:root {
  --primary: #ff5b7f;
  --secondary: #5b7fff;
  --accent: #14c6b7;
  --warning: #ffb84d;
  --dark: #1e2340;
  --text: #2f3555;
  --light: #f6f8ff;
  --white: #ffffff;
  --radius: 14px;
  --shadow: 0 12px 35px rgba(27, 45, 94, 0.12);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #f9fbff, #f2f6ff);
}

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

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

.container {
  width: min(1140px, 92%);
  margin: 0 auto;
}

.section {
  padding: 64px 0;
}

.section-title {
  margin: 0 0 14px;
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  color: var(--dark);
}

.section-subtitle {
  margin: 0 auto 24px;
  max-width: 760px;
  line-height: 1.7;
}

.top-bar {
  background: linear-gradient(120deg, var(--primary), #ff7f56);
  color: var(--white);
  font-size: 0.95rem;
  padding: 10px 0;
}

.top-bar p {
  margin: 0;
  text-align: center;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(6px);
  box-shadow: 0 1px 0 rgba(33, 42, 83, 0.1);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 78px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo img {
  width: 48px;
  height: 48px;
}

.logo span {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--dark);
  letter-spacing: 0.4px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-menu a {
  padding: 10px 14px;
  border-radius: 999px;
  font-weight: 600;
  transition: 0.25s ease;
}

.nav-menu a:hover,
.nav-menu a.active {
  background: #ebefff;
  color: var(--secondary);
}

.hero {
  padding: 70px 0 40px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 28px;
  align-items: center;
}

.hero h1 {
  color: var(--dark);
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.15;
  margin: 0 0 16px;
}

.hero p {
  margin: 0 0 18px;
  line-height: 1.8;
}

.hero-card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero-card img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}

.btn {
  display: inline-block;
  border: 0;
  border-radius: 10px;
  padding: 12px 20px;
  font-weight: 700;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(130deg, var(--secondary), #6f59ff);
  color: var(--white);
}

.btn-secondary {
  background: linear-gradient(130deg, var(--accent), #29d8b7);
  color: var(--white);
}

.btn-warning {
  background: linear-gradient(120deg, #ffbf4c, #ff9f3f);
  color: #3f2b00;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.badge {
  padding: 8px 13px;
  border-radius: 999px;
  font-size: 0.87rem;
  font-weight: 700;
}

.badge-primary {
  background: #ffe7ee;
  color: #c42e57;
}

.badge-secondary {
  background: #e9edff;
  color: #3653d8;
}

.badge-accent {
  background: #e0faf6;
  color: #0c8c80;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.feature-card,
.category-card,
.product-card,
.content-card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.feature-card {
  padding: 22px;
}

.feature-card h3 {
  margin: 0 0 10px;
  color: var(--dark);
}

.feature-card p {
  margin: 0;
  line-height: 1.7;
}

.category-card img,
.product-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.category-content,
.product-content {
  padding: 18px;
}

.category-content h3,
.product-content h3 {
  margin: 0 0 8px;
  color: var(--dark);
}

.product-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 14px 0;
}

.price {
  font-weight: 800;
  color: #20306f;
}

.rating {
  color: #d68d0d;
  font-weight: 700;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
}

.content-card {
  padding: 28px;
}

.content-card p,
.content-card li {
  line-height: 1.8;
}

.content-card ul {
  padding-left: 18px;
}

.large-image {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  width: 100%;
  min-height: 440px;
  object-fit: cover;
}

.page-banner {
  background: linear-gradient(120deg, #5d79ff, #14c6b7);
  color: var(--white);
  padding: 68px 0;
}

.page-banner h1 {
  margin: 0 0 8px;
  font-size: clamp(1.9rem, 5vw, 2.7rem);
}

.page-banner p {
  margin: 0;
  line-height: 1.7;
  max-width: 760px;
}

.form-card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 26px;
}

form {
  display: grid;
  gap: 14px;
}

label {
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 4px;
  display: inline-block;
}

input,
select,
textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid #d7defe;
  border-radius: 10px;
  font: inherit;
}

textarea {
  min-height: 140px;
  resize: vertical;
}

.field-error {
  font-size: 0.86rem;
  color: #cf2f59;
  display: none;
}

.field-error.show {
  display: block;
}

.form-success {
  margin-top: 12px;
  padding: 12px 14px;
  background: #dffaf0;
  border: 1px solid #a8ecd0;
  color: #076b49;
  border-radius: 10px;
  display: none;
}

.form-success.show {
  display: block;
}

.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.product-detail img {
  width: 100%;
  min-height: 420px;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.detail-panel {
  background: var(--white);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.detail-panel h2 {
  margin: 0 0 12px;
}

.spec-list {
  display: grid;
  gap: 10px;
}

.spec-list div {
  padding: 10px;
  border-radius: 10px;
  background: #f3f6ff;
}

.site-footer {
  background: #101732;
  color: #d8def8;
  padding: 48px 0 20px;
  margin-top: 34px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 22px;
}

.footer-grid h3 {
  margin: 0 0 10px;
  color: #ffffff;
}

.footer-links a {
  display: block;
  padding: 5px 0;
  color: #c7d2ff;
}

.copyright {
  border-top: 1px solid rgba(169, 183, 255, 0.2);
  margin-top: 22px;
  padding-top: 16px;
  font-size: 0.92rem;
}

.muted {
  color: #6470a0;
}

@media (max-width: 980px) {
  .hero-grid,
  .split,
  .product-detail {
    grid-template-columns: 1fr;
  }

  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 640px) {
  .header-inner {
    flex-direction: column;
    padding: 10px 0 16px;
  }

  .nav-menu {
    justify-content: center;
  }

  .grid-3 {
    grid-template-columns: 1fr;
  }

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