:root {
  --gsb-sea: #14324b;
  --gsb-sea-deep: #0e2537;
  --gsb-sea-soft: #1d466a;
  --gsb-sand: #e8dcc0;
  --gsb-sand-warm: #f2ead6;
  --gsb-sand-edge: #cdbf9c;
  --gsb-ink: #20242b;
  --gsb-paper: #fbf8f1;
  --gsb-muted: #5b6470;
  --gsb-line: rgba(20, 50, 75, 0.14);
  --gsb-shell: 1080px;
  --gsb-serif: "Lora", Georgia, "Times New Roman", serif;
  --gsb-ui: "Source Sans 3", system-ui, -apple-system, Segoe UI, sans-serif;
  --gsb-step: 1.35rem;
  --gsb-radius: 14px;
  --gsb-shadow: 0 18px 44px rgba(14, 37, 55, 0.14);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--gsb-paper);
  color: var(--gsb-ink);
  font-family: var(--gsb-serif);
  font-size: 1.02rem;
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; }

a { color: var(--gsb-sea); }

.gsb-shell {
  width: 100%;
  max-width: var(--gsb-shell);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.gsb-visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0; border: 0;
  clip: rect(0 0 0 0);
  overflow: hidden;
}

.gsb-skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--gsb-sea);
  color: var(--gsb-sand);
  padding: 0.6rem 1rem;
  border-radius: 0 0 8px 0;
  z-index: 60;
  font-family: var(--gsb-ui);
}
.gsb-skip:focus { left: 0; }

/* ---------- Header ---------- */
.gsb-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 248, 241, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--gsb-line);
}

.gsb-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 66px;
  gap: 1rem;
}

.gsb-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--gsb-sea);
}

.gsb-brand-mark { display: inline-flex; }

.gsb-brand-text {
  font-family: var(--gsb-serif);
  font-weight: 600;
  font-size: 1.22rem;
  letter-spacing: 0.01em;
}

.gsb-nav { display: flex; align-items: center; }

.gsb-nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  border: 1px solid var(--gsb-line);
  border-radius: 10px;
  background: transparent;
  cursor: pointer;
}
.gsb-nav-bars,
.gsb-nav-bars::before,
.gsb-nav-bars::after {
  content: "";
  display: block;
  width: 20px; height: 2px;
  background: var(--gsb-sea);
  position: relative;
  transition: transform 0.25s ease, opacity 0.2s ease;
}
.gsb-nav-bars::before { position: absolute; top: -6px; }
.gsb-nav-bars::after  { position: absolute; top: 6px; }

.gsb-nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.gsb-nav-list a {
  font-family: var(--gsb-ui);
  font-size: 1rem;
  text-decoration: none;
  color: var(--gsb-ink);
  padding: 0.4rem 0;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.gsb-nav-list a:hover,
.gsb-nav-list a:focus-visible {
  color: var(--gsb-sea);
  border-bottom-color: var(--gsb-sand-edge);
}

@media (max-width: 720px) {
  .gsb-nav-list {
    position: absolute;
    left: 0; right: 0;
    top: 66px;
    background: var(--gsb-paper);
    border-bottom: 1px solid var(--gsb-line);
    display: grid;
    gap: 0.2rem;
    padding: 0.6rem 1.25rem 1rem;
    box-shadow: var(--gsb-shadow);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
    transition: max-height 0.3s ease, opacity 0.25s ease;
  }
  .gsb-nav-list.gsb-open {
    max-height: 320px;
    opacity: 1;
    pointer-events: auto;
  }
  .gsb-nav-list a {
    display: block;
    padding: 0.7rem 0;
    border-bottom: 1px solid var(--gsb-line);
  }
}

@media (min-width: 721px) {
  .gsb-nav-toggle { display: none; }
  .gsb-nav-list {
    display: flex;
    gap: 1.8rem;
  }
}

.gsb-nav-list-static {
  position: static;
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem 1.4rem;
  max-height: none;
  opacity: 1;
  pointer-events: auto;
  overflow: visible;
  padding: 0;
  background: transparent;
  border: 0;
  box-shadow: none;
}
.gsb-nav-list-static a { border-bottom: 2px solid transparent; padding: 0.3rem 0; }

/* ---------- Hero ---------- */
.gsb-hero {
  position: relative;
  background:
    radial-gradient(1200px 480px at 80% -10%, var(--gsb-sea-soft) 0%, transparent 60%),
    linear-gradient(160deg, var(--gsb-sea) 0%, var(--gsb-sea-deep) 100%);
  color: var(--gsb-sand-warm);
  padding: 4.5rem 0 6rem;
  overflow: hidden;
}
.gsb-hero-inner { position: relative; z-index: 2; max-width: 760px; }

.gsb-hero-eyebrow {
  font-family: var(--gsb-ui);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.78rem;
  color: var(--gsb-sand-edge);
  margin: 0 0 1.1rem;
}
.gsb-hero-title {
  font-family: var(--gsb-serif);
  font-weight: 600;
  font-size: clamp(2.4rem, 7vw, 4.2rem);
  line-height: 1.05;
  margin: 0 0 1.1rem;
  color: #fff;
}
.gsb-hero-lead {
  font-size: clamp(1.1rem, 2.6vw, 1.4rem);
  font-style: italic;
  max-width: 40ch;
  margin: 0 0 2rem;
  color: var(--gsb-sand);
}
.gsb-hero-actions { display: flex; flex-wrap: wrap; gap: 0.8rem; }

.gsb-hero-wave {
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  line-height: 0;
  z-index: 1;
}
.gsb-hero-wave svg { width: 100%; height: 64px; }

.gsb-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--gsb-ui);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  padding: 0.72rem 1.5rem;
  border-radius: 999px;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}
.gsb-btn-solid {
  background: var(--gsb-sand);
  color: var(--gsb-sea-deep);
  border: 1px solid var(--gsb-sand);
}
.gsb-btn-solid:hover { background: var(--gsb-sand-warm); transform: translateY(-2px); box-shadow: var(--gsb-shadow); }
.gsb-btn-line {
  background: transparent;
  color: var(--gsb-sand-warm);
  border: 1px solid rgba(232, 220, 192, 0.55);
}
.gsb-btn-line:hover { border-color: var(--gsb-sand); transform: translateY(-2px); }

/* ---------- About ---------- */
.gsb-about { padding: 4.5rem 0; }
.gsb-about-grid {
  display: grid;
  gap: 2.4rem;
}
.gsb-section-title {
  font-family: var(--gsb-serif);
  font-weight: 600;
  font-size: clamp(1.7rem, 4vw, 2.3rem);
  color: var(--gsb-sea);
  margin: 0 0 1.2rem;
  position: relative;
  padding-bottom: 0.6rem;
}
.gsb-section-title::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 54px; height: 3px;
  background: var(--gsb-sand-edge);
  border-radius: 2px;
}
.gsb-section-title-light { color: var(--gsb-sand-warm); }
.gsb-section-title-light::after { background: var(--gsb-sand); }

.gsb-dropcap { margin-top: 0; }
.gsb-dropcap::first-letter {
  font-family: var(--gsb-serif);
  font-weight: 600;
  float: left;
  font-size: 3.6rem;
  line-height: 0.78;
  padding: 0.28rem 0.6rem 0 0;
  color: var(--gsb-sea);
}

.gsb-about-side {
  align-self: start;
  background: var(--gsb-sand);
  border: 1px solid var(--gsb-sand-edge);
  border-radius: var(--gsb-radius);
  padding: 1.4rem 1.5rem;
}
.gsb-fact-list { list-style: none; margin: 0; padding: 0; }
.gsb-fact-list li {
  display: grid;
  gap: 0.15rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--gsb-sand-edge);
}
.gsb-fact-list li:last-child { border-bottom: 0; }
.gsb-fact-key {
  font-family: var(--gsb-ui);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  color: var(--gsb-sea-soft);
}
.gsb-fact-val {
  font-family: var(--gsb-serif);
  font-size: 1.08rem;
  color: var(--gsb-ink);
}

@media (min-width: 820px) {
  .gsb-about-grid {
    grid-template-columns: 1.7fr 1fr;
    align-items: start;
  }
}

/* ---------- Work ---------- */
.gsb-work {
  padding: 4.8rem 0 5.2rem;
  background:
    linear-gradient(180deg, var(--gsb-sea) 0%, var(--gsb-sea-deep) 100%);
  color: var(--gsb-sand-warm);
}
.gsb-work-head { max-width: 620px; margin-bottom: 2.4rem; }
.gsb-work-sub {
  font-family: var(--gsb-ui);
  font-size: 1.05rem;
  color: var(--gsb-sand);
  margin: 0;
}
.gsb-rows {
  list-style: none;
  margin: 0; padding: 0;
  counter-reset: none;
}
.gsb-row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem 1.4rem;
  align-items: start;
  padding: 1.8rem 0;
  border-top: 1px solid rgba(232, 220, 192, 0.22);
}
.gsb-row:last-child { border-bottom: 1px solid rgba(232, 220, 192, 0.22); }
.gsb-row-index {
  font-family: var(--gsb-serif);
  font-style: italic;
  font-size: 1.6rem;
  color: var(--gsb-sand-edge);
  min-width: 2.4ch;
}
.gsb-row-title {
  font-family: var(--gsb-serif);
  font-weight: 600;
  font-size: clamp(1.2rem, 3vw, 1.5rem);
  margin: 0 0 0.5rem;
  color: #fff;
}
.gsb-row-text {
  font-family: var(--gsb-ui);
  margin: 0;
  color: var(--gsb-sand);
  max-width: 62ch;
  line-height: 1.6;
}
.gsb-row:hover .gsb-row-index { color: var(--gsb-sand); }

@media (min-width: 640px) {
  .gsb-row { grid-template-columns: 4rem 1fr; gap: 1.2rem 2rem; }
}

/* ---------- Contact ---------- */
.gsb-contact { padding: 4.8rem 0; }
.gsb-contact-grid {
  display: grid;
  gap: 2.2rem;
  align-items: start;
}
.gsb-contact-intro p { max-width: 46ch; }
.gsb-contact-email { margin-top: 1.6rem; }
.gsb-contact-card {
  font-style: normal;
  background: var(--gsb-sea);
  color: var(--gsb-sand-warm);
  border-radius: var(--gsb-radius);
  padding: 1.8rem 1.8rem;
  box-shadow: var(--gsb-shadow);
}
.gsb-card-label {
  font-family: var(--gsb-ui);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.74rem;
  color: var(--gsb-sand-edge);
  margin: 0 0 0.7rem;
}
.gsb-card-address {
  font-family: var(--gsb-serif);
  font-size: 1.12rem;
  line-height: 1.7;
  margin: 0 0 1rem;
}
.gsb-card-reg {
  font-family: var(--gsb-ui);
  font-size: 0.92rem;
  color: var(--gsb-sand);
  border-top: 1px solid rgba(232, 220, 192, 0.25);
  padding-top: 0.9rem;
  margin: 0;
}

@media (min-width: 820px) {
  .gsb-contact-grid { grid-template-columns: 1.1fr 1fr; }
}

/* ---------- Footer ---------- */
.gsb-footer {
  background: var(--gsb-sea-deep);
  color: var(--gsb-sand);
  padding: 3rem 0 3.4rem;
}
.gsb-footer-grid {
  display: grid;
  gap: 1.8rem;
}
.gsb-footer-brand {
  font-family: var(--gsb-serif);
  font-weight: 600;
  font-size: 1.3rem;
  color: #fff;
  margin: 0 0 0.7rem;
}
.gsb-footer-address {
  font-style: normal;
  font-family: var(--gsb-ui);
  margin: 0 0 0.6rem;
  color: var(--gsb-sand);
}
.gsb-footer-reg {
  font-family: var(--gsb-ui);
  font-size: 0.88rem;
  color: var(--gsb-sand-edge);
  margin: 0;
  max-width: 52ch;
}
.gsb-footer-links p { margin: 0 0 0.6rem; }
.gsb-footer-links a {
  font-family: var(--gsb-ui);
  color: var(--gsb-sand-warm);
  text-decoration: none;
  border-bottom: 1px solid rgba(232, 220, 192, 0.35);
  padding-bottom: 1px;
}
.gsb-footer-links a:hover { border-bottom-color: var(--gsb-sand); }

@media (min-width: 720px) {
  .gsb-footer-grid { grid-template-columns: 1.6fr 1fr; align-items: start; }
  .gsb-footer-links { text-align: right; }
}

/* ---------- Reveal animation ---------- */
.gsb-reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.gsb-reveal.gsb-seen {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .gsb-reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- Privacy page ---------- */
.gsb-legal {
  padding: 3.4rem 0 4.4rem;
}
.gsb-legal-inner { max-width: 760px; }
.gsb-legal h1 {
  font-family: var(--gsb-serif);
  font-weight: 600;
  font-size: clamp(1.9rem, 5vw, 2.6rem);
  color: var(--gsb-sea);
  margin: 0 0 0.6rem;
}
.gsb-legal-intro {
  font-style: italic;
  color: var(--gsb-muted);
  margin: 0 0 2rem;
}
.gsb-legal h2 {
  font-family: var(--gsb-serif);
  font-weight: 600;
  font-size: 1.3rem;
  color: var(--gsb-sea);
  margin: 2rem 0 0.6rem;
}
.gsb-legal p, .gsb-legal li {
  font-family: var(--gsb-ui);
  color: var(--gsb-ink);
}
.gsb-legal ul { padding-left: 1.2rem; }
.gsb-legal li { margin-bottom: 0.4rem; }
.gsb-legal a { color: var(--gsb-sea); }