/* ScreenSizeCalc
   Homepage design stylesheet
   No page-specific inline styles are required. */

:root {
    --ink: #162033;
    --muted: #68758a;
    --line: #e4e9f1;
    --surface: #ffffff;
    --surface-soft: #f6f8fb;
    --brand: #2457e6;
    --brand-dark: #173fae;
    --accent: #16a39a;
    --shadow: 0 16px 45px rgba(28, 44, 74, .08);
    --shadow-soft: 0 8px 25px rgba(28, 44, 74, .06);
    --radius: 18px;
}

html { scroll-behavior: smooth; }
body {
    margin: 0;
    color: var(--ink);
    background: var(--surface);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
a:hover { color: inherit; }

.skip-link {
    position: absolute;
    left: -9999px;
    top: 8px;
    z-index: 9999;
    padding: 10px 14px;
    background: #111827;
    color: #fff;
    border-radius: 8px;
}
.skip-link:focus { left: 8px; }

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255,255,255,.96);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(12px);
}
.navbar { min-height: 72px; }
.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.12rem;
    letter-spacing: -.03em;
    text-decoration: none;
}
.brand-accent { color: var(--brand); }
.brand-mark {
    display: grid;
    grid-template-columns: repeat(2, 7px);
    grid-template-rows: repeat(2, 7px);
    gap: 3px;
    width: 24px;
    height: 24px;
    padding: 3px;
    border-radius: 7px;
    background: var(--brand);
}
.brand-mark span {
    display: block;
    background: #fff;
    border-radius: 1px;
}
.nav-link {
    color: #526075;
    font-size: .94rem;
    font-weight: 600;
    padding: 9px 11px !important;
}
.nav-link:hover, .nav-link.active { color: var(--brand); }
.dropdown-menu {
    border: 1px solid var(--line);
    border-radius: 13px;
    box-shadow: var(--shadow);
    padding: 8px;
}
.dropdown-item {
    border-radius: 8px;
    padding: 8px 11px;
    font-size: .92rem;
}
.dropdown-item:hover { background: #f0f4ff; color: var(--brand); }

.hero-section {
    padding: 50px 0 0px;
    background:
        radial-gradient(circle at 10% 0%, rgba(36,87,230,.06), transparent 34%),
        radial-gradient(circle at 90% 15%, rgba(22,163,154,.055), transparent 28%),
        #fff;
}
.ad-slot {
    min-height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px dashed #d8dee8;
    background: #fbfcfe;
    color: #9aa5b5;
    font-size: .7rem;
    letter-spacing: .08em;
    text-transform: uppercase;
}
.ad-slot-top { margin-bottom: 52px; }
.ad-slot-lower { min-height: 120px; }
.eyebrow, .section-kicker {
    display: inline-block;
    color: var(--brand);
    font-size: .74rem;
    font-weight: 800;
    letter-spacing: .13em;
    text-transform: uppercase;
}
.hero-copy { max-width: 800px; margin: 0 auto 30px; }
.hero-copy h1 {
    margin: 7px 0 13px;
    font-size: clamp(2.15rem, 4.5vw, 3.65rem);
    line-height: 1.05;
    letter-spacing: -.055em;
    font-weight: 800;
}
.hero-lead {
    max-width: 680px;
    margin: 0 auto;
    color: var(--muted);
    font-size: 1.08rem;
}

.calculator-shell {
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 22px;
    background: #fff;
    box-shadow: var(--shadow);
	margin-top: 40px;
}
.calculator-header {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    align-items: center;
    padding: 24px 28px;
    border-bottom: 1px solid var(--line);
    background: #fbfcff;
}
.calculator-header h2, .result-heading h3 {
    margin: 2px 0 0;
    font-size: 1.22rem;
    letter-spacing: -.02em;
}
.tool-badge, .result-status {
    padding: 6px 10px;
    border-radius: 999px;
    background: #edf8f6;
    color: #087f77;
    font-size: .75rem;
    font-weight: 700;
    white-space: nowrap;
}
.calculator-form { padding: 28px; }
.calculator-form label {
    display: block;
    margin-bottom: 7px;
    color: #36445a;
    font-size: .86rem;
    font-weight: 700;
}
.calculator-form label span { color: #8a95a5; font-weight: 500; }
.form-row { margin-bottom: 18px; }
.form-control, .form-select {
    border-color: #d9e0ea;
    border-radius: 11px;
    color: var(--ink);
    box-shadow: none;
}
.form-control:focus, .form-select:focus {
    border-color: #7c9af2;
    box-shadow: 0 0 0 .2rem rgba(36,87,230,.09);
}
.input-group .form-control { border-radius: 11px 0 0 11px; }
.input-group .form-select {
    max-width: 125px;
    border-radius: 0 11px 11px 0;
}
.calculator-button {
    margin-top: 22px;
    border: 0;
    border-radius: 11px;
    background: var(--brand);
    font-weight: 700;
    box-shadow: 0 8px 20px rgba(36,87,230,.16);
}
.calculator-button:disabled { opacity: .65; }
.form-note {
    margin: 10px 0 0;
    color: #8a95a5;
    font-size: .76rem;
    text-align: center;
}
.screen-preview {
    height: 100%;
    min-height: 420px;
    padding: 28px;
    background: linear-gradient(145deg, #f7f9fc, #eef3fb);
    border-left: 1px solid var(--line);
}
.preview-stage {
    min-height: 330px;
    display: grid;
    place-items: center;
}
.screen-frame {
    position: relative;
    width: min(76%, 390px);
    aspect-ratio: 16 / 9;
    padding: 9px;
    border: 5px solid #26354c;
    border-radius: 14px;
    background: #26354c;
    box-shadow: 0 18px 35px rgba(31,46,70,.18);
}
.screen-inner {
    height: 100%;
    display: grid;
    place-items: center;
    border-radius: 6px;
    background:
        linear-gradient(135deg, rgba(36,87,230,.2), rgba(22,163,154,.12)),
        #e9eef8;
}
.screen-label { color: #6a7890; font-size: 1rem; font-weight: 800; }
.dimension {
    position: absolute;
    color: #5f6c80;
    font-size: .68rem;
    font-weight: 700;
    white-space: nowrap;
}
.dimension-width { left: 50%; bottom: -31px; transform: translateX(-50%); }
.dimension-height { right: -49px; top: 50%; transform: translateY(-50%) rotate(90deg); }
.dimension-diagonal { left: -56px; top: 50%; transform: translateY(-50%) rotate(-45deg); }
.preview-caption { display: flex; flex-direction: column; gap: 3px; text-align: center; }
.preview-caption strong { font-size: .91rem; }
.preview-caption span { color: var(--muted); font-size: .78rem; }

.result-preview {
    padding: 24px 28px 28px;
    border-top: 1px solid var(--line);
    background: #fff;
}
.result-heading {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}
.result-card {
    min-height: 82px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 14px 16px;
    border: 1px solid var(--line);
    border-radius: 13px;
    background: #fbfcfe;
}
.result-card span { color: var(--muted); font-size: 1rem; }
.result-card strong { margin-top: 3px; font-size: 1.15rem; }

.section-pad { padding: 40px 0; }
.section-muted { background: var(--surface-soft); }
.section-intro, .explain-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: end;
    margin-bottom: 35px;
}
.section-intro h2, .section-heading h2, .explain-grid h2 {
    margin: 5px 0 0;
    font-size: clamp(1.8rem, 3vw, 2.55rem);
    line-height: 1.12;
    letter-spacing: -.04em;
}
.section-intro p, .section-heading p, .explain-copy p {
    margin: 0;
    color: var(--muted);
    max-width: 560px;
}
.comparison-card {
    min-height: 360px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 55px;
    padding: 45px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: #fff;
    box-shadow: var(--shadow-soft);
}
.comparison-screen {
    position: relative;
    width: 31%;
    max-width: 330px;
    aspect-ratio: 16 / 9;
    display: grid;
    place-items: center;
    border: 7px solid #26354c;
    border-radius: 12px;
    background: #edf2fa;
    color: #65738a;
    font-size: .9rem;
    font-weight: 800;
}
.comparison-b { width: 40%; aspect-ratio: 16 / 9; }
.comparison-vs {
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    border: 1px solid var(--line);
    border-radius: 50%;
    background: #fff;
    color: var(--brand);
    font-size: .72rem;
    font-weight: 800;
    box-shadow: var(--shadow-soft);
}
.section-heading { max-width: 680px; margin-bottom: 34px; }
.section-heading p { margin-top: 12px; }
.tool-card {
    min-height: 106px;
    display: grid;
    grid-template-columns: 45px 1fr 20px;
    gap: 13px;
    align-items: center;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 15px;
    background: #fff;
    text-decoration: none;
    box-shadow: 0 4px 16px rgba(28,44,74,.035);
    transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.tool-card:hover { transform: translateY(-2px); border-color: #cbd6ed; box-shadow: var(--shadow-soft); }
.tool-icon {
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    border-radius: 11px;
    background: #eef3ff;
    color: var(--brand);
    font-size: .78rem;
    font-weight: 800;
}
.tool-card strong { display: block; font-size: .92rem; }
.tool-card small { display: block; margin-top: 3px; color: var(--muted); font-size: .90rem; line-height: 1.45; }
.tool-arrow { color: #94a0b1; font-size: 1.1rem; }

.category-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}
.category-link {
    min-height: 105px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 19px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: #fff;
    text-decoration: none;
}
.category-link:hover { border-color: #c5d2ec; background: #fbfcff; }
.category-link strong { font-size: .91rem; }
.category-link span { margin-top: 4px; color: var(--muted); font-size: .90rem; }

.quick-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.quick-links a {
    padding: 10px 15px;
    border: 1px solid #dbe2ec;
    border-radius: 999px;
    background: #fff;
    color: #46546a;
    font-size: .86rem;
    font-weight: 650;
    text-decoration: none;
}
.quick-links a:hover { border-color: #aebfe5; color: var(--brand); }

.explain-section { background: #fff; }
.explain-grid { align-items: start; margin-bottom: 0; }
.explain-copy p + p { margin-top: 13px; }
.text-link {
    display: inline-flex;
    gap: 8px;
    margin-top: 10px;
    color: var(--brand);
    font-weight: 750;
    text-decoration: none;
}
.text-link:hover { text-decoration: underline; }
.lower-ad-wrap { padding-bottom: 70px; }

.site-footer {
    padding: 58px 0 25px;
    background: #f6f8fb;
    color: #0e0e0e;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 45px;
}
.footer-brand { color: #fff; }
.footer-description { max-width: 300px; margin: 14px 0 0; color: #333; font-size: .82rem; }
.site-footer h2 { margin: 0 0 12px; font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li + li { margin-top: 7px; }
.site-footer a { color: #333; text-decoration: none; font-size: .8rem; }
.site-footer a:hover { color: #000; }
.footer-bottom {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    margin-top: 45px;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,.1);
    color: #333;
    font-size: .73rem;
}

@media (max-width: 991.98px) {
    .site-header { position: relative; }
    .navbar { min-height: 66px; }
    .navbar-collapse { padding: 12px 0 16px; }
    .dropdown-menu { box-shadow: none; border: 0; background: #f7f9fc; }
    .hero-section { padding-bottom: 0px; }
    .ad-slot-top { margin-bottom: 38px; }
    .calculator-header { padding: 20px; }
    .calculator-form { padding: 22px; }
    .screen-preview { border-left: 0; border-top: 1px solid var(--line); min-height: 390px; }
    .section-intro, .explain-grid { grid-template-columns: 1fr; gap: 14px; }
    .category-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 767.98px) {
    .hero-copy h1 { font-size: 2.3rem; }
    .hero-lead { font-size: .98rem; }
    .calculator-header { align-items: flex-start; }
    .screen-frame { width: min(78%, 340px); }
    .comparison-card { min-height: 270px; gap: 18px; padding: 25px 15px; }
    .comparison-screen { width: 37%; border-width: 5px; }
    .comparison-b { width: 47%; }
    .comparison-vs { width: 36px; height: 36px; font-size: .62rem; }
    .category-grid { grid-template-columns: 1fr; }
    .section-pad { padding: 65px 0; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px 20px; }
    .footer-bottom { flex-direction: column; gap: 6px; }
}

@media (max-width: 480px) {
    .ad-slot { min-height: 70px; }
    .calculator-header, .calculator-form, .result-preview { padding-left: 17px; padding-right: 17px; }
    .input-group .form-select { max-width: 105px; }
    .screen-preview { padding: 18px; }
    .preview-stage { min-height: 275px; }
    .screen-frame { width: 76%; }
    .dimension-height { right: -40px; }
    .dimension-diagonal { left: -46px; }
    .footer-grid { grid-template-columns: 1fr; }
}
.calculator-actions {
    display: flex;
flex-wrap: wrap;
justify-content: center;
gap: 10px;
margin-top: 20px;
}
/* Screen comparison */

.comparison-section .comparison-card {
    display: block;
    width: 100%;
    min-height: 0;
    margin: 0;
    padding: 32px;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: #fff;
    overflow: hidden;
}

.comparison-form {
    width: 100%;
}

.comparison-input-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    align-items: stretch;
    gap: 24px;
}

.comparison-panel {
    min-width: 0;
    padding: 24px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: #fff;
}

.comparison-panel-heading {
    margin-bottom: 22px;
}

.comparison-panel-heading h3 {
    margin: 4px 0 0;
    font-size: 1.2rem;
}

.comparison-label {
    display: inline-block;
    font-size: 0.88rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--primary);
}

.comparison-field {
    margin-bottom: 18px;
}

.comparison-field label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
}

.comparison-field .input-group {
    display: flex;
    width: 100%;
}

.comparison-field .input-group .form-control {
    min-width: 0;
}

.comparison-field .unit-select {
    flex: 0 0 115px;
}

.custom-comparison-ratio {
    margin-top: 4px;
    padding: 14px;
    border-radius: 10px;
    background: var(--surface-muted, #f7f9fc);
}

.custom-ratio-title {
    margin-bottom: 9px;
    font-size: 0.85rem;
    font-weight: 600;
}

.comparison-vs-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
}

.comparison-vs {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    border: 1px solid var(--line);
    border-radius: 50%;
    background: #fff;
    color: var(--primary);
    font-size: 0.82rem;
    font-weight: 700;
    box-shadow: 0 4px 14px rgba(20, 35, 60, 0.06);
}

.comparison-submit {
    display: flex;
    justify-content: center;
    margin: 28px 0 34px;
}

.comparison-visual-section {
    padding: 28px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface-muted, #f8fafc);
}

.comparison-subheading {
    margin-bottom: 22px;
}

.comparison-subheading h3 {
    margin: 3px 0 6px;
    font-size: 1.25rem;
}

.comparison-subheading p {
    margin: 0;
    color: var(--text-muted, #687386);
}

.comparison-visuals {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 42px;
    min-height: 300px;
}

.comparison-visual-item {
    flex: 1 1 0;
    min-width: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    gap: 12px;
}

.visual-name {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-muted, #687386);
}

.comparison-screen {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    max-width: 100%;
    min-width: 20px;
    min-height: 20px;
    padding: 10px;
    border: 4px solid #263852;
    border-radius: 10px;
    background: #eaf0f8;
    box-sizing: border-box;
    overflow: hidden;
    transition: width 0.25s ease, height 0.25s ease;
}

.comparison-screen span {
    display: block;
    width: max-content;
    max-width: 100%;
    font-size: 0.82rem;
    font-weight: 600;
    line-height: 1.3;
    text-align: center;
    color: #263852;
}

.comparison-visual-vs {
    flex: 0 0 auto;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-muted, #687386);
}

.comparison-results-section,
.comparison-differences-section {
    margin-top: 34px;
}

.comparison-results-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.comparison-result-card {
    min-width: 0;
    min-height: 104px;
    padding: 20px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: #fff;
}

.comparison-result-card span,
.comparison-difference-card span {
    display: block;
    margin-bottom: 8px;
    color: var(--text-muted, #687386);
    font-size: 0.9rem;
}

.comparison-result-card strong {
    display: block;
    font-size: 1.05rem;
    line-height: 1.45;
    overflow-wrap: anywhere;
}

.comparison-summary {
    margin-top: 18px;
    padding: 16px 18px;
    border-radius: 10px;
    background: var(--surface-muted, #f7f9fc);
    color: var(--text, #1f2937);
    font-weight: 600;
    line-height: 1.5;
}

.comparison-difference-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}

.comparison-difference-card {
    min-width: 0;
    min-height: 120px;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: #fff;
}

.comparison-difference-card strong {
    display: block;
    font-size: 0.98rem;
    line-height: 1.55;
    overflow-wrap: anywhere;
}

.comparison-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-top: 30px;
    padding-top: 26px;
    border-top: 1px solid var(--line);
}

.comparison-actions .btn {
    min-width: 110px;
}

.comparison-section .result-status {
    margin-top: 20px;
}

.comparison-section .result-status:not(.visible) {
    min-height: 0;
}

@media (max-width: 991.98px) {
    .comparison-section .comparison-card {
        padding: 24px;
    }

    .comparison-input-grid {
        grid-template-columns: minmax(0, 1fr);
        gap: 16px;
    }

    .comparison-vs-wrap {
        min-height: 44px;
    }

    .comparison-visuals {
        gap: 24px;
    }

    .comparison-difference-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 767.98px) {
    .comparison-section .comparison-card {
        padding: 16px;
        border-radius: 14px;
    }

    .comparison-panel {
        padding: 18px;
    }

    .comparison-visual-section {
        padding: 20px 14px;
    }

    .comparison-visuals {
        flex-direction: column;
        gap: 18px;
        min-height: 0;
        padding: 10px 0;
    }

    .comparison-visual-item {
        width: 100%;
    }

    .comparison-visual-vs {
        margin: 2px 0;
    }

    .comparison-result-card {
        min-height: 0;
        padding: 16px;
    }

    .comparison-difference-grid {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }

    .comparison-difference-card {
        min-height: 0;
        padding: 15px;
    }

    .comparison-actions {
        display: grid;
        grid-template-columns: 1fr 1fr;
    }

    .comparison-actions .btn {
        width: 100%;
    }
}

@media (max-width: 479.98px) {
    .comparison-field .unit-select {
        flex-basis: 100px;
    }

    .comparison-results-grid,
    .comparison-difference-grid {
        grid-template-columns: 1fr;
    }

    .comparison-actions {
        grid-template-columns: 1fr;
    }

    .comparison-screen span {
        font-size: 0.72rem;
    }
}
.popular-sizes-box {
    margin-top: 28px;
    padding: 24px 26px;
    border: 1px solid #e1e7f0;
    border-radius: 18px;
    background: #f8fafc;
}

.popular-sizes-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 18px;
}

.popular-sizes-heading h3 {
    margin: 5px 0 0;
    font-size: 18px;
    font-weight: 700;
    color: #17233c;
}

.popular-sizes-note {
    font-size: 13px;
    color: #71809a;
}

.popular-sizes-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.popular-sizes-list button {
    border: 1px solid #d8e0ec;
    background: #fff;
    color: #34445f;
    border-radius: 999px;
    padding: 9px 17px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all .2s ease;
}

.popular-sizes-list button:hover {
    border-color: #2f5bea;
    color: #2f5bea;
    transform: translateY(-1px);
}

.section-heading {
    max-width: 720px;
    margin-bottom: 34px;
}

.section-heading h2 {
    margin: 7px 0 10px;
    font-size: clamp(28px, 3vw, 38px);
    line-height: 1.15;
    color: #17233c;
}

.section-heading p {
    margin: 0;
    color: #687792;
    line-height: 1.7;
}

.tool-card {
    min-height: 120px;
    padding: 22px;
    border: 1px solid #e2e8f1;
    border-radius: 16px;
    background: #fff;
    display: flex;
    align-items: center;
    gap: 15px;
    text-decoration: none;
    box-shadow: 0 5px 20px rgba(28, 48, 82, .04);
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}

.tool-card:hover {
    transform: translateY(-3px);
    border-color: #cfd9ea;
    box-shadow: 0 12px 28px rgba(28, 48, 82, .08);
}

.tool-card strong {
    display: block;
    margin-bottom: 5px;
    color: #17233c;
}

.tool-card small {
    display: block;
    color: #74819a;
    line-height: 1.5;
}

.tool-icon {
    width: 42px;
    height: 42px;
    flex: 0 0 42px;
    display: grid;
    place-items: center;
    border-radius: 12px;
    background: #eef3ff;
    color: #2858df;
    font-weight: 700;
}

.tool-arrow {
    margin-left: auto;
    color: #7890c8;
    font-size: 20px;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
}

.category-link {
    min-height: 105px;
    padding: 20px;
    border: 1px solid #e2e8f1;
    border-radius: 15px;
    background: #fff;
    text-decoration: none;
    transition: transform .2s ease, border-color .2s ease;
}

.category-link:hover {
    transform: translateY(-2px);
    border-color: #c8d5ee;
}

.category-link strong {
    display: block;
    margin-bottom: 7px;
    color: #1b2942;
}

.category-link span {
    color: #74819a;
    font-size: 14px;
    line-height: 1.5;
}

.explain-section {
    background: #fff;
}

.explain-grid {
    display: grid;
    grid-template-columns: minmax(260px, .8fr) minmax(0, 1.2fr);
    gap: 70px;
    align-items: start;
}

.explain-grid h2 {
    margin: 7px 0 0;
    font-size: clamp(28px, 3vw, 38px);
    color: #17233c;
}

.explain-copy p {
    margin: 0 0 17px;
    color: #687792;
    line-height: 1.75;
}

.text-link {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    color: #2858df;
    font-weight: 600;
    text-decoration: none;
}

.text-link:hover {
    text-decoration: underline;
}

.quick-section {
    background: #f6f8fb;
}

@media (max-width: 991.98px) {
    .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .explain-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }
}

@media (max-width: 575.98px) {
    .popular-sizes-box {
        padding: 20px;
    }

    .popular-sizes-heading {
        display: block;
    }

    .popular-sizes-note {
        display: block;
        margin-top: 6px;
    }

    .popular-sizes-list {
        gap: 8px;
    }

    .popular-sizes-list button {
        padding: 8px 13px;
        font-size: 13px;
    }

    .category-grid {
        grid-template-columns: 1fr;
    }
}
.popular-screen-sizes-heading {
 
  padding: 24px 28px;
  
}
.quick-links {
  
  padding: 24px 28px;
}
.faq-list {
    
    margin: 0 auto;
}

.faq-item {
    border: 1px solid #e1e7f0;
    border-radius: 12px;
    background: #fff;
    margin-bottom: 12px;
    overflow: hidden;
}

.faq-item summary {
    position: relative;
    padding: 19px 52px 19px 20px;
    color: #17233c;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    list-style: none;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: "+";
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 21px;
    font-weight: 400;
    color: #2858df;
}

.faq-item[open] summary::after {
    content: "−";
}

.faq-answer {
    padding: 0 20px 20px;
    color: #687792;
    line-height: 1.7;
}

.faq-answer p {
    margin: 0;
}
/* Compare Screen Sizes */

.breadcrumbs {
    margin-bottom: 22px;
}

.breadcrumbs ol {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 7px;
    margin: 0;
    padding: 0;
    list-style: none;
    font-size: 13px;
    color: #687792;
}

.breadcrumbs li {
    display: inline-flex;
    align-items: center;
    gap: 7px;
}

.breadcrumbs a {
    color: #34445f;
    text-decoration: none;
}

.breadcrumbs a:hover {
    color: #2858df;
}

.breadcrumb-separator {
    color: #a1aaba;
}

.comparison-quick-links {
    margin: 0 0 26px;
    padding: 18px 20px;
    border: 1px solid #e1e7f0;
    border-radius: 12px;
    background: #f8fafc;
}

.quick-links-heading {
    margin-bottom: 12px;
}

.quick-links-heading p {
    margin: 4px 0 0;
    color: #687792;
    font-size: 13px;
}

.comparison-quick-links .quick-links {
    display: flex;
    flex-wrap: wrap;
    gap: 9px;
    padding: 0;
}

.comparison-quick-links .quick-links button {
    border: 1px solid #d8e0ec;
    background: #fff;
    color: #34445f;
    border-radius: 999px;
    padding: 8px 15px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: border-color .2s ease, color .2s ease, transform .2s ease;
}

.comparison-quick-links .quick-links button:hover {
    border-color: #2858df;
    color: #2858df;
    transform: translateY(-1px);
}

.comparison-visual-section {
    margin-top: 28px;
    padding: 24px 20px;
    border: 1px solid #e1e7f0;
    border-radius: 14px;
    background: #f8fafc;
}

.comparison-subheading {
    margin-bottom: 18px;
}

.comparison-subheading h3 {
    margin: 4px 0 0;
    font-size: 20px;
    color: #17233c;
}

.comparison-subheading p {
    margin: 6px 0 0;
    color: #687792;
    font-size: 14px;
}

.comparison-visuals {
    min-height: 310px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 38px;
}

.comparison-visual-item {
    flex: 1;
    min-width: 0;
    text-align: center;
}

.visual-name {
    display: block;
    margin-bottom: 12px;
    color: #34445f;
    font-size: 13px;
    font-weight: 600;
}

.comparison-screen {
    width: 160px;
    height: 90px;
    max-width: 100%;
    margin: 0 auto;
    border: 3px solid #2858df;
    border-radius: 7px;
    background: #dfe8ff;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #2858df;
    font-size: 12px;
    font-weight: 600;
    transition: width .25s ease, height .25s ease;
}

.comparison-visual-a {
    background: #e8efff;
}

.comparison-visual-b {
    background: #edf2f8;
    border-color: #53657f;
    color: #53657f;
}

.comparison-visual-item p {
    margin: 12px 0 0;
    color: #687792;
    font-size: 13px;
}

.comparison-vs-wrap,
.comparison-visual-vs {
    flex: 0 0 auto;
}

.comparison-vs {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: #fff;
    border: 1px solid #d8e0ec;
    color: #2858df;
    font-size: 12px;
    font-weight: 700;
}

.comparison-results-section {
    margin-top: 26px;
    scroll-margin-top: 24px;
}

.comparison-results-table {
    margin-bottom: 0;
    vertical-align: middle;
}

.comparison-results-table th,
.comparison-results-table td {
    padding: 11px 10px;
}

.formula-box {
    margin: 20px 0;
    padding: 18px 20px;
    border: 1px solid #e1e7f0;
    border-radius: 12px;
    background: #f8fafc;
}

.formula-box p {
    margin: 0 0 9px;
}

.formula-box p:last-child {
    margin-bottom: 0;
}

.info-card {
    height: 100%;
    padding: 20px;
    border: 1px solid #e1e7f0;
    border-radius: 12px;
    background: #fff;
}

.info-card h3 {
    margin: 0 0 8px;
    font-size: 17px;
    color: #17233c;
}

.info-card p {
    margin: 0;
    color: #687792;
    line-height: 1.6;
}

@media (max-width: 767.98px) {
    .comparison-quick-links {
        padding: 15px;
    }

    .comparison-quick-links .quick-links button {
        flex: 1 1 calc(50% - 9px);
    }

    .comparison-visuals {
        min-height: 250px;
        gap: 12px;
    }

    .comparison-visual-section {
        padding: 20px 14px;
    }

    .comparison-vs {
        width: 32px;
        height: 32px;
    }

    .comparison-screen {
        max-width: 100%;
    }

    .comparison-results-table {
        font-size: 12px;
    }

    .comparison-results-table th,
    .comparison-results-table td {
        padding: 9px 7px;
    }
}
/* Screen Size & Dimensions Category */

.category-hero {
    padding-bottom: 34px;
}



.category-hero-content p {
    
    margin: 0 0 14px;
    color: #5f6f89;
    font-size: 16px;
    line-height: 1.75;
}

.calculator-category-section {
    padding: 20px 0 58px;
}

.calculator-category-card {
    position: relative;
    height: 100%;
    overflow: hidden;
    border: 1px solid #e1e7f0;
    border-radius: 16px;
    background: #fff;
    box-shadow: 0 6px 22px rgba(27, 48, 86, .06);
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}

.calculator-category-card::before {
    content: "";
    display: block;
    width: 100%;
    height: 4px;
    background: #2f5bea;
}

.calculator-category-card:hover {
    transform: translateY(-4px);
    border-color: #cbd7f5;
    box-shadow: 0 12px 30px rgba(27, 48, 86, .11);
}

.calculator-category-card-content {
    display: flex;
    flex-direction: column;
   
    padding: 26px 25px 23px;
}



.calculator-category-card h3 {
    margin: 0 0 12px;
    color: #17233c;
    font-size: 21px;
    font-weight: 700;
    line-height: 1.3;
}

.calculator-category-card p {
    margin: 0;
    color: #687792;
    font-size: 14px;
    line-height: 1.7;
}

.category-card-link {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    width: fit-content;
    margin-top: 20px;
    padding-top: 22px;
    color: #2858df;
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
}

.category-card-link span {
    transition: transform .2s ease;
}

.category-card-link:hover {
    color: #1e48c7;
}

.category-card-link:hover span {
    transform: translateX(4px);
}

.category-info-section {
    padding-top: 12px;
}



.category-info-content p {
    margin: 0 0 15px;
    color: #5f6f89;
    font-size: 15px;
    line-height: 1.75;
}

.category-info-content p:last-child {
    margin-bottom: 0;
}

@media (max-width: 767.98px) {
    .category-hero {
        padding-bottom: 25px;
    }

    .category-hero-content p {
        font-size: 15px;
        line-height: 1.7;
    }

    .calculator-category-section {
        padding-bottom: 42px;
    }

    .calculator-category-card-content {
        min-height: 0;
        padding: 23px 21px 21px;
    }

    

    .calculator-category-card h3 {
        font-size: 19px;
    }

    .calculator-category-card p {
        font-size: 14px;
    }

    .category-card-link {
        padding-top: 20px;
    }
}