/* Talks */
.talks {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.talk {
  display: flex;
  flex-direction: column;
  padding: 30px;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.talk:hover {
  transform: translateY(-4px);
}

.talk-num {
  font-family: var(--serif);
  font-size: 18px;
  color: var(--royal);
}

.talk h3 {
  margin-top: 18px;
  font-family: var(--serif);
  font-size: 34px;
}

.talk > p {
  margin-top: 12px;
  font-size: 15px;
  color: var(--ink-2);
}

.talk ul {
  margin: 20px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
  display: grid;
  gap: 8px;
  font-size: 14px;
  color: var(--ink-2);
}

.talk li::before {
  content: "→ ";
  color: var(--royal);
}

.talk-for {
  margin-top: auto;
  padding-top: 20px;
  font-size: 13px;
  color: var(--muted);
}

/* Silicon fluency */
.idea {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: center;
  padding: clamp(32px, 5vw, 64px);
  border-radius: 32px;
  background: var(--royal);
  color: #fff;
}

.idea .eyebrow {
  color: var(--sky);
}

.idea .eyebrow::before {
  background: var(--sky);
}

.idea h2 {
  margin-top: 14px;
  font-family: var(--serif);
  font-size: clamp(48px, 7vw, 92px);
  line-height: 0.95;
}

.idea blockquote {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(24px, 2.6vw, 34px);
  line-height: 1.2;
}

.idea .src {
  margin-top: 20px;
  font-size: 14px;
  color: var(--sky-2);
}

.idea .btn {
  margin-top: 28px;
}

/* Book */
.book {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
  align-items: center;
}

.book-stage {
  display: grid;
  place-items: center;
  padding: 56px 24px;
  border-radius: 32px;
  background: radial-gradient(circle at 50% 40%, var(--sky-2), var(--surface-2));
}

.book-cover {
  display: block;
  width: min(300px, 70%);
  height: auto;
  border-radius: 4px 10px 10px 4px;
  box-shadow: -10px 0 0 -4px #0a1128, 0 40px 60px -20px rgba(11, 21, 48, 0.55);
  transform: perspective(900px) rotateY(-14deg);
}

.book-flag {
  display: inline-flex;
  margin-top: 18px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--gold);
  color: var(--ink);
  font-size: 13px;
  font-weight: 600;
}

.book-copy .lead {
  margin-top: 20px;
}

.endorse {
  margin-top: 28px;
  padding: 24px;
  border-left: 3px solid var(--royal);
  background: var(--surface);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.endorse p {
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1.3;
}

.endorse cite {
  display: block;
  margin-top: 12px;
  font-style: normal;
  font-size: 13px;
  color: var(--muted);
}

.book-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

/* Testimonials */
.quotes {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(300px, 1fr);
  gap: 16px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 8px;
}

.quote {
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding: 28px;
}

.quote p {
  font-size: 16px;
  color: var(--ink-2);
}

.quote .who {
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
}

.quote .avatar {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--sky);
  font-family: var(--serif);
  font-size: 18px;
}

.quote .who small {
  display: block;
  color: var(--muted);
}

.quote .placeholder-tag {
  align-self: flex-start;
}

.quote.is-placeholder {
  background: transparent;
  box-shadow: none;
  border: 1.5px dashed var(--line);
  color: var(--muted);
}

/* Insights */
.insights {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.insight {
  display: flex;
  flex-direction: column;
  padding: 28px;
  min-height: 260px;
  text-decoration: none;
  transition: transform 0.25s ease;
}

.insight:hover {
  transform: translateY(-4px);
}

.insight .src {
  font-size: 13px;
  color: var(--royal);
  font-weight: 500;
}

.insight h3 {
  margin-top: 14px;
  font-family: var(--serif);
  font-size: 30px;
}

.insight p {
  margin-top: 12px;
  font-size: 15px;
  color: var(--ink-2);
}

.insight .more {
  margin-top: auto;
  padding-top: 20px;
  font-size: 14px;
  font-weight: 500;
}

/* Formats */
.formats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.format {
  padding: 28px;
}

.format.dark {
  background: var(--ink);
  color: #fff;
}

.format.dark p {
  color: #c9d0e0;
}

.format .len {
  font-size: 13px;
  color: var(--muted);
}

.format.dark .len {
  color: var(--sky);
}

.format h3 {
  margin-top: 10px;
  font-family: var(--serif);
  font-size: 32px;
}

.format p {
  margin-top: 12px;
  font-size: 15px;
  color: var(--ink-2);
}

/* Contact */
.contact {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 56px;
  padding: clamp(28px, 5vw, 64px);
  border-radius: 32px;
  background: var(--surface-2);
}

.contact-side .lead {
  margin-top: 18px;
}

.contact-side .socials {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px 20px;
}

.field {
  display: grid;
  gap: 6px;
}

.field.full {
  grid-column: 1 / -1;
}

.field label {
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-2);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 12px 0;
  border: 0;
  border-bottom: 1px solid #b9c1d3;
  background: transparent;
  font: 400 16px var(--sans);
  color: var(--ink);
  border-radius: 0;
  appearance: none;
}

.field select {
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%230b1530' stroke-width='1.5'/%3E%3C/svg%3E") no-repeat right 4px center;
}

.field textarea {
  min-height: 96px;
  resize: vertical;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--royal);
}

.form-foot {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 8px;
}

.form-foot small {
  color: var(--muted);
}

.hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-error {
  grid-column: 1 / -1;
  margin: 0;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: #fde8e6;
  color: #a12a1f;
  font-size: 14px;
}

.field.invalid input,
.field.invalid textarea {
  border-color: #c0392b;
}

.form button[disabled] {
  opacity: 0.6;
  cursor: wait;
}

.form-success {
  grid-column: 1 / -1;
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  background: var(--surface);
  font-size: 15px;
}