:root {
  --bg: #0a0e14;
  --bg-alt: #0e1420;
  --surface: #141b28;
  --line: rgba(255, 255, 255, 0.08);
  --text: #e8ecf2;
  --text-dim: #94a0b4;
  --accent: #c9a15c;
  --accent-soft: rgba(201, 161, 92, 0.14);
  --font-display: "Fraunces", "Noto Serif SC", Georgia, serif;
  --font-body: "Inter", "Noto Sans SC", -apple-system, "PingFang SC", "Helvetica Neue", sans-serif;
  --radius: 14px;
  --header-h: 72px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.container {
  width: min(1120px, 100% - 48px);
  margin-inline: auto;
}

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-h);
  z-index: 100;
  transition: background 0.35s ease, border-color 0.35s ease;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(10, 14, 20, 0.82);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
}
.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  letter-spacing: 0.02em;
}
.brand-amp { color: var(--accent); font-weight: 300; }
.nav { display: flex; gap: 2.2rem; align-items: center; }
.nav a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: color 0.25s;
}
.nav a:hover { color: var(--text); }
.nav .nav-cta {
  color: var(--bg);
  background: var(--accent);
  padding: 0.55rem 1.2rem;
  border-radius: 999px;
  font-weight: 500;
  transition: background 0.25s, transform 0.25s;
}
.nav .nav-cta:hover { background: #d9b374; color: var(--bg); transform: translateY(-1px); }
.menu-toggle {
  display: none;
  background: none;
  border: 0;
  width: 40px; height: 40px;
  flex-direction: column;
  justify-content: center;
  gap: 7px;
  cursor: pointer;
}
.menu-toggle span {
  display: block; height: 2px; width: 24px;
  background: var(--text);
  margin-inline: auto;
  transition: transform 0.3s, opacity 0.3s;
}
.menu-toggle.open span:nth-child(1) { transform: translateY(4.5px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { transform: translateY(-4.5px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-top: var(--header-h);
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black 30%, transparent 75%);
  opacity: 0.5;
}
.hero-glow {
  position: absolute;
  width: 60vw; height: 60vw;
  left: 50%; top: -20%;
  transform: translateX(-50%);
  background: radial-gradient(circle, var(--accent-soft) 0%, transparent 60%);
  filter: blur(20px);
}
.hero-inner { position: relative; z-index: 1; padding-block: 4rem; }
.eyebrow {
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 1.4rem;
}
.hero-title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2.6rem, 6.2vw, 4.6rem);
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin-bottom: 1.6rem;
}
.hero-title em {
  font-style: italic;
  font-weight: 400;
  color: var(--accent);
}
.hero-sub {
  max-width: 560px;
  color: var(--text-dim);
  font-size: 1.05rem;
  margin-bottom: 2.6rem;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.9rem;
  border-radius: 999px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.25s, background 0.25s, border-color 0.25s, color 0.25s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--accent); color: #10151f; }
.btn-primary:hover { background: #d9b374; }
.btn-ghost { border-color: var(--line); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-block { width: 100%; }
.hero-scroll {
  position: absolute;
  bottom: 2rem; left: 50%;
  transform: translateX(-50%);
  width: 24px; height: 40px;
  border: 1px solid var(--line);
  border-radius: 12px;
}
.hero-scroll span {
  position: absolute;
  left: 50%; top: 8px;
  width: 3px; height: 8px;
  margin-left: -1.5px;
  border-radius: 2px;
  background: var(--accent);
  animation: scrollHint 1.8s ease-in-out infinite;
}
@keyframes scrollHint {
  0%, 100% { transform: translateY(0); opacity: 1; }
  60% { transform: translateY(12px); opacity: 0; }
}

/* ---------- Strip ---------- */
.strip { border-block: 1px solid var(--line); background: var(--bg-alt); }
.strip-inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  padding-block: 2.2rem;
}
.strip-item { display: flex; flex-direction: column; gap: 0.3rem; }
.strip-label {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.strip-value { font-family: var(--font-display); font-size: 1.1rem; }

/* ---------- Sections ---------- */
.section { padding-block: clamp(5rem, 10vw, 8rem); }
.section-alt { background: var(--bg-alt); border-block: 1px solid var(--line); }
.section-head { max-width: 640px; margin-bottom: 3.5rem; }
.section-head h2,
.philosophy-text h2,
.contact-text h2 {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  line-height: 1.2;
  margin-bottom: 1.2rem;
}
.section-lede, .philosophy-text p, .contact-text p { color: var(--text-dim); }
.philosophy-text p + p { margin-top: 1.1rem; }

/* Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}
.card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2.2rem 1.8rem 1.9rem;
  transition: transform 0.35s ease, border-color 0.35s ease;
}
.card:hover {
  transform: translateY(-6px);
  border-color: rgba(201, 161, 92, 0.4);
}
.card-num {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--accent);
  font-size: 0.95rem;
  margin-bottom: 1.6rem;
}
.card h3 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.3rem;
  margin-bottom: 0.8rem;
  line-height: 1.3;
}
.card p { color: var(--text-dim); font-size: 0.94rem; }

/* Philosophy */
.philosophy-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 4rem;
  align-items: center;
}
.philosophy-quote {
  border-left: 2px solid var(--accent);
  padding-left: 2rem;
}
.philosophy-quote p {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 300;
  font-size: clamp(1.8rem, 3.4vw, 2.6rem);
  line-height: 1.25;
}

/* Company table */
.company-table { border-top: 1px solid var(--line); }
.company-row {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 2rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--line);
}
.company-row dt {
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-dim);
  padding-top: 0.25rem;
}
.company-row dd { font-size: 1.02rem; }
.company-row a { color: var(--accent); text-decoration: none; }
.company-row a:hover { text-decoration: underline; }

/* Contact */
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 4rem;
  align-items: start;
}
.contact-form {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2.2rem;
  display: grid;
  gap: 1.2rem;
}
.field { display: grid; gap: 0.45rem; }
.field label {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.field .optional { text-transform: none; letter-spacing: 0; opacity: 0.7; }
.field input,
.field textarea {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 0.75rem 0.9rem;
  transition: border-color 0.25s;
  resize: vertical;
}
.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.form-status { font-size: 0.9rem; color: var(--accent); min-height: 1.4em; }
.form-status.error { color: #e0705c; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding-block: 3rem; }
.footer-inner { display: grid; gap: 1.4rem; }
.footer-brand { font-family: var(--font-display); font-size: 1.15rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 1.6rem; }
.footer-links a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.82rem;
  transition: color 0.25s;
}
.footer-links a:hover { color: var(--text); }
.footer-copy { color: var(--text-dim); font-size: 0.8rem; }

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    gap: 0;
    background: rgba(10, 14, 20, 0.97);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
    padding: 1rem 0;
    transform: translateY(-110%);
    transition: transform 0.35s ease;
  }
  .nav.open { transform: none; }
  .nav a { padding: 0.9rem; width: 100%; text-align: center; }
  .nav .nav-cta { width: auto; margin-top: 0.6rem; }
  .menu-toggle { display: flex; }
  .strip-inner { grid-template-columns: 1fr; gap: 1.4rem; }
  .philosophy-inner,
  .contact-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .company-row { grid-template-columns: 1fr; gap: 0.4rem; }
}

/* ---------- Language toggle ---------- */
.header-tools { display: flex; align-items: center; gap: 0.8rem; }
.lang-toggle {
  background: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-dim);
  font-family: var(--font-body);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  padding: 0.35rem 0.9rem;
  cursor: pointer;
  transition: color 0.25s, border-color 0.25s;
}
.lang-toggle:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- Chinese typography ---------- */
html[lang="zh-Hans"] body { letter-spacing: 0.01em; }
html[lang="zh-Hans"] .hero-title,
html[lang="zh-Hans"] .section-head h2,
html[lang="zh-Hans"] .philosophy-text h2,
html[lang="zh-Hans"] .contact-text h2 {
  letter-spacing: 0.02em;
  line-height: 1.3;
}
html[lang="zh-Hans"] .philosophy-quote p { letter-spacing: 0.03em; }
html[lang="zh-Hans"] .nav a { letter-spacing: 0.1em; }
html[lang="zh-Hans"] .eyebrow,
html[lang="zh-Hans"] .strip-label,
html[lang="zh-Hans"] .company-row dt,
html[lang="zh-Hans"] .field label { letter-spacing: 0.14em; }

/* ---------- Policy pages ---------- */
.policy-main { padding-top: calc(var(--header-h) + 3.5rem); padding-bottom: 5rem; }
.policy-container { max-width: 760px; }
.policy-title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2rem, 4.5vw, 3rem);
  line-height: 1.2;
  margin-bottom: 0.8rem;
}
.policy-updated {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin-bottom: 3rem;
  padding-bottom: 1.6rem;
  border-bottom: 1px solid var(--line);
}
.policy-body h3 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.25rem;
  margin: 2.2rem 0 0.7rem;
  color: var(--text);
}
.policy-body p {
  color: var(--text-dim);
  font-size: 0.98rem;
}
.policy-body a { color: var(--accent); text-decoration: none; }
.policy-body a:hover { text-decoration: underline; }
.policy-back { margin-top: 3.5rem; }
.footer-links a.active { color: var(--accent); }

/* ---------- Brand logo ---------- */
.brand-logo {
  display: block;
  height: 20px;
  width: auto;
}
.footer-logo {
  display: block;
  height: 24px;
  width: auto;
}
@media (max-width: 860px) {
  .brand-logo { height: 17px; }
}