:root {
    --midnight: #071722;
    --navy: #102a3a;
    --gold: #c5a25f;
    --champagne: #e5d4b0;
    --ivory: #faf8f3;
    --white: #ffffff;
    --text-dark: #172028;
    --text-soft: #68727a;
    --border: #e8e5df;
    --verified: #268557;
    --ruby: #8f2434;
    --emerald: #1c6f56;
    --shadow: 0 24px 70px rgba(7, 23, 34, .16);
}

* { box-sizing: border-box; }
html, body { width: 100%; margin: 0; padding: 0; overflow-x: hidden; }
body {
    font-family: "Manrope", Arial, sans-serif;
    color: var(--text-dark);
    background: var(--ivory);
    line-height: 1.7;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
.sr-only, .skip-link {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}
.skip-link:focus {
    width: auto;
    height: auto;
    clip: auto;
    z-index: 1000;
    padding: 10px 14px;
    background: var(--white);
}
:focus-visible { outline: 3px solid var(--gold); outline-offset: 4px; }

.site-section { width: 100%; }
.section-inner {
    width: 100%;
    padding-left: clamp(20px, 5vw, 110px);
    padding-right: clamp(20px, 5vw, 110px);
}
h1, h2, h3 {
    font-family: "Cormorant Garamond", Georgia, serif;
    line-height: .98;
    letter-spacing: 0;
    margin: 0;
}
h1 { font-size: clamp(48px, 6.5vw, 105px); }
h2 { font-size: clamp(36px, 4vw, 70px); }
h3 { font-size: clamp(26px, 2.3vw, 42px); }
p { margin: 0 0 18px; color: var(--text-soft); }
.eyebrow {
    color: var(--gold);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .14em;
    text-transform: uppercase;
}

.site-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: 50;
    min-height: 104px;
    padding: 14px clamp(20px, 5vw, 110px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--white);
    transition: background .25s ease, box-shadow .25s ease, min-height .25s ease, color .25s ease;
}
.site-header.is-scrolled, .site-header.is-open {
    min-height: 92px;
    background: rgba(7, 23, 34, .94);
    color: var(--white);
    box-shadow: 0 10px 40px rgba(7, 23, 34, .18);
    backdrop-filter: blur(16px);
}
.brand {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 104px;
    height: 104px;
    padding: 8px;
    border-radius: 0 0 14px 14px;
    background: rgba(7, 23, 34, .94);
    border: 1px solid rgba(197,162,95,.32);
    box-shadow: 0 18px 46px rgba(7,23,34,.18);
}
.brand img { width: 90px; height: 90px; object-fit: contain; }
.site-nav { display: flex; align-items: center; gap: clamp(18px, 2.2vw, 36px); font-size: 13px; font-weight: 800; text-transform: uppercase; }
.nav-cta, .button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 22px;
    border-radius: 6px;
    border: 1px solid var(--gold);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .09em;
    text-transform: uppercase;
    cursor: pointer;
}
.button-primary, .nav-cta { background: var(--gold); color: var(--midnight); }
.button-secondary { color: var(--white); border-color: rgba(255,255,255,.42); }
.button-row { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 34px; }
.nav-toggle { display: none; background: transparent; border: 0; width: 44px; height: 44px; }
.nav-toggle span:not(.sr-only) { display: block; width: 24px; height: 2px; margin: 5px auto; background: currentColor; }

.hero-slider {
    position: relative;
    min-height: 88vh;
    color: var(--white);
    background: var(--midnight);
    overflow: hidden;
}
.hero-slide {
    position: absolute;
    inset: 0;
    min-height: 88vh;
    display: flex;
    align-items: center;
    background-position: center;
    background-size: cover;
    opacity: 0;
    transform: scale(1.02);
    transition: opacity .7s ease, transform 1.2s ease;
}
.hero-slide:before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(7,23,34,.9), rgba(7,23,34,.62) 48%, rgba(7,23,34,.24));
}
.hero-slide.is-active {
    position: relative;
    opacity: 1;
    transform: scale(1);
    z-index: 1;
}
.hero-slide-inner {
    position: relative;
    z-index: 2;
    padding-top: 110px;
    padding-bottom: 70px;
    max-width: 980px;
}
.hero-slide-inner p:not(.eyebrow) { max-width: 650px; color: rgba(255,255,255,.78); font-size: clamp(17px, 1.4vw, 21px); }
.hero-slider-controls {
    position: absolute;
    z-index: 3;
    left: clamp(20px, 5vw, 110px);
    bottom: 34px;
    display: flex;
    gap: 8px;
}
.hero-slider-controls button {
    width: 48px;
    height: 40px;
    border: 1px solid rgba(255,255,255,.36);
    background: rgba(255,255,255,.08);
    color: var(--white);
    border-radius: 4px;
    cursor: pointer;
    font-weight: 800;
}
.hero-slider-controls button.is-active { background: var(--gold); color: var(--midnight); border-color: var(--gold); }

.quick-verify, .verify-page { background: var(--white); }
.verify-strip {
    display: grid;
    grid-template-columns: .7fr 1.3fr;
    gap: 28px;
    align-items: end;
    padding-top: 34px;
    padding-bottom: 34px;
    border-bottom: 1px solid var(--border);
}
.verify-form label { display: block; margin-bottom: 8px; font-size: 12px; font-weight: 800; text-transform: uppercase; color: var(--text-dark); }
.verify-input-row {
    display: grid;
    grid-template-columns: minmax(170px, 1fr) minmax(160px, auto);
    gap: 10px;
}
.verify-input-row input[name="CertificateNo"] {
    grid-column: 1 / -1;
}
.verify-input-row input[name="Weight"] {
    min-width: 0;
}
.verify-form input {
    width: 100%;
    min-height: 52px;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0 15px;
    background: var(--white);
}
.verify-form button { min-height: 52px; min-width: 160px; padding: 0 20px; border: 0; border-radius: 6px; background: var(--midnight); color: var(--white); font-weight: 800; text-transform: uppercase; white-space: nowrap; }
.form-note { margin: 8px 0 0; font-size: 12px; }

.story-section, .services-band, .process-section, .contact-section, .report-page, .gemologist-section { background: var(--ivory); }
.split-layout {
    display: grid;
    grid-template-columns: .2fr .9fr .9fr;
    gap: clamp(28px, 4vw, 70px);
    align-items: center;
    padding-top: clamp(70px, 9vw, 130px);
    padding-bottom: clamp(70px, 9vw, 130px);
}
.section-kicker { color: var(--gold); font-weight: 800; text-transform: uppercase; }
.story-image { margin: 0; overflow: hidden; min-height: 360px; max-height: 460px; border-radius: 8px; }
.story-image img { width: 100%; height: 100%; object-fit: cover; }

.dark-feature, .verify-feature, .final-cta {
    background: var(--midnight);
    color: var(--white);
}
.dark-grid, .verify-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(30px, 5vw, 90px);
    align-items: center;
    padding-top: clamp(70px, 9vw, 130px);
    padding-bottom: clamp(70px, 9vw, 130px);
}
.dark-grid p, .verify-grid p, .footer p { color: rgba(255,255,255,.72); }
.dark-grid img { width: min(100%, 560px); justify-self: end; min-height: 320px; max-height: 430px; object-fit: cover; border-radius: 8px; border: 1px solid rgba(197,162,95,.35); }

.section-heading { display: grid; grid-template-columns: .4fr 1fr; gap: 24px; align-items: end; padding-top: clamp(70px, 8vw, 120px); }
.service-strips { padding: 45px 0 clamp(70px, 9vw, 130px); display: grid; gap: 22px; }
.service-strips article {
    display: grid;
    grid-template-columns: minmax(260px, 430px) 1fr;
    gap: clamp(24px, 4vw, 70px);
    align-items: center;
    padding: 22px 0;
    border-top: 1px solid var(--border);
}
.service-strips article:nth-child(even) img { order: 2; }
.service-strips img { width: 100%; aspect-ratio: 5 / 3.3; object-fit: cover; border-radius: 8px; box-shadow: 0 18px 46px rgba(7,23,34,.1); }
.service-strips span { color: var(--gold); font-weight: 800; }

.lab-section { display: grid; grid-template-columns: 1fr 1fr; background: var(--white); }
.lab-section figure { min-height: 470px; margin: 0; }
.lab-section img { width: 100%; height: 100%; object-fit: cover; }
.lab-copy { padding: clamp(55px, 7vw, 110px); align-self: center; }

.process-section .section-inner { padding-top: clamp(70px, 8vw, 120px); padding-bottom: clamp(70px, 8vw, 120px); }
.process-line { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; margin-top: 36px; border-top: 1px solid var(--gold); }
.process-line span { padding-top: 22px; font-weight: 800; text-transform: uppercase; }

.gemologist-section {
    background:
        linear-gradient(90deg, rgba(250,248,243,.96), rgba(250,248,243,.86)),
        url("../images/main-slider/Untitled-3.png") center/cover no-repeat;
}
.gemologist-grid {
    display: grid;
    grid-template-columns: .85fr 1.15fr;
    gap: clamp(28px, 5vw, 86px);
    align-items: start;
    padding-top: clamp(70px, 8vw, 120px);
    padding-bottom: clamp(70px, 8vw, 120px);
}
.gemologist-grid > div:first-child {
    max-width: 640px;
}
.gemologist-points {
    display: grid;
    gap: 12px;
}
.gemologist-points article {
    display: grid;
    grid-template-columns: 58px 180px 1fr;
    gap: 18px;
    align-items: start;
    padding: 22px 0;
    border-top: 1px solid rgba(197,162,95,.38);
}
.gemologist-points span {
    color: var(--gold);
    font-weight: 800;
}
.gemologist-points h3 {
    font-family: "Manrope", Arial, sans-serif;
    font-size: 17px;
    line-height: 1.3;
    text-transform: uppercase;
    color: var(--midnight);
}
.gemologist-points p {
    margin: 0;
}

.verify-feature .verify-form input { background: rgba(255,255,255,.08); color: var(--white); border-color: rgba(255,255,255,.24); }
.verify-feature .verify-form label { color: var(--champagne); }
.verify-feature .verify-form button { background: var(--gold); color: var(--midnight); }

.final-cta .section-inner { min-height: 360px; display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-top: 70px; padding-bottom: 70px; }

.page-hero {
    padding-top: 150px;
    padding-bottom: 70px;
    background: linear-gradient(110deg, rgba(7,23,34,.94), rgba(16,42,58,.72)), url("../images/page/Gemstones.jpg") center/cover no-repeat;
    color: var(--white);
}
.page-hero p { max-width: 760px; color: rgba(255,255,255,.76); }
.compact-hero { padding-bottom: 46px; }
.verify-page-grid { display: grid; grid-template-columns: 380px 1fr; gap: 34px; padding-top: 60px; padding-bottom: 90px; align-items: start; }
.verify-card, .report-card, .premium-certificate, .report-state {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: clamp(24px, 4vw, 46px);
    box-shadow: 0 18px 60px rgba(7,23,34,.08);
}
.verify-card .verify-input-row {
    grid-template-columns: 1fr;
}
.verify-card .verify-form button {
    width: 100%;
}
.verification-result:empty { display: none; }
.report-card { max-width: 1120px; margin: 0 auto; }
.premium-certificate {
    max-width: 1120px;
    margin: 0 auto;
    padding: clamp(20px, 2.8vw, 34px);
    background:
        radial-gradient(circle at top left, rgba(197,162,95,.42), transparent 34%),
        linear-gradient(135deg, rgba(197,162,95,.22), rgba(255,255,255,.82)),
        var(--ivory);
    border: 1px solid rgba(197,162,95,.45);
    box-shadow: 0 34px 96px rgba(7,23,34,.2);
}
.certificate-ribbon {
    display: flex;
    justify-content: space-between;
    gap: 18px;
    align-items: center;
    padding: 14px 18px;
    background: var(--midnight);
    color: var(--white);
    border-radius: 6px 6px 0 0;
    text-transform: uppercase;
    font-weight: 800;
}
.certificate-ribbon span:before {
    content: "";
    display: inline-block;
    width: 10px;
    height: 10px;
    margin-right: 9px;
    border-radius: 50%;
    background: var(--verified);
}
.certificate-paper {
    position: relative;
    overflow: hidden;
    padding: clamp(42px, 5.6vw, 88px);
    background:
        linear-gradient(rgba(255,255,255,.91), rgba(255,255,255,.95)),
        url("../images/Certificate Image.jpg") center/contain no-repeat,
        #fffdf8;
    border: 1px solid rgba(197,162,95,.7);
    border-top: 0;
}
.certificate-paper:before {
    content: "";
    position: absolute;
    inset: 18px;
    border: 1px solid rgba(197,162,95,.35);
    pointer-events: none;
}
.certificate-paper:after {
    content: "SURBHI GTL";
    position: absolute;
    right: 34px;
    bottom: 26px;
    font-family: "Cormorant Garamond", Georgia, serif;
    font-size: clamp(44px, 8vw, 118px);
    color: rgba(197,162,95,.08);
    letter-spacing: 0;
    line-height: 1;
}
.certificate-heading {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 72px 1fr;
    gap: 22px;
    align-items: center;
    padding-bottom: 28px;
    border-bottom: 1px solid rgba(197,162,95,.4);
}
.certificate-heading img { width: 72px; height: 72px; object-fit: contain; }
.certificate-heading h2 { font-size: clamp(34px, 4.4vw, 66px); color: var(--midnight); }
.certificate-body { position: relative; z-index: 1; padding-top: 30px; }
.certificate-summary {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 20px;
}
.certificate-footer-line {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: space-between;
    gap: 20px;
    margin-top: 30px;
    padding-top: 18px;
    border-top: 1px solid rgba(197,162,95,.45);
    color: var(--text-soft);
    font-size: 13px;
    text-transform: uppercase;
    font-weight: 800;
}
.report-status { display: flex; justify-content: space-between; gap: 18px; padding-bottom: 20px; border-bottom: 1px solid var(--border); color: var(--verified); text-transform: uppercase; font-weight: 800; }
.report-title { padding: 32px 0; }
.report-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.report-field { padding: 16px; border: 1px solid var(--border); border-radius: 6px; background: #fffdf9; }
.certificate-summary .report-field {
    background: linear-gradient(135deg, #fffef9, #f7efe0);
    border-color: rgba(197,162,95,.46);
}
.report-field span { display: block; font-size: 11px; color: var(--text-soft); text-transform: uppercase; font-weight: 800; }
.report-field strong { display: block; margin-top: 4px; color: var(--text-dark); }
.report-comments { margin-top: 22px; padding-top: 22px; border-top: 1px solid var(--border); }
.report-state { text-align: center; max-width: 760px; margin: 0 auto; }
.report-error h1, .report-error h2 { color: var(--ruby); }
.contact-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 30px; padding-top: 70px; padding-bottom: 90px; }
.contact-grid iframe { width: 100%; min-height: 520px; border: 0; border-radius: 8px; }
.service-copy { padding-top: 70px; padding-bottom: 100px; max-width: 980px; }

.footer { background: #050f16; color: var(--white); }
.footer-grid { display: grid; grid-template-columns: 1.2fr .7fr .9fr 1fr; gap: 34px; padding-top: 70px; padding-bottom: 45px; }
.footer-logo { width: 118px; margin-bottom: 18px; background: rgba(255,255,255,.06); border: 1px solid rgba(197,162,95,.22); padding: 8px; border-radius: 8px; }
.footer h2 { font-family: "Manrope", Arial, sans-serif; font-size: 13px; line-height: 1.4; text-transform: uppercase; color: var(--champagne); }
.footer a, .footer p { display: block; margin: 8px 0; font-size: 14px; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 22px; padding-bottom: 26px; border-top: 1px solid rgba(255,255,255,.12); color: rgba(255,255,255,.65); }

.reveal { opacity: 0; transform: translateY(22px); transition: opacity .65s ease, transform .65s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 900px) {
    .nav-toggle { display: block; }
    .site-nav {
        position: fixed;
        inset: 72px 0 auto;
        display: grid;
        gap: 0;
        padding: 16px 20px 26px;
        background: rgba(250,248,243,.98);
        color: var(--midnight);
        transform: translateY(-130%);
        transition: transform .25s ease;
        box-shadow: var(--shadow);
    }
    .site-header.is-open .site-nav { transform: translateY(0); }
    .site-nav a { padding: 16px 0; border-bottom: 1px solid var(--border); }
    .nav-cta { margin-top: 12px; }
    .verify-strip, .split-layout, .dark-grid, .verify-grid, .lab-section, .verify-page-grid, .contact-grid, .footer-grid, .gemologist-grid { grid-template-columns: 1fr; }
    .hero-slide, .hero-slider { min-height: 78vh; }
    .hero-slide:before { background: linear-gradient(90deg, rgba(7,23,34,.94), rgba(7,23,34,.72)); }
    .hero-slide-inner { padding-top: 100px; padding-bottom: 90px; }
    .service-strips article, .service-strips article:nth-child(even) img { grid-template-columns: 1fr; order: initial; }
    .section-heading { grid-template-columns: 1fr; }
    .process-line { grid-template-columns: 1fr; border-top: 0; border-left: 1px solid var(--gold); padding-left: 20px; }
    .process-line span { padding: 12px 0; }
    .final-cta .section-inner { align-items: flex-start; flex-direction: column; }
    .verify-input-row { grid-template-columns: 1fr; }
    .certificate-summary { grid-template-columns: 1fr; }
    .certificate-heading { grid-template-columns: 56px 1fr; }
    .certificate-heading img { width: 56px; height: 56px; }
    .gemologist-points article { grid-template-columns: 42px 1fr; }
    .gemologist-points article p { grid-column: 2; }
}

@media (max-width: 520px) {
    .site-header { min-height: 72px; padding-top: 12px; padding-bottom: 12px; }
    .brand { width: 82px; height: 82px; }
    .brand img { width: 70px; height: 70px; }
    .hero-slide, .hero-slider { min-height: 72vh; }
    .button { width: 100%; }
    .report-grid { grid-template-columns: 1fr; }
    .report-status { display: grid; }
    .certificate-ribbon, .certificate-footer-line { display: grid; }
    .certificate-paper { padding: 24px 18px; }
    .certificate-paper:before { inset: 10px; }
    .footer-bottom { flex-direction: column; }
}

@media print {
    .site-header, .footer, .button, .quick-verify { display: none !important; }
    body { background: white; }
    .report-card { box-shadow: none; border-color: #ccc; }
}