:root {
  --washi: #f6efe1;
  --washi-2: #efe5d2;
  --sumi: #23201b;
  --sumi-soft: #4a443b;
  --kurenai: #9a2640;
  --kurenai-deep: #7a1d31;
  --kin: #b08a3e;
  --kin-light: #cda85a;
  --line: rgba(35, 32, 27, 0.14);
  --serif: "Shippori Mincho B1", serif;
  --sans: "Zen Kaku Gothic New", sans-serif;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-soft: cubic-bezier(0.4, 0, 0.1, 1);
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  font-size: 62.5%;
  overflow-y: scroll;
  scrollbar-gutter: stable;
}
body {
  font-family: var(--sans);
  color: var(--sumi);
  background: var(--washi);
  font-size: 1.86rem;
  line-height: 1.6;
  font-weight: 400;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
::selection {
  background: var(--kurenai);
  color: #fff;
}

/* ============ 和紙テクスチャ地 ============ */
.grain {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: radial-gradient(
    rgba(35, 32, 27, 0.025) 1px,
    transparent 1px
  );
  background-size: 4px 4px;
  opacity: 0.6;
}

/* ============ 舞う花びら・金箔キャンバス ============ */
#petals {
  position: fixed;
  inset: 0;
  z-index: 3;
  pointer-events: none;
}

/* ============ 縦の金糸（スクロール進捗） ============ */
.thread {
  position: fixed;
  top: 0;
  left: 38px;
  width: 1px;
  height: 100vh;
  z-index: 30;
  pointer-events: none;
  background: var(--line);
}
@media (max-width: 760px) {
  .thread {
    left: 16px;
  }
}
.thread__fill {
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 0;
  background: linear-gradient(180deg, var(--kin-light), var(--kurenai));
}
.thread__bead {
  position: absolute;
  left: -2.5px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--kurenai);
  box-shadow: 0 0 0 3px rgba(154, 38, 64, 0.18);
  transition: top 0.1s linear;
}

/* ============ ローダー ============ */
#loader {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: grid;
  place-items: center;
  overflow: hidden;
  pointer-events: none;
  animation: loaderHide 0.001s linear 3.2s forwards;
}
#loader::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(
    180deg,
    rgba(16, 12, 9, 0.98) 0%,
    rgba(24, 18, 13, 0.95) 58%,
    rgba(52, 38, 25, 0.68) 82%,
    rgba(246, 239, 225, 0.18) 100%
  );
  animation: loaderCurtain 1.5s var(--ease) 1.7s forwards;
}
#loader::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 22vh;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0),
    rgba(246, 239, 225, 0.26)
  );
  opacity: 0.75;
  animation: loaderFade 1.1s var(--ease) 1.7s forwards;
}
@keyframes loaderCurtain {
  to {
    transform: translateY(-100%);
    opacity: 0.55;
  }
}
@keyframes loaderFade {
  to {
    opacity: 0;
  }
}
@keyframes loaderHide {
  to {
    visibility: hidden;
  }
}

/* ============ ヘッダー ============ */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 40;
  padding: 22px clamp(20px, 5vw, 56px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  opacity: 0;
  animation: headerIn 0.7s var(--ease) 2.3s forwards;
  transition:
    padding 0.5s var(--ease),
    background 0.5s var(--ease),
    box-shadow 0.5s var(--ease);
}
@keyframes headerIn {
  to {
    opacity: 1;
  }
}
header.shrink {
  padding: 12px clamp(20px, 5vw, 56px);
  background: rgba(246, 239, 225, 0.86);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 var(--line);
}
.brand {
  display: flex;
  align-items: center;
  gap: 13px;
  text-decoration: none;
  color: inherit;
}
.brand__seal {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  flex: none;
  display: grid;
  place-items: center;
  background: var(--kurenai);
  transition:
    background 0.5s,
    transform 0.9s var(--ease);
}
@media (max-width: 480px) {
  .brand__seal {
    display: none;
  }
}
.brand:hover .brand__seal {
  transform: rotate(-12deg);
}
.brand__seal span {
  font-family: var(--serif);
  color: #f6efe1;
  font-size: 1.9rem;
  font-weight: 600;
  line-height: 1;
}
.brand__seal-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 50%;
}
.brand__txt {
  font-family: var(--serif);
  font-weight: 600;
  letter-spacing: 0.18em;
  font-size: 1.65rem;
  color: var(--sumi);
  white-space: nowrap;
}
.brand__txt small {
  display: block;
  font-size: 0.95rem;
  letter-spacing: 0.42em;
  color: var(--kin);
  font-weight: 500;
  margin-top: 2px;
}
header.on-hero .brand__txt,
header.on-hero .brand__txt small {
  color: #fff;
}
header.on-hero .brand__seal {
  background: rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(4px);
}
header.on-hero .brand__seal span {
  color: #fff;
}
nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.4vw, 34px);
}
nav a {
  text-decoration: none;
  color: inherit;
  font-size: 1.3rem;
  letter-spacing: 0.16em;
  font-weight: 500;
  position: relative;
  padding: 6px 0;
  font-family: var(--serif);
  transition: color 0.4s;
}
nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: var(--kurenai);
  transition: width 0.5s var(--ease);
}
nav a:hover::after {
  width: 100%;
}
header.on-hero nav a {
  color: rgba(255, 255, 255, 0.92);
}
header.on-hero nav a::after {
  background: #fff;
}
.nav-cta {
  padding: 9px 20px;
  margin-left: 12px;
  border: 1px solid var(--kurenai);
  border-radius: 2px;
  white-space: nowrap;
  color: var(--kurenai) !important;
  overflow: hidden;
}
.nav-cta::after {
  display: none;
}
.nav-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--kurenai);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s var(--ease);
  z-index: -1;
}
.nav-cta:hover {
  color: #fff !important;
}
.nav-cta:hover::before {
  transform: scaleX(1);
}
header.on-hero .nav-cta {
  border-color: rgba(255, 255, 255, 0.7);
  color: #fff !important;
}
header.on-hero .nav-cta::before {
  background: #fff;
}
header.on-hero .nav-cta:hover {
  color: var(--kurenai) !important;
}
.nav-mobile {
  display: none;
}
@media (max-width: 880px) {
  nav .nav-link {
    display: none;
  }
  .nav-mobile {
    display: block;
  }
}

/* ============ ヒーロー ============ */
.hero {
  position: relative;
  height: 100svh;
  min-height: 620px;
  overflow: hidden;
  z-index: auto;
}
.hero__bg {
  position: absolute;
  inset: -8% -4%;
  z-index: 0;
  transform: scale(1.12);
  will-change: transform;
}
.hero__bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url(assets/hannari.jpg) center 30% / cover no-repeat;
  transform: scale(-1, 1);
}
.hero__veil {
  position: absolute;
  inset: 0;
  z-index: 2;
  background:
    linear-gradient(
      180deg,
      rgba(28, 20, 12, 0.58) 0%,
      rgba(40, 28, 16, 0.3) 34%,
      rgba(70, 48, 28, 0.24) 66%,
      rgba(246, 239, 225, 0.55) 100%
    ),
    linear-gradient(
      90deg,
      rgba(26, 18, 10, 0.55) 0%,
      rgba(26, 18, 10, 0.18) 42%,
      transparent 68%
    ),
    radial-gradient(
      130% 90% at 72% 38%,
      transparent 32%,
      rgba(48, 32, 16, 0.34) 100%
    );
}
.hero__inner {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 clamp(28px, 8vw, 120px);
}
.hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 26px;
  opacity: 0;
  transform: translateY(14px);
}
.hero__eyebrow .ln {
  width: 46px;
  height: 1px;
  background: rgba(255, 255, 255, 0.7);
}
.hero__title {
  font-family: var(--serif);
  color: #fff;
  font-weight: 600;
  font-size: clamp(4.6rem, 9vw, 12rem);
  line-height: 1.04;
  letter-spacing: 0.04em;
  text-shadow: 0 2px 40px rgba(40, 25, 12, 0.5);
  margin-bottom: 28px;
}
.hero__title .title-line {
  display: block;
}
.hero__title .title-line--place {
  font-size: 0.5em;
  letter-spacing: 0.4em;
  margin-bottom: 0.6em;
}
.hero__title {
  .ch {
    display: inline-block;
    opacity: 0;
    transform: translateY(40px) rotate(4deg);
    filter: blur(6px);
    animation: chIn 1.1s var(--ease) forwards;
  }
  .title-line--place {
    .ch:nth-child(1) {
      animation-delay: 0.2s;
    }
    .ch:nth-child(2) {
      animation-delay: 0.33s;
    }
    .ch:nth-child(3) {
      animation-delay: 0.46s;
    }
  }
  .title-line:not(.title-line--place) {
    .ch:nth-child(1) {
      animation-delay: 0.59s;
    }
    .ch:nth-child(2) {
      animation-delay: 0.72s;
    }
    .ch:nth-child(3) {
      animation-delay: 0.85s;
    }
    .ch:nth-child(4) {
      animation-delay: 0.98s;
      margin-left: -0.2em;
      margin-right: -0.2em;
    }
    .ch:nth-child(5) {
      animation-delay: 1.11s;
    }
    .ch:nth-child(6) {
      animation-delay: 1.24s;
    }
    .ch:nth-child(7) {
      animation-delay: 1.37s;
    }
    .ch:nth-child(8) {
      animation-delay: 1.5s;
    }
    .ch:nth-child(9) {
      animation-delay: 1.63s;
    }
  }
  .title-line--grad {
    @media (max-width: 480px) {
      font-size: 0.82em;
    }
    .grad-main {
      display: inline;
      white-space: nowrap;
    }
    .ch:nth-child(1) { color: var(--kin-light); }
    .ch:nth-child(5) { color: var(--kurenai); }
    .ch:nth-child(7) { margin-right: 0.2em; }
    .ch--small {
      font-size: 0.6em;
      vertical-align: 0.1em;
    }
    .ch--small:nth-child(2) { animation-delay: 1.5s; }
    .ch--small:nth-child(3) { animation-delay: 1.63s; }
  }
}
@keyframes chIn {
  to {
    opacity: 1;
    transform: none;
    filter: blur(0);
  }
}
.hero__school-name {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 20px;
  opacity: 0;
  transform: translateY(14px);
}
.hero__school-name .sn-line {
  height: 1px;
  width: clamp(28px, 4vw, 56px);
  flex-shrink: 0;
  background: linear-gradient(90deg, transparent, rgba(176, 138, 62, 0.8));
}
.hero__school-name .sn-line:last-child {
  background: linear-gradient(90deg, rgba(176, 138, 62, 0.8), transparent);
}
.hero__school-name .sn-text {
  font-family: var(--serif);
  color: rgba(255, 255, 255, 0.88);
  font-size: clamp(1.4rem, 1.7vw, 1.9rem);
  letter-spacing: 0.42em;
  font-weight: 400;
  white-space: nowrap;
  padding-left: 0.42em;
  border-top: 1px solid rgba(176, 138, 62, 0.35);
  border-bottom: 1px solid rgba(176, 138, 62, 0.35);
  padding: 0.45em 0.2em;
}
.hero__sub {
  color: rgba(255, 255, 255, 0.94);
  font-size: clamp(1.5rem, 1.9vw, 2rem);
  letter-spacing: 0.12em;
  line-height: 2.1;
  opacity: 0;
  transform: translateY(16px);
}
.hero__sub b {
  font-weight: 500;
  color: #fff;
  font-family: var(--serif);
}
.hero__scroll {
  position: absolute;
  bottom: 34px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 4;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  opacity: 0;
}
.hero__scroll span {
  color: #fff;
  font-size: 1rem;
  letter-spacing: 0.4em;
  writing-mode: vertical-rl;
  font-family: var(--serif);
}
.hero__scroll i {
  width: 1px;
  height: 46px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.85), transparent);
  position: relative;
  overflow: hidden;
}
.hero__scroll i::after {
  content: "";
  position: absolute;
  top: -50%;
  left: 0;
  width: 1px;
  height: 50%;
  background: #fff;
  animation: drip 1.9s var(--ease-soft) infinite;
}
@keyframes drip {
  0% {
    top: -50%;
  }
  60%,
  100% {
    top: 100%;
  }
}
@keyframes rise {
  to {
    opacity: 1;
    transform: none;
  }
}
@keyframes float-bg {
  0%,
  100% {
    transform: scale(1.12) translateY(0);
  }
  50% {
    transform: scale(1.14) translateY(-1.2%);
  }
}
.hero__bg {
  animation: float-bg 18s ease-in-out 1.7s infinite;
}
.hero__school-name {
  animation: rise 1s var(--ease) 1.88s forwards;
}
.hero__eyebrow {
  animation: rise 1s var(--ease) 1.9s forwards;
}
.hero__sub {
  animation: rise 1.1s var(--ease) 2.2s forwards;
}
.hero__seal {
  animation: rise 1.2s var(--ease) 2.6s forwards;
}
.hero__scroll {
  animation: rise 1s var(--ease) 2.9s forwards;
}

/* 縦書き落款（ヒーロー右） */
.hero__seal {
  position: absolute;
  right: clamp(20px, 5vw, 60px);
  top: calc(50% - 8em);
  transform: translateY(-50%);
  z-index: 4;
  writing-mode: vertical-rl;
  font-family: var(--serif);
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.3rem;
  letter-spacing: 0.3em;
  line-height: 2.4;
  opacity: 0;
}
.hero__seal .stamp {
  display: block;
  margin-top: 8em;
  width: 34px;
  height: auto;
  background: var(--kurenai);
  background: #111;
  border-radius: 3px;
  writing-mode: horizontal-tb;
  color: #fff;
  font-size: 1.1rem;
  display: grid;
  place-items: center;
  text-align: center;
  line-height: 1.2;
  padding: 1em;
}
@media (max-width: 680px) {
  .hero__seal {
    display: none;
  }
}

/* ============ セクション共通 ============ */
section {
  position: relative;
  z-index: 2;
}
.wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 clamp(24px, 6vw, 72px);
}
.band {
  padding: clamp(80px, 12vw, 160px) 0;
}
.eyebrow {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
}
.eyebrow .num {
  font-family: var(--serif);
  color: var(--kin);
  font-size: 1.3rem;
  letter-spacing: 0.2em;
  font-weight: 600;
  display: none;
}
.eyebrow .ln {
  width: 40px;
  height: 1px;
  background: var(--kin);
  opacity: 0.6;
  display: none;
}
.eyebrow .lbl {
  font-family: var(--serif);
  letter-spacing: 0.4em;
  font-weight: 600;
  background: var(--kurenai);
  color: #eee;
  padding: 0.2em 1em;
}
.h-sec {
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0.04em;
  font-size: clamp(2.8rem, 4.4vw, 4.6rem);
  margin-bottom: 40px;
}
.h-sec .accent {
  color: var(--kurenai);
}
.lead {
  font-size: clamp(1.74rem, 1.74vw, 2rem);
  line-height: 2.3;
  color: var(--sumi-soft);
  font-weight: 400;
  letter-spacing: 0.04em;
}

/* reveal */
.reveal {
  opacity: 0;
  transform: translateY(38px);
  transition:
    opacity 1.1s var(--ease),
    transform 1.1s var(--ease);
}
.reveal.show {
  opacity: 1;
  transform: none;
}
.reveal.d1 {
  transition-delay: 0.12s;
}
.reveal.d2 {
  transition-delay: 0.24s;
}
.reveal.d3 {
  transition-delay: 0.36s;
}
.reveal.d4 {
  transition-delay: 0.48s;
}
/* 障子めくり */
.shoji {
  position: relative;
  overflow: hidden;
}
.shoji img {
  display: block;
  width: 100%;
  transform: scale(1.14);
  transition: transform 1.6s var(--ease);
}
.shoji.show img {
  transform: scale(1);
}
.shoji::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--washi);
  transform-origin: right;
  transition: transform 1.3s var(--ease);
}
.shoji.show::after {
  transform: scaleX(0);
}

/* ============ ごあいさつ ============ */
.greet {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(36px, 6vw, 90px);
  align-items: center;
  margin-bottom: 64px;
}
@media (max-width: 860px) {
  .greet {
    grid-template-columns: 1fr;
  }
}
.greet__media {
  position: relative;
}
.greet__media .frame {
  position: relative;
  border-radius: 3px;
  overflow: hidden;
  box-shadow: 0 30px 70px -30px rgba(60, 40, 20, 0.45);
}
.greet__media .frame img {
  width: 100%;
  display: block;
}
.greet__media .tag {
  position: absolute;
  bottom: -22px;
  left: -22px;
  background: var(--sumi);
  color: var(--washi);
  font-family: var(--serif);
  writing-mode: vertical-rl;
  padding: 18px 12px;
  letter-spacing: 0.3em;
  font-size: 1.4rem;
  box-shadow: 0 16px 40px -16px rgba(0, 0, 0, 0.5);
}
.greet__media .tag b {
  color: var(--kin-light);
  font-size: 2.6rem;
  font-weight: 700;
}
.greet__body p {
  margin-top: 1.4em;
}
.greet__body p:first-of-type {
  margin-top: 0;
}
.sign {
  margin-top: 32px;
  display: flex;
  align-items: baseline;
  gap: 14px;
  font-family: var(--serif);
}
.sign small {
  font-size: 1.1rem;
  letter-spacing: 0.3em;
  color: var(--kin);
}
.sign b {
  font-size: 2rem;
  letter-spacing: 0.18em;
  font-weight: 600;
}

/* ============ 数字（10年） ============ */
.mark-row {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(20px, 4vw, 64px);
  padding-top: 48px;
  border-top: 1px solid var(--line);
}
.mark {
  flex: 1;
  min-width: 140px;
}
.mark .v {
  font-family: var(--serif);
  font-weight: 700;
  color: var(--kurenai);
  line-height: 1;
  font-size: clamp(4rem, 6vw, 6.2rem);
  letter-spacing: 0.02em;
  margin-bottom: 10px;
}
.mark .v small {
  font-size: 0.4em;
  color: var(--sumi);
  margin-left: 4px;
  letter-spacing: 0.1em;
}
.mark .k {
  font-size: 1.25rem;
  letter-spacing: 0.22em;
  color: var(--sumi-soft);
  font-family: var(--serif);
}

/* ============ 新舞踊とは（扇） ============ */
.about {
  background: url(assets/background_2.jpg) center/cover;
  position: relative;
  padding-bottom: clamp(40px, 6vw, 80px);
}
.about::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(246, 239, 225, 0.62);
}
.about .wrap {
  position: relative;
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 7vw, 100px);
  align-items: center;
}
@media (max-width: 860px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
}
.fan-stage {
  position: relative;
  height: clamp(380px, 48vw, 540px);
}
.about-copy .point {
  display: flex;
  gap: 18px;
  margin-top: 30px;
  align-items: flex-start;
}
.about-copy .point .no {
  font-family: var(--serif);
  color: var(--kin);
  font-size: 1.3rem;
  font-weight: 600;
  border: 1px solid var(--kin);
  border-radius: 50%;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  flex: none;
  margin-top: 3px;
}
.about-copy .point h4 {
  font-family: var(--serif);
  font-size: 1.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 5px;
}
.about-copy .point p {
  font-size: 1.8rem;
  color: var(--sumi-soft);
  line-height: 1.95;
}

.fan-stage img {
  position: absolute;
  transform-origin: 50% 88%;
  will-change: transform;
}
.fan-stage img:nth-child(1) {
  top: -60%;
  width: min(50vw, 400px);
  left: calc(100% - 18vw);
  animation: fan-sway-1 6s ease-in-out infinite backwards;
}
.fan-stage img:nth-child(2) {
  top: -0%;
  width: min(50vw, 400px);
  left: calc(100% - 20vw);
  animation: fan-sway-2 6s ease-in-out infinite 1.5s backwards;
}
.fan-stage img:nth-child(3) {
  top: 60%;
  width: min(50vw, 400px);
  left: calc(100% - 18vw);
  animation: fan-sway-3 6s ease-in-out infinite 3s backwards;
}
@keyframes fan-sway-1 {
  0%,
  100% {
    transform: translateX(-50%) rotate(-28deg) translateY(0);
  }
  40% {
    transform: translateX(-50%) rotate(-18deg) translateY(-14px);
  }
  70% {
    transform: translateX(-50%) rotate(-33deg) translateY(-5px);
  }
}
@keyframes fan-sway-2 {
  0%,
  100% {
    transform: translateX(-50%) rotate(-6deg) translateY(0);
  }
  40% {
    transform: translateX(-50%) rotate(2deg) translateY(-14px);
  }
  70% {
    transform: translateX(-50%) rotate(-11deg) translateY(-5px);
  }
}
@keyframes fan-sway-3 {
  0%,
  100% {
    transform: translateX(-50%) rotate(28deg) translateY(0);
  }
  40% {
    transform: translateX(-50%) rotate(36deg) translateY(-14px);
  }
  70% {
    transform: translateX(-50%) rotate(22deg) translateY(-5px);
  }
}
@media (max-width: 860px) {
  .fan-stage {
    display: none;
  }
}

/* ============ 稽古の様子（ギャラリー） ============ */
.gallery {
  background: var(--sumi);
  color: var(--washi);
  overflow: hidden;
}
.gallery .h-sec {
  color: var(--washi);
}
.gallery .h-sec .accent {
  color: var(--kin-light);
}
.gallery .lead {
  color: rgba(246, 239, 225, 0.7);
  max-width: 46ch;
}
.gallery .wrap {
  margin-bottom: 56px;
}
.g-marquee {
  overflow: hidden;
  padding: 4px 0;
  mask-image: linear-gradient(
    90deg,
    transparent 0%,
    #000 8%,
    #000 92%,
    transparent 100%
  );
  -webkit-mask-image: linear-gradient(
    90deg,
    transparent 0%,
    #000 8%,
    #000 92%,
    transparent 100%
  );
}
.g-track {
  display: flex;
  width: max-content;
  animation: marquee 50s linear infinite;
}
.g-track:hover {
  animation-play-state: paused;
}
@keyframes marquee {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}
.g-item {
  flex: none;
  width: clamp(220px, 24vw, 320px);
  aspect-ratio: 4/3;
  margin-right: clamp(8px, 1.4vw, 14px);
  position: relative;
  overflow: hidden;
  border-radius: 2px;
}
.g-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: grayscale(0.5) contrast(1.15) brightness(0.9);
  transition:
    filter 1.2s var(--ease),
    transform 1.4s var(--ease);
}
.g-item:hover img {
  filter: grayscale(0) contrast(1) brightness(1);
  transform: scale(1.06);
}
.g-item::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(20, 16, 12, 0.65));
  opacity: 0;
  transition: opacity 0.6s;
}
.g-item:hover::after {
  opacity: 1;
}
.g-item .cap {
  position: absolute;
  left: 16px;
  bottom: 14px;
  font-family: var(--serif);
  font-size: 1.3rem;
  letter-spacing: 0.2em;
  color: #fff;
  opacity: 0;
  transform: translateY(8px);
  transition: 0.6s var(--ease);
  z-index: 2;
}
.g-item:hover .cap {
  opacity: 1;
  transform: none;
}

/* ============ 先生紹介 ============ */
.teacher {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(40px, 6vw, 86px);
  align-items: center;
}
@media (max-width: 860px) {
  .teacher {
    grid-template-columns: 1fr;
  }
}
.teacher__media {
  position: relative;
}
.teacher__media .frame {
  position: relative;
  overflow: hidden;
  border-radius: 3px;
  box-shadow: 0 36px 80px -36px rgba(60, 40, 20, 0.5);
}
.teacher__media .frame img {
  width: 100%;
  display: block;
}
.teacher__media .ring {
  position: absolute;
  inset: -26px;
  border: 1px solid var(--kin);
  border-radius: 4px;
  z-index: -1;
  opacity: 0.5;
}
.quote {
  font-family: var(--serif);
  font-size: clamp(2rem, 2.6vw, 3rem);
  line-height: 1.85;
  font-weight: 500;
  letter-spacing: 0.04em;
  margin-bottom: 24px;
}
.quote .accent {
  color: var(--kurenai);
}

/* ============ 稽古案内 ============ */
.info {
  background: url(assets/background_1.jpg) center/cover;
  position: relative;
}
.info::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(246, 239, 225, 0.5);
}
.info .wrap {
  position: relative;
}
.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(30px, 5vw, 64px);
}
@media (max-width: 760px) {
  .info-grid {
    grid-template-columns: 1fr;
  }
}
.dl {
  border-top: 1px solid var(--line);
}
.dl .row {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 18px;
  padding: 20px 4px;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
}
.dl dt {
  font-family: var(--serif);
  font-size: 1.56rem;
  letter-spacing: 0.18em;
  color: var(--kurenai);
  font-weight: 600;
}
.dl dd {
  font-size: 1.68rem;
  line-height: 1.9;
  color: var(--sumi);
}
.dl dd small {
  color: var(--sumi-soft);
  font-size: 1.45rem;
}
.access-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: clamp(24px, 3vw, 38px);
  box-shadow: 0 24px 60px -36px rgba(60, 40, 20, 0.4);
}
.access-card h4 {
  font-family: var(--serif);
  font-size: 1.7rem;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
  font-weight: 600;
}
.access-card .map {
  aspect-ratio: 16/10;
  background:
    repeating-linear-gradient(
      45deg,
      rgba(176, 138, 62, 0.07) 0 12px,
      transparent 12px 24px
    ),
    var(--washi-2);
  border-radius: 2px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  position: relative;
  overflow: hidden;
}
.access-card .map .pin {
  width: 14px;
  height: 14px;
  border-radius: 50% 50% 50% 0;
  background: var(--kurenai);
  transform: rotate(-45deg);
  position: relative;
}
.access-card .map .pin::after {
  content: "";
  position: absolute;
  inset: 4px;
  background: #fff;
  border-radius: 50%;
}
.access-card .map .ripple {
  position: absolute;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1px solid var(--kurenai);
  animation: rip 2.4s ease-out infinite;
}
@keyframes rip {
  0% {
    transform: scale(1);
    opacity: 0.7;
  }
  100% {
    transform: scale(7);
    opacity: 0;
  }
}
.access-card p {
  font-size: 1.35rem;
  color: var(--sumi-soft);
  line-height: 1.95;
}
.map-link {
  display: inline-block;
  margin-top: 20px;
  font-family: var(--serif);
  font-size: 1.45rem;
  color: var(--kurenai);
  text-decoration: none;
  letter-spacing: 0.1em;
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
  transition: opacity 0.2s;
}
.map-link:hover {
  opacity: 0.65;
}

/* ============ FAQ ============ */
.faq {
  max-width: 820px;
  margin: 0 auto;
}
#faq .eyebrow {
  justify-content: center;
}
#faq .h-sec {
  text-align: center;
}
.acc {
  border-bottom: 1px solid var(--line);
}
.acc__q {
  width: 100%;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: var(--serif);
  font-size: clamp(1.5rem, 1.8vw, 1.8rem);
  font-weight: 600;
  color: var(--sumi);
  padding: 24px 44px 24px 32px;
  position: relative;
  letter-spacing: 0.04em;
  line-height: 1.6;
}
.acc__q::before {
  content: "問";
  position: absolute;
  left: 0;
  top: 24px;
  color: var(--kin);
  font-size: 1.3rem;
  font-family: var(--serif);
}
.acc__q .pm {
  position: absolute;
  right: 6px;
  top: 50%;
  width: 14px;
  height: 14px;
  transform: translateY(-50%);
}
.acc__q .pm::before,
.acc__q .pm::after {
  content: "";
  position: absolute;
  background: var(--kurenai);
  transition: transform 0.5s var(--ease);
}
.acc__q .pm::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 1.5px;
}
.acc__q .pm::after {
  left: 6px;
  top: 0;
  width: 1.5px;
  height: 14px;
}
.acc.open .pm::after {
  transform: scaleY(0);
}
.acc__a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.6s var(--ease);
}
.acc__a .inner {
  padding: 0 32px 26px 32px;
  color: var(--sumi-soft);
  font-size: clamp(1.68rem, 1.68vw, 1.95rem);
  line-height: 2.1;
}

/* ============ お問い合わせ ============ */
.cta {
  background: var(--kurenai-deep);
  color: var(--washi);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url(assets/parasol.jpg) center/cover;
  opacity: 0.16;
  mix-blend-mode: luminosity;
}
.cta .wrap {
  position: relative;
}
.cta .lbl {
  display: block;
  font-family: var(--serif);
  letter-spacing: 0.5em;
  color: var(--kin-light);
  margin-bottom: 20px;
}
.cta h2 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(3rem, 5vw, 5.6rem);
  line-height: 1.35;
  margin-bottom: 16px;
  letter-spacing: 0.04em;
}
.cta p {
  color: rgba(246, 239, 225, 0.82);
  font-size: clamp(1.74rem, 1.74vw, 2rem);
  line-height: 2.1;
  max-width: 34ch;
  margin: 0 auto 40px;
}
.btn-row {
  display: flex;
  gap: 18px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 16px 38px;
  border-radius: 2px;
  font-family: var(--serif);
  font-size: 1.5rem;
  letter-spacing: 0.14em;
  text-decoration: none;
  position: relative;
  overflow: hidden;
  transition:
    color 0.5s var(--ease),
    transform 0.4s;
}
.btn .a-txt {
  position: relative;
  z-index: 2;
}
.btn-fill {
  background: var(--washi);
  color: var(--kurenai-deep);
}
.btn-fill::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--kin-light);
  transform: translateY(101%);
  transition: transform 0.5s var(--ease);
  z-index: 1;
}
.btn-fill:hover {
  color: var(--sumi);
}
.btn-fill:hover::before {
  transform: translateY(0);
}
.btn-line {
  border: 1px solid rgba(246, 239, 225, 0.55);
  color: var(--washi);
}
.btn-line::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--washi);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s var(--ease);
  z-index: 1;
}
.btn-line:hover {
  color: var(--kurenai-deep);
}
.btn-line:hover::before {
  transform: scaleX(1);
}

/* ============ フッター ============ */
footer {
  background: var(--sumi);
  color: rgba(246, 239, 225, 0.66);
  padding: 64px 0 40px;
}
.f-top {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
  align-items: flex-start;
  margin-bottom: 48px;
}
.f-brand {
  font-family: var(--serif);
  color: var(--washi);
  font-size: 2.2rem;
  letter-spacing: 0.16em;
  font-weight: 600;
}
.f-brand small {
  display: block;
  font-size: 1rem;
  letter-spacing: 0.4em;
  color: var(--kin);
  margin-top: 8px;
  font-weight: 500;
}
.f-nav {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}
.f-nav a {
  color: rgba(246, 239, 225, 0.66);
  text-decoration: none;
  font-size: 1.3rem;
  letter-spacing: 0.1em;
  font-family: var(--serif);
  transition: color 0.4s;
}
.f-nav a:hover {
  color: var(--kin-light);
}
.f-bot {
  padding-top: 24px;
  border-top: 1px solid rgba(246, 239, 225, 0.12);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 1.1rem;
  letter-spacing: 0.1em;
}

/* ============ 波の区切り（青海波） ============ */
.wave-div {
  height: 46px;
  width: 100%;
  position: relative;
  z-index: 2;
  background: radial-gradient(
      circle at 10px 18px,
      transparent 11px,
      var(--kin) 11px,
      var(--kin) 12px,
      transparent 12px
    )
    0 0/24px 24px repeat-x;
  opacity: 0.16;
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001s !important;
    transition-duration: 0.001s !important;
  }
}