*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    width: 100%;
    min-height: 100%;
    background: #071321;
}

body {
    position: relative;
    isolation: isolate;

    width: 100%;
    min-height: 100vh;
    min-height: 100svh;
    margin: 0;
    padding: 24px;
    overflow-x: hidden;

    font-family:
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        "Noto Sans JP",
        "Hiragino Kaku Gothic ProN",
        "Yu Gothic",
        sans-serif;

    color: #ffffff;
    background: #071321;
}

#network-canvas {
    position: fixed;
    z-index: 0;
    top: 0;
    left: 0;

    display: block;

    width: 100%;
    height: 100%;

    pointer-events: none;
}

main {
    position: relative;
    z-index: 1;

    display: grid;
    place-items: center;

    width: 100%;
    min-height: calc(100vh - 48px);
    min-height: calc(100svh - 48px);
}

.about {
    position: relative;
    z-index: 1;

    width: min(100%, 860px);
    margin: 0 auto;
    text-align: center;
}

.hero {
    width: min(100%, 680px);
    margin: 0 auto;
}

h1 {
    margin: 0;
    font-size: clamp(40px, 8vw, 72px);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.04em;
}

p {
    margin: clamp(32px, 6vw, 52px) 0 0;
    font-size: clamp(15px, 2.4vw, 18px);
    line-height: 1.9;
    color: #d9e3ef;
}

.catch {
    font-size: clamp(21px, 3.5vw, 30px);
    font-weight: 700;
    line-height: 1.7;
    color: #ffffff;
}

.lead {
    width: min(100%, 650px);
    margin-right: auto;
    margin-left: auto;
}

.sub {
    color: #aebdcb;
}

.section {
    width: min(100%, 720px);
    margin: clamp(92px, 13vw, 150px) auto 0;
}

.section h2 {
    margin: 0;
    font-size: clamp(27px, 4.8vw, 42px);
    font-weight: 700;
    line-height: 1.45;
    letter-spacing: -0.03em;
    color: #ffffff;
}

.flow {
    display: grid;
    justify-items: center;
    gap: 8px;

    margin-top: clamp(38px, 6vw, 56px);
}

.flow-item {
    font-size: clamp(19px, 3vw, 25px);
    line-height: 1.5;
    color: #eef5fb;
}

.flow-arrow {
    font-size: clamp(24px, 3vw, 30px);
    line-height: 1.2;
    color: #d5e4ef;
}

.steps {
    display: grid;
    justify-items: center;
    gap: clamp(24px, 4vw, 38px);

    margin-top: clamp(42px, 7vw, 66px);
}

.step h3 {
    margin: 0;
    font-size: clamp(23px, 3.8vw, 32px);
    font-weight: 700;
    line-height: 1.5;
    color: #ffffff;
}

.audience-section {
    width: min(100%, 760px);
}

.audience-title {
    width: min(100%, 680px);
    margin-right: auto;
    margin-left: auto;
}

.audience-title span {
    display: block;
}

.intro {
    margin-top: clamp(38px, 6vw, 54px);
}

.tag-groups {
    display: grid;
    gap: 18px;

    width: min(100%, 720px);
    margin: clamp(34px, 5vw, 48px) auto 0;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px 14px;
}

.tags span {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    padding: 9px 14px;

    font-size: clamp(14px, 2vw, 16px);
    line-height: 1.5;
    color: #dce8f2;

    border: 1px solid rgba(151, 201, 237, 0.28);
    border-radius: 999px;
    background: rgba(65, 122, 164, 0.12);
}

.closing {
    width: min(100%, 620px);
    margin: clamp(48px, 7vw, 70px) auto 0;
}

.closing p {
    margin: 0;
}

.closing p + p {
    margin-top: clamp(20px, 3vw, 28px);
}

.closing-emphasis {
    font-size: clamp(19px, 3vw, 25px);
    font-weight: 700;
    color: #ffffff;
}

.mobile-break {
    display: none;
}

.back-link {
    position: relative;
    z-index: 2;

    display: inline-flex;
    align-items: center;
    justify-content: center;

    margin-top: clamp(52px, 8vw, 76px);
    padding: 12px 20px;

    color: #ffffff;
    text-decoration: none;
    font-size: clamp(14px, 2.2vw, 16px);
    line-height: 1.5;

    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.04);

    transition:
        border-color 0.2s ease,
        background-color 0.2s ease,
        transform 0.2s ease;
}

.back-link:hover {
    border-color: rgba(255, 255, 255, 0.7);
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-1px);
}

.back-link:focus-visible {
    outline: 3px solid rgba(91, 188, 255, 0.35);
    outline-offset: 4px;
}

.examples-section {
    position: relative;
    z-index: 1;

    width: min(100%, 860px);
    margin: clamp(78px, 11vw, 126px) auto 0;
    padding: 0;
    text-align: left;
}

.examples-heading {
    width: min(100%, 720px);
    margin: 0 auto clamp(44px, 6vw, 66px);
    text-align: center;
}

.examples-heading h2 {
    margin: 0;
    font-size: clamp(28px, 5vw, 46px);
    font-weight: 700;
    line-height: 1.35;
    letter-spacing: -0.03em;
    color: #ffffff;
}

.examples-heading h2 span {
    display: block;
}

.examples-heading p {
    width: min(100%, 620px);
    margin: clamp(20px, 3vw, 28px) auto 0;
    font-size: clamp(15px, 2.2vw, 18px);
    line-height: 1.95;
    color: #c9d6e4;
}

.example-list {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: clamp(36px, 6vw, 56px);

    width: 100%;
}

.example-card {
    position: relative;
    z-index: 1;

    width: 100%;
    min-width: 0;
    padding: clamp(28px, 5vw, 48px);

    border: 1px solid rgba(151, 201, 237, 0.22);
    border-radius: 24px;
    background:
        linear-gradient(
            145deg,
            rgba(30, 60, 92, 0.72),
            rgba(17, 41, 68, 0.66)
        );
}

.example-person {
    margin: 0;
    padding: 0 0 clamp(28px, 4vw, 38px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.example-number {
    margin: 0 0 14px;
    font-size: 12px;
    font-weight: 700;
    line-height: 1.4;
    letter-spacing: 0.16em;
    color: #7fbce8;
}

.example-person h3 {
    margin: 0;
    font-size: clamp(28px, 4.8vw, 42px);
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: -0.03em;
    color: #ffffff;
    overflow-wrap: anywhere;
}

.example-role {
    margin: 8px 0 0;
    font-size: clamp(15px, 2.2vw, 18px);
    font-weight: 500;
    line-height: 1.6;
    color: #b9c7d6;
}

.example-introduction {
    margin-top: clamp(30px, 5vw, 42px);
}

.example-information {
    margin-top: clamp(38px, 6vw, 54px);
    padding-top: clamp(30px, 5vw, 42px);
    border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.example-introduction h4,
.example-information h4 {
    margin: 0;
    font-size: clamp(18px, 2.8vw, 22px);
    font-weight: 700;
    line-height: 1.5;
    color: #ffffff;
}

.example-text {
    width: min(100%, 720px);
    margin-top: 20px;
}

.example-text p {
    margin: 0;
    font-size: clamp(15px, 2.1vw, 18px);
    line-height: 2;
    color: #d6e0ea;
    overflow-wrap: anywhere;
}

.example-text p + p {
    margin-top: 14px;
}

.example-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;

    width: 100%;
    margin: 22px 0 0;
    padding: 0;

    list-style: none;
}

.example-tags li {
    max-width: 100%;
    padding: 11px 15px;

    font-size: clamp(13px, 1.9vw, 15px);
    font-weight: 500;
    line-height: 1.6;
    color: #e2edf6;
    overflow-wrap: anywhere;

    border: 1px solid rgba(151, 201, 237, 0.34);
    border-radius: 999px;
    background: rgba(83, 145, 190, 0.14);
}

.examples-closing {
    position: relative;
    z-index: 1;

    width: min(100%, 680px);
    margin: clamp(56px, 8vw, 88px) auto 0;
    text-align: center;
}

.examples-closing p {
    margin: 0;
    font-size: clamp(15px, 2.3vw, 18px);
    line-height: 2;
    color: #cbd8e5;
}

.examples-closing p + p {
    margin-top: clamp(18px, 3vw, 24px);
}

.examples-closing .examples-closing-lead {
    font-size: clamp(22px, 3.8vw, 30px);
    font-weight: 700;
    line-height: 1.65;
    color: #ffffff;
}

.back-area {
    position: relative;
    z-index: 2;

    margin-top: clamp(42px, 6vw, 60px);
    text-align: center;
}

.back-area .back-link {
    margin-top: 0;
}

@media (max-width: 768px) {
    .section {
        margin-top: 92px;
    }

    .section h2 {
        font-size: 31px;
        line-height: 1.5;
    }

    .audience-title {
        font-size: 29px;
    }

    .tags {
        gap: 10px;
    }

    .examples-section {
        margin-top: 82px;
    }

    .examples-heading {
        margin-bottom: 42px;
    }

    .example-list {
        gap: 30px;
    }

    .example-card {
        padding: 28px 24px;
        border-radius: 20px;
    }

    .example-person {
        padding-bottom: 26px;
    }

    .example-introduction {
        margin-top: 28px;
    }

    .example-information {
        margin-top: 36px;
        padding-top: 28px;
    }

    .example-text {
        margin-top: 18px;
    }

    .example-text p {
        line-height: 1.95;
    }

    .example-text p + p {
        margin-top: 12px;
    }

    .example-tags {
        gap: 11px 9px;
        margin-top: 20px;
    }

    .example-tags li {
        padding: 11px 14px;
    }

    .examples-closing {
        margin-top: 52px;
    }

    .back-area {
        margin-top: 40px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 20px;
    }

    main {
        min-height: calc(100vh - 40px);
        min-height: calc(100svh - 40px);
    }

    .about {
        width: min(100%, 360px);
    }

    .hero {
        width: 100%;
    }

    h1 {
        font-size: 48px;
    }

    .catch {
        font-size: 22px;
        line-height: 1.7;
    }

    .lead,
    .sub {
        font-size: 15px;
        line-height: 1.95;
    }

    .mobile-break {
        display: inline;
    }

    .section {
        width: 100%;
        margin-top: 82px;
    }

    .section h2 {
        font-size: 27px;
        line-height: 1.55;
        letter-spacing: -0.02em;
    }

    .audience-title {
        width: 100%;
        font-size: 26px;
        line-height: 1.55;
    }

    .audience-title span {
        display: block;
        white-space: nowrap;
    }

    .intro {
        margin-top: 34px;
        font-size: 15px;
    }

    .tag-groups {
        gap: 14px;
        margin-top: 30px;
    }

    .tags {
        gap: 9px 8px;
    }

    .tags span {
        padding: 8px 11px;
        font-size: 14px;
    }

    .closing {
        margin-top: 42px;
    }

    .closing p {
        font-size: 15px;
        line-height: 1.9;
    }

    .closing p + p {
        margin-top: 22px;
    }

    .closing-emphasis {
        font-size: 18px;
    }

    .examples-section {
        width: 100%;
        margin-top: 78px;
    }

    .examples-heading {
        margin-bottom: 36px;
    }

    .examples-heading h2 {
        font-size: 27px;
        line-height: 1.5;
    }

    .examples-heading h2 span {
        display: block;
    }

    .examples-heading p {
        margin-top: 18px;
        font-size: 15px;
        line-height: 1.9;
    }

    .example-list {
        gap: 26px;
    }

    .example-card {
        padding: 24px 20px;
        border-radius: 18px;
    }

    .example-number {
        margin-bottom: 12px;
        font-size: 11px;
    }

    .example-person h3 {
        font-size: 28px;
    }

    .example-role {
        margin-top: 6px;
        font-size: 15px;
    }

    .example-introduction h4,
    .example-information h4 {
        font-size: 18px;
    }

    .example-text p {
        font-size: 15px;
        line-height: 1.95;
    }

    .example-tags {
        display: grid;
        grid-template-columns: minmax(0, 1fr);
        gap: 10px;
    }

    .example-tags li {
        width: 100%;
        padding: 12px 14px;
        line-height: 1.65;
        border-radius: 12px;
    }

    .examples-closing {
        margin-top: 48px;
    }

    .examples-closing p {
        font-size: 15px;
        line-height: 1.95;
    }

    .examples-closing p + p {
        margin-top: 18px;
    }

    .examples-closing .examples-closing-lead {
        font-size: 22px;
        line-height: 1.7;
    }

    .back-area {
        margin-top: 36px;
    }

    .back-link {
        width: min(100%, 260px);
        min-height: 48px;
    }
}

@media (max-width: 360px) {
    .audience-title {
        font-size: 24px;
    }

    .audience-title span {
        white-space: normal;
    }

    .examples-heading h2 {
        font-size: 25px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .back-link {
        transition: none;
    }
}