:root {
  --slide-width: 1920;
  --slide-height: 1080;
  --bg: #f7fafc;
  --paper: #ffffff;
  --ink: #172033;
  --muted: #5c6b7d;
  --line: #d7e0ea;
  --blue: #2563eb;
  --green: #159957;
  --orange: #f28c28;
  --red: #e84a5f;
  --violet: #7c3aed;
  --shadow: 0 24px 70px rgba(26, 41, 61, 0.14);
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
}

body {
  position: relative;
  overflow: hidden;
  background: var(--bg);
  color: var(--ink);
  font-family: "Nanum Gothic", "Apple SD Gothic Neo", "Noto Sans KR", system-ui, sans-serif;
}

.deck {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 1920px;
  height: 1080px;
  container-type: size;
  transform: translate(-50%, -50%) scale(var(--deck-scale, 1));
  transform-origin: center;
  background: var(--paper);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.slide {
  position: absolute;
  inset: 0;
  display: none;
  padding: clamp(30px, 3.4cqw, 52px);
}

.slide.active {
  display: flex;
  flex-direction: column;
  gap: clamp(14px, 1.5cqw, 22px);
}

.slide::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 12px;
  background: linear-gradient(90deg, var(--blue), var(--green), var(--orange));
}

.slide-header {
  position: relative;
  z-index: 1;
}

.page-ref {
  position: absolute;
  top: 4px;
  right: 0;
  border: 2px solid var(--line);
  border-radius: 999px;
  padding: 8px 16px;
  background: #f6f8fb;
  color: var(--muted);
  font-size: clamp(18px, 1.45cqw, 24px);
  font-weight: 900;
}

.unit {
  margin: 0 0 8px;
  color: var(--blue);
  font-size: clamp(24px, 2.2cqw, 36px);
  font-weight: 900;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: clamp(50px, 5.2cqw, 76px);
  line-height: 1;
  letter-spacing: 0;
}

.subtitle {
  margin-top: 10px;
  color: var(--muted);
  font-size: clamp(23px, 2.15cqw, 32px);
  font-weight: 800;
}

.concept-layout {
  display: grid;
  grid-template-columns: 1.04fr 0.96fr;
  grid-template-rows: repeat(2, minmax(0, 1fr));
  gap: 14px;
  flex: 1;
  min-height: 0;
}

.definition-panel,
.type-panel,
.feature-panel,
.case-panel,
.flow-step,
.method-strip > div {
  border: 2px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.definition-panel,
.type-panel,
.feature-panel,
.case-panel {
  padding: 20px 24px;
}

.definition-panel {
  display: grid;
  align-content: center;
}

.type-panel,
.case-panel {
  display: grid;
  align-content: center;
}

.definition-panel h2,
.type-panel h2,
.feature-panel h2,
.case-panel h2,
.flow-step h2 {
  color: var(--green);
  font-size: clamp(30px, 2.8cqw, 42px);
  line-height: 1.1;
}

.definition-panel p {
  margin-top: 12px;
  font-size: clamp(23px, 1.95cqw, 30px);
  font-weight: 800;
  line-height: 1.36;
}

.definition-panel strong {
  color: var(--blue);
}

.type-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 14px;
}

.type-grid > div {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px 14px;
  align-content: start;
  min-height: 176px;
  border-radius: 8px;
  padding: 16px 20px;
  background: #f6f8fb;
}

.type-icon {
  grid-column: 2;
  grid-row: 1;
  display: block;
  width: 74px;
  height: 62px;
  border-radius: 8px;
}

.type-grid b {
  grid-column: 1;
  grid-row: 1;
  align-self: center;
}

.type-grid p {
  grid-column: 1 / -1;
}

.table-icon {
  border: 5px solid #17315f;
  background:
    linear-gradient(#17315f 0 0) 0 31% / 100% 5px no-repeat,
    linear-gradient(90deg, #17315f 0 5px, transparent 5px 33%, #17315f 33% calc(33% + 5px), transparent calc(33% + 5px) 66%, #17315f 66% calc(66% + 5px), transparent 0) 0 0 / 100% 100%,
    #eef5ff;
}

.media-icon {
  position: relative;
  background: #fff8ef;
  border: 5px solid var(--orange);
}

.media-icon::before,
.media-icon::after {
  position: absolute;
  content: "";
}

.media-icon::before {
  inset: 18px 13px;
  clip-path: polygon(0 100%, 34% 50%, 52% 72%, 73% 35%, 100% 100%);
  background: var(--green);
}

.media-icon::after {
  top: 12px;
  right: 14px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--orange);
}

.type-grid b,
.case-list b,
.analysis-detail b,
.method-strip b {
  font-size: clamp(23px, 1.95cqw, 30px);
  font-weight: 900;
}

.type-grid p,
.case-list p,
.flow-step p,
.analysis-detail p,
.method-strip p {
  color: var(--muted);
  font-size: clamp(21px, 1.75cqw, 28px);
  font-weight: 800;
  line-height: 1.28;
}

.feature-panel {
  display: grid;
  grid-template-rows: auto 1fr;
}

.feature-wheel {
  position: relative;
  min-height: 0;
}

.feature-core {
  position: absolute;
  top: 54%;
  left: 50%;
  z-index: 1;
  display: grid;
  width: clamp(132px, 9.2cqw, 170px);
  height: clamp(132px, 9.2cqw, 170px);
  transform: translate(-50%, -50%);
  place-items: center;
  border-radius: 50%;
  background: #eaf8f0;
  color: var(--green);
  text-align: center;
  font-size: clamp(28px, 2.45cqw, 38px);
  font-weight: 900;
  line-height: 1.05;
}

.feature-core::before {
  position: absolute;
  inset: -24px;
  border: 5px solid rgba(21, 153, 87, 0.15);
  border-radius: 50%;
  content: "";
}

.feature-card {
  position: absolute;
  z-index: 2;
  display: grid;
  width: clamp(116px, 7.6cqw, 144px);
  height: clamp(116px, 7.6cqw, 144px);
  place-items: center;
  align-content: center;
  border: 5px solid currentColor;
  border-radius: 50%;
  background: #fff;
  text-align: center;
  font-weight: 900;
  box-shadow: 0 10px 30px rgba(23, 32, 51, 0.08);
}

.feature-card b {
  font-size: clamp(22px, 1.8cqw, 29px);
}

.feature-card span {
  margin-top: 5px;
  font-size: clamp(15px, 1.2cqw, 20px);
}

.volume {
  left: 10%;
  bottom: 5%;
  color: var(--violet);
}

.velocity {
  top: 9%;
  left: 23%;
  color: var(--orange);
}

.variety {
  top: -2%;
  left: 50%;
  transform: translateX(-50%);
  color: #84b832;
}

.veracity {
  top: 9%;
  right: 23%;
  color: #e85ba3;
}

.value {
  right: 10%;
  bottom: 5%;
  color: #58b9c9;
}

.case-list {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.case-list > div {
  display: grid;
  grid-template-columns: 190px 1fr;
  align-items: center;
  gap: 8px;
  border-left: 10px solid var(--blue);
  border-radius: 8px;
  padding: 13px 18px;
  background: #f6f8fb;
}

.case-list > div:nth-child(2) {
  border-left-color: var(--green);
}

.case-list > div:nth-child(3) {
  border-left-color: var(--orange);
}

.string-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  flex: 1;
  min-height: 0;
}

.algorithm-card,
.bmp-panel,
.image-format-panel,
.wav-process,
.audio-format-panel {
  border: 2px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.algorithm-card {
  display: grid;
  align-content: center;
  gap: 22px;
  padding: 34px;
}

.algorithm-head {
  display: flex;
  align-items: center;
  gap: 18px;
}

.algorithm-head span {
  display: grid;
  width: 66px;
  height: 66px;
  place-items: center;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  font-size: 32px;
  font-weight: 900;
}

.algorithm-card h2,
.bmp-panel h2,
.image-format-panel h2,
.wav-process h2,
.audio-format-panel h2 {
  color: var(--green);
  font-size: clamp(34px, 3.2cqw, 50px);
  line-height: 1.1;
}

.algorithm-card p,
.bmp-panel p,
.wav-process > p {
  color: var(--ink);
  font-size: clamp(26px, 2.35cqw, 36px);
  font-weight: 900;
  line-height: 1.32;
}

.algorithm-card strong,
.bmp-panel strong {
  color: var(--muted);
  font-size: clamp(24px, 2.05cqw, 32px);
  font-weight: 900;
  line-height: 1.25;
}

.encoding-demo,
.pattern-demo {
  display: grid;
  gap: 14px;
  border-radius: 8px;
  padding: 22px;
  background: #f6f8fb;
}

.raw-string {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.raw-string span {
  display: grid;
  width: 38px;
  height: 46px;
  place-items: center;
  border-radius: 8px;
  background: #eef5ff;
  color: #17315f;
  font-size: 26px;
  font-weight: 900;
}

.rle-example {
  gap: 5px;
}

.rle-example .group-f,
.compressed-string .group-f {
  background: #eef5ff;
  color: var(--blue);
}

.rle-example .group-e6,
.compressed-string .group-e6 {
  background: #eaf8f0;
  color: var(--green);
}

.rle-example .group-e3,
.compressed-string .group-e3 {
  background: #fff8ef;
  color: var(--orange);
}

.encoding-demo b {
  color: var(--orange);
  font-size: clamp(36px, 3.4cqw, 54px);
  line-height: 1;
}

.compressed-string {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: nowrap;
  color: var(--ink);
  font-size: clamp(34px, 3cqw, 48px);
  font-weight: 900;
}

.compressed-string span,
.compressed-string b {
  display: grid;
  min-width: 44px;
  height: 52px;
  place-items: center;
  border-radius: 8px;
  padding: 0 10px;
  background: #f6f8fb;
}

.pattern-demo > div {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-size: clamp(34px, 3cqw, 48px);
  font-weight: 900;
}

.pattern-demo b {
  border-radius: 8px;
  padding: 8px 12px;
  background: #eaf8f0;
  color: var(--green);
}

.pattern-demo .tuple {
  background: #eef5ff;
  color: var(--blue);
}

.lz-output-line {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-size: clamp(28px, 2.5cqw, 40px);
  font-weight: 900;
}

.lz-output-line span,
.lz-output-line b {
  border-radius: 8px;
  padding: 8px 12px;
}

.lz-output-line .tuple {
  background: #eef5ff;
  color: var(--blue);
}

.pattern-demo p {
  color: var(--muted);
  font-size: clamp(22px, 1.85cqw, 30px);
}

.simulation-layout {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr;
  gap: 22px;
  flex: 1;
  min-height: 0;
}

.sim-board,
.sim-panel {
  display: grid;
  align-content: center;
  border: 2px solid var(--line);
  border-radius: 8px;
  padding: 30px;
  background: #fff;
}

.sim-board h2,
.sim-panel h2 {
  color: var(--green);
  font-size: clamp(34px, 3.2cqw, 50px);
  line-height: 1.1;
}

.sim-string {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 28px 0;
  border-radius: 8px;
  padding: 22px;
  background: #f6f8fb;
}

.sim-string span {
  display: grid;
  width: 54px;
  height: 54px;
  place-items: center;
  border: 3px solid transparent;
  border-radius: 8px;
  background: #eef5ff;
  color: #17315f;
  font-size: 30px;
  font-weight: 900;
}

.sim-string .space-cell {
  width: 72px;
  color: transparent;
}

.rle-sim[data-step="1"] .sim-string span:nth-child(1),
.rle-sim[data-step="1"] .sim-string span:nth-child(2),
.rle-sim[data-step="2"] .sim-string span:nth-child(3),
.rle-sim[data-step="2"] .sim-string span:nth-child(4),
.rle-sim[data-step="3"] .sim-string span:nth-child(5),
.rle-sim[data-step="3"] .sim-string span:nth-child(6),
.rle-sim[data-step="3"] .sim-string span:nth-child(7),
.rle-sim[data-step="3"] .sim-string span:nth-child(8),
.rle-sim[data-step="3"] .sim-string span:nth-child(9),
.rle-sim[data-step="3"] .sim-string span:nth-child(10),
.rle-sim[data-step="4"] .sim-string span:nth-child(11),
.rle-sim[data-step="4"] .sim-string span:nth-child(12),
.rle-sim[data-step="4"] .sim-string span:nth-child(13),
.rle-sim[data-step="5"] .sim-string span:nth-child(14),
.rle-sim[data-step="5"] .sim-string span:nth-child(15),
.rle-sim[data-step="5"] .sim-string span:nth-child(16) {
  border-color: var(--orange);
  background: #fff8ef;
}

.sim-result {
  display: grid;
  gap: 8px;
  border-radius: 8px;
  padding: 20px 22px;
  background: #eef5ff;
}

.sim-result small {
  color: var(--muted);
  font-size: clamp(19px, 1.55cqw, 24px);
  font-weight: 900;
}

.sim-result b {
  color: var(--blue);
  font-size: clamp(34px, 3cqw, 48px);
  font-weight: 900;
  line-height: 1.1;
}

.sim-result .compressed-string,
.sim-result .lz-output-line {
  font-size: clamp(30px, 2.7cqw, 44px);
}

.sim-steps {
  display: grid;
  gap: 12px;
  margin: 24px 0;
  padding: 0;
  list-style: none;
}

.sim-steps li {
  border-left: 8px solid var(--line);
  border-radius: 8px;
  padding: 14px 16px;
  background: #f6f8fb;
  color: var(--muted);
  font-size: clamp(21px, 1.75cqw, 28px);
  font-weight: 900;
  line-height: 1.22;
}

.sim-steps li.active {
  border-left-color: var(--blue);
  background: #eef5ff;
  color: #17315f;
}

.sim-controls {
  display: flex;
  gap: 12px;
}

.sim-controls button {
  flex: 1;
  border: 0;
  border-radius: 8px;
  padding: 16px 18px;
  background: var(--blue);
  color: #fff;
  font: inherit;
  font-size: clamp(20px, 1.7cqw, 26px);
  font-weight: 900;
  cursor: pointer;
}

.sim-controls button:first-child {
  background: #e8eef6;
  color: #17315f;
}

.lz-phrase {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin: 28px 0 18px;
  border-radius: 8px;
  padding: 22px;
  background: #f6f8fb;
  color: var(--ink);
  font-size: clamp(42px, 4cqw, 66px);
  font-weight: 900;
}

.lz-phrase b {
  border: 4px solid var(--orange);
  border-radius: 8px;
  padding: 8px 12px;
  background: #fff8ef;
  color: var(--green);
}

.lz-window {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 18px;
}

.lz-window > div {
  display: grid;
  gap: 8px;
  border-radius: 8px;
  padding: 16px;
  background: #f6f8fb;
}

.lz-window small {
  color: var(--muted);
  font-size: clamp(18px, 1.45cqw, 23px);
  font-weight: 900;
}

.lz-window b {
  color: var(--orange);
  font-size: clamp(32px, 3cqw, 48px);
  font-weight: 900;
}

.quiz-layout {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: 1fr auto;
  gap: 18px;
  flex: 1;
  min-height: 0;
}

.quiz-card {
  display: grid;
  align-content: center;
  gap: 18px;
  border: 2px solid var(--line);
  border-radius: 8px;
  padding: 28px;
  background: #fff;
}

.quiz-card > span {
  display: grid;
  width: 66px;
  height: 66px;
  place-items: center;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  font-size: 32px;
  font-weight: 900;
}

.quiz-card h2 {
  color: var(--green);
  font-size: clamp(36px, 3.2cqw, 52px);
  line-height: 1.08;
  word-break: break-all;
}

.quiz-card label {
  display: grid;
  gap: 10px;
  color: var(--muted);
  font-size: clamp(22px, 1.85cqw, 30px);
  font-weight: 900;
}

.quiz-card input {
  width: 100%;
  border: 3px solid var(--line);
  border-radius: 8px;
  padding: 16px 18px;
  color: var(--ink);
  font: inherit;
  font-size: clamp(27px, 2.4cqw, 38px);
  font-weight: 900;
}

.quiz-card input:focus {
  outline: 0;
  border-color: var(--blue);
}

.quiz-card.correct {
  border-color: rgba(21, 153, 87, 0.55);
}

.quiz-card.incorrect {
  border-color: rgba(232, 74, 95, 0.55);
}

.quiz-feedback {
  min-height: 38px;
  color: var(--muted);
  font-size: clamp(20px, 1.65cqw, 26px);
  font-weight: 900;
}

.quiz-card.correct .quiz-feedback {
  color: var(--green);
}

.quiz-card.incorrect .quiz-feedback {
  color: var(--red);
}

.check-quiz {
  grid-column: 1 / -1;
  justify-self: center;
  min-width: 360px;
  border: 0;
  border-radius: 8px;
  padding: 18px 28px;
  background: var(--blue);
  color: #fff;
  font: inherit;
  font-size: clamp(24px, 2cqw, 32px);
  font-weight: 900;
  cursor: pointer;
}

.image-compression-layout {
  display: grid;
  grid-template-columns: 0.82fr 96px 1.18fr;
  gap: 20px;
  flex: 1;
  min-height: 0;
  align-items: stretch;
}

.bmp-panel,
.image-format-panel,
.wav-process,
.audio-format-panel {
  display: grid;
  align-content: center;
  padding: 28px;
}

.bmp-panel {
  justify-items: center;
  text-align: center;
}

.pixel-art {
  display: grid;
  grid-template-columns: repeat(6, 42px);
  grid-auto-rows: 42px;
  gap: 4px;
  margin: 26px 0;
  padding: 14px;
  border: 5px solid #17315f;
  border-radius: 8px;
  background: #fff;
}

.pixel-art span {
  border-radius: 4px;
  background: #e7eef8;
}

.pixel-art span:nth-child(4),
.pixel-art span:nth-child(9),
.pixel-art span:nth-child(10),
.pixel-art span:nth-child(15),
.pixel-art span:nth-child(16),
.pixel-art span:nth-child(21),
.pixel-art span:nth-child(22),
.pixel-art span:nth-child(27) {
  background: var(--green);
}

.pixel-art span:nth-child(17),
.pixel-art span:nth-child(23),
.pixel-art span:nth-child(24),
.pixel-art span:nth-child(29),
.pixel-art span:nth-child(30) {
  background: var(--orange);
}

.compress-arrow {
  position: relative;
  align-self: center;
  height: 12px;
  border-radius: 999px;
  background: var(--line);
}

.compress-arrow::after {
  position: absolute;
  top: 50%;
  right: -2px;
  width: 44px;
  height: 44px;
  transform: translateY(-50%) rotate(45deg);
  border-top: 10px solid var(--line);
  border-right: 10px solid var(--line);
  content: "";
}

.format-grid,
.audio-formats {
  display: grid;
  gap: 14px;
  margin-top: 22px;
}

.format-grid {
  grid-template-columns: repeat(3, 1fr);
}

.image-format-table {
  display: grid;
  grid-template-columns: 0.7fr repeat(3, 1fr);
  gap: 8px;
  margin-top: 18px;
}

.image-format-table > div {
  display: grid;
  align-items: center;
  min-height: 72px;
  border-radius: 8px;
  padding: 12px 14px;
  background: #f6f8fb;
  color: var(--muted);
  font-size: clamp(21px, 1.75cqw, 28px);
  font-weight: 900;
  line-height: 1.2;
}

.image-format-table .table-head {
  min-height: 56px;
  background: #eef5ff;
  color: #17315f;
  text-align: center;
}

.image-format-table .format-name {
  background: #fff;
  border: 2px solid var(--line);
  text-align: center;
}

.image-format-table b {
  color: var(--blue);
  font-size: clamp(27px, 2.4cqw, 38px);
  font-weight: 900;
}

.format-grid > div,
.audio-formats > div {
  display: grid;
  align-content: start;
  gap: 10px;
  min-height: 0;
  border-radius: 8px;
  padding: 22px;
  background: #f6f8fb;
}

.format-grid b,
.audio-formats b {
  color: var(--blue);
  font-size: clamp(30px, 2.8cqw, 44px);
  font-weight: 900;
}

.format-grid span,
.audio-formats span {
  color: var(--orange);
  font-size: clamp(22px, 1.9cqw, 30px);
  font-weight: 900;
}

.format-grid p,
.audio-formats p,
.sound-steps p {
  color: var(--muted);
  font-size: clamp(21px, 1.75cqw, 28px);
  font-weight: 800;
  line-height: 1.26;
}

.format-grid small,
.audio-formats small {
  color: var(--ink);
  font-size: clamp(22px, 1.9cqw, 30px);
  font-weight: 900;
}

.sound-layout {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 22px;
  flex: 1;
  min-height: 0;
}

.sound-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 26px;
}

.sound-steps > div {
  display: grid;
  gap: 10px;
  align-content: start;
  border-radius: 8px;
  padding: 22px 18px;
  background: #f6f8fb;
}

.wave-graph {
  position: relative;
  display: grid;
  place-items: center;
  height: 116px;
  border-radius: 8px;
  padding: 10px;
  background:
    linear-gradient(#d9e2ee 1px, transparent 1px) 0 25% / 100% 25%,
    linear-gradient(90deg, #e2e8f0 1px, transparent 1px) 0 0 / 14.28% 100%,
    #fff;
}

.wave-graph::before {
  content: none;
}

.wave-graph svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

.wave-line {
  fill: none;
  stroke: var(--blue);
  stroke-linecap: round;
  stroke-width: 6;
}

.sample-lines line {
  stroke: var(--orange);
  stroke-dasharray: 4 4;
  stroke-width: 3;
}

.sample-dots circle {
  fill: var(--orange);
}

.level-lines line {
  stroke: #cbd5e1;
  stroke-dasharray: 5 5;
  stroke-width: 2;
}

.step-line {
  fill: none;
  stroke: var(--green);
  stroke-linejoin: round;
  stroke-width: 8;
}

.level-tags text {
  fill: var(--green);
  font-size: 20px;
  font-weight: 900;
}

.encoded-wave {
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  align-content: center;
}

.code-row {
  display: grid;
  grid-template-columns: 32px 1fr;
  align-items: center;
  gap: 6px;
}

.code-row b {
  display: grid;
  height: 30px;
  place-items: center;
  border-radius: 50%;
  background: #eaf8f0;
  color: var(--green);
  font-size: clamp(15px, 1.15cqw, 20px);
  font-weight: 900;
}

.code-row i {
  display: grid;
  height: 30px;
  place-items: center;
  border-radius: 8px;
  background: #eef5ff;
  color: var(--blue);
  font-style: normal;
  font-size: clamp(16px, 1.25cqw, 20px);
  font-weight: 900;
}

.sound-steps span {
  display: grid;
  width: 58px;
  height: 58px;
  place-items: center;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  font-size: 28px;
  font-weight: 900;
}

.sound-steps b {
  color: var(--green);
  font-size: clamp(28px, 2.5cqw, 40px);
  font-weight: 900;
}

.encoded-wave .code-row b {
  width: 30px;
  height: 30px;
  color: var(--green);
  font-size: clamp(15px, 1.15cqw, 20px);
}

.audio-format-head {
  display: grid;
  grid-template-columns: auto auto 1fr;
  align-items: baseline;
  gap: 14px;
}

.audio-format-head small {
  justify-self: end;
}

.analysis-flow {
  display: grid;
  grid-template-columns: 1fr 1fr 1.35fr 1fr;
  gap: 18px;
  flex: 8 1 0;
  min-height: 0;
}

.flow-step {
  position: relative;
  min-width: 0;
  padding: 28px 24px;
  text-align: center;
}

.flow-step:not(:last-child)::after {
  position: absolute;
  top: 50%;
  right: -23px;
  z-index: 2;
  width: 46px;
  height: 46px;
  transform: translateY(-50%) rotate(45deg);
  border-top: 8px solid var(--line);
  border-right: 8px solid var(--line);
  content: "";
}

.step-heading {
  display: grid;
  align-content: start;
  justify-items: center;
}

.flow-step span {
  display: grid;
  width: 72px;
  height: 72px;
  margin: 0 auto 22px;
  place-items: center;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  font-size: 34px;
  font-weight: 900;
}

.flow-step p {
  margin: 0;
  font-size: clamp(23px, 1.9cqw, 30px);
}

.flow-step small {
  display: block;
  margin-top: 18px;
  border-radius: 8px;
  padding: 12px 14px;
  background: #eef5ff;
  color: #17315f;
  font-size: clamp(21px, 1.75cqw, 27px);
  font-weight: 900;
  line-height: 1.25;
}

.step-body {
  position: absolute;
  top: 50%;
  right: 24px;
  left: 24px;
  transform: translateY(-50%);
}

.analysis-detail {
  display: grid;
  gap: 12px;
}

.analysis-detail > div {
  border-radius: 8px;
  padding: 18px;
  background: #f6f8fb;
  text-align: left;
}

.analysis-detail b {
  color: var(--blue);
}

.analysis-detail p {
  margin-top: 8px;
  font-size: clamp(21px, 1.72cqw, 27px);
}

.method-strip {
  display: grid;
  grid-template-columns: 1fr 1fr 1.35fr 1fr;
  gap: 18px;
  flex: 2 1 0;
  min-height: 0;
}

.method-strip > div {
  display: grid;
  align-content: center;
  padding: 14px 22px;
}

.method-strip > div:first-child {
  grid-column: 1 / span 2;
}

.method-strip > div:last-child {
  grid-column: 3 / span 2;
}

.method-strip b {
  color: var(--orange);
}

.method-strip p {
  margin-top: 8px;
}

.nav-zone {
  position: fixed;
  top: 0;
  bottom: 0;
  z-index: 10;
  width: 11cqw;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.nav-prev {
  left: 0;
}

.nav-next {
  right: 0;
}

.nav-zone span {
  position: absolute;
  top: 50%;
  width: 28px;
  height: 28px;
  border-top: 5px solid rgba(23, 32, 51, 0.18);
  border-left: 5px solid rgba(23, 32, 51, 0.18);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.nav-prev span {
  left: 30px;
  transform: rotate(-45deg);
}

.nav-next span {
  right: 30px;
  transform: rotate(135deg);
}

.nav-zone:hover span,
.nav-zone:focus-visible span {
  opacity: 1;
}

.footer {
  position: fixed;
  right: 24px;
  bottom: 18px;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 14px;
  color: rgba(23, 32, 51, 0.62);
  font-size: 18px;
  font-weight: 900;
}

.footer p {
  margin: 0;
}

.dots {
  display: flex;
  gap: 8px;
}

.dot {
  width: 12px;
  height: 12px;
  border: 0;
  border-radius: 50%;
  background: rgba(23, 32, 51, 0.24);
  cursor: pointer;
}

.dot.active {
  background: var(--blue);
}