:root {
  --bg: #f3f8fd;
  --ink: #07234b;
  --muted: #53647f;
  --line: #d8e4f4;
  --blue: #0f4b87;
  --blue2: #19b3d7;
  --blue3: #2fb1ea;
  --card: #ffffff;
  --dark: #04142f;
  --shadow: 0 20px 45px rgba(8, 37, 72, 0.14);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Microsoft Yahei", Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: linear-gradient(180deg, #f8fcff 0%, #f1f6fe 45%, #e8f1fb 100%);
}

.container {
  width: min(1100px, 92vw);
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(10px);
  background: rgba(246, 250, 255, 0.84);
  border-bottom: 1px solid rgba(15, 75, 135, 0.16);
}

.bar-inner {
  min-height: 74px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  color: var(--dark);
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.brand img {
  width: 50px;
  height: 50px;
  object-fit: contain;
}

.brand span {
  font-size: 1.1rem;
}

.main-nav {
  margin-left: auto;
  display: flex;
  gap: 22px;
}

.main-nav a {
  color: var(--dark);
  text-decoration: none;
  font-weight: 600;
  padding: 10px 2px;
  border-bottom: 2px solid transparent;
}

.main-nav a:hover {
  border-bottom-color: var(--blue2);
}

.menu-btn {
  display: none;
  border: 0;
  background: transparent;
  width: 46px;
  height: 46px;
  cursor: pointer;
}

.menu-btn span {
  display: block;
  width: 21px;
  height: 2px;
  background: var(--dark);
  margin: 5px auto;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.cta-mini {
  margin-left: 14px;
  text-decoration: none;
  color: white;
  background: var(--blue);
  border-radius: 999px;
  padding: 12px 18px;
  font-size: 0.92rem;
  font-weight: 700;
}

section {
  padding: 72px 0;
}

.hero {
  padding-top: 84px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 34px;
  align-items: stretch;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 16px;
}

.kicker {
  margin: 0;
  font-weight: 700;
  color: var(--blue2);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 4.2vw, 3.8rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.hero-text {
  color: var(--muted);
  font-size: 1.03rem;
  max-width: 58ch;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 4px;
}

.btn {
  text-decoration: none;
  color: #fff;
  border-radius: 999px;
  padding: 13px 20px;
  font-weight: 700;
  border: 2px solid transparent;
  transition: transform 0.22s ease, box-shadow 0.22s ease;
  display: inline-block;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(15, 75, 135, 0.24);
}

.btn-primary {
  background: var(--blue);
}

.btn-outline {
  color: var(--blue);
  background: transparent;
  border-color: #6fd3ee;
}

.hero-points {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.hero-points li {
  color: var(--dark);
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 12px;
}

.hero-card {
  position: relative;
  padding: 18px;
  border-radius: 26px;
  overflow: hidden;
  min-height: 340px;
  background: linear-gradient(160deg, #102e63, #1a4f8f);
  box-shadow: var(--shadow);
}

.blob {
  position: absolute;
  inset: auto -30px -80px auto;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle at 25% 25%, rgba(94, 232, 255, 0.35), rgba(15, 75, 135, 0));
}

.hero-card-inner {
  position: relative;
  border: 1px solid rgba(240, 252, 255, 0.35);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.06);
  color: white;
  padding: 28px;
  min-height: 305px;
}

.hero-card-inner h2 {
  margin: 10px 0 16px;
  font-size: clamp(1.4rem, 2vw, 2rem);
}

.hero-card-inner ul {
  padding-left: 1.2rem;
  line-height: 1.8;
}

.badge {
  width: max-content;
  margin-top: 20px;
  border-radius: 999px;
  padding: 8px 14px;
  background: rgba(94, 232, 255, 0.26);
  color: #d8f8ff;
}

.section-kicker {
  margin: 0 0 8px;
  color: var(--blue2);
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h2 {
  margin: 0 0 20px;
  font-size: clamp(1.6rem, 2.6vw, 2.4rem);
  color: var(--ink);
}

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

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

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

.card,
.factory-grid > div,
.hero-card-inner,
.stat {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
}

.card {
  padding: 24px;
}

.product-card {
  padding: 16px;
  display: grid;
  gap: 10px;
}

.product-title-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.product-title-row h3 {
  margin: 0;
  flex: 1;
}

.price-badge {
  font-size: 0.78rem;
  line-height: 1.2;
  color: #0a355f;
  background: linear-gradient(135deg, #fce96a, #ffd54a);
  border: 1px solid #f4bf15;
  border-radius: 999px;
  padding: 5px 10px;
  white-space: nowrap;
  font-weight: 700;
}

.product-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  border-radius: 12px;
  border: 1px solid #d6e4f6;
  background: #ffffff;
  padding: 10px;
  box-sizing: border-box;
  display: block;
}

@media (max-width: 1200px) {
  .product-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  .product-grid {
    grid-template-columns: 1fr;
  }
}

  min-height: 200px;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 35px rgba(13, 36, 92, 0.16);
}

.card h3,
.factory-grid h3 {
  margin-top: 0;
}

.card p,
.card .meta {
  color: var(--muted);
  line-height: 1.65;
}

.meta {
  margin-bottom: 0;
}

.bg-accent {
  background: radial-gradient(115% 120% at 100% 0%, #e6f6ff 0%, #f2f8fe 38%, #f9fdff 100%);
}

.factory-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.factory-grid ul {
  line-height: 1.7;
  color: var(--muted);
}

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 18px;
  align-items: center;
}

.story-copy {
  margin: 0;
  max-width: 68ch;
  font-size: clamp(1rem, 1.5vw, 1.08rem);
  line-height: 1.82;
  color: #1b3560;
  letter-spacing: 0.01em;
}

.story-copy::first-letter {
  font-size: 1.45em;
  font-weight: 700;
  color: var(--blue);
}

.stats {
  display: grid;
  gap: 12px;
}

.stat {
  padding: 18px 20px;
  background: linear-gradient(160deg, #f8fcff, #ffffff);
}

.stat span {
  display: block;
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--blue);
}

.bg-soft {
  background: #f2f8ff;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.contact-form {
  display: grid;
  gap: 12px;
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
}

.contact-form label {
  display: grid;
  gap: 6px;
  color: #24426d;
  font-weight: 600;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  border: 1px solid #bdd0ec;
  border-radius: 12px;
  padding: 10px 12px;
  font: inherit;
}

.form-note {
  color: var(--muted);
  margin-top: 4px;
}

.wa-box {
  margin-top: 16px;
  border: 1px dashed #9fc2eb;
  border-radius: 14px;
  padding: 12px 14px;
  background: #f8fbff;
}

.wa-title {
  margin: 0 0 10px;
}

.wa-template {
  margin: 4px 6px 4px 0;
}

.footer {
  background: #091d3a;
  color: #d6e6ff;
  padding: 22px 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.95rem;
}

.footer-compliance {
  color: inherit;
  text-decoration: none;
}

.footer-compliance:hover,
.footer-compliance:focus-visible {
  color: #ffffff;
  text-decoration: underline;
}

/* reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(16px);
}

@media (max-width: 980px) {
  .hero-grid,
  .three,
  .factory-grid,
  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .main-nav,
  .cta-mini {
    display: none;
  }

  .menu-btn {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin-left: auto;
  }

  .main-nav.active {
    position: absolute;
    top: 70px;
    right: 4vw;
    left: 4vw;
    display: grid;
    background: #f8fcff;
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: 14px;
    box-shadow: var(--shadow);
  }

  .main-nav.active a {
    padding: 12px;
    border-bottom: 1px dashed #d8e4f5;
  }

  .hero {
    padding-top: 30px;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}