/* =========================================================
   i-Fill LP — styles.css
   ブランド: navy #052464 / steel #4682b4 / 白背景・清潔感・洗練
   ========================================================= */

:root {
  --navy: #052464;
  --navy-700: #0a3186;
  --steel: #4682b4;
  --ink: #16213e;
  --muted: #5b6678;
  --line: #e6e9f0;
  --bg: #ffffff;
  --bg-soft: #f5f7fc;
  --bg-navy-tint: #eef2fb;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 10px 30px rgba(5, 36, 100, 0.08);
  --shadow-lg: 0 20px 50px rgba(5, 36, 100, 0.14);
  --maxw: 1080px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html { scroll-behavior: smooth; scroll-padding-top: 80px; }
html, body { overflow-x: hidden; }

body {
  font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  /* 日本語を文節で折り返す（単語の途中で切れないように）＋禁則処理 */
  word-break: auto-phrase;
  line-break: strict;
}

/* auto-phrase 非対応ブラウザ向けの段落・見出しの折り返し改善 */
.lead, .section-sub, .hero-sub, .section p, .feature-card p, .voice-text,
.step-card p, .faq-body p, .coverage p, .coverage-list li, .price-list li,
.section-title, .hero-title, .cta-title, .modal-lead {
  text-wrap: pretty;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.container.narrow { max-width: 760px; }
.center { text-align: center; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 700;
  font-size: 16px;
  line-height: 1;
  padding: 16px 28px;
  border-radius: 999px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease),
    background 0.2s var(--ease), color 0.2s var(--ease);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--navy); color: #fff; box-shadow: 0 8px 20px rgba(5, 36, 100, 0.25); }
.btn-primary:hover { background: var(--navy-700); box-shadow: 0 12px 26px rgba(5, 36, 100, 0.32); }
.btn-ghost { background: transparent; color: var(--navy); border-color: var(--navy); }
.btn-ghost:hover { background: var(--navy); color: #fff; }
.btn-light { background: #fff; color: var(--navy); box-shadow: var(--shadow); }
.btn-light:hover { box-shadow: var(--shadow-lg); }
.btn-lg { padding: 18px 36px; font-size: 17px; }
.btn-sm { padding: 11px 20px; font-size: 14px; }
.btn-block { display: flex; width: 100%; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 6px 20px rgba(5, 36, 100, 0.10);
  transition: border-color 0.3s, box-shadow 0.3s;
}
.site-header.scrolled { border-color: var(--line); box-shadow: 0 8px 24px rgba(5, 36, 100, 0.16); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }

.logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 900; }
.logo-text { font-size: 22px; letter-spacing: 0.5px; color: var(--navy); }
.logo-lockup { display: inline-flex; align-items: baseline; gap: 8px; line-height: 1; font-size: 22px; }
.logo-desc { font-weight: 700; color: var(--navy); letter-spacing: 0.2px; white-space: nowrap; }
.logo-sep { color: #c4ccdb; font-weight: 400; }
@media (max-width: 1040px) { .logo-desc, .logo-sep { display: none; } }
.logo-mark {
  width: 30px; height: 30px;
  background: url("icon.png") center / contain no-repeat;
  border-radius: 7px;
}

.nav { display: flex; align-items: center; gap: 28px; }
.nav > a { font-weight: 500; font-size: 15px; color: var(--ink); transition: color 0.2s; }
.nav > a:hover { color: var(--navy); }
.nav .btn { color: #fff; }
.nav .btn-primary { color: #fff; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--navy); border-radius: 2px; transition: transform 0.3s, opacity 0.3s; }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; padding: 84px 0 72px; }
.hero-bg { position: absolute; inset: 0; z-index: -1; background: var(--bg-navy-tint); }
.hero-bg::before, .hero-bg::after {
  content: ""; position: absolute; border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, rgba(70,130,180,0.30), rgba(5,36,100,0.12));
  filter: blur(2px);
}
.hero-bg::before { width: 460px; height: 460px; top: -120px; right: -120px; }
.hero-bg::after { width: 320px; height: 320px; bottom: -140px; left: -80px; opacity: 0.7; }

.hero-inner { position: relative; display: grid; grid-template-columns: 1fr 0.95fr; gap: 44px; align-items: center; }
.hero-inner > * { min-width: 0; }
.hero-text { text-align: left; }
.hero-text .hero-sub { margin-left: 0; margin-right: 0; }
.hero-text .hero-cta { justify-content: flex-start; }
.hero-text .hero-badges { justify-content: flex-start; }
.hero-eyebrow {
  display: inline-block; font-size: 13px; font-weight: 700; color: var(--navy);
  background: #fff; border: 1px solid var(--line); padding: 7px 16px; border-radius: 999px;
  box-shadow: var(--shadow); margin-bottom: 24px;
}
.hero-title { font-size: clamp(38px, 7.5vw, 68px); font-weight: 900; line-height: 1.12; color: var(--navy); letter-spacing: -1px; }
.hero-sub { margin: 22px auto 0; max-width: 620px; font-size: clamp(15px, 2.4vw, 18px); color: var(--muted); }
.hero-sub .nb { white-space: nowrap; }
.hero-sub strong { color: var(--ink); }

.hero-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 34px; }

.hero-proof {
  display: inline-flex; align-items: center; gap: 10px; flex-wrap: wrap;
  margin-top: 22px; padding: 9px 16px; border-radius: 999px;
  background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow);
  font-size: 14px; color: var(--ink); transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.hero-proof:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.hero-proof-stars { color: #f5a623; letter-spacing: 1px; font-size: 15px; }
.hero-proof-text strong { color: var(--navy); font-weight: 900; }
.hero-proof-rate { color: var(--muted); }
.hero-proof-src { font-size: 11px; color: var(--muted); border-left: 1px solid var(--line); padding-left: 10px; }

.hero-badges {
  list-style: none; display: flex; flex-wrap: wrap; gap: 10px 22px; justify-content: center;
  margin-top: 26px; font-size: 14px; font-weight: 500; color: var(--ink);
}
.hero-badges li { white-space: nowrap; }

/* ---------- Sections ---------- */
.section { padding: 84px 0; }
.section-title { font-size: clamp(24px, 4.5vw, 34px); font-weight: 900; color: var(--navy); line-height: 1.4; }
.section-title.center { text-align: center; }
.section-sub { color: var(--muted); margin-top: 12px; font-size: 16px; }
.lead { font-size: clamp(17px, 2.6vw, 20px); font-weight: 700; color: var(--ink); margin-bottom: 18px; }
.section p { color: var(--muted); margin-bottom: 14px; }

/* ---------- Problem ---------- */
.problem { background: var(--bg-soft); }
.problem .emphasis {
  margin-top: 24px; padding: 22px 24px; border-left: 4px solid var(--navy);
  background: #fff; border-radius: var(--radius-sm); color: var(--ink); font-weight: 500; box-shadow: var(--shadow);
}

/* ---------- Cards ---------- */
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }

/* ---------- Features ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 24px; margin-top: 44px; }
.feature-card { padding: 36px 32px; }
.feature-num { font-size: 40px; font-weight: 900; color: var(--steel); opacity: 0.5; line-height: 1; }
.feature-card h3 { font-size: 20px; color: var(--navy); margin: 14px 0 10px; }
.feature-card p { color: var(--muted); margin: 0; }

/* ---------- Coverage ---------- */
.coverage { background: var(--navy); color: #fff; }
.coverage .section-title { color: #fff; }
.coverage p { color: rgba(255, 255, 255, 0.82); }
.coverage-grid { display: grid; grid-template-columns: 320px 1fr; gap: 48px; align-items: center; }
.coverage-figure {
  text-align: center; padding: 40px 24px; border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.06); border: 1px solid rgba(255, 255, 255, 0.15);
}
.big-percent { font-size: 110px; font-weight: 900; line-height: 1; color: #fff; }
.big-percent span { font-size: 48px; }
.coverage-cap { color: rgba(255, 255, 255, 0.9) !important; font-weight: 700; margin-top: 8px; }
.coverage-list { list-style: none; margin: 18px 0; display: grid; gap: 10px; }
.coverage-list li { padding-left: 26px; position: relative; color: rgba(255, 255, 255, 0.9); }
.coverage-list li::before { content: "▶"; position: absolute; left: 0; color: var(--steel); font-size: 12px; top: 6px; }
.coverage-list b { color: #fff; }
.coverage .note { font-size: 14px; color: rgba(255, 255, 255, 0.6) !important; }

/* ---------- Security ---------- */
.security { background: var(--bg-soft); }
.lock-icon { font-size: 44px; margin-bottom: 8px; }

/* ---------- Demo video（ヒーロー右側） ---------- */
.hero-video-frame {
  width: 100%; max-width: none; margin-left: auto;
  border-radius: 16px; overflow: hidden;
  box-shadow: 0 14px 36px rgba(5, 36, 100, 0.13); border: 1px solid var(--line);
  background: #fff;
}
.demo-video { display: block; width: 100%; height: auto; }

/* ---------- Voices (testimonials) ---------- */
.voice-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; margin-top: 44px; }
.voice-card { padding: 30px 28px; display: flex; flex-direction: column; gap: 14px; text-align: left; }
.voice-stars { color: #f5a623; font-size: 17px; letter-spacing: 2px; }
.voice-stars .off { color: #d4dae6; }
.voice-text { color: var(--ink); margin: 0; line-height: 1.85; font-size: 15px; }
.voice-author { display: flex; align-items: center; gap: 12px; margin-top: auto; padding-top: 8px; }
.voice-avatar {
  width: 42px; height: 42px; border-radius: 50%; flex-shrink: 0;
  background: linear-gradient(135deg, #1f4ea0, var(--navy));
  color: #fff; font-weight: 900; font-size: 17px;
  display: flex; align-items: center; justify-content: center;
}
.voice-meta { font-size: 13px; color: var(--muted); font-weight: 700; line-height: 1.45; }

/* ---------- Contact ---------- */
.contact .lead { margin-bottom: 28px; }

/* ---------- Modal (お問い合わせ) ---------- */
.modal { position: fixed; inset: 0; z-index: 100; display: none; align-items: center; justify-content: center; padding: 24px; }
.modal.open { display: flex; }
.modal-overlay { position: absolute; inset: 0; background: rgba(5, 16, 40, 0.55); -webkit-backdrop-filter: blur(3px); backdrop-filter: blur(3px); }
.modal-card {
  position: relative; z-index: 1; width: 100%; max-width: 460px;
  background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-lg);
  padding: 36px 32px; text-align: left;
  animation: modalIn 0.3s var(--ease);
}
@keyframes modalIn { from { opacity: 0; transform: translateY(16px) scale(0.98); } to { opacity: 1; transform: none; } }
.modal-close { position: absolute; top: 12px; right: 16px; width: 36px; height: 36px; background: none; border: 0; font-size: 26px; line-height: 1; color: var(--muted); cursor: pointer; border-radius: 8px; }
.modal-close:hover { color: var(--navy); background: var(--bg-soft); }
.modal-title { font-size: 22px; font-weight: 900; color: var(--navy); }
.modal-lead { color: var(--muted); font-size: 14px; margin: 8px 0 22px; }
.contact-form { display: grid; gap: 15px; }
.field { display: grid; gap: 6px; }
.field span { font-size: 13px; font-weight: 700; color: var(--ink); }
.field input, .field textarea {
  width: 100%; font: inherit; font-size: 15px; padding: 11px 13px;
  border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--bg-soft); color: var(--ink);
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--steel); background: #fff; box-shadow: 0 0 0 3px rgba(70, 130, 180, 0.16); }
.field textarea { resize: vertical; }
.contact-form .btn { margin-top: 4px; }
.form-consent { margin: 10px 0 0; font-size: 12px; color: var(--muted); line-height: 1.6; text-align: center; }
.form-consent a { color: var(--navy); text-decoration: underline; }
.form-status { margin: 6px 0 0; font-size: 14px; min-height: 0; }
.form-status.ok { color: #1a7f4b; }
.form-status.err { color: #c0392b; }

/* ---------- Steps ---------- */
.step-grid { list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 44px; counter-reset: step; }
@media (max-width: 900px) { .step-grid { grid-template-columns: repeat(2, 1fr); } }
.step-card { padding: 32px 26px; text-align: center; }
.step-no {
  display: inline-flex; align-items: center; justify-content: center;
  width: 48px; height: 48px; border-radius: 50%; background: var(--bg-navy-tint);
  color: var(--navy); font-weight: 900; font-size: 20px; margin-bottom: 14px;
}
.step-card h3 { font-size: 17px; color: var(--navy); margin-bottom: 8px; }
.step-card p { font-size: 14px; color: var(--muted); margin: 0; }

/* ---------- Pricing ---------- */
.price-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 44px; max-width: 760px; margin-left: auto; margin-right: auto; }
.price-card { padding: 36px 32px; position: relative; display: flex; flex-direction: column; }
.price-card.featured { border-color: var(--navy); border-width: 2px; box-shadow: var(--shadow-lg); }
.price-ribbon {
  position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
  background: var(--navy); color: #fff; font-size: 12px; font-weight: 700;
  padding: 6px 16px; border-radius: 999px; white-space: nowrap;
}
.price-name { font-size: 16px; font-weight: 700; color: var(--muted); }
.price-amount { font-size: 44px; font-weight: 900; color: var(--navy); margin: 8px 0 4px; line-height: 1; }
.price-amount .yen { font-size: 22px; }
.price-amount .price-note { font-size: 14px; color: var(--muted); font-weight: 700; }
.price-list { list-style: none; margin: 18px 0 26px; display: grid; gap: 10px; }
.price-list li { padding-left: 26px; position: relative; color: var(--ink); font-size: 15px; }
.price-list li::before { content: "✓"; position: absolute; left: 0; color: var(--steel); font-weight: 900; }
.price-card .btn { margin-top: auto; }

/* ---------- FAQ ---------- */
.faq-list { margin-top: 40px; display: grid; gap: 12px; }
.faq-item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm); overflow: hidden; }
.faq-item summary {
  list-style: none; cursor: pointer; padding: 20px 52px 20px 22px; font-weight: 700; color: var(--navy);
  position: relative; font-size: 15px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+"; position: absolute; right: 22px; top: 50%; transform: translateY(-50%);
  font-size: 22px; font-weight: 400; color: var(--steel); transition: transform 0.3s;
}
.faq-item[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq-body { padding: 0 22px 20px; }
.faq-body p { color: var(--muted); margin: 0; font-size: 15px; }

/* ---------- Final CTA ---------- */
.final-cta { background: linear-gradient(135deg, var(--navy), var(--navy-700)); color: #fff; }
.cta-title { font-size: clamp(24px, 5vw, 36px); font-weight: 900; }
.cta-sub { color: rgba(255, 255, 255, 0.82); margin: 14px 0 30px; }

/* ---------- Footer ---------- */
.site-footer { background: #0a1430; color: rgba(255, 255, 255, 0.7); padding: 48px 0 28px; }
.footer-inner { display: flex; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.footer-brand .logo-text { color: #fff; font-size: 20px; font-weight: 900; }
.footer-brand .logo-lockup { font-size: 20px; }
.footer-brand .logo-desc { color: rgba(255, 255, 255, 0.85); }
.footer-brand .logo-sep { color: rgba(255, 255, 255, 0.3); }
.footer-brand { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.footer-tag { width: 100%; font-size: 13px; color: rgba(255, 255, 255, 0.55); margin-top: 6px; }
.footer-nav { display: flex; gap: 22px; flex-wrap: wrap; align-items: center; font-size: 14px; }
.footer-nav a { color: rgba(255, 255, 255, 0.7); transition: color 0.2s; }
.footer-nav a:hover { color: #fff; }
.footer-disclaimer { max-width: var(--maxw); margin: 28px auto 0; padding: 0 24px; font-size: 12px; color: rgba(255, 255, 255, 0.4); text-align: center; line-height: 1.7; }
.copyright { text-align: center; font-size: 12px; color: rgba(255, 255, 255, 0.4); margin-top: 14px; }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .coverage-grid { grid-template-columns: 1fr; gap: 28px; }
  .coverage-figure { max-width: 320px; margin: 0 auto; }
}

@media (max-width: 720px) {
  .nav {
    position: fixed; inset: 68px 0 auto 0; flex-direction: column; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line); padding: 8px 24px 20px;
    transform: translateY(-120%); transition: transform 0.35s var(--ease); box-shadow: var(--shadow);
  }
  .nav.open { transform: translateY(0); }
  .nav > a { width: 100%; padding: 14px 0; border-bottom: 1px solid var(--line); }
  .nav .btn { width: 100%; margin-top: 12px; border-radius: var(--radius-sm); }
  .nav-toggle { display: flex; }
  .nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .section { padding: 60px 0; }
  .feature-grid, .step-grid, .price-grid, .voice-grid { grid-template-columns: 1fr; }
  .hero { padding: 56px 0 52px; }
}

/* ---------- Legal pages (privacy / terms / tokushoho) ---------- */
.legal-hero { background: var(--bg-navy-tint); padding: 56px 0 40px; text-align: center; }
.legal-hero h1 { font-size: clamp(26px, 5vw, 36px); color: var(--navy); font-weight: 900; }
.legal-meta { color: var(--muted); font-size: 14px; margin-top: 10px; }

.legal-content { padding: 56px 0 72px; }
.legal-content h2 { font-size: 17px; color: var(--navy); margin: 34px 0 10px; font-weight: 700; }
.legal-content h2:first-child { margin-top: 0; }
.legal-content p { color: var(--ink); margin-bottom: 14px; }
.legal-content ul { margin: 0 0 16px; padding-left: 1.4em; color: var(--ink); }
.legal-content li { margin-bottom: 6px; }
.legal-content .intro { color: var(--muted); }

.tokusho dl { margin: 0; }
.tokusho .dl-row { display: grid; grid-template-columns: 220px 1fr; gap: 4px 24px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.tokusho .dl-row dt { font-weight: 700; color: var(--navy); }
.tokusho .dl-row dd { color: var(--ink); margin: 0; }

.back-home { display: inline-flex; align-items: center; gap: 6px; color: var(--navy); font-weight: 700; font-size: 14px; }
.back-home:hover { color: var(--navy-700); }

@media (max-width: 640px) {
  .tokusho .dl-row { grid-template-columns: 1fr; gap: 2px; }
}

/* ---------- Hero visual / mockup ---------- */
.hero-visual { position: relative; }
.mockup { position: relative; background: #fff; border-radius: 18px; box-shadow: var(--shadow-lg); border: 1px solid var(--line); overflow: hidden; width: 100%; max-width: 440px; margin-left: auto; }
.mockup-bar { display: flex; align-items: center; gap: 7px; padding: 12px 14px; background: #eef1f7; border-bottom: 1px solid var(--line); }
.mockup-bar .dot { width: 10px; height: 10px; border-radius: 50%; background: #cdd6e6; }
.mockup-bar .dot.r { background: #ff5f56; }
.mockup-bar .dot.y { background: #ffbd2e; }
.mockup-bar .dot.g { background: #27c93f; }
.mockup-url { margin-left: 8px; font-size: 11px; color: var(--muted); background: #fff; border: 1px solid var(--line); border-radius: 6px; padding: 5px 12px; flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mockup-body { padding: 20px 20px 72px; }
.mockup-title { font-size: 13px; font-weight: 700; color: var(--navy); margin-bottom: 16px; }
.mock-field { display: grid; grid-template-columns: 92px 1fr; gap: 10px; align-items: center; margin-bottom: 10px; }
.mock-field label { font-size: 11px; color: var(--muted); }
.mock-input { font-size: 12px; color: var(--ink); background: var(--bg-soft); border: 1px solid var(--line); border-radius: 8px; padding: 9px 11px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mock-input.filled { background: var(--bg-navy-tint); border-color: #c5d4f2; position: relative; padding-right: 28px; }
.mock-input.filled::after { content: "✓"; position: absolute; right: 9px; top: 50%; transform: translateY(-50%); color: var(--steel); font-weight: 900; font-size: 11px; }
.mock-fab { position: absolute; left: 50%; bottom: 16px; transform: translateX(-50%); display: inline-flex; align-items: center; gap: 8px; background: var(--navy); color: #fff; border: 0; border-radius: 999px; padding: 12px 22px; font-size: 13px; font-weight: 700; box-shadow: 0 12px 26px rgba(5, 36, 100, 0.35); white-space: nowrap; }
.mock-fab .mark { width: 9px; height: 9px; border-radius: 50%; background: #fff; }

@media (prefers-reduced-motion: no-preference) {
  .mock-input.filled { animation: fillIn 0.5s var(--ease) both; }
  .mock-field:nth-of-type(1) .filled { animation-delay: 0.2s; }
  .mock-field:nth-of-type(2) .filled { animation-delay: 0.38s; }
  .mock-field:nth-of-type(3) .filled { animation-delay: 0.56s; }
  .mock-field:nth-of-type(4) .filled { animation-delay: 0.74s; }
  .mock-field:nth-of-type(5) .filled { animation-delay: 0.92s; }
  .mock-fab { animation: fabIn 0.5s var(--ease) 1.15s both; }
}
@keyframes fillIn { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: none; } }
@keyframes fabIn { from { opacity: 0; transform: translate(-50%, 10px); } to { opacity: 1; transform: translate(-50%, 0); } }

/* ---------- Hero responsive stacking ---------- */
@media (max-width: 880px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-text { text-align: center; }
  .hero-text .hero-sub { margin-left: auto; margin-right: auto; }
  .hero-text .hero-cta, .hero-text .hero-badges { justify-content: center; }
  .hero-video-frame { margin: 0 auto; }
}

/* =========================================================
   Enterprise polish — 配色・グラデーションで立体感とリッチさ
   ========================================================= */

/* プライマリボタン：単色 → グラデーション */
.btn-primary {
  background: linear-gradient(135deg, #2358ad 0%, var(--navy) 72%);
  box-shadow: 0 10px 24px rgba(5, 36, 100, 0.30);
}
.btn-primary:hover {
  background: linear-gradient(135deg, #2c64bd 0%, var(--navy-700) 72%);
  box-shadow: 0 16px 32px rgba(5, 36, 100, 0.40);
}

/* ヒーロー背景：上から下へのソフトグラデ＋グロー強化 */
.hero-bg { background: linear-gradient(180deg, #e7edfb 0%, #f3f6fc 55%, #ffffff 100%); }
.hero-bg::before, .hero-bg::after {
  background: radial-gradient(circle at 30% 30%, rgba(70, 130, 180, 0.40), rgba(31, 78, 160, 0.08));
}

/* 見出し・数字をグラデーションテキストに */
.hero-title,
.feature-num,
.price-amount,
.big-percent {
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.hero-title { background-image: linear-gradient(120deg, #0a3186 0%, #052464 48%, #1f4ea0 100%); }
.feature-num { background-image: linear-gradient(135deg, #5a93c4 0%, #0a3186 100%); }
.price-amount { background-image: linear-gradient(120deg, #052464 0%, #1f4ea0 100%); }
.price-amount .price-note { -webkit-text-fill-color: var(--muted); color: var(--muted); }
.big-percent { background-image: linear-gradient(180deg, #ffffff 0%, #b6cff0 100%); }

/* セクション背景：単色 → 微グラデーション */
.problem { background: linear-gradient(180deg, #ffffff 0%, #eaf0fb 100%); }
.security { background: linear-gradient(180deg, #eef2fb 0%, #f8fafe 100%); }
.coverage { background: linear-gradient(140deg, #0c378f 0%, #052464 58%, #03174a 100%); }
.final-cta { background: linear-gradient(135deg, #1f4ea0 0%, var(--navy) 52%, #03174a 100%); }

/* ステップ番号：塗りつぶしグラデ円 */
.step-no {
  background: linear-gradient(135deg, #2358ad, #052464);
  color: #fff;
  box-shadow: 0 6px 16px rgba(5, 36, 100, 0.28);
}

/* おすすめ料金カード：微グラデ背景 */
.price-card.featured { background: linear-gradient(180deg, #ffffff 0%, #f3f7fd 100%); }

/* カードのホバーで浮き上がる（高級感） */
.feature-card, .voice-card, .step-card, .price-card {
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.feature-card:hover, .voice-card:hover, .step-card:hover, .price-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}