:root {
    --gg-blue: #075cff;
    --gg-blue-dark: #0438b8;
    --gg-navy: #08184e;
    --gg-text: #172349;
    --gg-muted: #5f6c89;
    --gg-line: #e3ebf7;
    --gg-sky: #eaf5ff;
    --gg-yellow: #ffc928;
    --gg-yellow-dark: #eba900;
    --gg-white: #ffffff;
    --gg-bg: #f4f9ff;
    --gg-shadow:
        0 20px 55px rgba(15, 50, 120, .12);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--gg-text);
    background:
        linear-gradient(180deg,
            #ffffff 0%,
            #f5faff 48%,
            #eef7ff 100%);
    font-family:
        "Pretendard",
        "SUIT",
        "Noto Sans KR",
        "Apple SD Gothic Neo",
        "Malgun Gothic",
        system-ui,
        sans-serif;
    word-break: keep-all;
}

body.menu-open {
    overflow: hidden;
}

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

button,
a {
    -webkit-tap-highlight-color: transparent;
}

.gugudan-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(219, 231, 248, .92);
    background: rgba(255, 255, 255, .94);
    backdrop-filter: blur(16px);
}

.gugudan-header-inner {
    width: min(calc(100% - 48px), 1480px);
    min-height: 82px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 28px;
}

.gugudan-brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    flex: 0 0 auto;
}

.gugudan-brand-mark {
    width: 48px;
    height: 48px;
    display: block;
    overflow: hidden;
    flex: 0 0 auto;
    border-radius: 16px;
    background: transparent;
    box-shadow:
        0 10px 24px rgba(7, 92, 255, .25);
}

.gugudan-brand-mark img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.gugudan-brand-copy {
    display: grid;
    gap: 2px;
}

.gugudan-brand-copy small {
    color: #75829c;
    font-size: 10px;
    font-weight: 900;
    letter-spacing: .12em;
}

.gugudan-brand-copy strong {
    color: var(--gg-navy);
    font-size: 21px;
    font-weight: 950;
    letter-spacing: -.045em;
}

.gugudan-site-nav {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 34px;
    color: #26365f;
    font-size: 15px;
    font-weight: 900;
}

.gugudan-site-nav>a:not(.gugudan-nav-entry) {
    padding: 10px 0;
    transition:
        color .16s ease,
        transform .16s ease;
}

.gugudan-site-nav>a:not(.gugudan-nav-entry):hover {
    color: var(--gg-blue);
    transform: translateY(-1px);
}

.gugudan-nav-entry {
    min-height: 46px;
    padding: 0 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 15px;
    color: #ffffff;
    background:
        linear-gradient(180deg,
            #156cff,
            #075cff);
    box-shadow:
        0 10px 22px rgba(7, 92, 255, .23);
}

.gugudan-menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    margin-left: auto;
    border: 1px solid #d9e5f6;
    border-radius: 14px;
    background: #ffffff;
    cursor: pointer;
}

.gugudan-menu-toggle span {
    width: 20px;
    height: 2px;
    display: block;
    margin: 4px auto;
    border-radius: 999px;
    background: var(--gg-navy);
}

.gugudan-hero {
    position: relative;
    overflow: hidden;
}

.gugudan-hero::before {
    position: absolute;
    inset: 0;
    content: "";
    background:
        radial-gradient(circle at 84% 20%,
            rgba(0, 126, 255, .18),
            transparent 30%),
        radial-gradient(circle at 45% 95%,
            rgba(255, 201, 40, .14),
            transparent 34%),
        linear-gradient(90deg,
            #ffffff 0%,
            #ffffff 36%,
            #f4faff 62%,
            #eaf5ff 100%);
}

.gugudan-hero-inner {
    position: relative;
    z-index: 1;
    width: min(calc(100% - 48px), 1480px);
    min-height: 650px;
    margin: 0 auto;
    padding: 72px 34px 72px;
    display: grid;
    grid-template-columns:
        minmax(480px, .94fr) minmax(520px, 1.06fr);
    align-items: center;
    gap: 60px;
}

.gugudan-eyebrow {
    width: fit-content;
    min-height: 38px;
    padding: 0 17px;
    display: inline-flex;
    align-items: center;
    border: 2px solid #4685ff;
    border-radius: 999px;
    color: var(--gg-blue);
    background: rgba(255, 255, 255, .88);
    font-size: 14px;
    font-weight: 950;
    box-shadow:
        0 8px 20px rgba(7, 92, 255, .08);
}

.gugudan-hero h1 {
    margin: 28px 0 22px;
    color: var(--gg-navy);
    font-size: clamp(48px, 5vw, 78px);
    line-height: 1.08;
    letter-spacing: -.065em;
    font-weight: 950;
}

.gugudan-hero h1 strong {
    display: block;
    color: var(--gg-blue);
}

.gugudan-hero-description {
    max-width: 650px;
    margin: 0;
    color: #354263;
    font-size: clamp(20px, 1.7vw, 27px);
    line-height: 1.65;
    letter-spacing: -.035em;
    font-weight: 700;
}

.gugudan-hero-actions {
    margin-top: 34px;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.gugudan-primary-button,
.gugudan-secondary-button {
    min-height: 58px;
    padding: 0 25px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    border-radius: 18px;
    font-size: 17px;
    font-weight: 950;
    transition:
        transform .16s ease,
        box-shadow .16s ease;
}

.gugudan-primary-button {
    color: #ffffff;
    background:
        linear-gradient(180deg,
            #176fff,
            #075cff);
    box-shadow:
        0 13px 28px rgba(7, 92, 255, .28);
}

.gugudan-primary-button span {
    width: 28px;
    height: 28px;
    padding-bottom: 3px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    color: var(--gg-blue);
    background: #ffffff;
    font-size: 26px;
    line-height: 1;
}

.gugudan-secondary-button {
    color: var(--gg-blue);
    border: 1px solid #c6d9ff;
    background: #ffffff;
}

.gugudan-primary-button:hover,
.gugudan-secondary-button:hover {
    transform: translateY(-2px);
}

.gugudan-primary-button:hover {
    box-shadow:
        0 17px 34px rgba(7, 92, 255, .34);
}

.gugudan-entry-note {
    max-width: 610px;
    margin: 20px 0 0;
    color: #748098;
    font-size: 13px;
    line-height: 1.65;
    font-weight: 750;
}

.gugudan-hero-visual {
    position: relative;
    min-height: 500px;
    display: grid;
    place-items: center;
}

.gugudan-visual-glow {
    position: absolute;
    width: 470px;
    height: 470px;
    border-radius: 50%;
    background:
        radial-gradient(circle,
            rgba(51, 143, 255, .23),
            rgba(51, 143, 255, .05) 56%,
            transparent 72%);
}

.gugudan-main-card {
    position: relative;
    z-index: 2;
    width: min(100%, 510px);
    padding: 31px;
    border: 1px solid rgba(207, 224, 255, .92);
    border-radius: 34px;
    background:
        linear-gradient(180deg,
            rgba(255, 255, 255, .98),
            rgba(247, 251, 255, .98));
    box-shadow:
        0 38px 85px rgba(16, 61, 135, .2);
    transform: rotate(-1.5deg);
}

.gugudan-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    color: #43516f;
    font-size: 14px;
    font-weight: 900;
}

.gugudan-card-top b {
    min-height: 30px;
    padding: 0 12px;
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    color: #146b35;
    background: #e6faed;
    font-size: 12px;
}

.gugudan-question {
    margin: 38px 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
}

.gugudan-question span,
.gugudan-question strong {
    min-width: 78px;
    height: 78px;
    display: grid;
    place-items: center;
    border-radius: 24px;
    color: var(--gg-blue);
    background: #edf4ff;
    font-size: 42px;
    font-weight: 950;
    box-shadow:
        inset 0 0 0 1px #d8e6ff;
}

.gugudan-question strong {
    min-width: 104px;
    color: #111827;
    background:
        linear-gradient(180deg,
            #ffe36c,
            var(--gg-yellow));
    box-shadow:
        0 10px 23px rgba(255, 189, 0, .22);
}

.gugudan-question i {
    color: #7f8aa0;
    font-size: 28px;
    font-style: normal;
    font-weight: 900;
}

.gugudan-progress>div:first-child {
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: #586581;
    font-size: 13px;
    font-weight: 850;
}

.gugudan-progress>div:first-child b {
    color: var(--gg-blue);
}

.gugudan-progress-track {
    height: 12px;
    margin-top: 10px;
    overflow: hidden;
    border-radius: 999px;
    background: #e9eef7;
}

.gugudan-progress-track span {
    width: 75%;
    height: 100%;
    display: block;
    border-radius: inherit;
    background:
        linear-gradient(90deg,
            #075cff,
            #42a5ff);
}

.gugudan-mini-features {
    margin-top: 25px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 9px;
}

.gugudan-mini-features span {
    min-height: 44px;
    display: grid;
    place-items: center;
    border: 1px solid #e1e9f5;
    border-radius: 15px;
    color: #34415f;
    background: #ffffff;
    font-size: 12px;
    font-weight: 900;
}

.gugudan-floating-number,
.gugudan-floating-badge {
    position: absolute;
    z-index: 3;
    display: grid;
    place-items: center;
    box-shadow:
        0 18px 38px rgba(15, 57, 130, .16);
}

.gugudan-floating-number {
    width: 92px;
    height: 92px;
    border-radius: 27px;
    color: var(--gg-navy);
    background: #ffffff;
    font-size: 23px;
    font-weight: 950;
}

.number-one {
    top: 25px;
    left: 0;
    transform: rotate(-11deg);
}

.number-two {
    right: 0;
    bottom: 40px;
    color: #ffffff;
    background: var(--gg-blue);
    transform: rotate(8deg);
}

.number-three {
    left: 22px;
    bottom: 10px;
    color: #614400;
    background: #ffe075;
    transform: rotate(5deg);
}

.gugudan-floating-badge {
    top: 75px;
    right: -8px;
    min-height: 48px;
    padding: 0 18px;
    border-radius: 999px;
    color: #18603c;
    background: #dcfce7;
    font-size: 14px;
    font-weight: 950;
    transform: rotate(4deg);
}

.gugudan-feature-strip {
    position: relative;
    z-index: 4;
    width: min(calc(100% - 48px), 1380px);
    margin: -27px auto 0;
    padding: 24px 30px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border: 1px solid #e0e9f6;
    border-radius: 27px;
    background: rgba(255, 255, 255, .97);
    box-shadow: var(--gg-shadow);
}

.gugudan-feature-strip article {
    min-height: 80px;
    padding: 0 30px;
    display: flex;
    align-items: center;
    gap: 18px;
}

.gugudan-feature-strip article+article {
    border-left: 1px solid #e4ebf5;
}

.gugudan-feature-strip article>span {
    flex: 0 0 62px;
    width: 62px;
    height: 62px;
    display: grid;
    place-items: center;
    border-radius: 20px;
    background: #eef5ff;
    font-size: 29px;
}

.gugudan-feature-strip strong {
    display: block;
    color: var(--gg-navy);
    font-size: 18px;
    font-weight: 950;
}

.gugudan-feature-strip p {
    margin: 6px 0 0;
    color: #68748e;
    font-size: 13px;
    line-height: 1.45;
    font-weight: 700;
}

.gugudan-section {
    width: min(calc(100% - 48px), 1380px);
    margin: 0 auto;
    padding: 110px 0 0;
}

.gugudan-section-heading {
    max-width: 840px;
    margin: 0 auto 43px;
    text-align: center;
}

.gugudan-section-heading>span,
.gugudan-record-copy>span,
.gugudan-bottom-cta>div>span {
    color: var(--gg-blue);
    font-size: 12px;
    font-weight: 950;
    letter-spacing: .14em;
}

.gugudan-section-heading h2,
.gugudan-record-copy h2 {
    margin: 13px 0 16px;
    color: var(--gg-navy);
    font-size: clamp(34px, 4vw, 51px);
    line-height: 1.18;
    letter-spacing: -.055em;
    font-weight: 950;
}

.gugudan-section-heading h2 strong,
.gugudan-record-copy h2 strong {
    color: var(--gg-blue);
}

.gugudan-section-heading p,
.gugudan-record-copy>p {
    margin: 0;
    color: #55617d;
    font-size: 18px;
    line-height: 1.75;
    font-weight: 650;
}

.gugudan-feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.gugudan-feature-card {
    min-height: 300px;
    padding: 29px;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--gg-line);
    border-radius: 27px;
    background:
        linear-gradient(180deg,
            #ffffff,
            #f9fbff);
    box-shadow:
        0 15px 34px rgba(18, 54, 120, .07);
    transition:
        transform .18s ease,
        box-shadow .18s ease;
}

.gugudan-feature-card:hover {
    transform: translateY(-5px);
    box-shadow:
        0 22px 46px rgba(18, 54, 120, .12);
}

.gugudan-feature-icon {
    width: 62px;
    height: 62px;
    display: grid;
    place-items: center;
    border-radius: 20px;
    font-size: 24px;
    font-weight: 950;
}

.gugudan-feature-icon.blue {
    color: #075cff;
    background: #eaf2ff;
}

.gugudan-feature-icon.purple {
    color: #7a46e8;
    background: #f3edff;
}

.gugudan-feature-icon.yellow {
    color: #a36700;
    background: #fff3c4;
}

.gugudan-feature-icon.green {
    color: #0f8a46;
    background: #e8faef;
}

.gugudan-feature-icon.pink {
    color: #cf347c;
    background: #ffedf6;
}

.gugudan-feature-icon.navy {
    color: #172349;
    background: #e9edf6;
}

.gugudan-feature-card h3 {
    margin: 22px 0 12px;
    color: var(--gg-navy);
    font-size: 23px;
    letter-spacing: -.035em;
    font-weight: 950;
}

.gugudan-feature-card p {
    margin: 0;
    color: #59657e;
    font-size: 15px;
    line-height: 1.7;
    font-weight: 650;
}

.gugudan-card-tag {
    width: fit-content;
    min-height: 29px;
    margin-top: auto;
    padding: 0 11px;
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    color: #44608f;
    background: #edf4ff;
    font-size: 11px;
    font-weight: 900;
}

.gugudan-record-section {
    width: min(calc(100% - 48px), 1380px);
    margin: 110px auto 0;
}

.gugudan-record-inner {
    padding: 58px;
    display: grid;
    grid-template-columns: 1fr .92fr;
    align-items: center;
    gap: 65px;
    overflow: hidden;
    border-radius: 36px;
    color: #ffffff;
    background:
        radial-gradient(circle at 87% 15%,
            rgba(85, 173, 255, .32),
            transparent 27%),
        linear-gradient(135deg,
            #071c62,
            #075cff);
    box-shadow:
        0 25px 64px rgba(5, 55, 173, .24);
}

.gugudan-record-copy>span {
    color: #9fc3ff;
}

.gugudan-record-copy h2 {
    color: #ffffff;
}

.gugudan-record-copy h2 strong {
    color: #ffe269;
}

.gugudan-record-copy>p {
    color: #dce9ff;
}

.gugudan-record-copy ul {
    margin: 27px 0 0;
    padding: 0;
    display: grid;
    gap: 12px;
    list-style: none;
}

.gugudan-record-copy li {
    position: relative;
    padding-left: 29px;
    color: #ffffff;
    font-size: 15px;
    font-weight: 800;
}

.gugudan-record-copy li::before {
    position: absolute;
    left: 0;
    top: -1px;
    width: 21px;
    height: 21px;
    content: "✓";
    display: grid;
    place-items: center;
    border-radius: 50%;
    color: #075cff;
    background: #ffe269;
    font-size: 12px;
    font-weight: 950;
}

.gugudan-record-preview {
    padding: 28px;
    border: 1px solid rgba(255, 255, 255, .52);
    border-radius: 29px;
    color: var(--gg-text);
    background: rgba(255, 255, 255, .97);
    box-shadow:
        0 25px 55px rgba(0, 21, 81, .22);
}

.record-preview-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: #62708b;
    font-size: 12px;
    font-weight: 850;
}

.record-preview-head strong {
    color: var(--gg-navy);
}

.record-preview-score {
    margin: 28px 0 24px;
    display: flex;
    align-items: flex-end;
    gap: 12px;
}

.record-preview-score strong {
    color: var(--gg-blue);
    font-size: 52px;
    line-height: 1;
    font-weight: 950;
}

.record-preview-score span {
    padding-bottom: 5px;
    color: #69758e;
    font-size: 13px;
    font-weight: 800;
}

.record-preview-bars {
    display: grid;
    gap: 15px;
}

.record-preview-bars>div {
    display: grid;
    grid-template-columns: 94px 1fr 38px;
    align-items: center;
    gap: 10px;
    color: #4c5975;
    font-size: 11px;
    font-weight: 850;
}

.record-preview-bars i {
    height: 9px;
    overflow: hidden;
    border-radius: 999px;
    background: #e8edf5;
}

.record-preview-bars i b {
    height: 100%;
    display: block;
    border-radius: inherit;
    background:
        linear-gradient(90deg,
            #075cff,
            #42a5ff);
}

.record-preview-bars strong {
    color: var(--gg-blue);
    text-align: right;
}

.record-preview-message {
    margin-top: 23px;
    padding: 13px 15px;
    border-radius: 15px;
    color: #725200;
    background: #fff5cc;
    font-size: 12px;
    font-weight: 900;
}

.gugudan-use-section {
    padding-bottom: 110px;
}

.gugudan-use-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.gugudan-use-card {
    min-height: 390px;
    padding: 37px;
    display: flex;
    flex-direction: column;
    border: 1px solid #dfe8f5;
    border-radius: 30px;
    background: #ffffff;
    box-shadow:
        0 17px 40px rgba(18, 54, 120, .08);
}

.gugudan-use-card.student {
    background:
        linear-gradient(145deg,
            #ffffff,
            #eef6ff);
}

.gugudan-use-card.academy {
    background:
        linear-gradient(145deg,
            #ffffff,
            #fff8dc);
}

.gugudan-use-number {
    width: fit-content;
    min-height: 36px;
    padding: 0 14px;
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    color: #ffffff;
    background: var(--gg-blue);
    font-size: 13px;
    font-weight: 950;
}

.gugudan-use-card.academy .gugudan-use-number {
    color: #6c4c00;
    background: #ffd854;
}

.gugudan-use-card h3 {
    margin: 22px 0 22px;
    color: var(--gg-navy);
    font-size: 27px;
    letter-spacing: -.045em;
    font-weight: 950;
}

.gugudan-use-card ol {
    margin: 0;
    padding: 0;
    display: grid;
    gap: 15px;
    counter-reset: gugudan-step;
    list-style: none;
}

.gugudan-use-card li {
    position: relative;
    min-height: 42px;
    padding: 10px 0 0 52px;
    color: #4d5976;
    font-size: 15px;
    line-height: 1.55;
    font-weight: 750;
    counter-increment: gugudan-step;
}

.gugudan-use-card li::before {
    position: absolute;
    left: 0;
    top: 3px;
    width: 38px;
    height: 38px;
    content: counter(gugudan-step);
    display: grid;
    place-items: center;
    border-radius: 13px;
    color: var(--gg-blue);
    background: #eaf2ff;
    font-size: 13px;
    font-weight: 950;
}

.gugudan-use-card.academy li::before {
    color: #755400;
    background: #fff1b7;
}

.gugudan-use-card>a {
    width: fit-content;
    min-height: 48px;
    margin-top: auto;
    align-self: flex-end;
    padding: 0 19px;
    display: inline-flex;
    align-items: center;
    border-radius: 15px;
    color: var(--gg-blue);
    border: 1px solid #bdd4ff;
    background: #ffffff;
    font-size: 14px;
    font-weight: 950;
}

.gugudan-use-card.academy>a {
    color: #705000;
    border-color: #f2d46a;
}

.gugudan-bottom-cta {
    width: min(calc(100% - 48px), 1380px);
    min-height: 210px;
    margin: 0 auto 100px;
    padding: 43px 50px;
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 40px;
    border-radius: 34px;
    color: #ffffff;
    background:
        radial-gradient(circle at 90% 10%,
            rgba(98, 178, 255, .34),
            transparent 25%),
        linear-gradient(110deg,
            #0738b5,
            #075cff);
    box-shadow:
        0 25px 58px rgba(7, 74, 205, .25);
}

.gugudan-bottom-cta>div>span {
    color: #a9caff;
}

.gugudan-bottom-cta h2 {
    margin: 10px 0 9px;
    color: #ffffff;
    font-size: clamp(30px, 3.2vw, 44px);
    line-height: 1.2;
    letter-spacing: -.055em;
    font-weight: 950;
}

.gugudan-bottom-cta h2 strong {
    color: #ffe36c;
}

.gugudan-bottom-cta p {
    margin: 0;
    color: #dbe9ff;
    font-size: 15px;
    line-height: 1.65;
    font-weight: 700;
}

.gugudan-bottom-actions {
    display: grid;
    gap: 10px;
    min-width: 270px;
}

.gugudan-yellow-button,
.gugudan-white-button {
    min-height: 57px;
    padding: 0 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    border-radius: 18px;
    font-size: 16px;
    font-weight: 950;
}

.gugudan-yellow-button {
    color: #241b00;
    background:
        linear-gradient(180deg,
            #ffe164,
            #ffc928);
    box-shadow:
        0 11px 0 rgba(96, 67, 0, .14),
        0 16px 25px rgba(0, 0, 0, .17);
}

.gugudan-yellow-button span {
    font-size: 27px;
}

.gugudan-white-button {
    color: var(--gg-blue);
    background: #ffffff;
}

.gugudan-footer {
    color: #bec8da;
    background: #081433;
}

.gugudan-footer>div {
    width: min(calc(100% - 48px), 1380px);
    margin: 0 auto;
    padding: 48px 0;
}

.gugudan-footer-brand {
    display: block;
    color: #ffffff;
    font-size: 24px;
    font-weight: 950;
}

.gugudan-footer p {
    margin: 9px 0 0;
    color: #93a2bd;
    font-size: 14px;
}

.gugudan-footer nav {
    margin-top: 23px;
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
}

.gugudan-footer nav a {
    color: #ffffff;
    font-size: 13px;
    font-weight: 850;
}

.gugudan-footer small {
    margin-top: 25px;
    display: block;
    color: #7f8da8;
    font-size: 12px;
}

@media (max-width: 1150px) {
    .gugudan-hero-inner {
        grid-template-columns: 1fr;
    }

    .gugudan-hero-copy {
        max-width: 780px;
    }

    .gugudan-hero-visual {
        min-height: 510px;
    }

    .gugudan-feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .gugudan-record-inner {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 900px) {
    .gugudan-menu-toggle {
        display: block;
    }

    .gugudan-site-nav {
        position: fixed;
        top: 82px;
        left: 16px;
        right: 16px;
        margin: 0;
        padding: 20px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
        border: 1px solid #dce7f7;
        border-radius: 22px;
        background: #ffffff;
        box-shadow:
            0 25px 65px rgba(8, 24, 78, .2);
    }

    .gugudan-site-nav.is-open {
        display: flex;
    }

    .gugudan-site-nav a {
        min-height: 48px;
        padding: 0 15px !important;
        display: flex;
        align-items: center;
        border-radius: 14px;
    }

    .gugudan-site-nav>a:not(.gugudan-nav-entry) {
        background: #f5f8fd;
    }

    .gugudan-feature-strip {
        grid-template-columns: 1fr;
    }

    .gugudan-feature-strip article {
        padding: 18px 4px;
    }

    .gugudan-feature-strip article+article {
        border-left: 0;
        border-top: 1px solid #e4ebf5;
    }

    .gugudan-use-grid {
        grid-template-columns: 1fr;
    }

    .gugudan-bottom-cta {
        grid-template-columns: 1fr;
    }

    .gugudan-bottom-actions {
        width: 100%;
        min-width: 0;
    }
}

@media (max-width: 680px) {

    .gugudan-header-inner,
    .gugudan-hero-inner,
    .gugudan-feature-strip,
    .gugudan-section,
    .gugudan-record-section,
    .gugudan-bottom-cta,
    .gugudan-footer>div {
        width: calc(100% - 28px);
    }

    .gugudan-header-inner {
        min-height: 72px;
    }

    .gugudan-brand-mark {
        width: 43px;
        height: 43px;
        border-radius: 14px;
    }

    .gugudan-brand-copy small {
        display: none;
    }

    .gugudan-brand-copy strong {
        font-size: 18px;
    }

    .gugudan-site-nav {
        top: 72px;
    }

    .gugudan-hero-inner {
        min-height: 0;
        padding: 50px 0 70px;
        gap: 20px;
    }

    .gugudan-hero h1 {
        margin-top: 23px;
        font-size: 42px;
    }

    .gugudan-hero-description {
        font-size: 18px;
    }

    .gugudan-hero-actions {
        align-items: stretch;
        flex-direction: column;
    }

    .gugudan-primary-button,
    .gugudan-secondary-button {
        width: 100%;
    }

    .gugudan-hero-visual {
        min-height: 420px;
    }

    .gugudan-main-card {
        padding: 22px;
        border-radius: 27px;
    }

    .gugudan-question {
        gap: 8px;
    }

    .gugudan-question span,
    .gugudan-question strong {
        min-width: 58px;
        height: 63px;
        border-radius: 18px;
        font-size: 31px;
    }

    .gugudan-question strong {
        min-width: 78px;
    }

    .gugudan-question i {
        font-size: 21px;
    }

    .gugudan-floating-number {
        width: 68px;
        height: 68px;
        border-radius: 21px;
        font-size: 17px;
    }

    .number-one {
        left: -4px;
    }

    .number-two {
        right: -5px;
    }

    .number-three {
        left: 4px;
    }

    .gugudan-floating-badge {
        top: 42px;
        right: -5px;
        min-height: 39px;
        padding: 0 12px;
        font-size: 11px;
    }

    .gugudan-feature-strip {
        margin-top: -18px;
        padding: 13px 20px;
    }

    .gugudan-section {
        padding-top: 80px;
    }

    .gugudan-section-heading {
        margin-bottom: 30px;
        text-align: left;
    }

    .gugudan-section-heading h2,
    .gugudan-record-copy h2 {
        font-size: 32px;
    }

    .gugudan-section-heading p,
    .gugudan-record-copy>p {
        font-size: 16px;
    }

    .gugudan-feature-grid {
        grid-template-columns: 1fr;
    }

    .gugudan-feature-card {
        min-height: 275px;
    }

    .gugudan-record-section {
        margin-top: 80px;
    }

    .gugudan-record-inner {
        padding: 34px 22px;
        gap: 35px;
        border-radius: 27px;
    }

    .gugudan-record-preview {
        padding: 22px;
    }

    .record-preview-bars>div {
        grid-template-columns: 78px 1fr 34px;
    }

    .gugudan-use-card {
        min-height: 365px;
        padding: 27px 22px;
    }

    .gugudan-use-section {
        padding-bottom: 80px;
    }

    .gugudan-bottom-cta {
        margin-bottom: 70px;
        padding: 34px 22px;
        border-radius: 26px;
    }

    .gugudan-bottom-cta h2 {
        font-size: 29px;
    }

    .gugudan-footer>div {
        padding: 39px 0;
    }
}