/* cadence — 화면 규칙. 색·서체·간격·이징은 tokens.css 변수만 쓴다.
   폭 표(wireframe §8)가 정한 상한 안에서 크기를 잡았고, 출렁이는 글자는 최대 축값으로 잰 고정 폭 상자 안에 있다. */

/* ── 리셋 ─────────────────────────────────────────── */
:where(*, *::before, *::after) { box-sizing: border-box; }
:where(body, h1, h2, h3, p, ul, ol, dl, dd, figure, table) { margin: 0; }
:where(ul, ol) { padding: 0; list-style: none; }
:where(button) { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
:where(table) { border-collapse: collapse; }
:where(a) { color: inherit; }
[hidden] { display: none !important; }

html {
  background: var(--color-bg);
  color: var(--color-ink);
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: var(--spacing-6);
}
body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--text-body--line-height);
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  padding-bottom: calc(var(--spacing-band) + env(safe-area-inset-bottom));
}
@media (min-width: 1024px) {
  body { padding-bottom: 0; padding-left: var(--spacing-rail); }
}

:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 2px; }
.sr-only {
  position: absolute; inline-size: 1px; block-size: 1px; overflow: hidden;
  clip-path: inset(50%); white-space: nowrap;
}
.skip {
  position: fixed; left: var(--spacing-2); top: var(--spacing-2); z-index: 40;
  padding: var(--spacing-3) var(--spacing-4); background: var(--color-ink); color: var(--color-bg);
  border-radius: var(--radius-control); font-weight: 600; text-decoration: none;
  transform: translateY(-200%);
}
.skip:focus { transform: none; }

/* ── 공용 글자 ─────────────────────────────────────── */
.label {
  font-family: var(--font-display);
  /* wdth 50 은 13px 에서 획이 붙어 읽기 어렵다 — 라벨은 60(H1 과 같은 단)으로, NOTES 참고 */
  font-stretch: var(--font-stretch-h1);
  font-weight: var(--font-weight-label);
  font-size: var(--text-label);
  letter-spacing: var(--text-label--letter-spacing);
  line-height: 1.3;
  text-transform: uppercase;
  color: var(--color-muted);
}
.n {
  font-family: var(--font-display);
  font-stretch: var(--font-stretch-num);
  font-weight: var(--font-weight-num);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.accent { color: var(--color-accent); }
.num.plain { color: var(--color-ink); }
.num-l, .num-xl {
  font-family: var(--font-display);
  font-stretch: var(--font-stretch-num);
  font-weight: var(--font-weight-num);
  line-height: 1;
  white-space: nowrap;
}
.num-l { font-size: var(--text-num-l); }
.num-xl { font-size: var(--text-num-xl); }

/* 출렁이는 숫자 — 최대 축(wdth 125)으로 잰 폭 상자. 안의 글자가 늘었다 줄어도 이웃은 움직이지 않는다 */
.num-box {
  display: block;
  contain: layout paint;
  padding-block: 0.06em;
  font-family: var(--font-display);
  font-weight: var(--font-weight-num);
  line-height: 1;
  white-space: nowrap;
}
.num-box-xl { font-size: var(--text-num-xl); inline-size: 4.1em; }
.num-box-l { font-size: var(--text-num-l); inline-size: 4.1em; }
.num-box-price { display: inline-block; font-size: var(--text-num-xl); inline-size: 2.3em; }
.num {
  display: inline-block;
  font-stretch: var(--font-stretch-num);
  font-variant-numeric: tabular-nums;
  color: var(--color-accent);
}

.chip {
  display: inline-flex; align-items: center;
  padding: 0.125rem var(--spacing-3);
  border: 1px solid var(--color-ink);
  border-radius: var(--radius-control);
  font-size: var(--text-label);
  font-weight: 500;
  line-height: 1.5;
  white-space: nowrap;
  color: var(--color-ink);
}
.chip.off { visibility: hidden; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-block-size: 3rem;
  padding-inline: var(--spacing-6);
  background: var(--color-ink);
  color: var(--color-bg);
  border: 1px solid var(--color-ink);
  border-radius: var(--radius-control);
  font-weight: 600;
  font-size: var(--text-body);
  text-decoration: none;
  white-space: nowrap;
  transition: transform var(--duration-press) var(--ease-out), border-color var(--duration-hover) var(--ease-out);
}
.btn:active { transform: scale(0.98); }
.btn-line { background: var(--color-bg); color: var(--color-ink); border-color: var(--color-muted); }
@media (hover: hover) {
  .btn-line:hover { border-color: var(--color-ink); }
}
.link {
  display: inline-flex; align-items: center; gap: var(--spacing-2);
  min-block-size: var(--spacing-hit);
  font-weight: 600;
  text-decoration: none;
  text-underline-offset: 0.3em;
}
@media (hover: hover) {
  .link:hover { text-decoration: underline 1px; }
}
.demo { font-size: var(--text-small); color: var(--color-muted); }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--spacing-3) var(--spacing-5); }

/* ── 격자 ─────────────────────────────────────────── */
.wrap {
  inline-size: 100%;
  max-inline-size: calc(var(--spacing-container) + 2 * var(--spacing-8));
  margin-inline: auto;
  padding-inline: var(--spacing-4);
}
@media (min-width: 720px) {
  .wrap { padding-inline: var(--spacing-8); }
}
.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--spacing-4); }
.grid > * { grid-column: 1 / -1; min-inline-size: 0; }
.grid > .half { grid-column: span 1; }
@media (min-width: 720px) {
  .grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .grid > *, .grid > .half { grid-column: span var(--md, 6); }
}
@media (min-width: 1024px) {
  .grid { grid-template-columns: repeat(12, minmax(0, 1fr)); }
  .grid > *, .grid > .half { grid-column: span var(--lg, 12); }
}
@media (min-width: 1280px) {
  .grid > *, .grid > .half { grid-column: span var(--xl, var(--lg, 12)); }
}
/* 새 줄에서 시작하는 칸 — 시작 열만 바꾸면 span 이 풀리므로 줄 전체를 다시 적는다 */
@media (min-width: 720px) {
  .grid > .nl { grid-column: 1 / span var(--md, 6); }
}
@media (min-width: 1024px) {
  .grid > .nl { grid-column: 1 / span var(--lg, 12); }
}
@media (min-width: 1280px) {
  .grid > .nl { grid-column: 1 / span var(--xl, var(--lg, 12)); }
}

.tile {
  position: relative;
  background: var(--color-tile);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-tile);
  padding: var(--spacing-5);
  transition: border-color var(--duration-hover) var(--ease-out);
}
@media (hover: hover) {
  .tile:hover { border-color: var(--color-muted); }
}
@media (min-width: 720px) {
  .tile { padding: var(--spacing-8); }
}
@media (min-width: 1024px) {
  .tile { padding: var(--spacing-10); }
}

.sec { margin-top: var(--spacing-section); }
.head { align-self: start; padding-block: var(--spacing-2); }
.h-sec {
  margin-top: var(--spacing-3);
  font-family: var(--font-display);
  font-weight: var(--font-weight-display);
  font-stretch: var(--font-stretch-title);
  font-size: var(--text-display-l);
  line-height: var(--text-display-l--line-height);
  letter-spacing: -0.01em;
}
.head-p { margin-top: var(--spacing-4); max-inline-size: 34ch; color: var(--color-muted); }
@media (min-width: 1024px) {
  .head-wide { display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: var(--spacing-4) var(--spacing-8); }
  .head-wide .label { flex-basis: 100%; }
  .head-wide .h-sec { margin-top: 0; }
  .br-narrow { display: none; }
}

/* 구간 제목 — 들어올 때 한 번, 폭 50→70 */
.h-sec.pre { opacity: 0; font-stretch: var(--font-stretch-label); }
.h-sec.in { animation: reveal var(--duration-enter) var(--ease-out) both; }
@keyframes reveal {
  from { opacity: 0; font-stretch: var(--font-stretch-label); }
}

/* ── B0 세로 레일(≥1024) ───────────────────────────── */
.rail { display: none; }
@media (min-width: 1024px) {
  .rail {
    position: fixed; left: 0; top: 0; z-index: 20;
    display: flex; flex-direction: column; align-items: center; justify-content: space-between;
    inline-size: var(--spacing-rail);
    block-size: 100svh;
    padding-block: var(--spacing-6);
    background: var(--color-bg);
    border-right: 1px solid var(--color-line);
  }
}
.rail-mark {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  padding: var(--spacing-3);
  font-family: var(--font-display);
  font-stretch: var(--font-stretch-h1);
  font-weight: var(--font-weight-display);
  font-size: var(--text-lead);
  line-height: 1;
  text-decoration: none;
}
.rail-nav ol { display: flex; flex-direction: column; gap: var(--spacing-1); }
.rail-nav a {
  position: relative;
  display: grid; place-items: center;
  inline-size: var(--spacing-hit); block-size: var(--spacing-hit);
  contain: layout;
  color: var(--color-muted);
  text-decoration: none;
}
.rail-num {
  font-family: var(--font-display);
  font-weight: var(--font-weight-display);
  font-size: var(--text-body);
  font-stretch: var(--font-stretch-label);
  line-height: 1;
  transition: font-stretch var(--duration-stretch) var(--ease-out), color var(--duration-hover) var(--ease-out);
}
.rail-nav a::before {
  content: "";
  position: absolute; left: 0; top: 50%;
  inline-size: 6px; block-size: 6px; margin-top: -3px;
  border-radius: 50%;
  background: var(--color-accent);
  opacity: 0;
  transition: opacity var(--duration-stretch) var(--ease-out);
}
.rail-nav a[aria-current="true"] { color: var(--color-ink); }
.rail-nav a[aria-current="true"] .rail-num { font-stretch: var(--font-stretch-wide); }
.rail-nav a[aria-current="true"]::before { opacity: 1; }
@media (hover: hover) {
  .rail-nav a:hover { color: var(--color-ink); }
}
.rail-tip {
  position: absolute; left: calc(100% + var(--spacing-3)); top: 50%;
  transform: translateY(-50%);
  padding: var(--spacing-1) var(--spacing-3);
  background: var(--color-raise);
  color: var(--color-ink);
  border-radius: var(--radius-control);
  font-size: var(--text-small);
  font-weight: 500;
  line-height: 1.6;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-hover) var(--ease-out);
}
.rail-nav a:hover .rail-tip, .rail-nav a:focus-visible .rail-tip { opacity: 1; }
.rail-pulse { inline-size: 48px; block-size: 120px; }
.rail-pulse circle { fill: var(--color-muted); transition: fill var(--duration-hover) var(--ease-out); }
.rail-pulse circle.on { fill: var(--color-accent); }
.rail-get {
  display: flex; align-items: center; justify-content: center;
  min-inline-size: var(--spacing-hit);
  padding-block: var(--spacing-3);
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-size: var(--text-small);
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}
@media (hover: hover) {
  .rail-get:hover { text-decoration: underline 1px; text-underline-offset: 0.3em; }
}

/* ── B0 아래 전폭 띠(<1024) — 반경 0 ──────────────── */
.band {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 20;
  background: var(--color-bg);
  border-top: 1px solid var(--color-line);
  padding-bottom: env(safe-area-inset-bottom);
}
@media (min-width: 1024px) {
  .band { display: none; }
}
.band-bar {
  display: flex; align-items: center; justify-content: space-between; gap: var(--spacing-3);
  block-size: var(--spacing-band);
  padding-inline: var(--spacing-2) var(--spacing-4);
}
.band-cur {
  display: inline-flex; align-items: center; gap: var(--spacing-2);
  min-block-size: var(--spacing-hit);
  padding-inline: var(--spacing-2);
  font-size: var(--text-small);
  font-weight: 600;
  user-select: none;
}
.band-num {
  display: inline-block;
  inline-size: 1.7em;
  contain: layout paint;
  font-family: var(--font-display);
  font-weight: var(--font-weight-display);
  font-stretch: var(--font-stretch-wide);
  color: var(--color-ink);
}
.chev { inline-size: 12px; block-size: 12px; fill: none; stroke: var(--color-muted); stroke-width: 1.5; transition: transform var(--duration-accordion) var(--ease-out); }
.band-cur[aria-expanded="true"] .chev { transform: rotate(180deg); }
.band-dots { display: flex; gap: var(--spacing-2); }
.band-dots i { display: block; inline-size: 5px; block-size: 5px; border-radius: 50%; background: var(--color-line); }
.band-dots i.past { background: var(--color-muted); }
.band-dots i.on { background: var(--color-accent); }
.band-get {
  display: inline-flex; align-items: center;
  min-block-size: var(--spacing-hit);
  font-size: var(--text-small);
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}
.band-list { border-bottom: 1px solid var(--color-line); animation: band-in var(--duration-accordion) var(--ease-out); }
.band-list a {
  display: flex; align-items: center; gap: var(--spacing-3);
  min-block-size: 3rem;
  padding-inline: var(--spacing-4);
  border-top: 1px solid var(--color-line);
  font-weight: 600;
  text-decoration: none;
}
.band-list li:first-child a { border-top: 0; }
.band-list a[aria-current="true"] { color: var(--color-accent); }
.band-n {
  inline-size: 1.75rem;
  font-family: var(--font-display);
  font-weight: var(--font-weight-display);
  font-stretch: var(--font-stretch-title);
  color: var(--color-muted);
}
@keyframes band-in {
  from { opacity: 0; transform: translateY(var(--spacing-2)); }
}

/* ── B1 히어로 ─────────────────────────────────────── */
.m-mark {
  display: flex; align-items: center;
  block-size: 2.5rem;
  margin-top: var(--spacing-4);
  font-family: var(--font-display);
  font-stretch: var(--font-stretch-h1);
  font-weight: var(--font-weight-display);
  font-size: var(--text-lead);
}
@media (min-width: 1024px) {
  .m-mark { display: none; }
}
.hero { padding-top: var(--spacing-3); }
@media (min-width: 1024px) {
  .hero { padding-top: var(--spacing-6); }
}

.t1 { display: flex; flex-direction: column; gap: var(--spacing-4); }
.h1 {
  margin-top: var(--spacing-1);
  font-family: var(--font-display);
  font-weight: var(--font-weight-display);
  font-stretch: var(--font-stretch-h1);
  font-size: var(--text-display-xl-mobile);
  line-height: var(--text-display-xl--line-height);
  letter-spacing: -0.01em;
}
@media (min-width: 720px) {
  .h1 { font-size: var(--text-display-xl); }
}
.h1-l { display: block; }
/* "90" — 쉬는 폭(100)으로 잰 상자, 등장 꼭짓점(125)은 왼쪽 여백으로 넘친다(flex-end) */
.h1-90 {
  display: inline-flex; justify-content: flex-end;
  inline-size: 1.27em;
  contain: layout;
  font-stretch: var(--font-stretch-wide);
  color: var(--color-accent);
}
@media (prefers-reduced-motion: no-preference) {
  .h1-90 { animation: enter90 var(--duration-intro) var(--ease-out) both; }
}
@keyframes enter90 {
  0% { font-stretch: var(--font-stretch-label); }
  55% { font-stretch: var(--font-stretch-peak); }
  100% { font-stretch: var(--font-stretch-wide); }
}
.lead { max-inline-size: 30rem; font-size: var(--text-body); }
.wide-only { display: none; }
.narrow-only { display: inline; }
@media (min-width: 720px) {
  .wide-only { display: inline; }
  .narrow-only { display: none; }
  .lead { font-size: var(--text-lead); line-height: 1.5; }
}
.t1-foot { display: flex; flex-direction: column; gap: var(--spacing-4); margin-top: var(--spacing-1); }
.t1 .lead { margin-top: var(--spacing-2); }
@media (min-width: 1024px) {
  .t1 { block-size: 37.5rem; }
  /* 문장은 H1 에 붙고(라벨–H1 과 같은 리듬), 버튼 묶음은 선을 긋고 타일 바닥에 선다 — 바닥 정렬이 의도임을 선으로 보인다 */
  .t1-foot { margin-top: auto; padding-top: var(--spacing-6); border-top: 1px solid var(--color-line); }
}

/* T2 맥박선 */
.t2 { display: flex; flex-direction: column; gap: var(--spacing-2); block-size: 19rem; padding-bottom: var(--spacing-3); }
@media (min-width: 720px) {
  .t2 { block-size: 27.5rem; gap: var(--spacing-3); padding-bottom: var(--spacing-4); }
}
@media (min-width: 1024px) {
  .t2 { block-size: 37.5rem; padding-bottom: var(--spacing-6); }
}
.readout-top { display: flex; flex-wrap: wrap; align-items: center; gap: var(--spacing-2) var(--spacing-3); min-block-size: 1.75rem; }
.readout-top .label { color: var(--color-ink); }
.t2 .num-box-xl { margin-top: var(--spacing-1); }
.stage { position: relative; flex: 1 1 auto; min-block-size: 0; touch-action: pan-y; }
.pulse-canvas, .pulse-svg { position: absolute; inset: 0; inline-size: 100%; block-size: 100%; }
.pulse-canvas { cursor: crosshair; }
.stage-floor, .stage-today {
  position: absolute;
  font-size: var(--text-label);
  line-height: 1.2;
  color: var(--color-muted);
  pointer-events: none;
}
.stage-floor { right: 0; padding-inline: var(--spacing-1); background: var(--color-tile); top: calc((100 - var(--y)) * 1%); transform: translateY(-130%); }
.stage-today { left: var(--spacing-3); bottom: var(--spacing-2); }
.ticks { position: relative; block-size: 1.125rem; }
.ticks span {
  position: absolute; left: calc(var(--x) * 1%);
  font-family: var(--font-display);
  font-stretch: var(--font-stretch-h1);
  font-weight: var(--font-weight-label);
  font-size: var(--text-label);
  letter-spacing: var(--text-label--letter-spacing);
  text-transform: uppercase;
  color: var(--color-muted);
  line-height: 1.3;
}
.scrub { position: relative; display: block; }
.scrub-hint { display: none; font-size: var(--text-small); color: var(--color-muted); }

/* range 공용 — 트랙 muted, 손잡이 ink, 맞을 자리 44 */
input[type="range"] {
  -webkit-appearance: none; appearance: none;
  display: block;
  inline-size: 100%; block-size: var(--spacing-hit);
  margin: 0;
  background: transparent;
  cursor: pointer;
}
input[type="range"]::-webkit-slider-runnable-track { block-size: 1px; background: var(--color-muted); }
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  inline-size: 12px; block-size: 12px; margin-top: -5.5px;
  border-radius: 50%; background: var(--color-ink); border: 0;
}
input[type="range"]::-moz-range-track { block-size: 1px; background: var(--color-muted); }
input[type="range"]::-moz-range-thumb { inline-size: 12px; block-size: 12px; border-radius: 50%; background: var(--color-ink); border: 0; }

.slider { display: block; margin-top: var(--spacing-4); }
.slider-top { display: flex; justify-content: space-between; gap: var(--spacing-3); font-size: var(--text-small); color: var(--color-muted); }
.slider input[type="range"]::-webkit-slider-runnable-track { block-size: 2px; }
.slider input[type="range"]::-webkit-slider-thumb { inline-size: 18px; block-size: 18px; margin-top: -8px; }
.slider input[type="range"]::-moz-range-track { block-size: 2px; }
.slider input[type="range"]::-moz-range-thumb { inline-size: 18px; block-size: 18px; }

/* 정지 모드 — 숨·렌즈 없이, 스크럽 막대가 보이는 날짜 슬라이더로 */
.still .scrub-hint { display: block; }
.still .scrub input[type="range"]::-webkit-slider-runnable-track { block-size: 4px; border-radius: 2px; }
.still .scrub input[type="range"]::-webkit-slider-thumb { inline-size: 20px; block-size: 20px; margin-top: -8px; }
.still .scrub input[type="range"]::-moz-range-track { block-size: 4px; }
.still .scrub input[type="range"]::-moz-range-thumb { inline-size: 20px; block-size: 20px; }
.still .t2 .ticks { display: none; }

/* SVG 점 — 길이 0 경로 + 둥근 끝(늘여도 원), 속 빈 점은 잉크 고리 */
.sd, .sr-o, .sr-i, .sf { fill: none; stroke-linecap: round; vector-effect: non-scaling-stroke; }
.sd { stroke: var(--color-accent); stroke-width: 3.2; }
.sr-o { stroke: var(--color-ink); stroke-width: 4.6; }
.sr-i { stroke-width: 2.6; }
.sr-tile { stroke: var(--color-tile); }
.sr-bg { stroke: var(--color-bg); }
.sf { stroke: var(--color-muted); stroke-width: 1; stroke-dasharray: 2 4; stroke-linecap: butt; }

/* B1b 둘째 행 */
.strip-t, .mini { display: flex; flex-direction: column; gap: var(--spacing-2); }
@media (min-width: 1024px) {
  .strip-t, .mini { block-size: 12.25rem; padding-block: var(--spacing-8); }
}
.strip-head { display: flex; align-items: center; gap: var(--spacing-4); }
.strip-n {
  font-family: var(--font-display);
  font-weight: var(--font-weight-num);
  font-stretch: var(--font-stretch-num);
  font-size: var(--text-num-l);
  line-height: 1;
  color: var(--color-accent);
}
.strip-txt { display: flex; flex-direction: column; font-weight: 600; line-height: 1.35; }
.strip-sub { font-size: var(--text-small); font-weight: 400; color: var(--color-muted); }
.strip {
  display: grid;
  grid-template-columns: repeat(45, minmax(0, 1fr));
  row-gap: var(--spacing-2);
  margin-top: auto;
  padding-top: var(--spacing-3);
}
@media (min-width: 720px) {
  .strip { grid-template-columns: repeat(90, minmax(0, 1fr)); }
}
.strip i {
  display: block; justify-self: center;
  inline-size: min(100%, 5px); aspect-ratio: 1;
  border-radius: 50%;
  background: var(--color-muted);
}
.strip i.u { background: transparent; box-shadow: inset 0 0 0 1px var(--color-ink); }
.mini-date { font-size: var(--text-small); }
.mini-num { margin-top: auto; font-size: var(--text-num-l); line-height: 1; }
.mini-num .n { font-stretch: var(--font-stretch-num); }
.mini-sub { font-size: var(--text-small); color: var(--color-muted); }

/* ── B2 작동 방식 ──────────────────────────────────── */
.how-line { display: block; inline-size: 100%; }
.how-line .sd { stroke-width: 2.6; }
.how-h { display: none; block-size: 6rem; }
.how-v { position: absolute; left: var(--spacing-4); top: var(--spacing-6); inline-size: 2.5rem; block-size: calc(100% - var(--spacing-12)); }
.steps { display: grid; gap: var(--spacing-8); padding-left: var(--spacing-12); }
.steps li { position: relative; }
.steps li::before {
  content: "";
  position: absolute; left: calc(-1 * var(--spacing-12) + 1.5rem); top: 0.35rem;
  inline-size: 9px; block-size: 9px;
  border: 1px solid var(--color-ink); border-radius: 50%;
  background: var(--color-tile);
}
.step-n { font-family: var(--font-display); font-weight: var(--font-weight-display); font-stretch: var(--font-stretch-title); font-size: var(--text-small); }
.steps h3 { margin-top: var(--spacing-1); font-size: var(--text-lead); font-weight: 600; line-height: 1.3; }
.steps p { margin-top: var(--spacing-2); font-size: var(--text-small); color: var(--color-muted); }
@media (min-width: 720px) {
  .how-h { display: block; }
  .how-v { display: none; }
  .steps { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; padding-left: 0; margin-top: var(--spacing-4); border-top: 1px solid var(--color-line); }
  .steps li { padding: var(--spacing-6) var(--spacing-6) 0 0; }
  .steps li::before { left: 0; top: -5px; }
}

/* ── B3 예측 ──────────────────────────────────────── */
.f1 { display: flex; flex-direction: column; gap: var(--spacing-3); }
.f1-stage { block-size: clamp(11rem, 22vw, 18.75rem); margin-top: var(--spacing-2); }
.f1-svg { display: block; inline-size: 100%; block-size: 100%; overflow: visible; }
.f1-svg .sd { stroke-width: 5; }
.f1-svg .sr-o { stroke-width: 6.5; }
.f1-svg .sr-i { stroke-width: 4.5; }
.f1-sel { stroke: var(--color-ink); stroke-width: 1; vector-effect: non-scaling-stroke; }
.f1-pick { fill: none; stroke: var(--color-ink); stroke-width: 13; stroke-linecap: round; vector-effect: non-scaling-stroke; }
.f2 { display: flex; flex-direction: column; gap: var(--spacing-3); }
.events { margin-top: var(--spacing-2); border-top: 1px solid var(--color-line); }
.events li {
  display: flex; justify-content: space-between; align-items: baseline; gap: var(--spacing-4);
  padding-block: var(--spacing-3);
  border-bottom: 1px solid var(--color-line);
  font-size: var(--text-small);
}
.events .ev-day { color: var(--color-muted); }
.week { display: flex; flex-direction: column; gap: var(--spacing-2); margin-top: var(--spacing-2); }
.week-top { display: flex; justify-content: space-between; gap: var(--spacing-3); }
.week-range { font-size: var(--text-small); color: var(--color-muted); }
.week-svg { display: block; inline-size: 100%; block-size: 5rem; overflow: visible; }
.week-svg .sd { stroke-width: 6; }
.week-svg .sr-o { stroke-width: 7.5; }
.week-svg .sr-i { stroke-width: 5.5; }
.week-svg .wk-pick { fill: none; stroke: var(--color-ink); stroke-width: 15; stroke-linecap: round; vector-effect: non-scaling-stroke; }
.week-svg .wk-tick { stroke: var(--color-line); stroke-width: 1; vector-effect: non-scaling-stroke; }
.f2-foot { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--spacing-3); margin-top: auto; padding-top: var(--spacing-4); border-top: 1px solid var(--color-line); }
.f2-foot dt { font-size: var(--text-small); color: var(--color-muted); }
.f2-foot dd { font-size: var(--text-lead); }

.months { inline-size: 100%; margin-top: var(--spacing-4); font-size: var(--text-small); }
.months th, .months td { padding: var(--spacing-3); text-align: right; border-bottom: 1px solid var(--color-line); }
.months th:first-child { text-align: left; }
.months thead th { background: var(--color-raise); color: var(--color-muted); font-weight: 500; border-bottom: 0; }
.months thead th:first-child { border-radius: var(--radius-control) 0 0 var(--radius-control); }
.months thead th:last-child { border-radius: 0 var(--radius-control) var(--radius-control) 0; }
.months tbody th { font-weight: 600; }

.lenses { display: flex; justify-content: space-between; gap: var(--spacing-4); margin-top: var(--spacing-6); }
.lenses li { display: flex; flex-direction: column; align-items: center; gap: var(--spacing-2); font-size: var(--text-small); color: var(--color-muted); text-align: center; }
.f4-svg { inline-size: clamp(5.5rem, 10vw, 8.5rem); aspect-ratio: 1; }
.f4-c { fill: none; stroke: var(--color-muted); stroke-width: 1; vector-effect: non-scaling-stroke; }
.f4-svg .sd { stroke-width: 3; }
.f4-p { margin-top: var(--spacing-6); max-inline-size: 36ch; }

/* ── B4 구독 ──────────────────────────────────────── */
.subs { inline-size: 100%; font-size: var(--text-small); }
.subs caption { text-align: left; padding-bottom: var(--spacing-4); }
.subs th, .subs td { padding: var(--spacing-3) var(--spacing-2); text-align: left; border-bottom: 1px solid var(--color-line); vertical-align: middle; }
.subs thead th { color: var(--color-muted); font-weight: 500; }
.subs tbody th { font-weight: 600; font-size: var(--text-body); }
.subs .s-amt { text-align: right; }
.subs thead th:nth-child(4) { text-align: right; }
.subs .s-what, .subs .s-dom { color: var(--color-muted); }
.subs .s-last .chip { margin-left: var(--spacing-2); }
.subs .s-amt .n, .months .n { font-size: var(--text-body); }
@media (min-width: 720px) {
  .subs th:last-child, .subs td:last-child { padding-left: var(--spacing-6); }
}
@media (max-width: 719px) {
  .subs thead { position: absolute; inline-size: 1px; block-size: 1px; overflow: hidden; clip-path: inset(50%); }
  /* 1열 — 한 줄: 이름 · 금액 / 둘째 줄: 무엇 · 청구일 · 마지막 연 날(딱지는 넘치면 줄 처음으로) */
  .subs tr {
    display: flex; flex-wrap: wrap; align-items: baseline;
    gap: var(--spacing-1) var(--spacing-2);
    padding-block: var(--spacing-3);
    border-bottom: 1px solid var(--color-line);
    color: var(--color-muted);
  }
  .subs th, .subs td { padding: 0; border: 0; }
  .subs tbody th { order: 0; flex: 1 0 calc(100% - 5rem); color: var(--color-ink); }
  .subs .s-amt { order: 1; flex: 0 0 calc(5rem - var(--spacing-2)); text-align: right; font-size: var(--text-body); color: var(--color-ink); }
  .subs .s-what { order: 2; }
  .subs .s-dom { order: 3; }
  .subs .s-last { order: 4; }
  .subs .s-dom::before { content: "· billed "; }
  .subs .s-last::before { content: "· opened "; }
  .subs .s-last .chip { margin: var(--spacing-1) 0 0; }
}

.s2 { display: flex; flex-direction: column; gap: var(--spacing-4); }
.big-num { display: flex; align-items: baseline; flex-wrap: wrap; gap: var(--spacing-3); margin-top: var(--spacing-2); }
.big-num .num-l { font-size: var(--text-num-xl); }
.big-per { font-size: var(--text-lead); font-weight: 600; }
.s2-p { max-inline-size: 30ch; color: var(--color-muted); }
.s3 { display: flex; flex-direction: column; gap: var(--spacing-4); }
.s3-stage { block-size: clamp(8.5rem, 16vw, 13.75rem); }
.s3-svg { display: block; inline-size: 100%; block-size: 100%; overflow: visible; }
.s3-svg .sd { stroke-width: 3.6; }
.s3-svg .sr-o { stroke-width: 7; }
.s3-svg .sr-i { stroke-width: 5; }
.legend { display: flex; flex-wrap: wrap; gap: var(--spacing-2) var(--spacing-6); font-size: var(--text-small); }
.legend li { display: inline-flex; align-items: center; gap: var(--spacing-2); }
.lg-dot, .lg-ring { display: inline-block; inline-size: 8px; block-size: 8px; border-radius: 50%; }
.lg-dot { background: var(--color-accent); }
.lg-ring { box-shadow: inset 0 0 0 1px var(--color-ink); }

/* ── B5 알림 ──────────────────────────────────────── */
.a1 { display: flex; flex-direction: column; gap: var(--spacing-4); }
.rules { border-top: 1px solid var(--color-line); }
.rule {
  display: flex; align-items: center; justify-content: space-between; gap: var(--spacing-4);
  inline-size: 100%; min-block-size: 3.75rem;
  padding-block: var(--spacing-3);
  border-bottom: 1px solid var(--color-line);
  text-align: left;
  line-height: 1.4;
}
.switch {
  position: relative; flex: none;
  inline-size: 2.5rem; block-size: 1.5rem;
  border: 1px solid var(--color-muted);
  border-radius: var(--radius-chip);
  background: var(--color-raise);
}
.switch::after {
  content: "";
  position: absolute; left: 4px; top: 4px;
  inline-size: 14px; block-size: 14px;
  border-radius: 50%;
  background: var(--color-muted);
  transition: transform var(--duration-hover) var(--ease-out), background-color var(--duration-hover) var(--ease-out);
}
.rule[aria-pressed="true"] .switch::after { transform: translateX(16px); background: var(--color-accent); }
.next-warn { padding: var(--spacing-4); border-radius: var(--radius-control); background: var(--color-raise); transition: opacity var(--duration-hover) var(--ease-out); }
.next-warn.gone { opacity: 0.4; }
.next-line { display: flex; flex-direction: column; margin-top: var(--spacing-2); }
.next-date { font-weight: 600; font-size: var(--text-lead); }
.next-about { font-size: var(--text-small); color: var(--color-muted); }
.a1-p { margin-top: auto; font-size: var(--text-small); color: var(--color-muted); }
.a2 { display: grid; place-items: center; }
.phone {
  inline-size: min(17.5rem, 100%);
  aspect-ratio: 1 / 1.7;
  padding: var(--spacing-10) var(--spacing-4) var(--spacing-6);
  border: 1px solid var(--color-ink);
  border-radius: var(--radius-phone);
  background: var(--color-bg);
  text-align: center;
}
@media (max-width: 719px) {
  /* 1열에서는 화면 비율을 풀고 내용 높이만큼 — 잠금 화면 아래 빈 덩어리를 두지 않는다 */
  .phone { aspect-ratio: auto; padding-bottom: var(--spacing-8); }
}
.ph-time {
  font-family: var(--font-display);
  font-weight: var(--font-weight-num);
  font-stretch: var(--font-stretch-num);
  font-size: var(--text-num-l);
  line-height: 1;
}
.ph-date { margin-top: var(--spacing-2); font-size: var(--text-small); color: var(--color-muted); }
.note {
  margin-top: var(--spacing-8);
  padding: var(--spacing-3) var(--spacing-4);
  border-radius: var(--radius-tile);
  background: var(--color-raise);
  text-align: left;
  font-size: var(--text-small);
  line-height: 1.45;
  transition: opacity var(--duration-hover) var(--ease-out);
}
.note.gone { opacity: 0; }
.note-old { margin-top: var(--spacing-2); opacity: 0.72; }
.note-old.gone { opacity: 0; }
.note-old .note-title { font-weight: 500; }
.note-top { display: flex; justify-content: space-between; color: var(--color-muted); font-size: var(--text-label); }
.note-title { margin-top: var(--spacing-1); font-weight: 600; }
.note-body { margin-top: var(--spacing-1); }
.note-off { margin-top: var(--spacing-4); font-size: var(--text-small); color: var(--color-muted); }

/* ── B6 보안 ──────────────────────────────────────── */
.defs > div { display: grid; gap: var(--spacing-1) var(--spacing-6); padding-block: var(--spacing-5); border-bottom: 1px solid var(--color-line); }
.defs > div:first-child { padding-top: 0; }
.defs > div:last-child { border-bottom: 0; padding-bottom: 0; }
.defs dt { font-weight: 600; font-size: var(--text-lead); line-height: 1.3; }
.defs dd { color: var(--color-muted); }
@media (min-width: 720px) {
  .defs > div { grid-template-columns: minmax(0, 2fr) minmax(0, 3fr); }
}

/* ── B7 요금 ──────────────────────────────────────── */
.seg {
  display: inline-flex; gap: var(--spacing-1);
  margin-top: var(--spacing-6);
  padding: 3px;
  border: 1px solid var(--color-muted);
  border-radius: var(--radius-control);
}
.head-wide .seg { margin-top: 0; }
.seg button {
  min-block-size: var(--spacing-hit);
  padding-inline: var(--spacing-4);
  border: 1px solid transparent;
  border-radius: var(--radius-control);
  font-weight: 600;
  font-size: var(--text-small);
  color: var(--color-muted);
}
.seg button[aria-pressed="true"] { border-color: var(--color-ink); color: var(--color-ink); }
.p-free, .p-plus { display: flex; flex-direction: column; gap: var(--spacing-5); }
.price { display: flex; flex-direction: column; align-items: flex-start; gap: var(--spacing-1); }
.price .num-l { font-size: var(--text-num-xl); }
.price-per { font-size: var(--text-body); color: var(--color-muted); }
.checks { display: grid; gap: var(--spacing-3); }
.checks li { display: flex; align-items: center; gap: var(--spacing-3); }
.ck { flex: none; inline-size: 16px; block-size: 16px; fill: none; stroke: var(--color-ink); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.plus-svg { display: block; inline-size: 100%; block-size: 4rem; margin-top: auto; }
.plus-svg .sd { stroke-width: 2.6; }
.p-free .btn, .p-plus .btn { align-self: start; }
.p-free .btn { margin-top: auto; }
@media (max-width: 719px) {
  .p-plus { order: 1; }
  .p-free { order: 2; }
}

/* ── B8 FAQ ───────────────────────────────────────── */
.faq { border-top: 1px solid var(--color-line); }
.faq details { border-bottom: 1px solid var(--color-line); }
.faq summary {
  display: flex; align-items: center; justify-content: space-between; gap: var(--spacing-4);
  min-block-size: 4rem;
  padding-block: var(--spacing-4);
  font-size: var(--text-lead);
  font-weight: 600;
  line-height: 1.35;
  cursor: pointer;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.pm { flex: none; inline-size: 16px; block-size: 16px; fill: none; stroke: var(--color-ink); stroke-width: 1.5; }
details[open] .pm-v { display: none; }
.faq-a { display: grid; grid-template-rows: 1fr; }
.faq-a > div { min-block-size: 0; overflow: hidden; }
.faq-a p { max-inline-size: 60ch; padding-bottom: var(--spacing-6); color: var(--color-muted); }
details[open] > .faq-a { animation: acc var(--duration-accordion) var(--ease-out); }
@keyframes acc {
  from { grid-template-rows: 0fr; opacity: 0; }
}

/* ── B9 앱 받기 — 키네틱 줄 ───────────────────────── */
.get { padding-top: var(--spacing-8); }
.kin {
  font-family: var(--font-display);
  font-weight: var(--font-weight-display);
  font-size: var(--text-display-cta);
  line-height: 0.92;
  letter-spacing: -0.01em;
}
/* 줄 상자 = 출렁임 최대 폭(wdth 100, 모바일 80)으로 잰 고정 폭 */
.kin-line {
  display: block;
  inline-size: 6.3em;
  max-inline-size: 100%;
  contain: layout paint;
  padding-block: 0.04em;
  white-space: nowrap;
  font-stretch: var(--font-stretch-title);
}
@media (min-width: 720px) {
  .kin-line { inline-size: 7.85em; }
}
.kin-line span { display: inline-block; white-space: pre; }
/* JS 가 붙으면 글자는 절대 위치 + transform — 폭이 출렁여도 어떤 글자의 시작점도 흐름에서 밀리지 않는다(layout-shift 0) */
.kin-line.abs { position: relative; contain: layout; block-size: 0.92em; padding-block: 0; }
.kin-line.abs span { position: absolute; left: 0; top: 0; will-change: transform; }
.get-p { margin-top: var(--spacing-8); max-inline-size: 30rem; font-size: var(--text-lead); line-height: 1.5; color: var(--color-muted); }
.get .actions { margin-top: var(--spacing-6); }
.get .demo { margin-top: var(--spacing-4); }
.cta-band { display: block; inline-size: 100%; block-size: 3.5rem; margin-top: var(--spacing-12); }
.cta-band .sd { stroke-width: 2.4; }
.cta-band .sr-o { stroke-width: 3.6; }
.cta-band .sr-i { stroke-width: 1.6; }

/* ── B10 꼬리 ─────────────────────────────────────── */
.foot { margin-top: var(--spacing-section); border-top: 1px solid var(--color-line); }
.foot-in { display: grid; gap: var(--spacing-6); padding-block: var(--spacing-12); }
.foot-mark { font-family: var(--font-display); font-stretch: var(--font-stretch-h1); font-weight: var(--font-weight-display); font-size: var(--text-num-l); line-height: 1; }
.foot-links { display: flex; flex-wrap: wrap; margin-inline: calc(-1 * var(--spacing-3)); }
.foot-links a { display: inline-flex; align-items: center; min-block-size: var(--spacing-hit); padding-inline: var(--spacing-3); font-size: var(--text-small); text-decoration: none; color: var(--color-muted); }
@media (hover: hover) {
  .foot-links a:hover { color: var(--color-ink); }
}
.foot-note { max-inline-size: 64ch; font-size: var(--text-small); color: var(--color-muted); }
.foot-copy { font-size: var(--text-small); color: var(--color-muted); }

/* ── 동작 줄이기 · #motion=still ───────────────────── */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition-duration: 0s !important; }
}
.still, .still *, .still *::before, .still *::after { animation: none !important; transition-duration: 0s !important; }
.still { scroll-behavior: auto; }