:root {
    color-scheme: light;
    --ink: #17253d;
    --muted: #647087;
    --line: #dce3ec;
    --paper: #f7f9fc;
    --surface: #ffffff;
    --blue: #236a99;
    --blue-dark: #164d73;
    --aqua: #65b8bd;
    --violet: #705d98;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
    box-sizing: border-box;
}

html {
    background: var(--paper);
    color: var(--ink);
    scroll-behavior: smooth;
}

body {
    min-width: 320px;
    margin: 0;
    background:
        radial-gradient(circle at 88% 6%, rgb(101 184 189 / 18%), transparent 26rem),
        linear-gradient(180deg, #fbfcfe 0, var(--paper) 34rem);
}

a {
    color: inherit;
}

.site-header,
main,
footer {
    width: min(1120px, calc(100% - 40px));
    margin-inline: auto;
}

.site-header {
    min-height: 88px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    border-bottom: 1px solid rgb(220 227 236 / 80%);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    color: var(--ink);
    font-size: 1.05rem;
    font-weight: 750;
    letter-spacing: -0.02em;
    text-decoration: none;
}

.brand img {
    width: 46px;
    height: 46px;
    object-fit: contain;
}

.research-label {
    padding: 7px 11px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgb(255 255 255 / 72%);
    color: var(--muted);
    font-size: 0.74rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.hero {
    min-height: 510px;
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
    align-items: center;
    gap: clamp(32px, 7vw, 92px);
    padding-block: 70px 64px;
}

.eyebrow {
    margin: 0 0 16px;
    color: var(--blue);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1 {
    max-width: 820px;
    margin-bottom: 24px;
    font-size: clamp(2.7rem, 6vw, 5.25rem);
    line-height: 0.98;
    letter-spacing: -0.065em;
}

.hero-summary {
    max-width: 690px;
    margin-bottom: 0;
    color: var(--muted);
    font-size: clamp(1.05rem, 2vw, 1.25rem);
    line-height: 1.65;
}

.hero-mark {
    position: relative;
    aspect-ratio: 1;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: linear-gradient(145deg, rgb(255 255 255 / 94%), rgb(233 242 247 / 82%));
    box-shadow: 0 28px 70px rgb(34 69 94 / 14%);
}

.hero-mark::after {
    content: "";
    position: absolute;
    inset: 12%;
    border: 1px solid rgb(35 106 153 / 13%);
    border-radius: 50%;
}

.hero-mark img {
    z-index: 2;
    width: 68%;
    height: 68%;
    object-fit: contain;
    filter: drop-shadow(0 16px 22px rgb(24 57 85 / 16%));
}

.orbit {
    position: absolute;
    border: 1px solid rgb(35 106 153 / 19%);
    border-radius: 50%;
}

.orbit-one {
    inset: 3%;
}

.orbit-two {
    inset: 24%;
    border-color: rgb(112 93 152 / 18%);
}

.tools {
    padding-block: 62px 34px;
    border-top: 1px solid var(--line);
}

.section-heading {
    display: grid;
    grid-template-columns: 1fr minmax(260px, 460px);
    align-items: end;
    gap: 32px;
    margin-bottom: 30px;
}

h2 {
    margin-bottom: 0;
    font-size: clamp(2rem, 4vw, 3rem);
    letter-spacing: -0.045em;
}

.section-heading > p {
    margin-bottom: 4px;
    color: var(--muted);
    line-height: 1.6;
}

.tool-card {
    display: grid;
    grid-template-columns: minmax(230px, 0.7fr) minmax(0, 1.3fr);
    min-height: 390px;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 26px;
    background: var(--surface);
    box-shadow: 0 22px 58px rgb(28 54 78 / 9%);
}

.tool-visual {
    position: relative;
    min-height: 300px;
    overflow: hidden;
    background:
        linear-gradient(145deg, #f4e6d3 0%, #d7b38e 56%, #b97d65 100%);
}

.tool-visual::before,
.tool-visual::after {
    content: "";
    position: absolute;
    border-radius: 50%;
}

.tool-visual::before {
    width: 280px;
    height: 280px;
    top: -82px;
    left: -94px;
    border: 46px solid rgb(91 55 43 / 9%);
}

.tool-visual::after {
    width: 210px;
    height: 210px;
    right: -90px;
    bottom: -85px;
    background: rgb(255 244 220 / 24%);
}

.tool-figure {
    position: absolute;
    z-index: 2;
    inset: 5% 8%;
    width: 84%;
    height: 90%;
    object-fit: contain;
    object-position: center;
    filter: drop-shadow(0 18px 22px rgb(79 42 32 / 24%));
}

.tool-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: clamp(30px, 6vw, 58px);
}

.tool-meta {
    display: flex;
    align-items: center;
    gap: 9px;
    margin-bottom: 20px;
    color: var(--blue);
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0.09em;
    text-transform: uppercase;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #3a9a76;
    box-shadow: 0 0 0 5px rgb(58 154 118 / 12%);
}

h3 {
    margin-bottom: 15px;
    font-size: clamp(2rem, 4vw, 3.2rem);
    letter-spacing: -0.045em;
}

.tool-content h3 {
    line-height: 1.02;
    text-wrap: balance;
}

.tool-content > p {
    max-width: 650px;
    margin-bottom: 18px;
    color: var(--muted);
    font-size: 1.05rem;
    line-height: 1.65;
}

.tool-content ul {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0 0 30px;
    padding: 0;
    list-style: none;
}

.tool-content li {
    padding: 7px 10px;
    border-radius: 8px;
    background: #f0f5f8;
    color: #506074;
    font-size: 0.8rem;
    font-weight: 650;
}

.tool-link {
    display: inline-flex;
    align-items: center;
    gap: 18px;
    margin-top: auto;
    padding: 13px 18px;
    border-radius: 11px;
    background: var(--ink);
    color: white;
    font-size: 0.94rem;
    font-weight: 750;
    text-decoration: none;
    transition: transform 150ms ease, background 150ms ease;
}

.tool-link:hover {
    background: var(--blue-dark);
    transform: translateY(-2px);
}

.tool-link:focus-visible,
.brand:focus-visible,
footer a:focus-visible {
    outline: 3px solid rgb(35 106 153 / 32%);
    outline-offset: 4px;
}

.use-boundary {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 22px;
    margin-block: 42px 76px;
    padding: 22px 24px;
    border: 1px solid #d8dfe8;
    border-radius: 15px;
    background: rgb(255 255 255 / 66%);
}

.use-boundary strong {
    font-size: 0.88rem;
}

.use-boundary p {
    margin-bottom: 0;
    color: var(--muted);
    font-size: 0.88rem;
    line-height: 1.55;
}

footer {
    min-height: 86px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.86rem;
}

footer a {
    color: var(--blue-dark);
    font-weight: 700;
    text-underline-offset: 3px;
}

@media (max-width: 820px) {
    .hero {
        min-height: 0;
        grid-template-columns: 1fr;
        padding-block: 56px;
    }

    .hero-mark {
        width: min(360px, 85vw);
        margin-inline: auto;
    }

    .section-heading,
    .tool-card {
        grid-template-columns: 1fr;
    }

    .section-heading {
        align-items: start;
    }

    .tool-visual {
        min-height: 250px;
    }
}

@media (max-width: 560px) {
    .site-header,
    main,
    footer {
        width: min(100% - 28px, 1120px);
    }

    .research-label {
        display: none;
    }

    h1 {
        font-size: clamp(2.55rem, 14vw, 4rem);
    }

    .tool-content {
        padding: 28px 24px 30px;
    }

    .use-boundary {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    footer {
        align-items: flex-start;
        flex-direction: column;
        justify-content: center;
        padding-block: 24px;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    .tool-link {
        transition: none;
    }
}