:root {
    --bg: #eef2f7;
    --bg-strong: #e3e9f1;
    --paper: rgba(255, 255, 255, 0.92);
    --paper-solid: #ffffff;
    --ink: #152033;
    --ink-soft: #5b6780;
    --line: rgba(29, 47, 78, 0.10);
    --accent: #1e4f9b;
    --accent-dark: #173c77;
    --accent-soft: #dfe8f7;
    --shadow: 0 24px 60px rgba(21, 32, 51, 0.08);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--ink);
    background:
        radial-gradient(circle at top left, rgba(30, 79, 155, 0.12), transparent 28%),
        radial-gradient(circle at top right, rgba(31, 50, 88, 0.08), transparent 25%),
        linear-gradient(180deg, #f4f7fb 0%, #eef2f7 48%, #e8edf5 100%);
    font-family: "Noto Sans SC", sans-serif;
}

img {
    display: block;
    max-width: 100%;
}

a {
    color: inherit;
    text-decoration: none;
}

.site-shell {
    min-height: 100vh;
}

.container {
    width: min(1180px, calc(100% - 40px));
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(14px);
    background: rgba(244, 247, 251, 0.84);
    border-bottom: 1px solid rgba(29, 47, 78, 0.06);
}

.site-header__inner,
.site-footer__inner,
.hero-actions,
.card-topline,
.tag-group,
.cta-panel,
.contact-layout,
.card-actions {
    display: flex;
    gap: 16px;
}

.site-header__inner,
.site-footer__inner {
    align-items: center;
    justify-content: space-between;
    padding: 18px 0;
}

.brand-mark {
    display: inline-flex;
    align-items: center;
    gap: 12px;
}

.brand-mark strong,
.hero-copy h1,
.section-heading h2,
.detail-copy h1,
.cta-panel h2,
.contact-layout h1 {
    font-family: "Noto Serif SC", serif;
}

.brand-mark__logo {
    display: grid;
    width: 50px;
    height: 50px;
    place-items: center;
    border-radius: 16px;
    color: #f8fbff;
    font-weight: 800;
    font-size: 0.85rem;
    background: linear-gradient(145deg, var(--accent), var(--accent-dark));
    box-shadow: 0 10px 25px rgba(30, 79, 155, 0.22);
}

.brand-mark small,
.section-heading p,
.app-card p,
.scenario-item p,
.content-card p,
.detail-copy p,
.site-footer p,
.screen-card p,
.metric-card span {
    color: var(--ink-soft);
}

.main-nav {
    display: inline-flex;
    gap: 10px;
}

.main-nav a {
    padding: 10px 14px;
    border-radius: 999px;
    color: var(--ink-soft);
    transition: 0.25s ease;
}

.main-nav a:hover,
.main-nav a.is-active {
    color: var(--ink);
    background: rgba(30, 79, 155, 0.08);
}

.hero-section,
.detail-hero {
    padding: 72px 0 36px;
}

.hero-grid,
.detail-hero__grid,
.split-layout,
.contact-layout {
    display: grid;
    gap: 32px;
}

.hero-grid,
.detail-hero__grid {
    grid-template-columns: 1fr 0.92fr;
    align-items: center;
}

.eyebrow {
    display: inline-flex;
    padding: 7px 12px;
    border: 1px solid rgba(30, 79, 155, 0.14);
    border-radius: 999px;
    color: var(--accent-dark);
    background: rgba(30, 79, 155, 0.07);
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.hero-copy h1,
.detail-copy h1,
.contact-layout h1 {
    margin: 18px 0 16px;
    font-size: clamp(2.5rem, 5vw, 4.6rem);
    line-height: 1.06;
}

.hero-copy p,
.detail-copy__lead {
    max-width: 680px;
    font-size: 1.05rem;
    line-height: 1.9;
}

.hero-note {
    margin: 20px 0 0;
    color: var(--ink-soft);
}

.hero-stage,
.detail-visual,
.form-card,
.content-card,
.scenario-item,
.metric-card,
.app-card,
.screen-card,
.cta-panel {
    border: 1px solid var(--line);
    background: var(--paper);
    box-shadow: var(--shadow);
}

.hero-stage {
    position: relative;
    padding: 26px;
    border-radius: 34px;
    overflow: hidden;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(237, 242, 250, 0.92)),
        var(--paper);
}

.hero-stage img,
.detail-visual img,
.screen-card img,
.app-card__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-stage img {
    min-height: 540px;
    border-radius: 26px;
}

.hero-stage__panel {
    position: absolute;
    top: 24px;
    left: 24px;
    z-index: 1;
    width: min(300px, calc(100% - 48px));
    padding: 20px;
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(12px);
}

.hero-stage__panel p {
    margin: 0 0 14px;
    font-size: 12px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent-dark);
}

.hero-stage__panel ul {
    padding: 0;
    margin: 0;
    list-style: none;
}

.hero-stage__panel li {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid rgba(98, 64, 39, 0.08);
}

.hero-stage__panel li:last-child {
    border-bottom: 0;
}

.hero-actions {
    flex-wrap: wrap;
    margin: 28px 0 32px;
}

.button,
.text-link,
.back-link {
    transition: 0.25s ease;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 24px;
    border-radius: 999px;
    font-weight: 700;
}

.button--small {
    min-height: 42px;
    padding: 0 18px;
    font-size: 0.95rem;
}

.button--primary {
    color: #f8fbff;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
}

.button--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(30, 79, 155, 0.18);
}

.button--ghost {
    border: 1px solid rgba(29, 47, 78, 0.10);
    background: rgba(255, 255, 255, 0.54);
}

.button--ghost:hover {
    background: rgba(30, 79, 155, 0.06);
}

.button--block {
    width: 100%;
}

.section-block--compact {
    padding-top: 12px;
}

.section-block--soft {
    background: linear-gradient(180deg, rgba(30, 79, 155, 0.04), rgba(255, 255, 255, 0));
}

.metrics-grid,
.advantage-grid,
.screen-grid,
.app-grid {
    display: grid;
    gap: 20px;
}

.metrics-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.metric-card {
    padding: 22px;
    border-radius: 24px;
}

.metric-card strong {
    display: block;
    margin-bottom: 8px;
    font-size: 2rem;
    font-family: "Noto Serif SC", serif;
}

.section-block {
    padding: 48px 0 36px;
}

.section-block--dark,
.section-block--accent {
    background: linear-gradient(180deg, rgba(30, 79, 155, 0.05), rgba(255, 255, 255, 0));
}

.brand-intro {
    padding-top: 8px;
}

.brand-intro__panel {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 24px;
    padding: 26px 28px;
    border: 1px solid var(--line);
    border-radius: 30px;
    background:
        linear-gradient(135deg, rgba(30, 79, 155, 0.08), rgba(255, 255, 255, 0.78)),
        var(--paper-solid);
    box-shadow: var(--shadow);
}

.brand-intro__copy h2 {
    margin: 14px 0 12px;
    font-size: clamp(1.8rem, 3.2vw, 2.6rem);
    line-height: 1.18;
    font-family: "Noto Serif SC", serif;
}

.brand-intro__copy p {
    margin: 0;
    color: var(--ink-soft);
    line-height: 1.9;
}

.brand-intro__list {
    display: flex;
    flex-wrap: wrap;
    align-content: start;
    gap: 12px;
}

.brand-intro__list span {
    display: inline-flex;
    align-items: center;
    min-height: 46px;
    padding: 0 16px;
    border-radius: 999px;
    color: var(--accent-dark);
    background: rgba(30, 79, 155, 0.08);
    border: 1px solid rgba(30, 79, 155, 0.10);
    font-weight: 700;
}

.product-architecture {
    padding-top: 12px;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.category-card {
    padding: 24px;
    border: 1px solid var(--line);
    border-radius: 26px;
    background: rgba(255, 255, 255, 0.78);
    box-shadow: var(--shadow);
}

.category-card__count {
    display: inline-flex;
    margin-bottom: 16px;
    color: var(--accent-dark);
    font-size: 12px;
    letter-spacing: 0.14em;
}

.category-card h3 {
    margin: 0 0 10px;
    font-size: 1.15rem;
}

.category-card p {
    margin: 0;
    color: var(--ink-soft);
    line-height: 1.8;
}

.featured-product {
    display: grid;
    grid-template-columns: 1.02fr 0.98fr;
    gap: 28px;
    padding: 30px;
    border: 1px solid var(--line);
    border-radius: 34px;
    background:
        linear-gradient(135deg, rgba(30, 79, 155, 0.10), rgba(255, 255, 255, 0.72)),
        var(--paper-solid);
    box-shadow: var(--shadow);
}

.featured-product__copy h2 {
    margin: 14px 0 12px;
    font-size: clamp(2.2rem, 4vw, 3.3rem);
    line-height: 1.1;
    font-family: "Noto Serif SC", serif;
}

.featured-product__lead {
    margin: 0 0 12px;
    font-size: 1.08rem;
    color: var(--ink);
}

.featured-product__copy p {
    color: var(--ink-soft);
    line-height: 1.9;
}

.featured-product__visual {
    overflow: hidden;
    border-radius: 28px;
    border: 1px solid rgba(255, 255, 255, 0.35);
}

.featured-product__visual img {
    width: 100%;
    height: 100%;
    min-height: 460px;
    object-fit: cover;
}

.hero-preview-grid,
.featured-list-grid,
.catalog-grid {
    display: grid;
    gap: 18px;
}

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

.hero-preview-card,
.featured-list-card,
.catalog-card {
    border: 1px solid var(--line);
    background: var(--paper);
    box-shadow: var(--shadow);
}

.hero-preview-card {
    display: grid;
    grid-template-columns: 104px 1fr;
    gap: 14px;
    align-items: center;
    padding: 16px;
    border-radius: 24px;
}

.hero-preview-card__thumb,
.catalog-card__thumb {
    display: block;
    overflow: hidden;
    border-radius: 22px;
    background: rgba(30, 79, 155, 0.06);
}

.hero-preview-card__thumb img,
.catalog-card__thumb img {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
}

.hero-preview-card__content h3,
.featured-list-card__content h3,
.catalog-card__body h3 {
    margin: 0 0 8px;
    font-size: 1.18rem;
}

.hero-preview-card__content p,
.catalog-card__body p,
.featured-list-card__content p {
    margin: 0;
    color: var(--ink-soft);
    line-height: 1.8;
}

.catalog-card__extra {
    margin-top: 10px;
    font-size: 0.92rem;
    color: var(--accent-dark);
}

.hero-preview-card .button {
    margin-top: 14px;
}

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

.featured-list-card {
    overflow: hidden;
    border-radius: 30px;
}

.featured-list-card__media {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 260px;
    padding: 24px;
    background:
        linear-gradient(180deg, rgba(30, 79, 155, 0.04), rgba(255, 255, 255, 0.88)),
        rgba(255, 255, 255, 0.92);
}

.featured-list-card__media img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.featured-list-card__content {
    padding: 22px;
}

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

.catalog-card {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 18px;
    align-items: start;
    padding: 18px;
    border-radius: 28px;
}

.catalog-card__meta,
.catalog-card__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.catalog-card__meta {
    margin-bottom: 12px;
    color: var(--accent-dark);
    font-size: 12px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.catalog-card__update {
    margin: 0 0 10px;
    color: var(--ink);
    font-weight: 700;
}

.catalog-card__actions {
    align-items: center;
    justify-content: space-between;
    margin-top: 16px;
}

.split-layout--balanced {
    grid-template-columns: 1fr 1fr;
}

.section-heading {
    max-width: 820px;
    margin-bottom: 28px;
}

.section-heading--compact {
    margin-bottom: 0;
}

.section-heading h2,
.cta-panel h2 {
    margin: 14px 0;
    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 1.16;
}

.app-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.app-card {
    overflow: hidden;
    border-radius: 30px;
}

.app-card__media {
    height: 240px;
}

.app-card__content {
    padding: 24px;
}

.card-topline,
.tag-group,
.card-actions {
    flex-wrap: wrap;
}

.card-topline {
    justify-content: space-between;
    color: var(--accent-dark);
    font-size: 12px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.app-card h3,
.content-card h3,
.scenario-item h3,
.screen-card h3 {
    margin: 16px 0 10px;
    font-size: 1.25rem;
}

.app-card__tagline,
.detail-copy__lead {
    color: var(--ink);
}

.feature-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding: 0;
    margin: 18px 0 0;
    list-style: none;
}

.feature-list li,
.tag-group span {
    padding: 8px 12px;
    border-radius: 999px;
    color: var(--ink);
    background: var(--accent-soft);
    border: 1px solid rgba(30, 79, 155, 0.12);
    font-size: 0.95rem;
}

.card-actions {
    align-items: center;
    margin-top: 20px;
    justify-content: space-between;
}

.text-link,
.back-link {
    display: inline-flex;
    color: var(--accent-dark);
    font-weight: 700;
}

.text-link:hover,
.back-link:hover {
    transform: translateX(4px);
}

.advantage-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.content-card,
.scenario-item,
.screen-card,
.form-card,
.cta-panel {
    padding: 26px;
    border-radius: 30px;
}

.content-card__index {
    color: var(--accent-dark);
    font-size: 12px;
    letter-spacing: 0.16em;
}

.split-layout,
.contact-layout {
    grid-template-columns: 0.92fr 1.08fr;
    align-items: start;
}

.scenario-list {
    display: grid;
    gap: 16px;
}

.contact-info-list {
    display: grid;
    gap: 14px;
    margin: 18px 0 0;
}

.contact-info-item {
    display: grid;
    grid-template-columns: 88px 1fr;
    gap: 14px;
    align-items: start;
}

.contact-info-item dt,
.contact-info-item dd {
    margin: 0;
    line-height: 1.8;
}

.contact-info-item dt {
    color: var(--ink-soft);
}

.contact-info-item dd {
    color: var(--ink);
    word-break: break-word;
}

.detail-visual,
.screen-card {
    overflow: hidden;
    border-radius: 32px;
}

.detail-visual {
    padding: 20px;
}

.detail-side {
    display: grid;
    gap: 20px;
}

.detail-visual img {
    min-height: 520px;
    border-radius: 26px;
}

.detail-stat-grid,
.detail-info-list {
    display: grid;
    gap: 14px;
}

.detail-stat-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin: 28px 0 0;
}

.detail-stat-card,
.detail-panel {
    border: 1px solid var(--line);
    background: var(--paper);
    box-shadow: var(--shadow);
}

.detail-stat-card {
    padding: 18px 20px;
    border-radius: 22px;
}

.detail-stat-card strong {
    display: block;
    margin-bottom: 8px;
    font-size: 1.2rem;
    font-family: "Noto Serif SC", serif;
}

.detail-stat-card span,
.detail-panel p,
.detail-info-item dt,
.detail-info-item dd {
    color: var(--ink-soft);
}

.detail-panel {
    padding: 24px;
    border-radius: 28px;
}

.detail-panel__heading h2 {
    margin: 14px 0 0;
    font-size: clamp(1.4rem, 3vw, 2rem);
    line-height: 1.25;
    font-family: "Noto Serif SC", serif;
}

.detail-info-list {
    margin: 20px 0 0;
}

.detail-info-item {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 16px;
    align-items: start;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--line);
}

.detail-info-item:last-child {
    padding-bottom: 0;
    border-bottom: 0;
}

.detail-info-item dt,
.detail-info-item dd {
    margin: 0;
    line-height: 1.8;
}

.detail-info-item dd {
    color: var(--ink);
    word-break: break-word;
}

.detail-cta-panel {
    align-items: center;
}

.detail-cta-panel p {
    max-width: 640px;
    color: var(--ink-soft);
    line-height: 1.9;
}

.detail-page-hero {
    padding: 64px 0 24px;
}

.detail-page-hero__grid {
    display: grid;
    grid-template-columns: 1.08fr 0.92fr;
    gap: 24px;
    align-items: start;
}

.detail-app-card,
.detail-info-card,
.detail-feature-item {
    border: 1px solid var(--line);
    background: var(--paper);
    box-shadow: var(--shadow);
}

.detail-app-card,
.detail-info-card {
    padding: 26px;
    border-radius: 30px;
}

.detail-app-card__main {
    display: grid;
    grid-template-columns: 132px 1fr;
    gap: 22px;
    align-items: start;
    margin-top: 18px;
}

.detail-app-card__icon {
    overflow: hidden;
    border-radius: 28px;
    background: rgba(30, 79, 155, 0.06);
}

.detail-app-card__icon img {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
}

.detail-app-card__copy h1 {
    margin: 14px 0 12px;
    font-size: clamp(2.2rem, 4vw, 3.4rem);
    line-height: 1.08;
    font-family: "Noto Serif SC", serif;
}

.detail-info-card h2 {
    margin: 14px 0 0;
    font-size: clamp(1.5rem, 3vw, 2rem);
    line-height: 1.25;
    font-family: "Noto Serif SC", serif;
}

.detail-feature-list {
    display: grid;
    gap: 16px;
}

.detail-richtext-card,
.detail-links-card {
    padding: 26px;
    border-radius: 30px;
    border: 1px solid var(--line);
    background: var(--paper);
    box-shadow: var(--shadow);
}

.detail-richtext,
.detail-empty-state {
    color: var(--ink-soft);
    line-height: 1.9;
}

.detail-link-list {
    display: grid;
    gap: 18px;
    margin: 0;
}

.detail-link-item {
    display: grid;
    gap: 8px;
}

.detail-link-item dt {
    font-weight: 700;
}

.detail-link-item dd {
    margin: 0;
}

.detail-link-url {
    word-break: break-all;
}

.detail-feature-item {
    padding: 22px 24px;
    border-radius: 24px;
}

.detail-feature-item strong {
    display: block;
    margin-bottom: 10px;
    font-size: 1rem;
}

.detail-feature-item p {
    margin: 0;
    color: var(--ink-soft);
    line-height: 1.9;
}

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

.screen-card img {
    height: 320px;
    border-radius: 24px;
}

.screen-card__content {
    padding-top: 18px;
}

.cta-section {
    padding-bottom: 72px;
}

.cta-panel {
    align-items: center;
    justify-content: space-between;
    background:
        linear-gradient(135deg, rgba(30, 79, 155, 0.08), rgba(255, 255, 255, 0.52)),
        var(--paper-solid);
}

.form-card form {
    display: grid;
    gap: 18px;
}

.form-field {
    display: grid;
    gap: 10px;
}

.form-field span {
    font-weight: 700;
}

.form-field input,
.form-field select,
.form-field textarea {
    width: 100%;
    border: 1px solid rgba(98, 64, 39, 0.12);
    border-radius: 18px;
    padding: 14px 16px;
    color: var(--ink);
    background: rgba(255, 255, 255, 0.58);
    font: inherit;
    outline: none;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
    border-color: rgba(30, 79, 155, 0.45);
    box-shadow: 0 0 0 4px rgba(30, 79, 155, 0.08);
}

.form-field small {
    color: #b0372f;
}

.flash-banner {
    margin-top: 24px;
    padding: 16px 18px;
    border: 1px solid rgba(30, 79, 155, 0.16);
    border-radius: 18px;
    color: var(--ink);
    background: rgba(30, 79, 155, 0.08);
}

.site-footer {
    padding: 28px 0 40px;
}

.site-footer__meta {
    display: grid;
    gap: 8px;
}

.site-footer__meta p {
    margin: 0;
    max-width: 760px;
    line-height: 1.8;
}

.site-footer__links {
    display: inline-flex;
    gap: 18px;
    color: var(--ink-soft);
}

.reveal-on-scroll {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 980px) {
    .hero-grid,
    .detail-hero__grid,
    .detail-page-hero__grid,
    .split-layout,
    .contact-layout,
    .brand-intro__panel,
    .featured-product,
    .detail-stat-grid,
    .category-grid,
    .app-grid,
    .advantage-grid,
    .screen-grid,
    .metrics-grid {
        grid-template-columns: 1fr;
    }

    .site-header__inner,
    .site-footer__inner,
    .cta-panel {
        flex-direction: column;
        align-items: flex-start;
    }

    .contact-info-item {
        grid-template-columns: 1fr;
        gap: 4px;
    }

    .hero-stage img,
    .detail-visual img {
        min-height: 360px;
    }

    .hero-preview-grid,
    .featured-list-grid,
    .catalog-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 720px) {
    .container {
        width: min(100% - 24px, 1180px);
    }

    .main-nav {
        width: 100%;
        overflow-x: auto;
    }

    .site-header__inner {
        align-items: flex-start;
    }

    .hero-copy h1,
    .detail-copy h1,
    .contact-layout h1 {
        font-size: 2.25rem;
    }

    .hero-stage,
    .detail-visual,
    .content-card,
    .scenario-item,
    .screen-card,
    .app-card,
    .detail-app-card,
    .detail-info-card,
    .detail-feature-item,
    .hero-preview-card,
    .featured-list-card,
    .catalog-card,
    .detail-panel,
    .detail-stat-card,
    .cta-panel,
    .form-card,
    .metric-card {
        border-radius: 22px;
    }

    .catalog-card,
    .hero-preview-card,
    .detail-app-card__main {
        grid-template-columns: 1fr;
    }

    .detail-info-item {
        grid-template-columns: 1fr;
        gap: 6px;
    }
}