:root {
    --ink: #07233b;
    --blue: #073e6d;
    --blue-2: #0b5e93;
    --teal: #00a99d;
    --cyan: #43c7e8;
    --mint: #e6f7f4;
    --ice: #f5fbff;
    --line: #d7e6ee;
    --text: #31485b;
    --muted: #6a7f8f;
    --white: #ffffff;
    --shadow: 0 24px 70px rgba(7, 35, 59, 0.12);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--text);
    background: var(--white);
    font-family: "Roboto", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.65;
}

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

.container {
    width: min(1160px, calc(100% - 40px));
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.95);
    border-bottom: 1px solid rgba(215, 230, 238, 0.9);
    backdrop-filter: blur(16px);
}

.nav-wrap {
    min-height: 92px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 22px;
}

.brand img {
    display: block;
    width: 214px;
    max-height: 78px;
    object-fit: contain;
    height: auto;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 20px;
    color: var(--ink);
    font-size: 14px;
    font-weight: 700;
}

.main-nav a {
    position: relative;
    padding: 8px 0;
}

.main-nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background: var(--teal);
    transition: width 0.2s ease;
}

.main-nav a:hover::after {
    width: 100%;
}

.lang-switch {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 14px;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--blue);
    background: var(--ice);
}

.menu-toggle {
    display: none;
    border: 1px solid var(--line);
    background: var(--white);
    color: var(--blue);
    border-radius: 999px;
    padding: 9px 14px;
    font: inherit;
    font-weight: 700;
}

.hero {
    position: relative;
    overflow: hidden;
    min-height: 680px;
    display: grid;
    align-items: center;
    background:
        radial-gradient(circle at 78% 28%, rgba(67, 199, 232, 0.25), transparent 23%),
        linear-gradient(115deg, #ffffff 0%, #eef8fb 50%, #d9f2f0 100%);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 56px;
    align-items: center;
    padding: 88px 0;
}

.eyebrow {
    margin: 0 0 18px;
    color: var(--teal);
    font-size: 14px;
    font-weight: 800;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

h1,
h2,
h3 {
    color: var(--ink);
    line-height: 1.08;
}

h1 {
    margin: 0 0 24px;
    font-size: clamp(48px, 6.2vw, 82px);
    font-weight: 800;
    letter-spacing: -0.045em;
}

.hero-lede {
    max-width: 650px;
    margin: 0 0 34px;
    color: #36556b;
    font-size: clamp(18px, 2vw, 23px);
}

.hero-actions,
.cta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 13px 22px;
    border-radius: 999px;
    border: 1px solid var(--blue);
    font-weight: 800;
}

.button.primary {
    color: var(--white);
    background: var(--blue);
}

.button.primary:hover {
    background: var(--blue-2);
}

.button.secondary {
    color: var(--blue);
    background: rgba(255, 255, 255, 0.7);
}

.science-visual {
    position: relative;
    min-height: 450px;
}

.orb {
    position: absolute;
    border-radius: 999px;
    background: linear-gradient(135deg, rgba(255,255,255,.95), rgba(222,244,247,.75));
    border: 1px solid rgba(7, 62, 109, 0.12);
    box-shadow: var(--shadow);
}

.orb.one {
    width: 360px;
    height: 360px;
    right: 10%;
    top: 38px;
}

.orb.two {
    width: 190px;
    height: 190px;
    left: 12%;
    bottom: 34px;
}

.orb.three {
    width: 120px;
    height: 120px;
    right: 0;
    bottom: 22px;
}

.molecule {
    position: absolute;
    inset: 0;
}

.node {
    position: absolute;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--teal);
    box-shadow: 0 0 0 10px rgba(0,169,157,.12);
}

.node.n1 { left: 32%; top: 35%; }
.node.n2 { left: 53%; top: 24%; background: var(--cyan); }
.node.n3 { left: 64%; top: 48%; }
.node.n4 { left: 45%; top: 66%; background: var(--blue-2); }

.bond {
    position: absolute;
    height: 2px;
    background: rgba(7, 62, 109, 0.18);
    transform-origin: left center;
}

.bond.b1 { left: 35%; top: 38%; width: 120px; transform: rotate(-25deg); }
.bond.b2 { left: 55%; top: 29%; width: 140px; transform: rotate(55deg); }
.bond.b3 { left: 48%; top: 63%; width: 130px; transform: rotate(-35deg); }

.floating-card {
    position: absolute;
    right: 6%;
    bottom: 72px;
    width: min(340px, 82%);
    padding: 26px;
    border-radius: 26px;
    color: var(--white);
    background: linear-gradient(135deg, var(--blue), var(--teal));
    box-shadow: var(--shadow);
}

.floating-card strong {
    display: block;
    font-size: 36px;
    line-height: 1;
}

section {
    padding: 92px 0;
}

.section-head {
    max-width: 760px;
    margin-bottom: 42px;
}

.section-head.center {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.section-head h2 {
    margin: 0 0 16px;
    font-size: clamp(34px, 4vw, 56px);
    font-weight: 800;
    letter-spacing: -0.035em;
}

.section-head p {
    margin: 0;
    color: var(--muted);
    font-size: 18px;
}

.stats {
    background: var(--ink);
    color: var(--white);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    overflow: hidden;
    border-radius: 26px;
    background: rgba(255,255,255,.16);
}

.stat {
    padding: 34px 26px;
    background: rgba(255,255,255,.06);
}

.stat strong {
    display: block;
    color: var(--cyan);
    font-size: 42px;
    line-height: 1;
}

.stat span {
    display: block;
    margin-top: 12px;
    color: #d7e6ee;
}

.featured-product {
    padding: 76px 0;
    background:
        radial-gradient(circle at 88% 16%, rgba(67, 199, 232, 0.18), transparent 24%),
        linear-gradient(135deg, #06182e 0%, #073e6d 52%, #0b6f89 100%);
    color: var(--white);
}

.featured-product-card {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 42px;
    align-items: center;
    padding: 44px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 34px;
    background: rgba(255, 255, 255, 0.08);
    box-shadow: var(--shadow);
}

.featured-product h2,
.featured-product h3 {
    color: var(--white);
}

.featured-product h2 {
    margin: 0 0 18px;
    font-size: clamp(34px, 4vw, 58px);
    letter-spacing: -0.035em;
}

.featured-product p {
    color: #d7e6ee;
    font-size: 18px;
}

.featured-product .eyebrow {
    color: var(--cyan);
}

.featured-product-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 28px;
}

.featured-product .button.primary {
    border-color: var(--cyan);
    color: var(--ink);
    background: var(--cyan);
}

.featured-product .button.secondary {
    border-color: rgba(255, 255, 255, 0.48);
    color: var(--white);
    background: rgba(255, 255, 255, 0.08);
}

.intelligence-panel {
    display: grid;
    gap: 14px;
}

.intelligence-panel .feature-list li {
    border-color: rgba(255, 255, 255, 0.16);
    color: var(--white);
    background: rgba(255, 255, 255, 0.09);
}

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

.card {
    position: relative;
    min-height: 260px;
    padding: 34px;
    border: 1px solid var(--line);
    border-radius: 28px;
    background: var(--white);
    box-shadow: 0 12px 38px rgba(7, 35, 59, 0.06);
}

.card::before {
    content: "";
    display: block;
    width: 48px;
    height: 4px;
    margin-bottom: 24px;
    border-radius: 999px;
    background: var(--teal);
}

.card h3 {
    margin: 0 0 14px;
    font-size: 24px;
}

.card p {
    margin: 0;
    color: var(--muted);
}

.pale {
    background: var(--ice);
}

.split {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 48px;
    align-items: start;
}

.timeline {
    display: grid;
    gap: 18px;
}

.step {
    display: grid;
    grid-template-columns: 54px 1fr;
    gap: 18px;
    padding: 22px;
    border: 1px solid var(--line);
    border-radius: 22px;
    background: var(--white);
}

.step b {
    display: grid;
    place-items: center;
    width: 54px;
    height: 54px;
    color: var(--white);
    background: var(--blue);
    border-radius: 50%;
}

.step h3 {
    margin: 0 0 6px;
    font-size: 21px;
}

.step p {
    margin: 0;
    color: var(--muted);
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.case-card {
    padding: 30px;
    border-radius: 28px;
    color: var(--white);
    background: linear-gradient(135deg, var(--ink), #0f4774);
}

.case-card:nth-child(even) {
    background: linear-gradient(135deg, #083d4d, #00a99d);
}

.case-card .tag {
    display: inline-block;
    margin-bottom: 18px;
    padding: 7px 12px;
    color: var(--ink);
    background: var(--cyan);
    border-radius: 999px;
    font-size: 12px;
    font-weight: 900;
    letter-spacing: .08em;
}

.case-card h3 {
    margin: 0 0 12px;
    color: var(--white);
}

.case-card p {
    margin: 0;
    color: #d7e6ee;
}

.contact {
    color: var(--white);
    background:
        radial-gradient(circle at 80% 20%, rgba(0,169,157,.28), transparent 28%),
        linear-gradient(135deg, var(--ink), var(--blue));
}

.contact h2,
.contact h3 {
    color: var(--white);
}

.contact-box {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 32px;
    align-items: center;
    padding: 40px;
    border: 1px solid rgba(255,255,255,.18);
    border-radius: 30px;
    background: rgba(255,255,255,.08);
}

.qr {
    width: 126px;
    height: 126px;
    border-radius: 18px;
    background: var(--white);
    padding: 8px;
}

.footer {
    padding: 34px 0;
    color: #d7e6ee;
    background: #06182e;
}

.footer a {
    color: #9fc7ea;
}

.filings {
    display: inline-flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 0;
    color: #9fc7ea;
    font-size: 13px;
    line-height: 1.6;
}

.filings a + a::before {
    content: "\00a0\00a0";
}

.footer-row {
    display: flex;
    justify-content: space-between;
    gap: 24px;
    align-items: center;
}

.product-hero {
    min-height: calc(100vh - 160px);
    display: grid;
    align-items: center;
    background:
        radial-gradient(circle at 80% 18%, rgba(0, 169, 157, 0.18), transparent 26%),
        linear-gradient(115deg, #ffffff 0%, #eef8fb 52%, #d9f2f0 100%);
}

.product-grid {
    display: grid;
    grid-template-columns: 1fr 0.9fr;
    gap: 54px;
    align-items: center;
}

.product-panel {
    padding: 38px;
    border: 1px solid rgba(7, 62, 109, 0.12);
    border-radius: 30px;
    background: rgba(255, 255, 255, 0.78);
    box-shadow: var(--shadow);
    backdrop-filter: blur(12px);
}

.product-panel h2 {
    margin: 18px 0 14px;
    font-size: clamp(28px, 3vw, 42px);
}

.product-panel p {
    margin: 0 0 22px;
    color: var(--muted);
}

.status-pill {
    display: inline-flex;
    padding: 8px 14px;
    border-radius: 999px;
    color: var(--white);
    background: linear-gradient(135deg, var(--blue), var(--teal));
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.feature-list {
    display: grid;
    gap: 12px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.feature-list li {
    padding: 14px 16px;
    border: 1px solid var(--line);
    border-radius: 16px;
    color: var(--ink);
    background: var(--white);
    font-weight: 700;
}

.page-hero {
    position: relative;
    overflow: hidden;
    padding: 92px 0 78px;
    background:
        radial-gradient(circle at 84% 12%, rgba(67, 199, 232, 0.22), transparent 24%),
        linear-gradient(115deg, #ffffff 0%, #eef8fb 52%, #d9f2f0 100%);
}

.page-hero h1 {
    max-width: 900px;
}

.page-hero p {
    max-width: 760px;
}

.page-lede {
    color: #36556b;
    font-size: clamp(18px, 2vw, 22px);
}

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

.info-card {
    padding: 30px;
    border: 1px solid var(--line);
    border-radius: 28px;
    background: var(--white);
    box-shadow: 0 12px 38px rgba(7, 35, 59, 0.06);
}

.info-card h3 {
    margin: 0 0 12px;
    font-size: 24px;
}

.info-card p,
.info-card li {
    color: var(--muted);
}

.info-card p {
    margin: 0;
}

.info-card ul {
    margin: 14px 0 0;
    padding-left: 20px;
}

.wide-card {
    grid-column: span 2;
}

.service-detail {
    display: grid;
    grid-template-columns: 0.78fr 1.22fr;
    gap: 34px;
    align-items: start;
    padding: 34px;
    border: 1px solid var(--line);
    border-radius: 30px;
    background: var(--white);
    box-shadow: 0 12px 38px rgba(7, 35, 59, 0.06);
}

.service-detail + .service-detail {
    margin-top: 24px;
}

.service-detail h2 {
    margin: 0 0 12px;
    font-size: clamp(30px, 3vw, 44px);
}

.service-detail p {
    margin: 0;
    color: var(--muted);
}

.pill-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
}

.pill-list span {
    padding: 8px 12px;
    border-radius: 999px;
    color: var(--blue);
    background: var(--ice);
    border: 1px solid var(--line);
    font-weight: 800;
    font-size: 13px;
}

.check-list {
    display: grid;
    gap: 12px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.check-list li {
    position: relative;
    padding: 14px 16px 14px 42px;
    border-radius: 16px;
    background: var(--ice);
    color: var(--ink);
    font-weight: 700;
}

.check-list li::before {
    content: "";
    position: absolute;
    left: 16px;
    top: 20px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--teal);
}

.event-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.event-card {
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 30px;
    background: var(--white);
    box-shadow: 0 12px 38px rgba(7, 35, 59, 0.06);
}

.event-card img {
    display: block;
    width: 100%;
    height: 300px;
    object-fit: cover;
    background: var(--ice);
}

.event-content {
    padding: 28px;
}

.event-content h3 {
    margin: 0 0 12px;
    font-size: 24px;
}

.event-meta {
    margin: 0 0 14px;
    color: var(--teal);
    font-weight: 900;
}

.legal-content {
    max-width: 900px;
    padding: 42px;
    border: 1px solid var(--line);
    border-radius: 30px;
    background: var(--white);
    box-shadow: 0 12px 38px rgba(7, 35, 59, 0.06);
}

.legal-content h2 {
    margin-top: 0;
    font-size: 28px;
}

.legal-content h2:not(:first-child) {
    margin-top: 34px;
}

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

.contact-method-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.contact-method-card {
    padding: 34px;
    border-radius: 30px;
    color: var(--white);
    background: linear-gradient(135deg, var(--ink), var(--blue));
}

.contact-method-card:nth-child(even) {
    background: linear-gradient(135deg, #083d4d, var(--teal));
}

.contact-method-card h3 {
    margin: 0 0 12px;
    color: var(--white);
}

.contact-method-card p {
    color: #d7e6ee;
}

@media (max-width: 920px) {
    .menu-toggle {
        display: inline-flex;
    }

    .main-nav {
        display: none;
        position: absolute;
        left: 0;
        right: 0;
        top: 92px;
        padding: 18px 20px 24px;
        background: var(--white);
        border-bottom: 1px solid var(--line);
        flex-direction: column;
        align-items: flex-start;
    }

    .site-header.nav-open .main-nav {
        display: flex;
    }

    .hero-grid,
    .split,
    .contact-box,
    .product-grid,
    .featured-product-card {
        grid-template-columns: 1fr;
    }

    .science-visual {
        min-height: 360px;
    }

    .stats-grid,
    .cards-grid,
    .case-grid,
    .info-grid,
    .event-grid,
    .service-detail,
    .contact-method-grid {
        grid-template-columns: 1fr;
    }

    .wide-card {
        grid-column: auto;
    }

    section {
        padding: 64px 0;
    }
}

@media (max-width: 560px) {
    .container {
        width: min(100% - 28px, 1160px);
    }

    .brand img {
        width: 166px;
        max-height: 62px;
    }

    .nav-wrap {
        min-height: 76px;
    }

    .main-nav {
        top: 76px;
    }

    .hero {
        min-height: auto;
    }

    .hero-grid {
        padding: 58px 0;
    }

    .card,
    .info-card,
    .case-card,
    .contact-box,
    .product-panel,
    .featured-product-card,
    .service-detail,
    .legal-content,
    .contact-method-card {
        padding: 24px;
    }

    .event-card img {
        height: 220px;
    }

    .footer-row {
        align-items: flex-start;
        flex-direction: column;
    }
}