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

:root {
  --navy: #0d1b4b;
  --blue: #1a6fd4;
  --cyan: #00c9a7;
  --bg: #f5f7fa;
  --white: #ffffff;
  --text: #1a1a2e;
  --muted: #64748b;
  --border: #d0d8e8;
  --navy2: #152260;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Noto Sans JP", sans-serif;
  color: var(--text);
  background: var(--white);
  font-size: 15px;
  line-height: 1.7;
}

a {
  text-decoration: none;
  color: inherit;
}

/* ── HEADER ── */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(13, 27, 75, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.header-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  height: 64px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--white);
  font-weight: 700;
  font-size: 17px;
}
.logo-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--cyan);
  flex-shrink: 0;
}
.logo-img {
  width: 64px;
  height: 64px;
  object-fit: contain;
  flex-shrink: 0;
}
.logo-sub {
  font-size: 11px;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 0.05em;
  margin-top: 1px;
}
nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
nav a {
  color: rgba(255, 255, 255, 0.72);
  font-size: 13.5px;
  transition: color 0.2s;
}
nav a:hover {
  color: var(--white);
}
.nav-cta {
  background: var(--cyan);
  color: var(--navy) !important;
  font-weight: 700 !important;
  font-size: 13px !important;
  padding: 8px 18px;
  border-radius: 6px;
}
.nav-cta:hover {
  opacity: 0.88;
}

/* ── HERO ── */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, #0a1540 0%, #0f2a6e 55%, #1a3a8a 100%);
  display: flex;
  align-items: center;
  padding: 100px 24px 80px;
  position: relative;
  overflow: hidden;
}
/* 背景グロー */
.hero-glow-1 {
  position: absolute;
  top: -180px;
  right: -150px;
  width: 680px;
  height: 680px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(0, 201, 167, 0.1) 0%,
    transparent 65%
  );
  pointer-events: none;
}
.hero-glow-2 {
  position: absolute;
  bottom: -100px;
  left: -80px;
  width: 480px;
  height: 480px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(26, 111, 212, 0.14) 0%,
    transparent 65%
  );
  pointer-events: none;
}
.hero-inner {
  max-width: 1120px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 201, 167, 0.12);
  border: 1px solid rgba(0, 201, 167, 0.3);
  color: var(--cyan);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 5px 12px;
  border-radius: 100px;
  margin-bottom: 24px;
}
.hero-label::before {
  content: "●";
  font-size: 7px;
}
h1 {
  font-size: clamp(30px, 3.8vw, 50px);
  font-weight: 900;
  color: var(--white);
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
h1 em {
  color: var(--cyan);
  font-style: normal;
}
.hero-desc {
  color: rgba(255, 255, 255, 0.68);
  font-size: 15.5px;
  line-height: 1.85;
  margin-bottom: 32px;
}
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 36px;
}
.tag {
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: rgba(255, 255, 255, 0.6);
  font-size: 11.5px;
  font-family: "JetBrains Mono", monospace;
  padding: 4px 10px;
  border-radius: 4px;
}
.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.btn-primary {
  background: var(--cyan);
  color: var(--navy);
  font-weight: 800;
  font-size: 15px;
  padding: 14px 28px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition:
    transform 0.15s,
    box-shadow 0.15s;
  display: inline-block;
  font-family: "Noto Sans JP", sans-serif;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0, 201, 167, 0.38);
}
.btn-secondary {
  background: transparent;
  color: var(--white);
  font-weight: 500;
  font-size: 15px;
  padding: 14px 28px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  cursor: pointer;
  transition:
    background 0.15s,
    border-color 0.15s;
  display: inline-block;
  font-family: "Noto Sans JP", sans-serif;
}
.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(255, 255, 255, 0.5);
}

/* ── HERO: AI MOCK UI ── */
.hero-mockui {
  position: relative;
}
.mockui-window {
  background: #0e1628;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  overflow: hidden;
  box-shadow:
    0 32px 80px rgba(0, 0, 0, 0.5),
    0 0 0 1px rgba(255, 255, 255, 0.05);
}
.mockui-titlebar {
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.titlebar-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.titlebar-dot:nth-child(1) {
  background: #ff5f57;
}
.titlebar-dot:nth-child(2) {
  background: #ffbd2e;
}
.titlebar-dot:nth-child(3) {
  background: #28c840;
}
.titlebar-name {
  margin-left: 8px;
  font-size: 12px;
  font-family: "JetBrains Mono", monospace;
  color: rgba(255, 255, 255, 0.4);
}
.mockui-chat {
  padding: 20px 18px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 300px;
}
.chat-msg {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}
.chat-msg.user {
  flex-direction: row-reverse;
}
.chat-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
}
.chat-avatar.ai-av {
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  color: var(--navy);
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
}
.chat-avatar.user-av {
  background: rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.7);
}
.chat-bubble {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 12px;
  padding: 10px 14px;
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.65;
  max-width: 80%;
}
.chat-msg.user .chat-bubble {
  background: rgba(26, 111, 212, 0.25);
  border-color: rgba(26, 111, 212, 0.35);
}
.chat-bubble strong {
  color: var(--cyan);
  font-weight: 600;
}
.chat-source {
  margin-top: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}
.source-chip {
  background: rgba(0, 201, 167, 0.1);
  border: 1px solid rgba(0, 201, 167, 0.25);
  color: rgba(0, 201, 167, 0.9);
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 4px;
  font-family: "JetBrains Mono", monospace;
}
.mockui-input {
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.mockui-input-box {
  flex: 1;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.5);
  font-family: "Noto Sans JP", sans-serif;
}
.mockui-send {
  width: 30px;
  height: 30px;
  border-radius: 6px;
  background: var(--cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: var(--navy);
  cursor: pointer;
  flex-shrink: 0;
}
/* badge below mock */
.mockui-badge {
  position: absolute;
  bottom: -16px;
  right: 16px;
  background: var(--white);
  border-radius: 10px;
  padding: 10px 16px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  display: flex;
  align-items: center;
  gap: 10px;
}
.badge-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: linear-gradient(135deg, #00c9a7, #1a6fd4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}
.badge-text {
  font-size: 12px;
  color: var(--navy);
}
.badge-text strong {
  display: block;
  font-size: 14px;
  font-weight: 800;
  color: var(--navy);
}

/* ── LOGO STRIP ── */
.logostrip {
  background: var(--white);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 20px 24px;
  overflow: hidden;
}
.logostrip-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 0;
}
.logostrip-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--border);
  text-transform: uppercase;
  white-space: nowrap;
  margin-right: 40px;
  flex-shrink: 0;
}
.logostrip-items {
  display: flex;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
}
.ls-chip {
  font-family: "JetBrains Mono", monospace;
  font-size: 13px;
  font-weight: 600;
  color: #b0bccc;
  white-space: nowrap;
  transition: color 0.2s;
}
.ls-chip:hover {
  color: var(--navy);
}
.ls-sep {
  color: var(--border);
  font-size: 16px;
}

/* ── SECTIONS common ── */
section {
  padding: 96px 24px;
}
.section-inner {
  max-width: 1120px;
  margin: 0 auto;
}
.section-label {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--blue);
  text-transform: uppercase;
  margin-bottom: 10px;
}
h2 {
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 900;
  color: var(--navy);
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin-bottom: 16px;
}
.section-desc {
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.85;
  max-width: 640px;
  margin-bottom: 56px;
}

/* ── SERVICES ── */
.services {
  background: var(--bg);
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.service-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  transition:
    box-shadow 0.2s,
    transform 0.2s;
}
.service-card:hover {
  box-shadow: 0 10px 36px rgba(13, 27, 75, 0.11);
  transform: translateY(-3px);
}
.service-img {
  height: 160px;
  overflow: hidden;
  position: relative;
}
.service-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.service-card:hover .service-img img {
  transform: scale(1.04);
}
.service-img-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(13, 27, 75, 0.3),
    rgba(13, 27, 75, 0.7)
  );
  display: flex;
  align-items: flex-end;
  padding: 14px 16px;
}
.service-num-overlay {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--cyan);
}
.service-body {
  padding: 24px 28px;
}
.service-card h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 5px;
}
.service-card .en {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 12px;
  font-family: "JetBrains Mono", monospace;
}
.service-card p {
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.8;
  margin-bottom: 16px;
}
.service-examples {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.example-tag {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 11.5px;
  padding: 3px 10px;
  border-radius: 100px;
}
.service-price {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  font-size: 13.5px;
  color: var(--navy);
  font-weight: 700;
}
.service-price span {
  font-size: 22px;
}

/* ── TECH STACK ── */
.tech {
  background: var(--navy);
}
.tech .section-label {
  color: var(--cyan);
}
.tech h2 {
  color: var(--white);
}
.tech .section-desc {
  color: rgba(255, 255, 255, 0.5);
}
.tech-code-block {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 12px;
  padding: 28px 32px;
  margin-bottom: 28px;
  font-family: "JetBrains Mono", monospace;
}
.code-line {
  display: flex;
  gap: 16px;
  margin-bottom: 10px;
  font-size: 13px;
}
.code-line:last-child {
  margin-bottom: 0;
}
.code-key {
  color: var(--cyan);
  min-width: 130px;
  flex-shrink: 0;
}
.code-sep {
  color: rgba(255, 255, 255, 0.2);
}
.code-val {
  color: rgba(255, 255, 255, 0.72);
}
.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.tech-block {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 10px;
  padding: 20px 22px;
}
.tech-block-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--cyan);
  margin-bottom: 12px;
  font-family: "JetBrains Mono", monospace;
}
.tech-items {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.tech-chip {
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.13);
  color: rgba(255, 255, 255, 0.78);
  font-size: 11.5px;
  font-family: "JetBrains Mono", monospace;
  padding: 4px 10px;
  border-radius: 4px;
}
.tech-chip.hi {
  background: rgba(0, 201, 167, 0.14);
  border-color: rgba(0, 201, 167, 0.35);
  color: var(--cyan);
}

/* ── WHY ── */
.why {
  background: var(--white);
}
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.why-card {
  padding: 28px 24px;
  border: 1px solid var(--border);
  border-radius: 14px;
  position: relative;
  overflow: hidden;
  transition: box-shadow 0.2s;
}
.why-card:hover {
  box-shadow: 0 8px 28px rgba(13, 27, 75, 0.08);
}
.why-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--blue));
}
.why-num {
  font-size: 34px;
  font-weight: 900;
  color: var(--border);
  font-family: "JetBrains Mono", monospace;
  line-height: 1;
  margin-bottom: 12px;
}
.why-badge {
  display: inline-block;
  background: rgba(0, 201, 167, 0.08);
  border: 1px solid rgba(0, 201, 167, 0.28);
  color: #00a889;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 100px;
  margin-bottom: 8px;
}
.why-card h3 {
  font-size: 17px;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 10px;
}
.why-card p {
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.8;
}

/* ── USE CASES (image strip) ── */
.usecases {
  background: var(--bg);
}
.usecase-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.usecase-card {
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--white);
}
.usecase-img {
  height: 180px;
  position: relative;
  overflow: hidden;
}
.usecase-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.usecase-img-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(13, 27, 75, 0.85) 0%,
    transparent 60%
  );
}
.usecase-overlay-text {
  position: absolute;
  bottom: 14px;
  left: 16px;
  color: var(--white);
  font-size: 16px;
  font-weight: 800;
  line-height: 1.3;
}
.usecase-body {
  padding: 18px 20px;
}
.usecase-tag {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--blue);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.usecase-body p {
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.75;
}
.usecase-before-after {
  display: flex;
  gap: 8px;
  margin-top: 14px;
  flex-wrap: wrap;
}
.before-chip,
.after-chip {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 6px;
}
.before-chip {
  background: #fff1f1;
  color: #c0392b;
  border: 1px solid #fdd;
}
.after-chip {
  background: #f0fdf8;
  color: #0a8a6a;
  border: 1px solid #c6f0e7;
}

/* ── PROCESS ── */
.process {
  background: var(--white);
}
.process-steps {
  display: flex;
  gap: 0;
  position: relative;
}
.process-steps::before {
  content: "";
  position: absolute;
  top: 27px;
  left: 28px;
  right: 28px;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--blue));
  z-index: 0;
}
.process-step {
  flex: 1;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0 10px;
}
.step-circle {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: var(--white);
  border: 2px solid var(--cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  font-weight: 900;
  color: var(--navy);
  margin-bottom: 16px;
  font-family: "JetBrains Mono", monospace;
  box-shadow: 0 0 0 5px rgba(0, 201, 167, 0.1);
}
.step-title {
  font-size: 14px;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 6px;
}
.step-desc {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.6;
}

/* ── PRICING ── */
.pricing {
  background: var(--bg);
}
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}
.price-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px 24px;
}
.price-card.featured {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(26, 111, 212, 0.1);
}
.price-label {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--blue);
  margin-bottom: 8px;
  text-transform: uppercase;
}
.price-card h3 {
  font-size: 18px;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 8px;
}
.price-amount {
  font-size: 28px;
  font-weight: 900;
  color: var(--navy);
  margin-bottom: 4px;
}
.price-amount span {
  font-size: 14px;
  font-weight: 400;
  color: var(--muted);
}
.price-note {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 20px;
}
.price-list {
  list-style: none;
}
.price-list li {
  font-size: 13px;
  color: var(--muted);
  padding: 6px 0;
  border-bottom: 1px solid var(--bg);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.price-list li::before {
  content: "→";
  color: var(--cyan);
  flex-shrink: 0;
}
.pricing-note {
  background: var(--white);
  border-radius: 10px;
  border: 1px solid var(--border);
  padding: 20px 24px;
  font-size: 14px;
  color: var(--muted);
  border-left: 3px solid var(--cyan);
}

/* ── ARTICLES ── */
.articles {
  background: var(--white);
}
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.article-card {
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  transition:
    box-shadow 0.2s,
    transform 0.2s;
  background: var(--white);
}
.article-card:hover {
  box-shadow: 0 8px 28px rgba(13, 27, 75, 0.1);
  transform: translateY(-3px);
}
.article-thumb {
  height: 180px;
  overflow: hidden;
  position: relative;
}
.article-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.article-card:hover .article-thumb img {
  transform: scale(1.05);
}
.article-thumb-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(13, 27, 75, 0.5) 0%,
    transparent 50%
  );
}
.article-body {
  padding: 20px;
}
.article-cat {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--blue);
  margin-bottom: 8px;
  text-transform: uppercase;
}
.article-card h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.5;
  margin-bottom: 8px;
}
.article-card p {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.65;
}

/* ── CTA BANNER ── */
.cta-banner {
  background: linear-gradient(135deg, var(--navy), #1a3a8a);
  padding: 72px 24px;
}
.cta-banner-inner {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}
.cta-banner h2 {
  color: var(--white);
  margin-bottom: 14px;
}
.cta-banner p {
  color: rgba(255, 255, 255, 0.65);
  font-size: 16px;
  margin-bottom: 36px;
}
.cta-banner-btns {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── CONTACT ── */
.contact {
  background: #060e28;
  padding: 96px 24px;
}
.contact-inner {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}
.contact h2 {
  color: var(--white);
  margin-bottom: 14px;
}
.contact .section-desc {
  color: rgba(255, 255, 255, 0.55);
  max-width: 100%;
  margin-bottom: 48px;
}
.contact-form {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 18px;
  padding: 36px;
  text-align: left;
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.form-group.full {
  grid-column: 1 / -1;
}
label {
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.6);
  font-weight: 500;
}
label .req {
  color: var(--cyan);
  font-size: 11px;
  margin-left: 4px;
}
input,
select,
textarea {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 8px;
  padding: 11px 14px;
  color: var(--white);
  font-size: 14px;
  font-family: "Noto Sans JP", sans-serif;
  transition: border-color 0.2s;
  width: 100%;
}
input::placeholder,
textarea::placeholder {
  color: rgba(255, 255, 255, 0.28);
}
input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--cyan);
}
select option {
  background: #0d1b4b;
}
textarea {
  resize: vertical;
  min-height: 90px;
}
.form-submit {
  margin-top: 24px;
  text-align: center;
}
.form-submit button {
  background: var(--cyan);
  color: var(--navy);
  font-weight: 800;
  font-size: 16px;
  padding: 15px 52px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition:
    transform 0.15s,
    box-shadow 0.15s;
  font-family: "Noto Sans JP", sans-serif;
}
.form-submit button:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0, 201, 167, 0.4);
}
.form-note {
  text-align: center;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.3);
  margin-top: 14px;
}

/* ── FOOTER ── */
footer {
  background: #040b1e;
  padding: 52px 24px 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}
.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.footer-brand .logo {
  margin-bottom: 14px;
}
.footer-desc {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.38);
  line-height: 1.75;
}
.footer-col h4 {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.35);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  font-size: 13.5px;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 9px;
  transition: color 0.2s;
}
.footer-col a:hover {
  color: var(--white);
}
.footer-bottom {
  max-width: 1120px;
  margin: 0 auto;
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-copy {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.22);
}
.footer-links {
  display: flex;
  gap: 20px;
}
.footer-links a {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.28);
  transition: color 0.2s;
}
.footer-links a:hover {
  color: rgba(255, 255, 255, 0.65);
}

/* ── MOBILE ── */
/* ── MOBILE NAV (hamburger) ── */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 4px;
  flex-shrink: 0;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}
.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
.nav-mobile {
  display: none;
  background: rgba(10, 21, 64, 0.98);
  backdrop-filter: blur(8px);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 8px 24px 20px;
}
.nav-mobile.open {
  display: block;
}
.nav-mobile a {
  display: block;
  color: rgba(255, 255, 255, 0.72);
  font-size: 15px;
  padding: 13px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: color 0.2s;
}
.nav-mobile a:last-child {
  border-bottom: none;
}
.nav-mobile a:hover {
  color: var(--white);
}
.nav-mobile .nav-cta {
  display: inline-block;
  margin-top: 14px;
  background: var(--cyan);
  color: var(--navy) !important;
  font-weight: 700;
  padding: 10px 22px;
  border-radius: 6px;
  border-bottom: none;
}

@media (max-width: 920px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }
  .hero-mockui {
    display: none;
  }
  .services-grid {
    grid-template-columns: 1fr;
  }
  .tech-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .why-grid {
    grid-template-columns: 1fr;
  }
  .usecase-grid {
    grid-template-columns: 1fr;
  }
  .process-steps {
    flex-direction: column;
    gap: 28px;
  }
  .process-steps::before {
    display: none;
  }
  .process-step {
    flex-direction: row;
    align-items: flex-start;
    text-align: left;
  }
  .step-circle {
    flex-shrink: 0;
    margin-bottom: 0;
    margin-right: 16px;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  .articles-grid {
    grid-template-columns: 1fr;
  }
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  .footer-links {
    flex-wrap: wrap;
    gap: 10px 18px;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
  nav {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
}
@media (max-width: 600px) {
  .tech-grid {
    grid-template-columns: 1fr;
  }
  section {
    padding: 64px 16px;
  }
}

/* ── ARTICLE PAGES ── */
.article-hero {
  background: linear-gradient(135deg, #0a1540 0%, #0f2a6e 55%, #1a3a8a 100%);
  padding: 120px 24px 72px;
  position: relative;
  overflow: hidden;
}
.article-hero-glow {
  position: absolute;
  top: -150px;
  right: -100px;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 201, 167, 0.12) 0%, transparent 65%);
  pointer-events: none;
}
.article-hero-inner {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.article-breadcrumb {
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.4);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.article-breadcrumb a {
  color: rgba(255, 255, 255, 0.4);
  transition: color 0.2s;
}
.article-breadcrumb a:hover {
  color: var(--cyan);
}
.article-cat-badge {
  display: inline-flex;
  align-items: center;
  background: rgba(0, 201, 167, 0.12);
  border: 1px solid rgba(0, 201, 167, 0.3);
  color: var(--cyan);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 18px;
}
.article-hero h1 {
  font-size: clamp(22px, 3vw, 38px);
  font-weight: 900;
  color: var(--white);
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin-bottom: 22px;
}
.article-meta {
  display: flex;
  gap: 20px;
  color: rgba(255, 255, 255, 0.45);
  font-size: 13px;
  flex-wrap: wrap;
}
.article-meta span {
  display: flex;
  align-items: center;
  gap: 5px;
}
.article-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 64px 24px 96px;
}
.article-back-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--blue);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 40px;
  transition: gap 0.15s;
}
.article-back-btn:hover {
  gap: 12px;
}
.article-summary-box {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px 28px;
  margin-bottom: 48px;
}
.article-summary-box .summary-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--blue);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.article-summary-box ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.article-summary-box li {
  color: var(--navy);
  font-size: 14.5px;
  line-height: 1.75;
  margin-bottom: 8px;
  padding-left: 20px;
  position: relative;
}
.article-summary-box li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--cyan);
  font-size: 12px;
}
.article-content h2 {
  font-size: clamp(19px, 2.2vw, 24px);
  font-weight: 800;
  color: var(--navy);
  margin: 56px 0 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border);
  letter-spacing: -0.01em;
}
.article-content h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--navy);
  margin: 36px 0 12px;
}
.article-content p {
  color: #2a3550;
  font-size: 15.5px;
  line-height: 1.95;
  margin-bottom: 22px;
}
.article-content ul,
.article-content ol {
  margin: 0 0 22px 0;
  padding-left: 20px;
}
.article-content li {
  color: #2a3550;
  font-size: 15px;
  line-height: 1.85;
  margin-bottom: 10px;
}
.article-callout {
  background: rgba(0, 201, 167, 0.05);
  border: 1px solid rgba(0, 201, 167, 0.25);
  border-left: 3px solid var(--cyan);
  border-radius: 0 8px 8px 0;
  padding: 18px 22px;
  margin: 30px 0;
}
.article-callout p {
  margin-bottom: 0;
  color: var(--navy);
  font-size: 14.5px;
  line-height: 1.8;
}
.article-img {
  width: 100%;
  border-radius: 12px;
  overflow: hidden;
  margin: 36px 0;
}
.article-img img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}
.article-code-block {
  background: #0e1628;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  padding: 22px 26px;
  margin: 24px 0;
  font-family: "JetBrains Mono", monospace;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.8);
  overflow-x: auto;
  line-height: 1.7;
}
.article-code-block .code-comment { color: rgba(255, 255, 255, 0.35); }
.article-code-block .code-key    { color: var(--cyan); }
.article-code-block .code-str    { color: #f9b261; }

/* article内のCTAバナー */
.article-cta {
  background: linear-gradient(135deg, var(--navy), #1a3a8a);
  padding: 64px 24px;
}
.article-cta-inner {
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
}
.article-cta h2 {
  color: var(--white);
  font-size: clamp(22px, 2.5vw, 30px);
  margin-bottom: 12px;
}
.article-cta p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 15px;
  margin-bottom: 30px;
}
.article-cta-btns {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* 記事カードのカーソル */
.article-card {
  cursor: pointer;
}

/* ── COMPANY PAGE ── */
.company-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 48px;
}
.company-table tr {
  border-bottom: 1px solid var(--border);
}
.company-table tr:first-child {
  border-top: 1px solid var(--border);
}
.company-table th {
  width: 160px;
  padding: 20px 24px 20px 0;
  text-align: left;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--navy);
  vertical-align: top;
  white-space: nowrap;
}
.company-table td {
  padding: 20px 0;
  font-size: 15px;
  color: var(--muted);
  line-height: 1.8;
  vertical-align: top;
}
.company-section-title {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--blue);
  text-transform: uppercase;
  margin: 56px 0 20px;
}
.company-section-title:first-child {
  margin-top: 0;
}

/* ── PRIVACY POLICY PAGE ── */
.policy-intro {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.9;
  margin-bottom: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
}
.policy-article {
  margin-bottom: 40px;
}
.policy-article h2 {
  font-size: 17px;
  font-weight: 700;
  color: var(--navy);
  margin: 40px 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
  letter-spacing: 0;
}
.policy-article p {
  font-size: 14.5px;
  color: #445;
  line-height: 1.95;
  margin-bottom: 12px;
}
.policy-article ol {
  padding-left: 20px;
  margin: 8px 0 12px;
}
.policy-article li {
  font-size: 14.5px;
  color: #445;
  line-height: 1.9;
  margin-bottom: 8px;
}
.policy-article ol ol {
  margin-top: 8px;
}
.policy-contact-box {
  background: var(--bg);
  border: 1px solid var(--border);
  border-left: 3px solid var(--cyan);
  border-radius: 0 8px 8px 0;
  padding: 20px 24px;
  margin-top: 14px;
}
.policy-contact-box p {
  margin-bottom: 4px;
  font-size: 14px;
  color: var(--navy);
}
/* ── PHASE TABLE (article-ai-intro) ── */
.phase-table {
  width: 100%;
  border-collapse: collapse;
  margin: 8px 0 28px;
  font-size: 14.5px;
}
.phase-table thead tr {
  background: var(--navy);
}
.phase-table thead th {
  padding: 12px 16px;
  text-align: left;
  color: rgba(255, 255, 255, 0.7);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
}
.phase-table thead th:first-child {
  border-radius: 8px 0 0 0;
}
.phase-table thead th:last-child {
  border-radius: 0 8px 0 0;
}
.phase-table tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background 0.15s;
}
.phase-table tbody tr:last-child {
  border-bottom: none;
}
.phase-table tbody tr:hover {
  background: var(--bg);
}
.phase-table tbody td {
  padding: 14px 16px;
  color: var(--text);
  vertical-align: middle;
  line-height: 1.6;
}
.phase-table tbody td:first-child {
  font-weight: 700;
  color: var(--navy);
  white-space: nowrap;
}
.phase-table tbody td:last-child {
  color: var(--muted);
  font-size: 13.5px;
  white-space: nowrap;
}
.phase-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  background: var(--cyan);
  color: var(--navy);
  font-size: 11px;
  font-weight: 800;
  border-radius: 50%;
  margin-right: 8px;
  font-family: "JetBrains Mono", monospace;
  flex-shrink: 0;
  vertical-align: middle;
}
@media (max-width: 600px) {
  .phase-table tbody td:last-child {
    white-space: normal;
  }
}

.policy-date {
  text-align: right;
  font-size: 13px;
  color: var(--muted);
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

@media (max-width: 640px) {
  .article-hero {
    padding: 100px 16px 56px;
  }
  .article-container {
    padding: 48px 16px 72px;
  }
  .article-content h2 {
    margin-top: 40px;
  }
  .article-img img {
    height: 200px;
  }
}