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

:root {
    --sky: #29a9ff;
    --sky-mid: #148ff0;
    --sky-dark: #0e66d6;
    --navy: #123768;
    --ink: #1a2540;
    --muted: #6c7687;
    --quiet: #f6fbff;
    --ice: #edf8ff;
    --paper: #ffffff;
    --line: #cfe3f6;
    --gold: #b79246;
    --shadow: 0 18px 44px rgba(8, 37, 74, 0.1);
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
    --font-serif: "Source Han Serif SC", "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
}

html {
    scroll-behavior: smooth;
}

body {
    color: var(--ink);
    background: var(--paper);
    font-family: var(--font-sans);
    line-height: 1.72;
    letter-spacing: 0;
    -webkit-text-size-adjust: 100%;
}

a {
    color: inherit;
}

.top-ribbon {
    display: flex;
    align-items: center;
    gap: 14px;
    min-height: 42px;
    padding: 7px clamp(22px, 5vw, 88px);
    color: #f7fbff;
    background: linear-gradient(90deg, #34abff 0%, #72c6ff 100%);
    font-size: 13px;
}

.top-ribbon span {
    margin-right: auto;
    font-weight: 800;
}

.top-ribbon a {
    color: rgba(255, 255, 255, 0.84);
    text-decoration: none;
}

.top-ribbon a:hover {
    color: #fff;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
    min-height: 78px;
    padding: 14px clamp(22px, 5vw, 88px);
    border-bottom: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(12px);
}

.brand {
    display: flex;
    align-items: center;
    gap: 13px;
    color: var(--navy);
    text-decoration: none;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 43px;
    height: 43px;
    border: 1px solid rgba(41, 169, 255, 0.4);
    background: linear-gradient(135deg, #ffffff 0%, #eaf7ff 100%);
    color: var(--sky-mid);
    font-size: 14px;
    font-weight: 900;
}

.brand-lockup {
    display: grid;
    gap: 1px;
}

.brand-name {
    color: var(--navy);
    font-size: 16px;
    font-weight: 700;
    white-space: nowrap;
}

.brand-en {
    color: var(--muted);
    font-size: 11px;
    font-weight: 700;
}

.site-nav {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 2px;
    color: #334258;
    font-size: 15px;
}

.site-nav a {
    padding: 8px 10px;
    text-decoration: none;
}

.site-nav a:hover {
    color: var(--sky-dark);
    background: var(--ice);
}

.hero {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(330px, 0.42fr);
    gap: clamp(34px, 6vw, 84px);
    align-items: end;
    min-height: 620px;
    padding: clamp(76px, 9vw, 126px) clamp(22px, 5vw, 88px) clamp(58px, 7vw, 88px);
    background:
        linear-gradient(90deg, rgba(41, 169, 255, 0.04) 1px, transparent 1px),
        linear-gradient(180deg, rgba(41, 169, 255, 0.04) 1px, transparent 1px),
        linear-gradient(180deg, #ffffff 0%, #f9fdff 72%, #eef8ff 100%);
    background-size: 72px 72px, 72px 72px, auto;
}

.hero::before {
    content: "";
    position: absolute;
    left: clamp(22px, 5vw, 88px);
    right: clamp(22px, 5vw, 88px);
    top: 38px;
    height: 1px;
    background: #dcecf9;
}

.hero-copy {
    position: relative;
    max-width: 920px;
}

.eyebrow,
.section-kicker {
    display: inline-flex;
    align-items: center;
    margin-bottom: 16px;
    color: var(--sky-dark);
    font-size: 14px;
    font-weight: 820;
}

.eyebrow::before,
.section-kicker::before {
    content: "";
    width: 34px;
    height: 2px;
    margin-right: 12px;
    background: var(--sky);
}

.hero h1 {
    display: grid;
    gap: 8px;
    max-width: 880px;
    margin-bottom: 26px;
    color: var(--navy);
    font-family: var(--font-serif);
    font-size: clamp(40px, 4.5vw, 64px);
    line-height: 1.08;
    font-weight: 700;
    letter-spacing: 0;
}

.hero h1 span {
    display: block;
}

.lead {
    max-width: 780px;
    color: #41516a;
    font-size: clamp(17px, 1.5vw, 21px);
}

.hero-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 34px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 10px 18px;
    border: 1px solid transparent;
    font-weight: 760;
    text-decoration: none;
    transition: transform 0.2s ease, background 0.2s ease;
}

.button:hover {
    transform: translateY(-2px);
}

.button.primary {
    background: linear-gradient(135deg, var(--sky) 0%, var(--sky-dark) 100%);
    color: #fff;
}

.button.secondary {
    border-color: var(--line);
    background: #fff;
    color: var(--navy);
}

.at-a-glance,
.hero-panel {
    position: relative;
    padding: 28px;
    border-top: 4px solid var(--sky);
    background: rgba(255, 255, 255, 0.92);
    box-shadow: var(--shadow);
}

.panel-kicker {
    margin-bottom: 14px;
    color: var(--gold);
    font-size: 13px;
    font-weight: 820;
}

.at-a-glance dl,
.signal-list {
    display: grid;
    gap: 0;
}

.at-a-glance div,
.signal-list div {
    display: grid;
    grid-template-columns: 92px 1fr;
    gap: 16px;
    padding: 15px 0;
    border-top: 1px solid var(--line);
}

.at-a-glance div:first-child {
    border-top: 0;
}

.at-a-glance dt,
.signal-list dt {
    color: var(--muted);
    font-size: 14px;
}

.at-a-glance dd,
.signal-list dd {
    color: var(--ink);
    font-weight: 760;
}

.mission-band {
    display: grid;
    grid-template-columns: minmax(260px, 0.45fr) minmax(0, 1fr);
    gap: clamp(28px, 5vw, 78px);
    padding: clamp(54px, 6vw, 84px) clamp(22px, 5vw, 88px);
    color: var(--ink);
    background: linear-gradient(135deg, #eff9ff 0%, #f8fdff 100%);
    border-top: 1px solid #d8ebfb;
    border-bottom: 1px solid #d8ebfb;
}

.mission-band .section-kicker {
    color: var(--sky-dark);
}

.mission-band h2 {
    color: var(--navy);
    font-family: var(--font-serif);
    font-size: clamp(30px, 4vw, 52px);
    line-height: 1.16;
    font-weight: 700;
}

.mission-band p {
    max-width: 850px;
    color: var(--muted);
    font-size: clamp(17px, 1.5vw, 20px);
}

.anchor-strip {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    padding: 18px clamp(22px, 5vw, 88px);
    border-bottom: 1px solid var(--line);
    background: #fff;
}

.anchor-strip span {
    padding: 6px 10px;
    border: 1px solid var(--line);
    color: var(--sky-dark);
    background: var(--ice);
    font-size: 14px;
    font-weight: 720;
}

.section {
    padding: clamp(62px, 7vw, 104px) clamp(22px, 5vw, 88px);
}

.section.muted {
    background: var(--quiet);
}

.section-heading {
    max-width: 880px;
    margin-bottom: 38px;
}

.split-heading {
    display: grid;
    grid-template-columns: minmax(240px, 0.42fr) minmax(0, 1fr);
    gap: clamp(24px, 5vw, 72px);
    max-width: none;
    align-items: end;
}

.section-heading h2,
.contact h2,
.team h2,
.hero-panel h2 {
    color: var(--navy);
    font-family: var(--font-serif);
    font-size: clamp(30px, 3.5vw, 48px);
    line-height: 1.18;
    font-weight: 700;
    letter-spacing: 0;
}

.section-heading p,
.contact p,
.team p,
.hero-panel p {
    color: var(--muted);
}

.solution-grid,
.timeline,
.article-list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-top: 1px solid var(--line);
    border-left: 1px solid var(--line);
}

.solution-card,
.article-list article,
.detail-card,
.timeline article {
    min-height: 260px;
    padding: 28px;
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    background: #fff;
}

.solution-card:hover,
.article-list article:hover,
.timeline article:hover {
    background: #fafdff;
}

.update-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
}

.update-card {
    display: grid;
    gap: 14px;
    padding: 26px;
    border: 1px solid var(--line);
    background: #fff;
    box-shadow: 0 10px 34px rgba(8, 40, 79, 0.055);
}

.update-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    color: var(--sky-dark);
    font-size: 13px;
    font-weight: 780;
}

.update-card h3 {
    color: var(--navy);
    font-family: var(--font-serif);
    font-size: 21px;
    line-height: 1.34;
    font-weight: 700;
}

.update-card p {
    color: var(--muted);
}

.update-source {
    padding-top: 14px;
    border-top: 1px solid var(--line);
    color: var(--sky-dark);
    font-size: 14px;
}

.card-label,
.article-list span,
.timeline span {
    display: inline-flex;
    margin-bottom: 18px;
    color: var(--sky-dark);
    font-size: 13px;
    font-weight: 820;
}

.solution-card h3,
.article-list h3,
.detail-card h3,
.timeline h3 {
    margin-bottom: 12px;
    color: var(--navy);
    font-family: var(--font-serif);
    font-size: 22px;
    line-height: 1.32;
    font-weight: 700;
}

.solution-card p,
.article-list p,
.detail-card p,
.detail-card li,
.timeline p {
    color: var(--muted);
}

.solution-card ul,
.detail-card ul {
    margin-top: 18px;
    padding-left: 18px;
}

.text-link {
    display: inline-flex;
    margin-top: 22px;
    color: var(--sky-dark);
    font-weight: 780;
    text-decoration: none;
}

.text-link::after {
    content: ">";
    margin-left: 8px;
}

.text-link:hover {
    text-decoration: underline;
}

.capability-grid,
.module-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-top: 1px solid var(--line);
    border-left: 1px solid var(--line);
}

.capability-item,
.module-grid div {
    display: grid;
    gap: 10px;
    min-height: 132px;
    padding: 22px;
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    background: #fff;
}

.capability-item strong,
.module-grid strong {
    color: var(--navy);
    font-size: 18px;
}

.capability-item span,
.module-grid span {
    color: var(--muted);
    font-size: 15px;
}

.product {
    background: linear-gradient(135deg, #1f9eff 0%, #4fbfff 100%);
    color: #fff;
}

.product .section-kicker {
    color: #bfe1ff;
}

.product .section-heading h2,
.product .module-grid strong {
    color: #fff;
}

.product .section-heading p,
.product .module-grid span {
    color: rgba(255, 255, 255, 0.76);
}

.product .module-grid {
    border-color: rgba(255, 255, 255, 0.18);
}

.product .module-grid div {
    border-color: rgba(255, 255, 255, 0.18);
    background: rgba(255, 255, 255, 0.07);
}

.product .button.primary {
    background: #fff;
    color: var(--navy);
}

.product-button {
    margin-top: 28px;
}

.team {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: clamp(28px, 5vw, 64px);
    align-items: center;
}

.team-single {
    grid-template-columns: minmax(0, 1fr);
}

.team-text {
    max-width: 880px;
}

.team-text p + p {
    margin-top: 14px;
}

.faq-list {
    display: grid;
    gap: 12px;
    max-width: 980px;
}

details {
    border: 1px solid var(--line);
    background: #fff;
    padding: 18px 20px;
}

summary {
    cursor: pointer;
    color: var(--navy);
    font-weight: 780;
}

details p {
    margin-top: 12px;
    color: var(--muted);
}

.contact {
    display: grid;
    grid-template-columns: minmax(0, 0.82fr) minmax(320px, 1.18fr);
    gap: 38px;
    align-items: start;
    color: var(--ink);
    background: linear-gradient(135deg, #eff9ff 0%, #f8fdff 100%);
    border-top: 1px solid #d8ebfb;
    border-bottom: 1px solid #d8ebfb;
}

.contact .section-kicker {
    color: var(--sky-dark);
}

.contact h2 {
    color: var(--navy);
}

.contact p {
    color: var(--muted);
}

.contact-side {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 160px;
    gap: 14px;
    margin-top: 28px;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    border-top: 1px solid #d8ebfb;
    border-left: 1px solid #d8ebfb;
}

.contact-simple {
    grid-template-columns: minmax(0, 1fr) 220px;
}

.contact-grid div {
    display: grid;
    gap: 6px;
    padding: 18px;
    border-right: 1px solid #d8ebfb;
    border-bottom: 1px solid #d8ebfb;
    background: rgba(255, 255, 255, 0.92);
}

.contact-grid strong {
    color: var(--sky-dark);
    font-size: 14px;
}

.contact-grid a {
    color: var(--navy);
    word-break: break-word;
}

.contact-side > div,
.inquiry-form {
    border: 1px solid #d8ebfb;
    background: rgba(255, 255, 255, 0.92);
}

.contact-side > div {
    display: grid;
    gap: 8px;
    padding: 18px;
}

.contact-side strong,
.inquiry-form span {
    color: var(--sky-dark);
    font-size: 14px;
    font-weight: 760;
}

.contact-side a {
    color: var(--navy);
    word-break: break-word;
}

.contact-qr {
    display: inline-grid;
    gap: 10px;
    margin-top: 28px;
    padding: 18px;
    border: 1px solid #d8ebfb;
    background: rgba(255, 255, 255, 0.92);
}

.contact-qr strong {
    color: var(--sky-dark);
    font-size: 14px;
    font-weight: 760;
}

.contact-qr img {
    display: block;
    width: min(180px, 44vw);
    height: auto;
}

.qr-card img {
    display: block;
    width: min(180px, 100%);
    height: auto;
}

.inquiry-form {
    display: grid;
    gap: 16px;
    padding: 22px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.inquiry-form label {
    display: grid;
    gap: 7px;
}

.inquiry-form input,
.inquiry-form select,
.inquiry-form textarea {
    width: 100%;
    border: 1px solid #cfe4f6;
    background: #fbfeff;
    color: var(--ink);
    font: inherit;
    padding: 13px 14px;
    outline: none;
}

.inquiry-form input:focus,
.inquiry-form select:focus,
.inquiry-form textarea:focus {
    border-color: var(--sky);
    box-shadow: 0 0 0 3px rgba(25, 166, 255, 0.16);
}

.inquiry-form textarea {
    min-height: 132px;
    resize: vertical;
}

.form-submit {
    width: 100%;
    border: 0;
    cursor: pointer;
}

.form-submit:disabled {
    cursor: wait;
    opacity: 0.7;
}

.form-status {
    min-height: 24px;
    margin: 0;
    color: var(--navy);
}

.form-trap {
    display: none;
}

.site-footer {
    display: grid;
    gap: 4px;
    padding: 28px clamp(22px, 5vw, 88px);
    background: linear-gradient(90deg, #0b3f7e 0%, #1156a8 100%);
    color: #fff;
    font-size: 14px;
}

.site-footer p + p {
    color: rgba(255, 255, 255, 0.68);
}

.subpage-hero {
    min-height: 500px;
}

.subpage-hero h1 {
    font-size: clamp(38px, 4.8vw, 64px);
}

.detail-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    border-top: 1px solid var(--line);
    border-left: 1px solid var(--line);
}

.article-body {
    max-width: 980px;
    margin: 0 auto;
}

.article-body h2 {
    margin: 34px 0 12px;
    color: var(--navy);
    font-family: var(--font-serif);
    font-size: clamp(26px, 3vw, 38px);
    line-height: 1.22;
    font-weight: 700;
}

.article-body p {
    margin-top: 14px;
    color: #41516a;
    font-size: 18px;
    line-height: 1.9;
}

.article-body ul {
    margin: 16px 0 0 20px;
    color: #41516a;
    font-size: 18px;
    line-height: 1.9;
}

.article-note {
    margin-bottom: 30px;
    padding: 18px 20px;
    border-left: 4px solid var(--sky);
    background: var(--ice);
    color: var(--navy);
    font-weight: 700;
}

.wide-card {
    grid-column: 1 / -1;
}

@media (max-width: 980px) {
    .top-ribbon {
        flex-wrap: wrap;
    }

    .top-ribbon span {
        width: 100%;
    }

    .site-header {
        align-items: flex-start;
        flex-direction: column;
    }

    .site-nav {
        justify-content: flex-start;
    }

    .hero,
    .contact,
    .team,
    .mission-band,
    .split-heading {
        grid-template-columns: 1fr;
    }

    .solution-grid,
    .timeline,
    .article-list,
    .update-grid,
    .capability-grid,
    .module-grid {
        grid-template-columns: 1fr;
    }

    .detail-grid,
    .contact-grid,
    .contact-side,
    .form-row {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 640px) {
    .top-ribbon,
    .site-header,
    .hero,
    .mission-band,
    .anchor-strip,
    .section,
    .site-footer {
        padding-left: 22px;
        padding-right: 22px;
    }

    .brand {
        align-items: flex-start;
    }

    .brand-name {
        white-space: normal;
    }

    .brand-en {
        display: none;
    }

    .hero {
        min-height: auto;
        padding-top: 54px;
    }

    .hero h1 {
        font-size: 31px;
        line-height: 1.12;
    }

    .site-nav {
        gap: 8px;
    }

    .site-nav a {
        padding: 5px 2px;
    }

    .lead {
        font-size: 17px;
    }

    .at-a-glance div,
    .signal-list div,
    .detail-grid,
    .update-grid,
    .contact-grid,
    .contact-side,
    .form-row {
        grid-template-columns: 1fr;
    }
}