:root {
  --bg: #000;
  --text: #fff;
  --muted: #b3b3b3;
  --atsumal: #e50914;
  --card-w: 180px;
  --card-h: 251px;
  --row-gap: 30px;
  --header-height: 68px;
}

* {
  box-sizing: border-box
}

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Noto Sans JP", system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif
}

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

/* ===== Header ===== */
.main-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: linear-gradient(180deg, rgba(0, 0, 0, .7) 0%, transparent 100%);
  transition: background .3s ease;
}

.main-header.scrolled {
  background: linear-gradient(0deg, transparent, #00000069);
}

.header__content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  padding: 0 4vw;
  max-width: 1200px;
  margin: 0 auto;
}
.header__logo{
  height: 53px;
}
.header__logo .logo {
  height: 53px;
  width: auto;
}

.header__nav .nav__list {
  display: flex;
  gap: 20px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__link {
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  transition: color .2s ease;
}

.nav__link:hover {
  color: var(--muted)
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.search-btn, .notifications-btn {
  background: none;
  border: none;
  color: var(--text);
  font-size: 18px;
  cursor: pointer;
  padding: 8px;
  border-radius: 4px;
  transition: background .2s ease;
}

.search-btn:hover, .notifications-btn:hover {
  background: rgba(255, 255, 255, .1);
}

.profile-avatar {
  width: 32px;
  height: 32px;
  border-radius: 4px;
  cursor: pointer;
  transition: opacity .2s ease;
}

.profile-avatar:hover {
  opacity: .8
}

@media (max-width: 768px) {
  .header__nav {
    display: none
  }

  .header__actions {
    gap: 12px
  }

  .search-btn, .notifications-btn {
    font-size: 16px;
    padding: 6px
  }
}

/* ===== Hero ===== */
.hero {
  position: relative;
  height: 62vh;
  min-height: 420px;
  max-height: 780px;
  overflow: hidden;
  display: grid;
  align-items: end;
  padding: 0 4vw 6vh;
  isolation: isolate;
  max-width: 1600px;
  margin: 0 auto;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: top/cover no-repeat;
  filter: brightness(.85);
  transition: opacity .3s ease;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, .0) 0%, rgba(0, 0, 0, .6) 55%, rgba(0, 0, 0, .9) 100%);
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: min(900px, 92vw);
}

.hero__title {
  font-size: clamp(28px, 6vw, 54px);
  line-height: 1.05;
  margin: 0 0 .5rem;
  letter-spacing: .02em;
  font-weight: 700;
  transition: opacity .3s ease;
}

.hero__meta {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
  margin: 0 0 1rem;
  transition: opacity .3s ease;
}

.badge {
  font-size: 12px;
  color: #ddd;
  border: 1px solid #444;
  padding: .2rem .45rem;
  border-radius: 4px;
  background: rgba(0, 0, 0, .35)
}

.hero__desc {
  color: #ddd;
  font-size: clamp(14px, 2.4vw, 18px);
  margin: 0 0 1.25rem;
  max-width: 70ch;
  transition: opacity .3s ease;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: var(--atsumal);
  color: #fff;
  font-weight: 700;
  padding: .8rem 1.2rem;
  border-radius: 8px;
  transition: transform .12s ease, filter .12s ease;
}

.btn:hover {
  transform: translateY(-1px);
  filter: brightness(1.05)
}

/* ===== Hero Indicators ===== */
.hero__indicators {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 2;
}

.hero__indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .4);
  cursor: pointer;
  transition: background .2s ease;
}

.hero__indicator.is-active {
  background: #fff
}

/* ===== Hero Fade Animations ===== */
.hero__bg--fade-out,
.hero__title--fade-out,
.hero__meta--fade-out,
.hero__desc--fade-out {
  opacity: 0;
}

.hero__bg--fade-in,
.hero__title--fade-in,
.hero__meta--fade-in,
.hero__desc--fade-in {
  opacity: 1;
}

/* ===== Rows ===== */
#rows{
  max-width: 1300px;
  margin: 0 auto;
}
.rows {
  padding: 0 0 40px
}

.row {
  margin-top: var(--row-gap)
}

.row__title {
  font-size: 20px;
  font-weight: 800;
  margin: 0 0 10px;
  padding: 0 4vw
}

.scroller {
  position: relative;
  padding: 0 56px;
}

.track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: var(--card-w);
  gap: 20px;
  overflow: auto;
  scroll-snap-type: x mandatory;
  scroll-padding: 56px;
  padding: 2px 0 17px 0px;
}

/* 人気の製品セクションのカード間隔を広げる */
.row:first-child .track {
  gap: 40px;
  padding-left: 20px;
}

.track::-webkit-scrollbar {
  height: 10px
}

.track::-webkit-scrollbar-thumb {
  background: #333;
  border-radius: 6px
}

.card {
  position: relative;
  border-radius: 8px;
  scroll-snap-align: start;
  background: #111;
  box-shadow: 0 6px 14px rgba(0, 0, 0, .35);
}

.card__img {
  width: var(--card-w);
  height: var(--card-h);
  background: center/cover no-repeat;
  transition: transform .18s ease;
  border-radius: 10px;
}

.card:hover .card__img {
  transform: scale(1.04)
}

.card__overlay {
  position: absolute;
  inset: auto 0 0 0;
  padding: 8px;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, .85) 80%);
  display: flex;
  align-items: flex-end;
  gap: 8px;
  opacity: 0;
  transition: opacity .2s ease;
  width: 105%;
  left: -2.5%;
  bottom: -2%;
}

.card:hover .card__overlay {
  opacity: 1;
}

.card__badge {
  font-size: 10px;
  padding: 2px 4px;
  background: var(--atsumal);
  border-radius: 2px
}

.card__name {
  font-size: 12px;
  font-weight: 800
}

.card__ranking {
  position: absolute;
    bottom: 10px;
    left: -34px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 68px;
    font-weight: 900;
    color: #ffffff;
    z-index: 3;
    color: white;
    text-shadow: 3px 3px 0 #000, -1px -1px 0 #000, 1px -1px 0 #000, -1px 1px 0 #000, 1px 1px 0 #000;
}

/* Nav buttons */
.nav {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.nav button {
  pointer-events: auto;
  position: absolute;
  top: 0;
  bottom: 0;
  width: 44px;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.nav .prev {
  left: 0
}

.nav .next {
  right: 0
}

.nav button::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 12px;
  height: 12px;
  border-top: 3px solid #fff;
  border-right: 3px solid #fff;
  transform: translate(-50%, -50%) rotate(45deg);
}

.nav .prev::after {
  transform: translate(-50%, -50%) rotate(-135deg)
}

.nav button:hover {
  background: linear-gradient(90deg, rgba(0, 0, 0, .55), transparent)
}

.nav .next:hover {
  background: linear-gradient(270deg, rgba(0, 0, 0, .55), transparent)
}

/* ===== Modal ===== */
.modal {
  position: fixed;
  inset: 0;
  display: none;
  z-index: 9999
}

.modal.is-open {
  display: block
}

.modal__bg {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, .72);
  backdrop-filter: saturate(120%) blur(2px);
}

.modal__panel {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  max-width: min(660px, 94vw);
  background: #151515;
  color: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(0, 0, 0, .6);
  animation: pop .16s ease;
}

@keyframes pop {
  from {
    transform: translate(-50%, -50%) scale(0.9);
    opacity: .6
  }

  to {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1
  }
}

.modal__close {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 36px;
  height: 36px;
  border-radius: 999px;
  border: 1px solid #888;
  background: rgba(0, 0, 0, .4);
  color: #fff;
  font-size: 20px;
  cursor: pointer;
}

.modal__hero img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16/10.5;
  object-fit: cover;
}

.modal__body {
  padding: 6px 40px 40px 40px;
}

.modal__title {
  margin: 0 0 10px;
  font-size: clamp(22px, 4.5vw, 40px);
  font-weight: 900;
  letter-spacing: .02em;
  display: none;
}

.modal__chips {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 0 0 12px
}

.chip {
  font-size: 12px;
  padding: .2rem .5rem;
  border-radius: 16px;
  background: #262626;
  border: 1px solid #3a3a3a;
  color: #ddd
}

.modal__desc {
  color: #ddd;
  line-height: 1.7;
  margin: 0 0 16px
}

.modal__actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap
}

.modal .btn {
  background: var(--atsumal)
}

.nav__link--download {
  color: white;
  background: var(--atsumal);
  padding: 10px 20px;
  border-radius: 5px;
}

/* ===== Responsive ===== */
@media (max-width: 960px) {
  :root {
    --card-w: 260px;
    --card-h: 148px;
  }
}

@media (max-width: 640px) {
  :root {
    --card-w: 130px;
    --card-h: 200px;
  }

  .scroller {
    padding: 0 24px
  }

  .track {
    scroll-padding: 24px
  }

  .nav button {
    width: 28px
  }
}