:root {
    --ink:      #1C1C1C;
    --ink-soft: #3D3D3D;
    --gray:     #888888;
    --gray-lt:  #BBBBBB;
    --paper:    #FAFAF7;
    --warm:     #F3EDE2;
    --line:     #E0DAD0;
    --water:    #EAF0F5;
    --accent:   #2C3E6B;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Apple SD Gothic Neo','Noto Serif KR','Noto Sans KR','Malgun Gothic',serif;
    background: var(--paper);
    color: var(--ink);
    line-height: 1.8;
}

/* ══ 공통 유틸 ══ */
.inner { max-width: 960px; margin: 0 auto; padding: 0 28px; }

.section-tag {
    font-family: 'Georgia', serif;
    font-size: .75em; letter-spacing: 3px; text-transform: uppercase;
    color: var(--gray); margin-bottom: 14px;
}

.brush-title {
    font-size: clamp(2em, 5vw, 3em);
    font-weight: 900; line-height: 1.25;
    color: var(--ink); margin-bottom: 16px;
    letter-spacing: -1px;
}

.body-text {
    color: var(--ink-soft); font-size: 1em;
    line-height: 2; max-width: 560px;
}

/* 수평선 장식 (물결) */
.water-line {
    display: flex; align-items: center; gap: 12px;
    margin-bottom: 18px;
}
.water-line::before, .water-line::after {
    content:''; flex:1; height:1px; background: var(--line);
}
.water-line span {
    font-size: .7em; color: var(--gray-lt); letter-spacing:3px;
}

hr.divider {
    border: none; border-top: 1px solid var(--line);
    margin: 0;
}

/* fade-in 애니 */
.reveal { opacity:0; transform:translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.on { opacity:1; transform:none; }

/* ══ 네비게이션 ══ */
nav {
    position: fixed; top:0; left:0; right:0; z-index:200;
    background: rgba(250,250,247,.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
    height: 60px;
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 28px;
}
.nav-brand {
    font-size: 1em; font-weight: 900; color: var(--ink);
    letter-spacing: -0.5px; text-decoration:none;
}
.nav-brand small { font-weight:400; color: var(--gray); font-size:.82em; margin-left:8px; }
.nav-menu { display:flex; gap:24px; list-style:none; }
.nav-menu a {
    font-size:.88em; color: var(--ink-soft); text-decoration:none;
    padding-bottom: 2px;
    border-bottom: 1.5px solid transparent;
    transition: border-color .2s;
}
.nav-menu a:hover { border-bottom-color: var(--ink); }
.nav-btn {
    font-size:.85em; font-weight:700;
    background: var(--ink); color: var(--paper);
    border:none; border-radius:4px;
    padding: 8px 18px; cursor:pointer;
    transition: opacity .2s;
}
.nav-btn:hover { opacity:.75; }
.hamburger { display:none; flex-direction:column; gap:5px; cursor:pointer; background:none; border:none; }
.hamburger span { display:block; width:22px; height:1.5px; background:var(--ink); }

/* ══ 히어로 ══ */
.hero {
    min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
    text-align: center;
    padding: 100px 28px 80px;
    background: var(--paper);
    position: relative; overflow: hidden;
}

.hero::after {
    content:'';
    position:absolute; bottom:0; left:0; right:0; height:180px;
    background: linear-gradient(to top, var(--water), transparent);
    pointer-events:none;
}

.hero-inner { position:relative; z-index:1; max-width:680px; }

.hero-boat {
    margin: 0 auto 32px;
    width: 260px; opacity:.85;
}

.hero-title {
    font-size: clamp(3em, 9vw, 5.5em);
    font-weight: 900; line-height: 1.1;
    color: var(--ink); letter-spacing: -2px;
    margin-bottom: 24px;
    text-shadow: 2px 2px 0 rgba(0,0,0,.04);
}

.hero-quote {
    font-size: clamp(.95em, 2.5vw, 1.1em);
    color: var(--ink-soft); font-style: italic;
    line-height: 1.9; margin-bottom: 40px;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    padding: 20px 0;
}
.hero-quote cite { display:block; font-size:.82em; color:var(--gray); margin-top:8px; font-style:normal; }

.hero-btns { display:flex; gap:14px; justify-content:center; flex-wrap:wrap; }
.btn-ink {
    background: var(--ink); color: var(--paper);
    border: none; border-radius:4px;
    padding: 13px 28px; font-size:.95em; font-weight:700;
    cursor:pointer; text-decoration:none; display:inline-block;
    transition: opacity .2s;
}
.btn-ink:hover { opacity:.75; }
.btn-line {
    background: transparent; color: var(--ink);
    border: 1.5px solid var(--ink); border-radius:4px;
    padding: 12px 26px; font-size:.95em; font-weight:600;
    cursor:pointer; text-decoration:none; display:inline-block;
    transition: background .2s, color .2s;
}
.btn-line:hover { background: var(--ink); color: var(--paper); }

/* ══ 소개 섹션 ══ */
.intro { padding: 96px 0; background: var(--paper); }
.intro-grid {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 64px; align-items: start;
}
.intro-photo {
    aspect-ratio: 3/4;
    background: var(--warm);
    border: 1px solid var(--line);
    border-radius: 4px;
    display:flex; flex-direction:column;
    align-items:center; justify-content:center;
    color:var(--gray-lt); font-size:.82em; text-align:center; gap:8px;
}
.intro-photo svg { opacity:.3; }
.intro-name {
    font-size: 1.8em; font-weight:900;
    letter-spacing:-1px; margin-bottom:6px;
}
.intro-role {
    font-size:.88em; color:var(--gray);
    border-left:2px solid var(--line); padding-left:12px;
    margin-bottom:24px; line-height:1.7;
}
.intro-bio { color:var(--ink-soft); line-height:2; margin-bottom:28px; }
.link-chips { display:flex; flex-wrap:wrap; gap:10px; }
.chip {
    font-size:.82em; color:var(--ink-soft);
    border:1px solid var(--line); border-radius:3px;
    padding:5px 13px; text-decoration:none;
    transition: border-color .2s, color .2s;
}
.chip:hover { border-color:var(--ink); color:var(--ink); }

/* ══ 강의 ══ */
.lectures { padding: 96px 0; background: var(--warm); }
.lec-grid {
    display:grid;
    grid-template-columns: repeat(auto-fill, minmax(270px,1fr));
    gap:2px; margin-top:40px;
    border:1px solid var(--line);
}
.lec-card {
    background:var(--paper);
    padding:28px 24px;
    border:1px solid var(--line);
    cursor:pointer;
    text-decoration:none; color:inherit;
    display:block;
    transition: background .2s;
    position:relative;
}
.lec-card:hover { background: var(--water); }
.lec-card:hover .lec-arrow { opacity:1; transform:translateX(0); }
.lec-num {
    font-family:'Georgia',serif; font-size:.78em;
    color:var(--gray-lt); margin-bottom:10px;
}
.lec-cat {
    font-size:.75em; font-weight:700; letter-spacing:1.5px;
    color:var(--gray); text-transform:uppercase; margin-bottom:8px;
}
.lec-title {
    font-size:.97em; font-weight:700;
    line-height:1.6; color:var(--ink); margin-bottom:10px;
}
.lec-sub { font-size:.8em; color:var(--gray); }
.lec-arrow {
    position:absolute; right:20px; bottom:22px;
    font-size:.85em; color:var(--gray);
    opacity:0; transform:translateX(-6px);
    transition: opacity .2s, transform .2s;
}

/* ══ 칼럼 ══ */
.columns { padding: 96px 0; background: var(--paper); }
.col-list { display:flex; flex-direction:column; margin-top:40px; }
.col-item {
    display:grid; grid-template-columns:72px 1fr;
    gap:28px; align-items:start;
    padding:28px 0;
    border-bottom:1px solid var(--line);
    text-decoration:none; color:inherit;
}
.col-item:first-child { border-top:1px solid var(--line); }
.col-item:hover .col-title { text-decoration:underline; text-decoration-color:var(--line); }
.col-date {
    font-family:'Georgia',serif;
    text-align:center;
    color:var(--gray);
}
.col-date .day { font-size:1.6em; font-weight:700; color:var(--ink); display:block; line-height:1; }
.col-date .month { font-size:.75em; letter-spacing:1px; }
.col-title { font-size:1em; font-weight:700; line-height:1.6; margin-bottom:6px; }
.col-preview { font-size:.88em; color:var(--gray); line-height:1.8; }
.col-sns { display:flex; gap:10px; margin-top:32px; }

/* ══ 도서 ══ */
.book { padding: 96px 0; background: var(--ink); color: var(--paper); }
.book-grid {
    display:grid;
    grid-template-columns:220px 1fr;
    gap:64px; align-items:center;
}
.book-cover-wrap {
    background: var(--paper);
    padding: 0;
    position: relative;
    border-radius: 2px 4px 4px 2px;
    box-shadow:
        -4px 0 6px rgba(0,0,0,.4),
        -8px 4px 12px rgba(0,0,0,.35),
        6px 6px 20px rgba(0,0,0,.5),
        18px 16px 45px rgba(0,0,0,.45),
        0 0 0 1px rgba(0,0,0,.15);
    transform: perspective(800px) rotateY(3deg);
    transform-origin: left center;
    transition: transform .3s ease, box-shadow .3s ease;
}
.book-cover-wrap:hover {
    transform: perspective(800px) rotateY(1deg) translateX(4px);
    box-shadow:
        -4px 0 6px rgba(0,0,0,.4),
        -10px 4px 16px rgba(0,0,0,.4),
        10px 10px 30px rgba(0,0,0,.55),
        24px 20px 55px rgba(0,0,0,.5),
        0 0 0 1px rgba(0,0,0,.15);
}
.book-cover-wrap::before {
    content: '';
    position: absolute;
    top: 0; left: 0; bottom: 0;
    width: 10px;
    background: linear-gradient(to right, #c8c0b0, #e8e0d0);
    border-radius: 2px 0 0 2px;
    z-index: 1;
}
.book-cover-title-kr {
    font-size:1.4em; font-weight:900;
    color:var(--ink); line-height:1.3; margin-bottom:6px;
}
.book-cover-author-kr {
    font-size:.78em; color:var(--gray);
    margin-bottom:16px;
}
.book-cover-img {
    width:100%; aspect-ratio:3/4;
    background:linear-gradient(160deg,#F5F0E8,#E8E0D0);
    display:flex; align-items:center; justify-content:center;
    color:#ccc; font-size:.78em; margin-bottom:12px;
}
.book-cover-quote-kr {
    font-size:.72em; color:var(--gray); font-style:italic; line-height:1.6;
}
.book-info .section-tag { color:rgba(255,255,255,.4); }
.book-title-lrg { font-size:2.2em; font-weight:900; line-height:1.2; margin-bottom:20px; }
.book-desc { color:rgba(255,255,255,.65); line-height:2; margin-bottom:32px; font-size:.97em; }
.book-highlights { display:flex; flex-direction:column; gap:18px; margin-bottom:36px; }
.bhl { display:flex; gap:16px; align-items:flex-start; }
.bhl-dot {
    width:6px; height:6px; min-width:6px;
    background:rgba(255,255,255,.35); border-radius:50%; margin-top:9px;
}
.bhl-text { color:rgba(255,255,255,.65); font-size:.93em; line-height:1.8; }
.bhl-text strong { color:white; }
.book-btns { display:flex; gap:12px; flex-wrap:wrap; }
.btn-paper {
    background:var(--paper); color:var(--ink);
    border:none; border-radius:4px;
    padding:13px 24px; font-size:.93em; font-weight:700;
    cursor:pointer; text-decoration:none; display:inline-block;
    transition: opacity .2s;
}
.btn-paper:hover { opacity:.8; }
.btn-paper-line {
    background:transparent; color:rgba(255,255,255,.7);
    border:1px solid rgba(255,255,255,.25); border-radius:4px;
    padding:12px 22px; font-size:.93em; font-weight:600;
    cursor:pointer; text-decoration:none; display:inline-block;
    transition: border-color .2s, color .2s;
}
.btn-paper-line:hover { border-color:rgba(255,255,255,.7); color:white; }

/* ══ Q&A 게시판 ══ */
.qa { padding: 96px 0; background: var(--warm); }

.board-top {
    display:flex; justify-content:space-between; align-items:flex-end;
    margin-bottom:28px; flex-wrap:wrap; gap:16px;
}
.board-count { font-size:.88em; color:var(--gray); }
.board-write-btn {
    background:var(--ink); color:var(--paper);
    border:none; border-radius:3px;
    padding:10px 22px; font-size:.88em; font-weight:700;
    cursor:pointer; font-family:inherit; transition:opacity .2s;
}
.board-write-btn:hover { opacity:.75; }

.board-form {
    background:var(--paper);
    border:1px solid var(--line);
    border-radius:4px;
    padding:28px;
    margin-bottom:24px;
    display:none;
}
.board-form.open { display:block; }
.board-form h3 { font-size:1em; font-weight:700; margin-bottom:18px; }
.form-row { display:flex; gap:12px; margin-bottom:12px; flex-wrap:wrap; }
.form-row input, .form-row textarea, .form-field {
    width:100%;
    background:var(--warm); border:1px solid var(--line);
    border-radius:3px; padding:11px 14px;
    font-size:.9em; color:var(--ink);
    font-family:inherit; outline:none;
    transition:border-color .2s;
}
.form-row input:focus, .form-row textarea:focus, .form-field:focus { border-color:var(--ink); }
.form-row input { flex:1; min-width:140px; }
.form-row textarea { resize:vertical; min-height:100px; }
.form-bottom {
    display:flex; justify-content:space-between;
    align-items:center; margin-top:14px; flex-wrap:wrap; gap:12px;
}
.lock-toggle {
    display:flex; align-items:center; gap:8px;
    font-size:.88em; color:var(--ink-soft); cursor:pointer;
    user-select:none;
}
.lock-toggle input[type=checkbox] { width:16px; height:16px; cursor:pointer; accent-color:var(--ink); }
.lock-hint { font-size:.78em; color:var(--gray); margin-top:4px; }
.form-submit {
    background:var(--ink); color:var(--paper);
    border:none; border-radius:3px;
    padding:11px 28px; font-size:.9em; font-weight:700;
    cursor:pointer; font-family:inherit; transition:opacity .2s;
}
.form-submit:hover { opacity:.75; }
.form-cancel {
    background:none; border:1px solid var(--line);
    border-radius:3px; padding:10px 20px;
    font-size:.88em; color:var(--gray);
    cursor:pointer; font-family:inherit; transition:border-color .2s;
}
.form-cancel:hover { border-color:var(--ink); color:var(--ink); }

.board-table-head {
    display:grid;
    grid-template-columns: 52px 1fr 80px;
    gap:0; padding:10px 16px;
    background:var(--ink); color:var(--paper);
    font-size:.8em; font-weight:700; letter-spacing:.5px;
    border-radius:3px 3px 0 0;
}
.board-table-head span { text-align:center; }
.board-table-head span:nth-child(2) { text-align:left; padding-left:4px; }

.board-item {
    border-bottom:1px solid var(--line);
    background:var(--paper);
    cursor:pointer;
    transition:background .15s;
}
.board-item:hover { background:#F5F0E5; }
.board-item-row {
    display:grid;
    grid-template-columns: 52px 1fr 80px;
    gap:0; padding:14px 16px;
    align-items:center;
}
.bi-num { font-size:.82em; color:var(--gray-lt); text-align:center; }
.bi-title {
    font-size:.95em; font-weight:600; color:var(--ink);
    display:flex; align-items:center; gap:8px;
    padding-left:4px;
}
.bi-title .private-badge {
    font-size:.72em; color:var(--gray);
    border:1px solid var(--line); border-radius:3px;
    padding:1px 6px; white-space:nowrap;
}
.bi-title .new-badge {
    font-size:.7em; background:#c0392b; color:white;
    border-radius:3px; padding:1px 6px;
}
.bi-name { font-size:.85em; color:var(--gray); text-align:center; }
.bi-date { font-size:.8em; color:var(--gray-lt); text-align:center; }
.bi-status { text-align:center; font-size:.8em; }
.status-answered {
    display:inline-block;
    background:var(--ink); color:var(--paper);
    border-radius:3px; padding:2px 8px; font-size:.75em;
}
.status-waiting {
    display:inline-block;
    border:1px solid var(--line); color:var(--gray);
    border-radius:3px; padding:2px 8px; font-size:.75em;
}

.board-detail {
    display:none;
    background:var(--cream);
    border-bottom:1px solid var(--line);
    padding:24px 28px;
}
.board-detail.open { display:block; }
.detail-private-msg {
    display:flex; flex-direction:column; align-items:center;
    padding:32px 0; color:var(--gray); gap:10px; font-size:.95em;
}
.detail-private-msg .lock-icon { font-size:2em; }
.detail-unlock-form { display:flex; gap:10px; margin-top:8px; }
.detail-unlock-input {
    background:var(--paper); border:1px solid var(--line);
    border-radius:3px; padding:9px 14px;
    font-size:.88em; color:var(--ink);
    font-family:inherit; outline:none; width:160px;
}
.detail-unlock-btn {
    background:var(--ink); color:var(--paper);
    border:none; border-radius:3px;
    padding:9px 18px; font-size:.85em; font-weight:700;
    cursor:pointer; font-family:inherit;
}
.detail-q-label { font-size:.75em; color:var(--gray); font-weight:700; letter-spacing:1px; margin-bottom:8px; }
.detail-q-content {
    font-size:.95em; line-height:1.9; color:var(--ink-soft);
    padding-bottom:20px; border-bottom:1px solid var(--line);
    margin-bottom:20px; white-space:pre-wrap;
}
.detail-answer {
    background:var(--paper);
    border-left:3px solid var(--ink);
    padding:18px 20px;
    margin-top:4px;
}
.detail-a-label {
    font-size:.75em; font-weight:700; letter-spacing:1px;
    color:var(--ink); margin-bottom:8px; display:flex; align-items:center; gap:8px;
}
.detail-a-content { font-size:.93em; line-height:1.9; color:var(--ink-soft); white-space:pre-wrap; }
.detail-no-answer { font-size:.88em; color:var(--gray-lt); padding:14px 0; }

.admin-answer-form { margin-top:16px; display:none; }
.admin-answer-form.open { display:block; }
.admin-answer-form textarea {
    width:100%; background:var(--warm); border:1px solid var(--line);
    border-radius:3px; padding:11px 14px; font-size:.9em;
    color:var(--ink); font-family:inherit; outline:none;
    resize:vertical; min-height:90px; margin-bottom:10px;
}
.admin-answer-form textarea:focus { border-color:var(--ink); }
.admin-btns { display:flex; gap:10px; }
.btn-admin-save {
    background:var(--ink); color:var(--paper); border:none;
    border-radius:3px; padding:9px 20px; font-size:.85em; font-weight:700;
    cursor:pointer; font-family:inherit;
}
.btn-admin-cancel {
    background:none; border:1px solid var(--line); border-radius:3px;
    padding:8px 16px; font-size:.85em; color:var(--gray);
    cursor:pointer; font-family:inherit;
}

.admin-bar {
    background:var(--ink); color:rgba(255,255,255,.6);
    font-size:.8em; padding:8px 20px;
    display:flex; align-items:center; gap:12px;
    border-radius:3px; margin-bottom:20px;
}
.admin-bar span { color:rgba(255,255,255,.9); font-weight:700; }
.admin-logout {
    margin-left:auto; background:none;
    border:1px solid rgba(255,255,255,.2); border-radius:3px;
    color:rgba(255,255,255,.5); padding:3px 10px; font-size:.85em;
    cursor:pointer; font-family:inherit;
}

.post-actions { display:flex; gap:8px; margin-top:14px; }
.btn-edit, .btn-delete {
    font-size:.8em; background:none; border:1px solid var(--line);
    border-radius:3px; padding:5px 12px; cursor:pointer;
    font-family:inherit; color:var(--gray); transition:border-color .2s, color .2s;
}
.btn-edit:hover { border-color:var(--ink); color:var(--ink); }
.btn-delete:hover { border-color:#c0392b; color:#c0392b; }

.pw-confirm {
    display:none; margin-top:10px; padding:12px;
    background:var(--paper); border:1px solid var(--line); border-radius:4px;
}
.pw-confirm.open { display:flex; gap:8px; align-items:center; }
.pw-confirm input {
    background:var(--warm); border:1px solid var(--line);
    border-radius:3px; padding:8px 12px; font-size:.88em;
    font-family:inherit; outline:none; width:160px;
}
.pw-confirm input:focus { border-color:var(--ink); }
.pw-confirm button {
    background:var(--ink); color:var(--paper); border:none;
    border-radius:3px; padding:8px 16px; font-size:.82em;
    font-weight:700; cursor:pointer; font-family:inherit;
}
.pw-confirm .pw-cancel {
    background:none; border:1px solid var(--line); color:var(--gray); font-weight:400;
}

.edit-form { display:none; margin-top:14px; }
.edit-form.open { display:block; }
.edit-form input, .edit-form textarea {
    width:100%; background:var(--warm); border:1px solid var(--line);
    border-radius:3px; padding:10px 14px; font-size:.9em;
    color:var(--ink); font-family:inherit; outline:none; margin-bottom:8px;
}
.edit-form textarea { resize:vertical; min-height:80px; }
.edit-form input:focus, .edit-form textarea:focus { border-color:var(--ink); }

.admin-float {
    display:none; position:fixed; bottom:24px; right:24px; z-index:300;
    background:var(--ink); color:var(--paper);
    border-radius:50px; padding:10px 20px;
    font-size:.82em; font-weight:700;
    box-shadow:0 4px 16px rgba(0,0,0,.3);
    cursor:pointer; transition:opacity .2s;
    align-items:center; gap:10px;
}
.admin-float.on { display:flex; }
.admin-float:hover { opacity:.85; }
.admin-float-dot {
    width:8px; height:8px; border-radius:50%;
    background:#27ae60; animation:pulse 2s infinite;
}
@keyframes pulse {
    0%, 100% { opacity:1; }
    50% { opacity:.4; }
}
.admin-float-close {
    background:none; border:none; color:rgba(255,255,255,.5);
    font-size:1em; cursor:pointer; margin-left:4px; font-family:inherit;
}

.board-empty {
    text-align:center; padding:56px 0;
    color:var(--gray-lt); font-size:.95em;
    border-bottom:1px solid var(--line);
    background:var(--paper);
}

.modal-bg {
    display:none; position:fixed; inset:0;
    background:rgba(0,0,0,.5); z-index:300;
    align-items:center; justify-content:center;
}
.modal-bg.open { display:flex; }
.modal {
    background:var(--paper); border-radius:6px;
    padding:36px 32px; width:320px; text-align:center;
}
.modal h3 { font-size:1.1em; font-weight:700; margin-bottom:6px; }
.modal p { font-size:.85em; color:var(--gray); margin-bottom:20px; }
.modal input {
    width:100%; background:var(--warm); border:1px solid var(--line);
    border-radius:3px; padding:11px 14px; font-size:.95em;
    color:var(--ink); font-family:inherit; outline:none; margin-bottom:12px;
}
.modal input:focus { border-color:var(--ink); }
.modal-ok {
    width:100%; background:var(--ink); color:var(--paper);
    border:none; border-radius:3px; padding:12px;
    font-size:.95em; font-weight:700; cursor:pointer; font-family:inherit;
}
.modal-cancel {
    display:block; margin-top:10px; font-size:.82em;
    color:var(--gray); cursor:pointer; background:none; border:none;
    font-family:inherit; width:100%;
}

@media(max-width:640px) {
    .board-table-head { grid-template-columns: 40px 1fr 64px; }
    .board-item-row  { grid-template-columns: 40px 1fr 64px; }
}

/* ══ 강의 아카이브 ══ */
.archive { padding: 96px 0; background: var(--paper); }
.curriculum-phases {
    display:grid;
    grid-template-columns: repeat(auto-fill, minmax(220px,1fr));
    gap:16px; margin-top:32px; margin-bottom:56px;
}
.phase-card {
    background:var(--warm); border:1px solid var(--line);
    border-radius:4px; padding:22px 20px;
}
.phase-card.active { border-color:var(--ink); background:var(--water); }
.phase-num {
    font-family:'Georgia',serif; font-size:.7em;
    color:var(--gray-lt); letter-spacing:2px; margin-bottom:8px;
}
.phase-title { font-size:.9em; font-weight:700; margin-bottom:10px; }
.phase-chapters { font-size:.8em; color:var(--gray); line-height:1.8; }
.phase-chapters .current { color:var(--ink); font-weight:600; }

.session-card {
    background:var(--warm); border:1px solid var(--line);
    border-radius:6px; overflow:hidden; margin-bottom:20px;
}
.session-header {
    display:flex; justify-content:space-between; align-items:center;
    padding:22px 28px; cursor:pointer;
    transition:background .2s;
}
.session-header:hover { background:rgba(0,0,0,.02); }
.session-meta { display:flex; align-items:center; gap:16px; }
.session-date {
    font-family:'Georgia',serif; font-size:.82em;
    color:var(--gray); min-width:80px;
}
.session-num {
    font-family:'Georgia',serif; font-size:.7em;
    color:var(--paper); background:var(--ink);
    border-radius:3px; padding:3px 10px; letter-spacing:1px;
}
.session-info { flex:1; margin-left:8px; }
.session-title { font-size:1em; font-weight:700; line-height:1.5; }
.session-sub { font-size:.82em; color:var(--gray); margin-top:2px; }
.session-toggle {
    font-size:1.2em; color:var(--gray-lt); transition:transform .3s;
    background:none; border:none; cursor:pointer; font-family:inherit;
}
.session-toggle.open { transform:rotate(180deg); }
.session-body { display:none; padding:0 28px 28px; }
.session-body.open { display:block; }

.part-block { margin-bottom:32px; }
.part-block:last-child { margin-bottom:0; }
.part-label {
    font-size:.72em; font-weight:700; letter-spacing:2px;
    color:var(--gray); text-transform:uppercase; margin-bottom:14px;
    padding-bottom:8px; border-bottom:1px solid var(--line);
}
.part-title { font-size:1.05em; font-weight:700; margin-bottom:16px; }

.audio-player {
    width:100%; margin-bottom:20px;
    background:var(--paper); border:1px solid var(--line);
    border-radius:4px; padding:12px 16px;
}
.audio-player audio { width:100%; height:36px; }
.audio-label { font-size:.75em; color:var(--gray); margin-bottom:6px; }

.note-section { margin-bottom:24px; }
.note-section:last-child { margin-bottom:0; }
.note-h3 {
    font-size:.92em; font-weight:700; color:var(--ink);
    margin-bottom:10px; padding-left:12px;
    border-left:3px solid var(--ink);
}
.note-content {
    font-size:.88em; color:var(--ink-soft); line-height:2;
    padding-left:16px;
}
.note-content ul { padding-left:18px; }
.note-content li { margin-bottom:4px; }
.note-content strong { color:var(--ink); }
.note-quote {
    background:var(--paper); border-left:3px solid var(--accent);
    padding:14px 18px; margin:12px 0;
    font-size:.88em; color:var(--ink-soft); line-height:1.9;
    font-style:italic; border-radius:0 4px 4px 0;
}
.note-case {
    background:var(--water); border:1px solid var(--line);
    border-radius:4px; padding:14px 18px; margin:12px 0;
    font-size:.85em; color:var(--ink-soft); line-height:1.9;
}
.note-case-label {
    font-size:.72em; font-weight:700; letter-spacing:1px;
    color:var(--accent); margin-bottom:6px;
}
.materials-row {
    display:flex; flex-wrap:wrap; gap:10px; margin-top:16px;
}
.mat-chip {
    font-size:.78em; color:var(--ink-soft);
    border:1px solid var(--line); border-radius:3px;
    padding:6px 14px; text-decoration:none;
    display:inline-flex; align-items:center; gap:6px;
    transition:border-color .2s;
}
.mat-chip:hover { border-color:var(--ink); color:var(--ink); }

/* ══ 선한영향력 ══ */
.impact { padding: 96px 0; background: var(--paper); }
.impact-grid {
    display:grid;
    grid-template-columns:repeat(auto-fill, minmax(200px,1fr));
    gap:1px; border:1px solid var(--line);
    margin-top:40px;
}
.impact-item {
    padding:36px 24px; text-align:center;
    background:var(--paper); border:1px solid var(--line);
}
.impact-num {
    font-family:'Georgia',serif;
    font-size:2.8em; font-weight:700; color:var(--ink);
    line-height:1; margin-bottom:8px;
}
.impact-num sup { font-size:.45em; vertical-align:super; color:var(--gray); }
.impact-label { font-size:.85em; color:var(--gray); line-height:1.5; }

/* ══ 푸터 ══ */
footer {
    background: var(--ink); color:rgba(255,255,255,.4);
    padding:52px 28px;
}
.footer-inner {
    max-width:960px; margin:0 auto;
    display:flex; justify-content:space-between; align-items:flex-start;
    flex-wrap:wrap; gap:32px;
}
.footer-brand { color:rgba(255,255,255,.85); font-size:1em; font-weight:900; margin-bottom:8px; }
.footer-made { font-size:.78em; color:rgba(255,255,255,.3); }
.footer-links { display:flex; flex-direction:column; gap:10px; }
.footer-links a {
    color:rgba(255,255,255,.4); text-decoration:none;
    font-size:.85em; transition:color .2s;
}
.footer-links a:hover { color:rgba(255,255,255,.85); }
.footer-bottom {
    max-width:960px; margin:36px auto 0;
    border-top:1px solid rgba(255,255,255,.08);
    padding-top:24px; font-size:.78em; text-align:center;
}

/* ══ 모바일 드로어 ══ */
.drawer {
    position:fixed; top:60px; left:0; right:0; bottom:0;
    background:var(--paper); z-index:190;
    padding:28px;
    display:none; flex-direction:column; gap:0;
    border-top:1px solid var(--line);
}
.drawer.open { display:flex; }
.drawer a {
    font-size:1.15em; font-weight:600; color:var(--ink);
    text-decoration:none; padding:16px 0;
    border-bottom:1px solid var(--line);
}

/* ══ 반응형 ══ */
@media (max-width:768px) {
    .nav-menu, .nav-btn { display:none; }
    .hamburger { display:flex; }
    .intro-grid { grid-template-columns:1fr; }
    .intro-photo { aspect-ratio:1/1; }
    .book-grid { grid-template-columns:1fr; }
    .book-cover-wrap { max-width:200px; margin:0 auto; }
    .qa-inner { padding:36px 24px; }
    .footer-inner { flex-direction:column; }

    .session-header { flex-direction:column; align-items:flex-start; gap:10px; }
    .session-meta { width:100%; }
    .session-info { margin-left:0; }
    .session-toggle { position:absolute; right:20px; top:22px; }
    .session-header { position:relative; }
}