:root {
  --qy-primary: #00bfc3;
  --qy-primary-dark: #00969a;
  --qy-blue: #1677ff;
  --qy-indigo: #2f5bea;
  --qy-dark: #13233a;
  --qy-body: #516173;
  --qy-muted: #7c8da0;
  --qy-soft: #f7fbff;
  --qy-soft-2: #eefafa;
  --qy-line: #e7eef6;
  --qy-card: #ffffff;
  --qy-radius: 1.25rem;
  --qy-shadow: 0 1.25rem 3.5rem rgba(19, 35, 58, .09);
  --qy-shadow-soft: 0 .875rem 2.2rem rgba(19, 35, 58, .07);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--qy-dark);
  background: #fff;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  text-decoration: none;
}

section,
header {
  scroll-margin-top: 96px;
}

.text-primary-qy {
  color: var(--qy-primary-dark) !important;
}

.text-gradient {
  background: linear-gradient(90deg, var(--qy-primary-dark), var(--qy-blue));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.bg-soft {
  background: var(--qy-soft);
}

.bg-soft-2 {
  background: var(--qy-soft-2);
}

.navbar {
  padding: 1rem 0;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(231, 238, 246, .85);
  transition: all .25s ease;
}

.navbar-brand img {
  height: 36px;
  width: auto;
}

.navbar .nav-link {
  color: #34465f;
  font-weight: 700;
  border-radius: 999px;
  padding: .65rem 1rem !important;
  transition: all .2s ease;
}

.navbar .nav-link:hover,
.navbar .nav-link.active {
  color: #fff !important;
  background: linear-gradient(90deg, var(--qy-primary), var(--qy-blue));
  box-shadow: 0 .75rem 1.6rem rgba(0, 191, 195, .22);
  transform: translateY(-1px);
}

.dropdown-menu {
  border: 1px solid var(--qy-line);
  box-shadow: var(--qy-shadow-soft);
  border-radius: 1rem;
  padding: .65rem;
}

.dropdown-item {
  font-weight: 650;
  border-radius: .75rem;
  padding: .7rem .85rem;
  color: #33465f;
}

.dropdown-item:hover {
  background: var(--qy-soft-2);
  color: var(--qy-primary-dark);
}

.btn-qy {
  border: 0;
  color: #fff !important;
  background: linear-gradient(90deg, var(--qy-primary), var(--qy-blue));
  box-shadow: 0 1rem 2rem rgba(0, 191, 195, .22);
  font-weight: 750;
}

.btn-qy:hover {
  filter: brightness(.97);
  transform: translateY(-1px);
}

.btn-outline-qy {
  color: var(--qy-primary-dark);
  border: 1px solid #bfecef;
  background: #fff;
  font-weight: 750;
}

.btn-outline-qy:hover {
  color: var(--qy-primary-dark);
  background: var(--qy-soft-2);
  border-color: var(--qy-primary);
  transform: translateY(-1px);
}

.hero {
  position: relative;
  padding: 8.5rem 0 5.25rem;
  overflow: hidden;
  background:
    radial-gradient(circle at 88% 10%, rgba(0, 191, 195, .14), transparent 24rem),
    radial-gradient(circle at 10% 18%, rgba(22, 119, 255, .12), transparent 23rem),
    linear-gradient(180deg, #fbfdff 0%, #fff 100%);
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -10% -28% -10%;
  height: 20rem;
  background: linear-gradient(90deg, rgba(0,191,195,.08), rgba(22,119,255,.08));
  filter: blur(3rem);
  z-index: 0;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-weight: 900;
  letter-spacing: -0.06rem;
  line-height: 1.12;
}

.hero-lead {
  color: var(--qy-body);
  font-size: 1.1rem;
  line-height: 1.85;
}

.kicker {
  display: inline-flex;
  gap: .55rem;
  align-items: center;
  color: #007b80;
  background: #e9fbfb;
  border: 1px solid #cff3f4;
  border-radius: 999px;
  font-size: .9rem;
  padding: .55rem .9rem;
  font-weight: 800;
}

.hero-visual {
  position: relative;
  border-radius: 2rem;
  background: #fff;
  border: 1px solid var(--qy-line);
  box-shadow: var(--qy-shadow);
  padding: 1rem;
}

.hero-visual img {
  border-radius: 1.35rem;
}

.hero-floating {
  position: absolute;
  left: -1rem;
  bottom: 1.35rem;
  max-width: 16rem;
  background: rgba(255,255,255,.92);
  border: 1px solid var(--qy-line);
  box-shadow: var(--qy-shadow-soft);
  backdrop-filter: blur(12px);
  border-radius: 1.25rem;
  padding: 1rem;
}

.stat-chip {
  background: #fff;
  border: 1px solid var(--qy-line);
  box-shadow: var(--qy-shadow-soft);
  border-radius: 1.25rem;
  padding: 1.05rem;
}

.stat-chip strong {
  font-size: 1.35rem;
}

.section {
  padding: 5.4rem 0;
}

.section-title {
  font-weight: 900;
  letter-spacing: -0.03rem;
  line-height: 1.18;
}

.section-desc {
  max-width: 820px;
  color: var(--qy-body);
  line-height: 1.85;
}

.card-qy {
  height: 100%;
  background: var(--qy-card);
  border: 1px solid var(--qy-line);
  border-radius: var(--qy-radius);
  box-shadow: var(--qy-shadow-soft);
  transition: all .22s ease;
}

.card-qy:hover {
  transform: translateY(-5px);
  box-shadow: var(--qy-shadow);
}

.card-qy .card-body {
  padding: 1.65rem;
}

.icon-square {
  width: 3.15rem;
  height: 3.15rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 1rem;
  color: var(--qy-primary-dark);
  background: var(--qy-soft-2);
  font-size: 1.35rem;
  margin-bottom: 1rem;
}

.device-card {
  overflow: hidden;
}

.device-img-wrap {
  min-height: 15.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.15rem;
  background:
    linear-gradient(180deg, #fbfdff, #effafa);
}

.device-img-wrap img {
  max-height: 14.5rem;
  width: auto;
  object-fit: contain;
  border-radius: .9rem;
}

.screen-card {
  overflow: hidden;
}

.screen-card img {
  width: 100%;
  object-fit: cover;
}

.list-check {
  list-style: none;
  padding: 0;
  margin: 0;
}

.list-check li {
  position: relative;
  padding: .42rem 0 .42rem 1.7rem;
  color: #40536b;
}

.list-check li::before {
  content: "\F26A";
  font-family: "bootstrap-icons";
  position: absolute;
  left: 0;
  top: .42rem;
  color: var(--qy-primary);
}

.price-card {
  position: relative;
  overflow: hidden;
}

.price-card.recommended {
  border-color: rgba(0, 191, 195, .45);
  box-shadow: 0 1.5rem 4rem rgba(0, 191, 195, .13);
}

.price-card.recommended::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: .35rem;
  background: linear-gradient(90deg, var(--qy-primary), var(--qy-blue));
}

.price {
  font-size: 2.25rem;
  font-weight: 900;
  color: var(--qy-primary-dark);
}

.price small {
  font-size: .95rem;
  color: var(--qy-muted);
  font-weight: 650;
}

.badge-qy {
  border-radius: 999px;
  background: linear-gradient(90deg, var(--qy-primary), var(--qy-blue));
  color: #fff;
  padding: .45rem .8rem;
  font-size: .8rem;
}

.step {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.step-num {
  flex: 0 0 auto;
  width: 2.65rem;
  height: 2.65rem;
  border-radius: .95rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 900;
  background: linear-gradient(135deg, var(--qy-primary), var(--qy-blue));
  box-shadow: 0 .8rem 1.65rem rgba(0, 191, 195, .2);
}

.page-hero {
  padding: 7.6rem 0 3.5rem;
  background:
    radial-gradient(circle at 88% 12%, rgba(0,191,195,.12), transparent 22rem),
    linear-gradient(180deg, #fbfdff 0%, #fff 100%);
}

.page-hero h1 {
  font-weight: 900;
  letter-spacing: -0.04rem;
}

.breadcrumb a {
  color: var(--qy-primary-dark);
  font-weight: 700;
}

.cta-box {
  border-radius: 2rem;
  padding: 3.2rem;
  color: #fff;
  background:
    radial-gradient(circle at 92% 15%, rgba(255,255,255,.16), transparent 14rem),
    linear-gradient(135deg, #00aeb3, #1677ff);
  box-shadow: 0 1.6rem 4rem rgba(0,191,195,.22);
}

.form-control,
.form-select {
  border: 1px solid #dfe9f3;
  border-radius: .95rem;
  min-height: 3rem;
  box-shadow: none !important;
}

.form-control:focus,
.form-select:focus {
  border-color: var(--qy-primary);
}

.footer {
  background: #0e1b2d;
  color: #aebdce;
  padding: 3.2rem 0;
}

.footer a {
  color: #eef7ff;
  text-decoration: none;
}

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

.float-actions {
  position: fixed;
  right: 1.25rem;
  bottom: 5.5rem;
  z-index: 1030;
  display: flex;
  flex-direction: column;
  gap: .65rem;
}

.float-actions a {
  width: 3.15rem;
  height: 3.15rem;
  border-radius: 1rem;
  background: #fff;
  color: var(--qy-primary-dark);
  border: 1px solid #d9eff1;
  box-shadow: var(--qy-shadow-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  transition: all .2s ease;
}

.float-actions a:hover {
  color: #fff;
  background: linear-gradient(135deg, var(--qy-primary), var(--qy-blue));
  transform: translateY(-2px);
}

.table thead th {
  background: #eafafa;
  color: #263c56;
}

@media (max-width: 991.98px) {
  .hero,
  .page-hero {
    padding-top: 6.6rem;
  }

  .navbar .nav-link {
    margin: .2rem 0;
  }

  .hero-floating {
    position: static;
    max-width: 100%;
    margin-top: 1rem;
  }
}

@media (max-width: 767.98px) {
  .section {
    padding: 3.8rem 0;
  }

  .hero h1,
  .page-hero h1 {
    font-size: 2.25rem;
  }

  .cta-box {
    padding: 2rem;
  }

  .float-actions {
    right: .85rem;
    bottom: 4.5rem;
  }

  .float-actions a {
    width: 2.8rem;
    height: 2.8rem;
  }
}