:root {
  --sn-teal: #2BB0C1;
  --sn-teal-dark: #1e8f9d;
  --sn-navy: #031B3D;
  --sn-ink: #16303a;
  --sn-muted: #5b6b73;
  --sn-bg: #f3f7f8;
  --sn-card: #ffffff;
  --sn-line: #d9e6ea;
  --sn-radius: 18px;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: Montserrat, system-ui, sans-serif;
  background: var(--sn-bg);
  color: var(--sn-ink);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
a { color: var(--sn-teal-dark); }
.sn-wrap { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.sn-header {
  background: var(--sn-navy);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 40;
}
.sn-header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 72px;
}
.sn-brand { display: flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; font-weight: 700; }
.sn-brand img { height: 36px; }
.sn-nav { display: flex; gap: 18px; margin-left: auto; align-items: center; }
.sn-nav a { color: #d7e8ee; text-decoration: none; font-size: 14px; font-weight: 500; }
.sn-nav a:hover { color: #fff; }
.sn-nav-cta {
  background: var(--sn-teal) !important;
  color: #fff !important;
  padding: 8px 14px;
  border-radius: 999px;
}
.sn-study-link {
  color: #fff;
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  border: 1px solid rgba(255,255,255,.4);
  padding: 6px 12px;
  border-radius: 999px;
  white-space: nowrap;
}
.sn-study-link:hover { background: rgba(255,255,255,.12); color: #fff; }
.sn-user { display: flex; gap: 12px; align-items: center; font-size: 13px; color: #b9cdd4; }
.sn-user a { color: #fff; }
.sn-main { flex: 1; padding: 32px 0 80px; }
.sn-footer { background: #fff; border-top: 1px solid var(--sn-line); }
.sn-footer-inner { display: flex; justify-content: space-between; gap: 16px; padding: 20px 0; font-size: 13px; color: var(--sn-muted); flex-wrap: wrap; }
.sn-footer a { margin-left: 16px; color: var(--sn-muted); text-decoration: none; }

.sn-hero {
  background: linear-gradient(135deg, #031B3D 0%, #0a4d5c 55%, #2BB0C1 140%);
  color: #fff;
  border-radius: 28px;
  padding: 48px 40px;
  margin-bottom: 28px;
}
.sn-hero h1 { font-size: clamp(28px, 4vw, 42px); margin: 0 0 8px; font-weight: 700; }
.sn-hero p { margin: 0 0 22px; opacity: .88; }
.sn-search {
  display: flex;
  background: #fff;
  border-radius: 14px;
  overflow: hidden;
  max-width: 640px;
}
.sn-search input { flex: 1; border: 0; padding: 16px 18px; font: inherit; outline: none; color: var(--sn-ink); }
.sn-search button { border: 0; background: var(--sn-teal); color: #fff; padding: 0 22px; font-weight: 600; }
.sn-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.sn-card {
  background: var(--sn-card);
  border: 1px solid var(--sn-line);
  border-radius: var(--sn-radius);
  padding: 22px;
  text-decoration: none;
  color: inherit;
  display: block;
  transition: transform .15s ease, box-shadow .15s ease;
}
.sn-card:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(3,27,61,.08); color: inherit; }
.sn-card i { font-size: 22px; color: var(--sn-teal); }
.sn-card h3 { margin: 12px 0 6px; font-size: 16px; }
.sn-card p { margin: 0; color: var(--sn-muted); font-size: 13px; }
.sn-actions { display: flex; gap: 12px; flex-wrap: wrap; margin: 28px 0; }
.sn-btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--sn-teal); color: #fff; border: 0; border-radius: 12px;
  padding: 12px 18px; font-weight: 600; text-decoration: none;
}
.sn-btn:hover { color: #fff; background: var(--sn-teal-dark); }
.sn-btn.ghost { background: #fff; color: var(--sn-navy); border: 1px solid var(--sn-line); }
.sn-article { background: #fff; border: 1px solid var(--sn-line); border-radius: 24px; padding: 32px; }
.sn-article h1 { margin-top: 0; }
.sn-article .sn-meta { color: var(--sn-muted); font-size: 13px; margin-bottom: 18px; }
.sn-list a { display: block; padding: 16px 0; border-bottom: 1px solid var(--sn-line); text-decoration: none; color: inherit; }
.sn-list a h3 { margin: 0 0 4px; font-size: 16px; }
.sn-form { background: #fff; border: 1px solid var(--sn-line); border-radius: 24px; padding: 28px; }
.sn-form label { font-weight: 600; font-size: 13px; margin-bottom: 6px; display: block; }
.sn-form .form-control, .sn-form .form-select { border-radius: 12px; padding: 12px 14px; }
.sn-locked { background: #f4f8f9; }
.sn-alert { border-radius: 14px; }
.sn-ticket-head { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 20px; }
.sn-badge { display: inline-block; border-radius: 999px; padding: 4px 10px; font-size: 12px; font-weight: 600; }
.sn-badge.new { background: #e8f7ff; color: #0a5f8c; }
.sn-badge.open { background: #e7f8f4; color: #0f7a5c; }
.sn-badge.pending { background: #fff6df; color: #8a6200; }
.sn-badge.on_hold { background: #eee; color: #555; }
.sn-badge.resolved, .sn-badge.closed { background: #eceff3; color: #445; }
.sn-thread { display: flex; flex-direction: column; gap: 14px; }
.sn-msg { background: #fff; border: 1px solid var(--sn-line); border-radius: 16px; padding: 16px 18px; }
.sn-msg.agent { border-left: 4px solid var(--sn-teal); }
.sn-msg.user { border-left: 4px solid var(--sn-navy); }
.sn-msg.system { opacity: .8; font-size: 13px; }
.sn-msg header { display: flex; justify-content: space-between; color: var(--sn-muted); font-size: 12px; margin-bottom: 8px; }
.sn-table { width: 100%; background: #fff; border-radius: 16px; overflow: hidden; }
.sn-table td, .sn-table th { padding: 14px 16px; border-bottom: 1px solid var(--sn-line); }
.sn-hp { position: absolute; left: -9999px; height: 0; overflow: hidden; }

.sn-chat { position: fixed; right: 20px; bottom: 20px; z-index: 50; }
.sn-chat-toggle {
  border: 0; background: var(--sn-navy); color: #fff; border-radius: 999px;
  padding: 12px 18px; display: flex; gap: 8px; align-items: center; font-weight: 600;
  box-shadow: 0 10px 30px rgba(3,27,61,.25);
}
.sn-chat-panel {
  position: absolute; right: 0; bottom: 58px; width: min(380px, calc(100vw - 24px));
  height: 480px; background: #fff; border-radius: 18px; box-shadow: 0 20px 50px rgba(3,27,61,.2);
  display: flex; flex-direction: column; overflow: hidden; border: 1px solid var(--sn-line);
}
.sn-chat-head { background: var(--sn-navy); color: #fff; padding: 14px 16px; display: flex; justify-content: space-between; }
.sn-chat-head small { display: block; opacity: .75; font-size: 11px; }
.sn-chat-head button { background: none; border: 0; color: #fff; font-size: 22px; }
.sn-chat-log { flex: 1; overflow: auto; padding: 14px; display: flex; flex-direction: column; gap: 10px; background: #f7fbfc; }
.sn-bubble { max-width: 90%; padding: 10px 12px; border-radius: 14px; font-size: 13px; line-height: 1.45; }
.sn-bubble.user { align-self: flex-end; background: var(--sn-teal); color: #fff; }
.sn-bubble.assistant { align-self: flex-start; background: #fff; border: 1px solid var(--sn-line); }
.sn-chat-form { display: flex; border-top: 1px solid var(--sn-line); }
.sn-chat-form input { flex: 1; border: 0; padding: 12px; font: inherit; outline: none; }
.sn-chat-form button { border: 0; background: var(--sn-teal); color: #fff; padding: 0 16px; font-weight: 600; }
.sn-cite { display: block; margin-top: 6px; font-size: 12px; }
.sn-escalate { margin-top: 10px; }

@media (min-width: 801px) {
  .sn-study-link { display: none; }
}
@media (max-width: 800px) {
  .sn-nav { display: none; }
  .sn-hero { padding: 28px 20px; }
}