/* =====================================================
   プロマケAI LP Stylesheet
   - モジュール化＆編集しやすい構成
   - セクションごとにコメントを配置
   ===================================================== */

/* ---------------------------------
   0) CSS変数（ブランドカラー・共通寸法）
---------------------------------- */
:root{
   --bg:#ffffff; --text:#0a0a0a; --muted:#6b7280; --line:#e5e7eb; --panel:#f8fafc;
   --primary:#111827; 
   /* New palette inspired by reference: violet → red gradient, warm accents */
   --grad1:#7c3aed; /* violet-600 */
   --grad2:#ef4444; /* red-500 */
   --accent:#f97316; /* orange-500 */
   --accent2:#3b82f6; /* blue-500 */
   --cta:#ef4444; /* main CTA red */
   --cta-dark:#dc2626; /* hover */
   --white:#fff;
   --radius-xl:16px; --radius-2xl:24px; --shadow:0 2px 10px rgba(0,0,0,.06);
   --max:1200px; --space:24px;
 }
 *{box-sizing:border-box}
 html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans JP",sans-serif}
 img{max-width:100%;display:block}
 a{color:inherit;text-decoration:none}
 .container{max-width:var(--max);margin-inline:auto;padding:0 24px}
 .btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 16px;border-radius:999px;background:var(--cta);color:#fff;font-weight:700;border:0;box-shadow:0 2px 8px rgba(239,68,68,.25)}
 .btn:hover{background:var(--cta-dark);box-shadow:0 6px 16px rgba(239,68,68,.35)}
 .btn--ghost{background:transparent;color:var(--primary);border:1px solid var(--line)}
 .btn:hover{filter:saturate(1.1);box-shadow:0 6px 16px rgba(99,102,241,.35)}
 .btn--ghost{background:transparent;color:var(--primary);border:1px solid var(--line)}
 .btn:hover{opacity:.9}
 .btn--ghost{background:transparent;color:var(--primary);border-color:var(--line)}
 .chip{display:inline-flex;gap:8px;align-items:center;border:1px solid var(--line);border-radius:999px;padding:6px 10px;font-size:12px}
 .hero .chip{background:rgba(255,255,255,.88)}
 .dot{width:8px;height:8px;border-radius:999px;background:#10b981}

 /* Header */
 .header{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.75);backdrop-filter:saturate(180%) blur(8px);border-bottom:1px solid var(--line)}
 .nav{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
 .brand{display:flex;gap:10px;align-items:center;font-weight:700}
 .brand-mark{width:32px;height:32px;border-radius:14px;background:linear-gradient(135deg,var(--grad1),var(--grad2))}
 .nav-links{display:none;gap:24px;font-size:14px}
 .nav-links a{transition:color .2s ease}
 .nav-links a:hover{color:var(--cta)}
 .nav-cta{display:none}
 .hamburger{position:relative;display:inline-flex;width:36px;height:24px;background:transparent;border:0;padding:6px}
.hamburger span{position:absolute;left:6px;right:6px;height:3px;background:#111;border-radius:2px;transition:.25s;transform-origin:50% 50%}
.hamburger span:nth-child(1){top:6px}
.hamburger span:nth-child(2){top:50%;transform:translateY(-50%)}
.hamburger span:nth-child(3){bottom:6px}
.hamburger.open span:nth-child(1){top:50%;transform:translateY(-50%) rotate(45deg)}
.hamburger.open span:nth-child(2){opacity:0}
.hamburger.open span:nth-child(3){bottom:auto;top:50%;transform:translateY(-50%) rotate(-45deg)}
 @media (min-width:768px){
   .nav-links{display:flex}
   .nav-cta{display:inline-flex}
   .hamburger{display:none}
 }

 /* Hero */
 .hero{position:relative;overflow:hidden}
 .hero::before{content:"";position:absolute;inset:0;opacity:.55;background:linear-gradient(135deg, var(--grad1), var(--grad2));z-index:0}
 .hero-grid{display:grid;gap:28px;grid-template-columns:1fr}
 .hero h1{font-size:40px;line-height:1.2;margin:16px 0 0;color:#fff;text-shadow:0 2px 6px rgba(0,0,0,.25)}
 .hero p.lead{color:rgba(255,255,255,.92);margin-top:16px;text-shadow:0 1px 3px rgba(0,0,0,.25)}
 .hero-form{display:flex;flex-direction:column;gap:12px;margin-top:24px;max-width:700px;margin-left:auto;margin-right:auto}
 .hero-form .btn{width:auto;align-self:center}
 @media (max-width:520px){.hero-form .btn{width:100%}}
 .input{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:12px}
 .preview{position:relative;border:1px solid var(--line);border-radius:16px;background:#fafafa;overflow:hidden}
 .floating{position:absolute;right:-16px;bottom:-16px;display:none;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);padding:12px}
 @media (min-width:960px){
   .hero-grid{grid-template-columns:1.1fr .9fr;align-items:center}
   .floating{display:block}
   .hero h1{font-size:52px}
 }

 .hero .container{position:relative;z-index:1}

 /* Mobile: image first */
 @media (max-width:959px){
   .hero-grid > :first-child{order:2}
   .hero-grid > :nth-child(2){order:1}
 }

 /* Sections */
 section{padding:80px 0}
 .section-muted{background:var(--panel)}

 /* Grids */
 .grid-3{display:grid;gap:20px;grid-template-columns:1fr}
 @media (min-width:960px){.grid-3{grid-template-columns:repeat(3,1fr)}}

 /* Features list */ */
 .features{display:grid;gap:24px;grid-template-columns:1fr}
 .feature-tiles{display:grid;gap:16px;grid-template-columns:1fr 1fr}
 .tile{border:1px solid var(--line);border-radius:12px;padding:16px;background:#fff}
 .tile .path{font-size:12px;color:var(--muted)}
 @media (min-width:960px){.features{grid-template-columns:1.1fr .9fr}}

 /* Social proof */
 .avatars{display:flex;gap:12px;align-items:center}
 .avatar{width:40px;height:40px;border-radius:999px;background:#e5e7eb}

 /* Pricing */
 .pricing{display:grid;gap:20px;grid-template-columns:1fr}
 .plan{border:1px solid var(--line);border-radius:16px;padding:24px;background:#fff}
 .plan--pro{box-shadow:var(--shadow);border-color:#111}
 .price{font-size:32px;font-weight:800}
 .price small{font-size:14px;color:var(--muted);font-weight:600}
 @media (min-width:960px){.pricing{grid-template-columns:repeat(3,1fr)}}

 /* FAQ */
 details{border:1px solid var(--line);border-radius:16px;padding:14px;background:#fff}
summary{cursor:pointer;font-weight:600;position:relative;padding-left:28px;padding-right:36px}
summary::-webkit-details-marker{display:none}
/* Left Q. label */
summary::before{content:"Q.";position:absolute;left:8px;top:0;font-weight:800;color:var(--muted);transition:color .25s ease}
/* Right chevron */
/* summary::after{content:"▸";position:absolute;left:34px;top:0;line-height:1;font-weight:900;color:var(--muted);transition:transform .25s ease, color .25s ease} */
/* Open states */
details[open] summary::before{color:var(--accent)}
details[open] summary{color:var(--accent)}
/* details[open] summary::after{content:"▾";color:var(--accent)} */
 details + details{margin-top:12px}

 /* CTA */
 .cta{border:1px solid var(--line);border-radius:16px;background:#f3f4f6;color:var(--text);padding:24px;box-shadow:none}

 /* Footer */
 footer{border-top:1px solid var(--line)}
 .foot{text-align:center;display:grid;gap:20px;grid-template-columns:1fr}
 @media (min-width:840px){.foot{grid-template-columns:1fr auto}}

 /* Utils */
 .muted{color:var(--muted)}
 .title{position:relative;font-size:32px;font-weight:800;padding-bottom:8px;text-align:center}
 .title::after{content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:0;width:72px;height:4px;border-radius:4px;background:linear-gradient(90deg,var(--grad1),var(--grad2))}
 .title-lg{font-size:36px;font-weight:800}
 .mt-4{margin-top:16px}.mt-6{margin-top:24px}.mt-8{margin-top:32px}
.card{border:1px solid var(--line);border-radius:12px;padding:16px;background:#fff}
.icon-wrap{width:56px;height:56px;border-radius:16px;background:linear-gradient(135deg,rgba(124,58,237,.12),rgba(239,68,68,.12));display:grid;place-items:center;margin-bottom:12px;border:1px solid var(--line)}
.icon-wrap svg{width:28px;height:28px;stroke:#6d28d9;fill:none}
.thumb{width:64px;height:64px;border-radius:14px;object-fit:cover;;background:#fff;margin-bottom:12px}
#comparison table td:nth-child(3), #comparison table th:nth-child(3){color:var(--cta);font-weight:700}
/* Fancy comparison table */
.cmp{width:100%;border-collapse:separate;border-spacing:0;font-size:14px;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.cmp thead th{background:linear-gradient(90deg,rgba(124,58,237,.08),rgba(239,68,68,.08));padding:14px;text-align:left}
.cmp tbody td{padding:14px;border-top:1px solid var(--line)}
.cmp tbody tr:nth-child(odd){background:#fff}
.cmp tbody tr:nth-child(even){background:#fafafa}
.cmp thead th:nth-child(3){background:linear-gradient(90deg,rgba(239,68,68,.12),rgba(124,58,237,.06))}
.cmp tbody td:nth-child(3){background:rgba(239,68,68,.04)}
.pill{display:inline-block;margin-left:8px;padding:2px 8px;border-radius:999px;font-size:11px;color:#fff;background:var(--cta)}
.step-badge{display:inline-block;font-size:11px;font-weight:800;letter-spacing:.04em;color:#fff;background:linear-gradient(90deg,var(--grad1),var(--grad2));padding:4px 8px;border-radius:999px}
#comparison table td:nth-child(3), #comparison table th:nth-child(3){color:var(--cta);font-weight:700}
/* Mobile nav vertical styles */
#mnav .mnav-link{display:block;padding:14px 4px;border:none;border-radius:0;background:transparent;margin:0;border-bottom:1px solid var(--line)}
#mnav .mnav-link:last-child{border-bottom:none}
#mnav .mnav-link.is-cta{background:transparent;color:var(--cta);border-color:var(--line);font-weight:700}
#mnav .mnav-link.is-cta{background:linear-gradient(90deg,var(--grad1),var(--grad2));color:#fff;border-color:transparent}

#comparison table td:nth-child(3), #comparison table th:nth-child(3){color:var(--cta);font-weight:700}
/* Fancy comparison table */
.cmp{width:100%;border-collapse:separate;border-spacing:0;font-size:14px;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.cmp thead th{background:linear-gradient(90deg,rgba(124,58,237,.08),rgba(239,68,68,.08));padding:14px;text-align:left}
.cmp tbody td{padding:14px;border-top:1px solid var(--line)}
.cmp tbody tr:nth-child(odd){background:#fff}
.cmp tbody tr:nth-child(even){background:#fafafa}
.cmp thead th:nth-child(3){background:linear-gradient(90deg,rgba(239,68,68,.12),rgba(124,58,237,.06))}
.cmp tbody td:nth-child(3){background:rgba(239,68,68,.04)}
.pill{display:inline-block;margin-left:8px;padding:2px 8px;border-radius:999px;font-size:11px;color:#fff;background:var(--cta)}
.step-badge{display:inline-block;font-size:11px;font-weight:800;letter-spacing:.04em;color:#fff;background:linear-gradient(90deg,var(--grad1),var(--grad2));padding:4px 8px;border-radius:999px}
/* Hover animations */
.card{transition:transform .2s ease, box-shadow .2s ease}
.card:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,.06)}
.btn{transition:transform .2s ease, box-shadow .2s ease, background-color .2s ease, filter .2s ease}
.btn:hover{background:var(--cta-dark);transform:translateY(-1px);box-shadow:0 3px 8px rgba(239,68,68,.18)}
/* --- Section-specific sizing & centering updates --- */
#problem .card, #howto .card, #features .card{ text-align:center; }
#problem .thumb{ width:128px; height:128px; margin:0 auto 12px; }
#problem .icon-wrap{ margin-left:auto; margin-right:auto; }
#howto .icon-wrap{ width:112px; height:112px; margin-left:auto; margin-right:auto; }
#howto .icon-wrap svg{ width:56px; height:56px; }
#features .icon-wrap{ width:100px; height:100px; margin-left:auto; margin-right:auto; }
#features .icon-wrap svg{ width:42px; height:42px; }
/* --- Card text alignment update (headings center, others left) --- */
#problem .card, #howto .card, #features .card { text-align: left; }
#problem .card h3, #howto .card h3, #features .card h3 { text-align: center; }