@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@300;400;500;600;700&family=Syne:wght@400;500;600;700&display=swap');

/* =====================================================
   CSS 自定义属性
   ===================================================== */
:root {
  --color-bg: #0D0D1A;
  --color-gold: #C8A96E;
  --color-light: #E8E8F0;
  --color-bg2: #131325;
  --color-bg3: #1a1a30;
  --color-glass: rgba(232,232,240,0.05);
  --color-glass-border: rgba(200,169,110,0.18);
  --color-gold-dim: rgba(200,169,110,0.6);
  --color-text: #E8E8F0;
  --color-text-muted: rgba(232,232,240,0.55);
  --color-accent: #C8A96E;
  --font-display: 'Syne', system-ui, sans-serif;
  --font-body: 'Manrope', system-ui, sans-serif;
  --radius-card: 4px;
  --header-h: 64px;
  --max-content: 780px;
  --max-wide: 1200px;
  --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* =====================================================
   Reset & Base
   ===================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: var(--color-gold); text-decoration: none; transition: color var(--transition-base), opacity var(--transition-base); }
a:hover { color: var(--color-light); opacity: 0.9; }
img { display: block; max-width: 100%; height: auto; }
ul, ol { list-style: none; }
address { font-style: normal; }

/* =====================================================
   Typography
   ===================================================== */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  color: var(--color-light);
}

h1 { font-size: clamp(2rem, 6vw, 4rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.4rem, 3.5vw, 2.2rem); letter-spacing: -0.01em; }
h3 { font-size: clamp(1.1rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.05rem; }

p { margin-bottom: 1.1em; }

small.eyebrow-label {
  display: block;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 0.4em;
}

/* =====================================================
   Layout: site-root
   ===================================================== */
.site-root {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* =====================================================
   Header
   ===================================================== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(13,13,26,0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-glass-border);
}

.header-inner {
  max-width: var(--max-wide);
  margin: 0 auto;
  height: 100%;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.brand-mark {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1.5px solid var(--color-gold);
  border-radius: 50%;
  overflow: hidden;
  color: var(--color-gold);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.8rem;
  transition: border-color var(--transition-base);
}

.brand-mark:hover { border-color: var(--color-light); color: var(--color-light); }

.brand-icon-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: inherit;
}

.brand-logo-icon { width: 36px; height: 36px; object-fit: cover; border-radius: 50%; }

.main-nav {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 0.15rem;
  overflow-x: auto;
  scrollbar-width: none;
}
.main-nav::-webkit-scrollbar { display: none; }

.nav-link {
  flex-shrink: 0;
  padding: 0.55rem 0.75rem;
  font-family: var(--font-body);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-text-muted);
  border-bottom: 2px solid transparent;
  transition: color var(--transition-base), border-color var(--transition-base);
  white-space: nowrap;
  min-height: 40px;
  display: flex;
  align-items: center;
}

.nav-link:hover, .nav-link.active {
  color: var(--color-gold);
  border-bottom-color: var(--color-gold);
  opacity: 1;
}

.header-cta {
  flex-shrink: 0;
  padding: 0.55rem 1.2rem;
  background: var(--color-gold);
  color: var(--color-bg);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  border-radius: var(--radius-card);
  min-height: 40px;
  display: flex;
  align-items: center;
  transition: background var(--transition-base), color var(--transition-base);
}

.header-cta:hover { background: var(--color-light); color: var(--color-bg); opacity: 1; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-card);
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-gold);
  border-radius: 1px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

/* =====================================================
   Hero
   ===================================================== */
.hero, .page-hero {
  position: relative;
  margin-top: var(--header-h);
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
}

.page-hero-slim {
  min-height: 38vh;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: linear-gradient(135deg, #0D0D1A 0%, #1a1030 55%, #0d1a2a 100%);
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.35;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(13,13,26,0.3) 0%, rgba(13,13,26,0.75) 70%, rgba(13,13,26,0.97) 100%);
}

.hero-slash {
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 80px;
  background: var(--color-bg);
  clip-path: polygon(0 60%, 100% 0%, 100% 100%, 0% 100%);
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  padding: 4rem 2rem 5rem;
  max-width: var(--max-wide);
  margin: 0 auto;
  width: 100%;
}

.hero-content-left { text-align: left; }

.hero-home .hero-content { padding-bottom: 7rem; }

.hero-eyebrow {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 1rem;
}

.hero-h1 {
  font-size: clamp(2.4rem, 7vw, 5rem);
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-light) 0%, var(--color-gold) 60%, var(--color-light) 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1.2rem;
  animation: gradientShift 6s linear infinite;
}

.page-h1 {
  font-size: clamp(1.8rem, 5vw, 3.4rem);
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-light) 0%, var(--color-gold) 60%, var(--color-light) 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.8rem;
  animation: gradientShift 6s linear infinite;
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--color-text-muted);
  max-width: 560px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-content-left .hero-sub { margin-left: 0; }
.hero-content-left .hero-actions { justify-content: flex-start; }

.page-date {
  font-size: 0.82rem;
  color: var(--color-gold-dim);
  letter-spacing: 0.05em;
  display: block;
  margin-top: 0.5rem;
}

/* Marquee */
.marquee-bar {
  position: absolute;
  bottom: 84px;
  left: 0;
  right: 0;
  z-index: 4;
  overflow: hidden;
  border-top: 1px solid var(--color-glass-border);
  border-bottom: 1px solid var(--color-glass-border);
  background: rgba(13,13,26,0.6);
  padding: 0.45rem 0;
}

.marquee-track {
  display: flex;
  gap: 3rem;
  width: max-content;
  animation: marqueeScroll 22s linear infinite;
}

.marquee-track span {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-gold);
  white-space: nowrap;
}

/* Anchors bar */
.anchors-bar {
  position: sticky;
  top: var(--header-h);
  z-index: 80;
  background: var(--color-bg2);
  border-bottom: 1px solid var(--color-glass-border);
}

.anchors-inner {
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  gap: 0.25rem;
  overflow-x: auto;
  scrollbar-width: none;
}
.anchors-inner::-webkit-scrollbar { display: none; }

.anchors-inner a {
  flex-shrink: 0;
  padding: 0.65rem 1rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-muted);
  border-bottom: 2px solid transparent;
  transition: color var(--transition-base), border-color var(--transition-base);
  min-height: 40px;
  display: flex;
  align-items: center;
}
.anchors-inner a:hover { color: var(--color-gold); border-bottom-color: var(--color-gold); opacity: 1; }

/* =====================================================
   Buttons
   ===================================================== */
.btn-primary {
  padding: 0.75rem 2rem;
  background: var(--color-gold);
  color: var(--color-bg);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  border-radius: var(--radius-card);
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  transition: background var(--transition-base), transform var(--transition-base);
}
.btn-primary:hover { background: var(--color-light); color: var(--color-bg); transform: translateY(-2px); opacity: 1; }

.btn-ghost {
  padding: 0.75rem 2rem;
  background: transparent;
  color: var(--color-gold);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  border: 1.5px solid var(--color-gold);
  border-radius: var(--radius-card);
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  transition: background var(--transition-base), color var(--transition-base), transform var(--transition-base);
}
.btn-ghost:hover { background: var(--color-gold); color: var(--color-bg); transform: translateY(-2px); opacity: 1; }

/* =====================================================
   Main layout
   ===================================================== */
.page-main {
  flex: 1;
  display: flex;
  align-items: flex-start;
  max-width: var(--max-wide);
  margin: 0 auto;
  width: 100%;
  padding: 3rem 1.5rem 4rem;
  gap: 2.5rem;
}

.page-main .wrap {
  flex: 1;
  min-width: 0;
}

/* =====================================================
   Glass Cards
   ===================================================== */
.glass-card {
  background: var(--color-glass);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-card);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  overflow: hidden;
  transition: border-color var(--transition-base), transform var(--transition-base);
}
.glass-card:hover { border-color: var(--color-gold-dim); transform: translateY(-3px); }

.glass-card-h {
  display: flex;
  flex-direction: row;
}

.card-img-wrap { overflow: hidden; flex-shrink: 0; }
.card-img-wrap img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.glass-card:hover .card-img-wrap img { transform: scale(1.04); }

.card-body {
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
}

.card-date {
  font-size: 0.75rem;
  color: var(--color-gold-dim);
  letter-spacing: 0.06em;
}

.card-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-light);
}
.card-title a { color: inherit; }
.card-title a:hover { color: var(--color-gold); opacity: 1; }

.card-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 0;
  flex: 1;
}

.card-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.78rem;
  font-weight: 600;
  font-family: var(--font-display);
  letter-spacing: 0.08em;
  color: var(--color-gold);
  margin-top: auto;
  padding-top: 0.5rem;
  border-top: 1px solid var(--color-glass-border);
  transition: color var(--transition-base);
  min-height: 40px;
}
.card-cta:hover { color: var(--color-light); opacity: 1; }

/* Cards row grid */
.cards-row {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.2rem;
  margin-top: 1.5rem;
}

/* =====================================================
   Content Section / Prose
   ===================================================== */
.content-section {
  margin-bottom: 3rem;
}

.prose-content {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text);
}

.prose-content h2 {
  font-size: clamp(1.2rem, 3vw, 1.7rem);
  margin: 2.2rem 0 0.8rem;
  color: var(--color-gold);
}

.prose-content h3 {
  font-size: clamp(1rem, 2.2vw, 1.3rem);
  margin: 1.8rem 0 0.6rem;
  color: var(--color-light);
}

.prose-content h4 {
  font-size: 1.05rem;
  margin: 1.4rem 0 0.5rem;
  color: var(--color-light);
}

.prose-content p { margin-bottom: 1.1em; }

.prose-content ul, .prose-content ol {
  margin: 0.8em 0 1em 1.4em;
  list-style: disc;
}

.prose-content ol { list-style: decimal; }

.prose-content li { margin-bottom: 0.4em; }

.prose-content strong { color: var(--color-gold); font-weight: 700; }

.prose-content em { color: var(--color-light); font-style: italic; }

.prose-content blockquote {
  border-left: 3px solid var(--color-gold);
  margin: 1.5em 0;
  padding: 0.8em 1.2em;
  background: var(--color-glass);
  border-radius: 0 var(--radius-card) var(--radius-card) 0;
  color: var(--color-text-muted);
}

.prose-content a {
  color: var(--color-gold);
  text-decoration: underline;
  text-decoration-color: var(--color-gold-dim);
}
.prose-content a:hover { color: var(--color-light); opacity: 1; }

.prose-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: 0.9rem;
}

.prose-content th, .prose-content td {
  padding: 0.6em 0.9em;
  border: 1px solid var(--color-glass-border);
  text-align: left;
}

.prose-content th {
  background: var(--color-glass);
  color: var(--color-gold);
  font-family: var(--font-display);
  font-weight: 700;
}

.prose-content tr:nth-child(even) td { background: rgba(232,232,240,0.02); }

.meta-row {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 1.8rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-glass-border);
}

.meta-label {
  color: var(--color-gold-dim);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-right: 0.4em;
}

/* =====================================================
   Section Titles
   ===================================================== */
.section-title {
  font-size: clamp(1.3rem, 3vw, 1.9rem);
  margin-bottom: 1.5rem;
  color: var(--color-light);
}

/* =====================================================
   Home specific
   ===================================================== */
.home-featured, .home-ranking, .home-children {
  margin-bottom: 3.5rem;
}

.ranking-preview {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1rem;
}

.ranking-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.2rem;
  background: var(--color-glass);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-card);
  color: var(--color-light);
  font-family: var(--font-body);
  font-weight: 500;
  transition: border-color var(--transition-base), transform var(--transition-base);
  min-height: 52px;
}

.ranking-link:hover { border-color: var(--color-gold); transform: translateX(4px); color: var(--color-gold); opacity: 1; }

.ranking-arrow {
  color: var(--color-gold);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  transition: transform var(--transition-base);
}
.ranking-link:hover .ranking-arrow { transform: translateX(4px); }

.ranking-label { font-size: 0.9rem; }

/* =====================================================
   Aside
   ===================================================== */
.page-aside {
  width: 260px;
  flex-shrink: 0;
  position: sticky;
  top: calc(var(--header-h) + 1.5rem);
  align-self: flex-start;
  display: flex;
  flex-direction: column;
}

.aside-inner {
  padding: 1.2rem 1.4rem;
}

.aside-inner h3 {
  font-size: 0.95rem;
  color: var(--color-light);
  margin-bottom: 0.8rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-glass-border);
}

.aside-links {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.aside-links li a {
  display: block;
  padding: 0.5rem 0.6rem;
  font-size: 0.83rem;
  color: var(--color-text-muted);
  border-radius: 2px;
  transition: color var(--transition-base), background var(--transition-base);
  min-height: 40px;
  display: flex;
  align-items: center;
}
.aside-links li a:hover { color: var(--color-gold); background: var(--color-glass); opacity: 1; }

/* =====================================================
   Related / Sub sections
   ===================================================== */
.related-section, .compare-cards-section, .ranking-related,
.faq-related, .about-links-section {
  margin-bottom: 2.5rem;
}

.related-section h2, .compare-cards-section h2, .ranking-related h2,
.faq-related h2, .about-links-section h2 {
  margin-bottom: 1.2rem;
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
}

.glass-card-h .card-body { padding: 1rem 1.25rem; }

/* =====================================================
   Footer
   ===================================================== */
.site-footer {
  background: var(--color-bg2);
  border-top: 1px solid var(--color-glass-border);
  padding: 0;
}

.footer-contact-bar {
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: 1.8rem 1.5rem 1.2rem;
  display: flex;
  align-items: flex-start;
  gap: 2rem;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--color-glass-border);
}

.footer-address {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.footer-address span {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--color-gold);
  font-size: 0.9rem;
}

.footer-address a {
  color: var(--color-text-muted);
  font-size: 0.82rem;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
}
.footer-address a:hover { color: var(--color-gold); opacity: 1; }

.footer-quick {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-wrap: wrap;
  margin-left: auto;
}

.footer-quick li a {
  padding: 0.45rem 0.8rem;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  border: 1px solid var(--color-glass-border);
  border-radius: 2px;
  transition: border-color var(--transition-base), color var(--transition-base);
  min-height: 40px;
  display: inline-flex;
  align-items: center;
}
.footer-quick li a:hover { border-color: var(--color-gold); color: var(--color-gold); opacity: 1; }

.footer-nav {
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: 1.5rem 1.5rem 0.5rem;
}

.footer-dl {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 0.1rem;
  align-items: center;
}

.footer-dl-head {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-gold-dim);
  margin-right: 0.8rem;
  white-space: nowrap;
}

.footer-dl dt a, .footer-dl dd a {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.7rem;
  font-size: 0.78rem;
  color: var(--color-text-muted);
  border-radius: 2px;
  transition: color var(--transition-base);
  min-height: 40px;
}
.footer-dl dt a:hover, .footer-dl dd a:hover { color: var(--color-gold); opacity: 1; }

.footer-bottom {
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: 1rem 1.5rem 1.5rem;
  border-top: 1px solid var(--color-glass-border);
  margin-top: 0.75rem;
}

.copyright {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  text-align: center;
  line-height: 1.6;
  margin-bottom: 0;
}

/* =====================================================
   Kinetic / Animation
   ===================================================== */
@keyframes gradientShift {
  0%   { background-position: 0% center; }
  50%  { background-position: 100% center; }
  100% { background-position: 0% center; }
}

@keyframes marqueeScroll {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.kinetic-fade {
  animation: fadeIn 0.8s ease both;
}

.kinetic-title {
  animation: fadeSlideUp 0.9s cubic-bezier(0.22,1,0.36,1) 0.1s both;
}

.kinetic-sub {
  animation: fadeSlideUp 0.9s cubic-bezier(0.22,1,0.36,1) 0.25s both;
}

/* Stagger list reveal via Intersection Observer (app.js handles class) */
.stagger-item {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.stagger-item.visible {
  opacity: 1;
  transform: translateY(0);
}

/* =====================================================
   prefers-reduced-motion
   ===================================================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .marquee-track { animation: none; }
  .stagger-item { opacity: 1; transform: none; transition: none; }
}

/* =====================================================
   Responsive — Tablet
   ===================================================== */
@media (max-width: 900px) {
  .page-main {
    flex-direction: column;
  }

  .page-aside {
    width: 100%;
    position: static;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }

  .page-aside .aside-inner { margin-top: 0 !important; }

  .cards-row {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  }

  .footer-quick { margin-left: 0; }
}

/* =====================================================
   Responsive — Mobile
   ===================================================== */
@media (max-width: 640px) {
  :root { --header-h: 56px; }

  .main-nav { display: none; }
  .main-nav.open { display: flex; flex-direction: column; align-items: flex-start; position: fixed; top: var(--header-h); left: 0; right: 0; background: var(--color-bg2); padding: 1rem 1.5rem 1.5rem; border-bottom: 1px solid var(--color-glass-border); z-index: 99; gap: 0.1rem; }
  .main-nav.open .nav-link { width: 100%; padding: 0.7rem 0.5rem; }

  .nav-toggle { display: flex; }
  .header-cta { display: none; }

  .hero, .page-hero { min-height: 60vh; }
  .page-hero-slim { min-height: 30vh; }

  .hero-content { padding: 2rem 1.2rem 5rem; }

  .hero-actions { flex-direction: column; align-items: center; }
  .hero-content-left .hero-actions { align-items: flex-start; }

  .page-main { padding: 2rem 1rem 3rem; gap: 2rem; }

  .page-aside { grid-template-columns: 1fr; }

  .glass-card-h { flex-direction: column; }

  .cards-row { grid-template-columns: 1fr; }

  .footer-contact-bar { flex-direction: column; gap: 1rem; }
  .footer-quick { margin-left: 0; }
  .footer-dl { gap: 0.2rem; }

  .anchors-bar { overflow-x: auto; }
  .anchors-inner { gap: 0; }

  .marquee-bar { bottom: 68px; }

  .hero-h1 { font-size: clamp(1.9rem, 9vw, 3rem); }
  .page-h1 { font-size: clamp(1.5rem, 7vw, 2.5rem); }

  h2 { font-size: clamp(1.2rem, 5vw, 1.6rem); }
}

/* =====================================================
   Utility
   ===================================================== */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}