/* ── 상단 바 ─────────────────────────────────────────────────── */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--paper);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.topbar__in {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 66px;
}

.topbar__nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.topbar__link {
  font-size: 14px;
  color: var(--muted);
}

.topbar__link:hover {
  color: var(--ink);
}

@media (max-width: 620px) {
  .topbar__link {
    display: none;
  }
}

/* ── 히어로 ──────────────────────────────────────────────────── */
.hero {
  padding: clamp(48px, 9vw, 104px) 0 clamp(40px, 7vw, 88px);
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(36px, 5vw, 56px);
  align-items: center;
}

@media (min-width: 940px) {
  .hero__grid {
    grid-template-columns: 0.9fr 1.1fr;
  }
}

.hero__title {
  margin-top: 18px;
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(46px, 8.6vw, 84px);
  line-height: 0.94;
  letter-spacing: -0.045em;
}

/* 제목 안의 '지운' 글자 — 지우개가 지나간 자리 */
.struck {
  position: relative;
  display: inline-block;
  color: var(--muted);
}

.struck::after {
  content: "";
  position: absolute;
  left: -2%;
  top: 48%;
  width: 104%;
  height: 9px;
  background: var(--eraser);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left center;
  animation: strike 0.7s 0.5s var(--ease) forwards;
}

@keyframes strike {
  to {
    transform: scaleX(1);
  }
}

.hero__sub {
  margin-top: 22px;
  max-width: 34ch;
  font-size: clamp(16px, 1.9vw, 18px);
  color: var(--muted);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
}

.hero__note {
  margin-top: 16px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
}

/* ── 서명 요소: 드래그해서 지우는 미리보기 ───────────────────── */
.demo {
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: var(--card);
  overflow: hidden;
  box-shadow: 0 24px 60px -32px rgba(11, 13, 16, 0.35);
}

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

.demo__tabs {
  display: flex;
  gap: 4px;
  padding: 3px;
  background: var(--paper);
  border-radius: 999px;
}

.demo__tab {
  border: 0;
  background: transparent;
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
}

.demo__tab[aria-selected="true"] {
  background: var(--ink);
  color: #fff;
}

.demo__hint {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.demo__stage {
  position: relative;
  aspect-ratio: 4 / 3;
  touch-action: none;
  cursor: ew-resize;
  user-select: none;
}

.demo__layer {
  position: absolute;
  inset: 0;
}

.demo__layer svg {
  width: 100%;
  height: 100%;
}

/* 지워진 쪽(=결과)이 위, clip-path로 가려짐 */
.demo__layer--after {
  clip-path: inset(0 0 0 var(--x, 50%));
}

.demo__layer--before {
  clip-path: inset(0 calc(100% - var(--x, 50%)) 0 0);
}

.demo__handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--x, 50%);
  width: 2px;
  background: var(--eraser);
  transform: translateX(-1px);
}

.demo__grip {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 26px;
  border-radius: 5px;
  background: var(--eraser);
  box-shadow: 0 6px 18px -6px rgba(255, 61, 87, 0.9);
  display: grid;
  place-items: center;
}

.demo__grip span {
  width: 14px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  box-shadow: 0 4px 0 #fff, 0 -4px 0 #fff;
}

.demo__stage:has(#stageRange:focus-visible) .demo__grip {
  outline: 2px solid var(--ink);
  outline-offset: 4px;
}

.demo__foot {
  display: flex;
  justify-content: space-between;
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ── 섹션 공통 ───────────────────────────────────────────────── */
.section {
  padding: clamp(56px, 8vw, 96px) 0;
  border-top: 1px solid var(--line);
}

.section__title {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(28px, 4.2vw, 40px);
  line-height: 1.08;
  letter-spacing: -0.035em;
  margin-top: 12px;
}

.section__lede {
  margin-top: 14px;
  max-width: 46ch;
  color: var(--muted);
}

/* ── 기능 두 가지 ────────────────────────────────────────────── */
.jobs {
  display: grid;
  gap: 16px;
  margin-top: 40px;
  grid-template-columns: 1fr;
}

@media (min-width: 780px) {
  .jobs {
    grid-template-columns: 1fr 1fr;
  }
}

.job {
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: var(--card);
  padding: 26px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.job__thumb {
  height: 132px;
  border-radius: 10px;
  border: 1px solid var(--line);
  overflow: hidden;
}

.job h3 {
  font-family: var(--display);
  font-weight: 700;
  font-size: 21px;
  letter-spacing: -0.03em;
}

.job p {
  color: var(--muted);
  font-size: 15px;
}

.job__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
}

.tag {
  font-family: var(--mono);
  font-size: 11px;
  padding: 4px 9px;
  border-radius: 999px;
  background: var(--paper);
  border: 1px solid var(--line);
  color: var(--muted);
}

/* ── 순서가 있는 3단계 (번호가 실제 정보) ────────────────────── */
.steps {
  counter-reset: step;
  display: grid;
  gap: 0;
  margin-top: 40px;
}

.step {
  counter-increment: step;
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 18px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
  align-items: start;
}

.step:last-child {
  border-bottom: 1px solid var(--line);
}

.step::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--mono);
  font-size: 13px;
  color: var(--eraser);
  padding-top: 3px;
}

.step h3 {
  font-size: 18px;
  font-weight: 700;
}

.step p {
  color: var(--muted);
  font-size: 15px;
  margin-top: 4px;
  max-width: 52ch;
}

/* ── 가격 ────────────────────────────────────────────────────── */
.price {
  background: var(--void);
  color: #fff;
  border-radius: 18px;
  padding: clamp(28px, 5vw, 52px);
  margin-top: 40px;
  display: grid;
  gap: 34px;
  grid-template-columns: 1fr;
}

@media (min-width: 860px) {
  .price {
    grid-template-columns: 0.85fr 1fr;
    align-items: center;
  }
}

.price .eyebrow {
  color: #7d858e;
}

.price__num {
  font-family: var(--mono);
  font-size: clamp(56px, 10vw, 88px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.05em;
  margin-top: 14px;
}

.price__num small {
  font-size: 0.28em;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: #8b939c;
  margin-left: 8px;
}

.price__desc {
  margin-top: 18px;
  color: #9aa2ab;
  max-width: 30ch;
  font-size: 15px;
}

.packs {
  display: grid;
  gap: 10px;
}

.pack {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  border: 1px solid var(--line-dark);
  border-radius: 12px;
  background: #12151a;
}

.pack__n {
  font-family: var(--mono);
  font-size: 17px;
  font-weight: 600;
}

.pack__n em {
  font-style: normal;
  color: #7d858e;
  font-size: 13px;
  margin-left: 6px;
}

.pack__won {
  font-family: var(--mono);
  font-size: 15px;
  color: #cfd5dc;
  margin-left: auto;
}

.pack .btn {
  height: 36px;
  padding: 0 14px;
  font-size: 13px;
}

.price__fine {
  font-family: var(--mono);
  font-size: 11px;
  color: #6e767f;
  letter-spacing: 0.04em;
}

/* ── FAQ ─────────────────────────────────────────────────────── */
.faq {
  margin-top: 36px;
  border-top: 1px solid var(--line);
}

.faq details {
  border-bottom: 1px solid var(--line);
}

.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 18px 0;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

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

.faq summary::after {
  content: "+";
  font-family: var(--mono);
  color: var(--eraser);
}

.faq details[open] summary::after {
  content: "–";
}

.faq p {
  padding: 0 0 18px;
  color: var(--muted);
  font-size: 15px;
  max-width: 62ch;
}

/* ── 푸터 ────────────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--line);
  padding: 34px 0 54px;
}

.footer__in {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--muted);
}

.footer__strip {
  height: 10px;
  margin-bottom: 26px;
  border-radius: 3px;
}