:root {
  --ink: #15191e;
  --paper: #f3f1ec;
  --muted: #a7b1bd;
  --gold: #b59b72;
  --line: rgba(21, 25, 30, .14);
  --max: 1320px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { background: var(--paper); color: var(--ink); }
a { color: inherit; }

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 1000;
  height: 80px;
  background: rgba(243, 241, 236, .92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}
.site-header__inner {
  width: min(var(--max), calc(100% - 64px));
  height: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.site-logo { display: inline-flex; align-items: center; }
.site-logo img { width: auto; height: 50px; display: block; }
.site-nav { display: flex; align-items: center; gap: 30px; }
.site-nav a { position: relative; font-size: 14px; text-decoration: none; white-space: nowrap; }
.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -9px;
  height: 2px;
  background: var(--gold);
  transition: right .25s ease;
}
.site-nav a:hover::after, .site-nav a[aria-current="page"]::after { right: 0; }
.site-menu {
  width: 42px;
  height: 42px;
  display: none;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
}
.site-menu span, .site-menu span::before, .site-menu span::after {
  display: block;
  width: 20px;
  height: 2px;
  margin: auto;
  background: currentColor;
  content: "";
}
.site-menu span::before { transform: translateY(-6px); }
.site-menu span::after { transform: translateY(4px); }
.site-header-spacer { height: 80px; }

.modern-home { background: var(--paper); }
.home-hero {
  position: relative;
  min-height: min(860px, calc(100vh - 80px));
  display: grid;
  align-items: end;
  overflow: hidden;
  background: var(--ink);
}
.home-hero video, .home-hero__veil { position: absolute; inset: 0; width: 100%; height: 100%; }
.home-hero video { object-fit: cover; opacity: .78; }
.home-hero__veil { background: linear-gradient(90deg, rgba(21, 25, 30, .82), rgba(21, 25, 30, .18) 65%, rgba(21, 25, 30, .38)); }
.home-hero__content { position: relative; z-index: 1; width: min(var(--max), calc(100% - 64px)); margin: 0 auto; padding: 120px 0 96px; color: #fff; }
.eyebrow { margin: 0 0 18px; color: var(--gold); font-size: 12px; letter-spacing: .14em; text-transform: uppercase; }
.home-hero h1 { max-width: 760px; margin: 0; font-size: clamp(44px, 5vw, 72px); line-height: 1.08; font-weight: 500; letter-spacing: 0; }
.home-hero__lead { max-width: 580px; margin: 24px 0 32px; color: rgba(255,255,255,.82); font-size: 18px; line-height: 1.8; }
.button-row { display: flex; flex-wrap: wrap; gap: 12px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 22px; border: 1px solid var(--gold); background: var(--gold); color: var(--ink); font-size: 14px; text-decoration: none; transition: transform .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); color: var(--ink); background: #c8b18c; }
.button--ghost { background: transparent; color: #fff; }
.button--ghost:hover { color: var(--ink); }

.modern-section { padding: 112px 0; }
.modern-section--dark { background: var(--ink); color: #fff; }
.modern-wrap { width: min(var(--max), calc(100% - 64px)); margin: 0 auto; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 32px; margin-bottom: 48px; }
.section-head h2 { max-width: 760px; margin: 0; font-size: clamp(30px, 4vw, 54px); line-height: 1.14; font-weight: 500; }
.section-head p { max-width: 400px; margin: 0; color: #5f6975; line-height: 1.8; }
.modern-section--dark .section-head p { color: #c5cbd1; }
.split-copy { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 80px; align-items: start; }
.split-copy h3 { margin: 0; font-size: clamp(32px, 4vw, 60px); line-height: 1.08; font-weight: 500; }
.split-copy p { max-width: 650px; margin: 0 0 18px; color: #5f6975; font-size: 17px; line-height: 1.9; }
.modern-section--dark .split-copy p { color: #c5cbd1; }
.solution-list { display: grid; border-top: 1px solid var(--line); }
.solution-item { display: grid; grid-template-columns: 80px 1fr auto; gap: 24px; align-items: center; padding: 28px 0; border-bottom: 1px solid var(--line); text-decoration: none; transition: padding .2s ease, color .2s ease; }
.solution-item:hover { padding-left: 12px; color: var(--gold); }
.solution-item__num { color: var(--gold); font-size: 13px; letter-spacing: .12em; }
.solution-item h3 { margin: 0 0 5px; font-size: 22px; font-weight: 500; }
.solution-item p { margin: 0; color: #68727e; font-size: 14px; line-height: 1.6; }
.solution-item__arrow { font-size: 24px; }

.case-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.case-card { background: #fff; border: 1px solid var(--line); text-decoration: none; }
.case-card__media { position: relative; aspect-ratio: 16 / 9; overflow: hidden; background: #101318; }
.case-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.case-card:hover .case-card__media img { transform: scale(1.04); }
.case-card__body { padding: 20px 22px 24px; }
.case-card__body h3 { margin: 0; font-size: 19px; font-weight: 500; }
.case-card__body p { margin: 9px 0 0; color: #68727e; font-size: 14px; }
.text-link { color: inherit; font-size: 14px; text-decoration: none; border-bottom: 1px solid currentColor; padding-bottom: 4px; }

.insight-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 20px; }
.insight-card { min-height: 220px; padding: 26px; border: 1px solid rgba(255,255,255,.18); text-decoration: none; display: flex; flex-direction: column; justify-content: space-between; }
.insight-card--feature { min-height: 460px; background: #222931; }
.insight-card__meta { color: var(--gold); font-size: 12px; letter-spacing: .1em; }
.insight-card h3 { margin: 26px 0 0; font-size: 22px; line-height: 1.35; font-weight: 500; }
.insight-card p { margin: 12px 0 0; color: #c5cbd1; line-height: 1.7; }
.insight-card__date { color: #8d98a5; font-size: 12px; }

.ai-band { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.ai-band h2 { margin: 0; font-size: clamp(32px, 4vw, 58px); font-weight: 500; line-height: 1.12; }
.ai-band p { color: #5f6975; font-size: 17px; line-height: 1.8; }
.ai-points { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 28px 0; }
.ai-point { padding: 15px 0; border-top: 1px solid var(--line); font-size: 14px; }

.modern-page { min-height: 70vh; }
.page-hero { padding: 100px 0 80px; background: var(--paper); }
.page-hero h1 { max-width: 900px; margin: 0; font-size: clamp(42px, 6vw, 78px); font-weight: 500; line-height: 1.06; }
.page-hero p { max-width: 680px; margin: 24px 0 0; color: #5f6975; font-size: 18px; line-height: 1.8; }
.page-content { padding: 80px 0 120px; background: #fff; }
.page-content h2 { margin: 0 0 18px; font-size: 34px; font-weight: 500; }
.page-content p { max-width: 780px; color: #5f6975; font-size: 17px; line-height: 1.9; }
.service-detail-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin-top: 42px; }
.service-detail { padding: 28px; border: 1px solid var(--line); background: var(--paper); }
.service-detail span { color: var(--gold); font-size: 12px; letter-spacing: .12em; }
.service-detail h3 { margin: 18px 0 8px; font-size: 23px; font-weight: 500; }
.service-detail p { margin: 0; font-size: 15px; }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 80px; }
.article-body { max-width: 800px; }
.article-body h2 { margin-top: 42px; }
.article-body ul { padding-left: 22px; color: #5f6975; line-height: 1.9; }
.article-meta { color: #7d8792; font-size: 13px; }
.article-aside { border-left: 1px solid var(--line); padding-left: 24px; }
.article-aside a { display: block; margin: 0 0 16px; color: #5f6975; font-size: 14px; text-decoration: none; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.contact-list { display: grid; gap: 12px; margin-top: 30px; }
.contact-list div { padding: 18px 0; border-top: 1px solid var(--line); }
.contact-list strong { display: block; margin-bottom: 5px; font-size: 12px; color: var(--gold); letter-spacing: .1em; text-transform: uppercase; }
.contact-list span { font-size: 17px; }
.consult-form { margin-top: 28px; padding-top: 26px; border-top: 1px solid var(--line); }
.consult-form label { display: block; margin: 0 0 7px; font-size: 13px; color: #5f6975; }
.consult-form input, .consult-form textarea { width: 100%; padding: 13px 14px; border: 1px solid var(--line); background: var(--paper); color: var(--ink); font: inherit; }
.consult-form textarea { min-height: 120px; resize: vertical; }
.consult-form__field { margin-bottom: 15px; }
.consult-form__status { min-height: 24px; margin-top: 12px; color: #5f6975; font-size: 13px; }

.site-footer { padding: 64px 0 28px; background: var(--ink); color: #fff; }
.site-footer__grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 48px; }
.site-footer h2 { margin: 0 0 18px; font-size: 24px; font-weight: 500; }
.site-footer p, .site-footer a { color: #c5cbd1; font-size: 14px; line-height: 1.8; }
.site-footer a { display: block; text-decoration: none; }
.site-footer a:hover { color: var(--gold); }
.site-footer__bottom { display: flex; justify-content: space-between; gap: 20px; margin-top: 48px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.16); color: #8d98a5; font-size: 12px; }

@media (max-width: 991px) {
  .site-header { height: 64px; }
  .site-header__inner, .modern-wrap, .home-hero__content { width: min(var(--max), calc(100% - 40px)); }
  .site-header-spacer { height: 64px; }
  .site-menu { display: grid; place-items: center; }
  .site-nav { position: absolute; left: 20px; right: 20px; top: 72px; display: none; padding: 12px 20px; background: var(--paper); border: 1px solid var(--line); box-shadow: 0 14px 32px rgba(21,25,30,.12); }
  .site-nav.is-open { display: grid; gap: 0; }
  .site-nav a { padding: 14px 0; border-bottom: 1px solid var(--line); }
  .site-nav a:last-child { border-bottom: 0; }
  .site-nav a::after { display: none; }
  .home-hero { min-height: calc(100svh - 64px); }
  .modern-section { padding: 80px 0; }
  .split-copy, .ai-band, .contact-grid, .article-layout { grid-template-columns: 1fr; gap: 40px; }
  .section-head { display: block; }
  .section-head p { margin-top: 18px; }
  .insight-grid { grid-template-columns: 1fr 1fr; }
  .insight-card--feature { grid-column: 1 / -1; min-height: 300px; }
  .site-footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 575px) {
  .site-header__inner, .modern-wrap, .home-hero__content { width: calc(100% - 32px); }
  .site-logo img { height: 42px; }
  .home-hero__content { padding: 80px 0 56px; }
  .home-hero h1 { font-size: 42px; }
  .home-hero__lead { font-size: 16px; }
  .case-grid, .service-detail-grid, .insight-grid { grid-template-columns: 1fr; }
  .insight-card--feature { grid-column: auto; }
  .solution-item { grid-template-columns: 42px 1fr auto; gap: 12px; }
  .solution-item h3 { font-size: 18px; }
  .solution-item p { font-size: 13px; }
  .site-footer__grid { grid-template-columns: 1fr; gap: 28px; }
  .site-footer__bottom { display: block; }
  .site-footer__bottom span { display: block; margin-top: 8px; }
}