/* =============================================
   KUDOS VEIN — Official Website
   Dark / Minimal / Alternative
   ============================================= */

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --black:    #0A0A0A;
  --white:    #F5F5F5;
  --red:      #7A0019;
  --red-dim:  #4a0010;
  --gray-1:   #111111;
  --gray-2:   #1a1a1a;
  --gray-3:   #2a2a2a;
  --gray-4:   #444444;
  --gray-5:   #888888;

  --font-sans:  'Space Grotesk', sans-serif;
  --font-serif: 'Cormorant Garamond', serif;
  --font-mono:  'Space Mono', monospace;

  --nav-h: 64px;
  --section-gap: 120px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background: var(--black);
  color: var(--white);
  font-family: var(--font-sans);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

/* --- Film Grain --- */
.grain {
  position: fixed;
  inset: -50%;
  width: 200%;
  height: 200%;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-size: 128px 128px;
  animation: grain-shift 0.3s steps(1) infinite;
}

@keyframes grain-shift {
  0%   { transform: translate(0, 0); }
  10%  { transform: translate(-2%, -3%); }
  20%  { transform: translate(3%, 1%); }
  30%  { transform: translate(-1%, 4%); }
  40%  { transform: translate(4%, -2%); }
  50%  { transform: translate(-3%, 3%); }
  60%  { transform: translate(2%, -4%); }
  70%  { transform: translate(-4%, 2%); }
  80%  { transform: translate(3%, -1%); }
  90%  { transform: translate(-2%, 4%); }
  100% { transform: translate(1%, -2%); }
}

/* --- Container --- */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 40px;
}

/* --- Section Base --- */
.section {
  padding: var(--section-gap) 0;
}

.section-title {
  font-family: var(--font-mono);
  font-size: clamp(0.65rem, 1.2vw, 0.75rem);
  letter-spacing: 0.3em;
  color: var(--red);
  margin-bottom: 56px;
  text-transform: uppercase;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  color: var(--gray-5);
  text-transform: uppercase;
}

/* --- Reveal Animation --- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}

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

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 300;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  transition: background 0.4s ease, backdrop-filter 0.4s ease;
}

.nav.scrolled {
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-3);
}

.nav__logo {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  font-weight: 700;
  color: var(--white);
  transition: color 0.2s;
}

.nav__logo:hover {
  color: var(--red);
}

.nav__links {
  display: flex;
  gap: 36px;
  list-style: none;
}

.nav__links a {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--gray-5);
  transition: color 0.2s;
}

.nav__links a:hover {
  color: var(--white);
}

.nav__toggle {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 201;
  position: relative;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--white);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
  filter: brightness(0.55) saturate(0.7);
  will-change: transform;
  opacity: 0;
}

.hero__photo.is-revealed {
  animation: hero-kenburns 12s ease-out forwards;
}

@keyframes hero-kenburns {
  0%    { transform: scale(1.08); opacity: 0; }
  4%    { opacity: 0.9; }
  7%    { opacity: 0; }
  10%   { opacity: 0.8; }
  13%   { opacity: 0.1; }
  16%   { opacity: 1; }
  20%   { opacity: 0.4; }
  25%   { opacity: 1; }
  100%  { transform: scale(1.0);  opacity: 1; }
}

.hero__gradient {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to bottom,
      rgba(10,10,10,0.2) 0%,
      rgba(10,10,10,0.4) 45%,
      rgba(10,10,10,0.88) 80%,
      rgba(10,10,10,0.97) 100%),
    radial-gradient(ellipse 90% 55% at 50% 30%, rgba(122, 0, 25, 0.18) 0%, transparent 65%);
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 0 20px;
}

.hero__sub {
  font-family: var(--font-mono);
  font-size: clamp(0.6rem, 1.5vw, 0.75rem);
  letter-spacing: 0.4em;
  color: var(--gray-5);
  margin-bottom: 36px;
  text-transform: uppercase;
  transition-delay: 0.1s;
}

/* Hero logo */
.hero__logo-wrap {
  margin-bottom: 36px;
}

.hero__logo-img {
  max-width: min(420px, 72vw);
  height: auto;
  display: block;
  margin: 0 auto;
  opacity: 0;
  transition: none;
}

/* ECG reveal: JS controls the animation, CSS defines end state */
.hero__logo-img.ecg-done {
  opacity: 1;
  animation: logo-emerge 1.1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes logo-emerge {
  0%   { opacity: 0;   filter: brightness(5) blur(6px); }
  18%  { opacity: 1;   filter: brightness(2.2) blur(1.5px); }
  55%  { opacity: 1;   filter: brightness(1.1) blur(0); }
  100% { opacity: 1;   filter: drop-shadow(0 4px 28px rgba(122,0,25,0.3)); }
}


.hero__tagline {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(0.9rem, 2vw, 1.15rem);
  color: var(--gray-5);
  letter-spacing: 0.05em;
  transition-delay: 0.5s;
}

.hero__scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 40px;
  border: 1px solid var(--gray-3);
  border-radius: 12px;
  transition: border-color 0.3s;
}

.hero__scroll:hover {
  border-color: var(--red);
}

.hero__scroll span {
  display: block;
  width: 3px;
  height: 8px;
  background: var(--gray-5);
  border-radius: 2px;
  animation: scroll-dot 1.8s var(--ease) infinite;
}

@keyframes scroll-dot {
  0%   { opacity: 1; transform: translateY(-4px); }
  80%  { opacity: 0; transform: translateY(6px); }
  100% { opacity: 0; transform: translateY(6px); }
}

/* --- About --- */
.about {
  background: var(--gray-1);
}

.about__inner {
  max-width: 760px;
}

.about__label {
  margin-bottom: 40px;
}

.about__lead {
  font-family: var(--font-mono);
  font-size: clamp(0.75rem, 1.5vw, 0.85rem);
  letter-spacing: 0.15em;
  color: var(--red);
  margin-bottom: 28px;
  transition-delay: 0.1s;
}

.about__body {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  font-weight: 300;
  line-height: 2;
  color: var(--white);
  transition-delay: 0.2s;
}

.about__formed {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  color: var(--gray-4);
  margin-top: 40px;
  transition-delay: 0.3s;
}

.about__line {
  height: 1px;
  background: linear-gradient(to right, var(--red-dim), transparent);
  margin-top: 60px;
  transition-delay: 0.4s;
}

/* --- Music --- */
.music {
  background: var(--black);
}

.tracklist {
  border-top: 1px solid var(--gray-3);
  transition-delay: 0.1s;
}

.track {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid var(--gray-3);
  transition: background 0.2s;
  cursor: default;
}

.track:hover {
  background: rgba(122, 0, 25, 0.04);
}

.track:hover .track__title {
  color: var(--white);
}

.track__num {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--gray-4);
  min-width: 32px;
}

.track__title {
  font-family: var(--font-sans);
  font-size: clamp(1rem, 2.5vw, 1.3rem);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--gray-5);
  flex: 1;
  transition: color 0.2s;
}

.track__links {
  display: flex;
  gap: 12px;
}

.track__link {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  color: var(--gray-4);
  border: 1px solid var(--gray-3);
  padding: 4px 10px;
  border-radius: 2px;
  transition: color 0.2s, border-color 0.2s;
}

.track__link:hover {
  color: var(--white);
  border-color: var(--red);
}

.music__cta {
  margin-top: 48px;
  transition-delay: 0.3s;
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  padding: 14px 32px;
  transition: all 0.2s;
}

.btn--outline {
  border: 1px solid var(--gray-3);
  color: var(--gray-5);
}

.btn--outline:hover {
  border-color: var(--red);
  color: var(--white);
  background: rgba(122, 0, 25, 0.08);
}

.btn--sm {
  padding: 8px 20px;
  font-size: 0.6rem;
}

/* --- Video --- */
.video-section {
  background: var(--gray-1);
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
  transition-delay: 0.1s;
}

.video-item__thumb {
  aspect-ratio: 16 / 9;
  background: var(--gray-2);
  border: 1px solid var(--gray-3);
  overflow: hidden;
  position: relative;
  cursor: pointer;
  transition: border-color 0.3s;
}

.video-item__thumb:hover {
  border-color: var(--red);
}

.video-item__thumb:hover .video-item__placeholder span {
  color: var(--white);
  transform: scale(1.1);
}

.video-item__thumb--link {
  display: block;
  text-decoration: none;
}

.video-item__thumb--link img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease), filter 0.3s ease;
  filter: brightness(0.75);
}

.video-item__thumb--link:hover img {
  transform: scale(1.04);
  filter: brightness(0.6);
}

.video-item__play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

.video-item__play span {
  font-size: 1.5rem;
  color: var(--white);
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(245, 245, 245, 0.4);
  border-radius: 50%;
  backdrop-filter: blur(4px);
  background: rgba(10, 10, 10, 0.4);
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
  padding-left: 3px;
}

.video-item__thumb--link:hover .video-item__play span {
  background: var(--red);
  border-color: var(--red);
  transform: scale(1.1);
}

.video-item__placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.video-item__placeholder span {
  font-size: 1.5rem;
  color: var(--gray-4);
  transition: color 0.3s, transform 0.3s;
}

.video-item__title {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--gray-5);
  margin-top: 12px;
}

/* --- Live --- */
.live {
  background: var(--black);
}

.live-list {
  border-top: 1px solid var(--gray-3);
  transition-delay: 0.1s;
}

.live-item {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 20px 0;
  border-bottom: 1px solid var(--gray-3);
}

.live-item--empty {
  padding: 40px 0;
}

.live-item--empty p {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.95rem;
  color: var(--gray-4);
  letter-spacing: 0.05em;
}

.live-item__date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--red);
  min-width: 100px;
}

.live-item__info {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.live-item__venue {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--white);
}

.live-item__event {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--gray-4);
}

.live-item__ticket {
  border: 1px solid var(--red-dim);
  color: var(--red);
}

.live-item__ticket:hover {
  background: var(--red);
  color: var(--white);
  border-color: var(--red);
}

/* --- Members --- */
.members {
  background: var(--gray-1);
}

.members-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.member {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 16px;
}

.member:nth-child(1) { transition-delay: 0.05s; }
.member:nth-child(2) { transition-delay: 0.15s; }
.member:nth-child(3) { transition-delay: 0.25s; }
.member:nth-child(4) { transition-delay: 0.35s; }

.member__photo {
  width: 100%;
  aspect-ratio: 3 / 4;
  background: var(--gray-2);
  border: 1px solid var(--gray-3);
  overflow: hidden;
  position: relative;
  transition: border-color 0.3s;
}

.member__photo img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  filter: grayscale(30%) contrast(1.05);
  transition: filter 0.4s ease, transform 0.6s var(--ease);
}

.member:hover .member__photo img {
  filter: grayscale(0%) contrast(1.1);
  transform: scale(1.04);
}

.member:hover .member__photo {
  border-color: var(--red-dim);
}

.member__photo-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-size: 3rem;
  font-weight: 700;
  color: var(--gray-3);
  letter-spacing: 0;
}

.member__name {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--white);
}

.member__role {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  color: var(--gray-5);
  text-transform: uppercase;
}

/* --- Contact --- */
.contact {
  background: var(--black);
}

.contact__inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 48px;
  transition-delay: 0.1s;
}

.contact__text {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--gray-5);
  line-height: 2;
}

.sns-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.sns-link {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--gray-5);
  border: 1px solid var(--gray-3);
  padding: 12px 20px;
  transition: color 0.2s, border-color 0.2s;
}

.sns-link svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.sns-link:hover {
  color: var(--white);
  border-color: var(--red);
}

.contact__mail {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--gray-4);
  border-bottom: 1px solid var(--gray-3);
  padding-bottom: 4px;
  transition: color 0.2s, border-color 0.2s;
}

.contact__mail:hover {
  color: var(--white);
  border-color: var(--red);
}

/* --- Footer --- */
.footer {
  padding: 48px 0;
  border-top: 1px solid var(--gray-2);
}

.footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer__logo {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  font-weight: 700;
  color: var(--gray-4);
}

.footer__copy {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  color: var(--gray-4);
}

/* =============================================
   Subpage Layout
   ============================================= */

.subpage {
  padding-top: calc(var(--nav-h) + 80px);
  padding-bottom: var(--section-gap);
  min-height: 80vh;
}

.subpage__header {
  padding: 0 40px 64px;
  max-width: 1100px;
  margin: 0 auto;
  border-bottom: 1px solid var(--gray-3);
  margin-bottom: 64px;
}

.subpage__title {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 6vw, 4rem);
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--white);
}

/* Active nav link */
.nav__links a.is-active {
  color: var(--white);
}

/* --- Page Menu (Top) --- */
.page-menu {
  padding: 80px 0 100px;
  background: var(--black);
}

.page-menu__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--gray-3);
  border-left: 1px solid var(--gray-3);
}

.page-menu__item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 40px 32px;
  border-right: 1px solid var(--gray-3);
  border-bottom: 1px solid var(--gray-3);
  transition: background 0.25s ease;
  text-decoration: none;
}

.page-menu__item:hover {
  background: rgba(122, 0, 25, 0.07);
}

.page-menu__item:hover .page-menu__en {
  color: var(--white);
}

.page-menu__en {
  font-family: var(--font-mono);
  font-size: clamp(0.75rem, 1.5vw, 0.9rem);
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--gray-5);
  transition: color 0.25s;
}

.page-menu__ja {
  font-family: var(--font-serif);
  font-size: 0.8rem;
  color: var(--gray-4);
}

/* --- SNS Bar --- */
.sns-bar {
  padding: 32px 0;
  border-top: 1px solid var(--gray-2);
}

.sns-bar__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
}

.sns-bar a {
  color: var(--gray-4);
  transition: color 0.2s;
  display: flex;
  align-items: center;
}

.sns-bar a:hover {
  color: var(--white);
}

.sns-bar svg {
  width: 18px;
  height: 18px;
}

/* --- Info List --- */
.info-list {
  border-top: 1px solid var(--gray-3);
}

.info-item {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 24px 0;
  border-bottom: 1px solid var(--gray-3);
  transition: background 0.2s;
}

.info-item:hover {
  background: rgba(122, 0, 25, 0.04);
}

.info-item--empty {
  padding: 60px 0;
}

.info-item--empty p {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--gray-4);
}

.info-item__date {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--gray-5);
  min-width: 90px;
}

.info-item__body {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.info-item__cat {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.2em;
  color: var(--red);
  text-transform: uppercase;
}

.info-item__title {
  font-size: 1rem;
  font-weight: 500;
  color: var(--white);
}

/* --- Biography --- */
.bio-block {
  max-width: 760px;
  margin-bottom: 64px;
}

.bio-block__lead {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  color: var(--red);
  margin-bottom: 24px;
}

.bio-block__body {
  font-family: var(--font-serif);
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  font-weight: 300;
  line-height: 2;
  color: var(--white);
}

.bio-block__formed {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  color: var(--gray-4);
  margin-top: 32px;
}

.bio-divider {
  height: 1px;
  background: linear-gradient(to right, var(--red-dim), transparent);
  margin-bottom: 64px;
}

.bio-section-title {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  color: var(--red);
  margin-bottom: 40px;
  text-transform: uppercase;
}

/* --- Movie YT link --- */
.movie__yt-link {
  margin-top: 48px;
}

/* --- Coming Soon --- */
.coming-soon {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 120px 0;
  gap: 16px;
  border: 1px solid var(--gray-3);
}

.coming-soon__text {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  color: var(--gray-4);
  text-transform: uppercase;
}

.coming-soon__sub {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.95rem;
  color: var(--gray-4);
}

/* --- Nav Overlay --- */
.nav-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(10, 10, 10, 0.98);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.45s var(--ease);
}

.nav-overlay.is-open {
  opacity: 1;
  pointer-events: all;
}

.nav-overlay__links {
  list-style: none;
  padding: 0;
  margin: 0;
  width: 100%;
  max-width: 560px;
}

.nav-overlay__links li {
  border-bottom: 1px solid var(--gray-2);
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.4s var(--ease), transform 0.4s var(--ease);
}

.nav-overlay__links li:first-child {
  border-top: 1px solid var(--gray-2);
}

.nav-overlay.is-open .nav-overlay__links li {
  opacity: 1;
  transform: translateY(0);
}

.nav-overlay.is-open .nav-overlay__links li:nth-child(1) { transition-delay: 0.05s; }
.nav-overlay.is-open .nav-overlay__links li:nth-child(2) { transition-delay: 0.10s; }
.nav-overlay.is-open .nav-overlay__links li:nth-child(3) { transition-delay: 0.15s; }
.nav-overlay.is-open .nav-overlay__links li:nth-child(4) { transition-delay: 0.20s; }
.nav-overlay.is-open .nav-overlay__links li:nth-child(5) { transition-delay: 0.25s; }
.nav-overlay.is-open .nav-overlay__links li:nth-child(6) { transition-delay: 0.30s; }
.nav-overlay.is-open .nav-overlay__links li:nth-child(7) { transition-delay: 0.35s; }
.nav-overlay.is-open .nav-overlay__links li:nth-child(8) { transition-delay: 0.40s; }

.nav-overlay__links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 40px;
  font-family: var(--font-mono);
  font-size: clamp(0.8rem, 1.8vw, 1rem);
  font-weight: 700;
  letter-spacing: 0.25em;
  color: var(--gray-5);
  text-decoration: none;
  transition: color 0.2s, background 0.2s;
}

.nav-overlay__links a:hover,
.nav-overlay__links a.is-active {
  color: var(--white);
  background: rgba(122, 0, 25, 0.06);
}

.nav-overlay__en {
  flex: 1;
}

.nav-overlay__ja {
  font-family: var(--font-serif);
  font-size: 0.8rem;
  font-weight: 300;
  font-style: italic;
  letter-spacing: 0.05em;
  color: var(--gray-4);
}

.nav-overlay__links a:hover .nav-overlay__ja,
.nav-overlay__links a.is-active .nav-overlay__ja {
  color: var(--gray-5);
}

.nav__toggle.is-open span:first-child {
  transform: translateY(3.5px) rotate(45deg);
}

.nav__toggle.is-open span:last-child {
  transform: translateY(-3.5px) rotate(-45deg);
}

/* =============================================
   Responsive
   ============================================= */

@media (max-width: 900px) {
  .page-menu__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .subpage__header {
    padding: 0 24px 48px;
  }

  :root {
    --section-gap: 80px;
  }

  .members-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .container {
    padding: 0 24px;
  }

  .nav-overlay__links a {
    padding: 16px 24px;
  }
}

@media (max-width: 560px) {
  .page-menu__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-menu__item {
    padding: 24px 20px;
  }

  :root {
    --section-gap: 60px;
  }

  .hero__title {
    font-size: clamp(3.5rem, 20vw, 7rem);
  }

  .members-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .footer .container {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .track {
    gap: 16px;
  }

  .track__links {
    display: none;
  }

  .video-grid {
    grid-template-columns: 1fr;
  }

  .nav {
    padding: 0 20px;
  }

  .hero__photo {
    object-fit: contain;
    object-position: center center;
  }
}