: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;
  --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(18px, 2.3cqw, 32px);
}

.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(56px, 6cqw, 88px);
  line-height: 1;
  letter-spacing: 0;
}

.subtitle {
  margin-top: 14px;
  color: var(--muted);
  font-size: clamp(26px, 2.6cqw, 38px);
  font-weight: 700;
}

.router-scene {
  display: grid;
  grid-template-columns: 1fr minmax(360px, 500px) 1fr;
  gap: 28px;
  flex: 1;
  align-items: center;
}

.network-side {
  display: flex;
  min-height: 500px;
  flex-direction: column;
  justify-content: center;
  border: 2px solid var(--line);
  border-radius: 8px;
  padding: 32px;
  background: #fff;
}

.network-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.network-side h2 {
  font-size: clamp(38px, 4cqw, 60px);
  line-height: 1.12;
}

.network-side p {
  margin-top: 14px;
  color: var(--muted);
  font-size: clamp(26px, 2.5cqw, 36px);
  font-weight: 800;
}

.wired-side h2 {
  color: var(--blue);
}

.wireless-side h2 {
  color: var(--green);
}

.port-icon {
  position: relative;
  display: block;
  width: 98px;
  height: 78px;
  flex: 0 0 auto;
  border: 7px solid #17315f;
  border-radius: 8px;
  background: #dbe6f5;
  box-shadow: inset 0 0 0 7px #f8fbff;
}

.port-icon::before {
  position: absolute;
  left: 15px;
  right: 15px;
  bottom: 12px;
  height: 42px;
  background:
    linear-gradient(#d6a939 0 0) 9px 8px / 6px 18px no-repeat,
    linear-gradient(#d6a939 0 0) 20px 8px / 6px 18px no-repeat,
    linear-gradient(#d6a939 0 0) 31px 8px / 6px 18px no-repeat,
    linear-gradient(#d6a939 0 0) 42px 8px / 6px 18px no-repeat,
    #101722;
  clip-path: polygon(
    0 0,
    100% 0,
    100% 76%,
    66% 76%,
    66% 100%,
    34% 100%,
    34% 76%,
    0 76%
  );
  content: "";
}

.port-icon::after {
  position: absolute;
  left: 20px;
  right: 20px;
  top: 11px;
  height: 8px;
  border-radius: 999px;
  background: rgba(23, 49, 95, 0.25);
  content: "";
}

.router {
  position: relative;
  display: flex;
  min-height: 500px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.router img {
  display: block;
  width: min(100%, 500px);
  height: auto;
  border-radius: 8px;
}

.router-wifi,
.title-wifi-icon {
  position: relative;
  display: grid;
  place-items: center;
}

.router-wifi {
  position: absolute;
  top: 126px;
  z-index: 2;
  width: 210px;
  height: 100px;
}

.router-wifi::before,
.router-wifi::after,
.router-wifi span,
.title-wifi-icon::before,
.title-wifi-icon::after,
.title-wifi-icon span {
  position: absolute;
  border: 12px solid transparent;
  border-top-color: var(--green);
  border-radius: 50%;
  content: "";
}

.router-wifi::before {
  width: 180px;
  height: 180px;
}

.router-wifi::after {
  width: 118px;
  height: 118px;
}

.router-wifi span {
  width: 54px;
  height: 54px;
}

.title-wifi-icon {
  width: 100px;
  height: 72px;
  flex: 0 0 auto;
}

.title-wifi-icon::before {
  width: 86px;
  height: 86px;
  border-width: 8px;
}

.title-wifi-icon::after {
  width: 54px;
  height: 54px;
  border-width: 8px;
}

.title-wifi-icon span {
  width: 24px;
  height: 24px;
  border-width: 8px;
}

.router img.lan-photo {
  width: min(100%, 500px);
  margin-top: -28px;
  border-radius: 0;
}

.pros-cons {
  display: grid;
  gap: 12px;
  margin-top: 26px;
}

.pros-cons div {
  display: grid;
  align-items: center;
  border-radius: 8px;
  padding: 16px 18px;
  background: #f6f8fb;
}

.pros-cons span {
  color: var(--muted);
  font-size: clamp(21px, 1.8cqw, 28px);
  font-weight: 800;
  line-height: 1.24;
}

.wireless-tech-list {
  display: grid;
  gap: 12px;
  flex: 1;
  align-content: start;
}

.tech-row {
  display: grid;
  grid-template-columns: 230px 360px 1fr;
  min-height: 128px;
  align-items: center;
  gap: 22px;
  border: 2px solid var(--line);
  border-radius: 8px;
  padding: 12px 22px;
  background: #fff;
}

.tech-row img {
  width: 100%;
  height: 104px;
  object-fit: contain;
  border-radius: 8px;
  background: #f6f8fb;
}

.tech-row h2 {
  color: var(--green);
  font-size: clamp(31px, 3cqw, 46px);
  line-height: 1.1;
}

.tech-row p {
  color: var(--ink);
  font-size: clamp(22px, 1.9cqw, 30px);
  font-weight: 900;
  line-height: 1.24;
}

.tech-text {
  display: grid;
  gap: 10px;
}

.tech-row strong {
  color: var(--muted);
  font-weight: 900;
  font-size: clamp(22px, 1.9cqw, 30px);
  line-height: 1.28;
}

.split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  flex: 1;
}

.concept-card,
.iot-compare article,
.keyword-row > div,
.process > div,
.iot-stack article,
.matrix-cell,
.matrix-label {
  border: 2px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.concept-card {
  display: flex;
  min-height: 250px;
  flex-direction: column;
  justify-content: center;
  padding: 34px;
}

.concept-card .icon {
  width: max-content;
  border-radius: 999px;
  padding: 12px 20px;
  color: #fff;
  font-size: 28px;
  font-weight: 900;
}

.concept-card h2 {
  margin-top: 24px;
  font-size: clamp(36px, 3.7cqw, 54px);
}

.concept-card p {
  margin-top: 16px;
  color: var(--muted);
  font-size: clamp(26px, 2.7cqw, 38px);
  font-weight: 800;
}

.concept-card strong {
  margin-top: 14px;
  font-size: clamp(30px, 3cqw, 44px);
}

.wire .icon {
  background: var(--blue);
}

.wireless .icon {
  background: var(--green);
}

.flow,
.tech-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.flow span,
.tech-strip span {
  border-radius: 8px;
  padding: 18px 14px;
  background: #eef5ff;
  color: #17315f;
  text-align: center;
  font-size: clamp(23px, 2.3cqw, 34px);
  font-weight: 900;
}

.big-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex: 1;
}

.node {
  display: grid;
  width: clamp(150px, 16cqw, 250px);
  height: clamp(150px, 16cqw, 250px);
  place-items: center;
  border: 6px solid var(--blue);
  border-radius: 8px;
  background: #f4f8ff;
  color: var(--blue);
  text-align: center;
  font-size: clamp(34px, 4cqw, 58px);
  font-weight: 900;
}

.main-node {
  border-color: var(--orange);
  background: #fff8ef;
  color: #b95f00;
}

.line {
  width: min(12cqw, 190px);
  height: 10px;
  background: var(--line);
}

.keyword-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.keyword-row > div {
  padding: 28px;
}

.keyword-row b {
  display: block;
  color: var(--blue);
  font-size: clamp(26px, 2.6cqw, 40px);
}

.keyword-row p {
  margin-top: 12px;
  font-size: clamp(28px, 2.8cqw, 42px);
  font-weight: 850;
}

.wireless-map {
  position: relative;
  flex: 1;
  min-height: 440px;
}

.ap {
  position: absolute;
  inset: 50% auto auto 50%;
  display: grid;
  width: clamp(180px, 19cqw, 300px);
  height: clamp(180px, 19cqw, 300px);
  transform: translate(-50%, -50%);
  place-items: center;
  border-radius: 50%;
  background: #eaf8f0;
  color: var(--green);
  font-size: clamp(30px, 3.2cqw, 48px);
  font-weight: 900;
}

.ap span,
.ap::before,
.ap::after {
  position: absolute;
  border: 5px solid rgba(21, 153, 87, 0.28);
  border-radius: 50%;
  content: "";
}

.ap span {
  inset: -34px;
}

.ap::before {
  inset: -86px;
}

.ap::after {
  inset: -138px;
}

.device {
  position: absolute;
  border-radius: 8px;
  padding: 24px 30px;
  background: #fff;
  box-shadow: 0 12px 35px rgba(23, 32, 51, 0.12);
  color: var(--ink);
  font-size: clamp(28px, 2.8cqw, 42px);
  font-weight: 900;
}

.d1 {
  top: 10%;
  left: 12%;
}

.d2 {
  top: 14%;
  right: 12%;
}

.d3 {
  bottom: 12%;
  left: 16%;
}

.d4 {
  right: 16%;
  bottom: 14%;
}

.tech-strip span {
  background: #f0fbf5;
  color: #0d7140;
}

.iot-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  flex: 1;
  min-height: 0;
}

.iot-compare article {
  display: grid;
  grid-template-rows: auto 1fr;
  min-height: 0;
  overflow: hidden;
  padding: clamp(28px, 3cqw, 44px);
}

.iot-compare h2 {
  font-size: clamp(34px, 3.2cqw, 50px);
  line-height: 1.1;
}

.internet-panel h2 {
  color: var(--blue);
}

.things-panel h2 {
  color: var(--green);
}

.internet-diagram,
.things-diagram {
  position: relative;
  min-height: 0;
}

.internet-diagram {
  display: grid;
  min-height: 510px;
  place-items: center;
}

.internet-cloud,
.things-hub {
  position: absolute;
  z-index: 3;
  display: grid;
  place-items: center;
  text-align: center;
  font-weight: 900;
}

.internet-cloud {
  width: clamp(220px, 18cqw, 320px);
  height: clamp(132px, 10cqw, 178px);
  border: 5px solid #c9d9ee;
  border-radius: 50%;
  background: #eef5ff;
  color: #17315f;
  font-size: clamp(30px, 2.7cqw, 42px);
  box-shadow:
    -54px 20px 0 -20px #eef5ff,
    54px 20px 0 -20px #eef5ff;
}

.net-line,
.things-line {
  position: absolute;
  z-index: 1;
  height: 8px;
  border-radius: 999px;
  background: var(--line);
  transform-origin: center;
}

.net-line-a {
  top: 31%;
  left: 20%;
  width: 34%;
  transform: rotate(27deg);
}

.net-line-b {
  top: 31%;
  right: 20%;
  width: 34%;
  transform: rotate(-27deg);
}

.net-line-c {
  bottom: 30%;
  left: 21%;
  width: 34%;
  transform: rotate(-27deg);
}

.net-line-d {
  right: 21%;
  bottom: 30%;
  width: 34%;
  transform: rotate(27deg);
}

.computer-node,
.phone-node {
  position: absolute;
  z-index: 2;
  display: grid;
  justify-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 900;
}

.computer-node span,
.phone-node span {
  display: block;
  border: 5px solid #17315f;
  background: #f6f8fb;
  box-shadow: inset 0 0 0 7px #dbe6f5;
}

.computer-node span {
  width: clamp(116px, 9cqw, 160px);
  height: clamp(80px, 6.4cqw, 112px);
  border-radius: 8px;
}

.computer-node span::after {
  display: block;
  width: 42%;
  height: 12px;
  margin: calc(100% - 2px) auto 0;
  border-radius: 4px;
  background: #17315f;
  content: "";
}

.computer-node b,
.phone-node b,
.thing-module b {
  font-size: clamp(21px, 1.8cqw, 28px);
}

.desktop-a {
  top: 9%;
  left: 8%;
}

.laptop-a {
  top: 9%;
  right: 9%;
}

.server-a {
  bottom: 9%;
  left: 11%;
}

.tablet-a {
  right: 12%;
  bottom: 9%;
}

.things-diagram {
  min-height: 510px;
}

.things-hub {
  top: 42%;
  left: 50%;
  width: clamp(170px, 13cqw, 230px);
  height: clamp(170px, 13cqw, 230px);
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: #eaf8f0;
  color: #0d7140;
  font-size: clamp(25px, 2.2cqw, 34px);
}

.things-hub::before,
.things-hub::after {
  position: absolute;
  border: 5px solid rgba(21, 153, 87, 0.2);
  border-radius: 50%;
  content: "";
}

.things-hub::before {
  inset: -32px;
}

.things-hub::after {
  inset: -72px;
}

.things-line-a {
  top: 34%;
  left: 15%;
  width: 40%;
  transform: rotate(-17deg);
}

.things-line-b {
  top: 34%;
  right: 14%;
  width: 40%;
  transform: rotate(18deg);
}

.things-line-c {
  top: 61%;
  left: 50%;
  width: 30%;
  transform: translateX(-50%) rotate(90deg);
}

.greenhouse {
  position: absolute;
  bottom: 4%;
  left: 50%;
  z-index: 2;
  width: clamp(260px, 21cqw, 360px);
  transform: translateX(-50%);
}

.greenhouse-roof {
  width: 84%;
  height: 82px;
  margin: 0 auto -8px;
  border: 6px solid #159957;
  border-bottom: 0;
  border-radius: 120px 120px 0 0;
  background: rgba(234, 248, 240, 0.92);
}

.greenhouse-body {
  position: relative;
  height: 150px;
  border: 6px solid #159957;
  border-radius: 8px;
  background:
    linear-gradient(90deg, rgba(21, 153, 87, 0.16) 2px, transparent 2px) 25% 0 / 25% 100%,
    linear-gradient(180deg, transparent 68%, #d8f0e3 68%),
    #f7fffb;
}

.plant {
  position: absolute;
  bottom: 38px;
  width: 20px;
  height: 58px;
  border-radius: 999px;
  background: #159957;
}

.plant::before,
.plant::after {
  position: absolute;
  top: 18px;
  width: 44px;
  height: 28px;
  border-radius: 50%;
  background: #57bd7b;
  content: "";
}

.plant::before {
  right: 8px;
  transform: rotate(-24deg);
}

.plant::after {
  left: 8px;
  transform: rotate(24deg);
}

.plant-a {
  left: 30%;
}

.plant-b {
  right: 28%;
}

.water {
  position: absolute;
  right: 28px;
  bottom: 18px;
  width: 52px;
  height: 22px;
  border-radius: 50%;
  background: #8bd3ff;
}

.thing-module {
  position: absolute;
  z-index: 4;
  display: grid;
  width: clamp(190px, 15cqw, 250px);
  gap: 8px;
  justify-items: center;
  border: 2px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  background: #fff;
  text-align: center;
  box-shadow: 0 12px 35px rgba(23, 32, 51, 0.12);
}

.thing-module small {
  color: var(--muted);
  font-size: clamp(16px, 1.25cqw, 20px);
  font-weight: 900;
  line-height: 1.24;
}

.sensor-module {
  top: 5%;
  left: 1%;
}

.actuator-module {
  top: 5%;
  right: 1%;
}

.module-icon {
  position: relative;
  display: block;
  width: 64px;
  height: 64px;
  border-radius: 50%;
}

.sensor-icon {
  border: 7px solid #2563eb;
  background: #eef5ff;
}

.sensor-icon::before,
.sensor-icon::after {
  position: absolute;
  border-radius: 999px;
  background: #2563eb;
  content: "";
}

.sensor-icon::before {
  top: 9px;
  left: 24px;
  width: 8px;
  height: 36px;
}

.sensor-icon::after {
  right: 10px;
  bottom: 10px;
  width: 18px;
  height: 18px;
}

.actuator-icon {
  border: 7px solid #f28c28;
  background: #fff8ef;
}

.actuator-icon::before {
  position: absolute;
  inset: 10px;
  border-radius: 50%;
  background: conic-gradient(from 20deg, #f28c28 0 22%, transparent 22% 38%, #f28c28 38% 60%, transparent 60% 75%, #f28c28 75% 100%);
  content: "";
}

.phone-node {
  right: 8%;
  bottom: 8%;
}

.phone-node span {
  width: clamp(62px, 5cqw, 86px);
  height: clamp(108px, 8.2cqw, 140px);
  border-radius: 16px;
}

.process {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  flex: 1;
  align-items: stretch;
}

.process > div {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 28px;
  text-align: center;
}

.process span {
  display: grid;
  width: 72px;
  height: 72px;
  margin: 0 auto 24px;
  place-items: center;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  font-size: 34px;
  font-weight: 900;
}

.process b {
  font-size: clamp(32px, 3.5cqw, 54px);
}

.process p {
  margin-top: 18px;
  color: var(--muted);
  font-size: clamp(24px, 2.4cqw, 34px);
  font-weight: 800;
}

.iot-stack {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  flex: 1;
  align-items: stretch;
}

.iot-stack article {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  padding: 28px 24px;
}

.iot-stack article: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: "";
}

.iot-stack span {
  display: grid;
  width: 62px;
  height: 62px;
  margin-bottom: 22px;
  place-items: center;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  font-size: 30px;
  font-weight: 900;
}

.iot-stack h2 {
  min-height: 112px;
  font-size: clamp(35px, 3.1cqw, 48px);
  line-height: 1.15;
}

.iot-stack dl {
  display: grid;
  gap: 14px;
  margin: 22px 0 0;
}

.iot-stack dl div {
  display: grid;
  gap: 8px;
  border-radius: 8px;
  padding: 16px;
  background: #f6f8fb;
}

.iot-stack dt,
.iot-stack dd {
  margin: 0;
}

.iot-stack dt {
  color: var(--muted);
  font-size: clamp(18px, 1.5cqw, 24px);
  font-weight: 900;
}

.iot-stack dd {
  color: var(--ink);
  font-size: clamp(24px, 2.1cqw, 32px);
  font-weight: 900;
  line-height: 1.2;
  overflow-wrap: normal;
  word-break: keep-all;
}

.iot-stack article:nth-child(1) h2,
.iot-stack article:nth-child(1) dd {
  color: var(--blue);
}

.iot-stack article:nth-child(2) h2,
.iot-stack article:nth-child(2) dd {
  color: var(--green);
}

.iot-stack article:nth-child(3) h2,
.iot-stack article:nth-child(3) dd {
  color: #9a4f00;
}

.iot-stack article:nth-child(4) h2,
.iot-stack article:nth-child(4) dd {
  color: var(--red);
}

.iot-matrix {
  display: grid;
  grid-template-columns: 180px repeat(4, minmax(0, 1fr));
  grid-template-rows: 0.95fr 1.75fr 1.25fr;
  gap: 14px;
  flex: 1;
  min-height: 0;
}

.matrix-label,
.matrix-cell {
  display: grid;
  min-width: 0;
  place-items: center;
  text-align: center;
  word-break: keep-all;
}

.matrix-label {
  background: #f6f8fb;
  color: var(--ink);
  font-size: clamp(30px, 2.7cqw, 42px);
  font-weight: 900;
}

.main-label {
  background: #eef5ff;
  color: var(--blue);
}

.matrix-cell {
  position: relative;
  padding: 18px;
  font-size: clamp(25px, 2.15cqw, 34px);
  font-weight: 900;
  line-height: 1.22;
}

.flow-cell {
  align-content: center;
  gap: 14px;
  background: #fbfdff;
}

.iot-matrix .flow-cell:nth-child(7)::after,
.iot-matrix .flow-cell:nth-child(8)::after,
.iot-matrix .flow-cell:nth-child(9)::after {
  position: absolute;
  top: 50%;
  right: -22px;
  z-index: 2;
  width: 42px;
  height: 42px;
  transform: translateY(-50%) rotate(45deg);
  border-top: 8px solid var(--line);
  border-right: 8px solid var(--line);
  content: "";
}

.flow-cell span {
  display: grid;
  width: 54px;
  height: 54px;
  place-items: center;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  font-size: 26px;
  font-weight: 900;
}

.flow-cell b {
  font-size: clamp(34px, 3cqw, 48px);
  line-height: 1.12;
}

.flow-cell small {
  max-width: 100%;
  color: var(--ink);
  font-size: clamp(23px, 1.8cqw, 31px);
  font-weight: 900;
  line-height: 1.24;
}

.config-cell {
  color: var(--muted);
}

.tech-cell {
  background: #f6f8fb;
}

.tech-list {
  grid-column: 2 / -1;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  place-items: stretch;
  gap: 12px;
  padding: 16px;
  background: #f6f8fb;
  color: var(--ink);
}

.tech-list span {
  display: grid;
  width: 100%;
  height: 100%;
  min-height: 0;
  place-items: center;
  border: 2px solid var(--line);
  border-radius: 8px;
  background: #fff;
  font-size: clamp(23px, 1.8cqw, 30px);
  line-height: 1.18;
}

.iot-matrix .matrix-cell:nth-child(2),
.iot-matrix .matrix-cell:nth-child(7),
.iot-matrix .matrix-cell:nth-child(12) {
  color: var(--blue);
}

.iot-matrix .matrix-cell:nth-child(3),
.iot-matrix .matrix-cell:nth-child(8),
.iot-matrix .matrix-cell:nth-child(13) {
  color: var(--green);
}

.iot-matrix .matrix-cell:nth-child(4),
.iot-matrix .matrix-cell:nth-child(9),
.iot-matrix .matrix-cell:nth-child(14) {
  color: #9a4f00;
}

.iot-matrix .matrix-cell:nth-child(5),
.iot-matrix .matrix-cell:nth-child(10),
.iot-matrix .matrix-cell:nth-child(15) {
  color: var(--red);
}

.iot-matrix .tech-list {
  color: var(--ink);
}

.example-box {
  border-radius: 8px;
  padding: 28px 34px;
  background: #fff8ef;
  color: #9a4f00;
  font-size: clamp(30px, 3cqw, 46px);
  font-weight: 900;
  text-align: center;
}

.slide[data-slide="4"] .example-box {
  font-size: clamp(25px, 2.35cqw, 36px);
  line-height: 1.16;
  word-break: keep-all;
}

.social-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(2, auto);
  gap: 14px;
  flex: 1;
  min-height: 0;
  align-content: start;
}

.social-grid article {
  aspect-ratio: 1.47;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  border: 2px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.social-grid img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.nav-zone {
  position: fixed;
  top: 0;
  bottom: 0;
  z-index: 10;
  width: 18cqw;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.nav-zone span {
  position: absolute;
  top: 50%;
  opacity: 0.06;
  transition: opacity 160ms ease, transform 160ms ease;
}

.nav-zone:hover span,
.nav-zone:focus-visible span {
  opacity: 0.16;
}

.nav-prev {
  left: 0;
}

.nav-next {
  right: 0;
}

.nav-prev span {
  left: 26px;
  transform: translateY(-50%);
  border-top: 90px solid transparent;
  border-right: 130px solid #6b7788;
  border-bottom: 90px solid transparent;
}

.nav-next span {
  right: 26px;
  transform: translateY(-50%);
  border-top: 90px solid transparent;
  border-bottom: 90px solid transparent;
  border-left: 130px solid #6b7788;
}

.footer {
  position: fixed;
  right: 24px;
  bottom: 20px;
  z-index: 11;
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 20px;
  font-weight: 800;
}

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

.dot {
  width: 12px;
  height: 12px;
  border: 0;
  border-radius: 50%;
  background: #b9c6d3;
  cursor: pointer;
}

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