/* =========================================================
   THE PACIFIC CUP · 青天杯
   Design language: clean · sleek · elegant
   Palette: deep emerald + sage + cream + brass
   ========================================================= */

:root {
  --emerald:      #0E4A3C;
  --emerald-deep: #093229;
  --emerald-700:  #14543F;
  --sage:         #8FC9B4;
  --sage-soft:    #d7e8e0;
  --cream:        #F7F4EC;
  --cream-deep:   #efe9da;
  --paper:        #ffffff;
  --ink:          #1c2723;
  --ink-soft:     #4a5a53;
  --brass:        #b3924f;
  --brass-light:  #c9ad74;

  --maxw: 1200px;
  --gutter: clamp(1.25rem, 5vw, 4rem);
  --radius: 4px;
  --shadow-sm: 0 2px 10px rgba(9, 50, 41, .06);
  --shadow:    0 18px 50px -20px rgba(9, 50, 41, .35);
  --shadow-lg: 0 40px 90px -30px rgba(9, 50, 41, .45);

  --serif: "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --sans:  "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --cjk:   "Noto Serif SC", var(--serif);

  --ease: cubic-bezier(.22, 1, .36, 1);
}

/* ----------------------------- Base ----------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--sans);
  font-weight: 400;
  color: var(--ink);
  background: var(--cream);
  line-height: 1.7;
  font-size: clamp(1rem, .96rem + .2vw, 1.075rem);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

h1, h2, h3 { margin: 0; font-weight: 600; line-height: 1.08; }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.skip-link {
  position: absolute; left: 50%; top: -100px; transform: translateX(-50%);
  background: var(--emerald); color: var(--cream); padding: .7em 1.4em;
  border-radius: 0 0 var(--radius) var(--radius); z-index: 2000; transition: top .2s;
}
.skip-link:focus { top: 0; }

:focus-visible { outline: 2px solid var(--brass); outline-offset: 3px; }

/* ----------------------------- Type helpers ----------------------------- */
.display {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(2.1rem, 1.4rem + 3.2vw, 3.85rem);
  letter-spacing: -.01em;
  color: var(--emerald);
}
.display--center { text-align: center; }

.eyebrow {
  font-family: var(--sans);
  font-size: .74rem;
  font-weight: 600;
  letter-spacing: .32em;
  text-transform: uppercase;
  color: var(--brass);
  margin: 0 0 1.1rem;
  display: flex; align-items: center; gap: .9rem;
}
.eyebrow::before { content: ""; width: 34px; height: 1px; background: var(--brass); opacity: .8; }
.eyebrow--center { justify-content: center; }
.eyebrow--center::after { content: ""; width: 34px; height: 1px; background: var(--brass); opacity: .8; }

.lede, .lede p { font-size: 1.18em; }
.lede { color: var(--ink); font-weight: 400; }

.section__intro {
  max-width: 60ch;
  color: var(--ink-soft);
  font-size: 1.1rem;
  margin: 1.4rem 0 0;
}
.section__intro--center { margin-inline: auto; text-align: center; }

/* ----------------------------- Buttons ----------------------------- */
.btn {
  --bg: var(--emerald);
  display: inline-flex; align-items: center; justify-content: center;
  gap: .5em;
  font-family: var(--sans);
  font-size: .82rem; font-weight: 600;
  letter-spacing: .12em; text-transform: uppercase;
  padding: 1.05em 1.9em;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: transform .35s var(--ease), background .35s var(--ease), color .35s var(--ease), border-color .35s var(--ease), box-shadow .35s var(--ease);
}
.btn--sm { padding: .8em 1.35em; font-size: .72rem; }
.btn--solid { background: var(--emerald); color: var(--cream); }
.btn--solid:hover { background: var(--emerald-deep); transform: translateY(-2px); box-shadow: var(--shadow); }
.btn--ghost { background: transparent; color: var(--cream); border-color: rgba(247,244,236,.55); }
.btn--ghost:hover { background: rgba(247,244,236,.12); border-color: var(--cream); transform: translateY(-2px); }
.btn--ghost-dark { color: var(--emerald); border-color: rgba(14,74,60,.4); }
.btn--ghost-dark:hover { background: rgba(14,74,60,.06); border-color: var(--emerald); }

/* ----------------------------- Header / Nav ----------------------------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 1000;
  transition: background .4s var(--ease), box-shadow .4s var(--ease), padding .4s var(--ease);
  padding: .55rem 0;
}
.site-header__inner {
  max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter);
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.brand { display: flex; align-items: center; gap: .7rem; }
.brand__mark { width: 44px; height: auto; filter: drop-shadow(0 2px 6px rgba(0,0,0,.25)); transition: filter .4s; }
.brand__text { display: flex; flex-direction: column; line-height: 1; }
.brand__name {
  font-family: var(--serif); font-weight: 600; font-size: 1.35rem;
  color: var(--cream); letter-spacing: .01em; transition: color .4s var(--ease);
}
.brand__cn { font-family: var(--cjk); font-size: .82rem; letter-spacing: .42em; color: var(--sage); margin-top: .15rem; transition: color .4s; }

.nav { display: flex; align-items: center; gap: clamp(1rem, 2.4vw, 2.1rem); }
.nav > a:not(.btn) {
  font-size: .82rem; font-weight: 500; letter-spacing: .06em;
  color: rgba(247,244,236,.9); position: relative; padding: .3em 0;
  transition: color .3s;
}
.nav > a:not(.btn)::after {
  content: ""; position: absolute; left: 0; bottom: -2px; width: 0; height: 1.5px;
  background: var(--brass-light); transition: width .35s var(--ease);
}
.nav > a:not(.btn):hover::after { width: 100%; }
.nav > a:not(.btn):hover { color: var(--cream); }

/* Scrolled state -> solid cream header with dark text */
.site-header.scrolled {
  background: rgba(247,244,236,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(14,74,60,.08), 0 10px 30px -20px rgba(9,50,41,.4);
}
.site-header.scrolled .brand__name { color: var(--emerald); }
.site-header.scrolled .brand__cn { color: var(--brass); }
.site-header.scrolled .brand__mark { filter: none; }
.site-header.scrolled .nav > a:not(.btn) { color: var(--ink); }
.site-header.scrolled .nav > a:not(.btn):hover { color: var(--emerald); }
.site-header.scrolled .nav-toggle span { background: var(--emerald); }

.nav-toggle {
  display: none; width: 44px; height: 44px; border: 0; background: transparent;
  cursor: pointer; padding: 10px; z-index: 1200;
}
.nav-toggle span {
  display: block; height: 2px; width: 100%; background: var(--cream);
  border-radius: 2px; margin: 5px 0; transition: transform .35s var(--ease), opacity .25s;
}

/* ----------------------------- Hero ----------------------------- */
.hero {
  position: relative; min-height: 100svh;
  display: flex; align-items: center; justify-content: center;
  text-align: center; color: var(--cream); overflow: hidden;
}
.hero__media { position: absolute; inset: 0; }
.hero__media img { width: 100%; height: 100%; object-fit: cover; }
.hero__overlay {
  position: absolute; inset: 0;
  background:
    radial-gradient(120% 90% at 50% 30%, rgba(9,50,41,.30), rgba(9,50,41,.62) 70%, rgba(6,26,21,.82)),
    linear-gradient(180deg, rgba(6,26,21,.55), rgba(6,26,21,.15) 30%, rgba(6,26,21,.55));
}
.hero__inner { position: relative; z-index: 2; padding: 7rem var(--gutter) 5rem; max-width: 60rem; }
.hero__crest { width: clamp(78px, 11vw, 116px); height: auto; margin: 0 auto 1.6rem; filter: drop-shadow(0 6px 24px rgba(0,0,0,.4)); }
.hero__est {
  font-size: .76rem; font-weight: 600; letter-spacing: .42em; text-transform: uppercase;
  color: var(--sage); margin: 0 0 1.1rem;
}
.hero__title {
  font-family: var(--serif); font-weight: 600;
  font-size: clamp(3rem, 1.8rem + 6vw, 6.5rem);
  line-height: .98; letter-spacing: -.015em;
  text-shadow: 0 4px 40px rgba(0,0,0,.35);
}
.hero__cn { display: block; font-family: var(--cjk); font-weight: 500; font-size: .28em; letter-spacing: .55em; color: var(--sage); margin-top: .9rem; text-indent: .55em; }
.hero__tagline {
  font-family: var(--serif); font-style: italic; font-weight: 500;
  font-size: clamp(1.15rem, 1rem + 1vw, 1.7rem); line-height: 1.45;
  color: rgba(247,244,236,.95); margin: 1.8rem auto 0; max-width: 34ch;
}
.hero__meta {
  font-size: .8rem; font-weight: 500; letter-spacing: .25em; text-transform: uppercase;
  color: rgba(247,244,236,.78); margin: 1.5rem 0 0;
}
.hero__cta { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; margin-top: 2.6rem; }
.hero__scroll {
  position: absolute; bottom: 1.6rem; left: 50%; transform: translateX(-50%); z-index: 2;
  display: flex; flex-direction: column; align-items: center; gap: .35rem;
  font-size: .66rem; letter-spacing: .28em; text-transform: uppercase; color: rgba(247,244,236,.7);
}
.hero__scroll svg { animation: bob 2.2s var(--ease) infinite; }
@keyframes bob { 0%,100% { transform: translateY(0);} 50% { transform: translateY(6px);} }

/* ----------------------------- Sections ----------------------------- */
.section { padding: clamp(4.5rem, 9vw, 8.5rem) 0; }
.section--tight { padding: clamp(3.5rem, 7vw, 6rem) 0; }
.section--alt { background: var(--cream-deep); }

/* About */
.about__grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: clamp(2rem, 6vw, 5.5rem); align-items: start; }
.about__lead { position: sticky; top: 110px; }
.about__body p { margin: 0 0 1.3rem; color: var(--ink-soft); }
.about__body p:first-child { margin-top: 0; }
.about__body a { color: var(--emerald); border-bottom: 1px solid rgba(14,74,60,.3); transition: border-color .3s; }
.about__body a:hover { border-color: var(--emerald); }

/* Stats */
.numbers { background: var(--emerald); color: var(--cream); position: relative; overflow: hidden; }
.numbers::before, .numbers::after {
  content: "青天杯"; position: absolute; font-family: var(--cjk); font-weight: 700;
  font-size: clamp(8rem, 22vw, 18rem); color: rgba(143,201,180,.05);
  line-height: 1; pointer-events: none; white-space: nowrap;
}
.numbers::before { top: -2rem; left: -1rem; }
.numbers::after { bottom: -4rem; right: -2rem; }
.numbers .eyebrow { color: var(--sage); }
.numbers .eyebrow::before, .numbers .eyebrow::after { background: var(--sage); }
.numbers .display { color: var(--cream); position: relative; }
.stats {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem); margin: clamp(2.5rem, 5vw, 4rem) 0 0;
}
.stat { text-align: center; position: relative; }
.stat + .stat::before { content: ""; position: absolute; left: calc(-1 * clamp(.75rem, 2vw, 1.5rem)); top: 12%; height: 76%; width: 1px; background: rgba(143,201,180,.25); }
.stat__num {
  display: block; font-family: var(--serif); font-weight: 600;
  font-size: clamp(3rem, 2rem + 4vw, 5rem); line-height: 1; color: var(--cream);
  letter-spacing: -.02em;
}
.stat__num--word { font-size: clamp(2.2rem, 1.6rem + 2.8vw, 4rem); }
.stat--feature .stat__num { color: var(--sage); }
.stat__label {
  display: block; margin-top: .8rem; font-size: .76rem; font-weight: 500;
  letter-spacing: .2em; text-transform: uppercase; color: rgba(247,244,236,.78);
}
.numbers__note {
  position: relative; z-index: 1; text-align: center; max-width: 62ch; margin: clamp(2.5rem,5vw,3.5rem) auto 0;
  color: rgba(247,244,236,.85); font-family: var(--serif); font-style: italic; font-size: 1.3rem; line-height: 1.6;
}
.numbers__note strong { color: var(--sage); font-style: normal; font-weight: 600; }

/* Quote band */
.band { position: relative; color: var(--cream); text-align: center; padding: clamp(5rem, 10vw, 8rem) 0; overflow: hidden; }
.band__media { position: absolute; inset: 0; background-size: cover; background-position: center; transform: scale(1.05); }
.band__overlay { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(6,26,21,.78), rgba(9,50,41,.82)); }
.band__inner { position: relative; z-index: 1; }
.mallets { color: var(--brass-light); margin-bottom: 1.4rem; }
.band__quote {
  font-family: var(--serif); font-weight: 500; font-style: italic; margin: 0 auto;
  font-size: clamp(1.6rem, 1.2rem + 2.2vw, 3rem); line-height: 1.3; max-width: none;
  white-space: nowrap;
}
.band__cite { margin: 1.6rem 0 0; font-size: .76rem; letter-spacing: .28em; text-transform: uppercase; color: var(--sage); }
.closing__crest { width: clamp(64px, 8vw, 88px); height: auto; margin: 0 auto 1.6rem; filter: drop-shadow(0 6px 24px rgba(0,0,0,.4)); }

/* Memories (video) */
.memories { background: var(--emerald); color: var(--cream); position: relative; overflow: hidden; }
.memories::before { content: "青天杯"; position: absolute; top: -3rem; right: -1.5rem; font-family: var(--cjk); font-weight: 700; font-size: clamp(8rem, 20vw, 16rem); color: rgba(143,201,180,.05); line-height: 1; pointer-events: none; white-space: nowrap; }
.memories .eyebrow { color: var(--sage); }
.memories .eyebrow::before, .memories .eyebrow::after { background: var(--sage); }
.memories .display { color: var(--cream); position: relative; }
.memories .section__intro { color: rgba(247,244,236,.82); position: relative; }
.video-frame {
  position: relative; z-index: 1;
  max-width: 940px; margin: clamp(2.4rem, 5vw, 3.6rem) auto 0;
  aspect-ratio: 16 / 9; border-radius: 8px; overflow: hidden; background: #05130f;
  border: 1px solid rgba(143,201,180,.22); box-shadow: var(--shadow-lg);
}
.video-frame video { width: 100%; height: 100%; object-fit: cover; display: block; }

/* Experience cards */
.format .display, .programme .display { margin-top: .2rem; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1rem, 2vw, 1.6rem); margin-top: clamp(2.5rem, 5vw, 3.8rem); }
.card {
  background: var(--paper); border: 1px solid rgba(14,74,60,.08);
  border-radius: var(--radius); padding: clamp(1.6rem, 2.5vw, 2.3rem);
  box-shadow: var(--shadow-sm); position: relative; overflow: hidden;
  transition: transform .45s var(--ease), box-shadow .45s var(--ease);
}
.card::before { content: ""; position: absolute; left: 0; top: 0; height: 100%; width: 3px; background: var(--brass); transform: scaleY(0); transform-origin: top; transition: transform .45s var(--ease); }
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.card:hover::before { transform: scaleY(1); }
.card__no { font-family: var(--serif); font-size: 1rem; color: var(--brass); letter-spacing: .1em; }
.card h3 { font-family: var(--serif); font-size: 1.55rem; color: var(--emerald); margin: .5rem 0 .7rem; }
.card p { margin: 0; color: var(--ink-soft); font-size: .98rem; }

/* Timeline */
.timeline { list-style: none; margin: clamp(2.5rem, 5vw, 3.8rem) 0 0; padding: 0; position: relative; max-width: 820px; }
.timeline::before { content: ""; position: absolute; left: 7.5rem; top: .6rem; bottom: .6rem; width: 1px; background: linear-gradient(var(--brass), rgba(179,146,79,.15)); }
.timeline__item { display: grid; grid-template-columns: 6.4rem 1fr; gap: 2.2rem; padding: 0 0 2.4rem; position: relative; }
.timeline__item:last-child { padding-bottom: 0; }
.timeline__day { font-family: var(--serif); font-weight: 600; font-size: 1.1rem; color: var(--brass); text-align: right; padding-top: .15rem; }
.timeline__content { position: relative; }
.timeline__content::before { content: ""; position: absolute; left: -1.45rem; top: .5rem; width: 11px; height: 11px; border-radius: 50%; background: var(--cream-deep); border: 2px solid var(--brass); box-shadow: 0 0 0 5px var(--cream-deep); }
.timeline__content h3 { font-family: var(--serif); font-size: 1.5rem; color: var(--emerald); margin-bottom: .3rem; }
.timeline__content p { margin: 0; color: var(--ink-soft); }

/* Universities */
.universities { background: var(--cream); }
.logos {
  list-style: none; margin: clamp(2.5rem, 5vw, 3.8rem) 0 0; padding: 0;
  display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); grid-auto-rows: 214px;
  gap: clamp(1rem, 2vw, 1.5rem);
}
.logos li { min-width: 0; }
.logos__item {
  height: 100%;
  background: var(--paper); border: 1px solid rgba(14,74,60,.08); border-radius: var(--radius);
  box-shadow: var(--shadow-sm); padding: 1.55rem .8rem 1.15rem;
  display: flex; flex-direction: column; align-items: center; justify-content: space-between; gap: .85rem;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease);
}
.logos__item:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.logos__item--static:hover { transform: none; box-shadow: var(--shadow-sm); }
.logos__item img {
  width: min(116px, 100%); height: 96px; object-fit: contain;
  filter: grayscale(1);
  transition: transform .45s var(--ease), filter .45s var(--ease);
}
.logos__item:hover img,
.logos__item:focus-visible img { transform: scale(1.04); filter: grayscale(0); }
.logos__item span { font-family: var(--serif); font-size: 1rem; color: var(--emerald); text-align: center; line-height: 1.2; }

@media (max-width: 1180px) {
  .logos { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

/* Venue */
.venue__head { display: grid; grid-template-columns: 1fr 1.2fr; gap: clamp(2rem, 6vw, 5rem); align-items: end; }
.venue__intro p { margin: 0 0 1rem; color: var(--ink-soft); }
.venue__intro p:last-child { margin-bottom: 0; }
.venue__intro strong { color: var(--emerald); font-weight: 600; }
.gallery {
  margin-top: clamp(2.5rem, 5vw, 3.8rem);
  display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: clamp(150px, 18vw, 230px);
  gap: clamp(.6rem, 1.2vw, 1rem);
}
.gallery__item {
  position: relative; overflow: hidden; border: 0; padding: 0; cursor: pointer;
  border-radius: var(--radius); background: var(--emerald-deep);
}
.gallery__item--wide { grid-column: span 2; }
.gallery__item img { width: 100%; height: 100%; object-fit: cover; transition: transform .9s var(--ease), filter .5s; }
.gallery__item::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 45%, rgba(6,26,21,.65));
  opacity: 0; transition: opacity .45s var(--ease);
}
.gallery__item:hover img { transform: scale(1.08); }
.gallery__item:hover::after { opacity: 1; }
.gallery__item:focus-visible { outline: 2px solid var(--brass); outline-offset: 2px; }

/* Sponsor */
.sponsor__grid { display: grid; grid-template-columns: minmax(180px, .8fr) 1.6fr; gap: clamp(2rem, 6vw, 5rem); align-items: center; }
.sponsor__brand { display: flex; justify-content: center; }
.sponsor__brand img {
  width: clamp(150px, 18vw, 210px); height: auto;
  border-radius: 22px;
  border: 1px solid rgba(179,146,79,.35);
  box-shadow: var(--shadow), 0 0 0 7px var(--paper);
}
.sponsor__body p { color: var(--ink-soft); margin: 0 0 1.2rem; }
.sponsor__body .display { margin-bottom: 1.4rem; }

/* Footer */
.site-footer { background: var(--emerald-deep); color: rgba(247,244,236,.75); padding: clamp(3rem, 6vw, 4.5rem) 0 2rem; }
.site-footer__inner { display: grid; grid-template-columns: minmax(0, 1fr) max-content; gap: 2.5rem; align-items: start; }
.site-footer__brand img { width: 74px; height: auto; }
.site-footer__cn { font-family: var(--cjk); letter-spacing: .4em; color: var(--sage); margin: .8rem 0 .4rem; }
.site-footer__tag { font-family: var(--serif); font-style: italic; font-size: 1.15rem; color: rgba(247,244,236,.85); margin: 0; max-width: none; white-space: nowrap; }
.site-footer__nav {
  display: flex; flex-wrap: nowrap; gap: .8rem 1.8rem; justify-content: flex-end; align-content: start;
  max-width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; padding-bottom: .2rem;
}
.site-footer__nav a { flex: 0 0 auto; white-space: nowrap; font-size: .85rem; letter-spacing: .04em; position: relative; transition: color .3s; }
.site-footer__nav a:hover { color: var(--sage); }
.site-footer__base {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: .6rem;
  margin-top: clamp(2.5rem, 5vw, 3.5rem); padding-top: 1.6rem;
  border-top: 1px solid rgba(143,201,180,.16); font-size: .78rem; color: rgba(247,244,236,.55);
}
.site-footer__base p { margin: 0; }

@media (max-width: 1040px) {
  .site-footer__inner { grid-template-columns: 1fr; }
  .site-footer__nav { justify-content: flex-start; }
}

/* ----------------------------- Lightbox ----------------------------- */
.lightbox {
  position: fixed; inset: 0; z-index: 3000; display: flex; align-items: center; justify-content: center;
  background: rgba(6,18,14,.94); padding: clamp(1rem, 5vw, 4rem);
  opacity: 0; visibility: hidden; transition: opacity .35s var(--ease), visibility .35s;
}
.lightbox.open { opacity: 1; visibility: visible; }
.lightbox__fig { margin: 0; max-width: 100%; max-height: 100%; display: flex; flex-direction: column; align-items: center; gap: 1rem; transform: scale(.96); transition: transform .4s var(--ease); }
.lightbox.open .lightbox__fig { transform: scale(1); }
.lightbox__fig img { max-width: 100%; max-height: 80svh; object-fit: contain; border-radius: var(--radius); box-shadow: var(--shadow-lg); }
.lightbox__fig figcaption { color: var(--sage); font-family: var(--serif); font-style: italic; font-size: 1.1rem; letter-spacing: .02em; }
.lightbox__close, .lightbox__nav {
  position: absolute; background: rgba(247,244,236,.08); color: var(--cream); border: 1px solid rgba(247,244,236,.25);
  cursor: pointer; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  transition: background .3s, transform .3s;
}
.lightbox__close { top: clamp(1rem,3vw,2rem); right: clamp(1rem,3vw,2rem); width: 46px; height: 46px; font-size: 1.6rem; line-height: 1; }
.lightbox__nav { top: 50%; transform: translateY(-50%); width: 54px; height: 54px; font-size: 2rem; line-height: 1; }
.lightbox__nav--prev { left: clamp(.5rem,2vw,2rem); }
.lightbox__nav--next { right: clamp(.5rem,2vw,2rem); }
.lightbox__close:hover, .lightbox__nav:hover { background: rgba(247,244,236,.2); }
.lightbox__nav:hover { transform: translateY(-50%) scale(1.08); }

/* ----------------------------- Reveal animation ----------------------------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .9s var(--ease), transform .9s var(--ease); will-change: opacity, transform; }
.reveal.is-visible { opacity: 1; transform: none; }

/* ----------------------------- Responsive ----------------------------- */
@media (max-width: 980px) {
  .about__grid { grid-template-columns: 1fr; gap: 2rem; }
  .about__lead { position: static; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); gap: 2.5rem 1.5rem; }
  .stat:nth-child(3)::before, .stat:nth-child(1)::before { display: none; }
  .stat:nth-child(odd)::before { display: none; }
  .venue__head { grid-template-columns: 1fr; gap: 1.5rem; }
  .gallery { grid-template-columns: repeat(2, 1fr); }
  .gallery__item--wide { grid-column: span 2; }
  .sponsor__grid { grid-template-columns: 1fr; text-align: center; gap: 2rem; }
  .sponsor .eyebrow { justify-content: center; }
  .sponsor .eyebrow::after { content: ""; width: 34px; height: 1px; background: var(--brass); opacity: .8; }
}

/* Nav collapses to a slide-in panel before the horizontal bar gets cramped */
@media (max-width: 920px) {
  .site-header.menu-open {
    background: var(--emerald-deep);
    box-shadow: none;
    /* backdrop-filter makes the header a containing block for position:fixed
       children, which traps the slide-in nav inside the (short) header box once
       the page is scrolled. Drop it while the menu is open so the panel can fill
       the full viewport height. */
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
  .site-header.menu-open .brand__name,
  .site-header.scrolled.menu-open .brand__name { color: var(--cream); }
  .site-header.menu-open .brand__cn,
  .site-header.scrolled.menu-open .brand__cn { color: var(--sage); }
  .site-header.menu-open .brand__mark,
  .site-header.scrolled.menu-open .brand__mark { filter: drop-shadow(0 2px 6px rgba(0,0,0,.25)); }
  .nav {
    position: fixed; inset: 0 0 0 auto; width: min(82vw, 360px);
    flex-direction: column; align-items: flex-start;
    justify-content: safe center; gap: 1.5rem; overflow-y: auto;
    background: var(--emerald-deep); padding: 5.5rem var(--gutter) 3rem;
    transform: translateX(100%); transition: transform .5s var(--ease);
    box-shadow: var(--shadow-lg); z-index: 1100;
  }
  .nav.open { transform: translateX(0); }
  /* keep panel links light even when the header is in its scrolled (cream) state */
  .site-header .nav > a:not(.btn),
  .site-header.scrolled .nav > a:not(.btn) { color: var(--cream); font-size: 1.05rem; }
  .site-header .nav > a:not(.btn):hover { color: var(--sage); }
  .nav__cta { margin-top: .6rem; }
  .nav-toggle { display: block; }
  .site-header.menu-open .nav-toggle span { background: var(--cream) !important; }
  .nav-toggle.is-active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.is-active span:nth-child(2) { opacity: 0; }
  .nav-toggle.is-active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  body.menu-open { overflow: hidden; }
}

@media (max-width: 760px) {
  html { scroll-padding-top: 72px; }
  .timeline::before { left: 4.9rem; }
  .timeline__item { grid-template-columns: 4.2rem minmax(0, 1fr); gap: 1.6rem; }
  .timeline__content::before { left: -1.25rem; }

  .logos { grid-template-columns: repeat(2, 1fr); }
  .site-footer__inner { grid-template-columns: 1fr; }
  .site-footer__nav { justify-content: flex-start; }
  .hero__tagline br { display: none; }
}

@media (max-width: 460px) {
  .cards { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; gap: 2rem; }
  .stat::before { display: none !important; }
  .logos { grid-template-columns: 1fr; }
  .closing .band__quote { font-size: 1rem; }
  .site-footer__tag { font-size: .95rem; }
  .gallery { grid-template-columns: 1fr; }
  .gallery__item--wide { grid-column: span 1; }
  .hero__cta .btn, .contact__links .btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1 !important; transform: none !important; transition: none; }
  .hero__scroll svg { animation: none; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}