/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 16px; line-height: 1.75;
  color: #1a1a1a; background: #fff;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; padding: 0; margin: 0; }
h1, h2, h3, h4, p { margin: 0; }
table { border-collapse: collapse; width: 100%; }

:root {
  --navy: #0f3a5f;
  --navy-light: #1c5a8e;
  --yellow: #ffb800;
  --yellow-dark: #e09f00;
  --bg-light: #f5f7fa;
  --border: #dde4ec;
  --text: #1a1a1a;
  --text-soft: #5a6a7e;
  --shadow: 0 8px 28px rgba(15, 58, 95, 0.08);
  --shadow-strong: 0 20px 60px rgba(15, 58, 95, 0.15);
}

/* ===== LAYOUT ===== */
.container { width: min(1100px, 92%); margin: 0 auto; }
.container--narrow { max-width: 760px; }
.section { padding: 96px 0; }
.section--alt { background: var(--bg-light); }
.section-eyebrow {
  text-align: center; font-size: 0.875rem;
  letter-spacing: 0.18em; color: var(--yellow-dark);
  font-weight: 700; margin-bottom: 12px;
}
.section-title {
  text-align: center;
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 900; color: var(--navy);
  letter-spacing: 0.02em; margin-bottom: 16px;
  line-height: 1.4;
}
.section-lead {
  text-align: center; color: var(--text-soft);
  margin-bottom: 56px; font-size: 1rem; line-height: 1.8;
}

/* ===== HEADER ===== */
.header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header__inner {
  width: min(1100px, 92%); margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0; gap: 16px;
}
.header__logo { display: flex; align-items: center; gap: 12px; }
.header__logo-mark {
  width: 44px; height: 44px;
  background: linear-gradient(135deg, var(--navy), var(--navy-light));
  color: var(--yellow);
  display: flex; align-items: center; justify-content: center;
  border-radius: 10px;
  font-family: 'Inter', serif;
  font-weight: 800; font-size: 1.5rem;
  box-shadow: 0 4px 14px rgba(15, 58, 95, 0.2);
}
.header__logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.header__logo-name { font-size: 1rem; font-weight: 800; color: var(--navy); }
.header__logo-sub { font-size: 0.7rem; color: var(--text-soft); }

.header__actions { display: flex; align-items: center; gap: 8px; }
.header__mail {
  padding: 8px 14px; border-radius: 8px;
  border: 1.5px solid var(--navy); color: var(--navy);
  font-size: 0.85rem; font-weight: 700;
  display: inline-flex; align-items: center; gap: 6px;
  transition: all 0.2s;
}
.header__mail:hover { background: var(--navy); color: #fff; }
.header__call {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--yellow); color: var(--navy);
  padding: 8px 14px; border-radius: 8px;
  font-weight: 800; transition: all 0.2s;
}
.header__call:hover { background: var(--yellow-dark); transform: translateY(-1px); }
.header__call-text { display: flex; flex-direction: column; line-height: 1.15; }
.header__call-label { font-size: 0.65rem; opacity: 0.8; }
.header__call-number {
  font-family: 'Inter', sans-serif; font-weight: 800;
  font-size: 0.95rem; letter-spacing: 0.02em;
}

/* ===== HERO ===== */
.hero {
  position: relative; isolation: isolate;
  padding: 120px 0 100px; overflow: hidden;
  color: #fff;
}
.hero__bg {
  position: absolute; inset: 0; z-index: -2;
  background: linear-gradient(135deg, #0a2440 0%, #0f3a5f 50%, #1c5a8e 100%);
}
.hero__img {
  position: absolute; inset: 0;
  width: 100%; height: 100%; object-fit: cover;
  opacity: 0.45; mix-blend-mode: luminosity;
}
.hero__overlay {
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 30% 50%, rgba(255,184,0,0.15) 0%, transparent 60%),
    linear-gradient(180deg, rgba(10,36,64,0.5) 0%, rgba(15,58,95,0.7) 100%);
  z-index: 0;
}
.hero__inner {
  width: min(1100px, 92%); margin: 0 auto;
  position: relative; z-index: 1;
  text-align: center;
}
.hero__badge {
  display: inline-flex; align-items: center; gap: 10px;
  background: rgba(255, 184, 0, 0.18);
  border: 1px solid rgba(255, 184, 0, 0.5);
  padding: 8px 18px; border-radius: 999px;
  font-size: 0.95rem; font-weight: 700;
  margin-bottom: 28px;
}
.hero__badge strong { color: var(--yellow); font-size: 1.05rem; }

.hero__title {
  font-size: clamp(1.75rem, 5.5vw, 3.25rem);
  font-weight: 900; line-height: 1.4;
  margin-bottom: 24px; letter-spacing: 0.03em;
}
.hero__title-strong {
  color: var(--yellow);
  position: relative;
  display: inline-block;
}
.hero__title-strong::after {
  content: ''; position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 4px; background: var(--yellow); opacity: 0.4;
  border-radius: 4px;
}
.hero__lead {
  font-size: clamp(0.95rem, 2.2vw, 1.05rem);
  line-height: 1.9; margin-bottom: 36px; opacity: 0.95;
}
.hero__cta {
  display: flex; flex-direction: column;
  align-items: center; gap: 14px; margin-bottom: 36px;
}
.hero__features {
  display: flex; flex-wrap: wrap; justify-content: center;
  gap: 12px 24px; font-size: 0.875rem;
}
.hero__features li { display: inline-flex; align-items: center; gap: 6px; }
.hero__features span { color: var(--yellow); font-weight: 900; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 10px; font-weight: 700; border-radius: 12px;
  padding: 14px 28px; transition: all 0.2s;
  text-align: center; font-size: 1rem;
}
.btn--primary {
  background: var(--yellow); color: var(--navy);
  box-shadow: 0 8px 24px rgba(255, 184, 0, 0.4);
  font-weight: 800;
}
.btn--primary:hover {
  background: var(--yellow-dark); transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(255, 184, 0, 0.5);
}
.btn--ghost {
  background: rgba(255,255,255,0.1); color: #fff;
  border: 1.5px solid rgba(255,255,255,0.5);
}
.btn--ghost:hover { background: rgba(255,255,255,0.2); }
.btn--lg { padding: 18px 36px; font-size: 1.1rem; min-width: 280px; }
.btn--block { width: 100%; }
.btn__icon { font-size: 1.2rem; }

/* ===== WHY ===== */
.why__grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px; margin-top: 48px;
}
.why__card {
  background: #fff; border-radius: 18px;
  overflow: hidden; box-shadow: var(--shadow);
  border: 1px solid var(--border);
  display: flex; flex-direction: column;
  transition: all 0.3s;
}
.why__card:hover {
  transform: translateY(-4px); box-shadow: var(--shadow-strong);
}
.why__img {
  width: 100%; height: 200px; overflow: hidden;
  background: linear-gradient(135deg, var(--navy), var(--navy-light));
  position: relative;
}
.why__img img {
  width: 100%; height: 100%; object-fit: cover;
}
.why__num {
  font-family: 'Inter', sans-serif;
  font-size: 0.875rem; font-weight: 800;
  color: var(--yellow-dark); padding: 20px 28px 0;
  letter-spacing: 0.1em;
}
.why__card h3 {
  font-size: 1.25rem; font-weight: 800; color: var(--navy);
  padding: 8px 28px 12px; line-height: 1.5;
}
.why__card p {
  font-size: 0.95rem; color: var(--text-soft);
  padding: 0 28px 28px; line-height: 1.85;
}

/* ===== SERVICE ===== */
.service__grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}
.service__card {
  background: #fff; border-radius: 16px;
  overflow: hidden; transition: all 0.3s;
  border: 1px solid var(--border);
  display: flex; flex-direction: column;
}
.service__card:hover {
  transform: translateY(-3px); box-shadow: var(--shadow);
}
.service__img {
  width: 100%; height: 160px; overflow: hidden;
  background: var(--navy-light);
}
.service__img img { width: 100%; height: 100%; object-fit: cover; }
.service__card h3 {
  font-size: 1.05rem; font-weight: 800; color: var(--navy);
  padding: 20px 24px 8px; border-left: 4px solid var(--yellow);
  margin-left: 24px;
  display: inline-block;
  padding-left: 12px;
  margin-top: 20px;
}
.service__card--text h3 { padding-top: 0; }
.service__card--text { padding-top: 28px; }
.service__card p {
  font-size: 0.9rem; color: var(--text-soft);
  padding: 8px 24px 24px; line-height: 1.8;
}

/* ===== WORKS ===== */
.works__grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}
.works__item {
  margin: 0; border-radius: 14px; overflow: hidden;
  box-shadow: var(--shadow);
  background: var(--navy-light);
}
.works__item img {
  width: 100%; height: 220px; object-fit: cover;
  transition: transform 0.4s;
}
.works__item:hover img { transform: scale(1.05); }
.works__item figcaption {
  padding: 14px 18px; font-size: 0.875rem; font-weight: 700;
  color: var(--navy); background: #fff;
}
.works__note {
  text-align: center; font-size: 0.75rem;
  color: var(--text-soft); margin-top: 24px;
}

/* ===== FLOW ===== */
.flow__list {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}
.flow__step {
  background: #fff; border-radius: 14px;
  padding: 28px 24px; border: 1px solid var(--border);
}
.flow__num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--navy); color: var(--yellow);
  font-family: 'Inter', sans-serif; font-weight: 800;
  font-size: 1.2rem; margin-bottom: 16px;
}
.flow__step h3 {
  font-size: 1.05rem; font-weight: 800;
  color: var(--navy); margin-bottom: 8px;
}
.flow__step p {
  font-size: 0.875rem; color: var(--text-soft); line-height: 1.7;
}

/* ===== VOICE ===== */
.voice__grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.voice__card {
  background: #fff; border: 1px solid var(--border);
  border-radius: 14px; padding: 32px 28px; box-shadow: var(--shadow);
  text-align: center;
}
.voice__card--featured {
  background: linear-gradient(180deg, #fff 0%, #fffbf0 100%);
  border: 2px solid var(--yellow);
}
.voice__stars {
  color: var(--yellow); font-size: 1.4rem;
  letter-spacing: 0.1em; margin-bottom: 16px;
}
.voice__text {
  font-size: 1.1rem; line-height: 1.8;
  color: var(--text); margin-bottom: 14px;
  font-weight: 500;
}
.voice__meta {
  font-size: 0.875rem; color: var(--text-soft);
}
.voice__note {
  text-align: center; font-size: 0.75rem;
  color: var(--text-soft); margin-top: 24px;
}

/* ===== COMPANY TABLE ===== */
.company__table {
  margin-top: 32px;
  background: #fff; border-radius: 14px;
  overflow: hidden; box-shadow: var(--shadow);
}
.company__table tr { border-bottom: 1px solid var(--border); }
.company__table tr:last-child { border-bottom: none; }
.company__table th {
  background: var(--navy); color: #fff;
  font-weight: 700; font-size: 0.875rem;
  padding: 18px 24px; text-align: left;
  width: 30%; vertical-align: top;
}
.company__table td {
  padding: 18px 24px; font-size: 0.95rem;
  line-height: 1.8;
}
.company__table a { color: var(--navy-light); font-weight: 700; }

/* ===== CONTACT CHANNELS ===== */
.contact__channels {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px; margin: 40px 0 32px;
}
.contact__channel {
  display: flex; align-items: center; gap: 16px;
  padding: 22px 24px; border-radius: 14px;
  transition: all 0.2s; box-shadow: var(--shadow);
}
.contact__channel--mail {
  background: linear-gradient(135deg, var(--navy), var(--navy-light));
  color: #fff;
}
.contact__channel--call {
  background: linear-gradient(135deg, var(--yellow), var(--yellow-dark));
  color: var(--navy);
}
.contact__channel:hover { transform: translateY(-3px); }
.contact__channel-icon {
  font-size: 2rem;
  width: 56px; height: 56px;
  background: rgba(255,255,255,0.18);
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.contact__channel--call .contact__channel-icon {
  background: rgba(255,255,255,0.3);
}
.contact__channel-text { display: flex; flex-direction: column; line-height: 1.3; }
.contact__channel-label { font-size: 0.8rem; opacity: 0.9; font-weight: 600; }
.contact__channel-value {
  font-family: 'Inter', sans-serif;
  font-size: 1.15rem; font-weight: 800;
  letter-spacing: 0.02em; margin-top: 4px;
}

/* ===== FORM ===== */
.form { display: flex; flex-direction: column; gap: 18px; }
.form__row { display: flex; flex-direction: column; gap: 6px; }
.form__label {
  font-size: 0.875rem; font-weight: 700; color: var(--navy);
}
.form__required { color: var(--yellow-dark); }
.form__input {
  width: 100%; padding: 14px 16px;
  border: 1px solid var(--border); border-radius: 10px;
  font: inherit; background: #fff;
  transition: all 0.2s;
}
.form__input:focus {
  outline: none; border-color: var(--yellow);
  box-shadow: 0 0 0 3px rgba(255,184,0,0.2);
}
.form__textarea { resize: vertical; min-height: 120px; }
.form__note {
  font-size: 0.75rem; color: var(--text-soft);
  text-align: center; margin-top: 4px;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--navy); color: rgba(255,255,255,0.85);
  padding: 56px 0 28px; font-size: 0.875rem;
}
.footer__grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 32px; margin-bottom: 36px;
}
.footer__brand-name {
  font-size: 1.3rem; font-weight: 800;
  color: #fff; margin-bottom: 4px;
}
.footer__brand-sub {
  font-size: 0.85rem; color: rgba(255,255,255,0.65);
}
.footer__info p { margin-bottom: 6px; line-height: 1.8; }
.footer__info a { color: var(--yellow); font-weight: 700; }
.footer__copy {
  text-align: center; font-size: 0.75rem;
  color: rgba(255,255,255,0.5);
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 24px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 720px) {
  .section { padding: 64px 0; }
  .header__logo-sub { display: none; }
  .header__mail { padding: 6px 10px; font-size: 0.75rem; }
  .header__call-label { display: none; }
  .hero { padding: 80px 0 80px; }
  .footer__grid { grid-template-columns: 1fr; gap: 20px; }
  .company__table th { width: 35%; padding: 14px 16px; font-size: 0.8rem; }
  .company__table td { padding: 14px 16px; font-size: 0.9rem; }
}
@media (min-width: 721px) {
  .hero__cta { flex-direction: row; justify-content: center; }
}