@charset "UTF-8";
/* ==================================================
   01. カラー・基本設定
================================================== */
:root {
    --main-green: #3f6253;
    --dark-green: #29463a;
    --light-green: #f1f5f2;
    --cream: #faf9f6;
    --white: #ffffff;
    --text: #2f3432;
    --sub-text: #666b68;
    --border: #dedfda;
    --accent: #d98245;
    --accent-hover: #bd6e36;
    --max-width: 1100px;
}
* {
    box-sizing: border-box;
}
html {
    margin: 0;
    padding: 0;
    scroll-behavior: smooth;
}
body {
    margin: 0;
    padding: 0;
    background-color: var(--white);
    color: var(--text);
    font-family:
        -apple-system,
        BlinkMacSystemFont,
        "Helvetica Neue",
        "Yu Gothic",
        "YuGothic",
        "Noto Sans JP",
        sans-serif;
    font-size: 16px;
    line-height: 1.9;
    letter-spacing: 0.03em;
}
a {
    color: inherit;
    text-decoration: none;
}
img {
    max-width: 100%;
    height: auto;
}
ul,
ol {
    margin: 0;
    padding: 0;
}
/* ==================================================
   02. ヘッダー
================================================== */
header {
    position: sticky;
    top: 0;
    z-index: 100;
    width: 100%;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 max(30px, calc((100% - var(--max-width)) / 2));
    background-color: rgba(255, 255, 255, 0.96);
    border-bottom: 1px solid var(--border);
}
.header-logo {
    display: flex;
    align-items: center;
    gap: 15px;
}
.header-title {
    color: var(--text);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    white-space: nowrap;
}
.tanuki {
    display: block;
    width: auto;
    height: 64px;
    position: static;
}
nav {
    display: flex;
    align-items: center;
    gap: 35px;
    background: none;
}
nav a {
    width: auto;
    height: auto;
    margin: 0;
    padding: 10px 0;
    color: var(--text);
    font-size: 0.95rem;
    font-weight: 500;
    transition: 0.2s;
}
nav a:hover {
    color: var(--main-green);
    background: none;
    transform: none;
    scale: 1;
}
/* ヘッダーのお問い合わせ */
nav .contact-btn {
    padding: 11px 24px;
    background-color: var(--main-green);
    color: var(--white);
    border-radius: 4px;
    font-weight: 600;
}
nav .contact-btn:hover {
    background-color: var(--dark-green);
    color: var(--white);
}
/* 外部リンクアイコン */
.external-link-icon {
    width: 14px;
    height: 14px;
    margin-left: 6px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    vertical-align: -2px;
}
/* ==================================================
03. 共通セクション
================================================== */
.main-page {
    width: 100%;
}
.section {
    width: 100%;
    padding: 100px max(30px, calc((100% - var(--max-width)) / 2));
}
.section:nth-of-type(even) {
    background-color: var(--cream);
}
.section-label {
    margin: 0 0 8px;
    color: var(--main-green);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-align: center;
}
.section-title {
    margin: 0 0 50px;
    color: var(--text);
    font-size: 2rem;
    font-weight: 600;
    line-height: 1.5;
    letter-spacing: 0.04em;
    text-align: center;
}
.section-description {
    max-width: 720px;
    margin: -25px auto 50px;
    color: var(--sub-text);
    text-align: center;
}
/* ==================================================
04. ファーストビュー
================================================== */
.hero {
    min-height: 620px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 50px;
    padding:
        100px
        max(30px, calc((100% - var(--max-width)) / 2));
    background-color: var(--cream);
}
.hero-text {
    flex: 1;
    max-width: 750px;
}
.hero-subtitle {
    margin: 0 0 20px;
    color: var(--main-green);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.08em;
}
.hero h1 {
    margin: 0 0 28px;
    color: var(--text);
    font-size: clamp(2.1rem, 3.5vw, 3rem);
    font-weight: 600;
    line-height: 1.45;
    letter-spacing: 0.04em;
}
.hero-description {
    max-width: 600px;
    margin-bottom: 30px;
    color: var(--sub-text);
    font-size: 1.05rem;
}
.hero-points {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 35px;
}
.hero-points span {
    padding: 7px 14px;
    background-color: var(--white);
    border: 1px solid var(--border);
    border-radius: 3px;
    color: var(--dark-green);
    font-size: 0.85rem;
}
.hero-image {
    width: 28%;
    max-width: 300px;
    display: flex;
    justify-content: center;
}
.hero-image img {
    width: 100%;
}
/* ==================================================
   05. 共通お問い合わせボタン
================================================== */
.contact-btn {
    display: inline-block;
    padding: 15px 30px;
    background-color: var(--accent);
    color: var(--white);
    border-radius: 4px;
    font-weight: 600;
    letter-spacing: 0.03em;
    transition:
        background-color 0.2s,
        transform 0.2s;
}
.contact-btn:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
}
/* ==================================================
   06. お悩み
================================================== */
.worries {
    background-color: var(--white);
}
.worry-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.worry-card {
    padding: 30px;
    background-color: var(--white);
    border: 1px solid var(--border);
}
.worry-card h3 {
    margin: 0 0 15px;
    color: var(--dark-green);
    font-size: 1.05rem;
    font-weight: 600;
}
.worry-card p {
    margin: 0;
    color: var(--sub-text);
    font-size: 0.95rem;
}
/* ==================================================
   07. 特徴
================================================== */
.features {
    background-color: var(--light-green);
}
.feature-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}
.feature-card {
    padding: 40px 32px;
    background-color: var(--white);
    border: 1px solid #e2e7e3;
}
.feature-number {
    margin: 0 0 15px;
    color: var(--main-green);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.12em;
}
.feature-card h3 {
    margin: 0 0 20px;
    font-size: 1.15rem;
    font-weight: 600;
    line-height: 1.6;
}
.feature-card p:last-child {
    margin: 0;
    color: var(--sub-text);
    font-size: 0.95rem;
}
/* ==================================================
   08. 授業の流れ
================================================== */
.lesson-flow {
    max-width: 850px;
    margin: 0 auto;
}
.lesson-step {
    position: relative;
    padding: 25px 20px 25px 110px;
    border-bottom: 1px solid var(--border);
}
.lesson-step:first-child {
    border-top: 1px solid var(--border);
}
.lesson-step span {
    position: absolute;
    top: 28px;
    left: 10px;
    color: var(--main-green);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
}
.lesson-step h3 {
    margin: 0 0 8px;
    font-size: 1.05rem;
    font-weight: 600;
}
.lesson-step p {
    margin: 0;
    color: var(--sub-text);
    font-size: 0.95rem;
}
/* ==================================================
   09. 対応内容
================================================== */
.course {
    background-color: var(--cream);
}
.course-info {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.course-box {
    padding: 35px;
    background-color: var(--white);
    border: 1px solid var(--border);
}
.course-box h3 {
    margin: 0 0 20px;
    padding-bottom: 15px;
    color: var(--dark-green);
    border-bottom: 1px solid var(--border);
    font-size: 1.05rem;
}
.course-box p {
    margin: 0;
}
.course-box ul {
    padding-left: 20px;
}
/* ---------- 対応教科 ---------- */
.subject-list {
    display: flex;
    flex-direction: column;
}
.subject-item {
    padding: 18px 0;
    border-bottom: 1px solid var(--border);
}
.subject-item:first-child {
    padding-top: 0;
}
.subject-item:last-child {
    padding-bottom: 0;
    border-bottom: none;
}
.subject-name {
    display: inline-block;
    margin-bottom: 5px;
    color: var(--dark-green);
    font-size: 1rem;
    font-weight: 600;
}
.subject-item p {
    margin: 0;
    color: var(--sub-text);
    font-size: 0.95rem;
}
/* ==================================================
   10. 講師紹介
================================================== */
.teacher-card {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 60px;
    padding: 50px;
    background-color: var(--white);
    border: 1px solid var(--border);
}
.teacher-image {
    flex-shrink: 0;
    width: 260px;
}
.teacher-profile {
    flex: 1;
}
.teacher-profile h3 {
    margin: 0 0 25px;
    font-size: 1.4rem;
    font-weight: 600;
}
.teacher-profile dl {
    display: grid;
    grid-template-columns: 100px 1fr;
    margin-bottom: 30px;
}
.teacher-profile dt,
.teacher-profile dd {
    margin: 0;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
}
.teacher-profile dt {
    color: var(--sub-text);
    font-size: 0.9rem;
}
.teacher-profile h4 {
    margin-bottom: 10px;
    color: var(--dark-green);
}
.teacher-profile p {
    margin: 0;
    color: var(--sub-text);
}
/* ==================================================
   11. 保護者サポート
================================================== */
.parent-support {
    background-color: var(--light-green);
}
.support-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}
.support-card {
    padding: 35px;
    background-color: var(--white);
}
.support-card h3 {
    margin: 0 0 15px;
    color: var(--dark-green);
    font-size: 1.1rem;
}
.support-card p {
    margin: 0;
    color: var(--sub-text);
}
/* ==================================================
   12. 料金
================================================== */
.price-table {
    max-width: 700px;
    margin: 0 auto;
}
.price-row {
    display: flex;
    border-top: 1px solid var(--border);
}
.price-row:last-child {
    border-bottom: 1px solid var(--border);
}
.price-name {
    width: 40%;
    padding: 20px;
    background-color: var(--cream);
    font-weight: 600;
}
.price-value {
    width: 60%;
    padding: 20px;
    background-color: var(--white);
}
.price-note {
    max-width: 700px;
    margin: 20px auto 0;
    color: var(--sub-text);
    font-size: 0.85rem;
}
/* ==================================================
   13. 無料体験
================================================== */
.trial {
    background-color: var(--cream);
    text-align: center;
}
.trial-flow {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
    margin-bottom: 40px;
    text-align: left;
}
.trial-step {
    padding: 30px 25px;
    background-color: var(--white);
    border: 1px solid var(--border);
}
.trial-step span {
    color: var(--main-green);
    font-size: 0.8rem;
    font-weight: 700;
}
.trial-step h3 {
    margin: 12px 0;
    font-size: 1rem;
}
.trial-step p {
    margin: 0;
    color: var(--sub-text);
    font-size: 0.9rem;
}
.trial-message {
    max-width: 700px;
    margin: 0 auto 30px;
    color: var(--sub-text);
}
/* ==================================================
   14. 入塾までの流れ
================================================== */
.admission-flow {
    max-width: 850px;
    margin: 0 auto;
    list-style: none;
    counter-reset: none;
}
.admission-flow li {
    position: relative;
    padding: 30px 30px 30px 130px;
    border-top: 1px solid var(--border);
}
.admission-flow li:last-child {
    border-bottom: 1px solid var(--border);
}
.admission-flow span {
    position: absolute;
    left: 20px;
    top: 34px;
    color: var(--main-green);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
}
.admission-flow h3 {
    margin: 0 0 8px;
    font-size: 1.05rem;
}
.admission-flow p {
    margin: 0;
    color: var(--sub-text);
}
/* ==================================================
   15. FAQ
================================================== */
.faq {
    background-color: var(--cream);
}
.faq-list {
    max-width: 850px;
    margin: 0 auto;
    border-top: 1px solid var(--border);
}
.faq details {
    border-bottom: 1px solid var(--border);
}
.faq summary {
    position: relative;
    padding: 25px 50px 25px 45px;
    cursor: pointer;
    font-weight: 500;
    list-style: none;
}
.faq summary::-webkit-details-marker {
    display: none;
}
.faq summary::before {
    content: "Q";
    position: absolute;
    left: 10px;
    color: var(--main-green);
    font-weight: 700;
}
.faq summary::after {
    content: "＋";
    position: absolute;
    right: 15px;
    color: var(--sub-text);
    font-size: 1.3rem;
    font-weight: 300;
}
.faq details[open] summary::after {
    content: "−";
}
.faq details p {
    position: relative;
    margin: 0;
    padding: 0 50px 25px 45px;
    color: var(--sub-text);
}
.faq details p::before {
    content: "A";
    position: absolute;
    left: 10px;
    color: var(--accent);
    font-weight: 700;
}
/* ==================================================
16. 最後のお問い合わせ
================================================== */
.final-cta {
    padding: 100px 30px;
    background-color: var(--main-green);
    color: var(--white);
    text-align: center;
}
.final-cta h2 {
    margin: 0 0 25px;
    font-size: 2rem;
    font-weight: 600;
}
.final-cta p {
    margin-bottom: 25px;
    color: #edf2ef;
}
.final-cta .contact-btn {
    margin-top: 10px;
    background-color: var(--white);
    color: var(--dark-green);
    border: 1px solid var(--white);
}
.final-cta .contact-btn:hover {
    background-color: var(--cream);
    transform: translateY(-2px);
}
.final-cta .cta-note {
    margin: 18px 0 0;
    font-size: 0.85rem;
    opacity: 0.85;
}
/* ==================================================
17. フッター
================================================== */
footer {
    width: 100%;
    height: auto;
    margin: 0;
    padding: 60px 30px 0;
    background-color: #263a32;
    color: var(--white);
    text-align: center;
}
footer h2 {
    margin-top: 0;
    font-size: 1.2rem;
    font-weight: 500;
    letter-spacing: 0.08em;
}
footer table {
    margin: 0 auto 50px;
}
.information th,
.information td {
    padding: 10px 20px;
    border: none;
    border-bottom: 1px solid #52645c;
}
.information th {
    font-weight: 400;
    color: #cbd4d0;
}
.information td {
    color: var(--white);
}
.copyright {
    width: 100%;
    margin: 0;
    padding: 20px;
    background: none;
    border-top: 1px solid #52645c;
    color: #cbd4d0;
}

/* ==================================================
   コース・料金ページ
================================================== */
/* ---------- ページタイトル ---------- */
.page-hero {
    padding: 110px max(30px, calc((100% - var(--max-width)) / 2));
    background-color: var(--cream);
    text-align: center;
}
.page-hero .section-label {
    margin-bottom: 12px;
}
.page-hero h1 {
    margin: 0 0 25px;
    color: var(--text);
    font-size: clamp(2.2rem, 4vw, 3rem);
    font-weight: 600;
    letter-spacing: 0.05em;
}
.page-hero p:last-child {
    max-width: 700px;
    margin: 0 auto;
    color: var(--sub-text);
}
/* ---------- コース ---------- */
.course-introduction {
    background-color: var(--white);
}
.course-detail-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}
.course-detail-card {
    padding: 40px 32px;
    border: 1px solid var(--border);
    background-color: var(--white);
}
.course-detail-number {
    margin: 0 0 15px;
    color: var(--main-green);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.12em;
}
.course-detail-card h3 {
    margin: 0 0 20px;
    color: var(--text);
    font-size: 1.15rem;
    font-weight: 600;
}
.course-detail-card p:last-child {
    margin: 0;
    color: var(--sub-text);
    font-size: 0.95rem;
}
/* ---------- 対応教科 ---------- */
.course-subjects {
    background-color: var(--light-green);
}
.subject-detail-list {
    max-width: 900px;
    margin: 0 auto;
    border-top: 1px solid var(--border);
}
.subject-detail-card {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 50px;
    padding: 40px 20px;
    border-bottom: 1px solid var(--border);
}
.subject-detail-heading {
    border-right: 1px solid var(--border);
}
.subject-detail-en {
    display: block;
    margin-bottom: 5px;
    color: var(--main-green);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.14em;
}
.subject-detail-heading h3 {
    margin: 0;
    color: var(--text);
    font-size: 1.5rem;
    font-weight: 600;
}
.subject-detail-content p {
    margin: 0;
    color: var(--sub-text);
}
.subject-detail-content .subject-range {
    margin-bottom: 12px;
    color: var(--dark-green);
    font-size: 1.05rem;
    font-weight: 600;
}
/* ---------- 料金 ---------- */
.course-price {
    background-color: var(--white);
}
.course-price-box {
    max-width: 750px;
    margin: 0 auto;
    border-top: 1px solid var(--border);
}
.course-price-row {
    display: grid;
    grid-template-columns: 220px 1fr;
    border-bottom: 1px solid var(--border);
}
.course-price-name {
    display: flex;
    align-items: center;
    padding: 25px;
    background-color: var(--cream);
    font-weight: 600;
}
.course-price-value {
    padding: 25px 30px;
}
.course-price-value strong {
    color: var(--text);
    font-size: 1.1rem;
    font-weight: 600;
}
.course-price-value p {
    margin: 5px 0 0;
    color: var(--sub-text);
    font-size: 0.85rem;
}
.course-price-note {
    max-width: 750px;
    margin: 18px auto 0;
    color: var(--sub-text);
    font-size: 0.85rem;
}
/* ---------- 授業回数・学習プラン ---------- */
.lesson-plan {
    background-color: var(--cream);
}
.lesson-plan-list {
    max-width: 800px;
    margin: 0 auto;
    border-top: 1px solid var(--border);
}
.lesson-plan-item {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 20px;
    padding: 30px 10px;
    border-bottom: 1px solid var(--border);
}
.lesson-plan-item > span {
    color: var(--main-green);
    font-size: 0.8rem;
    font-weight: 700;
}
.lesson-plan-item h3 {
    margin: 0 0 8px;
    font-size: 1.05rem;
    font-weight: 600;
}
.lesson-plan-item p {
    margin: 0;
    color: var(--sub-text);
}
/* ---------- 振替 ---------- */
.reschedule {
    background-color: var(--white);
}
.reschedule-box {
    max-width: 750px;
    margin: 0 auto;
    padding: 45px 50px;
    border: 1px solid var(--border);
    text-align: center;
}
.reschedule-box h3 {
    margin: 0 0 15px;
    color: var(--dark-green);
    font-size: 1.3rem;
    font-weight: 600;
}
.reschedule-box p {
    margin: 0;
    color: var(--sub-text);
}
/* ---------- オンライン授業に必要なもの ---------- */
.lesson-device {
    background-color: var(--light-green);
}
.device-box {
    max-width: 850px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
}
.device-item {
    padding: 35px;
    background-color: var(--white);
    border: 1px solid var(--border);
}
.device-number {
    color: var(--main-green);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
}
.device-item h3 {
    margin: 10px 0 15px;
    color: var(--text);
    font-size: 1.1rem;
    font-weight: 600;
}
.device-item p {
    margin: 0;
    color: var(--sub-text);
}
/* ---------- 保護者サポート ---------- */
.course-support {
    background-color: var(--white);
}
.course-support-box {
    max-width: 850px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 50px;
    padding: 45px;
    border: 1px solid var(--border);
}
.course-support-heading {
    padding-right: 40px;
    border-right: 1px solid var(--border);
}
.course-support-heading span {
    display: block;
    margin-bottom: 10px;
    color: var(--main-green);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.14em;
}
.course-support-heading h3 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    line-height: 1.6;
}
.course-support-content p {
    margin: 0 0 20px;
    color: var(--sub-text);
}
.course-support-content p:last-child {
    margin-bottom: 0;
}
.course-support-content ul {
    margin: 0 0 20px;
    padding-left: 20px;
    color: var(--text);
}
/* ---------- 無料体験 ---------- */
.course-trial {
    background-color: var(--cream);
    text-align: center;
}
.course-trial-message {
    max-width: 700px;
    margin: 0 auto 35px;
    padding: 30px;
    background-color: var(--white);
    border: 1px solid var(--border);
}
.course-trial-message p {
    margin: 0 0 8px;
    color: var(--sub-text);
}
.course-trial-message p:last-child {
    margin-bottom: 0;
}
/* ---------- FAQ ---------- */
.course-faq {
    background-color: var(--white);
}
/* ---------- 料金：基本料金 ---------- */
.price-basic {
    max-width: 750px;
    margin: 0 auto 60px;
}
.price-basic > h3,
.price-tuition > h3 {
    margin: 0 0 20px;
    color: var(--dark-green);
    font-size: 1.25rem;
    font-weight: 600;
}
/* ---------- 料金：学年別授業料 ---------- */
.price-tuition {
    max-width: 750px;
    margin: 0 auto;
}
.price-lesson-time {
    margin: -10px 0 20px;
    color: var(--sub-text);
    font-size: 0.9rem;
}
.tuition-table {
    width: 100%;
    border-top: 1px solid var(--border);
}
.tuition-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    border-bottom: 1px solid var(--border);
}
.tuition-row > div {
    padding: 22px 25px;
}
.tuition-row > div:first-child {
    background-color: var(--cream);
}
.tuition-row > div:last-child {
    background-color: var(--white);
}
.tuition-row strong {
    color: var(--dark-green);
    font-size: 1.1rem;
    font-weight: 600;
}
.tuition-header {
    font-weight: 600;
}
.tuition-header > div {
    background-color: var(--main-green) !important;
    color: var(--white);
}
.price-tax-note {
    max-width: 750px;
    margin: 15px auto 0;
}
.price-tax-note p {
    margin: 0;
    color: var(--sub-text);
    font-size: 0.85rem;
}
/* ---------- 料金：スマートフォン ---------- */
@media (max-width: 768px) {
    .price-basic {
        margin-bottom: 50px;
    }
    .tuition-row > div {
        padding: 18px 15px;
    }
    .tuition-row strong {
        font-size: 1rem;
    }
}