:root {
  --ink: #10202f;
  --muted: #5d6d7b;
  --soft: #edf3f8;
  --panel: #f7fafc;
  --line: #dbe6ee;
  --blue: #123d5d;
  --blue-2: #0b5f83;
  --cyan: #13a9c8;
  --white: #ffffff;
  --shadow: 0 18px 48px rgba(20, 46, 68, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: Inter, Arial, Helvetica, sans-serif;
  line-height: 1.55;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1180px;
  margin: 0 auto;
  padding: 16px 24px;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: 0.03em;
}

.brand-mark {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border: 1px solid var(--blue);
  border-radius: 8px;
  color: var(--blue);
  font-weight: 800;
}

.brand small {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  color: #1e3040;
  font-size: 14px;
  font-weight: 700;
}

.nav-links a {
  padding: 8px 2px;
}

.nav-links .button-link {
  padding: 9px 14px;
  color: var(--blue);
  border: 1px solid var(--blue);
  border-radius: 7px;
}

.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: 7px;
  padding: 8px 10px;
  color: var(--blue);
  font-weight: 800;
}

.section,
.hero {
  padding: 76px 24px;
}

.hero {
  overflow: hidden;
  background:
    linear-gradient(115deg, rgba(237, 243, 248, 0.95) 0%, rgba(255, 255, 255, 0.86) 54%, rgba(227, 238, 246, 0.9) 100%);
}

.hero-grid,
.section-inner {
  max-width: 1180px;
  margin: 0 auto;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.96fr) minmax(360px, 1.04fr);
  align-items: center;
  gap: 50px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 22px;
  color: #0e1d2b;
  font-size: clamp(38px, 5vw, 62px);
  line-height: 1.06;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(28px, 3vw, 42px);
  line-height: 1.16;
  letter-spacing: 0;
}

.product-layout h2 {
  font-size: clamp(28px, 3vw, 44px);
}

h3 {
  margin-bottom: 10px;
  font-size: 21px;
  line-height: 1.25;
}

.lead {
  max-width: 690px;
  color: #3f5060;
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 18px;
  border: 1px solid var(--blue);
  border-radius: 7px;
  color: var(--blue);
  font-weight: 800;
}

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

.hero-visual {
  position: relative;
  min-height: 390px;
}

.office-scene {
  position: relative;
  min-height: 390px;
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(255,255,255,0.72), rgba(255,255,255,0.16)),
    url("assets/images/brand/hero-office.jpg") center / cover no-repeat;
  box-shadow: var(--shadow);
}

.office-scene::after {
  content: "";
  position: absolute;
  inset: auto 26px 24px 26px;
  height: 82px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(219, 230, 238, 0.8);
  backdrop-filter: blur(10px);
  display: none;
}

.scene-note {
  position: absolute;
  right: 44px;
  bottom: 48px;
  z-index: 1;
  max-width: 260px;
  color: #203243;
  font-size: 14px;
  font-weight: 700;
  display: none;
}

.stats-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  max-width: 1180px;
  margin: 82px auto 0;
  border: 1px solid var(--line);
  background: var(--white);
  box-shadow: var(--shadow);
}

.stat {
  padding: 24px 26px;
  border-right: 1px solid var(--line);
}

.stat:last-child {
  border-right: 0;
}

.stat strong {
  display: block;
  margin-bottom: 5px;
  color: var(--blue);
  font-size: 18px;
}

.stat span {
  color: var(--muted);
  font-size: 14px;
}

.section.alt {
  background: var(--panel);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1.1fr);
  align-items: center;
  gap: 46px;
}

.visual-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.visual-card img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.grid {
  display: grid;
  gap: 20px;
}

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

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

.grid.cols-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--white);
  overflow: hidden;
}

.card-body {
  padding: 22px;
}

.card p,
.support-card p,
.form-panel p {
  color: var(--muted);
}

.product-card img {
  width: 100%;
  aspect-ratio: 1.24 / 1;
  object-fit: contain;
  padding: 20px;
  background: #fff;
}

.series-tag {
  display: inline-flex;
  margin-bottom: 12px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.scenario-card img {
  width: 100%;
  aspect-ratio: 16 / 11;
  object-fit: cover;
}

.support-band {
  border: 1px solid #bfd7e6;
  border-radius: 14px;
  background: linear-gradient(135deg, #f5fbfe, #eef6fb);
  padding: 30px;
}

.gift-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  align-items: center;
  gap: 34px;
  border: 1px solid #c9e0eb;
  border-radius: 16px;
  background: #f4fafc;
  padding: 34px;
}

.gift-visual {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
}

.gift-visual img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.page-hero {
  padding: 68px 24px;
  background: linear-gradient(135deg, #f4f8fb, #ffffff);
  border-bottom: 1px solid var(--line);
}

.page-hero .section-inner {
  max-width: 1000px;
}

.product-layout {
  display: grid;
  grid-template-columns: minmax(340px, 0.95fr) minmax(0, 1.05fr);
  gap: 42px;
  align-items: start;
}

.gallery-main {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
  overflow: hidden;
}

.gallery-main img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: contain;
}

.thumbs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-top: 12px;
}

.thumbs button {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  cursor: pointer;
  overflow: hidden;
  padding: 0;
}

.thumbs button.active {
  border-color: var(--cyan);
  box-shadow: 0 0 0 2px rgba(19, 169, 200, 0.18);
}

.thumbs img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: contain;
}

.size-select {
  width: 100%;
  max-width: 330px;
  height: 44px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--white);
  color: var(--ink);
  font-weight: 700;
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 16px 0 22px;
}

.pill {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 12px;
  background: var(--panel);
  color: #244258;
  font-size: 14px;
  font-weight: 800;
}

.bullets {
  padding-left: 20px;
  color: #304253;
}

.bullets li {
  margin: 10px 0;
}

.description-images {
  display: grid;
  gap: 18px;
  margin-top: 26px;
}

.description-images img {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--white);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.form-grid label {
  display: grid;
  gap: 7px;
  color: #273b4d;
  font-size: 14px;
  font-weight: 800;
}

.form-grid input,
.form-grid textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 11px 12px;
  color: var(--ink);
  font: inherit;
}

.form-grid textarea,
.form-grid .full {
  grid-column: 1 / -1;
}

.site-footer {
  padding: 38px 24px;
  color: #d8e7f0;
  background: #123046;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 22px;
  max-width: 1180px;
  margin: 0 auto;
}

.footer-inner a {
  color: #ffffff;
  font-weight: 800;
}

@media (max-width: 900px) {
  .menu-toggle {
    display: inline-flex;
  }

  .nav {
    align-items: flex-start;
  }

  .nav-links {
    display: none;
    position: absolute;
    left: 24px;
    right: 24px;
    top: 72px;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--white);
    box-shadow: var(--shadow);
  }

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

  .hero-grid,
  .split,
  .product-layout,
  .gift-band {
    grid-template-columns: 1fr;
  }

  .grid.cols-3,
  .grid.cols-2,
  .grid.cols-4,
  .stats-strip {
    grid-template-columns: 1fr;
  }

  .stat {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .stat:last-child {
    border-bottom: 0;
  }

  .section,
  .hero {
    padding: 54px 20px;
  }

  .office-scene,
  .hero-visual {
    min-height: 310px;
  }

  .footer-inner {
    flex-direction: column;
  }
}

@media (max-width: 560px) {
  h1 {
    font-size: 36px;
  }

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

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