/* Landing Page Styles extracted from mockup */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 78px;
}
@media(max-width: 620px) {
  html { scroll-padding-top: 68px; }
}

.landing-page {
  /* Base Colors based on hsl(40 10% 90%) */
  --bg: hsl(40, 10%, 90%);
  --bg-soft: hsl(40, 20%, 95%);
  --surface: #ffffff;
  --surface-accent: hsl(40, 25%, 85%);
  
  /* Primary Palette: Warm Terracotta & Gold */
  --primary: hsl(38, 50%, 60%);
  --primary-dark: hsl(38, 50%, 45%);
  --primary-soft: hsl(38, 40%, 85%);
  --accent: hsl(35, 60%, 50%); 
  
  /* Text & Neutrals: Espresso & Warm Grays */
  --ink: hsl(38, 20%, 15%);
  --navy: hsl(38, 15%, 20%);
  --text: hsl(38, 10%, 30%);
  --muted: hsl(38, 10%, 45%);
  --border: hsl(40, 15%, 82%);
  --line: var(--border);
  
  /* Utilities */
  --green: hsl(140, 40%, 45%);
  --shadow: 0 20px 60px rgba(59, 51, 48, .10);
  --shadow-sm: 0 8px 30px rgba(59, 51, 48, .08);
  --radius: 24px;
  --container: 1180px;

  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans JP", Arial, sans-serif;
  color: var(--ink); 
  background: var(--bg); 
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  
  min-height: 100vh;
}

.landing-page h1, .landing-page h2, .landing-page h3, .landing-page h4, .landing-page h5, .landing-page h6 { font-weight: 750; }
.landing-page b, .landing-page strong { font-weight: 750; }

.landing-page * { box-sizing: border-box; }
.landing-page a { text-decoration: none; color: inherit; }
.landing-page button { font: inherit; }
.landing-page .container { width: min(1180px, calc(100% - 40px)); margin: auto; }

.landing-page header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  background: rgba(255, 255, 255, .88); backdrop-filter: blur(16px);
  border-bottom: 1px solid hsla(40, 15%, 82%, .75);
}
.landing-page main {
  padding-top: 78px;
}
.landing-page .nav { height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.landing-page .brand { display: flex; align-items: center; gap: 11px; font-weight: 850; letter-spacing: -.03em; font-size: 1.2rem; }
.landing-page .brand-mark {
  width: 36px; height: 36px; border-radius: 11px; background: var(--primary);
  display: grid; place-items: center; color: white; box-shadow: 0 8px 20px hsla(38, 50%, 60%, .25);
}
.landing-page .nav-links { display: flex; align-items: center; gap: 28px; color: var(--text); font-size: .92rem; font-weight: 600; }
.landing-page .nav-links a:hover { color: var(--primary-dark); }
.landing-page .actions { display: flex; align-items: center; gap: 10px; }
.landing-page .lang-btn {
  border: 1px solid var(--line); background: white; color: var(--ink);
  border-radius: 999px; padding: 9px 14px; font-weight: 750; cursor: pointer; transition: .2s;
}
.landing-page .lang-btn:hover { border-color: var(--primary); box-shadow: 0 4px 12px hsla(38, 50%, 60%, .15); }
.landing-page .menu-btn { display: none; border: 0; background: none; font-size: 1.5rem; cursor: pointer; }

.landing-page .hero {
  position: relative; overflow: hidden; padding: 92px 0 88px; background:
  radial-gradient(circle at 8% 12%, hsla(38, 50%, 60%, .15), transparent 30%),
  radial-gradient(circle at 91% 30%, hsla(38, 50%, 45%, .1), transparent 28%),
  linear-gradient(180deg, #fff 0%, var(--bg-soft) 100%);
}
.landing-page .hero-grid { display: grid; grid-template-columns: 1.02fr .98fr; align-items: center; gap: 70px; }
.landing-page .eyebrow {
  display: inline-flex; align-items: center; gap: 8px; padding: 7px 12px; border-radius: 999px;
  background: var(--primary-soft); color: var(--primary-dark); font-size: .78rem; font-weight: 800; margin-bottom: 22px;
}
.landing-page .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--primary); }
.landing-page h1 { font-size: clamp(3rem, 6vw, 5.25rem); line-height: 1.02; letter-spacing: -.055em; max-width: 700px; margin: 0; }
.landing-page h1 em { font-style: normal; color: var(--primary); }
.landing-page .hero-copy { font-size: 1.13rem; color: var(--muted); max-width: 610px; margin: 26px 0 32px; }
.landing-page .hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.landing-page .btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  border-radius: 13px; padding: 13px 19px; font-weight: 800; transition: .2s; cursor: pointer;
}
.landing-page .btn-primary { background: var(--primary); color: white; box-shadow: 0 12px 25px hsla(38, 50%, 60%, .30); border: none; }
.landing-page .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); }
.landing-page .btn-secondary { background: white; border: 1px solid var(--line); color: var(--ink); }
.landing-page .btn-secondary:hover { border-color: var(--primary); transform: translateY(-2px); }
.landing-page .hero-proof { display: flex; align-items: center; gap: 18px; margin-top: 28px; color: var(--muted); font-size: .84rem; }
.landing-page .proof-line { height: 1px; width: 34px; background: var(--border); }
.landing-page .proof-strong { font-weight: 800; color: var(--ink); }

.landing-page .chat-visual { position: relative; }
.landing-page .chat-window {
  background: white; border: 1px solid var(--border); border-radius: 28px;
  box-shadow: var(--shadow); padding: 18px; transform: rotate(1deg);
}
.landing-page .chat-top { display: flex; justify-content: space-between; align-items: center; padding: 4px 4px 16px; border-bottom: 1px solid var(--surface-accent); }
.landing-page .chat-user { display: flex; align-items: center; gap: 10px; font-size: .82rem; font-weight: 800; }
.landing-page .avatar { width: 34px; height: 34px; border-radius: 11px; background: var(--primary-soft); display: grid; place-items: center; }
.landing-page .online { width: 8px; height: 8px; background: var(--green); border-radius: 50%; display: inline-block; margin-left: 3px; }
.landing-page .chat-body { padding: 18px 8px 8px; display: grid; gap: 15px; }
.landing-page .msg { max-width: 82%; padding: 12px 14px; border-radius: 16px; font-size: .82rem; }
.landing-page .msg small { display: block; color: var(--muted); margin-bottom: 5px; font-size: .68rem; font-weight: 700; }
.landing-page .msg-in { background: var(--bg-soft); border-top-left-radius: 5px; }
.landing-page .msg-out { margin-left: auto; background: var(--primary); color: white; border-top-right-radius: 5px; }
.landing-page .msg-out small { color: var(--primary-soft); }
.landing-page .translation {
  margin: 0 8px; padding: 12px 13px; border: 1px solid var(--border); background: var(--bg-soft);
  border-radius: 14px; color: var(--ink); font-size: .76rem;
}
.landing-page .translation b { color: var(--primary-dark); }
.landing-page .chat-input { margin-top: 6px; padding: 11px; border: 1px solid var(--border); border-radius: 13px; color: var(--muted); font-size: .75rem; }
.landing-page .float-card {
  position: absolute; left: -28px; bottom: 25px; background: white; border: 1px solid var(--line);
  border-radius: 17px; padding: 13px 15px; box-shadow: 0 15px 35px rgba(59, 51, 48, .08); font-size: .75rem;
}
.landing-page .float-card b { display: block; font-size: .86rem; margin-bottom: 2px; }

.landing-page .section { padding: 100px 0; }
.landing-page .section.white { background: white; }
.landing-page .section-head { max-width: 720px; margin: 0 auto 48px; text-align: center; }
.landing-page .kicker { color: var(--primary-dark); font-size: .76rem; font-weight: 900; letter-spacing: .13em; text-transform: uppercase; margin-bottom: 10px; }
.landing-page h2 { font-size: clamp(2rem, 4vw, 3.1rem); line-height: 1.1; letter-spacing: -.04em; margin: 0; }
.landing-page .section-head p { color: var(--muted); margin-top: 15px; margin-bottom: 0; }

.landing-page .overview-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 70px; align-items: center; }
.landing-page .diagram {
  min-height: 390px; border-radius: 28px; background: linear-gradient(145deg, var(--surface), var(--bg-soft));
  border: 1px solid var(--border); position: relative; display: grid; place-items: center; overflow: hidden;
}
.landing-page .diagram:before, .landing-page .diagram:after { content: ""; position: absolute; border: 1px dashed hsla(38, 50%, 60%, .4); border-radius: 50%; }
.landing-page .diagram:before { width: 310px; height: 310px; } .landing-page .diagram:after { width: 220px; height: 220px; }
.landing-page .node {
  position: absolute; background: white; border: 1px solid var(--border); box-shadow: 0 12px 28px rgba(59, 51, 48, .05);
  border-radius: 17px; padding: 13px 16px; font-weight: 800; font-size: .82rem; z-index: 2;
}
.landing-page .node-a { top: 52px; left: 45px; } .landing-page .node-b { top: 48px; right: 40px; } .landing-page .node-c { bottom: 48px; left: 50%; transform: translateX(-50%); }
.landing-page .bridge {
  width: 112px; height: 112px; border-radius: 50%; background: var(--primary); color: white;
  display: grid; place-items: center; text-align: center; font-size: .83rem; font-weight: 900; z-index: 3;
  box-shadow: 0 18px 35px hsla(38, 50%, 60%, .3);
}
.landing-page .overview-copy h2 { text-align: left; margin-bottom: 18px; }
.landing-page .overview-copy > p { color: var(--muted); margin-bottom: 22px; }
.landing-page .checks { display: grid; gap: 13px; }
.landing-page .check { display: flex; gap: 12px; align-items: flex-start; font-size: .93rem; }
.landing-page .check-icon { flex: 0 0 24px; height: 24px; border-radius: 8px; background: var(--primary-soft); color: var(--primary-dark); display: grid; place-items: center; font-size: .72rem; font-weight: 900; }

.landing-page .feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 17px; }
.landing-page .card {
  background: white; border: 1px solid var(--line); border-radius: 20px; padding: 24px; min-height: 190px;
  transition: .25s;
}
.landing-page .card:hover { transform: translateY(-5px); box-shadow: 0 18px 35px rgba(59, 51, 48, .05); border-color: var(--primary); }
.landing-page .icon {
  width: 42px; height: 42px; border-radius: 13px; background: var(--primary-soft); display: grid; place-items: center;
  color: var(--primary-dark); font-weight: 900; margin-bottom: 20px;
}
.landing-page .card h3 { font-size: 1rem; margin-bottom: 8px; margin-top: 0; letter-spacing: -.01em; }
.landing-page .card p { font-size: .84rem; color: var(--muted); margin: 0; }

.landing-page .workflow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 42px; }
.landing-page .step { position: relative; text-align: center; padding: 0 20px; }
.landing-page .step:not(:last-child):after { content: "→"; position: absolute; right: -8px; top: 20px; color: var(--primary-dark); font-size: 1.3rem; }
.landing-page .step-num { width: 42px; height: 42px; border-radius: 50%; background: var(--primary); color: white; display: grid; place-items: center; margin: 0 auto 14px; font-weight: 900; }
.landing-page .step h3 { font-size: .95rem; margin-bottom: 6px; margin-top: 0; } 
.landing-page .step p { font-size: .8rem; color: var(--muted); margin: 0; }

.landing-page .use-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.landing-page .use-card { background: var(--bg); border: 1px solid var(--line); border-radius: 20px; padding: 25px; }
.landing-page .use-card .icon { margin-bottom: 18px; } 
.landing-page .use-card h3 { font-size: 1rem; margin-bottom: 8px; margin-top: 0; } 
.landing-page .use-card p { font-size: .83rem; color: var(--muted); margin: 0; }

.landing-page .advantage {
  background: var(--navy); color: white; border-radius: 30px; padding: 68px;
  display: grid; grid-template-columns: .8fr 1.2fr; gap: 70px; align-items: center; overflow: hidden; position: relative;
}
.landing-page .advantage:after { content: ""; position: absolute; width: 350px; height: 350px; border-radius: 50%; background: hsla(38, 50%, 60%, .15); right: -130px; top: -160px; }
.landing-page .advantage h2 { max-width: 430px; margin: 0; color: white; } 
.landing-page .advantage p { color: var(--bg-soft); margin-top: 17px; margin-bottom: 0; }
.landing-page .adv-list { display: grid; grid-template-columns: 1fr 1fr; gap: 13px; position: relative; z-index: 2; }
.landing-page .adv-item { display: flex; gap: 10px; padding: 15px; border: 1px solid rgba(255, 255, 255, .10); background: rgba(255, 255, 255, .045); border-radius: 14px; font-size: .84rem; }
.landing-page .adv-item span { color: var(--primary); font-weight: 900; }

.landing-page .cta { padding: 100px 0; background: linear-gradient(180deg, var(--bg-soft), var(--bg)); }
.landing-page .cta-box { text-align: center; max-width: 800px; margin: auto; }
.landing-page .cta-box h2 { font-size: clamp(2.2rem, 4vw, 3.6rem); margin: 0; }
.landing-page .cta-box p { color: var(--muted); max-width: 600px; margin: 17px auto 28px; }

.landing-page footer { background: white; border-top: 1px solid var(--line); padding: 28px 0; }
.landing-page .footer-inner { display: flex; justify-content: space-between; gap: 20px; align-items: center; color: var(--muted); font-size: .78rem; }
.landing-page .footer-brand { font-weight: 850; color: var(--ink); }

@media(max-width: 980px) {
  .landing-page .nav-links { display: none; } 
  .landing-page .menu-btn { display: block; }
  .landing-page .hero-grid, .landing-page .overview-grid, .landing-page .advantage { grid-template-columns: 1fr; }
  .landing-page .hero { padding-top: 65px; } 
  .landing-page .chat-visual { max-width: 650px; margin: auto; }
  .landing-page .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .landing-page .use-grid { grid-template-columns: repeat(2, 1fr); }
  .landing-page .workflow { grid-template-columns: repeat(2, 1fr); gap: 30px; }
  .landing-page .step:not(:last-child):after { display: none; }
  .landing-page .advantage { padding: 45px 30px; gap: 35px; }
}
@media(max-width: 620px) {
  .landing-page main { padding-top: 68px; }
  .landing-page .container { width: min(100% - 28px, 1180px); }
  .landing-page .nav { height: 68px; } 
  .landing-page .brand { font-size: 1rem; } 
  .landing-page .brand-mark { width: 32px; height: 32px; }
  .landing-page .hero { padding: 55px 0 65px; } 
  .landing-page .hero-grid { gap: 48px; }
  .landing-page h1 { font-size: 2.85rem; } 
  .landing-page .hero-copy { font-size: 1rem; }
  .landing-page .hero-proof { display: block; } 
  .landing-page .proof-line { display: none; }
  .landing-page .chat-window { padding: 12px; } 
  .landing-page .float-card { left: 8px; bottom: -22px; }
  .landing-page .section { padding: 72px 0; }
  .landing-page .feature-grid, .landing-page .use-grid, .landing-page .workflow { grid-template-columns: 1fr; }
  .landing-page .diagram { min-height: 320px; }
  .landing-page .node-a { left: 18px; } .landing-page .node-b { right: 18px; } .landing-page .node-c { bottom: 25px; }
  .landing-page .advantage { padding: 38px 24px; } .landing-page .adv-list { grid-template-columns: 1fr; }
  .landing-page .footer-inner { flex-direction: column; align-items: flex-start; }
}