:root {
  --navy: #14294B;
  --navy-deep: #0B1B33;
  --bronze: #8A4A2B;
  --primary: #14294B;
  --primary-light: #1E3A66;
  --primary-lighter: #8A4A2B;
  --accent: #F0742A;
  --accent-light: #FF9A5C;
  --orange: #F0742A;
  --bg: #FFF8F0;
  --bg-alt: #FFEFE0;
  --text: #1B1B1B;
  --text-light: #3A3A3A;
  --text-muted: #5A5A5A;
  --white: #FFFFFF;
  --shadow: 0 4px 24px rgba(20, 41, 75, 0.08);
  --shadow-lg: 0 12px 48px rgba(20, 41, 75, 0.12);
  --radius: 16px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  overflow-x: hidden;
}

a { color: inherit; }

.skip {
  position: absolute;
  left: 12px;
  top: -48px;
  background: var(--navy);
  color: #fff;
  padding: 8px 12px;
  border-radius: 8px;
  z-index: 1100;
  text-decoration: none;
}
.skip:focus { top: 12px; }

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 2rem;
  transition: var(--transition);
  background: transparent;
}
.navbar.scrolled {
  background: rgba(255, 248, 240, 0.94);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 12px rgba(20, 41, 75, 0.08);
  padding: 0.6rem 2rem;
}
.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--navy);
}
.nav-logo img { height: 52px; width: auto; max-width: 156px; object-fit: contain; display: block; transition: var(--transition); }
.navbar.scrolled .nav-logo img { height: 44px; }
.nav-wordmark {
  display: grid;
  grid-template-columns: 1em 1em;
  gap: 0.12em 0.32em;
  font-size: 18px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.04em;
  align-items: center;
  justify-items: center;
  transition: var(--transition);
}
.navbar.scrolled .nav-wordmark {
  font-size: 16px;
}
.nav-links { display: flex; gap: 1.6rem; list-style: none; }
.nav-links a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}
.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: var(--transition);
}
.nav-links a:hover { color: var(--accent); }
.nav-links a:hover::after { width: 100%; }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
  background: none;
  border: none;
}
.nav-toggle span { width: 24px; height: 2px; background: var(--navy); transition: var(--transition); }

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(160deg, #FFF8F0 0%, #FFEFE0 55%, #FFE3CC 100%);
}
.hero-bg-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.04;
  background-image:
    radial-gradient(circle at 20% 50%, var(--navy) 1px, transparent 1px),
    radial-gradient(circle at 80% 20%, var(--accent) 1px, transparent 1px);
  background-size: 60px 60px, 80px 80px;
}
.hero-content { text-align: center; max-width: 900px; padding: 2rem; position: relative; z-index: 2; }
.hero-logo { margin-bottom: 1.6rem; }
.hero-logo img { height: 110px; width: auto; max-width: min(420px, 86vw); object-fit: contain; display: block; margin: 0 auto; }
.hero-badge {
  display: inline-block;
  padding: 0.4rem 1.2rem;
  background: rgba(240, 116, 42, 0.08);
  border: 1px solid rgba(240, 116, 42, 0.22);
  border-radius: 100px;
  font-size: 0.8rem;
  color: var(--bronze);
  font-weight: 600;
  margin-bottom: 2rem;
  letter-spacing: 1px;
}
.hero-title {
  font-size: clamp(2.25rem, 5.6vw, 3.95rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  color: var(--navy);
}
.hero-title .highlight {
  color: var(--accent);
}
.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 3rem;
  line-height: 2;
}
.hero-cta { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.btn {
  padding: 0.9rem 2.2rem;
  border-radius: 100px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  display: inline-block;
}
.btn-primary {
  background: var(--accent);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(240, 116, 42, 0.32);
}
.btn-primary:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(240, 116, 42, 0.38);
}
.btn-outline {
  background: transparent;
  color: var(--navy);
  border: 2px solid var(--navy);
}
.btn-outline:hover {
  background: var(--navy);
  color: var(--white);
  transform: translateY(-2px);
}
.hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
}
.hero-scroll svg { width: 24px; height: 24px; stroke: var(--text-muted); }
@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
  40% { transform: translateX(-50%) translateY(-8px); }
  60% { transform: translateX(-50%) translateY(-4px); }
}

.section { padding: 6rem 2rem; }
.section-alt { background: var(--bg-alt); }
.page-group,
.section { scroll-margin-top: 88px; }
.quote-card a { color: var(--navy); text-decoration: none; font-weight: 600; }
.quote-card a:hover { color: var(--accent); }
.container { max-width: 1100px; margin: 0 auto; }
.group-header,
.section-header { text-align: center; margin-bottom: 4rem; }
.sub-header { text-align: center; margin-bottom: 2.4rem; }
.sub-header h3 {
  font-size: clamp(1.4rem, 3vw, 1.85rem);
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 0.6rem;
}
.sub-header h4 {
  font-size: clamp(1.25rem, 2.6vw, 1.6rem);
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 0.5rem;
}
.sub-header p {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 620px;
  margin: 0 auto;
  line-height: 1.9;
}
.product-item {
  background: var(--white);
  border-radius: var(--radius);
  padding: 3rem 2.5rem 2.5rem;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(20, 41, 75, 0.06);
}
.product-head { text-align: center; margin-bottom: 1.8rem; }
.product-kicker {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: none;
  color: var(--bronze);
  margin-bottom: 0.7rem;
}
.product-head h3 {
  font-size: clamp(1.5rem, 3.2vw, 2rem);
  color: var(--navy);
  margin-bottom: 0.6rem;
}
.product-head p {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.8;
}
.product-item .pills { margin: 0 0 2.2rem; }
.product-item .mission-grid { margin-bottom: 2.2rem; }
.product-positioning {
  padding: 2.2rem 2rem 2rem;
  background: var(--bg);
  border-radius: var(--radius);
  border-left: 4px solid var(--accent);
}
.product-positioning .sub-header { margin-bottom: 1.8rem; }
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}
.section-title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--navy);
}
.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 620px;
  margin: 0 auto;
  line-height: 1.9;
}

.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; margin-bottom: 2.5rem; }
.about-lead-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 1.2rem; color: var(--navy); }
.about-text p { color: var(--text-light); margin-bottom: 1.2rem; line-height: 2; }
.about-toc {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
  margin: 0 0 1.8rem;
}
.about-toc a {
  padding: 0.42rem 1rem;
  border-radius: 100px;
  background: rgba(20, 41, 75, 0.06);
  color: var(--navy);
  text-decoration: none;
  font-size: 0.86rem;
  font-weight: 600;
  transition: var(--transition);
}
.about-toc a:hover { background: rgba(240, 116, 42, 0.14); color: var(--accent); }
.about-subs { display: flex; flex-direction: column; gap: 1.25rem; }
.about-sub {
  background: var(--white);
  border-radius: var(--radius);
  padding: 2.2rem 2.2rem 2.4rem;
  box-shadow: var(--shadow);
  scroll-margin-top: 88px;
}
.about-sub-head {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.6rem;
  padding-bottom: 1.1rem;
  border-bottom: 1px solid rgba(20, 41, 75, 0.08);
}
.about-sub-index {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(240, 116, 42, 0.1);
  color: var(--accent);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.82rem;
  flex-shrink: 0;
}
.about-sub-parent {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--bronze);
  margin-bottom: 0.28rem;
}
.about-sub-head h3 {
  font-size: clamp(1.15rem, 2.2vw, 1.4rem);
  font-weight: 700;
  color: var(--navy);
}
.about-sub-head p {
  margin-top: 0.4rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}
.about-sub .mission-grid { margin-bottom: 0; }
.about-sub .quote-card,
.about-sub .mission-card,
.about-sub .value-item { background: var(--bg); }
.about-sub .team-card { box-shadow: none; padding: 0; background: transparent; }
.about-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
  position: relative;
}
.about-card::before {
  content: "";
  position: absolute;
  top: -8px;
  left: -8px;
  right: -8px;
  bottom: -8px;
  background: linear-gradient(135deg, #F0742A, #8A4A2B);
  border-radius: calc(var(--radius) + 8px);
  z-index: -1;
  opacity: 0.18;
}
.about-card-item { display: flex; align-items: flex-start; gap: 1rem; margin-bottom: 1.5rem; }
.about-card-item:last-child { margin-bottom: 0; }
.about-card-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(240, 116, 42, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.about-card-icon svg { width: 20px; height: 20px; stroke: var(--accent); }
.about-card-item h4 { font-size: 0.95rem; margin-bottom: 0.3rem; color: var(--navy); }
.about-card-item p { font-size: 0.85rem; color: var(--text-muted); line-height: 1.6; }

.mission-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; margin-bottom: 3rem; }
.mission-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.mission-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--navy), var(--accent));
  opacity: 0;
  transition: var(--transition);
}
.mission-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.mission-card:hover::before { opacity: 1; }
.mission-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(20, 41, 75, 0.08), rgba(240, 116, 42, 0.14));
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
}
.mission-icon svg { width: 28px; height: 28px; stroke: var(--accent); }
.mission-card h3,
.mission-card h4 { font-size: 1.1rem; margin-bottom: 0.8rem; color: var(--navy); }
.mission-card p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.8; }

.values-heading { margin-top: 4rem; margin-bottom: 2rem; }
.values-title { font-size: 1.6rem; }
.values-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.value-item {
  text-align: center;
  padding: 2rem 1.5rem;
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.value-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.value-item h4,
.value-item h5 { font-size: 1rem; color: var(--navy); margin-bottom: 0.6rem; }
.value-item p { font-size: 0.82rem; color: var(--text-muted); line-height: 1.7; }

.pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
  margin: -1.5rem 0 2.5rem;
}
.pill {
  padding: 0.4rem 1rem;
  border-radius: 100px;
  background: rgba(240, 116, 42, 0.1);
  color: var(--bronze);
  font-size: 0.85rem;
  font-weight: 600;
}
.research-ways { margin-top: 0.5rem; }

.archive-layers { display: flex; flex-direction: column; gap: 2rem; }
.layer-card {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 2rem;
  align-items: start;
  background: var(--white);
  border-radius: var(--radius);
  padding: 2.5rem;
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.layer-card:hover { box-shadow: var(--shadow-lg); transform: translateX(4px); }
.layer-number {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--navy), var(--accent));
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
}
.layer-content h3,
.layer-content h5 { font-size: 1.2rem; margin-bottom: 0.8rem; color: var(--navy); font-weight: 700; }
.layer-content h3 span,
.layer-content h5 span { color: var(--accent); }
.layer-content p { color: var(--text-light); line-height: 1.9; font-size: 0.95rem; }

.quotes-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.quote-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--accent);
  transition: var(--transition);
}
.quote-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.quote-card .label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--bronze);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 0.6rem;
}
.quote-card p { font-size: 0.95rem; color: var(--text-light); line-height: 1.7; }

.team-card {
  max-width: 760px;
  margin: 0 auto;
  background: var(--white);
  border-radius: var(--radius);
  padding: 3rem;
  box-shadow: var(--shadow-lg);
  display: flex;
  gap: 2.5rem;
  align-items: flex-start;
}
.team-avatar {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: #1a1410;
  border: 1px solid rgba(20, 41, 75, 0.08);
  flex-shrink: 0;
  overflow: hidden;
}
.team-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 18%;
}
.team-info h3,
.team-info h4 { font-size: 1.4rem; margin-bottom: 0.3rem; color: var(--navy); }
.team-info .role { font-size: 0.85rem; color: var(--accent); font-weight: 600; margin-bottom: 1rem; }
.team-info .bio { font-size: 0.92rem; color: var(--text-light); line-height: 1.9; }
.team-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1.2rem; }
.team-tag {
  padding: 0.3rem 0.8rem;
  background: rgba(240, 116, 42, 0.08);
  border-radius: 100px;
  font-size: 0.75rem;
  color: var(--bronze);
  font-weight: 500;
}

.footer { background: var(--navy-deep); color: #E8E0D8; padding: 4rem 2rem 2rem; }
.footer-content {
  max-width: 1100px;
  margin: 0 auto 3rem;
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: 3rem;
}
.footer-motto {
  font-size: 1.05rem;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.18em;
  line-height: 2;
  margin: 0 0 1.5rem;
  opacity: 0.95;
}
.footer-logo {
  display: inline-block;
  background: var(--white);
  border-radius: 12px;
  padding: 0.55rem 1rem;
  margin-bottom: 1.2rem;
}
.footer-logo img { height: 48px; width: auto; display: block; }
.footer-brand h3 { font-size: 1.2rem; margin-bottom: 1rem; line-height: 1.6; color: #fff; }
.footer-brand p { font-size: 0.9rem; opacity: 0.85; line-height: 1.8; }
.footer-links h4 { font-size: 0.9rem; margin-bottom: 1rem; color: var(--accent-light); }
.footer-links a,
.footer-links span {
  display: block;
  color: #C8C0B8;
  text-decoration: none;
  font-size: 0.85rem;
  margin-bottom: 0.6rem;
  transition: var(--transition);
}
.footer-links a:hover { color: var(--accent-light); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 2rem;
  text-align: center;
  font-size: 0.8rem;
  color: #9A928A;
}
.footer-bottom p { margin-bottom: 0.3rem; }
.footer-bottom a { color: inherit; text-decoration: none; }
.footer-bottom a:hover { color: var(--accent-light); text-decoration: underline; }
.tm-note { font-size: 0.72rem; }

.fade-in { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

@media (max-width: 968px) {
  .about-grid { grid-template-columns: 1fr; gap: 2rem; }
  .mission-grid { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .quotes-grid { grid-template-columns: 1fr; }
  .footer-content { grid-template-columns: 1fr; gap: 2rem; }
  .team-card { flex-direction: column; align-items: center; text-align: center; }
  .team-tags { justify-content: center; }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(255, 248, 240, 0.98);
    flex-direction: column;
    padding: 1.5rem 2rem;
    gap: 1rem;
    box-shadow: var(--shadow);
  }
  .nav-links.active { display: flex; }
  .nav-toggle { display: flex; }
  .nav-wordmark { display: none; }
  .values-grid { grid-template-columns: 1fr; }
  .layer-card { grid-template-columns: 1fr; gap: 1rem; }
  .product-item { padding: 2rem 1.2rem 1.6rem; }
  .product-positioning { padding: 1.6rem 1.1rem 1.2rem; }
  .about-sub { padding: 1.6rem 1.2rem 1.8rem; }
  .section { padding: 4rem 1.5rem; }
  .nav-logo img { height: 44px; }
  .hero-logo img { height: 88px; }
}