/* ===========================
   メインスタイル
   =========================== */

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

:root {
  --color-primary:    #2b9fd8;
  --color-primary-dk: #1a7aaf;
  --color-accent:     #00c9a7;
  --color-bg:         #eaf6fd;
  --color-bg2:        #f5fbff;
  --color-white:      #ffffff;
  --color-text:       #2c3e50;
  --color-text-sub:   #5a7a8a;
  --color-border:     #b8dff0;
  --color-line:       #06c755;
  --color-line-dk:    #059842;
  --radius-lg:        16px;
  --radius-md:        10px;
  --radius-sm:        6px;
  --shadow:           0 4px 24px rgba(43,159,216,.14);
  --shadow-sm:        0 2px 10px rgba(43,159,216,.10);
  --font-base:        'Noto Sans JP', 'Hiragino Sans', 'Meiryo', sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-base);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.75;
  font-size: 16px;
}

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ===========================
   Header / Hero
   =========================== */

.site-header {
  background: linear-gradient(135deg, #1a7aaf 0%, #2b9fd8 50%, #4dd0e8 100%);
  color: var(--color-white);
  text-align: center;
  padding: 70px 20px 80px;
  position: relative;
  overflow: hidden;
}

.site-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 100' preserveAspectRatio='none'%3E%3Cpath fill='%23eaf6fd' d='M0,100 C360,0 1080,0 1440,100 Z'/%3E%3C/svg%3E") bottom / 100% 60px no-repeat;
  pointer-events: none;
}

.header-badge {
  display: inline-block;
  background: rgba(255,255,255,.2);
  border: 1px solid rgba(255,255,255,.4);
  border-radius: 30px;
  padding: 4px 18px;
  font-size: .78rem;
  letter-spacing: .08em;
  margin-bottom: 18px;
}

.site-header h1 {
  font-size: clamp(1.6rem, 5vw, 2.8rem);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 14px;
  text-shadow: 0 2px 8px rgba(0,0,0,.15);
}

.site-header h1 span {
  color: #b3ebff;
}

.site-header .lead {
  font-size: clamp(.9rem, 2.5vw, 1.1rem);
  opacity: .92;
  max-width: 560px;
  margin: 0 auto 32px;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--color-line);
  color: var(--color-white);
  font-weight: 700;
  font-size: 1rem;
  padding: 14px 32px;
  border-radius: 50px;
  box-shadow: 0 4px 16px rgba(6,199,85,.4);
  transition: background .2s, transform .2s;
}

.header-cta:hover {
  background: var(--color-line-dk);
  transform: translateY(-2px);
}

.header-cta svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
  flex-shrink: 0;
}

/* ===========================
   Section 共通
   =========================== */

.section {
  padding: 72px 20px;
}

.section--alt {
  background: var(--color-bg2);
}

.section--white {
  background: var(--color-white);
}

.container {
  max-width: 860px;
  margin: 0 auto;
}

.section-title {
  text-align: center;
  font-size: clamp(1.3rem, 4vw, 1.85rem);
  font-weight: 800;
  color: var(--color-primary-dk);
  margin-bottom: 10px;
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 52px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: 2px;
  margin: 12px auto 0;
}

.section-sub {
  text-align: center;
  color: var(--color-text-sub);
  font-size: .93rem;
  margin-bottom: 48px;
}

/* ===========================
   特徴カード
   =========================== */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 20px;
  margin-top: 36px;
}

.feature-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 22px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform .2s, box-shadow .2s;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.feature-icon {
  font-size: 2.4rem;
  margin-bottom: 14px;
}

.feature-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary-dk);
  margin-bottom: 8px;
}

.feature-card p {
  font-size: .85rem;
  color: var(--color-text-sub);
  line-height: 1.65;
}

/* ===========================
   料金プラン
   =========================== */

.price-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 22px;
  margin-top: 36px;
}

.price-card {
  background: var(--color-white);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 34px 26px 30px;
  text-align: center;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: transform .2s, box-shadow .2s;
}

.price-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.price-card--highlight {
  border-color: var(--color-primary);
  background: linear-gradient(160deg, #f0f9ff 0%, #ffffff 100%);
}

.price-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  color: var(--color-white);
  font-size: .72rem;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 20px;
  white-space: nowrap;
  letter-spacing: .05em;
}

.price-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text-sub);
  margin-bottom: 18px;
}

.price-amount {
  font-size: clamp(2rem, 6vw, 2.8rem);
  font-weight: 900;
  color: var(--color-primary-dk);
  line-height: 1.1;
}

.price-amount small {
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-text-sub);
}

.price-note {
  font-size: .8rem;
  color: var(--color-text-sub);
  margin-top: 10px;
  line-height: 1.55;
}

.price-includes {
  list-style: none;
  margin-top: 20px;
  text-align: left;
  display: inline-block;
}

.price-includes li {
  font-size: .84rem;
  color: var(--color-text);
  padding: 4px 0;
  padding-left: 20px;
  position: relative;
}

.price-includes li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

.price-payment {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-top: 42px;
  text-align: center;
}

.price-payment p {
  font-size: .88rem;
  color: var(--color-text-sub);
  margin-bottom: 6px;
}

.payment-icons {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.payment-icon {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 6px 14px;
  font-size: .82rem;
  font-weight: 600;
  color: var(--color-text);
}

/* ===========================
   更新制限バナー
   =========================== */

.update-banner {
  background: linear-gradient(135deg, #e0f4ff, #d6f5ef);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 22px 28px;
  margin-top: 36px;
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.update-banner .icon {
  font-size: 2.2rem;
  flex-shrink: 0;
}

.update-banner h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary-dk);
  margin-bottom: 4px;
}

.update-banner p {
  font-size: .86rem;
  color: var(--color-text-sub);
}

/* ===========================
   フロー
   =========================== */

.flow-list {
  list-style: none;
  max-width: 600px;
  margin: 36px auto 0;
  counter-reset: flow-cnt;
}

.flow-list li {
  counter-increment: flow-cnt;
  display: flex;
  align-items: flex-start;
  gap: 18px;
  margin-bottom: 26px;
  position: relative;
}

.flow-list li:not(:last-child)::after {
  content: '';
  position: absolute;
  left: 21px;
  top: 46px;
  width: 2px;
  height: calc(100% - 10px);
  background: var(--color-border);
}

.flow-num {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: .95rem;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

.flow-body h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary-dk);
  margin-bottom: 4px;
  padding-top: 10px;
}

.flow-body p {
  font-size: .85rem;
  color: var(--color-text-sub);
}

/* ===========================
   こんな方におすすめ
   =========================== */

.recommend-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 18px;
  margin-top: 36px;
}

.recommend-card {
  background: var(--color-white);
  border-left: 5px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 22px 20px;
  box-shadow: var(--shadow-sm);
  transition: transform .2s;
}

.recommend-card:hover {
  transform: translateX(4px);
}

.recommend-num {
  font-size: .75rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: .08em;
  margin-bottom: 6px;
}

.recommend-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
}

.recommend-card p {
  font-size: .84rem;
  color: var(--color-text-sub);
  line-height: 1.6;
}

/* ===========================
   お問い合わせ (LINE QR)
   =========================== */

.contact-section {
  background: linear-gradient(135deg, #1a7aaf 0%, #2b9fd8 60%, #4dd0e8 100%);
  color: var(--color-white);
  text-align: center;
  padding: 80px 20px;
}

.contact-section .section-title {
  color: var(--color-white);
}

.contact-section .section-title::after {
  background: rgba(255,255,255,.5);
}

.contact-section .section-sub {
  color: rgba(255,255,255,.85);
  margin-bottom: 40px;
}

.contact-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}

.qr-wrapper {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 22px;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  box-shadow: 0 8px 32px rgba(0,0,0,.18);
  transition: transform .2s, box-shadow .2s;
}

.qr-wrapper:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0,0,0,.22);
}

.qr-wrapper img {
  width: 180px;
  height: 180px;
  object-fit: contain;
  border-radius: 8px;
}


.qr-label {
  font-size: .85rem;
  font-weight: 700;
  color: var(--color-text);
}

.contact-notes {
  list-style: none;
  text-align: left;
  font-size: .88rem;
  opacity: .9;
  line-height: 1.9;
}

.contact-notes li::before {
  content: '✔ ';
  opacity: .8;
}

/* ===========================
   フロートLINEボタン
   =========================== */

.float-line {
  position: fixed;
  bottom: 24px;
  right: 20px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  text-decoration: none;
  animation: float-bounce 3s ease-in-out infinite;
}

.float-line__circle {
  width: 54px;
  height: 54px;
  background: var(--color-line);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(6,199,85,.45);
  transition: background .2s, transform .15s;
}

.float-line:hover .float-line__circle {
  background: var(--color-line-dk);
  transform: scale(1.08);
}

.float-line__circle svg {
  width: 30px;
  height: 30px;
  fill: var(--color-white);
}

.float-line__label {
  background: rgba(0,0,0,.55);
  color: var(--color-white);
  font-size: .65rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 10px;
  white-space: nowrap;
  letter-spacing: .04em;
}

@keyframes float-bounce {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-6px); }
}

/* ===========================
   Footer
   =========================== */

.site-footer {
  background: #1a2e3c;
  color: rgba(255,255,255,.55);
  text-align: center;
  font-size: .8rem;
  padding: 28px 20px 80px;
  line-height: 1.9;
}

.site-footer a {
  color: rgba(255,255,255,.7);
}

/* ===========================
   Utilities
   =========================== */

.tag {
  display: inline-block;
  background: #d6f0fc;
  color: var(--color-primary-dk);
  border-radius: 20px;
  padding: 3px 12px;
  font-size: .75rem;
  font-weight: 600;
  margin: 3px 2px;
}

.text-center { text-align: center; }

/* ===========================
   Responsive
   =========================== */

@media (max-width: 600px) {
  .site-header {
    padding: 52px 16px 70px;
  }

  .section {
    padding: 52px 16px;
  }

  .price-grid,
  .feature-grid,
  .recommend-grid {
    grid-template-columns: 1fr;
  }

  .update-banner {
    flex-direction: column;
    text-align: center;
  }

  .flow-list li:not(:last-child)::after {
    left: 21px;
  }
}