:root {
  --navy: #0b2436;
  --navy-2: #10314a;
  --teal: #0f766e;
  --gold: #c99a2e;
  --red: #a8322d;
  --ink: #16232e;
  --muted: #5b6b78;
  --line: #e4e9ed;
  --bg: #f7f8fa;
  --card: #ffffff;
  --radius: 20px;
  --radius-lg: 28px;
  --max: 1120px;
  --ease: cubic-bezier(.16,1,.3,1);
  --shadow-sm: 0 1px 2px rgba(16,35,54,0.04), 0 2px 14px -4px rgba(16,35,54,0.06);
  --shadow-md: 0 20px 44px -22px rgba(16,35,54,0.28);
  --shadow-lg: 0 30px 70px -24px rgba(16,35,54,0.4);
  font-size: 16px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.eyebrow {
  display: inline-block;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  font-weight: 700;
  color: var(--teal);
  background: rgba(15,118,110,0.09);
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
}

/* ---------- Motion ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .9s var(--ease), transform .9s var(--ease);
  will-change: opacity, transform;
}
.reveal.in-view { opacity: 1; transform: none; }
.pillars-grid .pillar-card:nth-child(2),
.why-grid .why-card:nth-child(2),
.steps .step:nth-child(2) { transition-delay: .08s; }
.pillars-grid .pillar-card:nth-child(3),
.why-grid .why-card:nth-child(3),
.steps .step:nth-child(3) { transition-delay: .16s; }
.pillars-grid .pillar-card:nth-child(4),
.why-grid .why-card:nth-child(4),
.steps .step:nth-child(4) { transition-delay: .24s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  * { scroll-behavior: auto !important; }
}

/* ---------- Header ---------- */
header.site {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(247,248,250,0.72);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  box-shadow: none;
  transition: box-shadow .35s ease, background-color .35s ease;
}
header.site.scrolled {
  background: rgba(247,248,250,0.92);
  box-shadow: 0 1px 0 rgba(16,35,54,0.06), 0 12px 30px -24px rgba(16,35,54,0.35);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.brand {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-weight: 700;
  font-size: 1.22rem;
  letter-spacing: -0.01em;
  color: var(--navy);
}
.brand small {
  font-weight: 600;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--gold);
}
.nav-links {
  display: flex;
  gap: 30px;
  font-size: 0.93rem;
  font-weight: 500;
  color: var(--navy-2);
}
.nav-links a { position: relative; padding: 4px 0; transition: color .25s ease; }
.nav-links a:hover { color: var(--teal); }
.nav-actions { display: flex; align-items: center; gap: 14px; }
.lang-toggle {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 999px;
  padding: 6px 4px;
  display: flex;
  gap: 2px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
}
.lang-toggle button {
  border: none;
  background: transparent;
  padding: 5px 12px;
  border-radius: 999px;
  cursor: pointer;
  color: var(--muted);
  font: inherit;
  transition: background-color .25s ease, color .25s ease;
}
.lang-toggle button.active { background: var(--navy); color: #fff; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.93rem;
  letter-spacing: -0.005em;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), background-color .25s ease, border-color .25s ease;
}
.btn:hover { transform: translateY(-2px) scale(1.015); }
.btn:active { transform: translateY(0) scale(0.99); }
.btn-primary { background: var(--red); color: #fff; box-shadow: 0 10px 24px -10px rgba(168,50,45,0.55); }
.btn-primary:hover { box-shadow: 0 16px 32px -10px rgba(168,50,45,0.65); }
.btn-outline { background: transparent; border-color: var(--navy-2); color: var(--navy-2); }
.btn-outline:hover { background: rgba(255,255,255,0.06); }
.btn-ghost { background: #fff; border-color: var(--line); color: var(--navy-2); }
.btn-block { width: 100%; }

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 12px;
  cursor: pointer;
  flex-shrink: 0;
}
.hamburger span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 0 auto;
  background: var(--navy);
  transition: transform .25s ease, opacity .25s ease;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 10px 24px 20px;
  border-top: 1px solid var(--line);
}
.mobile-nav a {
  padding: 12px 4px;
  font-weight: 500;
  color: var(--navy-2);
  border-bottom: 1px solid var(--line);
}
.mobile-nav a.btn { border-bottom: none; margin-top: 12px; }
.mobile-nav.open { display: flex; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background: radial-gradient(1200px 500px at 80% -10%, rgba(201,154,46,0.16), transparent 60%),
              radial-gradient(900px 500px at -10% 110%, rgba(15,118,110,0.16), transparent 60%),
              linear-gradient(180deg, #0b2436 0%, #10314a 100%);
  color: #fff;
  padding: 128px 0 96px;
}
.hero .wrap { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 64px; align-items: center; }
.hero h1 { font-size: clamp(2.15rem, 1.2rem + 3vw, 3.25rem); line-height: 1.2; letter-spacing: -0.02em; margin: 0 0 22px; font-weight: 700; }
.hero p.lead { font-size: 1.1rem; color: #cbd7e1; max-width: 560px; margin: 0 0 34px; }
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 34px; }
.hero-note { font-size: 0.85rem; color: #93a4b3; }

.hero-visual {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  padding: 24px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-lg);
}
.metric-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 16px;
  padding: 18px 20px;
  margin-bottom: 12px;
  transition: background-color .3s ease;
}
.metric-card:hover { background: rgba(255,255,255,0.09); }
.metric-card:last-child { margin-bottom: 0; }
.metric-row { display: flex; justify-content: space-between; align-items: baseline; }
.metric-label { font-size: 0.82rem; color: #a9b8c5; }
.metric-value { font-size: 1.5rem; font-weight: 700; color: #fff; letter-spacing: -0.01em; }
.metric-value.up { color: #6fd6a0; }
.bar { height: 6px; border-radius: 4px; background: rgba(255,255,255,0.12); margin-top: 12px; overflow: hidden; }
.bar span { display: block; height: 100%; background: linear-gradient(90deg, var(--gold), #e8c35e); border-radius: 4px; }

/* trust bar */
.trustbar { background: #fff; padding: 26px 0; }
.trustbar .wrap { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.trustbar .label { font-size: 0.82rem; font-weight: 600; color: var(--muted); white-space: nowrap; }
.pill-row { display: flex; gap: 10px; flex-wrap: wrap; }
.pill {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--navy-2);
  background: var(--bg);
  padding: 7px 16px;
  border-radius: 999px;
  transition: background-color .25s ease;
}

/* ---------- Sections ---------- */
section { padding: 128px 0; }
.section-head { max-width: 640px; margin: 0 0 56px; }
.section-head.center { margin: 0 auto 64px; text-align: center; }
.section-head h2 { font-size: clamp(1.7rem, 1.2rem + 1.6vw, 2.4rem); margin: 0 0 16px; color: var(--navy); font-weight: 700; letter-spacing: -0.015em; line-height: 1.25; }
.section-head p { color: var(--muted); font-size: 1.04rem; margin: 0; }

/* pillars (4 core modules) */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
}
.pillar-card {
  background: var(--card);
  border: 1px solid rgba(16,35,54,0.05);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .45s var(--ease), transform .45s var(--ease);
}
.pillar-card:hover { box-shadow: var(--shadow-md); transform: translateY(-6px); }
.pillar-icon {
  width: 54px; height: 54px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--teal), #0b4f4a);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px; color: #fff;
  box-shadow: 0 12px 24px -12px rgba(15,118,110,0.55);
}
.pillar-icon svg { width: 24px; height: 24px; }
.pillar-card h3 { font-size: 1.22rem; margin: 0 0 12px; color: var(--navy); font-weight: 700; letter-spacing: -0.01em; }
.pillar-card p.desc { color: var(--muted); font-size: 0.96rem; margin: 0 0 20px; }
.check-list { list-style: none; padding: 0; margin: 0 0 22px; text-align: left; }
.check-list li {
  padding: 8px 0 8px 26px;
  position: relative;
  font-size: 0.89rem;
  line-height: 1.55;
  color: var(--ink);
}
.check-list li::before {
  content: "";
  position: absolute; left: 0; top: 11px;
  width: 14px; height: 14px;
  background-color: var(--teal);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") no-repeat center / contain;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") no-repeat center / contain;
}
.pillar-value {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  background: rgba(15,118,110,0.06);
  border-radius: 14px;
  padding: 14px 16px;
  font-size: 0.88rem;
  color: var(--navy-2);
}
.pillar-value b { color: var(--teal); }
.icon-sm { display: inline-flex; flex-shrink: 0; color: var(--teal); margin-top: 1px; }
.icon-sm svg { width: 16px; height: 16px; }

/* how it works */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  counter-reset: step;
}
.step { position: relative; padding-top: 8px; }
.step-num {
  width: 42px; height: 42px;
  border-radius: 50%;
  background: var(--navy);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  margin-bottom: 18px;
  box-shadow: 0 12px 22px -12px rgba(11,36,54,0.5);
}
.step h3 { font-size: 1.02rem; margin: 0 0 10px; color: var(--navy); font-weight: 700; letter-spacing: -0.005em; }
.step p { margin: 0; color: var(--muted); font-size: 0.92rem; }

/* why us */
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.why-card { text-align: left; }
.why-card .mark {
  width: 46px; height: 46px;
  border-radius: 14px;
  background: rgba(15,118,110,0.1);
  color: var(--teal);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 14px;
}
.why-card .mark svg { width: 22px; height: 22px; }
.why-card h4 { margin: 0 0 10px; color: var(--navy); font-size: 1.02rem; font-weight: 700; letter-spacing: -0.005em; }
.why-card p { margin: 0; color: var(--muted); font-size: 0.92rem; }

/* pricing / custom quote */
.quote-card {
  max-width: 640px;
  margin: 0 auto;
  background: var(--card);
  border: 1px solid rgba(16,35,54,0.05);
  border-radius: var(--radius-lg);
  padding: 52px 46px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .45s var(--ease), transform .45s var(--ease);
}
.quote-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.price-amount { font-size: 2.1rem; font-weight: 700; color: var(--navy); margin-bottom: 12px; letter-spacing: -0.01em; }
.price-amount span { font-size: 0.85rem; font-weight: 600; color: var(--muted); }
.quote-sub { color: var(--muted); font-size: 0.96rem; margin: 0 0 30px; }
.quote-card ul { list-style: none; padding: 0; margin: 0 0 32px; text-align: left; }
.quote-card ul li {
  padding: 11px 0 11px 30px;
  position: relative;
  font-size: 0.96rem;
  color: var(--ink);
}
.quote-card ul li::before {
  content: "";
  position: absolute; left: 0; top: 14px;
  width: 16px; height: 16px;
  background-color: var(--teal);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") no-repeat center / contain;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") no-repeat center / contain;
}

/* contact */
.contact-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 24px;
  max-width: 640px;
  margin: 0 auto;
  background: linear-gradient(180deg, var(--navy-2) 0%, var(--navy) 100%);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 64px 56px;
  box-shadow: var(--shadow-lg);
}
.contact-info h2 { font-size: clamp(1.5rem, 1.1rem + 1.2vw, 1.85rem); margin: 0 0 16px; font-weight: 700; letter-spacing: -0.015em; }
.contact-info p { color: #b7c4cf; margin: 0 0 30px; }
.contact-info .btn-primary svg { width: 18px; height: 18px; }
.contact-item { display: flex; gap: 12px; align-items: center; font-size: 0.94rem; }
.contact-item .ico { width: 36px; height: 36px; border-radius: 11px; background: rgba(255,255,255,0.08); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.contact-item .ico svg { width: 18px; height: 18px; }
.contact-item div span { display: block; color: #93a4b3; font-size: 0.78rem; }

/* footer */
footer.site { background: #08192a; color: #93a4b3; padding: 56px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 40px; }
.footer-grid h4 { color: #fff; font-size: 0.92rem; margin: 0 0 16px; font-weight: 600; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid ul li { margin-bottom: 11px; font-size: 0.88rem; }
.footer-grid ul li a { transition: color .25s ease; }
.footer-grid ul li a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 24px; font-size: 0.8rem; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

/* responsive */
@media (max-width: 980px) {
  section { padding: 96px 0; }
  .hero { padding: 108px 0 80px; }
  .hero .wrap { grid-template-columns: 1fr; }
  .pillars-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-wrap { padding: 40px 32px; }
  .nav-links { display: none; }
  .mobile-hide { display: none; }
  .hamburger { display: flex; }
}
@media (max-width: 560px) {
  section { padding: 76px 0; }
  .brand { font-size: 1.05rem; }
  .brand small { display: block; font-size: 0.62rem; }
  .lang-toggle { font-size: 0.75rem; }
  .lang-toggle button { padding: 5px 9px; }
  .nav-actions { gap: 8px; }
  .steps { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 1.9rem; }
  .contact-wrap { padding: 32px 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .quote-card { padding: 36px 24px; }
  .pillar-card { padding: 28px 24px; }
}