:root {
  --bg: #f5f5f1;
  --bg-alt: #eff2ee;
  --surface: rgba(255, 255, 255, 0.9);
  --surface-strong: #ffffff;
  --text: #253238;
  --muted: #65747b;
  --accent: #6f8883;
  --accent-strong: #566d68;
  --line: rgba(111, 136, 131, 0.18);
  --shadow: 0 18px 40px rgba(37, 50, 56, 0.08);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --container: min(1120px, calc(100% - 40px));
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 110px;
}

body {
  margin: 0;
  font-family: "Yu Gothic", "Yu Gothic Medium", "Hiragino Sans", "Meiryo", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(111, 136, 131, 0.15), transparent 30%),
    linear-gradient(180deg, #fafaf7 0%, var(--bg) 100%);
  line-height: 1.8;
  letter-spacing: 0.02em;
}

.page-particles {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.92;
}

.page-particles canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
}

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

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

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

p,
h1,
h2,
h3 {
  margin: 0;
}

main section {
  scroll-margin-top: 110px;
}

.container {
  width: var(--container);
  margin: 0 auto;
}

.section {
  padding: 100px 0;
}

.section-alt {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.42), rgba(255, 255, 255, 0.72));
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-strong);
  margin-bottom: 18px;
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: currentColor;
}

.section-head {
  max-width: 720px;
  margin-bottom: 48px;
}

.section-head h2,
.message-panel h2,
.contact-copy h2 {
  font-size: clamp(1.9rem, 2vw + 1rem, 2.8rem);
  line-height: 1.3;
  letter-spacing: 0.03em;
  margin-bottom: 14px;
}

.section-lead,
.hero-lead {
  color: var(--muted);
  font-size: 1.05rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  padding: 20px 0;
  background: rgba(245, 245, 241, 0.78);
  backdrop-filter: blur(12px);
  transition: padding 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  border-bottom: 1px solid transparent;
}

main,
.site-footer {
  position: relative;
  z-index: 1;
}

.site-header.is-scrolled {
  padding: 14px 0;
  border-color: rgba(111, 136, 131, 0.12);
  box-shadow: 0 10px 24px rgba(37, 50, 56, 0.05);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-brand {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
}

.site-brand__name {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.site-brand__label {
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.1em;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.95rem;
  transition: background-color 0.25s ease, color 0.25s ease;
}

.site-nav a:hover,
.site-nav a.is-active {
  color: var(--text);
  background: rgba(111, 136, 131, 0.1);
}

.hero {
  padding-top: 72px;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.8fr);
  gap: 32px;
  align-items: stretch;
}

.hero-copy,
.hero-panel,
.info-card,
.work-card,
.skill-card,
.message-panel,
.contact-card {
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.65);
  box-shadow: var(--shadow);
}

.hero-copy,
.hero-panel {
  border-radius: var(--radius-lg);
  padding: clamp(28px, 4vw, 44px);
}

.hero-copy {
  min-height: 100%;
}

.hero-copy h1 {
  font-size: clamp(2.5rem, 4vw + 1rem, 4.5rem);
  line-height: 1.18;
  letter-spacing: 0.04em;
  margin-bottom: 20px;
  text-wrap: balance;
}

.hero-lead {
  margin-bottom: 16px;
  font-size: 1.15rem;
}

.hero-text {
  max-width: 42rem;
  color: var(--muted);
  margin-bottom: 28px;
}

.button-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border-radius: 999px;
  background: var(--accent-strong);
  color: #ffffff;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: transform 0.25s ease, background-color 0.25s ease, box-shadow 0.25s ease;
  box-shadow: 0 14px 28px rgba(86, 109, 104, 0.22);
}

.button-primary:hover {
  transform: translateY(-1px);
  background: #465a56;
}

.hero-panel {
  position: relative;
  overflow: hidden;
}

.hero-panel::after {
  content: "";
  position: absolute;
  inset: auto -40px -60px auto;
  width: 180px;
  aspect-ratio: 1;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(111, 136, 131, 0.18), transparent 70%);
}

.hero-panel__block + .hero-panel__block {
  margin-top: 28px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.hero-panel__label,
.work-meta,
.contact-item__label {
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-strong);
}

.hero-panel h2 {
  font-size: 1.5rem;
  margin: 10px 0 12px;
}

.hero-panel p,
.hero-panel li,
.about-body p,
.info-card p,
.work-card p,
.skill-card p,
.message-panel p,
.contact-copy p,
.contact-note {
  color: var(--muted);
}

.status-list {
  display: grid;
  gap: 12px;
}

.status-list li {
  position: relative;
  padding-left: 18px;
}

.status-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  transform: translateY(-50%);
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  gap: 28px;
  align-items: start;
}

.about-body {
  display: grid;
  gap: 18px;
  font-size: 1rem;
}

.about-points {
  display: grid;
  gap: 18px;
}

.info-card,
.skill-card {
  border-radius: var(--radius-md);
  padding: 24px;
}

.info-card h3,
.skill-card h3,
.work-card h3 {
  font-size: 1.18rem;
  margin-bottom: 10px;
  letter-spacing: 0.03em;
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.work-card {
  border-radius: var(--radius-md);
  overflow: hidden;
}

.work-visual {
  position: relative;
  min-height: 190px;
  padding: 22px;
  display: flex;
  align-items: flex-end;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(37, 50, 56, 0.84);
}

.work-visual::before,
.work-visual::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.45);
}

.work-visual::before {
  width: 120px;
  height: 120px;
  right: -24px;
  top: -20px;
}

.work-visual::after {
  width: 72px;
  height: 72px;
  left: 22px;
  top: 26px;
}

.work-visual--stamp {
  background: linear-gradient(135deg, #e5ede8, #f5f7f4);
}

.work-visual--web {
  background: linear-gradient(135deg, #edf2f2, #f8f8f5);
}

.work-visual--personal {
  background: linear-gradient(135deg, #ebece6, #f7f7f2);
}

.work-visual span {
  position: relative;
  z-index: 1;
}

.work-card__body {
  padding: 24px;
}

.work-meta {
  margin-bottom: 10px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.tag-list li {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(111, 136, 131, 0.08);
  color: var(--text);
  font-size: 0.85rem;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.skills-note {
  margin-top: 24px;
  max-width: 760px;
}

.message-panel {
  border-radius: var(--radius-lg);
  padding: clamp(30px, 4vw, 48px);
  max-width: 840px;
}

.message-panel p + p {
  margin-top: 14px;
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 420px);
  gap: 28px;
  align-items: start;
}

.contact-card {
  border-radius: var(--radius-lg);
  padding: 28px;
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.contact-item + .contact-item {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.contact-item a {
  font-size: 1.05rem;
  color: var(--text);
  word-break: break-word;
}

.contact-item a:hover {
  color: var(--accent-strong);
}

.contact-note {
  margin-top: 26px;
  padding: 18px 20px;
  border-radius: var(--radius-sm);
  background: rgba(111, 136, 131, 0.08);
}

.site-footer {
  padding: 28px 0 44px;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px 20px;
  flex-wrap: wrap;
  padding-top: 22px;
  border-top: 1px solid rgba(111, 136, 131, 0.16);
}

.footer-brand {
  font-weight: 700;
  letter-spacing: 0.06em;
}

.footer-copy {
  color: var(--muted);
  font-size: 0.92rem;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 960px) {
  .section {
    padding: 84px 0;
  }

  .hero-grid,
  .about-grid,
  .contact-grid,
  .works-grid,
  .skills-grid {
    grid-template-columns: 1fr;
  }

  .works-grid {
    gap: 18px;
  }

  .contact-card {
    max-width: 640px;
  }
}

@media (max-width: 720px) {
  :root {
    --container: min(100% - 28px, 100%);
  }

  .site-header {
    padding: 14px 0;
  }

  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-nav {
    width: 100%;
  }

  .site-nav__list {
    justify-content: flex-start;
    gap: 6px;
  }

  .site-nav a {
    padding: 8px 12px;
    font-size: 0.9rem;
  }

  .hero {
    padding-top: 44px;
  }

  .hero-copy,
  .hero-panel,
  .message-panel,
  .contact-card {
    padding: 24px;
  }

  .work-visual {
    min-height: 160px;
  }

  .footer-inner {
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}