/* ========================================================================
   KUS NG · 全站共享设计系统 v2
   Design tokens, glass system, typography, header, footer, FAB
   ======================================================================== */

:root {
  /* === Backgrounds: pure black with subtle warm tones === */
  --bg: #000000;
  --bg-deep: #000000;
  --bg-soft: #06060a;
  --bg-elev: #0a0a10;
  --bg-warm: #0c0907;

  /* === Gold spectrum: bronze, restrained === */
  --gold-bright: #f5dca0;
  --gold: #c9a55c;
  --gold-deep: #8e6d2f;
  --gold-shadow: #5a4520;
  --gold-glow: rgba(201, 165, 92, 0.35);
  --gold-glow-soft: rgba(201, 165, 92, 0.10);

  /* === Ink (text) === */
  --ink: #ede1c8;
  --ink-soft: #b5a584;
  --ink-mute: #6b6155;
  --ink-dim: #3d3830;

  /* === Lines === */
  --line: rgba(201, 165, 92, 0.10);
  --line-strong: rgba(201, 165, 92, 0.28);
  --line-bright: rgba(201, 165, 92, 0.5);

  /* === Apple iOS 26 Liquid Glass === */
  /* multi-layer composite — use as bg + multiple shadow inset */
  --glass-bg: rgba(14, 13, 11, 0.42);
  --glass-bg-strong: rgba(10, 9, 8, 0.62);
  --glass-edge-top: inset 0 1px 0 rgba(255, 240, 210, 0.10);
  --glass-edge-bottom: inset 0 -1px 0 rgba(0, 0, 0, 0.4);
  --glass-edge-left: inset 1px 0 0 rgba(255, 240, 210, 0.04);
  --glass-edge-right: inset -1px 0 0 rgba(0, 0, 0, 0.3);
  --glass-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
  --glass-blur: blur(40px) saturate(180%) brightness(1.1);

  /* === Typography === */
  /* CN — Noto Serif SC for body, ZCOOL XiaoWei for display */
  --serif-cn: 'Noto Serif SC', 'Songti SC', 'STSong', serif;
  --display-cn: 'ZCOOL XiaoWei', 'Noto Serif SC', 'Songti SC', serif;
  --kai-cn: 'Ma Shan Zheng', 'KaiTi', 'STKaiti', cursive;
  /* EN — Fraunces (variable) for editorial display, EB Garamond for italic */
  --serif-en: 'Fraunces', 'EB Garamond', Georgia, serif;
  --display-en: 'Fraunces', Georgia, serif;
  --italic-en: 'EB Garamond', 'Fraunces', Georgia, serif;
  --sans: 'Inter', -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;

  /* === Layout === */
  --container: 1280px;
  --container-wide: 1440px;
  --gutter: clamp(1.25rem, 3vw, 2.5rem);
  --radius: 2px;
  --radius-md: 6px;
  --radius-lg: 14px;

  /* === Easing === */
  --ease-out: cubic-bezier(0.18, 0.7, 0.2, 1);
  --ease-in-out: cubic-bezier(0.65, 0.05, 0.36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  background: #000;
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 300;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
}

/* Global gold-foil noise texture — subtle */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.025;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.95   0 0 0 0 0.78   0 0 0 0 0.45   0 0 0 1 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

/* Soft global gold mist — bottom-fixed */
body::after {
  content: "";
  position: fixed;
  bottom: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 120vw;
  height: 60vh;
  background: radial-gradient(ellipse at center, rgba(201, 165, 92, 0.045) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
  filter: blur(60px);
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
  position: relative;
  z-index: 2;
}

.container--wide {
  max-width: var(--container-wide);
}

/* ============================================================
   GLASS SYSTEM — Apple iOS 26 Liquid Glass replication
   ============================================================ */
.glass {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow:
    var(--glass-edge-top),
    var(--glass-edge-bottom),
    var(--glass-edge-left),
    var(--glass-edge-right),
    var(--glass-shadow);
  border: 1px solid rgba(255, 240, 210, 0.06);
  position: relative;
  overflow: hidden;
}

.glass::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg,
    rgba(255, 240, 210, 0.04) 0%,
    transparent 35%,
    transparent 65%,
    rgba(255, 240, 210, 0.02) 100%);
  pointer-events: none;
  border-radius: inherit;
}

/* Specular highlight that "moves" — used on hero buttons */
.glass--specular::after {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(105deg,
    transparent 40%,
    rgba(255, 240, 210, 0.06) 50%,
    transparent 60%);
  pointer-events: none;
  border-radius: inherit;
  transition: transform 1s var(--ease-out);
}

.glass--specular:hover::after {
  transform: translate(20%, 20%);
}

/* ============================================================
   HEADER — frosted, with refined shapes
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 110px;
  display: flex;
  align-items: center;
  background: rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(32px) saturate(170%);
  -webkit-backdrop-filter: blur(32px) saturate(170%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  transition: background 0.5s, border-color 0.5s, height 0.5s;
}

.site-header.scrolled {
  background: rgba(0, 0, 0, 0.78);
  border-bottom-color: rgba(201, 165, 92, 0.14);
  height: 78px;
}

.site-header::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 320px;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--gold), transparent);
  opacity: 0.5;
}

.nav {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  width: 100%;
  position: relative;
  gap: 3rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  text-decoration: none;
  color: var(--ink);
  justify-self: start;
}

.brand__mark {
  position: relative;
  width: 46px;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: width 0.5s, height 0.5s;
}

.site-header.scrolled .brand__mark {
  width: 40px;
  height: 40px;
}

.brand__mark svg { width: 100%; height: 100%; }

.brand__mark::after {
  content: "";
  position: absolute;
  right: -1.4rem;
  top: 10%;
  bottom: 10%;
  width: 1px;
  background: linear-gradient(to bottom, transparent, rgba(201, 165, 92, 0.35), transparent);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  padding-left: 0.3rem;
}

.brand__name {
  font-family: var(--display-en);
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: 0.42em;
  color: var(--ink);
  margin-right: -0.42em;
}

.brand__sub {
  font-family: var(--display-cn);
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  color: var(--gold);
  margin-top: 8px;
  font-weight: 400;
  opacity: 0.85;
}

.nav__links {
  display: flex;
  list-style: none;
  gap: 3.2rem;
  align-items: center;
  justify-self: center;
}

.nav__links a {
  font-family: var(--display-cn);
  font-size: 0.95rem;
  font-weight: 400;
  letter-spacing: 0.28em;
  color: var(--ink-soft);
  text-decoration: none;
  transition: color 0.4s;
  position: relative;
  padding: 8px 0;
}

.nav__links a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 1px;
  background: var(--gold);
  transform: translateX(-50%);
  transition: width 0.4s var(--ease-out);
}

.nav__links a:hover { color: var(--gold-bright); }
.nav__links a:hover::after { width: 100%; }
.nav__links a.is-active { color: var(--gold); }
.nav__links a.is-active::after { width: 100%; }

.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.95rem 1.9rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.32em;
  color: var(--gold);
  text-decoration: none;
  text-transform: uppercase;
  border: 1px solid rgba(201, 165, 92, 0.45);
  border-radius: 999px;
  background: rgba(201, 165, 92, 0.04);
  backdrop-filter: blur(20px);
  transition: all 0.4s var(--ease-out);
  position: relative;
  overflow: hidden;
  justify-self: end;
}

.nav__cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--gold-bright), var(--gold), var(--gold-deep));
  transform: translateY(101%);
  transition: transform 0.5s var(--ease-out);
  z-index: -1;
}

.nav__cta:hover {
  color: #1a1208;
  border-color: var(--gold-bright);
  box-shadow: 0 0 24px var(--gold-glow);
}

.nav__cta:hover::before { transform: translateY(0); }

.nav__cta .arrow { transition: transform 0.4s; }
.nav__cta:hover .arrow { transform: translateX(3px); }

.nav__toggle {
  display: none;
  background: rgba(201, 165, 92, 0.06);
  backdrop-filter: blur(10px);
  border: 1px solid var(--gold-deep);
  color: var(--gold);
  width: 42px;
  height: 42px;
  cursor: pointer;
  border-radius: var(--radius);
  font-size: 1.1rem;
}

/* ============================================================
   BRAND MARK SYSTEM — 「源点」徽标 (gold radiant dot)
   Used in header, footer, section markers
   ============================================================ */
.origin-mark {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.origin-mark__ring {
  position: absolute;
  inset: 0;
  border: 1px solid var(--gold);
  border-radius: 50%;
}

.origin-mark__ring--inner {
  inset: 22%;
  border-color: var(--gold-deep);
}

.origin-mark__core {
  width: 16%;
  height: 16%;
  border-radius: 50%;
  background: var(--gold-bright);
  box-shadow: 0 0 12px var(--gold-bright), 0 0 4px var(--gold);
  animation: origin-pulse 3s ease-in-out infinite;
}

@keyframes origin-pulse {
  0%, 100% { opacity: 0.7; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.4); }
}

/* Section eyebrow with origin-mark dot */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.36em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 1.8rem;
}

.eyebrow::before {
  content: "";
  display: block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 8px var(--gold-glow);
}

.eyebrow--center {
  justify-content: center;
}
.eyebrow--center::before { display: none; }
.eyebrow--center::after { display: none; }
.eyebrow--centered {
  display: inline-flex;
  align-items: center;
  gap: 1.2rem;
}
.eyebrow--centered::before,
.eyebrow--centered::after {
  content: "";
  display: block;
  width: 50px;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--gold), transparent);
  border-radius: 0;
  box-shadow: none;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  padding: 1.15rem 2.6rem;
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.26em;
  text-decoration: none;
  text-transform: uppercase;
  border-radius: 999px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.5s var(--ease-out);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn .arrow {
  display: inline-block;
  transition: transform 0.4s;
}

.btn:hover .arrow { transform: translateX(4px); }

.btn--gold {
  background: linear-gradient(135deg, #f5dca0 0%, #c9a55c 50%, #8e6d2f 100%);
  color: #18120a;
  box-shadow:
    0 8px 32px rgba(201, 165, 92, 0.32),
    inset 0 1px 0 rgba(255, 240, 210, 0.5),
    inset 0 -1px 0 rgba(0, 0, 0, 0.18);
}

.btn--gold:hover {
  transform: translateY(-2px);
  box-shadow:
    0 14px 42px rgba(201, 165, 92, 0.55),
    inset 0 1px 0 rgba(255, 240, 210, 0.6),
    inset 0 -1px 0 rgba(0, 0, 0, 0.18);
}

/* Glass ghost — Apple-style liquid glass */
.btn--ghost {
  background: rgba(20, 18, 14, 0.42);
  border-color: rgba(255, 240, 210, 0.14);
  color: var(--ink);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  box-shadow:
    inset 0 1px 0 rgba(255, 240, 210, 0.08),
    inset 0 -1px 0 rgba(0, 0, 0, 0.3);
}

.btn--ghost:hover {
  border-color: var(--gold);
  color: var(--gold-bright);
  background: rgba(201, 165, 92, 0.08);
  box-shadow:
    0 0 24px var(--gold-glow-soft),
    inset 0 1px 0 rgba(201, 165, 92, 0.15),
    inset 0 -1px 0 rgba(0, 0, 0, 0.3);
}

/* ============================================================
   FAB — refined liquid glass
   ============================================================ */
.fab-group {
  position: fixed;
  right: 1.6rem;
  bottom: 1.6rem;
  z-index: 99;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.fab {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(14, 13, 11, 0.55);
  backdrop-filter: blur(32px) saturate(180%);
  -webkit-backdrop-filter: blur(32px) saturate(180%);
  border: 1px solid rgba(255, 240, 210, 0.10);
  color: var(--gold);
  text-decoration: none;
  cursor: pointer;
  transition: all 0.4s var(--ease-out);
  box-shadow:
    0 4px 24px rgba(0, 0, 0, 0.6),
    inset 0 1px 0 rgba(255, 240, 210, 0.08),
    inset 0 -1px 0 rgba(0, 0, 0, 0.4);
}

.fab:hover {
  background: linear-gradient(135deg, #f5dca0, #c9a55c, #8e6d2f);
  color: #1a1208;
  border-color: var(--gold);
  transform: translateY(-3px);
  box-shadow: 0 8px 32px var(--gold-glow);
}

.fab svg { width: 20px; height: 20px; }

/* ============================================================
   PAGE HERO (about / services / etc.)
   ============================================================ */
.page-hero {
  position: relative;
  min-height: 60vh;
  padding: 180px 0 100px;
  display: flex;
  align-items: center;
  background: #000;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 70vmin;
  height: 70vmin;
  background: radial-gradient(circle, rgba(201, 165, 92, 0.10) 0%, transparent 60%);
  filter: blur(60px);
  pointer-events: none;
  z-index: 0;
}

.page-hero__stars {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.page-hero__inner {
  position: relative;
  z-index: 2;
  text-align: center;
  width: 100%;
}

.page-hero__breadcrumb {
  font-family: var(--sans);
  font-size: 0.68rem;
  letter-spacing: 0.36em;
  color: var(--ink-mute);
  text-transform: uppercase;
  margin-bottom: 2rem;
}

.page-hero__breadcrumb a {
  color: var(--gold);
  text-decoration: none;
  transition: opacity 0.3s;
}

.page-hero__breadcrumb a:hover { opacity: 0.7; }
.page-hero__breadcrumb span { margin: 0 0.7rem; color: var(--ink-dim); }

.page-hero__title {
  font-family: var(--display-cn);
  font-weight: 400;
  font-size: clamp(48px, 7vw, 96px);
  line-height: 1.15;
  letter-spacing: 0.06em;
  margin-bottom: 1.5rem;
  background: linear-gradient(180deg, #f5dca0 0%, #c9a55c 50%, #8e6d2f 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 30px rgba(201, 165, 92, 0.25));
}

.page-hero__subtitle {
  font-family: var(--serif-cn);
  font-weight: 400;
  font-style: italic;
  font-size: clamp(15px, 1.3vw, 19px);
  color: var(--ink-soft);
  max-width: 660px;
  margin: 0 auto 1.8rem;
  line-height: 1.8;
}

.page-hero__sub-en {
  font-family: var(--italic-en);
  font-style: italic;
  font-size: 0.95rem;
  letter-spacing: 0.3em;
  color: var(--gold);
  opacity: 0.8;
  text-transform: lowercase;
  font-weight: 400;
}

.page-hero__sub-en .dot { margin: 0 0.6em; opacity: 0.6; }

/* ============================================================
   CTA SECTION
   ============================================================ */
.cta-section {
  position: relative;
  padding: clamp(5rem, 9vw, 8rem) 0;
  background: #000;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 90%;
  height: 90%;
  background: radial-gradient(ellipse at center, rgba(201, 165, 92, 0.08) 0%, transparent 60%);
  filter: blur(60px);
  pointer-events: none;
  z-index: 0;
}

.cta-section__inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 760px;
  margin: 0 auto;
}

.cta-section__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 1.2rem;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.42em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 1.8rem;
}

.cta-section__eyebrow::before,
.cta-section__eyebrow::after {
  content: "";
  display: block;
  width: 50px;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--gold), transparent);
}

.cta-section__title {
  font-family: var(--display-cn);
  font-weight: 400;
  font-size: clamp(32px, 4.6vw, 60px);
  line-height: 1.3;
  letter-spacing: 0.06em;
  margin-bottom: 1.8rem;
  background: linear-gradient(180deg, #f5dca0 0%, #b8954e 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.cta-section__desc {
  font-family: var(--serif-cn);
  font-size: 1rem;
  line-height: 1.95;
  color: var(--ink-soft);
  margin-bottom: 2.8rem;
  font-weight: 300;
}

.cta-section__buttons {
  display: inline-flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  position: relative;
  padding: 5.5rem 0 2.5rem;
  background: #000;
  border-top: 1px solid var(--line);
  overflow: hidden;
  z-index: 2;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 50%;
  height: 240px;
  background: radial-gradient(ellipse at top, rgba(201, 165, 92, 0.15) 0%, transparent 70%);
  filter: blur(60px);
  pointer-events: none;
}

.footer__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 4rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--line);
}

.footer__brand .brand { margin-bottom: 1.6rem; }

.footer__tagline {
  font-family: var(--display-cn);
  font-weight: 400;
  font-size: 1rem;
  color: var(--gold);
  line-height: 1.8;
  max-width: 280px;
  letter-spacing: 0.08em;
}

.footer__col h4 {
  font-family: var(--sans);
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.36em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.footer__col ul { list-style: none; padding: 0; margin: 0; }
.footer__col li { margin-bottom: 0.8rem; }

.footer__col a {
  font-size: 0.85rem;
  color: var(--ink-soft);
  text-decoration: none;
  transition: color 0.3s;
}
.footer__col a:hover { color: var(--gold); }

.footer__contact {
  font-size: 0.85rem;
  color: var(--ink-soft);
  line-height: 1.95;
}
.footer__contact a {
  color: var(--ink-soft);
  text-decoration: none;
  transition: color 0.3s;
}
.footer__contact a:hover { color: var(--gold); }

.footer__bottom {
  position: relative;
  z-index: 1;
  text-align: center;
  font-size: 0.68rem;
  letter-spacing: 0.32em;
  color: var(--ink-dim);
  text-transform: uppercase;
}

.footer__bottom strong {
  color: var(--gold);
  font-weight: 500;
  margin: 0 0.5em;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .nav__links { gap: 1.6rem; }
  .nav__links a { font-size: 0.7rem; letter-spacing: 0.22em; }
}

@media (max-width: 900px) {
  .nav__links { display: none; }
  .nav__cta { display: none; }
  .nav__toggle { display: block; }
  .brand__sub { display: none; }
  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
  .footer__brand { grid-column: 1 / 3; }

  /* Mobile slide-down menu panel */
  .nav { position: relative; }
  .nav--open .nav__links {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 110px;
    left: 0;
    right: 0;
    width: 100vw;
    box-sizing: border-box;
    background: rgba(10, 9, 7, 0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid rgba(201, 165, 92, 0.18);
    border-bottom: 1px solid rgba(201, 165, 92, 0.18);
    padding: 1.5rem 2rem 2rem;
    gap: 0;
    list-style: none;
    margin: 0;
    z-index: 90;
    animation: navSlideDown 0.32s var(--ease-out);
  }
  .nav--open .nav__links li {
    border-bottom: 1px solid rgba(201, 165, 92, 0.08);
    width: 100%;
    text-align: left;
  }
  .nav--open .nav__links li:last-child { border-bottom: 0; }
  .nav--open .nav__links a {
    display: block;
    padding: 1.1rem 0;
    font-size: 1rem;
    letter-spacing: 0.18em;
    color: rgba(255, 255, 255, 0.88);
    text-align: left;
  }
  .nav--open .nav__links a::after { display: none; }
  .nav--open .nav__links a.is-active { color: var(--gold); }
  .nav__toggle {
    transition: transform 0.3s var(--ease-out);
  }
  .nav--open .nav__toggle {
    transform: rotate(90deg);
    background: rgba(201, 165, 92, 0.18);
  }
  body.nav-locked { overflow: hidden; }
}
@keyframes navSlideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Mobile: shrink FAB & tuck into corner so they don't cover content */
@media (max-width: 600px) {
  .fab-group {
    right: 0.9rem;
    bottom: 0.9rem;
    gap: 0.5rem;
  }
  .fab { width: 42px; height: 42px; }
  .fab svg { width: 17px; height: 17px; }
}

@media (max-width: 600px) {
  .site-header { height: 64px; }
  .brand__name { font-size: 0.95rem; letter-spacing: 0.22em; }
  .brand__mark { width: 32px; height: 32px; }
  .footer__grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .footer__brand { grid-column: 1; }
  .page-hero { padding: 130px 0 70px; min-height: 45vh; }
  .nav--open .nav__links { top: 64px; }
}

/* ============================================================
   STAR FIELD (used as background flair)
   ============================================================ */
.star {
  position: absolute;
  background: white;
  border-radius: 50%;
  opacity: 0.6;
  animation: twinkle linear infinite;
}

@keyframes twinkle {
  0%, 100% { opacity: 0.15; }
  50% { opacity: 0.85; }
}