*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
  line-height: 1.7;
  color: #1f2937;
  background-color: #fff;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

ul {
  list-style: none;
}

:root {
  --accent: #4f46e5;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --bg-soft: #f9fafb;
}

.inner {
  width: 100%;
  max-width: 960px;
  margin-inline: auto;
  padding-inline: 24px;
}

.section-title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 32px;
}


/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 10;
  width: 100%;
  background-color: #fff;
  border-bottom: 1px solid var(--border);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 16px;
}

.header__logo {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.02em;
}

.header__nav {
  display: flex;
  gap: 24px;
}

.header__nav a {
  font-size: 14px;
  color: var(--text-muted);
}

.header__nav a:hover {
  color: var(--accent);
}


/* Hero */
.hero {
  padding-block: 96px 80px;
  background-color: var(--bg-soft);
}

.hero__eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.hero__title {
  font-size: 40px;
  font-weight: 800;
  margin-bottom: 20px;
}

.hero__desc {
  max-width: 640px;
  font-size: 16px;
  color: var(--text-muted);
}


/* Skills */
.skills {
  padding-block: 80px;
}

.skills-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px 32px;
}

.skills-list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
}

.skills-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent);
}


/* Works */
.works {
  padding-block: 80px;
  border-top: 1px solid var(--border);
}

.work-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.work-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  background-color: #fff;
}

.work-card__tag {
  display: inline-block;
  margin-bottom: 8px;
  padding: 4px 10px;
  border-radius: 4px;
  background-color: var(--bg-soft);
  font-size: 12px;
  color: var(--text-muted);
}

.work-card__title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}

.work-card__desc {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.work-card__tech {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.work-card__tech li {
  padding: 4px 10px;
  border-radius: 999px;
  background-color: var(--bg-soft);
  font-size: 12px;
  color: #374151;
}

.work-card__link {
  display: inline-block;
  font-weight: 600;
  font-size: 14px;
  color: var(--accent);
  text-decoration: none;
}

.work-card__link:hover {
  text-decoration: underline;
}

.work-card__link[data-placeholder="true"] {
  color: var(--text-muted);
  pointer-events: none;
}


/* Contact */
.contact {
  padding-block: 80px;
  border-top: 1px solid var(--border);
}

.contact__desc {
  color: var(--text-muted);
  margin-bottom: 16px;
}

.contact__list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 15px;
}

.contact__list a {
  color: var(--accent);
}


/* Footer */
.footer {
  padding-block: 32px;
  text-align: center;
  border-top: 1px solid var(--border);
  background-color: var(--bg-soft);
}

.footer__text {
  font-size: 13px;
  color: var(--text-muted);
}


/* SP */
@media (max-width: 767px) {
  .hero {
    padding-block: 64px 48px;
  }

  .hero__title {
    font-size: 32px;
  }

  .skills-list {
    grid-template-columns: 1fr;
  }

  .work-card {
    padding: 24px;
  }

  .header__nav {
    gap: 16px;
  }

  .header__nav a {
    font-size: 13px;
  }
}