/* =========================================================
   AIRSOFT SQUAD — style.css
   色：ほぼ黒＋オリーブ＋サンド＋セーフティオレンジ（アクセントはオレンジ1色）
   ========================================================= */
:root {
  --bg: #111410;          /* ほぼ黒（少し緑がかった黒） */
  --bg-2: #181C15;
  --olive: #3E4A2F;
  --olive-2: #56653F;
  --sand: #C9B98E;
  --text: #ECE8DC;
  --text-sub: rgba(236, 232, 220, .62);
  --line: rgba(236, 232, 220, .14);
  --orange: #FF6A1A;      /* セーフティオレンジ */

  --font-head: "Big Shoulders Stencil Display", "Arial Narrow", sans-serif;
  --font-mono: "Share Tech Mono", ui-monospace, monospace;
  --font-body: "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", sans-serif;

  --ease: cubic-bezier(.16, 1, .3, 1);
  --gutter: clamp(20px, 5vw, 64px);
  --notice-h: 36px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 2;
  letter-spacing: .05em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body.is-loading { overflow: hidden; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, p, ol { margin: 0; padding: 0; }
::selection { background: var(--orange); color: var(--bg); }

/* =========================================================
   アニメーション1：オープニング（約2秒）
   ========================================================= */
.opening { position: fixed; inset: 0; z-index: 100; pointer-events: none; overflow: hidden; }
/* 真ん中の穴が広がって、ページが見えてくる（まわりは暗いまま） */
.opening__hole {
  position: absolute; left: 50%; top: 50%;
  width: 0; height: 0;
  translate: -50% -50%;
  border-radius: 50%;
  box-shadow: 0 0 0 200vmax var(--bg);
  animation: holeOpen .6s cubic-bezier(.7, 0, .3, 1) 1.35s forwards;
}
@keyframes holeOpen { to { width: 260vmax; height: 260vmax; } }
.opening__scope {
  position: absolute; left: 50%; top: 50%;
  width: min(60vmin, 360px); aspect-ratio: 1;
  translate: -50% -50%;
  animation: scopeIn 1.1s var(--ease) forwards, scopeOut .5s ease 1.4s forwards;
}
/* 照準が少しずれた位置から、中央にピタッと合う */
@keyframes scopeIn {
  0% { transform: translate(18%, -12%) scale(1.5); opacity: 0; }
  30% { opacity: 1; }
  70% { transform: translate(-3%, 2%) scale(1.02); }
  100% { transform: none; opacity: 1; }
}
@keyframes scopeOut { to { transform: scale(2.4); opacity: 0; } }
.opening__ring { position: absolute; inset: 0; border: 2px solid var(--text); border-radius: 50%; }
.opening__cross { position: absolute; background: var(--text); }
.opening__cross--h { left: -10%; right: -10%; top: 50%; height: 1px; }
.opening__cross--v { top: -10%; bottom: -10%; left: 50%; width: 1px; }
.opening__dot {
  position: absolute; left: 50%; top: 50%;
  width: 10px; height: 10px; translate: -50% -50%;
  border-radius: 50%; background: var(--orange);
  box-shadow: 0 0 14px var(--orange);
}
.opening__text {
  position: absolute; left: 50%; top: calc(50% + min(30vmin, 180px) + 28px);
  translate: -50% 0;
  font-family: var(--font-mono); font-size: 16px; letter-spacing: .3em;
  color: var(--orange);
  white-space: nowrap;
  animation: fadeOut .3s ease 1.4s forwards;
}
.caret { display: inline-block; width: .6em; height: 1em; background: var(--orange); vertical-align: -2px; margin-left: 4px; animation: blink .5s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
@keyframes fadeOut { to { opacity: 0; } }
body.is-open .opening { display: none; }

/* ---------- 常に表示：Instagramの告知バー ---------- */
.notice {
  position: fixed; top: 0; left: 0; right: 0; z-index: 55;
  height: var(--notice-h);
  display: flex; align-items: center; justify-content: center; gap: 12px;
  padding: 0 16px;
  background: var(--orange); color: var(--bg);
  font-size: 12px; font-weight: 700;
  white-space: nowrap; overflow: hidden;
}
.notice__dot { width: 8px; height: 8px; border-radius: 50%; background: var(--bg); animation: blink 1s steps(1) infinite; flex-shrink: 0; }
.notice__en, .notice__go { font-family: var(--font-mono); letter-spacing: .14em; }
.notice__ja { overflow: hidden; text-overflow: ellipsis; }
.notice__go { border-left: 1px solid rgba(17,20,16,.35); padding-left: 12px; }
@media (max-width: 599px) { .notice__en, .notice__pre { display: none; } }

/* ---------- ヘッダー ---------- */
.header {
  position: fixed; top: var(--notice-h); left: 0; right: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px var(--gutter);
  transition: background .5s var(--ease), padding .5s var(--ease);
}
.header.is-scrolled { background: rgba(17, 20, 16, .88); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); padding-top: 10px; padding-bottom: 10px; }
.header__logo { font-family: var(--font-head); font-weight: 900; font-size: 26px; letter-spacing: .08em; line-height: 1; }
.header__logo span, .footer__logo span { color: var(--orange); }
.header__nav { display: none; gap: 30px; margin-right: 250px; }
.header__nav a { font-family: var(--font-mono); font-size: 13px; letter-spacing: .14em; text-transform: uppercase; position: relative; }
.header__nav a::before { content: "> "; color: var(--orange); opacity: 0; transition: opacity .3s; }
.header__nav a:hover::before { opacity: 1; }
@media (min-width: 900px) { .header__nav { display: flex; } }

/* ---------- ファーストビュー ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid; align-content: center;
  padding: calc(var(--notice-h) + 110px) var(--gutter) 120px;
  overflow: hidden;
}
/* 地図のようなグリッド */
.hero__grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at 60% 50%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at 60% 50%, #000 20%, transparent 75%);
}
.hero__inner { position: relative; max-width: 1080px; margin: 0 auto; width: 100%; }
.hero__en { font-family: var(--font-mono); color: var(--orange); letter-spacing: .2em; margin-bottom: 14px; }
.hero__title {
  font-weight: 700;
  font-size: clamp(40px, 8.8vw, 104px);
  line-height: 1.3;
  letter-spacing: .02em;
}
.hero__title span { color: var(--sand); }
.hero__lead { margin-top: 28px; color: var(--text-sub); }
.hero__coord {
  position: absolute; right: var(--gutter); bottom: 96px;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: .2em; color: var(--text-sub);
}
@media (min-width: 900px) { .hero__coord { bottom: 40px; } }
@media (max-width: 899px) { .hero__coord { display: none; } }   /* スマホでは背景の計器と重なるので出さない */

/* ---------- 流れる文字 ---------- */
.marquee { background: var(--olive); overflow: hidden; padding: 10px 0; border-top: 1px solid var(--olive-2); border-bottom: 1px solid var(--olive-2); }
.marquee__track {
  display: flex; align-items: center; gap: 28px;
  width: max-content;
  animation: marquee 28s linear infinite;
  font-family: var(--font-head); font-weight: 900;
  font-size: clamp(30px, 5vw, 56px); line-height: 1.1;
  text-transform: uppercase; letter-spacing: .06em;
  white-space: nowrap;
}
.marquee__track .o { color: var(--orange); }
.marquee__track i { font-style: normal; font-size: .4em; color: var(--sand); }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- 見出し ---------- */
.sec-title { display: flex; flex-direction: column; gap: 6px; margin-bottom: clamp(40px, 7vw, 72px); }
.sec-title__en { font-family: var(--font-head); font-weight: 900; font-size: clamp(56px, 10vw, 112px); line-height: .95; letter-spacing: .04em; text-transform: uppercase; }
.sec-title__ja { font-family: var(--font-mono); font-size: 13px; letter-spacing: .2em; color: var(--orange); }
.sec-title__ja::before { content: "// "; }

.fade { opacity: 0; transform: translateY(28px); transition: opacity 1s var(--ease), transform 1s var(--ease); }
.fade.is-in { opacity: 1; transform: none; }

.briefing, .field, .rules, .flow, .qa { padding: clamp(96px, 13vw, 160px) var(--gutter); }
.briefing > *, .field > *, .rules > *, .flow > *, .qa > * { max-width: 1080px; margin-left: auto; margin-right: auto; }
.briefing__text { font-size: clamp(18px, 2.4vw, 24px); font-weight: 500; line-height: 2.1; }

/* =========================================================
   アニメーション2【3D】：作戦エリア
   上から見た地図 → 約2秒で斜めの視点に倒れ込み、箱が立ち上がる → ゆっくり回り続ける
   ========================================================= */
.field { background: var(--bg-2); overflow: hidden; }
.field__stage {
  position: relative;
  height: clamp(360px, 70vw, 560px);
  perspective: 1400px;
  max-width: none !important;
}
.field__fit {
  position: absolute; left: 50%; top: 50%;
  width: 520px; height: 520px;
  margin: -260px 0 0 -260px;              /* 画面の真ん中に置く */
  transform: scale(var(--s, 1));
  transform-style: preserve-3d;
}
.field__map {
  position: relative;
  width: 520px; height: 520px;
  transform-style: preserve-3d;
  transform: rotateX(0deg) rotateZ(0deg) scale(.82);
  transition: transform 2s cubic-bezier(.65, 0, .25, 1);
}
.field__stage.is-in .field__map { transform: rotateX(58deg) rotateZ(-32deg) scale(1); }
/* 倒れ込んだあと、ゆっくり回り続ける（JSで is-spin を付ける） */
.field__stage.is-spin .field__map { transition: none; animation: mapSpin 48s linear infinite; }
@keyframes mapSpin {
  from { transform: rotateX(58deg) rotateZ(-32deg); }
  to   { transform: rotateX(58deg) rotateZ(328deg); }
}
.field__ground {
  position: absolute; inset: 0;
  background:
    linear-gradient(rgba(201,185,142,.16) 1px, transparent 1px) 0 0 / 40px 40px,
    linear-gradient(90deg, rgba(201,185,142,.16) 1px, transparent 1px) 0 0 / 40px 40px,
    radial-gradient(circle at 30% 70%, #4A5836, transparent 45%),
    radial-gradient(circle at 75% 25%, #45522F, transparent 40%),
    var(--olive);
  border: 2px solid var(--sand);
  box-shadow: 0 0 80px rgba(0,0,0,.6);
}
/* 立体の箱（面はJSで作る） */
.box {
  position: absolute; left: var(--x); top: var(--y);
  width: var(--w); height: var(--d);
  transform-style: preserve-3d;
  transform: scaleZ(.01);
  transform-origin: 50% 50% 0;
  transition: transform .7s cubic-bezier(.34, 1.56, .64, 1);
  transition-delay: calc(1.1s + var(--i) * .1s);
}
.field__stage.is-in .box { transform: scaleZ(1); }
.box__f { position: absolute; backface-visibility: visible; }
.box__top { left: 0; top: 0; width: var(--w); height: var(--d); transform: translateZ(var(--h)); background: #D6C79E; box-shadow: inset 0 0 0 1px rgba(0,0,0,.18); }
.box__n, .box__s { left: 0; width: var(--w); height: var(--h); transform-origin: top; transform: rotateX(90deg); }
.box__n { top: 0; background: #8E8062; }
.box__s { top: var(--d); background: #A99A74; }
.box__w, .box__e { top: 0; width: var(--h); height: var(--d); transform-origin: left; transform: rotateY(-90deg); }
.box__w { left: 0; background: #7B6F55; }
.box__e { left: var(--w); background: #B3A47D; }
/* 旗（目標地点）：地面で光る */
.flag {
  position: absolute; left: var(--x); top: var(--y);
  width: 30px; height: 30px; translate: -50% -50%;
  display: grid; place-items: center;
  border-radius: 50%;
  font-family: var(--font-mono); font-size: 14px; font-weight: 700;
  color: var(--bg); background: var(--orange);
  box-shadow: 0 0 0 0 rgba(255,106,26,.6);
  animation: flagPulse 1.8s ease-out infinite;
}
.flag--b { background: var(--sand); animation-delay: .9s; }
@keyframes flagPulse { 70% { box-shadow: 0 0 0 18px rgba(255,106,26,0); } 100% { box-shadow: 0 0 0 0 rgba(255,106,26,0); } }
/* Three.js のリアルな3Dが使えるときは、CSS版の地図を隠してキャンバスを表示 */
.field__stage.is-webgl {
  height: clamp(420px, 62vw, 640px);
  background: linear-gradient(180deg, #c9c7a6 0%, #a9ab8c 45%, #8f957a 100%);   /* 夕方の空 */
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  margin-left: calc(var(--gutter) * -1) !important; margin-right: calc(var(--gutter) * -1) !important;
}
.field__stage.is-webgl .field__fit { display: none; }
.field__canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.field__stage.is-webgl::after {   /* ふちを暗くして、画面になじませる */
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(ellipse at 50% 55%, transparent 55%, rgba(17,20,16,.55) 100%);
}
.field__text { margin-top: 8px !important; color: var(--text-sub); text-align: center; }

/* =========================================================
   アニメーション3：レーダー（約2秒で1周して、次の作戦を表示）
   ========================================================= */
.radar-sec {
  display: grid; gap: 48px; align-items: center;
  padding: clamp(96px, 13vw, 160px) var(--gutter);
  max-width: calc(1080px + var(--gutter) * 2); margin: 0 auto;
}
@media (min-width: 900px) { .radar-sec { grid-template-columns: 1fr 1fr; gap: 80px; } }
.radar {
  position: relative;
  width: min(80vw, 420px); aspect-ratio: 1;
  margin: 0 auto;
  border-radius: 50%;
  background: radial-gradient(circle, #1C2A18 0%, #10170E 70%);
  border: 2px solid var(--olive-2);
  overflow: hidden;
  box-shadow: 0 0 60px rgba(86,101,63,.35), inset 0 0 40px rgba(0,0,0,.6);
  container-type: inline-size;   /* 点の位置をレーダーの大きさに合わせる */
}
.radar__ring { position: absolute; left: 50%; top: 50%; translate: -50% -50%; border: 1px solid rgba(143,190,110,.28); border-radius: 50%; }
.radar__ring--1 { width: 33%; height: 33%; }
.radar__ring--2 { width: 66%; height: 66%; }
.radar__ring--3 { width: 99%; height: 99%; }
.radar__axis { position: absolute; background: rgba(143,190,110,.22); }
.radar__axis--h { left: 0; right: 0; top: 50%; height: 1px; }
.radar__axis--v { top: 0; bottom: 0; left: 50%; width: 1px; }
.radar__sweep {
  position: absolute; inset: 0; border-radius: 50%;
  background: conic-gradient(from 0deg, rgba(143,230,110,0) 0deg, rgba(143,230,110,0) 300deg, rgba(143,230,110,.45) 358deg, rgba(190,255,160,.9) 360deg);
  opacity: 0;
}
/* 最初の1周は2秒。そのあとはゆっくり回り続ける */
.radar.is-in .radar__sweep { opacity: 1; animation: sweep 2s linear, sweep 5s linear 2s infinite; }
@keyframes sweep { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
.radar__blip {
  position: absolute; left: 50%; top: 50%;
  width: 12px; height: 12px; margin: -6px 0 0 -6px;
  border-radius: 50%;
  background: #9BFF7A;
  box-shadow: 0 0 12px #9BFF7A;
  transform: rotate(var(--a)) translateY(calc(var(--r) * -1cqw)) scale(0);
  opacity: 0;
}
.radar.is-in .radar__blip { animation: blip .6s ease-out var(--t) forwards; }
.radar__blip--target { background: var(--orange); box-shadow: 0 0 16px var(--orange); width: 16px; height: 16px; margin: -8px 0 0 -8px; }
@keyframes blip {
  0% { opacity: 0; transform: rotate(var(--a)) translateY(calc(var(--r) * -1cqw)) scale(0); }
  40% { opacity: 1; transform: rotate(var(--a)) translateY(calc(var(--r) * -1cqw)) scale(1.6); }
  100% { opacity: 1; transform: rotate(var(--a)) translateY(calc(var(--r) * -1cqw)) scale(1); }
}
.radar-sec__label { font-family: var(--font-mono); color: var(--orange); letter-spacing: .3em; }
.radar-sec__date { font-family: var(--font-mono); font-size: clamp(28px, 4vw, 40px); letter-spacing: .1em; margin: 6px 0 18px; }
.radar-sec__date span { color: var(--orange); animation: blink 1s steps(1) infinite; }
.radar-sec__title { font-size: clamp(28px, 4.4vw, 48px); font-weight: 700; line-height: 1.45; margin-bottom: 18px; }
.radar-sec__lead { color: var(--text-sub); }

/* ---------- Rules ---------- */
.rules { background: var(--bg-2); }
.rules__list { display: grid; gap: 16px; }
.rules__item {
  position: relative;
  padding: 32px 28px 30px;
  border: 1px solid var(--line);
  background: linear-gradient(135deg, rgba(62,74,47,.35), transparent 60%);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);   /* 角を1つ切り落とす */
  transition: border-color .4s, transform .5s var(--ease), opacity 1s var(--ease);
}
.rules__item:hover { border-color: var(--orange); transform: translateY(-4px); }
.rules__num { font-family: var(--font-head); font-weight: 900; font-size: 56px; line-height: 1; color: var(--orange); }
.rules__item h3 { font-size: 20px; font-weight: 700; margin: 10px 0 8px; }
.rules__item p:not(.rules__num) { color: var(--text-sub); font-size: 14px; }
@media (min-width: 900px) { .rules__list { grid-template-columns: repeat(3, 1fr); gap: 24px; } }

/* ---------- Flow ---------- */
.flow__list { list-style: none; display: grid; gap: 0; border-left: 2px solid var(--olive-2); }
.flow__step { position: relative; padding: 4px 0 36px 28px; }
.flow__step::before { content: ""; position: absolute; left: -8px; top: 12px; width: 14px; height: 14px; background: var(--orange); transform: rotate(45deg); }
.flow__num { font-family: var(--font-mono); color: var(--orange); letter-spacing: .2em; font-size: 13px; }
.flow__step h3 { font-size: 20px; font-weight: 700; }
.flow__step p { color: var(--text-sub); font-size: 14px; }

/* ---------- Q&A ---------- */
.qa { background: var(--bg-2); }
.qa__list { border-top: 1px solid var(--line); max-width: 820px !important; }
.qa__item { border-bottom: 1px solid var(--line); }
.qa__item summary { list-style: none; cursor: pointer; position: relative; padding: 22px 44px 22px 44px; font-weight: 500; font-size: 16px; }
.qa__item summary::-webkit-details-marker { display: none; }
.qa__item summary::before { content: "Q."; position: absolute; left: 4px; top: 20px; font-family: var(--font-mono); font-size: 18px; color: var(--orange); }
.qa__item summary::after { content: "+"; position: absolute; right: 10px; top: 50%; translate: 0 -50%; font-family: var(--font-mono); font-size: 24px; color: var(--sand); transition: transform .4s var(--ease); }
.qa__item[open] summary::after { transform: rotate(45deg); }
.qa__item p { padding: 0 20px 26px 44px; color: var(--text-sub); font-size: 14px; }

/* =========================================================
   アニメーション4：着弾（約2秒）的に3発当たり、ボタンが出る
   ========================================================= */
.cta {
  position: relative;
  padding: clamp(100px, 14vw, 170px) var(--gutter) clamp(120px, 15vw, 180px);
  text-align: center;
  overflow: hidden;
}
.target {
  position: relative;
  width: min(60vw, 260px); aspect-ratio: 1;
  margin: 0 auto 40px;
  border-radius: 50%;
  background: var(--sand);
}
.target.is-in { animation: shake .3s ease .3s, shake .3s ease .8s, shake .4s ease 1.3s; }
@keyframes shake { 25% { transform: translate(3px, -2px) rotate(1deg); } 50% { transform: translate(-3px, 2px); } 75% { transform: translate(2px, 1px) rotate(-1deg); } }
.target__ring { position: absolute; left: 50%; top: 50%; translate: -50% -50%; border-radius: 50%; }
.target__ring--1 { width: 80%; height: 80%; background: var(--bg); }
.target__ring--2 { width: 58%; height: 58%; background: var(--sand); }
.target__ring--3 { width: 36%; height: 36%; background: var(--bg); }
.target__center { position: absolute; left: 50%; top: 50%; width: 14%; height: 14%; translate: -50% -50%; border-radius: 50%; background: var(--orange); }
.hit {
  position: absolute; left: var(--x); top: var(--y);
  width: 16px; height: 16px; translate: -50% -50%;
  border-radius: 50%;
  background: radial-gradient(circle, #FFF 0 25%, var(--orange) 26% 55%, transparent 56%);
  opacity: 0; transform: scale(0);
}
.hit::after {   /* 当たった瞬間の波紋 */
  content: ""; position: absolute; inset: -6px; border-radius: 50%;
  border: 2px solid var(--orange); opacity: 0;
}
.target.is-in .hit { animation: hitIn .25s cubic-bezier(.34, 1.56, .64, 1) var(--t) forwards; }
.target.is-in .hit::after { animation: ripple .6s ease-out var(--t) forwards; }
.hit--bull { width: 20px; height: 20px; }
@keyframes hitIn { to { opacity: 1; transform: scale(1); } }
@keyframes ripple { 0% { opacity: 1; transform: scale(.4); } 100% { opacity: 0; transform: scale(3); } }
.cta__en { font-family: var(--font-mono); color: var(--orange); letter-spacing: .2em; margin-bottom: 10px; }
.cta__title { font-size: clamp(34px, 7vw, 72px); font-weight: 700; line-height: 1.35; margin-bottom: 36px; }
.btn {
  display: inline-flex; align-items: center; gap: 16px;
  padding: 20px 40px;
  background: var(--orange); color: var(--bg);
  font-size: 16px; font-weight: 700; letter-spacing: .1em;
  clip-path: polygon(14px 0, 100% 0, calc(100% - 14px) 100%, 0 100%);
  transition: background .4s, transform .4s var(--ease);
}
.btn:hover { background: #FF8646; }
.btn__arrow { transition: transform .4s var(--ease); }
.btn:hover .btn__arrow { transform: translateX(5px); }
/* 3発目が当たったあとに、ボタンが飛び出す */
.js-cta-btn { opacity: 0; transform: translateY(20px) scale(.9); }
.cta.is-armed .js-cta-btn { animation: btnPop .5s cubic-bezier(.34, 1.56, .64, 1) 1.55s forwards; }
@keyframes btnPop { to { opacity: 1; transform: none; } }

/* ---------- フッター ---------- */
.footer { padding: 60px var(--gutter) 120px; text-align: center; border-top: 1px solid var(--line); }
.footer__logo { font-family: var(--font-head); font-weight: 900; font-size: clamp(48px, 10vw, 96px); letter-spacing: .06em; line-height: 1; margin-bottom: 18px; }
.footer__info { font-size: 13px; color: var(--text-sub); margin-bottom: 26px; }
.footer__copy { font-family: var(--font-mono); color: var(--text-sub); }

/* ---------- 常に表示：Instagramボタン ---------- */
.ig-float {
  position: fixed; z-index: 60;
  left: 16px; right: 16px; bottom: 16px;
  display: flex; align-items: center; justify-content: center; gap: 10px;
  padding: 15px 24px;
  background: var(--orange); color: var(--bg);
  font-size: 15px; font-weight: 700; letter-spacing: .08em;
  clip-path: polygon(12px 0, 100% 0, calc(100% - 12px) 100%, 0 100%);
  box-shadow: 0 10px 30px rgba(0,0,0,.4);
  transition: background .4s;
}
.ig-float:hover { background: #FF8646; }
.ig-float__icon { width: 20px; height: 20px; flex-shrink: 0; }
@media (min-width: 900px) {
  .ig-float { left: auto; right: var(--gutter); top: calc(var(--notice-h) + 10px); bottom: auto; padding: 10px 24px; font-size: 14px; }
}

.toast {
  position: fixed; left: 50%; bottom: 90px; z-index: 70; translate: -50% 0;
  width: max-content; max-width: calc(100% - 32px);
  padding: 10px 20px;
  background: var(--text); color: var(--bg); font-size: 13px;
  opacity: 0; transform: translateY(10px); pointer-events: none;
  transition: opacity .4s var(--ease), transform .4s var(--ease);
}
.toast.is-show { opacity: 1; transform: none; }
@media (min-width: 900px) { .toast { bottom: auto; top: calc(var(--notice-h) + 70px); left: auto; right: var(--gutter); translate: none; } }

/* =========================================================
   背景：自分目線の撃ち合いシーン（ページのうしろに固定）
   スクロールで前に進み、撃ち合いはずっと続く
   ========================================================= */
.fps { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
/* 文章を読みやすくするための暗い幕（トップでは薄め、スクロールすると濃く） */
.fps::after { content: ""; position: absolute; inset: 0; background: rgba(12, 14, 11, var(--dim, .3)); transition: background .4s; }
.fps__view { position: absolute; inset: -2%; animation: breath 6s ease-in-out infinite; }
@keyframes breath { 50% { transform: translate(-6px, 4px) rotate(-.3deg); } }
.fps__sky {
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, #1B231A 0%, #3C4630 44%, #6B6B4A 52%, #2E3524 52.2%, #20261A 70%, #171B13 100%);
}
.fps__layer { position: absolute; inset: 0; transform-origin: 50% 62%; transform: scale(calc(1 + var(--depth) * var(--p, 0) * .9)); }
.fps__layer--far  { --depth: .18; }
.fps__layer--mid  { --depth: .45; }
.fps__layer--near { --depth: 1; }
/* 遠くの森 */
.fps__trees {
  position: absolute; left: -5%; right: -5%; top: 42%; height: 10.5%; opacity: .85;
  background:
    radial-gradient(ellipse 5% 60% at 4% 100%, #1A2116 98%, transparent 100%),
    radial-gradient(ellipse 7% 80% at 14% 100%, #151B12 98%, transparent 100%),
    radial-gradient(ellipse 6% 70% at 27% 100%, #1A2116 98%, transparent 100%),
    radial-gradient(ellipse 8% 90% at 40% 100%, #141A11 98%, transparent 100%),
    radial-gradient(ellipse 6% 65% at 56% 100%, #1A2116 98%, transparent 100%),
    radial-gradient(ellipse 8% 85% at 69% 100%, #151B12 98%, transparent 100%),
    radial-gradient(ellipse 6% 70% at 83% 100%, #1A2116 98%, transparent 100%),
    radial-gradient(ellipse 7% 80% at 96% 100%, #141A11 98%, transparent 100%);
}
/* 物かげ（バリケード） */
.cover { position: absolute; left: var(--x); bottom: calc(var(--y) - 4px); width: var(--cw); height: var(--ch); translate: -50% 0; }
.cover--far { background: radial-gradient(ellipse at 50% 100%, #2A3320 60%, transparent 62%); }
.cover--wall {   /* 土のう */
  border-radius: 18px 18px 4px 4px;
  background:
    radial-gradient(ellipse 18% 36% at 12% 30%, #8C7D5A 90%, transparent 100%),
    radial-gradient(ellipse 18% 36% at 36% 30%, #978762 90%, transparent 100%),
    radial-gradient(ellipse 18% 36% at 60% 30%, #8C7D5A 90%, transparent 100%),
    radial-gradient(ellipse 18% 36% at 84% 30%, #978762 90%, transparent 100%),
    linear-gradient(#7C6E4F, #5F5540);
  box-shadow: 0 10px 20px rgba(0,0,0,.4);
}
.cover--crate {  /* 木箱 */
  background:
    linear-gradient(45deg, transparent 47%, #4E4331 47% 53%, transparent 53%),
    repeating-linear-gradient(180deg, #7A6545 0 26px, #5E4E36 26px 28px);
  border: 4px solid #4E4331;
  box-shadow: 0 10px 20px rgba(0,0,0,.4);
}
.cover--near-l, .cover--near-r { bottom: -6%; translate: none; }
.cover--near-l {  /* 手前左の木の幹 */
  left: -4%; width: 18%; height: 110%;
  background: linear-gradient(90deg, #0E110C, #232A1C 70%, #151A11);
  border-radius: 0 40% 0 0;
}
.cover--near-r {  /* 手前右の草むら */
  left: auto; right: -8%; width: 40%; height: 26%;
  background:
    radial-gradient(ellipse 30% 70% at 20% 100%, #192015 95%, transparent 100%),
    radial-gradient(ellipse 34% 90% at 55% 100%, #121710 95%, transparent 100%),
    radial-gradient(ellipse 30% 80% at 88% 100%, #192015 95%, transparent 100%);
}
/* 相手（顔の見えないシルエット） */
.enemy {
  position: absolute; left: var(--x); bottom: var(--y);
  width: var(--w); height: calc(var(--w) * 1.5 + 34px);   /* 上の34pxは「HIT!」の吹き出し用 */
  translate: -50% 0;
  overflow: hidden;   /* 地面より下は見せない（隠れているときは下に沈める） */
}
.enemy svg { position: absolute; left: 0; bottom: 0; display: block; width: 100%; height: calc(var(--w) * 1.5); overflow: visible; transform: translateY(105%); transition: transform .35s cubic-bezier(.2, .9, .3, 1.2); }
.enemy.is-peek svg { transform: translateY(0); }
.enemy__body, .enemy__arm { fill: #4A5439; stroke: #D8C89A; stroke-width: 1.5; paint-order: stroke; }
.enemy svg { filter: drop-shadow(0 0 6px rgba(216,200,154,.45)); }
.enemy__goggle { fill: #FFD27A; stroke: none; }
.enemy__arm { transform-box: view-box; transform-origin: 56px 40px; transition: transform .3s cubic-bezier(.34, 1.56, .64, 1); }
.enemy.is-hit .enemy__arm { transform: rotate(-165deg); }   /* 当たったら手を挙げる（エアソフトのルール） */
.enemy__hit {
  position: absolute; left: 50%; top: 2px; translate: -50% 0;
  padding: 2px 8px; white-space: nowrap;
  background: var(--orange); color: var(--bg);
  font-family: var(--font-mono); font-size: 13px; font-weight: 700; letter-spacing: .1em;
  opacity: 0; transform: scale(.4);
  transition: opacity .2s, transform .3s cubic-bezier(.34, 1.56, .64, 1);
}
.enemy.is-hit .enemy__hit { opacity: 1; transform: scale(1); }
/* 照準 */
.fps__cross {
  position: absolute; left: var(--cx, 50%); top: var(--cy, 48%);
  width: 56px; height: 56px; translate: -50% -50%;
  border: 1.5px solid rgba(236,232,220,.8); border-radius: 50%;
  transition: left .35s var(--ease), top .35s var(--ease);
}
.fps__cross::before, .fps__cross::after { content: ""; position: absolute; background: rgba(236,232,220,.8); }
.fps__cross::before { left: 50%; top: -12px; bottom: -12px; width: 1px; }
.fps__cross::after { top: 50%; left: -12px; right: -12px; height: 1px; }
.fps__cross span { position: absolute; left: 50%; top: 50%; width: 5px; height: 5px; translate: -50% -50%; border-radius: 50%; background: var(--orange); }
.fps__cross.is-lock { border-color: var(--orange); }
/* 自分の銃 */
.fps__gun { position: absolute; right: -2%; bottom: -3%; width: min(62vw, 560px); height: auto; overflow: visible; }
@media (max-width: 899px) { .fps__gun { width: 80vw; bottom: 60px; } }
.gun { animation: gunIdle 3s ease-in-out infinite; transform-box: view-box; transform-origin: 300px 200px; }
@keyframes gunIdle { 50% { transform: translate(-3px, 4px); } }
.gun.is-recoil { animation: recoil .1s ease-out; }
@keyframes recoil { 40% { transform: translate(10px, 7px) rotate(1.2deg); } }
/* 発射の光と弾の軌跡 */
.fps__fx { position: absolute; inset: 0; }
.flash {
  position: absolute; width: 60px; height: 60px; translate: -50% -50%;
  border-radius: 50%;
  background: radial-gradient(circle, #FFF6D0 0%, #FFB347 30%, rgba(255,106,26,.5) 55%, transparent 70%);
  animation: flash .09s ease-out forwards;
}
@keyframes flash { from { transform: scale(.4); opacity: 1; } to { transform: scale(1.2); opacity: 0; } }
.tracer {
  position: absolute; height: 2px;
  transform-origin: 0 50%;
  background: linear-gradient(90deg, rgba(255,230,160,0), #FFE3A0 70%, #FFF);
  box-shadow: 0 0 8px #FFB347;
  animation: tracer .16s linear forwards;
}
@keyframes tracer { 0% { transform: rotate(var(--ang)) scaleX(0); opacity: 1; } 70% { opacity: 1; } 100% { transform: rotate(var(--ang)) scaleX(1); opacity: 0; } }
.impact { position: absolute; width: 18px; height: 18px; translate: -50% -50%; border-radius: 50%; border: 2px solid #FFE3A0; animation: ripple .4s ease-out forwards; }
/* 画面の計器（HUD） */
.hud {
  position: absolute; left: calc(2% + 24px);
  font-family: var(--font-mono); font-size: 13px; letter-spacing: .14em; line-height: 1.7;
  color: rgba(236,232,220,.85);
  text-shadow: 0 0 6px rgba(0,0,0,.6);
}
.hud b { color: var(--orange); font-weight: 400; font-size: 18px; }
.hud--tl { bottom: 110px; }
.hud--tr { bottom: 84px; }
@media (min-width: 900px) { .hud--tl { bottom: 70px; } .hud--tr { bottom: 44px; } }
.fps__reload {
  position: absolute; left: 50%; top: 60%; translate: -50% 0;
  font-family: var(--font-mono); letter-spacing: .3em; color: var(--orange);
  opacity: 0; transition: opacity .2s;
}
.fps__reload.is-show { opacity: 1; animation: blink .4s steps(1) infinite; }

/* Three.js の3D版が動いているときは、CSS版の景色を隠す（照準と計器はそのまま使う） */
.fps__canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.fps.is-webgl { background: linear-gradient(180deg, #7d8468 0%, #a9ab8c 38%, #c9c7a6 60%, #9a9c80 100%); }   /* 夕方の空 */
.fps.is-webgl .fps__view { inset: 0; animation: none; }
.fps.is-webgl .fps__sky, .fps.is-webgl .fps__layer, .fps.is-webgl .fps__gun, .fps.is-webgl .fps__fx { display: none; }
.fps.is-webgl .fps__cross { left: 50%; top: 50%; width: 44px; height: 44px; }   /* 視点が相手を向くので、照準は真ん中に固定 */

/* 本文は背景の上に重ねる。セクションは半透明にして、うしろのシーンが透けて見えるように */
main, .footer { position: relative; z-index: 1; }
.briefing, .radar-sec, .flow, .cta, .footer { background: rgba(17, 20, 16, .5); }
.field, .rules, .qa { background: rgba(24, 28, 21, .72); }
.radar-sec { max-width: none; }
.radar-sec > * { max-width: 540px; width: 100%; margin: 0 auto; }
.briefing, .radar-sec, .flow, .cta, .field, .rules, .qa { backdrop-filter: blur(1.5px); -webkit-backdrop-filter: blur(1.5px); }

/* ---------- 動きを減らす設定の人には止める ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .fade, .js-cta-btn, .hit, .radar__blip { opacity: 1 !important; transform: none !important; }
  .radar__blip { transform: rotate(var(--a)) translateY(calc(var(--r) * -1cqw)) !important; }
  .field__map { transform: rotateX(58deg) rotateZ(-32deg) !important; }
  .box { transform: none !important; }
  .opening { display: none; }
  .enemy svg { transform: translateY(18%) !important; }
}