/* ============================================================
   style.css — ビジネスタンク LP
   ============================================================ */
@import url("https://fonts.googleapis.com/css2?family=Zen+Kaku+Gothic+New:wght@400;500;700;900&family=Outfit:wght@400;600;700;800&display=swap");

/* ============================================================
   Variables
   ============================================================ */
:root {
  --navy-deep: rgb(2, 4, 28);
  --navy: rgb(4, 7, 44);
  --navy-mid: rgb(10, 17, 80);
  --navy-light: rgb(22, 38, 130);
  --white: #ffffff;
  --off-white: #f7f9fd;
  --bg-section: #eef1f9;
  --orange-grad: linear-gradient(135deg, #ff7235 0%, #f04c12 55%, #d43800 100%);
  --orange: #f04c12;
  --orange-lt: #ff7a44;
  --orange-dk: #c43200;
  --text-dark: rgb(2, 4, 28);
  --text-mid: rgb(60, 72, 120);
  --text-light: rgb(130, 145, 185);
  --border: rgba(2, 4, 28, 0.09);
  --border-mid: rgba(2, 4, 28, 0.16);
  --font-en: "Outfit", sans-serif;
  --font-ja: "Zen Kaku Gothic New", "Hiragino Sans", Meiryo, sans-serif;
  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 22px;
  --r-xl: 32px;
  --sh-sm: 0 2px 12px rgba(2, 4, 28, 0.07);
  --sh-md: 0 6px 28px rgba(2, 4, 28, 0.11);
  --sh-lg: 0 16px 52px rgba(2, 4, 28, 0.16);
}

/* ============================================================
   Reset & Base
   ============================================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-ja);
  font-size: 15px;
  color: var(--text-dark);
  background: var(--white);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img {
  max-width: 100%;
  display: block;
}
.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 40px;
}

/* 英字フォント */
.en,
.section-eyebrow,
.stat-num,
.number-value,
.feature-num,
.feature-tag,
.feature-header .feature-tag,
.hero-label,
.hero-badge-num,
.nav-logo-en,
.footer-logo-en,
.footer-copy,
.trust-bg-text,
.num-accent {
  font-family: var(--font-en);
}

/* タイトル内数字装飾 */
.num-accent {
  font-size: 42px;
  font-weight: 800;
  color: var(--orange);
  display: inline-block;
  line-height: 1;
  vertical-align: baseline;
  letter-spacing: -0.02em;
}

/* ============================================================
   Animations
   ============================================================ */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes slideFromLeft {
  from {
    opacity: 0;
    transform: translateX(-36px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}
@keyframes slideFromRight {
  from {
    opacity: 0;
    transform: translateX(36px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}
@keyframes pulseRing {
  0% {
    box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.45);
  }
  70% {
    box-shadow: 0 0 0 22px rgba(255, 255, 255, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(255, 255, 255, 0);
  }
}
@keyframes iconPop {
  0% {
    transform: scale(0.6) rotate(-8deg);
    opacity: 0;
  }
  70% {
    transform: scale(1.08) rotate(2deg);
    opacity: 1;
  }
  100% {
    transform: scale(1) rotate(0deg);
    opacity: 1;
  }
}
@keyframes scaleIn {
  from {
    transform: scale(0.92);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}
@keyframes heroLineGrow {
  from {
    height: 0;
    opacity: 0;
  }
  to {
    height: 100%;
    opacity: 1;
  }
}
@keyframes shimmerSlide {
  0% {
    transform: translateX(-100%) skewX(-15deg);
  }
  100% {
    transform: translateX(200%) skewX(-15deg);
  }
}
@keyframes floatY {
  0%,
  100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-8px);
  }
}
@keyframes spCtaIn {
  from {
    transform: translateY(100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* ============================================================
   Scroll Fade
   ============================================================ */
.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.65s ease,
    transform 0.65s ease;
  will-change: opacity, transform;
}
.fade-up.in {
  opacity: 1;
  transform: translateY(0);
}

.pain-grid > .pain-card:nth-child(1),
.feature-grid > .feature-card:nth-child(1),
.trust-numbers > .number-card:nth-child(1) {
  transition-delay: 0.05s;
}
.pain-grid > .pain-card:nth-child(2),
.feature-grid > .feature-card:nth-child(2),
.trust-numbers > .number-card:nth-child(2) {
  transition-delay: 0.17s;
}
.pain-grid > .pain-card:nth-child(3),
.feature-grid > .feature-card:nth-child(3),
.trust-numbers > .number-card:nth-child(3) {
  transition-delay: 0.29s;
}
.pain-grid > .pain-card:nth-child(4),
.feature-grid > .feature-card:nth-child(4) {
  transition-delay: 0.41s;
}
.feature-grid > .feature-card:nth-child(5) {
  transition-delay: 0.53s;
}

.title-bar {
  width: 0;
  height: 2px;
  background: var(--orange);
  margin: 0 auto 18px;
  border-radius: 1px;
  opacity: 0;
  transition:
    width 0.55s ease 0.2s,
    opacity 0.55s ease 0.2s;
}
.fade-up.in .title-bar {
  width: 36px;
  opacity: 1;
}
.title-bar.in {
  width: 36px;
  opacity: 1;
}

/* ============================================================
   Section Common
   ============================================================ */
.section-eyebrow {
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--navy-light);
  text-align: center;
  display: block;
  margin-bottom: 8px;
}
.section-eyebrow--light {
  color: rgba(200, 220, 255, 0.9);
}

.section-title {
  font-size: 32px;
  font-weight: 900;
  text-align: center;
  color: var(--navy-deep);
  margin-bottom: 16px;
  line-height: 1.35;
}
.section-title--light {
  color: var(--white);
}

.section-lead {
  text-align: center;
  color: var(--text-mid);
  font-size: 16px;
  font-weight: 500;
  margin: 0 0 52px;
  line-height: 1.95;
}
.section-lead--light {
  color: rgba(255, 255, 255, 0.92);
}

/* ============================================================
   Buttons
   ============================================================ */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  background: var(--orange-grad);
  color: var(--white);
  font-family: var(--font-ja);
  font-size: 16px;
  font-weight: 700;
  text-decoration: none;
  padding: 17px 42px;
  border-radius: var(--r-md);
  box-shadow: 0 6px 22px rgba(240, 76, 18, 0.35);
  border: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition:
    opacity 0.2s,
    transform 0.2s,
    box-shadow 0.2s;
}
.btn-primary::after {
  content: "";
  position: absolute;
  top: 0;
  left: -80%;
  width: 60%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.22),
    transparent
  );
  transform: skewX(-15deg);
  animation: shimmerSlide 3s ease-in-out infinite;
}
.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
  box-shadow: 0 10px 32px rgba(240, 76, 18, 0.45);
}
.icon-arrow {
  transition: transform 0.2s;
}
.btn-primary:hover .icon-arrow {
  transform: translateX(4px);
}

.btn-primary--invert {
  background: var(--white);
  color: var(--orange-dk);
  box-shadow: 0 6px 28px rgba(0, 0, 0, 0.2);
}
.btn-primary--invert::after {
  background: linear-gradient(
    90deg,
    transparent,
    rgba(240, 76, 18, 0.08),
    transparent
  );
}
.btn-primary--invert:hover {
  opacity: 1;
  background: var(--off-white);
  box-shadow: 0 10px 36px rgba(0, 0, 0, 0.28);
}

/* ============================================================
   Header (PC: sticky 白背景 / SP: fixed 透明)
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 300;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 62px;
  box-shadow: var(--sh-sm);
  transition:
    background 0.3s,
    box-shadow 0.3s;
}
.nav-logo {
  display: flex;
  align-items: baseline;
  gap: 12px;
  text-decoration: none;
}
.nav-logo-en {
  font-size: 22px;
  font-weight: 400;
  color: var(--navy-deep);
  letter-spacing: 0.22em;
  transition: color 0.3s;
}
.nav-logo-ja {
  font-size: 11px;
  font-weight: 400;
  color: var(--text-light);
  letter-spacing: 0.1em;
  transition: color 0.3s;
}
.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--orange-grad);
  color: var(--white);
  font-family: var(--font-ja);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  padding: 9px 22px;
  border-radius: var(--r-sm);
  box-shadow: 0 4px 14px rgba(240, 76, 18, 0.28);
  transition:
    opacity 0.2s,
    transform 0.2s;
}
.header-cta:hover {
  opacity: 0.88;
  transform: translateY(-1px);
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  background: var(--navy-deep);
  background-image: url("./images/image_bg.jpg");
  background-size: cover;
  background-position: center;
  position: relative;
  min-height: 86vh;
  display: flex;
  align-items: center;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    110deg,
    rgba(2, 4, 28, 0.93) 0%,
    rgba(2, 4, 28, 0.82) 48%,
    rgba(2, 4, 28, 0.5) 100%
  );
}
.hero::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(
    to bottom,
    transparent 10%,
    var(--orange) 50%,
    transparent 90%
  );
  z-index: 2;
  animation: heroLineGrow 1.2s ease 0.2s both;
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 52px;
  align-items: center;
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 80px 40px;
}

.hero-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--orange-lt);
  margin-bottom: 20px;
  animation: slideFromLeft 0.7s ease 0.3s both;
}
.hero-label::before {
  content: "";
  display: block;
  width: 28px;
  height: 1px;
  background: var(--orange);
}

.hero h1 {
  font-size: 42px;
  font-weight: 900;
  color: var(--white);
  line-height: 1.3;
  margin-bottom: 22px;
  animation: fadeUp 0.75s ease 0.5s both;
}
.hero h1 em {
  font-style: normal;
  color: #8fb8ff;
}

.hero-desc {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.75);
  font-weight: 400;
  line-height: 1.95;
  margin-bottom: 24px;
  animation: fadeUp 0.75s ease 0.7s both;
}

.hero-guarantee {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--r-sm);
  padding: 10px 18px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
  font-weight: 400;
  margin-bottom: 32px;
  background: rgba(255, 255, 255, 0.06);
  animation: fadeUp 0.75s ease 0.9s both;
}
.hero-guarantee i {
  color: #6ee887;
  font-size: 13px;
}

/* ---- ヒーロー実績バッジ ---- */
.hero-badges {
  display: flex;
  align-items: stretch;
  gap: 0;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--r-lg);
  overflow: hidden;
  backdrop-filter: blur(6px);
  animation: fadeUp 0.75s ease 1.05s both;
}
.hero-badge-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 18px 12px;
  gap: 4px;
  position: relative;
}
.hero-badge-divider {
  width: 1px;
  background: rgba(255, 255, 255, 0.15);
  flex-shrink: 0;
  align-self: stretch;
}
.hero-badge-num {
  font-size: 28px;
  font-weight: 700;
  color: var(--white);
  line-height: 1;
  letter-spacing: -0.01em;
  display: block;
}
.hero-badge-unit {
  font-size: 14px;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.55);
  margin-left: 1px;
  vertical-align: baseline;
}
.hero-badge-label {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.5);
  font-weight: 500;
  letter-spacing: 0.02em;
  font-family: var(--font-ja);
  text-align: center;
}
/* 上部のオレンジアクセントライン */
.hero-badge-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 20%;
  right: 20%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--orange), transparent);
  opacity: 0.6;
}

/* フォームパネル */
.hero-form-panel {
  background: var(--white);
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow:
    0 28px 72px rgba(0, 0, 0, 0.36),
    0 0 0 1px rgba(255, 255, 255, 0.06);
  display: flex;
  flex-direction: column;
  animation: slideFromRight 0.85s ease 0.45s both;
}

/* フォーム非表示時の代替案内（パネル内・白背景） */
.form-fallback {
  font-size: 11px;
  font-weight: 400;
  color: var(--text-light);
  text-align: center;
  padding: 8px 16px 6px;
  margin: 0;
  line-height: 1.7;
  background: var(--white);
  border-bottom: 1px solid var(--border);
}
.form-fallback a {
  color: var(--navy-light);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color 0.2s;
}
.form-fallback a:hover {
  color: var(--orange);
}

.hero-form-header {
  background: var(--navy);
  padding: 15px 22px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.hero-form-header-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--white);
}
.hero-form-badge {
  margin-left: auto;
  background: var(--orange-grad);
  color: var(--white);
  font-size: 11px;
  font-weight: 700;
  padding: 3px 11px;
  border-radius: 999px;
  font-family: var(--font-ja);
}

/* ============================================================
   Contact Form
   ============================================================ */
/* 高さ絶対値で指定（iframe切り替え時の目安: 580px） */
.hero-form-body {
  height: 580px;
  overflow: hidden;
  padding: 22px 22px 18px;
}
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.form-field {
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.form-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--navy-deep);
  display: flex;
  align-items: center;
  gap: 7px;
}
.form-required {
  font-size: 10px;
  font-weight: 700;
  background: var(--orange-grad);
  color: var(--white);
  padding: 2px 7px;
  border-radius: 3px;
  letter-spacing: 0.05em;
  font-family: var(--font-ja);
}
.form-optional {
  font-size: 10px;
  font-weight: 400;
  background: var(--bg-section);
  color: var(--text-light);
  padding: 2px 7px;
  border-radius: 3px;
  border: 1px solid var(--border);
  font-family: var(--font-ja);
}
.form-input {
  font-family: var(--font-ja);
  font-size: 14px;
  font-weight: 400;
  color: var(--text-dark);
  background: var(--off-white);
  border: 1.5px solid var(--border-mid);
  border-radius: var(--r-sm);
  padding: 9px 13px;
  width: 100%;
  transition:
    border-color 0.2s,
    box-shadow 0.2s,
    background 0.2s;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
}
.form-input::placeholder {
  color: var(--text-light);
}
.form-input:focus {
  border-color: var(--navy-light);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(22, 38, 130, 0.1);
}
.form-textarea {
  min-height: 72px;
  resize: none;
  line-height: 1.7;
}
.form-submit {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  width: 100%;
  background: var(--orange-grad);
  color: var(--white);
  font-family: var(--font-ja);
  font-size: 15px;
  font-weight: 700;
  border: none;
  border-radius: var(--r-md);
  padding: 14px;
  cursor: pointer;
  box-shadow: 0 5px 18px rgba(240, 76, 18, 0.35);
  transition:
    opacity 0.2s,
    transform 0.2s,
    box-shadow 0.2s;
  margin-top: 2px;
  position: relative;
  overflow: hidden;
}
.form-submit::after {
  content: "";
  position: absolute;
  top: 0;
  left: -80%;
  width: 60%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transform: skewX(-15deg);
  animation: shimmerSlide 3s ease-in-out infinite;
}
.form-submit:hover {
  opacity: 0.9;
  transform: translateY(-2px);
  box-shadow: 0 8px 26px rgba(240, 76, 18, 0.45);
}
.form-submit:disabled {
  cursor: default;
}
.form-submit:disabled::after {
  display: none;
}

.form-privacy {
  font-size: 11px;
  color: var(--text-light);
  font-weight: 400;
  text-align: center;
  line-height: 1.5;
}
.form-privacy a {
  color: var(--navy-light);
  text-decoration: underline;
}

/* ============================================================
   Pain
   ============================================================ */
.pain {
  background: var(--off-white);
  padding: 96px 0;
  position: relative;
}
.pain::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--border-mid) 30%,
    var(--border-mid) 70%,
    transparent
  );
}
.pain-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.pain-card {
  background: var(--white);
  border-radius: var(--r-lg);
  padding: 28px 26px;
  border: 1px solid var(--border);
  display: flex;
  gap: 18px;
  align-items: flex-start;
}
.pain-icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: var(--r-sm);
  background: var(--bg-section);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--navy-mid);
  font-size: 16px;
}
.pain-card-body h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--navy-deep);
  margin-bottom: 6px;
  line-height: 1.45;
}
.pain-card-body p {
  font-size: 15px;
  color: var(--text-mid);
  font-weight: 500;
  line-height: 1.8;
}

/* ============================================================
   Features
   ============================================================ */
.features {
  position: relative;
  background-image: url("./images/image_network.png");
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  padding: 100px 0;
}
.features-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(2, 4, 28, 0.77) 0%,
    rgba(2, 4, 28, 0.75) 60%,
    rgba(2, 4, 28, 0.82) 100%
  );
}
.features-content {
  position: relative;
  z-index: 2;
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.feature-card {
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.98);
  border-radius: var(--r-lg);
  padding: 32px 30px 30px;
  position: relative;
  overflow: hidden;
}
.feature-card.wide {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 44px;
  align-items: center;
}

/* 右上の薄い背景数字 */
.feature-num {
  font-size: 84px;
  font-weight: 800;
  color: rgba(2, 4, 28, 0.055);
  line-height: 1;
  position: absolute;
  top: 10px;
  right: 18px;
  letter-spacing: -0.04em;
  pointer-events: none;
}

/* tag + icon を一体化した横並びヘッダー */
.feature-header {
  display: flex;
  align-items: center;
  margin-bottom: 16px;
}
.feature-tag {
  display: inline-flex;
  align-items: center;
  gap: 0;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--white);
  background: var(--navy);
  border: none;
  border-radius: var(--r-sm);
  padding: 5px 14px 5px 0;
  overflow: visible;
}
.feature-tag i {
  width: 42px;
  height: 42px;
  background: var(--white);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--orange);
  flex-shrink: 0;
  margin: -8px 6px -8px -4px;
  box-shadow: 0 0 0 2px var(--navy);
}

.feature-card h3 {
  font-size: 20px;
  font-weight: 900;
  color: var(--navy-deep);
  margin-bottom: 14px;
  line-height: 1.5;
  letter-spacing: 0.01em;
}
.feature-card p {
  font-size: 15px;
  color: var(--text-mid);
  font-weight: 500;
  line-height: 1.8;
}

.feature-wide-right {
  background: var(--bg-section);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 32px 28px;
  text-align: left;
}
.feature-wide-right .label {
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-light);
  margin-bottom: 10px;
  font-family: var(--font-en);
  display: block;
}
.feature-wide-right strong {
  display: block;
  font-size: 18px;
  font-weight: 700;
  color: var(--navy-deep);
  line-height: 1.5;
  margin-bottom: 18px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-mid);
}
.feature-wide-right .list {
  list-style: none;
}
.feature-wide-right .list li {
  font-size: 14px;
  color: var(--text-mid);
  font-weight: 500;
  padding: 6px 0;
  display: flex;
  align-items: center;
  gap: 6px;
}
.feature-wide-right .list li:last-child {
  border-bottom: none;
}
.feature-wide-right .list li i {
  color: var(--orange);
  font-size: 9px;
  flex-shrink: 0;
}

/* ============================================================
   Model
   ============================================================ */
.model-section {
  background: var(--bg-section);
  padding: 96px 0;
  position: relative;
}
.model-section::before,
.model-section::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--border-mid) 30%,
    var(--border-mid) 70%,
    transparent
  );
}
.model-section::before {
  top: 0;
}
.model-section::after {
  bottom: 0;
}
.model-frame {
  max-width: 800px;
  margin: 0 auto;
  background: var(--navy-deep);
  border-radius: var(--r-xl);
  padding: 52px 48px;
  box-shadow: var(--sh-lg);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.model-frame::before {
  content: "";
  position: absolute;
  top: 0;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.1),
    transparent
  );
}
.model-frame img {
  max-width: 100%;
  margin: 0 auto;
  border-radius: var(--r-md);
}

/* ============================================================
   Trust
   ============================================================ */
.trust {
  background: var(--navy-deep);
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}
.trust::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(
    rgba(255, 255, 255, 0.04) 1px,
    transparent 1px
  );
  background-size: 28px 28px;
  pointer-events: none;
}
.trust-bg-text {
  position: absolute;
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 140px;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.025);
  white-space: nowrap;
  pointer-events: none;
  letter-spacing: -0.03em;
  user-select: none;
}
.trust .section-title {
  color: var(--white);
}
.trust .section-eyebrow {
  color: rgba(200, 220, 255, 0.9);
}
.trust .section-lead {
  color: rgba(255, 255, 255, 0.92);
}

.trust-numbers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  position: relative;
  z-index: 2;
}
.number-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--r-lg);
  text-align: center;
  padding: 52px 24px 44px;
  position: relative;
  overflow: hidden;
}
.number-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--orange-grad);
}
.number-card::after {
  content: "";
  position: absolute;
  top: -40px;
  left: 50%;
  transform: translateX(-50%);
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(240, 76, 18, 0.08) 0%,
    transparent 70%
  );
  pointer-events: none;
}
.number-card-icon {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: rgba(240, 76, 18, 0.1);
  border: 1px solid rgba(240, 76, 18, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  color: var(--orange-lt);
  font-size: 18px;
}
.number-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.88);
  letter-spacing: 0.04em;
  margin-bottom: 14px;
  font-weight: 400;
  font-family: var(--font-ja);
}
.number-value {
  font-size: 52px;
  font-weight: 700;
  background: linear-gradient(135deg, #ff7235, #f04c12);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
  line-height: 1;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}
.number-value small {
  font-size: 16px;
  font-weight: 400;
  font-family: var(--font-ja);
}
.number-unit-label {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.65);
  font-weight: 400;
  margin-top: 12px;
  font-family: var(--font-en);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ============================================================
   Guarantee
   ============================================================ */
.guarantee {
  position: relative;
  padding: 110px 0;
  text-align: center;
  overflow: hidden;
}
.guarantee::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("./images/image_bg.jpg");
  background-size: cover;
  background-position: center;
  z-index: 0;
}
.guarantee::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(255, 128, 64, 0.93) 0%,
    rgba(240, 76, 18, 0.93) 45%,
    rgba(196, 50, 0, 0.95) 100%
  );
  z-index: 1;
}
.guarantee-glow {
  position: absolute;
  top: -160px;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 700px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(255, 255, 255, 0.14) 0%,
    transparent 65%
  );
  pointer-events: none;
  z-index: 2;
  animation: floatY 6s ease-in-out infinite;
}
.guarantee-box {
  max-width: 700px;
  margin: 0 auto;
  background: rgba(0, 0, 0, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: var(--r-xl);
  padding: 64px 52px;
  position: relative;
  z-index: 3;
  backdrop-filter: blur(8px);
}
.guarantee-box.in {
  animation: scaleIn 0.7s cubic-bezier(0.175, 0.885, 0.32, 1.275) both;
}
.guarantee-icon {
  width: 70px;
  height: 70px;
  background: rgba(255, 255, 255, 0.15);
  border: 1.5px solid rgba(255, 255, 255, 0.35);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  color: var(--white);
  font-size: 26px;
  animation: pulseRing 2.8s ease-out infinite;
}
.guarantee h2 {
  font-size: 30px;
  font-weight: 900;
  color: var(--white);
  margin-bottom: 18px;
  line-height: 1.45;
  letter-spacing: 0.1em;
}
.guarantee-middle {
  display: block;
  color: rgba(255, 255, 255, 0.9);
  font-size: 22px;
  font-weight: 400;
  margin-top: 6px;
}

.guarantee-middle span {
  font-size: 26px;
  font-weight: 900;
}
.guarantee-bottom {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.88);
  font-weight: 400;
  line-height: 1.95;
  margin-top: 12px;
  margin-bottom: 36px;
}

.model-img-pc {
  display: block;
}
.model-img-sp {
  display: none;
}

/* ============================================================
   Footer
   ============================================================ */
footer {
  background: var(--navy-deep);
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  padding: 56px 0 36px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 32px;
  padding-bottom: 36px;
}
/* フッター：事務局情報 */
.footer-info {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.footer-office-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.04em;
  margin-bottom: 2px;
}
.footer-office-note {
  font-size: 11px;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.45);
  letter-spacing: 0.03em;
  margin-bottom: 10px;
}
.footer-office-address {
  font-size: 13px;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.65);
  letter-spacing: 0.04em;
}
.footer-office-tel {
  font-size: 22px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.04em;
  font-family: var(--font-en);
}
.footer-office-tel a {
  color: inherit;
  text-decoration: none;
}
.footer-office-hours {
  font-size: 12px;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 0.04em;
}

.footer-cta h4 {
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 14px;
  font-family: var(--font-en);
}
.footer-copy {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.45);
  letter-spacing: 0.1em;
  text-align: center;
}

/* ============================================================
   スマホ固定CTAボタン（SP only）
   ============================================================ */
.sp-fixed-cta {
  display: none;
}

/* ============================================================
   Responsive — 1100px
   ============================================================ */
@media (max-width: 1100px) {
  .container {
    padding: 0 28px;
  }
  .hero-inner {
    padding: 70px 28px;
    grid-template-columns: 1fr 360px;
    gap: 36px;
  }
  .site-header {
    padding: 0 28px;
  }
}

/* ============================================================
   Responsive — 900px (Tablet)
   ============================================================ */
@media (max-width: 900px) {
  .container {
    padding: 0 20px;
  }
  .hero {
    background-attachment: scroll;
  }
  .hero::before {
    display: none;
  }
  .hero-inner {
    grid-template-columns: 1fr;
    padding: 64px 20px 56px;
    gap: 40px;
  }
  .hero h1 {
    font-size: 34px;
  }
  .hero-form-panel {
    max-width: 560px;
    margin: 0 auto;
    width: 100%;
  }
  .features {
    background-attachment: scroll;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .feature-card.wide {
    grid-column: auto;
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .feature-num {
    font-size: 60px;
  }
  .pain-grid {
    grid-template-columns: 1fr;
  }
  .trust-numbers {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .guarantee-box {
    padding: 44px 28px;
  }
  .model-frame {
    padding: 36px 20px;
  }
  .footer-inner {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  .pain,
  .features,
  .model-section,
  .trust,
  .guarantee {
    padding: 72px 0;
  }
}

/* ============================================================
   Responsive — 768px (SP: ヘッダー透明固定 + 固定CTA)
   ============================================================ */
@media (max-width: 768px) {
  /* ---- 全体本文 14px ---- */
  body {
    font-size: 14px;
  }
  .num-accent {
    font-size: 32px;
  }

  /* ---- ヘッダー: 透明 + fixed ---- */
  .site-header {
    position: fixed;
    background: transparent;
    border-bottom: none;
    box-shadow: none;
    padding: 0 18px;
    height: 56px;
  }
  /* 社名: 白 + 黒テキストシャドウで両背景対応 */
  .nav-logo-en {
    font-size: 19px;
    color: var(--white);
    text-shadow:
      0 1px 4px rgba(0, 0, 0, 0.7),
      0 0 12px rgba(0, 0, 0, 0.4);
  }
  .nav-logo-ja {
    color: rgba(255, 255, 255, 0.75);
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.6);
  }
  /* ヘッダーのCTAは非表示（固定CTAに移行） */
  .header-cta {
    display: none;
  }

  /* ヒーローは固定ヘッダー分だけ上にパディングを追加 */
  .hero {
    padding-top: 0;
  }
  .hero-inner {
    padding-top: 80px;
  }

  /* ---- スマホ固定CTAボタン ---- */
  .sp-fixed-cta {
    display: block;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 400;
    padding: 12px 16px 16px;
    background: linear-gradient(
      to top,
      rgba(2, 4, 28, 0.95) 0%,
      rgba(2, 4, 28, 0.7) 100%
    );
    backdrop-filter: blur(6px);
    animation: spCtaIn 0.6s ease 1.5s both;
    /* フォームエリアスクロール時は非表示にするためJS制御も可 */
  }
  .sp-fixed-cta-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    background: var(--orange-grad);
    color: var(--white);
    font-family: var(--font-ja);
    font-size: 16px;
    font-weight: 700;
    text-decoration: none;
    padding: 16px;
    border-radius: var(--r-md);
    box-shadow: 0 4px 20px rgba(240, 76, 18, 0.45);
    position: relative;
    overflow: hidden;
  }
  .sp-fixed-cta-btn::after {
    content: "";
    position: absolute;
    top: 0;
    left: -80%;
    width: 60%;
    height: 100%;
    background: linear-gradient(
      90deg,
      transparent,
      rgba(255, 255, 255, 0.2),
      transparent
    );
    transform: skewX(-15deg);
    animation: shimmerSlide 3s ease-in-out infinite;
  }

  /* フッターに固定CTAの高さ分のパディング */
  footer {
    padding-bottom: 90px;
  }

  /* ---- セクション共通 ---- */
  .section-title {
    font-size: 22px;
  }
  .section-lead {
    font-size: 14px;
    margin-bottom: 32px;
  }
  .pain,
  .features,
  .model-section,
  .trust,
  .guarantee {
    padding: 60px 0;
  }
  .container {
    padding: 0 16px;
  }

  /* ---- ヒーロー ---- */
  .hero h1 {
    font-size: 26px;
  }
  .hero-desc {
    font-size: 14px;
  }
  .hero-guarantee {
    font-size: 13px;
  }
  .hero-badges {
    border-radius: var(--r-md);
  }
  .hero-badge-num {
    font-size: 22px;
  }
  .hero-badge-unit {
    font-size: 12px;
  }
  .hero-badge-label {
    font-size: 9px;
  }
  .hero-badge-item {
    padding: 14px 8px;
  }

  /* フォームパネル */
  .hero-form-panel {
    max-width: 100%;
    border-radius: var(--r-lg);
  }
  .hero-form-body {
    height: auto;
    overflow: visible;
    padding: 18px 16px 16px;
  }
  .form-textarea {
    min-height: 80px;
  }

  /* ---- Pain ---- */
  .pain-card {
    padding: 20px 18px;
    gap: 14px;
  }
  .pain-card-body h3 {
    font-size: 15px;
  }
  .pain-card-body p {
    font-size: 14px;
  }

  /* ---- Features ---- */
  .feature-card {
    padding: 24px 20px;
  }
  .feature-num {
    font-size: 52px;
  }
  .feature-card h3 {
    font-size: 17px;
  }
  .feature-card p {
    font-size: 14px;
  }
  .feature-wide-right {
    padding: 24px 16px;
  }
  .feature-wide-right strong {
    font-size: 16px;
  }
  .feature-wide-right .list li {
    font-size: 13px;
    padding: 4px 0;
  }

  /* ---- Trust ---- */
  .trust-numbers {
    gap: 10px;
  }
  .number-card {
    padding: 36px 16px 28px;
  }
  .number-value {
    font-size: 40px;
  }
  .number-label {
    font-size: 13px;
  }
  .trust-bg-text {
    font-size: 60px;
  }

  /* ---- Model ---- */
  .model-frame {
    padding: 28px 14px;
    border-radius: var(--r-lg);
  }

  /* ---- Guarantee ---- */
  .guarantee {
    padding: 64px 0;
  }
  .guarantee-box {
    padding: 36px 18px;
  }
  .guarantee h2 {
    font-size: 22px;
  }
  .guarantee-middle {
    font-size: 17px;
  }
  .guarantee-middle span {
    font-size: 19px;
  }
  .guarantee-bottom {
    font-size: 14px;
  }
  .btn-primary {
    font-size: 15px;
    padding: 15px 24px;
  }

  /* ---- Model 画像切り替え ---- */
  .model-img-pc {
    display: none;
  }
  .model-img-sp {
    display: block;
  }

  /* ---- Footer CTA 非表示 ---- */
  .footer-cta {
    display: none;
  }

  /* ---- Footer ---- */
  .footer-inner {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 24px;
  }
  .footer-logo-en {
    font-size: 18px;
  }
  .nav-logo-ja {
    display: none;
  }
  .footer-copy {
    font-size: 10px;
  }
}

/* ============================================================
   Responsive — 480px
   ============================================================ */
@media (max-width: 480px) {
  .hero h1 {
    font-size: 24px;
  }
  .hero-label {
    font-size: 10px;
  }
  .section-title {
    font-size: 20px;
  }
  .hero-badge-item {
    padding: 12px 6px;
  }
  .hero-badge-num {
    font-size: 18px;
  }
  .pain-grid {
    gap: 10px;
  }
  .pain-card {
    padding: 16px 14px;
    gap: 12px;
  }
  .pain-icon-wrap {
    width: 38px;
    height: 38px;
    font-size: 14px;
  }
  .feature-tag {
    font-size: 11px;
    padding: 6px 12px 6px 0;
  }
  .feature-num {
    font-size: 44px;
  }
  .number-value {
    font-size: 36px;
  }
  .trust-bg-text {
    font-size: 48px;
  }
  .guarantee-box {
    padding: 28px 14px;
  }
  .guarantee h2 {
    font-size: 20px;
  }
  .sp-fixed-cta-btn {
    font-size: 15px;
    padding: 14px;
  }
}