/* ============================================
   邱强斌的个人网站 — www.qiuqiangbin.com
   配色：夜空黑 #0A1628 × 深湖蓝 #1B3A5C × 幻彩青 #00B4D8 × 山峦金 #E9C46A
   ============================================ */

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

:root {
  --night: #0A1628;
  --deep-lake: #1B3A5C;
  --cyan: #00B4D8;
  --cyan-light: #48CAE4;
  --gold: #E9C46A;
  --gold-light: #F4D58D;
  --mist: #F4F7F5;
  --rock: #6B7280;
  --rock-light: #9CA3AF;
  --white: #FFFFFF;
  --card-bg: #FFFFFF;
  --section-alt: #F8FAF9;
  --border: #E5E7EB;
  --shadow-sm: 0 1px 3px rgba(10,22,40,0.06);
  --shadow-md: 0 4px 20px rgba(10,22,40,0.08);
  --shadow-lg: 0 10px 40px rgba(10,22,40,0.12);
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 20px;
  --font-serif: 'Georgia', 'Times New Roman', 'Noto Serif SC', serif;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --max-w: 1100px;
  --nav-h: 72px;
}

html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-sans);
  color: #1F2937;
  background: var(--white);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--cyan); text-decoration: none; transition: color 0.2s; }
a:hover { color: #0096C7; }

img { max-width: 100%; height: auto; display: block; }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }

/* === Typography === */
.section-title {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--night);
  margin-bottom: 0.4rem;
  letter-spacing: 0.02em;
}
.section-subtitle {
  font-size: 1.1rem;
  color: var(--rock);
  font-weight: 400;
  margin-bottom: 3rem;
}

/* === Navigation === */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  transition: box-shadow 0.3s;
}
.navbar.scrolled { box-shadow: var(--shadow-sm); }
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-brand {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--night);
  letter-spacing: 0.03em;
}
.nav-brand span { color: var(--cyan); }
.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  font-size: 0.95rem;
  color: var(--rock);
  font-weight: 500;
  padding: 0.3rem 0;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
.nav-links a:hover,
.nav-links a.active { color: var(--night); border-bottom-color: var(--cyan); }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--night); margin: 5px 0; transition: 0.3s; }

/* === Hero === */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(160deg, #0A1628 0%, #0F2040 25%, #132A4A 50%, #0D1F38 75%, #0A1628 100%);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 20% 50%, rgba(0,180,216,0.08) 0%, transparent 50%),
    radial-gradient(ellipse 60% 40% at 80% 30%, rgba(233,196,106,0.06) 0%, transparent 50%),
    radial-gradient(ellipse 50% 60% at 50% 80%, rgba(72,202,228,0.05) 0%, transparent 50%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg viewBox='0 0 1200 800' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  opacity: 0.6;
  pointer-events: none;
}
/* Mountain silhouette SVG overlay */
.hero-mountains {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 30%;
  pointer-events: none;
  opacity: 0.12;
}
.hero-content {
  position: relative;
  z-index: 2;
  padding: 0 24px;
}
.hero-content h1 {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
  line-height: 1.15;
}
.hero-content h1 .dot {
  color: var(--gold);
}
.hero-content .hero-sub {
  font-size: clamp(1rem, 2.5vw, 1.3rem);
  color: rgba(255,255,255,0.7);
  font-weight: 300;
  letter-spacing: 0.08em;
  margin-bottom: 2.5rem;
  line-height: 1.6;
}
.hero-divider {
  width: 60px; height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--gold));
  margin: 0 auto 2.5rem;
  border-radius: 1px;
}
.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  animation: bounce 2s infinite;
}
.hero-scroll svg { width: 28px; height: 28px; stroke: rgba(255,255,255,0.5); }

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
  40% { transform: translateX(-50%) translateY(-10px); }
  60% { transform: translateX(-50%) translateY(-5px); }
}

/* === Section Common === */
.section { padding: 5rem 0; }
.section-alt { background: var(--section-alt); }

/* === Home Achievement Cards === */
.achievement-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}
.achievement-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.8rem 2rem;
  transition: transform 0.25s, box-shadow 0.25s;
  position: relative;
  overflow: hidden;
}
.achievement-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 100%;
  background: linear-gradient(180deg, var(--cyan), var(--gold));
  opacity: 0;
  transition: opacity 0.25s;
}
.achievement-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.achievement-card:hover::before { opacity: 1; }
.achievement-card .card-icon {
  font-size: 1.8rem;
  margin-bottom: 0.8rem;
}
.achievement-card h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--night);
  margin-bottom: 0.6rem;
}
.achievement-card p {
  font-size: 0.95rem;
  color: var(--rock);
  line-height: 1.7;
}

/* Timeline list (used in home achievements) */
.timeline-list {
  list-style: none;
  padding: 0;
}
.timeline-list li {
  position: relative;
  padding: 0.8rem 0 0.8rem 1.8rem;
  border-left: 2px solid var(--border);
  color: var(--rock);
  font-size: 0.95rem;
}
.timeline-list li::before {
  content: '';
  position: absolute;
  left: -5px;
  top: 1.05rem;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--cyan);
}

/* === Three-column highlight (Home) === */
.highlight-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}
.highlight-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  text-align: center;
  border: 1px solid var(--border);
  transition: transform 0.25s, box-shadow 0.25s;
}
.highlight-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.highlight-card .hl-icon {
  width: 64px; height: 64px;
  margin: 0 auto 1.2rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
}
.highlight-card .hl-icon.tech { background: rgba(0,180,216,0.1); }
.highlight-card .hl-icon.biz { background: rgba(233,196,106,0.15); }
.highlight-card .hl-icon.photo { background: rgba(72,202,228,0.1); }
.highlight-card h3 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--night);
  margin-bottom: 0.6rem;
}
.highlight-card p {
  font-size: 0.9rem;
  color: var(--rock);
  line-height: 1.7;
}

/* === Quote Block === */
.quote-block {
  background: linear-gradient(135deg, var(--night), var(--deep-lake));
  color: var(--white);
  text-align: center;
  padding: 3.5rem 2rem;
  border-radius: var(--radius-lg);
  margin-top: 2rem;
  position: relative;
  overflow: hidden;
}
.quote-block::before {
  content: '"';
  position: absolute;
  top: -10px; left: 20px;
  font-family: var(--font-serif);
  font-size: 8rem;
  color: rgba(255,255,255,0.05);
  line-height: 1;
}
.quote-block .quote-text {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  line-height: 1.8;
  font-style: italic;
  margin-bottom: 1rem;
}
.quote-block .quote-author {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.5);
}

/* === CTA Link === */
.cta-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--cyan);
  font-weight: 600;
  font-size: 0.95rem;
  transition: gap 0.2s, color 0.2s;
}
.cta-link:hover { gap: 0.8rem; color: #0096C7; }
.cta-link::after { content: '→'; font-size: 1.1rem; }

/* === About Page === */
.about-hero {
  background: linear-gradient(160deg, var(--night), var(--deep-lake));
  padding: 8rem 0 5rem;
  text-align: center;
  color: var(--white);
}
.about-hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3.2rem);
  margin-bottom: 0.8rem;
}
.about-hero .about-sub {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.65);
  max-width: 600px;
  margin: 0 auto;
}

.about-content { max-width: 800px; margin: 0 auto; }
.about-content p {
  font-size: 1.05rem;
  color: #374151;
  line-height: 2;
  margin-bottom: 1.5rem;
}
.about-content p.lead {
  font-size: 1.2rem;
  color: var(--night);
  font-weight: 500;
  line-height: 1.9;
}

/* Info table style */
.info-table {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 2rem 0;
}
.info-row {
  display: contents;
}
.info-row dt, .info-row dd {
  padding: 1rem 1.5rem;
  font-size: 0.95rem;
}
.info-row dt {
  background: var(--section-alt);
  color: var(--rock);
  font-weight: 500;
}
.info-row dd {
  color: #374151;
  border-bottom: 1px solid var(--border);
}
.info-row:last-child dd { border-bottom: none; }

/* Values grid */
.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}
.value-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
}
.value-card .val-icon {
  font-size: 2rem;
  margin-bottom: 0.8rem;
}
.value-card h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--night);
  margin-bottom: 0.6rem;
}
.value-card p { font-size: 0.9rem; color: var(--rock); line-height: 1.7; }

/* === Career Page === */
.career-hero {
  background: linear-gradient(160deg, var(--night), var(--deep-lake));
  padding: 8rem 0 5rem;
  text-align: center;
  color: var(--white);
}
.career-hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3.2rem);
  margin-bottom: 0.8rem;
}
.career-hero .career-sub {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.65);
}

.career-timeline { max-width: 800px; margin: 0 auto; }
.career-phase {
  margin-bottom: 3rem;
}
.career-phase-title {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--night);
  padding-bottom: 0.6rem;
  border-bottom: 2px solid var(--cyan);
  margin-bottom: 1.5rem;
}
.career-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  margin-bottom: 1.5rem;
  position: relative;
}
.career-item::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 40px;
  background: var(--cyan);
  border-radius: 0 0 4px 0;
}
.career-item h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--night);
  margin-bottom: 0.3rem;
}
.career-item .role {
  font-size: 0.9rem;
  color: var(--cyan);
  font-weight: 600;
  margin-bottom: 1rem;
}
.career-item p {
  font-size: 0.95rem;
  color: #4B5563;
  line-height: 1.8;
  margin-bottom: 0.8rem;
}
.career-item .project-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gold);
  margin-bottom: 0.6rem;
}

/* Honor list */
.honor-list {
  list-style: none;
  padding: 0;
  margin-top: 1rem;
}
.honor-list li {
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
  color: #4B5563;
}
.honor-list li:last-child { border-bottom: none; }
.honor-list li .year {
  display: inline-block;
  background: rgba(0,180,216,0.1);
  color: var(--cyan);
  font-weight: 700;
  padding: 0.15rem 0.6rem;
  border-radius: 4px;
  margin-right: 0.8rem;
  font-size: 0.85rem;
}

/* Org table */
.org-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.95rem;
}
.org-table th, .org-table td {
  padding: 1rem 1.5rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.org-table th {
  background: var(--section-alt);
  color: var(--rock);
  font-weight: 500;
  font-size: 0.85rem;
  text-transform: uppercase;
}
.org-table td { color: #4B5563; }

/* === Gallery Page === */
.gallery-hero {
  background: linear-gradient(160deg, var(--night), var(--deep-lake));
  padding: 8rem 0 5rem;
  text-align: center;
  color: var(--white);
}
.gallery-hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3.2rem);
  margin-bottom: 0.8rem;
}
.gallery-hero .gallery-sub {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.65);
}
.gallery-intro {
  max-width: 700px;
  margin: 0 auto 3rem;
  font-size: 1.05rem;
  color: #4B5563;
  line-height: 1.9;
  text-align: center;
}

.series-section {
  margin-bottom: 4rem;
}
.series-header {
  text-align: center;
  margin-bottom: 2rem;
}
.series-header .series-quote {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--rock);
  font-style: italic;
  margin-bottom: 0.5rem;
}
.series-header h2 {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--night);
}
.series-desc {
  max-width: 650px;
  margin: 0 auto 1.5rem;
  font-size: 0.95rem;
  color: var(--rock);
  line-height: 1.8;
  text-align: center;
}
.series-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1rem;
}
.series-item {
  aspect-ratio: 4/3;
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  cursor: pointer;
}
.series-item img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}
.series-item:hover img { transform: scale(1.05); }
.series-item .overlay {
  position: absolute;
  inset: 0;
  background: rgba(10,22,40,0.45);
  opacity: 0;
  transition: opacity 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
}
.series-item:hover .overlay { opacity: 1; }
.series-item .overlay span {
  color: white;
  font-size: 0.9rem;
  font-weight: 500;
  border: 1px solid rgba(255,255,255,0.5);
  padding: 0.5rem 1.2rem;
  border-radius: 20px;
}

.photo-cv { margin-top: 4rem; }
.photo-cv h3 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--night);
  margin-bottom: 1rem;
}

/* === Blog Page === */
.blog-hero {
  background: linear-gradient(160deg, var(--night), var(--deep-lake));
  padding: 8rem 0 5rem;
  text-align: center;
  color: var(--white);
}
.blog-hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3.2rem);
  margin-bottom: 0.8rem;
}
.blog-hero .blog-sub {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.65);
}
.blog-intro {
  max-width: 700px;
  margin: 0 auto 3rem;
  font-size: 1.05rem;
  color: #4B5563;
  line-height: 1.9;
  text-align: center;
}

.column-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  margin-bottom: 1.5rem;
  transition: transform 0.25s, box-shadow 0.25s;
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}
.column-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}
.column-card .col-icon {
  font-size: 2.2rem;
  flex-shrink: 0;
  width: 56px; height: 56px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}
.column-card .col-icon.c1 { background: rgba(0,180,216,0.1); }
.column-card .col-icon.c2 { background: rgba(233,196,106,0.15); }
.column-card .col-icon.c3 { background: rgba(72,202,228,0.1); }
.column-card .col-body h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--night);
  margin-bottom: 0.6rem;
}
.column-card .col-body p {
  font-size: 0.9rem;
  color: var(--rock);
  line-height: 1.7;
}
.column-card .col-body .coming-soon {
  display: inline-block;
  margin-top: 0.8rem;
  font-size: 0.8rem;
  color: var(--gold);
  font-weight: 600;
  background: rgba(233,196,106,0.1);
  padding: 0.25rem 0.8rem;
  border-radius: 20px;
}

/* === Contact Page === */
.contact-hero {
  background: linear-gradient(160deg, var(--night), var(--deep-lake));
  padding: 8rem 0 5rem;
  text-align: center;
  color: var(--white);
}
.contact-hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3.2rem);
  margin-bottom: 0.8rem;
}
.contact-hero .contact-sub {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.65);
}
.contact-content { max-width: 700px; margin: 0 auto; }
.contact-content .notice {
  background: rgba(0,180,216,0.06);
  border-left: 4px solid var(--cyan);
  padding: 1.5rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 2rem;
  font-size: 0.95rem;
  color: #4B5563;
}
.contact-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0;
}
.contact-list li {
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
  color: #4B5563;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.contact-list li:last-child { border-bottom: none; }
.contact-list li .dot { color: var(--cyan); font-weight: bold; }

.contact-detail {
  margin-top: 2rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
}
.contact-detail dt {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--rock);
  margin-bottom: 0.3rem;
}
.contact-detail dd {
  font-size: 1.05rem;
  color: var(--night);
  font-weight: 500;
  margin-bottom: 1.2rem;
}
.contact-detail dd:last-child { margin-bottom: 0; }

.disclaimer {
  margin-top: 2rem;
  padding: 1.5rem;
  background: var(--section-alt);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--rock);
  line-height: 1.7;
}

/* === Footer === */
.site-footer {
  background: var(--night);
  color: rgba(255,255,255,0.6);
  padding: 3rem 0 2rem;
  font-size: 0.9rem;
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
}
.footer-nav {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.footer-nav a {
  color: rgba(255,255,255,0.5);
  font-size: 0.9rem;
  transition: color 0.2s;
}
.footer-nav a:hover { color: var(--cyan); }
.footer-copy { color: rgba(255,255,255,0.35); }

/* === Responsive === */
@media (max-width: 768px) {
  :root { --nav-h: 60px; }

  .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(16px);
    flex-direction: column;
    gap: 0;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
    transform: translateY(-110%);
    transition: transform 0.3s;
    box-shadow: var(--shadow-md);
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a {
    display: block;
    padding: 0.8rem 2rem;
    border-bottom: none;
  }
  .nav-toggle { display: block; }

  .hero { min-height: 80vh; }
  .hero-content h1 { font-size: 2.8rem; }

  .section { padding: 3rem 0; }
  .section-title { font-size: 1.7rem; }

  .info-table { grid-template-columns: 1fr; }
  .info-row { display: block; border-bottom: 1px solid var(--border); }
  .info-row:last-child { border-bottom: none; }
  .info-row dt { background: none; padding-bottom: 0.2rem; }
  .info-row dd { border-bottom: none; padding-top: 0.2rem; }

  .column-card { flex-direction: column; padding: 1.8rem; }

  .footer-inner { flex-direction: column; text-align: center; }
  .footer-nav { justify-content: center; }
}

@media (max-width: 480px) {
  .hero-content h1 { font-size: 2.2rem; }
  .achievement-grid, .highlight-grid, .values-grid { grid-template-columns: 1fr; }
  .series-grid { grid-template-columns: 1fr 1fr; }
}