:root {
    --ink: #111111;
    --muted: #737373;
    --line: #e9e9e9;
    --paper: #ffffff;
    --soft: #f7f7f5;
    --accent: #e6ff43;
    --blue: #2458ff;
    --dark: #111111;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { color: var(--ink); background: var(--paper); font-family: Inter, "PingFang SC", "Microsoft YaHei", Arial, sans-serif; line-height: 1.55; }
img { max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.container { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }

.site-header { position: sticky; top: 0; z-index: 80; background: rgba(255,255,255,.94); border-bottom: 1px solid var(--line); backdrop-filter: blur(16px); }
.header-inner { min-height: 80px; display: flex; align-items: center; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 16px; font-weight: 800; white-space: nowrap; }
.brand img { width: 44px; height: 44px; display: block; border-radius: 12px; }
.main-nav { margin-left: auto; display: flex; align-items: center; gap: 28px; }
.main-nav a { color: #666; font-size: 13px; transition: color 160ms ease; }
.main-nav a:hover, .main-nav a:focus-visible { color: var(--ink); outline: none; }
.header-contact { min-height: 42px; padding: 0 17px; display: inline-flex; align-items: center; gap: 12px; border: 1px solid var(--ink); border-radius: 999px; font-size: 12px; font-weight: 800; }
.header-contact span, .button span, .text-link span { font-size: 16px; }
.menu-toggle { width: 42px; height: 42px; margin-left: auto; display: none; place-content: center; gap: 5px; border: 0; background: transparent; cursor: pointer; }
.menu-toggle span { width: 21px; height: 2px; background: var(--ink); }

.hero { overflow: hidden; background: var(--paper); }
.hero-grid { min-height: 680px; display: grid; grid-template-columns: minmax(0, .93fr) minmax(420px, 1.07fr); align-items: center; gap: 40px; padding: 72px 0 84px; }
.hero-copy { position: relative; z-index: 2; }
.kicker { display: flex; align-items: center; gap: 10px; color: #858585; font-size: 10px; font-weight: 850; letter-spacing: .16em; }
.kicker span { width: 28px; height: 1px; display: inline-block; background: currentColor; }
.hero h1 { max-width: 650px; margin: 22px 0 24px; font-size: clamp(48px, 6vw, 82px); line-height: 1.02; letter-spacing: -.045em; }
em { color: var(--blue); font-style: normal; }
.hero-lead { max-width: 470px; color: var(--muted); font-size: 16px; }
.hero-actions { margin-top: 34px; display: flex; align-items: center; gap: 25px; }
.button { min-height: 54px; padding: 0 23px; display: inline-flex; align-items: center; gap: 24px; border-radius: 999px; font-size: 13px; font-weight: 850; }
.button-primary { color: var(--ink); background: var(--accent); }
.button-dark { color: #fff; background: var(--dark); }
.text-link { display: inline-flex; align-items: center; gap: 12px; font-size: 13px; font-weight: 800; }
.text-link span { color: var(--blue); }
.hero-proof { margin-top: 78px; display: flex; align-items: center; gap: 10px; color: #8b8b8b; font-size: 10px; }
.hero-proof strong { color: var(--ink); font-size: 17px; }
.hero-proof i { width: 1px; height: 25px; margin: 0 10px; background: var(--line); }
.hero-visual { position: relative; min-height: 510px; }
.visual-image { position: absolute; inset: 42px 18px 18px 72px; overflow: hidden; border-radius: 38% 8% 8% 8%; transform: rotate(3deg); box-shadow: 24px 30px 0 var(--accent); }
.visual-image::after { content: ""; position: absolute; inset: 0; background: linear-gradient(140deg, rgba(36,88,255,.2), transparent 65%); }
.visual-image img { width: 100%; height: 100%; display: block; object-fit: cover; }
.visual-orbit { position: absolute; border: 1px solid #d9d9d9; border-radius: 50%; transform: rotate(-20deg); }
.orbit-one { width: 470px; height: 240px; top: 75px; left: 6px; }
.orbit-two { width: 390px; height: 175px; top: 142px; left: 47px; border-color: var(--blue); opacity: .4; }
.visual-card { position: absolute; z-index: 2; padding: 16px 18px; border: 1px solid rgba(0,0,0,.08); border-radius: 14px; background: rgba(255,255,255,.94); box-shadow: 0 16px 36px rgba(0,0,0,.11); }
.visual-card-top { top: 22px; right: 3px; display: grid; grid-template-columns: 9px 1fr; column-gap: 9px; font-size: 10px; }
.visual-card-top strong { grid-column: 2; margin-top: 5px; color: var(--blue); font-size: 12px; }
.status-dot { width: 9px; height: 9px; margin-top: 3px; border-radius: 50%; background: var(--accent); }
.visual-card-bottom { right: 30px; bottom: 0; width: 160px; }
.visual-card-bottom strong { display: block; font-size: 28px; line-height: 1; }
.visual-card-bottom span { display: block; margin-top: 5px; color: var(--muted); font-size: 10px; }
.progress { height: 4px; margin-top: 13px; overflow: hidden; background: #e9e9e9; }
.progress i { width: 98%; height: 100%; display: block; background: var(--blue); }

.logo-strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.logo-strip-inner { min-height: 94px; display: flex; align-items: center; justify-content: space-between; gap: 24px; color: #a1a1a1; }
.logo-strip-inner span { color: var(--ink); font-size: 10px; font-weight: 850; letter-spacing: .14em; }
.logo-strip-inner strong { font-size: 16px; letter-spacing: -.03em; }

.section { padding: 132px 0; }
.section-top { display: flex; align-items: flex-end; justify-content: space-between; gap: 50px; margin-bottom: 58px; }
.section-top h2 { margin-top: 18px; font-size: clamp(40px, 5vw, 66px); line-height: 1.02; letter-spacing: -.045em; }
.section-intro { max-width: 360px; color: var(--muted); font-size: 14px; }
.services { background: var(--soft); }
.service-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.service-grid-two { grid-template-columns: repeat(2, minmax(0, 1fr)); max-width: 820px; }
.service-card { min-height: 380px; padding: 30px; position: relative; display: flex; flex-direction: column; border: 1px solid #e9e9e9; border-radius: 20px; background: #fff; }
.service-card-featured { background: var(--accent); border-color: var(--accent); }
.card-number { position: absolute; top: 28px; right: 28px; color: #b0b0b0; font-size: 11px; }
.service-card-featured .card-number { color: #6c7300; }
.service-icon { width: 58px; height: 58px; margin-bottom: 48px; display: grid; place-items: center; border-radius: 17px; color: #fff; background: var(--blue); font-size: 13px; font-weight: 900; }
.service-card-featured .service-icon { color: var(--ink); background: #fff; }
.service-card h3 { font-size: 24px; line-height: 1.12; letter-spacing: -.03em; }
.service-card p { max-width: 285px; margin-top: 18px; color: var(--muted); font-size: 13px; }
.service-card a { margin-top: auto; padding-top: 30px; display: inline-flex; gap: 12px; font-size: 12px; font-weight: 850; }

.advantage { background: #fff; }
.advantage-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: center; gap: 100px; }
.advantage-media { position: relative; min-height: 570px; padding: 0 35px 35px 0; }
.advantage-media img { width: 100%; height: 100%; min-height: 535px; display: block; object-fit: cover; border-radius: 0 32px 0 32px; }
.advantage-media::after { content: ""; position: absolute; right: 0; bottom: 0; width: 150px; height: 150px; background: var(--accent); z-index: -1; }
.media-label { position: absolute; left: -18px; bottom: 82px; padding: 11px 15px; color: #fff; background: var(--blue); font-size: 9px; font-weight: 850; letter-spacing: .14em; transform: rotate(-90deg); transform-origin: left bottom; }
.advantage-copy h2 { margin: 18px 0 25px; font-size: clamp(40px, 5vw, 66px); line-height: 1.02; letter-spacing: -.045em; }
.advantage-copy > p:not(.kicker) { max-width: 470px; color: var(--muted); font-size: 14px; }
.metric-grid { max-width: 470px; margin-top: 48px; display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.metric-grid div { padding: 18px 10px 18px 0; }
.metric-grid strong { display: block; font-size: 25px; letter-spacing: -.04em; }
.metric-grid strong span { color: var(--blue); font-size: 13px; }
.metric-grid small { color: var(--muted); font-size: 10px; }

.process { background: var(--soft); }
.process-grid { display: grid; grid-template-columns: minmax(0, .95fr) minmax(380px, 1.05fr); gap: 105px; }
.process-copy h2 { margin: 18px 0 22px; font-size: clamp(40px, 5vw, 66px); line-height: 1.02; letter-spacing: -.045em; }
.process-copy > p:not(.kicker) { max-width: 410px; color: var(--muted); font-size: 14px; }
.process-copy img { width: 100%; aspect-ratio: 1.55; margin-top: 42px; display: block; object-fit: cover; border-radius: 0 28px 0 28px; }
.process-list { list-style: none; border-top: 1px solid #dcdcdc; }
.process-list li { min-height: 110px; padding: 25px 0; display: grid; grid-template-columns: 58px 1fr; gap: 20px; border-bottom: 1px solid #dcdcdc; }
.process-list b { color: var(--blue); font-size: 13px; }
.process-list h3 { font-size: 18px; }
.process-list p { margin-top: 5px; color: var(--muted); font-size: 13px; }

.cases { background: #fff; }
.case-grid { display: grid; grid-template-columns: 1.25fr .75fr; grid-template-rows: 260px 260px; gap: 16px; }
.case-card { position: relative; overflow: hidden; border-radius: 20px; background: #ddd; }
.case-card-large { grid-row: span 2; }
.case-card img { width: 100%; height: 100%; display: block; object-fit: cover; transition: transform 350ms ease; }
.case-card::after { content: ""; position: absolute; inset: 45% 0 0; background: linear-gradient(transparent, rgba(0,0,0,.72)); }
.case-card div { position: absolute; z-index: 1; left: 24px; bottom: 21px; color: #fff; }
.case-card small { display: block; margin-bottom: 6px; font-size: 9px; letter-spacing: .14em; }
.case-card strong { font-size: 22px; }
.case-card:hover img { transform: scale(1.05); }

.news { background: #fff; }
.news .section-intro { max-width: 380px; }
.gallery-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
.gallery-item { min-width: 0; overflow: hidden; display: grid; grid-template-columns: minmax(260px, 34%) minmax(0, 1fr); border: 1px solid var(--line); border-radius: 20px; background: #fff; color: inherit; text-align: left; cursor: pointer; transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease; }
.gallery-item:hover, .gallery-item:focus-within { transform: translateY(-4px); border-color: var(--blue); box-shadow: 0 18px 38px rgba(0,0,0,.1); outline: none; }
.product-media, .modal-product-media { display: grid; place-items: center; overflow: hidden; background: var(--soft); color: var(--muted); font-size: 12px; }
.product-media { min-height: 220px; }
.product-media img, .modal-product-media img { width: 100%; height: 100%; display: block; object-fit: cover; }
.item-description { min-width: 0; padding: 28px 30px; display: flex; flex-direction: column; }
.item-description strong { overflow: hidden; display: -webkit-box; margin-bottom: 12px; font-size: 22px; line-height: 1.3; letter-spacing: -.03em; overflow-wrap: anywhere; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
.item-description > span:not(.item-action) { overflow: hidden; display: -webkit-box; color: var(--muted); font-size: 14px; line-height: 1.7; overflow-wrap: anywhere; -webkit-box-orient: vertical; -webkit-line-clamp: 3; }
.item-description a, .modal-copy a { color: var(--blue); font-weight: 700; text-decoration: underline; text-underline-offset: 3px; overflow-wrap: anywhere; }
.item-description a:focus-visible, .modal-copy a:focus-visible, .item-action:focus-visible { border-radius: 3px; outline: 3px solid var(--blue); outline-offset: 3px; }
.item-action { align-self: flex-start; margin-top: auto; padding: 18px 0 0; display: inline-flex; align-items: center; gap: 8px; border: 0; background: transparent; color: var(--blue); font: inherit; font-size: 12px; font-weight: 850; cursor: pointer; }
.item-action::after { content: "→"; }
.loading, .error-state, .empty-state { padding: 48px 20px; border: 1px solid var(--line); border-radius: 20px; background: var(--soft); color: var(--muted); text-align: center; font-size: 14px; }
.error-state { color: #a1372e; }
.image-fallback { min-height: 220px; }

.modal[hidden] { display: none; }
.modal { position: fixed; inset: 0; z-index: 100; padding: 24px; display: grid; place-items: center; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(17,17,17,.68); }
.modal-panel { position: relative; width: min(760px, 100%); max-height: calc(100vh - 48px); overflow: auto; border-radius: 20px; background: #fff; box-shadow: 0 30px 80px rgba(0,0,0,.22); }
.modal-close { position: absolute; top: 14px; right: 14px; z-index: 2; width: 38px; height: 38px; border: 0; border-radius: 50%; color: #fff; background: var(--ink); font-size: 25px; line-height: 1; cursor: pointer; }
.modal-close:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.modal-product-media { aspect-ratio: 16 / 9; }
.modal-copy { padding: 28px 30px 34px; }
.modal-copy h2 { margin-bottom: 10px; font-size: 28px; letter-spacing: -.03em; }
.modal-copy p { color: var(--muted); font-size: 14px; overflow-wrap: anywhere; white-space: pre-wrap; }
/* Rich-text content in the detail modal (详情弹窗富文本内容) */
.modal-rich { color: var(--muted); font-size: 14px; line-height: 1.7; overflow-wrap: anywhere; }
.modal-rich > :first-child { margin-top: 0; }
.modal-rich > :last-child { margin-bottom: 0; }
.modal-rich p { margin: 0 0 14px; }
.modal-rich h1, .modal-rich h2, .modal-rich h3, .modal-rich h4, .modal-rich h5, .modal-rich h6 { margin: 22px 0 10px; color: var(--ink); line-height: 1.3; letter-spacing: -.02em; }
.modal-rich h1 { font-size: 24px; }
.modal-rich h2 { font-size: 21px; }
.modal-rich h3 { font-size: 18px; }
.modal-rich h4, .modal-rich h5, .modal-rich h6 { font-size: 16px; }
.modal-rich ul, .modal-rich ol { margin: 0 0 14px; padding-left: 22px; }
.modal-rich li { margin: 4px 0; }
.modal-rich blockquote { margin: 0 0 14px; padding: 8px 16px; border-left: 3px solid var(--blue); color: var(--ink); background: rgba(0,0,0,.03); }
.modal-rich pre { margin: 0 0 14px; padding: 14px 16px; overflow: auto; border-radius: 10px; background: rgba(17,17,17,.05); }
.modal-rich code { padding: 2px 6px; border-radius: 5px; background: rgba(17,17,17,.06); font-size: 13px; }
.modal-rich pre code { padding: 0; background: none; }
.modal-rich img { max-width: 100%; height: auto; margin: 6px 0 14px; border-radius: 10px; }
.modal-rich hr { margin: 18px 0; border: 0; border-top: 1px solid rgba(17,17,17,.12); }
.modal-rich table { width: 100%; margin: 0 0 14px; border-collapse: collapse; font-size: 13px; }
.modal-rich th, .modal-rich td { padding: 8px 10px; border: 1px solid rgba(17,17,17,.12); text-align: left; }
.modal-rich th { background: rgba(17,17,17,.04); color: var(--ink); }
body.modal-open { overflow: hidden; }

.reviews { background: var(--soft); }
.review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.review-grid blockquote { min-height: 240px; padding: 28px; display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 20px; background: #fff; }
.review-grid blockquote > span { color: var(--blue); font-family: Georgia, serif; font-size: 52px; line-height: .7; }
.review-grid p { margin-top: 22px; font-size: 15px; line-height: 1.7; }
.review-grid footer { margin-top: auto; padding-top: 25px; color: var(--muted); font-size: 11px; }
.final-cta { background: var(--accent); }
.final-cta-inner { min-height: 300px; display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.final-cta h2 { margin-top: 17px; font-size: clamp(42px, 5vw, 68px); line-height: 1; letter-spacing: -.05em; }

.floating-contact { position: fixed; right: 24px; bottom: 24px; z-index: 70; width: 53px; height: 53px; display: grid; place-items: center; border: 3px solid #fff; border-radius: 50%; color: #fff; background: var(--blue); box-shadow: 0 10px 26px rgba(36,88,255,.3); font-size: 10px; font-weight: 900; }
.site-footer { color: #999; background: #111; }
.footer-main { min-height: 125px; display: flex; align-items: center; justify-content: space-between; gap: 25px; }
.site-footer .brand { color: #fff; }
.footer-main > div { display: flex; align-items: center; gap: 22px; font-size: 11px; }
.footer-main > div a { color: #fff; font-weight: 800; }
.footer-bottom { padding: 20px 0 28px; border-top: 1px solid #292929; font-size: 10px; }

@media (max-width: 900px) {
    .main-nav { gap: 16px; }
    .hero-grid, .advantage-grid, .process-grid { grid-template-columns: 1fr; gap: 55px; }
    .hero-grid { padding-top: 65px; }
    .hero-visual { max-width: 650px; width: 100%; margin: 0 auto; }
    .advantage-media { min-height: 460px; max-width: 650px; }
    .advantage-media img { min-height: 425px; }
    .process-grid { gap: 65px; }
}
@media (max-width: 700px) {
    .container { width: min(100% - 32px, 1180px); }
    .header-inner { min-height: 68px; gap: 14px; }
    .brand img { width: 38px; height: 38px; }
    .brand span { font-size: 14px; }
    .header-contact { padding: 0 12px; font-size: 11px; }
    .menu-toggle { display: grid; }
    .main-nav { position: absolute; top: 68px; left: 0; right: 0; max-height: 0; overflow: hidden; display: grid; gap: 0; background: #fff; transition: max-height 220ms ease; }
    .main-nav.open { max-height: 350px; border-bottom: 1px solid var(--line); }
    .main-nav a { padding: 15px 20px; border-top: 1px solid var(--line); }
    .hero-grid { min-height: auto; padding: 75px 0 70px; }
    .hero h1 { font-size: clamp(46px, 14vw, 70px); }
    .hero-proof { margin-top: 55px; flex-wrap: wrap; }
    .hero-proof i { margin: 0 3px; }
    .hero-visual { min-height: 360px; }
    .visual-image { inset: 30px 8px 10px 35px; border-radius: 34% 8% 8% 8%; box-shadow: 14px 18px 0 var(--accent); }
    .orbit-one { width: 330px; height: 180px; top: 62px; left: 0; }
    .orbit-two { width: 280px; height: 130px; top: 108px; left: 28px; }
    .visual-card-top { top: 0; right: 0; }
    .visual-card-bottom { right: 8px; bottom: 0; }
    .logo-strip-inner { min-height: 110px; flex-wrap: wrap; justify-content: flex-start; gap: 12px 22px; padding: 20px 0; }
    .logo-strip-inner span { width: 100%; }
    .section { padding: 82px 0; }
    .section-top { display: block; margin-bottom: 38px; }
    .section-intro { margin-top: 25px; }
    .service-grid, .review-grid { grid-template-columns: 1fr; }
    .gallery-item { grid-template-columns: 1fr; }
    .product-media, .image-fallback { min-height: 200px; aspect-ratio: 1.6; }
    .item-description { padding: 24px; }
    .service-card { min-height: 320px; }
    .service-icon { margin-bottom: 35px; }
    .advantage-media { min-height: 350px; padding: 0 18px 18px 0; }
    .advantage-media img { min-height: 332px; }
    .media-label { left: -13px; bottom: 48px; }
    .metric-grid { grid-template-columns: repeat(2, 1fr); }
    .metric-grid div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
    .process-list li { min-height: 95px; }
    .case-grid { display: grid; grid-template-columns: 1fr; grid-template-rows: repeat(3, 220px); }
    .case-card-large { grid-row: auto; }
    .final-cta-inner { min-height: 340px; display: block; padding: 78px 0; }
    .final-cta .button { margin-top: 35px; }
    .footer-main { align-items: flex-start; flex-direction: column; padding: 30px 0; }
    .footer-main > div { align-items: flex-start; flex-direction: column; gap: 5px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; } }