/* =====================================================================
   뉴플랜 의학칼럼 공통 CSS  (column_list.php / column01.php / column02.php ...)
   ---------------------------------------------------------------------
   - 색상·폰트는 사이트 공통 변수(--pri-*, --pnt-*, --gs*, --serif, --mont)를 그대로 사용
   - 사이트 기본 단위(rem = 뷰포트 연동)와 달리, 본문 가독성을 위해 px 로 작성
   - 목차
       01. 변수 / 기본
       02. 공통 컴포넌트 (버튼, 섹션 제목, 리빌)
       03. 칼럼 리스트 (column_list.php)
       04. 칼럼 상세 (column01.php ...)
       05. 문의 CTA / 하단 이동
       06. 헤더 메뉴 활성 표시
       07. 반응형 / 접근성
   ===================================================================== */

/* ---------- 01. 변수 / 기본 ---------- */
:root {
  --col-accent: var(--pri-3, #E55B5B);
  --col-accent-light: var(--pri-2, #F3625D);
  --col-plum: var(--pri-4, #953055);
  --col-deep: var(--pri-5, #57033E);
  --col-cream: var(--pnt-2, #FFF9EF);
  --col-beige: var(--pnt-3, #F7F2EC);
  --col-text: var(--gs900, #232527);
  --col-text-2: var(--gs800, #444444);
  --col-text-3: var(--gs700, #636363);
  --col-line: var(--gs300, #E2E2E2);
  --col-bg-soft: var(--gs50, #FAFAFA);

  --col-serif: var(--serif, "Noto Serif KR", serif);
  --col-mont: var(--mont, "Montserrat", sans-serif);

  --col-wrap: 1100px;   /* 리스트 / 넓은 영역 */
  --col-read: 820px;    /* 본문 읽기 폭 */
  --col-radius: 24px;
  --col-shadow: 0 10px 30px rgba(87, 3, 62, .08);
  --col-header-h: var(--header-height, 80px);
}

.col-page {
  color: var(--col-text);
  font-size: 18px;
  line-height: 1.8;
  letter-spacing: -0.02em;
  word-break: keep-all;
  overflow-wrap: break-word;
  background: #fff;
}
.col-page *,
.col-page *::before,
.col-page *::after { box-sizing: border-box; }
/* :where() = 특이도 0 → 아래 컴포넌트 클래스가 항상 우선 */
.col-page :where(h1, h2, h3, p, ul, ol, figure) { margin: 0; padding: 0; }
.col-page :where(ul, ol) { list-style: none; }
.col-page :where(img) { display: block; max-width: 100%; height: auto; }
.col-page :where(a) { color: inherit; text-decoration: none; }
.col-page :where(h1, h2, h3) { font-weight: inherit; }

.col-wrap { width: calc(100% - 40px); max-width: var(--col-wrap); margin: 0 auto; }
.col-read { width: calc(100% - 40px); max-width: var(--col-read); margin: 0 auto; }

/* ---------- 02. 공통 컴포넌트 ---------- */
/* 섹션 */
.col-section { position: relative; padding: 88px 0; }
.col-section--tint { background: var(--col-cream); }
.col-section--soft { background: var(--col-beige); }

/* 섹션 제목 (번호 + 제목) */
.col-heading { margin-bottom: 36px; }
.col-heading__no {
  display: inline-flex; align-items: center; justify-content: center;
  height: 30px; padding: 0 14px; margin-bottom: 14px;
  border-radius: 100px;
  font-family: var(--col-mont); font-weight: 700; font-size: 14px; letter-spacing: .08em; line-height: 1;
  color: #fff; background: var(--col-accent);
}
.col-heading__title {
  font-family: var(--col-serif); font-weight: 600;
  font-size: 32px; line-height: 1.45; letter-spacing: -0.03em;
  color: var(--col-deep);
}

/* 본문 텍스트 */
.col-prose p { margin-bottom: 1.3em; color: var(--col-text-2); }
.col-prose p:last-child { margin-bottom: 0; }
.col-prose strong, .col-prose b {
  font-weight: 700; color: var(--col-deep);
  background: linear-gradient(transparent 62%, rgba(243, 98, 93, .22) 0);
}

/* 이미지 */
.col-figure { margin: 0; }
.col-figure img { width: 100%; border-radius: var(--col-radius); }
.col-figure--shadow img { box-shadow: var(--col-shadow); }
.col-figure--plain img { border-radius: 0; box-shadow: none; }

/* 2단 (이미지 + 텍스트) */
.col-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 56px; align-items: center; }
.col-split--reverse .col-split__media { order: 2; }
.col-split__media .col-figure { max-width: 460px; margin: 0 auto; }

/* 카드 */
.col-cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; margin: 40px 0; }
.col-card {
  position: relative; padding: 32px 28px;
  background: #fff; border-radius: var(--col-radius);
  box-shadow: var(--col-shadow); border: 1px solid rgba(149, 48, 85, .08);
  transition: transform .3s ease, box-shadow .3s ease;
}
.col-card:hover { transform: translateY(-4px); box-shadow: 0 16px 36px rgba(87, 3, 62, .12); }
.col-card__icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 56px; height: 56px; margin-bottom: 20px; border-radius: 50%;
  font-size: 22px; color: var(--col-accent); background: var(--col-cream);
}
.col-card__title { margin-bottom: 10px; font-size: 19px; font-weight: 700; line-height: 1.5; color: var(--col-deep); }
.col-card__text { font-size: 16px; line-height: 1.75; color: var(--col-text-3); }

/* STEP */
.col-steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; margin-top: 56px; counter-reset: step; }
.col-step {
  position: relative; padding: 52px 28px 32px; counter-increment: step;
  background: #fff; border-radius: var(--col-radius); box-shadow: var(--col-shadow);
}
.col-step::before {
  content: "STEP " counter(step, decimal-leading-zero);
  position: absolute; top: -16px; left: 28px;
  height: 32px; padding: 0 16px; display: inline-flex; align-items: center;
  border-radius: 100px; background: var(--col-plum); color: #fff;
  font-family: var(--col-mont); font-size: 13px; font-weight: 700; letter-spacing: .08em;
}
.col-step__title { margin-bottom: 12px; font-size: 19px; font-weight: 700; line-height: 1.5; color: var(--col-deep); }
.col-step__text { font-size: 16px; line-height: 1.75; color: var(--col-text-3); }
.col-step__text strong { color: var(--col-accent); font-weight: 700; }

/* 체크리스트 */
.col-split ~ .col-read { margin-top: 44px; }
.col-checklist { margin: 0; }
.col-checklist li {
  display: flex; align-items: flex-start; gap: 16px;
  padding: 20px 4px; border-bottom: 1px solid var(--col-line);
  font-size: 18px; line-height: 1.6; color: var(--col-text);
}
.col-checklist li:first-child { border-top: 1px solid var(--col-line); }
.col-checklist__icon {
  flex: 0 0 32px; width: 32px; height: 32px; margin-top: 1px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%; font-size: 14px; color: #fff; background: var(--col-accent);
}

/* 안내 박스 */
.col-note {
  display: flex; gap: 18px; align-items: flex-start;
  margin-top: 36px; padding: 28px 30px;
  background: #fff; border-radius: 20px; border-left: 5px solid var(--col-accent);
  box-shadow: var(--col-shadow);
}
.col-note__icon { flex: 0 0 auto; margin-top: 4px; font-size: 22px; color: var(--col-accent); }
.col-note p { font-size: 17px; line-height: 1.8; color: var(--col-text-2); }

/* 수치 강조 (pH 등) */
.col-stat {
  display: flex; align-items: center; gap: 28px;
  margin: 36px 0; padding: 32px 36px;
  border-radius: var(--col-radius);
  background: linear-gradient(135deg, var(--col-deep) 0%, var(--col-plum) 100%);
  color: #fff;
}
.col-stat__num { flex: 0 0 auto; font-family: var(--col-mont); font-weight: 700; font-size: 48px; line-height: 1.1; letter-spacing: -0.02em; }
.col-stat__num small { font-size: 22px; font-weight: 600; margin-right: 4px; opacity: .8; }
.col-stat__desc { font-size: 17px; line-height: 1.7; opacity: .92; }

/* 버튼 */
.col-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 56px; padding: 0 32px; border-radius: 100px;
  font-size: 17px; font-weight: 700; line-height: 1; letter-spacing: -0.02em;
  border: 2px solid transparent; cursor: pointer;
  transition: transform .25s ease, box-shadow .25s ease, background-color .25s ease, color .25s ease;
}
.col-btn:hover { transform: translateY(-3px); box-shadow: 0 10px 24px rgba(0, 0, 0, .16); }
.col-btn--tel   { background: #fff; color: var(--col-deep) !important; }
.col-btn--kakao { background: #FEE500; color: #191919 !important; }
.col-btn--naver { background: #03C75A; color: #fff !important; }
.col-btn--line  { background: transparent; color: var(--col-deep) !important; border-color: var(--col-deep); }
.col-btn--line:hover { background: var(--col-deep); color: #fff !important; }

/* 스크롤 등장 (JS 가 below-the-fold 요소에만 .is-hidden 부여 → JS 미동작 시에도 콘텐츠는 항상 보임) */
.col-reveal { transition: opacity .8s ease, transform .8s ease; }
.col-reveal.is-hidden { opacity: 0; transform: translateY(32px); }

/* 읽기 진행 바 */
.col-progress {
  position: fixed; left: 0; top: var(--col-header-h); z-index: 450;
  width: 100%; height: 4px; background: transparent; pointer-events: none;
}
.col-progress__bar {
  display: block; width: 100%; height: 100%;
  background: linear-gradient(90deg, var(--col-accent-light), var(--col-plum));
  transform: scaleX(0); transform-origin: 0 50%; will-change: transform;
}

/* ---------- 상단 히어로 (리스트/상세 공통) ---------- */
.col-hero {
  padding: calc(var(--col-header-h) + 72px) 0 72px;
  text-align: center;
  background: linear-gradient(180deg, var(--col-cream) 0%, #fff 100%);
}
.col-hero__eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--col-mont); font-size: 14px; font-weight: 700; letter-spacing: .24em; text-transform: uppercase; line-height: 1;
  color: var(--col-accent);
}
.col-hero__eyebrow::before, .col-hero__eyebrow::after { content: ""; width: 28px; height: 1px; background: currentColor; opacity: .6; }
.col-hero__title {
  max-width: 880px; margin: 22px auto 0;
  font-family: var(--col-serif); font-weight: 600;
  font-size: 44px; line-height: 1.4; letter-spacing: -0.03em; color: var(--col-deep);
}
.col-hero__lead { max-width: 640px; margin: 20px auto 0; font-size: 18px; color: var(--col-text-3); }
.col-hero__meta {
  display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 8px 18px;
  margin-top: 28px; font-size: 15px; color: var(--col-text-3);
}
.col-hero__meta li { display: inline-flex; align-items: center; gap: 8px; }
.col-hero__meta li + li::before { content: ""; width: 1px; height: 12px; background: var(--col-line); margin-right: 10px; }
.col-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 22px; }
.col-tags li { padding: 7px 16px; border-radius: 100px; font-size: 14px; line-height: 1.2; color: var(--col-plum); background: rgba(149, 48, 85, .08); }
.col-hero__figure { max-width: 620px; margin: 48px auto 0; }
.col-hero__figure img { width: 100%; border-radius: 32px; box-shadow: 0 20px 50px rgba(87, 3, 62, .16); }

/* PC 에서만 줄바꿈 */
.col-page .pc-br { display: inline; }

/* ---------- 03. 칼럼 리스트 ---------- */
.col-hero--list { padding-bottom: 56px; }
.col-listwrap { padding: 24px 0 120px; }
.col-list { border-top: 2px solid var(--col-deep); }
.col-item { border-bottom: 1px solid var(--col-line); }
.col-item__link {
  display: grid; grid-template-columns: 360px minmax(0, 1fr); gap: 44px; align-items: center;
  padding: 40px 12px; transition: background-color .3s ease;
}
.col-item__link:hover { background: var(--col-cream); }
.col-item__thumb { overflow: hidden; border-radius: 20px; background: var(--col-beige); aspect-ratio: 3 / 2; }
.col-item__thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.col-item__link:hover .col-item__thumb img { transform: scale(1.06); }
.col-item__cate {
  display: inline-block; margin-bottom: 14px; padding: 6px 14px; border-radius: 100px;
  font-size: 13px; font-weight: 700; line-height: 1.2; letter-spacing: 0; color: #fff; background: var(--col-accent);
}
.col-item__title {
  margin-bottom: 14px;
  font-family: var(--col-serif); font-weight: 600; font-size: 26px; line-height: 1.5; letter-spacing: -0.03em; color: var(--col-deep);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
  transition: color .3s ease;
}
.col-item__link:hover .col-item__title { color: var(--col-accent); }
.col-item__desc {
  margin-bottom: 22px; font-size: 16px; line-height: 1.75; color: var(--col-text-3);
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.col-item__foot { display: flex; align-items: center; justify-content: space-between; gap: 16px; font-size: 14px; color: var(--col-text-3); }
.col-item__more { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; color: var(--col-plum); }
.col-item__more i { transition: transform .3s ease; }
.col-item__link:hover .col-item__more i { transform: translateX(5px); }

/* ---------- 04. 칼럼 상세 ---------- */
.col-intro { padding-top: 32px; }
.col-lead-box {
  margin-top: 40px; padding: 32px 36px;
  border-radius: var(--col-radius); background: var(--col-cream);
  border: 1px solid rgba(243, 98, 93, .25);
}
.col-lead-box__label {
  display: inline-flex; align-items: center; gap: 8px; margin-bottom: 12px;
  font-size: 15px; font-weight: 700; color: var(--col-accent);
}
.col-lead-box p { margin: 0; color: var(--col-text); }

/* ---------- 05. 문의 CTA / 하단 이동 ---------- */
.col-cta {
  position: relative; overflow: hidden; padding: 88px 0; text-align: center; color: #fff;
  background: linear-gradient(135deg, var(--col-deep) 0%, var(--col-plum) 100%);
}
.col-cta::before, .col-cta::after { content: ""; position: absolute; border-radius: 50%; background: rgba(255, 255, 255, .06); pointer-events: none; }
.col-cta::before { width: 420px; height: 420px; left: -140px; top: -180px; }
.col-cta::after  { width: 320px; height: 320px; right: -100px; bottom: -160px; }
.col-cta__inner { position: relative; z-index: 1; }
.col-cta__eyebrow { font-family: var(--col-mont); font-size: 13px; font-weight: 700; letter-spacing: .24em; opacity: .75; }
.col-cta__title { margin-top: 14px; font-family: var(--col-serif); font-size: 32px; font-weight: 600; line-height: 1.5; letter-spacing: -0.03em; color: #fff; }
.col-cta__text { margin-top: 14px; font-size: 17px; opacity: .88; }
.col-cta__btns { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; margin-top: 40px; }
.col-cta__tel { margin-top: 26px; font-family: var(--col-mont); font-size: 15px; letter-spacing: .04em; opacity: .8; }

.col-pager { padding: 56px 0 120px; text-align: center; background: #fff; }

/* ---------- 06. 헤더 메뉴 활성 표시 (칼럼 페이지에서 '의학칼럼' 강조) ---------- */
.header__nav_ul li.is-current > a { color: var(--pri-3, #E55B5B); font-weight: 700; }
.header__nav_ul_pc li.is-current > a::after { opacity: 1; }

/* ---------- 07. 반응형 ---------- */
@media (max-width: 1024px) {
  .col-section { padding: 72px 0; }
  .col-split { gap: 36px; }
  .col-hero__title { font-size: 38px; }
  .col-item__link { grid-template-columns: 300px minmax(0, 1fr); gap: 32px; }
}

@media (max-width: 768px) {
  .col-page { font-size: 17px; }
  .col-section { padding: 60px 0; }
  .col-heading { margin-bottom: 28px; }
  .col-heading__title { font-size: 26px; }

  .col-hero { padding: calc(var(--col-header-h) + 44px) 0 48px; }
  .col-hero__title { font-size: 28px; margin-top: 18px; }
  .col-hero__lead { font-size: 16px; }
  .col-hero__figure { margin-top: 32px; }
  .col-hero__figure img { border-radius: 22px; }
  .col-hero--list { padding-bottom: 36px; }

  .col-page .pc-br { display: none; }
  .col-split { grid-template-columns: 1fr; gap: 28px; }
  .col-split--reverse .col-split__media { order: 0; }
  .col-split__media .col-figure { max-width: 380px; }

  .col-cards { grid-template-columns: 1fr; gap: 16px; margin: 28px 0; }
  .col-card { padding: 26px 22px; }
  .col-steps { grid-template-columns: 1fr; gap: 32px; margin-top: 44px; }
  .col-step { padding: 48px 22px 26px; }
  .col-checklist li { font-size: 16px; padding: 16px 2px; gap: 12px; }
  .col-note { padding: 22px 20px; gap: 14px; margin-top: 28px; }
  .col-note p { font-size: 16px; }
  .col-stat { flex-direction: column; align-items: flex-start; gap: 10px; padding: 26px 24px; }
  .col-stat__num { font-size: 40px; }
  .col-lead-box { padding: 24px 22px; margin-top: 28px; }

  .col-listwrap { padding-bottom: 80px; }
  .col-item__link { grid-template-columns: 1fr; gap: 20px; padding: 28px 0; }
  .col-item__link:hover { background: transparent; }
  .col-item__title { font-size: 22px; }

  .col-cta { padding: 64px 0; }
  .col-cta__title { font-size: 24px; }
  .col-cta__btns { flex-direction: column; align-items: stretch; max-width: 360px; margin-left: auto; margin-right: auto; }
  .col-btn { width: 100%; }
  .col-pager { padding: 40px 0 88px; }
}

@media (max-width: 480px) {
  .col-wrap, .col-read { width: calc(100% - 32px); }
  .col-hero__title { font-size: 25px; }
  .col-hero__meta { font-size: 14px; }
}

/* 접근성: 키보드 포커스 / 모션 최소화 */
.col-page a:focus-visible, .col-page .col-btn:focus-visible { outline: 3px solid var(--col-accent); outline-offset: 3px; }
@media (prefers-reduced-motion: reduce) {
  .col-reveal, .col-card, .col-btn, .col-item__thumb img, .col-item__more i { transition: none !important; }
  .col-reveal.is-hidden { opacity: 1; transform: none; }
}