/* ===== NexusM&A — Premium Portal ===== */
:root {
  /* Brand palette — navy × gold, traditional/premium */
  --navy-900: #0a1a30;
  --navy-800: #0e2240;
  --navy-700: #142d52;
  --navy-600: #1c3c6b;
  --navy-500: #2a508a;
  --navy-100: #e5ecf5;

  --gold-700: #8a6f2e;
  --gold-600: #a88940;
  --gold-500: #c9a961;
  --gold-400: #d9bd80;
  --gold-100: #f3ead4;

  --ivory: #f7f2e9;
  --paper: #faf7f0;
  --white: #ffffff;

  --ink-900: #16181d;
  --ink-700: #2e3340;
  --ink-500: #5a6173;
  --ink-300: #98a0b1;
  --ink-200: #c8cdd8;
  --ink-100: #e7eaf0;

  --serif-jp: "Shippori Mincho", "Noto Serif JP", "游明朝", "YuMincho", serif;
  --sans-jp: "Noto Sans JP", -apple-system, "Hiragino Sans", "Yu Gothic", sans-serif;
  --serif-en: "Cormorant Garamond", "Shippori Mincho", serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;

  --shadow-sm: 0 1px 2px rgba(10, 26, 48, 0.06), 0 1px 1px rgba(10, 26, 48, 0.04);
  --shadow-md: 0 4px 14px rgba(10, 26, 48, 0.08), 0 2px 4px rgba(10, 26, 48, 0.04);
  --shadow-lg: 0 24px 60px rgba(10, 26, 48, 0.14), 0 8px 20px rgba(10, 26, 48, 0.06);
  --shadow-gold: 0 8px 30px rgba(168, 137, 64, 0.18);

  --r-sm: 2px;
  --r-md: 4px;
  --r-lg: 6px;

  --container: 1240px;
  --container-narrow: 1040px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; overflow-x: hidden; }
body {
  font-family: var(--sans-jp);
  color: var(--ink-900);
  background: var(--paper);
  font-feature-settings: "palt";
  -webkit-font-smoothing: antialiased;
  line-height: 1.7;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
img { max-width: 100%; display: block; }

/* ===== Typography ===== */
.font-serif-jp { font-family: var(--serif-jp); }
.font-serif-en { font-family: var(--serif-en); font-style: italic; }
.font-sans { font-family: var(--sans-jp); }
.font-mono { font-family: var(--mono); }

.eyebrow {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--gold-600);
  font-weight: 500;
}
.eyebrow::before {
  content: "";
  display: inline-block;
  width: 28px;
  height: 1px;
  background: var(--gold-500);
  vertical-align: middle;
  margin-right: 14px;
  margin-bottom: 3px;
}

h1, h2, h3, h4 { font-family: var(--serif-jp); font-weight: 500; letter-spacing: 0.04em; line-height: 1.45; color: var(--navy-900); margin: 0; }
.display-en { font-family: var(--serif-en); font-style: italic; font-weight: 400; letter-spacing: 0.01em; line-height: 1; }

/* ===== Layout ===== */
.container { max-width: var(--container); margin: 0 auto; padding: 0 32px; }
.container.narrow { max-width: var(--container-narrow); }
section { padding: 120px 0; }
@media (max-width: 760px) {
  section { padding: 72px 0; }
  .container { padding: 0 20px; }
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--ink-100);
}
.site-header.scrolled { background: rgba(10, 26, 48, 0.98); border-bottom-color: rgba(201, 169, 97, 0.15); }
.site-header.scrolled .nav-link,
.site-header.scrolled .brand-name,
.site-header.scrolled .brand-mark { color: var(--ivory); }
.site-header.scrolled .brand-mark { border-color: var(--gold-500); color: var(--gold-500); }
.site-header.scrolled .nav-link:hover { color: var(--gold-400); }
.site-header.scrolled .nav-cta { background: var(--gold-500); color: var(--navy-900); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 86px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}
.brand-mark {
  width: 40px;
  height: 40px;
  border: 1px solid var(--gold-600);
  color: var(--gold-700);
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 22px;
  font-weight: 500;
  display: grid;
  place-items: center;
  letter-spacing: 0;
}
.brand-name {
  font-family: var(--serif-jp);
  font-size: 19px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--navy-900);
}
.brand-name .sub {
  display: block;
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 10px;
  color: var(--gold-600);
  letter-spacing: 0.18em;
  margin-top: -2px;
  font-weight: 400;
}
.site-header.scrolled .brand-name .sub { color: var(--gold-400); }

nav.primary { display: flex; align-items: center; gap: 36px; }
.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--ink-200);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  background: rgba(255,255,255,0.72);
  position: relative;
  z-index: 130;
}
.menu-toggle span {
  width: 20px;
  height: 1px;
  background: currentColor;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.menu-toggle.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.site-header.scrolled .menu-toggle {
  color: var(--ivory);
  border-color: rgba(201,169,97,0.36);
  background: rgba(247,242,233,0.06);
}
.nav-link {
  font-size: 13.5px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--ink-700);
  position: relative;
  padding: 8px 0;
  transition: color 0.2s;
  cursor: pointer;
}
.nav-link:hover { color: var(--navy-800); }
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1px;
  background: var(--gold-500);
}
.nav-cta {
  background: var(--navy-800);
  color: var(--ivory);
  padding: 13px 26px;
  font-size: 13px;
  letter-spacing: 0.08em;
  font-weight: 500;
  transition: all 0.2s;
  border: 1px solid var(--navy-800);
}
.nav-cta:hover { background: var(--gold-500); border-color: var(--gold-500); color: var(--navy-900); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 17px 34px;
  font-size: 13.5px;
  letter-spacing: 0.1em;
  font-weight: 500;
  border: 1px solid transparent;
  transition: all 0.25s ease;
  cursor: pointer;
}
.btn-primary { background: var(--gold-500); color: var(--navy-900); border-color: var(--gold-500); }
.btn-primary:hover { background: var(--gold-600); border-color: var(--gold-600); }
.btn-secondary { background: var(--navy-800); color: var(--ivory); border-color: var(--navy-800); }
.btn-secondary:hover { background: var(--navy-900); }
.btn-ghost { background: transparent; color: var(--navy-800); border-color: var(--navy-700); }
.btn-ghost:hover { background: var(--navy-800); color: var(--ivory); }
.btn-ghost-light { background: transparent; color: var(--ivory); border-color: rgba(247, 242, 233, 0.4); }
.btn-ghost-light:hover { background: var(--ivory); color: var(--navy-900); border-color: var(--ivory); }
.btn .arrow {
  display: inline-block;
  flex: 0 0 28px;
  width: 28px;
  height: 12px;
  background: transparent;
  position: relative;
}
.btn .arrow::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: currentColor;
  transform: translateY(-50%);
}
.btn .arrow::after {
  content: "";
  position: absolute;
  right: 1px; top: 50%;
  width: 8px; height: 8px;
  border-top: 1px solid currentColor;
  border-right: 1px solid currentColor;
  transform: translateY(-50%) rotate(45deg);
  transform-origin: center;
}

/* ===== Tags / Badges ===== */
.tag {
  display: inline-flex;
  align-items: center;
  font-size: 11px;
  letter-spacing: 0.12em;
  padding: 5px 11px;
  border: 1px solid var(--ink-200);
  color: var(--ink-700);
  background: var(--white);
  font-weight: 500;
}
.tag-gold { color: var(--gold-700); border-color: var(--gold-400); background: var(--gold-100); }
.tag-navy { color: var(--ivory); border-color: var(--navy-800); background: var(--navy-800); }
.tag-success { color: #2e6b3f; background: #e2efe5; border-color: #c6dcca; }
.tag-new { color: #8b3a1f; background: #fbe8df; border-color: #f1c9b3; }

/* ===== Page hero (interior pages) ===== */
.page-hero {
  background: linear-gradient(180deg, var(--navy-900) 0%, var(--navy-800) 100%);
  color: var(--ivory);
  padding: 180px 0 110px;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 20% 30%, rgba(201, 169, 97, 0.15) 1px, transparent 0),
    radial-gradient(1px 1px at 70% 60%, rgba(201, 169, 97, 0.1) 1px, transparent 0),
    radial-gradient(1px 1px at 45% 80%, rgba(201, 169, 97, 0.12) 1px, transparent 0);
  background-size: 200px 200px, 250px 250px, 180px 180px;
  pointer-events: none;
}
.page-hero .container { position: relative; }
.page-hero h1 { color: var(--ivory); font-size: 56px; letter-spacing: 0.08em; line-height: 1.3; }
.page-hero .eyebrow { color: var(--gold-400); }
.page-hero .eyebrow::before { background: var(--gold-400); }
.page-hero .lead { color: rgba(247, 242, 233, 0.75); font-size: 16px; max-width: 640px; margin-top: 28px; line-height: 1.9; }
.breadcrumb { display: flex; gap: 12px; font-size: 12px; color: rgba(247, 242, 233, 0.6); letter-spacing: 0.06em; margin-bottom: 32px; }
.breadcrumb a { cursor: pointer; }
.breadcrumb a:hover { color: var(--gold-400); }
.breadcrumb .sep { color: var(--gold-600); }

/* ===== Section header ===== */
.section-head { text-align: center; margin-bottom: 80px; }
.section-head .eyebrow { margin-bottom: 18px; display: inline-block; }
.section-head h2 { font-size: 38px; }
.section-head .lead { color: var(--ink-500); margin-top: 18px; font-size: 15px; line-height: 1.9; max-width: 600px; margin-left: auto; margin-right: auto; }

/* ===== Cards ===== */
.card {
  background: var(--white);
  border: 1px solid var(--ink-100);
  transition: all 0.25s ease;
}
.card:hover { border-color: var(--gold-400); box-shadow: var(--shadow-md); }

/* ===== Footer ===== */
.site-footer {
  background: var(--navy-900);
  color: rgba(247, 242, 233, 0.7);
  padding: 100px 0 40px;
  border-top: 1px solid rgba(201, 169, 97, 0.25);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 60px;
  padding-bottom: 60px;
  border-bottom: 1px solid rgba(247, 242, 233, 0.08);
}
.footer-grid h5 { color: var(--ivory); font-family: var(--serif-jp); font-size: 14px; letter-spacing: 0.1em; margin: 0 0 22px; font-weight: 500; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; }
.footer-grid li { padding: 6px 0; font-size: 13px; }
.footer-grid li a { transition: color 0.2s; cursor: pointer; }
.footer-grid li a:hover { color: var(--gold-400); }
.footer-brand .brand-mark { border-color: var(--gold-500); color: var(--gold-500); }
.footer-brand .brand-name { color: var(--ivory); }
.footer-brand p { font-size: 12.5px; line-height: 2; margin: 22px 0 0; max-width: 320px; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: rgba(247, 242, 233, 0.45);
}
.footer-bottom .legal {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.text-link {
  appearance: none;
  border: 0;
  background: transparent;
  padding: 0;
  color: var(--gold-700);
  font: inherit;
  text-decoration: underline;
  cursor: pointer;
}
.text-link:hover { color: var(--navy-900); }

/* ===== Forms ===== */
.field { display: block; margin-bottom: 26px; }
.field label {
  display: block;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--navy-700);
  margin-bottom: 10px;
  font-weight: 500;
}
.field label .req { color: #b94a3c; margin-left: 6px; font-size: 10px; }
.field input[type="text"],
.field input[type="email"],
.field input[type="tel"],
.field input[type="number"],
.field select,
.field textarea {
  width: 100%;
  border: 1px solid var(--ink-200);
  background: var(--white);
  padding: 14px 16px;
  font-size: 14px;
  font-family: var(--sans-jp);
  color: var(--ink-900);
  transition: all 0.2s;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--gold-500);
  box-shadow: 0 0 0 3px rgba(201, 169, 97, 0.15);
}
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.checkbox-group, .radio-group { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  display: inline-flex;
  align-items: center;
  padding: 10px 18px;
  border: 1px solid var(--ink-200);
  background: var(--white);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.15s;
  user-select: none;
}
.chip:hover { border-color: var(--navy-500); }
.chip.selected { background: var(--navy-800); color: var(--ivory); border-color: var(--navy-800); }

/* Numeric ticker */
.ticker-num { font-family: var(--serif-en); font-style: italic; font-weight: 500; color: var(--navy-900); }

/* Decorative divider */
.gold-rule {
  width: 56px;
  height: 1px;
  background: var(--gold-500);
  margin: 0 auto;
}

/* Anchor offset for hash nav */
.anchor { scroll-margin-top: 100px; }

/* Placeholders for imagery */
.ph {
  background:
    repeating-linear-gradient(135deg, rgba(20, 45, 82, 0.04) 0 1px, transparent 1px 12px),
    linear-gradient(135deg, var(--navy-100) 0%, var(--ivory) 100%);
  position: relative;
  overflow: hidden;
}
.ph::after {
  content: attr(data-label);
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: var(--serif-en);
  font-style: italic;
  color: var(--navy-500);
  letter-spacing: 0.08em;
  font-size: 13px;
  opacity: 0.7;
}
.ph-dark {
  background:
    repeating-linear-gradient(135deg, rgba(201, 169, 97, 0.05) 0 1px, transparent 1px 14px),
    linear-gradient(135deg, var(--navy-700) 0%, var(--navy-900) 100%);
}
.ph-dark::after { color: var(--gold-400); }
.ph.visual {
  background-size: cover;
  background-position: center;
  position: relative;
  overflow: hidden;
}
.ph.visual::after { display: none; }
.ph.visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(10, 26, 48, 0.18), rgba(10, 26, 48, 0.02) 45%, rgba(201, 169, 97, 0.08)),
    radial-gradient(circle at 80% 10%, rgba(247, 242, 233, 0.16), transparent 34%);
  pointer-events: none;
}
.visual-boardroom { background-image: url("assets/generated/hero-advisory.webp"); }
.visual-seller { background-image: url("assets/generated/seller-succession.webp"); }
.visual-buyer { background-image: url("assets/generated/buyer-strategy.webp"); }
.visual-manufacturing { background-image: url("assets/generated/industry-manufacturing.webp"); }
.visual-saas { background-image: url("assets/generated/industry-saas.webp"); }
.visual-healthcare { background-image: url("assets/generated/industry-healthcare.webp"); }
.visual-logistics { background-image: url("assets/generated/industry-logistics.webp"); }
.visual-food { background-image: url("assets/generated/industry-food.webp"); }
.visual-office { background-image: url("assets/generated/news-insight.webp"); }
.ph.visual.visual-portrait {
  background-image: url("assets/generated/company-profile.webp");
  background-position: 88% center;
}

/* ===== Animations ===== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.in-view { animation: fadeUp 0.8s ease both; }

/* Responsive */
@media (max-width: 960px) {
  .header-inner {
    height: 70px;
    padding: 0 20px;
  }
  .brand-mark {
    width: 36px;
    height: 36px;
    font-size: 20px;
  }
  .brand-name {
    font-size: 17px;
  }
  .brand-name .sub {
    font-size: 9px;
    letter-spacing: 0.14em;
  }
  .menu-toggle { display: inline-flex; }
  nav.primary {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    padding: 14px 20px 24px;
    background: rgba(255,255,255,0.98);
    border-bottom: 1px solid var(--ink-100);
    box-shadow: var(--shadow-lg);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
    max-height: calc(100vh - 70px);
    overflow-y: auto;
  }
  nav.primary.mobile-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .site-header.scrolled nav.primary {
    background: rgba(10,26,48,0.98);
    border-bottom-color: rgba(201,169,97,0.18);
  }
  nav.primary .nav-link {
    display: block;
    padding: 15px 4px;
    border-bottom: 1px solid var(--ink-100);
    font-size: 14px;
  }
  .site-header.scrolled nav.primary .nav-link {
    border-bottom-color: rgba(247,242,233,0.1);
  }
  .nav-link.active::after { display: none; }
  .nav-link.active {
    color: var(--gold-700);
  }
  .site-header.scrolled .nav-link.active {
    color: var(--gold-400);
  }
  nav.primary .nav-cta {
    margin-top: 16px;
    width: 100%;
    padding: 15px 20px;
  }
  .page-hero h1 { font-size: 36px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .footer-bottom { flex-direction: column; gap: 16px; }
}

@media (max-width: 600px) {
  section { padding: 64px 0; }
  .container { padding: 0 18px; }
  .page-hero {
    padding: 108px 0 64px;
  }
  .page-hero h1 {
    font-size: 32px;
    line-height: 1.45;
    letter-spacing: 0.04em;
  }
  .page-hero .lead {
    font-size: 14px;
    line-height: 1.9;
  }
  .breadcrumb {
    flex-wrap: wrap;
    gap: 6px;
    line-height: 1.8;
  }
  .section-head h2 {
    font-size: 30px !important;
    line-height: 1.55;
  }
  .section-head .lead {
    font-size: 14px;
    line-height: 1.9;
  }
  .btn {
    width: 100%;
    justify-content: center;
    padding: 15px 20px;
    gap: 12px;
    white-space: normal;
    text-align: center;
  }
  .btn .arrow {
    flex-basis: 22px;
    width: 22px;
  }
  .menu-toggle {
    width: 44px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .legal {
    flex-direction: column;
    gap: 10px;
  }
}