@import url("https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@400;700&family=Noto+Sans+JP:wght@400;500;700&display=swap");


*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --bg:#FAFAF8;
  --white:#FFFFFF;
  --primary:#1A5E4E;
  --primary-hover:#256B59;
  --accent:#4ADE80;
  --accent-bg:#ECFDF5;
  --accent-border:#BBF7D0;
  --text:#1C2B2B;
  --muted:#6B7F7A;
  --border:#E2EBE8;
  --dark:#0F3428;
  --warn-bg:#FEF3C7;
  --warn-text:#92400E;
  --warn-border:#FDE68A;
}

html{scroll-behavior:smooth}
body{font-family:'Noto Sans JP',system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.7}

.serif{font-family:'Noto Serif JP',serif;font-weight:700}

/* ── Header ── */
header{position:sticky;top:0;z-index:100;background:rgba(250,250,248,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}
.header-inner{max-width:1080px;margin:0 auto;padding:0 1.5rem;height:64px;display:flex;align-items:center;justify-content:space-between}
.logo{text-decoration:none;color:var(--primary)}
.logo-name{font-family:'Noto Serif JP',serif;font-size:1.25rem;font-weight:700;letter-spacing:-.02em;display:block;line-height:1.1}
.logo-ruby{font-family:'Noto Sans JP',sans-serif;font-size:.65rem;color:var(--muted);letter-spacing:.08em}
.btn{display:inline-block;text-decoration:none;font-family:'Noto Sans JP',sans-serif;font-weight:700;border-radius:8px;cursor:pointer;transition:background .2s,transform .1s;border:none}
.btn-sm{font-size:.875rem;padding:.55rem 1.1rem;background:var(--primary);color:var(--white)}
.btn-sm:hover{background:var(--primary-hover)}
.btn-lg{font-size:1rem;padding:.875rem 1.75rem;background:var(--primary);color:var(--white)}
.btn-lg:hover{background:var(--primary-hover);transform:translateY(-1px)}
.btn-accent{font-size:1rem;padding:.875rem 2rem;background:var(--accent);color:var(--text)}
.btn-accent:hover{transform:translateY(-2px)}
.btn-block{display:block;text-align:center;width:100%}

/* ── Hero ── */
.hero{max-width:1080px;margin:0 auto;padding:5rem 1.5rem 4rem;display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:.4rem;background:var(--accent-bg);color:var(--primary);border:1px solid var(--accent-border);border-radius:100px;padding:.3rem .9rem;font-size:.78rem;font-weight:500;margin-bottom:1.25rem}
.hero-badge::before{content:'';width:8px;height:8px;background:var(--accent);border-radius:50%;flex-shrink:0}
.hero h1{font-size:clamp(1.7rem,3.2vw,2.75rem);line-height:1.35;letter-spacing:-.02em;margin-bottom:1.25rem}
.hero h1 em{font-style:normal;color:var(--primary)}
.hero-sub{color:var(--muted);font-size:.975rem;line-height:1.85;margin-bottom:2rem}
.hero-cta{display:flex;align-items:center;gap:1rem;flex-wrap:wrap}
.hero-note{font-size:.78rem;color:var(--muted)}

/* chat demo */
.chat-demo{background:var(--white);border:1px solid var(--border);border-radius:16px;overflow:hidden;box-shadow:0 4px 28px rgba(26,94,78,.1)}
.chat-hd{background:var(--primary);padding:.7rem 1rem;display:flex;align-items:center;gap:.5rem}
.chat-hd-dot{width:8px;height:8px;background:var(--accent);border-radius:50%}
.chat-hd-title{color:rgba(255,255,255,.85);font-size:.78rem;font-weight:500}
.chat-body{padding:1.25rem;min-height:260px;display:flex;flex-direction:column;gap:.75rem;overflow-y:auto}
.chat-bubble{max-width:86%;padding:.6rem .95rem;border-radius:12px;font-size:.85rem;line-height:1.65;opacity:0;transform:translateY(6px);transition:opacity .3s,transform .3s}
.chat-bubble.show{opacity:1;transform:translateY(0)}
.chat-bubble.user{background:var(--primary);color:var(--white);margin-left:auto;border-bottom-right-radius:4px}
.chat-bubble.ai{background:var(--accent-bg);color:var(--text);border-bottom-left-radius:4px}
.typing-wrap{display:inline-flex;gap:4px;align-items:center;padding:.2rem .1rem}
.typing-wrap span{width:7px;height:7px;background:var(--muted);border-radius:50%;animation:bounce 1.1s infinite}
.typing-wrap span:nth-child(2){animation-delay:.18s}
.typing-wrap span:nth-child(3){animation-delay:.36s}
@keyframes bounce{0%,70%,100%{transform:translateY(0);opacity:.45}35%{transform:translateY(-5px);opacity:1}}
.chat-ft{border-top:1px solid var(--border);padding:.7rem 1rem;display:flex;align-items:center;gap:.5rem}
.chat-input-mock{flex:1;background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:.45rem .75rem;font-size:.78rem;color:var(--muted)}
.chat-send{width:32px;height:32px;background:var(--primary);border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.chat-send svg{width:14px;height:14px;fill:white}

/* ── Sections ── */
.section{padding:5rem 1.5rem}
.section-inner{max-width:1080px;margin:0 auto}
.section-eyebrow{font-size:.72rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--primary);margin-bottom:.75rem}
.section-title{font-size:clamp(1.45rem,2.4vw,2rem);line-height:1.45;margin-bottom:1rem}
.section-sub{color:var(--muted);max-width:540px;margin-bottom:3rem;font-size:.95rem}
.on-white{background:var(--white)}

/* ── Pain ── */
.pain-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}
.pain-card{background:var(--bg);border:1px solid var(--border);border-radius:12px;padding:1.5rem}
.pain-emoji{font-size:2rem;margin-bottom:.75rem}
.pain-card h3{font-size:.975rem;font-weight:700;margin-bottom:.45rem}
.pain-card p{font-size:.875rem;color:var(--muted);line-height:1.75}

/* ── Steps ── */
.step-list{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem;position:relative}
.step-list::before{content:'';position:absolute;top:24px;left:calc(33.33% - 10px);right:calc(33.33% - 10px);height:1px;background:var(--border)}
.step{text-align:center}
.step-num{width:48px;height:48px;background:var(--primary);color:var(--white);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.1rem;margin:0 auto 1rem;position:relative;z-index:1}
.step h3{font-size:.975rem;font-weight:700;margin-bottom:.45rem}
.step p{font-size:.875rem;color:var(--muted)}

/* ── Features ── */
.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem}
.feature-card{background:var(--bg);border:1px solid var(--border);border-radius:12px;padding:1.75rem}
.feature-icon{width:44px;height:44px;background:var(--accent-bg);border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:1.3rem;margin-bottom:1rem}
.feature-card h3{font-size:.975rem;font-weight:700;margin-bottom:.45rem}
.feature-card p{font-size:.875rem;color:var(--muted);line-height:1.75}

/* ── Pricing ── */
.pricing-card{max-width:460px;margin:0 auto;background:var(--white);border:2px solid var(--primary);border-radius:16px;padding:2.25rem;text-align:center}
.remaining-badge{display:inline-block;background:var(--warn-bg);color:var(--warn-text);border:1px solid var(--warn-border);border-radius:100px;padding:.3rem .9rem;font-size:.78rem;font-weight:500;margin-bottom:1.25rem}
.pricing-label{font-size:.72rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--primary);margin-bottom:.5rem}
.pricing-price{font-size:3.25rem;line-height:1;margin-bottom:.25rem}
.pricing-period{color:var(--muted);font-size:.82rem;margin-bottom:1.75rem;line-height:1.6}
.pricing-list{list-style:none;text-align:left;margin-bottom:2rem}
.pricing-list li{display:flex;align-items:flex-start;gap:.5rem;padding:.5rem 0;border-bottom:1px solid var(--border);font-size:.9rem}
.pricing-list li:last-child{border-bottom:none}
.pricing-check{color:var(--primary);font-weight:700;flex-shrink:0}
.pricing-note{font-size:.78rem;color:var(--muted);margin-top:1rem;line-height:1.7}

/* ── CTA section ── */
.cta-section{background:var(--primary);padding:5.5rem 1.5rem}
.cta-inner{max-width:600px;margin:0 auto;text-align:center}
.cta-inner h2{font-size:clamp(1.5rem,2.8vw,2.1rem);color:var(--white);margin-bottom:1rem}
.cta-inner p{color:rgba(255,255,255,.72);margin-bottom:2rem;line-height:1.8;font-size:.975rem}

/* ── Footer ── */
footer{background:var(--dark);color:rgba(255,255,255,.45);text-align:center;padding:2rem 1.5rem;font-size:.78rem}
footer a{color:rgba(255,255,255,.45);text-decoration:none}
footer a:hover{color:rgba(255,255,255,.7)}

/* ── Responsive ── */
@media(max-width:768px){
  .hero{grid-template-columns:1fr;padding:2.5rem 1.25rem;gap:2rem}
  .pain-grid,.feature-grid{grid-template-columns:1fr}
  .step-list{grid-template-columns:1fr;gap:1.25rem}
  .step-list::before{display:none}
  .step{text-align:left;display:flex;gap:1rem;align-items:flex-start}
  .step-num{flex-shrink:0;margin:0}
}
@media(prefers-reduced-motion:reduce){
  .chat-bubble{transition:none}
  .typing-wrap span{animation:none;opacity:1}
}