/* =========================================
   Tone8Music — 音の銀河
   深い宇宙の地に、星空（canvas）と星雲（グラデーション）。
   曲は惑星。色はジャケットごとの光（--glow）と、紫・水色・桃色の差し色だけ。
   ========================================= */

:root {
  --bg: #05060f;
  --bg-2: #0a0c1e;
  --ink: #eef0ff;
  --muted: #a7acce;
  --dim: #6e7399;
  --line: rgba(170, 180, 255, .12);
  --line-strong: rgba(170, 180, 255, .26);
  --glass: rgba(16, 18, 42, .55);
  --glass-hi: rgba(28, 31, 66, .62);
  --violet: #a294ff;
  --cyan: #6be4ff;
  --pink: #ff8ee0;
  --grad: linear-gradient(100deg, #c9bfff 0%, #8fd8ff 48%, #ffa3e3 100%);
  --grad-line: linear-gradient(90deg, rgba(162, 148, 255, 0), rgba(162, 148, 255, .7), rgba(107, 228, 255, .7), rgba(255, 142, 224, 0));
  --ok: #5be3a4;
  --ng: #ff6b81;
  --radius: 22px;
  --radius-sm: 14px;
  --font: "Zen Kaku Gothic New", "Hiragino Sans", "Noto Sans JP", system-ui, sans-serif;
  --display: "Unbounded", "Zen Kaku Gothic New", system-ui, sans-serif;
  --header-h: 72px;
  color-scheme: dark;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
  background: var(--bg);
}

body {
  margin: 0;
  min-height: 100vh;
  background: transparent;
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.85;
  letter-spacing: .02em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration-color: rgba(162, 148, 255, .55);
  text-underline-offset: 4px;
  transition: color .2s;
}

a:hover {
  color: var(--cyan);
}

button {
  font: inherit;
  color: inherit;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.3;
}

p {
  margin: 0;
}

::selection {
  background: rgba(162, 148, 255, .45);
}

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 8px;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 28px;
}

.container.narrow {
  max-width: 880px;
}

@media (max-width: 640px) {
  .container {
    padding: 0 16px;
  }
}

/* ---------- 宇宙の背景 ---------- */

#stars {
  position: fixed;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.nebula {
  position: fixed;
  inset: -20%;
  z-index: -3;
  pointer-events: none;
  /* 背景の写真：ESO/S. Brunier（天の川）・ESO（カリーナ星雲）CC BY 4.0 を色調整して使用 */
  background:
    url("assets/nebula-b.webp") no-repeat 2% 104% / min(62vmax, 1100px),
    radial-gradient(38% 30% at 78% 18%, rgba(118, 84, 255, .22), transparent 70%),
    radial-gradient(30% 26% at 12% 30%, rgba(40, 170, 255, .12), transparent 70%),
    radial-gradient(60% 50% at 50% 50%, rgba(30, 24, 80, .45), transparent 80%),
    linear-gradient(180deg, #05060f 0%, #070818 60%, #05060f 100%);
  background-blend-mode: screen, normal, normal, normal, normal;
  transform: translate3d(0, calc(var(--sy, 0) * -0.03px), 0);
  animation: drift 90s ease-in-out infinite alternate;
}

/* 斜めに横切る天の川 */
.nebula::before {
  content: "";
  position: absolute;
  left: 64%;
  top: 40%;
  width: max(150vmax, 1800px);
  aspect-ratio: 1900 / 617;
  transform: translate(-50%, -50%) rotate(-21deg);
  background: url("assets/milkyway.jpg") center / cover no-repeat;
  mix-blend-mode: screen;
  opacity: calc(.46 - var(--dim, 0) * .24);
  transition: opacity .4s linear;
  -webkit-mask: radial-gradient(ellipse 50% 46% at 50% 50%, #000 35%, transparent 72%);
  mask: radial-gradient(ellipse 50% 46% at 50% 50%, #000 35%, transparent 72%);
}

/* 右上の星雲 */
.nebula::after {
  content: "";
  position: absolute;
  right: 12%;
  top: 10%;
  width: min(54vmax, 900px);
  aspect-ratio: 1;
  background: url("assets/nebula-a.webp") center / cover no-repeat;
  mix-blend-mode: screen;
  opacity: calc(.42 - var(--dim, 0) * .24);
  transition: opacity .4s linear;
}

@keyframes drift {
  to {
    rotate: 2deg;
    scale: 1.04;
  }
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: .07;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- 文字の部品 ---------- */

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--display);
  font-size: .72rem;
  font-weight: 500;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 14px;
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
  opacity: .7;
}

.eyebrow .dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: currentColor;
}

.grad {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nw {
  white-space: nowrap;
}

.text-link {
  font-family: var(--display);
  font-size: .82rem;
  font-weight: 500;
  letter-spacing: .04em;
  text-decoration: none;
  color: var(--muted);
  white-space: nowrap;
}

.text-link:hover {
  color: var(--ink);
}

.note {
  margin-top: 32px;
  color: var(--muted);
  font-size: .92rem;
}

.block-title {
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
  font-weight: 700;
  margin-bottom: 24px;
}

/* ---------- ガラスの板 ---------- */

.glass {
  background: var(--glass);
  border: 1px solid var(--line);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  backdrop-filter: blur(14px) saturate(140%);
}

/* ---------- ボタン ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  font-size: .95rem;
  letter-spacing: .04em;
  text-decoration: none;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .3s ease, background .25s ease, border-color .25s ease, color .25s;
  white-space: nowrap;
}

.btn svg {
  width: 18px;
  height: 18px;
}

.btn:active {
  transform: scale(.97);
}

.btn-lg {
  min-height: 56px;
  padding: 0 30px;
  font-size: 1rem;
}

.btn-primary {
  background: #fff;
  color: #090a1c;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, .25), 0 12px 40px -12px rgba(162, 148, 255, .9);
}

.btn-primary:hover {
  color: #090a1c;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, .5), 0 16px 56px -10px rgba(107, 228, 255, .9);
  transform: translateY(-1px);
}

.btn-ghost {
  background: rgba(255, 255, 255, .04);
  border-color: var(--line-strong);
  color: var(--ink);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.btn-ghost:hover {
  color: var(--ink);
  border-color: rgba(255, 255, 255, .6);
  background: rgba(255, 255, 255, .08);
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition: background .2s, color .2s;
}

.icon-btn svg {
  width: 19px;
  height: 19px;
}

.icon-btn:hover {
  background: rgba(255, 255, 255, .08);
  color: var(--ink);
}

/* ---------- 見出しの帯 ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  transition: background .3s, border-color .3s;
  border-bottom: 1px solid transparent;
}

.site-header.scrolled,
.site-header.nav-open {
  background: rgba(5, 6, 15, .66);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  backdrop-filter: blur(18px) saturate(150%);
  border-bottom-color: var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 28px;
  height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.brand img {
  height: 42px;
  width: auto;
  filter: drop-shadow(0 0 14px rgba(162, 148, 255, .35));
  transition: filter .3s;
}

.brand:hover img {
  filter: drop-shadow(0 0 18px rgba(107, 228, 255, .6));
}

.footer-brand .brand img {
  height: 72px;
}

.nav {
  display: flex;
  gap: 6px;
  margin-left: auto;
}

.nav a {
  position: relative;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: .9rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--muted);
  white-space: nowrap;
}

.nav a:hover {
  color: var(--ink);
  background: rgba(255, 255, 255, .05);
}

.nav a[aria-current="page"] {
  color: var(--ink);
}

.nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 1px;
  width: 4px;
  height: 4px;
  margin-left: -2px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan);
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 8px;
}

.lang {
  display: flex;
  padding: 3px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .03);
}

.lang-btn {
  border: 0;
  background: transparent;
  padding: 4px 10px;
  border-radius: 999px;
  font-family: var(--display);
  font-size: .64rem;
  font-weight: 500;
  letter-spacing: .1em;
  color: var(--dim);
  cursor: pointer;
}

.lang-btn:hover {
  color: var(--ink);
}

.lang-btn[aria-pressed="true"] {
  background: rgba(255, 255, 255, .12);
  color: var(--ink);
}

.menu-btn {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, .03);
  cursor: pointer;
}

.menu-btn svg {
  width: 20px;
  height: 20px;
}

@media (max-width: 860px) {
  .header-inner {
    gap: 10px;
  }

  .header-tools {
    margin-left: auto;
  }

  .menu-btn {
    display: inline-grid;
    place-items: center;
  }

  .nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    padding: 8px 16px 20px;
    background: rgba(5, 6, 15, .92);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
  }

  .nav-open .nav {
    display: flex;
  }

  .nav a {
    padding: 16px 8px;
    font-size: 1.05rem;
    border-radius: 0;
    border-bottom: 1px solid var(--line);
  }

  .nav a:last-child {
    border-bottom: 0;
  }

  .nav a[aria-current="page"]::after {
    left: auto;
    right: 10px;
    bottom: 50%;
    margin: 0 0 -2px;
  }
}

@media (max-width: 380px) {
  .brand img {
    height: 36px;
  }

  .lang-btn {
    padding: 4px 7px;
  }
}

/* ---------- トップの最初の画面（木星が主役・中央そろえ） ---------- */

.hero {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: calc(100svh - var(--header-h));
  padding-top: 8px;
}

.hero-stage {
  position: relative;
  width: min(1320px, 100%);
  height: clamp(270px, 44vh, 470px);
  margin: 0 auto;
}

.hero-copy {
  position: relative;
  z-index: 4;
  text-align: center;
  margin-top: -1vh;
}

/* 文字の後ろの目立たない暗がり（天の川の上でも読めるように） */
.hero-copy::before {
  content: "";
  position: absolute;
  inset: -20% 0 -16%;
  z-index: -1;
  background: radial-gradient(ellipse 46% 60% at 50% 46%, rgba(5, 6, 15, .7), rgba(5, 6, 15, .35) 60%, transparent 80%);
  pointer-events: none;
}

.hero-title {
  font-size: clamp(1.7rem, 3.4vw, 2.9rem);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: .14em;
  text-shadow: 0 0 40px rgba(130, 120, 255, .45);
}

.hero-title .gap {
  display: inline-block;
  width: .9em;
}

.br-sp {
  display: none;
}

.hero-lead {
  margin: 14px auto 0;
  max-width: 36em;
  font-size: clamp(.92rem, 1.3vw, 1.02rem);
  color: var(--muted);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  font-size: .8rem;
  font-weight: 500;
  letter-spacing: .12em;
}

.hero-meta li {
  padding: 2px 18px;
}

.hero-meta li+li {
  border-left: 1px solid var(--line-strong);
}

.hero-copy .btn-row {
  justify-content: center;
  margin-top: 24px;
}

/* 四隅の計器のような小さな情報 */
.hud {
  position: absolute;
  z-index: 5;
  font-family: var(--display);
  font-size: .6rem;
  font-weight: 400;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--dim);
}

.hud-coord {
  top: 14px;
  left: 50%;
  display: flex;
  gap: 18px;
  margin: 0;
  transform: translateX(-50%);
  white-space: nowrap;
}

.hud-coord span {
  color: var(--muted);
  text-transform: none;
  letter-spacing: .16em;
}

.hud-now {
  left: max(28px, calc((100vw - 1200px) / 2));
  bottom: 96px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 7px 7px 7px 16px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(5, 6, 15, .55);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  color: var(--ink);
  text-transform: none;
  letter-spacing: .02em;
  cursor: pointer;
  transition: border-color .25s, background .25s;
}

.hud-now:hover {
  border-color: rgba(255, 255, 255, .55);
  background: rgba(20, 22, 50, .7);
}

.hud-now:empty {
  display: none;
}

.hud-label {
  text-transform: uppercase;
  font-size: .56rem;
  letter-spacing: .24em;
  color: var(--cyan);
}

.hud-title {
  font-size: .8rem;
  font-weight: 500;
}

.hud-play {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: #fff;
  color: #090a1c;
}

.hud-play svg {
  width: 12px;
  height: 12px;
  margin-left: 2px;
}

.hud-scroll {
  right: max(28px, calc((100vw - 1200px) / 2));
  bottom: 92px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.hud-scroll span {
  writing-mode: vertical-rl;
}

.hud-scroll i {
  display: block;
  width: 1px;
  height: 46px;
  background: linear-gradient(var(--cyan), transparent);
  animation: scroll-line 2.2s ease-in-out infinite;
  transform-origin: top;
}

@keyframes scroll-line {
  0% {
    transform: scaleY(0);
  }

  50% {
    transform: scaleY(1);
  }

  100% {
    transform: scaleY(1);
    opacity: 0;
  }
}

.hero .ticker {
  margin-top: auto;
}

@media (max-width: 760px) {
  .hero-stage {
    height: clamp(260px, 44vh, 380px);
  }

  .hero-title {
    letter-spacing: .1em;
  }

  .br-sp {
    display: inline;
  }

  .hero-title .gap {
    display: none;
  }

  .hero-meta {
    font-size: .7rem;
    letter-spacing: .06em;
    flex-wrap: nowrap;
  }

  .hero-meta li {
    padding: 2px 9px;
    white-space: nowrap;
  }

  .hud-coord {
    font-size: .5rem;
    gap: 10px;
  }

  .hud-now,
  .hud-scroll {
    display: none;
  }

  .hero .ticker {
    margin-top: 40px;
  }
}

/* ---------- 回る惑星 ---------- */

.orbit {
  position: absolute;
  inset: 0;
  isolation: isolate; /* 惑星の重なり順を軌道の中だけで決める */
  --planet: clamp(54px, 6.4vw, 96px);
}

.orbit-rings {
  position: absolute;
  z-index: 5;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.orbit-rings path {
  fill: none;
  stroke: rgba(205, 212, 255, .62);
  stroke-width: 1.3;
  vector-effect: non-scaling-stroke;
}

.orbit-rings path:nth-child(2) {
  stroke-dasharray: 3 6;
  stroke: rgba(120, 232, 255, .7);
}

/* 手前の半周の線は木星（50）の前 */
.orbit-rings.ring-front {
  z-index: 51;
}

/* 天の川の上でも見えるよう、線をほのかに光らせる */
.orbit-rings {
  filter: drop-shadow(0 0 3px rgba(150, 170, 255, .9)) drop-shadow(0 0 10px rgba(120, 140, 255, .5));
}

.orbit-core {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 50;
  width: clamp(150px, 20vw, 280px);
  aspect-ratio: 1;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  overflow: hidden;
  /* 表面：NASA の木星の地図（パブリックドメイン）を紺・紫・水色に塗り替えた物。横に流して自転させる */
  background: #0c1b3a url("assets/planet-core.webp") 0 50% / auto 100% repeat-x;
  box-shadow:
    inset 0 0 0 1px rgba(170, 190, 255, .25),
    inset -18px -22px 40px rgba(2, 3, 14, .85),
    inset 6px 8px 22px rgba(180, 200, 255, .25),
    0 0 40px rgba(130, 120, 255, .55),
    0 0 120px rgba(90, 80, 255, .35),
    0 0 240px rgba(107, 228, 255, .15);
  animation: rotate-surface 120s linear infinite;
}

/* 光の当たる側と影の側（球に見せる） */
.orbit-core::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background:
    radial-gradient(circle at 32% 28%, rgba(255, 255, 255, .22) 0%, rgba(255, 255, 255, 0) 32%),
    radial-gradient(circle at 36% 34%, rgba(0, 0, 0, 0) 38%, rgba(2, 3, 16, .55) 72%, rgba(2, 3, 16, .92) 100%);
}

/* ふちの大気 */
.orbit-core::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  box-shadow: inset 0 0 18px 2px rgba(120, 170, 255, .45);
  pointer-events: none;
}

@keyframes rotate-surface {
  to {
    background-position: 200% 50%;
  }
}

.orbit-core img {
  position: absolute;
  z-index: 1;
  left: 50%;
  top: 50%;
  width: 58%;
  height: auto;
  transform: translate(-50%, -50%);
  /* 新しいロゴ（立体の白い文字＋カラフルな 8）：木星の白い帯に溶けないよう、白い光ではなく暗い縁と影で浮かせ、光はうっすら */
  filter: drop-shadow(0 0 1.5px rgba(4, 3, 18, .95)) drop-shadow(0 0 6px rgba(4, 3, 18, .85)) drop-shadow(0 0 18px rgba(120, 100, 255, .45));
}

.planet {
  position: absolute;
  width: var(--planet);
  height: var(--planet);
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  transform: translate(-50%, -50%) scale(var(--s, 1));
  transition: filter .3s;
  will-change: left, top, transform;
}

.planet img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, .18), 0 0 26px -2px var(--glow);
}

.planet::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: radial-gradient(circle at 32% 28%, rgba(255, 255, 255, .28) 0%, transparent 38%, rgba(4, 4, 18, .55) 82%);
  pointer-events: none;
}

.planet-label {
  position: absolute;
  left: 50%;
  top: calc(100% + 8px);
  transform: translateX(-50%) scale(calc(1 / var(--s, 1)));
  transform-origin: top center;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(5, 6, 15, .8);
  border: 1px solid var(--line);
  font-family: var(--display);
  font-size: .64rem;
  letter-spacing: .04em;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s;
}

.planet:hover .planet-label,
.planet:focus-visible .planet-label,
.planet.is-playing .planet-label {
  opacity: 1;
}

.planet:hover img,
.planet.is-playing img {
  box-shadow: 0 0 0 2px rgba(255, 255, 255, .7), 0 0 40px 4px var(--glow);
}

.planet.is-playing::after {
  content: "";
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  border: 1px solid var(--glow);
  animation: ping 1.8s ease-out infinite;
}

@keyframes ping {
  from {
    opacity: .9;
    transform: scale(.9);
  }

  to {
    opacity: 0;
    transform: scale(1.5);
  }
}



/* ---------- 曲名の流れる帯 ---------- */

.ticker {
  position: relative;
  margin-top: clamp(32px, 5vw, 56px);
  padding: 18px 0;
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  -webkit-mask: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
  mask: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}

.ticker-track {
  display: flex;
  align-items: center;
  gap: 36px;
  width: max-content;
  animation: ticker 48s linear infinite;
}

.ticker-track span {
  font-family: var(--display);
  font-weight: 300;
  font-size: clamp(1.1rem, 2.4vw, 1.7rem);
  letter-spacing: .04em;
  color: var(--muted);
  white-space: nowrap;
}

.ticker-track svg {
  flex: none;
  width: 14px;
  height: 14px;
  color: var(--violet);
}

@keyframes ticker {
  to {
    transform: translateX(-50%);
  }
}

/* ---------- 下のページの見出し ---------- */

.page-hero {
  padding: clamp(56px, 8vw, 100px) 0 clamp(28px, 4vw, 48px);
}

.page-hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 900;
  letter-spacing: .02em;
}

.page-lead {
  margin-top: 18px;
  max-width: 40em;
  color: var(--muted);
  font-size: 1.05rem;
}

/* ---------- 区切り ---------- */

.section {
  padding: clamp(36px, 5vw, 64px) 0;
}

.section-tight {
  padding-top: 0;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 32px;
}

.section-head h2 {
  font-size: clamp(1.7rem, 3.2vw, 2.5rem);
  font-weight: 700;
  letter-spacing: .04em;
}

/* ---------- 新着の大きいカード ---------- */

.feature {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 420px) 1fr;
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  padding: clamp(22px, 3.4vw, 40px);
  border-radius: 32px;
  background: linear-gradient(140deg, rgba(36, 32, 84, .55), rgba(10, 12, 30, .55));
  border: 1px solid var(--line);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  overflow: hidden;
}

.feature::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 1px;
  background: var(--grad-line);
}

.feature-art {
  position: relative;
}

.feature-halo {
  position: absolute;
  inset: -18%;
  border-radius: 50%;
  background: radial-gradient(circle, var(--glow) 0%, transparent 62%);
  opacity: .38;
  filter: blur(30px);
}

.feature-art img {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover; /* 自動で足した曲の横長の画像も正方形に */
  border-radius: 24px;
  box-shadow: 0 30px 80px -30px rgba(0, 0, 0, .9), 0 0 0 1px rgba(255, 255, 255, .1);
}

.feature-title {
  font-family: var(--display);
  font-size: clamp(2rem, 4.6vw, 3.8rem);
  font-weight: 600;
  letter-spacing: -.01em;
  line-height: 1.08;
}

:lang(ja) .feature-title {
  letter-spacing: 0;
}

.feature-sub {
  margin-top: 8px;
  color: var(--muted);
  font-family: var(--display);
  font-weight: 300;
  letter-spacing: .04em;
}

.feature-desc {
  margin-top: 18px;
  color: var(--muted);
}

.feature .tags {
  margin-top: 20px;
}

@media (max-width: 760px) {
  .feature {
    grid-template-columns: 1fr;
  }
}

/* ---------- タグ ---------- */

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag {
  padding: 2px 11px;
  border-radius: 999px;
  border: 1px solid rgba(162, 148, 255, .3);
  background: rgba(162, 148, 255, .12);
  color: #d6d0ff;
  font-size: .76rem;
  font-weight: 700;
  line-height: 1.9;
}

.tag-plain {
  border-color: var(--line);
  background: rgba(255, 255, 255, .04);
  color: var(--muted);
  font-family: var(--display);
  font-weight: 400;
}

.new-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 2px 9px;
  border-radius: 999px;
  background: var(--grad);
  color: #090a1c;
  font-family: var(--display);
  font-size: .6rem;
  font-weight: 600;
  letter-spacing: .12em;
}

.new-badge.inline {
  position: static;
  display: inline-block;
  margin-left: 8px;
  vertical-align: 3px;
}

/* ---------- 曲のカード（トップ） ---------- */

.track-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(18px, 2.8vw, 36px);
}

.track-card {
  transition: transform .35s cubic-bezier(.2, .8, .2, 1);
}

.track-card:hover {
  transform: translateY(-6px);
}

.track-art,
.row-art {
  position: relative;
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: var(--bg-2);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 1 / 1;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, .08);
  transition: box-shadow .35s;
}

.track-card:hover .track-art,
.track-card.is-playing .track-art {
  box-shadow: 0 0 0 1px rgba(255, 255, 255, .22), 0 24px 70px -18px var(--glow);
}

.track-art img,
.row-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .6s cubic-bezier(.2, .8, .2, 1);
}

.track-card:hover .track-art img {
  transform: scale(1.05);
}

.play-badge {
  position: absolute;
  right: 14px;
  bottom: 14px;
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: #fff;
  color: #090a1c;
  box-shadow: 0 10px 30px -6px var(--glow, rgba(0, 0, 0, .5));
  opacity: 0;
  transform: translateY(10px);
  transition: opacity .25s, transform .25s;
}

.play-badge svg {
  width: 20px;
  height: 20px;
  margin-left: 2px;
}

.track-art:hover .play-badge,
.track-art:focus-visible .play-badge,
.is-playing .track-art .play-badge {
  opacity: 1;
  transform: none;
}

@media (hover: none) {
  .track-art .play-badge {
    opacity: 1;
    transform: none;
    width: 42px;
    height: 42px;
  }
}

.track-card-body {
  display: flex;
  gap: 14px;
  margin-top: 16px;
}

.track-num {
  font-family: var(--display);
  font-size: .72rem;
  font-weight: 400;
  color: var(--dim);
  padding-top: 5px;
}

.track-card .track-title {
  font-family: var(--display);
  font-size: 1.08rem;
  font-weight: 500;
  letter-spacing: 0;
}

:lang(ja) .track-card .track-title,
.track-card .track-title {
  font-family: var(--display), var(--font);
}

.track-meta {
  margin-top: 2px;
  color: var(--muted);
  font-size: .84rem;
}

.meta-time {
  margin-left: 10px;
  padding-left: 10px;
  border-left: 1px solid var(--line-strong);
  font-family: var(--display);
  font-weight: 300;
  font-size: .8rem;
}

.is-playing .track-title {
  color: var(--cyan);
}

@media (max-width: 760px) {
  .track-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px 14px;
  }

  .track-card .track-title {
    font-size: .95rem;
  }

  .track-num {
    display: none;
  }

  .track-card-body {
    margin-top: 12px;
  }
}

/* ---------- ガラスの板（共通）・手順 ---------- */

.okng-col,
.summary,
.contact-card,
.listen-card,
.credit-sample,
.track-list,
.ng-list {
  background: var(--glass);
  border: 1px solid var(--line);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  backdrop-filter: blur(14px) saturate(140%);
}

.steps {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.steps::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 1px;
  background: var(--grad-line);
}

.step {
  position: relative;
  padding: 34px 4px 0;
}

.step::before {
  content: "";
  position: absolute;
  left: 4px;
  top: -4px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 12px var(--cyan), 0 0 0 4px rgba(107, 228, 255, .15);
}

.step-num {
  display: block;
  font-family: var(--display);
  font-size: 2.4rem;
  font-weight: 300;
  line-height: 1;
  margin-bottom: 18px;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.step h3 {
  font-size: 1.08rem;
  font-weight: 900;
  margin-bottom: 8px;
}

.step p {
  color: var(--muted);
  font-size: .92rem;
}

@media (max-width: 960px) {
  .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    row-gap: 40px;
  }

  .steps::before {
    display: none;
  }

  .step {
    border-top: 1px solid var(--line);
  }
}

@media (max-width: 520px) {
  .steps {
    grid-template-columns: 1fr;
    row-gap: 28px;
  }
}

/* ---------- 大きい帯 ---------- */

.band {
  position: relative;
  min-height: 380px;
  display: flex;
  align-items: center;
  padding: clamp(40px, 6vw, 80px);
  border-radius: 36px;
  border: 1px solid var(--line-strong);
  /* カードの地は薄く、後ろの天の川をすりガラスのようにぼかして透かす */
  background: rgba(255, 255, 255, .02);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  overflow: hidden;
}

/* 右からのぞく大きな惑星（中心の惑星と同じ表面） */
.band-planet {
  position: absolute;
  right: -16%;
  top: 50%;
  width: min(64%, 740px);
  aspect-ratio: 1;
  transform: translateY(-50%);
  border-radius: 50%;
  background: #0c1b3a url("assets/planet-core.webp") 0 50% / auto 100% repeat-x;
  filter: saturate(.85);
  box-shadow:
    inset 26px 0 34px -14px rgba(190, 210, 255, .75),
    -10px 0 40px -14px rgba(120, 150, 255, .45);
  animation: rotate-surface 240s linear infinite;
}

/* 夜側を暗くして、左のふちだけ光る三日月にする */
.band-planet::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: radial-gradient(circle at 60% 50%, rgba(4, 5, 18, .96) 0%, rgba(4, 5, 18, .9) 58%, rgba(4, 5, 18, .45) 68%, rgba(4, 5, 18, 0) 77%);
}

.band-copy {
  position: relative;
  z-index: 1;
  max-width: 560px;
  text-shadow: 0 1px 18px rgba(5, 6, 15, .7);
}

.band-copy .btn {
  text-shadow: none;
}

@media (max-width: 760px) {
  .band {
    min-height: 460px;
    align-items: flex-start;
  }

  .band-planet {
    width: 130%;
    right: -55%;
    top: auto;
    bottom: -75%;
    transform: none;
  }
}



.band h2 {
  font-size: clamp(1.7rem, 3.4vw, 2.6rem);
  font-weight: 700;
  letter-spacing: .04em;
  line-height: 1.3;
}

.band p {
  margin-top: 14px;
  max-width: 34em;
  color: rgba(238, 240, 255, .78);
}

/* ---------- これまでの曲（横 5 列） ---------- */

.track-grid.cols-5 {
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 24px 20px;
}

.cols-5 .track-title {
  font-size: .98rem;
}

.cols-5 .track-num {
  display: none;
}

.cols-5 .track-card-body {
  margin-top: 14px;
}

.cols-5 .play-badge {
  width: 44px;
  height: 44px;
  right: 10px;
  bottom: 10px;
}

@media (max-width: 1100px) {
  .track-grid.cols-5 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .track-grid.cols-5 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 使える所（左に見出し・右に一覧） ---------- */

.split {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  gap: clamp(32px, 6vw, 96px);
  align-items: start;
}

.split-head {
  position: sticky;
  top: calc(var(--header-h) + 40px);
}

.split-head h2 {
  font-size: clamp(1.7rem, 3.2vw, 2.5rem);
  font-weight: 700;
  letter-spacing: .04em;
}

.split-lead {
  margin-top: 20px;
  color: var(--muted);
  max-width: 24em;
}

.use-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-bottom: 1px solid var(--line);
}

.use-list li {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 12px;
  padding: 30px 0;
  border-top: 1px solid var(--line);
  transition: padding .3s ease;
}

.use-list li:hover {
  padding-left: 8px;
}

.use-num {
  font-family: var(--display);
  font-size: 1.9rem;
  font-weight: 300;
  line-height: 1;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.use-list h3 {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: .04em;
  margin-bottom: 6px;
}

.use-list p {
  color: var(--muted);
  font-size: .95rem;
}

@media (max-width: 900px) {
  .split {
    grid-template-columns: 1fr;
  }

  .split-head {
    position: static;
  }

  .use-list li {
    grid-template-columns: 56px minmax(0, 1fr);
    padding: 24px 0;
  }
}

/* ---------- ルール（1 枚の板を 3 つに区切る） ---------- */

.rule-panel {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-radius: 28px;
  border: 1px solid var(--line);
  background: var(--glass);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  backdrop-filter: blur(14px) saturate(140%);
  overflow: hidden;
}

.rule {
  padding: clamp(28px, 3.4vw, 44px);
}

.rule+.rule {
  border-left: 1px solid var(--line);
}

.rule-mark {
  display: inline-grid;
  place-items: center;
  min-width: 44px;
  height: 26px;
  padding: 0 10px;
  margin-bottom: 20px;
  border-radius: 999px;
  font-family: var(--display);
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--ok);
  border: 1px solid rgba(91, 227, 164, .45);
  background: rgba(91, 227, 164, .1);
  box-shadow: 0 0 18px -4px rgba(91, 227, 164, .6);
}

.rule-ng .rule-mark,
.okng-ng .rule-mark {
  color: var(--ng);
  border-color: rgba(255, 107, 129, .45);
  background: rgba(255, 107, 129, .1);
  box-shadow: 0 0 18px -4px rgba(255, 107, 129, .6);
}

.rule h3 {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: .04em;
  margin-bottom: 10px;
}

.rule p {
  color: var(--muted);
  font-size: .94rem;
}

@media (max-width: 760px) {
  .rule-panel {
    grid-template-columns: 1fr;
  }

  .rule+.rule {
    border-left: 0;
    border-top: 1px solid var(--line);
  }
}

/* ---------- BGM 一覧 ---------- */

.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 22px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  padding: 6px 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .03);
  font-size: .86rem;
  font-weight: 700;
  color: var(--muted);
  cursor: pointer;
  transition: all .2s;
}

.chip:hover {
  color: var(--ink);
  border-color: var(--line-strong);
}

.chip[aria-pressed="true"] {
  background: #fff;
  border-color: #fff;
  color: #090a1c;
}

.search {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: min(300px, 100%);
  padding: 0 18px;
  height: 46px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .03);
  color: var(--muted);
}

.search:focus-within {
  border-color: var(--violet);
  box-shadow: 0 0 0 4px rgba(162, 148, 255, .15);
}

.search svg {
  width: 18px;
  height: 18px;
  flex: none;
}

.search input {
  flex: 1;
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
  font: inherit;
  font-size: .95rem;
  color: var(--ink);
}

.search input::placeholder {
  color: var(--dim);
}

.track-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-radius: 26px;
  overflow: hidden;
}

.track-row {
  position: relative;
  display: grid;
  grid-template-columns: 2.4rem 76px minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 20px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
  transition: background .25s;
}

.track-row::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18%;
  bottom: 18%;
  width: 2px;
  border-radius: 2px;
  background: var(--glow);
  box-shadow: 0 0 12px var(--glow);
  opacity: 0;
  transition: opacity .25s;
}

.track-row:last-child {
  border-bottom: 0;
}

.track-row:hover,
.track-row.is-playing {
  background: rgba(255, 255, 255, .035);
}

.track-row:hover::before,
.track-row.is-playing::before {
  opacity: 1;
}

.row-num {
  font-family: var(--display);
  font-size: .78rem;
  color: var(--dim);
  text-align: center;
}

.row-art {
  width: 76px;
  border-radius: 14px;
}

.row-art .play-badge {
  inset: 0;
  width: auto;
  height: auto;
  border-radius: 0;
  background: rgba(5, 6, 15, .45);
  color: #fff;
  box-shadow: none;
  transform: none;
}

.row-art:hover .play-badge,
.row-art:focus-visible .play-badge {
  opacity: 1;
}

.eq {
  position: absolute;
  inset: 0;
  display: none;
  align-items: flex-end;
  justify-content: center;
  gap: 4px;
  padding-bottom: 20px;
  background: rgba(5, 6, 15, .5);
}

.eq i,
.eq-mini b {
  display: block;
  width: 4px;
  border-radius: 2px;
  background: #fff;
  animation: eq 1s ease-in-out infinite;
  transform-origin: bottom;
}

.eq i {
  height: 26px;
}

.eq i:nth-child(2),
.eq-mini b:nth-child(2) {
  animation-delay: -.35s;
}

.eq i:nth-child(3),
.eq-mini b:nth-child(3) {
  animation-delay: -.7s;
}

@keyframes eq {

  0%,
  100% {
    transform: scaleY(.25);
  }

  50% {
    transform: scaleY(1);
  }
}

.is-playing .eq {
  display: flex;
}

.row-main .track-title {
  font-family: var(--display), var(--font);
  font-size: 1.05rem;
  font-weight: 500;
}

.track-sub {
  color: var(--dim);
  font-size: .8rem;
  font-family: var(--display), var(--font);
  font-weight: 300;
  letter-spacing: .03em;
}

.row-main .tags {
  margin-top: 8px;
}

.row-time {
  font-family: var(--display);
  font-size: .85rem;
  font-weight: 300;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.row-actions {
  display: flex;
  gap: 2px;
}

.empty {
  padding: 48px;
  text-align: center;
  color: var(--muted);
}

@media (max-width: 640px) {
  .track-row {
    grid-template-columns: 64px minmax(0, 1fr) auto;
    gap: 14px;
    padding: 12px 12px 12px 14px;
  }

  .row-num,
  .row-time {
    display: none;
  }

  .row-art {
    width: 64px;
  }

  .row-actions {
    flex-direction: column;
  }

  .search {
    width: 100%;
  }
}

/* ---------- 聴く場所 ---------- */

.listen-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.listen-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 26px 28px;
  border-radius: var(--radius);
  text-decoration: none;
  transition: border-color .25s, transform .25s;
}

.listen-card[hidden] {
  display: none;
}

.listen-card strong {
  font-family: var(--display);
  font-size: 1.1rem;
  font-weight: 500;
}

.listen-card strong::after {
  content: " ↗";
  color: var(--cyan);
}

.listen-card span {
  color: var(--muted);
  font-size: .88rem;
}

.listen-card:hover {
  color: var(--ink);
  border-color: var(--line-strong);
  transform: translateY(-3px);
}

/* ---------- クレジットの見本 ---------- */

.credit-box {
  display: grid;
  grid-template-columns: 1fr minmax(0, 400px);
  gap: 24px 44px;
  align-items: center;
  padding: clamp(24px, 3.4vw, 40px);
  border-radius: 28px;
  border: 1px dashed var(--line-strong);
}

.credit-box h2 {
  font-size: 1.35rem;
  font-weight: 900;
  margin-bottom: 8px;
}

.credit-box p {
  color: var(--muted);
}

.credit-sample {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 12px 12px 20px;
  border-radius: 18px;
}

.credit-sample pre {
  flex: 1;
  margin: 0;
  font-family: var(--display), monospace;
  font-size: .82rem;
  font-weight: 300;
  line-height: 1.8;
  white-space: pre-wrap;
  word-break: break-all;
}

@media (max-width: 760px) {
  .credit-box {
    grid-template-columns: 1fr;
  }
}

/* ---------- FAQ ---------- */

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

.okng-col {
  padding: 28px;
  border-radius: var(--radius);
}

.okng-col h2 {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.15rem;
  font-weight: 900;
  margin-bottom: 14px;
}

.okng-col .rule-mark {
  margin: 0;
}

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

.okng-col li {
  position: relative;
  padding: 10px 0 10px 26px;
  border-bottom: 1px solid var(--line);
  font-size: .94rem;
}

.okng-col li:last-child {
  border-bottom: 0;
}

.okng-col li::before {
  position: absolute;
  left: 2px;
  top: 10px;
  font-weight: 900;
}

.okng-ok li::before {
  content: "✓";
  color: var(--ok);
}

.okng-ng li::before {
  content: "✕";
  color: var(--ng);
}

@media (max-width: 720px) {
  .okng {
    grid-template-columns: 1fr;
  }
}

.accordion {
  border-top: 1px solid var(--line);
}

.accordion details {
  border-bottom: 1px solid var(--line);
}

.accordion summary {
  position: relative;
  padding: 22px 52px 22px 0;
  font-weight: 700;
  font-size: 1.02rem;
  cursor: pointer;
  list-style: none;
  transition: color .2s;
}

.accordion summary:hover {
  color: var(--cyan);
}

.accordion summary::-webkit-details-marker {
  display: none;
}

.accordion summary::before {
  content: "Q";
  margin-right: 14px;
  font-family: var(--display);
  font-weight: 400;
  color: var(--violet);
}

.accordion summary::after {
  content: "";
  position: absolute;
  right: 10px;
  top: 50%;
  width: 9px;
  height: 9px;
  margin-top: -6px;
  border-right: 1.5px solid var(--muted);
  border-bottom: 1.5px solid var(--muted);
  transform: rotate(45deg);
  transition: transform .25s;
}

.accordion details[open] summary::after {
  transform: rotate(-135deg);
  margin-top: -2px;
}

.accordion details p {
  padding: 0 8px 24px 30px;
  color: var(--muted);
}

/* ---------- 規約 ---------- */

.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 56px;
}

.summary {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 20px 20px 18px;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.summary::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 2px;
  background: var(--ok);
  box-shadow: 0 0 14px var(--ok);
}

.summary-ng::before {
  background: var(--ng);
  box-shadow: 0 0 14px var(--ng);
}

.summary strong {
  font-size: 1.05rem;
  font-weight: 900;
}

.summary span {
  color: var(--muted);
  font-size: .82rem;
}

@media (max-width: 720px) {
  .summary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.terms {
  display: grid;
  gap: 40px;
}

.term h2 {
  font-size: 1.15rem;
  font-weight: 900;
  padding-bottom: 12px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.term p {
  margin-bottom: 8px;
}

.term ol {
  margin: 0;
  padding-left: 1.5em;
  color: rgba(238, 240, 255, .88);
}

.term li {
  padding: 4px 0;
}

.term li::marker {
  font-family: var(--display);
  font-size: .85em;
  color: var(--violet);
}

.term strong {
  color: #fff;
}

/* ---------- お問い合わせ ---------- */

.contact-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 28px;
  padding: clamp(26px, 4vw, 44px);
  border-radius: 28px;
}

.contact-card h2 {
  font-size: 1.3rem;
  font-weight: 900;
  margin-bottom: 8px;
}

.contact-card p {
  color: var(--muted);
}

.check-list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding: 3px 0 3px 24px;
  font-size: .95rem;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--cyan);
  font-weight: 900;
}

/* ---------- 足元 ---------- */

.site-footer {
  position: relative;
  margin-top: 56px;
  padding: 64px 0 32px;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(5, 6, 15, 0), rgba(5, 6, 15, .8));
}

.site-footer::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -1px;
  height: 1px;
  background: var(--grad-line);
}

.site-footer::after {
  content: "";
  position: absolute;
  right: -2%;
  bottom: -34%;
  width: min(46%, 600px);
  aspect-ratio: 900 / 535;
  background: url("assets/logo.webp") center / contain no-repeat;
  opacity: .025;
  pointer-events: none;
}

.site-footer {
  overflow: hidden;
}

.footer-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 36px;
}

.footer-brand p {
  margin-top: 16px;
  color: var(--muted);
  font-size: .92rem;
  max-width: 24em;
}

.footer-col h2 {
  font-family: var(--display);
  font-size: .68rem;
  font-weight: 500;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: 14px;
}

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

.footer-col li {
  padding: 4px 0;
}

.footer-col a {
  text-decoration: none;
  font-size: .92rem;
  color: var(--muted);
}

.footer-col a:hover {
  color: var(--ink);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 48px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  color: var(--dim);
  font-family: var(--display);
  font-size: .72rem;
  letter-spacing: .06em;
}

.footer-images {
  position: relative;
  z-index: 1;
  margin-top: 10px;
  color: var(--dim);
  font-size: .68rem;
  opacity: .8;
}

.footer-credit {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.footer-credit svg {
  width: 12px;
  height: 12px;
  color: var(--violet);
}

@media (max-width: 720px) {
  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

/* ---------- 再生プレーヤー ---------- */

.player {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 60;
  width: 380px;
  border-radius: 22px;
  background: rgba(10, 11, 28, .86);
  border: 1px solid var(--line-strong);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  box-shadow: 0 30px 80px -20px rgba(0, 0, 0, .9), 0 0 60px -20px var(--glow);
  overflow: hidden;
  animation: player-in .4s cubic-bezier(.2, .8, .2, 1);
}

@keyframes player-in {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
}

.player-video {
  aspect-ratio: 16 / 9;
  min-height: 200px;
  background: #000;
}

.player-video iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
}

.player-info {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 10px 10px 12px;
}

.player-info img {
  width: 42px;
  height: 42px;
  object-fit: cover;
  border-radius: 50%;
  box-shadow: 0 0 16px -2px var(--glow);
  animation: spin 12s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.player-text {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  line-height: 1.4;
}

.player-text strong {
  font-family: var(--display), var(--font);
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.player-text span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .76rem;
  color: var(--muted);
}

.eq-mini {
  display: inline-flex;
  align-items: flex-end;
  gap: 2px;
  height: 10px;
}

.eq-mini b {
  width: 2px;
  height: 10px;
  background: var(--glow);
}

@media (max-width: 640px) {
  .player {
    left: 12px;
    right: 12px;
    bottom: 12px;
    width: auto;
  }

  body.has-player {
    padding-bottom: 300px;
  }
}

/* ---------- 知らせ ---------- */

.toast {
  position: fixed;
  left: 50%;
  bottom: 30px;
  z-index: 70;
  padding: 11px 22px;
  border-radius: 999px;
  background: #fff;
  color: #090a1c;
  font-weight: 700;
  font-size: .9rem;
  box-shadow: 0 10px 40px -10px rgba(162, 148, 255, .9);
  transform: translate(-50%, 20px);
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s, transform .25s;
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* ---------- 出てくる動き ---------- */

.js .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .9s ease, transform .9s cubic-bezier(.2, .8, .2, 1);
}

.js .reveal.in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }

  .js .reveal {
    opacity: 1;
    transform: none;
  }
}