:root {
  color-scheme: dark;
  --bg: #05080d;
  --bg-2: #08111e;
  --panel: rgba(12, 20, 32, 0.76);
  --panel-2: rgba(18, 28, 43, 0.92);
  --gold: #c8a45d;
  --gold-2: #f1d38a;
  --blue: #1e66d0;
  --cyan: #54c8ff;
  --silver: #d7dde7;
  --text: #f4f7fb;
  --muted: #aab4c2;
  --line: rgba(215, 221, 231, 0.16);
  --line-gold: rgba(200, 164, 93, 0.38);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    linear-gradient(90deg, rgba(200, 164, 93, 0.05) 1px, transparent 1px),
    radial-gradient(circle at 76% 10%, rgba(30, 102, 208, 0.18), transparent 34rem),
    linear-gradient(180deg, #05080d 0%, #091525 48%, #05080d 100%);
  background-size: 72px 72px, auto, auto;
  color: var(--text);
}

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

p {
  color: var(--muted);
  line-height: 1.9;
}

.site-header {
  position: fixed;
  z-index: 40;
  inset: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: 18px clamp(18px, 4vw, 58px);
  background: rgba(5, 8, 13, 0.82);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 238px;
}

.brand-logo {
  width: 48px;
  height: 48px;
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--line-gold);
  border-radius: 50%;
  background: #f6f7f9;
  box-shadow: 0 0 22px rgba(200, 164, 93, 0.18);
}

.brand-logo img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  color: var(--silver);
  font-size: 15px;
  letter-spacing: 0.04em;
}

.brand small {
  margin-top: 2px;
  color: var(--gold-2);
  font-size: 12px;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 6px 18px;
  font-size: 12px;
  color: #cbd3de;
}

.site-nav a {
  position: relative;
  padding: 8px 0;
}

.site-nav a::after {
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 0;
  height: 1px;
  content: "";
  background: var(--gold-2);
  transition: width 0.2s ease;
}

.site-nav a:hover::after,
.site-nav a.active::after {
  width: 100%;
}

.menu-toggle {
  display: none;
  border: 1px solid var(--line-gold);
  background: rgba(200, 164, 93, 0.08);
  color: var(--gold-2);
  min-height: 40px;
  padding: 0 14px;
}

.hero {
  position: relative;
  min-height: auto;
  display: block;
  padding: 102px clamp(20px, 5vw, 84px) 0;
  overflow: visible;
}

.hero-visual {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(5, 8, 13, 0.1), rgba(5, 8, 13, 0.88)),
    radial-gradient(circle at 82% 36%, rgba(84, 200, 255, 0.24), transparent 24rem),
    linear-gradient(135deg, #111927 0%, #07111e 55%, #142130 100%);
  background-position: center;
  background-size: cover;
  transform: scale(1.02);
}

.hero-promo {
  position: relative;
  z-index: 1;
  inset: auto;
  display: block;
  padding: 0;
  background: #020710;
}

.hero-promo img {
  width: 100%;
  height: auto;
  display: block;
}

.hero-map {
  position: absolute;
  display: none;
  right: 2vw;
  top: 20vh;
  width: min(620px, 48vw);
  aspect-ratio: 1.8;
  border: 1px solid rgba(84, 200, 255, 0.16);
  background:
    linear-gradient(90deg, transparent 48%, rgba(84, 200, 255, 0.45) 49%, transparent 50%),
    linear-gradient(rgba(84, 200, 255, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(84, 200, 255, 0.1) 1px, transparent 1px);
  background-size: auto, 34px 34px, 34px 34px;
  opacity: 0.36;
  clip-path: polygon(9% 0, 100% 0, 91% 100%, 0 100%);
}

.hero-content {
  display: none;
}

.label {
  margin: 0 0 16px;
  color: var(--gold-2);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero h1,
.page-hero h1,
.section h2 {
  margin: 0;
  color: var(--text);
  line-height: 1.15;
}

.hero h1 {
  font-size: clamp(44px, 7vw, 104px);
  font-weight: 900;
  letter-spacing: 0;
}

.hero-content > p:not(.label) {
  max-width: 720px;
  margin: 28px 0 0;
  color: #d7dde7;
  font-size: clamp(17px, 1.45vw, 22px);
}

.hero-overview {
  max-width: 760px;
  padding: 16px 18px;
  border-left: 3px solid var(--gold-2);
  background: rgba(8, 17, 30, 0.5);
  box-shadow: inset 0 0 0 1px rgba(241, 211, 138, 0.14);
}

.hero-actions,
.cta-actions,
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.btn {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 24px;
  border: 1px solid var(--line-gold);
  background: rgba(215, 221, 231, 0.04);
  color: var(--silver);
  font-weight: 700;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
  border-color: var(--gold-2);
  background: rgba(200, 164, 93, 0.1);
}

.btn.primary {
  background: linear-gradient(135deg, #d5b36a, #7d612a);
  color: #09101b;
}

.btn.ghost {
  border-color: rgba(84, 200, 255, 0.34);
}

.btn.compact {
  min-height: 44px;
  margin-top: 18px;
}

.hero-panel {
  display: none;
  position: absolute;
  right: clamp(20px, 5vw, 84px);
  bottom: 72px;
  width: min(370px, 34vw);
  display: grid;
  gap: 12px;
  padding: 22px;
  border: 1px solid var(--line-gold);
  background: rgba(8, 17, 30, 0.72);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.hero-panel span {
  color: var(--muted);
  font-size: 12px;
}

.hero-panel strong {
  padding-top: 10px;
  border-top: 1px solid var(--line);
  color: var(--silver);
}

.section {
  padding: 92px clamp(20px, 5vw, 84px);
}

.section-title {
  max-width: 820px;
}

.section-title.wide {
  max-width: 980px;
  margin-bottom: 34px;
}

.section h2,
.page-hero h1 {
  font-size: clamp(32px, 4.8vw, 60px);
}

.intro {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: 54px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(215, 221, 231, 0.025);
}

.intro-copy {
  max-width: 860px;
}

.text-link {
  display: inline-flex;
  margin-top: 12px;
  color: var(--gold-2);
  font-weight: 700;
}

.text-link::after {
  content: "鈫?;
  margin-left: 8px;
}

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

.feature-card,
.content-card,
.info-panel,
.contact-card {
  border: 1px solid var(--line);
  background: linear-gradient(145deg, rgba(18, 28, 43, 0.92), rgba(8, 17, 30, 0.78));
  box-shadow: var(--shadow);
}

.feature-card,
.content-card {
  min-height: 340px;
  padding: 28px;
}

.feature-card h3,
.content-card h3 {
  margin: 42px 0 10px;
  color: var(--text);
  font-size: 25px;
}

.number,
.en {
  color: var(--gold-2);
}

.number {
  font-family: Georgia, serif;
  font-size: 28px;
}

.en {
  margin: 0 0 16px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.tech-band,
.vision-strip,
.contact-cta {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(90deg, rgba(200, 164, 93, 0.08), transparent 32%),
    linear-gradient(135deg, rgba(12, 20, 32, 0.96), rgba(8, 17, 30, 0.86));
}

.tech-band {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 42px;
  align-items: center;
}

.chip-grid,
.keyword-row,
.list-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.chip-grid span,
.keyword-row span,
.keyword-row a,
.list-grid span,
.list-grid a {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  padding: 0 16px;
  border: 1px solid var(--line-gold);
  background: rgba(200, 164, 93, 0.07);
  color: var(--silver);
}

.split {
  display: grid;
  grid-template-columns: minmax(280px, 0.92fr) minmax(280px, 1.08fr);
  gap: 48px;
  align-items: center;
}

.image-block {
  min-height: 410px;
  border: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(5, 8, 13, 0.15), rgba(5, 8, 13, 0.72)),
    url("assets/hero.png"),
    linear-gradient(135deg, rgba(30, 102, 208, 0.35), rgba(200, 164, 93, 0.18));
  background-position: center;
  background-size: cover;
}

.africa-image {
  clip-path: polygon(0 0, 94% 0, 100% 100%, 6% 100%);
}

.vision-strip {
  text-align: center;
}

.keyword-row {
  justify-content: center;
  margin-top: 28px;
}

.message-section blockquote {
  max-width: 960px;
  margin: 28px 0;
  padding-left: 26px;
  border-left: 3px solid var(--gold-2);
  color: var(--silver);
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.65;
}

.signature {
  color: var(--gold-2);
}

.contact-cta {
  display: flex;
  justify-content: space-between;
  gap: 30px;
  align-items: center;
}

.page-hero {
  padding: 148px clamp(20px, 5vw, 84px) 70px;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(90deg, rgba(200, 164, 93, 0.08), transparent 32%),
    radial-gradient(circle at 82% 20%, rgba(84, 200, 255, 0.14), transparent 28rem),
    linear-gradient(135deg, #101a28, #07111e);
  background-position: center;
  background-size: auto;
}

.page-hero p:not(.label) {
  max-width: 850px;
  font-size: 18px;
}

.info-panel {
  padding: 34px;
}

.info-panel h2 {
  font-size: clamp(28px, 4vw, 48px);
}

.content-list {
  display: grid;
  gap: 12px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.content-list li {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}

.content-list li::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 10px;
  background: var(--gold-2);
}

.two-col {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.about-top-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.about-bottom-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 22px;
  padding-top: 0;
}

.about-top-grid .info-panel {
  min-height: 360px;
}

.about-top-grid h3,
.about-bottom-grid .content-card h3 {
  margin: 0 0 18px;
  color: var(--text);
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.15;
}

.president-message {
  min-height: 340px;
}

.president-message blockquote {
  margin: 18px 0;
  padding-left: 18px;
  border-left: 3px solid var(--gold-2);
  color: var(--silver);
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.7;
}

.company-table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--line);
  background: rgba(12, 20, 32, 0.74);
}

.company-table th,
.company-table td {
  padding: 18px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.company-table th {
  width: 26%;
  color: var(--gold-2);
  font-weight: 700;
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.86fr 1.14fr;
  gap: 28px;
}

.contact-card {
  padding: 30px;
}

.contact-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  padding: 34px clamp(20px, 5vw, 84px);
  border-top: 1px solid var(--line);
  color: var(--muted);
  background: #04070b;
}

.site-footer strong {
  color: var(--gold-2);
}

@media (max-width: 1120px) {
  .site-header {
    align-items: flex-start;
  }

  .menu-toggle {
    display: inline-flex;
    align-items: center;
  }

  .site-nav {
    position: absolute;
    left: 18px;
    right: 18px;
    top: 78px;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    padding: 18px;
    background: rgba(5, 8, 13, 0.96);
    border: 1px solid var(--line);
  }

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

  .hero-panel {
    position: relative;
    right: auto;
    bottom: auto;
    width: min(620px, 100%);
    margin-top: 42px;
  }

  .hero {
    align-items: start;
  }
}

@media (max-width: 900px) {
  .intro,
  .business-grid,
  .content-grid,
  .card-grid,
  .about-top-grid,
  .about-bottom-grid,
  .tech-band,
  .split,
  .two-col,
  .contact-cta,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .contact-cta {
    align-items: flex-start;
    display: grid;
  }
}

@media (max-width: 620px) {
  .brand {
    min-width: 0;
  }

  .brand strong {
    font-size: 13px;
  }

  .brand small {
    font-size: 11px;
  }

  .hero,
  .page-hero {
    padding-left: 18px;
    padding-right: 18px;
  }

  .hero h1 {
    font-size: 44px;
  }

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

  .section {
    padding: 70px 18px;
  }

  .feature-card,
  .content-card,
  .info-panel,
  .contact-card {
    padding: 24px;
  }

  .contact-actions {
    grid-template-columns: 1fr;
  }
}

.language-switcher {
  position: relative;
  z-index: 60;
  margin-left: 4px;
}

.language-trigger {
  position: relative;
  min-height: 46px;
  display: inline-grid;
  grid-template-columns: auto auto 18px;
  align-items: center;
  gap: 12px;
  padding: 0 14px 0 16px;
  border: 1px solid rgba(241, 211, 138, 0.42);
  background:
    linear-gradient(135deg, rgba(241, 211, 138, 0.12), rgba(84, 200, 255, 0.05)),
    rgba(5, 12, 22, 0.82);
  color: var(--text);
  font: inherit;
  cursor: pointer;
  overflow: hidden;
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.03),
    0 14px 36px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(14px);
}

.language-trigger::before {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(90deg, transparent, rgba(84, 200, 255, 0.16), transparent);
  transform: translateX(-120%);
  transition: transform 0.42s ease;
}

.language-trigger:hover::before,
.language-switcher.open .language-trigger::before {
  transform: translateX(120%);
}

.language-trigger:hover,
.language-switcher.open .language-trigger {
  border-color: rgba(241, 211, 138, 0.88);
  box-shadow:
    0 0 0 1px rgba(241, 211, 138, 0.16),
    0 0 28px rgba(200, 164, 93, 0.2),
    0 18px 42px rgba(0, 0, 0, 0.38);
}

.language-kicker {
  position: relative;
  color: var(--gold-2);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.language-current {
  position: relative;
  min-width: 52px;
  color: var(--silver);
  font-size: 14px;
  font-weight: 700;
  text-align: left;
}

.language-chevron {
  position: relative;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--gold-2);
  border-bottom: 2px solid var(--gold-2);
  transform: rotate(45deg) translateY(-2px);
  transition: transform 0.22s ease;
}

.language-switcher.open .language-chevron {
  transform: rotate(225deg) translate(-2px, -1px);
}

.language-menu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  min-width: 190px;
  padding: 8px;
  border: 1px solid rgba(241, 211, 138, 0.38);
  background:
    linear-gradient(180deg, rgba(10, 20, 35, 0.98), rgba(4, 9, 17, 0.98)),
    rgba(5, 8, 13, 0.96);
  box-shadow:
    0 0 0 1px rgba(84, 200, 255, 0.08),
    0 22px 54px rgba(0, 0, 0, 0.44);
  backdrop-filter: blur(16px);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-6px) scale(0.98);
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.language-switcher.open .language-menu {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

.language-menu::before {
  position: absolute;
  top: -6px;
  right: 22px;
  width: 10px;
  height: 10px;
  content: "";
  border-left: 1px solid rgba(241, 211, 138, 0.38);
  border-top: 1px solid rgba(241, 211, 138, 0.38);
  background: #0a1423;
  transform: rotate(45deg);
}

.language-menu button {
  width: 100%;
  min-height: 42px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 0 12px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--silver);
  font: inherit;
  cursor: pointer;
  text-align: left;
}

.language-menu button:hover,
.language-menu button.active {
  border-color: rgba(84, 200, 255, 0.22);
  background: linear-gradient(90deg, rgba(200, 164, 93, 0.16), rgba(84, 200, 255, 0.08));
  color: #ffffff;
}

.language-menu button.active {
  box-shadow: inset 3px 0 0 var(--gold-2);
}

.language-menu small {
  color: var(--gold-2);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.12em;
}
.text-link::after {
  content: "->";
  margin-left: 8px;
}

@media (max-width: 1120px) {
  .language-switcher {
    margin-left: auto;
  }
}

@media (max-width: 620px) {
  .site-header {
    gap: 12px;
  }

  .language-switcher {
    order: 3;
    width: 100%;
    justify-content: space-between;
  }
}