.excel-series-page {
  --series-accent: #0f9f8f;
  --series-accent-deep: #087466;
  --series-accent-soft: #e7f8f4;
  --series-gold: #d79a21;
  --series-navy: #0b1324;
}

.excel-level-3-page {
  --series-accent: #118c9f;
  --series-accent-deep: #0a6877;
  --series-accent-soft: #e5f5f8;
}

.excel-series-page .story-kicker,
.excel-series-page .story-section-index {
  color: #fff;
  background: var(--series-accent-deep);
}

.excel-series-page .story-kicker {
  color: var(--series-accent-deep);
  background: transparent;
}

.excel-series-page .story-action.primary,
.excel-series-page .series-download-card.primary {
  color: #fff;
  border-color: var(--series-accent-deep);
  background: var(--series-accent-deep);
}

.excel-series-page .story-action.primary:hover,
.excel-series-page .series-download-card.primary:hover {
  border-color: var(--series-navy);
  background: var(--series-navy);
}

.excel-series-hero .story-hero-card {
  background: linear-gradient(135deg, color-mix(in srgb, var(--series-accent) 14%, #fff), rgba(255,255,255,.96) 48%, rgba(215,154,33,.13));
}

html[data-theme="dark"] .excel-series-hero .story-hero-card {
  background: linear-gradient(135deg, color-mix(in srgb, var(--series-accent) 26%, #101c27), rgba(16,28,39,.97) 50%, rgba(215,154,33,.12));
}

.excel-series-hero .story-hero-copy h1 > span,
.excel-series-hero .story-hero-copy h1 > em {
  display: block;
}

.excel-series-page .story-hero-actions {
  position: relative;
  z-index: 4;
}

.excel-series-hero .story-hero-copy h1 > em {
  margin-top: .08em;
  color: var(--series-accent-deep);
}

html[data-theme="dark"] .excel-series-hero .story-hero-copy h1 > em {
  color: #6de4d4;
}

.excel-series-hero-media {
  position: relative;
  overflow: hidden;
  min-height: 390px;
  border: 1px solid rgba(15,159,143,.24);
  border-radius: 26px;
  background: var(--series-navy);
  box-shadow: 0 28px 70px rgba(11,19,36,.22);
}

.excel-series-hero-media img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 390px;
  object-fit: cover;
}

.series-level-badge {
  position: absolute;
  right: 20px;
  bottom: 20px;
  display: grid;
  width: 112px;
  height: 112px;
  place-items: center;
  border: 1px solid rgba(255,255,255,.32);
  border-radius: 24px;
  color: #fff;
  background: rgba(10,116,102,.9);
  font: 800 2rem/1 Manrope, sans-serif;
  box-shadow: 0 16px 40px rgba(0,0,0,.3);
  backdrop-filter: blur(12px);
}

.series-course-map,
.series-key-grid,
.series-formula-grid,
.series-download-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 24px 0;
}

.series-course-map {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.series-course-step,
.series-key-card,
.series-formula-card,
.series-download-card {
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--line-soft);
  border-radius: 20px;
  color: inherit;
  background: var(--surface);
}

.series-course-step {
  min-height: 172px;
}

.series-course-step > span,
.series-key-card > span,
.series-formula-card > span,
.series-download-card > span {
  display: block;
  margin-bottom: 10px;
  color: var(--series-accent-deep);
  font: 800 .77rem/1.2 Manrope, "Noto Sans Thai", sans-serif;
  letter-spacing: .07em;
  text-transform: uppercase;
}

html[data-theme="dark"] .series-course-step > span,
html[data-theme="dark"] .series-key-card > span,
html[data-theme="dark"] .series-formula-card > span,
html[data-theme="dark"] .series-download-card > span {
  color: #6de4d4;
}

.series-course-step strong,
.series-key-card strong,
.series-formula-card strong,
.series-download-card strong {
  display: block;
  margin-bottom: 8px;
  font-size: 1.03rem;
  line-height: 1.4;
}

.series-course-step p,
.series-key-card p,
.series-formula-card p,
.series-download-card p {
  margin: 0;
  color: var(--text-soft);
  font-size: .9rem;
  line-height: 1.65;
}

.series-formula-card code {
  display: inline-block;
  max-width: 100%;
  margin-bottom: 12px;
  padding: 8px 11px;
  overflow-wrap: anywhere;
  border-radius: 9px;
  color: var(--series-accent-deep);
  background: var(--series-accent-soft);
  font-weight: 800;
}

html[data-theme="dark"] .series-formula-card code {
  color: #8aeadf;
  background: rgba(15,159,143,.18);
}

.series-flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  margin: 24px 0;
}

.series-flow span {
  padding: 10px 13px;
  border: 1px solid color-mix(in srgb, var(--series-accent) 24%, transparent);
  border-radius: 999px;
  color: var(--series-accent-deep);
  background: var(--series-accent-soft);
  font-weight: 750;
}

html[data-theme="dark"] .series-flow span {
  color: #8aeadf;
  background: rgba(15,159,143,.18);
}

.series-flow i {
  color: var(--text-soft);
  font-style: normal;
}

.series-note {
  margin: 22px 0;
  padding: 17px 19px;
  border-left: 4px solid var(--series-gold);
  border-radius: 0 14px 14px 0;
  color: var(--text);
  background: color-mix(in srgb, var(--series-gold) 10%, var(--surface));
  line-height: 1.7;
}

.series-table-wrap {
  margin: 22px 0;
  overflow-x: auto;
  border: 1px solid var(--line-soft);
  border-radius: 18px;
}

.series-table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
  background: var(--surface);
}

.series-table th,
.series-table td {
  padding: 13px 15px;
  border-bottom: 1px solid var(--line-soft);
  text-align: left;
  vertical-align: top;
}

.series-table th {
  color: #fff;
  background: var(--series-navy);
  font-size: .8rem;
  letter-spacing: .04em;
}

.series-table td:first-child {
  color: var(--series-accent-deep);
  font-weight: 800;
}

html[data-theme="dark"] .series-table td:first-child {
  color: #6de4d4;
}

.series-download-card {
  display: flex;
  min-height: 188px;
  flex-direction: column;
  text-decoration: none;
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}

.series-download-card:hover {
  transform: translateY(-3px);
  border-color: var(--series-accent);
  box-shadow: 0 18px 40px rgba(23,50,77,.12);
}

.series-download-card .download-meta {
  margin-top: auto;
  padding-top: 17px;
  font: 800 .73rem/1.2 Manrope, sans-serif;
  letter-spacing: .05em;
}

.series-download-card.primary p,
.series-download-card.primary > span,
.series-download-card.primary .download-meta {
  color: rgba(255,255,255,.86);
}

.series-source-note {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: start;
  margin-top: 18px;
  padding: 15px 17px;
  border: 1px solid var(--line-soft);
  border-radius: 14px;
  color: var(--text-soft);
  background: var(--surface);
  font-size: .88rem;
  line-height: 1.6;
}

.series-source-note b {
  display: grid;
  width: 28px;
  height: 28px;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: var(--series-accent-deep);
}

.excel-series-page .presentation-stage {
  background: var(--series-navy);
}

/* Level 2–3 inherit the Level 1 presentation anatomy and tokens. These are
   content primitives only; they intentionally do not introduce a second deck theme. */
.excel-series-page .series-standard-grid,
.excel-series-page .series-standard-chips,
.excel-series-page .series-standard-route,
.excel-series-page .series-standard-compare,
.excel-series-page .series-standard-formula,
.excel-series-page .series-standard-table {
  min-width: 0;
  color: var(--xl1-ink);
}

.excel-series-page .series-standard-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.excel-series-page .series-standard-grid article,
.excel-series-page .series-standard-chips article,
.excel-series-page .series-standard-route article,
.excel-series-page .series-standard-compare article,
.excel-series-page .series-standard-formula article {
  min-width: 0;
  border: 1px solid var(--xl1-line);
  border-radius: 16px;
  background: var(--xl1-panel);
}

.excel-series-page .series-standard-grid article {
  display: grid;
  grid-template-columns: 42px 1fr;
  align-items: center;
  gap: 12px;
  min-height: 88px;
  padding: 16px;
}

.excel-series-page .series-standard-grid article > b,
.excel-series-page .series-standard-route article > b {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 50%;
  color: #052718;
  background: var(--xl1-accent);
  font: 800 13px/1 Manrope, sans-serif;
}

.excel-series-page .series-standard-grid article > strong,
.excel-series-page .series-standard-chips article > strong,
.excel-series-page .series-standard-route article > strong {
  color: var(--xl1-ink);
  font-size: clamp(15px, 1.15vw, 21px);
  line-height: 1.28;
}

.excel-series-page .series-standard-chips {
  display: flex;
  flex-wrap: wrap;
  align-content: center;
  gap: 12px;
}

.excel-series-page .series-standard-chips article {
  display: grid;
  grid-template-columns: 34px minmax(90px, 1fr);
  align-items: center;
  gap: 10px;
  flex: 1 1 42%;
  padding: 15px;
}

.excel-series-page .series-standard-chips article > b {
  color: var(--xl1-accent);
  font: 800 12px/1 Manrope, sans-serif;
}

.excel-series-page .series-standard-route {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  align-content: center;
}

.excel-series-page .series-standard-route > i { display: none; }

.excel-series-page .series-standard-route article {
  display: grid;
  grid-template-columns: 42px 1fr;
  align-items: center;
  gap: 12px;
  min-height: 92px;
  padding: 17px;
}

.excel-series-page .series-standard-compare {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  align-content: center;
}

.excel-series-page .series-standard-compare article {
  display: grid;
  align-content: start;
  gap: 14px;
  min-height: 210px;
  padding: 24px;
}

.excel-series-page .series-standard-compare article > span {
  color: var(--xl1-accent);
  font-size: clamp(13px, 1vw, 17px);
  font-weight: 800;
}

.excel-series-page .series-standard-compare article > strong {
  color: var(--xl1-ink);
  font-size: clamp(18px, 1.55vw, 27px);
  line-height: 1.45;
  white-space: pre-line;
}

.excel-series-page .series-standard-formula {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  align-content: center;
}

.excel-series-page .series-standard-formula > i { display: none; }

.excel-series-page .series-standard-formula article {
  display: grid;
  grid-template-columns: minmax(110px, .7fr) minmax(0, 1.3fr);
  align-items: center;
  gap: 16px;
  padding: 17px 20px;
}

.excel-series-page .series-standard-formula article > strong {
  color: var(--xl1-accent);
  font: 800 clamp(17px, 1.45vw, 25px)/1.3 Manrope, "Noto Sans Thai", sans-serif;
  overflow-wrap: anywhere;
}

.excel-series-page .series-standard-formula article > span {
  color: var(--xl1-ink);
  font-size: clamp(14px, 1vw, 18px);
  line-height: 1.35;
}

.excel-series-page .series-standard-table {
  overflow: hidden;
  align-self: center;
  border: 1px solid var(--xl1-line);
  border-radius: 18px;
  background: var(--xl1-panel);
}

.excel-series-page .series-standard-table > div {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(0, 1fr);
}

.excel-series-page .series-standard-table > div + div { border-top: 1px solid var(--xl1-line); }

.excel-series-page .series-standard-table :where(b, span) {
  min-width: 0;
  padding: 16px 14px;
  color: var(--xl1-ink);
  font-size: clamp(13px, 1vw, 17px);
  line-height: 1.25;
  text-align: center;
  overflow-wrap: anywhere;
}

.excel-series-page .series-standard-table :where(b, span) + :where(b, span) { border-left: 1px solid var(--xl1-line); }

.excel-series-page .series-standard-table .is-head {
  color: #052718;
  background: var(--xl1-accent);
}

.excel-series-page .series-standard-table .is-head b { color: #052718; }

html[data-theme="light"] .excel-series-page .series-standard-grid article > b,
html[data-theme="light"] .excel-series-page .series-standard-route article > b,
html[data-theme="light"] .excel-series-page .series-standard-table .is-head {
  color: #fff;
  background: #006b35;
}

html[data-theme="light"] .excel-series-page .series-standard-table .is-head b { color: #fff; }

.excel-series-page .presentation-slide.series-image-slide,
.excel-series-page .presentation-slide.series-image-slide.presentation-brand-slide,
.excel-series-page .presentation-slide.series-image-slide.presentation-credit-slide {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: stretch;
  justify-items: stretch;
  padding: 0 !important;
  overflow: hidden;
  background: var(--series-navy);
}

.excel-series-page .presentation-slide.series-image-slide::before,
.excel-series-page .presentation-slide.series-image-slide::after {
  display: none;
}

.series-slide-image {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  max-height: none !important;
  object-fit: contain;
  border: 0 !important;
  border-radius: 0 !important;
  background: var(--series-navy);
  box-shadow: none !important;
}

.excel-series-page .presentation-shell.visual-focus .series-image-slide.is-active {
  display: grid;
  padding: 0 !important;
}

.excel-series-page .presentation-shell.visual-focus .series-image-slide.is-active .series-slide-image {
  width: 100%;
  max-height: 100% !important;
}

@media (max-width: 860px) {
  .series-course-map {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .excel-series-hero-media,
  .excel-series-hero-media img {
    min-height: 300px;
  }
}

@media (max-width: 620px) {
  .series-course-map,
  .series-key-grid,
  .series-formula-grid,
  .series-download-grid {
    grid-template-columns: 1fr;
  }

  .series-course-step {
    min-height: 0;
  }

  .excel-series-hero-media,
  .excel-series-hero-media img {
    min-height: 220px;
  }

  .series-level-badge {
    right: 14px;
    bottom: 14px;
    width: 82px;
    height: 82px;
    border-radius: 18px;
    font-size: 1.45rem;
  }
}

@media (max-height: 520px) and (min-width: 700px) {
  .excel-series-page .excel-teaching-slide[data-visual="series-15"] .series-standard-route {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
  }

  .excel-series-page .excel-teaching-slide[data-visual="series-15"] .series-standard-route article {
    grid-template-columns: 30px minmax(0, 1fr);
    min-height: 64px;
    gap: 8px;
    padding: 10px;
  }

  .excel-series-page .excel-teaching-slide[data-visual="series-15"] .series-standard-route article > b {
    width: 30px;
    height: 30px;
  }

  .excel-series-page .excel-teaching-slide[data-visual="series-15"] .series-standard-route article > strong {
    font-size: 12px;
    line-height: 1.18;
    overflow-wrap: anywhere;
  }
}