:root {
  --ink: #07172a;
  --ink-soft: #233044;
  --muted: #657287;
  --red: #b71f3f;
  --red-dark: #8d1731;
  --gold: #c79b53;
  --paper: #fbf8f2;
  --ivory: #fffdf8;
  --line: rgba(7, 23, 42, 0.12);
  --shadow: 0 24px 70px rgba(7, 23, 42, 0.14);
  --soft-shadow: 0 18px 48px rgba(7, 23, 42, 0.09);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--ivory);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
}

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

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

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  padding: 0 clamp(18px, 5vw, 72px);
  background: rgba(255, 253, 248, 0.92);
  border-bottom: 1px solid rgba(7, 23, 42, 0.08);
  backdrop-filter: blur(18px);
}

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

.brand img {
  width: 38px;
  height: 38px;
  border-radius: 6px;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 28px);
  color: var(--ink-soft);
  font-size: 15px;
}

.nav a {
  white-space: nowrap;
}

.nav a:hover {
  color: var(--red);
}

.nav-cta {
  padding: 9px 16px;
  color: #fff !important;
  background: linear-gradient(135deg, var(--red), var(--red-dark));
  border-radius: 999px;
  box-shadow: 0 10px 24px rgba(183, 31, 63, 0.22);
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  font-size: 22px;
}

.hero {
  position: relative;
  min-height: 92vh;
  display: grid;
  align-items: center;
  padding: 118px clamp(20px, 6vw, 84px) 126px;
  overflow: hidden;
  background: var(--ink);
}

.hero-bg,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(7, 23, 42, 0.9) 0%, rgba(7, 23, 42, 0.74) 42%, rgba(7, 23, 42, 0.16) 100%),
    linear-gradient(0deg, rgba(7, 23, 42, 0.28), rgba(7, 23, 42, 0.02));
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
  color: #fff;
}

.hero-brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 30px;
  padding: 10px 16px 10px 10px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.94);
  border-radius: 8px;
  font-weight: 900;
  letter-spacing: 0.08em;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.16);
}

.hero-brand img {
  width: 44px;
  height: 44px;
  border-radius: 6px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

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

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(42px, 6vw, 78px);
  line-height: 1.04;
  letter-spacing: 0;
}

h1 span {
  display: block;
}

.hero-copy {
  max-width: 720px;
  margin-bottom: 34px;
  color: rgba(255, 255, 255, 0.84);
  font-size: 18px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 22px;
  border-radius: 8px;
  font-weight: 700;
}

.btn.primary {
  color: #fff;
  background: linear-gradient(135deg, var(--red), var(--red-dark));
  box-shadow: 0 16px 34px rgba(183, 31, 63, 0.28);
}

.btn.ghost {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.56);
}

.hero-metrics {
  position: absolute;
  right: clamp(18px, 5vw, 72px);
  bottom: 34px;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, minmax(120px, 1fr));
  gap: 1px;
  width: min(680px, calc(100% - 40px));
  overflow: hidden;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.2);
  box-shadow: var(--shadow);
}

.hero-metrics div {
  padding: 20px 22px;
  background: rgba(255, 253, 248, 0.94);
}

.hero-metrics strong {
  display: block;
  margin-bottom: 3px;
  color: var(--red);
  font-size: 22px;
}

.hero-metrics span {
  color: var(--ink-soft);
  font-size: 14px;
}

.section {
  padding: clamp(70px, 9vw, 118px) clamp(20px, 6vw, 84px);
}

.section-head {
  max-width: 780px;
  margin-bottom: 34px;
}

.section h2 {
  margin-bottom: 0;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.14;
  letter-spacing: 0;
}

.intro {
  background: var(--ivory);
}

.intro-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 420px);
  gap: clamp(28px, 5vw, 72px);
  align-items: start;
}

.intro-copy {
  color: var(--ink-soft);
  font-size: 18px;
}

.intro-copy p:last-child {
  margin-bottom: 0;
}

.identity-panel {
  padding: 28px;
  border: 1px solid rgba(7, 23, 42, 0.1);
  border-radius: 8px;
  background:
    linear-gradient(145deg, rgba(199, 155, 83, 0.12), rgba(255, 255, 255, 0.55)),
    #fff;
  box-shadow: var(--soft-shadow);
}

.identity-panel img {
  width: 100%;
  margin-bottom: 24px;
  padding: 18px;
  border-radius: 8px;
  background: #fff;
}

.identity-panel dl,
.identity-panel dd {
  margin: 0;
}

.identity-panel div {
  display: grid;
  gap: 5px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.identity-panel dt {
  color: var(--red);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.identity-panel dd {
  color: var(--ink);
  font-weight: 700;
}

.strength {
  background: var(--paper);
}

.strength-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.strength-grid article {
  min-height: 270px;
  padding: 30px;
  background: #fff;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.strength-grid article:hover {
  position: relative;
  transform: translateY(-4px);
  box-shadow: var(--soft-shadow);
}

.strength-grid span {
  display: block;
  margin-bottom: 46px;
  color: var(--red);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.14em;
}

.strength-grid h3,
.service-list h3 {
  margin-bottom: 12px;
  font-size: 22px;
}

.strength-grid p,
.service-list p,
.brand-copy p,
.contact-panel p,
.evidence-copy p,
.product-list p,
.innovation-grid p,
.source-note {
  color: var(--ink-soft);
}

.services {
  background:
    radial-gradient(circle at 12% 0%, rgba(183, 31, 63, 0.06), transparent 32%),
    #fff;
}

.service-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.service-list article {
  min-height: 210px;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(199, 155, 83, 0.1), transparent 42%),
    #fff;
}

.service-list small {
  display: inline-block;
  margin-bottom: 26px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.evidence {
  display: grid;
  grid-template-columns: minmax(280px, 0.72fr) minmax(420px, 1.28fr);
  gap: clamp(30px, 6vw, 86px);
  align-items: center;
  background:
    linear-gradient(135deg, rgba(7, 23, 42, 0.04), transparent 38%),
    var(--ivory);
}

.evidence-copy {
  max-width: 560px;
}

.evidence-copy p:not(.eyebrow) {
  font-size: 17px;
}

.evidence-gallery {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 16px;
}

.evidence-gallery figure {
  margin: 0;
  overflow: hidden;
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--soft-shadow);
}

.evidence-gallery figure:first-child {
  grid-row: span 2;
}

.evidence-gallery img {
  width: 100%;
  height: 100%;
  min-height: 230px;
  object-fit: cover;
}

.evidence-gallery figcaption {
  padding: 12px 16px 16px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 800;
}

.capacity-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.capacity-grid article {
  min-height: 230px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 12px 36px rgba(7, 23, 42, 0.05);
}

.capacity-grid strong {
  display: block;
  margin-bottom: 8px;
  color: var(--red);
  font-size: clamp(34px, 4vw, 54px);
  line-height: 1;
}

.capacity-grid span {
  display: block;
  margin-bottom: 20px;
  color: var(--ink);
  font-weight: 900;
}

.capacity-grid p {
  margin-bottom: 0;
  color: var(--ink-soft);
}

.product-section {
  background: var(--paper);
}

.product-layout {
  display: grid;
  grid-template-columns: minmax(320px, 0.92fr) minmax(320px, 1.08fr);
  gap: clamp(28px, 5vw, 68px);
  align-items: center;
}

.product-image {
  overflow: hidden;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.product-image img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.product-list {
  display: grid;
  gap: 16px;
}

.product-list article {
  padding: 26px;
  border: 1px solid rgba(7, 23, 42, 0.1);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
}

.product-list h3 {
  margin-bottom: 10px;
  font-size: 23px;
}

.product-list p {
  margin-bottom: 0;
}

.archive-section {
  background:
    linear-gradient(180deg, #fff 0%, var(--paper) 100%);
}

.archive-intro {
  display: grid;
  grid-template-columns: minmax(360px, 1.25fr) minmax(280px, 0.75fr);
  gap: clamp(26px, 5vw, 60px);
  align-items: end;
  margin-bottom: 42px;
}

.archive-intro figure,
.mosaic-grid figure {
  margin: 0;
}

.archive-intro figure {
  overflow: hidden;
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.archive-intro img {
  width: 100%;
  aspect-ratio: 16 / 5;
  object-fit: cover;
}

.archive-intro figcaption {
  padding: 16px 20px;
  color: var(--ink-soft);
  font-weight: 800;
}

.archive-intro h3 {
  margin-bottom: 12px;
  font-size: clamp(24px, 3vw, 38px);
  line-height: 1.16;
}

.archive-intro p {
  color: var(--ink-soft);
}

.archive-band {
  margin-top: 26px;
  padding: clamp(22px, 4vw, 38px);
  border: 1px solid rgba(7, 23, 42, 0.1);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.76);
  box-shadow: 0 16px 44px rgba(7, 23, 42, 0.06);
}

.archive-band-head {
  display: grid;
  grid-template-columns: 64px minmax(0, 0.6fr) minmax(260px, 1fr);
  gap: 22px;
  align-items: start;
  margin-bottom: 24px;
}

.archive-band-head span {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 999px;
  color: #fff;
  background: var(--ink);
  font-weight: 900;
}

.archive-band-head h3 {
  margin: 0;
  font-size: clamp(24px, 3vw, 36px);
  line-height: 1.15;
}

.archive-band-head p {
  margin: 0;
  color: var(--ink-soft);
}

.mosaic-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  grid-auto-flow: dense;
  gap: 14px;
}

.mosaic-grid figure {
  position: relative;
  min-height: 230px;
  overflow: hidden;
  border-radius: 8px;
  background: var(--ink);
  box-shadow: 0 12px 32px rgba(7, 23, 42, 0.12);
}

.mosaic-grid figure.wide {
  grid-column: span 2;
}

.mosaic-grid figure.tall {
  grid-row: span 2;
  min-height: 474px;
}

.mosaic-grid img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}

.mosaic-grid figure:hover img {
  transform: scale(1.035);
}

.mosaic-grid figcaption {
  position: absolute;
  right: 12px;
  bottom: 12px;
  left: 12px;
  padding: 10px 12px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 6px;
  color: #fff;
  background: rgba(7, 23, 42, 0.68);
  backdrop-filter: blur(12px);
  font-size: 14px;
  font-weight: 800;
}

.product-mosaic figure:nth-child(6),
.product-mosaic figure:nth-child(8) {
  min-height: 474px;
}

.innovation {
  background:
    radial-gradient(circle at 90% 15%, rgba(199, 155, 83, 0.14), transparent 30%),
    #fff;
}

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

.innovation-grid article {
  padding: 30px;
  border-radius: 8px;
  background: var(--ink);
  color: #fff;
  box-shadow: var(--soft-shadow);
}

.innovation-grid h3 {
  color: #fff;
  font-size: 24px;
}

.innovation-grid p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.76);
}

.sources {
  background: var(--ivory);
}

.source-list {
  display: grid;
  gap: 12px;
  max-width: 960px;
}

.source-list a {
  display: flex;
  align-items: center;
  min-height: 58px;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  font-weight: 800;
}

.source-list a:hover {
  border-color: rgba(183, 31, 63, 0.35);
  color: var(--red);
}

.source-note {
  max-width: 960px;
  margin: 20px 0 0;
  font-size: 14px;
}

.showcase {
  display: grid;
  grid-template-columns: minmax(280px, 0.78fr) minmax(360px, 1.22fr);
  gap: clamp(30px, 6vw, 86px);
  align-items: center;
  background: var(--paper);
}

.showcase-copy {
  max-width: 560px;
}

.showcase-copy p:not(.eyebrow) {
  color: var(--ink-soft);
  font-size: 17px;
}

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

.showcase-cards figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(7, 23, 42, 0.1);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--soft-shadow);
}

.showcase-cards img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  padding: 28px;
}

.showcase-cards figcaption {
  padding: 14px 18px 18px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-weight: 800;
}

.brand-section {
  display: grid;
  grid-template-columns: minmax(280px, 0.8fr) minmax(360px, 1.2fr);
  gap: clamp(30px, 6vw, 86px);
  align-items: center;
  background:
    linear-gradient(135deg, rgba(183, 31, 63, 0.22), transparent 36%),
    var(--ink);
  color: #fff;
}

.brand-copy p:not(.eyebrow) {
  color: rgba(255, 255, 255, 0.78);
  font-size: 17px;
}

.brand-board {
  display: grid;
  gap: 18px;
}

.brand-board img {
  width: 100%;
  padding: clamp(18px, 4vw, 38px);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.24);
}

.contact {
  background:
    linear-gradient(135deg, rgba(183, 31, 63, 0.08), rgba(199, 155, 83, 0.14)),
    var(--paper);
}

.contact-panel {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) 260px;
  gap: 42px;
  align-items: center;
  max-width: 1120px;
  margin: 0 auto;
  padding: clamp(28px, 5vw, 56px);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.84);
  box-shadow: var(--shadow);
}

.contact-items {
  display: grid;
  gap: 10px;
  margin-top: 26px;
}

.contact-items p {
  margin: 0;
}

.contact-items span {
  display: inline-block;
  min-width: 86px;
  color: var(--red);
  font-weight: 800;
}

.qr-card {
  margin: 0;
  padding: 18px;
  border-radius: 8px;
  background: #fff;
  text-align: center;
}

.qr-card img {
  width: 100%;
  border-radius: 6px;
}

.qr-card figcaption {
  margin-top: 12px;
  color: var(--ink-soft);
  font-weight: 700;
}

.site-footer {
  padding: 26px clamp(20px, 6vw, 84px);
  color: rgba(255, 255, 255, 0.72);
  background: #06101e;
  text-align: center;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 980px) {
  .menu-toggle {
    display: inline-grid;
    place-items: center;
  }

  .nav {
    position: absolute;
    top: 72px;
    right: 18px;
    left: 18px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fff;
    box-shadow: var(--shadow);
  }

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

  .nav a {
    padding: 12px;
  }

  .nav-cta {
    text-align: center;
  }

  .hero {
    min-height: 860px;
    padding-top: 110px;
  }

  .hero-metrics,
  .intro-layout,
  .evidence,
  .archive-intro,
  .product-layout,
  .showcase,
  .brand-section,
  .contact-panel {
    grid-template-columns: 1fr;
  }

  .strength-grid,
  .service-list,
  .capacity-grid,
  .innovation-grid,
  .showcase-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .evidence-gallery {
    grid-template-columns: 1fr 1fr;
  }

  .archive-band-head {
    grid-template-columns: 54px 1fr;
  }

  .archive-band-head p {
    grid-column: 2;
  }

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

  .contact-panel {
    justify-items: start;
  }

  .qr-card {
    width: min(260px, 100%);
  }
}

@media (max-width: 640px) {
  .site-header {
    height: 64px;
    padding: 0 16px;
  }

  .brand span {
    font-size: 15px;
    max-width: 230px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .nav {
    top: 64px;
  }

  .hero {
    min-height: 940px;
    padding: 96px 18px 360px;
  }

  .hero-overlay {
    background: linear-gradient(180deg, rgba(7, 23, 42, 0.9) 0%, rgba(7, 23, 42, 0.72) 56%, rgba(7, 23, 42, 0.22) 100%);
  }

  .hero-brand {
    margin-bottom: 24px;
  }

  h1 {
    font-size: 34px;
  }

  .hero-copy {
    font-size: 16px;
  }

  .hero-actions,
  .hero-actions .btn {
    width: 100%;
  }

  .hero-metrics {
    right: 18px;
    bottom: 24px;
    grid-template-columns: 1fr;
  }

  .section {
    padding: 64px 18px;
  }

  .strength-grid,
  .service-list,
  .capacity-grid,
  .innovation-grid,
  .evidence-gallery,
  .mosaic-grid,
  .showcase-cards {
    grid-template-columns: 1fr;
  }

  .evidence-gallery figure:first-child {
    grid-row: auto;
  }

  .evidence-gallery img,
  .product-image img {
    min-height: 0;
    aspect-ratio: 16 / 10;
  }

  .archive-intro img {
    aspect-ratio: 16 / 8;
  }

  .archive-band {
    padding: 18px;
  }

  .archive-band-head {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .archive-band-head p {
    grid-column: auto;
  }

  .mosaic-grid figure,
  .mosaic-grid figure.tall,
  .product-mosaic figure:nth-child(6),
  .product-mosaic figure:nth-child(8) {
    grid-column: auto;
    grid-row: auto;
    min-height: 240px;
  }

  .mosaic-grid figure.wide {
    grid-column: auto;
  }

  .strength-grid article,
  .service-list article {
    min-height: auto;
    padding: 24px;
  }

  .identity-panel,
  .contact-panel {
    padding: 22px;
  }

  .showcase-cards img {
    aspect-ratio: 16 / 10;
  }

  .strength-grid span {
    margin-bottom: 24px;
  }
}