/* ===================================
   Variables & Reset
   =================================== */
:root {
  --orange-50:  #fff7ed;
  --orange-100: #ffedd5;
  --orange-200: #fed7aa;
  --orange-300: #fdba74;
  --orange-400: #fb923c;
  --orange-500: #f97316;
  --orange-600: #ea580c;
  --orange-700: #c2410c;
  --orange-800: #9a3412;
  --orange-900: #7c2d12;

  --white:   #ffffff;
  --gray-50:  #fafafa;
  --gray-100: #f5f5f5;
  --gray-200: #e5e5e5;
  --gray-600: #525252;
  --gray-700: #404040;
  --gray-800: #262626;
  --gray-900: #171717;

  --font-sans: 'Noto Sans JP', sans-serif;
  --header-h: 64px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}

body {
  font-family: var(--font-sans);
  font-weight: 400;
  color: var(--gray-800);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a   { color: inherit; text-decoration: none; }
ul  { list-style: none; }

/* ===================================
   Utility
   =================================== */
.container {
  width: 90%;
  max-width: 1080px;
  margin: 0 auto;
}

.btn {
  display: inline-block;
  padding: 14px 40px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.05em;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
}

.btn--primary {
  background: var(--white);
  color: var(--orange-600);
}

.btn--primary:hover {
  background: var(--orange-100);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

/* ===================================
   Header
   =================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-h);
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px);
  z-index: 1000;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  width: 90%;
  max-width: 1080px;
  margin: 0 auto;
}

.header__logo {
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--orange-600);
  letter-spacing: 0.05em;
}

.header__nav ul {
  display: flex;
  gap: 32px;
}

.header__nav a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-700);
  position: relative;
  transition: color 0.3s;
}

.header__nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--orange-500);
  transition: width 0.3s;
}

.header__nav a:hover {
  color: var(--orange-600);
}

.header__nav a:hover::after {
  width: 100%;
}

/* Hamburger */
.header__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.header__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--gray-800);
  border-radius: 2px;
  transition: all 0.3s;
}

.header__hamburger.is-active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.header__hamburger.is-active span:nth-child(2) {
  opacity: 0;
}

.header__hamburger.is-active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ===================================
   Hero
   =================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--orange-500) 0%, var(--orange-700) 100%);
  overflow: hidden;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 80%, rgba(255,255,255,0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255,255,255,0.06) 0%, transparent 50%);
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: stretch;
  gap: 0;
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 0;
  min-height: 100vh;
}

.hero__content {
  flex: 1;
  color: var(--white);
  text-align: left;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 120px 60px 80px;
}

.hero__image {
  flex-shrink: 0;
  width: 50%;
  overflow: hidden;
  border-radius: 0;
  border: none;
  box-shadow: none;
}

.hero__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(1.15);
}

.hero__catchcopy {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  letter-spacing: 0.1em;
  line-height: 1.3;
  margin-bottom: 16px;
}

.hero__sub {
  font-size: clamp(1rem, 2vw, 1.25rem);
  font-weight: 300;
  letter-spacing: 0.08em;
  margin-bottom: 40px;
  color: #1a2744;
  opacity: 1;
}

/* ===================================
   Section common
   =================================== */
.section {
  padding: 100px 0;
}

.section:nth-child(even) {
  background: var(--gray-50);
}

.section__title {
  text-align: center;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 900;
  margin-bottom: 56px;
  position: relative;
  letter-spacing: 0.05em;
}

.section__title::after {
  content: '';
  display: block;
  width: 48px;
  height: 3px;
  background: var(--orange-500);
  margin: 16px auto 0;
  border-radius: 2px;
}

/* ===================================
   Profile
   =================================== */
.profile__grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 48px;
  align-items: start;
}

.profile__photo-img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: 12px;
}

.profile__name {
  font-size: 1.75rem;
  font-weight: 900;
  margin-bottom: 24px;
  color: var(--gray-900);
}

.profile__name span {
  display: block;
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--gray-600);
  margin-top: 4px;
}

.profile__data {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 12px 16px;
}

.profile__data dt {
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--orange-700);
}

.profile__data dd {
  font-size: 0.9375rem;
}

.profile__data dd ul {
  padding-left: 1.2em;
  list-style: disc;
}

.profile__data dd li {
  margin-bottom: 4px;
}

/* ===================================
   Achievements
   =================================== */
.achievements__timeline {
  display: flex;
  flex-direction: column;
  gap: 56px;
}

.achievements__year-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  background: linear-gradient(135deg, var(--orange-500), var(--orange-600));
  color: var(--white);
  border: none;
  border-radius: 12px;
  padding: 16px 28px;
  margin-bottom: 0;
  cursor: pointer;
  transition: background 0.3s, border-radius 0.3s;
}

.achievements__year-toggle.is-open {
  border-radius: 12px 12px 0 0;
}

.achievements__year-toggle:hover {
  background: linear-gradient(135deg, var(--orange-600), var(--orange-700));
}

.achievements__year-label {
  font-weight: 900;
  font-size: 1.25rem;
  letter-spacing: 0.05em;
}

.achievements__year-label span {
  font-weight: 400;
  font-size: 0.875rem;
  margin-left: 8px;
  opacity: 0.85;
}

.achievements__click {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  opacity: 0.85;
}

.achievements__arrow {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--white);
  border-bottom: 2px solid var(--white);
  transform: rotate(45deg);
  transition: transform 0.3s;
}

.achievements__year-toggle.is-open .achievements__arrow {
  transform: rotate(-135deg);
}

.achievements__cards-wrap {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s ease;
  background: var(--gray-50);
  border-radius: 0 0 12px 12px;
}

.achievements__cards-wrap.is-open {
  max-height: 2000px;
}

.achievements__desc {
  padding: 16px 24px;
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--orange-700);
  text-align: center;
  letter-spacing: 0.03em;
  background: var(--orange-50);
  border-left: 4px solid var(--orange-400);
  border-radius: 0 8px 8px 0;
}

.achievements__cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding: 24px;
}

.achievements__card {
  background: var(--white);
  border-radius: 12px;
  padding: 28px 24px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
  border-left: 4px solid var(--orange-400);
  transition: transform 0.3s, box-shadow 0.3s;
}

.achievements__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}

.achievements__card-icon {
  font-size: 1.75rem;
  margin-bottom: 12px;
}

.achievements__card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--gray-900);
}

.achievements__card p {
  font-size: 0.875rem;
  color: var(--gray-600);
  line-height: 1.7;
}

.achievements__card strong {
  color: var(--orange-600);
  font-size: 1.25rem;
}

/* ===================================
   Policy
   =================================== */
.policy__mission {
  text-align: center;
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--gray-700);
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}

.policy__vision {
  text-align: center;
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--orange-600);
  margin-bottom: 8px;
}

.policy__vision-sub {
  text-align: center;
  font-size: 0.9375rem;
  color: var(--gray-600);
  margin-bottom: 48px;
}

.policy__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.policy__card {
  background: var(--white);
  border-radius: 12px;
  padding: 36px 28px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
  transition: transform 0.3s, box-shadow 0.3s;
  border-top: 4px solid var(--orange-400);
}

.policy__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}

.policy__card--live  { border-top-color: #6b9e78; }
.policy__card--play  { border-top-color: #d4a04a; }
.policy__card--learn { border-top-color: #5ba3c9; }
.policy__card--work  { border-top-color: #3d6b8e; }

.policy__kanji {
  font-size: 3rem;
  font-weight: 900;
  line-height: 1;
  margin-bottom: 12px;
}

.policy__card--live .policy__kanji  { color: #6b9e78; }
.policy__card--play .policy__kanji  { color: #d4a04a; }
.policy__card--learn .policy__kanji { color: #5ba3c9; }
.policy__card--work .policy__kanji  { color: #3d6b8e; }

.policy__card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--gray-900);
}

.policy__card ul {
  padding-left: 1.2em;
  list-style: disc;
}

.policy__card li {
  font-size: 0.9375rem;
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: 4px;
}

.policy__foundation {
  margin-top: 32px;
  text-align: center;
  background: linear-gradient(135deg, #1a2744, #2a3d5e);
  color: var(--white);
  padding: 20px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 1.0625rem;
  letter-spacing: 0.05em;
}

/* ===================================
   Instagram
   =================================== */
.instagram__catchcopy {
  text-align: center;
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--orange-600);
  margin-bottom: 40px;
  letter-spacing: 0.08em;
}

.instagram__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.instagram__item {
  min-width: 0;
}

/* ===================================
   Contact
   =================================== */
.contact__lead {
  text-align: center;
  font-size: 1rem;
  color: var(--gray-600);
  margin-bottom: 32px;
}

.contact__box {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  background: var(--white);
  border: 2px solid var(--orange-200);
  border-radius: 12px;
  padding: 32px;
  max-width: 500px;
  margin: 0 auto;
  transition: box-shadow 0.3s;
}

.contact__box:hover {
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}

.contact__icon {
  font-size: 2rem;
  color: var(--orange-500);
}

.contact__email {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--orange-600);
  text-decoration: underline;
}

/* ===================================
   SNS
   =================================== */
.sns__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.sns__card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 32px 16px;
  background: var(--white);
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
  transition: transform 0.3s, box-shadow 0.3s;
}

.sns__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}

.sns__icon {
  font-size: 2rem;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--orange-100);
  color: var(--orange-600);
}

.sns__label {
  font-weight: 700;
  font-size: 0.9375rem;
}

.sns__id {
  font-size: 0.8125rem;
  color: var(--gray-600);
}

/* ===================================
   Footer
   =================================== */
.footer {
  background: var(--gray-900);
  color: var(--gray-200);
  padding: 48px 0;
  text-align: center;
}

.footer__name {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 8px;
}

.footer__copy {
  font-size: 0.75rem;
  opacity: 0.5;
}

/* ===================================
   Scroll Animation
   =================================== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===================================
   Responsive — Tablet (768px以下)
   =================================== */
@media (max-width: 768px) {
  .header__hamburger {
    display: flex;
  }

  .header__nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 70%;
    max-width: 320px;
    height: 100vh;
    background: var(--white);
    box-shadow: -4px 0 24px rgba(0,0,0,0.1);
    transition: right 0.3s ease;
    padding: 80px 32px 32px;
  }

  .header__nav.is-open {
    right: 0;
  }

  .header__nav ul {
    flex-direction: column;
    gap: 0;
  }

  .header__nav li {
    border-bottom: 1px solid var(--gray-200);
  }

  .header__nav a {
    display: block;
    padding: 16px 0;
    font-size: 1rem;
  }

  .header__nav a::after {
    display: none;
  }

  .hero__inner {
    flex-direction: column-reverse;
    text-align: center;
    gap: 32px;
    padding: 100px 0 60px;
  }

  .hero__content {
    text-align: center;
  }

  .hero__image {
    width: 100%;
    height: auto;
    aspect-ratio: 1;
  }

  .profile__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .profile__photo-img {
    max-width: 240px;
    margin: 0 auto;
  }

  .achievements__cards {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .policy__grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .instagram__grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .sns__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .section {
    padding: 72px 0;
  }
}

/* ===================================
   Responsive — Mobile (480px以下)
   =================================== */
@media (max-width: 480px) {
  .sns__grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 56px 0;
  }

  .section__title {
    margin-bottom: 40px;
  }

  .profile__data {
    grid-template-columns: 1fr;
    gap: 4px 0;
  }

  .profile__data dt {
    margin-top: 12px;
  }

  .policy__vision {
    font-size: 1.25rem;
  }
}