@charset "UTF-8";

/* ============================================
   Busma LP - CSS
   バスから、スマホから～ ～つながる Busma
   ============================================ */

/* --- Google Fonts --- */
/* Google Fonts loaded via <link> in HTML head for performance */

/* --- CSS Variables --- */
:root {
    --primary: #0052cc;
    --primary-dark: #003d99;
    --primary-light: #e8f0fe;
    --accent: #ff6b35;
    --accent-dark: #e55a2b;
    --text-dark: #1a1a2e;
    --text-body: #333344;
    --text-light: #5a5a7a;
    --text-white: #ffffff;
    --bg-white: #ffffff;
    --bg-light: #f5f7fb;
    --bg-dark: #0a1628;
    --border: #d0d7e3;
    --shadow-sm: 0 2px 8px rgba(0, 30, 80, 0.08);
    --shadow-md: 0 4px 20px rgba(0, 30, 80, 0.12);
    --shadow-lg: 0 8px 40px rgba(0, 30, 80, 0.16);
    --radius: 8px;
    --radius-lg: 16px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1080px;
}

/* --- Reset & Base --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
    font-weight: 400;
    line-height: 1.9;
    color: var(--text-body);
    background: var(--bg-white);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    vertical-align: middle;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--primary-dark);
}


/* --- Layout --- */
.container {
    width: 90%;
    max-width: var(--max-width);
    margin: 0 auto;
}

.section {
    padding: 48px 0;
}

.section--gray {
    background: var(--bg-light);
}

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

.section--primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--text-white);
}


/* ============================================
   HERO
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(160deg, #0a1628 0%, #0d2240 40%, #0052cc 100%);
    overflow: hidden;
    padding: 60px 0;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -30%;
    width: 80%;
    height: 200%;
    background: linear-gradient(45deg, transparent 40%, rgba(255, 107, 53, 0.08) 50%, transparent 60%);
    transform: rotate(-15deg);
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 120px;
    background: linear-gradient(to top, var(--bg-white), transparent);
    pointer-events: none;
}

.hero__inner {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--text-white);
}

.hero__catch {
    font-size: 1.1rem;
    font-weight: 400;
    letter-spacing: 0.15em;
    margin-bottom: 16px;
    opacity: 0.85;
}

.hero__logo-img {
    display: block;
    max-width: 480px;
    width: 80%;
    height: auto;
    margin: 0 auto 8px;
    /* filter: brightness(0) invert(1); */
}

.hero__logo-text {
    font-family: 'Montserrat', sans-serif;
    font-size: clamp(3rem, 10vw, 6rem);
    font-weight: 900;
    letter-spacing: 0.02em;
    line-height: 1.1;
    margin-bottom: 8px;
    background: linear-gradient(135deg, #ffffff 20%, #ffcc80 80%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__sub {
    font-size: clamp(0.9rem, 2.5vw, 1.2rem);
    font-weight: 400;
    letter-spacing: 0.08em;
    margin-bottom: 40px;
    opacity: 0.8;
}

.hero__tagline {
    display: inline-block;
    font-size: clamp(1rem, 3vw, 1.5rem);
    font-weight: 700;
    padding: 12px 36px;
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: 60px;
    background: rgba(255,255,255,0.06);
    backdrop-filter: blur(6px);
    margin-bottom: 48px;
    letter-spacing: 0.06em;
}

.hero__desc {
    font-size: 1rem;
    line-height: 2;
    max-width: 600px;
    margin: 0 auto 40px;
    opacity: 0.85;
}

.hero__cta {
    display: inline-block;
    padding: 18px 48px;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-white);
    background: var(--accent);
    border-radius: 60px;
    box-shadow: 0 4px 20px rgba(255, 107, 53, 0.4);
    transition: var(--transition);
    letter-spacing: 0.04em;
}

.hero__cta:hover {
    background: var(--accent-dark);
    color: var(--text-white);
    transform: translateY(-2px);
    box-shadow: 0 6px 28px rgba(255, 107, 53, 0.5);
}

/* floating particles */
.hero__particles {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 3;
}

.hero__particle {
    position: absolute;
    bottom: -10px;
    width: 8px;
    height: 8px;
    background: rgba(255,255,255,0.25);
    border-radius: 50%;
    opacity: 0;
    will-change: transform, opacity;
    animation: float-up 8s linear infinite;
}

@keyframes float-up {
    0% { transform: translateY(0) scale(0.5); opacity: 0; }
    5% { opacity: 1; transform: translateY(0) scale(1); }
    95% { opacity: 0.8; }
    100% { transform: translateY(calc(-100vh - 20px)) scale(1); opacity: 0; }
}


/* ============================================
   SECTION TITLES
   ============================================ */
.section-title {
    text-align: center;
    margin-bottom: 32px;
}

.section-title__en {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--primary);
    display: block;
    margin-bottom: 8px;
}

.section--dark .section-title__en,
.section--primary .section-title__en {
    color: var(--accent);
}

.section-title__ja {
  display: inline-flex;
  align-items: center;
  line-height: 1.3;
  justify-content: center;
  gap: 6px;
}

.section-title__ja .concept__logo {
  display: inline-block;
  width: 120px;
  height: auto;
  vertical-align: baseline;
  position: relative;
  top: -6px; /* 微調整。-1px〜-4pxで好み */
  margin: 0 6px;
}

.section--dark .section-title__ja,
.section--primary .section-title__ja {
    color: var(--text-white);
}

.section-title__line {
    display: block;
    width: 48px;
    height: 3px;
    background: var(--primary);
    margin: 16px auto 0;
    border-radius: 2px;
}

.section--dark .section-title__line {
    background: var(--accent);
}

@media (max-width: 768px) {
  .section-title__ja .concept__logo {
    width: 92px;
    top: -4px;
    margin: 0 4px;
  }
}


/* ============================================
   PROBLEM SECTION
   ============================================ */
.problem__text {
    max-width: 760px;
    margin: 0 auto;
    font-size: 1.05rem;
    line-height: 2.1;
    text-align: left;
}

.problem__text p + p {
    margin-top: 1.6em;
}

.problem__highlight {
    display: block;
    text-align: center;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary);
    margin-top: 2em;
    padding: 24px;
    background: var(--primary-light);
    border-radius: var(--radius);
    border-left: 4px solid var(--primary);
}


/* ============================================
   CONCEPT SECTION
   ============================================ */
.concept__formula {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 48px;
}

.concept__box {
    text-align: center;
    padding: 28px 32px;
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    min-width: 200px;
}

.concept__box-icon {
    font-size: 2.5rem;
    margin-bottom: 8px;
}

.concept__box-label {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 4px;
}

.concept__box-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-dark);
    min-height: 56px;
    line-height: 1.4;
    display: flex;
    align-items: center;
    justify-content: center;
}

.concept__operator {
    font-family: 'Montserrat', sans-serif;
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
}

.concept__box--result {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--text-white);
}

.concept__box--result .concept__box-label {
    color: rgba(255,255,255,0.7);
}

.concept__box--result .concept__box-title {
    color: var(--text-white);
    font-family: 'Montserrat', sans-serif;
    font-size: 1.8rem;
    font-weight: 900;
    line-height: 1.2;
}

.concept__desc {
    max-width: 100%;
    margin: 0 auto;
    text-align: center;
    font-size: 1.05rem;
    line-height: 2;
}

.concept__logo {
  display: block;
  max-height: 44px;
  width: auto;
  height: auto;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .concept__formula {
    flex-direction: column;
    gap: 6px;
    margin-bottom: 20px;
  }

  .concept__box {
    width: 100%;
    min-width: 0;
    padding: 12px 14px;
  }

  .concept__box-icon {
    font-size: 1.6rem;
    margin-bottom: 2px;
  }

  .concept__box-label {
    margin-bottom: 2px;
    font-size: 0.8rem;
  }

  .concept__box-title {
    min-height: 0;
    font-size: 1rem;
  }

  .concept__operator {
    font-size: 1.2rem;
    line-height: 1;
    margin: -4px 0;
  }

  .concept__box--result .concept__box-title {
    font-size: 1.3rem;
  }

  .concept__logo {
    max-height: 32px;
  }

  .concept__desc {
    font-size: 0.9rem;
    line-height: 1.8;
  }
}


/* ============================================
   MERIT SECTION (2 columns)
   ============================================ */
.merit__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 36px;
}

.merit__card {
    padding: 24px 20px;
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border-top: 4px solid var(--primary);
    transition: var(--transition);
}

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

.merit__card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.merit__card-icon {
    font-size: 1.4rem;
    line-height: 1;
    flex-shrink: 0;
}

.merit__card-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--primary);
    background: var(--primary-light);
    padding: 3px 10px;
    border-radius: 4px;
    letter-spacing: 0.05em;
    flex-shrink: 0;
}

.merit__card-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.5;
}

.merit__card-text {
    font-size: 0.9rem;
    line-height: 1.8;
    color: var(--text-body);
}

.merit__note {
    text-align: center;
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary);
}


/* ============================================
   PLAN SECTION
   ============================================ */
.plan__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

.plan__grid--4col {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}

.plan__card {
    position: relative;
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

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

.plan__card-header {
    padding: 28px 32px 20px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--text-white);
    text-align: center;
}

.plan__grid--4col .plan__card-header {
    padding: 14px 14px 10px;
}

.plan__card-number {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    opacity: 0.7;
    margin-bottom: 2px;
}

.plan__card-name {
    font-size: 1.3rem;
    font-weight: 700;
}

.plan__grid--4col .plan__card-name {
    font-size: 1.05rem;
}

.plan__card-body {
    padding: 32px;
}

.plan__grid--4col .plan__card-body {
    padding: 14px 14px 18px;
}

.plan__card-desc {
    font-size: 0.85rem;
    line-height: 1.7;
    color: var(--text-body);
    margin-bottom: 12px;
    text-align: center;
}

.plan__item {
    margin-bottom: 20px;
}

.plan__item-label {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 4px;
    letter-spacing: 0.05em;
}

.plan__item-value {
    font-size: 0.95rem;
    line-height: 1.7;
}

.plan__price {
    text-align: center;
    padding: 24px 0;
    border-top: 1px solid var(--border);
    margin-top: 20px;
}

.plan__grid--4col .plan__price {
    padding: 10px 0 0;
    margin-top: 0;
    border-top: none;
}

.plan__price-label {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 4px;
}

.plan__price-amount {
    font-family: 'Montserrat', sans-serif;
    font-size: 2.8rem;
    font-weight: 900;
    color: var(--primary);
    line-height: 1.1;
}

.plan__grid--4col .plan__price-amount {
    font-size: clamp(1.5rem, 3.5vw, 2rem);
}

.plan__price-unit {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-body);
}

.plan__grid--4col .plan__price-unit {
    font-size: 0.8rem;
}

.plan__price-annual {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-top: 4px;
}

.plan__price-note {
    font-size: 0.75rem;
    color: var(--text-light);
    margin-top: 2px;
}

.plan__note {
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-light);
    margin-top: 24px;
}


/* ============================================
   FLOW SECTION
   ============================================ */
.flow__steps {
    max-width: 760px;
    margin: 0 auto;
    position: relative;
}

.flow__steps::before {
    content: '';
    position: absolute;
    left: 28px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: rgba(255,255,255,0.15);
}

.section--primary .flow__steps::before {
    background: rgba(255,255,255,0.15);
}

.flow__step {
    display: flex;
    align-items: flex-start;
    gap: 24px;
    margin-bottom: 40px;
    position: relative;
}

.flow__step:last-child {
    margin-bottom: 0;
}

.flow__step-num {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.12);
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    font-family: 'Montserrat', sans-serif;
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--text-white);
    position: relative;
    z-index: 2;
}

.flow__step-content {
    padding-top: 12px;
}

.flow__step-title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.flow__step-text {
    font-size: 0.95rem;
    opacity: 0.85;
    line-height: 1.8;
}


/* ============================================
   TARGET SECTION
   ============================================ */
.section-title__ja--with-logo {
  display: block;
  line-height: 1.3;
  text-align: center;
}

.section-title__ja--with-logo .concept__logo {
  display: inline-block;
  width: 120px;
  height: auto;
  vertical-align: baseline;
  position: relative;
  top: 0px;
  margin: 0 6px 0 0;
}

@media (max-width: 768px) {
  .section-title__ja--with-logo .concept__logo {
    width: 92px;
    top: 0px;
  }
}

.target__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
}

.target__card {
    text-align: center;
    padding: 36px 24px;
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.target__card-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
}

.target__card-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.target__card-text {
    font-size: 0.85rem;
    color: var(--text-light);
    line-height: 1.7;
}


/* ============================================
   MANGA SLIDER
   ============================================ */
.manga-slider {
    max-width: 760px;
    margin: 0 auto;
}

.manga-slider__viewport {
    overflow: hidden;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    background: var(--bg-white);
}

.manga-slider__track {
    display: flex;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.manga-slide {
    flex: 0 0 100%;
    min-width: 0;
}

.manga-slide__img-wrap {
    width: 100%;
    overflow: hidden;
    background: #f0f2f5;
}

.manga-slide__img {
    display: block;
    width: 100%;
    height: auto;
    object-fit: cover;
}

.manga-slide__body {
    padding: 20px 22px 24px;
}

.manga-slide__num {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    color: var(--primary);
    margin-bottom: 8px;
}

.manga-slide__title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.6;
    margin-bottom: 12px;
}

.manga-slide__text {
    font-size: 0.95rem;
    line-height: 2;
    color: var(--text-body);
}

/* Nav */
.manga-slider__nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-top: 24px;
}

.manga-slider__btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-white);
    border: 2px solid var(--border);
    border-radius: 50%;
    font-size: 1.2rem;
    color: var(--text-dark);
    cursor: pointer;
    transition: var(--transition);
    line-height: 1;
}

.manga-slider__btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}

.manga-slider__dots {
    display: flex;
    gap: 10px;
}

.manga-slider__dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: none;
    background: var(--border);
    cursor: pointer;
    transition: var(--transition);
    padding: 0;
}

.manga-slider__dot.is-active {
    background: var(--primary);
    transform: scale(1.3);
}

/* Responsive */
@media (max-width: 768px) {
    .manga-slide__body {
        padding: 16px 16px 18px;
    }

    .manga-slide__title {
        font-size: 1.05rem;
    }

    .manga-slide__text {
        font-size: 0.9rem;
    }
}


/* ============================================
   DIAGNOSTIC (1バイト診断)
   ============================================ */
.diagnostic {
    padding: 80px 0;
    background: var(--bg-light);
}

.diagnostic__intro {
    max-width: 700px;
    margin: 0 auto 48px;
    text-align: center;
    font-size: 1rem;
    line-height: 2;
    color: var(--text-body);
}

.diagnostic__note {
    font-size: 0.85rem;
    color: var(--text-light);
    text-align: center;
    margin-bottom: 32px;
}

.diagnostic__cards {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    margin: 0 auto 40px;
}

.diag-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 20px 16px;
    background: var(--bg-white);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    user-select: none;
    transition: var(--transition);
    text-align: center;
}

.diag-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.diag-card.is-on {
    border-color: var(--primary);
    background: var(--primary-light);
}

.diag-card__toggle {
    flex-shrink: 0;
    width: 52px;
    height: 28px;
    border-radius: 14px;
    background: #ccd4de;
    position: relative;
    transition: var(--transition);
}

.diag-card__toggle::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--bg-white);
    box-shadow: 0 1px 3px rgba(0,0,0,0.15);
    transition: var(--transition);
}

.diag-card.is-on .diag-card__toggle {
    background: var(--primary);
}

.diag-card.is-on .diag-card__toggle::after {
    left: 27px;
}

.diag-card__label {
    font-size: 0.85rem;
    font-weight: 500;
    line-height: 1.5;
    color: var(--text-dark);
    overflow-wrap: break-word;
    word-break: break-all;
}

.diag-card__status {
    flex-shrink: 0;
    font-family: 'Montserrat', sans-serif;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--text-light);
}

.diag-card.is-on .diag-card__status {
    color: var(--primary);
}

.diagnostic__btn-wrap {
    text-align: center;
    margin-bottom: 48px;
}

.btn-diagnose {
    display: inline-block;
    padding: 18px 56px;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-white);
    background: var(--primary);
    border: none;
    border-radius: 60px;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(0, 82, 204, 0.3);
    transition: var(--transition);
    letter-spacing: 0.04em;
}

.btn-diagnose:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(0, 82, 204, 0.4);
}

/* Diagnostic Result */
.diagnostic__result {
    display: none;
    max-width: 760px;
    margin: 0 auto;
    padding: 40px;
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.diagnostic__result.is-visible {
    display: block;
    animation: fadeInUp 0.5s ease;
}

.diagnostic__result-code {
    text-align: center;
    font-family: 'Montserrat', sans-serif;
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 24px;
}

.diagnostic__result-text {
    font-size: 1rem;
    line-height: 2.1;
    white-space: pre-wrap;
    color: var(--text-body);
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* diagnostic contact form */
.diagnostic__contact {
    margin-top: 40px;
    padding-top: 32px;
    border-top: 1px solid var(--border);
}

.diagnostic__contact h3 {
    text-align: center;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-dark);
    margin-bottom: 4px;
}

.form-group .required-mark {
    color: var(--accent);
    font-size: 0.8rem;
    margin-left: 4px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    font-size: 1rem;
    font-family: inherit;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-white);
    transition: var(--transition);
    line-height: 1.6;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 82, 204, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.btn-submit {
    display: block;
    width: 100%;
    max-width: 400px;
    margin: 24px auto 0;
    padding: 16px;
    font-size: 1rem;
    font-weight: 700;
    font-family: inherit;
    color: var(--text-white);
    background: var(--accent);
    border: none;
    border-radius: 60px;
    cursor: pointer;
    transition: var(--transition);
}

.btn-submit:hover {
    background: var(--accent-dark);
}

.thanks-message {
    display: none;
    text-align: center;
    padding: 32px;
    font-size: 1.05rem;
    color: var(--primary);
    font-weight: 500;
}


/* ============================================
   CTA SECTION
   ============================================ */
.cta {
    padding: 80px 0;
    text-align: center;
    background: linear-gradient(135deg, var(--bg-dark) 0%, #0d2240 100%);
    color: var(--text-white);
}

.cta__title {
    font-size: clamp(1.4rem, 4vw, 2rem);
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.6;
}

.cta__text {
    font-size: 1rem;
    line-height: 2;
    opacity: 0.85;
    max-width: 600px;
    margin: 0 auto 36px;
}

.cta__btn {
    display: inline-block;
    padding: 18px 56px;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-white);
    background: var(--accent);
    border-radius: 60px;
    box-shadow: 0 4px 20px rgba(255, 107, 53, 0.4);
    transition: var(--transition);
}

.cta__btn:hover {
    background: var(--accent-dark);
    color: var(--text-white);
    transform: translateY(-2px);
    box-shadow: 0 6px 28px rgba(255, 107, 53, 0.5);
}

.cta__tel {
    margin-top: 24px;
    font-size: 0.95rem;
    opacity: 0.7;
}

.cta__tel-block {
    margin-top: 36px;
}

.cta__tel-link {
    display: inline-block;
    font-family: 'Montserrat', sans-serif;
    font-size: clamp(2rem, 6vw, 3rem);
    font-weight: 900;
    color: var(--text-white);
    letter-spacing: 0.04em;
    transition: var(--transition);
}

.cta__tel-link:hover {
    color: var(--accent);
}

.cta__tel-note {
    margin-top: 8px;
    font-size: 0.9rem;
    opacity: 0.7;
}


/* ============================================
   FOOTER
   ============================================ */
.footer {
    padding: 32px 0;
    text-align: center;
    background: #060e1a;
    color: rgba(255,255,255,0.5);
    font-size: 0.8rem;
}

.footer__company {
    margin-bottom: 8px;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.7);
}


/* ============================================
   FLOATING BANNER
   ============================================ */
.floating-banner {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 1000;
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.floating-banner.is-visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.floating-banner__link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 24px;
    background: var(--accent);
    color: var(--text-white);
    border-radius: 60px;
    box-shadow: 0 4px 24px rgba(255, 107, 53, 0.45);
    font-weight: 700;
    font-size: 0.9rem;
    transition: var(--transition);
    text-decoration: none;
}

.floating-banner__link:hover {
    background: var(--accent-dark);
    color: var(--text-white);
    transform: translateY(-2px);
    box-shadow: 0 6px 28px rgba(255, 107, 53, 0.55);
}

.floating-banner__icon {
    font-size: 1.3rem;
    animation: pulse-icon 2s ease-in-out infinite;
}

@keyframes pulse-icon {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.15); }
}

.floating-banner__close {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 24px;
    height: 24px;
    background: var(--text-dark);
    color: var(--text-white);
    border: none;
    border-radius: 50%;
    font-size: 0.7rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    transition: var(--transition);
}

.floating-banner__close:hover {
    background: #333;
}


/* ============================================
   SCROLL ANIMATIONS
   ============================================ */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.is-visible {
    opacity: 1;
    transform: translateY(0);
}


/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .section {
        padding: 36px 0;
    }

    .hero {
        min-height: auto;
        padding: 100px 0 80px;
    }

    .concept__formula {
        flex-direction: column;
    }

    .concept__box {
        min-width: auto;
        width: 100%;
    }

    .concept__operator {
        transform: rotate(90deg);
    }

    .merit__grid {
        grid-template-columns: 1fr;
    }

    .plan__grid {
        grid-template-columns: 1fr;
    }

    .plan__grid--4col {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 14px;
    }

    .plan__grid--4col .plan__card-header {
        padding: 12px 10px 8px;
    }

    .plan__grid--4col .plan__card-body {
        padding: 12px 10px 16px;
    }

    .plan__grid--4col .plan__card-name {
        font-size: 0.9rem;
    }

    .plan__card-desc {
        font-size: 0.8rem;
    }

    .merit__card-title {
        width: 100%;
    }

    .target__grid {
        grid-template-columns: 1fr 1fr;
    }

    .diagnostic__cards {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .floating-banner {
        bottom: 16px;
        right: 16px;
        left: 16px;
    }

    .floating-banner__link {
        justify-content: center;
    }

    .flow__steps::before {
        left: 24px;
    }

    .flow__step-num {
        width: 48px;
        height: 48px;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .target__grid {
        grid-template-columns: 1fr;
    }

    .plan__grid--4col {
        grid-template-columns: 1fr;
    }

    .hero__tagline {
        font-size: 0.9rem;
        padding: 10px 24px;
    }
}


/* ============================================
   PROBLEM CARDS
   ============================================ */

.problem-cards {
  width: 100%;
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;

  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  justify-items: stretch;
}

.problem-card {
  text-align: center;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 0;
  overflow: hidden;
}

.problem-card__title {
  display: block;
  width: 100%;
  box-sizing: border-box;

  background: var(--primary);
  color: #fff;

  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.6;

  padding: 10px 12px;
  margin: 0;
}

.problem-card__text {
  padding: 14px 14px 12px;
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--text-body);
}

@media (max-width: 768px) {
  .problem-cards {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .problem-card__text {
    padding: 16px 16px 14px;
  }
}

.sp-only {
  display: none;
}

@media (max-width: 768px) {
  .sp-only {
    display: inline;
  }
}