/* ==========================================================================
   Upsilon Sigma Chapter · Phi Beta Sigma Fraternity, Inc. · Chicago
   Design tokens, layout primitives, and components.
   ========================================================================== */

:root {
  /* Brand: Phi Beta Sigma royal blue + pure white, deepened with navy */
  --navy:      #0A1A3F;
  --navy-2:    #0F2B66;
  --royal:     #164F90; /* official ΦΒΣ Royal Blue */
  --electric:  #2E6FD6;
  --sky:       #A7C3F2;
  --ivory:     #F6F7FC;
  --white:     #FFFFFF;
  --ink:       #0E142E;
  --slate:     #4B5379;
  --dove:      #C4CCE8;
  --line:      rgba(14, 20, 46, 0.12);
  --line-dark: rgba(255, 255, 255, 0.14);

  --bg:        var(--ivory);
  --fg:        var(--ink);
  --muted:     var(--slate);

  --font-display: "Bricolage Grotesque", "Helvetica Neue", Arial, sans-serif;
  --font-body:    "Instrument Sans", "Helvetica Neue", Arial, sans-serif;
  --font-serif:   "Instrument Serif", Georgia, "Times New Roman", serif;

  --wrap: 1240px;
  --gutter: clamp(16px, 5vw, 48px);
  --radius: 4px;
  --ease: cubic-bezier(.2,.7,.2,1);

  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
h1, h2, h3, h4 { margin: 0; font-family: var(--font-display); font-weight: 700; line-height: 1.02; letter-spacing: -0.025em; text-wrap: balance; }
p { margin: 0; }
:focus-visible { outline: 3px solid var(--electric); outline-offset: 3px; }
::selection { background: var(--royal); color: var(--white); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  html { scroll-behavior: auto; }
}

/* ---------- Layout ---------- */
.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: clamp(64px, 9vw, 128px); }
.section--tight { padding-block: clamp(40px, 6vw, 80px); }
.band { background: var(--navy); color: var(--white); }
.band--royal { background: var(--royal); color: var(--white); }
.band--white { background: var(--white); }
.grid { display: grid; gap: clamp(20px, 3vw, 40px); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 960px) { .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; } }

/* ---------- Type ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-body); font-weight: 600; font-size: 12px;
  letter-spacing: .18em; text-transform: uppercase; color: var(--royal);
}
.eyebrow::before { content: ""; width: 28px; height: 2px; background: currentColor; }
.band .eyebrow { color: var(--sky); }
.hero .eyebrow, .page-hero .eyebrow { color: var(--white); text-shadow: 0 1px 12px rgba(10,26,63,.8); }
.h-display { font-size: clamp(2.6rem, 7.2vw, 6.4rem); font-weight: 800; letter-spacing: -0.04em; line-height: .94; }
.h-1 { font-size: clamp(2.2rem, 5vw, 4.4rem); font-weight: 800; letter-spacing: -0.035em; }
.h-2 { font-size: clamp(1.8rem, 3.6vw, 3rem); }
.h-3 { font-size: clamp(1.25rem, 2vw, 1.6rem); }
.lede { font-size: clamp(1.1rem, 1.6vw, 1.35rem); line-height: 1.5; color: var(--muted); max-width: 60ch; }
.band .lede { color: var(--dove); }
.prose { max-width: 66ch; display: grid; gap: 1.1em; }
.prose p { color: var(--muted); }
.band .prose p { color: var(--dove); }
.serif-quote { font-family: var(--font-serif); font-style: italic; font-weight: 400; letter-spacing: 0; }
.gradient-text {
  background: linear-gradient(92deg, var(--electric) 0%, var(--sky) 55%, var(--white) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.section-head { display: grid; gap: 18px; margin-bottom: clamp(36px, 5vw, 64px); max-width: 760px; }
.section-head--split { max-width: none; grid-template-columns: 1fr auto; align-items: end; }
@media (max-width: 720px) { .section-head--split { grid-template-columns: 1fr; } }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 15px 26px; border-radius: 999px; border: 2px solid transparent;
  font-family: var(--font-body); font-weight: 600; font-size: 15px; letter-spacing: .01em;
  transition: transform .25s var(--ease), background .25s, color .25s, border-color .25s;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn svg { width: 18px; height: 18px; }
.btn--primary { background: var(--royal); color: var(--white); }
.btn--primary:hover { background: var(--electric); }
.btn--white { background: var(--white); color: var(--navy); }
.btn--white:hover { background: var(--sky); }
.btn--ghost { border-color: var(--line); color: var(--ink); }
.btn--ghost:hover { border-color: var(--royal); color: var(--royal); }
.band .btn--ghost, .hero .btn--ghost, .page-hero .btn--ghost, .header .btn--ghost, .mobile-nav .btn--ghost { border-color: rgba(255,255,255,.55); color: var(--white); }
.band .btn--ghost:hover, .hero .btn--ghost:hover, .page-hero .btn--ghost:hover, .header .btn--ghost:hover, .mobile-nav .btn--ghost:hover { border-color: var(--white); background: rgba(255,255,255,.1); }
.btn--sm { padding: 10px 18px; font-size: 14px; }

.link-arrow { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; color: var(--royal); }
.link-arrow svg { width: 18px; height: 18px; transition: transform .25s var(--ease); }
.link-arrow:hover svg { transform: translateX(4px); }
.band .link-arrow { color: var(--sky); }

/* ---------- Header ---------- */
.topbar {
  background: var(--navy); color: var(--dove); font-size: 13px;
  border-bottom: 1px solid var(--line-dark);
}
.topbar .wrap { display: flex; justify-content: space-between; align-items: center; min-height: 38px; gap: 16px; }
.topbar a:hover { color: var(--white); }
.topbar__links { display: flex; gap: 22px; }
@media (max-width: 720px) { .topbar__motto { display: none; } .topbar .wrap { justify-content: center; } }

.header {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 50;
  background: color-mix(in srgb, var(--navy) 88%, transparent);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  color: var(--white); border-bottom: 1px solid var(--line-dark);
}
.header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 80px; }
.brand { display: flex; align-items: center; gap: 14px; }
.brand__mark { width: 52px; height: 52px; border-radius: 50%; background: var(--white); padding: 2px; flex: none; }
.brand__mark--chapter { margin-left: 6px; }
.brand__name { font-family: var(--font-display); font-weight: 800; font-size: 19px; letter-spacing: -0.02em; line-height: 1; white-space: nowrap; }
.brand__sub { font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--dove); margin-top: 4px; }
.nav { display: flex; align-items: center; gap: 4px; }
.nav a { padding: 10px 12px; border-radius: 999px; font-weight: 500; font-size: 15px; color: var(--dove); transition: color .2s, background .2s; }
.nav a:hover { color: var(--white); background: rgba(255,255,255,.08); }
.nav a[aria-current="page"] { color: var(--white); background: rgba(255,255,255,.12); }
.header__cta { display: flex; align-items: center; gap: 10px; }
.nav-toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--line-dark); border-radius: 999px; background: transparent; color: var(--white); align-items: center; justify-content: center; }
.nav-toggle svg { width: 22px; height: 22px; }
@media (max-width: 1180px) {
  .nav, .header__cta .btn--ghost { display: none; }
  .nav-toggle { display: inline-flex; }
  .brand__sub { display: none; }
  .brand__name { font-size: 16px; }
}
@media (max-width: 640px) { .brand__mark--chapter, .header__cta .btn--primary { display: none; } }
.mobile-nav {
  position: fixed; inset: 0; z-index: 60; background: var(--navy); color: var(--white);
  padding: calc(24px + env(safe-area-inset-top, 0px)) var(--gutter) 40px; display: none; flex-direction: column; gap: 8px;
  overflow-y: auto;
}
.mobile-nav[data-open="true"] { display: flex; }
.mobile-nav__top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.mobile-nav a.mnav { font-family: var(--font-display); font-size: clamp(2rem, 8vw, 3rem); font-weight: 700; letter-spacing: -0.03em; padding: 8px 0; border-bottom: 1px solid var(--line-dark); }
.mobile-nav a.mnav[aria-current="page"] { color: var(--sky); }
.mobile-nav .mobile-nav__ctas { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; background: var(--navy); color: var(--white); isolation: isolate; }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -2;
  background:
    linear-gradient(180deg, rgba(10,26,63,.35) 0%, rgba(10,26,63,.15) 45%, rgba(10,26,63,.7) 85%, var(--navy) 100%),
    linear-gradient(90deg, rgba(10,26,63,.82) 0%, rgba(10,26,63,.45) 45%, rgba(10,26,63,.25) 100%);
}
.hero__photo { position: absolute; inset: 0; z-index: -3; width: 100%; height: 100%; max-width: none; object-fit: cover; object-position: center 50%; }
.hero__sigma {
  position: absolute; z-index: -1; right: -4vw; top: 50%; transform: translateY(-52%);
  font-family: var(--font-display); font-weight: 800; font-size: clamp(22rem, 62vw, 64rem); line-height: 1;
  color: transparent; -webkit-text-stroke: 1px rgba(255,255,255,.14); user-select: none; pointer-events: none;
  will-change: transform; animation: sigmaDrift 14s ease-in-out infinite alternate;
}
@keyframes sigmaDrift { from { transform: translateY(-52%) rotate(-2deg); } to { transform: translateY(-48%) rotate(2deg); } }
.hero__grid { position: absolute; inset: 0; z-index: -1; opacity: .6; background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px); background-size: 64px 64px; mask-image: radial-gradient(70% 70% at 50% 50%, #000 30%, transparent 100%); -webkit-mask-image: radial-gradient(70% 70% at 50% 50%, #000 30%, transparent 100%); }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: clamp(32px, 5vw, 64px); align-items: center; padding-block: clamp(72px, 10vw, 140px); }
@media (max-width: 900px) { .hero .wrap { grid-template-columns: 1fr; } .hero__side { order: -1; } }
.hero__content { display: grid; gap: 28px; }
.hero__title { animation: rise .9s var(--ease) both; }
.hero__title span { display: block; }
.hero__lede { max-width: 56ch; color: var(--dove); font-size: clamp(1.05rem, 1.5vw, 1.3rem); animation: rise .9s .15s var(--ease) both; }
.hero__ctas { display: flex; flex-wrap: wrap; gap: 12px; animation: rise .9s .3s var(--ease) both; }
@keyframes rise { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }
.hero__side { display: grid; justify-items: center; gap: 24px; }
.seal-ring { position: relative; width: min(460px, 82vw); aspect-ratio: 1; display: grid; place-items: center; }
.seal-ring__img { width: 74%; height: auto; aspect-ratio: 1; border-radius: 50%; background: var(--white); box-shadow: 0 30px 80px rgba(0,0,0,.45); }
.seal-ring__text { position: absolute; inset: 0; will-change: transform; animation: spin 40s linear infinite; }
.seal-ring__text text { font-family: var(--font-body); font-size: 8.6px; font-weight: 600; letter-spacing: .22em; fill: var(--sky); text-transform: uppercase; }
@keyframes spin { to { transform: rotate(360deg); } }
.hero__facts { display: flex; gap: 28px; flex-wrap: wrap; justify-content: center; }
.hero__fact { display: grid; gap: 2px; text-align: center; }
.hero__fact strong { font-family: var(--font-display); font-size: 28px; font-weight: 800; letter-spacing: -0.03em; line-height: 1; }
.hero__fact span { font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: var(--dove); }

/* ---------- Ticker ---------- */
.ticker { background: var(--royal); color: var(--white); overflow: hidden; border-block: 1px solid rgba(255,255,255,.2); }
.ticker__track { display: flex; width: max-content; animation: ticker 48s linear infinite; }
.ticker:hover .ticker__track { animation-play-state: paused; }
.ticker__item { display: inline-flex; align-items: center; gap: 22px; padding: 14px 22px 14px 0; font-family: var(--font-display); font-weight: 700; font-size: 15px; letter-spacing: .1em; text-transform: uppercase; white-space: nowrap; }
.ticker__item::after { content: "✦"; color: var(--sky); font-size: 12px; }
@keyframes ticker { to { transform: translateX(-50%); } }

/* ---------- Stats ---------- */
.stats { display: grid; grid-template-columns: repeat(5, 1fr); border-block: 1px solid var(--line); }
.stat { padding: clamp(24px, 3vw, 40px) clamp(12px, 2vw, 28px); border-right: 1px solid var(--line); display: grid; gap: 8px; }
.stat:last-child { border-right: 0; }
.stat strong { font-family: var(--font-display); font-size: clamp(2.2rem, 4.2vw, 3.8rem); font-weight: 800; letter-spacing: -0.045em; line-height: 1; color: var(--royal); font-variant-numeric: tabular-nums; }
.stat span { font-size: 13px; color: var(--muted); line-height: 1.4; }
@media (max-width: 960px) { .stats { grid-template-columns: repeat(3, 1fr); } .stat:nth-child(3) { border-right: 0; } .stat:nth-child(n+4) { border-top: 1px solid var(--line); } }
@media (max-width: 560px) { .stats { grid-template-columns: repeat(2, 1fr); } .stat:nth-child(3) { border-right: 1px solid var(--line); } .stat:nth-child(2n) { border-right: 0; } .stat:nth-child(n+3) { border-top: 1px solid var(--line); } }

/* ---------- Program cards (bento) ---------- */
.programs { display: grid; grid-template-columns: repeat(12, 1fr); gap: 16px; }
.program { grid-column: span 6; position: relative; overflow: hidden; background: var(--white); border: 1px solid var(--line); padding: clamp(28px, 3vw, 44px); display: grid; align-content: space-between; gap: 40px; min-height: 300px; transition: transform .35s var(--ease), box-shadow .35s var(--ease); }
.program:hover { transform: translateY(-4px); box-shadow: 0 24px 60px rgba(14,20,46,.12); }
.program--wide { grid-column: span 12; background: var(--navy); color: var(--white); border-color: transparent; }
.program--wide .program__body { color: var(--dove); }
.program--wide .eyebrow { color: var(--sky); }
.program--wide::after { content: "Σ"; position: absolute; right: -2%; bottom: -30%; font-family: var(--font-display); font-weight: 800; font-size: 26rem; line-height: 1; color: rgba(255,255,255,.05); pointer-events: none; }
@media (min-width: 961px) { .program--third { grid-column: span 4; } }
@media (max-width: 960px) { .program { grid-column: span 12; min-height: 0; } }
.program__head { display: grid; gap: 14px; }
.program__title { font-size: clamp(1.5rem, 2.4vw, 2.1rem); }
.program__body { color: var(--muted); max-width: 48ch; }
.program__glyph { width: 52px; height: 52px; color: var(--royal); }
.program--third { padding: 0; gap: 0; }
.program__media { aspect-ratio: 16/10; overflow: hidden; background: var(--navy-2); }
.program__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.program:hover .program__media img { transform: scale(1.04); }
.program--third .program__head, .program--third .program__body { padding-inline: clamp(24px, 2.5vw, 32px); }
.program--third .program__head { padding-top: 24px; }
.program--third .program__body { padding-bottom: 28px; padding-top: 14px; }
.program--wide { grid-template-columns: 1.05fr .95fr; grid-template-rows: 1fr auto; align-items: end; padding: 0; gap: 0; min-height: 520px; }
.program__title--lg { font-size: clamp(2.2rem, 4.2vw, 3.6rem); font-weight: 800; letter-spacing: -0.035em; }
.program__body--lg { font-size: clamp(1.05rem, 1.4vw, 1.25rem); line-height: 1.55; max-width: 44ch; }
.program--wide .program__head { gap: 18px; }
.program__foot { grid-column: 1; grid-row: 2; display: grid; gap: 24px; padding: 20px clamp(28px, 3vw, 44px) clamp(28px, 3vw, 44px); }
.program__facts { display: flex; flex-wrap: wrap; gap: 28px; }
.program__facts div { display: grid; gap: 2px; }
.program__facts strong { font-family: var(--font-display); font-size: 1.7rem; font-weight: 800; letter-spacing: -0.03em; line-height: 1; color: var(--white); }
.program__facts span { font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--sky); }
.program__foot .btn { justify-self: start; }
.program--wide .program__photo { grid-column: 2; grid-row: 1 / span 2; width: 100%; height: 100%; min-height: 360px; object-fit: cover; object-position: center; -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 35%); mask-image: linear-gradient(90deg, transparent 0%, #000 35%); }
.program--wide .program__head { grid-column: 1; grid-row: 1; align-self: end; padding: clamp(28px, 3vw, 44px) clamp(28px, 3vw, 44px) 0; }
.program--wide .program__body { grid-column: 1; }
.program--wide::after { display: none; }
@media (max-width: 720px) {
  .program--wide { grid-template-columns: 1fr; }
  .program--wide .program__photo { grid-column: 1; grid-row: 1; min-height: 0; aspect-ratio: 16/10; height: auto; -webkit-mask-image: none; mask-image: none; }
  .program--wide .program__head { grid-row: 2; }
  .program--wide .program__foot { grid-row: 3; }
}
.program--wide .program__glyph { color: var(--sky); }

/* ---------- Feature split ---------- */
.feature { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 6vw, 96px); align-items: center; }
@media (max-width: 900px) { .feature { grid-template-columns: 1fr; } }
.feature__media { position: relative; }
.photo-frame { position: relative; aspect-ratio: 4/5; max-width: 100%; overflow: hidden; background: linear-gradient(160deg, var(--navy-2), var(--navy)); border: 1px solid var(--line-dark); }
.photo-frame--wide { aspect-ratio: 16/10; }
.photo-frame img { width: 100%; height: 100%; object-fit: cover; }
.photo-frame__placeholder { position: absolute; inset: 0; display: grid; place-items: center; text-align: center; padding: 24px; color: var(--dove); font-size: 13px; letter-spacing: .12em; text-transform: uppercase; }
.photo-frame__placeholder b { display: block; font-family: var(--font-display); font-size: clamp(3rem, 8vw, 6rem); color: rgba(255,255,255,.12); letter-spacing: -0.04em; line-height: 1; margin-bottom: 12px; text-transform: none; }
.photo-frame__tag { position: absolute; left: 20px; bottom: 20px; background: var(--white); color: var(--navy); font-family: var(--font-display); font-weight: 700; padding: 10px 14px; font-size: 14px; letter-spacing: -0.01em; }
.feature__content { display: grid; gap: 24px; }
.address-block { display: grid; gap: 4px; padding: 20px 24px; border-left: 3px solid var(--royal); background: var(--white); font-size: 15px; }
.band .address-block { background: rgba(255,255,255,.06); }
.address-block strong { font-family: var(--font-display); font-size: 18px; }

/* ---------- Events ---------- */
.events { display: grid; gap: 0; border-top: 1px solid var(--line); }
.event { display: grid; grid-template-columns: 120px 1fr auto; gap: clamp(16px, 3vw, 40px); align-items: center; padding: 26px 0; border-bottom: 1px solid var(--line); transition: background .2s; }
.event:hover { background: var(--white); }
@media (max-width: 720px) { .event { grid-template-columns: 90px 1fr; } .event > .btn { grid-column: 2; justify-self: start; } }
.event__date { display: grid; text-align: center; font-family: var(--font-display); line-height: 1; }
.event__date b { font-size: 2.4rem; font-weight: 800; letter-spacing: -0.04em; color: var(--royal); }
.event__date span { font-size: 12px; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); margin-top: 6px; font-family: var(--font-body); font-weight: 600; }
.event__body h3 { font-size: 1.35rem; margin-bottom: 6px; }
.event__desc { font-size: 14px; color: var(--muted); margin-top: 8px; max-width: 60ch; }
.event__meta { font-size: 14px; color: var(--muted); display: flex; flex-wrap: wrap; gap: 6px 18px; }
.pill { display: inline-flex; align-items: center; padding: 4px 10px; border-radius: 999px; font-size: 11px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; background: var(--royal); color: var(--white); }
.pill--outline { background: transparent; border: 1px solid var(--line); color: var(--muted); }
.band .pill--outline { border-color: var(--line-dark); color: var(--dove); }

/* ---------- Publications ---------- */
.pubs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 900px) { .pubs { grid-template-columns: 1fr; } }
.pub { display: grid; grid-template-columns: 88px 1fr; gap: 20px; align-items: center; padding: 22px; background: rgba(255,255,255,.06); border: 1px solid var(--line-dark); transition: background .25s, transform .3s var(--ease); }
.pub:hover { background: rgba(255,255,255,.1); transform: translateY(-3px); }
.pub__cover { aspect-ratio: 3/4; background: linear-gradient(160deg, var(--electric), var(--royal)); display: grid; place-items: center; text-align: center; line-height: 1.05; font-family: var(--font-display); font-weight: 800; font-size: 22px; letter-spacing: -0.02em; color: var(--white); box-shadow: 0 12px 30px rgba(0,0,0,.35); }
.pub__cover--light { background: var(--white); color: var(--royal); }
.pub h3 { font-size: 1.2rem; margin-bottom: 4px; }
.pub p { font-size: 14px; color: var(--dove); }

/* ---------- CTA band ---------- */
.cta { position: relative; overflow: hidden; }
.cta::before { content: ""; position: absolute; inset: 0; background: radial-gradient(70% 100% at 100% 0%, rgba(255,255,255,.18), transparent 60%); pointer-events: none; }
.cta .wrap { display: grid; grid-template-columns: 1.3fr .7fr; gap: 40px; align-items: center; position: relative; }
@media (max-width: 900px) { .cta .wrap { grid-template-columns: 1fr; } }
.cta__actions { display: flex; flex-wrap: wrap; gap: 12px; justify-content: flex-end; }
@media (max-width: 900px) { .cta__actions { justify-content: flex-start; } }

/* ---------- Page hero (interior) ---------- */
.page-hero { position: relative; background: var(--navy); color: var(--white); overflow: hidden; }
.page-hero::before { content: ""; position: absolute; inset: 0; background: radial-gradient(60% 80% at 100% 0%, rgba(79,123,255,.4), transparent 60%), linear-gradient(180deg, #0B2152, var(--navy)); }
.page-hero .wrap { position: relative; padding-block: clamp(56px, 8vw, 110px); display: grid; gap: 20px; }
.page-hero__title { font-size: clamp(2.6rem, 6.5vw, 5.6rem); font-weight: 800; letter-spacing: -0.04em; line-height: .96; }
.page-hero__lede { max-width: 62ch; color: var(--dove); font-size: clamp(1.05rem, 1.5vw, 1.25rem); }
.crumbs { display: flex; gap: 10px; font-size: 13px; color: var(--dove); letter-spacing: .04em; }
.crumbs a:hover { color: var(--white); }

/* ---------- Timeline ---------- */
.timeline { display: grid; gap: 0; position: relative; }
.timeline::before { content: ""; position: absolute; left: clamp(70px, 10vw, 140px); top: 0; bottom: 0; width: 1px; background: var(--line); }
.tl { display: grid; grid-template-columns: clamp(70px, 10vw, 140px) 1fr; gap: clamp(20px, 4vw, 48px); padding-block: 28px; position: relative; }
.tl__year { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.4rem, 2.6vw, 2.2rem); letter-spacing: -0.04em; color: var(--royal); line-height: 1; font-variant-numeric: tabular-nums; }
.tl__body { position: relative; padding-left: 8px; display: grid; gap: 8px; }
.tl__body::before { content: ""; position: absolute; left: calc(-1 * clamp(20px, 4vw, 48px) - 5px); top: 8px; width: 11px; height: 11px; border-radius: 50%; background: var(--royal); box-shadow: 0 0 0 5px var(--ivory); }
.tl__body h3 { font-size: 1.3rem; }
.tl__body p { color: var(--muted); max-width: 62ch; }

/* ---------- People ---------- */
.people { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 1080px) { .people { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 720px) { .people { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 440px) { .people { grid-template-columns: 1fr; } }
.person { background: var(--white); border: 1px solid var(--line); padding: 18px; display: grid; gap: 14px; transition: transform .3s var(--ease), box-shadow .3s var(--ease); }
.person:hover { transform: translateY(-3px); box-shadow: 0 16px 40px rgba(14,20,46,.1); }
.person__photo { aspect-ratio: 1; background: linear-gradient(160deg, var(--navy-2), var(--navy)); display: grid; place-items: center; font-family: var(--font-display); font-weight: 800; font-size: 2.4rem; color: var(--sky); letter-spacing: -0.04em; overflow: hidden; }
.person__photo img { width: 100%; height: 100%; object-fit: cover; }
.person__role { font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: var(--royal); font-weight: 600; }
.person__name { font-family: var(--font-display); font-size: 1.15rem; font-weight: 700; letter-spacing: -0.02em; margin-top: 4px; }
.person--lead { grid-column: span 2; grid-row: span 2; }
.person--lead .person__photo { aspect-ratio: 4/3; font-size: 4rem; }
.person--lead .person__name { font-size: 1.8rem; }
@media (max-width: 440px) { .person--lead { grid-column: span 1; } }

/* ---------- Founders ---------- */
.founders { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 720px) { .founders { grid-template-columns: 1fr; } }
.founder { display: grid; gap: 14px; }
.founder__photo { aspect-ratio: 4/5; background: linear-gradient(160deg, #1a2a7a, var(--navy)); border: 1px solid var(--line-dark); display: grid; place-items: center; font-family: var(--font-display); font-weight: 800; font-size: 5rem; color: rgba(255,255,255,.15); letter-spacing: -0.05em; overflow: hidden; }
.founder__photo img { width: 100%; height: 100%; object-fit: cover; }
.founder h3 { font-size: 1.3rem; }
.founder p { font-size: 14px; color: var(--dove); }

/* ---------- Checklist / steps ---------- */
.steps { display: grid; gap: 0; counter-reset: step; border-top: 1px solid var(--line); }
.step { display: grid; grid-template-columns: 72px 1fr; gap: 20px; padding: 28px 0; border-bottom: 1px solid var(--line); }
.step::before { counter-increment: step; content: counter(step, decimal-leading-zero); font-family: var(--font-display); font-weight: 800; font-size: 2.2rem; letter-spacing: -0.04em; color: var(--royal); line-height: 1; }
.step h3 { font-size: 1.3rem; margin-bottom: 6px; }
.step p { color: var(--muted); max-width: 60ch; }
.req { display: grid; gap: 12px; padding: 28px; background: var(--white); border: 1px solid var(--line); }
.req h3 { font-size: 1.3rem; }
.req ul { margin: 0; padding-left: 18px; color: var(--muted); display: grid; gap: 8px; }
.req li::marker { color: var(--royal); }

/* ---------- Forms ---------- */
.form { display: grid; gap: 16px; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 640px) { .form__row { grid-template-columns: 1fr; } }
.field { display: grid; gap: 6px; }
.field label { font-size: 12px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.field input, .field select, .field textarea { font: inherit; padding: 14px 16px; border: 1px solid var(--line); background: var(--white); color: var(--ink); border-radius: var(--radius); width: 100%; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--royal); box-shadow: 0 0 0 3px rgba(31,73,214,.18); }
.field textarea { min-height: 140px; resize: vertical; }
.form__note { font-size: 14px; color: var(--muted); }
.form__status { font-weight: 600; color: var(--royal); }
.form__status:empty { display: none; }

/* ---------- Info cards ---------- */
.info { display: grid; gap: 10px; padding: 28px; background: var(--white); border: 1px solid var(--line); }
.band .info { background: rgba(255,255,255,.06); border-color: var(--line-dark); }
.info h3 { font-size: 1.15rem; }
.info p, .info a { color: var(--muted); font-size: 15px; }
.band .info p, .band .info a { color: var(--dove); }
.info a:hover { color: var(--royal); }
.band .info a:hover { color: var(--white); }
.info__icon { width: 36px; height: 36px; color: var(--royal); }
.band .info__icon { color: var(--sky); }

/* ---------- Pay tiles ---------- */
.tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 900px) { .tiles { grid-template-columns: 1fr; } }
.tile { display: grid; gap: 18px; padding: clamp(28px, 3vw, 40px); background: var(--white); border: 1px solid var(--line); align-content: space-between; min-height: 320px; }
.tile--dark { background: var(--navy); color: var(--white); border-color: transparent; }
.tile--dark p { color: var(--dove); }
.tile h3 { font-size: 1.6rem; }
.tile p { color: var(--muted); }
.tile__amounts { display: flex; flex-wrap: wrap; gap: 8px; }
.tile__amounts button { padding: 8px 14px; border-radius: 999px; border: 1px solid var(--line); background: transparent; color: inherit; font-weight: 600; font-size: 14px; }
.tile__amounts button[aria-pressed="true"], .tile__amounts button:hover { background: var(--royal); color: var(--white); border-color: var(--royal); }

/* ---------- Footer ---------- */
.footer { background: var(--navy); color: var(--dove); border-top: 1px solid var(--line-dark); }
.footer__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding-block: clamp(48px, 6vw, 80px); }
@media (max-width: 960px) { .footer__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .footer__grid { grid-template-columns: 1fr; } }
.footer h4 { color: var(--white); font-size: 13px; letter-spacing: .16em; text-transform: uppercase; font-family: var(--font-body); font-weight: 600; margin-bottom: 16px; }
.footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; font-size: 15px; }
.footer a:hover { color: var(--white); }
.footer__brand { display: grid; gap: 16px; max-width: 40ch; font-size: 15px; }
.footer__motto { font-family: var(--font-serif); font-style: italic; font-size: 1.5rem; color: var(--white); line-height: 1.2; }
.footer__bottom { border-top: 1px solid var(--line-dark); padding-block: 22px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; font-size: 13px; }
.social { display: flex; gap: 10px; }
.social a { width: 40px; height: 40px; border: 1px solid var(--line-dark); border-radius: 999px; display: grid; place-items: center; color: var(--white); transition: background .2s, border-color .2s; }
.social a:hover { background: var(--royal); border-color: var(--royal); }
.social svg { width: 18px; height: 18px; }
.subscribe { display: flex; gap: 8px; }
.subscribe input { flex: 1; min-width: 0; padding: 12px 14px; border: 1px solid var(--line-dark); background: rgba(255,255,255,.06); color: var(--white); border-radius: 999px; font: inherit; }
.subscribe input::placeholder { color: var(--dove); }
.subscribe input:focus { outline: none; border-color: var(--sky); }

/* ---------- Misc ---------- */
.divider { height: 1px; background: var(--line); }
.band .divider { background: var(--line-dark); }
.callout { display: grid; gap: 10px; padding: 24px 28px; border-left: 3px solid var(--royal); background: var(--white); }
.band .callout { background: rgba(255,255,255,.06); }
.callout strong { font-family: var(--font-display); font-size: 1.1rem; }
.callout p { color: var(--muted); font-size: 15px; }
.band .callout p { color: var(--dove); }
.partners { display: flex; flex-wrap: wrap; gap: 10px; }
.partners span { padding: 10px 16px; border: 1px solid var(--line); background: var(--white); font-size: 14px; font-weight: 500; }
.skip { position: absolute; left: -9999px; top: 0; background: var(--white); color: var(--navy); padding: 12px 16px; z-index: 100; }
.skip:focus { left: 16px; top: 16px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- Photo components ---------- */
.photo-frame img { position: relative; z-index: 1; }
.photo-frame figcaption { position: absolute; left: 20px; bottom: 20px; z-index: 2; background: var(--white); color: var(--navy); font-family: var(--font-display); font-weight: 700; padding: 10px 14px; font-size: 14px; letter-spacing: -0.01em; max-width: calc(100% - 40px); }
.photo-frame--mono img { filter: grayscale(1) contrast(1.05); }
.strip { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
@media (max-width: 960px) { .strip { grid-template-columns: repeat(3, 1fr); } .strip > :nth-child(n+7) { display: none; } }
@media (max-width: 560px) { .strip { grid-template-columns: repeat(2, 1fr); } .strip > :nth-child(n+5) { display: none; } }
.strip figure { margin: 0; aspect-ratio: 4/5; overflow: hidden; background: var(--navy-2); position: relative; }
.strip figure:nth-child(3n) { aspect-ratio: 4/5; }
.strip img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.strip figure:hover img { transform: scale(1.04); }
.strip figcaption { position: absolute; left: 0; right: 0; bottom: 0; padding: 32px 14px 12px; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; color: var(--white); background: linear-gradient(transparent, rgba(10,26,63,.85)); }
.flyers { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 960px) { .flyers { grid-template-columns: repeat(2, 1fr); } }
.flyer { display: grid; gap: 12px; }
.flyer__img { aspect-ratio: 4/5; overflow: hidden; background: var(--white); border: 1px solid var(--line); }
.flyer__img img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.flyer h3 { font-size: 1.05rem; }
.flyer p { font-size: 13px; color: var(--muted); }
.band .flyer p { color: var(--dove); }
.band .flyer__img { border-color: var(--line-dark); }
.event__flyer { width: 120px; aspect-ratio: 4/5; object-fit: cover; object-position: top; border: 1px solid var(--line); }
.event--featured { grid-template-columns: 120px 1fr auto; background: var(--white); padding: 26px; margin-bottom: 8px; border: 1px solid var(--line); }
@media (max-width: 720px) { .event--featured { grid-template-columns: 90px 1fr; } .event__flyer { width: 90px; } }
.phone { width: min(320px, 100%); margin-inline: auto; border-radius: 36px; padding: 12px; background: var(--navy); box-shadow: 0 40px 80px rgba(10,26,63,.35); }
.phone__screen { border-radius: 26px; overflow: hidden; aspect-ratio: 9/17; background: #fff; }
.phone__screen img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.bio { columns: 2; column-gap: 40px; color: var(--muted); font-size: 15px; }
.bio p { break-inside: avoid; margin-bottom: 1em; }
@media (max-width: 720px) { .bio { columns: 1; } }
.doc { display: grid; grid-template-columns: 48px 1fr; gap: 16px; align-items: center; padding: 18px 20px; background: var(--white); border: 1px solid var(--line); transition: border-color .2s; }
.doc:hover { border-color: var(--royal); }
.doc__icon { width: 48px; height: 56px; background: var(--royal); color: var(--white); display: grid; place-items: center; font-family: var(--font-display); font-weight: 800; font-size: 12px; letter-spacing: .05em; }
.doc h3 { font-size: 1.05rem; }
.doc p { font-size: 13px; color: var(--muted); }

/* ---------- Sigmaversaries ---------- */
.sigmav-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
@media (max-width: 960px) { .sigmav-list { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .sigmav-list { grid-template-columns: 1fr; } }
.sigmav { display: grid; grid-template-columns: 56px 1fr; grid-template-rows: auto auto; column-gap: 16px; align-items: center; padding: 16px 18px; background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.25); }
.sigmav__day { grid-row: 1 / span 2; display: grid; text-align: center; font-family: var(--font-display); line-height: 1; font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--sky); }
.sigmav__day b { font-size: 1.8rem; font-weight: 800; letter-spacing: -0.04em; color: var(--white); margin-bottom: 4px; }
.sigmav__name { font-family: var(--font-display); font-weight: 700; font-size: 1.1rem; letter-spacing: -0.01em; }
.sigmav__years { font-size: 13px; color: var(--sky); }

/* ---------- Black Spend ---------- */
.bs-card { display: grid; gap: 18px; padding: clamp(24px, 3vw, 36px); background: var(--navy); color: var(--white); border: 1px solid var(--line-dark); }
.bs-card__top { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; flex-wrap: wrap; }
.bs-card__label { display: block; font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--sky); margin-bottom: 6px; }
.bs-card__total { font-family: var(--font-display); font-size: clamp(2.6rem, 5vw, 4rem); font-weight: 800; letter-spacing: -0.045em; line-height: 1; font-variant-numeric: tabular-nums; }
.bs-card__pct { text-align: right; font-family: var(--font-display); font-weight: 800; font-size: 1.6rem; letter-spacing: -0.03em; line-height: 1; }
.bs-card__pct small { display: block; font-family: var(--font-body); font-weight: 500; font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--sky); margin-top: 4px; }
.bs-bar { height: 14px; border-radius: 999px; background: rgba(255,255,255,.14); overflow: hidden; }
.bs-bar__fill { display: block; height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--electric), var(--sky)); transition: width 1.2s var(--ease); }
.bs-card__row { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 14px; color: var(--dove); }
.bs-card__row b { color: var(--white); }
.bs-card__over { color: var(--sky); font-weight: 600; }
.bs-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; padding-top: 18px; border-top: 1px solid var(--line-dark); }
@media (max-width: 480px) { .bs-stats { grid-template-columns: 1fr; } }
.bs-stats div { display: grid; gap: 4px; }
.bs-stats strong { font-family: var(--font-display); font-size: 1.5rem; font-weight: 800; letter-spacing: -0.03em; line-height: 1; font-variant-numeric: tabular-nums; }
.bs-stats span { font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--dove); }
.bs-card__note { font-size: 12px; color: var(--dove); }