:root {
  --navy: #10243f;
  --ink: #1f2933;
  --muted: #657489;
  --line: #d9e2ec;
  --soft: #f4f8fb;
  --white: #ffffff;
  --cyan: #2aa7c9;
  --green: #2f9b78;
  --shadow: 0 18px 48px rgba(16, 36, 63, 0.12);
  --radius: 8px;
  font-family: Inter, "Segoe UI", Roboto, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  line-height: 1.6;
}

html {
  scroll-behavior: smooth;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.container {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 74px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0;
  color: var(--navy);
  font-size: 1.22rem;
}

.brand img {
  width: 168px;
  height: auto;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--navy), var(--cyan));
  color: var(--white);
  font-weight: 800;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 15px;
  font-size: 0.9rem;
  color: #34465d;
}

.nav-links a {
  padding: 8px 0;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--cyan);
}

.menu-button {
  display: none;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  color: var(--navy);
  font-size: 1.4rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 16px;
  border-radius: 8px;
  border: 1px solid transparent;
  font-weight: 700;
  cursor: pointer;
  transition: 0.18s ease;
}

.button.primary {
  background: var(--green);
  color: var(--white);
}

.button.secondary {
  background: var(--white);
  color: var(--navy);
  border-color: var(--line);
}

.button.dark {
  background: var(--navy);
  color: var(--white);
}

.button:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 22px rgba(16, 36, 63, 0.14);
}

.hero {
  background: linear-gradient(180deg, #f7fbfd 0%, #ffffff 100%);
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  align-items: center;
  gap: 46px;
  min-height: calc(100vh - 74px);
  padding: 60px 0;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--green);
  font-weight: 800;
  text-transform: uppercase;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--navy);
  line-height: 1.15;
  letter-spacing: 0;
}

h1 {
  font-size: clamp(2.35rem, 5vw, 4.4rem);
  max-width: 880px;
}

h2 {
  font-size: clamp(1.8rem, 3vw, 2.55rem);
}

h3 {
  font-size: 1.14rem;
}

.lead {
  color: #45566d;
  font-size: 1.1rem;
  max-width: 740px;
}

.hero-actions,
.section-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.hero-visual {
  position: relative;
  min-height: 430px;
  padding: 0;
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.hero-visual img {
  position: absolute;
  width: 64%;
  max-height: 280px;
  object-fit: contain;
  filter: drop-shadow(0 22px 28px rgba(16, 36, 63, 0.16));
  animation: floatProduct 6s ease-in-out infinite;
}

.hero-visual img:nth-child(1) {
  top: 6%;
  right: 0;
}

.hero-visual img:nth-child(2) {
  left: 0;
  bottom: 4%;
  width: 48%;
  animation-delay: -1.8s;
}

.hero-visual img:nth-child(3) {
  right: 10%;
  bottom: 0;
  width: 44%;
  animation-delay: -3.2s;
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 14% 8% 10% 7%;
  border: 1px solid rgba(42, 167, 201, 0.22);
  border-radius: 8px;
  background: linear-gradient(145deg, rgba(42, 167, 201, 0.08), rgba(47, 155, 120, 0.08));
}

@keyframes floatProduct {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

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

.quick-strip {
  background: var(--navy);
  color: var(--white);
}

.quick-strip .container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
}

.quick-item {
  padding: 22px 18px;
  background: rgba(255, 255, 255, 0.04);
}

.quick-item strong {
  display: block;
  color: var(--white);
}

.quick-item span {
  color: #cbd8e6;
  font-size: 0.94rem;
}

.section {
  padding: 76px 0;
}

.section.soft {
  background: var(--soft);
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 32px;
  margin-bottom: 30px;
}

.section-head p {
  max-width: 620px;
  margin: 10px 0 0;
  color: var(--muted);
}

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

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

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

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  min-height: 100%;
}

.card.featured {
  border-top: 4px solid var(--green);
  box-shadow: var(--shadow);
}

.card p {
  color: var(--muted);
  margin: 12px 0 0;
}

.product-card {
  overflow: hidden;
  padding: 0;
}

.product-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  padding: 18px;
  background: transparent;
  border-bottom: 1px solid var(--line);
}

.product-card div {
  padding: 22px;
}

.list {
  padding-left: 18px;
  margin: 16px 0 0;
  color: #41526a;
}

.list li {
  margin: 8px 0;
}

.page-hero {
  padding: 64px 0;
  background: linear-gradient(135deg, #10243f 0%, #173b60 62%, #276f7f 100%);
  color: var(--white);
}

.page-hero h1,
.page-hero .lead {
  color: var(--white);
}

.page-hero .lead {
  opacity: 0.88;
}

.brand-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}

.brand-card {
  padding: 22px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.brand-logo-strip {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}

.brand-logo {
  display: grid;
  place-items: center;
  min-height: 86px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  color: var(--navy);
  font-weight: 900;
  font-size: clamp(1.08rem, 2vw, 1.55rem);
  letter-spacing: 0.04em;
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.brand-logo:hover {
  transform: translateY(-3px);
  border-color: rgba(42, 167, 201, 0.45);
}

.brand-logo.aux {
  color: #0066b3;
}

.brand-logo.daikin {
  color: #00a8e0;
}

.brand-logo.lg {
  color: #a50034;
}

.brand-logo.inventor {
  color: #244a7f;
}

.brand-logo.gree {
  color: #0f7dbb;
}

.brand-name {
  font-weight: 900;
  color: var(--navy);
  font-size: 1.2rem;
}

.tier {
  display: inline-flex;
  margin-top: 10px;
  padding: 4px 8px;
  border-radius: 999px;
  color: var(--green);
  background: #e7f5ef;
  font-size: 0.76rem;
  font-weight: 800;
}

.notice {
  padding: 18px;
  border-left: 4px solid var(--cyan);
  background: #eef8fb;
  color: #36506b;
  border-radius: 0 8px 8px 0;
}

.form-panel {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 26px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.field.full {
  grid-column: 1 / -1;
}

label {
  display: block;
  margin-bottom: 6px;
  color: #314258;
  font-weight: 700;
  font-size: 0.9rem;
}

input,
select,
textarea {
  width: 100%;
  min-height: 44px;
  border: 1px solid #cbd6e2;
  border-radius: 8px;
  padding: 10px 12px;
  font: inherit;
  color: var(--ink);
  background: var(--white);
}

textarea {
  min-height: 126px;
  resize: vertical;
}

.checkbox {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  color: #405168;
  font-size: 0.92rem;
}

.checkbox input {
  width: 18px;
  min-height: 18px;
  margin-top: 4px;
}

.form-note {
  color: var(--muted);
  font-size: 0.88rem;
}

.form-note.success {
  color: var(--green);
  font-weight: 700;
}

.form-note.error {
  color: #b42318;
  font-weight: 700;
}

.button:disabled {
  cursor: wait;
  opacity: 0.72;
  transform: none;
}

.contact-band {
  background: var(--navy);
  color: var(--white);
  padding: 44px 0;
}

.contact-band h2,
.contact-band p {
  color: var(--white);
}

.contact-line {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 18px;
}

.choice-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 300px;
}

.contact-line a {
  color: var(--white);
  border-bottom: 1px solid rgba(255, 255, 255, 0.4);
}

.site-footer {
  background: #0c1c31;
  color: #d7e1ec;
  padding: 36px 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 28px;
}

.footer-grid a {
  display: block;
  color: #d7e1ec;
  margin: 6px 0;
}

.cookie {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 16px;
  z-index: 40;
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: min(760px, calc(100% - 32px));
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
}

.cookie.show {
  display: flex;
}

.cookie p {
  margin: 0;
  color: #41526a;
  font-size: 0.92rem;
}

@media (max-width: 920px) {
  .menu-button {
    display: inline-flex;
  }

  .nav-links {
    position: absolute;
    top: 74px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    padding: 18px 24px 24px;
    background: var(--white);
    border-bottom: 1px solid var(--line);
  }

  .nav-links.open {
    display: flex;
  }

  .hero-grid,
  .grid.two,
  .grid.three,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    min-height: auto;
    padding: 44px 0;
  }

  .hero-visual {
    min-height: 340px;
  }

  .quick-strip .container,
  .brand-grid,
  .brand-logo-strip {
    grid-template-columns: 1fr;
  }

  .section-head {
    display: block;
  }
}

@media (max-width: 620px) {
  .form-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 54px 0;
  }

  .brand img {
    width: 132px;
  }

  .hero-visual {
    min-height: 300px;
  }

  .hero-visual img:nth-child(1) {
    width: 72%;
  }

  .cookie {
    align-items: stretch;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .hero-visual img,
  .reveal {
    animation: none;
    transition: none;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}