/* ============================================================
   山内 拓哉 公式サイト
   方針（2026-08-13 デザイン再考）: 映像を主役に振り切る。
   - 全編ダーク。明るい面を作らない（映像が一番きれいに見える地の色）
   - 色は「黒 × 白 × 金」の3色だけ。青は廃止（色数を減らすほど映像が立つ）
   - 見出しは明朝。日本の映像タイトルの標準で、ゴシック一色のB2Bサイト群と分かれる
   - 本文はゴシック（システム）。可読性は落とさない
   ============================================================ */

:root{
  --bg:      #06070a;
  --bg-2:    #0c0e13;
  --bg-3:    #14171e;
  --line:    rgba(255,255,255,.10);
  --line-2:  rgba(255,255,255,.20);
  --fg:      #ffffff;
  --fg-2:    #b9c1cd;
  --fg-3:    #7c8697;
  --gold:    #c9a227;
  --gold-hi: #e3bd52;

  --wrap: 1200px;
  --r: 4px;
  --shadow: 0 30px 80px rgba(0,0,0,.55);

  --sans: "Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic Medium","Yu Gothic","Noto Sans JP","Helvetica Neue",Arial,sans-serif;
  --mincho: "Shippori Mincho B1","Hiragino Mincho ProN","Yu Mincho","YuMincho",serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:72px;-webkit-text-size-adjust:100%;background:var(--bg);}
body{
  margin:0;font-family:var(--sans);background:var(--bg);color:var(--fg);
  line-height:1.9;font-size:16px;letter-spacing:.03em;-webkit-font-smoothing:antialiased;
}
img,video{max-width:100%;display:block;}
a{color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.45;}

.wrap{width:min(100% - 44px, var(--wrap));margin-inline:auto;}
.wrap-narrow{width:min(100% - 44px, 800px);margin-inline:auto;}

section{padding:120px 0;position:relative;}
section.tight{padding:88px 0;}

/* 面の切り替えは色ではなく、細い線と微妙な明度差だけでやる */
.band{background:var(--bg-2);}
.band-3{background:var(--bg-3);}
.hr-top{border-top:1px solid var(--line);}

/* ---------- 共通パーツ ---------- */

.eyebrow{
  display:block;font-size:.7rem;font-weight:700;letter-spacing:.28em;
  color:var(--gold);margin:0 0 22px;
}
.h2{
  font-family:var(--mincho);font-weight:800;
  font-size:clamp(1.7rem,1.1rem + 2.4vw,2.85rem);
  line-height:1.45;letter-spacing:.04em;
}
.h3{font-size:1.05rem;letter-spacing:.05em;}
.lead{color:var(--fg-2);margin:24px 0 0;max-width:60ch;font-size:.97rem;line-height:2;}
.sec-head{margin-bottom:56px;}
.note{font-size:.82rem;color:var(--fg-3);line-height:1.85;}
strong{color:var(--fg);font-weight:700;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:12px;
  padding:17px 38px;font-weight:700;font-size:.95rem;letter-spacing:.08em;
  text-decoration:none;border:1px solid transparent;border-radius:2px;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-gold{background:var(--gold);color:#0a0805;}
.btn-gold:hover{background:var(--gold-hi);}
.btn-ghost{border-color:var(--line-2);color:var(--fg);}
.btn-ghost:hover{background:rgba(255,255,255,.08);border-color:var(--fg);}
.btn-ink{background:var(--fg);color:var(--bg);}
.btn-ink:hover{background:var(--gold);color:#0a0805;}

/* ---------- ヘッダー ---------- */

.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,7,10,.72);backdrop-filter:saturate(140%) blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header .wrap{display:flex;align-items:center;gap:30px;height:66px;}
.brand{text-decoration:none;font-family:var(--mincho);font-weight:800;font-size:1.05rem;letter-spacing:.14em;}
.brand small{
  display:block;font-family:var(--sans);font-size:.56rem;letter-spacing:.3em;
  color:var(--fg-3);font-weight:600;margin-top:2px;
}
.nav{display:flex;gap:26px;margin-left:auto;}
.nav a{text-decoration:none;font-size:.8rem;color:var(--fg-2);font-weight:600;letter-spacing:.08em;}
.nav a:hover{color:var(--gold-hi);}
.header-cta{padding:11px 22px;font-size:.78rem;}

/* ---------- ヒーロー：映像の壁 ---------- */

.hero{
  position:relative;min-height:100svh;display:flex;align-items:center;
  padding:120px 0 88px;overflow:hidden;isolation:isolate;
}
.wall{
  position:absolute;inset:-6% 0;z-index:-2;
  display:grid;grid-template-columns:repeat(6,1fr);
}
.wall-item{position:relative;overflow:hidden;}
/* 背景は「空気」。中のテロップが読めると騒がしいので、軽くぼかして落とす。
   くっきり見せるのはサンプルの節（そこが証拠の置き場） */
.wall-item video{
  width:100%;height:100%;object-fit:cover;
  filter:blur(1.4px) saturate(.88) brightness(.9);
}
.wall-item:nth-child(odd) video{animation:drift 26s ease-in-out infinite alternate;}
.wall-item:nth-child(even) video{animation:drift 32s ease-in-out infinite alternate-reverse;}
@keyframes drift{from{transform:translateY(-2.5%) scale(1.04);}to{transform:translateY(2.5%) scale(1.04);}}

/* 文字を読ませるための覆い。左に寄せるほど濃くする */
.hero::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:
    linear-gradient(90deg, rgba(6,7,10,.97) 0%, rgba(6,7,10,.93) 34%, rgba(6,7,10,.5) 62%, rgba(6,7,10,.62) 100%),
    linear-gradient(180deg, rgba(6,7,10,.9) 0%, rgba(6,7,10,.28) 20%, rgba(6,7,10,.32) 58%, rgba(6,7,10,.86) 80%, rgba(6,7,10,.99) 100%);
}

.hero-inner{max-width:720px;}
.hero h1{
  font-family:var(--mincho);font-weight:800;
  font-size:clamp(2.6rem,1.5rem + 5.2vw,5.2rem);
  line-height:1.24;letter-spacing:.06em;
  text-shadow:0 2px 40px rgba(0,0,0,.6);
}
.hero h1 .accent{color:var(--gold-hi);}
.hero-sub{
  color:var(--fg-2);margin:32px 0 0;font-size:1rem;line-height:2.1;max-width:36ch;
  text-shadow:0 1px 20px rgba(0,0,0,.7);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:44px;}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:12px 44px;margin-top:52px;padding-top:26px;
  border-top:1px solid var(--line);font-size:.78rem;color:var(--fg-3);letter-spacing:.06em;
}
.hero-meta b{display:block;color:var(--fg);font-size:1.15rem;font-weight:700;letter-spacing:.02em;margin-bottom:2px;}

.scroll-hint{
  position:absolute;bottom:34px;left:50%;transform:translateX(-50%);
  font-size:.64rem;letter-spacing:.34em;color:var(--fg-3);z-index:1;
}
.scroll-hint::after{
  content:"";display:block;width:1px;height:34px;margin:12px auto 0;
  background:linear-gradient(var(--gold),transparent);
}

/* ---------- 悩み ---------- */

.problems{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);}
.problem{background:var(--bg);padding:26px 28px;font-size:.94rem;color:var(--fg-2);position:relative;padding-left:56px;}
.problem::before{
  content:"";position:absolute;left:28px;top:33px;
  width:12px;height:1px;background:var(--gold);
}
.solution-note{margin-top:34px;padding:30px 34px;border-left:2px solid var(--gold);background:var(--bg-2);}
.solution-note p{margin:0;font-size:1rem;line-height:2;color:var(--fg-2);}

/* ---------- サンプル ---------- */

.modes{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin-top:8px;}
.mode{background:var(--bg);padding:34px 30px;}
.mode h3{font-family:var(--mincho);font-size:1.4rem;letter-spacing:.05em;margin-bottom:6px;font-weight:800;}
.mode .tagline{color:var(--gold-hi);font-size:.9rem;font-weight:700;margin-bottom:18px;letter-spacing:.04em;}
.mode p{margin:0;font-size:.9rem;color:var(--fg-2);line-height:1.95;}

.sample-group{margin-top:76px;}
.sample-group .h3{font-family:var(--mincho);font-size:1.35rem;font-weight:800;letter-spacing:.06em;margin-bottom:8px;}
.sample-group .note{margin:0 0 26px;max-width:64ch;}

.samples{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.sample{position:relative;overflow:hidden;background:#000;border:1px solid var(--line);}
.sample video{width:100%;aspect-ratio:9/16;object-fit:cover;background:#000;display:block;}
.sample-label{
  position:absolute;top:0;left:0;z-index:3;pointer-events:none;
  background:linear-gradient(180deg,rgba(0,0,0,.75),transparent);
  color:#fff;font-size:.72rem;font-weight:700;letter-spacing:.1em;
  padding:14px 16px 26px;width:100%;
}
.sound-btn{
  position:absolute;right:12px;bottom:12px;z-index:4;
  width:44px;height:44px;border-radius:50%;border:1px solid var(--line-2);
  background:rgba(6,7,10,.7);backdrop-filter:blur(8px);color:#fff;
  cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:background-color .2s ease,border-color .2s ease;
}
.sound-btn:hover{background:rgba(201,162,39,.85);border-color:var(--gold);color:#0a0805;}
.sound-btn svg{width:20px;height:20px;fill:currentColor;}
.sound-btn .on{display:none;}
.sample.is-loud .sound-btn .on{display:block;}
.sample.is-loud .sound-btn .off{display:none;}
.sample.is-loud .sound-btn{background:var(--gold);border-color:var(--gold);color:#0a0805;}

.disclosure{margin-top:44px;border-left:2px solid var(--gold);padding:6px 0 6px 22px;color:var(--fg-2);font-size:.92rem;line-height:2;}

.offer-box{
  margin-top:64px;text-align:center;border:1px solid var(--line-2);
  padding:52px 40px;background:var(--bg-2);
}
.offer-box h3{font-family:var(--mincho);font-size:1.5rem;font-weight:800;letter-spacing:.05em;margin-bottom:14px;}
.offer-box p{color:var(--fg-2);font-size:.95rem;margin:0 0 30px;}

/* ---------- 制作実績 ---------- */

.works-head{display:flex;align-items:baseline;gap:16px;margin:52px 0 20px;flex-wrap:wrap;}
.works-head h3{font-size:.95rem;letter-spacing:.12em;}
.works-head span{font-size:.78rem;color:var(--fg-3);}
.works{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.work{text-decoration:none;display:block;}
.work-thumb{position:relative;overflow:hidden;background:var(--bg-3);border:1px solid var(--line);aspect-ratio:16/9;}
.works.vertical .work-thumb{aspect-ratio:9/16;}
.work-thumb img{width:100%;height:100%;object-fit:cover;opacity:.86;transition:opacity .25s ease,transform .5s ease;}
.work:hover .work-thumb img{opacity:1;transform:scale(1.04);}
.work:hover .work-thumb{border-color:var(--gold);}
.work-thumb::after{
  content:"";position:absolute;inset:0;margin:auto;width:50px;height:50px;border-radius:50%;
  background:rgba(6,7,10,.7) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M8 5v14l11-7z'/%3E%3C/svg%3E") 55% 50%/20px no-repeat;
  border:1px solid rgba(255,255,255,.35);
}
.work-role{margin-top:12px;font-size:.76rem;color:var(--fg-3);letter-spacing:.04em;}

/* ---------- お客様の声 ---------- */

.voices{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);}
.voice{background:var(--bg);padding:32px 30px;margin:0;}
.voice .who{font-family:var(--mincho);font-size:1.05rem;font-weight:800;letter-spacing:.06em;margin:0 0 12px;}
.voice p{margin:0;font-size:.9rem;color:var(--fg-2);line-height:1.95;}
.voice details{margin-top:14px;}
.voice summary{cursor:pointer;list-style:none;font-size:.78rem;font-weight:700;color:var(--gold-hi);letter-spacing:.08em;display:inline-block;}
.voice summary::-webkit-details-marker{display:none;}
.voice summary::after{content:" ＋";}
.voice details[open] summary::after{content:" －";}
.voice details p{margin-top:14px;font-size:.85rem;color:var(--fg-2);border-left:1px solid var(--line-2);padding-left:16px;}

/* ---------- 料金 ---------- */

.price-tabs{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.price-block{border:1px solid var(--line);background:var(--bg-2);}
.price-block>header{padding:26px 28px;border-bottom:1px solid var(--line);min-height:140px;display:flex;flex-direction:column;justify-content:center;}
.price-block>header h3{font-family:var(--mincho);font-size:1.3rem;font-weight:800;letter-spacing:.06em;}
.price-block>header p{margin:8px 0 0;font-size:.76rem;color:var(--fg-3);line-height:1.8;}
.plan{display:grid;grid-template-columns:1fr auto;gap:6px 18px;padding:24px 28px;border-bottom:1px solid var(--line);align-items:baseline;}
.plan:last-child{border-bottom:0;}
.plan.is-best{background:rgba(201,162,39,.07);}
.plan-name{font-weight:700;font-size:.98rem;letter-spacing:.04em;}
.plan-badge{
  font-size:.62rem;font-weight:700;color:#0a0805;background:var(--gold);
  border-radius:2px;padding:3px 9px;margin-left:10px;vertical-align:2px;letter-spacing:.1em;
}
.plan-price{font-weight:700;font-size:1.34rem;white-space:nowrap;letter-spacing:0;}
.plan-price small{font-size:.68rem;font-weight:600;color:var(--fg-3);margin-left:4px;}
.plan-desc{grid-column:1/-1;font-size:.82rem;color:var(--fg-3);margin:0;line-height:1.8;}

.single{margin-top:20px;border:1px solid var(--line);background:var(--bg-2);padding:34px 32px;}
.single .h3{font-family:var(--mincho);font-size:1.3rem;font-weight:800;letter-spacing:.06em;margin-bottom:6px;}
.single table{width:100%;border-collapse:collapse;font-size:.92rem;}
.single th,.single td{text-align:left;padding:18px 2px;border-bottom:1px solid var(--line);vertical-align:top;}
.single tr:last-child th,.single tr:last-child td{border-bottom:0;}
.single th{font-weight:700;width:62%;letter-spacing:.03em;}
.single td{text-align:right;white-space:nowrap;font-weight:700;}
.single .sub{display:block;font-weight:400;font-size:.76rem;color:var(--fg-3);margin-top:5px;line-height:1.8;}

/* ---------- 流れ ---------- */

.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);counter-reset:s;}
.step{background:var(--bg);padding:32px 26px;}
.step::before{
  counter-increment:s;content:"0" counter(s);
  display:block;font-size:.8rem;font-weight:700;color:var(--gold);letter-spacing:.2em;margin-bottom:16px;
}
.step h3{font-size:1rem;margin-bottom:10px;letter-spacing:.05em;}
.step p{margin:0;font-size:.85rem;color:var(--fg-3);line-height:1.9;}

/* ---------- AI内製化 ---------- */

.ai-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.ai-card{border:1px solid var(--line);padding:36px 32px;background:var(--bg-2);}
.ai-card h3{font-family:var(--mincho);font-size:1.4rem;font-weight:800;letter-spacing:.06em;margin-bottom:12px;}
.ai-price{font-size:1.02rem;font-weight:700;margin:20px 0 20px;padding:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.ai-price span{display:block;font-size:.78rem;color:var(--fg-3);font-weight:400;margin-top:6px;line-height:1.8;}
.ticks{list-style:none;margin:0;padding:0;font-size:.88rem;}
.ticks li{padding-left:22px;position:relative;margin-bottom:12px;color:var(--fg-2);line-height:1.9;}
.ticks li::before{content:"";position:absolute;left:0;top:.85em;width:8px;height:1px;background:var(--gold);}
.scope{margin-top:24px;border:1px solid var(--line);padding:30px 32px;}
.scope h4{font-size:.95rem;margin-bottom:12px;letter-spacing:.05em;}
.scope p{margin:0;font-size:.85rem;color:var(--fg-3);line-height:2;}

/* ---------- 運営者 ---------- */

.owner{display:grid;grid-template-columns:300px 1fr;gap:56px;align-items:start;}
.owner-photo{overflow:hidden;border:1px solid var(--line);background:var(--bg-3);}
.owner-photo img{filter:grayscale(1) contrast(1.05);transition:filter .5s ease;}
.owner-photo:hover img{filter:grayscale(0);}
.owner h2{font-family:var(--mincho);font-size:2rem;font-weight:800;letter-spacing:.1em;}
.owner .ruby{display:block;font-family:var(--sans);font-size:.72rem;color:var(--fg-3);font-weight:600;letter-spacing:.24em;margin-bottom:10px;}
.owner-role{color:var(--gold);font-weight:700;font-size:.82rem;letter-spacing:.14em;margin:12px 0 26px;}
.owner p{font-size:.95rem;color:var(--fg-2);line-height:2.05;margin:0 0 20px;}
.career{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px;padding:0;list-style:none;}
.career li{font-size:.74rem;border:1px solid var(--line);padding:6px 14px;color:var(--fg-3);letter-spacing:.06em;}

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

.faq details{border-bottom:1px solid var(--line);}
.faq summary{cursor:pointer;list-style:none;padding:26px 44px 26px 0;font-weight:700;font-size:.98rem;position:relative;letter-spacing:.04em;}
.faq summary::-webkit-details-marker{display:none;}
.faq summary:hover{color:var(--gold-hi);}
.faq summary::after{
  content:"";position:absolute;right:8px;top:50%;width:11px;height:1px;background:var(--gold);
}
.faq summary::before{
  content:"";position:absolute;right:13px;top:50%;width:1px;height:11px;margin-top:-5px;background:var(--gold);
  transition:opacity .2s ease;
}
.faq details[open] summary::before{opacity:0;}
.faq .answer{padding:0 0 28px;color:var(--fg-2);font-size:.92rem;margin:0;line-height:2.05;}

/* ---------- CTA ---------- */

.cta{text-align:center;position:relative;overflow:hidden;}
.cta::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:radial-gradient(900px 420px at 50% 0%, rgba(201,162,39,.14), transparent 68%);
}
.cta h2{font-family:var(--mincho);font-weight:800;font-size:clamp(1.7rem,1.1rem + 2.4vw,2.7rem);letter-spacing:.06em;line-height:1.5;}
.cta .lead{margin-inline:auto;}
.cta-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:14px;margin-top:44px;}
.cta-points{display:flex;justify-content:center;flex-wrap:wrap;gap:10px 30px;margin-top:34px;font-size:.78rem;color:var(--fg-3);letter-spacing:.06em;}

/* ---------- フッター ---------- */

.site-footer{border-top:1px solid var(--line);padding:44px 0 40px;font-size:.8rem;color:var(--fg-3);}
.site-footer .wrap{display:flex;flex-wrap:wrap;gap:20px 40px;align-items:center;}
.site-footer a{color:var(--fg-2);text-decoration:none;}
.site-footer a:hover{color:var(--gold-hi);}
.site-footer .copy{margin-left:auto;font-size:.72rem;letter-spacing:.1em;}

/* ============================================================
   広告用LP専用
   ============================================================ */

.lp-bar{
  background:var(--bg-2);padding:13px 0;font-size:.76rem;letter-spacing:.12em;
  text-align:center;color:var(--fg-2);border-bottom:1px solid var(--line);
}
.form-embed{background:#fff;overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line-2);}
.form-embed iframe{width:100%;height:1500px;border:0;display:block;}

.compare{width:100%;border-collapse:collapse;font-size:.9rem;}
.compare th,.compare td{padding:18px 20px;border:1px solid var(--line);text-align:left;color:var(--fg-2);}
.compare thead th{background:var(--bg-2);font-size:.8rem;letter-spacing:.08em;color:var(--fg-3);}
.compare tbody th{font-weight:700;width:26%;color:var(--fg);}
.compare .ours{background:rgba(201,162,39,.08);color:var(--fg);font-weight:700;}
.compare thead .ours{background:var(--gold);color:#0a0805;}

.sticky-cta{display:none;}

/* ---------- レスポンシブ ---------- */

@media (max-width:1000px){
  section{padding:88px 0;}
  .wall{grid-template-columns:repeat(3,1fr);}
  .hero{min-height:auto;padding:104px 0 80px;}
  .hero::before{
    background:
      linear-gradient(180deg, rgba(6,7,10,.9) 0%, rgba(6,7,10,.72) 30%, rgba(6,7,10,.9) 70%, rgba(6,7,10,.98) 100%),
      linear-gradient(90deg, rgba(6,7,10,.86), rgba(6,7,10,.7));
  }
  .modes,.ai-grid,.price-tabs,.voices,.problems{grid-template-columns:1fr;}
  .samples{grid-template-columns:repeat(3,1fr);gap:12px;}
  .works{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .owner{grid-template-columns:1fr;gap:32px;}
  .owner-photo{max-width:240px;}
  .nav{display:none;}
  .scroll-hint{display:none;}
}

@media (max-width:640px){
  body{font-size:15.5px;}
  section{padding:72px 0;}
  .wall{grid-template-columns:repeat(2,1fr);}
  .samples{grid-template-columns:1fr 1fr;gap:10px;}
  .works{grid-template-columns:1fr 1fr;gap:10px;}
  .steps{grid-template-columns:1fr;}
  .hero-actions .btn,.cta-actions .btn,.offer-box .btn{width:100%;}
  .hero-actions,.cta-actions{flex-direction:column;}
  .brand small{display:none;}
  .single th{width:58%;}
  .compare,.compare thead,.compare tbody,.compare th,.compare td,.compare tr{display:block;}
  .compare thead{display:none;}
  .compare td{border-top:0;}
  .compare tbody th{width:auto;border-bottom:0;background:var(--bg-2);}
  .sound-btn{width:38px;height:38px;right:8px;bottom:8px;}
  .sound-btn svg{width:16px;height:16px;}

  .is-lp .sticky-cta{
    display:block;position:fixed;left:0;right:0;bottom:0;z-index:80;
    padding:12px 16px calc(12px + env(safe-area-inset-bottom));
    background:rgba(6,7,10,.94);backdrop-filter:blur(12px);border-top:1px solid var(--line);
    transition:transform .25s ease;
  }
  .is-lp .sticky-cta .btn{width:100%;}
  .is-lp .sticky-cta.is-hidden{transform:translateY(130%);}
  .is-lp .site-footer{padding-bottom:100px;}
  .form-embed iframe{height:1750px;}
}

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