@charset "UTF-8";
@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@100;300;400;500;900&display=swap");

/*
    共通設定
*/
:root {
    --color-transparent: transparent;
    --color-pink: #ffebee;
    --color-red: #ff4d4f;
    --color-lightdarkred: #d32f2f;
    --color-morelightblue: #e3f2fd;
    --color-lightblue: #aed9ff;
    --color-lightgrayblue: #a5b2c0;
    --color-blue: #4095f6;
    --color-green: #4caf50;
    --color-darkgreen: #397d3c;
    --color-darkblue: #1f1f33;
    --color-darklightpink: #f5f5f5;
    --color-darkred: #616161;
    --color-lightpurple: #f3e5f5;
    --color-purple: #7b1fa2;
    --color-white: #ffffff;
    --color-morelittlelightgray: #f6f6f6;
    --color-littlelightgray: #eeeeee;
    --color-darklightgray: #cecece;
    --color-gray: #979797;
    --color-littledarkgray: #868686;
    --color-darkgray: #585858;
    --color-black: #0e0e0e;
    --color-mostlightbrown: #ffeccf;
    --color-morelightbrown: #cec4b6;
    --color-littlelightbrown:#b99152;
    --color-littlebrown: #9b6d2e;
    --color-brown: #7a4e15;
    --color-littletransparent-white: rgba(255, 255, 255, 0.4);
    --color-transparent-white: rgba(255, 255, 255, 0.8);
    --color-transparent-littlewhite: rgba(220, 220, 220, 0.8);
    --color-littletransparent-gray: rgba(179, 179, 179, 0.4);
    --color-transparent-darkgray: rgba(31, 31, 51, 0.8);
    --color-transparent-brown: rgba(163, 115, 37, 0.9);
    --color-gradient-gray: linear-gradient(#cecece 10%, #9b9b9b 90%);
    --color-gradient-darkgray: linear-gradient(#b1b1b1 10%, #8b8b8b 90%);
    --color-gradient-brown: linear-gradient(#e2b679 10%, #9b6d2e 90%);
    --color-gradient-littledarkbrown: linear-gradient(#dfaa5f 10%, #99651d 90%);
    --color-gradient-red: linear-gradient(#ff4d4f 10%, #c0392b 90%);

    /* 角丸のサイズ */
    --border-radius-zero: 0;
    --border-radius-moremostsmall: 2px;
    --border-radius-mostsmall: 4px;
    --border-radius-moresmall: 16px;
    --border-radius-small: 18px;
    --border-radius-littlebigsmall: 20px;
    --border-radius-bigsmall: 24px;
    --border-radius-moresmallmedium: 30px;
    --border-radius-smallmedium: 32px;
    --border-radius-medium: 40px;

    /* フォント */
    --notosans-jp: "Noto Sans JP", sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 62.5%;
    width: 100%;
    height: 100%;
}

body {
    font-family: "Noto Sans JP", sans-serif;
    height: auto;
    min-height: 100%;
    margin: 0 auto;
    width: 100%;
    min-width: 100%;
    display: flex;
    justify-content: center;
    padding: 16px;
    color: var(--color-black);
    font-family: var(--notosans-jp);
    font-size: 1.6rem;
    font-weight: 300;
    line-height: 1.5;
    letter-spacing: 0.1em;
    background-color: var(--color-blue);
    box-sizing: border-box;
}

/* Background */
.landing-background {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    background-color: #aed9ff;
    overflow: hidden;
    z-index: 0;
}

.landing-background img {
    position: relative;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.8;
    z-index: 0;
}

.landing-background-cover {
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #a5b2c0;
    opacity: 1;
    mix-blend-mode: color-burn;
    z-index: 1;
}

/* Landing Container */
.landing {
    position: relative;
    min-height: 100vh;
    color: white;
    z-index: 1;
}

/* Hero Section */
.hero {
    padding: 60px 0;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;

    @media (min-width: 768px) {
        padding: 100px 20px;
    }

    & p {
        font-size: 1.8rem;
        margin-bottom: 30px;
        opacity: 0.9;
        font-weight: 500;

        @media (min-width: 768px) {
            font-size: 2.2rem;
            margin-bottom: 40px;
        }
    }
}

.hero-logo {
    display: flex;
    flex-direction: column;
    width: auto;
    align-items: center;
    gap: 12px;
    margin: 0 auto 24px;
}

.hero-logomark {
    margin: auto;
    position: relative;
    width: 100%;
    max-width: 50px;
    height: auto;
    object-fit: contain;

    @media (min-width: 768px) {
        max-width: 70px;
    }
}

.hero-logotype {
    margin: 0;
    width: 100%;
    max-width: 300px;
    height: auto;
    object-fit: contain;

    @media (min-width: 768px) {
        max-width: 500px;
    }
}

/* CTA Buttons */
.cta-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;

    @media (min-width: 768px) {
        gap: 20px;
    }
}

.btn {
    position: relative;
    padding: 12px 30px;
    border: 1px solid #9b6d2e;
    border-radius: 50vw;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.4rem;
    letter-spacing: 0.1em;
    display: inline-block;
    cursor: pointer;
    isolation: isolate;
    overflow: hidden;
    transition: transform 0.3s cubic-bezier(0.25, 1, 0.5, 1), filter 0.3s ease;

    @media (min-width: 768px) {
        padding: 15px 40px;
        font-size: 1.6rem;
    }

    &::before {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        opacity: 0;
        z-index: -1;
        transition: opacity 0.3s ease;
    }

    &:hover {
        transform: translateY(-2px);
        filter: drop-shadow(10px 10px 10px #1f1f33);

        &::before {
            opacity: 1;
        }
    }
}

.btn-primary {
    background: linear-gradient(#e2b679 10%, #9b6d2e 90%);
    color: #eeeeee;
    border: 1px solid #9b6d2e;
    text-shadow: 1px 1px 1px rgba(255, 255, 255, 0.8);

    &::before {
        background: linear-gradient(#dfaa5f 10%, #99651d 90%);
    }
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-large {
    font-size: 1.6rem;
    padding: 16px 40px;

    @media (min-width: 768px) {
        font-size: 1.8rem;
        padding: 20px 60px;
    }
}

/* About, Values, Experience, Feedback Sections */
.about,
.values,
.experience,
.feedback {
    padding: 50px 0;
    max-width: 1000px;
    margin: 0 auto;

    @media (min-width: 768px) {
        padding: 80px 20px;
    }
}

.about h2,
.values h2,
.experience h2,
.feedback h2 {
    text-align: center;
    font-size: 2.4rem;
    margin-bottom: 20px;
    font-weight: 700;
    letter-spacing: 0.1em;

    @media (min-width: 768px) {
        font-size: 3.2rem;
        margin-bottom: 30px;
    }
}

.about p,
.experience p,
.feedback p {
    font-size: 1.5rem;
    line-height: 1.6;
    opacity: 0.95;
    font-weight: 500;
    text-align: center;

    @media (min-width: 768px) {
        font-size: 1.8rem;
        line-height: 1.8;
    }
}

/* Value List */
.value-list {
    display: flex;
    flex-direction: column;
    gap: 20px;

    @media (min-width: 768px) {
        gap: 30px;
    }
}

.value-item {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: 20px;
    border-radius: 30px;
    border: 1px dashed #9b6d2e;

    @media (min-width: 768px) {
        padding: 30px;
        border-radius: 40px;
    }
}

.value-item h3 {
    font-size: 1.8rem;
    margin-bottom: 12px;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: #e2b679;

    @media (min-width: 768px) {
        font-size: 2.0rem;
        margin-bottom: 15px;
    }
}

.value-item p {
    font-size: 1.4rem;
    line-height: 1.5;
    opacity: 0.9;
    font-weight: 500;
    text-align: left;

    @media (min-width: 768px) {
        font-size: 1.6rem;
        line-height: 1.6;
    }
}

/* Feedback Box */
.feedback-box {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: 20px;
    border-radius: 30px;
    border: 1px dashed #9b6d2e;
    text-align: center;
    margin-top: 20px;

    @media (min-width: 768px) {
        padding: 30px;
        border-radius: 40px;
        margin-top: 30px;
    }
}

.feedback-text {
    font-size: 1.5rem;
    margin-bottom: 12px;
    font-weight: 600;

    @media (min-width: 768px) {
        font-size: 1.8rem;
        margin-bottom: 15px;
    }
}

.feedback-link {
    position: relative;
    display: inline-block;
    color: white;
    text-decoration: none;
    font-weight: 700;
    padding: 10px 20px;
    border-radius: 30px;
    background: linear-gradient(#e2b679 10%, #9b6d2e 90%);
    border: 1px solid #9b6d2e;
    transition: transform 0.3s cubic-bezier(0.25, 1, 0.5, 1), filter 0.3s ease;
    overflow: hidden;
    font-size: 1.4rem;

    @media (min-width: 768px) {
        padding: 12px 24px;
        font-size: 1.6rem;
    }

    &::before {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: linear-gradient(#dfaa5f 10%, #99651d 90%);
        opacity: 0;
        z-index: -1;
        transition: opacity 0.3s ease;
    }

    &:hover {
        transform: translateY(-2px);
        filter: drop-shadow(10px 10px 10px #1f1f33);

        &::before {
            opacity: 1;
        }
    }
}

/* Features Section */
.features {
    padding: 50px 0;
    max-width: 1200px;
    margin: 0 auto;

    @media (min-width: 768px) {
        padding: 80px 20px;
    }
}

.features h2 {
    text-align: center;
    font-size: 2.4rem;
    margin-bottom: 30px;
    font-weight: 700;
    letter-spacing: 0.1em;

    @media (min-width: 768px) {
        font-size: 3.2rem;
        margin-bottom: 50px;
    }
}

.feature-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;

    @media (min-width: 768px) {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 30px;
    }
}

.feature-card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: 20px;
    border-radius: 30px;
    text-align: center;
    border: 1px dashed #9b6d2e;

    @media (min-width: 768px) {
        padding: 30px;
        border-radius: 40px;
    }
}

.feature-card h3 {
    font-size: 1.8rem;
    margin-bottom: 12px;
    font-weight: 700;
    letter-spacing: 0.1em;

    @media (min-width: 768px) {
        font-size: 2.2rem;
        margin-bottom: 15px;
    }
}

.feature-card p {
    opacity: 0.9;
    line-height: 1.5;
    font-weight: 500;
    font-size: 1.3rem;

    @media (min-width: 768px) {
        line-height: 1.6;
        font-size: 1.5rem;
    }
}

/* How It Works Section */
.how-it-works {
    padding: 50px 20px;
    max-width: 1000px;
    margin: 0 auto;

    @media (min-width: 768px) {
        padding: 80px 20px;
    }
}

.how-it-works h2 {
    text-align: center;
    font-size: 2.4rem;
    margin-bottom: 30px;
    font-weight: 700;
    letter-spacing: 0.1em;

    @media (min-width: 768px) {
        font-size: 3.2rem;
        margin-bottom: 50px;
    }
}

.steps {
    display: flex;
    flex-direction: column;
    gap: 30px;

    @media (min-width: 768px) {
        flex-direction: row;
        justify-content: space-around;
        flex-wrap: wrap;
    }
}

.step {
    text-align: center;
    flex: 1;
    min-width: 200px;
}

.step-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(#e2b679 10%, #9b6d2e 90%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    font-weight: 700;
    margin: 0 auto 15px;
    border: 1px solid #9b6d2e;

    @media (min-width: 768px) {
        width: 60px;
        height: 60px;
        font-size: 2.2rem;
        margin: 0 auto 20px;
    }
}

.step h3 {
    font-size: 1.6rem;
    margin-bottom: 8px;
    font-weight: 700;
    letter-spacing: 0.1em;

    @media (min-width: 768px) {
        font-size: 1.9rem;
        margin-bottom: 10px;
    }
}

.step p {
    opacity: 0.9;
    font-weight: 500;
    font-size: 1.3rem;

    @media (min-width: 768px) {
        font-size: 1.5rem;
    }
}

/* CTA Section */
.cta-section {
    padding: 60px 0;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;

    @media (min-width: 768px) {
        padding: 100px 20px;
    }
}

.cta-section h2 {
    font-size: 2.4rem;
    margin-bottom: 15px;
    font-weight: 700;
    letter-spacing: 0.1em;

    @media (min-width: 768px) {
        font-size: 3.2rem;
        margin-bottom: 20px;
    }
}

.cta-section p {
    font-size: 1.6rem;
    margin-bottom: 30px;
    opacity: 0.9;
    font-weight: 500;

    @media (min-width: 768px) {
        font-size: 1.9rem;
        margin-bottom: 40px;
    }
}

.cta-buttons-large {
    display: flex;
    flex-direction: column;
    gap: 20px;
    align-items: center;

    @media (min-width: 768px) {
        gap: 24px;
    }
}

/* Footer */
.landing-footer {
    padding: 30px 0;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.3);

    @media (min-width: 768px) {
        padding: 40px 20px;
    }
}

.landing-footer a {
    color: white;
    text-decoration: none;
    margin: 0 10px;
    opacity: 0.8;
    transition: opacity 0.2s;
    font-weight: 600;
    font-size: 1.3rem;

    @media (min-width: 768px) {
        margin: 0 20px;
        font-size: 1.5rem;
    }

    &:hover {
        opacity: 1;
    }
}

.landing-copyrights {
    margin: 20px auto 8px;
    display: block;
    color: var(--color-littlelightgray);
    font-size: 1.4rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-align: center;

    @media (min-width: 768px) {
        margin: 16px auto 0;
    }
}

/* Error Page */
.error-page {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    text-align: center;
    padding: 20px;
}

.error-code {
    font-size: 8rem;
    font-weight: 900;
    margin-bottom: 20px;
    color: var(--color-white);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);

    @media (min-width: 768px) {
        font-size: 12rem;
        margin-bottom: 30px;
    }
}

.error-title {
    font-size: 2.4rem;
    margin-bottom: 20px;
    font-weight: 700;
    letter-spacing: 0.1em;

    @media (min-width: 768px) {
        font-size: 3.2rem;
        margin-bottom: 30px;
    }
}

.error-message {
    font-size: 1.5rem;
    line-height: 1.6;
    opacity: 0.95;
    font-weight: 500;
    margin-bottom: 40px;
    max-width: 600px;

    @media (min-width: 768px) {
        font-size: 1.8rem;
        line-height: 1.8;
        margin-bottom: 50px;
    }
}

.error-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;

    @media (min-width: 768px) {
        gap: 20px;
    }
}