:root {
  color-scheme: light;
  --bg: #ffffff;
  --bg-soft: #ffffff;
  --surface: #ffffff;
  --text: #16181d;
  --muted: #6a7080;
  --line: #e6e8ee;
  --line-strong: #d7dce8;
  --brand: #2e6df6;
  --brand-soft: #edf3ff;
  --shadow-lg: 0 14px 34px rgba(20, 24, 32, 0.06);
  --shadow-md: 0 8px 18px rgba(20, 24, 32, 0.04);
  --radius-xl: 24px;
  --radius-lg: 18px;
  --radius-md: 14px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

main section[id] {
  scroll-margin-top: 86px;
}

body {
  margin: 0;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
    "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.58;
  background: #ffffff;
}

.page {
  width: min(1160px, 100% - 32px);
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(255, 255, 255, 0.82);
  border-bottom: 1px solid var(--line);
  transition: background 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.topbar.scrolled {
  background: rgba(255, 255, 255, 0.68);
  border-bottom-color: rgba(215, 220, 232, 0.85);
  box-shadow: 0 10px 24px rgba(16, 22, 32, 0.06);
}

.topbar-inner {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand {
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #2b3242;
}

.nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}

.nav::-webkit-scrollbar {
  display: none;
}

.nav a {
  flex: 0 0 auto;
  text-decoration: none;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  border-radius: 999px;
  padding: 7px 11px;
  border: 1px solid transparent;
  transition: all 0.2s ease;
}

.nav a:hover {
  color: #273149;
  border-color: var(--line-strong);
  background: #fff;
}

.language-switch {
  font: inherit;
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-width: 38px;
  height: 32px;
  padding: 0 10px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: #ffffff;
  color: #2b3242;
  text-decoration: none;
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.language-switch:hover {
  background: var(--brand-soft);
  border-color: #c9d6f4;
  color: #23478e;
}

.language-switch-mark {
  line-height: 1;
}

.language-switch-icon {
  width: 16px;
  height: 16px;
  stroke: var(--brand);
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
}

.language-page[hidden] {
  display: none;
}

.mobile-nav-group {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.mobile-menu-backdrop,
.mobile-nav {
  display: none;
}

.menu-toggle {
  display: none;
  width: 38px;
  height: 38px;
  border-radius: 0;
  border: 0;
  background: transparent;
  -webkit-appearance: none;
  appearance: none;
  position: relative;
  z-index: 2100;
  overflow: hidden;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
}

.menu-toggle-line {
  position: absolute;
  left: 50%;
  display: block;
  width: 18px;
  height: 2px;
  margin: 0;
  border-radius: 1px;
  background: #2b3242;
  transform: translateX(-50%) translateZ(0);
  transform-origin: center;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transition: top 0.2s ease, transform 0.2s ease, opacity 0.2s ease, background-color 0.2s ease;
}

.menu-toggle-line:nth-child(1) {
  top: 12px;
}

.menu-toggle-line:nth-child(2) {
  top: 18px;
}

.menu-toggle-line:nth-child(3) {
  top: 24px;
}

.menu-toggle.is-open .menu-toggle-line:nth-child(1) {
  top: 18px;
  transform: translateX(-50%) rotate(45deg);
}

.menu-toggle.is-open .menu-toggle-line:nth-child(2) {
  opacity: 0;
  transform: translateX(-50%) scaleX(0);
  background: transparent;
  visibility: hidden;
}

.menu-toggle.is-open .menu-toggle-line:nth-child(3) {
  top: 18px;
  transform: translateX(-50%) rotate(-45deg);
}

main {
  padding: 40px 0 58px;
}

.hero {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: 28px;
}

.hero-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: minmax(0, 1.45fr) minmax(270px, 0.85fr);
}

.hero-main {
  min-width: 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--line-strong);
  background: #fff;
  color: var(--muted);
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

h1,
h2,
h3 {
  margin: 0;
  letter-spacing: -0.025em;
}

h1 {
  font-size: clamp(1.82rem, 4.2vw, 2.9rem);
  line-height: 1.03;
}

.subtitle {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.summary {
  margin: 16px 0 0;
  color: #3f4658;
  max-width: 64ch;
}

.hero-actions {
  margin-top: 18px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-size: 0.86rem;
  font-weight: 700;
  border-radius: 10px;
  padding: 10px 14px;
  border: 1px solid transparent;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, #3f7bff, #2e6df6);
  box-shadow: 0 10px 20px rgba(46, 109, 246, 0.28);
}

.btn-secondary {
  color: #1c2436;
  border-color: var(--line-strong);
  background: #fff;
}

.hero-side {
  background: transparent;
  border: 0;
  border-left: 1px solid var(--line);
  border-radius: 0;
  padding: 4px 0 4px 18px;
}

.profile {
  display: flex;
  align-items: center;
  gap: 12px;
}

.profile img {
  width: 104px;
  height: 104px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center top;
  border: 3px solid #fff;
  box-shadow: 0 14px 26px rgba(19, 26, 38, 0.14);
}

.profile-name {
  font-weight: 700;
  font-size: 0.96rem;
}

.profile-meta {
  margin-top: 2px;
  color: var(--muted);
  font-size: 0.84rem;
}

.meta-list {
  margin-top: 13px;
  display: grid;
  gap: 7px;
}

.meta-item {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 7px;
  font-size: 0.84rem;
  color: var(--muted);
}

.meta-item strong {
  color: #2a3144;
}

.section {
  margin-top: 26px;
  padding: 0;
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.section + .section {
  border-top: 1px solid var(--line);
  padding-top: 24px;
}

.section-head {
  display: flex;
  flex-direction: column;
  gap: 3px;
  margin-bottom: 14px;
}

.section-title {
  font-size: clamp(1.35rem, 3vw, 2.1rem);
}

.section-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.83rem;
  letter-spacing: 0.02em;
}

.section-subhead {
  margin: 18px 0 10px;
}

.subsection-title {
  margin: 0;
  color: #1b202d;
  font-size: 1.02rem;
  font-weight: 800;
}

.cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 11px;
}

.card {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 14px;
  box-shadow: 0 1px 0 rgba(22, 24, 29, 0.02);
}

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 8px;
}

.card-title {
  margin: 0;
  font-size: 0.99rem;
  font-weight: 700;
  color: #1b202d;
}

.card-org {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.section-link-btn {
  display: inline-flex;
  align-items: center;
  margin-top: 8px;
  padding: 5px 10px;
  border: 1px solid #c9d6f4;
  border-radius: 999px;
  background: #f6f9ff;
  color: #2f539b;
  text-decoration: none;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.section-link-btn:hover {
  background: #edf3ff;
  border-color: #b9c9ef;
  color: #23478e;
}

.talk-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.web-project-links {
  line-height: 1.55;
}

.web-project-links a {
  color: #2f539b;
  font-weight: 700;
  text-decoration: none;
}

.web-project-links a:hover {
  color: #23478e;
}

.talk-actions .section-link-btn {
  margin-top: 0;
}

.card-date {
  margin: 0;
  color: #51679a;
  font-size: 0.73rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  white-space: nowrap;
}

.card-desc {
  margin: 0;
  color: #4b5468;
  font-size: 0.89rem;
}

.bullets {
  margin: 0;
  padding-left: 18px;
  color: #4b5468;
  font-size: 0.88rem;
}

.bullets li + li {
  margin-top: 6px;
}

.logo-card {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 12px;
  align-items: start;
}

.logo-box {
  width: 60px;
  height: 60px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 7px;
  overflow: hidden;
}

.logo-box img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  background: #ffffff;
  border-radius: 0;
}

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

.language-details {
  display: grid;
  gap: 6px;
  margin-top: 12px;
  padding-top: 11px;
  border-top: 1px solid var(--line);
  color: #4b5468;
  font-size: 0.82rem;
}

.language-details p {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 8px;
  margin: 0;
}

.language-details strong {
  color: #26324a;
}

.language-details span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.chip {
  font-size: 0.8rem;
  font-weight: 700;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 10px;
  background: #ffffff;
  color: #32446f;
}

.award-card.second-place {
  border-color: #d8dde9;
  background: linear-gradient(180deg, #fcfdff, #f6f8fc);
  box-shadow: 0 10px 20px rgba(116, 129, 156, 0.1);
}

.award-card.first-place {
  border-color: #ead290;
  background: linear-gradient(180deg, #fffcf2, #fff9e6);
  box-shadow: 0 10px 20px rgba(179, 134, 44, 0.11);
}

.award-top {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 7px;
}

.medal {
  position: relative;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: radial-gradient(circle at 32% 28%, #f4dfbe 0, #d8af73 55%, #a77a47 100%);
  border: 1px solid #b58a55;
  flex: 0 0 auto;
}

.medal::before,
.medal::after {
  content: "";
  position: absolute;
  bottom: -8px;
  width: 6px;
  height: 9px;
  background: linear-gradient(180deg, #4668b7, #2f4f9b);
}

.medal::before {
  left: 2px;
  clip-path: polygon(0 0, 100% 0, 72% 100%, 0 100%);
}

.medal::after {
  right: 2px;
  clip-path: polygon(28% 0, 100% 0, 100% 100%, 0 100%);
}

.award-card.first-place .medal {
  background: radial-gradient(circle at 32% 28%, #fff2b7 0, #f2cd67 54%, #ca9a2f 100%);
  border-color: #d0a545;
}

.award-card.second-place .medal {
  background: radial-gradient(circle at 32% 28%, #f4f7fc 0, #d6dde8 56%, #a2afc2 100%);
  border-color: #adb9cb;
}

footer {
  margin-top: 18px;
  text-align: center;
  color: var(--muted);
  font-size: 0.81rem;
}

.pdf-modal[hidden] {
  display: none;
}

.pdf-modal {
  position: fixed;
  inset: 0;
  z-index: 4000;
  display: grid;
  place-items: center;
  padding: 24px;
}

.pdf-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(20, 24, 32, 0.52);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.pdf-modal-panel {
  position: relative;
  width: min(1100px, 100%);
  height: min(82vh, 760px);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  background: #ffffff;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.pdf-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
}

.pdf-modal-title {
  margin: 0;
  color: #1b202d;
  font-size: 1rem;
  line-height: 1.35;
}

.pdf-modal-actions {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
  gap: 8px;
}

.pdf-modal-actions .section-link-btn {
  margin-top: 0;
}

.pdf-modal-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 31px;
  padding: 5px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: #ffffff;
  color: #3f4758;
  font: inherit;
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.pdf-modal-close:hover {
  background: #f7f8fb;
  border-color: #c9ceda;
  color: #1f2635;
}

.pdf-frame {
  width: 100%;
  flex: 1;
  border: 0;
  background: #f6f8fb;
}

body.modal-open {
  overflow: hidden;
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal.show {
  opacity: 1;
  transform: translateY(0);
}

@media (min-width: 760px) {
  .cards.cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cards.cols-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .cards.cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 880px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-side {
    border-left: 0;
    border-top: 1px solid var(--line);
    padding: 14px 0 0;
    margin-top: 4px;
  }
}

@media (max-width: 760px) {
  .topbar {
    z-index: 3100;
  }

  .page {
    width: min(1160px, 100% - 40px);
  }

  main section[id] {
    scroll-margin-top: 78px;
  }

  .topbar-inner {
    position: relative;
    z-index: 3150;
    min-height: 62px;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
    padding: 8px 0;
  }

  .topbar .nav {
    display: none;
  }

  .topbar-actions {
    margin-left: auto;
    padding-right: 48px;
  }

  .menu-toggle {
    display: inline-flex;
    position: fixed;
    top: 12px;
    right: 20px;
    z-index: 3300;
  }

  .mobile-menu-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 3000;
    background: rgba(246, 250, 255, 0.62);
    backdrop-filter: blur(24px) saturate(160%);
    -webkit-backdrop-filter: blur(24px) saturate(160%);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.24s ease, visibility 0.24s ease;
  }

  .mobile-menu-backdrop.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .mobile-nav {
    display: flex;
    position: fixed;
    inset: 0;
    z-index: 3050;
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    padding: 86px 24px 24px;
    min-height: 100dvh;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
  }

  .mobile-nav.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
  }

  .mobile-nav a {
    width: auto;
    border: 0;
    border-radius: 0;
    padding: 0;
    background: transparent;
    font-size: 1rem;
    font-weight: 600;
    color: #2d3446;
    text-decoration: none;
  }

  .mobile-nav a:hover {
    border-color: transparent;
    background: transparent;
    color: #1a2234;
  }

  body.menu-open {
    overflow: hidden;
  }

  .hero {
    padding: 15px;
  }

  .section {
    padding: 0;
  }

  .section + .section {
    padding-top: 20px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .meta-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 1px;
  }

  .card-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .card-date {
    white-space: normal;
  }

  .logo-card {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .logo-box {
    width: 52px;
    height: 52px;
    border-radius: 10px;
  }

  .profile img {
    width: 84px;
    height: 84px;
  }

  .pdf-modal {
    align-items: stretch;
    padding: 0;
  }

  .pdf-modal-panel {
    width: 100%;
    height: 100dvh;
    border-radius: 0;
    border: 0;
  }

  .pdf-modal-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .pdf-modal-actions {
    width: 100%;
  }

  .pdf-modal-actions .section-link-btn,
  .pdf-modal-close {
    flex: 1;
    justify-content: center;
  }
}