/* 公開ページ（/ と /en/）共通スタイル。外部フォント・外部CSSは使わない。 */
:root {
  color-scheme: light;
  --navy: #06172a;
  --ink: #0f2233;
  --muted: #5b7384;
  --blue: #1565c0;
  --teal: #00a6a6;
  --mint: #7cf0dc;
  --amber: #ffb84d;
  --surface: #ffffff;
  --ground: #f5f8fb;
  --line: #e0e8ee;
  --brand-gradient: linear-gradient(120deg, var(--blue), var(--teal));
  font-family:
    "Inter",
    system-ui,
    -apple-system,
    "Segoe UI",
    "Hiragino Sans",
    "Noto Sans JP",
    "Yu Gothic UI",
    sans-serif;
  color: var(--ink);
  background: var(--ground);
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  line-height: 1.75;
}
[hidden] {
  display: none !important;
}
.wrap {
  width: min(100% - 40px, 1140px);
  margin-inline: auto;
}
a {
  color: inherit;
}
:focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: 3px;
  border-radius: 6px;
}
svg.icon {
  width: 1em;
  height: 1em;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ---------- ヘッダー ---------- */
.site-header {
  position: absolute;
  inset: 0 0 auto 0;
  z-index: 2;
  color: #fff;
}
.site-header .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 20px 0;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-decoration: none;
  white-space: nowrap;
}
.brand img {
  width: 34px;
  height: 34px;
  border-radius: 9px;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
  font-size: 0.93rem;
}
.site-nav a.link {
  color: #c9d9e6;
  text-decoration: none;
  font-weight: 600;
}
.site-nav a.link:hover {
  color: #fff;
}
.lang {
  display: inline-flex;
  padding: 3px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
}
.lang a {
  white-space: nowrap;
  padding: 4px 12px;
  border-radius: 999px;
  color: #c9d9e6;
  font-size: 0.82rem;
  font-weight: 700;
  text-decoration: none;
}
.lang a[aria-current="true"] {
  color: var(--navy);
  background: #fff;
}

/* ---------- ヒーロー ---------- */
.hero {
  position: relative;
  overflow: hidden;
  color: #fff;
  background:
    radial-gradient(900px 520px at 88% -10%, #1565c099, transparent 62%),
    radial-gradient(760px 520px at -6% 108%, #00a6a680, transparent 60%),
    var(--navy);
  padding: clamp(120px, 15vw, 172px) 0 clamp(72px, 9vw, 116px);
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at 50% 30%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(
    ellipse at 50% 30%,
    #000 20%,
    transparent 75%
  );
  pointer-events: none;
}
.routes {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.45;
}
.routes path {
  fill: none;
  stroke: url(#route);
  stroke-width: 1.6;
  stroke-dasharray: 3 9;
  stroke-linecap: round;
  animation: travel 26s linear infinite;
}
.routes circle {
  fill: var(--mint);
}
@keyframes travel {
  to {
    stroke-dashoffset: -480;
  }
}
.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 410px);
  gap: clamp(32px, 6vw, 76px);
  align-items: center;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 22px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(124, 240, 220, 0.1);
  border: 1px solid rgba(124, 240, 220, 0.32);
  color: var(--mint);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}
.eyebrow::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 4px rgba(124, 240, 220, 0.2);
}
h1 {
  margin: 0 0 24px;
  font-size: clamp(2.1rem, 5.2vw, 3.75rem);
  line-height: 1.18;
  letter-spacing: -0.02em;
  word-break: auto-phrase;
  text-wrap: balance;
}
h1 em {
  font-style: normal;
  background: linear-gradient(100deg, #8fd0ff, var(--mint));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.lead {
  max-width: 600px;
  margin: 0 0 30px;
  font-size: clamp(1rem, 1.6vw, 1.14rem);
  color: #c9d9e6;
}
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.chips li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.14);
  font-size: 0.86rem;
  font-weight: 600;
  color: #e3edf4;
}
.chips svg {
  color: var(--mint);
  font-size: 1.05rem;
}

/* ---------- ログインカード ---------- */
.login-card {
  position: relative;
  padding: 34px 30px 28px;
  border-radius: 24px;
  background: var(--surface);
  color: var(--ink);
  box-shadow:
    0 40px 90px rgba(0, 0, 0, 0.42),
    0 0 0 1px rgba(255, 255, 255, 0.08);
  scroll-margin-top: 24px;
}
.login-card::before {
  content: "";
  position: absolute;
  inset: 0 28px auto 28px;
  height: 4px;
  border-radius: 0 0 6px 6px;
  background: var(--brand-gradient);
}
.login-card h2 {
  margin: 0 0 4px;
  font-size: 1.4rem;
  line-height: 1.4;
}
.login-card .sub {
  margin: 0 0 22px;
  color: var(--muted);
  font-size: 0.9rem;
}
.field {
  display: block;
  margin-bottom: 16px;
}
.field span {
  display: block;
  margin-bottom: 6px;
  font-size: 0.84rem;
  font-weight: 700;
  color: #34495a;
}
.field input {
  width: 100%;
  padding: 13px 14px;
  border: 1.5px solid var(--line);
  border-radius: 12px;
  background: #f8fbfd;
  color: var(--ink);
  font: inherit;
  font-size: 1rem;
  transition:
    border-color 0.15s,
    box-shadow 0.15s,
    background 0.15s;
}
.field input:focus {
  outline: none;
  border-color: var(--blue);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(21, 101, 192, 0.14);
}
.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  padding: 13px 24px;
  border: 0;
  border-radius: 12px;
  background: var(--brand-gradient);
  color: #fff;
  font: inherit;
  font-weight: 800;
  letter-spacing: 0.02em;
  text-decoration: none;
  cursor: pointer;
  box-shadow: 0 10px 24px rgba(21, 101, 192, 0.3);
  transition:
    transform 0.15s,
    box-shadow 0.15s,
    filter 0.15s;
}
.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 30px rgba(21, 101, 192, 0.38);
}
.btn[disabled] {
  cursor: progress;
  filter: saturate(0.5) opacity(0.75);
  transform: none;
}
.btn.block {
  width: 100%;
}
.btn.light {
  background: #fff;
  color: var(--navy);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}
.form-error {
  margin: 0 0 14px;
  padding: 10px 12px;
  border-radius: 10px;
  background: #fdecec;
  color: #a12626;
  font-size: 0.9rem;
  font-weight: 600;
}
.login-note {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 0.82rem;
  text-align: center;
}
.signed-in p {
  margin: 0 0 20px;
  color: #34495a;
}
.text-link {
  display: block;
  margin: 14px auto 0;
  padding: 4px;
  border: 0;
  background: none;
  color: var(--muted);
  font: inherit;
  font-size: 0.86rem;
  text-decoration: underline;
  cursor: pointer;
}

/* ---------- セクション共通 ---------- */
section.block {
  padding: clamp(60px, 8vw, 104px) 0;
}
section.block.alt {
  background: var(--surface);
  border-block: 1px solid var(--line);
}
.kicker {
  margin: 0 0 10px;
  color: var(--teal);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
h2.title {
  margin: 0 0 12px;
  font-size: clamp(1.55rem, 3.4vw, 2.35rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
  word-break: auto-phrase;
}
.section-lead {
  max-width: 660px;
  margin: 0 0 44px;
  color: var(--muted);
}

/* ---------- 業務の流れ ---------- */
.flow {
  position: relative;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}
.flow::before {
  content: "";
  position: absolute;
  top: 27px;
  left: 4%;
  right: 4%;
  height: 2px;
  background: linear-gradient(90deg, var(--blue), var(--teal));
  opacity: 0.25;
}
.flow li {
  position: relative;
  counter-increment: step;
}
.flow .dot {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  margin-bottom: 16px;
  border-radius: 18px;
  background: var(--brand-gradient);
  color: #fff;
  font-size: 1.5rem;
  box-shadow: 0 10px 22px rgba(21, 101, 192, 0.26);
}
.flow strong {
  display: block;
  font-size: 1.04rem;
  line-height: 1.5;
}
.flow strong::before {
  content: counter(step, decimal-leading-zero);
  margin-right: 8px;
  color: var(--teal);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
}
.flow p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.65;
}

/* ---------- カード ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.card {
  padding: 28px 26px;
  border-radius: 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  transition:
    transform 0.2s,
    box-shadow 0.2s,
    border-color 0.2s;
}
.card:hover {
  transform: translateY(-3px);
  border-color: #c6dcf0;
  box-shadow: 0 18px 44px rgba(15, 34, 51, 0.09);
}
.alt .card {
  background: var(--ground);
}
.card .ico {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-bottom: 18px;
  border-radius: 13px;
  background: linear-gradient(135deg, #e3f0fd, #dff7f4);
  color: var(--blue);
  font-size: 1.4rem;
}
.card h3 {
  margin: 0 0 8px;
  font-size: 1.12rem;
  line-height: 1.5;
}
.card p {
  margin: 0;
  color: #48606f;
  font-size: 0.95rem;
}

/* ---------- 締めのCTA ---------- */
.cta-box {
  position: relative;
  overflow: hidden;
  padding: clamp(40px, 6vw, 64px) 28px;
  border-radius: 28px;
  background:
    radial-gradient(520px 300px at 85% 0%, #1565c0aa, transparent 65%),
    radial-gradient(480px 300px at 0% 100%, #00a6a688, transparent 62%),
    var(--navy);
  color: #fff;
  text-align: center;
}
.cta-box h2 {
  margin: 0 0 12px;
  font-size: clamp(1.45rem, 3.2vw, 2.1rem);
  line-height: 1.35;
}
.cta-box p {
  max-width: 540px;
  margin: 0 auto 28px;
  color: #c9d9e6;
}

.site-footer {
  padding: 30px 0 44px;
  color: var(--muted);
  font-size: 0.88rem;
}
.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
}

@media (max-width: 1000px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .login-card {
    max-width: 460px;
  }
  .flow {
    grid-template-columns: repeat(3, 1fr);
    row-gap: 34px;
  }
  .flow::before {
    display: none;
  }
  .grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 640px) {
  .site-nav a.link {
    display: none;
  }
  /* ハーバートーク導線（トップ・お問い合わせ・入会・ログイン）はスマホでも出す。 */
  .site-nav {
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 6px 12px;
    font-size: 0.8rem;
  }
  .site-nav a.link.key {
    display: inline;
  }
  .brand {
    gap: 8px;
    font-size: 0.86rem;
    letter-spacing: 0.04em;
  }
  .brand img {
    width: 30px;
    height: 30px;
  }
  .lang a {
    padding: 4px 9px;
    font-size: 0.76rem;
  }
  .hero {
    padding-top: 104px;
  }
  .chips {
    display: none;
  }
  .flow {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid {
    grid-template-columns: 1fr;
  }
  .login-card {
    padding: 30px 22px 24px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .routes path {
    animation: none;
  }
  .btn,
  .card {
    transition: none;
  }
}