:root{
  --ink: #1b1f2a;
  --ink-soft: #3a3f4d;
  --paper: #faf6ee;
  --paper-deep: #f2ead9;
  --indigo: #1f3350;
  --indigo-deep: #14233a;
  --vermillion: #c0442c;
  --vermillion-soft: #e08a6b;
  --gold: #b68a3b;
  --line: #e3d9c4;
  --white: #ffffff;
  --radius: 14px;
  --shadow: 0 14px 40px rgba(20,35,58,.12);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"Noto Sans JP",sans-serif;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{font-family:"Noto Serif JP",serif; color:var(--indigo-deep); margin:0 0 .5em; overflow-wrap:break-word;}
p{margin:0 0 1em; overflow-wrap:break-word;}
a{color:inherit;text-decoration:none;}
ul{padding:0;margin:0;list-style:none;}
img{max-width:100%;display:block;}

.section{padding:88px 24px;}
.section-inner{max-width:1120px;margin:0 auto;}
.section-lead{max-width:680px;color:var(--ink-soft);font-size:1.02rem;}
.eyebrow{
  display:inline-block;
  font-size:.75rem;
  letter-spacing:.14em;
  color:var(--vermillion);
  font-weight:700;
  margin-bottom:10px;
}
.accent{color:var(--vermillion);}

/* buttons */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 26px;border-radius:999px;
  font-weight:700;font-size:.95rem;
  border:1px solid transparent;cursor:pointer;
  transition:transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.btn i{width:18px;height:18px;}
.btn-primary{background:var(--vermillion);color:#fff;box-shadow:0 10px 24px rgba(192,68,44,.3);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(192,68,44,.4);}
.btn-ghost{background:transparent;color:var(--indigo-deep);border-color:var(--indigo-deep);}
.btn-ghost:hover{background:var(--indigo-deep);color:#fff;}
.btn-small{padding:10px 20px;font-size:.85rem;}

/* header */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(250,246,238,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  max-width:1200px;margin:0 auto;padding:14px 24px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.brand{display:flex;align-items:center;gap:10px;}
.brand-mark{
  width:38px;height:38px;border-radius:8px;
  background:var(--indigo-deep);color:var(--gold);
  display:flex;align-items:center;justify-content:center;
  font-family:"Noto Serif JP",serif;font-weight:900;font-size:1.1rem;
}
.brand-mark.small{width:30px;height:30px;font-size:.9rem;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{font-family:"Noto Serif JP",serif;font-weight:700;font-size:1.05rem;color:var(--indigo-deep);}
.brand-name em{color:var(--vermillion);font-style:normal;letter-spacing:.03em;}
.brand-name.small{font-size:.95rem;}
.brand-sub{font-size:.7rem;color:var(--ink-soft);}
.main-nav{display:flex;gap:26px;flex:1;justify-content:center;}
.main-nav a{font-size:.88rem;font-weight:500;color:var(--ink-soft);}
.main-nav a:hover{color:var(--vermillion);}

/* hero */
.hero{position:relative;min-height:92vh;display:flex;align-items:flex-end;overflow:hidden;}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.hero-overlay{
  position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(20,35,58,.55) 0%, rgba(20,35,58,.65) 40%, rgba(15,20,28,.92) 100%);
}
.hero-content{position:relative;z-index:2;max-width:860px;margin:0 auto;padding:60px 24px 70px;color:#fff;text-align:left;}
.hero-badges{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:22px;}
.badge{
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.3);
  padding:6px 14px;border-radius:999px;font-size:.75rem;letter-spacing:.03em;
}
.badge-gold{background:rgba(182,138,59,.25);border-color:var(--gold);color:#f3dfae;}
.hero h1{color:#fff;font-size:clamp(2rem,4.4vw,3.3rem);line-height:1.4;margin-bottom:22px;}
.hero-lead{color:rgba(255,255,255,.88);font-size:1.05rem;max-width:620px;margin-bottom:30px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:44px;}
.hero-actions .btn-ghost{color:#fff;border-color:rgba(255,255,255,.5);}
.hero-actions .btn-ghost:hover{background:#fff;color:var(--indigo-deep);}
.hero-stats{display:flex;gap:40px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.25);padding-top:22px;}
.hero-stats div{display:flex;flex-direction:column;}
.hero-stats strong{font-family:"Noto Serif JP",serif;font-size:1.5rem;color:var(--gold);}
.hero-stats span{font-size:.78rem;color:rgba(255,255,255,.75);}

/* cards */
.card-grid{display:grid;gap:24px;margin-top:40px;}
.card-grid.three{grid-template-columns:repeat(3,1fr);}
.info-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 26px;box-shadow:var(--shadow);
}
.info-icon{
  width:46px;height:46px;border-radius:10px;background:var(--paper-deep);
  display:flex;align-items:center;justify-content:center;color:var(--vermillion);margin-bottom:16px;
}
.info-icon i{width:22px;height:22px;}
.info-card h3{font-size:1.05rem;}
.info-card p{color:var(--ink-soft);font-size:.92rem;margin:0;}

/* flow */
.flow-section{background:var(--indigo-deep);color:#fff;}
.flow-section .eyebrow{color:var(--gold);}
.flow-section h2{color:#fff;}
.flow-section .section-lead{color:rgba(255,255,255,.72);}
.flow-steps{display:flex;align-items:stretch;gap:10px;margin-top:44px;flex-wrap:wrap;justify-content:center;}
.flow-step{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius);padding:24px 18px;width:180px;text-align:center;position:relative;
}
.flow-icon{
  width:46px;height:46px;border-radius:50%;background:var(--vermillion);
  display:flex;align-items:center;justify-content:center;margin:0 auto 14px;color:#fff;
}
.flow-icon i{width:22px;height:22px;}
.flow-no{position:absolute;top:10px;right:14px;font-family:"Noto Serif JP",serif;color:var(--gold);font-size:.75rem;}
.flow-step h3{color:#fff;font-size:.95rem;margin-bottom:6px;}
.flow-step p{color:rgba(255,255,255,.65);font-size:.8rem;margin:0;}
.flow-arrow{display:flex;align-items:center;color:var(--gold);opacity:.7;}
.flow-arrow i{width:20px;height:20px;}

/* demo */
.demo-section{background:var(--paper-deep);}
.demo-panel{
  margin-top:40px;background:var(--white);border:1px solid var(--line);
  border-radius:20px;box-shadow:var(--shadow);padding:34px;max-width:100%;
}
.demo-select-row{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin-bottom:30px;}
.demo-select-row label{font-weight:700;font-size:.88rem;color:var(--ink-soft);width:100%;}
#exampleSelect{
  flex:1 1 260px;min-width:0;max-width:100%;padding:12px 16px;border-radius:10px;border:1px solid var(--line);
  font-size:.92rem;background:var(--paper);color:var(--ink);
}
.pipeline-visual{display:flex;flex-direction:column;gap:22px;}
.pipeline-label{display:flex;align-items:center;gap:8px;font-weight:700;color:var(--indigo-deep);font-size:.9rem;margin-bottom:10px;}
.pipeline-label i{width:17px;height:17px;color:var(--vermillion);}
.pipeline-box{
  background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:20px 22px;
  min-height:28px;opacity:0;transform:translateY(6px);transition:opacity .45s ease, transform .45s ease;
}
.pipeline-box.show{opacity:1;transform:translateY(0);}
.jp-text{font-family:"Noto Serif JP",serif;font-size:1.08rem;color:var(--ink);min-height:1.8em;}
.rag-box{border-color:var(--gold);background:#fdf6e6;}
.rag-term{display:inline-block;font-weight:700;color:var(--vermillion);background:#fbe4dc;padding:3px 10px;border-radius:6px;font-size:.85rem;margin-bottom:8px;}
.rag-snippet{margin:0;font-size:.86rem;color:var(--ink-soft);}
.translation-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.translation-card{
  border:1px solid var(--line);border-radius:14px;padding:18px;background:var(--paper);
  opacity:0;transform:translateY(10px);transition:opacity .45s ease, transform .45s ease;
}
.translation-card.show{opacity:1;transform:translateY(0);}
.lang-tag{font-weight:700;font-size:.82rem;margin-bottom:12px;color:var(--indigo-deep);}
.t-row{margin-bottom:10px;}
.t-label{display:block;font-size:.72rem;font-weight:700;letter-spacing:.03em;color:var(--ink-soft);margin-bottom:4px;}
.t-direct p{font-size:.84rem;color:#8a8275;margin:0;}
.t-yuiyaku{background:#fff;border:1px solid var(--vermillion-soft);border-radius:10px;padding:12px;}
.t-yuiyaku .t-label{color:var(--vermillion);}
.t-yuiyaku p{font-size:.88rem;color:var(--ink);margin:0 0 10px;}
.play-btn{
  display:inline-flex;align-items:center;gap:6px;background:var(--indigo-deep);color:#fff;
  border:none;border-radius:999px;padding:7px 14px;font-size:.78rem;font-weight:700;cursor:pointer;
}
.play-btn i{width:14px;height:14px;}
.play-btn:hover{background:var(--vermillion);}
.demo-disclaimer{margin-top:26px;font-size:.78rem;color:#9a9284;border-top:1px dashed var(--line);padding-top:16px;}

/* phone */
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center;}
.split-text{min-width:0;}
.split-visual{min-width:0;}
.feature-list{margin-top:20px;}
.feature-list li{display:flex;gap:10px;align-items:flex-start;margin-bottom:12px;font-size:.92rem;color:var(--ink-soft);}
.feature-list i{width:18px;height:18px;color:var(--vermillion);flex-shrink:0;margin-top:2px;}
.hint-text{font-size:.82rem;color:#9a9284;margin-top:18px;}
.split-visual{display:flex;justify-content:center;}
.phone-frame{
  width:300px;border-radius:40px;background:var(--indigo-deep);padding:14px;box-shadow:var(--shadow);
  position:relative;
}
.phone-notch{width:90px;height:18px;background:var(--indigo-deep);border-radius:0 0 14px 14px;position:absolute;top:0;left:50%;transform:translateX(-50%);z-index:2;}
.phone-screen{background:#0f1622;border-radius:28px;padding:26px 18px 20px;min-height:460px;display:flex;flex-direction:column;}
.phone-topbar{display:flex;align-items:center;gap:6px;color:#9fb0c6;font-size:.68rem;letter-spacing:.04em;margin-bottom:16px;}
.live-dot{width:7px;height:7px;border-radius:50%;background:var(--vermillion);display:inline-block;animation:pulse 1.4s infinite;}
@keyframes pulse{0%,100%{opacity:1;}50%{opacity:.3;}}
.phone-lang-tabs{display:flex;gap:8px;margin-bottom:20px;}
.lang-tab{
  flex:1;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);color:#cfd8e3;
  padding:8px 0;border-radius:8px;font-size:.78rem;font-weight:700;cursor:pointer;
}
.lang-tab.active{background:var(--vermillion);color:#fff;border-color:var(--vermillion);}
.phone-caption{
  flex:1;color:#e9edf3;font-size:.95rem;line-height:1.7;
  font-family:"Noto Serif JP",serif;overflow-y:auto;padding-right:4px;
}
.phone-controls{display:flex;align-items:center;gap:12px;margin-top:16px;}
.phone-play{
  width:40px;height:40px;border-radius:50%;background:var(--vermillion);border:none;color:#fff;
  display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0;
}
.phone-play i{width:18px;height:18px;}
.phone-waveform{flex:1;display:flex;align-items:center;gap:3px;height:22px;}
.phone-waveform span{flex:1;background:#3b4a63;height:40%;border-radius:2px;}
.phone-waveform.active span{background:var(--gold);animation:wave 1s infinite ease-in-out;}
.phone-waveform span:nth-child(odd){animation-delay:.15s;}
@keyframes wave{0%,100%{height:30%;}50%{height:90%;}}
.phone-vol{width:16px;height:16px;color:#9fb0c6;}

/* usecase */
.usecase-grid .usecase-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);
}
.usecase-card img{height:190px;object-fit:cover;}
.usecase-body{padding:20px 22px;}
.usecase-body h3{font-size:1rem;}
.usecase-body p{font-size:.86rem;color:var(--ink-soft);margin:0;}

/* modules */
.module-table{margin-top:36px;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--white);box-shadow:var(--shadow);}
.module-row{display:grid;grid-template-columns:60px 220px 1fr;gap:18px;padding:18px 24px;border-bottom:1px solid var(--line);align-items:center;}
.module-row:last-child{border-bottom:none;}
.module-head{background:var(--indigo-deep);color:#fff;font-weight:700;font-size:.85rem;}
.module-row span:first-child{font-family:"Noto Serif JP",serif;color:var(--vermillion);font-weight:700;}
.module-head span:first-child{color:var(--gold);}
.module-row span:nth-child(2){font-weight:700;font-size:.92rem;}
.module-row span:nth-child(3){font-size:.86rem;color:var(--ink-soft);}
.module-note{
  display:flex;gap:10px;align-items:flex-start;margin-top:22px;font-size:.84rem;color:var(--ink-soft);
  background:#fdf6e6;border:1px solid var(--gold);border-radius:10px;padding:16px 18px;
}
.module-note i{width:18px;height:18px;color:var(--gold);flex-shrink:0;margin-top:2px;}

/* cta */
.cta-section{background:var(--indigo-deep);color:#fff;text-align:center;}
.cta-inner{max-width:680px;margin:0 auto;}
.cta-section h2{color:#fff;}
.cta-section p{color:rgba(255,255,255,.75);margin-bottom:30px;}

/* footer */
.site-footer{background:var(--ink);color:rgba(255,255,255,.6);padding:40px 24px;}
.footer-inner{max-width:1120px;margin:0 auto;}
.footer-inner .brand{margin-bottom:12px;}
.footer-inner p{font-size:.8rem;margin:0;}

@media (max-width: 560px){
  .header-inner{padding:12px 16px;gap:10px;flex-wrap:wrap;justify-content:center;}
  .brand-sub{display:none;}
  .brand-name{font-size:.92rem;}
  .btn-small{padding:9px 14px;font-size:.78rem;}
  .section{padding:64px 16px;}
  .demo-panel{padding:20px;}
  #exampleSelect{flex-basis:100%;}
  #playDemo{width:100%;justify-content:center;}
}

@media (max-width: 920px){
  .main-nav{display:none;}
  .card-grid.three{grid-template-columns:1fr;}
  .translation-grid{grid-template-columns:1fr;}
  .split{grid-template-columns:1fr;}
  .split-visual{order:-1;}
  .module-row{grid-template-columns:40px 1fr;}
  .module-row span:nth-child(3){grid-column:1/-1;}
  .flow-steps{flex-direction:column;align-items:center;}
  .flow-arrow{transform:rotate(90deg);}
}