:root {
    color-scheme: light;
    --ink: #172a26;
    --muted: #65716c;
    --paper: #f6f7f3;
    --white: #fff;
    --green: #173c36;
    --green-deep: #102d29;
    --mint: #c9d7c7;
    --gold: #d6a66c;
    --line: #dfe5de;
    --container: 1160px;
}
* {
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
}
body.xisen-home {
    margin: 0;
    color: var(--ink);
    background: var(--paper);
    font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}
.xisen-home a {
    color: inherit;
    text-decoration: none;
}
.xisen-home a:focus-visible {
    outline: 3px solid var(--gold);
    outline-offset: 4px;
}
.container {
    width: min(var(--container), calc(100% - 48px));
    margin-inline: auto;
}
.skip-link {
    position: absolute;
    z-index: 10;
    top: 8px;
    left: 8px;
    padding: 8px 12px;
    color: var(--white) !important;
    background: var(--green-deep);
    transform: translateY(-150%);
}
.skip-link:focus {
    transform: translateY(0);
}
.site-header {
    position: relative;
    z-index: 2;
    background: var(--paper);
}
.header-inner {
    min-height: 88px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
    border-bottom: 1px solid var(--line);
}
.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    flex: 0 0 auto;
}
.brand-mark {
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    color: var(--white);
    background: var(--green);
    font-size: 20px;
    font-weight: 700;
}
.brand-copy {
    display: grid;
    line-height: 1.25;
}
.brand-copy strong {
    font-size: 16px;
    letter-spacing: .08em;
}
.brand-copy small {
    margin-top: 5px;
    color: var(--muted);
    font-size: 9px;
    letter-spacing: .12em;
}
.main-nav {
    display: flex;
    align-items: center;
    gap: clamp(20px, 3vw, 42px);
    color: #43514b;
    font-size: 14px;
}
.main-nav a {
    transition: color .2s ease;
}
.main-nav a:hover {
    color: #9b6732;
}
.main-nav .nav-cta {
    padding: 11px 16px;
    color: var(--white);
    background: var(--green);
}
.nav-cta span {
    margin-left: 8px;
}
.hero {
    position: relative;
    overflow: hidden;
    padding: clamp(64px, 8vw, 110px) 0 clamp(72px, 9vw, 124px);
    color: var(--white);
    background:
        radial-gradient(ellipse at 78% 18%, rgba(153, 179, 151, .2), transparent 33%),
        linear-gradient(118deg, var(--green-deep), var(--green) 70%, #264e43);
}
.hero-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(330px, .75fr);
    align-items: center;
    gap: clamp(48px, 9vw, 132px);
}
.hero-copy {
    max-width: 640px;
}
.eyebrow,
.section-kicker,
.panel-topline,
.service-index {
    font-size: 11px;
    letter-spacing: .16em;
}
.eyebrow {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 0 0 25px;
    color: #d4dece;
}
.eyebrow-line {
    width: 32px;
    height: 1px;
    background: var(--gold);
}
.hero h1 {
    margin: 0;
    font-size: clamp(42px, 6.1vw, 76px);
    font-weight: 600;
    letter-spacing: -.055em;
    line-height: 1.2;
}
.hero h1 span {
    color: #d5dfd1;
}
.hero-lead {
    max-width: 570px;
    margin: 25px 0 0;
    color: #d3ddd6;
    font-size: clamp(15px, 1.5vw, 18px);
    line-height: 1.9;
}
.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 32px;
}
.button {
    min-height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 18px;
    padding: 0 20px;
    font-size: 14px;
    font-weight: 600;
    transition: transform .2s ease, background-color .2s ease;
}
.button:hover {
    transform: translateY(-2px);
}
.button-light {
    color: var(--green-deep) !important;
    background: #e7eadf;
}
.button-light:hover {
    background: var(--white);
}
.button-outline {
    color: var(--white) !important;
    border: 1px solid rgba(255, 255, 255, .38);
}
.hero-caption {
    margin: 40px 0 0;
    color: #c0cec5;
    font-size: 12px;
    letter-spacing: .06em;
}
.hero-caption span {
    padding-inline: 7px;
    color: var(--gold);
}
.scope-panel {
    position: relative;
    padding: clamp(26px, 4vw, 42px);
    border: 1px solid rgba(233, 239, 230, .3);
    background: rgba(12, 34, 30, .32);
    box-shadow: 24px 24px 0 rgba(211, 224, 204, .08);
}
.panel-topline {
    display: flex;
    justify-content: space-between;
    color: #c0cec5;
    font-size: 10px;
}
.panel-heading {
    margin: 26px 0 24px;
    font-size: clamp(23px, 3vw, 32px);
    font-weight: 500;
    line-height: 1.45;
}
.scope-list {
    margin: 0;
    padding: 0;
    list-style: none;
}
.scope-list li {
    min-height: 58px;
    display: grid;
    grid-template-columns: 34px minmax(80px, 1fr) auto;
    align-items: center;
    gap: 12px;
    border-top: 1px solid rgba(233, 239, 230, .2);
}
.scope-number,
.scope-en {
    color: #b9c9be;
    font-size: 10px;
    letter-spacing: .08em;
}
.scope-name {
    font-size: 15px;
}
.panel-foot {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 20px;
    color: #c0cec5;
    font-size: 12px;
}
.panel-symbol {
    width: 28px;
    height: 28px;
    display: grid;
    place-items: center;
    color: var(--green-deep);
    background: var(--gold);
    font-size: 20px;
}
.hero-orbit {
    position: absolute;
    width: 360px;
    aspect-ratio: 1;
    border: 1px solid rgba(225, 235, 222, .08);
    border-radius: 50%;
    pointer-events: none;
}
.hero-orbit-one {
    top: -250px;
    right: -140px;
}
.hero-orbit-two {
    top: -180px;
    right: -70px;
}
.section {
    padding: clamp(72px, 9vw, 118px) 0;
}
.section-kicker {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 28px;
    color: #78857d;
}
.section-kicker span:first-child {
    color: #9b6732;
}
.about-grid {
    display: grid;
    grid-template-columns: minmax(0, .9fr) minmax(0, 1fr);
    gap: clamp(36px, 8vw, 112px);
}
.section-label {
    margin: 0 0 14px;
    color: #947046;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .12em;
}
.about-grid h2,
.services-heading h2,
.contact-grid h2,
.contact-band h2 {
    margin: 0;
    font-size: clamp(29px, 4vw, 46px);
    font-weight: 600;
    letter-spacing: -.04em;
    line-height: 1.45;
}
.about-copy {
    padding-top: 5px;
    color: #536159;
    font-size: 15px;
}
.about-copy p {
    margin: 0 0 17px;
}
.values {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 27px;
}
.values span {
    padding: 7px 12px;
    color: var(--green);
    border: 1px solid #d5ded4;
    font-size: 12px;
}
.services-section {
    background: #ecefe8;
}
.services-heading {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 36px;
    margin-bottom: 36px;
}
.services-heading .section-kicker {
    margin-bottom: 22px;
}
.services-intro {
    max-width: 380px;
    margin: 0 0 5px;
    color: var(--muted);
    font-size: 14px;
}
.service-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}
.service-card {
    min-height: 260px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 23px;
    background: var(--white);
    border: 1px solid #e4e8e0;
}
.service-index {
    color: #78857d;
    font-size: 9px;
}
.service-mark {
    width: 48px;
    height: 48px;
    display: grid;
    place-items: center;
    margin-top: 24px;
    color: var(--green);
    background: #e8eee5;
    font-size: 18px;
    font-weight: 700;
}
.service-card h3 {
    margin: 19px 0 5px;
    font-size: 19px;
}
.service-card p {
    margin: 0;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.8;
}
.contact-band {
    padding: clamp(52px, 7vw, 84px) 0;
    color: var(--white);
    background: var(--green);
}
.contact-band-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
}
.contact-band .section-label {
    color: #d7bd96;
}
.contact-band h2 {
    font-size: clamp(27px, 3.8vw, 42px);
}
.contact-section {
    background: var(--paper);
}
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(40px, 8vw, 110px);
}
.contact-details {
    border-top: 1px solid var(--line);
}
.contact-item {
    display: grid;
    grid-template-columns: 130px 1fr;
    gap: 20px;
    padding: 20px 0;
    border-bottom: 1px solid var(--line);
}
.contact-label {
    color: var(--muted);
    font-size: 13px;
}
.contact-item p,
.contact-item a {
    margin: 0;
    color: var(--ink);
    font-size: 14px;
}
.contact-item a:hover {
    color: #9b6732;
}
.site-footer {
    padding: 24px 0;
    color: #d5ded7;
    background: var(--green-deep);
}
.footer-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 10px 24px;
}
.footer-inner p {
    margin: 0;
    font-size: 11px;
}
.footer-brand {
    font-size: 13px;
    font-weight: 600;
}
@media (max-width: 800px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 44px;
    }
    .scope-panel {
        max-width: 600px;
    }
    .service-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}
@media (max-width: 600px) {
    .container {
        width: min(100% - 36px, var(--container));
    }
    .header-inner {
        min-height: auto;
        align-items: flex-start;
        flex-direction: column;
        gap: 14px;
        padding-block: 16px;
    }
    .main-nav {
        width: 100%;
        flex-wrap: wrap;
        gap: 10px 20px;
        font-size: 13px;
    }
    .main-nav .nav-cta {
        margin-left: auto;
        padding: 8px 11px;
    }
    .hero {
        padding: 62px 0 76px;
    }
    .hero h1 {
        font-size: clamp(40px, 12vw, 58px);
    }
    .hero-lead {
        font-size: 15px;
    }
    .hero-caption {
        margin-top: 30px;
        line-height: 2;
    }
    .scope-panel {
        padding: 24px 20px;
        box-shadow: 12px 12px 0 rgba(211, 224, 204, .08);
    }
    .scope-en {
        font-size: 8px;
    }
    .section {
        padding: 68px 0;
    }
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    .services-heading,
    .contact-band-inner {
        align-items: flex-start;
        flex-direction: column;
    }
    .services-heading {
        gap: 16px;
    }
    .service-grid {
        gap: 10px;
    }
    .service-card {
        min-height: 238px;
        padding: 17px;
    }
    .service-card h3 {
        font-size: 17px;
    }
    .service-card p {
        font-size: 12px;
    }
    .contact-item {
        grid-template-columns: 96px 1fr;
        gap: 12px;
    }
    .footer-inner {
        align-items: flex-start;
        flex-direction: column;
        gap: 7px;
    }
}
@media (max-width: 360px) {
    .main-nav {
        gap: 9px 14px;
    }
    .main-nav .nav-cta {
        margin-left: 0;
    }
    .service-grid {
        grid-template-columns: 1fr;
    }
    .service-card {
        min-height: 210px;
    }
}
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    *,
    *::before,
    *::after {
        transition-duration: .01ms !important;
    }
}