/* 日本フィジェットスライダー協会
   版面の考え方: 公文書の版面(発番号・日付・縦書き見出し・罫線)に、計器の目盛りと
   実物のスライダーを置く。色は紙の白と紺、罫線は銀、金は紋章だけ、桃色は操作の印だけ。 */

:root {
  --paper: #f4f6f9;
  --paper-2: #e9edf3;
  --ink: #0f1a33;
  --ink-2: #4b556b;
  --rule: #cdd3dd;
  --silver: #98a1b1;
  --navy: #14254a;
  --navy-2: #1c3161;
  --on-navy: #edf0f6;
  --on-navy-2: #a9b4cb;
  --pink: #c22f7c;
  --glass: rgba(244, 246, 249, 0.74);
  --shadow: rgba(15, 26, 51, 0.22);

  --f-display: "Shippori Mincho B1", "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", serif;
  --f-body: "BIZ UDPGothic", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", sans-serif;
  --f-num: "BIZ UDGothic", "Hiragino Sans", "Yu Gothic", monospace;

  --s-1: 0.8125rem;
  --s0: 1rem;
  --s1: 1.25rem;
  --s2: 1.5625rem;
  --s3: 1.953rem;
  --s4: 2.441rem;
  --s5: 3.052rem;

  --gutter-x: clamp(16px, 5vw, 48px);
  --measure: 36em;
  --ease-out: cubic-bezier(0.2, 0.7, 0.1, 1);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0a1224;
    --paper-2: #101a31;
    --ink: #e5e9f1;
    --ink-2: #a3acbf;
    --rule: #26324d;
    --silver: #77839a;
    --navy: #050b19;
    --navy-2: #0e1a35;
    --on-navy: #e5e9f1;
    --on-navy-2: #9aa6bf;
    --pink: #e45ea4;
    --glass: rgba(10, 18, 36, 0.72);
    --shadow: rgba(0, 0, 0, 0.5);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0a1224;
  --paper-2: #101a31;
  --ink: #e5e9f1;
  --ink-2: #a3acbf;
  --rule: #26324d;
  --silver: #77839a;
  --navy: #050b19;
  --navy-2: #0e1a35;
  --on-navy: #e5e9f1;
  --on-navy-2: #9aa6bf;
  --pink: #e45ea4;
  --glass: rgba(10, 18, 36, 0.72);
  --shadow: rgba(0, 0, 0, 0.5);
  color-scheme: dark;
}

@view-transition { navigation: auto; }
::view-transition-old(root),
::view-transition-new(root) { animation-duration: 260ms; }

*, *::before, *::after { box-sizing: border-box; }
/* 「隠す」指定は、どの並べ方の指定よりも優先する */
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 5rem; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: var(--s0);
  line-height: 1.9;
  font-feature-settings: "palt" 0;
  line-break: strict;
  overflow-wrap: anywhere;
}
body::before {
  content: "";
  position: fixed;
  inset: 0 0 auto;
  height: env(safe-area-inset-top, 0px);
  z-index: 30;
  background: var(--paper);
}
img, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 0.3em; }
a:hover { text-decoration-color: var(--pink); }
:focus-visible { outline: 2px solid var(--pink); outline-offset: 3px; border-radius: 2px; }
h1, h2, h3 { font-family: var(--f-display); font-weight: 700; line-height: 1.45; margin: 0; text-wrap: balance; letter-spacing: 0.03em; font-feature-settings: "palt" 1; }
/* 文節のまとまり:この中では改行しない */
.w { display: inline-block; }
.catch, .org, .sub, .decree blockquote p, .sign, .menu a, .fee, .portrait figcaption, .brand-name b { font-feature-settings: "palt" 1; }
p { margin: 0; text-wrap: pretty; }
.num { font-family: var(--f-num); font-variant-numeric: tabular-nums; }
.vh { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

.wrap {
  width: 100%;
  max-width: 72rem;
  margin-inline: auto;
  padding-left: max(var(--gutter-x), env(safe-area-inset-left, 0px));
  padding-right: max(var(--gutter-x), env(safe-area-inset-right, 0px));
}

/* ヘッダー(すりガラス) */
.site-head {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 20;
  background: var(--glass);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid var(--rule);
}
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-block: 0.6rem; }
.brand { display: flex; align-items: center; gap: 0.75rem; text-decoration: none; min-width: 0; }
.brand-seal { width: 44px; height: 44px; flex: none; view-transition-name: seal; }
.brand-name { display: grid; line-height: 1.3; min-width: 0; }
.brand-name b { font-family: var(--f-display); font-weight: 700; font-size: clamp(0.95rem, 3.8vw, 1.1rem); letter-spacing: 0.02em; white-space: nowrap; }
.brand-name small { font-family: var(--f-display); font-size: 0.72rem; color: var(--ink-2); letter-spacing: 0.01em; white-space: nowrap; }

.nav-desk { display: none; }
.nav-desk ul { display: flex; gap: 1.6rem; list-style: none; margin: 0; padding: 0; }
.nav-desk a { text-decoration: none; font-size: 0.94rem; letter-spacing: 0.08em; padding-block: 0.4rem; border-bottom: 2px solid transparent; }
.nav-desk a:hover { border-bottom-color: var(--rule); }
.nav-desk a[aria-current="page"] { border-bottom-color: var(--pink); }

.menu-btn {
  flex: none;
  display: grid; place-content: center; gap: 7px;
  width: 48px; height: 48px;
  border: 1px solid var(--rule); border-radius: 50%;
  background: transparent; color: var(--ink); cursor: pointer;
}
.menu-btn span { display: block; width: 18px; height: 1.5px; background: currentColor; }
.menu-btn span:last-child { width: 12px; justify-self: end; }

@media (min-width: 980px) {
  .nav-desk { display: block; }
  .menu-btn { display: none; }
}

/* 全画面メニュー(Popover) */
.menu {
  position: fixed; inset: 0;
  width: 100%; height: 100%; max-width: none; max-height: none;
  margin: 0; border: 0;
  padding: calc(env(safe-area-inset-top, 0px) + 1rem) max(var(--gutter-x), env(safe-area-inset-right, 0px)) calc(env(safe-area-inset-bottom, 0px) + 1.5rem) max(var(--gutter-x), env(safe-area-inset-left, 0px));
  background: var(--navy);
  color: var(--on-navy);
  overflow-y: auto;
  opacity: 0;
  transform: translateY(-2%);
  transition: opacity 280ms var(--ease-out), transform 380ms var(--ease-out), overlay 380ms allow-discrete, display 380ms allow-discrete;
}
.menu:popover-open { display: grid; grid-template-rows: auto 1fr auto; opacity: 1; transform: none; }
@starting-style { .menu:popover-open { opacity: 0; transform: translateY(-4%); } }
.menu::backdrop { background: transparent; }
.menu-top { display: flex; justify-content: space-between; align-items: center; }
.menu-top img { width: 64px; height: 64px; }
.menu-close {
  width: 56px; height: 56px; border-radius: 50%;
  border: 1px solid color-mix(in srgb, var(--on-navy) 35%, transparent);
  background: transparent; color: var(--on-navy); cursor: pointer; position: relative;
}
.menu-close::before, .menu-close::after { content: ""; position: absolute; left: 50%; top: 50%; width: 20px; height: 1.5px; background: currentColor; }
.menu-close::before { transform: translate(-50%, -50%) rotate(45deg); }
.menu-close::after { transform: translate(-50%, -50%) rotate(-45deg); }
.menu nav { align-self: start; padding-block: 1.5rem 2rem; }
.menu ul { list-style: none; margin: 0; padding: 0; display: grid; }
.menu-list > li { padding-block: 1rem; }
.menu-list > li + li { border-top: 1px solid color-mix(in srgb, var(--on-navy) 16%, transparent); }
.menu-list > li > a { display: block; font-family: var(--f-display); font-size: var(--s2); letter-spacing: 0.06em; text-decoration: none; line-height: 1.5; }
.menu-list > li > a[aria-current="page"] { box-shadow: inset 3px 0 0 var(--pink); padding-left: 0.9rem; }
.menu .menu-sub { display: flex; flex-wrap: wrap; gap: 0.15rem 1.25rem; margin-top: 0.5rem; }
.menu .menu-sub a { display: inline-block; padding-block: 0.3rem; font-size: 0.9rem; color: var(--on-navy-2); text-decoration: none; letter-spacing: 0.04em; }
.menu .menu-sub a:hover { color: var(--on-navy); text-decoration: underline; text-decoration-color: var(--pink); }
.menu-cta { display: flex; margin-top: 1.25rem; justify-content: center; min-height: 52px; align-items: center; border-radius: 4px; background: var(--on-navy); color: var(--navy); font-size: 1rem; letter-spacing: 0.1em; text-decoration: none; }
.menu-cta:hover { box-shadow: inset 0 -2px 0 var(--pink); }
.menu-foot { font-size: var(--s-1); color: var(--on-navy-2); }
@media (min-width: 600px) { .menu nav { width: min(36rem, 100%); justify-self: center; } }

/* 文書の頭(発番号・日付) */
.doc-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: end; gap: 1rem 2rem; padding-block: 2.5rem 1.75rem; border-bottom: 1px solid var(--ink); }
.doc-head h1 { font-size: clamp(var(--s3), 6vw, var(--s5)); letter-spacing: 0.06em; }
.docno { font-family: var(--f-num); font-size: var(--s-1); color: var(--ink-2); line-height: 1.7; text-align: right; }

/* 節(広い画面では縦書きの見出し) */
.sec { display: grid; gap: 1.25rem; padding-block: 3.25rem; border-bottom: 1px solid var(--rule); }
.sec:last-child { border-bottom: 0; }
.sec > h2 { font-size: var(--s2); }
.sec-body { min-width: 0; display: grid; gap: 1.5rem; }
@media (min-width: 860px) {
  .sec { grid-template-columns: 4.5rem minmax(0, 1fr); gap: 3rem; padding-block: 4.5rem; }
  .sec > h2 {
    writing-mode: vertical-rl;
    text-wrap: wrap;
    font-size: var(--s2);
    letter-spacing: 0.3em;
    justify-self: start;
    padding-left: 1.4rem;
    border-left: 1px solid var(--silver);
    align-self: start;
    position: sticky;
    top: 6.5rem;
  }
}
.prose { max-width: var(--measure); display: grid; gap: 1.2em; }
.prose p { font-size: 1.0625rem; }
.sign { justify-self: end; text-align: right; font-family: var(--f-display); line-height: 1.8; margin-top: 0.5rem; }
.sign b { font-size: var(--s1); letter-spacing: 0.06em; word-spacing: 0.35em; font-weight: 700; }
/* 手書きの署名 */
.sign .autograph { display: inline-block; height: 4.5rem; width: auto; max-width: 70vw; vertical-align: middle; margin: 0.25rem 0 0 0.6rem; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .sign .autograph { filter: invert(1); } }
:root[data-theme="dark"] .sign .autograph { filter: invert(1); }
.nobr { white-space: nowrap; }
.officer[id] { scroll-margin-top: 1.5rem; }

/* トップ:題字と計器 */
.hero { display: grid; gap: 2rem; padding-block: 2rem 3rem; }
.hero-copy { display: grid; gap: 0.75rem; align-content: start; }
.catch { font-size: clamp(2.1rem, 9.5vw, 4.2rem); letter-spacing: 0.02em; line-height: 1.35; font-weight: 800; }
.org { font-family: var(--f-display); font-size: var(--s1); letter-spacing: 0.05em; font-weight: 700; margin-top: 0.5rem; }
.sub { font-family: var(--f-display); color: var(--ink-2); letter-spacing: 0.04em; }
.hero .docno { text-align: left; }
.dn-v { display: none; }
@media (min-width: 960px) {
  .hero { grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 4rem; padding-block: 3.5rem 4.5rem; }
  .hero-copy {
    order: 2;
    writing-mode: vertical-rl;
    display: flex;
    flex-direction: column;
    height: 31rem;
    gap: 1.1rem;
  }
  .hero-copy * { text-wrap: wrap; }
  .catch { font-size: 3.3rem; letter-spacing: 0.08em; line-height: 1.6; font-weight: 700; }
  .org { margin: 0; font-size: var(--s1); }
  .dn-h { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
  .dn-v { display: inline; }
  .hero .docno { font-family: var(--f-display); letter-spacing: 0.12em; margin-right: 0.75rem; padding-right: 1.25rem; border-right: 1px solid var(--rule); text-align: left; }
}

/* 計器(触れるスライダー) */
.instrument { margin: 0; display: grid; gap: 1rem; min-width: 0; }
.gauge {
  --plate-w: 53.33%;
  position: relative;
  aspect-ratio: 2.98 / 1;
  max-width: 100%;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}
.gauge::before {
  /* 板の通り道 */
  content: "";
  position: absolute; inset: 4% 0;
  border: 1px dashed var(--silver);
  border-radius: 14px;
  opacity: 0.7;
}
.plate { position: absolute; top: 0; left: 0; width: var(--plate-w); height: 100%; }
.plate img { width: 100%; height: 100%; object-fit: fill; pointer-events: none; }
.plate-base { top: 3%; height: 94%; left: calc(var(--plate-w) * 0.02); width: calc(var(--plate-w) * 0.96); }
.plate-base img { filter: drop-shadow(0 3px 6px var(--shadow)); }
.plate-top {
  cursor: grab;
  touch-action: pan-y;
  transform: translateX(calc(var(--p, 0.4375) * 100%));
  will-change: transform;
}
.plate-top.is-settling { transition: transform 260ms cubic-bezier(0.3, 1.4, 0.5, 1); }
.plate-top:active { cursor: grabbing; }
.plate-top img { filter: drop-shadow(0 10px 14px var(--shadow)); }
.plate-top:focus-visible { outline-offset: 6px; border-radius: 12px; }

.scale {
  position: relative; height: 2.6rem;
  margin-top: -0.25rem;
  background:
    repeating-linear-gradient(90deg, var(--silver) 0 1px, transparent 1px calc(100% / 40)) top / 100% 7px no-repeat,
    repeating-linear-gradient(90deg, var(--ink-2) 0 1px, transparent 1px calc(100% / 8)) top / 100% 12px no-repeat;
  border-top: 1px solid var(--ink-2);
}
.scale span {
  position: absolute; top: 14px;
  font-family: var(--f-num); font-size: 0.75rem; color: var(--ink-2); white-space: nowrap;
}
.scale span.on { color: var(--pink); }
.readout-row { display: flex; flex-wrap: wrap; align-items: end; gap: 0.75rem 2rem; }
.readout { display: flex; flex-wrap: wrap; align-items: end; gap: 0.5rem 2rem; margin: 0; }
.readout div { display: grid; gap: 0.1rem; }
.readout dt { font-size: 0.75rem; color: var(--ink-2); letter-spacing: 0.1em; }
.readout dd { margin: 0; font-family: var(--f-num); font-variant-numeric: tabular-nums; font-size: var(--s1); line-height: 1.3; }
.sound-btn {
  margin-left: auto;
  font: inherit; font-size: 0.85rem;
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--rule); border-radius: 999px;
  background: transparent; color: var(--ink); cursor: pointer;
}
.sound-btn[aria-pressed="false"] { color: var(--ink-2); text-decoration: line-through; text-decoration-color: var(--pink); }
.instrument figcaption { font-size: var(--s-1); color: var(--ink-2); display: grid; gap: 0.1rem; line-height: 1.7; }
.instrument figcaption span { white-space: nowrap; }
.haptic { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; overflow: hidden; }

/* 紋章(光がゆっくり通る) */
.seal { position: relative; isolation: isolate; }
.seal img { width: 100%; }
.seal::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(105deg, transparent 42%, rgba(255, 255, 255, 0.6) 50%, transparent 58%) 120% 0 / 260% 100% no-repeat;
  -webkit-mask: url("../img/seal.webp") center / contain no-repeat;
  mask: url("../img/seal.webp") center / contain no-repeat;
  mix-blend-mode: soft-light;
  animation: sheen 9s 1.2s ease-in-out infinite;
  pointer-events: none;
}
@keyframes sheen { 0%, 62% { background-position: 120% 0; } 100% { background-position: -20% 0; } }

/* お知らせ */
.news { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--rule); }
.news li { display: grid; gap: 0.25rem 2rem; padding-block: 1rem; border-bottom: 1px solid var(--rule); }
.news time { font-family: var(--f-num); font-size: 0.9rem; color: var(--ink-2); font-variant-numeric: tabular-nums; }
@media (min-width: 640px) { .news li { grid-template-columns: 11rem minmax(0, 1fr); } }

/* 役員の写真(役員章の枠) */
.portrait { margin: 0; display: grid; gap: 0.75rem; justify-items: center; text-align: center; }
.portrait img {
  width: min(15rem, 62vw); aspect-ratio: 1; border-radius: 50%;
  box-shadow: 0 0 0 1px var(--silver), 0 0 0 6px var(--paper), 0 0 0 7px var(--silver);
}
.portrait figcaption { font-family: var(--f-display); line-height: 1.6; }
.portrait figcaption span { display: block; font-size: var(--s-1); color: var(--ink-2); letter-spacing: 0.2em; }
.portrait figcaption b { font-size: var(--s1); letter-spacing: 0.12em; }
.greeting { display: grid; gap: 2rem; align-items: start; }
@media (min-width: 760px) { .greeting { grid-template-columns: 15rem minmax(0, 1fr); gap: 3rem; } }

/* 紺の帯 */
.band { background: var(--navy); color: var(--on-navy); }
.band .wrap { padding-block: 4rem; }
.band a { color: var(--on-navy); }
.decree { display: grid; gap: 2.5rem; align-items: center; }
.decree blockquote { margin: 0; display: grid; gap: 1rem; max-width: 26em; }
.decree blockquote p { font-family: var(--f-display); font-size: clamp(1.3rem, 4.6vw, 1.85rem); line-height: 1.75; letter-spacing: 0.02em; font-weight: 600; }
.decree cite { font-style: normal; font-size: var(--s-1); color: var(--on-navy-2); letter-spacing: 0.06em; line-height: 1.8; }
.film { margin: 0; display: grid; gap: 0.6rem; justify-items: center; }
.film video {
  width: min(19rem, 72vw);
  aspect-ratio: 9 / 16;
  object-fit: cover;
  border-radius: 22px;
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--on-navy) 22%, transparent), 0 30px 60px rgba(0, 0, 0, 0.35);
  background: var(--navy-2);
}
.film figcaption { font-size: var(--s-1); color: var(--on-navy-2); }
.film-frame { position: relative; }
.film-sound {
  position: absolute; right: 12px; bottom: 12px;
  font: inherit; font-size: 0.85rem; letter-spacing: 0.04em;
  min-height: 40px; padding: 0.4rem 0.95rem;
  border-radius: 999px; cursor: pointer;
  color: var(--on-navy);
  background: color-mix(in srgb, var(--navy) 55%, transparent);
  border: 1px solid color-mix(in srgb, var(--on-navy) 45%, transparent);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
}
.film-sound[aria-pressed="true"] { border-color: var(--pink); }
@media (min-width: 860px) { .decree { grid-template-columns: minmax(0, 1fr) auto; gap: 4rem; } }
@supports (animation-timeline: view()) {
  .film video {
    animation: window-open linear both;
    animation-timeline: view();
    animation-range: entry 10% cover 45%;
  }
  @keyframes window-open {
    from { clip-path: inset(14% 18% round 40px); filter: saturate(0.4) brightness(0.8); }
    to { clip-path: inset(0 round 22px); filter: none; }
  }
}

/* 入会の案内帯 */
.invite { display: grid; gap: 2rem; align-items: center; padding-block: 4rem; }
.invite img { width: min(26rem, 100%); }
.invite h2 { font-size: var(--s3); }
.invite p { color: var(--ink-2); max-width: 26em; }
@media (min-width: 760px) { .invite { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); } }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.6rem;
  min-height: 52px; padding: 0.6rem 1.6rem;
  font: inherit; font-size: 1rem; letter-spacing: 0.12em; text-decoration: none;
  background: var(--navy); color: var(--on-navy);
  border: 1px solid var(--navy); border-radius: 4px;
  cursor: pointer;
  transition: background-color 160ms, box-shadow 160ms;
}
.btn:hover { background: var(--navy-2); box-shadow: inset 0 -2px 0 var(--pink); }
.btn[disabled] { opacity: 0.55; cursor: progress; }
.btn-line { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-line:hover { background: var(--paper-2); }

/* 表(協会概要・会員種別) */
.facts { width: 100%; border-collapse: collapse; }
.facts th, .facts td { text-align: left; vertical-align: top; padding: 0.9rem 0; border-bottom: 1px solid var(--rule); }
.facts th { width: 8.5em; font-weight: 400; color: var(--ink-2); padding-right: 1.5rem; white-space: nowrap; }
.facts tr:first-child > * { border-top: 1px solid var(--ink); }
@media (max-width: 520px) {
  .facts, .facts tbody, .facts tr, .facts th, .facts td { display: block; width: auto; }
  .facts th { border-bottom: 0; padding-bottom: 0; font-size: var(--s-1); }
  .facts tr:first-child > td { border-top: 0; }
  .facts td { padding-top: 0.2rem; }
}

/* 設立趣旨(広い画面では縦書き) */
.charter p { font-family: var(--f-display); font-size: 1.15rem; line-height: 2; letter-spacing: 0.04em; }
.charter-box { overflow-x: auto; }
@media (min-width: 960px) {
  .charter-box { display: flex; justify-content: flex-end; }
  .charter { writing-mode: vertical-rl; height: 24em; display: flex; flex-direction: column; gap: 1.6em; max-width: none; font-size: 1.15rem; }
  .charter p { line-height: 2.1; letter-spacing: 0.08em; text-wrap: wrap; text-align: start; }
}

/* 役員 */
.officers { display: grid; gap: 3rem; }
.officer { display: grid; gap: 1.75rem; align-items: start; }
@media (min-width: 760px) { .officer { grid-template-columns: 15rem minmax(0, 1fr); gap: 3rem; } }
.officer h3 { font-size: var(--s1); }

/* 会則 */
.articles { list-style: none; margin: 0; padding: 0; counter-reset: art; max-width: 42em; }
.articles li { display: grid; gap: 0.15rem 1.5rem; padding-block: 1rem; border-bottom: 1px solid var(--rule); }
.articles li:first-child { border-top: 1px solid var(--ink); }
.articles h3 { font-family: var(--f-display); font-size: 1rem; letter-spacing: 0.08em; }
.articles h3 span { font-family: var(--f-num); color: var(--ink-2); margin-right: 0.75em; font-weight: 400; }
@media (min-width: 640px) { .articles li { grid-template-columns: 11rem minmax(0, 1fr); } }

/* 協会歌 */
.anthem {
  position: relative; overflow: hidden; isolation: isolate;
  border-radius: 6px;
  background: var(--navy); color: var(--on-navy);
  min-height: 15rem;
  display: grid; align-content: end;
}
.anthem video {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -1;
  filter: blur(18px) brightness(0.45) saturate(0.6);
  transform: scale(1.15);
  transition: filter 900ms var(--ease-out);
}
.anthem.is-playing video { filter: blur(4px) brightness(0.62) saturate(1); }
.anthem-inner { display: grid; gap: 1rem; padding: 1.5rem; }
.anthem h3 { font-size: var(--s2); }
.anthem-meta { font-size: var(--s-1); color: var(--on-navy-2); }
.player { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 1rem; align-items: center; }
.play {
  width: 64px; height: 64px; border-radius: 50%;
  border: 1px solid color-mix(in srgb, var(--on-navy) 50%, transparent);
  background: color-mix(in srgb, var(--on-navy) 10%, transparent);
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
  color: var(--on-navy); cursor: pointer; display: grid; place-items: center;
}
.play svg { width: 22px; height: 22px; fill: currentColor; }
.play .i-pause { display: none; }
.anthem.is-playing .play .i-play { display: none; }
.anthem.is-playing .play .i-pause { display: block; }
.seek { width: 100%; accent-color: var(--pink); }
.time { font-family: var(--f-num); font-variant-numeric: tabular-nums; font-size: 0.85rem; color: var(--on-navy-2); white-space: nowrap; }
.lyrics { display: grid; gap: 2.25rem 3rem; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); }
.lyrics p { font-family: var(--f-display); line-height: 1.9; }

/* 沿革 */
.timeline { margin: 0; display: grid; }
.timeline div { display: grid; gap: 0.2rem 2rem; padding-block: 0.9rem; border-bottom: 1px solid var(--rule); }
.timeline dt { font-family: var(--f-num); color: var(--ink-2); font-variant-numeric: tabular-nums; }
.timeline dd { margin: 0; }
@media (min-width: 640px) { .timeline div { grid-template-columns: 11rem minmax(0, 1fr); } }

/* 会員 */
.kinds { display: grid; gap: 0; border-top: 1px solid var(--ink); max-width: 44em; }
.kinds div { display: grid; gap: 0.2rem 2rem; padding-block: 1.1rem; border-bottom: 1px solid var(--rule); }
.kinds dt { font-family: var(--f-display); font-weight: 700; font-size: var(--s1); letter-spacing: 0.08em; }
.kinds dt small { font-family: var(--f-body); font-weight: 400; font-size: var(--s-1); color: var(--ink-2); margin-left: 0.5em; letter-spacing: 0.04em; }
.kinds dd { margin: 0; color: var(--ink-2); }
@media (min-width: 640px) { .kinds div { grid-template-columns: 13rem minmax(0, 1fr); align-items: baseline; } }
.fee { font-family: var(--f-display); font-size: var(--s3); font-weight: 700; letter-spacing: 0.04em; }
.perks { margin: 0; padding-left: 1.2em; display: grid; gap: 0.3rem; }
.perks li::marker { color: var(--silver); }
.steps { margin: 0; padding: 0; list-style: none; counter-reset: step; display: grid; gap: 0; max-width: 40em; }
.steps li { counter-increment: step; display: grid; grid-template-columns: 2.5rem minmax(0, 1fr); gap: 1rem; padding-block: 1rem; border-bottom: 1px solid var(--rule); }
.steps li::before { content: counter(step); font-family: var(--f-num); font-size: var(--s1); color: var(--ink-2); line-height: 1.5; }
.note { font-size: 0.9rem; color: var(--ink-2); max-width: 40em; }

.card-wrap { display: grid; gap: 0.75rem; justify-items: start; }
.member-card {
  width: min(24rem, 100%);
  aspect-ratio: 1.586;
  border-radius: 14px;
  padding: 1.2rem 1.3rem;
  display: grid; grid-template-columns: minmax(0, 1fr) auto; grid-template-rows: auto 1fr auto;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--on-navy) 10%, transparent), transparent 40%),
    var(--navy);
  color: var(--on-navy);
  box-shadow: 0 1px 0 color-mix(in srgb, var(--on-navy) 25%, transparent) inset, 0 24px 40px var(--shadow);
  position: relative; overflow: hidden;
}
.member-card::after {
  content: ""; position: absolute; inset: 0;
  background: repeating-linear-gradient(90deg, transparent 0 22px, color-mix(in srgb, var(--on-navy) 5%, transparent) 22px 23px);
  pointer-events: none;
}
.member-card .mc-org { font-family: var(--f-display); font-size: 0.82rem; letter-spacing: 0.12em; line-height: 1.5; }
.member-card .mc-seal { width: 4.4rem; grid-row: 1 / 3; grid-column: 2; }
.member-card .mc-kind { align-self: center; font-family: var(--f-display); font-size: 1.6rem; font-weight: 700; letter-spacing: 0.3em; }
.member-card .mc-no { grid-column: 1 / -1; display: flex; justify-content: space-between; align-items: end; font-family: var(--f-num); font-size: 0.85rem; color: var(--on-navy-2); }
.member-card .mc-mark { color: var(--pink); }
.sample-label { font-size: var(--s-1); color: var(--ink-2); }

/* お問い合わせ */
.form { display: grid; gap: 1.5rem; max-width: 40em; }
.field { display: grid; gap: 0.45rem; }
.field label, .field legend { font-size: 0.95rem; letter-spacing: 0.06em; }
.field label small, .field legend small { color: var(--ink-2); margin-left: 0.5em; font-size: var(--s-1); }
.field input, .field select, .field textarea {
  font: inherit; font-size: 1rem;
  width: 100%;
  padding: 0.8rem 0.9rem;
  border: 1px solid var(--rule);
  border-bottom-color: var(--ink-2);
  border-radius: 3px;
  background: var(--paper-2);
  color: var(--ink);
}
.field textarea { min-height: 11rem; resize: vertical; line-height: 1.8; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--pink); box-shadow: 0 0 0 3px color-mix(in srgb, var(--pink) 25%, transparent); }
.field .hint { font-size: var(--s-1); color: var(--ink-2); }
.trap { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-status { padding: 1rem 1.2rem; border-left: 3px solid var(--pink); background: var(--paper-2); }
.form-status:empty { display: none; }
.sent { display: grid; gap: 1rem; padding: 2rem 0; max-width: 40em; }
.sent h3 { font-size: var(--s2); }
.notice { display: grid; gap: 1rem; max-width: 40em; padding: 1.25rem 0; border-top: 1px solid var(--rule); }
.notice h3 { font-size: 1.05rem; }

/* フィジェットスライダーとは */
.lead-sec .sec-body { gap: 2rem; }
.lead-fig { margin: 0; }
.lead-fig img { width: min(36rem, 100%); }
.lead { font-family: var(--f-display); font-size: clamp(1.15rem, 4vw, 1.45rem); line-height: 1.9; max-width: 30em; font-feature-settings: "palt" 1; letter-spacing: 0.02em; }
@media (min-width: 860px) { .lead-sec { grid-template-columns: minmax(0, 1fr); } }
.photo { margin: 0; display: grid; gap: 0.6rem; max-width: 44rem; }
.photo img { width: 100%; border-radius: 3px; }
.photo figcaption, .states figcaption { font-size: var(--s-1); color: var(--ink-2); }
.photo-side img { border-radius: 0; }
.states { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.75rem 1.25rem; max-width: 44rem; }
.states figure { margin: 0; display: grid; gap: 0.5rem; align-content: start; }
.states img { width: 100%; height: 9rem; object-fit: contain; object-position: center; }
@media (max-width: 520px) { .states img { height: 6.5rem; } }
.cautions { margin: 0; padding: 0; list-style: none; display: grid; max-width: 42em; border-top: 1px solid var(--ink); }
.cautions li { padding-block: 1rem; border-bottom: 1px solid var(--rule); }
.cautions b { display: block; font-family: var(--f-display); font-size: 1.05rem; margin-bottom: 0.2rem; }
.sources { margin: 0; padding-left: 1.2em; display: grid; gap: 0.35rem; font-size: 0.9rem; max-width: 44em; }
.sources li::marker { color: var(--silver); }
.more { margin-top: 0.25rem; }
.more a { font-size: 0.95rem; }

/* オープニング(初回だけ:紋章を押印し、ヘッダーのロゴへ収める) */
.opening-veil { display: none; }
html.opening { overflow: hidden; }
html.opening .opening-veil {
  display: grid; place-items: center;
  position: fixed; inset: 0; z-index: 100;
  cursor: pointer;
  /* 動きの仕組みが読み込めなかったときは、自動で消える */
  animation: veil-auto-hide 0.5s 8s forwards;
}
html.opening .brand-seal { visibility: hidden; }
.veil-bg { position: absolute; inset: -24px; background: var(--navy); }
.veil-bg::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle at 50% 46%, color-mix(in srgb, var(--on-navy) 10%, transparent), transparent 55%);
}
.veil-seal { position: relative; width: min(72vw, 26rem); aspect-ratio: 900 / 896; opacity: 0; transform-origin: 50% 50%; will-change: transform, opacity; }
.veil-seal img { width: 100%; height: 100%; filter: drop-shadow(0 18px 30px rgba(0, 0, 0, 0.45)); }
.veil-shine {
  position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(105deg, transparent 40%, rgba(255, 255, 255, 0.85) 50%, transparent 60%) 140% 0 / 260% 100% no-repeat;
  -webkit-mask: url("../img/seal.webp") center / contain no-repeat;
  mask: url("../img/seal.webp") center / contain no-repeat;
  mix-blend-mode: soft-light; opacity: 0;
}
.veil-skip {
  position: absolute; left: 0; right: 0; bottom: calc(env(safe-area-inset-bottom, 0px) + 1.5rem);
  margin: 0; text-align: center; font-size: 0.8rem; letter-spacing: 0.1em;
  color: color-mix(in srgb, var(--on-navy) 55%, transparent);
}
@keyframes veil-auto-hide { to { opacity: 0; visibility: hidden; } }

/* フッター */
.site-foot { border-top: 1px solid var(--ink); margin-top: 0; }
.site-foot .wrap { display: grid; gap: 2rem; padding-block: 3rem calc(2.5rem + env(safe-area-inset-bottom, 0px)); }
.foot-brand { display: flex; gap: 1rem; align-items: center; }
.foot-brand img { width: 72px; height: 72px; }
.foot-brand p { font-family: var(--f-display); line-height: 1.6; }
.foot-brand small { display: block; font-size: 0.75rem; color: var(--ink-2); }
.foot-nav ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0.5rem 1.75rem; }
.foot-nav a { font-size: 0.9rem; }
.foot-legal { font-size: 0.8rem; color: var(--ink-2); display: grid; gap: 0.25rem; }
@media (min-width: 860px) {
  .site-foot .wrap { grid-template-columns: auto minmax(0, 1fr); align-items: start; }
  .foot-nav { justify-self: end; }
  .foot-legal { grid-column: 1 / -1; }
}

.lost { display: grid; gap: 1.5rem; justify-items: start; padding-block: 5rem; }
.lost img { width: min(30rem, 100%); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition-duration: 0.01ms !important; }
  ::view-transition-group(*), ::view-transition-old(*), ::view-transition-new(*) { animation: none !important; }
}