/* 基本変数 */
:root {
    --primary-color: #0f4c81;
    /* 信頼のネイビー */
    --accent-color: #f39c12;
    /* CTAのオレンジ */
    --text-color: #333333;
    --bg-light: #f9f9f9;
    --white: #ffffff;
    --error-color: #e74c3c;
    --line-height: 1.8;
}

/* ユーティリティ */
.u-ib {
    display: inline-block;
}

.u-pc-only {
    display: block;
}

.u-sp-only {
    display: none;
}

/* リセット & ベース */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans JP', "メイリオ", Meiryo, sans-serif;
    font-size: 18px;
    /* PC版デフォルトを大きめに */
    line-height: var(--line-height);
    color: var(--text-color);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    overflow-wrap: anywhere;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 共通コンポーネント */
.section {
    padding: 100px 0;
}

.section__title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 60px;
    color: var(--primary-color);
    position: relative;
    padding-bottom: 20px;
}

.section__title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--accent-color);
}

.bg-light {
    background-color: var(--bg-light);
}

.text-white {
    color: var(--white);
}

/* ボタン */
.btn {
    display: inline-block;
    padding: 22px 50px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.3rem;
    transition: all 0.3s ease;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    border: none;
}

.btn--primary {
    background-color: var(--accent-color);
    color: var(--white);
}

.btn--primary:hover {
    background-color: #e67e22;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.btn--tel {
    background-color: #ffffff;
    color: var(--primary-color);
    width: 100%;
    max-width: 550px;
    padding: 20px;
    border: 4px solid var(--primary-color);
}

.btn__sub {
    display: block;
    font-size: 1rem;
    margin-bottom: 5px;
}

.btn__main {
    display: block;
    font-size: 2.8rem;
    font-weight: 800;
    line-height: 1.1;
}

.btn__time {
    display: block;
    font-size: 0.9rem;
    margin-top: 5px;
}

/* ヘッダー */
.header {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header__logo {
    font-size: 1.6rem;
    font-weight: bold;
    color: var(--primary-color);
}

.header__tel {
    text-decoration: none;
    color: var(--primary-color);
    text-align: right;
}

.header__tel-label {
    display: block;
    font-size: 0.9rem;
}

.header__tel-number {
    display: block;
    font-size: 1.8rem;
    font-weight: 900;
}

/* ファーストビュー */
.fv {
    background: linear-gradient(rgba(15, 76, 129, 0.7), rgba(15, 76, 129, 0.7)), url('https://images.unsplash.com/photo-1593970486306-088718cda972?q=80&w=2070&auto=format&fit=crop') center/cover no-repeat;
    height: 90vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    color: var(--white);
}

.fv__content {
    max-width: 800px;
}

.fv__sub-copy {
    font-size: 1.6rem;
    margin-bottom: 25px;
    background-color: var(--accent-color);
    display: inline-block;
    padding: 8px 20px;
    border-radius: 5px;
    font-weight: bold;
}

.fv__main-copy {
    font-size: 4.5rem;
    line-height: 1.25;
    margin-bottom: 40px;
    font-weight: 900;
}

.fv__main-copy span {
    color: var(--accent-color);
}

.fv__features {
    list-style: none;
    display: flex;
    gap: 15px;
    margin-bottom: 50px;
}

.fv__features li {
    background-color: rgba(255, 255, 255, 0.25);
    padding: 10px 25px;
    border-radius: 40px;
    font-weight: bold;
    backdrop-filter: blur(5px);
}

/* お悩み提示 */
.problem__list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.problem__item {
    background-color: var(--white);
    padding: 35px;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.06);
    border-left: 12px solid var(--error-color);
    font-size: 1.3rem;
    font-weight: bold;
}

.problem__summary {
    text-align: center;
    margin-top: 60px;
    font-size: 2.22rem;
    font-weight: 900;
    color: var(--error-color);
}

/* 特徴 */
.feature__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.feature__item {
    background-color: var(--white);
    padding: 50px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.05);
}

.feature__icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.feature__item h3 {
    color: var(--primary-color);
    margin-bottom: 20px;
    font-size: 1.6rem;
    font-weight: 800;
}

/* 他社との違い */
.diff__table-wrapper {
    overflow-x: auto;
}

.diff__table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--white);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
}

.diff__table th,
.diff__table td {
    border: 1px solid #eeeeee;
    padding: 25px;
    text-align: center;
}

.diff__table thead th {
    background-color: #f0f4f8;
    color: var(--primary-color);
    font-weight: 800;
}

.diff__table .diff__highlight {
    background-color: #fdf5e6;
    color: var(--primary-color);
    font-weight: bold;
    border: 3px solid var(--accent-color);
}

.diff__table thead th.diff__highlight {
    background-color: var(--accent-color);
    color: var(--white);
    font-size: 1.4rem;
}

/* 買取の流れ */
.flow__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.flow__item {
    text-align: center;
    position: relative;
}

.flow__num {
    width: 60px;
    height: 60px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.8rem;
    font-weight: 900;
    margin: 0 auto 20px;
}

.flow__item h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.flow__foot {
    text-align: center;
    margin-top: 60px;
    background-color: var(--accent-color);
    color: var(--white);
    padding: 20px;
    border-radius: 10px;
    font-size: 1.4rem;
    font-weight: bold;
}

/* FAQ */
.faq__list {
    max-width: 800px;
    margin: 0 auto;
}

.faq__item {
    margin-bottom: 30px;
    border-bottom: 2px solid var(--bg-light);
    padding-bottom: 30px;
}

.faq__q {
    font-weight: 900;
    font-size: 1.4rem;
    color: var(--primary-color);
    margin-bottom: 15px;
    position: relative;
    padding-left: 45px;
}

.faq__q::before {
    content: 'Q';
    position: absolute;
    left: 0;
    top: -5px;
    font-size: 2rem;
    color: var(--accent-color);
}

.faq__a {
    padding-left: 45px;
    position: relative;
}

.faq__a::before {
    content: 'A';
    position: absolute;
    left: 0;
    top: -5px;
    font-size: 1.8rem;
    color: var(--primary-color);
    font-weight: 800;
}

/* 会社紹介 */
.about__flex {
    display: flex;
    gap: 50px;
    align-items: flex-start;
}

.about__img {
    flex: 1;
}

.about__img img {
    border-radius: 15px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.about__info {
    flex: 1.5;
}

.about__info h3 {
    font-size: 2rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.about__lead {
    font-size: 1.4rem;
    font-weight: bold;
    margin-bottom: 25px;
    color: var(--text-color);
    line-height: 1.4;
}

.about__table {
    width: 100%;
    margin-top: 30px;
    border-top: 2px solid var(--primary-color);
}

.about__table th,
.about__table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

.about__table th {
    width: 120px;
    color: var(--primary-color);
}

/* お問い合わせ */
.contact {
    background-color: var(--primary-color);
    text-align: center;
}

.contact__desc {
    color: var(--white);
    margin-bottom: 50px;
    font-size: 1.4rem;
}

.contact__form-box {
    background-color: var(--white);
    max-width: 800px;
    margin: 50px auto 0;
    padding: 60px;
    border-radius: 20px;
    text-align: left;
}

.form__lead {
    font-size: 1.5rem;
    font-weight: bold;
    text-align: center;
    margin-bottom: 40px;
    color: var(--primary-color);
}

.form__group {
    margin-bottom: 25px;
}

.form__group label {
    display: block;
    font-weight: bold;
    margin-bottom: 10px;
}

.form__group label span {
    background-color: var(--error-color);
    color: var(--white);
    font-size: 0.8rem;
    padding: 2px 8px;
    border-radius: 3px;
    margin-left: 10px;
}

.form__group input,
.form__group textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 1.1rem;
    font-family: inherit;
}

.form__group input:focus,
.form__group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.btn--submit {
    width: 100%;
    margin-top: 20px;
}

/* フッター */
.footer {
    padding: 60px 0;
    text-align: center;
    background-color: #1a1a1a;
    color: var(--white);
}

/* スマホ対応 */
@media (max-width: 900px) {
    .flow__grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px 20px;
    }
}

@media (max-width: 768px) {
    body {
        font-size: 16px;
    }

    .section {
        padding: 60px 0;
    }

    .section__title {
        font-size: 2rem;
    }

    .fv {
        height: auto;
        padding: 80px 0;
    }

    .fv__main-copy {
        font-size: 2.8rem;
    }

    .fv__features {
        flex-wrap: wrap;
    }

    .problem__list {
        grid-template-columns: 1fr;
    }

    .feature__grid {
        grid-template-columns: 1fr;
    }

    .header .container {
        flex-direction: column;
        gap: 10px;
    }

    .header__logo {
        font-size: 1.4rem;
    }

    .header__tel {
        text-align: center;
    }

    .header__tel-number {
        font-size: 1.5rem;
    }

    .btn__main {
        font-size: 2.2rem;
    }

    .about__flex {
        flex-direction: column;
    }

    .contact__form-box {
        padding: 30px 20px;
    }

    .diff__table th,
    .diff__table td {
        padding: 15px 10px;
        font-size: 0.9rem;
    }

    .u-pc-only {
        display: none;
    }

    .u-sp-only {
        display: block;
    }
}

@media (max-width: 480px) {
    .fv__main-copy {
        font-size: 2.22rem;
    }

    .btn__main {
        font-size: 1.8rem;
    }

    .flow__grid {
        grid-template-columns: 1fr;
    }
}