
    font-size: 2.45rem;
  }

  .hero-text {
    font-size: 1.05rem;
  }

  .hero-device-card,
  .hero-stat-card {
    border-radius: 24px;
  }

  .hero-stat-grid {
    grid-template-columns: 1fr;
  }

  .hero-indicators {
    bottom: 18px;
  }

  .problem-card h3 {
    font-size: 1.3rem;
  }

  .product-nav-item {
    padding: 18px 20px;
    font-size: 1.16rem;
  }

  .product-controls {
    justify-content: center;
  }

  .product-arrow {
    width: 54px;
    height: 54px;
    font-size: 1.35rem;
  }

  .product-panel {
    padding: 28px 24px;
  }

  .product-copy h3 {
    font-size: 2rem;
  }

  .product-copy h4 {
    font-size: 1.5rem;
    margin-bottom: 24px;
  }

  .product-points {
    font-size: 1rem;
    gap: 14px;
  }

  .compare-head,
  .compare-card,
  .promise-body {
    padding-left: 22px;
    padding-right: 22px;
  }

  .compare-head h3,
  .benefit-card h3,
  .promise-card h3,
  .service-card h3,
  .case-card h3 {
    font-size: 1.35rem;
  }

  .compare-card h4 {
    font-size: 1.3rem;
  }

  .benefit-card {
    padding: 24px 22px;
  }

  .about-copy {
    padding: 34px 18px;
  }

  .stat-card h3 {
    font-size: 2.4rem;
  }

  .case-card__body {
    padding: 18px 18px 52px;
  }

  .site-footer {
    padding-bottom: 42px;
  }

  .back-to-top {
    right: 16px;
    bottom: 16px;
  }
}