:root {
  --bg: #f7f4f3;
  --text: #111827;
  --muted: #6b7280;
  --panel: rgba(255,255,255,0.86);
  --border: rgba(255,255,255,0.65);
  --shadow: 0 18px 50px rgba(15,23,42,0.08);
  --yellow: #facc15;
  --red: #dc2626;
  --black: #111111;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, Arial, Helvetica, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top, rgba(255,255,255,1), rgba(248,250,252,0.96) 42%, rgba(244,244,245,0.98) 100%);
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.page-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(circle at 12% 20%, rgba(250,204,21,0.16), transparent 24%),
    radial-gradient(circle at 84% 18%, rgba(220,38,38,0.10), transparent 22%);
}
.container { max-width: 1220px; margin: 0 auto; padding: 0 24px; }
.site-header {
  border-bottom: 1px solid rgba(229,231,235,0.8);
  background: rgba(255,255,255,0.82);
  backdrop-filter: blur(10px);
}
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 24px; padding-bottom: 24px;
}
.top-tag {
  font-size: 14px; letter-spacing: 0.14em; color: var(--muted); font-weight: 500;
}
.lang-switcher {
  display: inline-flex; gap: 8px; padding: 6px; border-radius: 999px;
  background: rgba(255,255,255,0.92); border: 1px solid #e5e7eb;
  box-shadow: 0 10px 30px rgba(15,23,42,0.08);
}
.lang-btn {
  border: 0; background: transparent; padding: 10px 16px; border-radius: 999px;
  cursor: pointer; font-weight: 700; color: #374151;
}
.lang-btn.active { background: #111827; color: white; }
.lang-btn[data-lang="zh"].active { background: #dc2626; }
.lang-btn[data-lang="de"].active { background: #e5e7eb; color: #111827; }

.hero {
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 40px;
  align-items: center; padding-top: 32px; padding-bottom: 96px;
}
.brand-name {
  margin: 0; font-size: clamp(42px, 7vw, 72px); line-height: 0.95;
  letter-spacing: -0.03em;
}
.brand-subname {
  margin-top: 14px; font-size: clamp(24px, 3vw, 34px); color: #374151;
}
.hero-copy h2 {
  margin: 24px 0 0; font-size: clamp(28px, 4vw, 44px); line-height: 1.12;
}
.hero-copy p {
  margin-top: 24px; max-width: 820px; font-size: 18px; line-height: 1.85; color: var(--muted);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }

.btn {
  display: inline-block; padding: 14px 22px; border-radius: 18px; font-weight: 700;
}
.btn-dark { background: #111827; color: white; box-shadow: 0 14px 40px rgba(15,23,42,0.22); }
.btn-light { background: white; border: 1px solid #e5e7eb; color: #111827; }

.hero-side { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.panel {
  border-radius: 30px; border: 1px solid var(--border); background: var(--panel);
  box-shadow: var(--shadow); backdrop-filter: blur(10px);
}
.panel-label {
  font-size: 14px; font-weight: 700; color: var(--muted); letter-spacing: 0.06em;
}
.logo-box {
  margin-top: 16px; min-height: 160px; display: flex; align-items: center; justify-content: center;
  border-radius: 24px; border: 1px solid rgba(229,231,235,0.85); background: rgba(255,255,255,0.85);
}
.hero-side .panel { padding: 24px; }
.focus-list { margin-top: 16px; display: grid; gap: 12px; }
.focus-item {
  padding: 14px 16px; border-radius: 18px; background: rgba(255,255,255,0.86);
  border: 1px solid rgba(229,231,235,0.8); color: #374151;
  box-shadow: 0 8px 20px rgba(15,23,42,0.05);
}

.section { padding-top: 84px; padding-bottom: 84px; }
.section-kicker {
  font-size: 14px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.2em; color: var(--muted);
}
.section-title {
  margin: 14px 0 0; font-size: clamp(34px, 5vw, 48px); line-height: 1.08;
}
.section-title.small { font-size: clamp(28px, 4vw, 38px); }
.section-text {
  margin-top: 16px; max-width: 820px; color: var(--muted); font-size: 18px; line-height: 1.8;
}

.cards-grid {
  margin-top: 42px;
  display: grid; gap: 24px;
  grid-template-columns: repeat(3, minmax(0,1fr));
}
.service-card {
  position: relative; overflow: hidden;
  border-radius: 30px; padding: 28px;
  background: rgba(255,255,255,0.9);
  box-shadow: 0 16px 44px rgba(15,23,42,0.09);
  transition: transform .25s ease, box-shadow .25s ease;
}
.service-card:hover { transform: translateY(-8px) scale(1.01); }
.service-card.yellow { border: 1px solid rgba(250,204,21,0.75); }
.service-card.red { border: 1px solid rgba(220,38,38,0.8); }
.service-card.black { border: 1px solid rgba(17,17,17,0.85); }

.card-bar { width: 80px; height: 8px; border-radius: 999px; }
.yellow-bar { background: var(--yellow); }
.red-bar { background: var(--red); }
.black-bar { background: var(--black); }

.card-chip {
  display: inline-flex; margin-top: 18px; padding: 8px 12px; border-radius: 999px;
  border: 1px solid rgba(229,231,235,0.85);
  background: rgba(255,255,255,0.88);
  font-size: 12px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted);
}
.service-card h3 { margin: 18px 0 0; font-size: 32px; line-height: 1.1; }
.card-subtitle { margin-top: 12px; font-size: 14px; font-weight: 600; color: var(--muted); }
.card-copy { margin-top: 20px; font-size: 15px; line-height: 1.8; color: #4b5563; }
.service-card ul { margin: 22px 0 0; padding: 0; list-style: none; display: grid; gap: 14px; }
.service-card li {
  display: flex; gap: 12px; align-items: flex-start; color: #374151; line-height: 1.6;
}
.service-card li::before {
  content: ""; width: 10px; height: 10px; border-radius: 999px; flex: 0 0 10px; margin-top: 8px;
  background: currentColor;
}
.service-card.yellow li { color: #7c5c00; }
.service-card.red li { color: #991b1b; }
.service-card.black li { color: #111827; }

.philosophy-strip {
  border-top: 1px solid rgba(229,231,235,0.8);
  border-bottom: 1px solid rgba(229,231,235,0.8);
  background: linear-gradient(180deg, rgba(248,250,252,0.9), rgba(255,255,255,0.96));
}
.philosophy-grid {
  display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 24px;
  padding-top: 84px; padding-bottom: 84px;
}
.philosophy-card { padding: 32px; }
.philosophy-card p {
  margin: 16px 0 0; color: var(--muted); line-height: 1.8;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: stretch;
}
.contact-panel { padding: 32px; }
.contact-cards {
  margin-top: 28px; display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px;
}
.mini-card {
  padding: 20px; border-radius: 20px; background: rgba(255,255,255,0.84); border: 1px solid rgba(229,231,235,0.8);
}
.mini-label { font-size: 14px; font-weight: 700; color: var(--muted); }
.mini-value { margin-top: 12px; color: #4b5563; }
.qr-grid {
  display: block;
}
.qr-panel { padding: 24px; }
.mini-hint { margin-top: 6px; color: #9ca3af; font-size: 12px; }
.qr-box {
  margin-top: 18px; min-height: 176px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 24px; background: white; border: 1px solid rgba(229,231,235,0.8);
}

.site-footer {
  border-top: 1px solid rgba(229,231,235,0.8);
  background: linear-gradient(180deg, rgba(250,250,250,0.95), rgba(244,244,245,0.98));
}
.footer-grid {
  display: grid; gap: 24px; grid-template-columns: repeat(4, minmax(0,1fr));
  padding-top: 40px; padding-bottom: 20px;
}
.footer-card {
  padding: 22px; border-radius: 24px; border: 1px solid rgba(255,255,255,0.65); background: rgba(255,255,255,0.72);
}
.footer-title { font-size: 14px; font-weight: 700; }
.footer-sub { margin-top: 6px; font-size: 14px; color: var(--muted); }
.footer-copy { margin-top: 14px; color: #6b7280; line-height: 1.7; font-size: 14px; }
.footer-links { margin-top: 14px; display: grid; gap: 10px; }
.footer-links a { color: #6b7280; }
.footer-bottom {
  border-top: 1px solid rgba(229,231,235,0.8);
  padding-top: 20px; padding-bottom: 40px; color: #6b7280; font-size: 14px;
}

@media (max-width: 1100px) {
  .hero, .contact-grid { grid-template-columns: 1fr; }
  .hero-side { grid-template-columns: 1fr 1fr; }
  .cards-grid, .philosophy-grid, .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .topbar { flex-direction: column; align-items: flex-start; gap: 16px; }
  .hero-side, .cards-grid, .philosophy-grid, .footer-grid, .contact-cards { grid-template-columns: 1fr; }
  .section, .philosophy-grid { padding-top: 64px; padding-bottom: 64px; }
  .hero { padding-bottom: 72px; }
  .service-card h3 { font-size: 28px; }
}


.contact-panel,
.qr-panel {
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.qr-box {
  min-height: 260px;
}

.qr-box img {
  max-height: 320px;
  width: auto;
}

@media (max-width: 1100px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}