/* ============================================================
   mi-te-theme style.css
   みいてのて｜0〜3歳の知育・発達・絵本情報サイト
   ============================================================ */

/* ============================================================
   0. CSS Variables
   ============================================================ */
:root {
    /* Colors */
    --color-main: #FF8C69;
    --color-main-light: #FFB399;
    --color-main-pale: #FFF0EB;
    --color-sub: #7EC8C8;
    --color-sub-light: #B5E0E0;
    --color-sub-pale: #EDF8F8;
    --color-accent: #FFD700;
    --color-accent-light: #FFF3B0;
    --color-bg: #FAFAFA;
    --color-bg-warm: #FFF9F5;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-text-muted: #999999;
    --color-border: #E8E8E8;
    --color-white: #FFFFFF;

    /* Category Colors */
    --color-cat-development: #FF8C69;
    --color-cat-chiiku: #7EC8C8;
    --color-cat-ehon: #FFA726;
    --color-cat-kyozai: #AB93D5;
    --color-cat-ikuji: #FF80AB;

    /* Typography */
    --font-main: 'Zen Maru Gothic', 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
    --font-body: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
    --font-size-xs: 0.75rem;
    /* 12px */
    --font-size-sm: 0.8125rem;
    /* 13px */
    --font-size-base: 0.9375rem;
    /* 15px */
    --font-size-md: 1rem;
    /* 16px */
    --font-size-lg: 1.125rem;
    /* 18px */
    --font-size-xl: 1.375rem;
    /* 22px */
    --font-size-2xl: 1.625rem;
    /* 26px */
    --font-size-3xl: 2rem;
    /* 32px */

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 0.75rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Shadow */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.10);
    --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.12);

    /* Layout */
    --header-height: 60px;
    --category-bar-height: 44px;
    --content-max: 1100px;
    --content-wide: 1280px;
    --cta-height: 60px;

    /* Transition */
    --transition-fast: 0.15s ease;
    --transition-base: 0.25s ease;
    --transition-slow: 0.4s ease;
}


/* ============================================================
   1. Reset & Base
   ============================================================ */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    scroll-padding-top: calc(var(--header-height) + var(--category-bar-height) + 16px);
}

body {
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    line-height: 1.8;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    padding-bottom: var(--cta-height);
}

img {
    max-width: 100%;
    height: auto;
    vertical-align: middle;
}

a {
    color: var(--color-main);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-main-light);
}

ul,
ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

.screen-reader-text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.sp-only {
    display: none;
}

@media (max-width: 767px) {
    .sp-only {
        display: inline;
    }

    .pc-only {
        display: none;
    }
}


/* ============================================================
   2. Header
   ============================================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--content-wide);
    height: 100%;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* Logo */
.header-logo__text {
    display: flex;
    align-items: baseline;
    gap: var(--space-sm);
    text-decoration: none;
}

.header-logo__main {
    font-family: var(--font-main);
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-main);
    line-height: 1;
    letter-spacing: 0.05em;
}

.header-logo__sub {
    font-family: var(--font-main);
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    line-height: 1;
}

.header-logo .custom-logo {
    height: 40px;
    width: auto;
}

/* PC Nav 非表示（カテゴリバーに統一） */
.header-nav-pc {
    display: none;
}

/* Header Right Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

/* Search Toggle */
.header-search-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    color: var(--color-text-muted);
    font-size: var(--font-size-md);
    transition: background var(--transition-fast), color var(--transition-fast);
}

.header-search-toggle:hover {
    background: var(--color-main-pale);
    color: var(--color-main);
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    gap: 5px;
    z-index: 1100;
}

.hamburger__line {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.hamburger.is-active .hamburger__line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.hamburger.is-active .hamburger__line:nth-child(2) {
    opacity: 0;
}

.hamburger.is-active .hamburger__line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 767px) {
    .header-search-toggle {
        display: flex;
    }

    .hamburger {
        display: flex;
    }
}

/* ============================================================
   3. Search Overlay
   ============================================================ */
.header-search-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1200;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 120px;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

.header-search-overlay.is-active {
    opacity: 1;
    visibility: visible;
}

.header-search-overlay__inner {
    position: relative;
    width: 90%;
    max-width: 600px;
}

.header-search-form {
    display: flex;
    background: var(--color-white);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.header-search-form__input {
    flex: 1;
    padding: var(--space-md) var(--space-lg);
    font-size: var(--font-size-md);
    border: none;
    outline: none;
    font-family: var(--font-body);
}

.header-search-form__submit {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    color: var(--color-white);
    background: var(--color-main);
    border: none;
    transition: background var(--transition-fast);
}

.header-search-form__submit:hover {
    background: var(--color-main-light);
}

.header-search-overlay__close {
    position: absolute;
    top: -50px;
    right: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: var(--font-size-xl);
}


/* ============================================================
   4. Drawer Menu (Mobile)
   ============================================================ */
.drawer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1050;
    pointer-events: none;
}

.drawer.is-active {
    pointer-events: auto;
}

.drawer__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.drawer.is-active .drawer__overlay {
    opacity: 1;
}

.drawer__content {
    position: absolute;
    top: 0;
    right: 0;
    width: 85%;
    max-width: 360px;
    height: 100%;
    background: var(--color-white);
    padding: calc(var(--header-height) + var(--space-lg)) var(--space-lg) var(--space-3xl);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    transform: translateX(100%);
    transition: transform var(--transition-base);
}

.drawer.is-active .drawer__content {
    transform: translateX(0);
}

.drawer__search {
    display: flex;
    background: var(--color-bg);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--space-xl);
}

.drawer__search-input {
    flex: 1;
    padding: var(--space-sm) var(--space-md);
    font-size: var(--font-size-sm);
    border: none;
    outline: none;
    background: transparent;
    font-family: var(--font-body);
}

.drawer__search-submit {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    color: var(--color-main);
}

.drawer__section-title {
    font-family: var(--font-main);
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-text-light);
    margin-bottom: var(--space-sm);
}

.drawer__section-title i {
    margin-right: 4px;
    color: var(--color-main);
}

/* Drawer Age Buttons */
.drawer__age-buttons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xs);
    margin-bottom: var(--space-xl);
}

.drawer__age-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-sm);
    background: var(--color-main-pale);
    border-radius: var(--radius-md);
    font-family: var(--font-main);
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-main);
    transition: background var(--transition-fast), transform var(--transition-fast);
}

.drawer__age-btn:hover {
    background: var(--color-main);
    color: var(--color-white);
    transform: scale(1.05);
}

/* Drawer Nav List */
.drawer__nav {
    margin-bottom: var(--space-xl);
}

.drawer__nav-list li {
    border-bottom: 1px solid var(--color-border);
}

.drawer__nav-list li a {
    display: block;
    padding: var(--space-sm) var(--space-xs);
    font-size: var(--font-size-sm);
    color: var(--color-text);
}

.drawer__nav-list li a i {
    margin-right: 6px;
    color: var(--color-main);
    width: 18px;
    text-align: center;
}

/* Drawer Concern Tags */
.drawer__concern-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.drawer__tag {
    display: inline-block;
    padding: 6px 12px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    color: var(--color-text-light);
    transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.drawer__tag:hover {
    background: var(--color-main-pale);
    color: var(--color-main);
    border-color: var(--color-main);
}


/* ============================================================
   5. Category Bar
   ============================================================ */
.category-bar {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    height: var(--category-bar-height);
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    z-index: 999;
}

.category-bar__inner {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0;
    max-width: var(--content-wide);
    height: 100%;
    margin: 0 auto;
}

.category-bar__item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 0 var(--space-xl);
    height: 100%;
    font-family: var(--font-main);
    font-size: var(--font-size-sm);
    font-weight: 700;
    letter-spacing: 0.03em;
    border-bottom: 2px solid transparent;
    transition: border-color var(--transition-fast), opacity var(--transition-fast);
}

.category-bar__icon {
    font-size: var(--font-size-md);
}

/* 常時カテゴリカラー適用 */
.category-bar__item--development {
    color: var(--color-cat-development);
}

.category-bar__item--chiiku {
    color: var(--color-cat-chiiku);
}

.category-bar__item--ehon {
    color: var(--color-cat-ehon);
}

.category-bar__item--kyozai {
    color: var(--color-cat-kyozai);
}

.category-bar__item--ikuji {
    color: var(--color-cat-ikuji);
}

/* ホバー＆カレント：下線表示 */
.category-bar__item--development:hover,
.category-bar__item--development.is-current {
    border-bottom-color: var(--color-cat-development);
}

.category-bar__item--chiiku:hover,
.category-bar__item--chiiku.is-current {
    border-bottom-color: var(--color-cat-chiiku);
}

.category-bar__item--ehon:hover,
.category-bar__item--ehon.is-current {
    border-bottom-color: var(--color-cat-ehon);
}

.category-bar__item--kyozai:hover,
.category-bar__item--kyozai.is-current {
    border-bottom-color: var(--color-cat-kyozai);
}

.category-bar__item--ikuji:hover,
.category-bar__item--ikuji.is-current {
    border-bottom-color: var(--color-cat-ikuji);
}

/* ホバー時ふんわり強調 */
.category-bar__item:hover {
    opacity: 0.8;
}

@media (max-width: 767px) {
    .category-bar {
        display: none;
    }
}


/* ============================================================
   6. Main Content Area
   ============================================================ */
.site-main {
    margin-top: calc(var(--header-height) + var(--category-bar-height));
}

@media (max-width: 767px) {
    .site-main {
        margin-top: var(--header-height);
    }
}


/* ============================================================
   7. Hero Section
   ============================================================ */
.hero {
    position: relative;
    background: var(--color-bg-warm);
    overflow: hidden;
}

.hero__inner {
    position: relative;
}

.hero__picture {
    display: block;
    width: 100%;
}

.hero__img {
    display: block;
    width: 100%;
    height: auto;
}


.hero__btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius-full);
    font-family: var(--font-main);
    font-size: var(--font-size-md);
    font-weight: 700;
    text-decoration: none;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    white-space: nowrap;
}

.hero__btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.hero__btn--primary {
    background: var(--color-main);
    color: var(--color-white);
}

.hero__btn--primary:hover {
    color: var(--color-white);
}

.hero__btn--secondary {
    background: var(--color-white);
    color: var(--color-main);
    border: 2px solid var(--color-main);
}

.hero__btn--secondary:hover {
    color: var(--color-main);
}

.hero__wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    line-height: 0;
}

.hero__wave svg {
    width: 100%;
    height: 80px;
}

@media (max-width: 767px) {
    .hero__overlay-actions {
        bottom: 60px;
        flex-direction: column;
        align-items: center;
        gap: var(--space-sm);
    }

    .hero__btn {
        padding: 12px 24px;
        font-size: var(--font-size-sm);
    }

    .hero__wave svg {
        height: 40px;
    }
}


/* ============================================================
   8. Section Common
   ============================================================ */
.section {
    position: relative;
    padding: var(--space-3xl) 0;
}

.section__inner {
    max-width: var(--content-max);
    margin: 0 auto;
    padding: 0 var(--space-md);
    position: relative;
    z-index: 1;
}

.section__heading {
    font-family: var(--font-main);
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-text);
    text-align: center;
    margin-bottom: var(--space-xs);
}

.section__heading i {
    color: var(--color-main);
    margin-right: 6px;
}

.section__sub {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--space-xl);
}

/* Background Pattern（背景画像セクション用） */
.section--bg-pattern {
    background-image: url('');
    background-size: 800px auto;
    background-repeat: repeat;
}

.section--bg-pattern::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.88);
    z-index: 0;
}

/* 旧 .section__bg-pattern は不要になるが互換のため残す */
.section__bg-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: 800px auto;
    background-repeat: repeat;
    opacity: 0.08;
    pointer-events: none;
    z-index: 0;
}

/* --- 各セクション背景の割り当て --- */

/* セクション2: 年齢セレクター → 背景画像 */
.section--age-selector {
    background-color: var(--color-bg-warm);
    overflow: hidden;
}

.section--age-selector.section--bg-pattern::before {
    background: rgba(255, 249, 245, 0.85);
}

/* セクション3: お悩み → 単色 */
.section--concerns {
    background: var(--color-white);
}

/* セクション4: 記事 → 背景画像 */
.section--articles {
    background-color: var(--color-bg);
    overflow: hidden;
}

.section--articles.section--bg-pattern::before {
    background: rgba(250, 250, 250, 0.85);
}

/* セクション5: 絵本 → 単色 */
.section--ehon {
    background: var(--color-bg-warm);
}

/* セクション6: 教材 → 背景画像 */
.section--services {
    background-color: var(--color-white);
    overflow: hidden;
}

.section--services.section--bg-pattern::before {
    background: rgba(255, 255, 255, 0.85);
}

/* セクション7: 専門家 → 単色 */
.section--expert {
    background: var(--color-sub-pale);
}

/* セクション8: 月齢リンク → 背景画像 */
.section--monthly-links {
    background-color: var(--color-bg);
    overflow: hidden;
}

.section--monthly-links.section--bg-pattern::before {
    background: rgba(250, 250, 250, 0.85);
}

@media (max-width: 767px) {
    .section {
        padding: var(--space-2xl) 0;
    }

    .section__heading {
        font-size: var(--font-size-xl);
    }

    .section--bg-pattern {
        background-size: 500px auto;
    }
}



/* ============================================================
   9. Age Selector (Section 2)
   ============================================================ */
.age-selector__inner {
    max-width: var(--content-max);
    margin: 0 auto;
    padding: 0 var(--space-md);
    position: relative;
    z-index: 1;
}

.age-selector__heading {
    font-family: var(--font-main);
    font-size: var(--font-size-2xl);
    font-weight: 700;
    text-align: center;
    color: var(--color-text);
    margin-bottom: var(--space-xs);
}

.age-selector__sub {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--space-xl);
}

/* Year Buttons */
.age-selector__years {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.age-year-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-md);
    border-radius: var(--radius-lg);
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
    min-width: 100px;
}

.age-year-btn:hover,
.age-year-btn.is-active {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    background: var(--color-main-pale);
}

.age-year-btn__icon img {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-full);
    object-fit: cover;
}

.age-year-btn__label {
    font-family: var(--font-main);
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-main);
}

/* Month Panels */
.age-months-panel {
    display: none;
    animation: fadeSlideDown 0.3s ease;
}

.age-months-panel.is-active {
    display: block;
}

.age-months-panel__grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--space-xs);
    max-width: 600px;
    margin: 0 auto var(--space-xl);
}

.age-month-btn {
    padding: var(--space-sm) var(--space-xs);
    background: var(--color-white);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-main);
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--color-text);
    transition: all var(--transition-fast);
    text-align: center;
}

.age-month-btn:hover,
.age-month-btn.is-active {
    background: var(--color-main);
    border-color: var(--color-main);
    color: var(--color-white);
    transform: scale(1.05);
}

/* Results Area */
.age-results {
    display: none;
    animation: fadeSlideDown 0.3s ease;
}

.age-results.is-active {
    display: block;
}

/* Results Tabs */
.age-results__tabs {
    display: flex;
    justify-content: center;
    gap: var(--space-xs);
    margin-bottom: var(--space-lg);
}

.age-results__tab {
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-full);
    font-family: var(--font-main);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-light);
    background: var(--color-white);
    border: 1px solid var(--color-border);
    transition: all var(--transition-fast);
}

.age-results__tab:hover,
.age-results__tab.is-active {
    background: var(--color-main);
    border-color: var(--color-main);
    color: var(--color-white);
}

/* Results Panels */
.age-results__panel {
    display: none;
}

.age-results__panel.is-active {
    display: block;
}

.age-results__cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.age-results__cards--ehon {
    grid-template-columns: repeat(3, 1fr);
}

.age-results__empty {
    text-align: center;
    padding: var(--space-2xl);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

/* Loading Spinner */
.age-results__loading {
    text-align: center;
    padding: var(--space-2xl);
    color: var(--color-text-muted);
}

.age-results__spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-main);
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
    margin: 0 auto var(--space-sm);
}

@media (max-width: 767px) {
    .age-selector__years {
        gap: var(--space-sm);
    }

    .age-year-btn {
        min-width: 72px;
        padding: var(--space-sm);
    }

    .age-year-btn__icon img {
        width: 56px;
        height: 56px;
    }

    .age-year-btn__label {
        font-size: var(--font-size-sm);
    }

    .age-months-panel__grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .age-results__cards {
        grid-template-columns: 1fr;
    }

    .age-results__cards--ehon {
        grid-template-columns: repeat(2, 1fr);
    }

    .age-results__tabs {
        flex-wrap: wrap;
    }
}


/* ============================================================
   10. Concern Tags (Section 3)
   ============================================================ */
.concern-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
}

.concern-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
}

.concern-tag:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.concern-tag--development:hover {
    border-color: var(--color-cat-development);
    color: var(--color-cat-development);
}

.concern-tag--chiiku:hover {
    border-color: var(--color-cat-chiiku);
    color: var(--color-cat-chiiku);
}

.concern-tag--ehon:hover {
    border-color: var(--color-cat-ehon);
    color: var(--color-cat-ehon);
}

.concern-tag--kyozai:hover {
    border-color: var(--color-cat-kyozai);
    color: var(--color-cat-kyozai);
}

.concern-tag--ikuji:hover {
    border-color: var(--color-cat-ikuji);
    color: var(--color-cat-ikuji);
}

.concern-tag i {
    font-size: var(--font-size-md);
}

@media (max-width: 767px) {
    .concern-tag {
        padding: 8px 14px;
        font-size: var(--font-size-xs);
    }
}


/* ============================================================
   11. Card Grid (Section 4)
   ============================================================ */
.articles-block {
    margin-bottom: var(--space-3xl);
}

.articles-block:last-child {
    margin-bottom: 0;
}

.card-grid {
    display: grid;
    gap: var(--space-lg);
}

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

.card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.card__link {
    display: block;
    text-decoration: none;
    color: var(--color-text);
}

.card__thumb {
    position: relative;
    overflow: hidden;
    aspect-ratio: 3 / 2;
    background: var(--color-bg);
}

.card__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.card:hover .card__img {
    transform: scale(1.05);
}

.card__no-img {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    font-size: var(--font-size-3xl);
    color: var(--color-border);
}

.card__cat-badge {
    position: absolute;
    top: var(--space-sm);
    left: var(--space-sm);
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 700;
    color: var(--color-white);
}

.card__cat-badge[data-cat*="development"] {
    background: var(--color-cat-development);
}

.card__cat-badge[data-cat*="chiiku"] {
    background: var(--color-cat-chiiku);
}

.card__cat-badge[data-cat*="ehon"] {
    background: var(--color-cat-ehon);
}

.card__cat-badge[data-cat*="kyozai"] {
    background: var(--color-cat-kyozai);
}

.card__cat-badge[data-cat*="ikuji"] {
    background: var(--color-cat-ikuji);
}

.card__body {
    padding: var(--space-md);
}

.card__title {
    font-family: var(--font-main);
    font-size: var(--font-size-base);
    font-weight: 700;
    line-height: 1.5;
    margin-bottom: var(--space-xs);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card__date {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.card__date i {
    margin-right: 3px;
}

.card__age-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-top: var(--space-xs);
}

.card__age-badge {
    padding: 2px 8px;
    background: var(--color-main-pale);
    border-radius: var(--radius-full);
    font-size: 10px;
    font-weight: 500;
    color: var(--color-main);
}

.articles-block__empty {
    text-align: center;
    padding: var(--space-2xl);
    color: var(--color-text-muted);
    grid-column: 1 / -1;
}

/* More Button */
.articles-block__more {
    text-align: center;
    margin-top: var(--space-lg);
}

.btn-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 24px;
    border: 2px solid var(--color-main);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-main);
    transition: all var(--transition-fast);
}

.btn-more:hover {
    background: var(--color-main);
    color: var(--color-white);
}

@media (max-width: 767px) {
    .card-grid--2col {
        grid-template-columns: 1fr;
    }
}


/* ============================================================
   12. Ehon Section (Section 5)
   ============================================================ */
.ehon-tabs {
    display: flex;
    justify-content: center;
    gap: var(--space-xs);
    margin-bottom: var(--space-lg);
    position: relative;
    z-index: 1;
}

.ehon-tabs__btn {
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-full);
    font-family: var(--font-main);
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-text-light);
    background: var(--color-white);
    border: 2px solid var(--color-border);
    transition: all var(--transition-fast);
}

.ehon-tabs__btn:hover,
.ehon-tabs__btn.is-active {
    background: var(--color-cat-ehon);
    border-color: var(--color-cat-ehon);
    color: var(--color-white);
}

.ehon-panel {
    display: none;
    position: relative;
    z-index: 1;
}

.ehon-panel.is-active {
    display: block;
    animation: fadeSlideDown 0.3s ease;
}

.ehon-carousel {
    display: flex;
    gap: var(--space-md);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scroll-snap-type: x mandatory;
    padding-bottom: var(--space-md);
    scrollbar-width: thin;
    scrollbar-color: var(--color-main-light) transparent;
}

.ehon-carousel::-webkit-scrollbar {
    height: 6px;
}

.ehon-carousel::-webkit-scrollbar-thumb {
    background: var(--color-main-light);
    border-radius: 3px;
}

.ehon-card {
    flex: 0 0 160px;
    scroll-snap-align: start;
}

.ehon-card__link {
    display: block;
    text-decoration: none;
    color: var(--color-text);
}

.ehon-card__cover {
    width: 160px;
    height: 220px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: var(--color-bg);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--space-xs);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.ehon-card:hover .ehon-card__cover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.ehon-card__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.ehon-card__no-cover {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    font-size: var(--font-size-3xl);
    color: var(--color-border);
}

.ehon-card__title {
    font-family: var(--font-main);
    font-size: var(--font-size-xs);
    font-weight: 700;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.ehon-card__author {
    font-size: 10px;
    color: var(--color-text-muted);
    margin-top: 2px;
}

.ehon-panel__empty {
    text-align: center;
    padding: var(--space-2xl);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.ehon-panel__empty i {
    margin-right: 4px;
}

.ehon-panel__more {
    text-align: center;
    margin-top: var(--space-lg);
}

@media (max-width: 767px) {
    .ehon-card {
        flex: 0 0 130px;
    }

    .ehon-card__cover {
        width: 130px;
        height: 180px;
    }
}


/* ============================================================
   13. Service Section (Section 6)
   ============================================================ */
.service-carousel {
    display: flex;
    gap: var(--space-md);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scroll-snap-type: x mandatory;
    padding-bottom: var(--space-md);
    margin-bottom: var(--space-lg);
    scrollbar-width: thin;
    scrollbar-color: var(--color-sub-light) transparent;
}

.service-carousel::-webkit-scrollbar {
    height: 6px;
}

.service-carousel::-webkit-scrollbar-thumb {
    background: var(--color-sub-light);
    border-radius: 3px;
}

/* Service Card */
.service-card {
    flex: 0 0 280px;
    scroll-snap-align: start;
    background: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.service-card__link {
    display: block;
    text-decoration: none;
    color: var(--color-text);
}

.service-card__thumb {
    position: relative;
    aspect-ratio: 3 / 2;
    overflow: hidden;
    background: var(--color-bg);
}

.service-card__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.service-card:hover .service-card__img {
    transform: scale(1.05);
}

.service-card__no-img {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    color: var(--color-border);
    font-size: var(--font-size-xl);
}

.service-card__age-badges {
    position: absolute;
    bottom: var(--space-xs);
    left: var(--space-xs);
    display: flex;
    gap: 3px;
}

.service-card__age-badge {
    padding: 2px 6px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: var(--radius-sm);
    font-size: 10px;
    font-weight: 700;
    color: var(--color-main);
}

.service-card__body {
    padding: var(--space-md);
}

.service-card__cat {
    display: inline-block;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: 10px;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--space-xs);
}

.service-card__cat[data-cat*="development"] {
    background: var(--color-cat-development);
}

.service-card__cat[data-cat*="chiiku"] {
    background: var(--color-cat-chiiku);
}

.service-card__cat[data-cat*="ehon"] {
    background: var(--color-cat-ehon);
}

.service-card__cat[data-cat*="kyozai"] {
    background: var(--color-cat-kyozai);
}

.service-card__cat[data-cat*="ikuji"] {
    background: var(--color-cat-ikuji);
}

.service-card__title {
    font-family: var(--font-main);
    font-size: var(--font-size-base);
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: var(--space-xs);
}

.service-card__excerpt {
    font-size: var(--font-size-xs);
    color: var(--color-text-light);
    line-height: 1.6;
}

/* Fallback Cards */
.service-fallback {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.service-fallback__card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: var(--space-xl);
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.service-fallback__card i {
    color: var(--color-sub);
    margin-bottom: var(--space-md);
}

.service-fallback__card h3 {
    font-family: var(--font-main);
    font-size: var(--font-size-md);
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.service-fallback__card p {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-bottom: var(--space-md);
}

/* Service Links */
.service-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.service-links__item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    transition: all var(--transition-fast);
}

.service-links__item:hover {
    border-color: var(--color-sub);
    color: var(--color-sub);
    background: var(--color-sub-pale);
}

@media (max-width: 767px) {
    .service-card {
        flex: 0 0 240px;
    }

    .service-fallback {
        grid-template-columns: 1fr;
    }

    .service-links {
        flex-direction: column;
        align-items: center;
    }
}


/* ============================================================
   14. Expert Section (Section 7)
   ============================================================ */
.expert-box {
    display: flex;
    gap: var(--space-xl);
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--space-xl);
}

.expert-box__icon {
    flex-shrink: 0;
    display: flex;
    align-items: flex-start;
    padding-top: var(--space-xs);
    color: var(--color-accent);
}

.expert-box__name {
    font-family: var(--font-main);
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.expert-box__desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: var(--space-md);
}

.expert-box__points {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.expert-box__points li {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

.expert-box__points li i {
    color: var(--color-sub);
    margin-top: 3px;
    flex-shrink: 0;
}

/* Trust Badges */
.expert-trust {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.expert-trust__item {
    text-align: center;
    padding: var(--space-lg);
    background: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.expert-trust__item i {
    color: var(--color-sub);
    margin-bottom: var(--space-sm);
}

.expert-trust__item p {
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

.expert-trust__item strong {
    font-family: var(--font-main);
    color: var(--color-text);
}

@media (max-width: 767px) {
    .expert-box {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .expert-box__points li {
        text-align: left;
    }

    .expert-trust {
        grid-template-columns: 1fr;
    }
}


/* ============================================================
   15. Monthly Links Grid (Section 8)
   ============================================================ */
.monthly-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.monthly-grid__year-label {
    font-family: var(--font-main);
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-main);
    margin-bottom: var(--space-sm);
    padding-left: var(--space-xs);
    border-left: 3px solid var(--color-main);
}

.monthly-grid__items {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.monthly-grid__item {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px 14px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--color-text);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.monthly-grid__item:hover {
    background: var(--color-main);
    border-color: var(--color-main);
    color: var(--color-white);
}


/* ============================================================
   16. Footer
   ============================================================ */
.footer-top {
    background: var(--color-bg-warm);
    padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-top__inner {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1.5fr 1fr;
    gap: var(--space-xl);
    max-width: var(--content-wide);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.footer-logo__link {
    display: flex;
    flex-direction: column;
    text-decoration: none;
    margin-bottom: var(--space-md);
}

.footer-logo__main {
    font-family: var(--font-main);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-main);
}

.footer-logo__tagline {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.footer-description {
    font-size: var(--font-size-xs);
    color: var(--color-text-light);
    line-height: 1.8;
}

.footer-col__title {
    font-family: var(--font-main);
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
    padding-bottom: var(--space-xs);
    border-bottom: 2px solid var(--color-main);
}

.footer-col__title--related {
    margin-top: var(--space-lg);
}

.footer-col__list li {
    margin-bottom: var(--space-xs);
}

.footer-col__list li a {
    font-size: var(--font-size-xs);
    color: var(--color-text-light);
    transition: color var(--transition-fast);
}

.footer-col__list li a:hover {
    color: var(--color-main);
}

/* Footer Age Grid */
.footer-age-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.footer-age-grid__item {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 3px 8px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 10px;
    color: var(--color-text-light);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.footer-age-grid__item:hover {
    background: var(--color-main);
    border-color: var(--color-main);
    color: var(--color-white);
}

/* Footer Bottom */
.footer-bottom {
    background: var(--color-text);
    padding: var(--space-lg) 0;
}

.footer-bottom__inner {
    max-width: var(--content-wide);
    margin: 0 auto;
    padding: 0 var(--space-md);
    text-align: center;
}

.footer-legal {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-bottom: var(--space-sm);
}

.footer-legal li a {
    font-size: var(--font-size-xs);
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

.footer-legal li a:hover {
    color: var(--color-white);
}

.footer-copyright {
    font-size: var(--font-size-xs);
    color: rgba(255, 255, 255, 0.5);
}

.footer-copyright a {
    color: rgba(255, 255, 255, 0.7);
}

@media (max-width: 767px) {
    .footer-top__inner {
        grid-template-columns: 1fr;
    }
}


/* ============================================================
   17. Floating CTA
   ============================================================ */
#floating-cta {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    display: flex;
    z-index: 9999;
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.15);
}

.floating-cta__btn {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 10px 8px;
    color: #fff;
    text-decoration: none;
    transition: filter var(--transition-fast);
    border: none;
    min-height: var(--cta-height);
}

.floating-cta__btn:hover {
    filter: brightness(1.1);
    color: #fff;
}

.floating-cta__name {
    font-size: 11px;
    opacity: 0.9;
}

.floating-cta__label {
    font-size: 13px;
    font-weight: bold;
    margin-top: 2px;
}


/* ============================================================
   18. Animations
   ============================================================ */
@keyframes fadeSlideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}


/* ============================================================
   19. Print
   ============================================================ */
@media print {

    .site-header,
    .category-bar,
    #floating-cta,
    .drawer,
    .header-search-overlay,
    .hero__overlay-actions {
        display: none !important;
    }

    body {
        padding-bottom: 0;
    }

    .site-main {
        margin-top: 0;
    }
}

/* ============================================================
   PATCH: フロントページ改修
   既存style.cssの末尾に追記してください
   ============================================================ */

/* ============================================================
   Hero: PC 80%幅 & ボタン位置修正
   ============================================================ */
.hero__inner {
    position: relative;
    max-width: 80%;
    margin: 0 auto;
}

.hero__overlay-actions {
    position: absolute;
    bottom: 25%;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--space-md);
    z-index: 10;
}

@media (max-width: 767px) {
    .hero__inner {
        max-width: 100%;
    }

    .hero__overlay-actions {
        bottom: 22%;
        flex-direction: column;
        align-items: center;
        gap: var(--space-sm);
    }
}


/* ============================================================
   Section Heading: 吹き出し風
   ============================================================ */
.section__heading--bubble {
    display: inline-block;
    position: relative;
    background: var(--color-main);
    color: var(--color-white);
    padding: 12px 32px;
    border-radius: var(--radius-xl);
    font-family: var(--font-main);
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin: 0 auto var(--space-xl);
    /* 中央寄せ用 */
    display: table;
}

.section__heading--bubble::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 12px solid transparent;
    border-right: 12px solid transparent;
    border-top: 14px solid var(--color-main);
}

@media (max-width: 767px) {
    .section__heading--bubble {
        font-size: var(--font-size-md);
        padding: 10px 24px;
    }
}


/* ============================================================
   Concern Grid: カード型レイアウト
   ============================================================ */
.concern-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.concern-card {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    text-decoration: none;
    color: var(--color-text);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    border-left: 4px solid transparent;
}

.concern-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
    color: var(--color-text);
}

.concern-card[data-cat="development"]:hover {
    border-left-color: var(--color-cat-development);
}

.concern-card[data-cat="chiiku"]:hover {
    border-left-color: var(--color-cat-chiiku);
}

.concern-card[data-cat="ehon"]:hover {
    border-left-color: var(--color-cat-ehon);
}

.concern-card[data-cat="kyozai"]:hover {
    border-left-color: var(--color-cat-kyozai);
}

.concern-card[data-cat="ikuji"]:hover {
    border-left-color: var(--color-cat-ikuji);
}

.concern-card__icon-wrap {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    color: var(--color-white);
}

.concern-card__icon-wrap--development {
    background: var(--color-cat-development);
}

.concern-card__icon-wrap--chiiku {
    background: var(--color-cat-chiiku);
}

.concern-card__icon-wrap--ehon {
    background: var(--color-cat-ehon);
}

.concern-card__icon-wrap--kyozai {
    background: var(--color-cat-kyozai);
}

.concern-card__icon-wrap--ikuji {
    background: var(--color-cat-ikuji);
}

.concern-card__body {
    flex: 1;
    min-width: 0;
}

.concern-card__title {
    font-family: var(--font-main);
    font-size: var(--font-size-base);
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 2px;
}

.concern-card__desc {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    line-height: 1.4;
}

.concern-card__arrow {
    flex-shrink: 0;
    color: var(--color-border);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast), transform var(--transition-fast);
}

.concern-card:hover .concern-card__arrow {
    color: var(--color-main);
    transform: translateX(3px);
}

@media (max-width: 1023px) {
    .concern-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 767px) {
    .concern-grid {
        grid-template-columns: 1fr;
    }

    .concern-card {
        padding: var(--space-sm) var(--space-md);
    }

    .concern-card__icon-wrap {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-base);
    }
}


/* ============================================================
   Articles Dual: 新着＆おすすめ横並び
   ============================================================ */
.articles-dual {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
}

.section__heading-sm {
    font-family: var(--font-main);
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-xs);
    border-bottom: 3px solid var(--color-main);
}

.section__heading-sm i {
    color: var(--color-main);
    margin-right: 6px;
}

/* 横型カード */
.card-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.card-horizontal {
    border-bottom: 1px solid var(--color-border);
}

.card-horizontal:last-child {
    border-bottom: none;
}

.card-horizontal__link {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) 0;
    text-decoration: none;
    color: var(--color-text);
    transition: background var(--transition-fast);
}

.card-horizontal__link:hover {
    background: var(--color-main-pale);
    margin: 0 calc(-1 * var(--space-sm));
    padding-left: var(--space-sm);
    padding-right: var(--space-sm);
    border-radius: var(--radius-sm);
}

.card-horizontal__thumb {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: var(--color-bg);
}

.card-horizontal__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.card-horizontal__no-img {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    color: var(--color-border);
}

.card-horizontal__body {
    flex: 1;
    min-width: 0;
}

.card-horizontal__cat {
    display: inline-block;
    padding: 1px 8px;
    border-radius: var(--radius-full);
    font-size: 10px;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 4px;
}

.card-horizontal__cat[data-cat*="development"] {
    background: var(--color-cat-development);
}

.card-horizontal__cat[data-cat*="chiiku"] {
    background: var(--color-cat-chiiku);
}

.card-horizontal__cat[data-cat*="ehon"] {
    background: var(--color-cat-ehon);
}

.card-horizontal__cat[data-cat*="kyozai"] {
    background: var(--color-cat-kyozai);
}

.card-horizontal__cat[data-cat*="ikuji"] {
    background: var(--color-cat-ikuji);
}

.card-horizontal__title {
    font-family: var(--font-main);
    font-size: var(--font-size-sm);
    font-weight: 700;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 2px;
}

.card-horizontal__date {
    font-size: 10px;
    color: var(--color-text-muted);
}

.articles-more {
    text-align: center;
    margin-top: var(--space-md);
}

.articles-empty {
    text-align: center;
    padding: var(--space-xl);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

@media (max-width: 767px) {
    .articles-dual {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
}


/* ============================================================
   Fade In Up Animation (スクロール連動)
   ============================================================ */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-up.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* 子要素の遅延表示 */
.concern-grid .fade-in-up:nth-child(1) {
    transition-delay: 0s;
}

.concern-grid .fade-in-up:nth-child(2) {
    transition-delay: 0.05s;
}

.concern-grid .fade-in-up:nth-child(3) {
    transition-delay: 0.1s;
}

.concern-grid .fade-in-up:nth-child(4) {
    transition-delay: 0.15s;
}

.concern-grid .fade-in-up:nth-child(5) {
    transition-delay: 0.2s;
}

.concern-grid .fade-in-up:nth-child(6) {
    transition-delay: 0.25s;
}

.concern-grid .fade-in-up:nth-child(7) {
    transition-delay: 0.3s;
}

.concern-grid .fade-in-up:nth-child(8) {
    transition-delay: 0.35s;
}

.concern-grid .fade-in-up:nth-child(9) {
    transition-delay: 0.4s;
}


/* ============================================================
   ふわふわアニメーション（子供向けギミック）
   ============================================================ */
@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-8px);
    }
}

.age-year-btn__icon img {
    animation: float 3s ease-in-out infinite;
}

.age-year-btn:nth-child(1) .age-year-btn__icon img {
    animation-delay: 0s;
}

.age-year-btn:nth-child(2) .age-year-btn__icon img {
    animation-delay: 0.3s;
}

.age-year-btn:nth-child(3) .age-year-btn__icon img {
    animation-delay: 0.6s;
}

.age-year-btn:nth-child(4) .age-year-btn__icon img {
    animation-delay: 0.9s;
}

/* セクション見出しアイコンのバウンス */
@keyframes bounceIcon {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.15);
    }
}

.section__heading i,
.section__heading-sm i {
    display: inline-block;
    animation: bounceIcon 2s ease-in-out infinite;
}

/* ボタンの光るエフェクト */
.hero__btn--primary {
    position: relative;
    overflow: hidden;
}

.hero__btn--primary::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -60%;
    width: 40%;
    height: 200%;
    background: linear-gradient(90deg,
            transparent,
            rgba(255, 255, 255, 0.3),
            transparent);
    transform: skewX(-20deg);
    animation: btnShine 3s ease-in-out infinite;
}

@keyframes btnShine {
    0% {
        left: -60%;
    }

    30% {
        left: 120%;
    }

    100% {
        left: 120%;
    }
}


/* ============================================================
   Section Concerns: 背景パターン付き
   ============================================================ */
.section--concerns {
    background: var(--color-bg-warm);
    overflow: hidden;
}

.section--concerns .section__inner {
    position: relative;
    z-index: 1;
}