:root {
  --color-primary: #175895;
  --color-primary-light: #5b9bd5;
  --color-accent: #ff7418;
  --color-accent-light: #ffa227;
  --color-accent-deep: #ff6312;
  --color-ink: #12161b;
  --color-ink-alt: #1b2028;
  --color-text: #edeff2;
  --color-text-muted: rgba(237, 239, 242, 0.62);
  --color-border: rgba(255, 255, 255, 0.12);
  --max-width: 1280px;
  --header-height: 68px;
  --radius-sm: 4px;
  --radius-md: 6px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Plus Jakarta Sans", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--color-text);
  background: var(--color-ink);
  line-height: 1.6;
}

h1, h2, h3 {
  font-family: "Cabinet Grotesk", "Noto Sans SC", "PingFang SC", sans-serif;
  font-weight: 800;
  letter-spacing: -0.01em;
}

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

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  display: flex;
  align-items: center;
  background: rgba(18, 22, 27, 0.92);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(6px);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 2px;
  font-size: 18px;
  font-weight: 800;
  font-family: "Cabinet Grotesk", "Noto Sans SC", sans-serif;
  white-space: nowrap;
  letter-spacing: 0.02em;
}

.brand .brand-my,
.brand .brand-hub {
  color: var(--color-text);
}

.brand .brand-cn {
  color: var(--color-accent);
}

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links {
  display: flex;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  display: inline-block;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  color: var(--color-text);
  transition: background 0.15s ease, color 0.15s ease;
}

.nav-links a:hover,
.nav-links a.active {
  background: var(--color-ink-alt);
  color: var(--color-accent-light);
}

.lang-switch {
  display: flex;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  overflow: hidden;
}

.lang-switch button {
  border: none;
  background: transparent;
  padding: 6px 14px;
  font-size: 13px;
  cursor: pointer;
  color: var(--color-text-muted);
}

.lang-switch button.active {
  background: var(--color-accent);
  color: #14100a;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--color-text);
}

/* Hero: diagonal cut photo block + brush watermark */
.hero {
  position: relative;
  overflow: hidden;
  padding: 88px 0 120px;
}

.hero::before {
  content: "";
  position: absolute;
  top: -180px;
  right: -220px;
  width: 640px;
  height: 640px;
  background: conic-gradient(from 210deg at 40% 40%, var(--color-accent-light), var(--color-accent-deep) 30%, transparent 55%);
  opacity: 0.14;
  filter: blur(2px);
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 2;
}

.hero-photo {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 46%;
  clip-path: polygon(28% 0, 100% 0, 100% 100%, 0% 100%);
  background:
    linear-gradient(200deg, rgba(18, 22, 27, 0) 30%, rgba(18, 22, 27, 0.95) 100%),
    linear-gradient(210deg, #5c3a15, #a8611f 35%, #d99a3d 60%, #f6c778 80%, #ffe6b0 100%);
}

.hero-inner {
  max-width: 620px;
}

.hero .section-label {
  color: var(--color-accent-light);
}

.hero h1 {
  font-size: clamp(34px, 5vw, 54px);
  line-height: 1.05;
  margin: 14px 0 18px;
}

.hero p {
  font-size: 17px;
  max-width: 480px;
  color: var(--color-text-muted);
  margin: 0 0 28px;
}

.section-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent-light);
}

.btn {
  display: inline-block;
  padding: 13px 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  border: none;
  font-family: inherit;
}

.btn-accent {
  background: var(--color-accent);
  color: #1a1206;
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 1px solid rgba(255, 255, 255, 0.35);
}

.btn[disabled],
.btn.is-disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Sections */
.section {
  padding: 80px 0;
}

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

.section-title {
  font-size: clamp(28px, 4vw, 40px);
  margin: 10px 0 12px;
}

.section-subtitle {
  color: var(--color-text-muted);
  margin: 0 0 36px;
  max-width: 640px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.card {
  background: var(--color-ink);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: 26px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.35);
}

.card:nth-child(2) {
  border-top-color: var(--color-primary-light);
}

.card:nth-child(4) {
  border-top-color: var(--color-primary-light);
}

.card h3 {
  margin: 0 0 10px;
  font-size: 18px;
  color: var(--color-text);
}

.card p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 14px;
}

.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(255, 116, 24, 0.14);
  color: var(--color-accent-light);
  font-size: 12px;
  margin-bottom: 12px;
  font-weight: 600;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.contact-item dt {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 6px;
}

.contact-item dd {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
}

/* Footer */
.site-footer {
  background: #0b0e12;
  color: rgba(237, 239, 242, 0.5);
  padding: 32px 0;
  font-size: 14px;
  border-top: 1px solid var(--color-border);
}

.site-footer .container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

/* Mobile */
@media (max-width: 860px) {
  .hero-photo {
    width: 100%;
    opacity: 0.35;
    clip-path: none;
  }

  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-ink);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: stretch;
    padding: 12px 24px 20px;
    gap: 14px;
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s ease;
  }

  .nav.is-open {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
  }

  .nav-links {
    flex-direction: column;
    gap: 4px;
  }

  .nav-toggle {
    display: flex;
  }
}