@charset "UTF-8";

/* ==============================
  CSS Variables
============================== */
html {
  font-size: 62.5%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--color-primary);
  font-family: var(--font-base);
  font-size: var(--fz-md);
  line-height: var(--lh-base);
  background: var(--color-base);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}
:root {
  /* Color */
  --color-base: #000;
  --color-main: #15151c;
  --color-primary: #ffffff;
  --color-secondary: #b8b8c8;
  --color-accent: #8f6cff;
  --color-border: rgba(255, 255, 255, 0.16);

  /* Font */
  --font-base: "Noto Sans JP", sans-serif;
  --font-en: "Times New Roman", serif;

  /* Font Size */
  --fz-xs: 1.2rem;
  --fz-sm: 1.4rem;
  --fz-md: 1.6rem;
  --fz-lg: 2.0rem;
  --fz-xl: 3.2rem;
  --fz-xxl: 5.6rem;

  /* Line Height */
  --lh-base: 1.8;
  --lh-heading: 1.4;

  /* Layout */
  --content-width: 1220px;
  --content-padding: 24px;
  --section-padding: 96px;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;

  /* Transition */
  --transition-base: 0.3s ease;
}
/* ==============================
  Base
============================== */


img {
  max-width: 100%;
  height: auto;
  vertical-align: bottom;
}

a {
  color: inherit;
  text-decoration: none;
  transition: opacity var(--transition-base);
}

a:hover {
  opacity: 0.7;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1,
h2,
p {
  margin: 0;
}

/* ==============================
  Layout
============================== */
.l-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 11, 15, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.l-header__inner {
  width: min(100% - var(--content-padding) * 2, var(--content-width));
  height: 72px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.l-header__logo {
  font-size: var(--fz-lg);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.l-header__nav-list {
  display: flex;
  align-items: center;
  gap: 32px;
}

.l-header__nav-item {
  font-size: var(--fz-sm);
  letter-spacing: 0.08em;
}

.l-main {
  overflow: hidden;
}

.l-footer__inner {
  width: min(100% - var(--content-padding) * 2, var(--content-width));
  margin: 0 auto;
  padding: 48px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.l-footer__logo {
  font-size: var(--fz-lg);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.l-footer__copyright {
  color: var(--color-secondary);
  font-size: var(--fz-xs);
}

/* ==============================
  Project
============================== */
.p-section {
  padding: var(--section-padding) 0;
}

.p-section__inner {
  width: min(100% - var(--content-padding) * 2, var(--content-width));
  margin: 0 auto;
}

.p-section__title {
  font-size: var(--fz-xl);
  line-height: var(--lh-heading);
  letter-spacing: 0.08em;
}

.p-section--mv .p-section__title {
  font-size: var(--fz-xxl);
}

.p-section__text {
  margin-top: 24px;
}

/* ==============================
  Responsive
============================== */
@media screen and (max-width: 767px) {
  :root {
    --content-padding: 20px;
    --section-padding: 72px;
    --fz-xl: 2.8rem;
    --fz-xxl: 4.0rem;
  }

  .l-header__nav {
    display: none;
  }

  .l-footer__inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 16px;
  }
}
.u-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);
  border: 0;
  white-space: nowrap;
}