/* ===================================================================
 *  Mandala Chart Association – Shared LP Brand Stylesheet
 *  Used by:  /lp/notebook-a/  /lp/a-advanced/  /lp/b-basic/
 *            /lp/b-advanced/  /lp/mandala-okr/
 *  Version:  2026.04 – created for the "基礎を固める5つのステップ" seminar set
 * =================================================================== */

/* ---------- Design tokens ---------------------------------------- */
:root{
  --navy-900:#0a1f3d;     /* header / hero background */
  --navy-800:#11294d;
  --navy-700:#1a3a6b;
  --navy-600:#1a5fa8;
  --gold-600:#b8962e;     /* primary accent (brand gold) */
  --gold-500:#c9a83c;
  --gold-100:#f6efd9;
  --cream:#faf6ec;        /* hero / section backgrounds */
  --cream-2:#fdfaf2;
  --ink:#1a1a1a;
  --ink-2:#3d3d3d;
  --ink-3:#6a6a6a;
  --line:#e6dfcb;
  --white:#ffffff;
  --shadow:0 4px 20px rgba(10,31,61,.08);
  --radius:12px;
  --font-sans:"Noto Sans JP", Meiryo, "Hiragino Kaku Gothic ProN", sans-serif;
  --font-serif:"Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --maxw:1120px;
}

/* ---------- Reset / base ----------------------------------------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  color:var(--ink);
  line-height:1.8;
  background:var(--white);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--navy-600);text-decoration:none}
a:hover{text-decoration:underline}

/* ---------- Site header (navy bar) ------------------------------- */
.site-header{
  background:var(--navy-900);
  color:var(--white);
  position:sticky;top:0;z-index:50;
}
.header-inner{
  max-width:var(--maxw);margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 24px;
}
.site-logo{
  display:flex;align-items:center;gap:12px;
  color:var(--white);font-family:var(--font-serif);
  font-weight:600;letter-spacing:.04em;
}
.site-logo svg{width:36px;height:36px;flex-shrink:0}
.site-logo .logo-text{font-size:15px;line-height:1.2}
.site-logo .logo-text small{display:block;font-size:10px;opacity:.7;letter-spacing:.2em;font-family:var(--font-sans)}
.site-nav ul{list-style:none;margin:0;padding:0;display:flex;gap:22px;font-size:13px}
.site-nav a{color:rgba(255,255,255,.85)}
.site-nav a:hover{color:var(--gold-500);text-decoration:none}
.nav-cta{
  background:var(--gold-600);color:var(--white)!important;
  padding:8px 18px;border-radius:999px;font-weight:600;
}
.nav-cta:hover{background:var(--gold-500);text-decoration:none}

/* mobile menu */
.menu-toggle{display:none;background:none;border:none;color:#fff;font-size:24px;cursor:pointer}
@media(max-width:860px){
  .menu-toggle{display:block}
  .site-nav{
    position:absolute;top:100%;left:0;right:0;background:var(--navy-800);
    display:none;
  }
  .site-nav.open{display:block}
  .site-nav ul{flex-direction:column;padding:18px 24px;gap:16px}
}

/* ---------- Hero ------------------------------------------------- */
.hero{
  position:relative;background:var(--navy-900);color:#fff;
  padding:72px 24px 88px;overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;opacity:.12;
  background-image:
    linear-gradient(rgba(255,255,255,.25) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.25) 1px,transparent 1px);
  background-size:40px 40px;
}
.hero-inner{position:relative;max-width:var(--maxw);margin:0 auto;text-align:center}
.hero-step{
  display:inline-block;background:var(--gold-600);color:#fff;
  padding:6px 18px;border-radius:999px;font-size:13px;letter-spacing:.12em;
  font-weight:700;margin-bottom:20px;
}
.hero-title{
  font-family:var(--font-serif);font-size:clamp(28px,4.2vw,44px);
  line-height:1.4;margin:0 0 18px;font-weight:600;letter-spacing:.04em;
}
.hero-subtitle{
  font-size:clamp(15px,1.6vw,18px);opacity:.9;margin:0 0 28px;font-weight:400;
}
.hero-lead{
  max-width:720px;margin:0 auto 32px;line-height:2;font-size:15px;opacity:.85;
}
.hero-cta{
  display:inline-flex;align-items:center;gap:10px;
  background:var(--gold-600);color:#fff;padding:14px 32px;border-radius:999px;
  font-weight:700;font-size:15px;box-shadow:var(--shadow);
  transition:transform .2s ease,background .2s ease;
}
.hero-cta:hover{background:var(--gold-500);transform:translateY(-2px);text-decoration:none}

/* ---------- Breadcrumb step navigator ---------------------------- */
.step-nav{background:var(--cream);padding:28px 24px;border-bottom:1px solid var(--line)}
.step-nav-inner{max-width:var(--maxw);margin:0 auto}
.step-nav h3{
  font-family:var(--font-serif);font-size:18px;text-align:center;margin:0 0 18px;
  color:var(--navy-900);letter-spacing:.06em;
}
.step-list{
  display:grid;grid-template-columns:repeat(5,1fr);gap:10px;list-style:none;padding:0;margin:0;
}
.step-list li{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:14px 10px;text-align:center;position:relative;transition:all .2s ease;
}
.step-list li a{color:var(--ink);display:block}
.step-list li a:hover{text-decoration:none}
.step-list li:hover{border-color:var(--gold-600);transform:translateY(-2px)}
.step-list .num{
  display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:50%;
  background:var(--gold-100);color:var(--gold-600);font-weight:700;font-size:14px;margin-bottom:6px;
}
.step-list .label{display:block;font-size:12px;line-height:1.4;color:var(--ink-2)}
.step-list .current{background:var(--gold-600);border-color:var(--gold-600)}
.step-list .current .num{background:rgba(255,255,255,.25);color:#fff}
.step-list .current .label{color:#fff;font-weight:600}
.step-list .current a{color:#fff}
@media(max-width:720px){
  .step-list{grid-template-columns:repeat(5,1fr);gap:6px}
  .step-list li{padding:10px 4px}
  .step-list .label{font-size:10px}
  .step-list .num{width:24px;height:24px;font-size:12px}
}

/* ---------- Section framework ------------------------------------ */
.section{padding:72px 24px}
.section.alt{background:var(--cream)}
.section.dark{background:var(--navy-900);color:#fff}
.section.dark .section-title{color:#fff}
.section.dark .section-sub{color:rgba(255,255,255,.8)}
.section-inner{max-width:var(--maxw);margin:0 auto}
.section-eyebrow{
  display:block;text-align:center;color:var(--gold-600);
  letter-spacing:.2em;font-size:12px;font-weight:700;margin-bottom:8px;
}
.section-title{
  font-family:var(--font-serif);text-align:center;
  font-size:clamp(22px,2.8vw,30px);line-height:1.5;color:var(--navy-900);
  margin:0 0 14px;font-weight:600;letter-spacing:.05em;
}
.section-title::after{
  content:"";display:block;width:56px;height:3px;background:var(--gold-600);
  margin:14px auto 0;border-radius:2px;
}
.section.dark .section-title::after{background:var(--gold-500)}
.section-sub{text-align:center;color:var(--ink-2);margin:0 auto 40px;max-width:720px;font-size:15px}

/* ---------- Cards ------------------------------------------------ */
.card-grid{display:grid;gap:24px}
.card-grid.cols-3{grid-template-columns:repeat(3,1fr)}
.card-grid.cols-2{grid-template-columns:repeat(2,1fr)}
.card-grid.cols-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:860px){
  .card-grid.cols-3,.card-grid.cols-4{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
  .card-grid{grid-template-columns:1fr!important}
}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 24px;box-shadow:var(--shadow);
}
.card h4{
  font-family:var(--font-serif);color:var(--navy-900);margin:0 0 10px;
  font-size:18px;letter-spacing:.03em;
}
.card p{margin:0;color:var(--ink-2);font-size:14px;line-height:1.9}
.card .card-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;background:var(--gold-600);color:#fff;border-radius:50%;
  font-weight:700;margin-bottom:12px;
}

/* ---------- Flow / timeline ------------------------------------- */
.flow{max-width:780px;margin:0 auto}
.flow-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 24px;margin-bottom:14px;position:relative;
}
.flow-item dt{
  display:flex;align-items:center;gap:12px;font-family:var(--font-serif);
  color:var(--navy-900);font-size:17px;margin-bottom:6px;
}
.flow-item dt::before{
  content:counter(flow);counter-increment:flow;
  width:32px;height:32px;background:var(--navy-900);color:#fff;
  border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;
}
.flow-item dd{margin:0 0 0 44px;color:var(--ink-2);font-size:14px;line-height:1.9}
.flow{counter-reset:flow}

/* ---------- Price / CTA block ----------------------------------- */
.pricebox{
  max-width:720px;margin:0 auto;background:#fff;border:2px solid var(--gold-600);
  border-radius:16px;padding:36px 32px;text-align:center;box-shadow:var(--shadow);
}
.pricebox .price-label{color:var(--gold-600);letter-spacing:.2em;font-size:12px;font-weight:700}
.pricebox .price-amount{
  font-family:var(--font-serif);font-size:44px;color:var(--navy-900);margin:6px 0;font-weight:700;
}
.pricebox .price-amount small{font-size:18px;margin-left:6px;color:var(--ink-3);font-weight:400}
.pricebox .price-note{color:var(--ink-3);font-size:13px;margin-bottom:20px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  background:var(--gold-600);color:#fff;padding:14px 32px;border-radius:999px;
  font-weight:700;font-size:15px;border:none;cursor:pointer;
  transition:all .2s ease;box-shadow:var(--shadow);
}
.btn:hover{background:var(--gold-500);transform:translateY(-2px);text-decoration:none;color:#fff}
.btn.ghost{background:transparent;border:2px solid var(--gold-600);color:var(--gold-600)}
.btn.ghost:hover{background:var(--gold-600);color:#fff}
.btn.navy{background:var(--navy-900)}
.btn.navy:hover{background:var(--navy-700)}
.btn-row{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:14px}

/* ---------- Calendar embed -------------------------------------- */
.calendar-wrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);margin-bottom:24px;
}
.calendar-wrap iframe{border:0;width:100%;height:620px;display:block}
@media(max-width:720px){.calendar-wrap iframe{height:500px}}

/* ---------- FAQ -------------------------------------------------- */
.faq{max-width:820px;margin:0 auto}
.faq details{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:0;margin-bottom:12px;overflow:hidden;
}
.faq summary{
  list-style:none;cursor:pointer;padding:18px 24px;
  font-weight:600;color:var(--navy-900);display:flex;align-items:center;gap:12px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{
  content:"Q";width:28px;height:28px;background:var(--gold-600);color:#fff;
  border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  font-weight:700;flex-shrink:0;font-size:13px;
}
.faq summary::after{content:"+";margin-left:auto;color:var(--gold-600);font-size:22px;transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq .a{padding:0 24px 22px 64px;color:var(--ink-2);font-size:14px;line-height:1.9}

/* ---------- Final CTA ------------------------------------------- */
.final-cta{
  background:linear-gradient(135deg,var(--navy-900),var(--navy-700));
  color:#fff;padding:72px 24px;text-align:center;
}
.final-cta .cta-title{
  font-family:var(--font-serif);font-size:clamp(22px,2.8vw,30px);
  margin:0 0 12px;letter-spacing:.05em;
}
.final-cta .cta-sub{opacity:.85;max-width:640px;margin:0 auto 26px}

/* ---------- Footer ---------------------------------------------- */
.site-footer{background:#0a1428;color:rgba(255,255,255,.7);padding:42px 24px 28px;font-size:13px}
.site-footer-inner{max-width:var(--maxw);margin:0 auto}
.site-footer-top{
  display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;
  padding-bottom:20px;border-bottom:1px solid rgba(255,255,255,.12);
}
.site-footer-top a{color:rgba(255,255,255,.75);margin-right:16px}
.site-footer-top a:hover{color:var(--gold-500);text-decoration:none}
.site-footer-bot{padding-top:18px;text-align:center;font-size:12px;opacity:.6}

/* ---------- Utility --------------------------------------------- */
.center{text-align:center}
.mt-0{margin-top:0}.mt-8{margin-top:8px}.mt-16{margin-top:16px}.mt-24{margin-top:24px}.mt-32{margin-top:32px}
.hl{color:var(--gold-600);font-weight:700}
.badge{display:inline-block;padding:4px 10px;background:var(--gold-100);color:var(--gold-600);border-radius:999px;font-size:12px;font-weight:700;letter-spacing:.05em}