/* ================================================
   東亞碑誌與區域網絡國際學術工作坊 2026
   主要樣式表
   ================================================ */

@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+TC:wght@400;500;600;700&family=Noto+Sans+TC:wght@400;500;600;700&display=swap');

/* ── CSS 變數 ── */
:root {
  --bg: #F5F1E8;
  --fg: #3C3C3C;
  --accent: #C9A961;
  --accent-dark: #B39450;
  --accent-light: #F5E6D3;
  --secondary: #E8E4DB;
  --border: #D4D0C8;
  --white: #FFFFFF;
  --gray: #888888;
  --card-bg: #FAF7F0;

  --shadow-sm: 0 1px 2px rgba(0,0,0,.05);
  --shadow-md: 0 4px 8px rgba(0,0,0,.1);
  --shadow-lg: 0 8px 16px rgba(0,0,0,.15);

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --font-serif: 'Noto Serif TC', Georgia, serif;
  --font-sans: 'Noto Sans TC', -apple-system, BlinkMacSystemFont, sans-serif;

  --container: 1280px;
  --transition: 300ms ease-in-out;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ── 容器 ── */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ── 導覽列 ── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--white);
  border-bottom: 2px solid var(--border);
  height: 64px;
}
.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.nav-logo {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 10px;
  line-height: 1.2;
}
.nav-logo-img {
  height: 56px;
  width: auto;
  mix-blend-mode: multiply;
  flex-shrink: 0;
}
.nav-logo-main {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
  transition: color var(--transition);
  white-space: nowrap;
}
.nav-logo:hover .nav-logo-main { color: var(--accent-dark); }

.nav-links {
  display: flex;
  gap: 28px;
  align-items: center;
}
.nav-links a {
  font-family: var(--font-sans);
  font-size: 18px;
  font-weight: 500;
  color: var(--fg);
  position: relative;
  padding-bottom: 2px;
  transition: color var(--transition);
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}
.nav-links a:hover,
.nav-links a.active { color: var(--accent); }
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

/* 漢堡選單 */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  flex-direction: column;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--fg);
  transition: var(--transition);
}
.nav-mobile {
  display: none;
  background: var(--white);
  border-top: 1px solid var(--border);
  padding: 16px 24px;
}
.nav-mobile.open { display: block; }
.nav-mobile a {
  display: block;
  padding: 12px 0;
  font-size: 16px;
  border-bottom: 1px solid var(--border);
  transition: color var(--transition), padding-left var(--transition);
}
.nav-mobile a:hover { color: var(--accent); padding-left: 8px; }
.nav-mobile a:last-child { border-bottom: none; }

/* ── 按鈕 ── */
.btn {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 700;
  border-radius: var(--radius-md);
  padding: 12px 24px;
  cursor: pointer;
  transition: background var(--transition), box-shadow var(--transition), color var(--transition), border-color var(--transition);
  border: 2px solid transparent;
  line-height: 1.4;
}
.btn-primary {
  background: var(--accent);
  color: var(--white);
  border-color: var(--accent);
}
.btn-primary:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  box-shadow: var(--shadow-md);
}
.btn-secondary {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
  padding: 10px 22px;
}
.btn-secondary:hover {
  background: var(--accent-light);
  border-color: var(--accent-dark);
}
.btn-secondary-light {
  background: transparent;
  color: var(--white);
  border: 2px solid var(--white);
  padding: 10px 22px;
}
.btn-secondary-light:hover {
  background: rgba(255,255,255,.15);
}

/* ── 頁面標題區塊 ── */
.page-header {
  position: relative;
  background: url('img_hero-background.jpg') center/cover no-repeat;
  padding: 120px 0;
  text-align: center;
}
.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.45);
}
.page-header .container {
  position: relative;
  animation: fadeInUp 600ms ease-out both;
}
.page-header h1 {
  font-family: var(--font-serif);
  font-size: 48px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--white);
}
.page-header p {
  margin-top: 16px;
  font-size: 18px;
  color: rgba(255,255,255,.8);
  letter-spacing: 0.5px;
}

/* ── 區段標題 ── */
.section-title {
  font-family: var(--font-serif);
  font-size: 36px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--fg);
  text-align: center;
  margin-bottom: 16px;
}
.section-title-line {
  width: 60px;
  height: 3px;
  background: var(--accent);
  margin: 0 auto 48px;
}
.section { padding: 80px 0; }
.section-alt { background: var(--secondary); }

/* ── 卡片 ── */
.card {
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
}
.card-accent {
  background: var(--card-bg);
  border-color: var(--accent);
}

/* ── 頁腳 ── */
footer {
  background: var(--white);
  color: var(--fg);
  padding: 64px 0 32px;
  border-top: 1px solid var(--border);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-bottom: 48px;
}
.footer-info {
  display: flex;
  align-items: center;
  gap: 48px;
  flex-wrap: wrap;
}
.footer-logo img {
  height: 100px;
  width: auto;
}
.footer-contact {
  font-size: 14px;
  color: var(--gray);
  line-height: 2;
  font-style: normal;
}
.footer-brand .logo {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 12px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255,255,255,.6);
}
.footer-col h4 {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255,255,255,.15);
}
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a {
  font-size: 14px;
  color: rgba(255,255,255,.6);
  transition: color var(--transition);
}
.footer-col ul li a:hover { color: var(--accent); }
.footer-col address {
  font-style: normal;
  font-size: 14px;
  color: rgba(255,255,255,.6);
  line-height: 1.9;
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  text-align: center;
  font-size: 13px;
  color: var(--gray);
}
.footer-bottom .footer-info {
  justify-content: center;
  margin-bottom: 20px;
  text-align: left;
}

/* ── 古典分隔線 ── */
.classical-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 18px 0;
  background: var(--bg);
}
.classical-divider::before,
.classical-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(to var(--dir, right), transparent, var(--accent));
}
.classical-divider::after {
  --dir: left;
}
.classical-divider-inner {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-size: 18px;
  letter-spacing: 6px;
}

/* ══════════════════════════════════════
   首頁
   ══════════════════════════════════════ */

/* 英雄 */
.hero {
  position: relative;
  height: 480px;
  background: url('img_hero-background.jpg') center/cover no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(40, 30, 10, .45);
}
.hero-content {
  position: relative;
  z-index: 1;
  color: var(--white);
  text-shadow: 0 2px 8px rgba(0,0,0,.3);
  padding: 0 16px;
}
.hero-content h1 {
  font-family: var(--font-serif);
  font-size: 56px;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 12px;
}
.hero-content .subtitle {
  font-size: 22px;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: 8px;
  text-shadow: 0 2px 6px rgba(0,0,0,.4);
}
.hero-content .date-info {
  font-size: 16px;
  color: rgba(255,255,255,.85);
  margin-bottom: 32px;
  letter-spacing: 0.5px;
}
.hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* 海報 */
.poster-section { background: var(--bg); }
.poster-wrap {
  text-align: center;
}
.poster-img {
  max-width: 100%;
  height: auto;
  display: inline-block;
  box-shadow: var(--shadow-md);
}

/* 簡介 */
.intro-box {
  max-width: 900px;
  margin: 0 auto;
  background: var(--white);
  border-top: 4px solid var(--accent);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  padding: 48px 64px;
  box-shadow: var(--shadow-md);
}
.intro-box h2 {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 24px;
  text-align: center;
}
.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-top: 32px;
}
.intro-grid h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.intro-grid ul { padding-left: 0; }
.intro-grid ul li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 8px;
  font-size: 15px;
  color: var(--fg);
}
.intro-grid ul li::before {
  content: '◆';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 8px;
  top: 6px;
}

/* 統計數字 */
.stats-section { background: var(--white); padding: 64px 0; }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  text-align: center;
}
.stat-item {
  padding: 32px 24px;
  border-right: 1px solid var(--border);
}
.stat-item:last-child { border-right: none; }
.stat-number {
  font-family: var(--font-serif);
  font-size: 48px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 8px;
}
.stat-label {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 4px;
}
.stat-desc { font-size: 14px; color: var(--gray); }

/* CTA 區塊 */
.cta-section {
  background: var(--fg);
  padding: 80px 0;
  text-align: center;
}
.cta-section h2 {
  font-family: var(--font-serif);
  font-size: 36px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 16px;
}
.cta-section p {
  font-size: 18px;
  color: rgba(255,255,255,.7);
  margin-bottom: 32px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ══════════════════════════════════════
   緣起與宗旨
   ══════════════════════════════════════ */
.about-intro {
  font-size: 17px;
  line-height: 2;
  color: var(--fg);
  max-width: 800px;
  margin: 0 auto;
  text-align: justify;
}
.purpose-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 48px;
}
.purpose-card {
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.purpose-card:hover { border-color: var(--accent); box-shadow: var(--shadow-md); }
.purpose-card .icon {
  font-size: 32px;
  margin-bottom: 12px;
}
.purpose-card h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--fg);
}

.research-list { max-width: 800px; margin: 48px auto 0; }
.research-item {
  padding: 20px 0 20px 24px;
  border-left: 4px solid var(--accent);
  margin-bottom: 24px;
}
.research-item h4 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
}
.research-item p { font-size: 15px; color: var(--gray); }

.outcomes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.outcome-card {
  background: var(--card-bg);
  border: 2px solid var(--accent);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
}
.outcome-card .num {
  font-family: var(--font-serif);
  font-size: 36px;
  font-weight: 700;
  color: var(--accent);
}
.outcome-card p { font-size: 15px; margin-top: 8px; }

/* ══════════════════════════════════════
   學者簡介 Modal
   ══════════════════════════════════════ */
.bio-card:hover { box-shadow: var(--shadow-md); background: var(--card-bg); }
.bio-card:hover .name { text-decoration: underline; text-underline-offset: 3px; }

.bio-modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.bio-modal.open { display: flex; }
.bio-modal-box {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 40px;
  max-width: 780px;
  width: 100%;
  position: relative;
  box-shadow: var(--shadow-lg);
  max-height: 85vh;
  overflow-y: auto;
}
.bio-modal-close {
  position: absolute;
  top: 16px; right: 20px;
  background: none;
  border: none;
  font-size: 28px;
  color: var(--gray);
  cursor: pointer;
  line-height: 1;
}
.bio-modal-close:hover { color: var(--fg); }
.bio-modal-name {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 6px;
}
.bio-modal-position {
  font-size: 14px;
  color: var(--gray);
  line-height: 1.6;
  margin-bottom: 12px;
}
.bio-modal-talk {
  font-size: 15px;
  color: var(--fg);
  line-height: 1.6;
  background: var(--accent-light);
  border-left: 3px solid var(--accent);
  padding: 10px 14px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 16px;
}
.bio-modal-degree {
  font-size: 13px;
  color: var(--gray);
  margin-bottom: 14px;
}
.bio-modal-keywords {
  font-size: 13px;
  color: var(--accent-dark);
  background: var(--accent-light);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  line-height: 1.7;
}
.bio-modal-divider {
  border-top: 1px solid var(--border);
  margin-bottom: 16px;
}
.bio-modal-abstract-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--gray);
  letter-spacing: .1em;
  margin-bottom: 8px;
}
.bio-modal-bio {
  font-size: 15px;
  color: var(--fg);
  line-height: 1.9;
  white-space: pre-wrap;
}

/* ══════════════════════════════════════
   與會學者
   ══════════════════════════════════════ */
.scholars-subheading {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--fg);
  margin: 32px 0 16px;
  padding-left: 12px;
  border-left: 4px solid var(--accent);
}
.scholars-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.scholars-grid-single {
  grid-template-columns: 1fr;
}
.scholar-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  transition: box-shadow var(--transition), background var(--transition);
}
.scholar-card:hover { box-shadow: var(--shadow-md); background: var(--card-bg); }
.scholar-card .name {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 4px;
}
.scholar-card .name-en {
  font-size: 13px;
  color: var(--gray);
  margin-bottom: 8px;
}
.scholar-card .position {
  font-size: 14px;
  color: var(--gray);
  margin-bottom: 10px;
  line-height: 1.5;
}
.scholar-card .talk-title {
  font-size: 17px;
  color: var(--fg);
  line-height: 1.6;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}
.scholar-card .fields {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.field-tag {
  background: var(--secondary);
  color: var(--fg);
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 9999px;
  border: 1px solid var(--border);
}

/* ══════════════════════════════════════
   主題演講
   ══════════════════════════════════════ */
.keynote-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.keynote-list-single { grid-template-columns: 1fr; }
.keynote-card {
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  padding: 36px;
  transition: border-color var(--transition);
}
.keynote-card:hover { border-color: var(--accent); }
.keynote-card .speaker {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 4px;
}
.keynote-card .affil {
  font-size: 14px;
  color: var(--gray);
  margin-bottom: 10px;
  line-height: 1.5;
}
.keynote-card .talk-title {
  font-size: 17px;
  color: var(--fg);
  line-height: 1.6;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}
.keynote-card .abstract { font-size: 15px; line-height: 1.9; color: var(--fg); }

/* ══════════════════════════════════════
   議程表
   ══════════════════════════════════════ */
.day-heading {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--white);
  background: var(--accent);
  padding: 12px 24px;
  border-radius: var(--radius-md);
  margin-bottom: 24px;
  letter-spacing: .05em;
}
#day2 .day-heading, .schedule-day ~ .day-heading {
  margin-top: 48px;
}
.schedule-day { display: block; }
.schedule-day + .day-heading { margin-top: 48px; }

.schedule-list { display: flex; flex-direction: column; gap: 16px; }
.schedule-item {
  background: var(--white);
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 20px 24px;
  box-shadow: var(--shadow-sm);
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 16px;
  align-items: start;
}
.schedule-item.break {
  background: var(--secondary);
  border-left-color: var(--border);
}
.schedule-time {
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.4;
}
.schedule-item.break .schedule-time { color: var(--gray); }
.schedule-event h4 {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 4px;
}
.schedule-item.break .schedule-event h4 { font-size: 16px; color: var(--gray); }
.schedule-event .meta { font-size: 16px; color: var(--gray); margin-bottom: 6px; }
.schedule-event p { font-size: 17px; color: var(--fg); line-height: 1.6; }

/* ══════════════════════════════════════
   聯絡資訊
   ══════════════════════════════════════ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 48px;
}
.contact-card {
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px;
}
.contact-card .icon {
  font-size: 32px;
  margin-bottom: 16px;
}
.contact-card h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
}
.contact-card p, .contact-card address {
  font-size: 15px;
  line-height: 1.9;
  color: var(--gray);
  font-style: normal;
}

.contact-form-wrap {
  max-width: 680px;
  margin: 0 auto;
}
.contact-form-wrap h2 {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 32px;
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 8px;
}
.form-group label .required { color: #F44336; margin-left: 4px; }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 11px 15px;
  height: 44px;
  font-family: var(--font-sans);
  font-size: 16px;
  color: var(--fg);
  background: var(--white);
  transition: border-color 200ms ease-in, box-shadow 200ms ease-in;
  outline: none;
}
.form-group textarea {
  height: auto;
  min-height: 120px;
  resize: vertical;
  line-height: 1.6;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  border-width: 2px;
  padding: 10px 14px;
  box-shadow: 0 0 0 3px rgba(201,169,97,.1);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

/* ══════════════════════════════════════
   Animations
   ══════════════════════════════════════ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-in { animation: fadeInUp 600ms ease-out both; }
.fade-in-1 { animation-delay: 0ms; }
.fade-in-2 { animation-delay: 100ms; }
.fade-in-3 { animation-delay: 200ms; }
.fade-in-4 { animation-delay: 300ms; }

/* ══════════════════════════════════════
   響應式
   ══════════════════════════════════════ */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .scholars-grid { grid-template-columns: 1fr 1fr; }
  .outcomes-grid { grid-template-columns: 1fr 1fr; }
  .nav-links a { font-size: 15px; }
  .nav-logo-main { font-size: 17px; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-logo-img { height: 40px; }
  .nav-logo-main { font-size: 15px; }

  .hero { height: 336px; }
  .hero-content h1 { font-size: 36px; }
  .hero-content .subtitle { font-size: 18px; }

  .page-header { padding: 64px 0; }
  .page-header h1 { font-size: 32px; }
  .section-title { font-size: 28px; }
  .section { padding: 48px 0; }

  .intro-box { padding: 32px 24px; }
  .intro-grid { grid-template-columns: 1fr; gap: 24px; }

  .stats-grid { grid-template-columns: 1fr; }
  .stat-item { border-right: none; border-bottom: 1px solid var(--border); }
  .stat-item:last-child { border-bottom: none; }

  .purpose-grid { grid-template-columns: 1fr; }
  .outcomes-grid { grid-template-columns: 1fr; }

  .scholars-grid { grid-template-columns: 1fr; }
  .keynote-list { grid-template-columns: 1fr; }

  .keynote-card { padding: 24px; }

  .schedule-item { grid-template-columns: 1fr; gap: 8px; }

  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }

  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .intro-box { padding: 24px 16px; }
  .hero-btns { flex-direction: column; align-items: center; }
  .cta-btns { flex-direction: column; align-items: center; }
  .page-header { padding: 48px 0; }
  .page-header h1 { font-size: 26px; }
  .section-title { font-size: 22px; }
}