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.page-hero{padding:190px 0 100px;background:linear-gradient(110deg,#f7f9fc,#edf3f8);position:relative;overflow:hidden}.page-hero:after{content:"";position:absolute;width:560px;height:560px;border:1px solid #d4e0ed;border-radius:50%;right:-110px;top:5px;box-shadow:0 0 0 65px rgba(220,230,241,.27),0 0 0 130px rgba(220,230,241,.15)}.page-hero .container{position:relative;z-index:2}.page-hero h1{font-size:clamp(48px,6vw,76px);line-height:1.18;letter-spacing:-.04em;margin:25px 0}.page-hero .container>p:last-child{font-size:17px;line-height:1.85;color:#637287;max-width:650px}.catalog-section{padding-top:80px}.catalog-intro{display:grid;grid-template-columns:1fr 2fr;border-bottom:1px solid var(--line);padding-bottom:30px;margin-bottom:10px}.catalog-intro span{font:600 11px Manrope;letter-spacing:.15em;color:var(--blue)}.catalog-intro p{margin:0;color:#68788c;line-height:1.8}.catalog-item{display:grid;grid-template-columns:60px 310px 1fr 55px;gap:35px;align-items:center;padding:45px 0;border-bottom:1px solid var(--line);transition:.3s}.catalog-item:hover{padding-left:15px;padding-right:15px;background:#f8fafc}.catalog-no{font:500 11px Manrope;color:#8d9aaa}.catalog-visual{height:175px;background:#dfe8f2;padding:20px 20px 0;overflow:hidden}.catalog-visual img{width:100%;height:100%;object-fit:cover;object-position:top}.catalog-visual .mini-canvas{padding:15px}.catalog-visual .mini-sidebar{padding:15px 9px}.catalog-copy h2{font-size:27px;margin:9px 0 13px}.catalog-copy p{font-size:14px;color:#69798c;line-height:1.8}.round-arrow{width:46px;height:46px;border:1px solid #bdc9d6;border-radius:50%;display:grid;place-items:center;color:var(--blue);font-size:19px}.catalog-item:hover .round-arrow{background:var(--blue);border-color:var(--blue);color:#fff}.detail-hero{padding:175px 0 100px;background:#f3f6fa}.detail-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:80px;align-items:center}.back-link{display:inline-block;font-size:12px;color:#78879a;margin-bottom:55px}.detail-copy h1{font-size:clamp(42px,5vw,66px);line-height:1.18;margin:20px 0 24px;letter-spacing:-.04em}.detail-copy>p:not(.kicker){color:#617186;font-size:16px;line-height:1.9}.detail-copy .btn{margin-top:25px}.detail-visual{height:420px;background:#dce6f1;padding:42px 42px 0;overflow:hidden}.detail-visual>img{width:100%;height:100%;object-fit:cover;object-position:top;box-shadow:0 25px 50px rgba(27,57,91,.2)}.large-ui{height:100%;background:#fff;box-shadow:0 25px 50px rgba(27,57,91,.2)}.large-top{height:39px;border-bottom:1px solid #e3e9ef;padding:0 14px;display:flex;align-items:center;gap:6px}.large-top i{width:6px;height:6px;background:#c5d0dc;border-radius:50%}.large-top i:first-child{background:var(--blue)}.large-top span{font:600 7px Manrope;letter-spacing:.13em;color:#8795a5;margin-left:10px}.large-body{height:calc(100% - 39px);display:flex}.large-body aside{width:77px;background:var(--navy);padding:24px 16px}.large-body aside>*{display:block;height:4px;background:rgba(255,255,255,.22);margin-bottom:17px}.large-body aside b{background:#fff;margin-bottom:35px}.large-body section{flex:1;padding:25px}.large-body header{display:flex;justify-content:space-between}.large-body header span{width:38%;height:8px;background:#dfe6ed}.large-body header b{width:18%;height:18px;background:#dcecff}.large-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:28px}.large-cards i{height:85px;background:#eef3f7;border-top:3px solid #7faee6}.large-lines{margin-top:22px}.large-lines em{display:block;height:5px;margin-top:12px;background:#e7edf3}.large-lines em:nth-child(2){width:87%}.large-lines em:nth-child(3){width:94%}.large-lines em:nth-child(4){width:70%}.two-col{display:grid;grid-template-columns:.75fr 1.25fr;gap:110px}.two-col h2{font-size:40px;line-height:1.4;margin-top:20px}.detail-description>p{font-size:17px;line-height:2.1;color:#596a7f;margin-top:0}.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);margin-top:50px;border-top:1px solid var(--line);border-left:1px solid var(--line)}.feature-grid div{padding:27px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.feature-grid span{display:block;font:500 10px Manrope;color:#8292a5;margin-bottom:25px}.feature-grid strong{font-size:15px}.more-section{background:var(--pale)}.more-section>div>h2{font-size:38px;margin:17px 0 40px}.more-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.more-grid a{background:#fff;padding:28px;display:grid;gap:15px;transition:.25s}.more-grid a:hover{transform:translateY(-4px);box-shadow:0 16px 35px rgba(23,48,76,.09)}.more-grid small{color:#718399;font:500 9px Manrope;text-transform:uppercase}.more-grid strong{font-size:18px}.more-grid span{color:var(--blue);font-size:20px}.solution-catalog{background:#f7f9fc}.solution-panel{display:grid;grid-template-columns:1fr .9fr .8fr;gap:60px;align-items:center;padding:55px;background:#fff;border-bottom:1px solid var(--line);margin-bottom:18px}.solution-title{display:flex;gap:28px}.solution-title>span{font:500 11px Manrope;color:#8292a4}.solution-title p{font:600 9px Manrope;letter-spacing:.14em;color:var(--blue);margin:0}.solution-title h2{font-size:29px;margin:12px 0}.solution-abstract p{font-size:14px;line-height:1.9;color:#68798d}.solution-abstract a{font-size:13px;color:var(--blue);display:inline-flex;gap:25px;margin-top:15px}.solution-diagram{height:145px;position:relative;border:1px solid #e2e9f0}.solution-diagram i{position:absolute;width:32px;height:32px;border:1px solid #8eb6e5;background:#edf5ff}.solution-diagram i:nth-child(1){left:22px;top:22px}.solution-diagram i:nth-child(2){right:22px;top:22px}.solution-diagram i:nth-child(3){left:22px;bottom:22px}.solution-diagram i:nth-child(4){right:22px;bottom:22px}.solution-diagram b{position:absolute;background:#b9cde4}.solution-diagram b:nth-of-type(1){width:calc(100% - 76px);height:1px;top:38px;left:38px}.solution-diagram b:nth-of-type(2){width:1px;height:calc(100% - 76px);left:38px;top:38px}.solution-diagram b:nth-of-type(3){width:calc(100% - 76px);height:1px;bottom:38px;left:38px}.abstract-system{height:390px;position:relative;border:1px solid #cad8e7;background:#fff}.abstract-system span,.abstract-system b{position:absolute;width:105px;height:55px;display:grid;place-items:center;border:1px solid #bdd0e6;font-size:12px;background:#f2f7fd}.abstract-system span:nth-child(1){left:35px;top:35px}.abstract-system span:nth-child(2){right:35px;top:35px}.abstract-system span:nth-child(3){left:35px;bottom:35px}.abstract-system span:nth-child(4){right:35px;bottom:35px}.abstract-system b{width:140px;height:80px;left:50%;top:50%;transform:translate(-50%,-50%);background:var(--navy);color:#fff;border:0}.abstract-system i{position:absolute;background:#a8bfd9}.abstract-system i:nth-of-type(1){height:1px;left:140px;right:50%;top:62px;transform:rotate(29deg);transform-origin:right}.abstract-system i:nth-of-type(2){height:1px;right:140px;left:50%;top:62px;transform:rotate(-29deg);transform-origin:left}.abstract-system i:nth-of-type(3){height:1px;left:140px;right:50%;bottom:62px;transform:rotate(-29deg);transform-origin:right}.abstract-system i:nth-of-type(4){height:1px;right:140px;left:50%;bottom:62px;transform:rotate(29deg);transform-origin:left}.service-page{background:#f7f9fc}.service-flow{max-width:940px;margin:auto}.service-item{display:grid;grid-template-columns:130px 1fr;gap:50px;padding:50px 0;border-bottom:1px solid var(--line)}.service-index{position:relative}.service-index span{font:500 13px Manrope;color:var(--blue)}.service-index i{position:absolute;top:35px;bottom:-51px;left:7px;width:1px;background:#ccd8e5}.service-item:last-child .service-index i{display:none}.service-item h2{font-size:31px;margin:0 0 14px}.service-item strong{font-size:15px;color:#44566e}.service-item p{font-size:14px;line-height:1.9;color:#6a7b8f}.contact-banner.compact .container{grid-template-columns:1fr auto}.contact-banner.compact h2{margin:0}.about-hero h1{font-size:82px}.about-page h2{font:700 55px/1.2 Manrope;letter-spacing:.1em}.about-page h2 span{font:500 25px "Noto Sans SC";letter-spacing:.35em;color:#697b91}.about-copy{white-space:pre-line;font-size:17px;line-height:2.1;color:#596b80}.brand-story{background:var(--pale);padding-top:0}.brand-panel{background:var(--navy);color:#fff;padding:75px;display:grid;grid-template-columns:1.1fr .9fr;gap:70px;align-items:center;overflow:hidden}.giant-brand{font:700 clamp(50px,8vw,110px) Manrope;letter-spacing:.08em;color:transparent;-webkit-text-stroke:1px rgba(255,255,255,.32);transform:translateX(-105px)}.brand-panel h2{font-size:37px}.brand-panel>div:last-child>p:last-child{color:#a4b4c6;line-height:1.9}.contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:100px}.contact-info h2{font-size:34px;margin:20px 0 55px}.contact-info dl>div{padding:20px 0;border-top:1px solid var(--line)}.contact-info dt{font-size:11px;color:#8492a3;margin-bottom:9px}.contact-info dd{margin:0;font-size:15px}.contact-info dd a{color:var(--blue)}.contact-note{font-size:12px;color:#7b8b9e;margin-top:35px}.inquiry-form{background:var(--pale);padding:45px}.inquiry-form h2{font-size:28px;margin:0 0 35px}.inquiry-form>label,.form-row label{display:block;margin-bottom:24px}.inquiry-form label>span{display:block;font-size:12px;margin-bottom:10px;color:#4d5f75}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}.inquiry-form input[type=text],.inquiry-form textarea{width:100%;border:1px solid #ced8e3;background:#fff;padding:14px 15px;outline:none;transition:.2s}.inquiry-form input:focus,.inquiry-form textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(23,105,224,.08)}.inquiry-form textarea{resize:vertical}.privacy-check{display:flex!important;align-items:flex-start;gap:10px}.privacy-check input{margin-top:3px}.privacy-check span{line-height:1.7!important;color:#718196!important}.privacy-check a{color:var(--blue)}.honeypot{position:absolute!important;left:-10000px!important}.submit-btn{border:0}.form-message{font-size:13px;margin:18px 0 0}.form-message.success{color:#14804a}.form-message.error{color:#c53939}.legal-hero{padding-bottom:70px}.legal-page{padding-top:75px}.narrow{max-width:850px}.legal-copy{white-space:pre-line;font-size:16px;line-height:2.15;color:#4f6075}.legal-contact{border-top:1px solid var(--line);margin-top:55px;padding-top:28px;display:flex;justify-content:space-between}.legal-contact a{color:var(--blue)}
.reveal{opacity:1;transform:none}.js .reveal{opacity:0;transform:translateY(24px);transition:opacity .75s var(--ease),transform .75s var(--ease)}.js .reveal.visible{opacity:1;transform:none}
@media(max-width:1080px){.main-nav{gap:20px}.hero-inner{grid-template-columns:1fr 1fr}.window-main{width:440px}.window-card{left:-10px}.section{padding:90px 0}.business-card{padding:30px 25px}.process-track{grid-template-columns:repeat(3,1fr)}.process-step:nth-child(n+4){margin-top:45px}.catalog-item{grid-template-columns:45px 250px 1fr 45px}.solution-panel{grid-template-columns:1fr 1fr}.solution-diagram{display:none}.detail-grid{gap:45px}.footer-main{gap:50px}}
@media(max-width:820px){.container{width:min(calc(100% - 36px),var(--max))}.site-header,.site-header.scrolled{height:68px}.nav-toggle{display:block}.main-nav{position:fixed;z-index:60;top:68px;right:0;bottom:auto;left:0;width:100%;height:calc(100vh - 68px);overflow-y:auto;background:#fff;padding:35px 24px;display:flex;flex-direction:column;align-items:stretch;gap:0;transform:translateX(100%);transition:.35s var(--ease)}.menu-open .main-nav{transform:none}.main-nav>a,.site-header.scrolled .main-nav>a{height:58px;min-height:58px;border-bottom:1px solid var(--line);font-size:16px}.main-nav .nav-contact{margin-top:20px;border:1px solid var(--blue);justify-content:center}.hero{height:auto;max-height:none;min-height:0;padding:130px 0 80px;background:linear-gradient(155deg,#fff 0,#fff 62%,#f0f5fa 62%)}.hero-inner{grid-template-columns:1fr}.hero h1{font-size:46px}.hero-visual{height:400px;margin-top:20px}.window-main{width:94%;height:290px;top:45px}.window-card{bottom:0}.window-data{right:0;top:0}.scroll-hint{display:none}.section-heading{grid-template-columns:1fr;gap:25px}.section-heading>div{padding-left:45px}.business-grid{grid-template-columns:1fr}.business-card{min-height:330px}.line-icon{margin:35px 0 25px}.business-card p{min-height:auto}.product-grid{grid-template-columns:1fr}.scenario-row{grid-template-columns:45px 1fr 30px;padding:25px 0}.scenario-row p{grid-column:2}.process-track{grid-template-columns:repeat(2,1fr)}.process-step:nth-child(n+3){margin-top:40px}.contact-banner .container{grid-template-columns:1fr}.contact-banner .btn{grid-column:1;grid-row:auto;margin-top:30px;justify-self:start}.footer-main{grid-template-columns:1fr}.footer-bottom{flex-direction:column;gap:18px}.catalog-item{grid-template-columns:35px 1fr 42px;gap:20px}.catalog-visual{grid-column:2;height:220px}.catalog-copy{grid-column:2}.round-arrow{grid-column:3;grid-row:1/4}.detail-grid{grid-template-columns:1fr}.detail-visual{height:370px}.two-col{grid-template-columns:1fr;gap:35px}.solution-panel{grid-template-columns:1fr;padding:35px}.contact-grid{grid-template-columns:1fr;gap:55px}.brand-panel{grid-template-columns:1fr}.giant-brand{transform:none}.footer-links{grid-template-columns:repeat(3,1fr)}}
@media(max-width:540px){.container{width:calc(100% - 30px)}.brand-type strong{font-size:16px}.hero{padding-top:115px}.hero h1{font-size:39px}.hero-copy>p{font-size:15px}.hero-actions{flex-direction:column}.hero .btn{width:100%}.hero-domains{flex-direction:column;gap:10px}.hero-domains span{border:0;padding:0}.hero-visual{height:310px}.window-main{height:230px}.ui-content{padding:17px}.ui-chart{height:92px;padding:12px;gap:9px}.ui-side{width:52px;padding:18px 10px}.window-card{width:175px;padding:14px}.window-data{width:150px;padding:14px}.section{padding:70px 0}.section-heading{margin-bottom:40px}.section-heading h2{font-size:34px}.business-card{padding:28px}.product-shot{height:190px;padding:22px 22px 0}.product-info{padding:25px}.scenario-row{grid-template-columns:32px 1fr 25px;gap:12px}.scenario-row h3{font-size:19px}.process-track{grid-template-columns:1fr}.process-step:nth-child(n+2){margin-top:35px}.contact-banner h2{font-size:34px}.footer-links{grid-template-columns:1fr 1fr}.footer-links>div:last-child{grid-column:1/3}.filings{flex-wrap:wrap}.page-hero{padding:135px 0 70px}.page-hero h1,.about-hero h1{font-size:46px}.catalog-intro{grid-template-columns:1fr;gap:15px}.catalog-item{grid-template-columns:26px 1fr 38px}.catalog-visual{height:170px}.detail-hero{padding:120px 0 70px}.back-link{margin-bottom:35px}.detail-visual{height:275px;padding:24px 24px 0}.large-body aside{width:55px}.feature-grid{grid-template-columns:1fr}.more-grid{grid-template-columns:1fr}.service-item{grid-template-columns:55px 1fr;gap:20px}.brand-panel{padding:40px 28px}.about-page h2{font-size:40px}.inquiry-form{padding:28px 20px}.form-row{grid-template-columns:1fr;gap:0}.legal-contact{flex-direction:column;gap:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.js .reveal{opacity:1;transform:none;transition:none}*{animation:none!important}}

/* Product screenshots: preserve the full 1920 × 953 interface and use one visual language. */
.product-shot.has-image {
    height: auto;
    min-height: 0;
    padding: 13px;
    background: linear-gradient(145deg, #edf3f9, #dce7f2);
    border-bottom: 1px solid #d9e3ee;
}

.product-shot.has-image > img {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 1920 / 953;
    object-fit: contain;
    object-position: center;
    background: #fff;
    box-shadow: 0 12px 28px rgba(22, 50, 82, 0.14);
}

.catalog-item {
    grid-template-columns: 48px minmax(350px, 420px) minmax(260px, 1fr) 54px;
    gap: 34px;
    padding: 48px 0;
}

.catalog-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    height: auto;
    padding: 12px;
    overflow: hidden;
    background: linear-gradient(145deg, #edf3f9, #dce7f2);
    border: 1px solid #d8e3ee;
    box-shadow: 0 10px 30px rgba(21, 48, 78, 0.06);
}

.catalog-visual img {
    display: block;
    width: 100%;
    max-width: 100%;
    height: auto;
    aspect-ratio: 1920 / 953;
    object-fit: contain;
    object-position: center;
    background: #fff;
    box-shadow: 0 8px 18px rgba(22, 50, 82, 0.12);
    transition: transform 0.45s var(--ease), box-shadow 0.45s var(--ease);
}

.catalog-item:hover .catalog-visual img {
    transform: scale(1.018);
    box-shadow: 0 12px 26px rgba(22, 50, 82, 0.18);
}

.catalog-visual .mini-ui {
    aspect-ratio: 1920 / 953;
}

.detail-grid {
    grid-template-columns: minmax(310px, 0.68fr) minmax(0, 1.32fr);
    gap: 58px;
}

.detail-visual.has-cover {
    height: auto;
    padding: 20px;
    overflow: visible;
    background: linear-gradient(145deg, #eaf1f8, #d8e4f0);
    border: 1px solid #d5e0eb;
    box-shadow: 0 22px 60px rgba(22, 50, 82, 0.11);
}

.interface-frame {
    display: block;
    overflow: hidden;
    background: #fff;
    border: 1px solid #cfdbe7;
    box-shadow: 0 22px 45px rgba(19, 46, 77, 0.18);
    transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.interface-frame:hover {
    transform: translateY(-3px);
    box-shadow: 0 28px 55px rgba(19, 46, 77, 0.23);
}

.interface-frame-bar {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    height: 36px;
    padding: 0 13px;
    color: #77879a;
    background: #f8fafc;
    border-bottom: 1px solid #e2e9f0;
}

.frame-dots {
    display: flex;
    gap: 5px;
}

.frame-dots i {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #c6d1dc;
}

.frame-dots i:first-child {
    background: var(--blue);
}

.frame-label,
.frame-open {
    font: 600 8px Manrope, sans-serif;
    letter-spacing: 0.14em;
}

.frame-open {
    justify-self: end;
    color: var(--blue);
    letter-spacing: 0.06em;
}

.interface-frame > img {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 1920 / 953;
    object-fit: contain;
    object-position: center;
    background: #fff;
}

@media (max-width: 1080px) {
    .catalog-item {
        grid-template-columns: 40px minmax(300px, 360px) minmax(220px, 1fr) 46px;
        gap: 25px;
    }

    .detail-grid {
        grid-template-columns: minmax(280px, 0.72fr) minmax(0, 1.28fr);
        gap: 38px;
    }
}

@media (max-width: 820px) {
    .catalog-item {
        grid-template-columns: 30px minmax(0, 1fr) 42px;
        gap: 18px;
        padding: 34px 0;
    }

    .catalog-no {
        grid-column: 1;
        grid-row: 1 / 3;
        align-self: start;
        padding-top: 13px;
    }

    .catalog-visual {
        grid-column: 2 / 4;
        grid-row: 1;
        height: auto;
    }

    .catalog-copy {
        grid-column: 2;
        grid-row: 2;
    }

    .round-arrow {
        grid-column: 3;
        grid-row: 2;
        align-self: center;
    }

    .detail-grid {
        grid-template-columns: 1fr;
        gap: 45px;
    }

    .detail-visual.has-cover {
        height: auto;
        padding: 17px;
    }
}

@media (max-width: 540px) {
    .catalog-item {
        grid-template-columns: 23px minmax(0, 1fr) 38px;
        gap: 12px;
    }

    .catalog-visual {
        height: auto;
        padding: 8px;
    }

    .detail-visual.has-cover {
        height: auto;
        padding: 9px;
    }

    .interface-frame-bar {
        grid-template-columns: 1fr auto;
        height: 32px;
        padding: 0 10px;
    }

    .frame-label {
        display: none;
    }

    .frame-open {
        grid-column: 2;
    }
}

/* -------------------------------------------------------------------------
   LINGFAN visual refresh — a quiet blueprint language for professional work
   ------------------------------------------------------------------------- */
:root {
    --navy: #071a33;
    --navy-2: #0e2a4b;
    --blue: #1f6fe5;
    --blue-2: #62a8f7;
    --ink: #10243e;
    --muted: #63748a;
    --paper: #f7f9fc;
    --line: #d9e3ed;
    --max: 1240px;
}

body {
    background: var(--paper);
    color: var(--ink);
}

body::selection {
    background: var(--blue);
    color: #fff;
}

.site-header {
    height: 78px;
    background: rgba(247, 249, 252, .9);
    border-bottom-color: rgba(10, 35, 64, .12);
}

.site-header.scrolled {
    height: 66px;
    background: rgba(255, 255, 255, .96);
    box-shadow: 0 10px 36px rgba(17, 42, 70, .08);
}

.brand {
    gap: 0;
}

.brand-mark {
    display: none !important;
}

.brand-type {
    gap: 0;
}

.brand-type strong {
    color: var(--navy);
    font-size: 19px;
    font-weight: 700;
    letter-spacing: .22em;
}

.brand-type small {
    margin-top: 7px;
    color: #76879a;
    font-size: 9px;
    letter-spacing: .42em;
}

.brand-light .brand-type strong {
    color: #fff;
}

.brand-light .brand-type small {
    color: #9eafc3;
}

.main-nav {
    gap: 8px;
}

.main-nav > a,
.site-header.scrolled .main-nav > a {
    height: 78px;
    padding: 0 15px;
    color: #42536a;
    font-size: 13px;
}

.site-header.scrolled .main-nav > a {
    height: 66px;
}

.main-nav > a::after {
    left: 15px;
    right: 100%;
    height: 2px;
    bottom: 0;
}

.main-nav > a:hover::after,
.main-nav > a.active::after {
    right: 15px;
}

.main-nav .nav-contact,
.main-nav .nav-contact:hover,
.main-nav .nav-contact.active {
    height: 42px;
    margin-left: 8px;
    padding: 0 19px;
    border-color: #b8c9db;
    background: transparent;
    color: var(--ink);
}

.main-nav .nav-contact:hover,
.main-nav .nav-contact.active {
    border-color: var(--blue);
    background: var(--blue);
    color: #fff;
}

.hero {
    min-height: 720px;
    padding-top: 78px;
    background: linear-gradient(115deg, #fbfcfe 0%, #fbfcfe 53%, #eef4fa 53%, #f4f8fc 100%);
}

.hero-grid {
    opacity: .24;
    background-size: 48px 48px;
}

.hero-inner {
    gap: 76px;
}

.hero-copy {
    max-width: 620px;
}

.eyebrow,
.kicker {
    font-size: 10px;
    letter-spacing: .22em;
}

.eyebrow span {
    width: 44px;
}

.hero h1 {
    max-width: 600px;
    margin-top: 28px;
    font-size: clamp(46px, 5.1vw, 72px);
    line-height: 1.18;
    letter-spacing: -.055em;
}

.hero-copy > p {
    max-width: 540px;
    color: #5b6d82;
    font-size: 17px;
    line-height: 1.95;
}

.hero-actions {
    margin-top: 34px;
}

.btn {
    min-width: 142px;
    height: 50px;
    border-radius: 0;
    letter-spacing: .02em;
}

.btn-primary {
    box-shadow: 0 14px 30px rgba(31, 111, 229, .16);
}

.btn-primary:hover {
    background: #155bbf;
    box-shadow: 0 18px 34px rgba(31, 111, 229, .25);
}

.btn-ghost {
    background: rgba(255, 255, 255, .65);
}

.hero-domains {
    gap: 0;
    margin-top: 50px;
}

.hero-domains span {
    padding: 0 16px;
    color: #52657b;
    font-size: 11px;
}

.hero-visual::before {
    content: "SYSTEMS / SCENARIOS / PRACTICE";
    position: absolute;
    top: 7px;
    right: 0;
    color: #7e93aa;
    font: 600 8px Manrope, sans-serif;
    letter-spacing: .18em;
}

.visual-orbit {
    border-color: rgba(31, 111, 229, .18);
}

.window-main {
    border-color: rgba(31, 91, 150, .18);
    box-shadow: 0 28px 64px rgba(18, 49, 83, .17);
}

.window-card,
.window-data {
    border-color: rgba(31, 91, 150, .18);
    box-shadow: 0 20px 44px rgba(18, 49, 83, .13);
}

.section {
    padding: 112px 0;
}

.section-heading {
    gap: 60px;
    margin-bottom: 58px;
}

.section-heading > div {
    padding-left: 58px;
}

.section-index {
    top: 3px;
    color: #6f8297;
}

.section-heading h2 {
    margin-top: 17px;
    font-size: clamp(34px, 3.7vw, 53px);
}

.heading-note {
    max-width: 360px;
    font-size: 14px;
    line-height: 2;
}

.business-grid {
    border-color: #cedae6;
}

.business-card {
    min-height: 390px;
    padding: 36px 34px;
    background: rgba(255, 255, 255, .45);
}

.business-card:hover {
    background: var(--navy);
}

.line-icon {
    width: 52px;
    height: 52px;
    margin: 46px 0 27px;
}

.business-card h3 {
    font-size: 21px;
}

.business-card p {
    font-size: 13px;
    line-height: 1.95;
}

.products-section {
    position: relative;
    overflow: hidden;
    background: var(--navy);
}

.products-section::before {
    content: "";
    position: absolute;
    right: -180px;
    top: -280px;
    width: 610px;
    height: 610px;
    border: 1px solid rgba(133, 185, 242, .16);
    border-radius: 50%;
    box-shadow: 0 0 0 50px rgba(133, 185, 242, .045), 0 0 0 120px rgba(133, 185, 242, .03);
}

.products-section > .container {
    position: relative;
    z-index: 1;
}

.product-grid {
    gap: 22px;
}

.product-card {
    border-color: rgba(160, 197, 235, .2);
    background: rgba(13, 39, 72, .82);
}

.product-card:hover {
    border-color: rgba(100, 175, 252, .8);
}

.product-shot {
    height: 238px;
}

.product-shot.has-image {
    padding: 12px;
}

.product-info {
    padding: 28px 30px 31px;
}

.product-info h3 {
    font-size: 21px;
}

.product-info p {
    font-size: 13px;
    line-height: 1.9;
}

.scenario-row {
    min-height: 118px;
}

.scenario-row:hover {
    padding-left: 16px;
    background: #f0f5fa;
}

.scenario-row h3 {
    font-size: 21px;
}

.process-section {
    background: #eef3f8;
}

.process-step {
    min-height: 220px;
}

.contact-banner {
    position: relative;
    overflow: hidden;
    background: var(--blue);
}

.contact-banner::after {
    content: "";
    position: absolute;
    right: -100px;
    top: -190px;
    width: 470px;
    height: 470px;
    border: 1px solid rgba(255, 255, 255, .24);
    border-radius: 50%;
    box-shadow: 0 0 0 44px rgba(255, 255, 255, .05), 0 0 0 98px rgba(255, 255, 255, .03);
}

.contact-banner .container {
    position: relative;
    z-index: 1;
}

.site-footer {
    padding-top: 68px;
    background: #06182e;
}

.footer-main {
    padding-bottom: 58px;
}

.footer-brand > p {
    max-width: 220px;
    line-height: 1.8;
}

.page-hero {
    padding: 174px 0 96px;
    background: linear-gradient(115deg, #f7f9fc, #e9f1f8);
}

.page-hero::after {
    width: 520px;
    height: 520px;
    right: -160px;
    top: -40px;
    border-color: #c5d8ea;
    box-shadow: 0 0 0 58px rgba(201, 219, 235, .28), 0 0 0 118px rgba(201, 219, 235, .14);
}

.page-hero h1 {
    margin: 22px 0 20px;
    font-size: clamp(46px, 6vw, 75px);
}

.catalog-section,
.solution-catalog,
.service-page {
    background: var(--paper);
}

.catalog-section {
    padding-top: 74px;
}

.catalog-intro {
    padding-bottom: 28px;
}

.catalog-item {
    padding: 40px 0;
}

.catalog-item:hover {
    padding-left: 14px;
    padding-right: 14px;
    background: #f0f5fa;
}

.catalog-visual {
    background: linear-gradient(145deg, #eef4f9, #dce7f2);
    border-color: #d3e0ec;
}

.catalog-copy h2 {
    font-size: 25px;
}

.round-arrow {
    transition: .25s var(--ease);
}

.detail-hero {
    padding: 164px 0 96px;
    background: linear-gradient(120deg, #f2f6fa, #e8f0f7);
}

.detail-copy h1 {
    font-size: clamp(40px, 4.8vw, 64px);
}

.detail-visual.has-cover,
.solution-artwork {
    box-shadow: 0 24px 60px rgba(16, 46, 79, .14);
}

.detail-content {
    background: #fff;
}

.feature-grid {
    border-color: #d8e2ec;
}

.feature-grid div {
    padding: 24px;
    background: #fbfcfe;
}

.more-section,
.brand-story {
    background: #eef3f8;
}

.solution-panel {
    border: 1px solid #dce5ee;
    box-shadow: 0 14px 32px rgba(27, 60, 94, .045);
}

.solution-panel:hover {
    box-shadow: 0 20px 42px rgba(27, 60, 94, .09);
}

.service-item {
    padding: 44px 0;
}

.service-item h2 {
    font-size: 29px;
}

.brand-panel {
    padding: 72px;
    background: var(--navy);
    box-shadow: 0 24px 55px rgba(16, 43, 75, .13);
}

.giant-brand {
    transform: none;
    font-size: clamp(58px, 8vw, 110px);
    letter-spacing: .1em;
    white-space: nowrap;
}

.contact-page {
    background: #fff;
}

.inquiry-form {
    background: #eef3f8;
    border: 1px solid #dce5ee;
}

.legal-page {
    background: #fff;
}

.legal-copy {
    max-width: 780px;
    font-size: 15px;
    line-height: 2.2;
}

@media (max-width: 820px) {
    .site-header,
    .site-header.scrolled {
        height: 68px;
    }

    .main-nav {
        top: 68px;
        height: calc(100vh - 68px);
        background: #f7f9fc;
    }

    .main-nav > a,
    .site-header.scrolled .main-nav > a {
        height: 58px;
        padding: 0 4px;
    }

    .main-nav > a::after {
        left: 4px;
        right: 100%;
    }

    .main-nav > a:hover::after,
    .main-nav > a.active::after {
        right: 4px;
    }

    .main-nav .nav-contact {
        margin-left: 0;
    }

    .hero {
        padding-top: 120px;
    }

    .hero-inner {
        gap: 38px;
    }

    .hero-visual::before {
        top: -10px;
    }

    .section {
        padding: 88px 0;
    }

    .business-card {
        min-height: 330px;
    }

    .page-hero,
    .detail-hero {
        padding-top: 132px;
    }

    .brand-panel {
        padding: 52px 42px;
    }
}

@media (max-width: 540px) {
    .container {
        width: calc(100% - 30px);
    }

    .brand-type strong {
        font-size: 17px;
    }

    .brand-type small {
        font-size: 8px;
    }

    .hero {
        padding-top: 112px;
    }

    .hero h1 {
        font-size: 40px;
    }

    .hero-domains {
        margin-top: 38px;
    }

    .section {
        padding: 72px 0;
    }

    .section-heading > div {
        padding-left: 42px;
    }

    .products-section::before {
        right: -360px;
    }

    .page-hero,
    .detail-hero {
        padding-top: 116px;
    }

    .page-hero h1,
    .about-hero h1 {
        font-size: 45px;
    }

    .catalog-item {
        padding: 30px 0;
    }

    .catalog-item:hover {
        padding-left: 8px;
        padding-right: 8px;
    }

    .brand-panel {
        padding: 42px 26px;
    }

    .giant-brand {
        font-size: 46px;
        letter-spacing: .06em;
    }
}

/* About brand wordmark: keep the complete LINGFAN outline inside its grid column. */
.giant-brand {
    max-width: 100%;
    font-size: clamp(58px, 6.8vw, 98px);
    line-height: 0.98;
    letter-spacing: 0.055em;
    white-space: nowrap;
    transform: none;
}

@media (max-width: 1080px) {
    .brand-panel {
        gap: 45px;
        padding: 60px;
    }

    .giant-brand {
        font-size: clamp(54px, 7vw, 78px);
    }
}

@media (max-width: 820px) {
    .brand-panel {
        gap: 38px;
    }

    .giant-brand {
        font-size: clamp(54px, 12vw, 84px);
        letter-spacing: 0.045em;
    }
}

@media (max-width: 540px) {
    .brand-panel {
        padding: 40px 28px;
    }

    .brand-panel h2 {
        font-size: 31px;
        line-height: 1.4;
    }

    .giant-brand {
        font-size: clamp(43px, 12vw, 58px);
        letter-spacing: 0.035em;
    }
}

/* Solution catalog thumbnails: reuse each solution's responsive hero artwork. */
.solution-panel {
    grid-template-columns: minmax(250px, 0.95fr) minmax(220px, 0.8fr) minmax(330px, 1.15fr);
    gap: 42px;
    padding: 42px;
}

.solution-thumbnail {
    display: block;
    overflow: hidden;
    padding: 7px 7px 0;
    background: linear-gradient(145deg, #edf3f9, #dbe7f2);
    border: 1px solid #d5e1ec;
    box-shadow: 0 12px 35px rgba(19, 47, 79, 0.09);
    transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.solution-thumbnail img {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 1672 / 941;
    object-fit: contain;
    object-position: center;
    background: #f4f8fc;
    transition: transform 0.55s var(--ease);
}

.solution-thumbnail > span {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 30px;
    padding: 0 3px;
    color: #64758a;
}

.solution-thumbnail small {
    font: 600 7px Manrope, sans-serif;
    letter-spacing: 0.14em;
}

.solution-thumbnail b {
    color: var(--blue);
    font-size: 15px;
    font-weight: 500;
}

.solution-thumbnail:hover {
    transform: translateY(-3px);
    box-shadow: 0 18px 42px rgba(19, 47, 79, 0.15);
}

.solution-thumbnail:hover img {
    transform: scale(1.018);
}

@media (max-width: 1080px) {
    .solution-panel {
        grid-template-columns: 1fr 1fr;
        gap: 28px 35px;
        padding: 38px;
    }

    .solution-thumbnail {
        grid-column: 1 / 3;
    }
}

@media (max-width: 820px) {
    .solution-panel {
        grid-template-columns: 1fr;
        gap: 24px;
        padding: 30px;
    }

    .solution-thumbnail {
        grid-column: 1;
    }
}

@media (max-width: 540px) {
    .solution-panel {
        padding: 22px;
    }

    .solution-thumbnail {
        padding: 5px 5px 0;
    }
}

/* Solution detail artwork: premium image frame with uncropped responsive media. */
.solution-detail .detail-grid {
    grid-template-columns: minmax(300px, 0.66fr) minmax(0, 1.34fr);
    gap: 56px;
}

.solution-artwork {
    position: relative;
    margin: 0;
    padding: 12px 12px 0;
    overflow: hidden;
    background: linear-gradient(145deg, #edf3f9, #d9e5f1);
    border: 1px solid #d3dfeb;
    box-shadow: 0 24px 65px rgba(17, 44, 75, 0.14);
}

.solution-artwork::before {
    content: "";
    position: absolute;
    z-index: 2;
    top: 0;
    left: 12px;
    width: 88px;
    height: 3px;
    background: linear-gradient(90deg, var(--blue), #58b8ff);
}

.solution-artwork-media {
    position: relative;
    overflow: hidden;
    aspect-ratio: 1672 / 941;
    background: #f4f8fc;
}

.solution-artwork-media::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    border: 1px solid rgba(96, 139, 186, 0.15);
    box-shadow: inset 0 0 45px rgba(255, 255, 255, 0.22);
}

.solution-artwork img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
    transition: transform 0.7s var(--ease);
}

.solution-artwork:hover img {
    transform: scale(1.012);
}

.solution-artwork figcaption {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 42px;
    padding: 0 4px;
    color: #64768b;
    font: 600 8px Manrope, sans-serif;
    letter-spacing: 0.13em;
}

.solution-artwork figcaption span:last-child {
    color: var(--blue);
}

@media (max-width: 1080px) {
    .solution-detail .detail-grid {
        grid-template-columns: minmax(280px, 0.72fr) minmax(0, 1.28fr);
        gap: 38px;
    }
}

@media (max-width: 820px) {
    .solution-detail .detail-grid {
        grid-template-columns: 1fr;
        gap: 42px;
    }
}

@media (max-width: 540px) {
    .solution-artwork {
        padding: 7px 7px 0;
    }

    .solution-artwork::before {
        left: 7px;
        width: 66px;
    }

    .solution-artwork figcaption {
        min-height: 36px;
        font-size: 7px;
        letter-spacing: 0.08em;
    }

    .solution-artwork figcaption span:last-child {
        display: none;
    }
}

/* Final color calibration: deep ink, glacier blue, and soft paper surfaces. */
:root {
    --navy: #071b34;
    --navy-2: #0d2a4d;
    --blue: #216ed4;
    --blue-2: #63b4df;
    --ink: #10243d;
    --muted: #64778d;
    --paper: #f6f9fc;
    --line: #d7e2ec;
    --signal: #51b4d2;
}

body {
    color: var(--ink);
    background: var(--paper);
}

.site-header {
    background: rgba(246, 249, 252, .92);
    border-bottom-color: rgba(10, 35, 64, .1);
}

.site-header.scrolled {
    background: rgba(252, 253, 255, .97);
}

.brand-type strong {
    color: #0a203b;
}

.main-nav > a {
    color: #506177;
}

.main-nav > a:hover,
.main-nav > a.active {
    color: var(--blue);
}

.hero {
    background: linear-gradient(116deg, #fbfdff 0%, #fbfdff 53%, #edf5fa 53%, #f5f9fc 100%);
}

.hero-grid {
    opacity: .2;
    background-image: linear-gradient(rgba(22, 83, 130, .065) 1px, transparent 1px), linear-gradient(90deg, rgba(22, 83, 130, .065) 1px, transparent 1px);
}

.hero-copy > p,
.heading-note,
.page-hero .container > p:last-child {
    color: #60748a;
}

.btn-primary {
    background: linear-gradient(135deg, #216ed4 0%, #287fdf 100%);
    box-shadow: 0 14px 28px rgba(33, 110, 212, .18);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #195db8 0%, #216ed4 100%);
}

.hero-visual::before,
.kicker,
.eyebrow,
.product-info small,
.catalog-copy small {
    color: var(--blue);
}

.visual-orbit {
    border-color: rgba(43, 137, 201, .18);
}

.window-main,
.window-card,
.window-data {
    box-shadow: 0 28px 68px rgba(19, 55, 89, .14);
}

.ui-chart i:nth-child(4),
.window-data span i {
    background: var(--blue);
}

.business-grid,
.feature-grid,
.catalog-intro,
.scenario-list {
    border-color: var(--line);
}

.business-card {
    background: rgba(255, 255, 255, .58);
}

.business-card:hover {
    background: #0b2342;
}

.business-card a,
.catalog-item,
.scenario-row,
.process-track,
.process-step {
    border-color: var(--line);
}

.products-section {
    background: linear-gradient(128deg, #071b34 0%, #0a2444 62%, #0b2a4c 100%);
}

.product-card {
    background: rgba(12, 40, 73, .78);
    border-color: rgba(157, 205, 235, .19);
}

.product-card:hover {
    border-color: rgba(103, 186, 224, .72);
}

.product-info p {
    color: #a6b9ca;
}

.scenario-row:hover,
.catalog-item:hover {
    background: #edf4f9;
}

.process-section,
.solution-catalog,
.service-page,
.brand-story {
    background: #eff4f8;
}

.contact-banner {
    background: linear-gradient(120deg, #216ed4 0%, #2b82df 100%);
}

.contact-banner::after {
    border-color: rgba(190, 235, 249, .28);
}

.site-footer {
    background: #061a32;
}

.page-hero,
.detail-hero {
    background: linear-gradient(116deg, #f4f8fb 0%, #eaf2f8 100%);
}

.page-hero::after {
    border-color: #bdd5e7;
    box-shadow: 0 0 0 58px rgba(191, 215, 232, .25), 0 0 0 118px rgba(191, 215, 232, .13);
}

.catalog-visual,
.detail-visual.has-cover,
.solution-artwork,
.solution-thumbnail {
    background: linear-gradient(145deg, #edf5fa, #dbe8f1);
    border-color: #d2e1eb;
}

.solution-panel,
.inquiry-form {
    border-color: #d4e0e9;
}

.detail-content,
.contact-page,
.legal-page {
    background: #fff;
}

@media (max-width: 540px) {
    .main-nav {
        background: #f6f9fc;
    }
}