:root {
    --bg: #f3f6fb;
    --surface: #ffffff;
    --surface-soft: #f8fbff;
    --surface-deep: #0c2037;
    --surface-deep-2: #102a47;
    --line: rgba(14, 36, 61, 0.12);
    --line-strong: rgba(255, 255, 255, 0.16);
    --text: #1f2d3d;
    --muted: #617187;
    --muted-soft: #8b98ab;
    --heading: #10233a;
    --primary: #12385f;
    --primary-2: #1f4f7f;
    --accent: #c7a96b;
    --accent-2: #dfc38f;
    --shadow-lg: 0 24px 60px rgba(14, 32, 56, 0.14);
    --shadow-md: 0 14px 36px rgba(12, 30, 54, 0.1);
    --shadow-sm: 0 8px 22px rgba(12, 30, 54, 0.08);
    --radius-xl: 28px;
    --radius-lg: 20px;
    --radius-md: 14px;
    --container: min(1180px, calc(100vw - 48px));
    --nav-height: 88px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-width: 320px;
    font-family: "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top right, rgba(199, 169, 107, 0.15), transparent 28%),
        linear-gradient(180deg, #f8fbff 0%, #f3f6fb 22%, #ffffff 100%);
    line-height: 1.7;
}

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

button,
a {
    -webkit-tap-highlight-color: transparent;
}

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

button {
    font: inherit;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.container {
    width: var(--container);
    margin: 0 auto;
}

.section {
    position: relative;
    padding: 92px 0;
}

.section-light {
    background: linear-gradient(180deg, rgba(248, 251, 255, 0.85), rgba(255, 255, 255, 0.98));
}

.section-dark {
    position: relative;
    overflow: hidden;
    background:
        linear-gradient(135deg, rgba(11, 30, 53, 0.96), rgba(16, 42, 71, 0.94)),
        linear-gradient(180deg, #102843, #0a1b2c);
    color: #f8fbff;
}

.section-accent {
    background:
        linear-gradient(135deg, rgba(16, 42, 71, 0.98), rgba(19, 56, 95, 0.94)),
        linear-gradient(180deg, #102843, #173a60);
    color: #f7f9fc;
}

.section-heading {
    max-width: 760px;
    margin: 0 auto 46px;
    text-align: center;
}

.section-heading-left {
    margin-left: 0;
    text-align: left;
}

.section-heading h2 {
    margin: 12px 0 18px;
    font-family: "Source Han Serif SC", "Songti SC", "STSong", serif;
    font-size: clamp(2rem, 3vw, 3rem);
    line-height: 1.2;
    letter-spacing: 0.02em;
    color: var(--heading);
}

.section-accent .section-heading h2,
.section-dark .section-heading h2,
.contact-section .section-heading h2 {
    color: #f8fbff;
}

.section-heading p:last-child {
    margin: 0;
    color: var(--muted);
    font-size: 1.04rem;
}

.section-accent .section-heading p:last-child,
.contact-section .section-heading p:last-child {
    color: rgba(240, 245, 250, 0.82);
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin: 0;
    font-size: 0.78rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--accent);
}

.eyebrow::before,
.eyebrow::after {
    content: "";
    width: 26px;
    height: 1px;
    background: currentColor;
    opacity: 0.55;
}

.topbar {
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(7, 17, 29, 0.72);
    color: rgba(246, 249, 252, 0.76);
    font-size: 0.9rem;
}

.topbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    min-height: 42px;
}

.topbar a {
    color: #f6e1b4;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 30;
    backdrop-filter: blur(18px);
}

.navbar {
    background: rgba(255, 255, 255, 0.88);
    border-bottom: 1px solid rgba(16, 42, 71, 0.08);
}

.navbar.is-scrolled {
    box-shadow: 0 12px 28px rgba(12, 29, 53, 0.08);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    min-height: var(--nav-height);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    flex-shrink: 0;
}

.brand-logo-wrap {
    display: grid;
    place-items: center;
    width: 58px;
    height: 58px;
    border-radius: 14px;
    background: #ffffff;
    box-shadow: 0 8px 22px rgba(12, 30, 54, 0.1);
    overflow: hidden;
}

.brand-logo {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.brand-text {
    display: grid;
    gap: 3px;
}

.brand-text strong {
    font-size: 1.15rem;
    color: var(--heading);
    letter-spacing: 0.08em;
}

.brand-text small {
    font-size: 0.72rem;
    letter-spacing: 0.16em;
    color: var(--muted-soft);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 22px;
}

.nav-menu a {
    position: relative;
    padding: 8px 0;
    color: var(--muted);
    font-size: 0.98rem;
    transition: color 0.24s ease;
}

.nav-menu a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), #e6d2a5);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.24s ease;
}

.nav-menu a:hover,
.nav-menu a.is-active {
    color: var(--heading);
}

.nav-menu a:hover::after,
.nav-menu a.is-active::after {
    transform: scaleX(1);
}

.nav-menu .nav-cta {
    padding: 12px 18px;
    border: 1px solid rgba(18, 56, 95, 0.15);
    border-radius: 999px;
    background: rgba(18, 56, 95, 0.03);
    color: var(--primary);
}

.nav-menu .nav-cta::after {
    display: none;
}

.nav-toggle {
    display: none;
    width: 46px;
    height: 46px;
    padding: 0;
    border: 0;
    border-radius: 14px;
    background: rgba(18, 56, 95, 0.06);
    color: var(--heading);
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    margin: 4px auto;
    background: currentColor;
    transition: transform 0.24s ease, opacity 0.24s ease;
}

.nav-toggle.is-open span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

.nav-toggle.is-open span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.is-open span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

.hero {
    padding: 84px 0 98px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 20%, rgba(199, 169, 107, 0.16), transparent 25%),
        radial-gradient(circle at 84% 24%, rgba(223, 195, 143, 0.12), transparent 24%),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0));
    pointer-events: none;
}

.hero-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 1.12fr) minmax(320px, 0.88fr);
    gap: 38px;
    align-items: center;
}

.hero-copy h1 {
    margin: 16px 0 18px;
    font-family: "Source Han Serif SC", "Songti SC", "STSong", serif;
    font-size: clamp(2.6rem, 5vw, 4.7rem);
    line-height: 1.1;
    letter-spacing: 0.04em;
}

.hero-lead {
    max-width: 700px;
    margin: 0 0 30px;
    color: rgba(244, 247, 252, 0.84);
    font-size: 1.08rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 24px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 52px;
    padding: 0 24px;
    border-radius: 999px;
    font-weight: 600;
    transition: transform 0.24s ease, box-shadow 0.24s ease, background 0.24s ease;
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: #1e2731;
    box-shadow: 0 14px 30px rgba(199, 169, 107, 0.24);
}

.btn-secondary {
    border: 1px solid rgba(255, 255, 255, 0.18);
    background: rgba(255, 255, 255, 0.04);
    color: #f7f9fc;
}

.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.hero-tags span {
    padding: 8px 14px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.05);
    color: rgba(244, 247, 252, 0.8);
    font-size: 0.92rem;
}

.hero-panel {
    display: grid;
    gap: 18px;
}

.panel-card {
    padding: 28px;
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: var(--shadow-lg);
}

.panel-primary {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.03));
}

.panel-secondary {
    background: rgba(7, 18, 31, 0.56);
}

.panel-heading p,
.panel-title {
    margin: 0 0 8px;
    color: rgba(243, 247, 252, 0.68);
    font-size: 0.88rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.panel-heading strong {
    font-size: 1.45rem;
    font-weight: 600;
}

.panel-list {
    margin: 18px 0 0;
    padding: 0;
    list-style: none;
}

.panel-list li {
    position: relative;
    padding-left: 20px;
    color: rgba(244, 247, 252, 0.82);
}

.panel-list li + li {
    margin-top: 12px;
}

.panel-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 11px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), #eed9aa);
}

.metric-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.metric-grid div {
    padding: 16px;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.metric-grid strong {
    display: block;
    margin-bottom: 4px;
    color: #fff8eb;
    font-size: 1rem;
}

.metric-grid span {
    color: rgba(244, 247, 252, 0.72);
    font-size: 0.9rem;
}

.trust-strip {
    position: relative;
    z-index: 2;
    margin-top: -34px;
}

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

.trust-item {
    padding: 24px 22px;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.94);
    border: 1px solid rgba(16, 42, 71, 0.06);
    box-shadow: var(--shadow-md);
}

.trust-item strong {
    display: block;
    margin-bottom: 10px;
    color: var(--heading);
    font-size: 1.05rem;
}

.trust-item span {
    color: var(--muted);
    font-size: 0.95rem;
}

.about-grid,
.card-grid,
.scenario-grid,
.advantages-grid,
.case-grid {
    display: grid;
    gap: 22px;
}

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

.about-card,
.service-card,
.scenario-card,
.advantage-card,
.case-card,
.contact-card {
    background: rgba(255, 255, 255, 0.94);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.about-card {
    padding: 28px;
}

.about-card h3,
.service-card h3,
.scenario-card h3,
.advantage-card h3,
.process-card h3,
.case-card h3,
.faq-question {
    margin: 0 0 12px;
    color: var(--heading);
}

.about-card p,
.service-card p,
.scenario-card p,
.advantage-card p,
.process-card p,
.case-card p,
.contact-copy p,
.contact-item p {
    margin: 0;
    color: var(--muted);
}

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

.service-card {
    padding: 28px;
}

.service-card span {
    display: inline-flex;
    margin-top: 18px;
    padding-top: 18px;
    border-top: 1px solid rgba(16, 42, 71, 0.08);
    color: var(--primary-2);
    font-size: 0.92rem;
}

.icon-badge,
.mini-icon {
    display: grid;
    place-items: center;
    flex-shrink: 0;
    border-radius: 18px;
    background: linear-gradient(135deg, rgba(18, 56, 95, 0.1), rgba(31, 79, 127, 0.03));
    color: var(--primary);
}

.icon-badge {
    width: 60px;
    height: 60px;
    margin-bottom: 18px;
}

.icon-badge svg,
.mini-icon svg {
    width: 28px;
    height: 28px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}

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

.scenario-card {
    padding: 28px;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.97), rgba(248, 251, 255, 0.93));
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 18px;
}

.process-card {
    position: relative;
    padding: 28px 24px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-sm);
}

.process-card span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    margin-bottom: 16px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--primary), var(--primary-2));
    color: #f8fbff;
    font-weight: 700;
}

.advantages-layout {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 30px;
    align-items: start;
}

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

.advantage-card {
    padding: 26px;
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.12);
    box-shadow: none;
}

.advantage-card h3 {
    color: #fff8eb;
}

.advantage-card p {
    color: rgba(241, 245, 250, 0.76);
}

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

.case-card {
    padding: 28px;
}

.case-card span {
    display: inline-flex;
    margin-bottom: 14px;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(18, 56, 95, 0.06);
    color: var(--primary);
    font-size: 0.82rem;
    letter-spacing: 0.06em;
}

.case-card strong {
    display: block;
    margin-top: 18px;
    color: var(--heading);
    font-size: 0.98rem;
}

.faq-layout {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 28px;
    align-items: start;
}

.faq-list {
    display: grid;
    gap: 14px;
}

.faq-item {
    border-radius: var(--radius-lg);
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.96);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 22px 24px;
    border: 0;
    background: transparent;
    text-align: left;
    font-size: 1rem;
    cursor: pointer;
}

.faq-question span {
    position: relative;
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.faq-question span::before,
.faq-question span::after {
    content: "";
    position: absolute;
    inset: 8px 0;
    height: 2px;
    background: var(--primary);
    transition: transform 0.24s ease;
}

.faq-question span::after {
    transform: rotate(90deg);
}

.faq-item.is-open .faq-question span::after {
    transform: rotate(0deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.28s ease;
}

.faq-answer p {
    padding: 0 24px 22px;
    margin: 0;
    color: var(--muted);
}

.contact-section {
    background:
        radial-gradient(circle at top right, rgba(199, 169, 107, 0.16), transparent 22%),
        linear-gradient(135deg, rgba(12, 32, 55, 0.98), rgba(16, 42, 71, 0.95));
    color: #f7f9fc;
}

.contact-shell {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(340px, 0.92fr);
    gap: 30px;
    align-items: start;
}

.contact-copy h2 {
    color: #f7f9fc;
}

.contact-points {
    display: grid;
    gap: 18px;
    margin-top: 28px;
}

.contact-points strong {
    display: block;
    margin-bottom: 6px;
    color: #fff3d8;
}

.contact-points span {
    color: rgba(241, 245, 250, 0.76);
}

.contact-card {
    padding: 28px;
    background: rgba(255, 255, 255, 0.96);
}

.contact-list {
    display: grid;
    gap: 20px;
}

.contact-item {
    display: flex;
    gap: 16px;
}

.mini-icon {
    width: 48px;
    height: 48px;
}

.contact-item strong {
    display: block;
    margin-bottom: 6px;
    color: var(--heading);
}

.contact-item a {
    color: var(--primary);
    font-weight: 600;
}

.qr-card {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid rgba(16, 42, 71, 0.1);
}

.qr-box {
    display: grid;
    place-items: center;
    width: 176px;
    height: 176px;
    border: 1px dashed rgba(18, 56, 95, 0.28);
    border-radius: 20px;
    background:
        linear-gradient(135deg, rgba(18, 56, 95, 0.04), rgba(199, 169, 107, 0.09));
    color: var(--primary);
    text-align: center;
    font-weight: 600;
}

.qr-box-image {
    width: min(100%, 240px);
    height: auto;
    padding: 10px;
    border-style: solid;
    background: #ffffff;
}

.qr-image {
    width: 100%;
    height: auto;
    border-radius: 14px;
}

.qr-card p {
    margin: 14px 0 0;
    color: var(--muted);
}

.site-footer {
    padding: 34px 0 30px;
    background: #081522;
    color: rgba(241, 245, 250, 0.72);
}

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

.footer-brand .brand-logo-wrap {
    background: rgba(255, 255, 255, 0.96);
}

.footer-brand .brand-text strong,
.footer-brand .brand-text small {
    color: #f7f9fc;
}

.site-footer p {
    margin: 14px 0 0;
    max-width: 560px;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
}

.footer-links a {
    color: rgba(241, 245, 250, 0.8);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    margin-top: 26px;
    padding-top: 18px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 0.92rem;
}

.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.56s ease, transform 0.56s ease;
}

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

@media (max-width: 1120px) {
    .card-grid-services,
    .scenario-grid,
    .about-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

    .advantages-layout,
    .faq-layout,
    .contact-shell,
    .hero-grid {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 840px) {
    :root {
        --container: min(100vw - 32px, 1180px);
        --nav-height: 76px;
    }

    .topbar {
        display: none;
    }

    .nav-toggle {
        display: inline-block;
    }

    .nav-menu {
        position: absolute;
        top: calc(100% + 10px);
        left: 16px;
        right: 16px;
        display: grid;
        gap: 0;
        padding: 12px;
        border-radius: 22px;
        background: rgba(255, 255, 255, 0.97);
        border: 1px solid rgba(16, 42, 71, 0.08);
        box-shadow: var(--shadow-lg);
        opacity: 0;
        pointer-events: none;
        transform: translateY(-8px);
        transition: opacity 0.24s ease, transform 0.24s ease;
    }

    .nav-menu.is-open {
        opacity: 1;
        pointer-events: auto;
        transform: translateY(0);
    }

    .nav-menu a {
        padding: 14px 12px;
        border-radius: 14px;
    }

    .nav-menu .nav-cta {
        justify-content: center;
        margin-top: 8px;
    }

    .hero {
        padding: 68px 0 82px;
    }

    .section {
        padding: 76px 0;
    }

    .footer-layout,
    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 640px) {
    .card-grid-services,
    .scenario-grid,
    .about-grid,
    .case-grid,
    .advantages-grid,
    .process-grid,
    .trust-grid,
    .metric-grid {
        grid-template-columns: 1fr;
    }

    .hero-copy h1 {
        font-size: 2.2rem;
    }

    .hero-lead,
    .section-heading p:last-child {
        font-size: 0.98rem;
    }

    .hero-tags {
        gap: 8px;
    }

    .hero-tags span,
    .service-card span {
        width: 100%;
    }

    .panel-card,
    .about-card,
    .service-card,
    .scenario-card,
    .process-card,
    .advantage-card,
    .case-card,
    .contact-card {
        padding: 22px;
    }

    .faq-question {
        padding: 18px 20px;
    }

    .faq-answer p {
        padding: 0 20px 20px;
    }

    .qr-box {
        width: 150px;
        height: 150px;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    .reveal,
    .nav-menu,
    .faq-answer,
    .btn,
    .nav-menu a::after {
        transition: none;
    }
}