/* ============================================================
   4th WCYNS 2026 — SHARED STYLESHEET
   World Congress of Young Neurosurgeons
   Hong Kong · 30 Oct – 1 Nov 2026
   ============================================================ */

/* ── CSS VARIABLES ─────────────────────────────────────── */
:root {
  --navy:       #1B3A6E;
  --navy-dark:  #0D2347;
  --navy-mid:   #2A5298;
  --blue:       #0080BB;
  --blue-light: #0099CC;
  --gold:       #D4A843;
  --gold-light: #F0C96A;
  --gold-dark:  #B8860B;
  --white:      #FFFFFF;
  --bg:         #F7F9FC;
  --bg-blue:    #EEF4FF;
  --bg-mid:     #E4EEFF;
  --border:     #D5DFEE;
  --border-mid: #C8D8EE;
  --text:       #2C3E50;
  --text-mid:   #3D4A5C;
  --text-muted: #6B7A8D;
  --green:      #27ae60;
  --font-serif: 'Georgia', 'Times New Roman', serif;
  --font-sans:  'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --shadow-sm:  0 2px 8px rgba(27,58,110,0.07);
  --shadow-md:  0 4px 20px rgba(27,58,110,0.10);
  --shadow-lg:  0 8px 32px rgba(27,58,110,0.14);
  --radius:     8px;
  --transition: 0.22s ease;
}

/* ── RESET & BASE ──────────────────────────────────────── */
*, *::before, *::after {
  margin: 0; padding: 0;
  box-sizing: border-box;
}
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
ul { list-style: none; }

/* ── LAYOUT HELPERS ────────────────────────────────────── */
.wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 72px 40px;
}
.wrap-sm { max-width: 800px; margin: 0 auto; padding: 72px 40px; }
.container { max-width: 1120px; margin: 0 auto; padding: 0 40px; }

/* Grid helpers */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

/* ── SECTION HEADER ────────────────────────────────────── */
.sh {
  text-align: center;
  margin-bottom: 48px;
}
.stag {
  display: inline-block;
  background: var(--bg-blue);
  color: var(--blue);
  font-size: 11px; font-weight: 700;
  letter-spacing: 2px; text-transform: uppercase;
  padding: 4px 16px;
  border-radius: 20px;
  border: 1px solid var(--border-mid);
  margin-bottom: 12px;
}
.stag-gold {
  display: inline-block;
  background: #FEF9E7;
  color: var(--gold-dark);
  font-size: 11px; font-weight: 700;
  letter-spacing: 2px; text-transform: uppercase;
  padding: 4px 16px;
  border-radius: 20px;
  border: 1px solid #E8C952;
  margin-bottom: 12px;
}
.stitle {
  font-family: var(--font-serif);
  font-size: 32px; font-weight: 700;
  color: var(--navy);
  margin-bottom: 10px;
  line-height: 1.25;
}
.sdiv {
  width: 48px; height: 3px;
  background: var(--blue);
  margin: 12px auto;
  border-radius: 2px;
}
.sdiv-gold { background: var(--gold); }
.ssub {
  color: var(--text-muted);
  font-size: 15px;
  max-width: 580px;
  margin: 0 auto;
}

/* ── BUTTONS ───────────────────────────────────────────── */
.btn-primary {
  display: inline-block;
  background: var(--navy);
  color: var(--white);
  padding: 13px 28px;
  border-radius: 5px;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.3px;
  border: none;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  font-family: var(--font-sans);
}
.btn-primary:hover {
  background: var(--navy-dark);
  text-decoration: none;
  transform: translateY(-1px);
}
.btn-blue {
  display: inline-block;
  background: var(--blue);
  color: var(--white);
  padding: 13px 28px;
  border-radius: 5px;
  font-weight: 700;
  font-size: 14px;
  border: none; cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  font-family: var(--font-sans);
}
.btn-blue:hover {
  background: var(--blue-light);
  text-decoration: none;
  transform: translateY(-1px);
}
.btn-gold {
  display: inline-block;
  background: var(--gold);
  color: var(--navy-dark);
  padding: 13px 28px;
  border-radius: 5px;
  font-weight: 800;
  font-size: 14px;
  border: none; cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  font-family: var(--font-sans);
}
.btn-gold:hover {
  background: var(--gold-light);
  text-decoration: none;
  transform: translateY(-1px);
}
.btn-outline {
  display: inline-block;
  background: transparent;
  color: var(--navy);
  padding: 12px 26px;
  border-radius: 5px;
  font-weight: 600;
  font-size: 14px;
  border: 2px solid var(--navy);
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-sans);
}
.btn-outline:hover {
  background: var(--navy);
  color: var(--white);
  text-decoration: none;
}
.btn-outline-white {
  display: inline-block;
  background: transparent;
  color: rgba(255,255,255,0.85);
  padding: 12px 26px;
  border-radius: 5px;
  font-weight: 600;
  font-size: 14px;
  border: 2px solid rgba(255,255,255,0.4);
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-sans);
}
.btn-outline-white:hover {
  background: rgba(255,255,255,0.12);
  color: var(--white);
  text-decoration: none;
}
.btn-sm { padding: 9px 20px; font-size: 13px; }
.btn-lg { padding: 15px 36px; font-size: 15px; }

/* ── DIVIDER ────────────────────────────────────────────── */
.divider-bar {
  height: 3px;
  background: linear-gradient(90deg, var(--navy) 0%, var(--blue) 50%, var(--navy) 100%);
}

/* ── TOP ANNOUNCEMENT BAR ─────────────────────────────── */
.top-bar {
  background: var(--navy-dark);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  padding: 9px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 12.5px;
}
.top-bar-left {
  display: flex;
  align-items: center;
  gap: 16px;
  color: rgba(255,255,255,0.75);
  flex-wrap: wrap;
}
.top-bar-left a { color: #7FD4F4; font-weight: 700; }
.top-bar-left a:hover { color: var(--white); text-decoration: underline; }
.top-bar-sep { color: rgba(255,255,255,0.2); }
.top-bar-right { display: flex; gap: 8px; align-items: center; }
.social-btn {
  width: 28px; height: 28px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 10px; font-weight: 800;
  color: rgba(255,255,255,0.7);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}
.social-btn:hover {
  background: rgba(255,255,255,0.18);
  color: var(--white);
  text-decoration: none;
}

/* ── NAVIGATION ────────────────────────────────────────── */
nav {
  background: var(--white);
  border-bottom: 2px solid var(--navy);
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}
.nav-brand:hover { text-decoration: none; }
.nav-logo-box {
  background: var(--bg-blue);
  border: 1px solid var(--border-mid);
  border-radius: 8px;
  padding: 6px 12px;
  text-align: center;
  flex-shrink: 0;
}
.logo-yr {
  font-size: 20px; font-weight: 900;
  color: var(--navy);
  font-family: var(--font-serif);
  line-height: 1;
}
.logo-sub {
  font-size: 8px; font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 1px; text-transform: uppercase;
}
.nav-text .nt1 {
  font-size: 14px; font-weight: 700;
  font-family: var(--font-serif);
  color: var(--navy);
  line-height: 1.2;
  white-space: nowrap;
}
.nav-text .nt2 {
  font-size: 11px;
  color: var(--blue);
  font-weight: 600;
  letter-spacing: 0.3px;
}

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
}
.nav-links li { position: relative; }
.nav-links a {
  color: var(--text);
  padding: 8px 9px;
  border-radius: 5px;
  font-size: 12.5px;
  font-weight: 500;
  white-space: nowrap;
  transition: all var(--transition);
  display: block;
}
.nav-links a:hover {
  color: var(--navy);
  background: var(--bg-blue);
  text-decoration: none;
}
.nav-links a.active {
  color: var(--navy);
  font-weight: 700;
}
.nav-cta {
  background: var(--navy) !important;
  color: var(--white) !important;
  font-weight: 700 !important;
  padding: 8px 14px !important;
  border-radius: 5px !important;
  margin-left: 4px;
}
.nav-cta:hover {
  background: var(--navy-dark) !important;
  color: var(--white) !important;
}

/* Dropdown */
.has-drop { position: relative; }
.has-drop > a::after { content: " ▾"; font-size: 9px; }
.dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 8px 0;
  z-index: 200;
}
.has-drop:hover .dropdown { display: block; }
.dropdown a {
  display: block;
  padding: 9px 18px;
  font-size: 13px;
  color: var(--text);
  border-radius: 0;
}
.dropdown a:hover {
  background: var(--bg-blue);
  color: var(--navy);
  text-decoration: none;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
  background: none; border: none;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--navy);
  border-radius: 2px;
  transition: all 0.3s;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav overlay */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: var(--white);
  z-index: 1100;
  overflow-y: auto;
  padding: 80px 32px 40px;
  flex-direction: column;
  gap: 4px;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  display: block;
  padding: 14px 0;
  font-size: 18px; font-weight: 600;
  color: var(--navy);
  border-bottom: 1px solid var(--bg-blue);
}
.mobile-nav a.mobile-cta {
  margin-top: 16px;
  background: var(--navy);
  color: var(--white);
  text-align: center;
  padding: 16px;
  border-radius: 6px;
  font-size: 16px;
  border-bottom: none;
}
.mobile-nav-close {
  position: absolute;
  top: 20px; right: 24px;
  background: none; border: none;
  font-size: 28px; cursor: pointer;
  color: var(--navy);
}

/* ── PAGE HERO BANNER (inner pages) ───────────────────── */
.page-hero {
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy-mid) 100%);
  padding: 60px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="15" cy="20" r="30" fill="rgba(255,255,255,0.02)"/><circle cx="85" cy="80" r="40" fill="rgba(255,255,255,0.02)"/></svg>') center/cover;
}
.page-hero-inner { position: relative; z-index: 1; max-width: 700px; margin: 0 auto; }
.page-hero .stag { background: rgba(255,255,255,0.1); color: rgba(255,255,255,0.85); border-color: rgba(255,255,255,0.2); }
.page-hero .stitle { color: var(--white); font-size: 36px; }
.page-hero .sdiv { background: var(--gold); }
.page-hero .ssub { color: rgba(255,255,255,0.7); }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 16px;
  justify-content: center;
}
.breadcrumb a { color: rgba(255,255,255,0.6); }
.breadcrumb a:hover { color: var(--white); }
.breadcrumb-sep { font-size: 10px; }

/* ── HERO (homepage) ───────────────────────────────────── */
.hero { position: relative; background: #030A18; }
.hero-banner-img {
  display: block;
  width: 100%; height: auto;
  max-height: 580px;
  object-fit: cover;
  object-position: center top;
}
.hero-action-strip {
  background: linear-gradient(90deg, var(--navy-dark) 0%, var(--navy) 50%, var(--navy-dark) 100%);
  border-top: 2px solid rgba(0,160,200,0.4);
  border-bottom: 2px solid rgba(0,160,200,0.15);
  padding: 22px 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}
.hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.hero-ctas .btn-primary {
  background: var(--blue);
  color: var(--white);
  font-size: 14px;
  padding: 13px 24px;
}
.hero-ctas .btn-primary:hover { background: var(--blue-light); }
.hero-ctas .btn-outline-white { font-size: 13px; padding: 11px 20px; }

/* Countdown */
.countdown {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 10px;
  padding: 16px 22px;
  display: flex;
  align-items: center;
  gap: 18px;
  backdrop-filter: blur(8px);
}
.cd-label {
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #7FD4F4;
  font-weight: 700;
  white-space: nowrap;
}
.cd-digits { display: flex; gap: 8px; }
.cd-unit {
  background: rgba(0,0,0,0.3);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 6px;
  padding: 10px 8px;
  text-align: center;
  min-width: 52px;
}
.cd-num {
  font-size: 26px; font-weight: 900;
  color: #7FD4F4;
  line-height: 1;
  font-family: var(--font-serif);
}
.cd-lbl {
  font-size: 8px; color: rgba(255,255,255,0.45);
  letter-spacing: 1px; text-transform: uppercase;
  margin-top: 3px;
}
.cd-eb {
  font-size: 11px;
  color: var(--gold-light);
  white-space: nowrap;
  line-height: 1.5;
}
.cd-eb span { color: rgba(255,255,255,0.4); font-size: 10px; display: block; }

/* ── WELCOME SECTION ──────────────────────────────────── */
.welcome-sec {
  background: var(--navy);
  padding: 56px 40px;
}
.welcome-inner {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}
.welcome-inner .stag { background: rgba(255,255,255,0.08); color: #7FD4F4; border-color: rgba(127,212,244,0.3); }
.welcome-title {
  font-family: var(--font-serif);
  font-size: 28px; color: var(--white);
  margin-bottom: 16px;
  line-height: 1.3;
}
.welcome-text {
  color: rgba(255,255,255,0.75);
  font-size: 16px;
  line-height: 1.8;
  max-width: 740px;
  margin: 0 auto 24px;
}
.welcome-badges {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 28px;
}
.welcome-badge {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 6px;
  padding: 14px 20px;
  text-align: center;
  min-width: 120px;
}
.wb-num {
  font-family: var(--font-serif);
  font-size: 26px; font-weight: 900;
  color: var(--gold-light);
  line-height: 1;
}
.wb-lbl {
  font-size: 11px;
  color: rgba(255,255,255,0.55);
  margin-top: 4px;
  font-weight: 600;
}

/* ── STATS BAR ─────────────────────────────────────────── */
.stats-bar {
  background: linear-gradient(90deg, var(--blue) 0%, var(--blue-light) 50%, var(--blue) 100%);
  padding: 20px 60px;
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 12px;
}
.stat-item { text-align: center; color: var(--white); }
.stat-num {
  font-family: var(--font-serif);
  font-size: 30px; font-weight: 900;
  line-height: 1;
}
.stat-lbl {
  font-size: 11px; font-weight: 700;
  opacity: 0.85; letter-spacing: 0.5px;
  margin-top: 3px;
}

/* ── IMPORTANT DATES ──────────────────────────────────── */
.dates-sec { background: var(--bg-blue); }
.dates-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.date-card {
  background: var(--white);
  border: 1px solid var(--border-mid);
  border-radius: var(--radius);
  padding: 24px 18px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.date-card:hover {
  border-color: var(--navy);
  box-shadow: var(--shadow-md);
}
.date-icon { font-size: 26px; margin-bottom: 10px; }
.date-type {
  font-size: 10.5px; letter-spacing: 1.5px;
  text-transform: uppercase; color: var(--blue);
  font-weight: 700; margin-bottom: 7px;
}
.date-val {
  font-size: 18px; font-weight: 800;
  color: var(--navy);
  font-family: var(--font-serif);
}
.date-sub { font-size: 12px; color: var(--text-muted); margin-top: 5px; }

/* ── ABOUT SECTION ─────────────────────────────────────── */
.about-sec { background: var(--white); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.about-txt p { color: var(--text-mid); font-size: 15px; margin-bottom: 15px; line-height: 1.75; }
.about-txt h3 {
  font-family: var(--font-serif);
  font-size: 26px; color: var(--navy);
  margin-bottom: 18px;
}
.org-logos { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 24px; align-items: center; }
.org-chip {
  background: var(--bg-blue);
  border: 1px solid var(--border-mid);
  border-radius: 6px;
  padding: 10px 16px;
  font-size: 12px; font-weight: 700;
  color: var(--navy);
}
.org-logo-box {
  background: var(--white);
  border: 1px solid var(--border-mid);
  border-radius: 8px;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 100px;
  min-height: 56px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), border-color var(--transition);
}
.org-logo-box:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--blue);
}
.org-logo-box img {
  max-height: 40px;
  max-width: 120px;
  width: auto;
  object-fit: contain;
}
.org-logo-name {
  font-size: 11px; font-weight: 800;
  color: var(--navy);
  letter-spacing: 0.8px;
  text-transform: uppercase;
  text-align: center;
  line-height: 1.3;
}
.about-visual {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.about-img-wrap {
  height: 240px;
  overflow: hidden;
}
.about-img-wrap img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center top;
}
.about-stats-row {
  background: var(--bg-blue);
  padding: 20px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  border-top: 1px solid var(--border);
}
.about-stat {
  background: var(--white);
  border: 1px solid var(--border-mid);
  border-radius: 6px;
  padding: 14px 12px;
  text-align: center;
}
.as-num {
  font-family: var(--font-serif);
  font-size: 22px; font-weight: 900;
  color: var(--navy);
}
.as-lbl { font-size: 10px; color: var(--text-muted); font-weight: 600; margin-top: 3px; }

/* ── REGISTRATION FEES ─────────────────────────────────── */
.reg-sec { background: var(--bg); }
.scholarship-banner {
  background: linear-gradient(135deg, var(--bg-blue), var(--bg-mid));
  border: 1px solid var(--border-mid);
  border-radius: 10px;
  padding: 26px 30px;
  margin-bottom: 28px;
}
.sb-title {
  font-family: var(--font-serif);
  font-size: 20px; color: var(--navy);
  font-weight: 700; margin-bottom: 6px;
}
.sb-sub { color: var(--text-muted); font-size: 13px; margin-bottom: 18px; }
.sb-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.sb-item {
  background: var(--white);
  border: 1px solid var(--border-mid);
  border-radius: 6px;
  padding: 16px 14px;
  text-align: center;
}
.sb-amount {
  font-family: var(--font-serif);
  font-size: 26px; font-weight: 900;
  color: var(--gold-dark);
}
.sb-lbl { font-size: 11px; color: var(--text-muted); margin-top: 5px; line-height: 1.4; }
.reg-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 28px; }
.reg-card {
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: 10px;
  padding: 30px 26px;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}
.reg-card:hover { box-shadow: var(--shadow-md); }
.reg-card.featured { border-color: var(--blue); box-shadow: 0 0 28px rgba(0,128,187,0.12); }
.pop-badge {
  position: absolute; top: -13px; left: 50%;
  transform: translateX(-50%);
  background: var(--blue); color: var(--white);
  font-size: 10px; font-weight: 800;
  letter-spacing: 1px; text-transform: uppercase;
  padding: 3px 16px; border-radius: 20px;
  white-space: nowrap;
}
.reg-type { font-size: 11px; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; color: var(--text-muted); margin-bottom: 5px; }
.reg-audience { font-size: 20px; font-weight: 800; color: var(--navy); margin-bottom: 4px; font-family: var(--font-serif); }
.reg-price { font-size: 40px; font-weight: 900; color: var(--blue); line-height: 1; }
.reg-price span { font-size: 14px; font-weight: 400; color: var(--text-muted); }
.reg-period { font-size: 12px; color: var(--text-muted); margin: 7px 0 18px; font-weight: 600; }
.reg-incl { margin-bottom: 22px; }
.reg-incl li {
  padding: 5px 0;
  font-size: 13.5px;
  color: var(--text-mid);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.reg-incl li::before {
  content: "✓";
  color: var(--green);
  font-weight: 800;
  flex-shrink: 0;
  margin-top: 1px;
}
.btn-reg {
  width: 100%; padding: 13px;
  background: var(--navy); color: var(--white);
  border: none; border-radius: 5px;
  font-weight: 700; font-size: 14px;
  cursor: pointer; font-family: var(--font-sans);
  transition: background var(--transition);
}
.btn-reg:hover { background: var(--navy-dark); }
.btn-reg.feat { background: var(--blue); }
.btn-reg.feat:hover { background: var(--blue-light); }
.stripe-note {
  text-align: center; margin-top: 9px;
  font-size: 11.5px; color: var(--text-muted);
  display: flex; align-items: center;
  justify-content: center; gap: 5px;
}
.stripe-chip {
  background: #635bff; color: var(--white);
  border-radius: 3px; font-size: 9px;
  font-weight: 900; padding: 2px 7px;
}
.cancel-box {
  background: #FFFBF0;
  border: 1px solid #E8D87A;
  border-radius: 8px;
  padding: 20px 24px;
  font-size: 13px; color: #5A4A1C;
}
.cancel-box strong { color: #3A2A00; }
.cancel-list { margin: 10px 0 0 18px; }
.cancel-list li { margin-bottom: 5px; }

/* ── REGISTRATION FORM ──────────────────────────────────── */
.form-sec { background: var(--white); }
.form-outer {
  max-width: 740px; margin: 0 auto;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px; padding: 44px;
}
.form-title {
  font-family: var(--font-serif);
  font-size: 22px; color: var(--navy);
  text-align: center; margin-bottom: 4px;
}
.form-sub { text-align: center; font-size: 13px; color: var(--text-muted); margin-bottom: 28px; }
.steps-bar {
  display: flex; justify-content: space-between;
  margin-bottom: 32px;
  position: relative;
}
.steps-bar::before {
  content: ''; position: absolute;
  top: 15px; left: 15px; right: 15px;
  height: 2px; background: var(--border);
}
.step { display: flex; flex-direction: column; align-items: center; gap: 6px; z-index: 1; }
.step-circle {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--white);
  border: 2px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700;
  color: var(--text-muted);
}
.step-circle.active { background: var(--blue); border-color: var(--blue); color: var(--white); }
.step-circle.done { background: var(--green); border-color: var(--green); color: var(--white); }
.step-lbl { font-size: 10px; color: var(--text-muted); text-align: center; }
.frow { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.fg { display: flex; flex-direction: column; gap: 5px; margin-bottom: 16px; }
.fg label { font-size: 12.5px; font-weight: 600; color: var(--text-mid); }
.fc {
  padding: 11px 14px;
  border: 1px solid var(--border-mid);
  border-radius: 5px;
  font-size: 14px; color: var(--text);
  background: var(--white);
  font-family: var(--font-sans);
  transition: border-color var(--transition);
  width: 100%;
}
.fc:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(0,128,187,0.1); }
.fc::placeholder { color: #B0BAC8; }
.payment-area {
  background: #F3F0FF;
  border: 1px dashed #7C6BFF;
  border-radius: 8px;
  padding: 18px;
  margin-top: 14px;
  display: flex; align-items: center; gap: 18px;
}
.pa-label { color: #5046A8; font-weight: 800; font-size: 14px; }
.pa-note { font-size: 11.5px; color: var(--text-muted); margin-top: 3px; }
.card-chips { display: flex; gap: 6px; margin-left: auto; }
.card-chip {
  background: var(--white);
  border: 1px solid #e0e0e0;
  border-radius: 4px;
  padding: 3px 10px;
  font-size: 10px; font-weight: 800;
}
.form-actions { display: flex; justify-content: flex-end; gap: 12px; margin-top: 22px; }
.btn-next {
  background: var(--blue); color: var(--white);
  padding: 12px 30px; border: none;
  border-radius: 5px; font-weight: 800;
  font-size: 14px; cursor: pointer;
  font-family: var(--font-sans);
  transition: background var(--transition);
}
.btn-next:hover { background: var(--blue-light); }

/* ── SPEAKERS ──────────────────────────────────────────── */
.speakers-sec { background: var(--bg); }
.speakers-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.spk-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.spk-card:hover {
  border-color: var(--navy);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.spk-photo {
  height: 140px;
  background: linear-gradient(135deg, var(--bg-blue), var(--bg-mid));
  display: flex; align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 12px; font-weight: 600;
  overflow: hidden;
}
.spk-photo img { width: 100%; height: 100%; object-fit: cover; }
.spk-body { padding: 16px; }
.spk-name { font-weight: 700; color: var(--navy); font-size: 14px; margin-bottom: 4px; }
.spk-role { font-size: 12px; color: var(--text-muted); margin-bottom: 7px; line-height: 1.4; }
.spk-country {
  font-size: 11px;
  background: var(--bg-blue);
  border: 1px solid var(--border-mid);
  display: inline-block;
  padding: 2px 10px;
  border-radius: 20px;
  color: var(--blue);
  font-weight: 600;
}
.spk-more {
  background: var(--bg-blue);
  border: 1px dashed var(--border-mid);
  display: flex; align-items: center;
  justify-content: center;
  min-height: 200px;
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
  border-radius: 10px;
}
.spk-more-inner .plus { font-size: 28px; margin-bottom: 8px; color: var(--blue); }

/* ── PROGRAMME ─────────────────────────────────────────── */
.prog-sec { background: var(--white); }
.day-tabs-wrap { overflow-x: auto; margin-bottom: 32px; }
.day-tabs {
  display: flex; gap: 6px;
  background: var(--bg-blue);
  padding: 6px; border-radius: 8px;
  width: fit-content;
}
.dtab {
  padding: 10px 24px;
  border-radius: 5px;
  font-size: 13px; font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition);
  border: none; background: none;
  font-family: var(--font-sans);
}
.dtab:hover { color: var(--navy); background: rgba(255,255,255,0.6); }
.dtab.active { background: var(--navy); color: var(--white); }
.day-schedule { display: none; }
.day-schedule.active { display: block; }
.sch-row {
  display: flex; gap: 18px;
  padding: 16px 0;
  border-bottom: 1px solid var(--bg-blue);
  align-items: flex-start;
}
.sch-row:last-child { border-bottom: none; }
.sch-time {
  min-width: 120px;
  color: var(--blue);
  font-size: 13px; font-weight: 600;
  padding-top: 2px;
  flex-shrink: 0;
}
.sch-body { flex: 1; }
.sch-title { font-size: 15px; font-weight: 700; color: var(--navy); margin-bottom: 3px; }
.sch-spk { font-size: 12.5px; color: var(--text-muted); }
.sch-tag {
  display: inline-block; padding: 3px 12px;
  border-radius: 20px; font-size: 10px;
  font-weight: 700; letter-spacing: 0.5px;
  margin-top: 6px;
}
.t-key { background: #E0F0FF; color: #005F99; }
.t-wks { background: #E0F5E9; color: #1A7A41; }
.t-pan { background: #FEF9E7; color: #8B6B00; }
.t-soc { background: #F3EBF9; color: #6B2F9A; }
.t-cer { background: #FDEDEC; color: #B03020; }

/* ── ABSTRACT ──────────────────────────────────────────── */
.abstract-sec { background: var(--bg); }
.abstract-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.abs-steps { margin-bottom: 24px; }
.abs-step {
  display: flex; gap: 16px;
  margin-bottom: 18px;
  align-items: flex-start;
}
.abs-num {
  width: 30px; height: 30px;
  background: var(--blue); color: var(--white);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 800;
  flex-shrink: 0; margin-top: 1px;
}
.abs-step-text strong { display: block; color: var(--navy); font-size: 14px; margin-bottom: 2px; }
.abs-step-text span { font-size: 13px; color: var(--text-muted); }
.topics-wrap { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.topic-chip {
  background: var(--bg-blue);
  border: 1px solid var(--border-mid);
  border-radius: 20px;
  padding: 6px 15px;
  font-size: 12.5px; color: var(--text-mid);
  font-weight: 500;
}
.topic-chip:hover {
  background: var(--navy);
  color: var(--white);
  border-color: var(--navy);
}
.prize-box {
  background: linear-gradient(135deg, var(--bg-blue), var(--bg-mid));
  border: 1px solid var(--border-mid);
  border-left: 4px solid var(--blue);
  border-radius: 8px;
  padding: 20px 22px;
}
.prize-box h4 {
  color: var(--blue); font-size: 14px;
  font-weight: 700; margin-bottom: 12px;
}
.prize-box ul { padding-left: 18px; }
.prize-box ul li {
  color: var(--text-mid);
  font-size: 13px; margin-bottom: 5px;
  list-style: disc;
}

/* ── VENUE ─────────────────────────────────────────────── */
.venue-sec { background: var(--bg-blue); }
.venue-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.venue-card {
  background: var(--white);
  border: 1px solid var(--border-mid);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.venue-card-header {
  background: linear-gradient(135deg, var(--bg-blue), var(--bg-mid));
  padding: 26px 24px;
  text-align: center;
  border-bottom: 1px solid var(--border-mid);
}
.venue-icon { font-size: 42px; margin-bottom: 10px; }
.venue-name {
  font-family: var(--font-serif);
  font-size: 18px; color: var(--navy);
  font-weight: 700; margin-bottom: 6px;
}
.venue-addr { color: var(--text-muted); font-size: 13px; line-height: 1.7; }
.venue-card-body { padding: 20px 24px; }
.venue-badge {
  background: var(--bg-blue);
  border: 1px solid var(--border-mid);
  border-radius: 4px; color: var(--blue);
  font-size: 10px; font-weight: 700;
  letter-spacing: 1.5px; text-transform: uppercase;
  padding: 4px 12px;
  display: inline-block; margin-bottom: 16px;
}
.venue-fact { display: flex; gap: 10px; margin-bottom: 10px; align-items: flex-start; }
.venue-fact strong { color: var(--navy); font-size: 12px; min-width: 76px; flex-shrink: 0; }
.venue-fact span { font-size: 12.5px; color: var(--text-muted); line-height: 1.5; }
.venue-highlights { margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--border); }
.venue-highlights h4 {
  color: var(--blue); font-size: 11px;
  font-weight: 700; letter-spacing: 1.5px;
  text-transform: uppercase; margin-bottom: 12px;
}
.vh-item { display: flex; gap: 10px; align-items: flex-start; margin-bottom: 9px; }
.vh-bullet { width: 6px; height: 6px; background: var(--blue); border-radius: 50%; margin-top: 7px; flex-shrink: 0; }
.vh-text { font-size: 13px; color: var(--text-muted); line-height: 1.5; }
.transport-card {
  background: var(--white);
  border: 1px solid var(--border-mid);
  border-radius: 10px;
  padding: 28px;
  box-shadow: var(--shadow-sm);
}
.transport-card h3 {
  font-family: var(--font-serif);
  font-size: 20px; color: var(--navy);
  margin-bottom: 20px;
}
.vd-item { display: flex; gap: 14px; margin-bottom: 16px; align-items: flex-start; }
.vd-icon {
  width: 36px; height: 36px;
  background: var(--bg-blue);
  border: 1px solid var(--border-mid);
  border-radius: 50%;
  display: flex; align-items: center;
  justify-content: center; font-size: 16px;
  flex-shrink: 0;
}
.vd-text strong { display: block; font-size: 13px; color: var(--blue); margin-bottom: 2px; }
.vd-text span { font-size: 13px; color: var(--text-muted); line-height: 1.5; }
.venue-photo-strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 36px; }
.vp-card {
  background: var(--white);
  border: 1px solid var(--border-mid);
  border-radius: 8px; overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.vp-img {
  height: 140px;
  background: linear-gradient(135deg, var(--bg-blue), var(--bg-mid));
  display: flex; align-items: center;
  justify-content: center; font-size: 40px;
}
.vp-cap { padding: 12px 16px; }
.vp-cap strong { display: block; color: var(--navy); font-size: 13px; font-weight: 700; margin-bottom: 3px; }
.vp-cap span { font-size: 12px; color: var(--text-muted); line-height: 1.5; display: block; }
.hotel-section { margin-top: 36px; padding-top: 28px; border-top: 1px solid var(--border-mid); }
.hotel-section-title {
  font-family: var(--font-serif);
  font-size: 16px; color: var(--navy);
  margin-bottom: 16px; font-weight: 700;
}
.hotel-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.hotel-chip {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 6px; padding: 14px 16px;
  box-shadow: var(--shadow-sm);
}
.hotel-chip strong { display: block; color: var(--navy); font-size: 13px; margin-bottom: 3px; }
.hotel-chip span { font-size: 12px; color: var(--text-muted); }

/* ── SPONSORS ──────────────────────────────────────────── */
.sponsors-sec { background: var(--bg); }
.sp-tier { margin-bottom: 30px; }
.sp-tier-label {
  font-size: 11px; font-weight: 800;
  letter-spacing: 2px; text-transform: uppercase;
  color: var(--text-muted); margin-bottom: 12px;
  padding-bottom: 7px; border-bottom: 1px solid var(--border);
}
.sp-logos { display: flex; gap: 12px; flex-wrap: wrap; }
.sp-box {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 16px 26px;
  font-size: 13px; font-weight: 700;
  color: var(--navy);
  min-width: 130px; text-align: center;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}
.sp-box:hover { box-shadow: var(--shadow-md); }
.sp-box.lg { min-width: 170px; font-size: 15px; padding: 20px 30px; }
.sp-cta {
  background: linear-gradient(135deg, var(--navy), var(--navy-mid));
  border-radius: 12px;
  padding: 32px 38px;
  display: flex; align-items: center;
  justify-content: space-between; gap: 24px;
  flex-wrap: wrap;
  margin-top: 8px;
}
.sp-cta-text h4 {
  font-family: var(--font-serif);
  font-size: 22px; color: var(--white);
  margin-bottom: 8px;
}
.sp-cta-text p { font-size: 13.5px; color: rgba(255,255,255,0.65); max-width: 560px; line-height: 1.6; }

/* ── FAQ ────────────────────────────────────────────────── */
.faq-sec { background: var(--white); }
.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px 22px;
  background: var(--bg);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.faq-item:hover { border-color: var(--navy); box-shadow: var(--shadow-sm); }
.faq-q {
  font-weight: 700; color: var(--navy);
  font-size: 14px; margin-bottom: 9px;
  display: flex; align-items: flex-start; gap: 10px;
}
.faq-q::before {
  content: 'Q';
  background: var(--blue); color: var(--white);
  width: 22px; height: 22px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 10px; font-weight: 900; flex-shrink: 0; margin-top: 0px;
}
.faq-a { font-size: 13.5px; color: var(--text-muted); padding-left: 32px; line-height: 1.65; }

/* ── CONTACT ────────────────────────────────────────────── */
.contact-sec { background: var(--bg-blue); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; }
.contact-info h3 {
  font-family: var(--font-serif);
  font-size: 22px; color: var(--navy);
  margin-bottom: 20px;
}
.ci-item { display: flex; gap: 14px; margin-bottom: 16px; align-items: flex-start; }
.ci-icon {
  width: 36px; height: 36px;
  background: var(--white);
  border: 1px solid var(--border-mid);
  border-radius: 50%;
  display: flex; align-items: center;
  justify-content: center; font-size: 15px;
  flex-shrink: 0;
}
.ci-text strong { display: block; font-size: 13px; color: var(--blue); margin-bottom: 2px; }
.ci-text span { font-size: 13px; color: var(--text-muted); line-height: 1.5; }
.contact-form {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 30px;
  box-shadow: var(--shadow-sm);
}
.contact-form h4 {
  font-family: var(--font-serif);
  font-size: 18px; color: var(--navy);
  margin-bottom: 20px;
}
.mi {
  width: 100%; padding: 11px 14px;
  border: 1px solid var(--border-mid);
  border-radius: 5px;
  background: var(--white);
  color: var(--text);
  font-size: 14px; margin-bottom: 12px;
  font-family: var(--font-sans);
  transition: border-color var(--transition);
}
.mi:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(0,128,187,0.1); }
.mi::placeholder { color: #B0BAC8; }
.mta {
  width: 100%; height: 90px;
  padding: 11px 14px;
  border: 1px solid var(--border-mid);
  border-radius: 5px;
  background: var(--white);
  color: var(--text);
  font-size: 14px; margin-bottom: 12px;
  resize: vertical; font-family: var(--font-sans);
}
.mta:focus { outline: none; border-color: var(--blue); }
.btn-send {
  width: 100%; padding: 13px;
  background: var(--navy); color: var(--white);
  border: none; border-radius: 5px;
  font-weight: 800; font-size: 14px;
  cursor: pointer; font-family: var(--font-sans);
  transition: background var(--transition);
}
.btn-send:hover { background: var(--navy-dark); }

/* ── FOOTER ─────────────────────────────────────────────── */
footer {
  background: var(--white);
  border-top: 3px solid var(--navy);
  padding: 50px 60px 24px;
  color: var(--text-muted);
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
}
.footer-brand .brand-name {
  font-family: var(--font-serif);
  font-size: 16px; font-weight: 700;
  color: var(--navy);
}
.footer-brand .brand-sub { font-size: 12px; color: var(--blue); margin-bottom: 10px; }
.footer-brand p { font-size: 12.5px; color: var(--text-muted); line-height: 1.7; }
.footer-col h5 {
  color: var(--navy); font-size: 11px;
  font-weight: 700; letter-spacing: 1.5px;
  text-transform: uppercase; margin-bottom: 14px;
}
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a {
  color: var(--text-muted); font-size: 13px;
  transition: color var(--transition);
}
.footer-col ul li a:hover { color: var(--navy); text-decoration: none; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap; gap: 12px;
  font-size: 12px; color: var(--text-muted);
}
.soc-icons { display: flex; gap: 8px; }
.soc-icon {
  width: 32px; height: 32px;
  background: var(--bg-blue);
  border: 1px solid var(--border-mid);
  border-radius: 50%;
  display: flex; align-items: center;
  justify-content: center;
  font-size: 11px; font-weight: 800;
  color: var(--text-muted);
  transition: all var(--transition);
  text-decoration: none;
}
.soc-icon:hover {
  background: var(--navy);
  color: var(--white);
  border-color: var(--navy);
  text-decoration: none;
}

/* ── INFO CARDS / HIGHLIGHTS ───────────────────────────── */
.highlight-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.highlight-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 26px 22px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}
.highlight-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.hc-icon { font-size: 32px; margin-bottom: 12px; }
.hc-title { font-family: var(--font-serif); font-size: 17px; color: var(--navy); margin-bottom: 8px; }
.hc-text { font-size: 13.5px; color: var(--text-muted); line-height: 1.65; }

/* ── TIMELINE / HISTORY ─────────────────────────────────── */
.timeline { max-width: 680px; margin: 0 auto; }
.tl-item { display: flex; gap: 20px; margin-bottom: 28px; position: relative; }
.tl-item::before {
  content: '';
  position: absolute;
  left: 19px; top: 38px;
  width: 2px; bottom: -28px;
  background: var(--border);
}
.tl-item:last-child::before { display: none; }
.tl-dot {
  width: 40px; height: 40px;
  background: var(--bg-blue);
  border: 2px solid var(--border-mid);
  border-radius: 50%;
  display: flex; align-items: center;
  justify-content: center; font-size: 14px;
  flex-shrink: 0;
}
.tl-dot.active { background: var(--navy); border-color: var(--navy); }
.tl-dot.active .tl-num { color: var(--white); }
.tl-num { font-weight: 900; color: var(--navy); font-size: 13px; font-family: var(--font-serif); }
.tl-body { padding-top: 6px; }
.tl-year { font-size: 12px; font-weight: 700; color: var(--blue); margin-bottom: 3px; }
.tl-title { font-size: 15px; font-weight: 700; color: var(--navy); }
.tl-loc { font-size: 12.5px; color: var(--text-muted); }

/* ── NOTICE / ALERT BOXES ───────────────────────────────── */
.alert-info {
  background: var(--bg-blue);
  border: 1px solid var(--border-mid);
  border-left: 4px solid var(--blue);
  border-radius: 6px; padding: 16px 20px;
  font-size: 13.5px; color: var(--text-mid);
  margin-bottom: 20px;
}
.alert-gold {
  background: #FFFBF0;
  border: 1px solid #E8D87A;
  border-left: 4px solid var(--gold);
  border-radius: 6px; padding: 16px 20px;
  font-size: 13.5px; color: #5A4A1C;
  margin-bottom: 20px;
}

/* ── PAGE INTRO SECTION ─────────────────────────────────── */
.page-intro { background: var(--white); padding: 52px 40px 40px; }
.page-intro-inner { max-width: 1120px; margin: 0 auto; }

/* ═══════════════════════════════════════════════════════
   RESPONSIVE — TABLET (≤1000px)
═══════════════════════════════════════════════════════ */
@media (max-width: 1000px) {
  .wrap, .container { padding: 56px 28px; }
  .wrap-sm { padding: 56px 28px; }
  .nav-inner { padding: 0 24px; }
  nav .nav-links { display: none; }
  .hamburger { display: flex; }
  .nav-text { display: none; }

  .footer-top { grid-template-columns: 1fr 1fr; }
  footer { padding: 40px 28px 20px; }

  .dates-grid { grid-template-columns: repeat(2, 1fr); }
  .speakers-grid { grid-template-columns: repeat(2, 1fr); }
  .sb-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .venue-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .abstract-grid { grid-template-columns: 1fr; }
  .reg-grid { grid-template-columns: 1fr; }
  .faq-grid { grid-template-columns: 1fr; }
  .venue-photo-strip { grid-template-columns: 1fr 1fr; }
  .hotel-grid { grid-template-columns: 1fr; }
  .highlight-grid { grid-template-columns: 1fr 1fr; }
  .hero-action-strip { padding: 18px 28px; }
  .stats-bar { padding: 16px 28px; }
}

/* ═══════════════════════════════════════════════════════
   RESPONSIVE — MOBILE (≤640px)
═══════════════════════════════════════════════════════ */
@media (max-width: 640px) {
  .wrap, .container { padding: 44px 18px; }
  .wrap-sm { padding: 44px 18px; }
  .top-bar { padding: 8px 18px; font-size: 11px; }
  .top-bar-left { gap: 10px; }
  .top-bar-sep { display: none; }
  .top-bar-right { display: none; }

  .stitle { font-size: 24px; }
  .sh { margin-bottom: 32px; }

  .nav-inner { padding: 0 18px; }
  .hero-action-strip { flex-direction: column; padding: 16px 18px; }
  .hero-ctas { width: 100%; flex-direction: column; }
  .hero-ctas a { width: 100%; text-align: center; }
  .countdown { width: 100%; justify-content: center; flex-wrap: wrap; }

  .dates-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .date-card { padding: 18px 12px; }

  .welcome-sec { padding: 40px 18px; }
  .welcome-badges { flex-direction: column; align-items: center; }
  .welcome-badge { width: 100%; max-width: 280px; }

  .stats-bar { gap: 16px; }
  .stat-num { font-size: 24px; }

  .speakers-grid { grid-template-columns: 1fr 1fr; gap: 14px; }

  .frow { grid-template-columns: 1fr; }
  .form-outer { padding: 24px 18px; }

  .hero-action-strip .countdown { display: none; }
  .countdown { display: flex; }

  .about-stats-row { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .as-num { font-size: 18px; }

  .steps-bar { gap: 6px; }
  .step-lbl { font-size: 9px; }

  .sb-grid { grid-template-columns: 1fr 1fr; }

  .venue-photo-strip { grid-template-columns: 1fr; }

  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  footer { padding: 32px 18px 16px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }

  .sp-cta { flex-direction: column; padding: 24px 20px; }
  .sp-cta-text p { max-width: 100%; }

  .highlight-grid { grid-template-columns: 1fr; }

  .page-hero { padding: 44px 18px; }
  .page-hero .stitle { font-size: 26px; }

  .day-tabs { flex-direction: column; width: 100%; }
  .sch-row { flex-direction: column; gap: 6px; }
  .sch-time { min-width: unset; }

  .faq-grid { grid-template-columns: 1fr; }

  .about-stats-row { padding: 14px; }
  .hotel-grid { grid-template-columns: 1fr; }
}

/* ── UTILITIES ───────────────────────────────────────────── */
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.mt-0 { margin-top: 0; }
.mt-12 { margin-top: 12px; }
.mt-20 { margin-top: 20px; }
.mt-28 { margin-top: 28px; }
.mt-36 { margin-top: 36px; }
.mb-0 { margin-bottom: 0; }
.mb-12 { margin-bottom: 12px; }
.mb-20 { margin-bottom: 20px; }
.mb-28 { margin-bottom: 28px; }
.flex-center { display: flex; align-items: center; justify-content: center; gap: 14px; flex-wrap: wrap; }
.section-light { background: var(--white); }
.section-bg { background: var(--bg); }
.section-blue { background: var(--bg-blue); }
.section-dark { background: var(--navy); color: var(--white); }