/* ARB 2026 — quiet editorial redesign */
:root {
  --bg: #f1f0eb;
  --bg-2: #111a20;
  --surface: #e8e7e1;
  --line: rgba(19, 28, 34, .14);
  --text: #121b20;
  --muted: #687278;
  --ice: #1c65f2;
  --ice-2: #9dccff;
  --ice-deep: #174fc0;
  --red: #f04438;
  --radius: 3px;
  --radius-sm: 2px;
  --maxw: 1280px;
  --shadow: 0 30px 80px -42px rgba(8, 16, 22, .45);
  --font-head: "Manrope", system-ui, sans-serif;
  --font-body: "DM Sans", system-ui, sans-serif;
}

body {
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.6;
}

::selection { background: var(--ice); color: #fff; }
.container { padding-inline: clamp(22px, 4.5vw, 72px); }
.section { padding: clamp(88px, 12vw, 164px) 0; }
.section-dark {
  padding: clamp(88px, 12vw, 164px) 0;
  background: var(--bg-2);
  border: 0;
  color: #f7f8f5;
}

h1, h2, h3, h4 { letter-spacing: -.045em; }
h2 { font-size: clamp(2.3rem, 5vw, 4.5rem); font-weight: 600; }
h3 { font-size: 1.65rem; }
.eyebrow {
  color: var(--ice);
  letter-spacing: .19em;
  font-size: .68rem;
  margin-bottom: 20px;
}
.lead { color: var(--muted); font-size: clamp(1.05rem, 1.6vw, 1.25rem); }

/* Header */
.site-header { padding-top: 8px; }
.site-header::before {
  background: linear-gradient(180deg, rgba(8, 15, 20, .72), transparent);
}
.site-header.scrolled {
  padding-top: 0;
  background: rgba(241, 240, 235, .88);
  border-bottom-color: var(--line);
  box-shadow: 0 8px 40px rgba(17, 26, 32, .04);
}
.header-inner { height: 82px; }
.brand { gap: 10px; }
.brand-mark {
  width: 46px;
  height: 46px;
  flex: 0 0 46px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, .35);
  border-radius: 50%;
  background: #0b0b0b;
}
.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.brand-text strong { font-size: 1.05rem; letter-spacing: .08em; }
.brand-text em { font-size: .59rem; letter-spacing: .24em; }
.site-header.scrolled .brand,
.site-header.scrolled .nav a { color: var(--text); }
.site-header.scrolled .brand-mark { border-color: rgba(18, 27, 32, .18); }
.site-header.scrolled .brand-text em { color: var(--muted); }
.nav { gap: 2px; }
.nav a {
  padding: 8px 13px;
  border-radius: 0;
  font-size: .82rem;
  letter-spacing: .01em;
}
.nav a:not(.nav-cta)::after {
  content: "";
  display: block;
  width: 0;
  height: 1px;
  margin-top: 3px;
  background: currentColor;
  transition: width .25s ease;
}
.nav a:hover::after { width: 100%; }
.nav a.nav-cta {
  margin-left: 12px;
  padding: 11px 18px;
  border: 1px solid rgba(255, 255, 255, .45);
  background: transparent;
}
.site-header.scrolled .nav a.nav-cta {
  border-color: var(--text);
  color: var(--text);
}
.nav a.nav-cta:hover,
.site-header.scrolled .nav a.nav-cta:hover {
  color: #fff;
  background: var(--text);
  border-color: var(--text);
}

/* Hero */
.hero {
  min-height: min(940px, 100svh);
  align-items: center;
  background: #0c151b;
}
.hero-img {
  object-position: 62% 45%;
  filter: saturate(.76) contrast(1.05);
  transform: scale(1.025);
}
.hero-overlay {
  background:
    linear-gradient(90deg, rgba(7, 13, 18, .93) 0%, rgba(7, 13, 18, .7) 39%, rgba(7, 13, 18, .04) 76%),
    linear-gradient(180deg, rgba(7, 13, 18, .25), transparent 48%, rgba(7, 13, 18, .72));
}
.hero-content {
  max-width: var(--maxw);
  padding-top: 146px;
  padding-bottom: 100px;
}
.hero-index {
  display: flex;
  align-items: center;
  gap: 13px;
  margin-bottom: 34px;
  color: rgba(255, 255, 255, .6);
  font-family: var(--font-head);
  font-size: .66rem;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
}
.hero-index span { width: 48px; height: 1px; background: rgba(255, 255, 255, .45); }
.hero-eyebrow {
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: #d9e9f8;
  font-size: .68rem;
  margin-bottom: 17px;
}
.hero-title {
  max-width: 800px;
  font-size: clamp(4rem, 9vw, 8.2rem);
  font-weight: 600;
  line-height: .87;
  letter-spacing: -.065em;
  color: #fff;
}
.hero-title .accent {
  background: none;
  color: rgba(255, 255, 255, .55);
  -webkit-text-stroke: 1px rgba(255, 255, 255, .18);
}
.hero-sub {
  max-width: 570px;
  margin-top: 34px;
  color: rgba(255, 255, 255, .72);
  font-size: clamp(1rem, 1.5vw, 1.16rem);
}
.hero-actions { margin-top: 38px; }
.hero-motto {
  margin-top: 38px;
  padding-left: 18px;
  border-left: 1px solid var(--red);
  color: rgba(255, 255, 255, .65);
  font-size: .88rem;
  font-style: normal;
}
.hero-note {
  position: absolute;
  z-index: 3;
  right: clamp(22px, 4.5vw, 72px);
  bottom: 36px;
  display: flex;
  gap: 28px;
  color: rgba(255, 255, 255, .42);
  font-family: var(--font-head);
  font-size: .6rem;
  letter-spacing: .15em;
  text-transform: uppercase;
}
.hero-scroll { display: none; }

/* New Atlantic project */
.atlantic-project {
  position: relative;
  padding: clamp(88px, 12vw, 164px) 0;
  overflow: hidden;
  background: #fff;
}
.atlantic-project::after {
  content: "ATLANTİK";
  position: absolute;
  right: -1vw;
  bottom: -3vw;
  color: rgba(18, 27, 32, .025);
  font: 800 min(15vw, 210px)/1 var(--font-head);
  letter-spacing: -.07em;
  pointer-events: none;
}
.atlantic-project-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(320px, .88fr);
  gap: clamp(48px, 9vw, 128px);
  align-items: center;
}
.atlantic-project-media { position: relative; z-index: 1; }
.atlantic-project-media video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: var(--text);
  box-shadow: var(--shadow);
}
.atlantic-project-caption {
  display: block;
  margin-top: 14px;
  color: var(--muted);
  font: 600 .64rem/1.4 var(--font-head);
  letter-spacing: .15em;
  text-transform: uppercase;
}
.atlantic-project-copy { position: relative; z-index: 1; }
.atlantic-project-copy h2 {
  max-width: 660px;
  font-size: clamp(2.4rem, 5vw, 4.8rem);
}
.atlantic-project-lead {
  max-width: 590px;
  margin-top: 28px;
  color: var(--muted);
  font-size: clamp(1.05rem, 1.7vw, 1.3rem);
}
.atlantic-project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin: 34px 0 24px;
  padding-block: 18px;
  border-block: 1px solid var(--line);
}
.atlantic-project-meta span {
  color: var(--text);
  font: 600 .68rem/1.4 var(--font-head);
  letter-spacing: .1em;
  text-transform: uppercase;
}

/* Featured media and book */
.featured-stories {
  padding: clamp(88px, 11vw, 148px) 0;
  background: #dce8ee;
}
.featured-stories-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 30px;
  margin-bottom: 48px;
}
.featured-stories-head .eyebrow { margin: 0 0 8px; }
.featured-stories-head h2 { max-width: 700px; }
.featured-stories-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid rgba(18, 27, 32, .12);
  background: rgba(18, 27, 32, .12);
}
.feature-tile {
  position: relative;
  min-width: 0;
  overflow: hidden;
  background: var(--bg);
}
.feature-tile-copy { padding: 32px 34px 28px; }
.feature-label {
  display: block;
  margin-bottom: 11px;
  color: var(--ice);
  font: 700 .62rem/1.3 var(--font-head);
  letter-spacing: .17em;
  text-transform: uppercase;
}
.feature-tile h3 {
  max-width: 540px;
  font-size: clamp(1.4rem, 2.5vw, 2.25rem);
  font-weight: 600;
}
.feature-video {
  display: flex;
  min-height: 470px;
  flex-direction: column;
  justify-content: space-between;
  background: #111a20;
  color: #fff;
}
.feature-video-light { background: #f8f8f4; color: var(--text); }
.feature-embed {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #050708;
}
.feature-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}
.feature-talk {
  display: grid;
  grid-template-columns: .88fr 1.12fr;
  min-height: 540px;
  background: #f2d8b5;
}
.feature-talk-image { min-height: 100%; overflow: hidden; }
.feature-talk-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.82);
}
.feature-talk-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(30px, 4vw, 54px);
}
.feature-talk-copy p {
  margin: 22px 0;
  color: #5f5a52;
  font-size: .95rem;
}
.feature-link {
  width: fit-content;
  color: var(--text);
  font-weight: 600;
  font-size: .84rem;
  text-decoration: underline;
  text-decoration-color: rgba(18, 27, 32, .25);
  text-underline-offset: 6px;
}
.feature-book {
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  align-items: center;
  min-height: 540px;
  padding: clamp(34px, 5vw, 66px);
  background:
    radial-gradient(circle at 90% 10%, rgba(255, 255, 255, .9), transparent 38%),
    #b9d8ea;
}
.feature-book-copy p {
  max-width: 420px;
  margin: 20px 0 28px;
  color: #4d6572;
}
.feature-book-cover {
  width: min(220px, 100%);
  justify-self: end;
  height: auto;
  object-fit: cover;
  box-shadow: 25px 30px 45px -24px rgba(13, 38, 53, .6);
  transform: rotate(2deg);
}

/* Buttons */
.btn {
  min-height: 52px;
  padding: 14px 24px;
  border-radius: 0;
  font-size: .82rem;
  letter-spacing: .03em;
}
.btn-primary {
  background: var(--ice);
  box-shadow: none;
}
.btn-primary:hover {
  background: var(--ice-deep);
  transform: translateY(-2px);
  box-shadow: none;
}
.btn-ghost {
  background: transparent;
  border-color: rgba(255, 255, 255, .42);
}
.btn-ghost:hover { background: #fff; color: var(--text); }
.link-arrow, .card-link {
  color: var(--text);
  text-decoration: underline;
  text-decoration-color: rgba(18, 27, 32, .25);
  text-underline-offset: 6px;
}

/* Facts */
.stats {
  padding: 0;
  background: var(--ice);
  border: 0;
  color: #fff;
}
.stats-grid { gap: 0; max-width: none; padding: 0; }
.stat {
  min-height: 200px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 32px 18px;
  border-radius: 0;
  border-right: 1px solid rgba(255, 255, 255, .22);
}
.stat:last-child { border-right: 0; }
.stat-num {
  background: none;
  color: #fff;
  font-size: clamp(2.25rem, 4vw, 4rem);
  font-weight: 500;
}
.stat-label {
  color: rgba(255, 255, 255, .7);
  font-size: .7rem;
  letter-spacing: .1em;
  text-transform: uppercase;
}

/* Story */
.story { background: var(--bg); }
.story-grid { grid-template-columns: .9fr 1.1fr; gap: clamp(48px, 9vw, 126px); }
.portrait-frame {
  aspect-ratio: 4 / 5.1;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  background: #d9e3e9;
}
.portrait-frame::after {
  content: "90° S  ·  ANTARKTİKA";
  position: absolute;
  right: -1px;
  bottom: 0;
  padding: 12px 16px;
  background: var(--bg);
  color: var(--muted);
  font-size: .62rem;
  font-weight: 600;
  letter-spacing: .13em;
}
.portrait-frame img { object-position: 60% center; filter: saturate(.72); }
.story-text { max-width: 650px; }
.story-text h2 { max-width: 580px; }
.story-text p { color: var(--muted); font-size: 1.02rem; }
.story-text p b { color: var(--text); font-weight: 600; }
.story-text .link-arrow { margin-top: 28px; }

/* Timeline */
.timeline { position: relative; overflow: hidden; }
.timeline::before {
  content: "ARB";
  position: absolute;
  right: -2vw;
  bottom: -10vw;
  color: rgba(255, 255, 255, .025);
  font: 800 min(38vw, 540px)/1 var(--font-head);
  letter-spacing: -.09em;
}
.timeline .eyebrow { color: var(--ice-2); }
.tl { max-width: 900px; margin-top: 64px; }
.tl::before { left: 124px; width: 1px; background: rgba(255, 255, 255, .16); }
.tl li {
  grid-template-columns: 124px 1fr;
  gap: 34px;
  min-height: 72px;
  padding: 16px 0;
}
.tl-year { color: rgba(255, 255, 255, .45); font-size: .82rem; }
.tl-body { color: rgba(255, 255, 255, .68); padding-left: 32px; }
.tl-body::before {
  left: -8px;
  width: 7px;
  height: 7px;
  border: 0;
  background: #5e6b73;
}
.tl li.highlight .tl-body::before { box-shadow: 0 0 0 7px rgba(240, 68, 56, .12); }

/* Expedition cards */
.cards {
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 70px;
  background: var(--line);
  border: 1px solid var(--line);
}
.card {
  min-height: 430px;
  display: flex;
  flex-direction: column;
  padding: 34px;
  border: 0;
  border-radius: 0;
  background: var(--bg);
}
.card::after { display: none; }
.card:hover { z-index: 1; transform: translateY(-8px); border: 0; box-shadow: var(--shadow); }
.card.featured { background: var(--text); color: #fff; }
.card-number {
  display: block;
  margin-bottom: auto;
  color: #9ca3a6;
  font: 500 .68rem/1 var(--font-head);
  letter-spacing: .12em;
}
.card-badge {
  width: fit-content;
  padding: 0;
  margin-bottom: 20px;
  border-radius: 0;
  background: none !important;
  color: var(--ice) !important;
  font-size: .63rem;
}
.card.featured .card-badge { color: var(--ice-2) !important; }
.card h3 { font-size: clamp(1.65rem, 3vw, 2.4rem); font-weight: 600; }
.card-meta { color: var(--ice); margin: 10px 0 18px; font-size: .75rem; }
.card p { color: var(--muted); font-size: .9rem; }
.card.featured p { color: rgba(255, 255, 255, .6); }
.card.featured .card-link { color: #fff; text-decoration-color: rgba(255, 255, 255, .3); }
.card-link { margin-top: 28px; }

.expedition-video {
  display: grid;
  grid-template-columns: minmax(220px, .42fr) 1fr;
  gap: clamp(28px, 6vw, 80px);
  align-items: start;
  margin-top: clamp(72px, 10vw, 128px);
  padding-top: 28px;
  border-top: 1px solid var(--line);
}
.expedition-video-head span {
  color: var(--ice);
  font-family: var(--font-head);
  font-size: .66rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
}
.expedition-video-head p {
  max-width: 300px;
  margin-top: 12px;
  font: 600 clamp(1.35rem, 2.6vw, 2.2rem)/1.18 var(--font-head);
  letter-spacing: -.04em;
}
.expedition-video video {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--text);
  object-fit: cover;
  box-shadow: var(--shadow);
}

.antarctica-map {
  margin-top: clamp(88px, 12vw, 156px);
}
.antarctica-map-head {
  display: grid;
  grid-template-columns: .42fr 1fr;
  column-gap: clamp(28px, 6vw, 80px);
  align-items: end;
  margin-bottom: 34px;
}
.antarctica-map-head span {
  grid-row: 1 / 3;
  align-self: start;
  color: var(--ice);
  font-family: var(--font-head);
  font-size: .66rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
}
.antarctica-map-head h3 {
  font-size: clamp(1.8rem, 4vw, 3.5rem);
  font-weight: 600;
}
.antarctica-map-head p {
  max-width: 680px;
  margin-top: 12px;
  color: var(--muted);
}
.antarctica-map-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 7;
  overflow: hidden;
  background: #dbe7ed;
  box-shadow: var(--shadow);
}
.antarctica-map-frame iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

/* Book */
.book { background: #dbe7ed; color: var(--text); }
.book-grid { grid-template-columns: .9fr 1.1fr; }
.book-cover-image {
  width: min(330px, 72vw);
  height: auto;
  box-shadow: 28px 40px 55px -28px rgba(13, 31, 43, .45);
  transform: rotateY(-12deg) rotateX(2deg);
  transition: transform .5s var(--ease);
}
.book-cover:hover .book-cover-image { transform: rotateY(-5deg) rotateX(1deg); }
.book-3d {
  position: relative;
  width: min(320px, 70vw);
  border: 0;
  border-left: 9px solid rgba(8, 16, 22, .4);
  border-radius: 1px 5px 5px 1px;
  background:
    linear-gradient(180deg, transparent 50%, rgba(8, 16, 22, .92)),
    radial-gradient(circle at 70% 22%, rgba(157, 204, 255, .75), transparent 30%),
    linear-gradient(145deg, #24445b, #91b3c6 48%, #e6eef0);
  box-shadow: 28px 40px 55px -28px rgba(13, 31, 43, .45);
}
.book-3d::after {
  content: "";
  position: absolute;
  inset: 8% 12% auto auto;
  width: 42%;
  aspect-ratio: 1;
  border: 1px solid rgba(255, 255, 255, .35);
  border-radius: 50%;
}
.book-kicker {
  position: absolute;
  top: 28px;
  left: 26px;
  font-size: .58rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .75);
}
.book-title { position: relative; z-index: 1; font-size: 2.25rem; }
.book-sub { position: relative; z-index: 1; color: var(--ice-2); }
.book-text p { color: var(--muted); max-width: 580px; }
.book .eyebrow { color: var(--ice); }

/* Speaking */
.speak { background: #fff; }
.speak-inner { max-width: 1100px; }
.speak-topics {
  gap: 0;
  margin: 68px 0 46px;
  border-block: 1px solid var(--line);
}
.topic {
  min-height: 210px;
  padding: 36px;
  border: 0;
  border-right: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
}
.topic:last-child { border-right: 0; }
.topic:hover { transform: none; background: var(--bg); }
.topic h4 { color: var(--text); font-size: 1.25rem; }
.topic p { color: var(--muted); }

/* Blog */
#haberler { background: var(--bg); }
.sec-head { margin-bottom: 56px; }
.posts-grid { gap: 1px; background: var(--line); }
.post-card {
  border: 0;
  border-radius: 0;
  background: var(--bg);
}
.post-card:hover { transform: none; border: 0; box-shadow: none; }
.post-card-media { aspect-ratio: 4/3; }
.post-card-media img { filter: saturate(.72); }
.post-card:hover .post-card-media img { transform: scale(1.025); }
.post-card-body { padding: 26px 4px 34px 26px; }
.post-date { color: var(--ice); font-size: .68rem; }
.post-card-body h3 { color: var(--text); font-weight: 600; }
.post-card-body p { color: var(--muted); }

/* Support */
.support {
  position: relative;
  background: var(--ice);
  color: #fff;
  overflow: hidden;
}
.support::before {
  content: "90°";
  position: absolute;
  left: -2vw;
  top: -8vw;
  color: rgba(255, 255, 255, .08);
  font: 800 min(32vw, 430px)/1 var(--font-head);
}
.support-inner { position: relative; max-width: 850px; }
.support-index {
  display: block;
  margin-bottom: 24px;
  color: rgba(255, 255, 255, .65);
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.support-inner p { color: rgba(255, 255, 255, .72); }
.support .btn-primary { background: #fff; color: var(--text); }
.support .btn-primary:hover { background: var(--text); color: #fff; }

/* Contact */
.contact { background: var(--bg-2); color: #fff; }
.contact-grid { gap: clamp(50px, 10vw, 140px); }
.contact-info > p:not(.eyebrow) { color: rgba(255, 255, 255, .55); }
.contact-list li { border-bottom-color: rgba(255, 255, 255, .12); }
.contact-list span { color: rgba(255, 255, 255, .38); }
.contact-list a { color: #fff; }
.contact-form {
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
}
.contact-form label { color: rgba(255, 255, 255, .5); }
.contact-form input,
.contact-form textarea {
  padding: 13px 0;
  border: 0;
  border-bottom: 1px solid rgba(255, 255, 255, .22);
  border-radius: 0;
  background: transparent;
  color: #fff;
}
.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--ice-2);
  box-shadow: none;
}
.contact-form .btn { justify-self: start; min-width: 160px; margin-top: 18px; }

/* Footer */
.footer-brand {
  display: grid;
  grid-template-columns: 58px auto;
  grid-template-rows: auto auto;
  align-items: center;
  column-gap: 16px;
}
.footer-logo {
  grid-row: 1 / 3;
  width: 58px;
  height: 58px;
  object-fit: cover;
  border: 1px solid rgba(255, 255, 255, .18);
  border-radius: 50%;
}
.site-footer {
  padding: 52px 0;
  background: #0b1115;
  border-color: rgba(255, 255, 255, .1);
  color: #fff;
}
.footer-brand span, .footer-nav a, .footer-copy { color: rgba(255, 255, 255, .42); }
.footer-copy { border-top-color: rgba(255, 255, 255, .1); }

/* Blog pages */
.subpage { background: var(--bg); }
.subpage .site-header.scrolled { background: rgba(241, 240, 235, .92); }
.subpage-main { padding-top: 82px; }
.subpage-head { padding: clamp(80px, 12vw, 150px) 0 64px; }
.subpage-head h1 {
  font-size: clamp(3.4rem, 9vw, 7.5rem);
  font-weight: 600;
  letter-spacing: -.07em;
}
.post-article { max-width: 860px; }
.post-article h1 { font-size: clamp(2.8rem, 7vw, 5.6rem); font-weight: 600; }
.post-hero { border: 0; border-radius: 0; }
.post-content { color: #4d595f; }
.post-content h2, .post-content h3, .post-content strong { color: var(--text); }

/* Sponsors page */
.sponsors-main { padding-top: 82px; }
.sponsors-hero {
  padding: clamp(90px, 13vw, 180px) 0 clamp(86px, 11vw, 140px);
  background:
    radial-gradient(circle at 85% 15%, rgba(157, 204, 255, .42), transparent 28%),
    var(--bg);
}
.sponsors-hero-grid {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: clamp(50px, 10vw, 150px);
  align-items: end;
}
.sponsors-hero h1 {
  font-size: clamp(3.8rem, 8.5vw, 8rem);
  font-weight: 600;
  line-height: .9;
  letter-spacing: -.075em;
}
.sponsors-hero h1 span { color: #8b959a; }
.sponsors-hero blockquote {
  padding: 0 0 4px 24px;
  border-left: 2px solid var(--red);
  color: var(--muted);
  font-size: clamp(1rem, 1.4vw, 1.15rem);
}
.sponsors-hero cite {
  display: block;
  margin-top: 22px;
  color: var(--text);
  font-family: var(--font-head);
  font-size: .7rem;
  font-style: normal;
  font-weight: 700;
  letter-spacing: .14em;
}
.sponsor-section {
  padding: clamp(76px, 10vw, 132px) 0;
  background: #fff;
  border-top: 1px solid var(--line);
}
.sponsor-section-main { background: #111a20; color: #fff; }
.sponsor-section-tint { background: #dce8ee; }
.sponsor-section-head {
  display: grid;
  grid-template-columns: 90px 1fr;
  margin-bottom: 48px;
}
.sponsor-section-head > span {
  padding-top: 8px;
  color: var(--muted);
  font: 600 .68rem/1 var(--font-head);
  letter-spacing: .14em;
}
.sponsor-section-head .eyebrow { margin-bottom: 12px; }
.sponsor-section-main .sponsor-section-head .eyebrow { color: var(--ice-2); }
.sponsor-section-head h2 {
  font-size: clamp(2rem, 4vw, 3.8rem);
  font-weight: 600;
}
.sponsor-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-left: 90px;
  border: 1px solid var(--line);
  background: var(--line);
}
.sponsor-grid-main { grid-template-columns: 1fr; }
.sponsor-section-main .sponsor-grid {
  border-color: rgba(255, 255, 255, .14);
  background: rgba(255, 255, 255, .14);
}
.sponsor-card {
  position: relative;
  display: grid;
  grid-template-rows: 1fr auto;
  min-height: 300px;
  padding: 28px;
  overflow: hidden;
  background: #fff;
  color: var(--text);
  transition: background .25s ease, color .25s ease, transform .25s ease;
}
.sponsor-card:hover {
  z-index: 1;
  background: var(--ice);
  color: #fff;
  transform: translateY(-5px);
}
.sponsor-section-main .sponsor-card { background: #172229; color: #fff; }
.sponsor-section-main .sponsor-card:hover { background: var(--ice); }
.sponsor-logo {
  display: grid;
  width: 112px;
  height: 112px;
  place-items: center;
  align-self: start;
  border: 1px solid rgba(18, 27, 32, .1);
  background: #fff;
}
.sponsor-logo img {
  width: 78px;
  height: 78px;
  object-fit: contain;
}
.sponsor-grid-main .sponsor-card { min-height: 370px; }
.sponsor-grid-main .sponsor-logo {
  width: 250px;
  height: 145px;
}
.sponsor-grid-main .sponsor-logo img {
  width: 220px;
  height: 115px;
}
.sponsor-logo img[src*="memorial"],
.sponsor-logo img[src*="lassa"] {
  width: 94px;
}
.sponsor-logo-dark { background: #080b0e; }
.sponsor-card-copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding-right: 32px;
}
.sponsor-card-copy strong {
  font: 600 clamp(1.15rem, 2vw, 1.55rem)/1.2 var(--font-head);
  letter-spacing: -.035em;
}
.sponsor-card-copy small {
  margin-top: 7px;
  overflow: hidden;
  color: var(--muted);
  font-size: .72rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.sponsor-card:hover .sponsor-card-copy small { color: rgba(255, 255, 255, .7); }
.sponsor-arrow {
  position: absolute;
  right: 26px;
  bottom: 27px;
  font-size: 1.35rem;
  transition: transform .25s ease;
}
.sponsor-card:hover .sponsor-arrow { transform: translate(3px, -3px); }
.sponsors-cta {
  padding: clamp(90px, 13vw, 170px) 0;
  background: var(--ice);
  color: #fff;
}
.sponsors-cta-inner { max-width: 900px; text-align: center; }
.sponsors-cta .eyebrow { color: rgba(255, 255, 255, .68); }
.sponsors-cta h2 { margin-bottom: 34px; }
.sponsors-cta .btn { background: #fff; color: var(--text); }
.sponsors-cta .btn:hover { background: var(--text); color: #fff; }

/* Motion */
.reveal { transform: translateY(18px); transition-duration: .8s; }

@media (max-width: 1100px) and (min-width: 721px) {
  .nav a { padding-inline: 7px; font-size: .74rem; }
  .nav a.nav-cta { margin-left: 4px; }
}

@media (max-width: 940px) {
  .nav a { padding-inline: 8px; }
  .atlantic-project-grid { grid-template-columns: 1fr; }
  .atlantic-project-copy { max-width: 720px; }
  .featured-stories-grid { grid-template-columns: 1fr; }
  .feature-video { min-height: 0; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid .stat:last-child { grid-column: 1 / -1; }
  .stat { min-height: 160px; border-bottom: 1px solid rgba(255, 255, 255, .2); }
  .story-grid { grid-template-columns: 1fr; }
  .story-portrait { max-width: 540px; margin: 0; }
  .cards { grid-template-columns: 1fr; }
  .card { min-height: 350px; }
  .expedition-video { grid-template-columns: 1fr; }
  .expedition-video-head p { max-width: 520px; }
  .antarctica-map-head { grid-template-columns: 1fr; }
  .antarctica-map-head span { grid-row: auto; margin-bottom: 14px; }
  .book-grid, .contact-grid { grid-template-columns: 1fr; }
  .speak-topics { grid-template-columns: 1fr; }
  .topic { min-height: 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .sponsors-hero-grid { grid-template-columns: 1fr; }
  .sponsors-hero blockquote { max-width: 700px; }
  .sponsor-grid { grid-template-columns: 1fr 1fr; }
  .sponsor-grid-main { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .site-header { padding-top: 0; }
  .header-inner { height: 72px; }
  .nav-toggle { display: flex; }
  .site-header.scrolled .nav-toggle span { background: var(--text); }
  .nav {
    width: 100%;
    background: rgba(17, 26, 32, .98);
    border: 0;
  }
  .nav a,
  .site-header.scrolled .nav a { color: #fff; font-size: 1.15rem; }
  .site-header.scrolled .nav a.nav-cta { color: #fff; border-color: rgba(255, 255, 255, .4); }
  .hero { min-height: 820px; align-items: flex-end; }
  .hero-img { object-position: 64% center; }
  .hero-overlay {
    background:
      linear-gradient(0deg, rgba(7, 13, 18, .98), rgba(7, 13, 18, .2) 75%),
      linear-gradient(90deg, rgba(7, 13, 18, .7), transparent);
  }
  .hero-content { padding-top: 150px; padding-bottom: 78px; }
  .hero-title { font-size: clamp(3.55rem, 17vw, 5.4rem); }
  .hero-index { display: none; }
  .hero-sub { max-width: 94%; }
  .hero-note { display: none; }
  .hero-motto { margin-top: 28px; }
  .featured-stories-head { display: block; }
  .feature-talk, .feature-book { grid-template-columns: 1fr; }
  .feature-talk-image { min-height: 360px; }
  .feature-book { gap: 44px; }
  .feature-book-cover { width: 210px; justify-self: center; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat { min-height: 140px; }
  .stats-grid .stat:last-child { grid-column: 1 / -1; }
  .tl::before { left: 76px; }
  .tl li { grid-template-columns: 76px 1fr; gap: 16px; }
  .tl-year { font-size: .7rem; }
  .tl-body { padding-left: 22px; font-size: .92rem; }
  .cards { margin-top: 46px; }
  .card { padding: 28px 24px; }
  .footer-inner, .footer-nav { align-items: flex-start; }
  .footer-nav { flex-wrap: wrap; gap: 12px 20px; }
  .sponsors-main { padding-top: 72px; }
  .sponsor-section-head { grid-template-columns: 52px 1fr; }
  .sponsor-grid, .sponsor-grid-main { grid-template-columns: 1fr; margin-left: 0; }
  .sponsor-card { min-height: 260px; }
}

@media (max-width: 420px) {
  .hero-actions { display: grid; }
  .hero-actions .btn { width: 100%; }
  .stat-num { font-size: 2rem; }
  .stat-label { font-size: .6rem; }
  .contact-form .btn { width: 100%; }
}