@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700;800&family=Noto+Sans+JP:wght@400;500;700;900&display=swap');

:root {
    --bg: #f6fbff;
    --bg-alt: #edf5ff;
    --line: rgba(31, 111, 212, 0.2);
    --text: #102134;
    --muted: #4f6780;
    --primary: #1f6fd4;
    --primary-dark: #1555a8;
    --accent: #0f3f7e;
    --accent-soft: rgba(31, 111, 212, 0.09);
    --card: rgba(255, 255, 255, 0.94);
    --radius: 16px;
    --shadow: 0 18px 40px rgba(15, 63, 126, 0.12);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: 'Inter', sans-serif;
    color: var(--text);
    line-height: 1.7;
    background:
        linear-gradient(180deg, rgba(246, 251, 255, 0.9), rgba(237, 245, 255, 0.92)),
        url('/assets/bg_jp.webp') no-repeat center center fixed;
    background-size: cover;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -1;
    background:
        radial-gradient(circle at top left, rgba(31, 111, 212, 0.14), transparent 36%),
        radial-gradient(circle at bottom right, rgba(14, 165, 233, 0.12), transparent 34%);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

.narrow {
    max-width: 860px;
}

.section {
    padding: 88px 0;
}

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

.hero {
    padding: 110px 0 88px;
}

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

.eyebrow {
    display: inline-flex;
    padding: 8px 14px;
    margin-bottom: 20px;
    border-radius: 999px;
    background: rgba(31, 111, 212, 0.12);
    color: var(--primary-dark);
    font-weight: 700;
    letter-spacing: 0.04em;
}

h1,
h2,
h3,
p,
ul {
    margin-top: 0;
}

h1 {
    font-size: clamp(2.2rem, 5vw, 4rem);
    line-height: 1.15;
    margin-bottom: 24px;
}

h2 {
    font-size: clamp(1.8rem, 3.8vw, 2.7rem);
    line-height: 1.2;
    margin-bottom: 18px;
}

h3 {
    font-size: 1.2rem;
    margin-bottom: 12px;
}

.highlight {
    color: var(--primary);
}

.sub,
.section-lead {
    font-size: 1.05rem;
    color: var(--muted);
}

.hero-points {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin: 32px 0 24px;
}

.hero-points span,
.case-badge {
    display: inline-flex;
    align-items: center;
    padding: 10px 14px;
    border-radius: 999px;
    background: #fff;
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    font-size: 0.95rem;
}

.hero-copy-block {
    display: inline-block;
    max-width: 760px;
    text-align: center;
    margin-bottom: 28px;
    padding: 18px 22px;
    border: 1px solid rgba(31, 111, 212, 0.28);
    border-radius: 14px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.97), rgba(239, 248, 255, 0.95));
    box-shadow:
        0 14px 34px rgba(15, 63, 126, 0.12),
        0 0 0 3px rgba(31, 111, 212, 0.08);
}

.hero-copy-block p {
    margin-bottom: 8px;
    font-size: 1.06rem;
}

.hero-copy-block p:last-child {
    margin-bottom: 0;
}

.hero-copy-block strong {
    display: inline-block;
    margin-top: 6px;
    padding: 9px 16px 9px 14px;
    border-radius: 10px;
    background: linear-gradient(90deg, rgba(31, 111, 212, 0.22), rgba(14, 165, 233, 0.08));
    color: var(--accent);
    border-left: 4px solid var(--primary-dark);
    letter-spacing: 0.02em;
    box-shadow: none;
}

.btn-primary,
.card-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 22px;
    border-radius: 999px;
    background: #38bdf8;
    color: #fff;
    text-decoration: none;
    font-weight: 700;
    transition: transform 0.2s ease, background 0.2s ease;
}

.card-link {
    padding: 0;
    background: transparent;
    color: var(--primary-dark);
}

.btn-primary:hover,
.card-link:hover {
    transform: translateY(-1px);
}

.cta-note {
    margin-top: 12px;
    color: var(--muted);
    font-size: 0.95rem;
}

.grid-3,
.flow-grid {
    display: grid;
    gap: 22px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card,
.flow-item,
.case-card,
.cta-panel,
.faq-item {
    padding: 28px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--card);
    box-shadow: var(--shadow);
}

.check-list {
    padding-left: 22px;
    color: var(--text);
}

.check-list li+li {
    margin-top: 12px;
}

.flow-step {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    margin-bottom: 14px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    font-weight: 700;
}

.carousel {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 16px;
    align-items: center;
}

.carousel-track-wrap {
    overflow: hidden;
}

.carousel-track {
    display: flex;
    transition: transform 0.3s ease;
}

.case-card {
    min-width: 100%;
}

.case-issue {
    font-weight: 700;
}

.carousel-btn {
    width: 48px;
    height: 48px;
    border: 0;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    cursor: pointer;
}

.carousel-btn:disabled {
    opacity: 0.4;
    cursor: default;
}

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 18px;
}

.carousel-dot {
    width: 10px;
    height: 10px;
    border: 0;
    border-radius: 50%;
    background: rgba(22, 35, 32, 0.2);
    cursor: pointer;
}

.carousel-dot.is-active {
    background: var(--primary);
}

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

.faq-item+.faq-item {
    margin-top: 18px;
}

@media (max-width: 900px) {

    .grid-3,
    .flow-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 680px) {
    .hero {
        padding-top: 88px;
    }

    .grid-3,
    .flow-grid,
    .carousel {
        grid-template-columns: 1fr;
    }

    .carousel {
        gap: 12px;
    }

    .carousel-btn {
        display: none;
    }

    .hero-points {
        flex-direction: column;
    }

    .section {
        padding: 68px 0;
    }
}

/* Design refresh layer: visual polish while preserving existing HTML structure */
:root {
    --bg: #f6fbff;
    --bg-alt: #edf5ff;
    --line: rgba(31, 111, 212, 0.2);
    --text: #102134;
    --muted: #4f6780;
    --primary: #1f6fd4;
    --primary-dark: #1555a8;
    --accent: #0f3f7e;
    --accent-soft: rgba(31, 111, 212, 0.09);
    --card: rgba(255, 255, 255, 0.9);
    --radius: 18px;
    --shadow: 0 20px 45px rgba(15, 63, 126, 0.14);
}

body {
    font-family: 'Noto Sans JP', 'Manrope', sans-serif;
    background:
        linear-gradient(165deg, rgba(246, 251, 255, 0.92), rgba(237, 245, 255, 0.88)),
        radial-gradient(circle at 8% 5%, rgba(31, 111, 212, 0.14), transparent 42%),
        radial-gradient(circle at 92% 12%, rgba(14, 165, 233, 0.12), transparent 38%),
        url('/assets/bg_jp.webp') no-repeat center center fixed;
    background-size: cover;
}

body::before {
    animation: ambientFloat 16s ease-in-out infinite alternate;
}

.hero {
    position: relative;
    padding: 132px 0 98px;
}

.hero::after {
    content: "";
    position: absolute;
    inset: auto 0 -1px 0;
    height: 120px;
    background: linear-gradient(to bottom, rgba(246, 251, 255, 0), rgba(246, 251, 255, 0.95));
    pointer-events: none;
}

.eyebrow {
    border: 1px solid rgba(31, 111, 212, 0.3);
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

h1,
h2,
h3 {
    font-family: 'Manrope', 'Noto Sans JP', sans-serif;
    letter-spacing: 0.01em;
}

h1 {
    font-weight: 800;
    text-wrap: balance;
}

h2 {
    font-weight: 800;
}

.sub,
.section-lead {
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.hero-points span,
.case-badge {
    border-color: rgba(31, 111, 212, 0.25);
    background: rgba(255, 255, 255, 0.84);
    backdrop-filter: blur(4px);
}

.hero-copy-block {
    border-radius: 16px;
    border: 1px solid rgba(31, 111, 212, 0.34);
    background: linear-gradient(160deg, rgba(255, 255, 255, 0.97), rgba(235, 247, 255, 0.94));
    box-shadow:
        0 18px 40px rgba(15, 63, 126, 0.14),
        0 0 0 1px rgba(255, 255, 255, 0.6) inset;
}

.hero-copy-block strong {
    background: linear-gradient(90deg, rgba(31, 111, 212, 0.24), rgba(14, 165, 233, 0.08));
    border-left-color: var(--primary);
}

.btn-primary,
.card-link {
    border: 1px solid transparent;
    transition: transform 0.22s ease, box-shadow 0.22s ease, background 0.22s ease, color 0.22s ease;
}

.btn-primary {
    padding: 15px 24px;
    background: linear-gradient(135deg, #38bdf8, #0ea5e9);
    box-shadow: 0 14px 26px rgba(14, 165, 233, 0.28);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 18px 30px rgba(14, 165, 233, 0.35);
}

.btn-primary:focus-visible {
    outline: 2px solid rgba(56, 189, 248, 0.55);
}

.carousel-btn:focus-visible,
.carousel-dot:focus-visible,
.card-link:focus-visible {
    outline: 2px solid rgba(31, 111, 212, 0.5);
    outline-offset: 3px;
}

.grid-3,
.flow-grid {
    gap: 24px;
}

.card,
.flow-item,
.case-card,
.cta-panel,
.faq-item {
    position: relative;
    overflow: hidden;
    border-color: rgba(31, 111, 212, 0.24);
    background:
        linear-gradient(160deg, rgba(255, 255, 255, 0.93), rgba(245, 250, 255, 0.88));
    box-shadow: var(--shadow);
    transition: transform 0.24s ease, box-shadow 0.24s ease, border-color 0.24s ease;
}

.card::before,
.flow-item::before,
.case-card::before,
.faq-item::before {
    content: "";
    position: absolute;
    inset: 0 auto auto 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, rgba(31, 111, 212, 0.86), rgba(14, 165, 233, 0.2));
}

.card:hover,
.flow-item:hover,
.case-card:hover,
.faq-item:hover {
    transform: translateY(-4px);
    border-color: rgba(31, 111, 212, 0.36);
    box-shadow: 0 24px 42px rgba(15, 63, 126, 0.18);
}

.flow-step {
    background: linear-gradient(135deg, #1f6fd4, #1555a8);
    box-shadow: 0 8px 18px rgba(21, 85, 168, 0.34);
}

.section-accent {
    background:
        linear-gradient(180deg, rgba(31, 111, 212, 0.08), rgba(14, 165, 233, 0.04));
}

.carousel-track {
    will-change: transform;
}

.carousel-btn {
    background: linear-gradient(135deg, #0f4d9e, #0b3b78);
    border: 1px solid rgba(255, 255, 255, 0.16);
    box-shadow: 0 10px 20px rgba(11, 59, 120, 0.34);
    transition: transform 0.22s ease, opacity 0.22s ease;
}

.carousel-btn:hover:not(:disabled) {
    transform: translateY(-2px) scale(1.03);
}

.carousel-dot {
    width: 11px;
    height: 11px;
    transition: transform 0.2s ease, background 0.2s ease;
}

.carousel-dot:hover {
    transform: scale(1.15);
}

.carousel-dot.is-active {
    transform: scale(1.24);
    background: linear-gradient(135deg, #1f6fd4, #0ea5e9);
}

.section,
.hero,
.card,
.flow-item,
.case-card,
.faq-item,
.cta-panel {
    animation: riseIn 0.7s ease both;
}

@keyframes riseIn {
    from {
        opacity: 0;
        transform: translateY(14px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes ambientFloat {
    from {
        transform: translate3d(0, 0, 0) scale(1);
    }

    to {
        transform: translate3d(0, -8px, 0) scale(1.02);
    }
}

@media (prefers-reduced-motion: reduce) {

    .section,
    .hero,
    .card,
    .flow-item,
    .case-card,
    .faq-item,
    .cta-panel,
    body::before {
        animation: none !important;
    }

    .btn-primary,
    .card,
    .flow-item,
    .case-card,
    .faq-item,
    .carousel-btn,
    .carousel-dot {
        transition: none !important;
    }
}

@media (max-width: 900px) {
    .hero {
        padding-top: 106px;
    }
}

@media (max-width: 680px) {
    .hero {
        padding-top: 88px;
        padding-bottom: 76px;
    }

    .hero::after {
        height: 72px;
    }

    .hero-copy-block {
        padding: 16px;
    }

    .card,
    .flow-item,
    .case-card,
    .cta-panel,
    .faq-item {
        padding: 22px;
    }
}

/* Keep specific sections at 4 cards per row on as many devices as practical */
.grid-4-wide {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

/* Make solution links in card grids unmistakably clickable */
.grid-4-wide .card .card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 14px;
    padding: 10px 16px;
    border-radius: 999px;
    background: linear-gradient(135deg, #1f6fd4, #0ea5e9);
    color: #ffffff;
    border: 1px solid rgba(14, 165, 233, 0.45);
    box-shadow: 0 8px 18px rgba(15, 63, 126, 0.22);
    font-weight: 700;
    text-decoration: none;
}

.grid-4-wide .card .card-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 22px rgba(15, 63, 126, 0.28);
    color: #ffffff;
    text-decoration: none;
}

.grid-4-wide .card .card-link:focus-visible {
    outline: 2px solid rgba(56, 189, 248, 0.6);
    outline-offset: 3px;
}

@media (max-width: 1024px) {
    .grid-4-wide {
        grid-template-columns: repeat(4, minmax(0, 1fr));
        gap: 18px;
    }

    .grid-4-wide .card,
    .grid-4-wide .flow-item {
        padding: 20px;
    }
}

@media (max-width: 860px) {
    .grid-4-wide {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 560px) {
    .grid-4-wide {
        grid-template-columns: 1fr;
    }
}