/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html, body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    background-color: #ffffff;
    color: #222;
}
img {
    max-width: 100%;
    display: block;
}

/* Colors */
:root {
    --umn-maroon: #1B3464;
    --umn-gold: #FFCC33;
    --umn-gray: #f5f5f5;
    --text-dark: #222;
    --text-light: #fff;
}

/* Container */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

/* Navbar */
.navbar {
    background-color: var(--umn-maroon);
    padding: 0.5rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 999;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
.logo img {
    height: clamp(60px, 5.5vw, 80px);
}
.nav-menu {
    display: flex;
    list-style: none;
    justify-content: flex-end;
    align-items: center;
    flex-wrap: nowrap;
    gap: clamp(0.45rem, 0.72vw, 0.9rem);
    margin-left: auto;
}
.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 96%;
    max-width: 1600px;
    gap: clamp(0.75rem, 1vw, 1.25rem);
}
.navbar .container > .logo {
    flex: 0 0 auto;
}
#top-nav {
    flex: 1 1 auto;
    min-width: 0;
    display: flex;
    justify-content: flex-end;
}
#top-nav nav {
    width: 100%;
}
.nav-menu li {
    flex: 0 1 auto;
}
.nav-menu li a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    white-space: nowrap;
    font-size: clamp(0.82rem, 0.62rem + 0.42vw, 1rem);
    line-height: 1.2;
    letter-spacing: -0.035em;
}
.nav-menu li a:hover {
    color: var(--umn-gold);
}
.nav-menu li.nav-feature a {
    position: relative;
    gap: 0.38rem;
    padding: 0.34rem 0.52rem;
    border: 1px solid rgba(255, 204, 51, 0.5);
    border-radius: 999px;
    background: linear-gradient(135deg, rgba(255, 204, 51, 0.24), rgba(255, 255, 255, 0.08));
    color: #fff8dc;
    font-weight: 700;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}
.nav-menu li.nav-feature a:hover {
    color: #fff;
    border-color: rgba(255, 204, 51, 0.88);
    background: linear-gradient(135deg, rgba(255, 204, 51, 0.34), rgba(255, 255, 255, 0.13));
}
.nav-menu li.nav-feature-industry a {
    border-color: rgba(255, 255, 255, 0.48);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.18), rgba(255, 204, 51, 0.12));
    color: #fff;
}
.nav-menu li.nav-feature-industry a:hover {
    border-color: rgba(255, 255, 255, 0.86);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.24), rgba(255, 204, 51, 0.2));
}
.nav-menu li.nav-feature-data a {
    border-color: rgba(180, 225, 222, 0.62);
    background: linear-gradient(135deg, rgba(180, 225, 222, 0.22), rgba(255, 255, 255, 0.09));
    color: #efffff;
}
.nav-menu li.nav-feature-data a:hover {
    border-color: rgba(204, 245, 241, 0.9);
    background: linear-gradient(135deg, rgba(180, 225, 222, 0.3), rgba(255, 255, 255, 0.14));
}
.nav-menu li.nav-feature-data .nav-new-badge {
    background: #dff7ef;
    color: var(--umn-maroon);
}
.nav-menu li.nav-feature-awards a {
    border-color: rgba(255, 204, 51, 0.9);
    background: linear-gradient(135deg, #ffdf74, var(--umn-gold));
    color: var(--umn-maroon);
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.18), 0 6px 16px rgba(255, 204, 51, 0.16);
}
.nav-menu li.nav-feature-awards a:hover {
    color: var(--umn-maroon);
    border-color: #ffe58a;
    background: linear-gradient(135deg, #ffeaa0, #ffd75a);
}
.nav-new-badge {
    display: inline-flex;
    position: absolute;
    top: -0.55rem;
    right: -0.22rem;
    z-index: 1;
    align-items: center;
    padding: 0.12rem 0.34rem;
    border-radius: 999px;
    background: var(--umn-gold);
    color: var(--umn-maroon);
    font-size: 0.62rem;
    font-weight: 800;
    line-height: 1;
    letter-spacing: 0.06em;
    pointer-events: none;
}
.nav-track-badge {
    display: inline-flex;
    position: absolute;
    top: -0.55rem;
    right: -0.22rem;
    z-index: 1;
    align-items: center;
    padding: 0.12rem 0.34rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.92);
    color: var(--umn-maroon);
    font-size: 0.58rem;
    font-weight: 800;
    line-height: 1;
    letter-spacing: 0.07em;
    pointer-events: none;
}
@media (max-width: 1500px) {
    .nav-track-badge,
    .nav-menu li.nav-feature:not(.nav-feature-data) .nav-new-badge,
    .nav-menu li.nav-feature-data .nav-new-badge {
        display: none;
    }
}
@media (max-width: 1420px) {
    .nav-menu {
        gap: 0.42rem;
    }
    .nav-menu li a {
        font-size: 0.78rem;
    }
    .nav-menu li.nav-feature a {
        padding: 0.28rem 0.38rem;
    }
}
@media (max-width: 1280px) {
    .navbar .container {
        align-items: flex-start;
    }
    .nav-menu {
        flex-wrap: wrap;
        row-gap: 0.42rem;
        gap: 0.58rem;
    }
    .nav-menu li a {
        font-size: 0.86rem;
    }
    .nav-menu li.nav-feature a {
        padding: 0.32rem 0.46rem;
    }
    .nav-new-badge,
    .nav-track-badge {
        display: none;
    }
}

/* Dropdown */
.dropdown {
    position: relative;
}
.dropdown-content {
    display: none;
    position: absolute;
    background-color: #fff;
    color: #000;
    top: 100%;
    left: 0;
    box-shadow: 0px 4px 6px rgba(0,0,0,0.1);
    border-radius: 4px;
    z-index: 999;
    min-width: 270px;
}
.dropdown-content li {
    padding: 0.5rem 1rem;
    white-space: nowrap;
}
.dropdown-content li a {
    color: #000;
    font-size: 0.95rem;
    letter-spacing: 0;
}
.dropdown:hover .dropdown-content {
    display: block;
}

/* Hero Section */
.hero {
    background-image: url('assets/img/Washington-DC-Scenery.jpg');
    background-size: cover;
    background-position: center;
    height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 64px;
    position: relative;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0); /* brighter overlay */
}

.hero-text {
    position: relative;
    color: var(--text-light);
    text-align: center;
    z-index: 1;
    background-color: rgba(0, 0, 0, 0.4);
    padding: 1rem 2rem;
    border-radius: 8px;
    display: inline-block;
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--umn-gold);
    text-shadow: 2px 2px 6px rgba(0, 0, 0, 0.6);
}

.hero-text p {
    font-size: 1.1rem;
    font-weight: 500;
    color: #fff;
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.5);
}


/* Main Sections */
.welcome-news {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    padding: 2rem 0;
    gap: 2rem;
}
.welcome, .news {
    flex: 1;
    min-width: 280px;
}
h2 {
    color: var(--umn-maroon);
    margin-bottom: 1rem;
}
ul {
    list-style: disc;
    padding-left: 1.5rem;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.conference-status-alert {
    margin: 1.4rem 0;
    padding: 1rem 1.2rem;
    background: #fff6db;
    border: 1px solid rgba(27, 52, 100, 0.22);
    border-left: 5px solid var(--umn-maroon);
    border-radius: 12px;
    color: var(--umn-maroon);
    font-size: 1.1rem;
    line-height: 1.45;
    box-shadow: 0 8px 18px rgba(0, 0, 0, 0.05);
}

.registration-link-status {
    display: inline-block;
    margin-left: 0.45rem;
    padding: 0.15rem 0.55rem;
    color: #fff;
    background: var(--umn-maroon);
    border-radius: 999px;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    vertical-align: middle;
}

del {
  text-decoration: line-through;
  text-decoration-color: red;
}

.button {
    background-color: var(--umn-gold);
    color: var(--text-dark);
    padding: 0.6rem 1.2rem;
    margin-right: 1rem;
    border: none;
    text-decoration: none;
    font-weight: 600;
    border-radius: 4px;
    box-shadow: 1px 1px 5px rgba(0,0,0,0.2);
    transition: background 0.3s ease;
}
.button:hover {
    background-color: #e0b200;
    color: #000;
}
.button.secondary {
    background-color: #ffffff;
    color: var(--umn-maroon);
    border: 2px solid var(--umn-maroon);
}
.button.secondary:hover {
    background-color: var(--umn-maroon);
    color: #fff;
}

.committee-section {
    margin-top: 3rem;
    padding: 2rem 0;
    border-top: 1px solid #ddd;
}
.committee-section h2, .committee-section h3 {
    color: var(--umn-maroon);
    margin-bottom: 1rem;
}
.committee-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    margin-bottom: 2rem;
}
.committee-card {
    width: 220px;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 1rem;
    text-align: center;
}

.committee-card img {
    width: 180px;
    height: 240px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 0.75rem;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.committee-card-name {
    font-weight: bold;
    margin-bottom: 0.25rem;
}

.committee-card-affiliation {
    font-size: 0.95rem;
    color: #444;
    line-height: 1.3;
}

.sponsor-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    justify-content: center;
    align-items: center;
}
.sponsor-logo img {
    height: 100px;
    max-width: 180px;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

/* =========================================
   Sponsors
   ========================================= */

/* 整个赞助商区域标题居中（你已经有 text-align:center，这里再强化一次） */
.sponsor-section,
.sponsor-tier,
.sponsor-tier h3 {
  text-align: center;
}

/* 每个 tier 块之间更舒服一点 */
.sponsor-tier h3 {
  margin: 1.75rem 0 0.75rem;
}

/* 让 sponsor 标题像独立标签一样浮在 logo 上方，避免和 logo 视觉混在一起 */
.sponsors-highlight .sponsor-tier h3 {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
  gap: 0.7rem;
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
  padding: 0.46rem 1.15rem;
  border: 1px solid rgba(27, 52, 100, 0.24);
  border-radius: 10px;
  background: linear-gradient(180deg, #fcf6f7 0%, #f0dfe4 100%);
  box-shadow: 0 6px 16px rgba(27, 52, 100, 0.08);
  color: var(--umn-maroon);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.sponsors-highlight .sponsor-tier h3::before,
.sponsors-highlight .sponsor-tier h3::after {
  content: "";
  width: 1.4rem;
  height: 1px;
  background: rgba(27, 52, 100, 0.32);
}

/* 让 logo 行始终居中 */
.sponsor-grid {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 2rem;
  margin-bottom: 1.75rem;
}

/* 关键：去掉你截图里的“框”（border/背景/阴影/内边距） */
.sponsor-logo {
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  border-radius: 0 !important;
  padding: 0 !important;
  margin: 0 !important;
}

/* 让图片更大、且完整显示（不裁切、不变形） */
.sponsor-logo img {
  height: auto !important;
  width: auto !important;
  max-width: min(920px, 100%) !important; /* 宽屏也不会溢出 */
  object-fit: contain !important;
  filter: none !important;               /* 如果你不想要阴影就关掉 */
}

/* Platinum：CHS 横向 logo 适合更宽的展示 */
.sponsor-grid-platinum .sponsor-logo img {
  max-height: 165px !important;
  max-width: min(1100px, 100%) !important;
}

/* Gold：Mayo 这种方形/竖向 logo 更适合用高度撑起来 */
.sponsor-grid-gold .sponsor-logo img {
  max-height: 180px !important;
  max-width: min(360px, 100%) !important;
}

/* Silver：横幅 logo 靠宽度撑起来更自然 */
.sponsor-grid-silver .sponsor-logo img {
  max-height: 150px !important;
  max-width: min(980px, 100%) !important;
}

/* 手机端：再稍微收一点高度，避免太占屏 */
@media (max-width: 520px) {
  .sponsor-grid-platinum .sponsor-logo img {
    max-height: 110px !important;
  }
  .sponsor-grid-gold .sponsor-logo img {
    max-height: 150px !important;
  }
  .sponsor-grid-silver .sponsor-logo img {
    max-height: 115px !important;
  }
}

/* Sponsors page showcase (moved from index): larger text and larger Gold logo */
.sponsors-highlight {
  margin-bottom: 2.25rem;
}

.sponsors-highlight h2 {
  font-size: clamp(2rem, 4vw, 2.5rem);
}

.sponsors-highlight .sponsor-tier h3 {
  font-size: clamp(1.35rem, 2.2vw, 1.7rem);
}

.sponsors-highlight .sponsor-grid-platinum .sponsor-logo img {
  max-height: 155px !important;
  max-width: min(1020px, 100%) !important;
}

.sponsors-highlight .sponsor-grid-gold .sponsor-logo img {
  max-height: 220px !important;
  max-width: min(430px, 100%) !important;
}

@media (max-width: 520px) {
  .sponsors-highlight .sponsor-grid-platinum .sponsor-logo img {
    max-height: 100px !important;
  }
  .sponsors-highlight .sponsor-grid-gold .sponsor-logo img {
    max-height: 180px !important;
  }
}

/* =========================================
   Sponsors Page Redesign
   ========================================= */

.sponsor-page {
  padding: 2.25rem 0 4rem;
}

.sponsor-page-heading {
  margin-bottom: 1.5rem;
  text-align: center;
}

.sponsor-page-heading-left {
  text-align: left;
}

.sponsor-page-heading h2 {
  margin-bottom: 0.65rem;
  color: var(--umn-maroon);
  font-size: clamp(1.95rem, 3.8vw, 2.45rem);
}

.sponsor-page-heading p {
  max-width: 780px;
  margin: 0 auto;
  color: #4d4a47;
  line-height: 1.7;
}

.sponsor-page-heading-left p {
  margin: 0;
  max-width: 880px;
}

.sponsor-showcase {
  padding: 2rem 0 1rem;
}

.sponsor-tier-block {
  padding: 1.4rem 0 1.65rem;
  border-top: 1px solid rgba(27, 52, 100, 0.12);
}

.sponsor-tier-block:first-of-type {
  border-top: none;
  padding-top: 0.35rem;
}

.sponsor-tier-label {
  margin: 0 0 1rem;
  text-align: center;
  color: var(--umn-maroon);
  font-size: clamp(1rem, 1.15vw, 1.08rem);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.sponsor-logo-row {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 92px;
  padding: 0.2rem 0;
}

.sponsor-logo-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: inherit;
  transition: transform 0.18s ease, opacity 0.18s ease;
}

.sponsor-logo-link:hover,
.sponsor-logo-link:focus-visible {
  transform: translateY(-1px);
  opacity: 0.9;
  outline: none;
}

.sponsor-logo-link-stack {
  flex-direction: column;
}

.sponsor-logo-row img {
  display: block;
  height: auto;
  width: auto;
  max-width: 100%;
  object-fit: contain;
}

.sponsor-logo-stack {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.65rem;
}

.sponsor-logo-row-platinum {
  gap: 1.5rem;
  flex-wrap: wrap;
}

.sponsor-logo-row-platinum img {
  max-width: min(520px, 100%);
  max-height: 88px;
}

.sponsor-logo-row-platinum .sponsor-logo-platinum-wide {
  max-width: min(410px, 100%);
  max-height: 72px;
}

.sponsor-logo-row-platinum .sponsor-logo-platinum-standard {
  max-width: min(350px, 100%);
  max-height: 160px;
}

.sponsor-logo-row-gold img {
  max-width: min(210px, 100%);
  max-height: 118px;
}

.sponsor-logo-row-gold {
  gap: 2rem;
  flex-wrap: wrap;
}

.sponsor-logo-row-gold .sponsor-logo-gold-wide {
  max-width: min(360px, 100%);
  max-height: 72px;
}

.sponsor-logo-row-gold .sponsor-logo-gold-tcii {
  max-width: min(280px, 100%);
  max-height: 86px;
}

.sponsor-logo-row-silver img {
  max-width: min(350px, 100%);
  max-height: 78px;
}

.sponsor-logo-row-silver {
  gap: 1.8rem;
  flex-wrap: wrap;
}

.sponsor-logo-row-silver .sponsor-logo-row-break {
  flex-basis: 100%;
  height: 0;
}

.sponsor-logo-row-silver .sponsor-logo-silver-wide {
  max-width: min(320px, 100%);
  max-height: 68px;
}

.sponsor-logo-row-silver .sponsor-logo-silver-standard {
  max-width: min(165px, 100%);
  max-height: 70px;
}

.sponsor-logo-row-silver .sponsor-logo-silver-clhss {
  width: 165px;
  max-height: 116px;
}

.sponsor-logo-row-silver .sponsor-logo-silver-boston {
  width: 190px;
  max-width: min(190px, 100%);
  max-height: 84px;
}

.sponsor-logo-row-silver .sponsor-logo-silver-jhir {
  width: 420px;
  max-width: min(420px, 100%);
  max-height: 88px;
}

.sponsor-logo-row-award img {
  max-width: min(110px, 100%);
  max-height: 96px;
}

.sponsor-logo-row-bronze {
  min-height: 72px;
  gap: 1.45rem;
  flex-wrap: wrap;
}

.sponsor-logo-row-bronze img {
  max-width: min(270px, 100%);
  max-height: 40px;
}

.sponsor-logo-row-bronze .sponsor-logo-bronze-journal {
  max-width: min(270px, 100%);
  max-height: 34px;
}

.sponsor-logo-row-bronze .sponsor-logo-bronze-wide {
  max-width: min(250px, 100%);
  max-height: 44px;
}

.sponsor-logo-caption {
  margin: 0;
  color: #4d4a47;
  font-size: 0.96rem;
  font-weight: 500;
}

.sponsor-opportunities {
  margin-top: 1.25rem;
  padding: 2rem 0 0.5rem;
  border-top: 1px solid rgba(27, 52, 100, 0.12);
}

.sponsor-deadline {
  margin: 0 0 1.75rem;
  color: var(--umn-maroon);
  font-weight: 600;
}

.sponsor-opportunities h3 {
  margin: 1.8rem 0 1rem;
  color: var(--umn-maroon);
  font-size: 1.15rem;
}

.sponsor-package-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.sponsor-package-card {
  padding: 1.15rem 1.2rem 1.2rem;
  background: #fcfaf8;
  border: 1px solid rgba(27, 52, 100, 0.1);
  border-radius: 14px;
  box-shadow: 0 8px 20px rgba(53, 39, 28, 0.05);
}

.sponsor-package-card-secondary {
  background: #fff;
}

.sponsor-package-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.sponsor-package-header h4 {
  margin: 0;
  color: #2f2a26;
  font-size: 1.08rem;
}

.sponsor-package-price {
  margin: 0;
  color: var(--umn-maroon);
  font-weight: 700;
  white-space: nowrap;
}

.sponsor-package-list {
  margin: 0;
  padding-left: 1.1rem;
  color: #4b4946;
  line-height: 1.6;
}

.sponsor-package-list li + li {
  margin-top: 0.45rem;
}

.sponsor-contact {
  margin-top: 1.6rem;
  padding-top: 1.75rem;
  border-top: 1px solid rgba(27, 52, 100, 0.12);
}

.sponsor-contact .committee-section h2,
.sponsor-contact .committee-section h3 {
  margin-bottom: 0.35rem;
}

.sponsor-contact .committee-grid {
  margin-top: 1rem;
  gap: 1.25rem;
}

.sponsor-contact .committee-card {
  padding: 1.35rem 1.2rem;
  border: 1px solid rgba(27, 52, 100, 0.1);
  box-shadow: 0 10px 24px rgba(53, 39, 28, 0.05);
}

.sponsor-contact .committee-card img {
  width: 160px;
  height: 160px;
  margin-bottom: 0.9rem;
}

@media (max-width: 760px) {
  .sponsor-page {
    padding-top: 1.75rem;
  }

  .sponsor-logo-row {
    min-height: 72px;
  }

  .sponsor-logo-row-platinum img {
    max-height: 68px;
  }

  .sponsor-logo-row-platinum .sponsor-logo-platinum-wide {
    max-width: min(310px, 100%);
    max-height: 56px;
  }

  .sponsor-logo-row-platinum .sponsor-logo-platinum-standard {
    max-width: min(250px, 100%);
    max-height: 116px;
  }

  .sponsor-logo-row-gold img {
    max-height: 94px;
    max-width: 175px;
  }

  .sponsor-logo-row-gold .sponsor-logo-gold-wide {
    max-height: 54px;
    max-width: min(260px, 100%);
  }

  .sponsor-logo-row-gold .sponsor-logo-gold-tcii {
    max-height: 70px;
    max-width: min(220px, 100%);
  }

  .sponsor-logo-row-silver img {
    max-height: 62px;
    max-width: 280px;
  }

  .sponsor-logo-row-silver .sponsor-logo-silver-wide {
    max-height: 56px;
    max-width: 240px;
  }

  .sponsor-logo-row-silver .sponsor-logo-silver-standard {
    max-height: 58px;
    max-width: 138px;
  }

  .sponsor-logo-row-silver .sponsor-logo-silver-clhss {
    width: 138px;
    max-height: 96px;
  }

  .sponsor-logo-row-silver .sponsor-logo-silver-boston {
    width: 150px;
    max-width: min(150px, 100%);
    max-height: 66px;
  }

  .sponsor-logo-row-silver .sponsor-logo-silver-jhir {
    width: 300px;
    max-width: min(300px, 100%);
    max-height: 60px;
  }

  .sponsor-logo-row-silver .sponsor-logo-silver-compact {
    max-height: 74px;
    max-width: 120px;
  }

  .sponsor-logo-row-award img {
    max-height: 82px;
    max-width: 96px;
  }

  .sponsor-logo-row-bronze img {
    max-width: min(220px, 100%);
    max-height: 34px;
  }

  .sponsor-logo-row-bronze .sponsor-logo-bronze-journal {
    max-width: min(220px, 100%);
    max-height: 28px;
  }

  .sponsor-logo-row-bronze .sponsor-logo-bronze-wide {
    max-width: min(190px, 100%);
    max-height: 38px;
  }

  .sponsor-package-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }
}

/* Footer */
/* Footer container layout */
.footer {
    background-color: var(--umn-maroon);
    color: white;
    padding: 2rem 0;
    font-size: 0.9rem;
}

.footer a {
    color: white;
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

.footer-columns {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 2rem;
}

.footer-section {
    flex: 1 1 250px;
    min-width: 200px;
}

.footer-section h3 {
    font-weight: bold;
    margin-bottom: 1rem;
}

.footer-past-years {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.footer-past-years ul {
    list-style: none;
    padding-left: 0;
    margin: 0;
}

.footer-past-years li {
    margin-bottom: 0.5rem;
}

.social-icons {
  display: flex;
  gap: 1rem;
  align-items: center;
  margin-top: 0.5rem;
}

.social-icon {
  width: 28px;
  height: 28px;
  transition: transform 0.2s ease;
}

.social-icon:hover {
  transform: scale(1.2);
}

@media (max-width: 768px) {
    .footer-columns {
        flex-direction: column;
    }
    .footer-past-years {
        flex-direction: column;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .navbar .container {
        width: 92%;
    }
    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.85rem 1rem;
    }
    .nav-menu li a {
        font-size: 0.82rem;
    }
    .hero {
        height: 400px;
    }
    .hero-text h1 {
        font-size: 2.2rem;
    }
}

/* =========================================
   Bottom Identity Footer (Logos & Copyright)
   ========================================= */
.footer-identity {
    /* 使用淡灰色背景，或者你可以改成 var(--umn-gold) */
    background-color: var(--umn-gold);
    padding: 2rem 0;
    text-align: center; /* 让所有文字内容居中 */
    border-top: 1px solid #e0e0e0;
}

/* Logo 容器：弹性布局，水平居中 */
.identity-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 30px; /* 两个 Logo 之间的间距 */
    margin-bottom: 1rem; /* Logo 与下方文字的间距 */
}

/* 限制 Logo 高度，保持整齐 */
.identity-logos img {
    height: 38px;
    width: auto;
}

/* 版权文字样式 */
.identity-copyright {
    font-size: 0.9rem;
    color: #444;
    margin-bottom: 0.5rem; /* 版权与隐私政策之间的间距 */
}

/* 隐私政策链接样式 */
.identity-privacy a {
    font-size: 0.9rem;
    color: #00629B; /* 使用 IEEE 蓝或深色 */
    text-decoration: none;
}

.identity-privacy a:hover {
    text-decoration: underline;
}

/* 响应式调整：手机端如果屏幕太小，Logo 可以稍微缩小 */
@media (max-width: 480px) {
    .identity-logos {
        gap: 20px;
    }
    .identity-logos img {
        height: 32px;
    }
}

/* Registration fee table */
.registration-clarification {
    margin: 0.9rem 0 1rem;
    padding: 0.95rem 1.1rem;
    background: #f8f1e8;
    border-left: 4px solid var(--umn-maroon);
    border-radius: 10px;
    color: #4a433d;
    font-size: 1rem;
    line-height: 1.55;
}

.registration-clarification strong {
    color: var(--umn-maroon);
}

.registration-table-wrap {
    width: 100%;
    max-width: 100%;
    margin: 1.25rem 0 0.75rem;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    background: #fff;
    border: 1px solid #e3ddd7;
    border-radius: 16px;
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.06);
}

.registration-table {
    width: 100%;
    min-width: 980px;
    border-collapse: separate;
    border-spacing: 0;
    table-layout: fixed;
    color: #333;
}

.registration-table thead th {
    padding: 1.2rem 1rem;
    text-align: center;
    vertical-align: bottom;
    background: linear-gradient(180deg, #f5f1ed 0%, #ece5de 100%);
    border-bottom: 1px solid #ddd2c9;
    font-size: 1rem;
    font-weight: 700;
    line-height: 1.25;
    color: #2d2a28;
}

.registration-table thead th:first-child {
    width: 40%;
    text-align: left;
}

.registration-heading {
    display: block;
    font-size: 1.1rem;
    font-weight: 700;
    color: #2f2b29;
}

.registration-subheading {
    display: block;
    margin-top: 0.3rem;
    font-size: 0.95rem;
    font-weight: 500;
    line-height: 1.35;
    color: #5e554e;
}

.registration-table tbody th,
.registration-table tbody td {
    padding: 1.15rem 1rem;
    border-bottom: 1px solid #ece4dd;
    font-size: 1.05rem;
    background: #fff;
}

.registration-table tbody tr:nth-child(even) th,
.registration-table tbody tr:nth-child(even) td {
    background: #fcfaf8;
}

.registration-table tbody tr:last-child th,
.registration-table tbody tr:last-child td {
    border-bottom: none;
}

.registration-table tbody th {
    text-align: left;
    font-weight: 700;
    color: #2f2b29;
}

.registration-table tbody td {
    text-align: center;
    font-weight: 500;
    color: #3d3a38;
}

@media (max-width: 900px) {
    .registration-table {
        min-width: 900px;
    }

    .registration-table thead th,
    .registration-table tbody th,
    .registration-table tbody td {
        padding: 1rem 0.85rem;
    }
}

/* =========================================
   Attraction Image Rows / Grids (Venue page)
   ========================================= */

.attractions-gallery {
  margin: 0.75rem 0 1.25rem 0;
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(2, minmax(0, 1fr)); /* 2 columns by default */
}

.attraction-card {
  margin: 0;
  background: #fff;
  border: 1px solid #e7e7e7;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 3px 10px rgba(0,0,0,0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.attraction-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0,0,0,0.10);
}

.attraction-card img {
  width: 100%;
  height: 170px;
  object-fit: cover;
}

.attraction-card figcaption {
  padding: 0.65rem 0.75rem 0.7rem 0.75rem;
  font-weight: 700;
  color: var(--umn-maroon);
  font-size: 0.98rem;
  line-height: 1.2;
}

/* Wider screens: show 3 in a row for the museum section (auto) */
@media (min-width: 900px) {
  .attractions-gallery {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .attraction-card img {
    height: 180px;
  }
}

/* Phones: 1 per row */
@media (max-width: 520px) {
  .attractions-gallery {
    grid-template-columns: 1fr;
  }
  .attraction-card img {
    height: 190px;
  }
}

/* =========================================
   Unified content photos (Venue / Hotels)
   ========================================= */

.content-photo {
  width: 100%;
  max-width: 920px;          /* 控制最大宽度，避免超大撑满屏幕 */
  height: 320px;             /* 统一高度（你也可以改成 280/360） */
  object-fit: cover;         /* 统一裁切方式：保证不变形、画面铺满 */
  display: block;
  margin: 0.75rem auto 1rem; /* 居中 + 上下留白 */
  border-radius: 12px;
  border: 1px solid #e7e7e7;
  box-shadow: 0 4px 14px rgba(0,0,0,0.08);
}

/* 手机端：稍微更高一点，观感更饱满 */
@media (max-width: 520px) {
  .content-photo {
    height: 220px;
    max-width: 100%;
  }
}

/* =========================================
   Parking information (Venue page)
   ========================================= */

.parking-info-section {
  margin: 0 0 2rem;
}

.parking-info-section h2 {
  color: var(--umn-maroon);
  margin-bottom: 0.75rem;
}

.parking-info-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: 1.25rem;
  align-items: stretch;
  margin: 1rem 0;
}

.parking-map-card {
  margin: 0;
  background: #fff;
  border: 1px solid #e3ddd7;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.07);
}

.parking-map-visual {
  position: relative;
  aspect-ratio: 936 / 676;
  background: #f8f5ef;
  overflow: hidden;
}

.parking-map-visual img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.parking-hotspot {
  position: absolute;
  z-index: 2;
  display: block;
  border: 3px solid rgba(27, 52, 100, 0);
  border-radius: 16px;
  background: rgba(255, 204, 51, 0);
  box-shadow: 0 0 0 rgba(27, 52, 100, 0);
  opacity: 0;
  transform: scale(0.96);
  transition: opacity 0.18s ease, transform 0.18s ease, background 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
  pointer-events: none;
}

.parking-hotspot::after {
  content: "";
  position: absolute;
  inset: -9px;
  border: 2px solid rgba(27, 52, 100, 0.25);
  border-radius: 22px;
  opacity: 0;
}

.parking-hotspot.is-active {
  opacity: 1;
  transform: scale(1);
  border-color: var(--umn-maroon);
  background: rgba(255, 204, 51, 0.32);
  box-shadow: 0 0 0 5px rgba(27, 52, 100, 0.13), 0 12px 24px rgba(0, 0, 0, 0.18);
}

.parking-hotspot.is-active::after {
  opacity: 1;
}

.parking-hotspot-washington {
  left: 64.5%;
  top: 9%;
  width: 21.5%;
  height: 14%;
}

.parking-hotspot-east-river {
  left: 22.5%;
  top: 54%;
  width: 13%;
  height: 21%;
}

.parking-hotspot-weisman {
  left: 3%;
  top: 30.5%;
  width: 14.5%;
  height: 18%;
}

.parking-map-card figcaption {
  padding: 0.7rem 0.9rem;
  color: #5a514c;
  background: #faf7f2;
  font-size: 0.95rem;
  font-weight: 600;
}

.parking-card-grid {
  display: grid;
  gap: 0.85rem;
}

.parking-card {
  background: #fff;
  border: 1px solid #e3ddd7;
  border-left: 5px solid var(--umn-maroon);
  border-radius: 14px;
  padding: 1rem 1.05rem;
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.055);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.parking-card:hover,
.parking-card:focus-within,
.parking-card.is-active {
  background: #fffaf0;
  border-color: rgba(27, 52, 100, 0.32);
  box-shadow: 0 14px 28px rgba(27, 52, 100, 0.13);
  transform: translateY(-2px);
}

.parking-card h3 {
  margin: 0 0 0.45rem;
  color: var(--umn-maroon);
  font-size: 1.05rem;
  line-height: 1.25;
}

.parking-card p {
  margin: 0 0 0.8rem;
  color: #4e4844;
  line-height: 1.4;
}

.parking-card a {
  display: inline-flex;
  align-items: center;
  color: var(--umn-maroon);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.parking-note {
  margin-top: 0.75rem;
  padding: 0.85rem 1rem;
  background: #f8f1e8;
  border-radius: 10px;
  color: #4a433d;
  line-height: 1.5;
}

@media (max-width: 820px) {
  .parking-info-layout {
    grid-template-columns: 1fr;
  }
}