/* ====================================================
   H-Trust Theme — Main Stylesheet
   カラー: ソフトブルー(#5A8FA6) × サーモン(#C4896A) × クリーム
   ==================================================== */

/* ---- CSS カスタムプロパティ ---- */
:root {
    --c-primary:        #5A8FA6;   /* 落ち着いたソフトブルー */
    --c-primary-dark:   #48788D;
    --c-primary-light:  #7BAEC5;
    --c-accent:         #C4896A;   /* 温かみのあるサーモン */
    --c-accent-light:   #F7EAE0;
    --c-text:           #3A4A57;
    --c-text-mid:       #6B7D8E;
    --c-text-light:     #9AAAB7;
    --c-bg:             #FDFCFB;   /* 温かいホワイト */
    --c-bg-alt:         #F5F0EB;   /* 温かいクリーム */
    --c-border:         #E4DDD7;
    --c-white:          #FFFFFF;

    --radius-sm:  6px;
    --radius-md:  14px;
    --radius-lg:  24px;

    --shadow-sm:  0 1px 6px rgba(90,143,166,.08);
    --shadow-md:  0 4px 20px rgba(90,143,166,.12);
    --shadow-lg:  0 8px 36px rgba(90,143,166,.16);

    --transition: .25s ease;

    --font-ja: 'Noto Sans JP', 'Hiragino Sans', 'Meiryo', sans-serif;

    --max-w: 1140px;
    --gutter: clamp(16px, 4vw, 40px);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-ja);
    color: var(--c-text);
    background: var(--c-bg);
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: opacity var(--transition); }
a:hover { opacity: .75; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }

/* ---- コンテナ ---- */
.container {
    max-width: var(--max-w);
    margin-inline: auto;
    padding-inline: var(--gutter);
}

/* ---- セクション共通見出し ---- */
.section-head {
    text-align: center;
    margin-bottom: clamp(40px, 6vw, 64px);
}
.section-head__en {
    font-size: .75rem;
    font-weight: 700;
    letter-spacing: .22em;
    color: var(--c-accent);
    margin-bottom: 8px;
}
.section-head__ja {
    font-size: clamp(1.5rem, 3.5vw, 2.25rem);
    font-weight: 700;
    color: var(--c-primary-dark);
    line-height: 1.4;
    margin-bottom: 16px;
}
.section-head__desc {
    color: var(--c-text-mid);
    font-size: .95rem;
}
/* クリーム背景上の見出し */
.section-head--warm .section-head__ja { color: var(--c-primary-dark); }
.section-head--warm .section-head__desc { color: var(--c-text-mid); }

/* ---- ボタン ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 50px;
    font-size: .95rem;
    font-weight: 700;
    transition: background var(--transition), color var(--transition),
                transform var(--transition), box-shadow var(--transition);
    white-space: nowrap;
}
.btn:hover { opacity: 1; transform: translateY(-2px); box-shadow: var(--shadow-md); }

.btn--primary {
    background: var(--c-accent);
    color: var(--c-white);
}
.btn--primary:hover { background: #b07558; }

.btn--outline {
    background: transparent;
    color: var(--c-primary-dark);
    border: 2px solid var(--c-primary);
}
.btn--outline:hover { background: var(--c-primary); color: var(--c-white); }

.btn--soft {
    background: var(--c-white);
    color: var(--c-primary-dark);
    border: 1px solid var(--c-border);
}
.btn--soft:hover { background: var(--c-bg-alt); }

/* ==================================================
   TOPBAR
   ================================================== */
.topbar {
    background: var(--c-primary-dark);
    padding: 6px 0;
}
.topbar__inner {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 24px;
}
.topbar__hours {
    font-size: .8rem;
    color: rgba(255,255,255,.65);
}
.topbar__tel {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: .9rem;
    font-weight: 700;
    color: var(--c-white);
    transition: color var(--transition);
}
.topbar__tel:hover { color: var(--c-accent-light); opacity: 1; }

/* ==================================================
   SITE HEADER
   ================================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(253,252,251,.96);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    box-shadow: 0 1px 0 var(--c-border);
    transition: box-shadow var(--transition);
}
.site-header.is-scrolled { box-shadow: var(--shadow-sm); }

.site-header-spacer { height: 100px; }

.header__main { padding: 0; }
.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
    gap: 24px;
}

/* ロゴ */
.header__logo-text { display: flex; flex-direction: column; }
.header__logo-name {
    font-size: clamp(.85rem, 1.5vw, 1rem);
    font-weight: 700;
    color: var(--c-primary-dark);
    line-height: 1.3;
    white-space: nowrap;
}

/* ナビ */
.nav__list {
    display: flex;
    align-items: center;
    gap: clamp(8px, 1.5vw, 24px);
}
.nav__link {
    font-size: clamp(.8rem, 1.1vw, .9rem);
    font-weight: 500;
    color: var(--c-text-mid);
    padding: 8px 4px;
    position: relative;
    white-space: nowrap;
}
.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--c-accent);
    border-radius: 2px;
    transform: scaleX(0);
    transition: transform var(--transition);
}
.nav__link:hover::after,
.nav__link.is-current::after { transform: scaleX(1); }
.nav__link:hover,
.nav__link.is-current { opacity: 1; color: var(--c-primary-dark); }

/* ドロップダウン（PC：ホバーで表示）*/
.nav__item { position: relative; }

.sub-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    min-width: 220px;
    background: var(--c-white);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 8px 0;
    list-style: none;
    /* 非表示状態 */
    opacity: 0;
    visibility: hidden;
    transform: translateY(6px);
    transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
    z-index: 200;
}
/* ホバーで表示 */
.nav__item:hover > .sub-menu,
.nav__item:focus-within > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* ナビ項目とドロップダウンの隙間を埋めるブリッジ（カーソルが外れて消えるのを防ぐ）*/
.nav__item.menu-item-has-children::before {
    content: '';
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    height: 12px;
    z-index: 201;
}

.sub-menu__item { list-style: none; }
.sub-menu__link {
    display: block;
    padding: 10px 20px;
    font-size: .875rem;
    color: var(--c-text-mid);
    white-space: nowrap;
    transition: color var(--transition), background var(--transition);
    line-height: 1.5;
}
.sub-menu__link:hover,
.sub-menu__link.is-current {
    color: var(--c-primary-dark);
    background: var(--c-bg-alt);
    opacity: 1;
}
.sub-menu__link.is-current {
    font-weight: 700;
    border-left: 3px solid var(--c-accent);
    padding-left: 17px;
}

/* 親リンクに矢印 */
.nav__item.menu-item-has-children {
    display: flex;
    align-items: center;
    gap: 2px;
}
.nav__item.menu-item-has-children > .nav__link { flex-shrink: 0; }

/* スマホ用ドロップダウントグルボタン */
.sub-menu-toggle {
    display: none; /* PCでは非表示 */
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    color: var(--c-text-mid);
    transition: background var(--transition), transform var(--transition);
    flex-shrink: 0;
}
.sub-menu-toggle:hover { background: var(--c-bg-alt); }
.sub-menu-toggle[aria-expanded="true"] svg { transform: rotate(180deg); }
.sub-menu-toggle svg { transition: transform var(--transition); }

/* ハンバーガー */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 8px;
}
.hamburger__line {
    display: block;
    height: 2px;
    background: var(--c-primary-dark);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}
.hamburger[aria-expanded="true"] .hamburger__line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger[aria-expanded="true"] .hamburger__line:nth-child(2) { opacity: 0; }
.hamburger[aria-expanded="true"] .hamburger__line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ==================================================
   HERO — 明るく・優しいグラデーション
   ================================================== */
.hero {
    background: linear-gradient(150deg, #EDF5F9 0%, #F7F0EB 60%, #FBF6F1 100%);
    min-height: 88vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding: clamp(60px, 10vh, 100px) 0 clamp(80px, 12vh, 120px);
}

/* 背景の装飾 */
.hero__bg-pattern {
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(ellipse at 80% 20%, rgba(196,137,106,.12) 0%, transparent 55%),
        radial-gradient(ellipse at 10% 80%, rgba(90,143,166,.10) 0%, transparent 50%);
}

.hero__inner {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 48px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero__label {
    display: inline-block;
    font-size: .8rem;
    font-weight: 700;
    letter-spacing: .1em;
    color: var(--c-accent);
    background: var(--c-accent-light);
    border: 1px solid rgba(196,137,106,.25);
    border-radius: 50px;
    padding: 5px 16px;
    margin-bottom: 20px;
}

.hero__title {
    font-size: clamp(2.2rem, 6vw, 4rem);
    font-weight: 700;
    color: var(--c-primary-dark);
    line-height: 1.25;
    margin-bottom: 20px;
}
.hero__title-accent { color: var(--c-accent); }

.hero__desc {
    font-size: clamp(.9rem, 1.5vw, 1.05rem);
    color: var(--c-text-mid);
    margin-bottom: 36px;
    line-height: 2;
}

.hero__actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* ヒーロービジュアル */
.hero__visual {
    position: relative;
    width: 280px;
    height: 280px;
    flex-shrink: 0;
}
.hero__circle {
    position: absolute;
    border-radius: 50%;
}
.hero__circle--1 {
    width: 280px; height: 280px;
    background: rgba(90,143,166,.08);
    top: 0; left: 0;
}
.hero__circle--2 {
    width: 210px; height: 210px;
    background: rgba(196,137,106,.10);
    top: 35px; left: 35px;
}
.hero__circle--3 {
    width: 140px; height: 140px;
    background: rgba(90,143,166,.12);
    top: 70px; left: 70px;
}
.hero__icon-wrap {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
}

/* スクロール */
.hero__scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}
.hero__scroll-line {
    display: block;
    width: 1px;
    height: 48px;
    background: linear-gradient(to bottom, transparent, var(--c-primary-light));
    animation: scrollLine 1.8s ease-in-out infinite;
}
.hero__scroll-text {
    font-size: .65rem;
    letter-spacing: .15em;
    color: var(--c-text-light);
}
@keyframes scrollLine {
    0%   { transform: scaleY(0); transform-origin: top; }
    50%  { transform: scaleY(1); transform-origin: top; }
    51%  { transform: scaleY(1); transform-origin: bottom; }
    100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ==================================================
   CONCERNS
   ================================================== */
.concerns {
    background: var(--c-white);
    padding: clamp(40px, 6vw, 64px) 0;
    border-top: 1px solid var(--c-border);
    border-bottom: 1px solid var(--c-border);
}
.concerns__lead {
    text-align: center;
    font-size: clamp(1rem, 2vw, 1.1rem);
    font-weight: 700;
    color: var(--c-primary-dark);
    margin-bottom: 28px;
}
.concerns__list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}
.concerns__item {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--c-bg-alt);
    border: 1px solid var(--c-border);
    border-radius: 50px;
    padding: 10px 20px;
    font-size: .88rem;
    color: var(--c-text-mid);
    box-shadow: var(--shadow-sm);
}
.concerns__icon { font-size: 1.1rem; line-height: 1; }

/* ==================================================
   SERVICES
   ================================================== */
.services {
    padding: clamp(64px, 10vw, 100px) 0;
    background: var(--c-bg);
}
.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 20px;
}
.service-card {
    background: var(--c-white);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    padding: 28px 24px;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    position: relative;
    overflow: hidden;
}
.service-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(to right, var(--c-accent), var(--c-primary-light));
    transform: scaleX(0);
    transition: transform var(--transition);
    border-radius: 3px 3px 0 0;
}
.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(90,143,166,.2);
}
.service-card:hover::before { transform: scaleX(1); }
.service-card__icon { font-size: 2rem; margin-bottom: 12px; line-height: 1; }
.service-card__title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--c-primary-dark);
    margin-bottom: 8px;
}
.service-card__desc {
    font-size: .85rem;
    color: var(--c-text-mid);
    line-height: 1.75;
}
.section-cta { text-align: center; margin-top: 48px; }

/* ==================================================
   STRENGTHS — 温かいクリーム背景
   ================================================== */
.strengths {
    background: linear-gradient(150deg, #F5F0EB 0%, #EDE5DC 100%);
    padding: clamp(64px, 10vw, 100px) 0;
}
.strength-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}
.strength-item {
    display: flex;
    gap: 20px;
    background: rgba(255,255,255,.75);
    border: 1px solid rgba(228,221,215,.8);
    border-radius: var(--radius-md);
    padding: 24px;
    transition: background var(--transition), box-shadow var(--transition);
    backdrop-filter: blur(4px);
}
.strength-item:hover {
    background: var(--c-white);
    box-shadow: var(--shadow-md);
}
.strength-item__num {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--c-accent);
    opacity: .8;
    line-height: 1;
    flex-shrink: 0;
    width: 52px;
}
.strength-item__title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--c-primary-dark);
    margin-bottom: 6px;
}
.strength-item__desc {
    font-size: .85rem;
    color: var(--c-text-mid);
    line-height: 1.75;
}

/* ==================================================
   FLOW
   ================================================== */
.flow {
    padding: clamp(64px, 10vw, 100px) 0;
    background: var(--c-bg);
}
.flow-list {
    display: flex;
    flex-direction: column;
    max-width: 720px;
    margin-inline: auto;
    position: relative;
}
.flow-list::before {
    content: '';
    position: absolute;
    left: 27px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--c-primary-light), var(--c-accent-light));
    border-radius: 2px;
}
.flow-step {
    display: flex;
    gap: 24px;
    align-items: flex-start;
    padding: 24px 0;
    position: relative;
}
.flow-step__num {
    width: 54px;
    height: 54px;
    flex-shrink: 0;
    border-radius: 50%;
    background: var(--c-primary);
    color: var(--c-white);
    font-size: .8rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
    box-shadow: 0 0 0 4px var(--c-bg), var(--shadow-sm);
}
.flow-step:last-child .flow-step__num { background: var(--c-accent); }
.flow-step__title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--c-primary-dark);
    margin-bottom: 6px;
    padding-top: 13px;
}
.flow-step__desc {
    font-size: .9rem;
    color: var(--c-text-mid);
    line-height: 1.75;
}

/* ==================================================
   CTA SECTION — ソフトブルー
   ================================================== */
.cta-section {
    background: linear-gradient(150deg, #D6E8F2 0%, #C8DEEC 100%);
    padding: clamp(64px, 8vw, 80px) 0;
}
.cta-section__inner {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    align-items: center;
    justify-content: space-between;
}
.cta-section__title {
    font-size: clamp(1.4rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--c-primary-dark);
    margin-bottom: 12px;
}
.cta-section__desc {
    color: var(--c-text-mid);
    font-size: .95rem;
    line-height: 1.9;
}
.cta-section__actions {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    flex-shrink: 0;
}
.cta-section__tel {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--c-primary-dark);
}
.cta-section__tel small {
    display: block;
    font-size: .7rem;
    font-weight: 400;
    color: var(--c-text-mid);
    letter-spacing: .05em;
}
.cta-section--sm { padding: clamp(40px, 6vw, 56px) 0; }

/* ==================================================
   PAGE HERO — 淡いグラデーション
   ================================================== */
.page-hero {
    background: linear-gradient(150deg, #EDF5F9 0%, #F7F0EB 100%);
    padding: clamp(40px, 6vw, 64px) 0;
    border-bottom: 1px solid var(--c-border);
}
.page-hero__date {
    display: block;
    font-size: .8rem;
    color: var(--c-text-light);
    margin-bottom: 8px;
}
.page-hero__title {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--c-primary-dark);
    line-height: 1.3;
    margin-bottom: 16px;
}
.page-hero__title--sm { font-size: clamp(1.2rem, 3vw, 1.8rem); }

/* パンくず */
.breadcrumb__list {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}
.breadcrumb__item {
    display: flex;
    align-items: center;
    font-size: .8rem;
    color: var(--c-text-light);
}
.breadcrumb__item + .breadcrumb__item::before {
    content: '›';
    margin-right: 4px;
}
.breadcrumb__item a { color: var(--c-primary); }
.breadcrumb__item a:hover { color: var(--c-primary-dark); opacity: 1; }
.breadcrumb__item span { color: var(--c-text-mid); }

/* ==================================================
   PAGE CONTENT
   ================================================== */
.page-content {
    padding: clamp(48px, 7vw, 80px) 0;
}
.page-content__inner { max-width: 860px; margin-inline: auto; }
.page-content__inner--narrow { max-width: 680px; }

/* 記事本文 */
.entry-content { line-height: 1.9; }
.entry-content h2 {
    font-size: clamp(1.2rem, 2.5vw, 1.6rem);
    font-weight: 700;
    color: var(--c-primary-dark);
    border-left: 4px solid var(--c-accent);
    padding-left: 16px;
    margin: 48px 0 20px;
}
.entry-content h3 {
    font-size: clamp(1rem, 2vw, 1.25rem);
    font-weight: 700;
    color: var(--c-primary-dark);
    margin: 36px 0 14px;
}
.entry-content p { margin-bottom: 1.5em; color: var(--c-text-mid); }
.entry-content ul, .entry-content ol {
    margin: 0 0 1.5em 1.5em;
    color: var(--c-text-mid);
}
.entry-content ul { list-style: disc; }
.entry-content ol { list-style: decimal; }
.entry-content li { margin-bottom: .5em; line-height: 1.8; }
.entry-content a { color: var(--c-primary); text-decoration: underline; }
.entry-content table {
    width: 100%; border-collapse: collapse;
    margin-bottom: 1.5em; font-size: .9rem;
}
.entry-content th, .entry-content td {
    border: 1px solid var(--c-border);
    padding: 10px 14px;
    text-align: left;
}
.entry-content th { background: var(--c-bg-alt); font-weight: 700; color: var(--c-primary-dark); }

/* 投稿ナビ */
.post-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--c-border);
    font-size: .85rem;
}
.post-nav__back {
    font-weight: 700;
    color: var(--c-primary-dark);
    padding: 8px 20px;
    border: 1px solid var(--c-border);
    border-radius: 50px;
}

/* ==================================================
   POST LIST
   ================================================== */
.post-list { display: flex; flex-direction: column; }
.post-card {
    display: flex;
    gap: 20px;
    align-items: baseline;
    padding: 18px 0;
    border-bottom: 1px solid var(--c-border);
}
.post-card__date {
    font-size: .8rem;
    color: var(--c-text-light);
    flex-shrink: 0;
    white-space: nowrap;
}
.post-card__title {
    font-size: .95rem;
    color: var(--c-text);
    font-weight: 500;
}
.post-card__title:hover { color: var(--c-primary); opacity: 1; }

/* ==================================================
   ERROR PAGE
   ================================================== */
.error-page {
    padding: clamp(80px, 12vw, 120px) 0;
    text-align: center;
}
.error-page__code {
    font-size: clamp(5rem, 15vw, 9rem);
    font-weight: 700;
    color: var(--c-border);
    line-height: 1;
    margin-bottom: 16px;
}
.error-page__title {
    font-size: clamp(1.3rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--c-primary-dark);
    margin-bottom: 20px;
}
.error-page__desc {
    color: var(--c-text-mid);
    margin-bottom: 40px;
    line-height: 1.9;
}

/* ==================================================
   FOOTER — ソフトなトーン
   ================================================== */
.footer__top {
    background: linear-gradient(150deg, #4A7A90 0%, #5A8FA6 100%);
    padding: clamp(48px, 7vw, 64px) 0;
}
.footer__top-inner {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 40px;
    align-items: start;
}
.footer__org-name {
    font-size: 1rem;
    font-weight: 700;
    color: var(--c-white);
    line-height: 1.6;
    margin-bottom: 10px;
}
.footer__org-catch {
    font-size: .85rem;
    color: rgba(255,255,255,.65);
}
.footer__contact-label {
    font-size: .75rem;
    color: rgba(255,255,255,.65);
    letter-spacing: .1em;
    margin-bottom: 6px;
}
.footer__tel {
    display: block;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--c-white);
    margin-bottom: 4px;
}
.footer__hours {
    font-size: .75rem;
    color: rgba(255,255,255,.65);
}
.footer__nav-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.footer__nav-list a {
    font-size: .85rem;
    color: rgba(255,255,255,.7);
    transition: color var(--transition);
}
.footer__nav-list a:hover { color: var(--c-accent-light); opacity: 1; }

.footer__bottom {
    background: #3C6880;
    padding: 16px 0;
}
.footer__bottom-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}
.footer__copyright {
    font-size: .75rem;
    color: rgba(255,255,255,.45);
}
.footer__legal { display: flex; gap: 16px; }
.footer__legal a {
    font-size: .75rem;
    color: rgba(255,255,255,.45);
}
.footer__legal a:hover { color: rgba(255,255,255,.75); opacity: 1; }

/* ==================================================
   RESPONSIVE
   ================================================== */
@media (max-width: 1024px) {
    .hero__inner { grid-template-columns: 1fr; }
    .hero__visual { display: none; }
    .hero { min-height: 80vh; }

    .footer__top-inner { grid-template-columns: 1fr 1fr; }
    .footer__nav { grid-column: 1 / -1; }
    .footer__nav-list { flex-direction: row; flex-wrap: wrap; gap: 16px; }
}

@media (max-width: 768px) {
    .site-header-spacer { height: 56px; }

    /* ヘッダー */
    .topbar { display: none; }
    .header__inner { height: 56px; }
    .hamburger { display: flex; }

    /* モバイルナビ */
    .nav {
        position: fixed;
        top: 56px; left: 0; right: 0;
        background: var(--c-white);
        box-shadow: var(--shadow-lg);
        transform: translateY(-110%);
        transition: transform .3s ease;
        z-index: 999;
    }
    .nav.is-open { transform: translateY(0); }
    .nav__list { flex-direction: column; gap: 0; padding: 16px 0; }
    .nav__link {
        display: block;
        padding: 14px var(--gutter);
        font-size: 1rem;
        border-bottom: 1px solid var(--c-bg-alt);
    }
    .nav__link::after { display: none; }

    /* スマホでのドロップダウン */
    .sub-menu-toggle { display: flex; }
    .nav__item.menu-item-has-children { flex-wrap: wrap; padding-right: var(--gutter); }
    .nav__item.menu-item-has-children > .nav__link { flex: 1; }

    /* スマホサブメニュー：絶対配置を解除してアコーディオン風に */
    .sub-menu {
        position: static;
        box-shadow: none;
        border: none;
        border-radius: 0;
        background: var(--c-bg-alt);
        opacity: 1;
        visibility: visible;
        transform: none;
        display: block;
        max-height: 0;
        overflow: hidden;
        transition: max-height .35s ease;
        width: 100%;
        padding: 0;
    }
    .sub-menu.is-open { max-height: 600px; }
    .sub-menu__link {
        padding: 12px var(--gutter) 12px calc(var(--gutter) + 16px);
        font-size: .95rem;
        border-bottom: 1px solid var(--c-border);
    }

    /* ヒーロー */
    .hero { padding: 60px 0 80px; min-height: auto; }
    .hero__actions { flex-direction: column; }
    .hero__actions .btn { width: 100%; max-width: 320px; }

    /* CTA */
    .cta-section__inner { flex-direction: column; text-align: center; }
    .cta-section__actions { align-items: center; width: 100%; }
    .cta-section__actions .btn { width: 100%; max-width: 320px; }

    /* フッター */
    .footer__top-inner { grid-template-columns: 1fr; gap: 32px; }

    /* ステップ */
    .flow-list::before { left: 20px; }
    .flow-step__num { width: 40px; height: 40px; font-size: .7rem; }
    .flow-step__title { padding-top: 6px; }
}

@media (max-width: 480px) {
    .service-grid { grid-template-columns: 1fr; }
    .strength-grid { grid-template-columns: 1fr; }
    .footer__bottom-inner { flex-direction: column; text-align: center; }
}

/* ==================================================
   UTILITIES
   ================================================== */
.sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}

:focus-visible {
    outline: 3px solid var(--c-accent);
    outline-offset: 3px;
    border-radius: 2px;
}