/* ============================================================
   HP SAMURAI - 和モダン・ミニマル デザインシステム
   白（生成り）ベース × 墨色 × 朱アクセント / 余白と細い罫線
============================================================ */

/* ========================================
   Design Tokens
======================================== */
:root {
    --color-paper: #f7f6f2;      /* 生成りの白（ベース） */
    --color-white: #ffffff;
    --color-ink: #16130f;        /* 墨色（テキスト・ダーク背景） */
    --color-ink-soft: #3a362f;
    --color-muted: #6f6a60;      /* 補助テキスト */
    --color-accent: #b8341c;     /* 朱色（アクセント） */
    --color-accent-dark: #94270f;
    --color-gold: #a8873c;       /* 金（バッジ等ごく控えめに） */
    --color-line: #e3dfd6;       /* 罫線 */
    --color-line-dark: rgba(255, 255, 255, 0.18);

    --font-serif: 'Shippori Mincho', 'Noto Serif JP', 'Yu Mincho', serif;
    --font-sans: 'Zen Kaku Gothic New', 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;

    --width-content: 1120px;
    --width-narrow: 760px;

    --space-section: clamp(5rem, 12vw, 9rem);
    --header-height: 76px;

    --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-height) + 1rem);
    overflow-x: clip;
}

body {
    font-family: var(--font-sans);
    font-weight: 400;
    line-height: 2;
    letter-spacing: 0.04em;
    color: var(--color-ink);
    background: var(--color-paper);
    overflow-x: clip;
    -webkit-font-smoothing: antialiased;
}

img,
video {
    max-width: 100%;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

ul,
ol {
    list-style: none;
}

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

#app {
    min-height: 100vh;
}

::selection {
    background: var(--color-accent);
    color: #fff;
}

/* 旧演出の残骸を無効化（背景固定画像・スペーサー等） */
.main-content__bg,
.section__bg-fixed,
.section__bg_w-fixed,
.hero-scroll-spacer,
.hero-content-buffer,
.hero-split-mask {
    display: none !important;
}

/* ========================================
   Home Loading
======================================== */
body.is-loading {
    overflow: hidden;
}

body.is-hero-video-locked {
    overscroll-behavior-y: none;
}

body.is-hero-video-locked .main-content {
    display: none;
}

.hero-loading {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: grid;
    place-items: center;
    gap: 1.25rem;
    padding: 2rem;
    color: #fff;
    background:
        radial-gradient(circle at 50% 42%, rgba(184, 52, 28, 0.28), transparent 28rem),
        linear-gradient(135deg, #130f0b 0%, #211810 48%, #080706 100%);
    isolation: isolate;
    transition: opacity 0.75s var(--ease-out), visibility 0.75s var(--ease-out);
}

.hero-loading::before,
.hero-loading::after {
    content: "";
    position: absolute;
    inset: 1rem;
    pointer-events: none;
    border: 1px solid rgba(168, 135, 60, 0.28);
}

.hero-loading::after {
    inset: auto 0 18%;
    height: 1px;
    border: 0;
    background: linear-gradient(90deg, transparent, rgba(168, 135, 60, 0.72), transparent);
    transform: scaleX(0);
    transform-origin: center;
    animation: loading-line 1.45s var(--ease-out) 0.35s infinite;
}

.hero-loading.is-hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.hero-loading__stage {
    position: relative;
    width: min(76vw, 520px);
    aspect-ratio: 16 / 9;
    display: grid;
    place-items: center;
    perspective: 1100px;
}

.hero-loading__slash {
    position: absolute;
    width: 46%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-gold), #fff, var(--color-gold), transparent);
    transform: rotate(-34deg) scaleX(0.35);
    filter: drop-shadow(0 0 18px rgba(184, 52, 28, 0.55));
    animation: loading-slash 1.8s var(--ease-out) infinite;
}

.hero-loading__cards {
    position: relative;
    width: 100%;
    height: 100%;
}

.hero-loading__card {
    position: absolute;
    top: 50%;
    left: 50%;
    width: clamp(68px, 13vw, 112px);
    border-radius: 6px;
    box-shadow: 0 22px 42px rgba(0, 0, 0, 0.46), 0 0 0 1px rgba(255, 255, 255, 0.2);
    transform-origin: 50% 120%;
    animation: loading-card 1.9s var(--ease-out) infinite;
    will-change: transform, filter;
}

.hero-loading__card--1 {
    --card-x: -210%;
    --card-y: -38%;
    --card-r: -20deg;
    animation-delay: 0s;
}

.hero-loading__card--2 {
    --card-x: -112%;
    --card-y: -58%;
    --card-r: -10deg;
    animation-delay: 0.08s;
}

.hero-loading__card--3 {
    --card-x: -50%;
    --card-y: -66%;
    --card-r: 0deg;
    animation-delay: 0.16s;
}

.hero-loading__card--4 {
    --card-x: 12%;
    --card-y: -58%;
    --card-r: 10deg;
    animation-delay: 0.24s;
}

.hero-loading__card--5 {
    --card-x: 110%;
    --card-y: -38%;
    --card-r: 20deg;
    animation-delay: 0.32s;
}

.hero-loading__brand {
    position: absolute;
    left: 50%;
    top: 50%;
    z-index: 2;
    display: block;
    width: clamp(5rem, 20vw, 15rem);
    height: clamp(5rem, 20vw, 15rem);
    margin: 0;
    object-fit: contain;
    transform: translate(-50%, -50%);
    filter: brightness(0) invert(1);
    opacity: 0.9;
}

.hero-loading__progress {
    position: relative;
    width: min(58vw, 320px);
    display: grid;
    gap: 0.65rem;
    justify-items: center;
    margin-top: -0.75rem;
}

.hero-loading__percent {
    font-family: var(--font-serif);
    font-size: clamp(1rem, 3vw, 1.55rem);
    font-weight: 600;
    line-height: 1;
    color: #f9f3df;
    letter-spacing: 0.08em;
    text-shadow: 0 0 18px rgba(184, 52, 28, 0.45);
}

.hero-loading__bar {
    position: relative;
    width: 100%;
    height: 2px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.14);
}

.hero-loading__bar span {
    position: absolute;
    inset: 0 auto 0 0;
    width: var(--loading-progress, 0%);
    background: linear-gradient(90deg, var(--color-accent), #f9f3df, var(--color-gold));
    box-shadow: 0 0 18px rgba(184, 52, 28, 0.58);
    transition: width 0.22s ease;
}

@keyframes loading-card {
    0% {
        transform: translate3d(-50%, -50%, 0) rotate(0deg) scale(0.72);
        filter: brightness(0.7);
        opacity: 0;
    }
    22%,
    72% {
        transform: translate3d(var(--card-x), var(--card-y), 0) rotate(var(--card-r)) scale(1);
        filter: brightness(1);
        opacity: 1;
    }
    100% {
        transform: translate3d(var(--card-x), calc(var(--card-y) - 10%), 42px) rotate(var(--card-r)) scale(1.04);
        filter: brightness(1.12);
        opacity: 0;
    }
}

@keyframes loading-slash {
    0%,
    18% {
        transform: rotate(-34deg) scaleX(0);
        opacity: 0;
    }
    34%,
    68% {
        transform: rotate(-34deg) scaleX(1);
        opacity: 1;
    }
    100% {
        transform: rotate(-34deg) scaleX(0.12);
        opacity: 0;
    }
}

@keyframes loading-line {
    0% { transform: scaleX(0); opacity: 0; }
    45% { transform: scaleX(1); opacity: 1; }
    100% { transform: scaleX(0); opacity: 0; }
}

@media (max-width: 640px) {
    .hero-loading__stage {
        width: min(92vw, 360px);
        aspect-ratio: 1 / 1;
    }

    .hero-loading__card {
        width: clamp(54px, 19vw, 78px);
    }

    .hero-loading__card--1 { --card-x: -185%; --card-y: -44%; }
    .hero-loading__card--2 { --card-x: -102%; --card-y: -72%; }
    .hero-loading__card--3 { --card-x: -50%; --card-y: -84%; }
    .hero-loading__card--4 { --card-x: 2%; --card-y: -72%; }
    .hero-loading__card--5 { --card-x: 85%; --card-y: -44%; }
}

/* ========================================
   Scroll Reveal（IntersectionObserverで .is-visible 付与）
======================================== */
.fade-in,
.slide-in-left,
.slide-in-right,
.zoom-in {
    opacity: 0;
    transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
    will-change: opacity, transform;
}

.fade-in { transform: translateY(24px); }
.slide-in-left { transform: translateX(-32px); }
.slide-in-right { transform: translateX(32px); }
.zoom-in { transform: scale(0.96); }

.fade-in.is-visible,
.slide-in-left.is-visible,
.slide-in-right.is-visible,
.zoom-in.is-visible {
    opacity: 0.8;
    transform: none;
}

.stagger-1 { transition-delay: 0.12s; }
.stagger-2 { transition-delay: 0.24s; }
.stagger-3 { transition-delay: 0.36s; }

@media (prefers-reduced-motion: reduce) {

html { scroll-behavior: auto; }
    .fade-in,
    .slide-in-left,
    .slide-in-right,
    .zoom-in {
        opacity: 1 !important;
        transform: none !important;
        transition: none !important;
    }
    .top-hero__media video { display: none; }
}

/* ========================================
   Site Header（常設ヘッダーバー）
======================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 90;
    height: var(--header-height);
    display: flex;
    align-items: center;
    background: transparent;
    transition: background 0.4s ease, box-shadow 0.4s ease;
}

.site-header.is-scrolled {
    background: rgba(247, 246, 242, 0.92);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 0 var(--color-line);
}

.site-header__inner {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 clamp(1.25rem, 4vw, 3rem);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.site-header__brand {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    white-space: nowrap;
}

.site-header__brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.1rem;
    height: 2.1rem;
}

.site-header__brand-mark img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.site-header__nav {
    display: flex;
    align-items: center;
    gap: clamp(1rem, 2.2vw, 2rem);
}

.site-header__nav a {
    font-size: 0.85rem;
    letter-spacing: 0.1em;
    position: relative;
    padding: 0.4rem 0;
    color: var(--color-ink-soft);
    transition: color 0.3s ease;
}

.site-header__nav a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 1px;
    background: var(--color-accent);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.35s var(--ease-out);
}

.site-header__nav a:hover {
    color: var(--color-ink);
}

.site-header__nav a:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.site-header__cta {
    font-size: 0.85rem;
    letter-spacing: 0.12em;
    padding: 0.7rem 1.5rem;
    background: var(--color-ink);
    color: #fff;
    transition: background 0.3s ease;
    white-space: nowrap;
}

.site-header__cta:hover {
    background: var(--color-accent);
}

@media (max-width: 1024px) {
    .site-header__nav,
    .site-header__cta {
        display: none;
    }
}

/* ========================================
   Hamburger & Overlay Nav（モバイル）
======================================== */
.hamburger {
    position: fixed;
    top: 14px;
    right: clamp(1rem, 4vw, 2rem);
    z-index: 120;
    width: 48px;
    height: 48px;
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 7px;
}

@media (max-width: 1024px) {
    .hamburger { display: flex; }
}

.hamburger__bar {
    width: 24px;
    height: 1.5px;
    background: var(--color-ink);
    transition: transform 0.35s var(--ease-out), opacity 0.25s ease;
}

.hamburger.is-open .hamburger__bar:nth-child(1) {
    transform: translateY(8.5px) rotate(45deg);
}
.hamburger.is-open .hamburger__bar:nth-child(2) {
    opacity: 0;
}
.hamburger.is-open .hamburger__bar:nth-child(3) {
    transform: translateY(-8.5px) rotate(-45deg);
}

.nav-overlay {
    position: fixed;
    inset: 0;
    z-index: 110;
    background: rgba(247, 246, 242, 0.98);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

.nav-overlay.is-open {
    opacity: 1;
    visibility: visible;
}

.nav-overlay__list {
    width: min(88vw, 28rem);
    text-align: center;
    display: grid;
    gap: 0.6rem;
}

.nav-overlay__list li {
    width: 100%;
}

.nav-overlay__list a {
    font-family: var(--font-serif);
    font-size: 1.35rem;
    letter-spacing: 0.18em;
    padding: 0.5rem 1rem;
    min-height: 3rem;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.3s ease;
}

.nav-overlay__list a:hover {
    color: var(--color-accent);
}

/* ========================================
   Buttons
======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    min-width: 220px;
    padding: 1rem 2.5rem;
    font-size: 0.9rem;
    letter-spacing: 0.14em;
    color: #fff;
    background: var(--color-ink);
    border: 1px solid var(--color-ink);
    transition: background 0.35s ease, color 0.35s ease, border-color 0.35s ease;
}

.btn:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: #fff;
}

.btn::after {
    content: '→';
    font-family: var(--font-sans);
    transition: transform 0.3s ease;
}

.btn:hover::after {
    transform: translateX(4px);
}

.btn--outline {
    background: transparent;
    color: var(--color-ink);
    border-color: currentColor;
}

.btn--outline:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: #fff;
}

.btn--large {
    min-width: 280px;
    padding: 1.2rem 3rem;
    font-size: 0.95rem;
}

/* ダークセクション内のボタン */
.section--dark .btn {
    background: #fff;
    color: var(--color-ink);
    border-color: #fff;
}

.section--dark .btn:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: #fff;
}

/* ========================================
   Hero Gate（トップページ・扉が開くヒーロー）
   スクロール量に連動して左右の扉が開き、背後のメディアとコピーが現れる。
   JSが --gate-door（0〜1・早い→ゆっくり→早い）と --gate-content（遅延進行）を更新する。
======================================== */
.hero-gate {
    position: relative;
    height: 300vh; /* ピン区間。この高さ分のスクロールで扉が全開になる */
}

.hero-gate__sticky {
    position: sticky;
    top: 0;
    height: 100svh;
    overflow: hidden;
    background: var(--color-ink);
}

/* --- 背後（開くと現れる面） --- */
.hero-gate__media {
    position: absolute;
    inset: 0;
    z-index: 1;
    transform: scale(calc(1.12 - var(--gate-door, 0) * 0.12));
    will-change: transform;
}

.hero-gate__media img,
.hero-gate__media video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.hero-gate__veil {
    position: absolute;
    inset: 0;
    z-index: 2;
    background: linear-gradient(
        100deg,
        rgba(247, 246, 242, 0.97) 0%,
        rgba(247, 246, 242, 0.9) 38%,
        rgba(247, 246, 242, 0.5) 68%,
        rgba(247, 246, 242, 0.2) 100%
    );
    opacity: calc(0.75 + var(--gate-door, 0) * 0.25);
}

.hero-gate__inner {
    position: absolute;
    inset: 0;
    z-index: 3;
    max-width: var(--width-content);
    margin: 0 auto;
    padding: calc(var(--header-height) + 2rem) clamp(1.5rem, 5vw, 3rem) 4rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    opacity: var(--gate-content, 0);
    transform: translateY(calc((1 - var(--gate-content, 0)) * 56px));
    will-change: opacity, transform;
}

.hero-gate__label {
    display: inline-flex;
    align-items: center;
    gap: 0.9rem;
    font-size: 0.8rem;
    letter-spacing: 0.28em;
    color: var(--color-accent);
    margin-bottom: 2rem;
}

.hero-gate__label::before {
    content: '';
    width: 2.5rem;
    height: 1px;
    background: var(--color-accent);
}

.hero-gate__title {
    font-family: var(--font-serif);
    font-weight: 600;
    font-size: clamp(2.4rem, 6.5vw, 4.6rem);
    line-height: 1.4;
    letter-spacing: 0.08em;
    margin-bottom: 2rem;
}

.hero-gate__title em {
    font-style: normal;
    color: var(--color-accent);
}

.hero-gate__lead {
    font-size: clamp(0.95rem, 1.6vw, 1.05rem);
    line-height: 2.3;
    color: var(--color-ink-soft);
    max-width: 34em;
    margin-bottom: 3rem;
}

.hero-gate__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

/* --- 前面の扉 --- */
.hero-gate__door {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 50%; /* 分割デコ文字の整合のため厳密に半分（継ぎ目は境界線で覆う） */
    z-index: 4;
    background: var(--color-paper);
    display: flex;
    align-items: center;
    overflow: hidden;
    will-change: transform;
}

.hero-gate__door--left {
    left: 0;
    justify-content: flex-end;
    border-right: 1px solid var(--color-line);
    transform: translateX(calc(var(--gate-door, 0) * -102%));
}

.hero-gate__door--right {
    right: 0;
    justify-content: flex-start;
    border-left: 1px solid var(--color-accent);
    transform: translateX(calc(var(--gate-door, 0) * 102%));
}

/* 扉の上に跨る巨大アウトライン英字（開くと左右に割れる） */
.hero-gate__door-deco {
    position: absolute;
    top: 50%;
    font-family: var(--font-serif);
    font-weight: 600;
    font-size: clamp(5rem, 17vw, 15rem);
    line-height: 1;
    letter-spacing: 0.04em;
    color: transparent;
    -webkit-text-stroke: 1px rgba(22, 19, 15, 0.1);
    white-space: nowrap;
    pointer-events: none;
    user-select: none;
}

/* 両扉に同じ語を置き、扉の overflow:hidden で半分ずつ見せる。
   閉じた状態では継ぎ目上で1つの語に見え、開くと左右に割れる */
.hero-gate__door--left .hero-gate__door-deco {
    right: 0;
    transform: translate(50%, -50%);
}

.hero-gate__door--right .hero-gate__door-deco {
    left: 0;
    transform: translate(-50%, -50%);
}

/* 扉の縦書きコピー */
.hero-gate__door-copy {
    position: relative;
    writing-mode: vertical-rl;
    font-family: var(--font-serif);
    font-weight: 600;
    font-size: clamp(1.5rem, 3.6vw, 2.6rem);
    letter-spacing: 0.32em;
    line-height: 1.9;
    color: var(--color-ink);
    /* 中央ロゴ(clamp幅の半径=10vw)より常に外側になるよう 14vw で追従させ、重なりを防ぐ */
    padding: 0 clamp(3.5rem, 14vw, 11rem);
}

.hero-gate__door--right .hero-gate__door-copy em {
    font-style: normal;
    color: var(--color-accent);
}

/* 扉のサブ情報（左下・右下） */
.hero-gate__door-meta {
    position: absolute;
    bottom: clamp(1.5rem, 4vw, 3rem);
    font-size: 0.72rem;
    letter-spacing: 0.26em;
    color: var(--color-muted);
}

.hero-gate__door--left .hero-gate__door-meta {
    left: clamp(1.5rem, 5vw, 3rem);
}

.hero-gate__door--right .hero-gate__door-meta {
    right: clamp(1.5rem, 5vw, 3rem);
    text-align: right;
}

/* 中央の朱色の紋（開くとともにフェード） */
.hero-gate__crest {
    position: absolute;
    left: 50%;
    top: 50%;
    z-index: 5;
    /* 画面幅に応じて可変（スマホ〜デスクトップ）。中央寄せは translate で行う */
    width: clamp(5rem, 20vw, 15rem);
    height: clamp(5rem, 20vw, 15rem);
    display: flex;
    align-items: center;
    justify-content: center;
    transform: translate(-50%, -50%) scale(calc(1 - var(--gate-door, 0)));
    opacity: calc(1 - var(--gate-door, 0) * 1.6);
    pointer-events: none;
}

.hero-gate__crest img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

/* スクロール誘導（開くとフェードアウト） */
.hero-gate__scroll {
    position: absolute;
    z-index: 6;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.9rem;
    font-size: 0.7rem;
    letter-spacing: 0.3em;
    color: var(--color-muted);
    writing-mode: vertical-rl;
    opacity: calc(1 - var(--gate-door, 0) * 2.5);
    pointer-events: none;
}

.hero-gate__scroll::after {
    content: '';
    width: 1px;
    height: 4.5rem;
    background: linear-gradient(to bottom, var(--color-muted), transparent);
    animation: scroll-line 2.2s ease-in-out infinite;
}

@keyframes scroll-line {
    0% { transform: scaleY(0); transform-origin: top; }
    45% { transform: scaleY(1); transform-origin: top; }
    55% { transform: scaleY(1); transform-origin: bottom; }
    100% { transform: scaleY(0); transform-origin: bottom; }
}

/* 視覚効果軽減・フォールバック: 扉なしの静的表示 */
.hero-gate--static {
    height: auto;
}

.hero-gate--static .hero-gate__sticky {
    position: relative;
    height: 100svh;
}

.hero-gate--static .hero-gate__door,
.hero-gate--static .hero-gate__crest,
.hero-gate--static .hero-gate__scroll {
    display: none;
}

.hero-gate--static .hero-gate__media {
    transform: none;
}

.hero-gate--static .hero-gate__inner {
    opacity: 1;
    transform: none;
}

@media (max-width: 768px) {
    .hero-gate {
        height: 220vh; /* モバイルは短めのスクロールで開く */
    }
    .hero-gate__veil {
        background: linear-gradient(
            to bottom,
            rgba(247, 246, 242, 0.96) 0%,
            rgba(247, 246, 242, 0.85) 60%,
            rgba(247, 246, 242, 0.6) 100%
        );
    }
    .hero-gate__door-copy {
        font-size: 1.3rem;
        /* パディングは基準側の clamp(3.5rem,14vw,11rem) をそのまま使い、
           中央ロゴとの間隔を画面幅に応じて確保する */
    }
    .hero-gate__door-meta { display: none; }
}

/* ========================================
   BG Switch（固定背景の衣装チェンジ）
   セクションを clip-path の「窓」にし、その奥に viewport 固定の
   侍ビジュアルを置く。セクション境界を跨ぐと背景が切り替わり、
   同じ構図の侍が衣装チェンジしているように見える。
   JSがセクション通過進行度に応じて img に軽いズーム／ドリフトを適用。
======================================== */
.bg-switch {
    position: absolute;
    inset: 0;
    z-index: 0;
    clip-path: inset(0);
    pointer-events: none;
}

/* 侍イラストは縦長構図（顔が上部・人物が右側）のため、
   全画面に引き伸ばさず「右寄せ・高さいっぱい・等比」で顔まで見せる */
.bg-switch__img {
    position: fixed;
    top: auto;
    right: 0;
    bottom: 0;
    left: auto;
    height: 70vh;
    height: 70lvh;
    width: auto;
    max-width: none;
    filter: saturate(0.85);
    will-change: transform;
    transform-origin: 72% 18%; /* 顔のあたりを基点にズーム */
    /* イラストの白地の左端を背景に溶け込ませる */
    -webkit-mask-image: linear-gradient(to right, transparent 0%, #000 22%);
    mask-image: linear-gradient(to right, transparent 0%, #000 22%);
}

/* スクロール連動フリップブック（パラパラ漫画）:
   4枚を同じ位置に重ね、JSが opacity をスクロール量に応じて切り替える。
   src差し替えをしないためチラつかず、GPU合成で滑らかに動く。 */
.bg-switch--frames .bg-switch__frame {
    opacity: 0;
    will-change: opacity, transform; /* JSが全コマ共通のズーム/ドリフトを当てる */
}

/* 初期表示（JS未実行・reduced-motion時）は1枚目 */
.bg-switch--frames .bg-switch__frame:first-of-type {
    opacity: 1;
}

/* ========================================
   Scape（セクション背面の多層パララックス背景・汎用）
   -----------------------------------------
   任意の .bg-switch の中（フレームより前＝背面）に置くだけで使える。
   使い方:
     <div class="scape" aria-hidden="true">
       <img class="scape__layer" style="--speed:.02"            src="最背面.png" alt="">
       <img class="scape__layer" style="--speed:.04; --offset:2%" src="中景.png"  alt="">
       <img class="scape__layer" style="--speed:.06"            src="前景.png"   alt="">
       <img class="scape__layer" style="--speed:.08; --offset:2%" src="最前面.png" alt="">
     </div>
   ・下の <img> ほど手前（重ね順＝奥→手前）。枚数は自由。
   ・--speed … 視差の強さ（大きいほど速く動く／手前らしく見える）
   ・--offset … 縦位置の微調整（素材の描画位置に合わせて % を足す）
   ・別セクションでも「この構造をコピーして src と --speed/--offset を変えるだけ」で流用可。
   JS が所属セクションのフリップブック進行度に応じて --scroll(数値) を更新する。
======================================== */
.scape {
    position: fixed;
    inset: 0;
    overflow: hidden;
    opacity: 0.72;
    pointer-events: none;
}

/* 黒背景では深い墨色に調整し、人物の鮮明さは維持する */
.section--dark .scape {
    opacity: 0.62;
}

.scape__layer {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: 62% bottom;
    filter: grayscale(1) contrast(0.84) brightness(1.08);
    will-change: transform;
    /* --scroll × --speed 分だけ上へ移動、--offset で縦位置調整。
       scale(1.06) は視差移動時の隙間を隠す僅かな余白。
       JS未実行 / reduced-motion 時は --scroll=0 のまま静止する。 */
    transform: translateY(calc(var(--offset, 0px) + var(--scroll, 0) * var(--speed, 0) * -1px)) scale(1.06);
}

.section--dark .scape__layer {
    filter: grayscale(1) contrast(0.88) brightness(0.58);
}

/* ========================================
   Scape トラベルズーム（.scape--travel）
   -----------------------------------------
   多層の書き割りを同サイズで重ね、スクロール進行に応じて
   消失点（transform-origin）へ向かって各層を拡大する。
   近い層ほど --zoom-to を大きくすると、絵に描き込まれた遠近と
   相まって「街の中をカメラが前進する」ように見える。
   拡大の計算とtransformの適用は common.js（トラベルセクションの
   ピン留め区間進行度）が行う。
======================================== */
.scape.scape--travel {
    opacity: 1; /* 墨色の紗ではなくカラーの主背景として見せる */
}

.scape--travel .scape__layer {
    object-position: 50% bottom;
    transform-origin: 50% 56%; /* 街道の奥（画面中心より少し下）へ向かって拡大 */
    transform: none;           /* 旧・縦パララックスのtransformは使わない */
    filter: saturate(0.85);
}

/* ========================================
   Travel Film（セクション退場時の街中通り抜け・汎用）
   -----------------------------------------
   動画から切り出したコマを viewport 固定で重ね、セクションを離れて
   次セクションへ向かうスクロール量に応じて JS が opacity を
   クロスフェードでスクラブする（パラパラ漫画の退場版）。
   使い方: .bg-switch の中（フレームより前＝背面）に置く。
     <div class="travel-film" aria-hidden="true">
       <img class="travel-film__frame" src="コマ01" alt="">
       <img class="travel-film__frame" src="コマ02" alt=""> …
     </div>
   ・コマは並べた順に再生される（枚数は自由）
   ・JS未実行 / reduced-motion 時は1枚目だけが静止表示される
======================================== */
.travel-film {
    position: fixed;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.travel-film__frame {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: 50% 62%; /* 街道の消失点あたりを画面中央に */
    filter: saturate(0.85);
    opacity: 0;
    will-change: opacity;
}

.travel-film__frame:first-of-type {
    opacity: 1;
}

@media (prefers-reduced-motion: reduce) {
    .travel-film {
        position: absolute;
    }
}

/* 生成りの紗（左側のテキストを読みやすく、右側の顔は見せる） */
.bg-switch::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    height: 100lvh;
    background: linear-gradient(
        100deg,
        rgba(247, 246, 242, 0.92) 0%,
        rgba(247, 246, 242, 0.72) 45%,
        rgba(247, 246, 242, 0.18) 75%,
        rgba(247, 246, 242, 0) 100%
    );
}

/* PC表示: セクション左半分に白ぼかし（backdrop-blur）を掛けて文字を読みやすく。
   mask で左側だけに blur を限定し、右側の人物はぼかさない（見本に合わせる）。 */
@media (min-width: 769px) {
    .bg-switch::after {
        backdrop-filter: blur(6px);
        -webkit-backdrop-filter: blur(6px);
        -webkit-mask-image: linear-gradient(100deg, #000 0%, #000 38%, transparent 62%);
        mask-image: linear-gradient(100deg, #000 0%, #000 38%, transparent 62%);
    }
}

/* ダークセクションは墨の紗（顔の部分は薄めに） */
.section--dark .bg-switch::after {
    background: linear-gradient(
        100deg,
        rgba(22, 19, 15, 0.95) 0%,
        rgba(22, 19, 15, 0.82) 45%,
        rgba(22, 19, 15, 0.45) 100%
    );
}

/* 衣装番号（右端の縦書きラベル。セクションごとに切り替わる）
   左の .section__side-label と同じ高さ・文字仕様で右端にミラー配置。
   カラー背景の上でも読めるよう、短冊風の下地を敷く */
.bg-switch__label {
    position: absolute;
    top: var(--space-section);
    right: clamp(0.25rem, 1.5vw, 1rem);
    z-index: 2;
    writing-mode: vertical-rl;
    font-family: var(--font-serif);
    font-size: 0.72rem;
    letter-spacing: 0.34em;
    color: var(--color-muted);
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.25rem 0.1rem 0.2rem;
    background: rgba(247, 246, 242, 0.85);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
}

.bg-switch__label::before {
    content: '';
    width: 1px;
    height: 2.8rem;
    background: var(--color-accent);
}

.section--dark .bg-switch__label {
    color: rgba(255, 255, 255, 0.78);
    background: rgba(22, 19, 15, 0.62);
}

@media (max-width: 768px) {
    .bg-switch__img {
        height: 80vh;
        height: 80lvh;
    }
    .bg-switch__label { display: none; }
    /* モバイルはテキストが画像に重なるため紗を少し強めに（顔上部は薄く） */
    .bg-switch::after {
        background: linear-gradient(
            to bottom,
            rgba(247, 246, 242, 0.72) 0%,
            rgba(247, 246, 242, 0.88) 40%,
            rgba(247, 246, 242, 0.92) 100%
        );
    }
    .section--dark .bg-switch::after {
        background: linear-gradient(
            to bottom,
            rgba(22, 19, 15, 0.72) 0%,
            rgba(22, 19, 15, 0.9) 45%,
            rgba(22, 19, 15, 0.94) 100%
        );
    }
}

/* 視覚効果軽減: 固定をやめて通常の背景として表示 */
@media (prefers-reduced-motion: reduce) {
.bg-switch__img {
        position: absolute;
        right: 0;
        bottom: 0;
        height: 70%;
        width: auto;
    }
    .bg-switch::after {
        position: absolute;
        width: 100%;
        height: 100%;
    }
    .bg-switch__label {
        position: absolute;
    }
}

/* ========================================
   Sub Hero（下層ページ）
======================================== */
.sub-hero {
    position: relative;
    padding: calc(var(--header-height) + clamp(4rem, 9vw, 7rem)) clamp(1.5rem, 5vw, 3rem) clamp(3rem, 6vw, 5rem);
    border-bottom: 1px solid var(--color-line);
    overflow: hidden;
    display: none;
}

.sub-hero__bg {
    display: none;
}

.sub-hero__content {
    position: relative;
    max-width: var(--width-content);
    margin: 0 auto;
}

.sub-hero__title {
    font-family: var(--font-serif);
    font-weight: 600;
    font-size: clamp(1.9rem, 4.5vw, 3rem);
    letter-spacing: 0.12em;
    line-height: 1.5;
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.sub-hero__title::before {
    content: '';
    width: clamp(2rem, 5vw, 3.5rem);
    height: 1px;
    background: var(--color-accent);
    flex-shrink: 0;
}

/* ========================================
   Sections（共通）
======================================== */
.main-content {
    position: relative;
}

.section {
    position: relative;
    padding: var(--space-section) clamp(1.5rem, 5vw, 3rem);
    background: var(--color-paper);
    overflow: hidden;
}

.section:nth-of-type(even) {
    background: var(--color-white);
}

/* ========================================
   Scroll Flipbook（スクロール連動パラパラ漫画・汎用）
   -----------------------------------------
   任意のセクションで流用できる。使い方:
     1) <section class="section section--flipbook"> にする
     2) 中に <div class="bg-switch bg-switch--frames"> を置き、
        複数の <img class="bg-switch__img bg-switch__frame" src="コマ画像"> を
        並べる（枚数は自由。並べた順にフェードで切り替わる）
     3) 見出し・本文などは <div class="section__pin"> で包む
        （スクロール中は画面内にピン留めされる）
   任意で bg-switch に data-anim-start="0.8"（0〜1）を付けると
   セクションごとに開始タイミングを調整できる（小さいほど早く始まる）。
   セクションが下から入ってくる過程でコマが順に切り替わり、
   画面いっぱいに表示しきった時点で最終コマに到達する（アニメ制御はJS側）。 */
.section--flipbook {
    min-height: 100vh;
}

.section--flipbook .section__pin {
    position: sticky;
    top: clamp(5rem, 13vh, 8rem);
    z-index: 2;
}

/* トラベルセクション: 余分な1画面分のスクロール中は
   セクションが画面を覆ったまま（clip窓が全開のまま）街中通り抜けを
   全画面で再生しきり、その後に次セクションへの退場が始まる */
.section--travel {
    min-height: 200vh;
    /* overflow: hidden だと祖先がスクロールコンテナ扱いになり
       .section__pin の position: sticky が効かなくなるため、
       描画だけを切り落とす clip に差し替える（見た目は同じ） */
    overflow: clip;
}

/* 内容が1画面に収まらないトラベルセクション（JSが --tall を付与）:
   ピン留めすると下部が読めなくなるため、通常フローで読み進めさせる。
   フルページナビも1画面ずつのスクロールに切り替わる（common.js）。
   高さも200vhを強制せず内容なりにして、本文の後に背景だけの
   大きな余白が残らないようにする */
.section--travel.section--travel--tall {
    min-height: 100vh;
}

.section--travel.section--travel--tall .section__pin {
    position: relative;
    top: auto;
}

.section__inner {
    position: relative;
    max-width: var(--width-content);
    margin: 0 auto;
    z-index: 2;
}

.section__inner--left {
    max-width: var(--width-content);
}

/* 巨大な英字デコレーション（アウトラインのみ・ごく薄く） */
.deco-text {
    position: absolute;
    top: clamp(1rem, 4vw, 3rem);
    right: -0.05em;
    z-index: 1;
    font-family: var(--font-serif);
    font-size: clamp(4.5rem, 14vw, 11rem);
    font-weight: 600;
    line-height: 1;
    letter-spacing: 0.02em;
    color: transparent;
    -webkit-text-stroke: 1px rgba(22, 19, 15, 0.07);
    pointer-events: none;
    user-select: none;
    white-space: nowrap;
}

.section--dark .deco-text,
.deco-text--light {
    -webkit-text-stroke: 1px rgba(255, 255, 255, 0.09);
}

/* 縦書きのサイドラベル */
.section__side-label {
    position: absolute;
    top: var(--space-section);
    left: clamp(0.25rem, 1.5vw, 1rem);
    z-index: 2;
    writing-mode: vertical-rl;
    font-size: 0.72rem;
    letter-spacing: 0.34em;
    color: var(--color-muted);
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
}

.section__side-label::before {
    content: '';
    width: 1px;
    height: 2.8rem;
    background: var(--color-line);
}

@media (max-width: 768px) {
    .section__side-label { display: none; }
}

/* 見出し */
.section__heading-box {
    position: relative;
    z-index: 2;
    max-width: var(--width-content);
    margin: 0 auto 3.5rem;
    font-weight: 600;
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 0.4em;
}

.heading-main {
    display: inline-flex;
    align-items: baseline;
    gap: 0.18em;
}

.heading-en {
    font-family: var(--font-serif);
    font-size: clamp(1.7rem, 3.6vw, 2.6rem);
    letter-spacing: 0.06em;
    color: var(--color-accent);
}

.heading-jp {
    font-family: var(--font-serif);
    font-size: clamp(1.7rem, 3.6vw, 2.6rem);
    letter-spacing: 0.1em;
    position: relative;
}

.heading-ruby {
    position: absolute;
    top: -1.1em;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.62rem;
    letter-spacing: 0.2em;
    color: var(--color-muted);
    font-family: var(--font-sans);
    white-space: nowrap;
}

.heading-suffix {
    font-family: var(--font-serif);
    font-size: clamp(1.1rem, 2.2vw, 1.5rem);
    letter-spacing: 0.12em;
    color: var(--color-ink-soft);
}

/* 見出し下の朱ライン */
.section__heading-box::after {
    content: '';
    flex-basis: 100%;
    width: 3.5rem;
    height: 2px;
    background: var(--color-accent);
    margin-top: 1.2rem;
}

.section__title {
    font-family: var(--font-serif);
    font-size: clamp(1.4rem, 2.6vw, 1.8rem);
    letter-spacing: 0.14em;
    font-weight: 600;
}

.section__lead {
    font-family: var(--font-serif);
    font-size: clamp(1.3rem, 2.6vw, 1.8rem);
    font-weight: 600;
    line-height: 1.9;
    letter-spacing: 0.1em;
    margin-bottom: 1.75rem;
}

.section__text {
    font-size: 0.95rem;
    line-height: 2.3;
    color: var(--color-ink-soft);
    max-width: 42em;
}

.section__action {
    margin-top: 3rem;
}

/* ダークセクション（CTA等） */
.section--dark {
    background: var(--color-ink) !important;
    color: #fff;
}

.section--dark .section__text {
    color: rgba(255, 255, 255, 0.75);
}

.section--dark .heading-jp,
.section--dark .heading-suffix,
.section--dark .section__title {
    color: #fff;
}

.section--dark .heading-en {
    color: var(--color-accent);
}

.section--dark .heading-ruby {
    color: rgba(255, 255, 255, 0.5);
}

.section--dark .section__side-label {
    color: rgba(255, 255, 255, 0.45);
}

.section--dark .section__side-label::before {
    background: var(--color-line-dark);
}

/* ========================================
   CTA セクション
======================================== */
.section--cta .section__inner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(3rem, 8vw, 7rem);
    padding: 2rem 0;
}

.cta__vertical {
    font-family: var(--font-serif);
    font-size: clamp(1.6rem, 3.4vw, 2.4rem);
    font-weight: 600;
    letter-spacing: 0.24em;
    line-height: 2;
    writing-mode: vertical-rl;
    border-right: 1px solid var(--color-line-dark);
    padding-right: clamp(1.5rem, 3vw, 2.5rem);
}

.cta__body {
    max-width: 30em;
}

@media (max-width: 768px) {
    .section--cta .section__inner {
        flex-direction: column;
        gap: 2.5rem;
    }
    .cta__vertical {
        writing-mode: horizontal-tb;
        border-right: none;
        border-bottom: 1px solid var(--color-line-dark);
        padding: 0 0 1.5rem;
        text-align: center;
    }
    .cta__body { text-align: center; }
}

.features-overview__reasons {
    max-width: 52rem;
    margin-top: clamp(3.5rem, 8vw, 6rem);
}

.features-overview__reasons-title {
    margin-bottom: 1.5rem;
    font-family: var(--font-serif);
    font-size: clamp(1.35rem, 2.8vw, 1.8rem);
    font-weight: 600;
    letter-spacing: 0.16em;
}
/* ========================================
   Reason List（選ばれる理由・特長）
======================================== */
.reason-list {
    display: grid;
    gap: 0;
    border-top: 1px solid var(--color-line);
}

.section--dark .reason-list {
    border-color: var(--color-line-dark);
}

.reason-item {
    display: flex;
    align-items: flex-start;
    gap: clamp(1.5rem, 4vw, 3.5rem);
    padding: clamp(2rem, 4vw, 3rem) 0.5rem;
    border-bottom: 1px solid var(--color-line);
}

.section--dark .reason-item {
    border-color: var(--color-line-dark);
}

.reason-item--reverse {
    flex-direction: row;
}

.reason-item__num {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 4.5vw, 3.2rem);
    font-weight: 400;
    line-height: 1;
    color: var(--color-accent);
    flex-shrink: 0;
    min-width: 2.2em;
}

.reason-item__num::after {
    content: '';
    display: block;
    width: 100%;
    height: 1px;
    background: var(--color-line);
    margin-top: 0.6rem;
}

.reason-item__title {
    font-family: var(--font-serif);
    font-size: clamp(1.15rem, 2.2vw, 1.45rem);
    font-weight: 600;
    letter-spacing: 0.1em;
    margin-bottom: 0.75rem;
}

.reason-item__desc {
    font-size: 0.92rem;
    line-height: 2.2;
    color: var(--color-ink-soft);
    max-width: 44em;
}

.section--dark .reason-item__desc {
    color: rgba(255, 255, 255, 0.72);
}

/* ========================================
   Plan Cards（料金プラン）
======================================== */
.plan-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    align-items: stretch;
}

/* 生成り紙のカード。二重の飾り枠（外枠＋内枠::before）で和紙の札に見せる */
.plan-card {
    position: relative;
    display: flex;
    flex-direction: column;
    background:
        linear-gradient(160deg, rgba(255, 255, 255, 0.6), rgba(255, 255, 255, 0) 45%),
        #f6f1e6;
    border: 1px solid #ccbfa4;
    padding: 1.1rem 1.1rem 1.4rem;
    transition: border-color 0.35s ease, transform 0.35s var(--ease-out), box-shadow 0.35s ease;
}

.plan-card::before {
    content: '';
    position: absolute;
    inset: 7px;
    border: 1px solid rgba(146, 124, 86, 0.45);
    pointer-events: none;
    z-index: 2;
}

.plan-card:hover {
    border-color: var(--color-ink);
    transform: translateY(-4px);
    box-shadow: 0 16px 40px rgba(22, 19, 15, 0.12);
}

.plan-card__badge,
.plan-card__popular {
    position: absolute;
    top: 0;
    right: 1.5rem;
    transform: translateY(-50%);
    background: var(--color-accent);
    color: #fff;
    font-size: 0.7rem;
    letter-spacing: 0.14em;
    padding: 0.3rem 0.9rem;
    font-family: var(--font-sans);
    font-weight: 500;
    z-index: 3;
}

/* おすすめリボン（画像素材） */
.plan-card__ribbon {
    position: absolute;
    top: -5px;
    right: -5px;
    width: clamp(84px, 32%, 110px);
    height: auto;
    z-index: 3;
    filter: drop-shadow(0 3px 6px rgba(0, 0, 0, 0.28));
}

.plan-card__header {
    position: relative;
}

.plan-card__image {
    display: block;
    width: 72%;
    height: auto;
    aspect-ratio: 1086 / 1448;
    margin: 0.5rem auto 0;
    object-fit: contain;
}

/* プラン名: 中央に家紋＋名前、左右に飾り罫 */
.plan-card__name {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    margin: 0;
    padding: 1rem 0.5rem 0.4rem;
    color: var(--color-ink);
    font-family: var(--font-serif);
    font-size: clamp(1.4rem, 2vw, 1.7rem);
    font-weight: 600;
    line-height: 1;
    letter-spacing: 0.2em;
}

.plan-card__name::before,
.plan-card__name::after {
    content: '';
    flex: 1 1 auto;
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(146, 124, 86, 0.55));
}

.plan-card__name::after {
    background: linear-gradient(to left, transparent, rgba(146, 124, 86, 0.55));
}

/* 家紋（ロゴをマスクで単色化） */
.plan-card__crest {
    flex: 0 0 auto;
    width: 1.35em;
    height: 1.35em;
    background-color: var(--color-ink);
    -webkit-mask: url('../images/logo.webp') no-repeat center / contain;
    mask: url('../images/logo.webp') no-repeat center / contain;
}

.plan-card__body {
    display: flex;
    flex: 1;
    flex-direction: column;
    padding: 0.25rem 0.9rem 0.4rem;
}

.plan-card__price {
    font-family: var(--font-serif);
    font-size: 2.1rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: var(--color-ink);
    line-height: 1.2;
    text-align: center;
}

.plan-card__price span {
    font-size: 0.85rem;
    color: var(--color-muted);
    letter-spacing: 0.08em;
    margin-left: 0.2em;
}

/* 税込表記（価格の直下・中央） */
.plan-card__tax {
    font-family: var(--font-serif);
    font-size: 0.8rem;
    color: var(--color-muted);
    letter-spacing: 0.12em;
    text-align: center;
    margin: 0.15rem 0 0;
}

.plan-card__initial {
    font-size: 0.75rem;
    color: var(--color-muted);
    letter-spacing: 0.06em;
    text-align: center;
    margin: 0.3rem 0 1.1rem;
}

.plan-card__desc {
    font-size: 0.86rem;
    line-height: 1.9;
    color: var(--color-ink-soft);
    text-align: center;
    margin-bottom: 1.25rem;
}

.plan-card__features {
    display: grid;
    gap: 0.55rem;
    margin-bottom: 1.75rem;
    flex-grow: 1;
}

.plan-card__features li {
    font-size: 0.85rem;
    color: var(--color-ink-soft);
    padding-left: 1.6em;
    position: relative;
}

/* 家紋ビュレット */
.plan-card__features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.25em;
    width: 1.05em;
    height: 1.05em;
    background-color: var(--color-accent);
    -webkit-mask: url('../images/logo.webp') no-repeat center / contain;
    mask: url('../images/logo.webp') no-repeat center / contain;
}

.plan-card .btn {
    min-width: 0;
    width: 100%;
    padding: 0.9rem 1rem;
    font-size: 0.82rem;
}

/* 将軍: 朱枠の一枚（下地は他カードと同じ生成り紙のまま、
   枠・家紋・プラン名・価格などを朱で差別化する） */
.plan-card--featured {
    border-color: #a83326;
}

.plan-card--featured::before {
    border-color: rgba(168, 51, 38, 0.55);
}

.plan-card--featured:hover {
    border-color: #8c2318;
}

.plan-card--featured .plan-card__name,
.plan-card--featured .plan-card__price {
    color: #8c2318;
}

.plan-card--featured .plan-card__name::before {
    background: linear-gradient(to right, transparent, rgba(168, 51, 38, 0.5));
}

.plan-card--featured .plan-card__name::after {
    background: linear-gradient(to left, transparent, rgba(168, 51, 38, 0.5));
}

.plan-card--featured .plan-card__crest {
    background-color: #a83326;
}

.plan-card--featured .plan-card__tax {
    color: #a4574c;
}

.plan-card--featured .btn {
    background: #a83326;
    border-color: #a83326;
    color: #f8eeda;
}

.plan-card--featured .btn:hover {
    background: #8c2318;
    border-color: #8c2318;
}

@media (max-width: 768px) {
    .plan-card__name {
        font-size: 1.45rem;
    }

    .plan-card__body {
        padding: 0.25rem 0.5rem 0.4rem;
    }
}

/* ========================================
   黒金の「こだわり」カード（プラン一覧の末尾）
   上・中・下の金枠背景素材を縦に継ぎ、中身は画像素材＋CTAリンク
======================================== */
.brand-card {
    position: relative;
    display: flex;
    flex-direction: column;
    background: url('../images/card/bk_card_body_bg.png') repeat-y center top #17130f;
    background-size: 100% auto;
}

.brand-card__frame {
    display: block;
    width: 100%;
    height: auto;
}

.brand-card__body {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.4rem;
    padding: 0.25rem 1.6rem 0.75rem;
}

.brand-card__contents {
    display: block;
    width: 100%;
    max-width: 330px;
    height: auto;
}

.brand-card__btn {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--font-serif);
    font-size: 0.85rem;
    letter-spacing: 0.18em;
    color: #d8b56a;
    border: 1px solid rgba(216, 181, 106, 0.65);
    padding: 0.8rem 1.7rem;
    transition: background 0.3s ease, color 0.3s ease;
}

.brand-card__btn:hover {
    background: #d8b56a;
    color: #17130f;
}
/* 「全プランを確認」リンクカード */
.plan-card--link {
    align-items: center;
    justify-content: center;
    gap: 1rem;
    background: var(--color-ink);
    border-color: var(--color-ink);
    color: #fff;
    font-family: var(--font-serif);
    letter-spacing: 0.16em;
    min-height: 220px;
}

.plan-card--link:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
}

.plan-card__link-text {
    font-size: 1.1rem;
}

.plan-card__link-arrow {
    font-size: 1.3rem;
    transition: transform 0.3s ease;
}

.plan-card--link:hover .plan-card__link-arrow {
    transform: translateX(6px);
}

/* 注意事項 */
.plans-notes {
    max-width: var(--width-narrow);
    margin: 0 auto;
}

.plans-notes__title {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    letter-spacing: 0.2em;
    margin-bottom: 1.5rem;
    text-align: center;
}

.plans-notes__list {
    display: grid;
    gap: 0.6rem;
}

.plans-notes__list li {
    font-size: 0.85rem;
    color: var(--color-ink-soft);
    padding-left: 1.4em;
    position: relative;
    line-height: 2;
}

.plans-notes__list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.9em;
    width: 0.7em;
    height: 1px;
    background: var(--color-muted);
}

.section--dark .plans-notes__list li {
    color: rgba(255, 255, 255, 0.75);
}

/* ========================================
   Works（制作実績）
======================================== */
.works-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3.5rem;
}

.work-card {
    background: var(--color-white);
    border: 1px solid var(--color-line);
    transition: transform 0.35s var(--ease-out), box-shadow 0.35s ease;
}

.work-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 40px rgba(22, 19, 15, 0.08);
}

.work-card__thumb {
    aspect-ratio: 16 / 10;
    display: flex;
    align-items: center;
    justify-content: center;
    background:
        repeating-linear-gradient(
            -45deg,
            transparent 0 14px,
            rgba(22, 19, 15, 0.025) 14px 15px
        ),
        var(--color-paper);
    color: var(--color-muted);
    font-family: var(--font-serif);
    font-size: 0.85rem;
    letter-spacing: 0.24em;
    border-bottom: 1px solid var(--color-line);
    overflow: hidden;
}

.work-card__thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.work-card__body {
    padding: 1.5rem 1.5rem 1.75rem;
}

.work-card__title {
    font-family: var(--font-serif);
    font-size: 1.05rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    margin-bottom: 0.4rem;
}

.work-card__category {
    font-size: 0.75rem;
    letter-spacing: 0.16em;
    color: var(--color-accent);
}

.work-card__category::before {
    content: '― ';
    color: var(--color-line);
}

.about-intro__values {
    margin-top: clamp(3.5rem, 8vw, 6rem);
}

.about-intro__values-title {
    margin-bottom: 1.5rem;
    font-family: var(--font-serif);
    font-size: clamp(1.35rem, 2.8vw, 1.8rem);
    font-weight: 600;
    letter-spacing: 0.16em;
}

/* ========================================
   About Values（価値観）
======================================== */
.about-values {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}

.about-value {
    padding: clamp(2rem, 4vw, 3rem) clamp(1.5rem, 3vw, 2.5rem);
    border: 1px solid var(--color-line-dark);
    text-align: center;
}

.about-value__title {
    font-family: var(--font-serif);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 600;
    letter-spacing: 0.3em;
    text-indent: 0.3em;
    margin-bottom: 1.25rem;
    position: relative;
    padding-bottom: 1.25rem;
}

.about-value__title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 2rem;
    height: 1px;
    background: var(--color-accent);
}

.about-value__desc {
    font-size: 0.88rem;
    line-height: 2.2;
    color: rgba(255, 255, 255, 0.72);
    text-align: left;
}

/* 白背景セクション内で使う場合 */
.section:not(.section--dark) .about-value {
    border-color: var(--color-line);
    background: var(--color-white);
}

.section:not(.section--dark) .about-value__desc {
    color: var(--color-ink-soft);
}

/* ========================================
   Process Steps（制作の流れ）
======================================== */
.process-steps {
    margin-top: 3.5rem;
    display: grid;
    gap: 0;
    position: relative;
}

.process-step {
    display: flex;
    gap: clamp(1.5rem, 4vw, 3rem);
    position: relative;
    padding: 0 0 clamp(2.5rem, 5vw, 3.5rem) 0;
}

.process-step:last-child {
    padding-bottom: 0;
}

/* 縦のつなぎ線 */
.process-step::before {
    content: '';
    position: absolute;
    left: 1.75rem;
    top: 3.9rem;
    bottom: 0.4rem;
    width: 1px;
    background: var(--color-line);
}

.process-step:last-child::before {
    display: none;
}

.process-step__num {
    flex-shrink: 0;
    width: 3.5rem;
    height: 3.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-serif);
    font-size: 1.15rem;
    color: var(--color-accent);
    border: 1px solid var(--color-accent);
    border-radius: 50%;
    background: var(--color-paper);
    position: relative;
    z-index: 1;
}

.process-step__body {
    padding-top: 0.6rem;
}

.process-step__title {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    margin-bottom: 0.6rem;
}

.process-step__desc {
    font-size: 0.9rem;
    line-height: 2.2;
    color: var(--color-ink-soft);
    max-width: 44em;
}

/* ========================================
   FAQ
======================================== */
.faq-list {
    margin-top: 3.5rem;
    border-top: 1px solid var(--color-line);
}

.faq-item {
    border-bottom: 1px solid var(--color-line);
}

.faq-item__q {
    width: 100%;
    text-align: left;
    font-family: var(--font-serif);
    font-size: 1.02rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    line-height: 1.8;
    color: var(--color-ink);
    padding: 1.5rem 3.5rem 1.5rem 2.4rem;
    position: relative;
    transition: color 0.3s ease;
}

.faq-item__q:hover {
    color: var(--color-accent);
}

/* Q. マーク */
.faq-item__q::before {
    content: 'Q';
    position: absolute;
    left: 0.2rem;
    top: 1.5rem;
    font-family: var(--font-serif);
    color: var(--color-accent);
    font-size: 1.05rem;
}

/* 開閉アイコン（＋ / −） */
.faq-item__q::after {
    content: '';
    position: absolute;
    right: 1rem;
    top: 50%;
    width: 14px;
    height: 14px;
    transform: translateY(-50%);
    background:
        linear-gradient(var(--color-ink), var(--color-ink)) center / 14px 1px no-repeat,
        linear-gradient(var(--color-ink), var(--color-ink)) center / 1px 14px no-repeat;
    transition: transform 0.35s var(--ease-out);
}

.faq-item.is-open .faq-item__q::after {
    transform: translateY(-50%) rotate(45deg);
}

.faq-item__a {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.4s var(--ease-out);
}

.faq-item__a > p {
    overflow: hidden;
    font-size: 0.92rem;
    line-height: 2.2;
    color: var(--color-ink-soft);
    padding: 0 2.4rem;
    transition: padding 0.4s var(--ease-out);
}

.faq-item.is-open .faq-item__a {
    grid-template-rows: 1fr;
}

.faq-item.is-open .faq-item__a > p {
    padding: 0 2.4rem 1.75rem;
}

/* ========================================
   Contact Form
======================================== */
.contact-form {
    margin-top: 3rem;
    max-width: var(--width-narrow);
    display: grid;
    gap: 1.75rem;
}

.form-group {
    display: grid;
    gap: 0.6rem;
}

.form-group label {
    font-size: 0.85rem;
    letter-spacing: 0.1em;
    font-weight: 500;
}

.form-group label small {
    color: var(--color-accent);
    margin-left: 0.3em;
}

.form-group input,
.form-group select,
.form-group textarea {
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--color-ink);
    background: var(--color-white);
    border: 1px solid var(--color-line);
    padding: 0.9rem 1.1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    border-radius: 0;
    appearance: none;
    -webkit-appearance: none;
}

.form-group select {
    background-image:
        linear-gradient(45deg, transparent 50%, var(--color-muted) 50%),
        linear-gradient(135deg, var(--color-muted) 50%, transparent 50%);
    background-position:
        calc(100% - 1.4rem) 50%,
        calc(100% - 1rem) 50%;
    background-size: 6px 6px;
    background-repeat: no-repeat;
}

.form-group textarea {
    min-height: 180px;
    resize: vertical;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-ink);
    box-shadow: 0 0 0 3px rgba(184, 52, 28, 0.08);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #b5b0a6;
}

.contact-form .btn {
    justify-self: start;
    margin-top: 0.5rem;
}

/* ========================================
   Legal Pages（規約・ポリシー・特商法）
======================================== */
.legal-text {
    max-width: var(--width-narrow);
    font-size: 0.92rem;
    line-height: 2.2;
    color: var(--color-ink-soft);
}

.legal-item {
    margin-top: 2.75rem;
}

.legal-item h3 {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--color-ink);
    margin-bottom: 0.9rem;
    padding-left: 1rem;
    border-left: 2px solid var(--color-accent);
}

.legal-item ul {
    display: grid;
    gap: 0.4rem;
    margin-top: 0.6rem;
}

.legal-item ul li {
    padding-left: 1.4em;
    position: relative;
}

.legal-item ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 1em;
    width: 0.7em;
    height: 1px;
    background: var(--color-muted);
}

.legal-date {
    margin-top: 3.5rem;
    padding-top: 1.75rem;
    border-top: 1px solid var(--color-line);
    font-size: 0.85rem;
    color: var(--color-muted);
    text-align: right;
}

/* 特商法テーブル（dl形式にも対応） */
.legal-table {
    width: 100%;
    max-width: var(--width-narrow);
    border-collapse: collapse;
    font-size: 0.9rem;
}

.legal-table th,
.legal-table td {
    text-align: left;
    padding: 1.1rem 1.2rem;
    border-bottom: 1px solid var(--color-line);
    vertical-align: top;
    line-height: 2;
}

.legal-table th {
    width: 30%;
    font-weight: 500;
    white-space: nowrap;
    color: var(--color-ink);
}

/* ========================================
   Site Footer
======================================== */
.site-footer {
    background: var(--color-ink);
    color: #fff;
    padding: clamp(3.5rem, 7vw, 5.5rem) clamp(1.5rem, 5vw, 3rem) 2rem;
}

.site-footer__inner {
    max-width: var(--width-content);
    margin: 0 auto;
    display: grid;
    gap: 2.5rem;
}

.site-footer__brand {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: 0.16em;
}

.site-footer__nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 2rem;
    padding-bottom: 2.5rem;
    border-bottom: 1px solid var(--color-line-dark);
}

.site-footer__nav a {
    font-size: 0.85rem;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.75);
    transition: color 0.3s ease;
}

.site-footer__nav a:hover {
    color: #fff;
}

.site-footer__legal {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.75rem;
}

.site-footer__legal a {
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    color: rgba(255, 255, 255, 0.5);
    transition: color 0.3s ease;
}

.site-footer__legal a:hover {
    color: #fff;
}

.site-footer__copy {
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    color: rgba(255, 255, 255, 0.35);
}

/* ========================================
   Back to Top
======================================== */
.back-to-top {
    position: fixed;
    right: clamp(1rem, 3vw, 2rem);
    bottom: clamp(1rem, 3vw, 2rem);
    z-index: 80;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-ink);
    color: #fff;
    font-size: 1rem;
    border: 1px solid var(--color-ink);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: opacity 0.35s ease, visibility 0.35s ease, transform 0.35s ease, background 0.3s ease;
}

.back-to-top.is-visible {
    opacity: 1;
    visibility: visible;
    transform: none;
}

.back-to-top:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
}

/* ========================================
   WebGL演出（webgl.js）
   初期化に成功した要素にだけ .is-webgl が付き、
   CSS版の該当レイヤーを消して canvas 描画へ切り替える。
   common.js の処理はそのまま走らせるため、
   display ではなく visibility で不可視化する。
   WebGL不可・reduced-motion 時は .is-webgl が付かず従来表示のまま。
======================================== */

/* ヒーロー: 静止画25コマの3Dスクラブ（扉の開きに連動） */
.hero-gate__canvas {
    position: absolute;
    inset: 0;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.8s ease;
}

.hero-gate__media.is-webgl .hero-gate__canvas {
    opacity: 1;
}

.hero-gate__media.is-webgl img {
    visibility: hidden;
}

/* セクション背景: 群衆レイヤー（.scape）のみWebGL化。
   右端の侍コマ画像（.bg-switch__frame）はCSS版をそのまま使う */
.bg-switch__canvas {
    position: fixed;
    top: 0;
    left: 0;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.8s ease;
}

.bg-switch.is-webgl .bg-switch__canvas {
    opacity: 1;
}

.bg-switch.is-webgl .scape {
    visibility: hidden;
}

/* iOS/mobile memory guard: use reduced-resolution assets and avoid promoting
   every hidden character frame to a permanent GPU layer. */
@media (max-width: 768px) {
    .bg-switch--frames .bg-switch__frame {
        display: none;
        filter: none;
        will-change: auto;
    }

    .scape--travel .scape__layer {
        display: block;
        filter: none;
        will-change: auto;
    }

    .bg-switch--frames .bg-switch__frame:first-of-type,
    .bg-switch--frames .bg-switch__frame.is-mobile-active {
        display: block;
        filter: none;
        will-change: auto;
    }

    .section.is-mobile-frames-ready .bg-switch__frame:first-of-type:not(.is-mobile-active) {
        display: none;
    }

    .hero-gate__media,
    .hero-gate__inner,
    .hero-gate__door {