/* ===== Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px;line-height:1.6;-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','Helvetica Neue',Arial,sans-serif;color:#1A1A2E;background:#F5F5F5;min-height:100vh;overflow-x:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button{cursor:pointer;font:inherit;border:none;background:none}
:focus-visible{outline:3px solid #FF6F00;outline-offset:3px;border-radius:4px}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:0.01ms!important;animation-iteration-count:1!important;transition-duration:0.01ms!important;scroll-behavior:auto!important}}

/* ===== CSS Variables ===== */
:root{
  --clr-primary-orange:#FF6F00;
  --clr-primary-blue:#003D6B;
  --clr-accent-yellow:#C7D700;
  --clr-bg-light:#F5F5F5;
  --clr-bg-dark:#1A1A2E;
  --clr-text-primary:#1A1A2E;
  --clr-text-secondary:#555555;
  --clr-card-bg:#FFFFFF;
  --clr-border-light:rgba(0,61,107,0.15);
  --gradient-cta:linear-gradient(135deg,#FF6F00 0%,#C7D700 100%);
  --gradient-hero:linear-gradient(135deg,rgba(255,111,0,0.08) 0%,rgba(199,215,0,0.05) 100%);
  --font-headings:'Impact','Arial Black','Franklin Gothic Heavy',sans-serif;
  --font-body:-apple-system,BlinkMacSystemFont,'Segoe UI','Helvetica Neue',Arial,sans-serif;
  --shadow-sm:0 2px 12px rgba(0,0,0,0.06);
  --shadow-md:0 8px 40px rgba(0,0,0,0.08);
  --shadow-lg:0 20px 60px rgba(0,0,0,0.12);
  --radius-sm:8px;
  --radius-md:16px;
  --radius-lg:50px;
  --max-width:1200px;
  --nav-height:72px;
  --section-gap:6rem;
}

/* ===== Typography ===== */
h1,h2,h3,h4,h5,h6{font-family:var(--font-headings);line-height:1.1;letter-spacing:-0.02em;color:var(--clr-text-primary)}
h1{font-size:clamp(2.8rem,8vw,5rem);margin-bottom:1rem}
h2{font-size:clamp(2rem,5vw,3.2rem);margin-bottom:0.75rem}
h3{font-size:clamp(1.4rem,3vw,2rem);margin-bottom:0.5rem}
p{font-size:1rem;line-height:1.7;color:var(--clr-text-secondary);max-width:70ch}
small,.text-small{font-size:0.875rem;color:var(--clr-text-secondary)}

/* ===== Container ===== */
.container{width:100%;max-width:var(--max-width);margin:0 auto;padding-left:24px;padding-right:24px}
@media(min-width:768px){.container{padding-left:40px;padding-right:40px}}
@media(min-width:1024px){.container{padding-left:60px;padding-right:60px}}

/* ===== Skip Link ===== */
.skip-link{position:fixed;top:-100px;left:16px;z-index:9999;padding:12px 24px;background:var(--clr-primary-blue);color:#fff;font-weight:600;border-radius:var(--radius-sm);transition:top 0.2s ease}
.skip-link:focus{top:16px}

/* ===== Scroll Progress ===== */
.scroll-progress{position:fixed;top:0;left:0;height:4px;background:var(--gradient-cta);width:0%;z-index:1100;transition:width 0.08s linear;pointer-events:none}
@media(prefers-reduced-motion:reduce){.scroll-progress{transition:none}}

/* ===== Capsule Navigation ===== */
.capsule-nav{position:fixed;top:16px;left:50%;transform:translateX(-50%);width:calc(100% - 32px);max-width:var(--max-width);z-index:1050;background:rgba(255,255,255,0.88);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border-radius:var(--radius-lg);box-shadow:0 4px 30px rgba(0,0,0,0.06),0 1px 0 rgba(255,255,255,0.8) inset;padding:0 8px;border:1px solid rgba(255,255,255,0.5)}
.capsule-nav-inner{display:flex;align-items:center;justify-content:space-between;height:var(--nav-height);padding:0 16px}
@media(min-width:768px){.capsule-nav{top:20px;width:calc(100% - 48px);padding:0 12px}.capsule-nav-inner{padding:0 12px}}

/* Brand Logo */
.brand-logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-icon{display:block;width:32px;height:32px;border-radius:50%;background:var(--gradient-cta);position:relative;box-shadow:0 2px 8px rgba(255,111,0,0.25)}
.brand-icon::after{content:'';position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:14px;height:14px;border-radius:50%;border:2px solid #fff;opacity:0.7}
.brand-text{font-family:var(--font-headings);font-size:1.5rem;color:var(--clr-primary-orange);letter-spacing:-0.02em;line-height:1}
@media(min-width:768px){.brand-text{font-size:1.65rem}}

/* Navigation Toggle (Mobile) */
.nav-toggle{display:flex;flex-direction:column;justify-content:center;gap:5px;width:40px;height:40px;padding:8px;border-radius:var(--radius-sm);background:transparent;transition:background 0.2s;margin-left:auto;margin-right:8px}
.nav-toggle:hover{background:rgba(255,111,0,0.08)}
.nav-toggle-bar{display:block;width:24px;height:2.5px;background:var(--clr-text-primary);border-radius:2px;transition:transform 0.3s ease,opacity 0.3s ease;transform-origin:center}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}
@media(min-width:768px){.nav-toggle{display:none}}

/* Nav List Wrapper */
.nav-list-wrapper{display:none;position:absolute;top:calc(var(--nav-height) + 8px);left:8px;right:8px;background:rgba(255,255,255,0.98);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border-radius:var(--radius-md);box-shadow:var(--shadow-md);padding:16px 8px;border:1px solid var(--clr-border-light)}
.nav-list-wrapper[data-open]{display:block}
.nav-list{display:flex;flex-direction:column;gap:4px}
.nav-link{display:block;padding:12px 20px;font-family:var(--font-body);font-weight:500;font-size:1rem;color:var(--clr-text-primary);border-radius:var(--radius-sm);transition:background 0.2s,color 0.2s;position:relative}
.nav-link:hover{background:rgba(255,111,0,0.08);color:var(--clr-primary-orange)}
.nav-link:focus-visible{outline:3px solid var(--clr-primary-orange);outline-offset:-3px}
.nav-link[aria-current="page"]{color:var(--clr-primary-orange);font-weight:600}
.nav-link[aria-current="page"]::after{content:'';position:absolute;bottom:6px;left:20px;right:20px;height:3px;background:var(--clr-primary-orange);border-radius:2px}
@media(min-width:768px){
  .nav-list-wrapper{display:flex!important;position:static;background:transparent;backdrop-filter:none;box-shadow:none;border:none;padding:0;width:auto}
  .nav-list{flex-direction:row;gap:2px}
  .nav-link{padding:8px 18px;font-size:0.95rem}
  .nav-link[aria-current="page"]::after{bottom:4px;left:18px;right:18px;height:2.5px}
}

/* Nav Actions */
.nav-actions{display:none;align-items:center;gap:10px;flex-shrink:0}
@media(min-width:768px){.nav-actions{display:flex}}

/* ===== Buttons ===== */
.btn-ghost{display:inline-flex;align-items:center;justify-content:center;padding:8px 18px;font-family:var(--font-body);font-weight:600;font-size:0.9rem;color:var(--clr-primary-orange);background:transparent;border:1.5px solid var(--clr-primary-orange);border-radius:var(--radius-lg);transition:background 0.25s,color 0.25s,box-shadow 0.25s;white-space:nowrap}
.btn-ghost:hover{background:var(--clr-primary-orange);color:#fff;box-shadow:0 4px 16px rgba(255,111,0,0.25)}
.btn-ghost:focus-visible{outline:3px solid var(--clr-primary-orange);outline-offset:2px}

.btn-primary{display:inline-flex;align-items:center;justify-content:center;padding:8px 22px;font-family:var(--font-body);font-weight:700;font-size:0.9rem;color:#fff;background:var(--gradient-cta);border-radius:var(--radius-lg);transition:box-shadow 0.25s,transform 0.2s;white-space:nowrap;border:none;box-shadow:0 4px 16px rgba(255,111,0,0.2)}
.btn-primary:hover{box-shadow:0 8px 28px rgba(255,111,0,0.35);transform:translateY(-1px)}
.btn-primary:focus-visible{outline:3px solid var(--clr-primary-orange);outline-offset:2px}

/* ===== Section Number ===== */
.section-number{font-family:var(--font-headings);font-size:clamp(3rem,10vw,7rem);line-height:1;color:rgba(255,111,0,0.12);user-select:none;pointer-events:none;margin-bottom:-0.3em}
.section-number + h2{margin-top:-0.2em}

/* ===== Exhibit Card ===== */
.exhibit-card{background:var(--clr-card-bg);border:1px solid var(--clr-border-light);border-radius:var(--radius-md);padding:28px 24px;box-shadow:var(--shadow-sm);transition:box-shadow 0.3s,transform 0.25s}
.exhibit-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.exhibit-card:focus-within{box-shadow:var(--shadow-md);border-color:var(--clr-primary-orange)}

/* ===== Label Card ===== */
.label-card{background:var(--clr-card-bg);border-left:4px solid var(--clr-primary-orange);padding:16px 20px;border-radius:0 var(--radius-sm) var(--radius-sm) 0;box-shadow:var(--shadow-sm);font-size:0.95rem}
.label-card .label-title{font-weight:700;color:var(--clr-text-primary);margin-bottom:4px}
.label-card .label-value{font-family:var(--font-headings);font-size:1.6rem;color:var(--clr-primary-orange)}

/* ===== Zone (Theme Section) ===== */
.zone{padding:var(--section-gap) 0}
.zone + .zone{border-top:1px solid var(--clr-border-light)}

/* ===== Image Container ===== */
.img-container{position:relative;width:100%;overflow:hidden;border-radius:var(--radius-md);background:var(--gradient-hero);aspect-ratio:16/9;display:flex;align-items:center;justify-content:center}
.img-container::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(255,111,0,0.05),rgba(199,215,0,0.03));z-index:1}
.img-container .img-placeholder{font-family:var(--font-body);font-size:0.9rem;color:var(--clr-text-secondary);opacity:0.5;z-index:2}

/* ===== Utility ===== */
.text-gradient{background:var(--gradient-cta);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.text-orange{color:var(--clr-primary-orange)}
.text-blue{color:var(--clr-primary-blue)}
.bg-dark{background:var(--clr-bg-dark);color:#fff}
.bg-dark p{color:rgba(255,255,255,0.7)}
.bg-light{background:var(--clr-bg-light)}
.bg-white{background:var(--clr-card-bg)}
.flex-row{display:flex;flex-wrap:wrap;gap:24px;align-items:center}
.grid-2{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:768px){.grid-2{grid-template-columns:1fr 1fr;gap:40px}}
.grid-3{display:grid;grid-template-columns:1fr;gap:28px}
@media(min-width:640px){.grid-3{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.grid-3{grid-template-columns:1fr 1fr 1fr;gap:32px}}
.gap-section{gap:var(--section-gap)}

/* ===== Footer ===== */
.site-footer{background:var(--clr-bg-dark);color:rgba(255,255,255,0.85);padding-top:60px;padding-bottom:0}
.footer-grid{display:grid;grid-template-columns:1fr;gap:40px}
@media(min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.footer-grid{grid-template-columns:2fr 1fr 1.5fr;gap:48px}}
.footer-brand .brand-logo{margin-bottom:16px}
.footer-brand .brand-text{color:var(--clr-primary-orange)}
.footer-brand .brand-icon{width:28px;height:28px}
.footer-tagline{font-size:0.95rem;line-height:1.6;color:rgba(255,255,255,0.6);max-width:36ch}
.footer-heading{font-family:var(--font-body);font-weight:700;font-size:1.1rem;color:#fff;margin-bottom:16px;letter-spacing:0.02em}
.footer-link-list{display:flex;flex-direction:column;gap:10px}
.footer-link-list a{color:rgba(255,255,255,0.65);font-size:0.95rem;transition:color 0.2s,padding-left 0.2s;padding-left:0}
.footer-link-list a:hover{color:var(--clr-primary-orange);padding-left:6px}
.footer-contact-list{display:flex;flex-direction:column;gap:8px;font-size:0.95rem;color:rgba(255,255,255,0.65)}
.footer-contact-list a{color:var(--clr-primary-orange);transition:opacity 0.2s}
.footer-contact-list a:hover{opacity:0.8}
.footer-note{font-size:0.85rem;color:rgba(255,255,255,0.45);margin-top:16px;line-height:1.6;max-width:40ch}
.footer-bottom{margin-top:48px;border-top:1px solid rgba(255,255,255,0.08);padding:20px 0}
.footer-bottom-inner{display:flex;flex-direction:column;gap:8px;align-items:center;justify-content:space-between}
@media(min-width:640px){.footer-bottom-inner{flex-direction:row}}
.footer-icp{font-size:0.8rem;color:rgba(255,255,255,0.4)}
.footer-copy{font-size:0.8rem;color:rgba(255,255,255,0.35)}
.footer-logo .brand-text{font-size:1.3rem}

/* ===== Main Content Area ===== */
#main-content{min-height:70vh;padding-top:calc(var(--nav-height) + 40px)}
@media(min-width:768px){#main-content{padding-top:calc(var(--nav-height) + 56px)}}

/* ===== Breadcrumb (shared) ===== */
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:0.9rem;color:var(--clr-text-secondary);padding:16px 0;margin-bottom:24px}
.breadcrumb a{color:var(--clr-text-secondary);transition:color 0.2s}
.breadcrumb a:hover{color:var(--clr-primary-orange)}
.breadcrumb .sep{color:var(--clr-border-light);margin:0 4px}

/* ===== Responsive Adjustments ===== */
@media(max-width:639px){
  :root{--section-gap:3.5rem}
  .capsule-nav{top:12px;width:calc(100% - 16px);border-radius:28px}
  .capsule-nav-inner{padding:0 8px}
  .exhibit-card{padding:20px 16px}
  .btn-ghost,.btn-primary{padding:6px 14px;font-size:0.85rem}
}
@media(min-width:640px) and (max-width:1023px){
  :root{--section-gap:4.5rem}
  .nav-actions .btn-ghost{padding:6px 14px;font-size:0.85rem}
  .nav-actions .btn-primary{padding:6px 18px;font-size:0.85rem}
}
@media(min-width:1024px){
  .capsule-nav-inner{gap:32px}
  .nav-list{gap:6px}
}

/* ===== Print ===== */
@media print{
  .capsule-nav,.scroll-progress,.nav-toggle,.nav-actions,.site-footer{display:none!important}
  #main-content{padding-top:0}
  body{background:#fff;color:#000}
}