/* ==========================================================================
   情報資産を、知識で守る。 - Proposal Landing Page
   ========================================================================== */

:root{
  --navy-950:#060b18;
  --navy-900:#0a1330;
  --navy-800:#0f1c40;
  --navy-700:#152651;
  --navy-600:#1d3268;
  --blue-500:#2d5ee0;
  --blue-400:#4f7dff;
  --gold-400:#d4a94b;
  --gold-300:#e8c876;
  --red-500:#d64545;
  --ink-900:#101526;
  --ink-700:#3a4256;
  --ink-500:#6b7488;
  --paper:#f6f7fb;
  --white:#ffffff;
  --line:#e4e7f0;
  --shadow-lg:0 24px 60px -20px rgba(10,19,48,0.35);
  --shadow-sm:0 10px 30px -12px rgba(10,19,48,0.18);
  --radius-lg:20px;
  --radius-md:14px;
  --font: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--font);
  color:var(--ink-900);
  background:var(--paper);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
.sp-only{ display:none; }

/* ---------- Reveal animation ---------- */
.reveal{
  opacity:0;
  transform:translateY(22px);
  transition:opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1);
}
.reveal.in-view{ opacity:1; transform:translateY(0); }

/* ---------- Header ---------- */
.site-header{
  position:sticky; top:0; z-index:100;
  background:rgba(10,19,48,0.92);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid rgba(255,255,255,0.08);
}
.header-inner{
  max-width:1180px; margin:0 auto;
  display:flex; align-items:center; justify-content:space-between;
  padding:12px 24px;
}
.brand{ display:flex; align-items:center; gap:12px; }
.brand-mark{
  width:42px; height:42px; border-radius:10px;
  object-fit:cover;
  flex-shrink:0;
}
.brand-mark.small{ width:38px; height:38px; }
.brand-text{ display:flex; flex-direction:column; line-height:1.25; }
.brand-name{ color:#fff; font-weight:700; font-size:15px; letter-spacing:.02em; }
.brand-en{ color:#8fa0d1; font-size:11px; letter-spacing:.04em; }

.main-nav{ display:flex; gap:28px; }
.main-nav a{
  color:#c7d1ee; font-size:14px; font-weight:500;
  position:relative; padding:4px 0;
  transition:color .2s;
}
.main-nav a:hover{ color:#fff; }

.header-cta{
  display:flex; align-items:center; gap:10px;
  background:var(--gold-400); color:var(--navy-950);
  padding:9px 18px; border-radius:999px; font-weight:700;
  transition:transform .2s, box-shadow .2s;
  flex-shrink:0;
}
.header-cta:hover{ transform:translateY(-1px); box-shadow:0 8px 20px -6px rgba(212,169,75,0.6); }
.header-cta i{ font-size:16px; }
.header-cta-text{ display:flex; flex-direction:column; line-height:1.15; }
.header-cta-label{ font-size:10px; font-weight:600; }
.header-cta-num{ font-size:14px; font-weight:800; letter-spacing:.01em; }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:10px;
  padding:15px 28px; border-radius:999px; font-weight:700; font-size:15px;
  transition:transform .2s, box-shadow .2s, background .2s, color .2s;
  border:2px solid transparent; cursor:pointer;
}
.btn-primary{
  background:linear-gradient(120deg,var(--gold-300),var(--gold-400));
  color:var(--navy-950);
  box-shadow:0 14px 30px -10px rgba(212,169,75,0.55);
}
.btn-primary:hover{ transform:translateY(-2px); box-shadow:0 18px 34px -10px rgba(212,169,75,0.65); }
.btn-ghost{
  background:transparent; color:#fff; border-color:rgba(255,255,255,0.35);
}
.btn-ghost:hover{ border-color:#fff; background:rgba(255,255,255,0.08); }
.btn-outline{
  background:transparent; color:var(--navy-900); border-color:var(--navy-900);
}
.btn-outline:hover{ background:var(--navy-900); color:#fff; }
.btn-lg{ padding:18px 34px; font-size:16px; }

/* Pulse attention CTA */
.btn-pulse{ position:relative; animation:btnPulse 2.4s ease-in-out infinite; }
@keyframes btnPulse{
  0%,100%{ box-shadow:0 14px 30px -10px rgba(212,169,75,0.55); }
  50%{ box-shadow:0 14px 34px -6px rgba(212,169,75,0.85), 0 0 0 6px rgba(212,169,75,0.12); }
}
@media (prefers-reduced-motion: reduce){
  .btn-pulse{ animation:none; }
}

/* ---------- Hero ---------- */
.hero{
  position:relative; overflow:hidden;
  background:radial-gradient(ellipse at 30% -10%, #16265a 0%, var(--navy-900) 45%, var(--navy-950) 100%);
  color:#fff;
  padding:120px 24px 100px;
}
.hero-bg{ position:absolute; inset:0; z-index:0; }
.hero-grid{
  position:absolute; inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size:48px 48px;
  mask-image:linear-gradient(to bottom, rgba(0,0,0,0.9), transparent 80%);
}
.hero-glow{
  position:absolute; top:-200px; right:-160px; width:600px; height:600px;
  background:radial-gradient(circle, rgba(79,125,255,0.35), transparent 70%);
  filter:blur(10px);
}
.hero-inner{ position:relative; z-index:1; max-width:920px; margin:0 auto; text-align:center; }
.hero-eyebrow{
  display:inline-block; font-size:13px; letter-spacing:.06em;
  color:var(--gold-300); font-weight:600; margin:0 0 22px;
  border:1px solid rgba(212,169,75,0.4); padding:7px 18px; border-radius:999px;
  background:rgba(212,169,75,0.08);
}
.hero-title{
  font-size:clamp(38px,6vw,64px); font-weight:900; letter-spacing:.02em;
  margin:0 0 18px; line-height:1.35;
}
.hero-title-accent{
  background:linear-gradient(120deg,var(--gold-300),#fff2cf);
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.hero-sub{ font-size:clamp(15px,2.4vw,20px); color:#c7d1ee; margin:0 0 30px; font-weight:500; }
.hero-tags{
  display:flex; flex-wrap:wrap; justify-content:center; gap:10px;
  list-style:none; padding:0; margin:0 0 30px;
}
.hero-tags li{
  font-size:12px; letter-spacing:.05em; font-weight:700;
  color:#9db1e8; border:1px solid rgba(157,177,232,0.35);
  padding:6px 14px; border-radius:999px;
}
.hero-lead{ font-size:16px; color:#dbe2f7; max-width:680px; margin:0 auto 24px; }
.hero-usp{
  display:inline-flex; align-items:center; gap:10px; font-size:14px; font-weight:700;
  color:var(--navy-950); background:linear-gradient(120deg,var(--gold-300),var(--gold-400));
  padding:10px 22px; border-radius:999px; margin:0 0 40px;
}
.hero-usp i{ font-size:15px; }
.hero-actions{ display:flex; gap:16px; justify-content:center; flex-wrap:wrap; margin-bottom:16px; }
.hero-alt-contact{ font-size:13px; color:#9db1e8; }
.hero-alt-contact a{ color:var(--gold-300); font-weight:700; text-decoration:underline; }

/* ---------- Section common ---------- */
.section{ padding:96px 24px; }
.section-inner{ max-width:1080px; margin:0 auto; }
.section-tag{
  font-size:13px; font-weight:800; letter-spacing:.12em; color:var(--blue-500);
  text-align:center; margin:0 0 14px;
}
.section-tag.alert{ color:var(--red-500); }
.section-tag.light{ color:var(--gold-300); }
.section-title{
  font-size:clamp(26px,4vw,38px); font-weight:800; text-align:center;
  margin:0 0 20px; letter-spacing:.01em; color:var(--ink-900);
}
.section-title.light{ color:#fff; }
.section-lead{
  text-align:center; color:var(--ink-500); font-size:16px;
  max-width:640px; margin:0 auto 56px;
}
.section-lead.light{ color:#c7d1ee; }

/* ---------- Issues ---------- */
.issues{ background:var(--white); }
.issue-grid{
  display:grid; grid-template-columns:repeat(4,1fr); gap:24px; margin-bottom:48px;
}
.issue-card{
  background:var(--paper); border:1px solid var(--line);
  border-radius:var(--radius-lg); padding:32px 24px; text-align:center;
  transition:transform .25s, box-shadow .25s;
}
.issue-card:hover{ transform:translateY(-6px); box-shadow:var(--shadow-sm); }
.issue-icon{
  width:64px; height:64px; border-radius:50%; margin:0 auto 18px;
  display:flex; align-items:center; justify-content:center;
  background:linear-gradient(145deg,var(--navy-700),var(--navy-900));
  color:var(--gold-300); font-size:24px;
}
.issue-card h3{ font-size:17px; margin:0 0 10px; color:var(--ink-900); }
.issue-card p{ font-size:14px; color:var(--ink-500); margin:0; }
.issue-conclusion{
  text-align:center; font-size:clamp(19px,2.6vw,26px); font-weight:700; color:var(--ink-900);
}
.issue-conclusion span{ color:var(--blue-500); }

/* ---------- Risk Awareness ---------- */
.risk{ background:var(--white); }
.risk-grid{
  display:grid; grid-template-columns:1.1fr 1fr; gap:36px; align-items:start;
}
.risk-figure{
  margin:0; border-radius:var(--radius-lg); overflow:hidden; box-shadow:var(--shadow-lg);
}
.risk-figure img{ width:100%; height:auto; }
.risk-points{ display:flex; flex-direction:column; gap:18px; }
.risk-point{
  display:flex; gap:16px; align-items:flex-start; background:var(--paper);
  border:1px solid var(--line); border-radius:var(--radius-md); padding:20px 22px;
}
.risk-point i{
  flex-shrink:0; width:38px; height:38px; border-radius:10px;
  display:flex; align-items:center; justify-content:center; font-size:16px;
  background:rgba(214,69,69,0.1); color:var(--red-500);
}
.risk-point strong{ display:block; font-size:14.5px; margin-bottom:6px; color:var(--ink-900); }
.risk-point p{ font-size:13.5px; color:var(--ink-500); margin:0; line-height:1.7; }
.risk-point.highlight{
  background:var(--navy-900); border-color:var(--navy-900);
}
.risk-point.highlight i{ background:rgba(212,169,75,0.15); color:var(--gold-300); }
.risk-point.highlight strong{ color:var(--gold-300); }
.risk-point.highlight p{ color:#c7d1ee; }

/* ---------- Equipment ---------- */
.equipment{ background:var(--paper); }
.equipment-figure{
  margin:0 0 48px; border-radius:var(--radius-lg); overflow:hidden; box-shadow:var(--shadow-lg);
}
.equipment-figure img{ width:100%; height:auto; }
.equipment-grid{
  display:grid; grid-template-columns:1fr 1fr; gap:24px; margin-bottom:28px;
}
.equipment-card{
  background:#fff; border:1px solid var(--line); border-radius:var(--radius-lg);
  padding:32px; box-shadow:var(--shadow-sm);
}
.equipment-head{ display:flex; gap:16px; align-items:center; margin-bottom:16px; }
.equipment-head i{
  flex-shrink:0; width:52px; height:52px; border-radius:12px;
  display:flex; align-items:center; justify-content:center; font-size:22px;
  background:linear-gradient(145deg,var(--navy-700),var(--navy-900)); color:var(--gold-300);
}
.equipment-head h3{ font-size:17px; margin:0 0 4px; color:var(--ink-900); }
.equipment-head span{ font-size:13px; color:var(--ink-500); font-weight:600; }
.equipment-card > p{ font-size:14px; color:var(--ink-700); margin:0 0 18px; }
.equipment-list{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:10px; }
.equipment-list li{ display:flex; gap:10px; align-items:flex-start; font-size:13.5px; color:var(--ink-700); line-height:1.6; }
.equipment-list i{ color:var(--blue-500); margin-top:3px; flex-shrink:0; }
.equipment-onsite{
  display:flex; gap:16px; align-items:flex-start; background:var(--navy-900);
  border-radius:var(--radius-md); padding:26px 28px; color:#fff;
}
.equipment-onsite i{ color:var(--gold-300); font-size:22px; margin-top:2px; flex-shrink:0; }
.equipment-onsite p{ font-size:14.5px; color:#dbe2f7; margin:0; line-height:1.8; }
.equipment-onsite strong{ color:var(--gold-300); }

/* ---------- Case Study ---------- */
.case{ background:linear-gradient(180deg,#fff5f5,#fdf7f7); }
.case-subtitle{
  text-align:center; font-size:clamp(20px,3vw,26px); font-weight:800; color:var(--navy-900);
  margin:0 0 10px;
}
.case-desc{ text-align:center; color:var(--ink-500); font-size:14px; margin:0 0 40px; }

.stat-grid{
  display:grid; grid-template-columns:repeat(4,1fr); gap:20px; margin-bottom:44px;
}
.stat-card{
  background:#fff; border:1px solid #f3d9d9; border-radius:var(--radius-lg);
  padding:28px 16px; text-align:center; box-shadow:var(--shadow-sm);
}
.stat-num{
  display:block; font-size:clamp(26px,4vw,34px); font-weight:900; color:var(--red-500);
  margin-bottom:8px;
}
.stat-num small{ font-size:14px; font-weight:700; margin-left:2px; }
.stat-label{ display:block; font-size:14px; font-weight:700; color:var(--ink-900); margin-bottom:6px; }
.stat-note{ display:block; font-size:12px; color:var(--ink-500); }

.case-quote{
  max-width:760px; margin:0 auto 48px; padding:32px 36px;
  background:#fff; border-left:4px solid var(--red-500);
  border-radius:var(--radius-md); box-shadow:var(--shadow-sm);
}
.case-quote i{ color:#f0b8b8; font-size:22px; margin-bottom:10px; display:block; }
.case-quote p{ font-size:15px; color:var(--ink-700); margin:0 0 14px; line-height:1.9; }
.case-quote cite{ font-size:12px; color:var(--ink-500); }

.prevent-box{
  background:var(--navy-900); border-radius:var(--radius-lg); padding:40px;
  color:#fff;
}
.prevent-box h3{
  font-size:19px; text-align:center; margin:0 0 28px; color:var(--gold-300);
  display:flex; align-items:center; justify-content:center; gap:10px;
}
.prevent-list{ list-style:none; margin:0; padding:0; display:grid; grid-template-columns:repeat(2,1fr); gap:22px; }
.prevent-list li{ display:flex; gap:16px; align-items:flex-start; }
.prevent-list i{
  flex-shrink:0; width:42px; height:42px; border-radius:10px;
  background:rgba(212,169,75,0.15); color:var(--gold-300);
  display:flex; align-items:center; justify-content:center; font-size:17px;
}
.prevent-list strong{ display:block; font-size:15px; margin-bottom:6px; color:#fff; }
.prevent-list p{ font-size:13.5px; color:#b9c3e2; margin:0; line-height:1.75; }

/* ---------- Solution ---------- */
.solution{
  background:radial-gradient(ellipse at 70% 0%, #16265a 0%, var(--navy-950) 60%);
  color:#fff;
}
.solution-grid{
  display:grid; grid-template-columns:repeat(5,1fr); gap:18px;
}
.solution-card{
  background:rgba(255,255,255,0.05); border:1px solid rgba(255,255,255,0.1);
  border-radius:var(--radius-lg); padding:30px 20px; text-align:center;
  position:relative; transition:transform .25s, background .25s;
}
.solution-card:hover{ transform:translateY(-6px); background:rgba(255,255,255,0.09); }
.solution-num{
  position:absolute; top:14px; right:18px; font-size:12px; font-weight:800; color:rgba(255,255,255,0.25);
}
.solution-card i{ font-size:30px; color:var(--gold-300); margin-bottom:16px; }
.solution-card h3{ font-size:16px; margin:0 0 10px; display:flex; align-items:center; justify-content:center; gap:8px; flex-wrap:wrap; }
.solution-card p{ font-size:13px; color:#b9c3e2; margin:0; line-height:1.7; }
.solution-tag-option{
  font-size:10px; font-weight:700; color:var(--navy-950);
  background:var(--gold-300); padding:3px 9px; border-radius:999px;
  letter-spacing:.02em;
}

/* ---------- Trust ---------- */
.trust{ background:var(--white); }
.trust-grid{
  display:grid; grid-template-columns:repeat(4,1fr); gap:24px; margin-bottom:44px;
}
.trust-item{ text-align:center; }
.trust-num{
  display:block; font-size:clamp(30px,4vw,40px); font-weight:900; color:var(--blue-500);
  margin-bottom:10px;
}
.trust-num small{ font-size:14px; font-weight:700; margin-left:2px; color:var(--ink-700); }
.trust-item p{ font-size:13.5px; color:var(--ink-500); margin:0; }
.trust-note{
  display:flex; gap:16px; align-items:flex-start; max-width:800px; margin:0 auto;
  background:var(--paper); border:1px solid var(--line); border-radius:var(--radius-md);
  padding:24px 28px;
}
.trust-note i{ color:var(--blue-500); font-size:20px; margin-top:2px; }
.trust-note p{ font-size:14px; color:var(--ink-700); margin:0; }

/* ---------- Flow ---------- */
.flow{ background:var(--paper); }
.flow-steps{
  display:grid; grid-template-columns:repeat(5,1fr); gap:18px;
  position:relative;
}
.flow-step{
  background:#fff; border:1px solid var(--line); border-radius:var(--radius-lg);
  padding:30px 18px; text-align:center; position:relative;
}
.flow-step-num{
  display:flex; align-items:center; justify-content:center;
  width:38px; height:38px; border-radius:50%; margin:0 auto 16px;
  background:linear-gradient(145deg,var(--navy-700),var(--navy-900)); color:var(--gold-300);
  font-weight:800; font-size:16px;
}
.flow-step h3{ font-size:15px; margin:0 0 8px; color:var(--ink-900); }
.flow-step p{ font-size:12.5px; color:var(--ink-500); margin:0; line-height:1.7; }

/* ---------- CTA final ---------- */
.cta-final{
  background:linear-gradient(120deg,var(--navy-950),var(--navy-800));
  color:#fff; text-align:center;
}
.cta-inner h2{ font-size:clamp(24px,3.6vw,34px); margin:0 0 16px; font-weight:800; }
.cta-inner p{ font-size:15.5px; color:#c7d1ee; max-width:640px; margin:0 auto 36px; }
.cta-actions{ display:flex; gap:18px; justify-content:center; flex-wrap:wrap; margin-bottom:24px; }
.cta-final .btn-outline{ color:#fff; border-color:rgba(255,255,255,0.5); }
.cta-final .btn-outline:hover{ background:#fff; color:var(--navy-900); }
.cta-note{ font-size:13px; color:#8fa0d1; }

/* ---------- Inline CTA Banner (repeated conversion points) ---------- */
.cta-banner{
  margin-top:48px;
  display:flex; align-items:center; justify-content:space-between; gap:24px;
  background:linear-gradient(120deg,var(--navy-900),var(--navy-800));
  border-radius:var(--radius-lg); padding:30px 36px;
  box-shadow:var(--shadow-lg);
}
.cta-banner-text h3{ color:#fff; font-size:18px; margin:0 0 8px; }
.cta-banner-text p{ color:#c7d1ee; font-size:13.5px; margin:0; }
.cta-banner .btn{ flex-shrink:0; white-space:nowrap; }

/* ---------- Sticky floating CTA ---------- */
.sticky-cta{
  position:fixed; right:24px; bottom:24px; z-index:200;
  display:flex; align-items:center; gap:10px;
  background:linear-gradient(120deg,var(--gold-300),var(--gold-400));
  color:var(--navy-950); font-weight:800; font-size:14px;
  padding:16px 22px; border-radius:999px;
  box-shadow:0 16px 34px -8px rgba(212,169,75,0.65);
  animation:btnPulse 2.4s ease-in-out infinite;
  transition:transform .2s;
}
.sticky-cta:hover{ transform:translateY(-2px) scale(1.03); }
.sticky-cta i{ font-size:16px; }
@media (prefers-reduced-motion: reduce){
  .sticky-cta{ animation:none; }
}

/* ---------- Footer ---------- */
.site-footer{ background:var(--navy-950); color:#8fa0d1; padding:40px 24px; }
.footer-inner{
  max-width:1080px; margin:0 auto; display:flex; align-items:center; justify-content:space-between;
  flex-wrap:wrap; gap:20px; padding-bottom:24px; border-bottom:1px solid rgba(255,255,255,0.08);
}
.footer-brand{ display:flex; align-items:center; gap:12px; }
.footer-name{ color:#fff; font-weight:700; font-size:15px; margin:0; }
.footer-en{ font-size:11px; margin:2px 0 0; }
.footer-links{ display:flex; gap:24px; flex-wrap:wrap; align-items:center; }
.footer-links a{ font-size:13px; display:flex; align-items:center; gap:8px; transition:color .2s; }
.footer-links a:hover{ color:#fff; }
.footer-link-cta{
  background:var(--gold-400); color:var(--navy-950) !important; font-weight:700;
  padding:9px 16px; border-radius:999px;
}
.footer-link-cta:hover{ color:var(--navy-950) !important; opacity:.9; }
.footer-copy{ text-align:center; font-size:12px; margin:20px auto 0; max-width:1080px; }
.cta-note-tel{ color:var(--gold-300); font-weight:700; text-decoration:underline; }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1024px){
  .issue-grid{ grid-template-columns:repeat(2,1fr); }
  .stat-grid{ grid-template-columns:repeat(2,1fr); }
  .solution-grid{ grid-template-columns:repeat(3,1fr); }
  .trust-grid{ grid-template-columns:repeat(2,1fr); }
  .flow-steps{ grid-template-columns:repeat(3,1fr); }
  .prevent-list{ grid-template-columns:1fr; }
  .risk-grid{ grid-template-columns:1fr; }
  .equipment-grid{ grid-template-columns:1fr; }
}

@media (max-width: 720px){
  .sp-only{ display:inline; }
  .main-nav{ display:none; }
  .header-cta-text{ display:none; }
  .header-cta{ padding:10px 14px; }
  .hero{ padding:88px 20px 64px; }
  .section{ padding:64px 20px; }
  .issue-grid{ grid-template-columns:1fr; }
  .stat-grid{ grid-template-columns:repeat(2,1fr); }
  .solution-grid{ grid-template-columns:1fr 1fr; }
  .trust-grid{ grid-template-columns:1fr 1fr; }
  .flow-steps{ grid-template-columns:1fr; }
  .prevent-box{ padding:28px 22px; }
  .cta-actions{ flex-direction:column; align-items:stretch; }
  .footer-inner{ flex-direction:column; align-items:flex-start; }
  .equipment-card{ padding:24px; }
  .equipment-onsite{ flex-direction:column; }
  .hero-usp{ text-align:center; }
  .cta-banner{ flex-direction:column; text-align:center; padding:26px 22px; }
  .sticky-cta{ right:14px; bottom:14px; padding:14px 18px; font-size:13px; }
  .sticky-cta span{ display:none; }
  .sticky-cta i{ font-size:20px; }
}