.content-sections {
  position: relative;
  max-width: 1040px;
  margin: 72px auto 0;
  text-align: left;
}

.text-fallback {
  max-width: 1040px;
  margin: 34px auto 0;
}

.text-fallback__toggle {
  display: flex;
  width: fit-content;
  margin: 0 auto;
  padding: 10px 4px;
  gap: 10px;
  align-items: center;
  color: #b9cde5;
  font-size: 0.9rem;
  font-weight: 750;
  line-height: 1.45;
  text-align: center;
  text-decoration: underline;
  text-decoration-color: rgba(45, 231, 240, 0.42);
  text-underline-offset: 4px;
  cursor: pointer;
  list-style: none;
  transition: color 180ms ease;
}

.text-fallback__toggle::-webkit-details-marker { display: none; }
.text-fallback__toggle:hover { color: #79f7ff; }
.text-fallback__toggle:focus-visible { outline: 3px solid #79f7ff; outline-offset: 5px; border-radius: 6px; }

.text-fallback__icon {
  width: 9px;
  height: 9px;
  flex: 0 0 auto;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: translateY(-2px) rotate(45deg);
  transition: transform 180ms ease;
}

.text-fallback[open] .text-fallback__icon { transform: translateY(2px) rotate(225deg); }
.text-fallback .content-sections { margin-top: 26px; }

.content-sections::before {
  content: "";
  position: absolute;
  top: -42px;
  bottom: 0;
  left: 50%;
  z-index: -1;
  width: 70vw;
  max-width: 1050px;
  background: radial-gradient(ellipse at top, rgba(26, 139, 228, 0.1), transparent 64%);
  transform: translateX(-50%);
  pointer-events: none;
}

.content-section {
  position: relative;
  margin-top: 24px;
  padding: clamp(28px, 5vw, 52px);
  overflow: hidden;
  border: 1px solid rgba(101, 174, 255, 0.2);
  border-radius: 24px;
  background: linear-gradient(145deg, rgba(8, 27, 54, 0.91), rgba(3, 13, 30, 0.89));
  box-shadow: 0 26px 80px rgba(0, 0, 0, 0.18);
}

.content-section::after {
  content: attr(data-index);
  position: absolute;
  top: 12px;
  right: 22px;
  color: rgba(84, 226, 241, 0.08);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(4rem, 11vw, 8rem);
  font-style: italic;
  line-height: 1;
  pointer-events: none;
}

.content-section h2 {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0;
  color: #f8fcff;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2rem, 4.8vw, 3.75rem);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1.04;
  text-wrap: balance;
}

.content-section p {
  position: relative;
  z-index: 1;
  max-width: 870px;
  margin: 18px 0 0;
  color: #b5c8dd;
  font-size: clamp(0.96rem, 1.6vw, 1.06rem);
  line-height: 1.72;
}

.content-section p strong,
.content-section li strong {
  color: #f6fcff;
  font-weight: 850;
}

.content-lead {
  padding: 20px 22px;
  border-left: 3px solid #5af0f3;
  border-radius: 0 14px 14px 0;
  color: #e4f4ff !important;
  background: rgba(13, 65, 88, 0.42);
  font-size: clamp(1.03rem, 2vw, 1.18rem) !important;
}

.content-list {
  position: relative;
  z-index: 1;
  display: grid;
  margin: 26px 0 0;
  padding: 0;
  gap: 10px;
  list-style: none;
}

.content-list li {
  position: relative;
  padding: 15px 18px 15px 48px;
  border: 1px solid rgba(103, 181, 235, 0.16);
  border-radius: 13px;
  color: #b9cce1;
  background: rgba(3, 18, 38, 0.58);
  font-size: 0.94rem;
  line-height: 1.58;
}

.content-list li::before {
  content: "✓";
  position: absolute;
  top: 14px;
  left: 17px;
  display: grid;
  width: 22px;
  height: 22px;
  place-items: center;
  border: 1px solid rgba(83, 231, 239, 0.48);
  border-radius: 50%;
  color: #62eef2;
  font-size: 0.72rem;
  font-weight: 900;
}

.content-section--economics {
  border-color: rgba(82, 231, 238, 0.32);
  background:
    radial-gradient(circle at 86% 13%, rgba(38, 222, 232, 0.11), transparent 30%),
    linear-gradient(145deg, rgba(8, 37, 58, 0.96), rgba(3, 13, 30, 0.92));
}

.economics-example {
  position: relative;
  z-index: 1;
  display: grid;
  margin: 30px 0 0;
  gap: 12px;
  grid-template-columns: repeat(3, 1fr);
}

.economics-number {
  padding: 22px;
  border: 1px solid rgba(92, 213, 235, 0.23);
  border-radius: 17px;
  background: rgba(2, 15, 33, 0.68);
}
.economics-number span { display: block; color: #8098b5; font-size: 0.7rem; font-weight: 850; letter-spacing: 0.12em; text-transform: uppercase; }
.economics-number strong { display: block; margin-top: 7px; color: #fff; font-size: clamp(1.55rem, 3.4vw, 2.35rem); letter-spacing: -0.05em; }
.economics-number--accent strong { color: #69f1f4; }

.profit-split {
  position: relative;
  z-index: 1;
  display: grid;
  margin: 16px 0 0;
  gap: 10px;
  grid-template-columns: 1fr 1fr;
}
.profit-split li { min-height: 100%; }

.content-emphasis {
  padding: 21px 23px;
  border: 1px solid rgba(87, 230, 238, 0.3);
  border-radius: 15px;
  color: #e7faff !important;
  background: rgba(10, 58, 77, 0.48);
}

.content-section--fit .content-list { grid-template-columns: 1fr 1fr; }

.content-section--not-fit {
  border-color: rgba(255, 154, 121, 0.22);
  background:
    radial-gradient(circle at 90% 10%, rgba(255, 113, 83, 0.08), transparent 32%),
    linear-gradient(145deg, rgba(37, 23, 37, 0.94), rgba(5, 13, 29, 0.92));
}
.content-section--not-fit .content-list li::before {
  content: "×";
  border-color: rgba(255, 151, 122, 0.45);
  color: #ffad91;
}

.content-section--experience {
  border-color: rgba(91, 176, 255, 0.29);
  background:
    radial-gradient(circle at 14% 18%, rgba(42, 114, 255, 0.12), transparent 34%),
    linear-gradient(145deg, rgba(7, 25, 55, 0.97), rgba(3, 13, 30, 0.92));
}
.content-section--experience .content-list {
  grid-template-columns: 1fr 1fr;
}
.content-section--experience .content-list li {
  padding: 22px;
  color: #c1d5e9;
}
.content-section--experience .content-list li::before { display: none; }
.content-section--experience .content-list strong { display: block; margin-bottom: 3px; color: #6ef2f5; font-size: 1.2rem; }

.content-section--next {
  padding: clamp(32px, 6vw, 64px);
  text-align: center;
  border-color: rgba(109, 242, 247, 0.36);
  background:
    radial-gradient(circle at 50% 0%, rgba(44, 223, 234, 0.16), transparent 38%),
    linear-gradient(145deg, rgba(7, 35, 57, 0.97), rgba(3, 13, 30, 0.94));
}
.content-section--next h2,
.content-section--next p { margin-right: auto; margin-left: auto; }
.content-section--next .content-list { max-width: 720px; margin-right: auto; margin-left: auto; text-align: left; }

.content-cta {
  display: inline-flex;
  min-height: 70px;
  margin-top: 30px;
  padding: 15px 27px;
  align-items: center;
  justify-content: center;
  border: 1px solid #b9feff;
  border-radius: 18px;
  color: #00151c;
  background: linear-gradient(180deg, #77fbfb, #1bd7e6);
  box-shadow: 0 0 40px rgba(45, 231, 240, 0.3), inset 0 2px 0 rgba(255, 255, 255, 0.65);
  font-size: clamp(0.92rem, 2vw, 1.08rem);
  font-weight: 900;
  letter-spacing: 0.01em;
  text-align: center;
  text-decoration: none;
  transition: transform 180ms ease, box-shadow 180ms ease;
}
.content-cta:hover { transform: translateY(-3px); box-shadow: 0 0 52px rgba(45, 231, 240, 0.45); }
.content-cta:focus-visible { outline: 3px solid #fff; outline-offset: 5px; }

@media (max-width: 760px) {
  .content-sections { margin-top: 48px; }
  .economics-example { grid-template-columns: 1fr; }
  .profit-split,
  .content-section--fit .content-list,
  .content-section--experience .content-list { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  .content-section { padding: 25px 17px; border-radius: 18px; }
  .content-section::after { right: 10px; font-size: 4.5rem; }
  .content-list li { padding-right: 13px; padding-left: 43px; }
  .content-list li::before { left: 13px; }
  .content-lead, .content-emphasis { padding: 17px; }
  .content-cta { width: 100%; padding-right: 13px; padding-left: 13px; }
  .text-fallback { margin-top: 26px; }
  .text-fallback__toggle { max-width: 320px; font-size: 0.84rem; }
}