/* ============================================================
   Corporate-Engineer — Design System (Canva Style)
   Fonts: Lora (EN) + Noto Serif JP (JP body) + Noto Sans JP (UI)
   Palette: Blue × White (Clean & Fresh)
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

:root {
  --paper:            #FFFFFF;
  --white:            #F8FAFC;
  --ink:              #0F172A;
  --text:             #1E293B;
  --mid:              #475569;
  --light:            #94A3B8;
  --accent:           #2563EB;
  --accent-hover:     #1D4ED8;
  --accent-pale:      #EFF6FF;
  --border:           #E2E8F0;
  --border-dark:      #CBD5E1;
  --footer-bg:        #0F172A;
  /* Canva design tokens */
  --radius-card:      14px;
  --radius-btn:       8px;
  --radius-tag:       9999px;
  --shadow-card:      0 2px 14px rgba(37,99,235,0.08);
  --shadow-hover:     0 10px 36px rgba(37,99,235,0.16);
  --bg-section:       #F8FAFC;
  --gradient-cta:     linear-gradient(135deg,#1E40AF 0%,#2563EB 55%,#0EA5E9 100%);
}

body {
  font-family: 'Noto Sans JP', sans-serif;
  background: var(--paper);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ── TYPOGRAPHY ── */
.head-xl {
  font-family: 'Lora', 'Noto Serif JP', serif;
  font-weight: 600; font-style: italic;
  font-size: clamp(2.8rem, 5.5vw, 6rem);
  line-height: 1.08; letter-spacing: -0.01em;
  color: var(--ink);
}
.head-xl-accent {
  font-family: 'Lora', 'Noto Serif JP', serif;
  font-weight: 700;
  font-size: clamp(2.8rem, 5.5vw, 6rem);
  line-height: 1.08; letter-spacing: -0.01em;
  color: var(--accent);
}
.head-lg {
  font-family: 'Lora', 'Noto Serif JP', serif;
  font-weight: 700;
  font-size: clamp(2rem, 3.5vw, 3rem);
  line-height: 1.2; letter-spacing: -0.01em;
  color: var(--ink);
}
.head-md {
  font-family: 'Lora', 'Noto Serif JP', serif;
  font-weight: 600;
  font-size: clamp(1.5rem, 2.8vw, 2.2rem);
  line-height: 1.3; color: var(--ink);
}
.head-sm {
  font-family: 'Lora', 'Noto Serif JP', serif;
  font-weight: 600; font-size: 1.3rem; line-height: 1.35; color: var(--ink);
}
.body-serif {
  font-family: 'Noto Serif JP', serif;
  font-weight: 300; font-size: 0.95rem; line-height: 2.2;
  color: var(--text);
}
.label-sm {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.72rem; font-weight: 400;
  letter-spacing: 0.14em; color: var(--mid);
}

/* ── SECTION BADGE ── */
.sec-badge {
  display: inline-flex; align-items: center;
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.72rem; font-weight: 500;
  color: var(--accent);
  background: var(--accent-pale);
  border-radius: var(--radius-tag);
  padding: 5px 16px;
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}
.sec-eyebrow {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.7rem; font-weight: 500;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--accent);
  display: flex; align-items: center; gap: 10px;
}
.sec-eyebrow::before {
  content: ''; width: 18px; height: 1.5px;
  background: var(--accent); display: block;
}

/* ── CANVA CARDS ── */
.cv-card {
  background: var(--paper);
  border-radius: var(--radius-card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  transition: box-shadow .25s, transform .25s;
}
.cv-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

/* ── CANVA CTA ── */
.cv-cta-section {
  background: var(--gradient-cta);
  padding: 96px 56px;
  text-align: center;
}
.cv-cta-section .cta-h {
  font-family: 'Lora', serif;
  font-weight: 600; font-style: italic;
  font-size: clamp(1.8rem,4vw,3rem);
  color: #fff; margin-bottom: 14px; line-height: 1.2;
}
.cv-cta-section .cta-sub {
  font-family: 'Noto Serif JP', serif;
  font-weight: 200; font-size: 0.9rem;
  color: rgba(255,255,255,0.8);
  max-width: 440px; margin: 0 auto 40px; line-height: 2;
}
.cv-btn-wrap { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }
.cv-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: var(--radius-btn);
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.85rem; font-weight: 500; letter-spacing: 0.08em;
  text-decoration: none; transition: all .2s; cursor: pointer; border: none;
}
.cv-btn-white { background: #fff; color: var(--accent); }
.cv-btn-white:hover { background: var(--accent-pale); box-shadow: 0 6px 20px rgba(0,0,0,0.14); transform: translateY(-2px); }
.cv-btn-outline { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.65); }
.cv-btn-outline:hover { background: rgba(255,255,255,0.12); transform: translateY(-2px); }

/* ── LAYOUT ── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 48px; }
@media(max-width:768px){ .container{ padding:0 24px; } }

/* ── HEADER ── */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: var(--paper);
  border-bottom: 1px solid var(--border);
  height: 62px;
  display: flex; align-items: center;
  padding: 0 48px; justify-content: space-between;
  transition: box-shadow 0.2s;
}
.site-header.scrolled { box-shadow: 0 2px 16px rgba(15,23,42,0.08); }
.site-logo {
  font-family: 'Lora', serif;
  font-weight: 600; font-style: italic;
  font-size: 1.15rem; letter-spacing: 0.02em;
  color: var(--ink); text-decoration: none;
}
.site-nav { display: flex; align-items: center; gap: 6px; }
.site-nav a {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.75rem; font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--mid); text-decoration: none;
  border: 1.5px solid var(--border);
  border-radius: 6px;
  padding: 6px 14px;
  background: var(--paper);
  transition: all 0.18s;
  white-space: nowrap;
}
.site-nav a:hover { color: var(--accent); border-color: var(--accent); background: var(--accent-pale); }
.site-nav a.active { color: var(--accent); border-color: var(--accent); background: var(--accent-pale); font-weight: 500; }
.nav-cta {
  border-color: var(--border) !important;
  color: var(--mid) !important;
  background: var(--paper) !important;
  border-radius: 6px !important;
  padding: 6px 14px !important;
  font-weight: 400 !important;
}
.nav-cta:hover { background: var(--accent-pale) !important; color: var(--accent) !important; border-color: var(--accent) !important; transform: translateY(-1px); }

/* ── BUTTONS ── */
.btn-ink {
  background: var(--ink); color: var(--paper);
  padding: 13px 36px; border-radius: var(--radius-btn);
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.82rem; font-weight: 500; letter-spacing: 0.1em;
  text-decoration: none; display: inline-flex; align-items: center; justify-content: center;
  min-height: 46px; transition: all 0.2s; border: none; cursor: pointer;
  box-shadow: 0 2px 8px rgba(15,23,42,0.15);
}
.btn-ink:hover { background: var(--accent); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(37,99,235,0.25); }
.btn-accent {
  background: var(--accent); color: #fff;
  padding: 13px 36px; border-radius: var(--radius-btn);
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.82rem; font-weight: 500; letter-spacing: 0.1em;
  text-decoration: none; display: inline-flex; align-items: center; justify-content: center;
  min-height: 46px; transition: all 0.2s; border: none; cursor: pointer;
  box-shadow: 0 2px 8px rgba(37,99,235,0.25);
}
.btn-accent:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(37,99,235,0.35); }
.btn-outline-accent {
  border: 1.5px solid var(--accent); color: var(--accent); background: transparent;
  padding: 12px 36px; border-radius: var(--radius-btn);
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.82rem; font-weight: 500; letter-spacing: 0.1em;
  text-decoration: none; display: inline-flex; align-items: center; justify-content: center;
  min-height: 46px; transition: all 0.2s;
}
.btn-outline-accent:hover { background: var(--accent); color: #fff; transform: translateY(-2px); }
.btn-outline-paper {
  border: 1.5px solid rgba(255,255,255,0.6); color: #fff; background: transparent;
  padding: 12px 36px; border-radius: var(--radius-btn);
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.82rem; font-weight: 500; letter-spacing: 0.1em;
  text-decoration: none; display: inline-flex; align-items: center; justify-content: center;
  min-height: 46px; transition: all 0.2s;
}
.btn-outline-paper:hover { background: #fff; color: var(--ink); transform: translateY(-2px); }
.link-italic {
  font-family: 'Lora', serif; font-style: italic; font-size: 1rem;
  color: var(--accent); text-decoration: none;
  border-bottom: 1px solid var(--accent); padding-bottom: 1px;
}

/* ── IMAGES ── */
.img-warm { filter: none; }
.img-warm-light { filter: none; }

/* ── FOOTER ── */
.site-footer {
  background: var(--footer-bg);
  padding: 56px 48px 32px;
}
.footer-grid {
  display: grid; grid-template-columns: 2.2fr 1fr 1fr 1fr;
  gap: 40px; margin-bottom: 40px;
}
.footer-logo {
  font-family: 'Lora', serif; font-style: italic; font-weight: 600;
  font-size: 1.1rem; color: #F1F5F9; text-decoration: none;
  display: block; margin-bottom: 10px;
}
.footer-tagline {
  font-family: 'Noto Serif JP', serif; font-weight: 300;
  font-size: 0.8rem; color: #64748B; line-height: 1.9;
}
.footer-sns {
  display: flex; gap: 16px; margin-top: 14px;
  flex-wrap: wrap;
}
.footer-sns a {
  font-family: 'Noto Sans JP', sans-serif; font-size: 0.72rem; font-weight: 300;
  color: #64748B; text-decoration: none; transition: color 0.15s;
  letter-spacing: 0.05em;
}
.footer-sns a:hover { color: #F1F5F9; }
.footer-h {
  font-family: 'Noto Sans JP', sans-serif; font-size: 0.7rem; font-weight: 500;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: #F1F5F9; margin-bottom: 14px;
  padding-bottom: 8px; border-bottom: 1px solid #1E293B;
}
.footer-links { list-style: none; display: flex; flex-direction: column; gap: 9px; }
.footer-links a {
  font-family: 'Noto Serif JP', serif; font-weight: 300;
  font-size: 0.83rem; color: #64748B; text-decoration: none; transition: color 0.15s;
}
.footer-links a:hover { color: #F1F5F9; }
.footer-bottom {
  border-top: 1px solid #1E293B; padding-top: 20px;
  display: flex; justify-content: space-between; align-items: center;
}
.footer-copy {
  font-family: 'Noto Sans JP', sans-serif; font-size: 0.7rem; font-weight: 300;
  color: #475569; letter-spacing: 0.06em;
}

/* ── BACK TO TOP ── */
#backToTop {
  position: fixed; bottom: 28px; right: 28px; z-index: 50;
  width: 44px; height: 44px; background: var(--accent); color: #fff;
  border: none; cursor: pointer; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transition: all 0.3s;
  box-shadow: 0 4px 14px rgba(37,99,235,0.3);
}
#backToTop:hover { background: var(--accent-hover); transform: translateY(-2px); }
#backToTop.show { opacity: 1; visibility: visible; }

/* ── MOBILE ── */
@media(max-width:900px){
  .site-header { padding: 0 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .site-footer { padding: 40px 24px 24px; }
}
@media(max-width:600px){
  .footer-grid { grid-template-columns: 1fr; }
}