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

:root {
    --navy:     #0d1b3e;
    --navy-mid: #162447;
    --cyan:     #00c4e8;
    --cyan-dark:#0099b8;
    --white:    #ffffff;
    --gray-bg:  #f4f6f9;
    --gray:     #666677;
    --text:     #1a1a2e;
    --border:   #e2e8f0;
}

html { scroll-behavior: smooth; }

body {
    font-family: 'Noto Sans JP', "Hiragino Kaku Gothic ProN", "游ゴシック", sans-serif;
    color: var(--text);
    line-height: 1.7;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }

.container {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Header ===== */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    background: rgba(13, 27, 62, 0.97);
    backdrop-filter: blur(6px);
    transition: box-shadow 0.3s;
}

.header-inner {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo a {
    color: var(--white);
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: 0.05em;
}

.logo span {
    font-size: 0.75rem;
    font-weight: 400;
    margin-left: 4px;
    opacity: 0.7;
}

.global-nav ul {
    display: flex;
    gap: 32px;
    list-style: none;
}

.global-nav a {
    color: rgba(255,255,255,0.8);
    font-size: 0.875rem;
    letter-spacing: 0.04em;
    transition: color 0.2s;
}

.global-nav a:hover { color: var(--cyan); }

.nav-contact {
    background: var(--cyan);
    color: var(--navy) !important;
    padding: 7px 16px;
    border-radius: 4px;
    font-weight: 700;
    transition: background 0.2s !important;
}

.nav-contact:hover {
    background: var(--cyan-dark) !important;
    color: var(--white) !important;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--white);
    transition: transform 0.3s;
}

/* ===== Utilities ===== */
.text-accent {
    color: var(--cyan);
    font-size: 1.15em;
}

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--navy) 0%, #1a3a6e 100%);
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 55%;
    height: 130%;
    background: linear-gradient(135deg, rgba(0,196,232,0.07) 0%, rgba(0,196,232,0.02) 100%);
    transform: skewX(-12deg);
    border-left: 1px solid rgba(0,196,232,0.12);
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0,196,232,0.4), transparent);
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 60px;
    padding-top: 80px;
    min-height: 100vh;
}

.hero-content { color: var(--white); }

.hero-tag {
    display: inline-block;
    font-size: 0.78rem;
    letter-spacing: 0.12em;
    color: var(--cyan);
    border: 1px solid rgba(0,196,232,0.4);
    padding: 5px 16px;
    border-radius: 20px;
    margin-bottom: 28px;
}

.hero-content h1 {
    font-size: clamp(1.9rem, 3.5vw, 2.8rem);
    font-weight: 700;
    line-height: 1.55;
    letter-spacing: 0.02em;
    margin-bottom: 20px;
    border-left: 4px solid var(--cyan);
    padding-left: 20px;
}

.hero-desc {
    font-size: 0.95rem;
    color: rgba(255,255,255,0.72);
    line-height: 1.85;
    margin-bottom: 36px;
    max-width: 420px;
}

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.btn-primary {
    display: inline-block;
    background: var(--cyan);
    color: var(--navy);
    padding: 14px 36px;
    border-radius: 4px;
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    transition: background 0.2s, transform 0.2s;
}

.btn-primary:hover {
    background: var(--cyan-dark);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-outline {
    display: inline-block;
    border: 1px solid rgba(255,255,255,0.35);
    color: rgba(255,255,255,0.85);
    padding: 14px 36px;
    border-radius: 4px;
    font-size: 0.95rem;
    letter-spacing: 0.05em;
    transition: border-color 0.2s, color 0.2s;
}

.btn-outline:hover {
    border-color: var(--cyan);
    color: var(--cyan);
}

/* Hero floating cards */
.hero-visual {
    position: relative;
    height: 380px;
}

.hero-card {
    position: absolute;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(0,196,232,0.22);
    backdrop-filter: blur(8px);
    border-radius: 12px;
    padding: 20px 24px;
    color: var(--white);
    font-size: 0.85rem;
    min-width: 175px;
}

.hero-card strong { color: var(--cyan); font-size: 1.15em; }

.hero-card-icon {
    width: 36px;
    height: 36px;
    margin-bottom: 12px;
    color: var(--cyan);
}

.hero-card-icon svg {
    width: 100%;
    height: 100%;
}

.hero-card:nth-child(1) {
    top: 8%;
    left: 4%;
    animation: floatA 4s ease-in-out infinite;
}

.hero-card:nth-child(2) {
    top: 38%;
    right: 2%;
    animation: floatA 4s ease-in-out infinite;
    animation-delay: 1.4s;
}

.hero-card:nth-child(3) {
    bottom: 8%;
    left: 18%;
    animation: floatA 4s ease-in-out infinite;
    animation-delay: 2.8s;
}

@keyframes floatA {
    0%, 100% { transform: translateY(0); }
    50%       { transform: translateY(-10px); }
}

/* ===== Section Common ===== */
.section { padding: 96px 0; }

.section-title {
    text-align: center;
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    margin-bottom: 12px;
    position: relative;
    padding-bottom: 20px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 3px;
    background: var(--cyan);
    border-radius: 2px;
}

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

.section-title::before {
    content: attr(data-en);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -52%);
    font-size: 3.8rem;
    font-weight: 900;
    color: rgba(13, 27, 62, 0.055);
    letter-spacing: 0.18em;
    white-space: nowrap;
    pointer-events: none;
    user-select: none;
    line-height: 1;
}

.section-title.white::before { color: rgba(255, 255, 255, 0.07); }

.section-lead {
    text-align: center;
    color: var(--gray);
    margin-bottom: 56px;
    font-size: 0.95rem;
}

.section-lead.white { color: rgba(255,255,255,0.75); }

/* ===== Service ===== */
.service { background: var(--gray-bg); }

.service-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-item {
    padding: 44px 36px;
    background: var(--white);
    border-top: 3px solid var(--cyan);
    border-radius: 0 0 8px 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    transition: transform 0.25s, box-shadow 0.25s;
}

.service-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 36px rgba(0,0,0,0.1);
}

.service-num {
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--cyan);
    letter-spacing: 0.12em;
    margin-bottom: 16px;
}

.service-icon-wrap {
    width: 52px;
    height: 52px;
    background: var(--navy);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: var(--cyan);
}

.service-icon-wrap svg { width: 24px; height: 24px; }

.service-item h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.service-item p { font-size: 0.875rem; color: var(--gray); line-height: 1.85; }

/* ===== Results ===== */
.results {
    background: var(--navy);
    position: relative;
    overflow: hidden;
}

.results::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0,196,232,0.06) 0%, transparent 55%);
}

.results .container { position: relative; }

.results-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
}

.result-item {
    text-align: center;
    padding: 52px 24px;
    border-right: 1px solid rgba(255,255,255,0.07);
    border-top: 3px solid rgba(0, 196, 232, 0.5);
}

.result-item:last-child { border-right: none; }

.result-num {
    font-size: 3.5rem;
    font-weight: 700;
    background: linear-gradient(160deg, #ffffff 0%, #00c4e8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.result-unit { font-size: 1.8rem; vertical-align: baseline; }

.result-label {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.6);
    letter-spacing: 0.05em;
}

/* ===== Flow ===== */
.flow { background: var(--gray-bg); }

.flow-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
}

.flow-step {
    text-align: center;
    padding: 0 20px;
    position: relative;
}

.flow-circle {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--navy);
    color: var(--cyan);
    font-size: 0.95rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    position: relative;
    z-index: 1;
    border: 2px solid var(--cyan);
    letter-spacing: 0.05em;
}

.flow-line {
    position: absolute;
    top: 27px;
    left: calc(50% + 28px);
    right: calc(-50% + 28px);
    height: 2px;
    background: linear-gradient(90deg, var(--cyan), rgba(0,196,232,0.25));
}

.flow-line.last { display: none; }

.flow-step:nth-child(1) { transition-delay: 0s; }
.flow-step:nth-child(2) { transition-delay: 0.18s; }
.flow-step:nth-child(3) { transition-delay: 0.36s; }
.flow-step:nth-child(4) { transition-delay: 0.54s; }

.flow-step h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 10px;
}

.flow-step p { font-size: 0.825rem; color: var(--gray); line-height: 1.8; }

/* ===== Company ===== */
.company { background: var(--white); }

.company-table {
    width: 100%;
    max-width: 760px;
    margin: 0 auto;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.company-table th,
.company-table td {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    text-align: left;
    vertical-align: top;
}

.company-table th {
    width: 160px;
    color: var(--navy);
    font-weight: 700;
    background: var(--gray-bg);
    white-space: nowrap;
}

/* ===== Contact ===== */
.contact { background: var(--navy); }

.contact-form {
    max-width: 720px;
    margin: 0 auto;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group { margin-bottom: 20px; }

.form-group label {
    display: block;
    color: rgba(255,255,255,0.88);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.required {
    background: #e74c3c;
    color: var(--white);
    font-size: 0.65rem;
    padding: 2px 6px;
    border-radius: 3px;
    margin-left: 6px;
    vertical-align: middle;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid rgba(255,255,255,0.14);
    border-radius: 4px;
    background: rgba(255,255,255,0.07);
    color: var(--white);
    font-size: 0.95rem;
    font-family: inherit;
    transition: border-color 0.2s, background 0.2s;
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(255,255,255,0.32); }

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--cyan);
    background: rgba(255,255,255,0.1);
}

.form-group select option { background: var(--navy); color: var(--white); }

.btn-submit {
    display: block;
    width: 100%;
    padding: 16px;
    background: var(--cyan);
    color: var(--navy);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.2s, transform 0.2s;
}

.btn-submit:hover {
    background: var(--cyan-dark);
    color: var(--white);
    transform: translateY(-2px);
}

/* ===== Footer ===== */
.site-footer {
    background: #060f20;
    padding: 36px 24px;
    text-align: center;
}

.footer-logo {
    color: var(--white);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.footer-logo span {
    font-size: 0.75rem;
    font-weight: 400;
    margin-left: 4px;
    opacity: 0.6;
}

.footer-copy { color: rgba(255,255,255,0.3); font-size: 0.75rem; }

/* ===== Fade-in ===== */
.fade-target {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.55s ease, transform 0.55s ease;
}

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

/* ===== Responsive ===== */
@media (max-width: 900px) {
    .hero-container { grid-template-columns: 1fr; }
    .hero-visual { display: none; }
    .results-grid { grid-template-columns: repeat(2, 1fr); }
    .flow-steps { grid-template-columns: repeat(2, 1fr); gap: 48px 0; }
    .flow-line { display: none; }
}

@media (max-width: 768px) {
    .nav-toggle { display: flex; }

    .global-nav {
        display: none;
        position: absolute;
        top: 64px; left: 0; right: 0;
        background: var(--navy);
        padding: 16px 0;
    }

    .global-nav.open { display: block; }

    .global-nav ul { flex-direction: column; gap: 0; }

    .global-nav a {
        display: block;
        padding: 14px 24px;
        border-bottom: 1px solid rgba(255,255,255,0.07);
    }

    .service-list { grid-template-columns: 1fr; gap: 16px; }

    .form-row { grid-template-columns: 1fr; gap: 0; }

    .section { padding: 72px 0; }
    .section-title { font-size: 1.4rem; }
    .company-table th { width: 110px; }
}

@media (max-width: 480px) {
    .hero-content h1 { font-size: 1.8rem; }
    .flow-steps { grid-template-columns: 1fr; gap: 40px; }
    .result-num { font-size: 2.8rem; }
}