/* 한소율 바이올린 — 바이올리니스트 개인 홈페이지 디자인 샘플 (디코랩)
   구성: 바이올린 케이스 안감(딥 틸 벨벳) 위에 놓인 3단 접지 공연 리플릿.
   색은 실물에서: 케이스 안감, 리플릿 종이, 인쇄 먹, 송진, 바이올린 니스 */
:root {
  --color-velvet: #0E4659;       /* 케이스 안감 — 배경·머리글·인쇄 별색 */
  --color-velvet-deep: #082F3D;  /* 안감 그늘 */
  --color-paper: #F5F2EA;        /* 리플릿 종이 */
  --color-paper-shade: #E2DDD0;  /* 접힌 종이 가장자리 */
  --color-insert: #FBFAF6;       /* 별지 종이 */
  --color-ink: #15252C;          /* 인쇄 먹 — 본문 */
  --color-muted: #4D5A5F;
  --color-rosin: #E2A73A;        /* 송진 — 주 버튼(연주 문의)에만 */
  --color-rosin-deep: #CC912A;
  --color-varnish: #A4501F;      /* 바이올린 니스 — 그림에만 */
  --color-rule: rgba(14, 70, 89, .38);

  --font: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, system-ui,
          "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", sans-serif;
  --font-print: "Diphylleia", var(--font);

  --fs-h1: clamp(3.4rem, 2.2rem + 4.2vw, 5.6rem);
  --fs-h2: clamp(1.7rem, 1.35rem + 1.1vw, 2.25rem);
  --fs-h3: 1.08rem;
  --fs-body: 1.0625rem;
  --fs-small: .875rem;

  --radius: 2px;
  --header-h: 60px;
  --gutter: 20px;
  --sheet-w: min(1320px, 100% - 24px);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 8px); }
body {
  margin: 0;
  font-family: var(--font);
  font-size: var(--fs-body);
  line-height: 1.75;
  color: var(--color-ink);
  background-color: var(--color-velvet);
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 .22 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E"),
    radial-gradient(1100px 700px at 25% 8%, rgba(255,255,255,.08), transparent 62%),
    radial-gradient(900px 900px at 85% 55%, rgba(0,0,0,.2), transparent 62%);
  word-break: keep-all;
  overflow-wrap: anywhere;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { line-height: 1.25; letter-spacing: -.02em; margin: 0; text-wrap: balance; }
p { margin: 0; text-wrap: pretty; }
ul, ol, dl, dd, figure { margin: 0; padding: 0; }
a { color: inherit; }
img, svg { display: block; max-width: 100%; }
[hidden] { display: none !important; }
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.container { width: min(1200px, 100% - var(--gutter) * 2); margin-inline: auto; }
.skip-link { position: absolute; left: 12px; top: -60px; z-index: 100; padding: 10px 16px; background: var(--color-ink); color: #fff; }
.skip-link:focus { top: 12px; }
:focus-visible { outline: 3px solid var(--color-rosin); outline-offset: 3px; }

/* 실제 정보 자리 */
.ph { display: inline-block; padding: 0 .4em; border: 1.5px dashed currentColor; border-radius: 3px; opacity: .78; font-size: .92em; line-height: 1.5; }

/* 샘플 안내 띠 */
.sample-banner { background: #061F29; color: #DCE6E8; font-size: var(--fs-small); line-height: 1.6; }
.sample-banner__inner { display: flex; gap: 10px; align-items: baseline; padding: 9px 0; }
.sample-banner__tag { flex: none; padding: 1px 8px; border-radius: 99px; background: var(--color-rosin); color: var(--color-ink); font-weight: 700; font-size: .78rem; }
.sample-banner a { color: var(--color-rosin); font-weight: 600; }

/* 머리글 — backdrop-filter 를 쓰지 않는다(모바일 목차가 머리글 높이로 잘리는 문제) */
.site-header { position: sticky; top: 0; z-index: 50; background: var(--color-velvet-deep); color: var(--color-paper); border-bottom: 1px solid rgba(245,242,234,.16); }
.site-header__inner { display: flex; align-items: center; gap: 12px; height: var(--header-h); }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; margin-right: auto; }
.logo svg { width: 32px; height: 32px; }
.logo b { font-family: var(--font-print); font-weight: 400; font-size: 1.4rem; letter-spacing: -.01em; }
.logo b span { margin-left: 6px; font-family: var(--font); font-size: .78rem; font-weight: 600; letter-spacing: .02em; opacity: .75; }

/* 목차 = 리플릿 뒷면 목차 */
.face { display: inline-grid; grid-template-columns: repeat(3, 6px); gap: 1px; height: 12px; flex: none; }
.face i { border: 1px solid currentColor; opacity: .5; }
.face[data-face="i1"] i:nth-child(1), .face[data-face="i2"] i:nth-child(2), .face[data-face="i3"] i:nth-child(3) { background: currentColor; opacity: .85; }
.face--out i { border-style: dotted; }
.face--insert { grid-template-columns: 10px; }
.face--insert i { background: currentColor; opacity: .85; transform: rotate(-9deg); }
.toc a { text-decoration: none; }
.toc a.is-active .face i { opacity: 1; }
.toc a.is-active .face[data-face="i1"] i:nth-child(1),
.toc a.is-active .face[data-face="i2"] i:nth-child(2),
.toc a.is-active .face[data-face="i3"] i:nth-child(3),
.toc a.is-active .face--insert i { background: var(--color-rosin); border-color: var(--color-rosin); }
.toc__cta { background: var(--color-rosin); color: var(--color-ink) !important; font-weight: 700; border: 1.5px solid var(--color-ink); }
.header-tel { display: grid; width: 42px; height: 42px; border: 1.5px solid rgba(245,242,234,.6); border-radius: 50%; place-items: center; color: var(--color-paper); }
.header-tel svg { width: 19px; height: 19px; }
.menu-toggle { width: 44px; height: 44px; border: 0; background: none; padding: 0; cursor: pointer; position: relative; color: var(--color-paper); }
.menu-toggle__bar, .menu-toggle__bar::before, .menu-toggle__bar::after { position: absolute; left: 10px; width: 24px; height: 2px; background: currentColor; content: ""; transition: transform .25s, opacity .2s; }
.menu-toggle__bar { top: 21px; }
.menu-toggle__bar::before { left: 0; top: -7px; }
.menu-toggle__bar::after { left: 0; top: 7px; }
.site-header.is-open .menu-toggle__bar { background: transparent; }
.site-header.is-open .menu-toggle__bar::before { transform: translateY(7px) rotate(45deg); }
.site-header.is-open .menu-toggle__bar::after { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 1099px) {
  .toc {
    position: fixed; top: var(--menu-top, 100px); left: 0; right: 0; bottom: 0; z-index: 60;
    display: flex; flex-direction: column; gap: 0;
    padding: 18px 24px calc(28px + env(safe-area-inset-bottom));
    background: var(--color-paper); color: var(--color-ink);
    overflow-y: auto; visibility: hidden; opacity: 0; transform: translateY(-8px);
    transition: opacity .2s ease, transform .2s ease, visibility 0s linear .2s;
  }
  .site-header.is-open .toc { visibility: visible; opacity: 1; transform: none; transition: opacity .2s ease, transform .2s ease, visibility 0s; }
  .toc__label { font-family: var(--font-print); font-size: 1.1rem; color: var(--color-velvet); padding-bottom: 8px; border-bottom: 3px double var(--color-velvet); margin-bottom: 4px; }
  .toc a:not(.toc__cta) { display: grid; grid-template-columns: 30px 5.2em 1fr; align-items: center; padding: 13px 0; border-bottom: 1px dashed var(--color-rule); font-family: var(--font-print); font-size: 1.22rem; color: var(--color-velvet); }
  .toc__where { font-family: var(--font); font-size: .8rem; font-weight: 600; color: var(--color-muted); }
  .toc a.is-active:not(.toc__cta) { background: linear-gradient(90deg, rgba(226,167,58,.22), transparent 80%); }
  .toc__cta { margin-top: 20px; display: flex; align-items: center; justify-content: center; min-height: 52px; font-size: 1.05rem; }
}
@media (min-width: 1100px) {
  :root { --header-h: 64px; }
  .menu-toggle { display: none; }
  .toc { display: flex; align-items: center; gap: 2px; }
  .toc__label { font-size: .75rem; font-weight: 700; opacity: .6; padding-right: 10px; margin-right: 6px; border-right: 1px solid rgba(245,242,234,.3); }
  .toc a { display: flex; align-items: center; gap: 7px; padding: 8px 10px; font-weight: 600; font-size: .93rem; border-radius: var(--radius); position: relative; }
  .toc a:not(.toc__cta):hover { background: rgba(245,242,234,.08); }
  .toc a.is-active:not(.toc__cta) { color: #fff; }
  .toc a.is-active:not(.toc__cta)::after { content: ""; position: absolute; left: 10px; right: 10px; bottom: 1px; height: 2px; background: var(--color-rosin); }
  .toc__where { display: none; }
  .toc__cta { margin-left: 10px; padding: 8px 16px !important; }
}

/* 버튼 */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 50px; padding: 0 22px; border-radius: var(--radius); font-weight: 700; font-size: 1rem; text-decoration: none; border: 1.5px solid var(--color-ink); cursor: pointer; font-family: inherit; transition: transform .18s ease, background-color .18s ease, color .18s ease; }
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(1px); }
.btn--rosin { background: var(--color-rosin); color: var(--color-ink); box-shadow: 0 2px 0 var(--color-ink); }
.btn--rosin:hover { background: #EBB651; }
.btn--line, .btn--line-dark { background: transparent; color: var(--color-velvet); border-color: var(--color-velvet); }
.btn--line:hover, .btn--line-dark:hover { background: rgba(14,70,89,.08); }

/* ---------- 표지 ---------- */
.cover { padding: 14px 0 34px; }
.cover__stage { width: var(--sheet-w); margin-inline: auto; position: relative; }
.cover__instrument { display: none; }
.cover__sheet { position: relative; isolation: isolate; margin-right: 8px; }
/* 접혀 있는 안쪽 면 두 장의 가장자리 */
.cover__sheet::before, .cover__sheet::after { content: ""; position: absolute; z-index: -1; background: var(--color-paper-shade); box-shadow: 0 18px 30px -14px rgba(0,0,0,.5); }
.cover__sheet::before { inset: 4px -4px -4px 4px; }
.cover__sheet::after { inset: 8px -8px -8px 8px; background: #CFC8B8; z-index: -2; }
.cover__paper { position: relative; background: var(--color-paper); padding: 26px 22px 24px; box-shadow: 0 26px 50px -18px rgba(0,0,0,.55); }
.cover__paper::before { content: ""; position: absolute; inset: 10px; border: 1px solid var(--color-rule); pointer-events: none; }
.cover__top { display: flex; justify-content: space-between; gap: 12px; font-family: var(--font-print); font-size: .95rem; color: var(--color-velvet); padding-bottom: 8px; border-bottom: 3px double var(--color-velvet); margin-bottom: 22px; }
.cover__vignette { position: absolute; width: 58px; height: 174px; right: 30px; top: 74px; transform: rotate(16deg); filter: drop-shadow(0 6px 6px rgba(0,0,0,.18)); }
.cover__title { font-family: var(--font-print); font-weight: 400; font-size: var(--fs-h1); line-height: 1.02; letter-spacing: -.01em; color: var(--color-velvet); }
.cover__role { display: block; font-family: var(--font); font-size: 1rem; font-weight: 700; letter-spacing: .01em; color: var(--color-ink); margin-bottom: 4px; }
.cover__sub { margin-top: 14px; font-weight: 700; font-size: 1.02rem; padding-right: 64px; }
.cover__lead { margin: 10px 0 20px; color: var(--color-muted); font-size: .98rem; line-height: 1.7; }
.cover__actions { display: flex; flex-wrap: wrap; gap: 8px; }
.cover__actions .btn { flex: 1 1 auto; }
.cover__facts { margin-top: 20px; border-top: 1px solid var(--color-rule); font-size: .92rem; }
.cover__facts div { display: grid; grid-template-columns: 3.4em 1fr; gap: 8px; padding: 7px 0; border-bottom: 1px solid var(--color-rule); }
.cover__facts dt { font-weight: 700; color: var(--color-velvet); }
.cover__unfold { margin-top: 16px; display: flex; align-items: center; gap: 10px; font-family: var(--font-print); color: var(--color-velvet); }
.cover__unfold-icon { width: 26px; height: 15px; border: 1.5px solid currentColor; background: linear-gradient(90deg, transparent 32%, currentColor 32% 35%, transparent 35% 65%, currentColor 65% 68%, transparent 68%); }

@media (min-width: 640px) {
  .cover__paper { padding: 40px 44px 36px; }
  .cover__paper::before { inset: 14px; }
  .cover__vignette { width: 84px; height: 252px; right: 52px; top: 96px; }
  .cover__sub { padding-right: 110px; }
  .cover__actions .btn { flex: 0 1 auto; }
  .cover__lead { max-width: 30em; }
}
@media (min-width: 1100px) {
  .cover { padding: 0; }
  .cover__stage {
    display: grid; grid-template-columns: 1fr minmax(500px, 580px); align-items: center; gap: 40px;
    min-height: calc(100svh - var(--header-h) - var(--sample-banner-h, 40px)); padding: 36px 0 56px;
  }
  .cover__instrument { display: block; position: relative; align-self: stretch; min-height: 560px; }
  .cover__violin { position: absolute; width: 230px; height: 690px; left: 46%; top: 50%; transform: translate(-50%, -50%) rotate(-34deg); filter: drop-shadow(0 34px 26px rgba(0,0,0,.5)); }
  .cover__bow { position: absolute; width: 760px; height: 38px; left: 50%; top: 58%; transform: translate(-50%, -50%) rotate(-58deg); filter: drop-shadow(0 18px 12px rgba(0,0,0,.45)); }
  .cover__sheet { margin-right: 14px; }
  .cover__sheet::before { inset: 6px -7px -6px 7px; }
  .cover__sheet::after { inset: 12px -14px -12px 14px; }
  .cover__paper { padding: 52px 56px 44px; }
  .cover__vignette { display: none; }
  .cover__sub { padding-right: 0; }
}

/* 히어로 순차 등장 — JS 가 motion-ready 를 붙였을 때만 숨긴다 */
.motion-ready [data-hero-item] { opacity: 0; transform: translateY(12px); transition: opacity .6s ease, transform .6s cubic-bezier(.2,.7,.2,1); }
.motion-ready .cover.is-ready [data-hero-item] { opacity: 1; transform: none; }
.motion-ready .cover.is-ready [data-hero-item]:nth-child(3) { transition-delay: .08s; }
.motion-ready .cover.is-ready [data-hero-item]:nth-child(4) { transition-delay: .16s; }
.motion-ready .cover.is-ready [data-hero-item]:nth-child(5) { transition-delay: .24s; }
.motion-ready .cover.is-ready [data-hero-item]:nth-child(6) { transition-delay: .32s; }
.motion-ready .cover.is-ready [data-hero-item]:nth-child(n+7) { transition-delay: .4s; }

/* ---------- 펼침면 (안쪽·바깥 공통) ---------- */
.spread { width: var(--sheet-w); margin-inline: auto; display: grid; grid-template-columns: 1fr; position: relative; }
.panel { position: relative; }
.panel__back { display: none; }
.panel__face { position: relative; height: 100%; background: var(--color-paper); padding: 34px 22px 38px; box-shadow: 0 24px 40px -22px rgba(0,0,0,.6); }
/* 모바일: 면 사이 가로 접힘선 */
.panel + .panel > .panel__face { border-top: 1px dashed rgba(21,37,44,.18); }
.panel + .panel > .panel__face::after { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 30px; background: linear-gradient(180deg, rgba(21,37,44,.08), rgba(21,37,44,0)); pointer-events: none; }
.panel__no { display: inline-block; font-family: var(--font-print); font-size: .9rem; color: var(--color-velvet); border: 1px solid var(--color-rule); padding: 0 10px; margin-bottom: 14px; }
.panel h2 { font-family: var(--font-print); font-weight: 400; font-size: var(--fs-h2); color: var(--color-velvet); letter-spacing: -.01em; margin-bottom: 14px; }
.panel__h3 { font-size: var(--fs-h3); font-weight: 700; margin: 28px 0 10px; padding-bottom: 6px; border-bottom: 3px double var(--color-rule); }
.panel__lead { color: var(--color-muted); }
.panel__note { margin-top: 12px; font-size: .92rem; color: var(--color-muted); }
.panel__link { display: inline-block; margin-top: 24px; font-weight: 700; color: var(--color-velvet); text-underline-offset: 5px; text-decoration-thickness: 1.5px; }

.events div { display: grid; grid-template-columns: 5em 1fr; gap: 10px; padding: 9px 0; border-bottom: 1px dotted var(--color-rule); }
.events dt { font-family: var(--font-print); font-size: 1.12rem; color: var(--color-velvet); }
.events dd { font-size: .95rem; }
.ensembles { list-style: none; }
.ensembles li { display: grid; grid-template-columns: 80px 1fr; gap: 12px; align-items: center; padding: 10px 0; border-bottom: 1px dotted var(--color-rule); }
.ensembles svg { width: 80px; height: 48px; }
.ensembles b { display: block; font-family: var(--font-print); font-weight: 400; font-size: 1.12rem; color: var(--color-velvet); }
.ensembles span { font-size: .93rem; }

.portrait { margin: 6px 0 18px; }
.portrait svg { width: 100%; max-width: 300px; height: auto; margin-inline: auto; }
.portrait figcaption { text-align: center; font-size: .82rem; color: var(--color-muted); margin-top: 6px; }
.career div { display: grid; grid-template-columns: 5em 1fr; gap: 10px; padding: 8px 0; border-bottom: 1px dotted var(--color-rule); font-size: .95rem; }
.career dt { font-weight: 700; color: var(--color-velvet); }

.first-lesson { list-style: none; counter-reset: step; }
.first-lesson li { counter-increment: step; display: grid; grid-template-columns: 30px 1fr; gap: 10px; padding: 7px 0; font-size: .97rem; }
.first-lesson li::before { content: counter(step); width: 26px; height: 26px; border: 1px solid var(--color-velvet); border-radius: 50%; display: grid; place-items: center; font-family: var(--font-print); color: var(--color-velvet); font-size: .95rem; line-height: 1; margin-top: 1px; }
.fee { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.fee th, .fee td { padding: 10px 0; border-bottom: 1px dotted var(--color-rule); text-align: left; font-weight: 600; }
.fee th small { display: block; font-weight: 400; color: var(--color-muted); font-size: .82rem; }
.fee td { text-align: right; font-family: var(--font-print); font-size: 1.25rem; font-weight: 400; color: var(--color-velvet); white-space: nowrap; }

@media (min-width: 640px) {
  .panel__face { padding: 44px 40px 48px; }
}
@media (min-width: 1100px) {
  .spread { grid-template-columns: repeat(3, 1fr); perspective: 2800px; transform-style: preserve-3d; }
  .panel { transform-style: preserve-3d; }
  .panel__face { padding: 52px clamp(28px, 2.6vw, 44px) 56px; backface-visibility: hidden; }
  .panel + .panel > .panel__face { border-top: 0; }
  /* 세로 접힘선: 접힌 골은 살짝 어둡게, 종이 결은 그대로 */
  .spread > .panel > .panel__face::after { content: ""; position: absolute; inset: 0; height: auto; pointer-events: none; }
  .spread > .panel--1 > .panel__face::after { background: linear-gradient(90deg, rgba(21,37,44,0) 86%, rgba(21,37,44,.09)); }
  .spread > .panel--2 > .panel__face::after { background: linear-gradient(90deg, rgba(21,37,44,.1), rgba(21,37,44,0) 12%, rgba(21,37,44,0) 88%, rgba(21,37,44,.1)); border-left: 1px solid rgba(21,37,44,.1); border-right: 1px solid rgba(21,37,44,.1); }
  .spread > .panel--3 > .panel__face::after { background: linear-gradient(90deg, rgba(21,37,44,.09), rgba(21,37,44,0) 14%); }

  /* 접힌 면의 바깥쪽(뒷면 인쇄) */
  .motion-ready .spread--inside .panel__back {
    display: flex; flex-direction: column; justify-content: space-between; position: absolute; inset: 0;
    padding: 48px 40px; background: var(--color-paper); color: var(--color-velvet);
    transform: rotateY(180deg); backface-visibility: hidden; box-shadow: 0 24px 40px -22px rgba(0,0,0,.6);
    background-image: radial-gradient(circle at 50% 42%, rgba(14,70,89,.12) 0 110px, transparent 111px);
  }
  .panel__back p { font-family: var(--font-print); font-size: 2rem; line-height: 1.2; border-bottom: 3px double currentColor; padding-bottom: 12px; }
  .panel__back span { font-size: .9rem; font-weight: 600; }

  /* 대표 모션: 화면에 들어오면 1면·3면이 접힘선을 축으로 한 번 펼쳐진다 (scrub 아님) */
  .spread--inside .panel--1 { transform-origin: right center; transition: transform 1.15s cubic-bezier(.55,.06,.2,1); }
  .spread--inside .panel--3 { transform-origin: left center; transition: transform 1.15s cubic-bezier(.55,.06,.2,1) .55s; }
  .motion-ready .spread--inside:not(.is-open) .panel--1 { transform: translateZ(3px) rotateY(180deg); }
  .motion-ready .spread--inside:not(.is-open) .panel--3 { transform: translateZ(1.5px) rotateY(-180deg); }
}
/* 모바일: 면이 위 접힘선에서 내려 펼쳐진다 */
@media (max-width: 1099px) {
  .spread--inside .panel__face { transform-origin: top center; transition: transform .8s cubic-bezier(.3,.7,.2,1), opacity .5s ease; }
  .motion-ready .spread--inside .panel:not(.is-in) .panel__face { transform: perspective(1400px) rotateX(-34deg); opacity: .3; }
}

/* ---------- 별지: 연주 순서 짜기 ---------- */
.insert { padding: 56px 0 44px; }
.insert__sheet { position: relative; width: min(1200px, 100% - 24px); margin-inline: auto; background: var(--color-insert); padding: 34px 20px 28px; box-shadow: 0 30px 50px -22px rgba(0,0,0,.6); }
/* 위쪽 뜯는 선 */
.insert__sheet::before { content: ""; position: absolute; left: 0; right: 0; top: -5px; height: 10px; background: radial-gradient(circle at 8px 5px, var(--color-velvet) 3px, transparent 3.5px) repeat-x; background-size: 16px 10px; }
.insert__tab { position: absolute; left: 20px; top: 0; transform: translateY(-100%); background: var(--color-insert); padding: 4px 16px 2px; font-family: var(--font-print); color: var(--color-velvet); font-size: 1rem; }
.insert__head { max-width: 40em; margin-bottom: 26px; }
.insert__head h2 { font-family: var(--font-print); font-weight: 400; font-size: var(--fs-h2); color: var(--color-velvet); margin-bottom: 10px; }
.insert__head p { color: var(--color-muted); }
.insert__grid { display: grid; gap: 28px; }

.picker fieldset { border: 0; padding: 0; margin: 0 0 18px; display: flex; flex-wrap: wrap; gap: 8px; }
.picker legend { width: 100%; font-weight: 700; margin-bottom: 8px; padding: 0; }
.chip { position: relative; cursor: pointer; }
.chip input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.chip span { display: inline-flex; align-items: center; min-height: 44px; padding: 0 16px; border: 1.5px solid var(--color-velvet); color: var(--color-velvet); font-weight: 600; border-radius: var(--radius); background: transparent; transition: background-color .15s ease, color .15s ease; }
.chip:hover span { background: rgba(14,70,89,.07); }
.chip input:checked + span { background: var(--color-velvet); color: var(--color-paper); }
.chip input:focus-visible + span { outline: 3px solid var(--color-rosin); outline-offset: 2px; }
.picker__need { border-top: 1px dashed var(--color-rule); padding-top: 14px; display: grid; gap: 8px; font-size: .93rem; }
.picker__need b { display: block; color: var(--color-velvet); font-size: .85rem; }

.program-card { position: relative; background: var(--color-paper); border: 1px solid var(--color-velvet); padding: 26px 18px 22px; outline: 1px solid var(--color-rule); outline-offset: -7px; }
.program-card__kicker { display: flex; align-items: center; gap: 12px; justify-content: center; font-size: .82rem; font-weight: 700; color: var(--color-velvet); }
.program-card__kicker::before, .program-card__kicker::after { content: ""; width: 34px; height: 1px; background: currentColor; }
.program-card__title { text-align: center; font-family: var(--font-print); font-size: 1.45rem; color: var(--color-velvet); margin: 4px 0 18px; }
.program { list-style: none; }
.seg { padding: 12px 0; border-top: 1px solid var(--color-rule); }
.seg__head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 10px; margin-bottom: 6px; }
.seg__when { flex: none; min-width: 3.6em; font-size: .78rem; font-weight: 700; color: var(--color-paper); background: var(--color-velvet); padding: 0 7px; text-align: center; }
.seg__head b { font-family: var(--font-print); font-weight: 400; font-size: 1.12rem; }
.seg__head small { margin-left: auto; color: var(--color-muted); font-size: .82rem; font-variant-numeric: tabular-nums; }
.seg ul { list-style: none; display: grid; gap: 3px; }
.seg li { display: flex; align-items: baseline; gap: 8px; font-size: .95rem; }
.seg li i { order: 1; font-style: normal; font-family: var(--font-print); font-size: 1.04rem; }
.seg li::after { content: ""; order: 2; flex: 1 1 20px; border-bottom: 1px dotted rgba(21,37,44,.35); transform: translateY(-4px); }
.seg li span { order: 3; color: var(--color-muted); font-size: .86rem; white-space: nowrap; }
.seg li.is-request i { color: var(--color-velvet); border-bottom: 1.5px dashed var(--color-velvet); }
.seg li.is-more { color: var(--color-muted); font-size: .85rem; }
.seg li.is-more::after { display: none; }
.seg.is-new { animation: seg-in .5s cubic-bezier(.2,.7,.2,1) both; }
@keyframes seg-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.program-card__foot { margin-top: 10px; padding-top: 14px; border-top: 3px double var(--color-velvet); }
.estimate { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; }
.estimate span { font-weight: 700; }
.estimate b { font-family: var(--font-print); font-weight: 400; font-size: 1.7rem; color: var(--color-velvet); font-variant-numeric: tabular-nums; }
.estimate__note { font-size: .82rem; color: var(--color-muted); margin-top: 4px; }

.message { margin-top: 28px; border: 1.5px dashed var(--color-velvet); padding: 18px; background: #fff; }
.message__label { font-weight: 700; color: var(--color-velvet); font-size: .9rem; margin-bottom: 6px; }
.message__text { white-space: pre-line; font-size: .95rem; line-height: 1.7; }
.message__actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 14px; }
.message__status { font-size: .9rem; font-weight: 600; color: var(--color-velvet); }

@media (min-width: 640px) {
  .insert__sheet { padding: 48px 44px 40px; }
  .insert__tab { left: 44px; }
  .program-card { padding: 34px 32px 26px; }
}
@media (min-width: 1100px) {
  .insert { padding: 88px 0 72px; }
  .insert__sheet { padding: 60px 64px 52px; }
  .insert__tab { left: 64px; font-size: 1.1rem; }
  .insert__grid { grid-template-columns: minmax(300px, 380px) 1fr; gap: 52px; align-items: start; }
  .picker { position: sticky; top: calc(var(--header-h) + 28px); }
}

/* ---------- 바깥 펼침면 ---------- */
.spread--outside { margin-bottom: 0; }
.qa { border-bottom: 1px dotted var(--color-rule); }
.qa h3 { font-size: 1rem; }
.qa button { width: 100%; display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; padding: 14px 0; background: none; border: 0; text-align: left; font: inherit; font-weight: 700; color: var(--color-ink); cursor: pointer; line-height: 1.5; }
.qa button::after { content: "+"; flex: none; font-family: var(--font-print); font-size: 1.3rem; line-height: 1; color: var(--color-velvet); transition: transform .2s ease; }
.qa button[aria-expanded="true"]::after { transform: rotate(45deg); }
.qa__panel { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .25s ease; }
.qa__panel > div { overflow: hidden; min-height: 0; }
.qa__panel p { padding-bottom: 14px; font-size: .95rem; color: var(--color-muted); }
.qa.is-open .qa__panel, html:not(.js) .qa__panel { grid-template-rows: 1fr; }

.contact-tel { display: block; margin: 18px 0 14px; text-decoration: none; font-family: var(--font-print); font-size: 2.1rem; line-height: 1.15; color: var(--color-velvet); font-variant-numeric: tabular-nums; }
.contact-tel small { display: block; font-family: var(--font); font-size: .82rem; font-weight: 700; color: var(--color-muted); }
.contact-list { list-style: none; }
.contact-list li { display: grid; grid-template-columns: 5em 1fr; gap: 10px; padding: 8px 0; border-bottom: 1px dotted var(--color-rule); font-size: .95rem; }
.contact-list b { color: var(--color-velvet); }
.checklist { list-style: none; display: grid; gap: 4px; }
.checklist li { display: grid; grid-template-columns: 22px 1fr; gap: 6px; font-size: .96rem; }
.checklist li::before { content: ""; width: 14px; height: 14px; border: 1.5px solid var(--color-velvet); margin-top: 6px; }
.contact-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }

.back-cover .panel__face { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 16px; }
.back-cover .panel__face::before { content: ""; position: absolute; inset: 12px; border: 1px solid var(--color-rule); pointer-events: none; }
.back-cover__top { align-self: stretch; font-family: var(--font-print); color: var(--color-velvet); padding-bottom: 8px; border-bottom: 3px double var(--color-velvet); }
.back-cover__violin { width: 70px; height: 210px; transform: rotate(-12deg); margin: 8px 0; }
.back-cover__name { font-family: var(--font-print); font-size: 3rem; line-height: 1.05; color: var(--color-velvet); }
.back-cover__name small { display: block; font-family: var(--font); font-size: .9rem; font-weight: 700; color: var(--color-ink); margin-bottom: 4px; }
.back-cover__fold { margin-top: auto; font-weight: 700; color: var(--color-velvet); text-underline-offset: 5px; }
@media (min-width: 1100px) {
  .back-cover__violin { width: 96px; height: 288px; }
}

/* ---------- 푸터 ---------- */
.site-footer { margin-top: 56px; background: var(--color-velvet-deep); color: rgba(245,242,234,.82); padding: 36px 0 calc(110px + env(safe-area-inset-bottom)); font-size: .9rem; }
.site-footer__inner { display: grid; gap: 18px; }
.site-footer__logo { font-family: var(--font-print); font-size: 1.4rem; color: var(--color-paper); margin-bottom: 8px; }
.site-footer__biz { line-height: 1.9; }
.site-footer__links { margin-top: 8px; }
.site-footer__links .strong { font-weight: 700; color: var(--color-paper); }
.site-footer__credit a { color: var(--color-rosin); }
@media (min-width: 1100px) {
  .site-footer { padding-bottom: 40px; }
  .site-footer__inner { grid-template-columns: 1fr auto; align-items: end; }
}

/* ---------- 하단 고정 바 (모바일) ---------- */
.quickbar { position: fixed; left: 0; right: 0; bottom: 0; z-index: 40; display: grid; grid-template-columns: 1fr 1fr 1fr 1.5fr; background: var(--color-velvet-deep); border-top: 1px solid rgba(245,242,234,.2); padding-bottom: env(safe-area-inset-bottom); }
.quickbar a { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; min-height: 58px; color: var(--color-paper); text-decoration: none; font-size: .8rem; font-weight: 600; }
.quickbar svg { width: 20px; height: 20px; }
.quickbar__cta { background: var(--color-rosin); color: var(--color-ink) !important; font-size: 1rem !important; font-weight: 700 !important; }
body.nav-open .quickbar { visibility: hidden; }
@media (min-width: 1100px) { .quickbar { display: none; } }

/* 등장 효과 (보이는 상태가 기본) */
.motion-ready .js-reveal:not(.is-in) { opacity: 0; transform: translateY(16px); }
.js-reveal { transition: opacity .6s ease, transform .6s cubic-bezier(.2,.7,.2,1); }

/* 동작 줄이기 — 안전망. 펼침·등장은 JS 가 처음부터 펼친 상태로 둔다 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
  .btn, .chip span, .qa__panel, .toc { transition-duration: .2s !important; }
  .btn:hover, .btn:active { transform: none; }
}