*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

:root{
    --bg-cream:#F6F1E8;
    --bg-soft:#FBF8F2;
    --forest:#1F3328;
    --forest-2:#2D4638;
    --olive:#5D6F52;
    --brown:#7A5137;
    --gold:#B79B62;
    --text:#233126;
    --text-soft:#5E655B;
    --white:#FFFFFF;
    --shadow:0 12px 32px rgba(0,0,0,0.12);
}

html{
    scroll-behavior:smooth;
    overflow-x:hidden;
}

body{
    font-family:Inter, Arial, sans-serif;
    background:var(--bg-cream);
    color:var(--text);
    line-height:1.75;
}

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

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

.div_link{
    text-decoration:none;
    color:inherit;
}

.section-inner{
    width:min(1200px, 92%);
    margin:0 auto;
}

.btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    min-width:150px;
    padding:14px 24px;
    border-radius:999px;
    border:1.5px solid transparent;
    font-size:0.95rem;
    font-weight:600;
    letter-spacing:.04em;
    transition:all .28s ease;
}

.btn-primary{
    background:var(--forest);
    color:var(--white);
}

.btn-primary:hover{
    background:var(--forest-2);
    transform:translateY(-2px);
}

.btn-outline{
    border-color:var(--forest);
    color:var(--forest);
    background:transparent;
}

.btn-outline:hover{
    background:var(--forest);
    color:var(--white);
    transform:translateY(-2px);
}

/* Navigation */
.guidBarFrameWork{
    width:100%;
    height:78px;
    position:fixed;
    top:0;
    left:0;
    z-index:20;
    background:rgba(17,30,22,0.88);
    backdrop-filter:blur(10px);
    border-bottom:1px solid rgba(255,255,255,0.08);
}

.nav-inner{
    width:min(1240px, 94%);
    height:100%;
    margin:0 auto;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:24px;
}

.guideBarLogo{
    width:158px;
    height:48px;
    display:flex;
    align-items:center;
    flex-shrink:0;
}

.guideBarLogo img{
    width:100%;
    height:100%;
    object-fit:contain;
}

.buttonOuter,
.buttonInter1,
.buttonInter2{
    position:static;
    width:auto;
    height:auto;
}

.buttonOuter{
    display:flex;
    align-items:center;
    gap:18px;
}

.buttonInter1,
.buttonInter2{
    display:flex;
    align-items:center;
    gap:8px;
}

.guideBarButton1,
.guideBarButton2{
    background:transparent;
    color:rgba(255,255,255,0.92);
    width:auto;
    height:auto;
    padding:12px 16px;
    font-size:14px;
    letter-spacing:1.4px;
    font-weight:600;
    border-radius:999px;
    position:relative;
    transition:color .25s ease, background .25s ease;
}

.guideBarButtonText1,
.guideBarButtonText2{
    margin:0;
}

.guideBarButton1::after,
.guideBarButton2::after{
    content:"";
    position:absolute;
    left:16px;
    right:16px;
    bottom:8px;
    height:2px;
    background:var(--gold);
    transform:scaleX(0);
    transform-origin:center;
    transition:transform .25s ease;
}

.guideBarButton1:hover,
.guideBarButton2:hover{
    color:#DDE8D6;
    background:rgba(255,255,255,0.05);
}

.guideBarButton1:hover::after,
.guideBarButton2:hover::after{
    transform:scaleX(1);
}

/* Hero */
.headerImage{
    width:100%;
}

.headerImageFrame{
    min-height:100vh;
    position:relative;
    overflow:hidden;
    display:flex;
    align-items:center;
}

.BirdsPageHeaderImage{
    position:absolute;
    inset:0;
    width:100%;
    height:100%;
    object-fit:cover;
    object-position:40% 55%;
    transform:scale(1.25);
}

.headerImageOverlay{
    position:absolute;
    inset:0;
    background:
        linear-gradient(
            90deg,
            rgba(18,30,24,0.58) 0%,
            rgba(18,30,24,0.28) 45%,
            rgba(18,30,24,0.10) 100%
        );
}

.headerImageContentBox{
    width:min(760px, 90%);
    position:relative;
    z-index:2;
    margin-left:max(4vw, 32px);
    padding-top:88px;
}

.hero-eyebrow{
    display:inline-block;
    margin-bottom:16px;
    color:#E6D4A5;
    font-size:.92rem;
    letter-spacing:2px;
    text-transform:uppercase;
    font-weight:700;
}

.PageTitle{
    font-family:"Cormorant Garamond", Georgia, serif;
    font-size:clamp(3rem, 7vw, 4.8rem);
    line-height:1.05;
    color:var(--white);
    margin-bottom:18px;
    max-width:720px;
}

.classDescription{
    width:min(680px, 100%);
    font-size:clamp(1.08rem, 2vw, 1.35rem);
    color:rgba(255,255,255,0.92);
    line-height:1.65;
}

.hero-actions{
    display:flex;
    flex-wrap:wrap;
    gap:14px;
    margin-top:30px;
}

.hero-actions .btn-outline{
    border-color:rgba(255,255,255,0.75);
    color:var(--white);
}

.hero-actions .btn-outline:hover{
    background:rgba(255,255,255,0.12);
    border-color:rgba(255,255,255,0.95);
}

/* Intro */
.homePageIntroductionSectionFrameWork{
    padding:110px 0;
    background:var(--bg-soft);
}

.about-grid{
    width:min(1220px, 92%);
    margin:0 auto;
    display:grid;
    grid-template-columns:1.02fr .98fr;
    align-items:center;
    gap:54px;
}

.intro-grid-compact{
    grid-template-columns:1fr 1fr;
    gap:42px;
}

.homePageIntroductionSectionImage{
    width:100%;
    min-height:620px;
    border-radius:28px;
    background:url(ResearchPageImage/IntroductionImage2.png) center/cover no-repeat;
    box-shadow:var(--shadow);
}

.homePageIntroductionSectionTextOuter{
    width:100%;
}

.homePageIntroductionSectionTextTitle{
    margin-bottom:20px;
}

.intro-title-compact{
    margin-bottom:26px;
}

.kicker{
    color:var(--gold);
    font-size:.95rem;
    letter-spacing:2px;
    text-transform:uppercase;
    font-weight:700;
    margin-bottom:14px;
}

.homePageIntroductionSectionTextTitle h2{
    font-family:"Cormorant Garamond", Georgia, serif;
    font-size:clamp(2.2rem, 4vw, 3.1rem);
    line-height:1.1;
    color:var(--forest);
    margin-bottom:0;
}

.homePageIntroductionSectionText{
    line-height:1.9;
    font-size:1.03rem;
    color:var(--text);
}

.homePageIntroductionSectionTextLink{
    display:inline-block;
    margin-top:28px;
}

/* Research sections */
.researchSectionFrame{
    padding:110px 0;
    background:var(--bg-cream);
}

.researchSectionAlt{
    background:var(--bg-soft);
}

.research-grid{
    width:min(1200px, 92%);
    margin:0 auto;
    display:grid;
    grid-template-columns:.9fr 1.1fr;
    gap:30px;
    align-items:stretch;
}

.research-grid.reverse{
    grid-template-columns:1.1fr .9fr;
}

.research-text-card{
    background:#EFE7D7;
    border-radius:30px;
    padding:46px 40px;
    box-shadow:var(--shadow);
}

.light-card{
    background:#F7F2E8;
}

.section-tag{
    color:var(--gold);
    font-size:.88rem;
    font-weight:700;
    letter-spacing:1.8px;
    text-transform:uppercase;
    margin-bottom:14px;
}

.research-main-title{
    font-family:"Cormorant Garamond", Georgia, serif;
    font-size:clamp(2.2rem, 4vw, 3rem);
    color:var(--forest);
    line-height:1.12;
    margin-bottom:12px;
}

.research-sub-title{
    font-size:1.03rem;
    color:var(--text-soft);
    margin-bottom:28px;
}

.research-main-text{
    font-size:1rem;
    color:var(--text);
    line-height:1.9;
}

.research-image-panel{
    min-height:620px;
    border-radius:30px;
    position:relative;
    overflow:hidden;
    box-shadow:var(--shadow);
}

.mammal-image{
    background:
        linear-gradient(rgba(18,30,24,0.06), rgba(18,30,24,0.20)),
        url("ResearchPageImage/MammalResearch.jpg")
        43% 48% / cover
        no-repeat;
}

.insect-image{
    background:
        linear-gradient(rgba(18,30,24,0.03), rgba(18,30,24,0.12)),
        url("ResearchPageImage/ResearchInsect.jpg") 
        center center / 115% no-repeat;
}

.image-overlay-card{
    position:absolute;
    right:24px;
    bottom:24px;
    width:min(350px, calc(100% - 48px));
    background:rgba(17,30,22,0.78);
    color:var(--white);
    padding:20px 22px;
    border-radius:20px;
    backdrop-filter:blur(8px);
}

.image-overlay-card h4{
    font-family:"Cormorant Garamond", Georgia, serif;
    font-size:1.7rem;
    margin-bottom:8px;
}

.image-overlay-card p{
    color:rgba(255,255,255,0.86);
    font-size:.98rem;
    line-height:1.7;
}

/* Open Invitation CTA */
.research-cta-section{
    padding: 0 0 110px;
    background: var(--bg-soft);
}

.research-cta-card{
    width: min(1120px, 92%);
    margin: 0 auto;
    padding: 56px 48px;
    border-radius: 34px;

    background:
        linear-gradient(135deg, rgba(31,51,40,0.96) 0%, rgba(45,70,56,0.94) 100%),
        url("ResearchPageImage/sample.JPG") center/cover no-repeat;

    color: var(--white);
    text-align: center;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.research-cta-card::before{
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        rgba(0,0,0,0.06) 0%,
        rgba(0,0,0,0.18) 100%
    );
    pointer-events: none;
}

.research-cta-card > *{
    position: relative;
    z-index: 1;
}

.research-cta-card .kicker{
    color: #E6D4A5;
    margin-bottom: 16px;
}

.research-cta-card h2{
    font-family: "Cormorant Garamond", Georgia, serif;
    font-size: clamp(2.2rem, 4vw, 3.35rem);
    line-height: 1.08;
    max-width: 860px;
    margin: 0 auto 18px;
    color: var(--white);
}

.research-cta-card p{
    max-width: 820px;
    margin: 0 auto;
    color: rgba(255,255,255,0.84);
    line-height: 1.9;
    font-size: 1.02rem;
}

.research-cta-actions{
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 34px;
}

.research-cta-card .btn-primary{
    background: var(--white);
    color: var(--forest);
}

.research-cta-card .btn-primary:hover{
    background: #F2ECE2;
}

.research-cta-card .btn-outline{
    border-color: rgba(255,255,255,0.72);
    color: var(--white);
}

.research-cta-card .btn-outline:hover{
    background: rgba(255,255,255,0.12);
    border-color: rgba(255,255,255,0.95);
}

@media screen and (max-width: 820px){
    .research-cta-section{
        padding-bottom: 84px;
    }

    .research-cta-card{
        padding: 42px 28px;
        border-radius: 28px;
    }

    .research-cta-card h2{
        font-size: clamp(2rem, 7vw, 2.7rem);
    }

    .research-cta-card p{
        font-size: 0.98rem;
    }
}

/* Footer */
.footerFrame{
    width:100%;
    background:linear-gradient(180deg, #101913 0%, #16231B 100%);
    padding:72px 0 48px;
    border-top:1px solid rgba(183,155,98,0.28);
}

.footer-inner{
    width:min(1200px, 92%);
    margin:0 auto;
    display:grid;
    grid-template-columns:1.1fr .7fr .95fr;
    gap:36px;
}

.footerLogo{
    width:205px;
    height:88px;
    margin-bottom:18px;
}

.footerLogo img{
    width:100%;
    height:100%;
    object-fit:contain;
}

.footerLogoText{
    color:rgba(255,255,255,0.8);
    font-size:1rem;
}

.footer-about p{
    color:rgba(255,255,255,0.8);
    max-width:360px;
    margin-top:14px;
}

.footer-col h4{
    font-family:"Cormorant Garamond", Georgia, serif;
    font-size:2rem;
    color:var(--white);
    margin-bottom:16px;
}

.footer-links a,
.footer-contact p{
    display:block;
    color:rgba(255,255,255,0.8);
    margin-bottom:12px;
    line-height:1.8;
}

.footer-links a:hover{
    color:#E3D0A1;
}

.footer-socials{
    display:flex;
    gap:14px;
    margin-top:18px;
}

.footerContactLinkbuttton{
    width:48px;
    height:48px;
    display:flex;
    align-items:center;
    justify-content:center;
    border-radius:50%;
    background:rgba(255,255,255,0.06);
    transition:transform .25s ease, background .25s ease;
}

.footerContactLinkbuttton:hover{
    transform:translateY(-2px) scale(1.05);
    background:rgba(183,155,98,0.2);
}


/* optional: keep footer logo and icons exactly like homepage sizing */
.footerLogo img{
    width:100%;
    height:100%;
    object-fit:contain;
}

.footerContactLogo{
    width:22px;
    height:22px;
    object-fit:contain;
}

.footer-bottom{
    width:min(1200px, 92%);
    margin:32px auto 0;
    padding-top:24px;
    border-top:1px solid rgba(255,255,255,0.08);
    color:rgba(255,255,255,0.62);
    font-size:.95rem;
}

/* Responsive */
@media screen and (max-width:1080px){
    .about-grid,
    .intro-grid-compact,
    .research-grid,
    .research-grid.reverse,
    .footer-inner{
        grid-template-columns:1fr;
    }

    .homePageIntroductionSectionImage,
    .research-image-panel{
        min-height:420px;
    }
}

@media screen and (max-width:820px){
    .guidBarFrameWork{
        height:auto;
        padding:14px 0;
    }

    .nav-inner,
    .buttonOuter{
        flex-direction:column;
        align-items:flex-start;
    }

    .buttonInter1,
    .buttonInter2{
        flex-wrap:wrap;
    }

    .headerImageFrame{
        min-height:820px;
    }

    .headerImageContentBox{
        margin-left:24px;
        width:calc(100% - 48px);
    }
}

@media screen and (max-width:560px){
    .guideBarButton1,
    .guideBarButton2{
        padding:10px 12px;
        font-size:13px;
    }

    .homePageIntroductionSectionFrameWork,
    .researchSectionFrame{
        padding:84px 0;
    }

    .homePageIntroductionSectionImage,
    .research-image-panel{
        min-height:280px;
    }

    .research-text-card{
        padding:30px 24px;
    }
}