/* 기능 소개 공개 페이지(/features/). 인트로와 같은 어두운 톤을 쓴다. */
:root {
  color-scheme: dark;
  --pf-bg: #000;
  --pf-panel: rgba(9, 16, 36, .78);
  --pf-line: rgba(148, 184, 255, .16);
  --pf-text: #e9f1ff;
  --pf-muted: rgba(208, 226, 255, .72);
  --pf-dim: rgba(208, 226, 255, .5);
  --pf-teal: #5eead4;
  --pf-sky: #38bdf8;
  --pf-violet: #a78bfa;
  --pf-radius: 18px;
  --pf-gutter: clamp(16px, 4vw, 48px);
  --pf-wordmark: linear-gradient(102deg, #d9f4ff 4%, #afd9ff 28%, #9cbcff 52%, #baa9f6 76%, #cceaff 98%);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

.pf-page {
  margin: 0;
  background: var(--pf-bg);
  color: var(--pf-text);
  font-family: 'Pretendard', -apple-system, 'Noto Sans KR', sans-serif;
  font-size: 15px;
  line-height: 1.6;
  word-break: keep-all;
  overflow-wrap: anywhere;
}
.pf-page a { color: inherit; }
.pf-page h1, .pf-page h2, .pf-page h3 { margin: 0; text-wrap: balance; }

.pf-eyebrow {
  margin: 0;
  font-family: 'Space Grotesk', 'Pretendard', sans-serif;
  font-size: .74rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--pf-dim);
}

/* 상단 */
.pf-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(0, 0, 0, .72);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--pf-line);
}
.pf-header__inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 12px var(--pf-gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.pf-brand {
  font-family: 'Space Grotesk', 'Pretendard', sans-serif;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  text-decoration: none;
  background: var(--pf-wordmark);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.pf-nav { display: flex; gap: 4px 14px; flex-wrap: wrap; font-size: .86rem; }
.pf-nav a { color: var(--pf-muted); text-decoration: none; padding: 4px 0; border-bottom: 1px solid transparent; }
.pf-nav a:hover, .pf-nav a.is-active { color: var(--pf-text); border-bottom-color: var(--pf-teal); }

/* 히어로 */
.pf-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(56px, 9vh, 96px) var(--pf-gutter) clamp(40px, 6vh, 64px);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  background:
    radial-gradient(circle at 68% 30%, rgba(30, 64, 175, .38) 0%, rgba(76, 29, 149, .18) 18%, transparent 42%),
    radial-gradient(ellipse 90% 70% at 46% 30%, #07152d 0%, #030714 48%, #000 100%);
}
.pf-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(115deg, transparent 0 38px, rgba(125, 211, 252, .035) 38px 39px);
  pointer-events: none;
}
.pf-hero > * { position: relative; }
.pf-hero__title {
  max-width: 26ch;
  font-size: clamp(1.5rem, 3.4vw, 2.5rem);
  font-weight: 700;
  color: #f3f7ff;
}
.pf-hero__lead { margin: 0; max-width: 52ch; color: var(--pf-muted); }

.pf-actions { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
.pf-actions--center { margin-top: 34px; }
.pf-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-width: 180px;
  padding: 12px 24px;
  border-radius: 999px;
  border: 0;
  cursor: pointer;
  font: inherit;
  font-weight: 600;
  font-size: .95rem;
  color: #f1f7ff;
  text-decoration: none;
  background: linear-gradient(165deg, rgba(15, 23, 42, .72), rgba(15, 23, 42, .42));
  box-shadow: 0 0 0 1px rgba(148, 184, 255, .22) inset, 0 12px 34px rgba(4, 12, 40, .45);
  transition: transform .25s, box-shadow .35s;
}
.pf-btn:hover { transform: translateY(-2px); box-shadow: 0 0 0 1px rgba(186, 230, 253, .4) inset, 0 16px 44px rgba(20, 100, 184, .35); }
.pf-btn:focus-visible { outline: 2px solid var(--pf-teal); outline-offset: 3px; }
.pf-btn--demo { color: #effffb; font-weight: 700; background: linear-gradient(145deg, rgba(16, 150, 120, .78), rgba(20, 120, 140, .72)); }
.pf-btn--ghost { background: transparent; box-shadow: 0 0 0 1px rgba(148, 184, 255, .3) inset; }

/* 섹션 */
.pf-main { max-width: 1180px; margin: 0 auto; }
.pf-section { padding: 56px var(--pf-gutter); }
.pf-section__head { display: flex; flex-direction: column; gap: 8px; margin-bottom: 26px; }
.pf-section__head h2 { font-size: clamp(1.4rem, 3vw, 2rem); font-weight: 700; }
.pf-section__head p { margin: 0; color: var(--pf-muted); max-width: 60ch; }

/* 카드 */
.pf-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 18px; }
.pf-card {
  display: flex;
  flex-direction: column;
  background: var(--pf-panel);
  border: 1px solid var(--pf-line);
  border-radius: var(--pf-radius);
  overflow: hidden;
  transition: transform .2s, border-color .2s;
}
.pf-card:hover { transform: translateY(-3px); border-color: rgba(94, 234, 212, .45); }
.pf-card__open {
  display: flex;
  flex-direction: column;
  width: 100%;
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
  flex: 1;
}
.pf-card__open:focus-visible { outline: 2px solid var(--pf-teal); outline-offset: -2px; }
.pf-card__visual {
  position: relative;
  aspect-ratio: 16 / 10;
  max-width: 100%;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
  padding: 0;
  border-bottom: 1px solid var(--pf-line);
  background:
    linear-gradient(135deg, rgba(56, 189, 248, .14), rgba(167, 139, 250, .14)),
    repeating-linear-gradient(0deg, transparent 0 22px, rgba(255, 255, 255, .04) 22px 23px);
}
.pf-card__visual--transfer { background-image: linear-gradient(135deg, rgba(56, 189, 248, .2), rgba(129, 140, 248, .16)), repeating-linear-gradient(0deg, transparent 0 22px, rgba(255, 255, 255, .04) 22px 23px); }
.pf-card__visual--network { background-image: linear-gradient(135deg, rgba(167, 139, 250, .2), rgba(56, 189, 248, .12)), repeating-linear-gradient(0deg, transparent 0 22px, rgba(255, 255, 255, .04) 22px 23px); }
.pf-card__visual--receipt, .pf-card__visual--photo { background-image: linear-gradient(135deg, rgba(94, 234, 212, .18), rgba(56, 189, 248, .12)), repeating-linear-gradient(0deg, transparent 0 22px, rgba(255, 255, 255, .04) 22px 23px); }
.pf-card__visual--hometax, .pf-card__visual--invoice { background-image: linear-gradient(135deg, rgba(129, 140, 248, .18), rgba(94, 234, 212, .12)), repeating-linear-gradient(0deg, transparent 0 22px, rgba(255, 255, 255, .04) 22px 23px); }
.pf-card__visual--customer { background-image: linear-gradient(135deg, rgba(134, 239, 172, .16), rgba(56, 189, 248, .14)), repeating-linear-gradient(0deg, transparent 0 22px, rgba(255, 255, 255, .04) 22px 23px); }
.pf-card__shot {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top left;
  display: block;
  transition: transform .35s ease;
}
.pf-card:hover .pf-card__shot { transform: scale(1.03); }
@media (prefers-reduced-motion: reduce) { .pf-card:hover .pf-card__shot { transform: none; } }
.pf-card__icon {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  fill: none;
  stroke: #cfe6ff;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  filter: drop-shadow(0 0 12px rgba(125, 211, 252, .35));
}
.pf-card__screen {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 10px 12px;
  padding: 5px 11px;
  border-radius: 999px;
  background: rgba(3, 8, 24, .78);
  border: 1px solid rgba(148, 184, 255, .3);
  font-size: .78rem;
  color: #cfe6ff;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.pf-card__body { display: flex; flex-direction: column; gap: 10px; padding: 18px 18px 12px; }
.pf-card__gone { margin: 0; font-size: .78rem; color: var(--pf-dim); display: flex; gap: 6px; flex-wrap: wrap; }
.pf-card__gone s { color: rgba(255, 160, 160, .78); }
.pf-card__title { font-size: 1.08rem; font-weight: 700; line-height: 1.4; color: #f3f7ff; }
.pf-card__summary { margin: 0; color: var(--pf-muted); font-size: .9rem; }
.pf-card__foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 4px 18px 18px;
}
.pf-plan {
  font-family: 'Space Grotesk', 'Pretendard', sans-serif;
  font-size: .72rem;
  letter-spacing: .08em;
  padding: 3px 9px;
  border-radius: 6px;
  border: 1px solid rgba(148, 184, 255, .35);
  color: #cfe0ff;
  white-space: nowrap;
}
.pf-plan small { font-family: 'Pretendard', sans-serif; letter-spacing: 0; font-size: .7rem; color: var(--pf-dim); }
.pf-plan--plus { border-color: rgba(94, 234, 212, .5); color: #bffcef; }
.pf-plan--ultra { border-color: rgba(167, 139, 250, .5); color: #e2d9ff; }
.pf-cta {
  border: 0;
  background: none;
  padding: 0;
  font: inherit;
  font-size: .84rem;
  font-weight: 700;
  color: var(--pf-sky);
  cursor: pointer;
  text-decoration: none;
}
.pf-cta--demo { color: var(--pf-teal); }
.pf-cta--demo::after { content: " ↗"; }
.pf-cta:hover { text-decoration: underline; }
.pf-cta:focus-visible { outline: 2px solid var(--pf-teal); outline-offset: 3px; border-radius: 4px; }

/* 요금 */
.pf-plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 18px; }
.pf-plan-card {
  position: relative;
  background: var(--pf-panel);
  border: 1px solid var(--pf-line);
  border-radius: var(--pf-radius);
  padding: 26px 22px 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.pf-plan-card--plus { border-color: rgba(94, 234, 212, .45); }
.pf-plan-card--ultra { border-color: rgba(167, 139, 250, .45); }
.pf-plan-card__badge {
  position: absolute;
  top: -12px;
  left: 18px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: .74rem;
  font-weight: 700;
  background: #cfe0ff;
  color: #0b1a3a;
}
.pf-plan-card--plus .pf-plan-card__badge { background: var(--pf-teal); color: #062b25; }
.pf-plan-card--ultra .pf-plan-card__badge { background: #d9c9ff; color: #22104a; }
.pf-plan-card__name { margin: 0; font-family: 'Space Grotesk', 'Pretendard', sans-serif; font-size: 1.2rem; letter-spacing: .1em; }
.pf-plan-card__summary { margin: 0; color: var(--pf-muted); font-size: .9rem; }
.pf-plan-card__price { margin: 0; font-size: 1.1rem; font-variant-numeric: tabular-nums; }
.pf-plan-card__price strong { font-size: 2rem; font-weight: 700; line-height: 1.1; }
.pf-plan-card__price small { color: var(--pf-muted); }
.pf-plan-card ul { margin: 0; padding-left: 18px; color: var(--pf-muted); font-size: .9rem; display: flex; flex-direction: column; gap: 5px; }
.pf-plan-card__action {
  margin-top: auto;
  align-self: flex-start;
  padding: 9px 16px;
  border-radius: 999px;
  font-size: .86rem;
  font-weight: 700;
  text-decoration: none;
  color: #f4fdff;
  background: linear-gradient(145deg, rgba(30, 155, 196, .76), rgba(72, 76, 184, .7));
}
.pf-plan-card__action:hover { filter: brightness(1.1); }

/* 푸터 */
.pf-footer {
  max-width: 1180px;
  margin: 0 auto;
  padding: 36px var(--pf-gutter) 56px;
  border-top: 1px solid rgba(148, 184, 255, .12);
  color: var(--pf-dim);
  font-size: .78rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.pf-footer__links { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.pf-footer__links a { text-decoration: none; }
.pf-footer__links a:hover { color: var(--pf-text); }
.pf-footer__business { margin: 0; display: flex; gap: 6px 14px; justify-content: center; flex-wrap: wrap; }

/* 상세 창 */
.pf-dialog {
  border: 0;
  padding: 0;
  background: transparent;
  max-width: min(760px, calc(100vw - 32px));
  width: 100%;
  color: var(--pf-text);
}
.pf-dialog::backdrop { background: rgba(0, 0, 0, .66); backdrop-filter: blur(10px); }
.pf-dialog[open] { display: block; }
.pf-dialog__panel {
  position: relative;
  max-height: 88vh;
  overflow: auto;
  background: linear-gradient(165deg, rgba(15, 23, 42, .97), rgba(5, 10, 28, .99));
  border: 1px solid rgba(148, 184, 255, .28);
  border-radius: 22px;
  padding: 22px 22px 26px;
}
.pf-dialog__content { display: flex; flex-direction: column; gap: 14px; }
.pf-dialog__eyebrow { margin: 0; font-size: .8rem; color: var(--pf-dim); }
.pf-dialog__title { font-size: 1.25rem; font-weight: 700; padding-right: 60px; }
.pf-dialog__shot { display: block; width: 100%; height: auto; border-radius: 12px; border: 1px solid var(--pf-line); }
.pf-dialog__facts { margin: 0; padding-left: 18px; color: var(--pf-muted); display: flex; flex-direction: column; gap: 6px; font-size: .92rem; }
.pf-dialog__condition { margin: 0; font-size: .84rem; color: var(--pf-dim); border-top: 1px solid var(--pf-line); padding-top: 10px; }
.pf-dialog__foot { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; }
.pf-dialog__close {
  position: absolute;
  top: 14px;
  right: 14px;
  background: none;
  border: 1px solid rgba(148, 184, 255, .25);
  color: var(--pf-muted);
  font: inherit;
  font-size: .82rem;
  cursor: pointer;
  padding: 5px 12px;
  border-radius: 999px;
}
.pf-dialog__close:hover { color: var(--pf-text); border-color: rgba(186, 230, 253, .5); }
.pf-dialog__close:focus-visible { outline: 2px solid var(--pf-teal); outline-offset: 2px; }

/* 마지막(7번째) 카드는 넓은 화면에서 한 줄을 다 쓰는 가로형으로 둔다. */
@media (min-width: 960px) {
  .pf-card--wide { grid-column: 1 / -1; }
  .pf-card--wide .pf-card__open { flex-direction: row; align-items: stretch; }
  .pf-card--wide .pf-card__visual { flex: 0 0 52%; aspect-ratio: auto; border-bottom: 0; border-right: 1px solid var(--pf-line); }
  .pf-card--wide .pf-card__body { flex: 1; justify-content: center; padding: 26px 26px 12px; }
  .pf-card--wide .pf-card__title { font-size: 1.25rem; }
  .pf-card--wide .pf-card__foot { padding-left: 26px; }
}

@media (max-width: 560px) {
  .pf-hero { padding-top: 44px; }
}