@import url('https://fonts.googleapis.com/css2?family=Kaisei+Decol:wght@700&family=M+PLUS+1:wght@100..900&display=swap');

:root {
  /* color */
  --color-pink: #f3a7c2;
  --color-lightpink: #f9c9cf;
  --color-cream: #fff1a0;
  --color-sky: #a9d6f5;
  --color-lavender: #d2c6f7;
  --color-lime: #cce7a4;
  --color-white: #ffffff;
  --color-ink: #2d2a32;

  /* spacing */
  --space-2xs: 4px;
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;

  /* radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 999px;

  /* shadow */
  --shadow-soft: 0 4px 12px rgba(45, 42, 50, 0.12);
  --shadow-lift: 0 10px 24px rgba(45, 42, 50, 0.18);
  --shadow-white: #ffffff 0px 0px 10px;

  /* font */
  --font-body: "M PLUS 1", sans-serif;
  --font-display: "Kaisei Decol", serif;
  --font-size-sm: 14px;
  --font-size-md: 16px;
  --font-size-lg: 20px;
  --font-size-xl: 28px;
  --font-size-2xl: 36px;
  --line-height-body: 1.7;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--font-size-md);
  line-height: var(--line-height-body);
  color: var(--color-ink);
  background: linear-gradient(180deg, #fff 0%, #fff8f5 30%, #fef6ff 100%);
}

html {
  scroll-behavior: smooth;
}

main [id] {
  scroll-margin-top: 72px;
}

.l-background {
  position: relative;
  background-image:
    url("../img/sr_footer_bg.svg"),
    url("../img/sr_background_left.svg"),
    url("../img/sr_background_right.svg");
  background-size: 100% auto, 18% auto, 18% auto;
  background-position: 0 100%, 0 0, 100% 0;
  background-repeat: no-repeat, repeat-y, repeat-y;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  background-color: var(--color-cream);
}

.l-container {
  width: min(1100px, 92%);
  margin: 0 auto;
}

.l-section {
  padding: var(--space-2xl) 0;
}

.l-section__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.l-header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(45, 42, 50, 0.06);
  z-index: 10;
}

.l-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-xs) 0;
  gap: var(--space-md);
}

.l-footer {
  background: radial-gradient(circle at top center, #e7fdff 0%, var(--color-sky) 100%);
}

.l-footer__inner {
  display: grid;
  place-items: center;
  text-align: center;
  gap: var(--space-xs);
}

@media (max-width: 768px) {
  .l-section__head {
    flex-direction: column;
    align-items: flex-start;
  }
}