/* Forfex 웹사이트 — 앱의 다크 테마 토큰 + 어두운 히어로 랜딩 레이아웃 */

:root {
  --bg: #121211;
  --bg-deep: #0b0b0a;
  --card: #1c1c1a;
  --raised: #262624;
  --ink: #f2f1ed;
  --ink-2: #b9b8b2;
  --ink-3: #7c7b76;
  --line: #2c2c29;
  --track: #2a2a27;
  --tick: #55554f;
  --green: #12c286;
  --green-deep: #0fa974;
  --green-soft: rgba(18, 194, 134, 0.14);
  --green-line: rgba(18, 194, 134, 0.38);
  --orange: #ff6a14;
  --yellow: #f5c21b;
  --radius: 22px;
  --font: "Pretendard", "Inter", "Segoe UI", "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  word-break: keep-all;
}

a {
  color: inherit;
}

h1,
h2,
h3,
p {
  margin: 0;
}

.wrap {
  width: min(1180px, 100% - 32px);
  margin: 0 auto;
}

/* ── 상단 바 ── */

.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(18, 18, 17, 0.9);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.nav .wrap {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: 72px;
}

.brand {
  /* 로고 크기만큼만 눌리게 (칸 전체로 늘어나지 않게) */
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand img {
  width: 28px;
  height: 28px;
}

.nav-links {
  display: flex;
  gap: 4px;
}

.nav-links a {
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-2);
  text-decoration: none;
  transition: color 0.15s;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--ink);
}

.nav-actions {
  justify-self: end;
  display: flex;
  gap: 10px;
}

/* ── 버튼 ── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 12px;
  border: 1px solid transparent;
  font: inherit;
  font-weight: 700;
  font-size: 16px;
  text-decoration: none;
  cursor: pointer;
  transition:
    background 0.15s,
    border-color 0.15s,
    transform 0.15s;
}

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

.btn-sm {
  padding: 9px 16px;
  font-size: 14px;
  border-radius: 10px;
}

.btn-primary {
  position: relative;
  isolation: isolate;
  background: var(--green);
  color: #06261a;
  box-shadow: 0 0 0 1px rgba(18, 194, 134, 0.4);
}

/* 버튼 뒤에서 은은하게 숨 쉬는 빛. 한 번 그린 빛을 투명도·크기만 바꿔 움직여서 가볍다. */
.btn-primary::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: -2px -6px -10px;
  border-radius: inherit;
  background: rgba(18, 194, 134, 0.55);
  filter: blur(14px);
  opacity: 0.55;
  animation: btn-glow 3.2s ease-in-out infinite;
}

.btn-primary[aria-disabled="true"]::before {
  display: none;
}

@keyframes btn-glow {
  0%,
  100% {
    opacity: 0.45;
    transform: translateY(2px) scale(0.92);
  }
  50% {
    opacity: 0.9;
    transform: translateY(5px) scale(1.06);
  }
}

.btn-primary:hover {
  background: #2bd197;
}

.btn-outline {
  background: rgba(255, 255, 255, 0.02);
  border-color: rgba(255, 255, 255, 0.22);
  color: var(--ink);
}

.btn-outline:hover {
  border-color: rgba(255, 255, 255, 0.45);
  background: rgba(255, 255, 255, 0.05);
}

.btn[aria-disabled="true"] {
  opacity: 0.6;
  cursor: default;
  pointer-events: none;
  box-shadow: none;
}

/* ── 히어로 ── */

.hero {
  position: relative;
  min-height: min(760px, 92vh);
  display: grid;
  place-items: center;
  margin-top: -72px;
  padding: 144px 0 96px;
  text-align: center;
}

/* ── 페이지 전체 배경: 스크롤해도 뒤에 고정되어 화면을 채운다 ──
   성능: 격자는 SVG 타일을 한 번만 그리고 transform 으로만 움직인다(다시 그리기 없음).
   마스크는 고정 1장, 스크롤 효과는 투명도·확대(site.js가 직접 지정)만 바꾼다. */

.backdrop {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

/* 맨 위에서는 가깝게(확대), 스크롤하면 멀어진다 */
.backdrop-zoom {
  position: absolute;
  inset: 0;
  transform: scale(1.22);
  transform-origin: 50% 75%;
}

/* 원근감 있게 깔린 프레임 격자 (초록 칸 = 키프레임, 주황 선 = 재생 위치) */
.backdrop-plane {
  position: absolute;
  left: -30%;
  right: -30%;
  top: 36vh;
  height: 140vh;
  overflow: hidden;
  transform: perspective(900px) rotateX(60deg);
  transform-origin: top center;
  -webkit-mask-image: linear-gradient(180deg, transparent 0%, transparent 6%, #000 34%, #000 55%, transparent 92%);
  mask-image: linear-gradient(180deg, transparent 0%, transparent 6%, #000 34%, #000 55%, transparent 92%);
  opacity: 0.55;
}

/* 가로(재생 방향)로 흐르는 층과 세로(다가오는 방향)로 흐르는 층. 한 타일만큼 움직이면 처음과 같아진다. */
.plane-x,
.plane-y {
  position: absolute;
  will-change: transform;
}

.plane-x {
  top: 0;
  bottom: 0;
  left: 0;
  width: calc(100% + 528px);
  animation: plane-x 14s linear infinite;
}

.plane-y {
  left: 0;
  right: 0;
  top: -58px;
  height: calc(100% + 58px);
  background: url("/plane-tile.svg") repeat;
  animation: plane-y 2.6s linear infinite;
}

.plane-head {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  margin-left: -1px;
  background: var(--orange);
}

@keyframes plane-x {
  to {
    transform: translate3d(-528px, 0, 0);
  }
}

@keyframes plane-y {
  to {
    transform: translate3d(0, 58px, 0);
  }
}

/* 왼쪽 위 빛 번짐 + 가장자리 어둡게 (정지 이미지) */
.backdrop::before,
.backdrop::after {
  content: "";
  position: absolute;
  inset: 0;
}

.backdrop::before {
  background:
    radial-gradient(55% 50% at 8% 0%, rgba(18, 194, 134, 0.22), transparent 70%),
    radial-gradient(40% 40% at 95% 8%, rgba(255, 106, 20, 0.07), transparent 70%);
}

.backdrop::after {
  background:
    radial-gradient(60% 45% at 50% 40%, rgba(18, 18, 17, 0.4), transparent 100%),
    radial-gradient(90% 80% at 50% 50%, transparent 40%, rgba(11, 11, 10, 0.75) 100%);
}

/* 본문으로 내려갈수록 한 겹 더 어둡게 (투명도만 바뀐다) */
.backdrop-dim {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: rgba(11, 11, 10, 0.5);
  opacity: 0;
}

.hero-inner {
  position: relative;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  border-radius: 999px;
  background: var(--green-soft);
  border: 1px solid var(--green-line);
  color: var(--green);
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 26px;
}

.hero h1 {
  font-size: clamp(40px, 7.4vw, 84px);
  line-height: 1.08;
  letter-spacing: -0.04em;
  font-weight: 800;
}

.hero h1 em {
  font-style: normal;
  color: var(--green);
}

.hero .lead {
  max-width: 640px;
  margin: 24px auto 0;
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.55;
  color: var(--ink-2);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 36px;
}

.hero-note {
  margin-top: 18px;
  font-size: 14px;
  color: var(--ink-3);
}

/* ── 통계 띠 ── */

.stats {
  background: rgba(11, 11, 10, 0.82);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 44px 0;
}

.stats .wrap {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  text-align: center;
}

.stat strong {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.stat strong svg {
  color: var(--green);
  flex: none;
}

.stat span {
  display: block;
  margin-top: 6px;
  color: var(--ink-3);
  font-size: 15px;
}

/* ── 섹션 ── */

section {
  padding: 96px 0;
}

.section-head {
  max-width: 680px;
  margin: 0 auto 44px;
  text-align: center;
}

.kicker {
  display: block;
  margin-bottom: 12px;
  color: var(--green);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.section-head h2 {
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.2;
  letter-spacing: -0.03em;
  font-weight: 800;
}

.section-head h2 em {
  font-style: normal;
  color: var(--green);
}

.section-head p {
  margin-top: 14px;
  color: var(--ink-2);
  font-size: 17px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.card {
  padding: 30px;
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid var(--line);
  transition:
    border-color 0.2s,
    transform 0.2s;
}

.grid .card:hover {
  border-color: var(--green-line);
  transform: translateY(-2px);
}

.card .icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  background: var(--green-soft);
  color: var(--green);
  margin-bottom: 20px;
}

.card h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 8px;
}

.card p {
  font-size: 15px;
  color: var(--ink-2);
}

/* ── 왜 Forfex ── */

#why {
  padding-bottom: 32px;
}

.size-compare {
  max-width: 820px;
  margin: 0 auto 28px;
  padding: 26px 30px;
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid var(--line);
}

.size-row {
  display: grid;
  grid-template-columns: 170px 1fr 84px;
  align-items: center;
  gap: 16px;
}

.size-row + .size-row {
  margin-top: 14px;
}

.size-label {
  font-size: 14px;
  color: var(--ink-2);
}

.size-bar {
  height: 14px;
  border-radius: 7px;
  background: var(--track);
  overflow: hidden;
}

.size-bar i {
  display: block;
  height: 100%;
  border-radius: 7px;
  background: var(--tick);
}

.size-row.cut .size-bar i {
  width: var(--to);
  transition: width 1.2s cubic-bezier(0.65, 0, 0.35, 1);
  min-width: 14px;
  background: var(--green);
  box-shadow: 0 0 16px rgba(18, 194, 134, 0.6);
}

.size-row strong {
  text-align: right;
  font-size: 16px;
  font-variant-numeric: tabular-nums;
}

.size-row.cut strong {
  color: var(--green);
}

.size-note {
  margin-top: 16px;
  font-size: 13px;
  color: var(--ink-3);
}

.personas {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.persona-who {
  display: block;
  margin-bottom: 4px;
  font-size: 13px;
  font-weight: 700;
  color: var(--green);
}

.persona h3 {
  font-size: 21px;
  margin-bottom: 16px;
}

.persona .pain,
.persona .gain {
  position: relative;
  padding-left: 28px;
}

.persona .pain::before,
.persona .gain::before {
  position: absolute;
  left: 0;
  top: 1px;
  display: grid;
  place-items: center;
  width: 19px;
  height: 19px;
  border-radius: 50%;
  font-size: 11px;
  font-weight: 800;
}

.persona .pain {
  color: var(--ink-3);
}

.persona .pain::before {
  content: "✕";
  background: rgba(255, 106, 20, 0.16);
  color: var(--orange);
}

.persona .gain {
  margin-top: 12px;
  color: var(--ink);
}

.persona .gain::before {
  content: "✓";
  background: var(--green-soft);
  color: var(--green);
}

.persona .gain b {
  color: var(--green);
}

/* ── 미리보기 섹션 (본문은 demo.css) ── */

/* 스크롤하면 섹션 하나가 화면을 채우고, 그 섹션 시작점에 살짝 붙는다. */
html {
  scroll-snap-type: y proximity;
  scroll-padding-top: 72px;
}

.hero,
main > section {
  scroll-snap-align: start;
}

main > section {
  min-height: calc(100vh - 72px);
  min-height: calc(100svh - 72px);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* 섹션이 화면에 들어올 때 내용이 아래에서 떠오른다. (JS가 켜졌을 때만) */
.motion main > section > .wrap {
  opacity: 0;
  transform: translateY(36px);
  transition:
    opacity 0.7s ease,
    transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1);
}

.motion main > section.in-view > .wrap {
  opacity: 1;
  transform: none;
}

/* 용량 비교 게이지: 처음엔 원본만큼 차 있다가 보이고 0.5초 뒤 줄어든다. */
.motion .size-compare:not(.shrunk) .size-row.cut .size-bar i {
  width: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-snap-type: none;
  }

  .motion main > section > .wrap,
  .size-row.cut .size-bar i {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ── 동작 방식 ── */

.steps {
  counter-reset: step;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.steps li {
  counter-increment: step;
}

.steps li::before {
  content: "0" counter(step);
  display: block;
  margin-bottom: 18px;
  color: var(--green);
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.04em;
}

.explain {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 16px;
  margin-top: 16px;
}

.explain .card > p {
  margin-top: 8px;
}

.gop {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 14px;
}

.frames {
  display: flex;
  gap: 4px;
}

.frames span {
  flex: 1;
  height: 44px;
  border-radius: 7px;
  background: var(--track);
  display: grid;
  place-items: center;
  font-size: 12px;
  font-weight: 700;
  color: var(--ink-3);
}

.frames span.i {
  background: var(--green);
  color: #06261a;
}

.frames span.cut {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}

.legend {
  font-size: 14px;
  color: var(--ink-3);
}

/* ── FAQ ── */

.faq {
  max-width: 820px;
  margin: 0 auto;
  display: grid;
  gap: 10px;
}

.faq details {
  padding: 22px 26px;
  border-radius: 18px;
  background: var(--card);
  border: 1px solid var(--line);
}

.faq details[open] {
  border-color: var(--green-line);
}

.faq summary {
  cursor: pointer;
  font-weight: 700;
  font-size: 17px;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

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

.faq summary::after {
  content: "+";
  color: var(--green);
  font-weight: 400;
  font-size: 22px;
  line-height: 1;
}

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

.faq details p {
  margin-top: 12px;
  color: var(--ink-2);
  font-size: 15px;
}

.faq a {
  color: var(--green);
}

/* ── 다운로드 ── */

.download {
  position: relative;
  overflow: hidden;
  text-align: center;
  padding: 72px 28px;
  border-radius: 32px;
  background:
    radial-gradient(70% 90% at 15% 0%, rgba(18, 194, 134, 0.35), transparent 70%),
    radial-gradient(60% 80% at 100% 100%, rgba(255, 106, 20, 0.12), transparent 70%),
    var(--card);
  border: 1px solid var(--green-line);
}

.download h2 {
  font-size: clamp(30px, 4.4vw, 48px);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.download p {
  margin-top: 12px;
  color: var(--ink-2);
  font-size: 17px;
}

.download .btn {
  margin-top: 30px;
}

.download .req {
  margin-top: 16px;
  font-size: 14px;
  color: var(--ink-3);
}

.beta-badge {
  margin-bottom: 18px;
  letter-spacing: 0.12em;
  font-size: 12px;
}

/* ── 신청 창 ── */

.dialog {
  width: min(560px, calc(100% - 32px));
  max-height: calc(100dvh - 32px);
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--card);
  color: var(--ink);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55);
}

.dialog::backdrop {
  background: rgba(5, 5, 5, 0.7);
}

.dialog[open] {
  animation: dialog-in 0.22s ease-out;
}

@keyframes dialog-in {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.98);
  }
}

.dialog-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 24px 24px 4px;
}

.dialog-head h2 {
  margin-top: 4px;
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.dialog-close {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--ink-2);
  cursor: pointer;
}

.dialog-close:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--ink);
}

.dialog-body {
  display: grid;
  gap: 16px;
  padding: 16px 24px 24px;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.field {
  display: grid;
  gap: 8px;
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.field > span,
.field > legend {
  padding: 0;
  font-size: 14px;
  font-weight: 700;
}

.field small {
  margin-left: 4px;
  font-weight: 500;
  color: var(--ink-3);
}

.field input,
.field textarea {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--bg);
  color: var(--ink);
  font: inherit;
  font-size: 15px;
}

.field textarea {
  resize: vertical;
  min-height: 96px;
  line-height: 1.55;
}

.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--green);
}

.choice {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.choice label {
  position: relative;
  cursor: pointer;
}

.choice input {
  position: absolute;
  opacity: 0;
}

.choice span {
  display: block;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--bg);
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-2);
  text-align: center;
}

.choice input:checked + span {
  border-color: var(--green);
  background: var(--green-soft);
  color: var(--ink);
}

.choice input:focus-visible + span {
  outline: 2px solid var(--green);
  outline-offset: 2px;
}

/* 봇을 거르는 숨은 칸 */
.hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.consent {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--bg-deep);
  font-size: 13px;
  color: var(--ink-2);
}

.consent strong {
  color: var(--ink);
}

.consent ul {
  margin: 8px 0 0;
  padding-left: 18px;
  line-height: 1.65;
}

.consent p {
  margin-top: 8px;
  color: var(--ink-3);
}

.consent a {
  color: var(--green);
}

.check {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  font-weight: 700;
  color: var(--ink);
  cursor: pointer;
}

.check input {
  width: 16px;
  height: 16px;
  accent-color: var(--green);
}

.form-error {
  font-size: 14px;
  color: var(--orange);
}

.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.dialog-actions .btn {
  padding: 12px 22px;
  font-size: 15px;
}

.dialog-done {
  justify-items: center;
  padding-top: 28px;
  text-align: center;
}

.done-icon {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--green-soft);
  color: var(--green);
}

.dialog-done h3 {
  font-size: 22px;
  font-weight: 800;
}

.dialog-done p {
  color: var(--ink-2);
}

.done-id {
  font-family: "Cascadia Mono", Consolas, monospace;
  font-size: 13px;
  color: var(--ink-3) !important;
}

@media (max-width: 560px) {
  .field-row,
  .choice {
    grid-template-columns: 1fr;
  }
}

/* ── 문서 페이지 ── */

.doc {
  padding: 56px 0 88px;
}

.doc article {
  max-width: 780px;
  margin: 0 auto;
  padding: 44px;
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid var(--line);
}

.doc h1 {
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.doc .meta {
  margin-top: 8px;
  color: var(--ink-3);
  font-size: 14px;
}

.doc h2 {
  margin-top: 38px;
  font-size: 20px;
  font-weight: 700;
}

.doc h3 {
  margin-top: 24px;
  font-size: 17px;
  font-weight: 700;
}

.doc p,
.doc li {
  color: var(--ink-2);
  font-size: 15px;
}

.doc p {
  margin-top: 12px;
}

.doc a {
  color: var(--green);
}

.doc ul {
  margin: 12px 0 0;
  padding-left: 20px;
}

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

.doc table {
  width: 100%;
  margin-top: 14px;
  border-collapse: collapse;
  font-size: 14px;
}

.doc th,
.doc td {
  padding: 11px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.doc th {
  color: var(--ink-3);
  font-weight: 600;
}

.doc code {
  font-family: "Cascadia Mono", Consolas, monospace;
  font-size: 13px;
  padding: 1px 6px;
  border-radius: 6px;
  background: var(--track);
}

/* ── 노트 ── */

.notes {
  padding: 64px 0 88px;
}

.note-list {
  max-width: 880px;
  margin: 0 auto;
  padding: 0;
  list-style: none;
}

.note {
  position: relative;
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 24px;
  padding-bottom: 28px;
  scroll-margin-top: 96px;
}

/* 날짜 옆 세로선과 점 */
.note::before {
  content: "";
  position: absolute;
  left: 131px;
  top: 10px;
  bottom: 0;
  width: 2px;
  background: var(--line);
}

.note:last-child::before {
  display: none;
}

.note time {
  position: relative;
  padding-top: 26px;
  text-align: right;
  font-size: 14px;
  font-weight: 700;
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
}

.note time::after {
  content: "";
  position: absolute;
  right: -17px;
  top: 32px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 4px var(--bg);
}

.note-card {
  padding: 28px 32px;
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid var(--line);
}

.note:target .note-card {
  border-color: var(--green-line);
}

.note-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.tag {
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--track);
  color: var(--ink-2);
  font-size: 12px;
  font-weight: 700;
}

.tag-update {
  background: var(--green-soft);
  color: var(--green);
}

.tag-dev {
  background: rgba(245, 194, 27, 0.14);
  color: var(--yellow);
}

.note-card h3 {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.note-card h4 {
  margin: 22px 0 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--green);
}

.note-card p,
.note-card li {
  color: var(--ink-2);
  font-size: 15px;
}

.note-card p {
  margin-top: 12px;
}

.note-card ul {
  margin: 8px 0 0;
  padding-left: 20px;
}

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

.note-card b {
  color: var(--ink);
}

/* ── 하단 ── */

footer {
  padding: 40px 0 56px;
  color: var(--ink-3);
  font-size: 14px;
}

footer .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid var(--line);
  padding-top: 28px;
}

footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

footer a {
  text-decoration: none;
}

footer a:hover {
  color: var(--ink);
}

/* ── 좁은 화면 ── */

@media (max-width: 900px) {
  .nav .wrap {
    grid-template-columns: 1fr auto;
  }

  .nav-links {
    display: none;
  }

  .nav-actions .btn-outline {
    display: none;
  }

  .grid,
  .steps,
  .explain,
  .personas {
    grid-template-columns: 1fr;
  }

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

  .note::before,
  .note time::after {
    display: none;
  }

  .note time {
    padding-top: 0;
    text-align: left;
  }

  .note-card {
    padding: 24px 20px;
  }

  .size-row {
    grid-template-columns: 1fr auto;
  }

  .size-bar {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  .stats .wrap {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  section {
    padding: 64px 0;
  }

  .doc article {
    padding: 28px 20px;
  }

  .doc table {
    display: block;
    overflow-x: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .btn,
  .card {
    transition: none;
  }

  .plane-x,
  .plane-y,
  .btn-primary::before {
    animation: none;
  }
}

.notes-empty {
  text-align: center;
  color: var(--ink-3);
}