:root {
  --rl-paper: #fbf8f1;
  --rl-paper-strong: #f4efe3;
  --rl-surface: rgba(255, 255, 255, 0.82);
  --rl-surface-strong: rgba(255, 255, 255, 0.94);
  --rl-ink: #193028;
  --rl-muted: #5f6f69;
  --rl-accent: #275846;
  --rl-accent-soft: #d6c08b;
  --rl-border: rgba(39, 88, 70, 0.15);
  --rl-shadow: 0 28px 70px rgba(21, 43, 36, 0.08);
  --rl-title-font: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
  --rl-ui-font: "Avenir Next", "Segoe UI", "PingFang SC", "Hiragino Sans GB", sans-serif;
}

body .reading-alt-main {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at top left, rgba(214, 192, 139, 0.28), transparent 32%),
    radial-gradient(circle at top right, rgba(39, 88, 70, 0.12), transparent 26%),
    linear-gradient(180deg, #f7f2e7 0%, #f9f6ef 18%, #fbf8f1 52%, #f4efe5 100%);
}

body .reading-alt-main::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(25, 48, 40, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(25, 48, 40, 0.03) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.65), transparent 88%);
  pointer-events: none;
}

body .iseb-reading-list {
  position: relative;
  z-index: 1;
  width: min(1380px, calc(100% - 56px));
  margin: 0 auto;
  max-width: none;
  padding: 42px 0 88px;
}

body .rl-shell {
  overflow: hidden;
  border: 1px solid rgba(39, 88, 70, 0.08);
  border-radius: 32px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(252, 250, 244, 0.96) 100%);
  box-shadow: var(--rl-shadow);
  backdrop-filter: blur(14px);
}

body .rl-header {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 72px 62px 56px;
  color: var(--rl-ink);
  text-align: center;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.94) 0%, rgba(248, 242, 228, 0.96) 48%, rgba(239, 232, 216, 0.98) 100%);
}

body .rl-header::before {
  content: "";
  position: absolute;
  inset: auto 62px 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(39, 88, 70, 0.24), transparent);
}

body .rl-header::after {
  content: "";
  position: absolute;
  width: 220px;
  height: 220px;
  right: -54px;
  top: -42px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(39, 88, 70, 0.12), rgba(39, 88, 70, 0));
  pointer-events: none;
}

body .rl-eyebrow {
  margin-bottom: 18px;
  color: var(--rl-accent);
  font-family: var(--rl-ui-font);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.28em;
  text-transform: uppercase;
}

body .rl-title {
  margin: 0;
  max-width: 12ch;
  color: var(--rl-ink);
  font-family: var(--rl-title-font);
  font-size: clamp(42px, 5vw, 76px);
  font-weight: 700;
  line-height: 0.98;
  letter-spacing: -0.035em;
}

body .rl-subtitle {
  margin-top: 20px;
  max-width: 640px;
  color: var(--rl-muted);
  font-family: var(--rl-ui-font);
  font-size: clamp(17px, 1.6vw, 22px);
  letter-spacing: 0.02em;
}

body .rl-intro,
body .contact-cta,
body .rl-footer {
  position: relative;
  padding-inline: 62px;
}

body .rl-intro {
  padding-top: 36px;
  padding-bottom: 30px;
  text-align: center;
}

body .rl-intro-inner {
  max-width: 860px;
  margin: 0 auto;
}

body .rl-intro h2 {
  margin: 0 0 14px;
  color: var(--rl-ink);
  font-family: var(--rl-title-font);
  font-size: clamp(26px, 2.1vw, 36px);
  font-weight: 700;
  line-height: 1.1;
}

body .rl-intro p,
body .contact-cta p,
body .rl-footer {
  color: var(--rl-muted);
  font-family: var(--rl-ui-font);
  font-size: 16px;
  line-height: 1.92;
}

body .contact-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 26px;
  padding-top: 20px;
  padding-bottom: 30px;
}

body .contact-cta.top {
  margin-bottom: 10px;
}

body .contact-cta.bottom {
  margin-top: 28px;
}

body .contact-cta p {
  margin: 0;
  max-width: 780px;
}

body .contact-cta.top,
body .contact-cta.bottom {
  justify-content: center;
}

body .contact-cta a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 172px;
  padding: 14px 24px;
  border: 1px solid rgba(39, 88, 70, 0.18);
  border-radius: 999px;
  background: linear-gradient(180deg, #2f6a54 0%, #234d3d 100%);
  color: #fff;
  font-family: var(--rl-ui-font);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  box-shadow: 0 16px 30px rgba(35, 77, 61, 0.16);
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

body .contact-cta a:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 34px rgba(35, 77, 61, 0.2);
}

body #readingListUnits {
  display: grid;
  gap: 18px;
  padding: 20px 32px 0;
}

body .unit-row {
  display: grid;
  grid-template-columns: 176px minmax(0, 1fr);
  align-items: stretch;
  border: 1px solid var(--rl-border);
  border-radius: 26px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.8), rgba(248, 244, 235, 0.92));
  box-shadow: 0 10px 24px rgba(35, 57, 48, 0.05);
  overflow: hidden;
}

body .unit-label {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-start;
  padding: 28px 24px;
  color: var(--rl-ink);
  background:
    linear-gradient(180deg, rgba(39, 88, 70, 0.07) 0%, rgba(39, 88, 70, 0.02) 100%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.88), rgba(244, 239, 227, 0.95));
  border-right: 1px solid var(--rl-border);
  font-family: var(--rl-title-font);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

body .unit-label span {
  margin-top: 8px;
  color: var(--rl-muted);
  font-family: var(--rl-ui-font);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

body .books {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  padding: 22px;
}

body .book {
  min-height: 100%;
  padding: 22px;
  border: 1px solid rgba(39, 88, 70, 0.12);
  border-radius: 22px;
  background:
    linear-gradient(180deg, var(--rl-surface-strong) 0%, var(--rl-surface) 100%);
  box-shadow: 0 12px 26px rgba(30, 56, 44, 0.06);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

body .book:hover {
  transform: translateY(-3px);
  border-color: rgba(39, 88, 70, 0.22);
  box-shadow: 0 18px 34px rgba(30, 56, 44, 0.1);
}

body .book-title {
  margin: 0 0 8px;
  color: var(--rl-ink);
  font-family: var(--rl-title-font);
  font-size: clamp(24px, 1.5vw, 28px);
  line-height: 1.1;
  font-weight: 700;
  text-wrap: balance;
}

body .author {
  margin-bottom: 12px;
  color: var(--rl-accent);
  font-family: var(--rl-ui-font);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

body .desc-en,
body .desc {
  margin: 0;
  color: var(--rl-muted);
  font-family: var(--rl-ui-font);
  font-size: 14px;
  line-height: 1.78;
}

body .desc-en + .cn-title,
body .cn-title + .desc,
body .desc + .lexile {
  margin-top: 14px;
}

body .cn-title {
  color: var(--rl-ink);
  font-family: var(--rl-ui-font);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
}

body .lexile {
  display: inline-flex;
  align-items: center;
  padding: 7px 12px;
  border: 1px solid rgba(39, 88, 70, 0.12);
  border-radius: 999px;
  background: rgba(39, 88, 70, 0.05);
  color: var(--rl-accent);
  font-family: var(--rl-ui-font);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
}

body .rl-footer {
  padding-top: 38px;
  padding-bottom: 46px;
  border-top: 1px solid rgba(39, 88, 70, 0.1);
}

.reading-alt-main .site-header {
  margin-bottom: 0;
}

.book.has-cover {
  display: grid;
  grid-template-columns: 118px minmax(0, 1fr);
  width: 100%;
  gap: 18px;
  align-items: start;
}

.book-cover-wrap {
  width: 118px;
  min-width: 118px;
}

.book-cover {
  width: 118px;
  aspect-ratio: 0.68;
  object-fit: cover;
  border: 1px solid rgba(39, 88, 70, 0.12);
  border-radius: 14px;
  background: linear-gradient(180deg, #f2ecde 0%, #ddd3bb 100%);
  box-shadow: 0 8px 18px rgba(25, 48, 40, 0.08);
}

.book-cover-placeholder {
  width: 118px;
  aspect-ratio: 0.68;
  display: grid;
  place-items: center;
  padding: 14px;
  border: 1px dashed rgba(39, 88, 70, 0.18);
  border-radius: 14px;
  background: linear-gradient(180deg, #fbf8f1 0%, #eee6d5 100%);
  color: #6c766f;
  font-family: var(--rl-ui-font);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.45;
  text-align: center;
}

.book-meta {
  display: block;
  width: 100%;
  min-width: 0;
}

.book-content {
  display: block;
  width: 100%;
  min-width: 0;
}

@media (max-width: 1320px) {
  body .books {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 1180px) {
  body .iseb-reading-list {
    width: min(100%, calc(100% - 28px));
    padding: 24px 0 54px;
  }

  body .rl-header,
  body .rl-intro,
  body .contact-cta,
  body .rl-footer {
    padding-inline: 26px;
  }

  body .rl-header {
    padding-top: 42px;
    padding-bottom: 34px;
  }

  body .rl-header::before {
    inset-inline: 26px;
  }

  body #readingListUnits {
    padding-inline: 16px;
  }

  body .books {
    padding: 18px;
  }

  body .unit-row {
    grid-template-columns: 1fr;
  }

  body .unit-label {
    padding: 18px 22px 14px;
    border-right: 0;
    border-bottom: 1px solid var(--rl-border);
  }
}

@media (max-width: 860px) {
  body .contact-cta {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 720px) {
  body .rl-title {
    max-width: none;
    font-size: 44px;
  }

  body .rl-subtitle {
    font-size: 15px;
  }

  body .rl-intro p,
  body .contact-cta p,
  body .rl-footer,
  body .desc-en,
  body .desc {
    font-size: 15px;
  }

  body .books {
    grid-template-columns: 1fr;
    padding: 16px;
  }

  body .book {
    padding: 18px;
    border-radius: 18px;
  }

  .book.has-cover {
    grid-template-columns: 92px minmax(0, 1fr);
    width: 100%;
    gap: 14px;
  }

  .book-cover-wrap,
  .book-cover,
  .book-cover-placeholder {
    width: 92px;
  }

  .book-cover-wrap {
    min-width: 92px;
  }
}