@charset "UTF-8";

/* =========================================================
   BRAINCORE - デザイン別バージョン v2
   コンセプト：SOLID × GIMMICK（硬派・骨太・高コントラスト＋演出）
   ========================================================= */

:root {
  --ink:     #16213f;   /* 紺（濃） 罫線・ダーク背景・見出し */
  --ink-2:   #0f1830;   /* さらに濃い紺 */
  --paper:   #ffffff;   /* 白基調 */
  --paper-2: #eef1f7;   /* 淡いブルーグレー */
  --navy:    #1b2a52;
  --accent:  #c89b3c;   /* ゴールド */
  --accent-2:#2f3384;   /* 差し色（ブルー） */
  --line:    #16213f;
  --gray:    #5c6470;
  --font-jp: "Hiragino Kaku Gothic ProN", "ヒラギノ角ゴ ProN",
             "Yu Gothic", "游ゴシック", "Meiryo", "メイリオ", sans-serif;
  --font-en: "Helvetica Neue", Arial, sans-serif;
  --maxw:    1200px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-jp);
  background: var(--paper);
  color: #2f343c;
  line-height: 1.9;
  font-size: 15px;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; border: 0; }
a { color: var(--ink); text-decoration: none; }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }

/* ===== スクロール進捗バー（ギミック） ===== */
.progress {
  position: fixed; top: 0; left: 0; height: 4px; width: 0%;
  background: var(--accent); z-index: 200;
  transition: width .08s linear;
}

/* ===== ヘッダー / ナビ ===== */
.hdr {
  position: sticky; top: 0; z-index: 100;
  background: var(--paper);
  border-bottom: 3px solid var(--ink);
}
.hdr-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 16px 0; }
.brand img { width: 200px; height: auto; }
.gnav ul { display: flex; list-style: none; margin: 0; padding: 0; gap: 4px; }
.gnav a {
  display: block; position: relative;
  font-family: var(--font-en);
  font-weight: 800; font-size: 13px; letter-spacing: 0.16em;
  padding: 10px 14px; text-transform: uppercase;
}
.gnav a::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 6px;
  height: 2px; background: var(--ink);
  transform: scaleX(0); transform-origin: left; transition: transform .3s ease;
}
.gnav a:hover::after { transform: scaleX(1); }
.gnav a.current { color: var(--accent-2); }
.gnav a.current::after { background: var(--accent-2); transform: scaleX(1); }
.gnav .jp { display: none; }

.burger {
  display: none; width: 48px; height: 48px; border: 3px solid var(--ink);
  background: var(--paper); cursor: pointer; position: relative; padding: 0; flex: none;
}
.burger span { position: absolute; left: 11px; width: 22px; height: 3px; background: var(--ink); transition: transform .25s, opacity .2s; }
.burger span:nth-child(1) { top: 14px; }
.burger span:nth-child(2) { top: 21px; }
.burger span:nth-child(3) { top: 28px; }
.burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== マーキー（流れるタグライン・ギミック） ===== */
.marquee {
  background: var(--ink); color: var(--paper); overflow: hidden; white-space: nowrap;
  border-bottom: 3px solid var(--ink);
}
.marquee__track { display: inline-block; padding: 10px 0; animation: marq 22s linear infinite; }
.marquee span { font-family: var(--font-en); font-weight: 800; letter-spacing: 0.2em; font-size: 14px; margin: 0 28px; }
.marquee span i { color: var(--accent); font-style: normal; }
@keyframes marq { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ===== ヒーロー（index） ===== */
.hero2 { background: var(--ink); color: var(--paper); padding: 60px 0 70px; position: relative; overflow: hidden; }
.hero2::before {
  content: "BRAINCORE"; position: absolute; right: -2%; bottom: -22px;
  font-family: var(--font-en); font-weight: 900; font-size: 18vw; line-height: 1;
  color: rgba(255,255,255,0.04); letter-spacing: -0.02em; pointer-events: none;
}
.hero2 .wrap { position: relative; z-index: 1; }
.hero2-eyebrow { font-family: var(--font-en); font-weight: 800; letter-spacing: 0.4em; color: var(--accent); font-size: 13px; }
.hero2-title { font-size: clamp(26px, 4.6vw, 50px); font-weight: 900; line-height: 1.35; letter-spacing: 0.02em; margin: 14px 0 28px; }
.hero2-title b { color: var(--accent); }
.swf-frame2 {
  position: relative; width: 100%; max-width: 760px; aspect-ratio: 740 / 350;
  border: 4px solid var(--paper); background: #fff; overflow: hidden;
  box-shadow: 14px 14px 0 var(--accent);
}
.swf-frame2 > #v2flash { position: absolute !important; top: 0 !important; left: 0 !important; width: 100% !important; height: 100% !important; }

/* ===== セクション共通 ===== */
.sec { padding: 84px 0; position: relative; }
.sec.dark { background: var(--ink); color: var(--paper); }
.sec.tint { background: var(--paper-2); }
.sec-head { display: flex; align-items: baseline; gap: 18px; margin-bottom: 40px; flex-wrap: wrap; }
.sec-num { font-family: var(--font-en); font-weight: 900; font-size: 22px; color: var(--accent-2); letter-spacing: 0.05em; }
.sec-title { font-size: clamp(22px, 3vw, 34px); font-weight: 900; letter-spacing: 0.04em; margin: 0; }
.sec-title .en { display: block; font-family: var(--font-en); font-size: 13px; letter-spacing: 0.3em; color: var(--gray); font-weight: 800; margin-bottom: 6px; }
.sec.dark .sec-title .en { color: var(--accent); }
.lead2 { font-size: clamp(15px, 1.4vw, 17px); line-height: 2.1; max-width: none; }

/* ページ見出し帯 */
.phead { background: var(--ink); color: var(--paper); padding: 70px 0 64px; position: relative; overflow: hidden; }
.phead::after {
  content: attr(data-ghost); position: absolute; right: 2%; top: 50%; transform: translateY(-50%);
  font-family: var(--font-en); font-weight: 900; font-size: 13vw; color: rgba(255,255,255,0.05); pointer-events: none; white-space: nowrap;
}
.phead .wrap { position: relative; z-index: 1; }
.phead .en { font-family: var(--font-en); font-weight: 800; letter-spacing: 0.36em; color: var(--accent); font-size: 11px; }
.phead h1 { font-size: clamp(22px, 3.4vw, 32px); font-weight: 900; margin: 8px 0 0; letter-spacing: 0.04em; }

/* ===== works カード ===== */
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 3px solid var(--ink); border-left: 3px solid var(--ink); }
.wk {
  border-right: 3px solid var(--ink); border-bottom: 3px solid var(--ink);
  background: var(--paper); display: flex; flex-direction: column; position: relative;
  transition: background .25s;
}
.wk:hover { background: var(--ink); }
.wk:hover .wk-body h3, .wk:hover .wk-body p { color: var(--paper); }
.wk-thumb { position: relative; aspect-ratio: 16/10; overflow: hidden; cursor: zoom-in; background: var(--ink); }
.wk-thumb img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(100%) contrast(1.05); transition: filter .45s, transform .6s; }
.wk:hover .wk-thumb img { filter: grayscale(0%); transform: scale(1.07); }
.wk-no { position: absolute; top: 0; left: 0; background: var(--accent); color: var(--ink); font-family: var(--font-en); font-weight: 900; font-size: 14px; padding: 4px 10px; z-index: 2; }
.wk-thumb::after { content: "VIEW +"; position: absolute; right: 0; bottom: 0; background: var(--accent-2); color: #fff; font-family: var(--font-en); font-weight: 800; font-size: 12px; letter-spacing: 0.1em; padding: 6px 12px; transform: translateY(100%); transition: transform .3s; }
.wk:hover .wk-thumb::after { transform: translateY(0); }
.wk-body { padding: 22px 22px 26px; display: flex; flex-direction: column; gap: 10px; }
.wk-body h3 { font-size: 18px; font-weight: 900; margin: 0; letter-spacing: 0.04em; transition: color .25s; }
.wk-body h3 .bar { display: inline-block; width: 26px; height: 4px; background: var(--accent-2); vertical-align: middle; margin-right: 10px; }
.wk-body p { font-size: 13px; line-height: 1.85; color: var(--gray); margin: 0; transition: color .25s; }

/* ===== service ===== */
.grid-svc { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0; border-top: 3px solid var(--ink); border-left: 3px solid var(--ink); }
.svc {
  border-right: 3px solid var(--ink); border-bottom: 3px solid var(--ink);
  padding: 30px 30px; background: var(--paper); position: relative; transition: transform .2s, background .25s;
}
.svc:hover { background: var(--ink); color: var(--paper); }
.svc:hover .svc-list li { color: var(--paper); border-color: rgba(244,242,234,0.25); }
.svc-no { font-family: var(--font-en); font-weight: 900; font-size: 30px; color: var(--accent-2); line-height: 1; }
.svc h3 { font-size: 20px; font-weight: 900; margin: 8px 0 16px; letter-spacing: 0.04em; }
.svc-list { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.svc-list li { font-size: 13px; color: var(--gray); border: 1.5px solid rgba(17,20,27,0.25); padding: 3px 10px; transition: color .25s, border-color .25s; }

/* ===== about ===== */
.spec { border-top: 3px solid var(--ink); }
.spec dl { display: grid; grid-template-columns: 220px 1fr; margin: 0; border-bottom: 1px solid rgba(17,20,27,0.18); }
.spec dt, .spec dd { margin: 0; padding: 18px 8px; }
.spec dt { font-weight: 900; letter-spacing: 0.06em; }
.spec dt .en { display: block; font-family: var(--font-en); font-size: 10px; color: var(--accent-2); letter-spacing: 0.18em; font-weight: 800; }
.spec dd.records { line-height: 2.0; color: var(--ink); }
.spec dd.records span { display: block; }

/* ===== access ===== */
.swf-frame-ac { position: relative; width: 100%; max-width: 600px; margin: 0 auto 40px; aspect-ratio: 600 / 500; border: 4px solid var(--ink); background: #fff; overflow: hidden; box-shadow: 12px 12px 0 var(--accent); }
.swf-frame-ac > #v2flash { position: absolute !important; top: 0 !important; left: 0 !important; width: 100% !important; height: 100% !important; }
.info2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border: 3px solid var(--ink); }
.info2 > div { padding: 30px 32px; }
.info2 > div:first-child { border-right: 3px solid var(--ink); }
.info2 h3 { font-size: 20px; font-weight: 900; margin: 0 0 18px; letter-spacing: 0.04em; }
.info2 .lab { font-family: var(--font-en); font-weight: 800; font-size: 11px; letter-spacing: 0.16em; color: var(--accent-2); }
.info2 p { margin: 0 0 10px; }
.routes { list-style: none; margin: 0; padding: 0; }
.routes li { padding: 12px 0; border-top: 1px solid rgba(17,20,27,0.18); position: relative; padding-left: 34px; }
.routes li:first-child { border-top: 0; }
.routes li::before { content: counter(r,decimal-leading-zero); counter-increment: r; position: absolute; left: 0; top: 12px; font-family: var(--font-en); font-weight: 900; color: var(--accent-2); }
.routes { counter-reset: r; }

/* ===== contact form ===== */
.form2 { max-width: 800px; margin: 0 auto; border: 3px solid var(--ink); background: var(--paper); padding: 44px; }
.frow { margin-bottom: 22px; }
.frow label { display: block; font-weight: 900; letter-spacing: 0.04em; margin-bottom: 8px; }
.frow label .en { font-family: var(--font-en); font-size: 10px; color: var(--accent-2); letter-spacing: 0.16em; margin-left: 10px; }
.frow input[type=text], .frow textarea {
  width: 100%; font-family: inherit; font-size: 15px; color: var(--ink);
  padding: 12px 14px; border: 2px solid var(--ink); background: #fff;
}
.frow input:focus, .frow textarea:focus { outline: 3px solid var(--accent); outline-offset: -1px; }
.frow textarea { resize: vertical; min-height: 170px; }
.fnote { text-align: center; margin: 26px 0; color: var(--gray); }
.facts { display: flex; gap: 14px; justify-content: center; }
.btn2 { font-family: inherit; font-weight: 900; font-size: 15px; letter-spacing: 0.14em; padding: 15px 46px; border: 3px solid var(--ink); cursor: pointer; transition: transform .15s, box-shadow .15s, background .2s, color .2s; }
.btn2:hover { transform: translate(-3px,-3px); box-shadow: 6px 6px 0 var(--accent); }
.btn2.primary { background: var(--ink); color: var(--paper); }
.btn2.ghost { background: var(--paper); color: var(--ink); }

/* ===== check list（home） ===== */
.feat { margin-top: 40px; }
.feat h3 { font-size: 22px; font-weight: 900; letter-spacing: 0.04em; margin: 0 0 22px; display: flex; align-items: center; gap: 14px; }
.feat h3 .tag { font-family: var(--font-en); font-size: 12px; background: var(--accent); color: var(--ink); padding: 4px 10px; font-weight: 900; letter-spacing: 0.1em; }
.checks { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2,1fr); gap: 0; border-top: 2px solid currentColor; }
.checks li { padding: 14px 14px 14px 40px; border-bottom: 2px solid rgba(17,20,27,0.15); position: relative; }
.sec.dark .checks li { border-color: rgba(244,242,234,0.18); }
.checks li::before { content: "→"; position: absolute; left: 12px; top: 14px; color: var(--accent-2); font-weight: 900; }
.note2 { border: 3px solid var(--ink); padding: 28px 30px; background: var(--paper); line-height: 2.0; box-shadow: 10px 10px 0 var(--accent); }
.sec.dark .note2 { background: var(--ink-2); border-color: var(--paper); color: var(--paper); }

/* ===== message ===== */
.msg2 { max-width: 720px; margin: 0 auto; text-align: center; border: 3px solid var(--ink); padding: 60px 32px; background: var(--paper); box-shadow: 12px 12px 0 var(--accent); }
.msg2 p { font-size: 18px; }

/* ===== 全幅 動画ヒーロー ===== */
.vhero { width: 100%; background: #000; line-height: 0; }
.vhero-video { width: 100%; height: auto; display: block; }

/* ===== HOME（v1ライク・オリジナル配色＋ギミック） ===== */
.hhero { background: linear-gradient(135deg, var(--navy) 0%, var(--ink-2) 100%); padding: 46px 0 56px; }
.hstage { max-width: 760px; margin: 0 auto; background: #fff; border-radius: 14px; box-shadow: 0 18px 46px rgba(0,0,0,0.32); padding: 10px; }
.hframe { position: relative; width: 100%; aspect-ratio: 740 / 350; overflow: hidden; border-radius: 8px; background: #fff; }
.hframe > #v2flash { position: absolute !important; top: 0 !important; left: 0 !important; width: 100% !important; height: 100% !important; }
.hclaim { text-align: center; color: #fff; max-width: 900px; margin: 28px auto 0; }
.hclaim .eyebrow { font-family: var(--font-en); letter-spacing: 0.4em; color: var(--accent); font-weight: 800; font-size: 12px; }
.hclaim p { font-size: clamp(17px, 2.1vw, 20px); font-weight: 800; line-height: 1.95; margin: 10px 0 0; letter-spacing: 0.03em; }
.hfeat + .hfeat { margin-top: 44px; }
.hfeat h3 { font-size: 19px; font-weight: 900; color: var(--navy); letter-spacing: 0.05em; padding: 14px 18px; background: var(--paper-2); border-left: 5px solid var(--accent); border-radius: 6px; margin: 0 0 22px; }
.hchecks { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px 28px; }
.hchecks li { position: relative; padding-left: 28px; line-height: 1.8; }
.hchecks li::before { content: ""; position: absolute; left: 0; top: 0.55em; width: 14px; height: 14px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px rgba(200,155,60,0.18); }
.htitle { font-size: 22px; font-weight: 900; color: var(--navy); letter-spacing: 0.05em; margin: 0 0 18px; padding-bottom: 12px; position: relative; }
.htitle::after { content: ""; position: absolute; left: 0; bottom: 0; width: 48px; height: 3px; background: var(--accent); }
.hnote { background: var(--paper-2); border: 1px solid #e3e7ee; border-radius: 14px; padding: 24px 28px; line-height: 2.0; }
@media (max-width: 640px) { .hchecks { grid-template-columns: 1fr; } }

/* ===== ライトボックス ===== */
.lb2 { position: fixed; inset: 0; background: rgba(10,12,18,0.94); display: none; align-items: center; justify-content: center; padding: 30px; z-index: 1000; }
.lb2.open { display: flex; }
.lb2 img { max-width: min(920px, 92vw); max-height: 86vh; border: 4px solid var(--paper); }
.lb2-x { position: absolute; top: 22px; right: 26px; width: 50px; height: 50px; border: 3px solid var(--paper); background: transparent; color: var(--paper); font-size: 26px; cursor: pointer; }
.lb2-x:hover { background: var(--accent); color: var(--ink); border-color: var(--accent); }

/* ===== フッター ===== */
.ftr { background: var(--ink); color: var(--paper); padding: 60px 0 40px; }
.ftr-top { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; flex-wrap: wrap; border-bottom: 1px solid rgba(244,242,234,0.2); padding-bottom: 26px; margin-bottom: 22px; }
.ftr-logo { font-family: var(--font-en); font-weight: 900; font-size: 30px; letter-spacing: 0.06em; }
.ftr-logo i { color: var(--accent); font-style: normal; }
.ftr .totop { font-family: var(--font-en); font-weight: 800; letter-spacing: 0.1em; border: 2px solid var(--paper); padding: 10px 22px; color: var(--paper); }
.ftr .totop:hover { background: var(--accent); color: var(--ink); border-color: var(--accent); }
.ftr-tag { color: var(--accent); letter-spacing: 0.3em; font-family: var(--font-en); font-weight: 800; font-size: 13px; }
.ftr-adr { font-size: 12px; color: rgba(244,242,234,0.65); margin: 8px 0 0; line-height: 1.9; }

/* ===== スクロールリビール（ギミック） ===== */
[data-reveal] { opacity: 0; transform: translateY(28px); transition: opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1); }
[data-reveal].in { opacity: 1; transform: none; }
[data-reveal][data-delay="1"] { transition-delay: .08s; }
[data-reveal][data-delay="2"] { transition-delay: .16s; }
[data-reveal][data-delay="3"] { transition-delay: .24s; }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  .marquee__track { animation: none; }
}

/* ===== レスポンシブ ===== */
@media (max-width: 900px) {
  .grid3 { grid-template-columns: repeat(2, 1fr); }
  .info2 { grid-template-columns: 1fr; }
  .info2 > div:first-child { border-right: 0; border-bottom: 3px solid var(--ink); }
  .spec dl { grid-template-columns: 150px 1fr; }
}
@media (max-width: 640px) {
  body { font-size: 14.5px; }
  .hdr-inner { gap: 12px; }
  .brand img { width: 168px; }
  .burger { display: block; }
  .gnav { position: absolute; left: 0; right: 0; top: 100%; background: var(--paper); border-bottom: 3px solid var(--ink); display: none; }
  .gnav.open { display: block; }
  .gnav ul { flex-direction: column; gap: 0; }
  .gnav li { border-top: 2px solid var(--ink); }
  .gnav a { padding: 16px 28px; display: flex; align-items: baseline; gap: 12px; }
  .gnav a::after { display: none; }
  .gnav .jp { display: inline; color: var(--gray); font-family: var(--font-jp); font-weight: 700; letter-spacing: 0.04em; }
  .grid3 { grid-template-columns: 1fr; }
  .grid-svc { grid-template-columns: 1fr; }
  .checks { grid-template-columns: 1fr; }
  .spec dl { grid-template-columns: 1fr; }
  .spec dt { padding-bottom: 0; }
  .form2 { padding: 26px 18px; }
  .facts { flex-direction: column; }
  .btn2 { width: 100%; }
  .sec { padding: 56px 0; }
}