/* ============================================
   下層ページ共通スタイル
   （五つの実践 個別ページ／お問い合わせ）
   デザインコンセプト「凛」を継承
   ============================================ */

:root {
    --green-deep: #0B291C;   /* 神宮の杜の深緑 */
    --green-shadow: #071E14; /* 杜の闇 */
    --washi: #F7F4EC;        /* 生成り・和紙 */
    --washi-dim: #EFEBDF;    /* 玉砂利 */
    --ink: #26312B;          /* 墨 */
    --brass: #B5A47E;        /* 真鍮・抑えた金 */
    --brass-soft: rgba(181,164,126,0.4);
    --serif: "Shippori Mincho B1", "Noto Serif JP", serif;
    --sans: "Noto Sans JP", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    background: var(--washi);
    color: var(--ink);
    font-family: var(--serif);
    font-feature-settings: "palt";
    line-height: 2;
    letter-spacing: 0.08em;
    -webkit-font-smoothing: antialiased;
}

::selection { background: var(--green-deep); color: var(--washi); }

.label {
    font-family: var(--sans);
    font-weight: 400;
    font-size: 0.65rem;
    letter-spacing: 0.45em;
    text-transform: uppercase;
    color: var(--brass);
}

.reveal { opacity: 0; transform: translateY(16px); transition: opacity 1.2s ease, transform 1.2s ease; }
.reveal.on { opacity: 1; transform: none; }

/* ---------- ナビ ---------- */
nav.site {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    display: flex; justify-content: space-between; align-items: center;
    padding: 1.6rem 3rem;
    mix-blend-mode: difference;
    color: #d8d4c8;
}
nav.site .brand { font-size: 1rem; letter-spacing: 0.35em; font-weight: 500; text-decoration: none; color: inherit; }
nav.site .back {
    font-family: var(--sans); font-size: 0.72rem; letter-spacing: 0.3em; font-weight: 300;
    color: inherit; text-decoration: none; opacity: 0.85; transition: opacity .3s;
}
nav.site .back:hover { opacity: 1; }

/* ---------- 扉 HERO ---------- */
.p-hero {
    background:
        radial-gradient(ellipse 120% 80% at 75% -10%, rgba(181,164,126,0.10) 0%, transparent 55%),
        radial-gradient(ellipse 100% 100% at 15% 115%, rgba(7,30,20,0.9) 0%, transparent 60%),
        var(--green-deep);
    color: var(--washi);
    position: relative;
    overflow: hidden;
    padding: 13rem 2rem 7rem;
}
/* 杉木立を思わせる極細の縦線 */
.p-hero::before {
    content: "";
    position: absolute; inset: 0;
    background-image: repeating-linear-gradient(90deg,
        transparent 0, transparent 119px,
        rgba(247,244,236,0.035) 119px, rgba(247,244,236,0.035) 120px);
    pointer-events: none;
}
.p-hero-inner {
    max-width: 1080px; margin: 0 auto;
    position: relative; z-index: 1;
    display: grid; grid-template-columns: 200px 1fr; gap: 5rem;
    align-items: center;
}
.p-hero-kanji {
    /* 数字表記。旧字より字面が細いぶん、やや小ぶりに詰める */
    font-size: 5.4rem; line-height: 1; font-weight: 400;
    letter-spacing: 0.04em;
    font-feature-settings: "lnum";
    color: transparent;
    -webkit-text-stroke: 1px var(--brass);
    display: block;
}
.p-hero h1 {
    font-size: clamp(1.8rem, 3.6vw, 2.6rem);
    font-weight: 500; letter-spacing: 0.24em; line-height: 1.8;
    margin-top: 1.4rem;
}
.p-hero .rule {
    display: block; width: 4rem; height: 1px; background: var(--brass);
    margin-top: 2.2rem;
}
/* ---------- 本文 ITEMS ---------- */
.p-body { padding: 2rem 0 0; }

.p-item {
    max-width: 1080px; margin: 0 auto;
    padding: 5.5rem 2rem;
    display: grid; grid-template-columns: 200px 1fr; gap: 5rem;
    align-items: start;
    border-bottom: 1px solid var(--brass-soft);
}
.p-item:last-of-type { border-bottom: none; }

/* 見出し番号は読んでいる間、左に留まる */
.p-item-index { position: sticky; top: 7rem; }
.p-item-index .no {
    font-size: 2rem; font-weight: 400; letter-spacing: 0.1em;
    color: var(--brass);
    font-feature-settings: "palt", "lnum";
    display: block;
}
.p-item-index .bar {
    display: block; width: 1px; height: 4rem; margin-top: 1.8rem;
    background: linear-gradient(to bottom, var(--brass), transparent);
}

.p-item-body { max-width: 660px; }
.p-item-body h2 {
    font-size: 1.15rem; font-weight: 600; letter-spacing: 0.2em;
    color: var(--green-deep); line-height: 2;
    margin-bottom: 2.2rem;
}
.p-item-body p {
    font-size: 0.92rem; line-height: 2.6; letter-spacing: 0.09em;
    text-align: justify;
}
/* レスポンシブは広い順に記述する（max-width 同士は後勝ちのため） */

/* ---------- 頁送り PAGER ---------- */
.p-pager {
    background: var(--green-deep);
    color: var(--washi);
    position: relative; overflow: hidden;
    padding: 5rem 2rem;
}
.p-pager::before {
    content: "";
    position: absolute; inset: 0;
    background-image: repeating-linear-gradient(90deg,
        transparent 0, transparent 119px,
        rgba(247,244,236,0.03) 119px, rgba(247,244,236,0.03) 120px);
}
.p-pager-inner {
    max-width: 1080px; margin: 0 auto;
    position: relative; z-index: 1;
    display: flex; justify-content: space-between; align-items: stretch; gap: 2rem;
}
.p-pager a {
    color: var(--washi); text-decoration: none;
    display: flex; flex-direction: column; gap: 0.7rem;
    transition: opacity .3s;
    max-width: 45%;
}
.p-pager a:hover { opacity: 0.65; }
.p-pager a .dir {
    font-family: var(--sans); font-size: 0.62rem; letter-spacing: 0.4em; font-weight: 300;
    color: var(--brass); text-transform: uppercase;
}
.p-pager a .ttl { font-size: 0.95rem; letter-spacing: 0.2em; font-weight: 500; line-height: 1.9; }
.p-pager a.next { text-align: right; margin-left: auto; }
.p-pager .to-index {
    display: block; text-align: center;
    margin-top: 4rem; padding-top: 2.5rem;
    border-top: 1px solid rgba(181,164,126,0.25);
    position: relative; z-index: 1;
    font-family: var(--sans); font-size: 0.68rem; letter-spacing: 0.35em; font-weight: 300;
    color: rgba(247,244,236,0.7); text-decoration: none;
    max-width: 1080px; margin-left: auto; margin-right: auto;
}
.p-pager .to-index:hover { color: var(--washi); }
/* ---------- 脚 FOOTER ---------- */
.p-foot {
    background: var(--green-shadow);
    color: rgba(247,244,236,0.45);
    padding: 3rem 2rem;
}
.p-foot-inner {
    max-width: 1080px; margin: 0 auto;
    display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem;
    font-family: var(--sans); font-weight: 300; font-size: 0.62rem; letter-spacing: 0.3em;
}
.p-foot b {
    font-family: var(--serif); font-weight: 500; font-size: 0.8rem; letter-spacing: 0.4em;
    color: rgba(247,244,236,0.75);
}

/* ============================================
   関連リンク（各活動の公式サイトへ）
   ============================================ */
.p-links {
    margin-top: 2.6rem; padding-top: 1.8rem;
    border-top: 1px dotted var(--brass-soft);
    display: flex; flex-wrap: wrap; gap: 0.8rem 2.4rem;
}
.p-link {
    display: inline-flex; align-items: baseline; gap: 0.7rem;
    font-family: var(--sans); font-size: 0.74rem; letter-spacing: 0.14em; font-weight: 400;
    color: var(--green-deep); text-decoration: none;
    transition: opacity .3s;
}
.p-link:hover { opacity: 0.6; }
.p-link::before {
    content: "◆"; color: var(--brass); font-size: 0.55rem; flex-shrink: 0;
}
/* 外部サイトである旨を示す */
.p-link::after {
    content: "↗"; color: var(--brass); font-size: 0.7rem; flex-shrink: 0;
}
/* サイト内リンクには外部マークを付けない */
.p-link-inner::after { content: "—"; }

/* ============================================
   講演・著書 WORKS（practice-05 に統合）
   ============================================ */
.p-works {
    max-width: 1080px; margin: 6rem auto 0;
    padding: 6rem 2rem 2rem;
    border-top: 1px solid var(--brass-soft);
}
.p-works-head h2 {
    font-size: 1.35rem; letter-spacing: 0.45em; font-weight: 600;
    color: var(--green-deep); margin-top: 1.2rem;
}
.p-works-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 4rem;
    margin-top: 4rem;
}
.p-work h3 {
    font-size: 1.02rem; font-weight: 600; letter-spacing: 0.2em;
    color: var(--green-deep); margin-bottom: 1.4rem;
}
.p-work p { font-size: 0.88rem; line-height: 2.4; letter-spacing: 0.08em; text-align: justify; }
.p-work-cta {
    display: inline-block; margin-top: 2rem;
    font-family: var(--sans); font-size: 0.72rem; letter-spacing: 0.3em; font-weight: 400;
    color: var(--green-deep); text-decoration: none;
    border-bottom: 1px solid var(--brass); padding-bottom: 0.5rem;
    transition: opacity .3s;
}
.p-work-cta:hover { opacity: 0.6; }
.p-book { display: flex; gap: 2.2rem; align-items: flex-start; }
.p-book-cover {
    flex-shrink: 0;
    width: 116px; height: 172px;
    background: var(--washi);
    border: 1px solid var(--brass-soft);
    border-right: 4px solid var(--brass);
    display: flex; align-items: center; justify-content: center;
    writing-mode: vertical-rl; white-space: nowrap;
    font-size: 0.8rem; letter-spacing: 0.2em; font-weight: 500; color: var(--green-deep);
    box-shadow: 6px 8px 24px rgba(11,41,28,0.08);
}

/* ============================================
   原点と歩み STORY
   ============================================ */

/* 言葉 */
.s-quote {
    background:
        radial-gradient(ellipse 130% 90% at 50% 120%, rgba(181,164,126,0.10) 0%, transparent 55%),
        var(--green-deep);
    color: var(--washi);
    padding: 8rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.s-quote::before {
    content: "";
    position: absolute; inset: 0;
    background-image: repeating-linear-gradient(90deg,
        transparent 0, transparent 119px,
        rgba(247,244,236,0.03) 119px, rgba(247,244,236,0.03) 120px);
}
/* 扉の直後に置く場合は、扉と引用をひと続きの深緑として扱う。
   背景は親側（.p-hero-wrap）が持ち、継ぎ目が出ないようにする */
.p-hero-wrap {
    background:
        radial-gradient(ellipse 110% 70% at 75% -5%, rgba(181,164,126,0.10) 0%, transparent 55%),
        radial-gradient(ellipse 90% 80% at 15% 105%, rgba(7,30,20,0.9) 0%, transparent 60%),
        var(--green-deep);
    position: relative;
    overflow: hidden;
}
.p-hero-wrap::before {
    content: "";
    position: absolute; inset: 0;
    background-image: repeating-linear-gradient(90deg,
        transparent 0, transparent 119px,
        rgba(247,244,236,0.035) 119px, rgba(247,244,236,0.035) 120px);
    pointer-events: none;
}
.p-hero-wrap .p-hero,
.p-hero-wrap .s-quote { background: transparent; }
.p-hero-wrap .p-hero::before,
.p-hero-wrap .s-quote::before { display: none; }
.p-hero-wrap .p-hero { padding-bottom: 4rem; }
.p-hero-wrap .s-quote { padding-top: 2rem; }
.s-quote-inner { position: relative; z-index: 1; }
.s-quote blockquote {
    font-size: clamp(1.3rem, 2.6vw, 2rem);
    font-weight: 500; letter-spacing: 0.18em; line-height: 2.3;
}
.s-quote .who {
    margin-top: 3rem;
    font-family: var(--sans); font-weight: 300; font-size: 0.7rem; letter-spacing: 0.45em;
    color: var(--brass);
}

/* 原点 — 見出しは留め置き、本文は一本の読み筋で */
.origin { background: var(--washi-dim); border-bottom: 1px solid var(--brass-soft); }
.origin-inner {
    max-width: 1080px; margin: 0 auto;
    padding: 8rem 2rem;
    display: grid; grid-template-columns: 200px 1fr; gap: 5rem;
    align-items: start;
}
.origin-head { position: sticky; top: 7rem; }
.origin-head h2 {
    font-size: 1.5rem; letter-spacing: 0.5em; font-weight: 600;
    color: var(--green-deep); margin-top: 1.2rem;
}
.origin-head .bar {
    display: block; width: 1px; height: 5.5rem; margin-top: 2.5rem;
    background: linear-gradient(to bottom, var(--brass), transparent);
}
.origin-body { max-width: 660px; }
.origin-body p {
    font-size: 0.92rem; line-height: 2.6; letter-spacing: 0.09em;
    margin-bottom: 2.4rem; text-align: justify;
}
.origin-body .lead {
    font-size: 1.02rem; line-height: 2.5; letter-spacing: 0.11em;
    font-weight: 500; color: var(--green-deep); margin-bottom: 2.8rem;
}
.origin-body .resolve {
    margin-top: 3.5rem; padding-top: 3rem;
    border-top: 1px solid var(--brass-soft);
    font-size: 1rem; line-height: 2.5; letter-spacing: 0.12em;
    font-weight: 500; color: var(--green-deep);
    text-align: left; margin-bottom: 0;
}

/* 歩み */
.chrono { max-width: 1080px; margin: 0 auto; padding: 8rem 2rem; }
.chrono-head h2 {
    font-size: 1.5rem; letter-spacing: 0.5em; font-weight: 600;
    color: var(--green-deep); margin-top: 1.2rem;
}
.chrono-list { margin-top: 4rem; list-style: none; }
.chrono-list li {
    display: grid; grid-template-columns: 200px 1fr; gap: 3rem;
    padding: 2.2rem 0; border-bottom: 1px solid var(--brass-soft);
    align-items: baseline;
}
.chrono-list .era {
    font-size: 1.15rem; font-weight: 500; letter-spacing: 0.1em; color: var(--brass);
    font-feature-settings: "palt", "lnum";
    white-space: nowrap;
}
.chrono-list .what { font-size: 0.9rem; line-height: 2.3; }
.chrono-list .what strong {
    font-weight: 600; color: var(--green-deep); letter-spacing: 0.12em;
    display: block; margin-bottom: 0.5rem; line-height: 2;
}

/* ============================================
   お問い合わせフォーム CONTACT
   ============================================ */
.c-wrap { max-width: 720px; margin: 0 auto; padding: 6rem 2rem 8rem; }

.c-intro {
    font-size: 0.92rem; line-height: 2.6; letter-spacing: 0.09em;
    margin-bottom: 4.5rem;
}
.c-intro .tel {
    display: block; margin-top: 2rem; padding-top: 2rem;
    border-top: 1px solid var(--brass-soft);
    font-family: var(--sans); font-size: 0.75rem; letter-spacing: 0.2em; color: #6b7268;
}

.c-field { margin-bottom: 3.4rem; }
.c-fieldset { border: none; padding: 0; margin: 0; }
.c-fieldset > .c-label { padding: 0; }
.c-label {
    display: flex; align-items: center; gap: 0.9rem; margin-bottom: 1.3rem;
    font-family: var(--sans); font-size: 0.75rem; letter-spacing: 0.25em;
    font-weight: 400; color: var(--green-deep);
}
.c-req, .c-opt {
    font-size: 0.58rem; letter-spacing: 0.15em; padding: 0.28rem 0.62rem;
    font-weight: 400; flex-shrink: 0;
}
.c-req { background: var(--green-deep); color: var(--washi); }
.c-opt { border: 1px solid var(--brass-soft); color: #7a8078; }
.c-note {
    font-family: var(--sans); font-size: 0.68rem; letter-spacing: 0.1em;
    color: #7a8078; margin-top: 0.9rem; line-height: 1.9;
}

/* 入力欄は罫線のみ。囲みを持たせない */
.c-wrap input[type="text"],
.c-wrap input[type="email"],
.c-wrap input[type="tel"],
.c-wrap textarea {
    width: 100%; background: transparent;
    border: none; border-bottom: 1px solid var(--brass-soft);
    padding: 0.9rem 0.2rem;
    font-family: var(--serif); font-size: 1rem; color: var(--ink);
    letter-spacing: 0.08em; line-height: 2;
    transition: border-color .3s;
}
.c-wrap input:focus, .c-wrap textarea:focus {
    outline: none; border-bottom-color: var(--green-deep);
}
.c-wrap input::placeholder, .c-wrap textarea::placeholder {
    color: #b3b5ab; font-size: 0.9rem; letter-spacing: 0.06em;
}
.c-wrap textarea { resize: vertical; min-height: 12rem; }

/* 選択肢（菱形マーク） */
.c-choice {
    display: flex; align-items: flex-start; gap: 1.1rem;
    padding: 1.15rem 0.4rem;
    border-bottom: 1px dotted var(--brass-soft);
    cursor: pointer; transition: background .3s;
}
.c-choice:hover { background: rgba(181,164,126,0.08); }
.c-choice input { position: absolute; opacity: 0; width: 0; height: 0; }
.c-choice .mark {
    width: 11px; height: 11px; margin-top: 0.75rem; flex-shrink: 0;
    border: 1px solid var(--brass); transform: rotate(45deg);
    transition: background .3s, border-color .3s;
}
.c-choice input:checked ~ .mark { background: var(--green-deep); border-color: var(--green-deep); }
.c-choice input:focus-visible ~ .mark { box-shadow: 0 0 0 3px rgba(181,164,126,0.45); }
.c-choice .txt { font-size: 0.95rem; letter-spacing: 0.12em; line-height: 2.2; }
.c-choice input:checked ~ .txt { color: var(--green-deep); font-weight: 500; }

/* 講演依頼を選んだときだけ開く追加項目 */
.c-extra {
    display: none;
    margin-top: 2.6rem; padding: 2.6rem 2.4rem 0.6rem;
    background: var(--washi-dim);
    border-left: 2px solid var(--brass);
}
.c-extra.on { display: block; }
.c-extra .c-extra-ttl {
    font-family: var(--sans); font-size: 0.68rem; letter-spacing: 0.3em;
    color: var(--brass); margin-bottom: 2.2rem;
}

/* 同意 */
.c-consent { margin: 1rem 0 3.5rem; }
.c-consent .c-choice { border-bottom: none; }
.c-consent .mark { border-radius: 0; transform: none; margin-top: 0.85rem; }
.c-consent a { color: var(--green-deep); text-underline-offset: 4px; }
.c-consent .c-note { margin-top: 0.4rem; }

/* エラー */
.c-error {
    display: none; margin-top: 0.9rem;
    font-family: var(--sans); font-size: 0.7rem; letter-spacing: 0.1em; color: #A63D2F;
}
.c-field.invalid .c-error { display: block; }
.c-field.invalid input, .c-field.invalid textarea { border-bottom-color: #A63D2F; }

/* 送信 */
.c-submit-row { text-align: center; margin-top: 1rem; }
.c-submit {
    display: inline-block; padding: 1.35rem 4.5rem;
    background: var(--green-deep); color: var(--washi);
    border: none; cursor: pointer;
    font-family: var(--sans); font-size: 0.78rem; letter-spacing: 0.35em; font-weight: 400;
    transition: background .35s, color .35s;
}
.c-submit:hover { background: var(--brass); color: var(--green-shadow); }

/* 送信後 */
.c-done { display: none; text-align: center; padding: 4rem 0 2rem; }
.c-done.on { display: block; }
.c-done h2 {
    font-size: 1.4rem; letter-spacing: 0.4em; font-weight: 600;
    color: var(--green-deep); margin: 1.4rem 0 2.5rem;
}
.c-done p { font-size: 0.92rem; line-height: 2.6; letter-spacing: 0.09em; }
.c-done .devnote {
    margin-top: 3rem; padding: 1.4rem 1.6rem;
    border: 1px dashed var(--brass);
    font-family: var(--sans); font-size: 0.7rem; letter-spacing: 0.08em;
    line-height: 2; color: #7a6f52; text-align: left;
}
.c-done .back {
    display: inline-block; margin-top: 3rem;
    font-family: var(--sans); font-size: 0.72rem; letter-spacing: 0.3em;
    color: var(--green-deep); text-decoration: none;
    border-bottom: 1px solid var(--brass); padding-bottom: 0.5rem;
}

/* ============================================
   レスポンシブ
   max-width 同士は後に書いた方が勝つため、
   必ず「広い順 → 狭い順」で記述すること
   ============================================ */

/* --- タブレット・小型ノート --- */
@media (max-width: 1000px) {
    .p-hero-inner, .p-item { grid-template-columns: 150px 1fr; gap: 3rem; }
    .p-hero-kanji { font-size: 4.4rem; }
}

/* --- スマートフォン --- */
@media (max-width: 768px) {
    nav.site { padding: 1.2rem 1.5rem; gap: 1rem; }
    nav.site .brand { font-size: 0.8rem; letter-spacing: 0.18em; white-space: nowrap; }
    nav.site .brand .en { display: none; }
    nav.site .back { font-size: 0.62rem; letter-spacing: 0.2em; white-space: nowrap; }

    .p-hero { padding: 8rem 1.6rem 4.5rem; }
    .p-hero-inner { grid-template-columns: 1fr; gap: 1.8rem; }
    .p-hero-kanji { font-size: 3.2rem; }
    .p-hero h1 {
        font-size: 1.6rem; letter-spacing: 0.14em; line-height: 1.9;
        margin-top: 1rem;
    }
    .p-hero .rule { margin-top: 1.8rem; }

    .p-item { grid-template-columns: 1fr; gap: 1.6rem; padding: 4rem 1.6rem; }
    .p-item-index { position: static; display: flex; align-items: center; gap: 1.2rem; }
    .p-item-index .no { font-size: 1.4rem; }
    .p-item-index .bar { width: 3rem; height: 1px; margin-top: 0; background: var(--brass); }
    .p-item-body h2 { font-size: 1.02rem; letter-spacing: 0.14em; margin-bottom: 1.6rem; }
    .p-item-body p { text-align: left; }

    .p-pager { padding: 3.5rem 1.6rem; }
    .p-pager-inner { flex-direction: column; gap: 2.5rem; }
    .p-pager a, .p-pager a.next { max-width: none; text-align: left; margin-left: 0; }
    .p-pager .to-index { margin-top: 3rem; }

    .p-foot-inner { justify-content: flex-start; gap: 0.6rem; flex-direction: column; align-items: flex-start; }

    .p-links { gap: 0.6rem 1.4rem; margin-top: 2.2rem; }

    .p-works { margin-top: 3.5rem; padding: 4rem 1.6rem 1rem; }
    .p-works-grid { grid-template-columns: 1fr; gap: 3.5rem; margin-top: 3rem; }
    .p-work p { text-align: left; }
    .p-book { gap: 1.4rem; }
    .p-book-cover { width: 92px; height: 138px; font-size: 0.72rem; }

    .s-quote { padding: 5rem 1.6rem; }
    .origin-inner { grid-template-columns: 1fr; gap: 2.5rem; padding: 5rem 1.6rem; }
    .origin-head { position: static; }
    .origin-head .bar { display: none; }
    .origin-body p { text-align: left; }
    .chrono { padding: 5rem 1.6rem; }
    .chrono-list li { grid-template-columns: 1fr; gap: 0.6rem; }
    .chrono-list .era { font-size: 1rem; }

    .c-wrap { padding: 4rem 1.6rem 5rem; }
    .c-intro { margin-bottom: 3rem; }
    .c-field { margin-bottom: 2.8rem; }
    .c-extra { padding: 2rem 1.4rem 0.4rem; margin-top: 2rem; }
    .c-submit { width: 100%; padding: 1.35rem 1rem; letter-spacing: 0.25em; }
}