05両端の引用符が内側へ滑り込む引用

<main class="stage">
  <figure class="qs is-demo" aria-label="両端の引用符が締まる引用">
    <blockquote class="qs__body">問いを誤れば、<br>いい答えも役に立たない。</blockquote>
  </figure>
</main>

@use "../../../../site/static/demo-tokens" as *;

// 인터뷰용 인용구 — ::before/::after 로 얹은 커다란 따옴표 글리프가 바깥에서 안으로 미끄러져
// 들어와 문장을 틀 안에 가두고, 문장은 가운데서 한 번 떠오른다.
// 따옴표는 아이콘이 아니라 타이포그래피 글리프(세리프) — 문장보다 크게 벌려 두는 게 핵심.
$duration: $dur-loop;
$easing: $ease-spring;
$color: $stage-paper;

@include stage($stage-ink);

.qs {
  box-sizing: border-box;
  width: min(320px, 92vw);
  margin: 0;
  padding: $sp-6 $sp-8;
  font-family: inherit;
}
.qs * { box-sizing: border-box; }

.qs__body {
  position: relative;
  z-index: 1;
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.7;
  text-align: center;
  color: $color;
}

// 양 끝 따옴표 — 문장보다 위·아래로 크게 벌어져 있는 글리프
.qs__body::before,
.qs__body::after {
  position: absolute;
  z-index: -1;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 52px;
  font-weight: 700;
  line-height: 1;
  color: $subject-lilac;
  opacity: .9;
  pointer-events: none;
}
.qs__body::before { content: "\201C"; top: -28px; left: -20px; }
.qs__body::after  { content: "\201D"; bottom: -28px; right: -20px; }

// ── 미리보기 루프 ─────────────────
.qs.is-demo .qs__body {
  animation-name: qsLift;
  animation-duration: $duration;
  animation-timing-function: $easing;
  animation-iteration-count: infinite;
}
.qs.is-demo .qs__body::before {
  animation-name: qsMarkBefore;
  animation-duration: $duration;
  animation-timing-function: $easing;
  animation-iteration-count: infinite;
}
.qs.is-demo .qs__body::after {
  animation-name: qsMarkAfter;
  animation-duration: $duration;
  animation-timing-function: $easing;
  animation-iteration-count: infinite;
}

// 문장·따옴표 모두 opacity 램프를 쓰지 않는다 — 텍스트 페이드의 중간값이 poster 에
// 반투명 유령으로 남는다(237 계열 함정). 문장은 translateY 로, 따옴표는 슬라이드+스케일로
// 처음부터 불투명하게 움직인다. 복귀: 문장은 되돌아 내려가고, 따옴표는 바깥으로 슬라이드.
@keyframes qsLift {
  0%, 20%   { opacity: 1; transform: translateY(10px); }
  32%, 68%  { opacity: 1; transform: translateY(0); }
  74%, 100% { opacity: 1; transform: translateY(10px); }
}
// 여는 따옴표: 왼바깥 → 제자리 → 다시 바깥으로(불투명 유지)
@keyframes qsMarkBefore {
  0%        { opacity: .9; transform: translateX(-30px) scale(.7); }
  28%, 68%  { opacity: .9; transform: translateX(0) scale(1); }
  92%, 100% { opacity: .9; transform: translateX(-30px) scale(.7); }
}
// 닫는 따옴표: 오른바깥 → 제자리 → 다시 바깥으로(같은 시간, 반대 방향 — 두 글리프가
// 동시에 움직이는 입장 프레임이 최대 변화)
@keyframes qsMarkAfter {
  0%        { opacity: .9; transform: translateX(30px) scale(.7); }
  28%, 68%  { opacity: .9; transform: translateX(0) scale(1); }
  92%, 100% { opacity: .9; transform: translateX(30px) scale(.7); }
}

@media (prefers-reduced-motion: reduce) {
  .qs.is-demo .qs__body,
  .qs.is-demo .qs__body::before,
  .qs.is-demo .qs__body::after {
    animation: none !important;
  }
}

@media (max-width: 340px) {
  .qs { padding: $sp-5 $sp-6; }
  .qs__body { font-size: 14px; }
  .qs__body::before, .qs__body::after { font-size: 44px; }
  .qs__body::before { top: -24px; left: -16px; }
  .qs__body::after  { bottom: -24px; right: -16px; }
}

@charset "UTF-8";
html, body {
  margin: 0;
  overflow: hidden;
}

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #17141a;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.qs {
  box-sizing: border-box;
  width: min(320px, 92vw);
  margin: 0;
  padding: 24px 32px;
  font-family: inherit;
}

.qs * {
  box-sizing: border-box;
}

.qs__body {
  position: relative;
  z-index: 1;
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.7;
  text-align: center;
  color: #ffffff;
}

.qs__body::before,
.qs__body::after {
  position: absolute;
  z-index: -1;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 52px;
  font-weight: 700;
  line-height: 1;
  color: #b9a0ff;
  opacity: 0.9;
  pointer-events: none;
}

.qs__body::before {
  content: "“";
  top: -28px;
  left: -20px;
}

.qs__body::after {
  content: "”";
  bottom: -28px;
  right: -20px;
}

.qs.is-demo .qs__body {
  animation-name: qsLift;
  animation-duration: 2s;
  animation-timing-function: cubic-bezier(0.2, 0.8, 0.2, 1);
  animation-iteration-count: infinite;
}

.qs.is-demo .qs__body::before {
  animation-name: qsMarkBefore;
  animation-duration: 2s;
  animation-timing-function: cubic-bezier(0.2, 0.8, 0.2, 1);
  animation-iteration-count: infinite;
}

.qs.is-demo .qs__body::after {
  animation-name: qsMarkAfter;
  animation-duration: 2s;
  animation-timing-function: cubic-bezier(0.2, 0.8, 0.2, 1);
  animation-iteration-count: infinite;
}

@keyframes qsLift {
  0%, 20% {
    opacity: 1;
    transform: translateY(10px);
  }
  32%, 68% {
    opacity: 1;
    transform: translateY(0);
  }
  74%, 100% {
    opacity: 1;
    transform: translateY(10px);
  }
}
@keyframes qsMarkBefore {
  0% {
    opacity: 0.9;
    transform: translateX(-30px) scale(0.7);
  }
  28%, 68% {
    opacity: 0.9;
    transform: translateX(0) scale(1);
  }
  92%, 100% {
    opacity: 0.9;
    transform: translateX(-30px) scale(0.7);
  }
}
@keyframes qsMarkAfter {
  0% {
    opacity: 0.9;
    transform: translateX(30px) scale(0.7);
  }
  28%, 68% {
    opacity: 0.9;
    transform: translateX(0) scale(1);
  }
  92%, 100% {
    opacity: 0.9;
    transform: translateX(30px) scale(0.7);
  }
}
@media (prefers-reduced-motion: reduce) {
  .qs.is-demo .qs__body,
  .qs.is-demo .qs__body::before,
  .qs.is-demo .qs__body::after {
    animation: none !important;
  }
}
@media (max-width: 340px) {
  .qs {
    padding: 20px 24px;
  }
  .qs__body {
    font-size: 14px;
  }
  .qs__body::before, .qs__body::after {
    font-size: 44px;
  }
  .qs__body::before {
    top: -24px;
    left: -16px;
  }
  .qs__body::after {
    bottom: -24px;
    right: -16px;
  }
}

// QuoteBracketSlide — vanilla 판(run/282/demo/05-quote-bracket-slide) 의 React 포트.
import { useState } from "react";
import type { CSSProperties } from "react";
import styles from "./QuoteBracketSlide.module.scss";

export type QuoteBracketSlideProps = {
  line1?: string;
  line2?: string;
  groupLabel?: string;
  demo?: boolean;
  duration?: number;
  easing?: string;
  color?: string;
};

type Vars = CSSProperties & { "--duration"?: string; "--easing"?: string; "--color"?: string };

export default function QuoteBracketSlide({
  line1 = "물음을 잘못 골랐다면",
  line2 = "좋은 답도 소용이 없다.",
  groupLabel = "양 끝 따옴표가 닫히는 인용구",
  demo = true,
  duration = 2000,
  easing = "cubic-bezier(.2, .8, .2, 1)",
  color = "#ffffff",
}: QuoteBracketSlideProps) {
  const [live, setLive] = useState(demo);
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };

  function onEnter() {
    setLive(false);
  }

  const cls = [styles.qs, live ? styles.isDemo : ""].filter(Boolean).join(" ");
  return (
    <figure className={cls} style={vars} aria-label={groupLabel} onMouseEnter={onEnter}>
      <blockquote className={styles.body}>{line1}<br />{line2}</blockquote>
    </figure>
  );
}