* {
    box-sizing: border-box;
}
:root {
    --primary: rgb(70,139,223);
    --primary-dark: #236fbe;
    --primary-soft: #edf6ff;
    --ink: #102033;
    --muted: #64748b;
    --line: #dbe8f7;
    --panel: rgba(255, 255, 255, 0.86);
    --bg: #f7fbff;
    --radius: 22px;
    --shadow: 0 18px 48px rgba(42, 91, 145, 0.10);
}
html {
    scroll-behavior: smooth;
}
body {
    margin: 0;
    color: var(--ink);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    background: linear-gradient(180deg, #ffffff 0%, #f4f9ff 42%, #ffffff 100%);
    line-height: 1.75;
    overflow-x: hidden;
}
a {
    color: inherit;
    text-decoration: none;
}
img {
    max-width: 100%;
    height: auto;
    display: block;
}
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.84);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(219, 232, 247, 0.78);
}
.header-inner, .container, .footer-inner {
    width: min(1140px, calc(100% - 36px));
    margin: 0 auto;
}
.header-inner {
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}
.brand, .footer-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: #102033;
}
.logo {
    width: 38px;
    height: 38px;
    object-fit: contain;
    border-radius: 12px;
}
.main-nav {
    display: none;
    position: absolute;
    left: 18px;
    right: 18px;
    top: 72px;
    padding: 14px;
    background: #ffffff;
    border: 1px solid var(--line);
    border-radius: 18px;
    box-shadow: var(--shadow);
}
.main-nav.is-open {
    display: grid;
    gap: 8px;
}
.main-nav a {
    padding: 10px 12px;
    color: #41546d;
    border-radius: 12px;
    font-size: 14px;
}
.main-nav a:hover {
    background: var(--primary-soft);
    color: var(--primary-dark);
}
.nav-toggle {
    border: 1px solid var(--line);
    background: #fff;
    color: #263a52;
    border-radius: 999px;
    padding: 8px 14px;
    font-weight: 700;
}
.section {
    padding: 64px 0;
}
.centered-hero {
    padding: 86px 0 36px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.centered-hero:before {
    content: "";
    position: absolute;
    width: 780px;
    height: 780px;
    left: 50%;
    top: -340px;
    transform: translateX(-50%);
    background: radial-gradient(circle, rgba(70,139,223,.20), rgba(70,139,223,0) 62%);
    pointer-events: none;
}
.hero-content {
    position: relative;
    width: min(900px, 100%);
    margin: 0 auto;
}
.kicker, .badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 12px;
    border-radius: 999px;
    background: rgba(70,139,223,.10);
    color: var(--primary-dark);
    font-size: 13px;
    font-weight: 700;
}
h1, h2, h3 {
    margin: 0;
    line-height: 1.22;
    letter-spacing: -0.035em;
}
h1 {
    margin-top: 18px;
    font-size: clamp(34px, 7vw, 70px);
}
h2 {
    font-size: clamp(26px, 4vw, 42px);
}
h3 {
    font-size: 20px;
}
p {
    margin: 0;
    color: var(--muted);
}
.hero-lead {
    margin: 18px auto 26px;
    max-width: 720px;
    font-size: 17px;
}
.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 13px 24px;
    border-radius: 999px;
    background: var(--primary);
    color: #fff;
    font-weight: 800;
    box-shadow: 0 12px 26px rgba(70,139,223,.28);
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.download-btn:hover {
    transform: translateY(-2px);
    background: var(--primary-dark);
    box-shadow: 0 16px 32px rgba(70,139,223,.34);
}
.hero-tags {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
}
.hero-tags span, .mini-tag {
    padding: 8px 12px;
    border-radius: 999px;
    color: #38506b;
    background: #fff;
    border: 1px solid var(--line);
    font-size: 13px;
}
.product-bento {
    display: grid;
    gap: 16px;
    margin-top: 30px;
}
.product-card, .bento-card, .category-card, .scenario-card, .faq-item, .doc-card, .security-panel, .notice-card {
    background: var(--panel);
    border: 1px solid rgba(219,232,247,.95);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}
.product-card {
    position: relative;
    min-height: 430px;
    padding: 28px;
    overflow: hidden;
    display: grid;
    place-items: center;
    background: linear-gradient(140deg, rgba(255,255,255,.95), rgba(235,246,255,.95));
}
.product-card:after {
    content: "";
    position: absolute;
    inset: 60% -20% -35% -20%;
    background: radial-gradient(circle, rgba(70,139,223,.20), rgba(70,139,223,0) 64%);
}
.product-card img {
    width: min(320px, 82%);
    position: relative;
    z-index: 2;
    filter: drop-shadow(0 22px 34px rgba(30, 77, 130, .18));
}
.status-stack {
    display: grid;
    gap: 14px;
}
.status-card {
    padding: 18px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 20px;
}
.status-card strong {
    display: block;
    color: #13263c;
    margin-bottom: 6px;
}
.section-heading {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 26px;
}
.section-heading p {
    max-width: 620px;
}
.capability-grid, .risk-grid, .scenario-grid, .faq-grid {
    display: grid;
    gap: 16px;
}
.capability-grid {
    grid-template-columns: 1fr;
}
.capability {
    padding: 22px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 22px;
}
.capability span, .step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 12px;
    background: var(--primary-soft);
    color: var(--primary-dark);
    font-weight: 900;
    margin-bottom: 14px;
}
.roadmap {
    position: relative;
    display: grid;
    gap: 16px;
}
.roadmap:before {
    content: "";
    position: absolute;
    left: 17px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: linear-gradient(var(--primary), rgba(70,139,223,0));
}
.roadmap-step {
    position: relative;
    display: grid;
    grid-template-columns: 42px 1fr;
    gap: 14px;
}
.roadmap-step article {
    padding: 20px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 20px;
}
.text-link {
    display: inline-flex;
    margin-top: 12px;
    color: var(--primary-dark);
    font-weight: 800;
}
.category-bento, .bento-grid {
    display: grid;
    gap: 16px;
}
.category-card, .bento-card, .scenario-card, .doc-card, .notice-card {
    padding: 22px;
}
.category-card.big, .bento-card.large {
    background: linear-gradient(135deg, #ffffff, #eef7ff);
}
.bento-card.small {
    min-height: 164px;
}
.security-layout {
    display: grid;
    gap: 20px;
    align-items: stretch;
}
.security-panel {
    padding: 24px;
    background: linear-gradient(135deg, #fff, #f0f8ff);
}
.principle-list {
    display: grid;
    gap: 12px;
    margin-top: 18px;
}
.principle-list li, .check-list li {
    list-style: none;
    position: relative;
    padding: 12px 14px 12px 38px;
    border-radius: 16px;
    background: #fff;
    border: 1px solid var(--line);
    color: #42556e;
}
.principle-list li:before, .check-list li:before {
    content: "✓";
    position: absolute;
    left: 14px;
    color: var(--primary-dark);
    font-weight: 900;
}
ul.check-list, ul.principle-list {
    padding: 0;
    margin: 16px 0 0;
}
.scenario-card, .faq-item {
    background: #fff;
}
.faq-item {
    padding: 20px;
}
.faq-item h3 {
    margin-bottom: 8px;
}
.cta-section {
    padding: 62px 0 80px;
}
.cta-box {
    text-align: center;
    padding: 42px 22px;
    border-radius: 28px;
    background: linear-gradient(135deg, rgba(70,139,223,.12), rgba(255,255,255,.96));
    border: 1px solid var(--line);
}
.cta-box p {
    margin: 12px auto 22px;
    max-width: 680px;
}
.site-footer {
    padding: 42px 0;
    border-top: 1px solid var(--line);
    background: #fff;
}
.footer-inner {
    display: grid;
    gap: 24px;
}
.footer-brand img {
    width: 34px;
    height: 34px;
    border-radius: 10px;
}
.footer-links {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}
.footer-links a {
    padding: 8px 12px;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: #52657e;
    font-size: 14px;
}
.page-hero {
    padding: 66px 0 24px;
}
.page-title-card {
    padding: 30px;
    border-radius: 28px;
    background: linear-gradient(135deg, #fff, #eef7ff);
    border: 1px solid var(--line);
}
.page-title-card h1 {
    font-size: clamp(32px, 5vw, 54px);
}
.page-title-card p {
    margin-top: 14px;
    max-width: 760px;
}
.doc-layout {
    display: grid;
    gap: 20px;
    padding: 30px 0 72px;
}
.doc-main {
    display: grid;
    gap: 18px;
}
.doc-main > p, .doc-card p, .notice-card p {
    font-size: 16px;
}
.side-panel {
    display: grid;
    gap: 14px;
    align-content: start;
}
.notice-card {
    background: #f4faff;
    border-left: 4px solid var(--primary);
}
.steps-list {
    display: grid;
    gap: 14px;
}
.step-card {
    padding: 18px;
    display: grid;
    grid-template-columns: 42px 1fr;
    gap: 14px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 20px;
}
.download-panel {
    display: grid;
    place-items: start;
    gap: 12px;
    padding: 24px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 24px;
}
.download-page .download-panel {
    place-items: center;
    text-align: center;
}
.about-grid {
    display: grid;
    gap: 16px;
}
@media (min-width: 700px) {
    .capability-grid, .scenario-grid, .faq-grid, .about-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .category-bento, .bento-grid, .risk-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .product-bento {
        grid-template-columns: 1.4fr .9fr;
        align-items: stretch;
    }
}
@media (min-width: 980px) {
    .nav-toggle {
        display: none;
    }
    .main-nav {
        display: flex;
        position: static;
        padding: 0;
        background: transparent;
        border: none;
        box-shadow: none;
        border-radius: 0;
        gap: 4px;
        align-items: center;
    }
    .section {
        padding: 84px 0;
    }
    .product-card {
        min-height: 560px;
    }
    .status-stack {
        grid-template-rows: repeat(4, 1fr);
    }
    .capability-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
    .roadmap {
        grid-template-columns: repeat(6, minmax(0, 1fr));
        align-items: start;
    }
    .roadmap:before {
        left: 0;
        right: 0;
        top: 18px;
        bottom: auto;
        width: auto;
        height: 2px;
    }
    .roadmap-step {
        grid-template-columns: 1fr;
    }
    .roadmap-step article {
        margin-top: 10px;
        min-height: 210px;
    }
    .roadmap-step:nth-child(even) article {
        margin-top: 48px;
    }
    .category-bento, .bento-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
        grid-auto-flow: dense;
    }
    .category-card.big, .bento-card.large {
        grid-column: span 2;
        min-height: 230px;
    }
    .category-card, .bento-card {
        min-height: 190px;
    }
    .security-layout {
        grid-template-columns: 1.05fr .95fr;
    }
    .scenario-grid, .risk-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
    .doc-layout {
        grid-template-columns: minmax(0, 1fr) 320px;
        align-items: start;
    }
    .doc-main {
        max-width: 760px;
    }
    .side-panel {
        position: sticky;
        top: 96px;
    }
    .footer-inner {
        grid-template-columns: 1fr auto;
        align-items: center;
    }
}
@media (max-width: 430px) {
    .header-inner, .container, .footer-inner {
        width: min(100% - 28px, 1140px);
    }
    .centered-hero {
        padding-top: 62px;
    }
    .download-btn {
        width: 100%;
    }
    .product-card, .page-title-card, .cta-box {
        border-radius: 22px;
    }
}