:root {
  --ink:        #0b1f4a;
  --ink-2:      #1a3a8f;
  --ink-3:      #3b5aa6;
  --muted:      #5a6b8c;
  --line:       #d8e0ee;
  --line-2:     #ebf0f8;
  --bg:         #ffffff;
  --bg-2:       #f4f7fc;
  --bg-3:       #eaf0fa;
  --accent:     #3b6df3;
  --accent-2:   #5b8df7;
  --accent-tint:#e7eefe;
  --good:       #1e9d6b;
  --warn:       #c08a1f;
  --shadow-sm:  0 1px 2px rgba(11,31,74,.04), 0 1px 1px rgba(11,31,74,.03);
  --shadow:     0 6px 24px -8px rgba(11,31,74,.12), 0 2px 6px -2px rgba(11,31,74,.06);
  --shadow-lg:  0 24px 60px -20px rgba(11,31,74,.22), 0 6px 16px -8px rgba(11,31,74,.10);
  --radius-sm:  8px;
  --radius:     14px;
  --radius-lg:  22px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Noto Sans JP","Inter", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "palt" 1;
  line-height: 1.7;
  font-size: 15px;
  letter-spacing: .01em;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }
::selection { background: var(--accent-tint); color: var(--ink); }

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 32px; }
@media (max-width: 720px) { .wrap { padding: 0 20px; } }

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  background: rgba(255,255,255,.78);
  border-bottom: 1px solid transparent;
  transition: border-color .2s, background .2s;
}
.nav.scrolled { border-bottom-color: var(--line); background: rgba(255,255,255,.92); }
.nav-row {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark { width: 28px; height: 28px; display: inline-flex; }
.brand-name { font-weight: 700; font-size: 16px; letter-spacing: .02em; white-space: nowrap; }
.brand-name .en { font-family: "Inter", sans-serif; color: var(--muted); font-weight: 500; margin-left: 6px; font-size: 13px; white-space: nowrap; }
.nav-links { display: flex; gap: 28px; }
.nav-links a { color: var(--muted); font-size: 13.5px; font-weight: 500; transition: color .15s; }
.nav-links a:hover { color: var(--ink); }
.nav-cta {
  background: var(--ink);
  color: #fff;
  padding: 9px 16px;
  border-radius: 999px;
  font-size: 13px; font-weight: 600;
  border: 1px solid var(--ink);
  transition: transform .15s, background .15s;
  white-space: nowrap;
}
.nav-cta:hover { background: var(--ink-2); transform: translateY(-1px); }
@media (max-width: 860px) { .nav-links { display: none; } }

/* ---------- hero ---------- */
.hero {
  position: relative;
  padding: 88px 0 96px;
  overflow: hidden;
  background:
    radial-gradient(900px 480px at 88% 0%, rgba(91,141,247,.16), transparent 60%),
    radial-gradient(700px 360px at 8% 30%, rgba(91,141,247,.08), transparent 60%),
    var(--bg);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 64px;
  align-items: center;
}
@media (max-width: 940px) {
  .hero { padding: 56px 0 64px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
}

.pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px 6px 8px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--ink-2);
  box-shadow: var(--shadow-sm);
}
.pill .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(59,109,243,.12);
}

h1.hero-title {
  margin: 22px 0 20px;
  font-size: clamp(34px, 4.6vw, 56px);
  line-height: 1.18;
  letter-spacing: -.01em;
  font-weight: 800;
}
h1.hero-title .accent { color: var(--accent); }
h1.hero-title .stroke {
  background: linear-gradient(180deg, transparent 62%, rgba(59,109,243,.18) 62%);
}
.hero-sub {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.85;
  max-width: 540px;
  margin: 0 0 28px;
}
.keychips {
  display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 36px;
}
.keychip {
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  font-size: 12.5px;
  color: var(--ink-2);
  font-weight: 500;
}
.keychip .x { color: var(--muted); margin: 0 6px; font-weight: 400; }
.keychip-accent {
  border-color: var(--accent);
  color: var(--accent);
  white-space: nowrap;
}

.cta-row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px;
  border-radius: 12px;
  font-size: 14px; font-weight: 600;
  border: 1px solid transparent;
  transition: transform .15s, box-shadow .15s, background .15s, border-color .15s;
}
.btn-primary {
  background: var(--ink);
  color: #fff;
  box-shadow: 0 8px 18px -8px rgba(11,31,74,.45);
}
.btn-primary:hover { transform: translateY(-1px); background: var(--ink-2); box-shadow: 0 12px 22px -8px rgba(11,31,74,.5); }
.btn-ghost {
  background: #fff;
  color: var(--ink);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--ink-3); }
.btn .arr { transition: transform .15s; display: inline-flex; }
.btn:hover .arr { transform: translateX(3px); }

/* ---------- hero illustration ---------- */
.hero-illu {
  position: relative;
  aspect-ratio: 5 / 4;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, #fbfcff 0%, #eef2fb 100%);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  padding: 28px;
}
.illu-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(11,31,74,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11,31,74,.05) 1px, transparent 1px);
  background-size: 28px 28px;
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
          mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}
.illu-flow {
  position: relative; z-index: 1;
  display: grid;
  grid-template-columns: 1fr auto 1.1fr auto 1fr;
  align-items: center;
  gap: 14px;
  height: 100%;
}
.person, .core {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.avatar {
  width: 64px; height: 64px; border-radius: 50%;
  background: #fff;
  border: 1px solid var(--line);
  display: grid; place-items: center;
  box-shadow: var(--shadow);
}
.avatar svg { width: 32px; height: 32px; }
.label {
  font-size: 11.5px; color: var(--muted); font-weight: 500;
}
.core-orb {
  position: relative;
  width: 110px; height: 110px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #b8cbfb 0%, #6c93f3 45%, #2952cf 100%);
  box-shadow:
    0 0 0 6px rgba(59,109,243,.10),
    0 0 0 18px rgba(59,109,243,.05),
    0 18px 42px -10px rgba(41,82,207,.5);
  display: grid; place-items: center;
  color: #fff;
  font-family: "Inter", sans-serif;
  font-weight: 700;
  letter-spacing: .14em;
  font-size: 18px;
}
.core-orb::before {
  content: "";
  position: absolute; inset: -28px;
  border-radius: 50%;
  border: 1px dashed rgba(59,109,243,.4);
  animation: spin 18s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.arrow-track {
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--ink-3) 0 6px, transparent 6px 12px);
  position: relative;
}
.arrow-track::after {
  content: ""; position: absolute; right: -1px; top: -4px;
  border-left: 8px solid var(--ink-3);
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
}
.illu-tags {
  position: absolute; left: 28px; right: 28px; bottom: 28px;
  display: grid; grid-template-columns: repeat(3,1fr); gap: 10px;
  z-index: 2;
}
.illu-tag {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 12px;
  display: flex; align-items: center; gap: 8px;
  font-size: 12.5px; font-weight: 600;
  box-shadow: var(--shadow-sm);
}
.illu-tag svg { width: 16px; height: 16px; color: var(--accent); flex-shrink: 0; }

/* ---------- section base ---------- */
section { padding: 96px 0; position: relative; }
@media (max-width: 720px) { section { padding: 64px 0; } }
h2.section-title {
  margin: 0 0 18px;
  font-size: clamp(28px, 3.4vw, 40px);
  line-height: 1.3;
  letter-spacing: -.005em;
  font-weight: 700;
}
.section-title-center { text-align: center; }
.section-lede {
  color: var(--muted);
  font-size: 16px;
  max-width: 720px;
  margin: 0 0 48px;
}

/* ---------- problem ---------- */
.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
@media (max-width: 940px) { .problem-grid { grid-template-columns: 1fr; gap: 40px; } }
.scene {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow);
  display: grid; gap: 20px;
}
.doc-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  background: linear-gradient(180deg, #fff 0%, #f8fbff 100%);
  position: relative;
}
.doc-card .head {
  font-size: 11px; color: var(--muted); font-weight: 600;
  letter-spacing: .12em; text-transform: uppercase;
  margin-bottom: 8px;
}
.doc-title {
  font-size: 18px; font-weight: 700; margin-bottom: 12px; color: var(--ink);
}
.doc-title-sub { color: var(--muted); font-weight: 500; font-size: 13px; }
.doc-line {
  height: 8px; background: var(--bg-3); border-radius: 4px; margin: 6px 0;
}
.doc-line.short { width: 60%; }
.doc-line.medium { width: 80%; }

.vs {
  display: grid; grid-template-columns: 1fr auto 1fr; gap: 14px; align-items: center;
}
.vs-arrow {
  color: var(--muted);
  font-size: 22px;
}
.why-cloud {
  border: 1.5px dashed var(--ink-3);
  border-radius: 18px;
  padding: 18px;
  background: rgba(255,255,255,.7);
  position: relative;
}
.why-cloud .why-label {
  position: absolute; top: -10px; left: 14px; background: #fff; padding: 0 8px;
  font-size: 12px; font-weight: 700; color: var(--ink-2);
}
.why-list { display: grid; gap: 8px; }
.why-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 12px;
  font-size: 13px;
  color: var(--ink-2);
}
.why-item.lost { opacity: .35; text-decoration: line-through; }

.pain-list { display: grid; gap: 12px; }
.pain {
  display: flex; gap: 14px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: var(--radius);
  padding: 18px 20px;
}
.pain-icon {
  width: 40px; height: 40px; flex-shrink: 0;
  border-radius: 10px;
  background: var(--accent-tint);
  color: var(--accent);
  display: grid; place-items: center;
}
.pain-icon svg { width: 20px; height: 20px; }
.pain-text strong { display: block; font-weight: 700; margin-bottom: 4px; font-size: 15px; }
.pain-text span { color: var(--muted); font-size: 13.5px; line-height: 1.7; }

/* ---------- solution: steps ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 16px;
}
@media (max-width: 720px) { .steps { grid-template-columns: 1fr; } }
.step {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 20px 20px;
  position: relative;
  transition: transform .2s, box-shadow .2s, border-color .2s;
}
.step:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--ink-3); }
.step-icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  background: var(--bg-3);
  color: var(--ink-2);
  display: grid; place-items: center;
  margin-bottom: 14px;
}
.step-icon svg { width: 22px; height: 22px; }
.step-title { font-size: 15px; font-weight: 700; margin-bottom: 6px; line-height: 1.45; }
.step-desc { font-size: 13px; color: var(--muted); line-height: 1.7; }

/* ---------- output ---------- */
.output-grid {
  display: grid; grid-template-columns: .9fr 1.1fr; gap: 56px; align-items: start;
}
@media (max-width: 940px) { .output-grid { grid-template-columns: 1fr; } }

.output-preview-stack {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.output-video {
  margin: 0;
  background: #0d121a;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--line);
}
.output-video video {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 16 / 9;
  background: #0d121a;
}
.output-video figcaption {
  padding: 10px 14px;
  font-size: 12px;
  color: var(--muted);
  background: #fff;
  border-top: 1px solid var(--line);
  letter-spacing: .02em;
}

.output-preview {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.preview-chrome {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  background: #fbfcff;
}
.preview-dots { display: flex; gap: 6px; }
.preview-dots span { width: 10px; height: 10px; border-radius: 50%; background: #e6ecf6; }
.preview-dots span:nth-child(1) { background: #f4c8c8; }
.preview-dots span:nth-child(2) { background: #f5e0a4; }
.preview-dots span:nth-child(3) { background: #c4e3c8; }
.preview-url {
  font-family: "JetBrains Mono", monospace;
  font-size: 11.5px;
  color: var(--muted);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 4px 10px;
  flex: 1;
}
.preview-body { padding: 24px 26px; min-height: 360px; }

.why-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 14px;
  background: linear-gradient(180deg, #fff 0%, #f8fbff 100%);
}
.why-card .row1 {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 12px; flex-wrap: wrap; gap: 8px;
}
.why-card h4 {
  margin: 0; font-size: 15px; font-weight: 700;
}
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 9px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .04em;
}
.badge.inherit { background: #e7f5ee; color: var(--good); }
.badge.review  { background: #fdf3da; color: var(--warn); }
.why-row {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 12px;
  padding: 8px 0;
  font-size: 13.5px;
  border-top: 1px dashed var(--line);
}
.why-row:first-of-type { border-top: 0; }
.why-row .k {
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .05em;
}
.why-row .v { color: var(--ink); line-height: 1.7; }

/* ---------- phases ---------- */
.phases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  position: relative;
}
@media (max-width: 940px) { .phases-grid { grid-template-columns: 1fr; } }
.phase {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 30px 28px;
  position: relative;
  transition: transform .2s, box-shadow .2s;
}
.phase:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.phase-tag {
  font-family: "Inter", sans-serif;
  font-size: 11.5px; font-weight: 600;
  letter-spacing: .15em;
  color: var(--accent);
  margin-bottom: 14px;
}
.phase-icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: var(--bg-3);
  color: var(--ink-2);
  display: grid; place-items: center;
  margin-bottom: 18px;
}
.phase-icon svg { width: 28px; height: 28px; }
.phase h3 { margin: 0 0 8px; font-size: 19px; font-weight: 700; }
.phase-desc { color: var(--muted); font-size: 14px; line-height: 1.75; margin: 0 0 18px; }
.phase-tasks { display: grid; gap: 8px; }
.phase-task {
  font-size: 13px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcff;
  display: flex; align-items: center; gap: 8px;
}
.phase-task::before {
  content: ""; width: 5px; height: 5px; border-radius: 50%;
  background: var(--accent);
}
.phase-flow {
  margin-top: 32px;
  text-align: center;
  color: var(--ink-2);
  font-weight: 600;
  font-size: 14px;
}
.phase-flow span {
  display: inline-block;
  padding: 10px 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  box-shadow: var(--shadow-sm);
}
.phase-flow .arr { margin: 0 10px; color: var(--accent); }

/* ---------- alpha ---------- */
.alpha {
  background: linear-gradient(160deg, #0b1f4a 0%, #1a3a8f 60%, #2952cf 110%);
  color: #fff;
  overflow: hidden;
  position: relative;
}
.alpha::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(600px 300px at 90% 0%, rgba(255,255,255,.10), transparent 60%),
    radial-gradient(500px 240px at 10% 100%, rgba(91,141,247,.18), transparent 60%);
  pointer-events: none;
}
.alpha-wrap { position: relative; }
.alpha h2.section-title { color: #fff; }
.alpha .section-lede { color: rgba(255,255,255,.7); }
.alpha-flow {
  margin-top: 8px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius-lg);
  padding: 30px 28px;
}
.alpha-flow-title {
  margin: 0 0 18px;
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  letter-spacing: .02em;
}
.alpha-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 24px;
}
@media (max-width: 860px) { .alpha-steps { grid-template-columns: 1fr; } }
.alpha-step {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius);
  padding: 16px 18px;
}
.alpha-step-num {
  font-family: "Inter", sans-serif;
  font-size: 11px; font-weight: 600;
  letter-spacing: .14em;
  color: #8fb0ff;
  margin-bottom: 8px;
}
.alpha-step-title {
  font-size: 14.5px; font-weight: 700;
  margin-bottom: 6px;
  color: #fff;
}
.alpha-step-desc {
  font-size: 13px;
  color: rgba(255,255,255,.78);
  line-height: 1.7;
}
.alpha-deliverables {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius);
  padding: 8px 18px;
}
.alpha-del-row {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 16px;
  padding: 10px 0;
  font-size: 13.5px;
  border-bottom: 1px dashed rgba(255,255,255,.10);
}
.alpha-del-row:last-child { border-bottom: 0; }
@media (max-width: 540px) { .alpha-del-row { grid-template-columns: 1fr; gap: 4px; } }
.alpha-del-key {
  color: rgba(255,255,255,.6);
  font-weight: 600;
  letter-spacing: .04em;
  font-size: 12.5px;
}
.alpha-del-val {
  color: #fff;
  line-height: 1.7;
}

/* ---------- target ---------- */
.target-section { padding-top: 96px; padding-bottom: 32px; }
.target-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
}
@media (max-width: 940px) { .target-grid { grid-template-columns: 1fr; } }
.target-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 22px;
  background: #fff;
  transition: border-color .2s, transform .2s;
}
.target-card:hover { border-color: var(--ink-3); transform: translateY(-2px); }
.target-card .ico {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--accent-tint);
  color: var(--accent);
  display: grid; place-items: center;
  margin-bottom: 16px;
}
.target-card .ico svg { width: 20px; height: 20px; }
.target-card h4 { margin: 0 0 6px; font-size: 16px; font-weight: 700; }
.target-card p  { margin: 0; color: var(--muted); font-size: 13.5px; line-height: 1.7; }

/* ---------- faq ---------- */
.faq-section { padding-top: 64px; }
.faq-spacer { height: 24px; }
.faq-list { display: grid; gap: 10px; max-width: 820px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  overflow: hidden;
}
.faq-q {
  width: 100%;
  text-align: left;
  background: none;
  border: 0;
  padding: 18px 22px;
  display: flex; align-items: center; gap: 16px;
  font-size: 15px;
  font-weight: 600;
  cursor: default;
}
.faq-q .q-mark {
  color: var(--accent);
  font-family: "Inter", sans-serif;
  margin-right: 12px;
}
.faq-a-inner {
  padding: 0 22px 20px 56px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.85;
}

/* ---------- contact form ---------- */
.contact-grid {
  display: grid; grid-template-columns: .9fr 1.1fr; gap: 60px; align-items: start;
}
@media (max-width: 940px) { .contact-grid { grid-template-columns: 1fr; gap: 40px; } }

/* honeypot (bot detection) */
.honeypot {
  position: absolute;
  left: -10000px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow);
}
.form-row { display: grid; gap: 6px; margin-bottom: 18px; }
.form-row.two { grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 18px; }
.form-row.two .form-row { margin: 0; }
@media (max-width: 540px) { .form-row.two { grid-template-columns: 1fr; } }
.form-row label {
  font-size: 12.5px; font-weight: 600; color: var(--ink-2);
  display: flex; align-items: center; gap: 6px;
}
.form-row label .req { color: var(--accent); font-size: 11px; }
.form-row input, .form-row select, .form-row textarea {
  font: inherit; color: inherit;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 11px 13px;
  background: #fff;
  transition: border-color .15s, box-shadow .15s;
  font-size: 14px;
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(59,109,243,.14);
}
.form-row textarea { min-height: 110px; resize: vertical; line-height: 1.7; }
.form-row.error input, .form-row.error select, .form-row.error textarea { border-color: #d05262; }
.form-row .err {
  color: #d05262; font-size: 12px; margin-top: 2px;
  display: none;
}
.form-row.error .err { display: block; }
.submit-btn {
  width: 100%;
  background: var(--ink);
  color: #fff;
  padding: 15px;
  border-radius: 12px;
  border: 0;
  font-size: 14px; font-weight: 600;
  cursor: pointer;
  transition: background .15s, transform .15s;
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
}
.submit-btn:hover { background: var(--ink-2); }
.submit-btn:disabled { opacity: .5; cursor: not-allowed; }
.form-footnote {
  margin-top: 14px;
  color: var(--muted);
  font-size: 12px;
  text-align: center;
}

.success {
  text-align: center;
  padding: 24px 18px;
}
.success .ico {
  width: 56px; height: 56px; border-radius: 50%;
  background: #e7f5ee; color: var(--good);
  display: grid; place-items: center;
  margin: 0 auto 16px;
}
.success h3 { margin: 0 0 8px; font-size: 20px; }
.success p { color: var(--muted); margin: 0; font-size: 14px; }

.contact-info { color: var(--muted); }
.contact-info h2.section-title { color: var(--ink); }
.info-list { display: grid; gap: 14px; margin-top: 28px; }
.info-item {
  display: flex; gap: 14px; align-items: flex-start;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}
.info-item:first-child { border-top: 0; }
.info-item .ico {
  width: 36px; height: 36px;
  border-radius: 8px;
  background: #fff;
  border: 1px solid var(--line);
  color: var(--accent);
  display: grid; place-items: center; flex-shrink: 0;
}
.info-item .ico svg { width: 16px; height: 16px; }
.info-item .k { font-size: 12px; color: var(--muted); margin-bottom: 2px; }
.info-item .v { color: var(--ink); font-weight: 600; font-size: 14px; }

/* ---------- footer ---------- */
footer.foot {
  background: #fff;
  border-top: 1px solid var(--line);
  padding: 40px 0 32px;
  color: var(--muted);
  font-size: 13px;
}
.foot-row {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 16px;
}
.foot-row a { color: var(--muted); }
.foot-row a:hover { color: var(--ink); }
.foot-links { display: flex; gap: 22px; }
.brand-foot { gap: 8px; }
.brand-name-foot { font-size: 14px; }
.brand-name-foot .en { font-size: 12px; }

/* ---------- security ---------- */
.sec-grid {
  display: grid; grid-template-columns: 1fr 1.05fr; gap: 56px; align-items: center;
}
@media (max-width: 940px) { .sec-grid { grid-template-columns: 1fr; gap: 32px; } }
.sec-points { display: grid; gap: 12px; }
.sec-point {
  display: flex; gap: 14px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: var(--radius);
  padding: 18px 20px;
}
.sec-point .ico {
  width: 40px; height: 40px; flex-shrink: 0;
  border-radius: 10px;
  background: var(--accent-tint);
  color: var(--accent);
  display: grid; place-items: center;
}
.sec-point .ico svg { width: 20px; height: 20px; }
.sec-point strong { display: block; font-weight: 700; margin-bottom: 4px; font-size: 15px; }
.sec-point span { color: var(--muted); font-size: 13.5px; line-height: 1.7; }
.sec-diagram {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow);
  position: relative;
}
.sec-zone {
  border: 1.5px dashed var(--ink-3);
  border-radius: 14px;
  padding: 22px 18px 18px;
  position: relative;
  background: rgba(231,238,254,.35);
}
.sec-zone-label {
  position: absolute; top: -10px; left: 14px;
  background: #fff; padding: 0 8px;
  font-size: 11px; font-weight: 700; letter-spacing: .12em;
  color: var(--ink-2);
}
.sec-zone-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.sec-node {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px 10px;
  text-align: center;
  font-size: 12px; font-weight: 600;
  box-shadow: var(--shadow-sm);
}
.sec-node .ic {
  width: 28px; height: 28px; margin: 0 auto 6px;
  border-radius: 8px;
  background: var(--accent-tint);
  color: var(--accent);
  display: grid; place-items: center;
}
.sec-node .ic svg { width: 16px; height: 16px; }
.sec-out {
  margin-top: 14px;
  display: flex; align-items: center; justify-content: center; gap: 10px;
  color: var(--muted);
  font-size: 12px;
  padding: 10px;
  border-top: 1px dashed var(--line);
}
.sec-out .pip {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--good);
  box-shadow: 0 0 0 4px rgba(30,157,107,.14);
}

/* ---------- why-us ---------- */
.why-us-section { padding-top: 96px; padding-bottom: 96px; }
.whyus-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-bottom: 32px;
}
@media (max-width: 940px) { .whyus-grid { grid-template-columns: 1fr; } }
.whyus-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px;
  transition: transform .2s, box-shadow .2s, border-color .2s;
}
.whyus-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--ink-3); }
.whyus-tag {
  display: inline-block;
  font-family: "Inter", sans-serif;
  font-size: 11px; font-weight: 600;
  letter-spacing: .14em;
  color: var(--accent);
  background: var(--accent-tint);
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 14px;
}
.whyus-card h3 {
  margin: 0 0 10px;
  font-size: 16px; font-weight: 700;
  line-height: 1.5;
}
.whyus-card p {
  margin: 0;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.85;
}

/* ---------- v4 overrides (alpha steps 縦組み + security 図解削除) ---------- */
.sec-points-centered {
  max-width: 720px;
  margin: 0 auto;
}
.alpha-steps {
  grid-template-columns: 1fr;
}
.alpha-step {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 6px 18px;
  align-items: start;
}
.alpha-step-num {
  grid-row: 1 / 3;
  align-self: center;
  margin-bottom: 0;
}
.alpha-step-title { grid-column: 2; }
.alpha-step-desc  { grid-column: 2; }
@media (max-width: 540px) {
  .alpha-step {
    grid-template-columns: 1fr;
    gap: 4px;
  }
  .alpha-step-num { grid-row: auto; }
  .alpha-step-title, .alpha-step-desc { grid-column: auto; }
}