@font-face {
  font-family: "Paperlogy";
  src: url("fonts/Paperlogy-5Medium.ttf") format("truetype");
  font-style: normal;
  font-weight: 500;
  font-display: swap;
}

@font-face {
  font-family: "Paperlogy";
  src: url("fonts/Paperlogy-7Bold.ttf") format("truetype");
  font-style: normal;
  font-weight: 800;
  font-display: swap;
}

:root {
  --blue: #000a65;
  --blue2: #273BF3;
  --blue3: #eaf1f7;
  --ink: #2b1717;
  --muted: #ff0000;
  --paper: #F5F6F8;
  --line: #e3e9ee;
  --white: #F5F6F8;
  --black: #000;
  --radius: 18px;
  --shadow: 0 12px 35px rgba(15,42,65,.08);
  --card-shadow: 5px 5px 5px rgba(20,40,60,.1); /* 카드 그림자 가로 0px, 세로 2px, 흐림 10px, 번짐 0px. 어두운 청회색 계열(20, 40, 60)을 8% 불투명도로 표시*/
  --portfolio-neon-shadow: 0 0 5px rgba(128,128,128,.2), 0 0 10px rgba(128,128,128,.2); /*포트폴리오 카드 네온 px를 키우면 넓어짐*/
  --portfolio-neon-shadow-hover: 0 0 7px rgba(128, 128, 128, 0.48), 0 0 20px rgba(128,128,128,.3);
  --page-section-gap: 32px; /* page-top과 section 사이 여백 */
  --content-gap: 18px; /* 소주제 및 카드 사이 공통 간격 */
  --book-card-aspect-ratio: 4.7 / 5; /*저서 카드 세로 비율*/
  --book-image-crop-top: 10%; /*저서 카드 이미지 자르기*/
  --book-image-crop-right: 0%;
  --book-image-crop-bottom: 0%;
  --book-image-crop-left: 0%;
  --book-image-mobile-aspect-ratio: 1 / 0.8; /*모바일 저서 이미지 비율*/
  --book-image-mobile-crop-top: 0%; /*모바일 이미지 위쪽 자르기*/
  --book-image-mobile-crop-right: 0%; /*모바일 이미지 오른쪽 자르기*/
  --book-image-mobile-crop-bottom: 0%; /*모바일 이미지 아래쪽 자르기*/
  --book-image-mobile-crop-left: 0%; /*모바일 이미지 왼쪽 자르기*/
  --book-image-mobile-scale: 1.3; /*모바일 저서 이미지 확대 배율*/
  --book-image-mobile-offset: -1%; /*모바일 저서 이미지 세로 위치*/
  --book-title-mobile-bottom-space: 8px; /*모바일 책 제목 아래 여백*/
  --book-title-font-size: 1rem; /*저서 카드 글자 크기*/
  --book-title-mobile-font-size: .9rem; /*모바일 저서 제목 글자 크기*/
  --book-title-color: #000;
  --book-title-font-weight: 500;
  --book-title-top: auto; /*저서 카드 글자 위치*/
  --book-title-right: 0px;
  --book-title-bottom: 5px;
  --book-title-left: 0px;
}

* {
  box-sizing: border-box
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 95px
}

body {
  margin: 0;
  font-family: "Paperlogy", sans-serif;
  color: var(--ink);
  background: #fff;
  line-height: 1.7
  
}

a {
  color: inherit;
  text-decoration: none
}

img {
  display: block;
  max-width: 100%
}

button {
  font: inherit
}

.container {
  width: min(1160px,calc(100% - 40px));
  margin: auto
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(227,233,238,.9)
}

.header-inner { /*상단 로고, 메뉴*/
  height: 56px; /*높이*/
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  position: relative
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 850;
  letter-spacing: -.06em;
  font-size: 1.35rem;
  color: var(--blue);
  white-space: nowrap
}

.brand img {
  width: 42px;
  height: 42px;
  object-fit: contain
}

.nav {
  display: flex;
  align-items: center;
  /* 상단 메뉴 항목 사이 간격, clamp(최솟값, 기준값, 최댓값) */
  gap: clamp(14px,0vw,32px);
  position: absolute;
  left: 50%;
  transform: translateX(-50%)
}

.nav a {
  font-size: 1.10em;
  font-weight: 650;
  color: #000c78;
  white-space: nowrap;
  padding: 4px 15px;
  /* 상단 메뉴 버튼의 모서리 둥글기 */
  border-radius: 10px;
  transition: color .2s,background-color .2s
}

.nav a:hover {
  color: var(--blue);
  background: #eaf1f7
}

.nav a.active {
  color: #fff;
  background: var(--blue)
}

.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  background: white;
  border-radius: 10px;
  padding: 8px 11px;
  color: var(--blue)
}

.menu-toggle[aria-expanded="true"] {
  border-color: var(--blue);
  background: var(--blue);
  color: #fff
}

main {
  min-height: 65vh
}

.hero {
  background-color: #f9fcff;
  background-image:
    linear-gradient(rgba(43,23,23,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(43,23,23,.06) 1px,transparent 1px);
  background-size: 24px 24px;
  padding: 25px 0 25px;
  overflow: hidden
}

.hero-grid {
  display: grid;
  grid-template-columns: 0.2fr 0.8fr;
  gap: 80px;
  align-items: center
}

.hero-logo-wrap {
  position: relative;
  width: min(100%,400px);
  aspect-ratio: 1;
  isolation: isolate
}

.hero-logo-wrap::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: -2%;
  border-radius: 50%;
  background: rgb(255, 255, 255);
  filter: blur(20px);
  animation: hero-logo-glow 5s ease-in-out infinite
}

.hero-logo {
  position: relative;
  display: block;
  width: 100%;
  object-fit: contain;
  filter: drop-shadow(0 0 5px rgba(255, 255, 255, 0.38)) drop-shadow(0 8px 16px rgba(31,39,58,.14));
  transition: transform .25s ease, filter .25s ease
}

.hero-logo-wrap:hover .hero-logo {
  transform: translateY(-4px);
  filter: drop-shadow(0 0 5px rgba(0, 13, 255, 0.353)) drop-shadow(0 12px 20px rgba(31,39,58,.2))
}

@keyframes hero-logo-glow {
  0%, 100% { opacity: .6; transform: scale(.96) }
  50% { opacity: .95; transform: scale(1.06) }
}

@media (prefers-reduced-motion: reduce) {
  .hero-logo-wrap::before {
    animation: none
  }
  .hero-logo {
    transition: none
  }
}

.eyebrow {
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .15em;
  color: var(--blue);
  font-weight: 800
}

.hero h1 {
  font-size: clamp(2.7rem,3vw,5.4rem);
  letter-spacing: -.07em;
  line-height: 1.08;
  margin: 18px 0 24px
}

.hero h1 span {
  color: var(--blue)
}

.lead { /*브랜드소개 글*/
  font-size: 1.16rem;
  color: #000000;
  max-width: 1100px;
  margin: 0 0 10px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px
}

.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  /* 강의·협업 문의 둥글기 */
  border-radius: 10px;
  padding: 5px 10px;
  font-weight: 750;
  border: 1px solid var(--blue);
  background: var(--blue);
  color: #fff;
  transition: transform .2s,background .2s
}

.btn:hover {
  transform: translateY(-2px);
  background:  #c80000;
}

.btn.secondary {
  background: transparent;
  color: var(--blue)
}

.hero-actions .btn {
  background: rgba(255, 255, 255, 0);
  color: #111;
  border-color: var(--blue)
}

.hero-actions .btn:hover {
  background: var(--blue);
  color: #fff
}

.hero-art {
  min-height: 330px;
  display: grid;
  place-items: center
}

.section {
  padding: 78px 0
}

.page-top + .section {
  padding-top: var(--page-section-gap)
}

.page-top + .section > .container > .content-section:first-child {
  padding-top: 0
}

.page-top + .section > .container > .content-section:first-child > .channel-group:first-child {
  margin-top: 0
}

.page-top + .section > .container > .content-section:first-child > .channel-group:first-child > .heading-accent {
  margin-top: 0
}

.section.soft {
  background: var(--paper)
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 20px;
  margin-bottom: 32px
}

.section-head h1,.section-head h2 {
  font-size: clamp(2rem,4vw,3rem);
  letter-spacing: -.06em;
  line-height: 1.15;
  margin: 8px 0
}

.section-head p {
  color: var(--muted);
  max-width: 600px;
  margin: 0
}

.kicker { /*상단 메뉴 소개 문구*/
  font-size: .78rem;
  color: var(--blue);
  font-weight: 800;
  letter-spacing: .13em;
  text-transform: uppercase
}

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: white;
  overflow: hidden;
  box-shadow: var(--card-shadow)
}

.qualification-cards .card {
  transition: box-shadow .2s ease, border-color .2s ease
}

.qualification-cards .card {
  border-color: #e3e9ee;
  box-shadow: var(--card-shadow)
}

.card-body { 
  padding: 22px;
}

.card h3 { /*자격 내용1 */
  margin: 0 0 8px;
  font-size: 1.1rem;
  color: var(--blue);
}

.card h4 { /*자격 내용2 */
  margin: 0 0 8px;
  font-size: 1.1rem;
  color: var(--black);
  font-weight: 100
}

.qualification-cards .card h4 {
  white-space: nowrap
}

.qualification-cards .card h2.heading-accent {
  margin: 0 0 12px;
  font-size: 1.1rem;
  letter-spacing: -.04em
}

.muted {
  color: var(--muted)
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2,minmax(0,1fr));
  gap: var(--content-gap)
}

.experience-grid {
  display: grid;
  grid-template-columns: repeat(2,minmax(0,1fr));
  gap: 32px
}

.experience-grid .content-section {
  min-width: 0
}

.experience-grid .card {
  box-shadow: var(--card-shadow)
}

.organization-list {
  display: grid;
  grid-template-columns: repeat(2,minmax(0,1fr));
  gap: 8px 16px; /*자격 카드 안쪽 단어 여백*/
  margin: 0;
  padding: 20px 0px 12px 30px; /*자격 카드 안쪽 여백 */
  list-style: none
}

.organization-list li {
  margin: 0 0 8px;
  overflow-wrap: anywhere;
  font-size: 1.1rem;
  color: var(--black);
  font-weight: 500
}

.credential-list > div {
  padding-top: 16px;
  border-top: 1px solid var(--line)
}

.credential-list h3 {
  margin: 0 0 6px;
  font-size: 1.1rem
}

.credential-list p {
  margin: 0
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3,minmax(0,1fr));
  gap: var(--content-gap)
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4,minmax(0,1fr));
  gap: var(--content-gap)
}

.profile-layout {
  display: grid;
  grid-template-columns: 350px 1fr;
  gap: 60px;
  align-items: start;
  margin: 0px 0px 0px 0px;
}

.profile-photo {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  border-radius: 20px;
  background: var(--blue3);
}

.profile-info h1 {
  font-size: clamp(2.5rem,2.5vw,2.5rem);
  letter-spacing: 0px;
  line-height: 1;
  margin: 5px 0
}

.profile-info .role {
  font-size: 1.5rem;
  color: var(--blue);
  font-weight: 800;
  margin: 0px 0px -8px 0px;
}

.profile-info .role1 {
  font-size: 1.5rem;
  color: var(--blue);
  font-weight: 800;
  margin: 0px 0px -8px 0px;
}

.instructor-email {
  display: block;
  margin-top: 8px;
  color: var(--black);
  font-size: 1rem;
  font-weight: 400
}

.profile-info p {
  color: var(--muted)
}

.content-section {
  padding: 40px 0 0
}

.content-section h2 {
  font-size: 1.5rem;
  letter-spacing: -.04em;
  margin: 0 0 0px
}

.content-section h2.heading-accent { /*수상, 대외활동 제목*/
  position: relative;
  margin: 10px 0px 10px 0px; /*소주제 여백*/
  padding-left: 10px
}

.content-section h2.heading-accent::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 4px;
  height: 25px; /* 왼쪽 파란 선의 세로 길이 */
  background: var(--blue);
  transform: translateY(-50%)
}

.timeline {
  display: grid;
  gap: 0
}

.timeline-item {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px solid var(--line)
}

.timeline-item time { /*대외 활동 날짜*/
  color: var(--blue);
  font-weight: 750;
  font-size: 1.1rem;
}

.timeline-item p { /*대외 활동 내용*/
  color: var(--black);
  margin: 0px ;
  font-size: 1.1rem;
}

.simple-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px
}

.pill {
  border: 1px solid var(--line);
  padding: 8px 13px;
  border-radius: 999px;
  background: #fff;
  font-size: 1.1rem;
}

.award-picture {
  display: block
}

.award-image { /* 수상 이미지 스타일 */
  width: 100%;
  border-radius: 16px;
  margin-bottom: 18px
}

.award-table-wrap {
  overflow-x: auto
}

.award-table { /* 수상 표 스타일 */
  width: 100%;
  table-layout: fixed;
  border-collapse: collapse;
  background: white;
  border: 0
}

.award-table th,.award-table td {
  text-align: left;
  padding: 8px 16px 8px 40px; /* 수상 표의 셀 안쪽 여백 */
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  font-size: 1.1rem; /* 수상일·수상명·시상내역 글자 크기 */
}
/* 수상 표의 열 너비 설정 */
.award-table th:nth-child(1),.award-table td:nth-child(1) {
  width: 20%
}

.award-table th:nth-child(2),.award-table td:nth-child(2) {
  width: 50%
}

.award-table th:nth-child(3),.award-table td:nth-child(3) {
  width: 26%
}

.award-table th {
  background: #edf3f8;
  color: var(--blue)
}

.award-table tbody tr:nth-child(even) {
  background: #f7f9fb
}

.award-table tr:last-child td {
  border-bottom: 0
}

.brand-intro {
  display: grid;
  grid-template-columns: 230px 1fr;
  gap: 32px;
  align-items: center
}

.brand-square {
  aspect-ratio: 1;
  width: 100%;
  border-radius: 22px;
  object-fit: cover;
  background: #eaf1f7
}

.prose p {
  margin: 0 0 15px;
  color: #526273
}

.channel-group {
  margin-top: 0
}

.content-section .channel-group > h2.heading-accent { /*h2소주제 여백*/
  margin: 50px 0px 10px 0px;
}

.link-grid {
  display: grid;
  grid-template-columns: repeat(4,minmax(0,1fr));
  gap: var(--content-gap)
}

.link-card,.course-card {
  border: 1px solid var(--line);
  border-radius: 13px;
  padding: 14px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  background: #fff;
  color: var(--ink);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.4;
  box-shadow: var(--card-shadow);
  transition: border-color .2s,box-shadow .2s
}

.link-card:hover,.course-card:hover { /*카드에 마우스 올렸을 때*/  
  box-shadow: 0 0 10px rgba(39,59,243,.39),0 0 18px rgba(39,59,243,.212)
}

.link-card:focus-visible,.course-card:focus-visible {
  outline: 2px solid var(--blue2);
  outline-offset: 2px;
}

.card-thumbnail {
  display: block;
  flex: 0 0 55px;
  width: 55px;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 8px;
  background: #eaf1f7
}

.link-card > span:first-of-type,.course-card h3 {
  flex: 1;
  min-width: 0
}

.link-card small {
  display: block;
  color: var(--muted);
  font-size: .78rem;
  overflow-wrap: anywhere
}

.link-card .arrow {
  color: var(--blue);
  font-size: 1.2rem
}

.course-grid,.book-grid {
  display: grid;
  grid-template-columns: repeat(4,minmax(0,1fr));
  gap: var(--content-gap)
}

.book-card,.course-card {
  min-width: 0
}

.book-card {
  position: relative;
  display: block;
  aspect-ratio: var(--book-card-aspect-ratio);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  box-shadow: var(--card-shadow);
  transition: box-shadow .2s ease
}

.book-card:hover { /*저서 카드에 마우스 올렸을 때*/
  box-shadow: 0 0 10px rgba(39,59,243,.39),0 0 18px rgba(39,59,243,.212)
}

.book-card:focus-visible {
  outline: 2px solid var(--blue2);
  outline-offset: 2px
}

.book-image {
  display: block;
  position: absolute;
  top: calc(0% - var(--book-image-crop-top));
  left: calc(0% - var(--book-image-crop-left));
  width: calc(100% + var(--book-image-crop-left) + var(--book-image-crop-right));
  height: calc(100% + var(--book-image-crop-top) + var(--book-image-crop-bottom));
  object-fit: cover;
  object-position: center
}

.course-card::after {
  content: "→";
  flex: 0 0 auto;
  color: var(--blue);
  font-size: 1.2rem
}

.cover {
  aspect-ratio: 1/1;
  border-radius: 16px;
  background: linear-gradient(145deg,#eaf1f7,#d7e5f0);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 18px;
  color: var(--blue);
  position: relative;
  overflow: hidden;
  border: 1px solid #dce6ed;
  box-shadow: var(--card-shadow);
  transition: transform .25s,box-shadow .25s
}

.cover:after {
  content: "";
  position: absolute;
  width: 150px;
  height: 150px;
  border: 1px solid rgba(15,76,129,.18);
  border-radius: 50%;
  right: -50px;
  bottom: -55px
}

.cover:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow)
}

.cover .cover-label {
  font-size: .65rem;
  letter-spacing: .12em;
  font-weight: 850
}

.cover strong {
  font-size: clamp(1.05rem,1.6vw,1.5rem);
  letter-spacing: -.06em;
  line-height: 1.2;
  max-width: 95%;
  position: relative;
  z-index: 1
}

.cover .cover-sub {
  font-size: .75rem;
  color: #42617c;
  position: relative;
  z-index: 1
}

.book-card h3,.course-card h3 {
  font-size: 1rem;
  line-height: 1.4;
  margin: 12px 0 5px
}

.book-card h3 {
  position: absolute;
  z-index: 1;
  top: var(--book-title-top);
  right: var(--book-title-right);
  bottom: var(--book-title-bottom);
  left: var(--book-title-left);
  margin: 0;
  padding: 10px;
  background: transparent;
  color: var(--book-title-color);
  font-size: var(--book-title-font-size);
  font-weight: var(--book-title-font-weight);
  text-align: center
}

.course-card h3 {
  margin: 0;
  color: inherit;
  font: inherit
}

.book-card p,.course-card p {
  font-size: .82rem;
  color: var(--muted);
  margin: 0
}

.category-title {
  font-size: 1.25rem;
  letter-spacing: -.04em;
  margin: 34px 0 16px
}

.portfolio-model-grid {
  display: grid;
  grid-template-columns: repeat(2,minmax(0,1fr));
  gap: var(--content-gap)
}

.portfolio-model-card {
  min-width: 0
}

.portfolio-model-card h3 {
  margin: 0 0 10px;
  color: var(--blue);
  font-size: 1.05rem
}

.portfolio-model {
  height: 340px;
  background: #eef3f7;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--line);
  position: relative;
  box-shadow: var(--portfolio-neon-shadow);
  transition: box-shadow .25s ease
}

.portfolio-model:hover {
  box-shadow: var(--portfolio-neon-shadow-hover)
}

.portfolio-model model-viewer {
  width: 100%;
  height: 100%;
  --poster-color: transparent;
  background: radial-gradient(ellipse at center,#fff,#e9f0f5)
}

.portfolio-model-poster {
  height: 100%;
  min-height: 0;
  border-radius: 0
}

.model-note {
  position: absolute;
  left: 50%;
  bottom: 16px;
  transform: translateX(-50%);
  width: fit-content;
  margin: 0;
  font-size: 1.1rem;
  color: var(--black);
  text-align: center;
  white-space: nowrap;
  pointer-events: none;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(2,minmax(0,1fr));
  align-items: start;
  gap: var(--content-gap);
  margin-top: 0px
}

.video-wrap {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  border-radius: 20px;
  overflow: hidden;
  background: #101820;
  box-shadow: var(--portfolio-neon-shadow);
  transition: box-shadow .25s ease
}

.video-wrap:hover {
  box-shadow: var(--portfolio-neon-shadow-hover)
}

.video-wrap iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0
}

.masonry {
  columns: 3 240px;
  column-gap: var(--content-gap)
}

.portfolio-gallery {
  display: grid;
  grid-template-columns: repeat(3,minmax(0,1fr));
  align-items: start;
  gap: var(--content-gap);
  margin-top: 0
}

.portfolio-gallery-item {
  position: relative;
  width: 100%;
  min-width: 0;
  margin: 0;
  border-radius: 16px;
  overflow: hidden;
  background: #e5edf3;
  box-shadow: var(--portfolio-neon-shadow);
  cursor: zoom-in;
  transition: transform .25s ease, box-shadow .25s ease
}

.portfolio-gallery-item:hover,
.portfolio-gallery-item:focus-visible {
  box-shadow: var(--portfolio-neon-shadow-hover)
}

.portfolio-gallery-item img {
  display: block;
  width: 100%;
  height: auto;
  transition: transform .25s ease
}

.portfolio-gallery-item::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 35%; /*포트폴리오 그라데이션 높이*/
  background: linear-gradient(transparent,rgba(0,0,0,.78));
  content: "";
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s ease
}

.portfolio-gallery-caption {
  position: absolute;
  z-index: 1;
  right: 14px;
  bottom: 12px;
  left: 14px;
  color: #fff;
  font-size: .9rem;
  line-height: 1.4;
  opacity: 0;
  pointer-events: none;
  transform: translateY(6px);
  transition: opacity .25s ease, transform .25s ease
}

.portfolio-gallery-item:hover::after,
.portfolio-gallery-item:focus-visible::after,
.portfolio-gallery-item.is-enlarged::after {
  opacity: 1
}

.portfolio-gallery-item:hover .portfolio-gallery-caption,
.portfolio-gallery-item:focus-visible .portfolio-gallery-caption,
.portfolio-gallery-item.is-enlarged .portfolio-gallery-caption {
  opacity: 1;
  transform: translateY(0)
}

.portfolio-gallery-item.is-enlarged {
  position: relative;
  z-index: 2;
  cursor: zoom-out;
  transform: scale(1.5);
  transform-origin: center;
  box-shadow: var(--portfolio-neon-shadow-hover)
}

.portfolio-gallery-item:focus-visible {
  outline: 3px solid var(--blue2);
  outline-offset: 3px
}

.contact-panel { /*PC 화면에서 강의·협업 문의 패널*/
  background: var(--blue);
  color: white;
  border-radius: 24px;
  padding: 15px 30px 10px 30px;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 30px
}

.contact-panel h1 { 
  font-size: clamp(2.2rem,4vw,3.6rem);
  letter-spacing: -.06em;
  line-height: 1.15;
  margin: 12px 0
}

.contact-panel p {
  color: white;
  
  font-size: 1.1rem;  
  max-width: 700px
}

.contact-panel .btn { /*강의협업 문의 이메일버튼*/
  background: white;
  color: var(--blue);
  border-color: white;
  font-size: 1.4rem; 
  white-space: nowrap
}

.contact-panel .eyebrow {
  color: #c6dced
}

.footer {
  padding: 20px 0;
  border-top: 1px solid var(--line);
  color: var(--black);
  font-size: 1rem
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap
}

.notice {
  background: #fff7e8;
  border: 1px solid #f0dfba;
  border-radius: 12px;
  padding: 13px 16px;
  color: #745a26;
  font-size: .88rem
}

.empty-art {
  display: grid;
  place-items: center;
  text-align: center;
  color: var(--blue);
  font-weight: 850;
  letter-spacing: -.06em;
  background: linear-gradient(145deg,#eaf1f7,#d7e5f0);
  border-radius: 18px;
  padding: 20px;
  min-height: 180px
}

.empty-art span {
  font-size: 2.2rem
}

.page-top {
  /* 상단 메뉴 소개 여백 */
  padding: 30px 0px 20px 0px;
  background: var(--paper)
}

.page-top .kicker {
  margin-bottom: -10px; /* Instructor와 강사 소개 사이 간격 */
}

.page-top h1 {
  font-size: clamp(2.5rem,2.5vw,2.5rem);
  letter-spacing: -.07em;
  margin: 0 0 5px; /* 강사 소개와 설명 문장 사이 간격 */
}

.page-top p { /*상단 메뉴 소개글*/
  color: var(--black);
  max-width: 1000px;
  margin: 0; /* 설명 문장 바깥 여백 */
  font-size: 1.15rem;
}

.small-label {
  font-size: .75rem;
  font-weight: 800;
  color: var(--blue);
  letter-spacing: .1em;
  text-transform: uppercase
}

@media(max-width:900px) {
  .qualification-cards {
    grid-template-columns: 1fr
  }
  .experience-grid {
    grid-template-columns: 1fr;
    gap: 0
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 30px
  }
  .hero-art {
    min-height: 280px
  }
  .portfolio-model-grid {
    grid-template-columns: repeat(2,minmax(0,1fr))
  }
  .grid-4,.book-grid,.course-grid {
    grid-template-columns: repeat(3,minmax(0,1fr))
  }
  .course-grid {
    grid-template-columns: repeat(2,minmax(0,1fr))
  }
  .link-grid {
    grid-template-columns: repeat(2,minmax(0,1fr))
  }
  .profile-layout {
    grid-template-columns: 220px 1fr;
    gap: 10px
  }
  .nav {
    /* 태블릿 화면에서 메뉴 항목 사이 간격 */
    gap: 14px
  }
  .nav a {
    padding: 6px 10px; /* 위아래 / 좌우 안쪽 여백 */
  font-size: 0.9rem; /* 글자 크기 */
  }
  .contact-panel {
    grid-template-columns: 1fr
  }
  .contact-panel .btn {
    justify-self: start
  }
}

@media(max-width:680px) {
  .video-grid {
    grid-template-columns: 1fr
  }
  .container {
    width: min(100% - 30px,1160px)
  }
  .header-inner {
    height: 50px
  }
  .brand {
    font-size: 1.2rem
  }
  .brand img { /*모바일 상단 로고 이미지 크기*/
    width: 32px;
    height: 32px
  }
  .menu-toggle {
    display: block;
    padding: 5px 8px;
    font-size: .85rem /*상단 메뉴 버튼 글자 크기*/
  }
  .nav { /* 모바일 화면에서 메뉴 항목 */
    display: none;
    position: absolute;
    top: 50px;
    left: 60%;
    right: 0;
    box-sizing: border-box;
    transform: none;
    background: white;
    border: 1px solid #cbd5df;
    border-radius: 12px; /* 숫자를 키우면 더 둥글게 */
    box-shadow: 0 4px 12px rgba(20, 40, 60, .12);
    padding: 0px 0px 0px 0px;
    flex-direction: column;
    align-items: stretch;
    gap: 0
  }
  .nav.open {
    display: flex
  }
  .nav a {
    width: 100%;
    box-sizing: border-box;
    padding: 5px 0;
    border-radius: 0px; /* 숫자를 키우면 더 둥글게 */
    font-size: 1rem;
    text-align: center
  }
  .nav a:last-child {
    border: 0
  }
  .hero {
    padding: 58px 0 50px
  }
  .contact-panel {
    padding: 10px 70px 20px 20px;
  }
  .contact-panel > div {
    min-width: 0
  }
  .contact-panel p {
    max-width: 100%;
    overflow-wrap: anywhere;
    padding-right: 20px
  }
  .hero-art {
    min-height: 250px;
    padding: 0
  }
  .hero-logo-wrap {
    width: clamp(160px,55vw,250px)
  }
  .section {
    padding: 54px 0 /* 섹션 안쪽의 위아래 여백 */
  }
  .section-head {
    display: block
  }
  .section-head p {
    margin-top: 12px /* 섹션 바깥쪽의 제목과 설명 문장 사이 간격 */
  }
  .grid-2,.grid-3 {
    grid-template-columns: 1fr
  }
  .qualification-cards .card-body {
    padding: 14px
  }
  .qualification-cards .card h4 {
    font-size: .7rem
  }
  .grid-4,.book-grid,.course-grid {
    grid-template-columns: repeat(2,minmax(0,1fr));
    gap: var(--content-gap)
  }
  .book-card h3 { /*모바일 저서 문자 */
    position: relative;
    inset: auto;
    padding: 8px 6px var(--book-title-mobile-bottom-space);
    font-size: var(--book-title-mobile-font-size);
    line-height: 1.3;
    overflow-wrap: anywhere;
    background: white;
  }
  .book-card {
    aspect-ratio: auto
  }
  .book-image {
    position: relative;
    top: auto;
    left: auto;
    width: 100%;
    height: auto;
    aspect-ratio: var(--book-image-mobile-aspect-ratio);
    object-fit: cover;
    clip-path: inset(
      var(--book-image-mobile-crop-top)
      var(--book-image-mobile-crop-right)
      var(--book-image-mobile-crop-bottom)
      var(--book-image-mobile-crop-left)
    );
    transform: translateY(var(--book-image-mobile-offset)) scale(var(--book-image-mobile-scale));
    transform-origin: center
  }
  .course-grid {
    grid-template-columns: 1fr;
    gap: var(--content-gap)
  }
  .profile-layout {
    grid-template-columns: 1fr
  }
  .profile-photo {
    max-width: 250px;
    aspect-ratio: 3/4
  }
  .brand-intro {
    grid-template-columns: 1fr;
    gap: 20px
  }
  .brand-square {
    max-width: 190px
  }
  .timeline-item { /*대외 활동*/
    grid-template-columns: 1fr;
    gap: 3px;
  }
  .award-table th,.award-table td {
    padding: 10px 9px
  }
  .award-table td:first-child {
    white-space: normal;
    overflow-wrap: anywhere
  }
  .link-grid {
    grid-template-columns: 1fr
  }
  .portfolio-model-grid {
    grid-template-columns: 1fr
  }
  .portfolio-model {
    height: 320px
  }
  .masonry {
    columns: 2 140px;
    column-gap: var(--content-gap)
  }
  .portfolio-gallery {
    grid-template-columns: repeat(2,minmax(0,1fr))
  }
  .portfolio-gallery-item,
  .portfolio-gallery-item.is-enlarged {
    transform: none;
    cursor: default
  }
  .page-top {
    padding: 42px 0 28px
  }
  .cover {
    padding: 14px
  }
  .cover strong {
    font-size: 1.1rem
  }
  .footer-inner {
    display: block
  }
  .footer-inner span {
    display: block;
    margin: 4px 0
  }
}

@media(max-width:380px) {
  .grid-4,.book-grid,.course-grid {
    grid-template-columns: 1fr 1fr
  }
  .cover strong {
    font-size: 1rem
  }
  .masonry {
    columns: 1
  }
  .portfolio-gallery {
    grid-template-columns: 1fr
  }
}