:root {
  --bg: #f6f8fc;
  --surface: #ffffff;
  --surface-soft: #f8fafc;
  --text: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --accent: #1d4ed8;
  --accent-soft: #dbeafe;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: #ffffff;
}

body,
td,
th {
  font-family: "Source Sans Pro", Arial, sans-serif;
  font-size: 17px;
  font-weight: 400;
  line-height: 1.65;
  color: var(--text);
}

body {
  background: #ffffff;
  padding: 0;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease, background-color 0.2s ease;
}

a:focus,
a:hover {
  color: #f5b461;
  text-decoration: none;
}

heading,
sectionheading,
pageheading,
strongred {
  font-family: "Source Sans Pro", Arial, sans-serif;
}

heading {
  font-size: 22px;
  font-weight: 700;
}

sectionheading {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.015em;
}

pageheading {
  display: inline-block;
  font-size: clamp(34px, 5vw, 54px);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.02em;
}

strongred {
  color: #dc2626;
}

table[align="center"] {
  margin-left: auto;
  margin-right: auto;
}

body > table[width="840"] {
  width: min(100%, 1080px) !important;
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

body > table[width="840"] > tbody > tr > td {
  padding: 20px !important;
}

table {
  max-width: 100%;
}

p {
  margin: 0 0 12px;
}

ul {
  margin: 8px 0 10px;
}

hr {
  border: 0;
  height: 1px;
  background: var(--border);
  margin: 16px 0;
}

img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.08);
}

.paper a,
.code a {
  display: inline-block;
  padding: 2px 10px;
  margin: 2px 4px 2px 0;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface-soft);
  font-size: 14px;
  font-weight: 600;
  color: #1e40af;
}

.paper a:focus,
.paper a:hover,
.code a:focus,
.code a:hover {
  color: #0f172a;
  border-color: #f5b461;
  background: #fef3c7;
  text-decoration: none;
}

a.email-scrambled {
  font-family: "PT Sans", "Source Sans Pro", Arial, sans-serif;
  letter-spacing: 0.03em;
}

a.email-scrambled:hover,
a.email-scrambled:focus {
  text-decoration: none;
}

a.email-unscramble-trigger {
  display: inline-block;
  margin-left: 8px;
  padding: 1px 8px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface-soft);
  font-size: 13px;
  font-weight: 700;
  color: #1e40af;
}

a.email-unscramble-trigger:hover,
a.email-unscramble-trigger:focus {
  color: #0f172a;
  border-color: #f5b461;
  background: #fef3c7;
  text-decoration: none;
}

td[width="10%"] {
  color: var(--muted);
  font-weight: 700;
  white-space: nowrap;
}

td[width="90%"] {
  padding-left: 10px;
}

@media (max-width: 900px) {
  body {
    padding: 0;
  }

  body > table[width="840"] {
    border-radius: 0;
  }

  body > table[width="840"] > tbody > tr > td {
    padding: 16px !important;
  }

  td[width="10%"],
  td[width="20%"],
  td[width="30%"],
  td[width="32%"],
  td[width="33%"],
  td[width="50%"],
  td[width="67%"],
  td[width="68%"],
  td[width="70%"],
  td[width="80%"],
  td[width="90%"] {
    display: block;
    width: 100% !important;
  }

  td[width="10%"] {
    padding-bottom: 0 !important;
  }

  td[width="90%"] {
    padding-top: 4px !important;
    padding-left: 0;
  }
}

.flip-card {
  perspective: 900px;
  position: relative;
  cursor: pointer;
}

.flip-card-inner {
  position: relative;
  width: 100%;
  transition: transform 0.7s cubic-bezier(0.4, 0.0, 0.2, 1);
  transform-style: preserve-3d;
}

.flip-card.flipped .flip-card-inner {
  transform: rotateY(180deg);
}

.flip-card-front,
.flip-card-back {
  width: 100%;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.flip-card-front img,
.flip-card-back img {
  display: block;
  width: 100%;
  border-radius: 15px;
}

.flip-card-back {
  position: absolute;
  top: 0;
  left: 0;
  transform: rotateY(180deg);
}

.flip-dots {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 10px;
}

.flip-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #cbd5e1;
  transition: background 0.3s ease, transform 0.3s ease;
}

.flip-dot.active {
  background: var(--accent);
  transform: scale(1.25);
}

.flip-card.flipped .flip-dot:first-child {
  background: #cbd5e1;
  transform: scale(1);
}

.flip-card.flipped .flip-dot:last-child {
  background: var(--accent);
  transform: scale(1.25);
}

.primary-link {
  display: inline-block;
  padding: 6px 18px;
  margin: 3px 4px;
  border-radius: 999px;
  border: 1.5px solid var(--accent);
  background: var(--accent-soft);
  font-size: 17px;
  font-weight: 700;
  color: #1e40af;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.primary-link:hover,
.primary-link:focus {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

td[width="33%"] img {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

td[width="33%"] img:hover {
  transform: scale(1.05);
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.15);
}

.highlight-link {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 999px;
  border: 1.5px solid #d1001f;
  background: #fef2f2;
  color: #d1001f !important;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.highlight-link:hover,
.highlight-link:focus {
  color: #ffffff !important;
  background: #d1001f;
  border-color: #d1001f;
}