.v13-section-intro {
  max-width: 820px;
  margin: 0 auto 42px;
  text-align: center;
}

.v13-section-intro .v9-lead {
  margin-bottom: 0;
}

.v13-curriculum-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 34px 0 28px;
}

.v13-curriculum-summary > div {
  min-height: 132px;
  padding: 24px 18px;
  border: 2px solid #111;
  border-radius: 18px;
  background: #fff;
  color: #111;
  text-align: center;
  box-shadow: 7px 7px 0 #111;
}

.v13-curriculum-summary strong {
  display: block;
  margin-bottom: 7px;
  color: #6f2cff;
  font-size: clamp(32px, 5vw, 54px);
  line-height: 1;
}

.v13-curriculum-summary span {
  font-size: clamp(17px, 2vw, 21px);
  font-weight: 800;
  line-height: 1.45;
}

.v13-curriculum {
  display: grid;
  gap: 14px;
  max-width: 980px;
  margin: 0 auto;
}

.v13-curriculum details {
  overflow: hidden;
  border: 2px solid rgba(255, 255, 255, 0.76);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.09);
  color: #fff;
}

.v13-curriculum summary {
  position: relative;
  display: grid;
  grid-template-columns: 76px 1fr auto;
  align-items: center;
  gap: 16px;
  min-height: 92px;
  padding: 18px 56px 18px 20px;
  cursor: pointer;
  list-style: none;
}

.v13-curriculum summary::-webkit-details-marker {
  display: none;
}

.v13-curriculum summary::after {
  content: "+";
  position: absolute;
  right: 22px;
  top: 50%;
  color: #ffe35a;
  font-size: 30px;
  font-weight: 900;
  transform: translateY(-50%);
}

.v13-curriculum details[open] summary::after {
  content: "−";
}

.v13-curriculum__part {
  display: grid;
  place-items: center;
  width: 68px;
  height: 54px;
  border-radius: 14px;
  background: #ffe35a;
  color: #111;
  font-size: 18px;
  font-weight: 950;
}

.v13-curriculum summary strong {
  font-size: clamp(18px, 2.2vw, 24px);
  line-height: 1.4;
}

.v13-curriculum summary small {
  color: rgba(255, 255, 255, 0.72);
  font-size: 15px;
  font-weight: 800;
}

.v13-curriculum ol {
  margin: 0;
  padding: 8px 28px 28px 62px;
  columns: 2;
  column-gap: 44px;
}

.v13-curriculum li {
  break-inside: avoid;
  margin: 0 0 12px;
  padding-left: 6px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 17px;
  font-weight: 650;
  line-height: 1.55;
}

.v13-start-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 36px;
  counter-reset: start-step;
}

.v13-start-step {
  position: relative;
  min-height: 210px;
  padding: 28px 20px 22px;
  border: 2px solid #111;
  border-radius: 20px;
  background: #fff;
  color: #111;
  box-shadow: 7px 7px 0 #111;
  counter-increment: start-step;
}

.v13-start-step::before {
  content: counter(start-step, decimal-leading-zero);
  display: inline-grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin-bottom: 22px;
  border-radius: 50%;
  background: #6f2cff;
  color: #fff;
  font-size: 16px;
  font-weight: 950;
}

.v13-start-step h3 {
  margin: 0 0 10px;
  font-size: clamp(19px, 2.2vw, 24px);
  line-height: 1.3;
}

.v13-start-step p {
  margin: 0;
  color: #444;
  font-size: 16px;
  line-height: 1.65;
}

.v13-start-note {
  max-width: 820px;
  margin: 30px auto 0;
  padding: 18px 22px;
  border-radius: 16px;
  background: #111;
  color: #fff;
  text-align: center;
  font-size: clamp(16px, 2vw, 20px);
  font-weight: 800;
  line-height: 1.55;
}

.v13-case {
  max-width: 1050px;
  margin: 0 auto;
}

.v13-case__input {
  max-width: 820px;
  margin: 0 auto 34px;
  padding: 28px;
  border: 2px solid #111;
  border-radius: 20px;
  background: #fff;
  color: #111;
  box-shadow: 8px 8px 0 #111;
}

.v13-case__input span {
  display: inline-block;
  margin-bottom: 12px;
  padding: 7px 12px;
  border-radius: 999px;
  background: #111;
  color: #ffe35a;
  font-size: 14px;
  font-weight: 900;
}

.v13-case__input p {
  margin: 0;
  font-size: clamp(18px, 2.3vw, 25px);
  font-weight: 800;
  line-height: 1.65;
}

.v13-case-flow {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.v13-case-card {
  overflow: hidden;
  border: 2px solid rgba(255, 255, 255, 0.62);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.v13-case-card figure {
  aspect-ratio: 4 / 3;
  margin: 0;
  overflow: hidden;
  background: #fff;
}

.v13-case-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
}

.v13-case-card__copy {
  padding: 22px;
}

.v13-case-card__copy b {
  display: block;
  margin-bottom: 8px;
  color: #ffe35a;
  font-size: 14px;
  letter-spacing: 0.04em;
}

.v13-case-card__copy h3 {
  margin: 0 0 10px;
  font-size: clamp(20px, 2.3vw, 26px);
  line-height: 1.35;
}

.v13-case-card__copy p {
  margin: 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 16px;
  line-height: 1.65;
}

.v13-case__result {
  margin-top: 28px;
  padding: 24px;
  border-radius: 20px;
  background: #ffe35a;
  color: #111;
  text-align: center;
  font-size: clamp(18px, 2.4vw, 25px);
  font-weight: 900;
  line-height: 1.55;
}

.v13-proof-slice {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  max-width: 1040px;
  margin: 34px auto 0;
}

.v13-proof-slice--three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.v13-proof-slice .v12-review-card {
  height: 100%;
}

.v13-proof-note {
  max-width: 980px;
  margin: 22px auto 0;
  color: inherit;
  font-size: 14px;
  font-weight: 650;
  line-height: 1.65;
  text-align: center;
  opacity: 0.78;
}

.v13-value-compare {
  max-width: 1040px;
  margin: 36px auto 0;
  overflow: hidden;
  border: 2px solid #111;
  border-radius: 22px;
  background: #fff;
  color: #111;
  box-shadow: 9px 9px 0 #111;
}

.v13-value-compare__head,
.v13-value-compare__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.v13-value-compare__head {
  background: #111;
  color: #fff;
}

.v13-value-compare__head strong,
.v13-value-compare__row > div {
  padding: 20px 24px;
}

.v13-value-compare__head strong:last-child {
  color: #ffe35a;
}

.v13-value-compare__row {
  border-top: 1px solid #ddd;
}

.v13-value-compare__row > div {
  font-size: clamp(16px, 2vw, 19px);
  font-weight: 750;
  line-height: 1.5;
}

.v13-value-compare__row > div:first-child {
  background: #f2f2f2;
  color: #555;
}

.v13-value-compare__row > div:last-child {
  color: #4d14c5;
}

.v13-value-compare__foot {
  padding: 22px 24px;
  border-top: 2px solid #111;
  background: #ffe35a;
  text-align: center;
  font-size: 16px;
  font-weight: 850;
  line-height: 1.6;
}

.v13-authority {
  display: grid;
  grid-template-columns: 0.72fr 1.28fr;
  gap: 30px;
  align-items: stretch;
  max-width: 1040px;
  margin: 36px auto 0;
}

.v13-authority__stamp,
.v13-authority__copy {
  border: 2px solid #111;
  border-radius: 22px;
  background: #fff;
  color: #111;
  box-shadow: 8px 8px 0 #111;
}

.v13-authority__stamp {
  display: grid;
  place-items: center;
  min-height: 280px;
  padding: 26px;
  background: #111;
  color: #fff;
  text-align: center;
}

.v13-authority__stamp strong {
  display: block;
  color: #ffe35a;
  font-size: clamp(58px, 8vw, 94px);
  line-height: 0.95;
}

.v13-authority__stamp span {
  display: block;
  margin-top: 12px;
  font-size: clamp(17px, 2vw, 22px);
  font-weight: 850;
  line-height: 1.45;
}

.v13-authority__copy {
  padding: clamp(26px, 5vw, 48px);
}

.v13-authority__copy h3 {
  margin: 0 0 18px;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.35;
}

.v13-authority__copy p {
  margin: 0 0 14px;
  color: #333;
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.7;
}

.v13-authority__copy p:last-child {
  margin-bottom: 0;
}

.v13-urgency {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 34px;
}

.v13-urgency article {
  padding: 28px 22px;
  border: 2px solid rgba(255, 255, 255, 0.7);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.08);
}

.v13-urgency strong {
  display: block;
  margin-bottom: 10px;
  color: #ffe35a;
  font-size: clamp(20px, 2.4vw, 27px);
  line-height: 1.35;
}

.v13-urgency p {
  margin: 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 16px;
  line-height: 1.65;
}

.v13-availability {
  max-width: 900px;
  margin: 30px auto 0;
  padding: 24px;
  border: 2px solid #ffe35a;
  border-radius: 18px;
  color: #fff;
  text-align: center;
}

.v13-availability strong {
  color: #ffe35a;
}

.v13-availability p {
  margin: 0;
  font-size: clamp(16px, 2vw, 20px);
  font-weight: 750;
  line-height: 1.65;
}

/* Responsive reconstruction of the former desktop screenshot.
   The proof stays readable instead of shrinking a browser capture on mobile. */
.v13-decision-demo,
.v13-decision-demo * {
  box-sizing: border-box;
}

.v13-decision-demo {
  display: grid;
  grid-template-columns: minmax(0, 2.15fr) minmax(250px, 0.85fr);
  width: 100%;
  overflow: hidden;
  border: 1px solid rgba(17, 17, 17, 0.14);
  border-radius: 18px;
  background: #f5f5f5;
  color: #111;
}

.v13-decision-demo__logic {
  min-width: 0;
  padding: clamp(30px, 5vw, 56px) clamp(22px, 5vw, 52px);
  background: #a8e5d7;
}

.v13-decision-demo__logic h4 {
  margin: 0;
  color: #0d1110;
  font-size: clamp(25px, 3.3vw, 42px);
  font-weight: 950;
  line-height: 1.22;
  letter-spacing: -0.055em;
  text-align: center;
  word-break: keep-all;
}

.v13-decision-demo__cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: clamp(26px, 4vw, 42px) 0;
}

.v13-decision-demo__cards article {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  min-height: 190px;
  padding: 24px 16px;
  border-top: 5px solid #0b9e7a;
  border-radius: 20px;
  background: #fff;
  text-align: center;
}

.v13-decision-demo__cards span {
  display: block;
  margin-bottom: 18px;
  color: #08785d;
  font-size: 11px;
  font-weight: 950;
  line-height: 1.2;
  letter-spacing: 0.1em;
}

.v13-decision-demo__cards strong {
  display: block;
  color: #111;
  font-size: clamp(16px, 2vw, 22px);
  font-weight: 900;
  line-height: 1.46;
  letter-spacing: -0.04em;
  word-break: keep-all;
}

.v13-decision-demo__logic > p {
  margin: 0;
  padding: clamp(22px, 3vw, 32px);
  border: 1px solid rgba(17, 17, 17, 0.1);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.68);
  color: #3e4946;
  font-size: clamp(15px, 2vw, 19px);
  font-weight: 720;
  line-height: 1.65;
  text-align: center;
  word-break: keep-all;
}

.v13-decision-demo__logic > p strong {
  display: block;
  margin-top: 12px;
  color: #111;
  font-weight: 950;
}

.v13-decision-demo__offer {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: clamp(24px, 3vw, 34px) clamp(18px, 2.5vw, 28px);
  border-left: 1px solid #ddd;
  background: #fafafa;
  color: #111;
  text-align: left;
}

.v13-decision-demo__offer > img {
  display: block;
  width: min(54%, 140px);
  height: 170px;
  margin: 0 auto 20px;
  object-fit: contain;
}

.v13-decision-demo__offer small {
  margin-bottom: 10px;
  color: #c92525;
  font-size: 11px;
  font-style: normal;
  font-weight: 900;
}

.v13-decision-demo__offer h4 {
  margin: 0 0 12px;
  color: #111;
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 950;
  line-height: 1.25;
  letter-spacing: -0.04em;
}

.v13-decision-demo__offer p {
  margin: 0 0 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid #d8d8d8;
  color: #666;
  font-size: 13px;
  line-height: 1.55;
}

.v13-decision-demo__offer b {
  display: block;
  padding-bottom: 16px;
  border-bottom: 1px solid #d8d8d8;
  color: #333;
  font-size: 13px;
  line-height: 1.55;
}

.v13-decision-demo__price {
  display: block;
  margin: 18px 0;
  color: #c51616;
  font-size: clamp(27px, 3vw, 36px);
  font-weight: 950;
  line-height: 1;
}

.v13-decision-demo__button {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 14px 12px;
  background: #111;
  color: #fff;
  font-size: 13px;
  font-weight: 900;
  line-height: 1.35;
  text-align: center;
}

.v13-decision-demo__offer em {
  display: block;
  margin-top: 12px;
  color: #888;
  font-size: 10px;
  font-style: normal;
  line-height: 1.5;
  text-align: center;
}

@media (max-width: 820px) {
  .v13-curriculum-summary,
  .v13-case-flow,
  .v13-proof-slice--three,
  .v13-authority,
  .v13-urgency {
    grid-template-columns: 1fr;
  }

  .v13-start-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .v13-curriculum ol {
    columns: 1;
  }

  .v13-decision-demo {
    grid-template-columns: 1fr;
  }

  .v13-decision-demo__offer {
    border-top: 1px solid #ddd;
    border-left: 0;
  }
}

@media (max-width: 560px) {
  .v13-section-intro {
    margin-bottom: 28px;
  }

  .v13-curriculum-summary,
  .v13-start-grid,
  .v13-proof-slice {
    grid-template-columns: 1fr;
  }

  .v13-curriculum summary {
    grid-template-columns: 58px 1fr;
    gap: 12px;
    min-height: 82px;
    padding: 15px 48px 15px 14px;
  }

  .v13-curriculum__part {
    width: 54px;
    height: 48px;
    font-size: 15px;
  }

  .v13-curriculum summary small {
    display: none;
  }

  .v13-curriculum ol {
    padding: 6px 22px 24px 46px;
  }

  .v13-curriculum li {
    font-size: 16px;
  }

  .v13-start-step {
    min-height: 0;
  }

  .v13-case__input,
  .v13-authority__copy {
    padding: 22px;
  }

  .v13-value-compare {
    overflow: visible;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
  }

  .v13-value-compare__head {
    display: none;
  }

  .v13-value-compare__row {
    display: block;
    overflow: hidden;
    padding: 0;
    border: 1px solid rgba(29, 20, 2, 0.2);
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.8);
    box-shadow: 5px 5px 0 rgba(17, 17, 17, 0.88);
  }

  .v13-value-compare__row + .v13-value-compare__row {
    margin-top: 18px;
  }

  .v13-value-compare__row > div {
    display: block;
    min-width: 0;
    padding: 20px 18px;
    font-size: 17px;
    line-height: 1.65;
  }

  .v13-value-compare__row > div::before {
    display: block;
    margin-bottom: 8px;
    font-size: 12px;
    font-weight: 900;
    line-height: 1.3;
    letter-spacing: 0.07em;
  }

  .v13-value-compare__row > div:first-child::before {
    content: "지금처럼 따로 진행할 때";
    color: #765d28;
  }

  .v13-value-compare__row > div:last-child {
    border-left: 0;
    border-top: 1px solid rgba(29, 20, 2, 0.2);
    background: #1d1730;
    color: #fff;
  }

  .v13-value-compare__row > div:last-child::before {
    content: "Psychology AI로 연결할 때";
    color: #ffe35a;
  }

  .v13-value-compare__foot {
    margin-top: 18px;
    border: 2px solid #111;
    border-radius: 18px;
    box-shadow: 5px 5px 0 #111;
  }

  .v13-decision-demo {
    border-radius: 16px;
  }

  .v13-decision-demo__logic {
    padding: 30px 16px 24px;
  }

  .v13-decision-demo__logic h4 {
    font-size: clamp(25px, 7.4vw, 31px);
    line-height: 1.3;
  }

  .v13-decision-demo__cards {
    grid-template-columns: 1fr;
    gap: 12px;
    margin: 26px 0;
  }

  .v13-decision-demo__cards article {
    min-height: 0;
    padding: 19px 16px;
    border-top: 0;
    border-left: 5px solid #0b9e7a;
    border-radius: 16px;
  }

  .v13-decision-demo__cards span {
    margin-bottom: 8px;
    font-size: 11px;
  }

  .v13-decision-demo__cards strong {
    font-size: 18px;
    line-height: 1.5;
  }

  .v13-decision-demo__logic > p {
    padding: 22px 17px;
    border-radius: 18px;
    font-size: 16px;
    line-height: 1.7;
  }

  .v13-decision-demo__offer {
    padding: 26px 20px;
  }

  .v13-decision-demo__offer > img {
    width: min(46%, 132px);
    height: 150px;
  }

  .v13-decision-demo__offer h4 {
    font-size: 24px;
  }

  .v13-decision-demo__offer p,
  .v13-decision-demo__offer b {
    font-size: 14px;
  }

  .v13-decision-demo__price {
    font-size: 32px;
  }
}

.v13-case-card__decision-preview {
  height: auto !important;
  aspect-ratio: auto !important;
  overflow: visible !important;
}

/* The red applications scene inherits white section text.
   Its pale cards need an explicit dark heading for readable contrast. */
.v9-section--red .v9-card h3 {
  color: #241329;
  text-shadow: none;
}

@media (min-width: 821px) {
  .v9-screen-card > .v13-decision-demo,
  .v13-case-card__decision-preview .v13-decision-demo {
    grid-template-columns: 1fr;
  }

  .v9-screen-card > .v13-decision-demo .v13-decision-demo__offer,
  .v13-case-card__decision-preview .v13-decision-demo__offer,
  .v9-screen-card > .v13-decision-demo .v13-decision-demo__logic > p,
  .v13-case-card__decision-preview .v13-decision-demo__logic > p {
    display: none;
  }

  .v9-screen-card > .v13-decision-demo .v13-decision-demo__logic,
  .v13-case-card__decision-preview .v13-decision-demo__logic {
    padding: 20px 16px;
  }

  .v9-screen-card > .v13-decision-demo .v13-decision-demo__logic h4,
  .v13-case-card__decision-preview .v13-decision-demo__logic h4 {
    font-size: 22px;
    line-height: 1.35;
  }

  .v9-screen-card > .v13-decision-demo .v13-decision-demo__cards,
  .v13-case-card__decision-preview .v13-decision-demo__cards {
    grid-template-columns: 1fr;
    gap: 8px;
    margin: 16px 0 0;
  }

  .v9-screen-card > .v13-decision-demo .v13-decision-demo__cards article,
  .v13-case-card__decision-preview .v13-decision-demo__cards article {
    padding: 12px 10px;
  }

  .v9-screen-card > .v13-decision-demo .v13-decision-demo__cards span,
  .v13-case-card__decision-preview .v13-decision-demo__cards span {
    margin-bottom: 5px;
    font-size: 9px;
  }

  .v9-screen-card > .v13-decision-demo .v13-decision-demo__cards strong,
  .v13-case-card__decision-preview .v13-decision-demo__cards strong {
    font-size: 15px;
    line-height: 1.45;
  }
}

@media (prefers-reduced-motion: reduce) {
  .v13-curriculum details,
  .v13-start-step,
  .v13-case-card,
  .v13-value-compare,
  .v13-authority__stamp,
  .v13-authority__copy {
    scroll-behavior: auto;
  }
}