07Crayon-hatch CTA band

<main class="stage">
  <svg width="0" height="0" style="position:absolute" aria-hidden="true" focusable="false">
    <filter id="rough7" x="-30%" y="-30%" width="160%" height="160%">
      <feTurbulence type="fractalNoise" baseFrequency="0.05 0.07" numOctaves="2" seed="44" result="n"/>
      <feDisplacementMap in="SourceGraphic" in2="n" scale="5" xChannelSelector="R" yChannelSelector="G"/>
    </filter>
  </svg>
  <section class="ctacrayon">
    <h2 class="ctacrayon__title">Color it in like a crayon, right now</h2>
    <p class="ctacrayon__desc">Try it for free</p>
    <span class="ctacrayon__btn-wrap">
      <svg class="ctacrayon__btn-frame" viewBox="0 0 120 44" preserveAspectRatio="none" aria-hidden="true">
        <rect x="4" y="4" width="112" height="36" rx="18" class="ctacrayon__btn-rect" />
      </svg>
      <button class="ctacrayon__btn" type="button">Get started</button>
    </span>
  </section>
</main>

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

$duration: $dur-loop;       // 버튼 테두리가 한 번 다시 그려지는 주기
$easing:   $ease-spring;    // 눌림 곡선
$color:    $stage-ink;      // 글자 색 기본값(토큰) — 아래 크레용 잉크로 덮는다

$crayon-paper:  #fff8ef;
$crayon-ink:    #33261c;
$crayon-red:    #dbb6b7;
$crayon-yellow: #d1c5a2;
$crayon-blue:   #9cb8ce;
$crayon-green:  #6dbe6d;
$crayon-purple: #cbbfe0;
$crayon-purple-tint: #efe6fb;

@include stage($crayon-paper);

.ctacrayon {
  position: relative;
  width: clamp(230px, 86vw, 340px);
  border-radius: $r-card;
  padding: $sp-8 $sp-5;
  text-align: center;
  overflow: hidden;
  background:
    repeating-linear-gradient(45deg, rgba($crayon-ink, .08) 0 2px, transparent 2px 9px),
    $crayon-purple-tint;
  border: 3px solid $crayon-ink;
}
.ctacrayon__title {
  margin: 0 0 $sp-1;
  color: $crayon-ink;
  font-weight: 700;
  font-size: clamp(15px, 3.6vw, 19px);
  line-height: 1.3;
}
.ctacrayon__desc {
  margin: 0 0 $sp-4;
  color: rgba($crayon-ink, .72);
  font-weight: 500;
  font-size: clamp(11px, 2.6vw, 13px);
}
.ctacrayon__btn-wrap {
  position: relative;
  display: inline-block;
}
.ctacrayon__btn-frame {
  position: absolute;
  inset: -6px;
  width: calc(100% + 12px);
  height: calc(100% + 12px);
  pointer-events: none;
  filter: url(#rough7);
}
.ctacrayon__btn-rect {
  fill: none;
  stroke: $crayon-red;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-dasharray: 14 8;
  animation: btnFrameMarch $duration linear infinite;
}
.ctacrayon__btn {
  position: relative;
  border: 0;
  border-radius: $r-pill;
  background: $stage-paper;
  color: $crayon-ink;
  padding: $sp-3 $sp-6;
  font-weight: 700;
  font-size: clamp(12px, 2.8vw, 14px);
  animation: btnPress $duration $easing infinite;
}
.ctacrayon__btn:focus-visible {
  outline: 3px solid $crayon-ink;
  outline-offset: 2px;
}

// 데모: 버튼 테두리가 크레용으로 계속 덧그려지고, 버튼 자체는 눌렸다 돌아오길 반복한다
@keyframes btnFrameMarch {
  to { stroke-dashoffset: -440; }
}
@keyframes btnPress {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(.94); }
}

@media (max-width: 340px), (max-height: 220px) {
  .ctacrayon { padding: $sp-4 $sp-3; }
  .ctacrayon__title { font-size: 13px; }
  .ctacrayon__desc { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .ctacrayon__btn-rect, .ctacrayon__btn {
    animation: none !important;
    transform: none;
  }
}

html, body {
  margin: 0;
  overflow: hidden;
}

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #fff8ef;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.ctacrayon {
  position: relative;
  width: clamp(230px, 86vw, 340px);
  border-radius: 16px;
  padding: 32px 20px;
  text-align: center;
  overflow: hidden;
  background: repeating-linear-gradient(45deg, rgba(51, 38, 28, 0.08) 0 2px, transparent 2px 9px), #efe6fb;
  border: 3px solid #33261c;
}

.ctacrayon__title {
  margin: 0 0 4px;
  color: #33261c;
  font-weight: 700;
  font-size: clamp(15px, 3.6vw, 19px);
  line-height: 1.3;
}

.ctacrayon__desc {
  margin: 0 0 16px;
  color: rgba(51, 38, 28, 0.72);
  font-weight: 500;
  font-size: clamp(11px, 2.6vw, 13px);
}

.ctacrayon__btn-wrap {
  position: relative;
  display: inline-block;
}

.ctacrayon__btn-frame {
  position: absolute;
  inset: -6px;
  width: calc(100% + 12px);
  height: calc(100% + 12px);
  pointer-events: none;
  filter: url(#rough7);
}

.ctacrayon__btn-rect {
  fill: none;
  stroke: #dbb6b7;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-dasharray: 14 8;
  animation: btnFrameMarch 2s linear infinite;
}

.ctacrayon__btn {
  position: relative;
  border: 0;
  border-radius: 999px;
  background: #ffffff;
  color: #33261c;
  padding: 12px 24px;
  font-weight: 700;
  font-size: clamp(12px, 2.8vw, 14px);
  animation: btnPress 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

.ctacrayon__btn:focus-visible {
  outline: 3px solid #33261c;
  outline-offset: 2px;
}

@keyframes btnFrameMarch {
  to {
    stroke-dashoffset: -440;
  }
}
@keyframes btnPress {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(0.94);
  }
}
@media (max-width: 340px), (max-height: 220px) {
  .ctacrayon {
    padding: 16px 12px;
  }
  .ctacrayon__title {
    font-size: 13px;
  }
  .ctacrayon__desc {
    display: none;
  }
}
@media (prefers-reduced-motion: reduce) {
  .ctacrayon__btn-rect, .ctacrayon__btn {
    animation: none !important;
    transform: none;
  }
}

import type { CSSProperties } from "react";
import styles from "./CtaBandCrayon.module.scss";

export type CtaBandCrayonProps = {
  title?: string;
  desc?: string;
  cta?: string;
  duration?: number;
  easing?: string;
  color?: string;
};

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

export default function CtaBandCrayon({
  title = "지금 크레용처럼 칠해보세요",
  desc = "무료로 시작해보세요",
  cta = "시작하기",
  duration = 2000,
  easing = "cubic-bezier(.2,.8,.2,1)",
  color = "#ff5a5f",
}: CtaBandCrayonProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };

  return (
    <section className={styles.band} style={vars}>
      <svg width="0" height="0" style={{ position: "absolute" }} aria-hidden="true" focusable="false">
        <filter id="cb-rough" x="-30%" y="-30%" width="160%" height="160%">
          <feTurbulence type="fractalNoise" baseFrequency={0.06} numOctaves={2} seed={44} result="n" />
          <feDisplacementMap in="SourceGraphic" in2="n" scale={5} xChannelSelector="R" yChannelSelector="G" />
        </filter>
      </svg>
      <h2 className={styles.title}>{title}</h2>
      <p className={styles.desc}>{desc}</p>
      <span className={styles.btnWrap}>
        <svg className={styles.btnFrame} viewBox="0 0 120 44" preserveAspectRatio="none" aria-hidden="true">
          <rect x={4} y={4} width={112} height={36} rx={18} className={styles.btnRect} />
        </svg>
        <button type="button" className={styles.btn}>{cta}</button>
      </span>
    </section>
  );
}