/* ============================================================
       CSS変数 ◆編集箇所：カラー変更はここで
       ============================================================ */
    :root {
      --c-main:      rgb(250,130,0);
      --c-main-a12:  rgba(250,130,0,0.12);
      --c-main-dark: rgb(210,100,0);
      --c-accent:    #005BAC;
      --c-dark:      #333333;
      --c-mid:       #666666;
      --c-light:     #F5F5F5;
      --c-white:     #FFFFFF;
      --c-gold:      #C9A84C;
      --f-serif:     'Noto Serif JP','Georgia',serif;
      --f-sans:      'Noto Sans JP','Hiragino Sans',sans-serif;
      --f-display:   'Playfair Display',serif;
      --r-md: 8px;
      --r-lg: 16px;
      --sh-sm: 0 2px 8px rgba(0,0,0,0.08);
      --sh-md: 0 8px 32px rgba(0,0,0,0.12);
      --sh-lg: 0 16px 48px rgba(0,0,0,0.16);
      --max-w: 1100px;
      --py: 96px;
      --hh: 64px;
    }

    /* ============================================================
       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(--f-sans);
      color: var(--c-dark);
      background: var(--c-white);
      line-height: 1.8;
      overflow-x: hidden;
      -webkit-text-size-adjust: 100%;
    }
    /* MTが出力するデフォルトスタイルを上書き */
    body a { text-decoration: none; color: inherit; }
    body ul { list-style: none; }
    body img { max-width: 100%; height: auto; display: block; }
    body address { font-style: normal; }
    /* MTのグローバルナビ・ヘッダーを隠す（サイト構成に応じて調整） */
    /* ◆編集箇所：MTのヘッダー/フッターを非表示にする場合はセレクタを合わせてください */
    /* #banner, #nav, #footer-wrapper { display: none !important; } */

    /* ============================================================
       レイアウト
       ============================================================ */
    .c10 { max-width: var(--max-w); margin: 0 auto; padding: 0 20px; }
    .sec-label {
      display: inline-flex; align-items: center; gap: 10px;
      font-size: 0.68rem; font-weight: 700; letter-spacing: 0.22em;
      text-transform: uppercase; color: var(--c-main); margin-bottom: 12px;
    }
    .sec-label::before { content: ''; width: 24px; height: 2px; background: var(--c-main); display: block; }
    .sec-title {
      font-family: var(--f-serif);
      font-size: clamp(1.5rem, 4.5vw, 2.4rem);
      font-weight: 700; line-height: 1.45;
    }
    .sec-title em { font-style: normal; color: var(--c-main); }

    /* フェードイン */
    .fd { opacity: 0; transform: translateY(28px); transition: opacity 0.65s ease, transform 0.65s ease; }
    .fd.on { opacity: 1; transform: translateY(0); }
    .fd.d1 { transition-delay: 0.12s; }
    .fd.d2 { transition-delay: 0.24s; }
    .fd.d3 { transition-delay: 0.36s; }
    .fd.d4 { transition-delay: 0.48s; }
    .fd.d5 { transition-delay: 0.60s; }
    @media (prefers-reduced-motion: reduce) {
      .fd { opacity: 1; transform: none; transition: none; }
    }

    /* ============================================================
       固定ヘッダー
       ============================================================ */
    #c10-hdr {
      position: fixed; top: 0; left: 0; right: 0; z-index: 9999;
      height: var(--hh);
      background: rgba(255,255,255,0.97);
      border-bottom: 1px solid rgba(0,0,0,0.07);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      transition: box-shadow 0.3s;
    }
    #c10-hdr.sc { box-shadow: var(--sh-sm); }
    .hdr-wrap {
      max-width: var(--max-w); margin: 0 auto; padding: 0 20px;
      height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px;
    }
    .hdr-logo { display: flex; flex-direction: column; gap: 3px; flex-shrink: 0; }
    .hdr-badge {
      background: var(--c-main); color: #fff;
      font-size: 0.58rem; font-weight: 700; letter-spacing: 0.1em;
      padding: 2px 8px; border-radius: 2px; width: fit-content;
    }
    .hdr-name {
      font-family: var(--f-serif);
      font-size: clamp(0.6rem, 1.8vw, 0.8rem);
      font-weight: 700; white-space: nowrap;
    }
    .hdr-nav { display: flex; gap: 22px; align-items: center; }
    .hdr-nav a {
      font-size: 0.74rem; font-weight: 500; color: var(--c-mid);
      letter-spacing: 0.04em; white-space: nowrap;
      position: relative; padding-bottom: 2px; transition: color 0.2s;
    }
    .hdr-nav a::after {
      content: ''; position: absolute; bottom: 0; left: 0;
      width: 0; height: 1px; background: var(--c-main); transition: width 0.3s;
    }
    .hdr-nav a:hover { color: var(--c-main); }
    .hdr-nav a:hover::after { width: 100%; }
    /* ハンバーガー */
    .hbg {
      display: none; flex-direction: column; justify-content: center; gap: 5px;
      width: 40px; height: 40px; background: none; border: none; cursor: pointer; padding: 6px; flex-shrink: 0;
    }
    .hbg span { display: block; width: 100%; height: 2px; background: var(--c-dark); border-radius: 2px; transition: transform 0.3s, opacity 0.3s; }
    .hbg.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .hbg.open span:nth-child(2) { opacity: 0; }
    .hbg.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
    /* モバイルメニュー */
    #c10-mob {
      display: none; position: fixed;
      top: var(--hh); left: 0; right: 0;
      background: #fff; border-bottom: 2px solid var(--c-main);
      z-index: 9998; padding: 8px 0 20px; box-shadow: var(--sh-md);
    }
    #c10-mob.open { display: block; }
    #c10-mob a {
      display: block; padding: 13px 24px;
      font-size: 0.9rem; font-weight: 500; color: var(--c-dark);
      border-bottom: 1px solid var(--c-light); transition: background 0.15s, color 0.15s;
    }
    #c10-mob a:hover { background: var(--c-main-a12); color: var(--c-main); }

    /* ============================================================
       1. ヒーロー
       ============================================================ */
    #c10-hero {
      position: relative; min-height: 100svh; min-height: 100vh;
      display: flex; align-items: center; justify-content: center;
      overflow: hidden; padding-top: var(--hh);
    }
    /* ◆編集箇所：キャンパス写真は background-image: url(...) で指定 */
    .hero-bg {
      position: absolute; inset: 0;
      background:
        linear-gradient(155deg, rgba(0,30,65,0.88) 0%, rgba(0,60,120,0.72) 45%, rgba(180,80,0,0.55) 100%),
        linear-gradient(160deg, #1a3a5c 0%, #0d1e36 50%, #2d1500 100%);
      background-size: cover; background-position: center;
      will-change: transform;
    }
    .hero-orb {
      position: absolute; border-radius: 50%; filter: blur(70px); pointer-events: none;
    }
    .hero-orb-1 { width: min(560px,80vw); height: min(560px,80vw); background: rgba(250,130,0,0.18); top: -80px; right: -80px; }
    .hero-orb-2 { width: min(380px,60vw); height: min(380px,60vw); background: rgba(0,91,172,0.20); bottom: -60px; left: -60px; }
    .hero-inner {
      position: relative; z-index: 2; color: #fff; text-align: center;
      padding: 60px 20px 100px; width: 100%;
    }
    .hero-pill {
      display: inline-flex; align-items: center; gap: 10px;
      font-size: 0.72rem; font-weight: 700; letter-spacing: 0.2em;
      color: rgba(255,255,255,0.88); border: 1px solid rgba(255,255,255,0.22);
      padding: 7px 20px; border-radius: 40px;
      background: rgba(255,255,255,0.06); margin-bottom: 28px;
    }
    .hero-pill-b { background: var(--c-main); color: #fff; font-size: 0.65rem; padding: 2px 10px; border-radius: 20px; }
    .hero-yrs { display: flex; align-items: center; justify-content: center; gap: clamp(8px,3vw,20px); margin-bottom: 28px; }
    .hero-y {
      font-family: var(--f-display);
      font-size: clamp(2.6rem,12vw,7.5rem);
      font-weight: 700; line-height: 1; color: #fff;
    }
    .hero-y.ac { color: var(--c-main); }
    .hero-arr { font-size: clamp(1.4rem,5vw,3rem); color: var(--c-gold); opacity: 0.85; }
    .hero-h1 {
      font-family: var(--f-serif);
      font-size: clamp(1.2rem,4.5vw,2.4rem);
      font-weight: 700; line-height: 1.55; margin-bottom: 18px; letter-spacing: 0.04em;
    }
    .hero-sub {
      font-size: clamp(0.82rem,2.2vw,1rem); color: rgba(255,255,255,0.8);
      max-width: 560px; margin: 0 auto 36px; line-height: 2;
    }
    .hero-btn {
      display: inline-flex; align-items: center; gap: 10px;
      background: var(--c-main); color: #fff; font-weight: 700;
      padding: 15px 34px; border-radius: 50px; font-size: 0.9rem; letter-spacing: 0.07em;
      box-shadow: 0 4px 20px rgba(250,130,0,0.5);
      transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
    }
    .hero-btn:hover { background: var(--c-main-dark); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(250,130,0,0.55); }
    .hero-scroll {
      position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%);
      display: flex; flex-direction: column; align-items: center; gap: 6px;
      color: rgba(255,255,255,0.5); font-size: 0.62rem; letter-spacing: 0.18em;
    }
    .hero-scroll-ln { width: 1px; height: 40px; background: linear-gradient(to bottom, rgba(255,255,255,0.55), transparent); animation: sdrop 2s infinite; }
    @keyframes sdrop {
      0%   { transform: scaleY(0); transform-origin: top; }
      49%  { transform: scaleY(1); transform-origin: top; }
      50%  { transform: scaleY(1); transform-origin: bottom; }
      100% { transform: scaleY(0); transform-origin: bottom; }
    }

    /* ============================================================
       2・2.5 理事長あいさつ／学長メッセージ 共通
       ============================================================ */
    .msg-sec { padding: var(--py) 0; }
    .msg-sec.bg-w { background: #fff; }
    .msg-sec.bg-g { background: var(--c-light); }
    .msg-grid { display: grid; grid-template-columns: 240px 1fr; gap: 52px; align-items: start; }
    .msg-photo-col { position: sticky; top: calc(var(--hh) + 20px); }
    .msg-frame {
      position: relative; background: #dde4ec;
      border-radius: var(--r-md); overflow: hidden; aspect-ratio: 3/4;
    }
    .msg-frame-line {
      position: absolute; top: 0; left: 0; width: 4px; height: 100%;
      background: linear-gradient(to bottom, var(--c-main), var(--c-accent));
      z-index: 2;
    }
    /* 写真本体 */
    .msg-img {
      width: 100%; height: 100%; object-fit: cover; object-position: center top;
      display: block; position: relative; z-index: 1;
    }
    /* ◆編集箇所：写真プレースホルダー（img タグに差し替え後は .msg-ph ごと削除可） */
    .msg-ph {
      width: 100%; height: 100%; display: flex; flex-direction: column;
      align-items: center; justify-content: center; gap: 12px;
      color: rgba(0,0,0,0.3); font-size: 0.75rem; text-align: center; padding: 20px;
    }
    .msg-ph svg { width: 56px; height: 56px; }
    .msg-namebl { margin-top: 18px; text-align: center; }
    .msg-affil { font-size: 0.72rem; color: var(--c-mid); line-height: 1.7; margin-bottom: 5px; }
    .msg-name  { font-family: var(--f-serif); font-size: 1.1rem; font-weight: 700; }
    .msg-heading {
      font-family: var(--f-serif);
      font-size: clamp(1.2rem,3.5vw,1.8rem); font-weight: 700; line-height: 1.5;
      padding-bottom: 14px; border-bottom: 2px solid var(--c-main); margin-bottom: 28px;
    }
    .msg-body p { font-size: clamp(0.88rem,2vw,0.95rem); line-height: 2.1; margin-bottom: 18px; }
    .msg-sign {
      margin-top: 36px; padding: 20px 22px;
      background: rgba(0,0,0,0.04);
      border-left: 3px solid var(--c-main);
      border-radius: 0 var(--r-md) var(--r-md) 0;
    }
    .msg-sign p { font-family: var(--f-serif); font-size: 0.85rem; line-height: 1.95; }

    /* ============================================================
       3. 10周年メッセージ
       ============================================================ */
    #c10-anv {
      padding: var(--py) 0; background: var(--c-dark); color: #fff;
      position: relative; overflow: hidden;
    }
    .anv-dots {
      position: absolute; inset: 0; opacity: 0.04;
      background-image: radial-gradient(circle, #fff 1px, transparent 1px);
      background-size: 30px 30px;
    }
    .anv-in { position: relative; z-index: 1; text-align: center; }
    .anv-ghost {
      font-family: var(--f-display);
      font-size: clamp(5rem,22vw,14rem); font-weight: 700; line-height: 0.9;
      color: transparent; -webkit-text-stroke: 1px rgba(255,255,255,0.1);
      user-select: none; pointer-events: none; margin-bottom: -32px;
    }
    .anv-div { display: flex; align-items: center; justify-content: center; gap: 14px; margin-bottom: 20px; }
    .anv-ln-l { flex: 1; max-width: 72px; height: 1px; background: linear-gradient(to right, transparent, var(--c-gold)); }
    .anv-ln-r { flex: 1; max-width: 72px; height: 1px; background: linear-gradient(to left,  transparent, var(--c-gold)); }
    .anv-tag  { font-size: 0.68rem; font-weight: 700; letter-spacing: 0.22em; color: var(--c-gold); }
    .anv-head {
      font-family: var(--f-serif);
      font-size: clamp(1.3rem,4.5vw,2.4rem); font-weight: 700; line-height: 1.6; margin-bottom: 24px;
    }
    .anv-head .hl { color: var(--c-main); }
    .anv-sub {
      font-size: clamp(0.82rem,2vw,0.94rem); color: rgba(255,255,255,0.72);
      max-width: 600px; margin: 0 auto 52px; line-height: 2;
    }
    .anv-cards { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; text-align: left; }
    .anv-card {
      background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1);
      border-radius: var(--r-lg); padding: 32px 24px;
      transition: background 0.3s, transform 0.3s;
    }
    .anv-card:hover { background: rgba(255,255,255,0.09); transform: translateY(-4px); }
    .anv-ic {
      width: 48px; height: 48px; background: var(--c-main-a12); border-radius: 50%;
      display: flex; align-items: center; justify-content: center; margin-bottom: 16px;
    }
    .anv-ic svg { width: 24px; height: 24px; color: var(--c-main); }
    .anv-card h3 { font-family: var(--f-serif); font-size: 1rem; font-weight: 700; margin-bottom: 10px; }
    .anv-card p  { font-size: 0.8rem; color: rgba(255,255,255,0.62); line-height: 1.85; }

    /* ============================================================
       4. タイムライン
       ============================================================ */
    #c10-tl { padding: var(--py) 0; background: var(--c-light); }
    .tl-head { text-align: center; margin-bottom: 60px; }
    .tl-wrap { position: relative; max-width: 760px; margin: 0 auto; }
    .tl-wrap::before {
      content: ''; position: absolute; left: 50%; top: 0; bottom: 0; width: 2px;
      background: linear-gradient(to bottom, var(--c-main), var(--c-accent));
      transform: translateX(-50%);
    }
    /* ◆編集箇所：タイムラインアイテムの追加・変更はここで */
    .tl-item { display: grid; grid-template-columns: 1fr 44px 1fr; gap: 0 20px; margin-bottom: 44px; align-items: center; }
    .tl-item:last-child { margin-bottom: 0; }
    .tl-item:nth-child(odd)  .tl-card { grid-column: 1; text-align: right; }
    .tl-item:nth-child(odd)  .tl-dot  { grid-column: 2; }
    .tl-item:nth-child(odd)  .tl-yr   { grid-column: 3; text-align: left; }
    .tl-item:nth-child(even) .tl-yr   { grid-column: 1; text-align: right; order: 1; }
    .tl-item:nth-child(even) .tl-dot  { grid-column: 2; order: 2; }
    .tl-item:nth-child(even) .tl-card { grid-column: 3; text-align: left; order: 3; }
    .tl-dot {
      width: 44px; height: 44px; background: #fff; border: 3px solid var(--c-main);
      border-radius: 50%; display: flex; align-items: center; justify-content: center;
      position: relative; z-index: 1; margin: 0 auto; flex-shrink: 0; transition: background 0.25s;
    }
    .tl-dot svg { width: 18px; height: 18px; color: var(--c-main); transition: color 0.25s; }
    .tl-item:hover .tl-dot { background: var(--c-main); }
    .tl-item:hover .tl-dot svg { color: #fff; }
    .tl-yr { font-family: var(--f-display); font-size: clamp(1.6rem,4vw,2rem); font-weight: 700; color: var(--c-main); line-height: 1; }
    .tl-card { background: #fff; border-radius: var(--r-md); padding: 18px 20px; box-shadow: var(--sh-sm); transition: box-shadow 0.25s; }
    .tl-item:hover .tl-card { box-shadow: var(--sh-md); }
    .tl-tag { display: inline-block; font-size: 0.65rem; font-weight: 700; padding: 2px 8px; border-radius: 20px; margin-bottom: 6px; }
    .tl-tag.edu { background: var(--c-main-a12); color: var(--c-main); }
    .tl-tag.res { background: rgba(0,91,172,0.1); color: var(--c-accent); }
    .tl-tag.cam { background: rgba(51,51,51,0.08); color: var(--c-dark); }
    .tl-tag.com { background: rgba(40,160,80,0.1); color: #1a8a44; }
    .tl-tag.ann { background: rgba(250,130,0,0.18); color: var(--c-main-dark); }
    .tl-card h3 { font-family: var(--f-serif); font-size: 0.9rem; font-weight: 700; margin-bottom: 4px; line-height: 1.4; }
    .tl-card p  { font-size: 0.78rem; color: var(--c-mid); line-height: 1.75; }
    .tl-item.hl .tl-card { border: 2px solid var(--c-main); }
    .tl-item.hl .tl-dot  { background: var(--c-main); border-color: var(--c-main); }
    .tl-item.hl .tl-dot svg { color: #fff; }

    /* ============================================================
       5. 数字で見る10年
       ============================================================ */
    #c10-num { padding: var(--py) 0; background: #fff; }
    .num-head { text-align: center; margin-bottom: 52px; }
    /* ◆編集箇所：data-count と表示テキストを変更 */
    .num-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
    .num-card {
      border: 1px solid rgba(0,0,0,0.07); border-radius: var(--r-lg);
      padding: 36px 24px; text-align: center; position: relative; overflow: hidden;
      transition: transform 0.3s, box-shadow 0.3s;
    }
    .num-card::before {
      content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
      background: linear-gradient(to right, var(--c-main), var(--c-accent));
    }
    .num-card:hover { transform: translateY(-5px); box-shadow: var(--sh-lg); }
    .num-ic {
      width: 44px; height: 44px; background: var(--c-main-a12); border-radius: 50%;
      display: flex; align-items: center; justify-content: center; margin: 0 auto 12px;
    }
    .num-ic svg { width: 22px; height: 22px; color: var(--c-main); }
    .num-val {
      display: flex; align-items: baseline; justify-content: center; gap: 2px;
      font-family: var(--f-display); font-size: clamp(2rem,5.5vw,3rem);
      font-weight: 700; color: var(--c-main); line-height: 1; margin-bottom: 6px;
    }
    .num-unit { font-family: var(--f-sans); font-size: 0.95rem; font-weight: 500; color: var(--c-mid); }
    .num-lbl  { font-size: 0.8rem; color: var(--c-mid); }
    .num-note { font-size: 0.68rem; color: #aaa; margin-top: 3px; }

    /* ============================================================
       6. 教育
       ============================================================ */
    #c10-edu { padding: var(--py) 0; background: var(--c-light); }
    .edu-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 24px; }
    .edu-card {
      background: #fff; border-radius: var(--r-lg); padding: 36px 28px;
      box-shadow: var(--sh-sm); display: flex; gap: 20px; align-items: flex-start;
      transition: transform 0.3s, box-shadow 0.3s;
    }
    .edu-card:hover { transform: translateY(-4px); box-shadow: var(--sh-md); }
    .edu-num { font-family: var(--f-display); font-size: 2.2rem; font-weight: 700; color: var(--c-main); opacity: 0.28; line-height: 1; flex-shrink: 0; min-width: 44px; }
    .edu-body h3 { font-family: var(--f-serif); font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
    .edu-body p  { font-size: 0.82rem; color: var(--c-mid); line-height: 1.85; }
    .edu-tags { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 12px; }
    .edu-tag  { font-size: 0.67rem; font-weight: 700; padding: 2px 10px; border-radius: 20px; background: var(--c-main-a12); color: var(--c-main); }

    /* ============================================================
       7. 研究
       ============================================================ */
    #c10-res { padding: var(--py) 0; background: #fff; }
    .res-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
    .res-card { border-radius: var(--r-lg); overflow: hidden; box-shadow: var(--sh-sm); transition: transform 0.3s, box-shadow 0.3s; }
    .res-card:hover { transform: translateY(-5px); box-shadow: var(--sh-lg); }
    .res-hd { padding: 26px 22px; color: #fff; }
    .res-card:nth-child(1) .res-hd { background: linear-gradient(135deg, var(--c-accent), #003d7a); }
    .res-card:nth-child(2) .res-hd { background: linear-gradient(135deg, var(--c-main), var(--c-main-dark)); }
    .res-card:nth-child(3) .res-hd { background: linear-gradient(135deg, #2d6a4f, #1b4332); }
    .res-hd h3 { font-family: var(--f-serif); font-size: 0.95rem; font-weight: 700; line-height: 1.45; }
    .res-bd { padding: 20px 22px; background: #fff; }
    .res-bd p { font-size: 0.8rem; color: var(--c-mid); line-height: 1.85; }

    /* ============================================================
       8. 地域貢献
       ============================================================ */
    #c10-com { padding: var(--py) 0; background: var(--c-light); }
    .com-lay { display: grid; grid-template-columns: 1fr 1fr; gap: 52px; align-items: center; }
    .com-vis-main {
      background: linear-gradient(135deg, var(--c-accent), #003d7a);
      border-radius: var(--r-lg); aspect-ratio: 4/3;
      display: flex; align-items: center; justify-content: center;
      padding: 24px; color: rgba(255,255,255,0.45); font-size: 0.82rem; text-align: center;
    }
    .com-vis { position: relative; }
    .com-float {
      position: absolute; bottom: -16px; right: -16px;
      background: var(--c-main); border-radius: var(--r-md);
      padding: 18px 22px; color: #fff; box-shadow: var(--sh-md);
    }
    .com-float-n { font-family: var(--f-display); font-size: 2rem; font-weight: 700; line-height: 1; }
    .com-float-l { font-size: 0.72rem; opacity: 0.9; margin-top: 3px; }
    .com-list li { display: flex; gap: 14px; padding: 18px 0; border-bottom: 1px solid rgba(0,0,0,0.07); align-items: flex-start; }
    .com-list li:last-child { border-bottom: none; }
    .com-ic { width: 38px; height: 38px; flex-shrink: 0; background: var(--c-main-a12); border-radius: 4px; display: flex; align-items: center; justify-content: center; }
    .com-ic svg { width: 18px; height: 18px; color: var(--c-main); }
    .com-lb h4 { font-family: var(--f-serif); font-size: 0.9rem; font-weight: 700; margin-bottom: 3px; }
    .com-lb p  { font-size: 0.8rem; color: var(--c-mid); line-height: 1.75; }

    /* ============================================================
       9. 学生の活躍
       ============================================================ */
    #c10-stu { padding: var(--py) 0; background: #fff; }
    .stu-head { text-align: center; margin-bottom: 52px; }
    .stu-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 18px; }
    .stu-card {
      border: 1px solid rgba(0,0,0,0.07); border-radius: var(--r-lg); padding: 28px 18px; text-align: center;
      transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
    }
    .stu-card:hover { transform: translateY(-4px); border-color: var(--c-main); box-shadow: 0 8px 24px rgba(250,130,0,0.12); }
    .stu-ic {
      width: 52px; height: 52px;
      background: linear-gradient(135deg, var(--c-main), var(--c-main-dark));
      border-radius: 50%; margin: 0 auto 14px;
      display: flex; align-items: center; justify-content: center;
    }
    .stu-ic svg { width: 26px; height: 26px; color: #fff; }
    .stu-card h3 { font-family: var(--f-serif); font-size: 0.88rem; font-weight: 700; margin-bottom: 7px; }
    .stu-card p  { font-size: 0.77rem; color: var(--c-mid); line-height: 1.75; }

    /* ============================================================
       10. フォトギャラリー
       ============================================================ */
    #c10-gal { padding: var(--py) 0; background: var(--c-dark); }
    .gal-head { text-align: center; margin-bottom: 44px; }
    .gal-head .sec-label { color: var(--c-gold); }
    .gal-head .sec-label::before { background: var(--c-gold); }
    .gal-head .sec-title { color: #fff; }
    /* ◆編集箇所：各 .gal-bg に style="background-image:url('写真パス')" を設定 */
    .gal-grid { display: grid; grid-template-columns: repeat(4,1fr); grid-auto-rows: 180px; gap: 6px; }
    .gal-item { background: #1a2a3a; border-radius: 4px; overflow: hidden; position: relative; cursor: pointer; }
    .gal-item:nth-child(1) { grid-column: span 2; grid-row: span 2; }
    .gal-item:nth-child(4) { grid-column: span 2; }
    .gal-bg {
      width: 100%; height: 100%; display: flex; align-items: center; justify-content: center;
      color: rgba(255,255,255,0.2); font-size: 0.72rem; text-align: center; padding: 12px;
      background-size: cover; background-position: center;
    }
    .gal-ov {
      position: absolute; inset: 0; background: transparent; transition: background 0.3s;
      display: flex; align-items: center; justify-content: center;
    }
    .gal-item:hover .gal-ov { background: rgba(250,130,0,0.28); }
    .gal-ov svg { width: 28px; height: 28px; color: #fff; opacity: 0; transition: opacity 0.3s; }
    .gal-item:hover .gal-ov svg { opacity: 1; }

    /* ============================================================
       11. 記念動画
       ============================================================ */
    #c10-vid { padding: var(--py) 0; background: #fff; }
    .vid-head { text-align: center; margin-bottom: 44px; }
    .vid-wrap { max-width: 800px; margin: 0 auto; border-radius: var(--r-lg); overflow: hidden; box-shadow: var(--sh-lg); }
    /* ◆編集箇所：YouTubeのURLを設定してください */
    .vid-ratio { position: relative; padding-top: 56.25%; background: #0a0a14; }
    .vid-ratio iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: none; }
    .vid-ph {
      position: absolute; inset: 0; display: flex; flex-direction: column;
      align-items: center; justify-content: center; gap: 14px;
      color: rgba(255,255,255,0.45); font-size: 0.82rem; text-align: center;
    }
    .vid-play { width: 64px; height: 64px; background: var(--c-main); border-radius: 50%; display: flex; align-items: center; justify-content: center; }
    .vid-play svg { width: 28px; height: 28px; color: #fff; margin-left: 4px; }

    /* ============================================================
       12. 未来へ
       ============================================================ */
    #c10-fut {
      padding: var(--py) 0; color: #fff; text-align: center; position: relative; overflow: hidden;
      background: linear-gradient(155deg, var(--c-accent) 0%, #003d7a 50%, #1a1a2e 100%);
    }
    .fut-ring { position: absolute; border-radius: 50%; pointer-events: none; }
    .fut-ring-1 { width: min(550px,90vw); height: min(550px,90vw); border: 1px solid rgba(255,255,255,0.06); top: 50%; left: 50%; transform: translate(-50%,-50%); }
    .fut-ring-2 { width: min(850px,140vw); height: min(850px,140vw); border: 1px solid rgba(255,255,255,0.03); top: 50%; left: 50%; transform: translate(-50%,-50%); }
    .fut-in { position: relative; z-index: 1; }
    .fut-lbl { display: inline-flex; align-items: center; gap: 10px; font-size: 0.68rem; letter-spacing: 0.22em; font-weight: 700; color: var(--c-gold); margin-bottom: 18px; }
    .fut-lbl::before,.fut-lbl::after { content: ''; width: 22px; height: 1px; background: var(--c-gold); }
    .fut-head { font-family: var(--f-serif); font-size: clamp(1.7rem,5.5vw,3.2rem); font-weight: 700; line-height: 1.5; margin-bottom: 24px; }
    .fut-sub { font-size: clamp(0.82rem,2vw,0.96rem); color: rgba(255,255,255,0.75); max-width: 640px; margin: 0 auto 44px; line-height: 2.1; }
    .fut-pills { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; margin-bottom: 48px; }
    .fut-pill { background: rgba(255,255,255,0.09); border: 1px solid rgba(255,255,255,0.18); border-radius: 40px; padding: 9px 22px; font-size: 0.83rem; font-weight: 500; }
    .fut-btns { display: flex; justify-content: center; flex-wrap: wrap; gap: 14px; }
    .btn-pri {
      display: inline-flex; align-items: center; gap: 9px;
      background: var(--c-main); color: #fff; font-weight: 700;
      padding: 13px 30px; border-radius: 50px; font-size: 0.87rem; letter-spacing: 0.06em;
      box-shadow: 0 4px 18px rgba(250,130,0,0.45);
      transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
    }
    .btn-pri:hover { background: var(--c-main-dark); transform: translateY(-2px); }
    .btn-pri svg { width: 14px; height: 14px; }
    .btn-out {
      display: inline-flex; align-items: center; gap: 9px;
      background: transparent; color: #fff; font-weight: 700;
      padding: 12px 30px; border-radius: 50px; font-size: 0.87rem;
      border: 2px solid rgba(255,255,255,0.38); transition: background 0.2s, transform 0.2s;
    }
    .btn-out:hover { background: rgba(255,255,255,0.1); transform: translateY(-2px); }

    /* ============================================================
       13. SNS
       ============================================================ */
    #c10-sns { padding: 60px 0; background: var(--c-light); }
    .sns-in { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 28px; }
    .sns-txt h2 { font-family: var(--f-serif); font-size: 1.1rem; font-weight: 700; margin-bottom: 5px; }
    .sns-txt p  { font-size: 0.82rem; color: var(--c-mid); }
    .sns-links { display: flex; flex-wrap: wrap; gap: 10px; }
    /* ◆編集箇所：各 href に公式URLを設定 */
    .sns-btn {
      display: inline-flex; align-items: center; gap: 7px;
      padding: 9px 18px; border-radius: 7px; font-size: 0.78rem; font-weight: 700;
      transition: transform 0.2s, box-shadow 0.2s;
    }
    .sns-btn:hover { transform: translateY(-2px); box-shadow: var(--sh-sm); }
    .sns-btn svg { width: 16px; height: 16px; }
    .sns-btn.web { background: var(--c-main); color: #fff; }
    .sns-btn.xt  { background: #000; color: #fff; }
    .sns-btn.yt  { background: #FF0000; color: #fff; }
    .sns-btn.fb  { background: #1877F2; color: #fff; }

    /* ============================================================
       フッター
       ============================================================ */
    #c10-ftr { background: var(--c-dark); color: rgba(255,255,255,0.65); padding: 56px 0 28px; }
    .ftr-in { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 44px; margin-bottom: 36px; }
    .ftr-logo { font-family: var(--f-serif); font-size: 1rem; color: #fff; font-weight: 700; line-height: 1.4; margin-bottom: 10px; }
    .ftr-brand p { font-size: 0.77rem; line-height: 1.9; }
    .ftr-brand address { font-size: 0.77rem; margin-top: 14px; line-height: 1.9; }
    .ftr-col h4 { color: #fff; font-size: 0.8rem; font-weight: 700; margin-bottom: 14px; letter-spacing: 0.07em; }
    .ftr-col li { margin-bottom: 7px; }
    .ftr-col a { font-size: 0.77rem; color: rgba(255,255,255,0.58); transition: color 0.2s; }
    .ftr-col a:hover { color: var(--c-main); }
    .ftr-hr { border: none; border-top: 1px solid rgba(255,255,255,0.08); margin-bottom: 22px; }
    .ftr-btm { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
    .ftr-btm p { font-size: 0.7rem; }
    .ftr-badge { background: rgba(250,130,0,0.15); border: 1px solid rgba(250,130,0,0.25); color: var(--c-main); font-size: 0.7rem; font-weight: 700; padding: 3px 14px; border-radius: 20px; }

    /* ページトップ */
    #c10-top {
      position: fixed; bottom: 24px; right: 20px;
      width: 46px; height: 46px; background: var(--c-main); color: #fff;
      border: none; cursor: pointer; border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      box-shadow: var(--sh-md); opacity: 0; visibility: hidden;
      transition: opacity 0.3s, visibility 0.3s, transform 0.2s; z-index: 9990;
    }
    #c10-top.show { opacity: 1; visibility: visible; }
    #c10-top:hover { transform: translateY(-3px); }
    #c10-top svg { width: 20px; height: 20px; }

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

    /* ============================================================
       レスポンシブ — タブレット（960px以下）
       ============================================================ */
    @media (max-width: 960px) {
      :root { --py: 72px; }
      .hdr-nav { display: none; }
      .hbg { display: flex; }
      .msg-grid { grid-template-columns: 1fr; }
      .msg-photo-col { position: static; max-width: 220px; margin: 0 auto; }
      .anv-cards { grid-template-columns: 1fr; }
      .num-grid  { grid-template-columns: repeat(2,1fr); }
      .edu-grid  { grid-template-columns: 1fr; }
      .res-grid  { grid-template-columns: 1fr; }
      .com-lay   { grid-template-columns: 1fr; }
      .com-vis   { max-width: 460px; }
      .stu-grid  { grid-template-columns: repeat(2,1fr); }
      .gal-grid  { grid-template-columns: repeat(2,1fr); grid-auto-rows: 150px; }
      .gal-item:nth-child(1) { grid-column: span 1; grid-row: span 1; }
      .gal-item:nth-child(4) { grid-column: span 1; }
      .ftr-in    { grid-template-columns: 1fr 1fr; }
      .ftr-brand { grid-column: span 2; }
      .sns-in    { flex-direction: column; align-items: flex-start; }
    }

    /* ============================================================
       レスポンシブ — スマートフォン（640px以下）
       ============================================================ */
    @media (max-width: 640px) {
      :root { --py: 52px; --hh: 56px; }
      .hdr-badge { font-size: 0.52rem; padding: 2px 6px; }
      .hdr-name  { font-size: 0.65rem; }
      .hero-inner { padding: 48px 16px 88px; }
      .hero-pill  { font-size: 0.65rem; padding: 5px 14px; }
      .hero-btn   { padding: 13px 26px; font-size: 0.85rem; }
      .msg-photo-col { max-width: 180px; }
      /* タイムライン：スマホは全左寄せ1カラム */
      .tl-wrap::before { left: 18px; }
      .tl-item {
        display: grid;
        grid-template-columns: 36px 1fr;
        grid-template-rows: auto auto;
        gap: 0 12px;
      }
      .tl-item:nth-child(odd)  .tl-card,
      .tl-item:nth-child(even) .tl-card { grid-column: 2; grid-row: 2; text-align: left; order: 3; }
      .tl-item:nth-child(odd)  .tl-dot,
      .tl-item:nth-child(even) .tl-dot  { grid-column: 1; grid-row: 1; order: 1; margin: 0; width: 32px; height: 32px; }
      .tl-item:nth-child(odd)  .tl-yr,
      .tl-item:nth-child(even) .tl-yr   { grid-column: 2; grid-row: 1; text-align: left; order: 2; font-size: 1.3rem; align-self: center; }
      .tl-dot svg { width: 14px; height: 14px; }
      .num-grid  { grid-template-columns: 1fr 1fr; gap: 12px; }
      .num-card  { padding: 24px 16px; }
      .stu-grid  { grid-template-columns: 1fr 1fr; gap: 12px; }
      .stu-card  { padding: 22px 14px; }
      .gal-grid  { grid-template-columns: repeat(2,1fr); grid-auto-rows: 120px; }
      .fut-pills { gap: 8px; }
      .fut-pill  { font-size: 0.78rem; padding: 7px 16px; }
      .fut-btns  { flex-direction: column; align-items: center; }
      .btn-pri,.btn-out { width: 100%; max-width: 280px; justify-content: center; }
      .sns-links { gap: 8px; }
      .sns-btn   { padding: 8px 14px; font-size: 0.75rem; }
      .ftr-in    { grid-template-columns: 1fr; }
      .ftr-brand { grid-column: span 1; }
      .ftr-btm   { flex-direction: column; text-align: center; }
    }

    /* 375px以下 */
    @media (max-width: 375px) {
      .num-grid { grid-template-columns: 1fr; }
      .stu-grid { grid-template-columns: 1fr; }
      .edu-card { flex-direction: column; gap: 8px; }
    }