@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@300;400;500;700;900&display=swap');

*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: #ffffff;
  color: #000000;
  font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  font-size: 1.0625rem;
  line-height: 1.75;
  font-weight: 400;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: linear-gradient(to right, rgba(0, 0, 0, .055) 1px, transparent 1px);
  background-size: 25% 100%;
}

img { display: block; max-width: 100%; height: auto; }
a { color: #000000; text-decoration: none; }
h1, h2, h3 { margin: 0; font-weight: 900; letter-spacing: -.045em; line-height: 1; }
p { margin: 0 0 1.1rem; }
:focus-visible { outline: 2px solid #000000; outline-offset: 3px; }

main [id] { scroll-margin-top: 6rem; }

/* 顶栏 */
.bar {
  position: sticky;
  top: 0;
  z-index: 60;
  background: #ffffff;
  border-bottom: 1px solid #000000;
}

.bar-in {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .4rem;
  max-width: 1440px;
  margin: 0 auto;
  padding: .5rem clamp(1rem, 3vw, 2rem);
}

.mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding: 0 .55rem;
  border: 1px solid #000000;
}

.mark-t { font-weight: 900; font-size: .95rem; letter-spacing: -.03em; }
.mark-i { width: 26px; height: 26px; object-fit: contain; filter: grayscale(1); }
.mark:hover { background: #000000; }
.mark:hover .mark-t { color: #ffffff; }
.mark:hover .mark-i { filter: grayscale(1) invert(1); }

.nav { display: flex; align-items: center; gap: .15rem; }

.dd { position: relative; }

.dd summary {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0 .75rem;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  list-style: none;
  border: 1px solid transparent;
}

.dd summary::-webkit-details-marker { display: none; }

.dd summary::after {
  content: "";
  width: 7px;
  height: 7px;
  margin-left: .55rem;
  border-right: 1.6px solid #000000;
  border-bottom: 1.6px solid #000000;
  transform: rotate(45deg) translateY(-2px);
}

.dd[open] summary { border-color: #000000; background: #000000; color: #ffffff; }
.dd[open] summary::after { border-color: #ffffff; }

.ddm {
  position: absolute;
  left: 0;
  top: calc(100% + 1px);
  z-index: 70;
  margin: 0;
  padding: 0;
  min-width: 11rem;
  list-style: none;
  background: #ffffff;
  border: 1px solid #000000;
  box-shadow: 8px 8px 0 #000000;
}

.ddm li a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: .5rem 1rem;
  font-size: 1rem;
  border-top: 1px solid #000000;
}

.ddm li:first-child a { border-top: 0; }
.ddm li a:hover { background: #000000; color: #ffffff; }

.find { display: flex; align-items: center; margin-left: auto; min-width: 0; }

.find input {
  width: 11rem;
  min-width: 0;
  min-height: 44px;
  padding: .4rem .2rem;
  font: inherit;
  font-size: 1rem;
  color: #000000;
  background: #ffffff;
  border: 0;
  border-bottom: 1px solid #000000;
  border-radius: 0;
  -webkit-appearance: none;
  appearance: none;
}

.find input::placeholder { color: #000000; opacity: .5; }

/* 首屏 */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  align-items: start;
  gap: clamp(1.5rem, 4vw, 3rem);
  max-width: 1440px;
  min-height: 45vh;
  margin: 0 auto;
  padding: clamp(1.5rem, 4vw, 3rem) clamp(1rem, 4vw, 3rem) clamp(2rem, 5vw, 3.5rem);
}

.hero h1 {
  font-size: clamp(3rem, 10vw, 9rem);
  line-height: .9;
  letter-spacing: -.055em;
}

.lede {
  max-width: 34ch;
  margin: clamp(1rem, 3vw, 2rem) 0 0;
  font-size: clamp(1rem, 1.4vw, 1.2rem);
  line-height: 1.75;
  font-weight: 400;
}

.hero-f {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: clamp(.5rem, 2vw, 1.1rem);
  margin: 0;
}

.hero-f img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  filter: grayscale(1) contrast(1.08);
  border: 1px solid #000000;
}

.hero-f img:nth-child(2) { margin-top: clamp(1.5rem, 6vw, 4rem); }

/* 斜切色带 */
.band {
  height: clamp(48px, 9vw, 130px);
  margin-block: clamp(.5rem, 2vw, 1.5rem);
  background: #000000;
  clip-path: polygon(0 0, 100% 26%, 100% 100%, 0 74%);
}

/* 正文区 */
.zone {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 17rem;
  align-items: start;
  gap: clamp(1.5rem, 5vw, 4rem);
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 3rem) clamp(3rem, 7vw, 5rem);
}

.prose { min-width: 0; max-width: 72ch; }

.prose > section {
  padding-block: clamp(2rem, 5vw, 4.5rem);
  border-top: 1px solid #000000;
}

.prose > section:first-child { border-top: 0; padding-top: .5rem; }

.prose h2 {
  font-size: clamp(1.75rem, 3.6vw, 2.9rem);
  line-height: 1.03;
  margin-bottom: 1rem;
}

.prose h3 {
  font-size: clamp(1.25rem, 2.1vw, 1.6rem);
  line-height: 1.15;
  margin: 1.6rem 0 .6rem;
}

.prose p { max-width: 66ch; }

.prose ul,
.prose ol { margin: 0 0 1.2rem; padding-left: 1.15rem; }
.prose li { margin-bottom: .45rem; }

.prose blockquote {
  margin: 1.5rem 0;
  padding: .2rem 0 .2rem 1.1rem;
  border-left: 5px solid #000000;
  font-weight: 500;
}

.prose figure { margin: 1.8rem 0; }
.prose figcaption { margin-top: .5rem; font-size: 1rem; opacity: .7; }
.prose img { filter: grayscale(1); border: 1px solid #000000; }

.prose a {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.prose a:hover { background: #000000; color: #ffffff; text-decoration: none; }

.prose table { width: 100%; border-collapse: collapse; font-size: 1rem; }
.prose th,
.prose td { padding: .6rem .4rem; text-align: left; border-bottom: 1px solid #000000; }
.prose th { font-weight: 700; }

.prose code {
  padding: .1em .35em;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: .95em;
  background: #000000;
  color: #ffffff;
}

.prose hr { margin: 2rem 0; border: 0; border-top: 1px solid #000000; }

/* 侧栏 */
.rail {
  position: sticky;
  top: 5.5rem;
  padding-top: .9rem;
  border-top: 5px solid #000000;
}

.rail small {
  display: block;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: .3em;
  line-height: 1.5;
}

.rail h2 {
  margin: .3rem 0 1rem;
  font-size: clamp(1.4rem, 2.4vw, 1.9rem);
}

.rail ul { margin: 0; padding: 0; list-style: none; border-top: 1px solid #000000; }

.rail li a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: .35rem 0;
  font-size: 1rem;
  border-bottom: 1px solid #000000;
}

.rail li a:hover { padding-left: .5rem; background: #000000; color: #ffffff; }

/* 页脚 */
.foot {
  margin-top: clamp(2rem, 5vw, 3rem);
  padding: clamp(2.5rem, 6vw, 4.5rem) clamp(1rem, 4vw, 3rem) 1.25rem;
  background: #000000;
  color: #ffffff;
}

.foot a { color: #ffffff; }

.foot-top {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 1.5rem 2rem;
  align-items: start;
  max-width: 1280px;
  margin: 0 auto;
}

.foot address {
  font-style: normal;
  font-weight: 700;
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  letter-spacing: -.02em;
  line-height: 1.5;
}

.foot-b ul {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.foot-b a {
  display: flex;
  align-items: center;
  min-height: 44px;
  font-size: 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, .35);
}

.foot-b a:hover { background: #ffffff; color: #000000; }

.foot-mark {
  max-width: 1280px;
  margin: clamp(2rem, 6vw, 3.5rem) auto 0;
  padding-bottom: .4rem;
  overflow: hidden;
  font-size: clamp(2.4rem, 11vw, 8rem);
  font-weight: 900;
  line-height: .85;
  letter-spacing: -.06em;
  border-bottom: 1px solid rgba(255, 255, 255, .35);
}

.foot-bot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .5rem 1rem;
  max-width: 1280px;
  margin: 1rem auto 0;
  font-size: 1rem;
}

.copy { margin: 0; opacity: .78; }

.foot-bot .top {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  border-bottom: 1px solid transparent;
}

.foot-bot .top:hover { border-bottom-color: #ffffff; }

/* 入场 */
.js .rv {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .6s ease, transform .6s cubic-bezier(.2, .7, .2, 1);
}

.js .rv.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .rv { opacity: 1; transform: none; transition: none; }
}

@media (max-width: 900px) {
  body::before { background-size: 33.333% 100%; }
  .hero { grid-template-columns: minmax(0, 1fr); }
  .zone { grid-template-columns: minmax(0, 1fr); }
  .rail { position: static; margin-top: 2rem; }
  .foot-top { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 620px) {
  .mark { padding: 0 .45rem; }
  .mark-t { font-size: .9rem; }
  .dd summary { padding: 0 .55rem; }
  .find { order: 3; flex: 1 1 100%; margin-left: 0; }
  .find input { width: 100%; }
  .foot-b ul { grid-template-columns: minmax(0, 1fr); }
}
</｜DSML｜ parameter>
</｜DSML｜ invoke>
</｜DSML｜ calls>

button[aria-expanded]{min-width:44px;min-height:44px}