/* ==========================================
   니오라 파트너 사이트 공통 스타일
   - 큰 글씨, 높은 대비 (고령자 친화)
   - 브랜드 색상은 :root 변수만 바꾸면 전체 적용
   ========================================== */

:root {
  /* 니오라 공식 팔레트 — DESIGN.md 참조 (neora.com 분석) */
  --brand: #1D8193;          /* 니오라 teal (메인 포인트) */
  --brand-dark: #113E53;     /* 딥 네이비 */
  --brand-light: #E8F3F5;    /* 연한 teal 배경 */
  --navy: #264B59;           /* 니오라 네이비 — 제목/본문 */
  --text: #264B59;
  --text-soft: #6D7588;
  --bg: #ffffff;
  --bg-soft: #F9F9F9;
  --line: #e2e8ea;
  --accent-cta: #FF9913;     /* CTA 전용 오렌지 */
  --radius: 16px;
  --maxw: 1080px;
}

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

html { font-size: 18px; }             /* 기본 글씨 크게 */
html.font-large { font-size: 22px; }  /* '글씨 크게' 버튼 누르면 */

body {
  font-family: "Pretendard", "Noto Sans KR", "Malgun Gothic", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  word-break: keep-all;   /* 한국어 단어 중간 줄바꿈 방지 */
}

img { max-width: 100%; display: block; }
a { color: var(--brand-dark); }

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- 상단 메뉴 ---------- */
header {
  position: sticky;
  top: 0;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  z-index: 100;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  max-width: 1240px;
  margin: 0 auto;
  flex-wrap: wrap;
  gap: 10px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.logo img { display: block; width: 160px; height: auto; }
.logo span {
  color: var(--brand-dark);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: 2.3px;
  white-space: nowrap;
}
.logo::after {
  content: "BETA";
  display: inline-flex;
  align-items: center;
  min-height: 22px;
  padding: 2px 8px;
  border: 1px solid var(--brand);
  border-radius: 999px;
  background: var(--brand-light);
  color: var(--brand-dark);
  font-size: .58rem;
  font-weight: 800;
  letter-spacing: .08em;
  line-height: 1;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  list-style: none;
}

.nav-links a {
  display: block;
  padding: 8px 14px;
  border-radius: 10px;
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
}
.nav-links a:hover { background: var(--brand-light); }
.nav-links a.active { background: var(--brand); color: #fff; }

.nav-has-submenu {
  position: relative;
}

.nav-menu-trigger {
  display: block;
}

.nav-menu-trigger > a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 10px;
}

.nav-menu-trigger > a::after {
  content: "";
  width: 7px;
  height: 7px;
  margin-top: -4px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform .15s ease, margin .15s ease;
}

.nav-has-submenu.submenu-open .nav-menu-trigger > a::after {
  margin-top: 4px;
  transform: rotate(-135deg);
}

.nav-submenu {
  position: absolute;
  z-index: 120;
  top: calc(100% + 8px);
  left: 0;
  width: 224px;
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 0;
  background: var(--bg);
  box-shadow: 0 8px 18px rgba(28,29,33,.12);
  list-style: none;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-4px);
  transition: opacity .15s ease, transform .15s ease, visibility .15s ease;
}

/* 상위 메뉴와 하위 메뉴 사이의 시각적 간격도 hover 영역으로 연결해요. */
.nav-submenu::before {
  content: "";
  position: absolute;
  top: -9px;
  right: -1px;
  left: -1px;
  height: 9px;
}

.nav-has-submenu:hover .nav-submenu,
.nav-has-submenu:focus-within .nav-submenu,
.nav-has-submenu.submenu-open .nav-submenu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.nav-links .nav-submenu a {
  min-height: 44px;
  display: flex;
  align-items: center;
  padding: 10px 14px;
  border-radius: 0;
  background: var(--bg);
  color: var(--navy);
  white-space: nowrap;
}

.nav-links .nav-submenu a:hover,
.nav-links .nav-submenu a:focus-visible,
.nav-links .nav-submenu a.active {
  background: var(--brand-light);
  color: var(--brand-dark);
  outline: none;
}

/* ---------- 우측 상단 계정 메뉴 ---------- */
.nav-tools { display:flex; align-items:center; gap:10px; margin-left:auto; }
.studio-shortcut {
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 4px 13px 4px 5px;
  border: 1px solid var(--brand);
  border-radius: 28px;
  background: var(--bg);
  color: var(--brand-dark);
  text-decoration: none;
  box-shadow: 0 3px 10px rgba(17,62,83,.08);
}
.studio-shortcut:hover, .studio-shortcut:focus-visible { background: var(--brand-light); border-color: var(--brand-dark); outline: none; }
.studio-shortcut-icon { width:42px; height:42px; flex:0 0 42px; }
.studio-shortcut-icon img { width:42px; height:42px; }
.studio-shortcut-label { display:grid; line-height:1.15; }
.studio-shortcut-label strong { color:var(--brand-dark); font-size:.75rem; white-space:nowrap; }
.account-menu { position:relative; }
.account-trigger {
  min-height:46px; display:flex; align-items:center; gap:9px;
  padding:5px 12px 5px 6px; border:1px solid var(--line); border-radius:25px;
  background:var(--bg); color:var(--navy); font:inherit; cursor:pointer;
}
.account-trigger:hover, .account-trigger:focus-visible { border-color:var(--brand); outline:none; }
.account-avatar {
  width:34px; height:34px; display:grid; place-items:center; border-radius:100%;
  background:var(--brand-dark); color:var(--bg); font-weight:700;
}
.account-label { display:grid; text-align:left; line-height:1.2; }
.account-label strong { font-size:.86rem; }
.account-label small { color:var(--text-soft); font-size:.7rem; margin-top:3px; }
.account-arrow { color:var(--brand); font-size:.75rem; }
.account-dropdown {
  display:none; position:absolute; right:0; top:calc(100% + 10px); z-index:200;
  width:190px; padding:8px; background:var(--bg); border:1px solid var(--line);
  border-radius:10px; box-shadow:0 0 18px rgba(28,29,33,.12), 0 6px 6px rgba(28,29,33,.06);
}
.account-menu.open .account-dropdown { display:grid; }
.account-dropdown a, .account-dropdown button {
  display:block; width:100%; padding:11px 12px; border:0; border-radius:6px;
  background:transparent; color:var(--navy); text-align:left; text-decoration:none;
  font:inherit; font-size:.9rem; font-weight:600; cursor:pointer;
}
.account-dropdown a:hover, .account-dropdown button:hover { background:var(--brand-light); }
.account-dropdown .account-logout { border-top:1px solid var(--line); border-radius:0 0 6px 6px; margin-top:4px; }

/* ---------- 모든 회원 페이지 AI 튜터 ---------- */
.tutor-widget {
  position: fixed;
  right: 24px;
  bottom: 22px;
  z-index: 500;
  font-family: "Pretendard", "Noto Sans KR", "Malgun Gothic", sans-serif;
}

.tutor-float-button {
  min-height: 58px;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  padding: 7px 20px 7px 7px;
  border: 1px solid var(--brand);
  border-radius: 30px;
  background: var(--brand-dark);
  color: var(--bg);
  box-shadow: 0 0 18px rgba(28,29,33,.12), 0 6px 6px rgba(28,29,33,.06);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.tutor-float-button:hover,
.tutor-float-button:focus-visible { background: var(--brand); outline: 2px solid var(--bg); outline-offset: 2px; }
.tutor-float-icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 100%;
  background: var(--bg);
  color: var(--brand-dark);
  font-size: .78rem;
  letter-spacing: 1px;
}

.tutor-widget-panel {
  width: min(390px, calc(100vw - 32px));
  height: min(570px, calc(100vh - 116px));
  display: flex;
  flex-direction: column;
  padding: 0;
  margin-bottom: 12px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg);
  box-shadow: 0 0 18px rgba(28,29,33,.12), 0 6px 6px rgba(28,29,33,.06);
}
.tutor-widget-panel[hidden] { display: none; }

.tutor-widget-head {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 14px 12px 18px;
  background: var(--brand-dark);
  color: var(--bg);
}
.tutor-widget-head > div { display: grid; }
.tutor-widget-head strong { font-family: var(--font-sans); font-weight: 700; font-size: 1.08rem; letter-spacing: -.015em; }
.tutor-widget-status { display: flex; align-items: center; gap: 6px; margin-top: 3px; color: var(--brand-light); font-size: .7rem; }
.tutor-widget-status i { width: 8px; height: 8px; border-radius: 100%; background: var(--text-soft); }
.tutor-widget-status.ready i { background: var(--brand); border: 1px solid var(--bg); }
.tutor-widget-status.responding i { background: var(--brand); border: 1px solid var(--bg); }
.tutor-widget-hide {
  width: 40px;
  height: 40px;
  flex: 0 0 40px;
  display: grid;
  place-items: center;
  border: 1px solid var(--brand);
  border-radius: 100%;
  background: transparent;
  color: var(--bg);
  cursor: pointer;
}
.tutor-widget-hide svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.tutor-widget-hide:hover, .tutor-widget-hide:focus-visible { background: var(--brand); outline: 2px solid var(--bg); outline-offset: 2px; }

.tutor-widget-log {
  flex: 1;
  min-height: 160px;
  overflow-y: auto;
  padding: 18px 16px 8px;
  background: var(--bg-soft);
}
.tutor-widget-message { display: flex; margin-bottom: 14px; }
.tutor-widget-message.user { justify-content: flex-end; }
.tutor-widget-bubble {
  max-width: 84%;
  padding: 11px 13px;
  border-radius: 10px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  color: var(--navy);
  background: var(--brand-light);
  line-height: 1.55;
  font-size: .88rem;
}
.tutor-widget-message.assistant .tutor-widget-bubble { border-radius: 0 10px 10px 10px; }
.tutor-widget-message.user .tutor-widget-bubble { border-radius: 10px 0 10px 10px; background: var(--brand-dark); color: var(--bg); }
.tutor-widget-message.waiting .tutor-widget-bubble { color: var(--text-soft); }

.tutor-widget-suggestions {
  display: grid;
  gap: 6px;
  max-height: 112px;
  overflow-y: auto;
  padding: 9px 12px;
  border-top: 1px solid var(--line);
  background: var(--bg);
}
.tutor-widget-suggestions[hidden] { display: none; }
.tutor-widget-suggestions button {
  width: 100%;
  padding: 7px 10px;
  border: 1px solid var(--brand);
  border-radius: 0;
  background: var(--bg);
  color: var(--navy);
  font: inherit;
  font-size: .72rem;
  cursor: pointer;
}
.tutor-widget-suggestions button:hover { background: var(--brand-light); }

.tutor-widget-form { display: flex; gap: 8px; padding: 11px 12px; border-top: 1px solid var(--line); background: var(--bg); }
.tutor-widget-form textarea {
  flex: 1;
  min-width: 0;
  min-height: 48px;
  max-height: 110px;
  resize: none;
  padding: 10px 11px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--navy);
  font: inherit;
  font-size: .84rem;
}
.tutor-widget-form textarea:focus { outline: 2px solid var(--brand); border-color: var(--brand); }
.tutor-widget-form button {
  width: 70px;
  border: 0;
  border-radius: 0;
  background: var(--accent-cta);
  color: var(--bg);
  font: inherit;
  font-size: .78rem;
  font-weight: 700;
  cursor: pointer;
}
.tutor-widget-form button:disabled { background: var(--text-soft); cursor: wait; }
.tutor-widget-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 12px;
  border-top: 1px solid var(--line);
  color: var(--text-soft);
  background: var(--bg-soft);
  font-size: .66rem;
}
.tutor-widget-foot a { flex: 0 0 auto; color: var(--brand-dark); font-weight: 700; }

.font-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  width: 46px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--brand-dark);
  font-size: 0.82rem;
  font-weight: 700;
  padding: 5px;
  border-radius: 999px;
  cursor: pointer;
}
.font-toggle:hover, .font-toggle:focus-visible { border-color: var(--brand); background: var(--brand-light); outline: none; }
.font-toggle-icon {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  flex: 0 0 34px;
  border-radius: 50%;
  background: var(--brand-dark);
  color: var(--bg);
  font-size: .76rem;
  letter-spacing: -1px;
}
.font-toggle[aria-pressed="true"] .font-toggle-icon { background: var(--brand); }

/* ---------- 히어로 (첫 화면 큰 배너) ---------- */
.hero {
  background: var(--bg-soft);
  padding: 70px 0 60px;
  text-align: center;
}

.hero-photo {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 520px;
  overflow: hidden;
  background-color: var(--navy);
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
  text-align: left;
}
.hero-photo > .container { position: relative; width: 100%; }
.managed-section-background {
  position: relative;
  width: 100%;
  background-repeat: no-repeat !important;
  background-position: center center !important;
  background-size: cover !important;
}
.managed-section-background::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(255,255,255,.92) 0%, rgba(255,255,255,.76) 52%, rgba(255,255,255,.18) 100%);
  pointer-events: none;
}
.managed-section-background > .container { position: relative; z-index: 1; }
.hero-values.managed-section-background::before { background: linear-gradient(90deg, rgba(17,62,83,.78), rgba(17,62,83,.28)); }
.hero.managed-section-background, .deck-hero.managed-section-background { min-height: 390px; display:flex; align-items:center; text-align:left; }
.hero-photo.managed-section-background { min-height: 520px; }
.managed-section-image { margin: 0 0 28px; border: 1px solid var(--line); background: var(--bg-soft); overflow: hidden; }
.managed-section-image img { width: 100%; max-height: 420px; object-fit: cover; }
.hero-home { background-image: url("../assets/images/home-learning.webp"); background-position: center 42%; }
.hero-home.managed-section-background { background-position: center 42% !important; }
.hero-about { background-image: url("../assets/images/about-nature-science.webp"); }
.hero-values { background-image: url("../assets/images/values-together.webp"); }
.hero-photo .hero-copy { max-width: 680px; }
.hero-photo .hero-copy p { margin-right: 0; margin-left: 0; }
.hero.hero-photo h1,
.hero.hero-photo p {
  color: var(--navy);
}
.hero.hero-photo p { font-weight: 600; }
.hero.hero-photo h1 strong { color: var(--brand-dark); }
.hero.hero-values h1,
.hero.hero-values p {
  color: #fff;
  text-shadow: 0 1px 3px rgba(17, 62, 83, .7);
}
.hero.hero-values h1 strong { color: #fff; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.hero-actions .btn-outline { margin-left: 0; }

.hero h1 {
  font-family: var(--font-sans);
  font-weight: 700;
  letter-spacing: -.02em;
  font-size: 2.4rem;
  color: var(--navy);
  margin-bottom: 18px;
  line-height: 1.4;
}
.hero h1 strong { color: var(--brand); }

.hero p {
  font-size: 1.15rem;
  color: var(--text-soft);
  max-width: 640px;
  margin: 0 auto 30px;
}

/* ---------- 버튼 ---------- */
.btn {
  display: inline-block;
  padding: 16px 34px;
  border-radius: 999px;
  font-size: 1.05rem;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.15s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--brand); color: #fff; }
.btn-outline { border: 2px solid var(--brand); color: var(--brand-dark); background: #fff; margin-left: 10px; }

/* ---------- 섹션 공통 ---------- */
section { padding: 60px 0; }
section.alt { background: var(--bg-soft); }

.section-title {
  font-family: var(--font-sans);
  font-weight: 700;
  letter-spacing: -.02em;
  text-align: center;
  font-size: 1.8rem;
  color: var(--navy);
  margin-bottom: 12px;
}
.section-sub {
  text-align: center;
  color: var(--text-soft);
  margin-bottom: 40px;
  font-size: 1.05rem;
}

/* ---------- 카드 ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 22px;
}

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.04);
}

.feature-icon {
  display: block;
  width: 48px;
  height: 48px;
  margin-bottom: 12px;
}
.step-num.icon-step {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg);
}
.step-num.icon-step img { width: 36px; height: 36px; }
.card h3 { color: var(--navy); font-size: 1.2rem; margin-bottom: 10px; }
.card p { color: var(--text-soft); font-size: 0.98rem; }

.card-link {
  text-decoration: none;
  color: inherit;
  display: block;
  transition: transform 0.15s;
}
.card-link:hover { transform: translateY(-3px); }

/* ---------- 2026년 7월 사업소개 ---------- */
.business-intro-section .section-label { text-align: center; }
.business-intro-product {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(360px, 1.1fr);
  align-items: center;
  gap: 36px;
  margin-bottom: 30px;
  padding: 34px;
  border: 1px solid var(--line);
  background: #fff;
}
.business-intro-product-copy > span,
.business-intro-band span {
  display: block;
  margin-bottom: 10px;
  color: var(--brand-dark);
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: 2.3px;
}
.business-intro-product h3,
.business-intro-band h3 {
  margin-bottom: 12px;
  color: var(--navy);
  font-family: var(--font-sans);
  font-size: clamp(1.5rem, 2.5vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.4;
}
.business-intro-product p { color: var(--text-soft); }
.business-intro-product img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
}
.business-intro-band {
  min-height: 320px;
  display: flex;
  align-items: center;
  margin-bottom: 22px;
  padding: 48px;
  background:
    linear-gradient(90deg, rgba(17,62,83,.95) 0%, rgba(17,62,83,.78) 55%, rgba(17,62,83,.42) 100%),
    url("../assets/images/business-introduction-2026-07/business-network-background.webp") center / cover no-repeat;
}
.business-intro-band > div { max-width: 670px; }
.business-intro-band span { color: var(--brand); }
.business-intro-band h3,
.business-intro-band p { color: #fff; }
.business-intro-band p { font-size: 1.02rem; line-height: 1.75; }
.business-intro-cards { margin-top: 0; }
.business-intro-note {
  margin-top: 26px;
  padding: 20px 22px;
  border-left: 4px solid var(--brand);
  background: var(--brand-light);
  color: var(--navy);
  line-height: 1.7;
}
.business-intro-note strong { display: block; margin-bottom: 4px; }
.business-intro-actions {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 28px;
}
.business-intro-actions .btn { border-radius: 0; }

/* ---------- 단계 표시 (시작 가이드) ---------- */
.steps { display: flex; flex-direction: column; gap: 20px; max-width: 760px; margin: 0 auto; }

.step {
  display: flex;
  gap: 20px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  align-items: flex-start;
}

.step-num {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
  font-size: 1.4rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step h3 { color: var(--navy); margin-bottom: 8px; font-size: 1.2rem; }
.step p { color: var(--text-soft); }
.step .tip {
  margin-top: 10px;
  background: var(--brand-light);
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 0.95rem;
  color: var(--brand-dark);
}

/* ---------- 가치 목록 ---------- */
.value-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  margin-bottom: 18px;
}
.value-item h3 { color: var(--brand-dark); font-size: 1.2rem; margin-bottom: 8px; }
.value-item h3 [lang="en"] {
  display: block;
  margin-top: 4px;
  color: var(--text-soft);
  font-size: .78em;
  font-weight: 600;
  line-height: 1.45;
}
.value-item .easy {
  background: var(--bg-soft);
  border-left: 4px solid var(--brand);
  padding: 12px 16px;
  border-radius: 0 10px 10px 0;
  margin-top: 10px;
  font-size: 0.98rem;
}
.value-item .easy strong { color: var(--brand-dark); }

/* ---------- FAQ ---------- */
.faq-container { max-width: 860px; }
.faq-notice {
  margin-bottom: 46px;
  padding: 20px 22px;
  border: 1px solid var(--brand);
  border-left: 5px solid var(--brand);
  background: var(--brand-light);
  color: var(--navy);
}
.faq-notice strong { display: block; margin-bottom: 4px; }
.faq-group { margin-bottom: 48px; }
.faq-group h2 {
  margin: 4px 0 20px;
  color: var(--navy);
  font-family: var(--font-sans);
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: -.02em;
}
.faq-source {
  display: block;
  width: fit-content;
  margin-top: 12px;
  color: var(--brand-dark);
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}
details {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: 14px;
  overflow: hidden;
}
summary {
  cursor: pointer;
  padding: 20px 24px;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--navy);
  list-style: none;
  position: relative;
  padding-right: 50px;
}
summary::-webkit-details-marker { display: none; }
summary::after {
  content: "+";
  position: absolute;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5rem;
  color: var(--brand);
}
details[open] > summary::after { content: "−"; }
details .answer { padding: 0 24px 20px; color: var(--text-soft); }

/* ---------- 알림 박스 ---------- */
.notice {
  max-width: 760px;
  margin: 0 auto;
  background: #fff8e8;
  border: 1px solid #f0dfae;
  border-radius: var(--radius);
  padding: 20px 24px;
  font-size: 0.95rem;
  color: #6b5a1e;
}

/* ---------- 푸터 ---------- */
footer {
  background: var(--navy);
  color: #cfd6e0;
  padding: 40px 0;
  margin-top: 40px;
  font-size: 0.92rem;
}
footer .container { display: flex; flex-wrap: wrap; gap: 30px; justify-content: space-between; }
footer a { color: #fff; }
footer .foot-title { color: #fff; font-weight: 700; margin-bottom: 8px; }
.site-rights{width:100%;margin-top:28px;padding-top:22px;border-top:1px solid rgba(255,255,255,.22)}.site-rights .container{display:grid;gap:7px}.site-rights p{max-width:100%;margin:0;color:#fff;font-size:.78rem;line-height:1.65}.site-rights strong{letter-spacing:.5px}.copyright-only-footer{margin-top:40px}.copyright-only-footer .site-rights{margin-top:0;padding-top:0;border-top:0}

/* ---------- 디자인 스튜디오 새 소식 ---------- */
.studio-news-backdrop {
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(17, 62, 83, .72);
}
.studio-news-dialog {
  width: min(680px, 100%);
  max-height: min(86vh, 780px);
  overflow: auto;
  background: #fff;
  box-shadow: 0 18px 55px rgba(17, 62, 83, .28);
}
.studio-news-head {
  position: relative;
  padding: 30px 68px 24px 30px;
  border-bottom: 1px solid var(--line);
}
.studio-news-head > span,
.studio-news-item > span {
  display: block;
  color: var(--brand);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: 2.3px;
}
.studio-news-head h2 {
  margin: 6px 0;
  color: var(--navy);
  font-family: var(--font-sans);
  font-size: 1.65rem;
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.35;
}
.studio-news-head p {
  color: var(--text-soft);
  font-size: .92rem;
}
.studio-news-close {
  position: absolute;
  top: 18px;
  right: 20px;
  width: 44px;
  height: 44px;
  border: 0;
  background: transparent;
  color: var(--navy);
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
}
.studio-news-close:hover { background: var(--brand-light); }
.studio-news-list {
  display: grid;
  gap: 12px;
  padding: 22px 30px;
}
.studio-news-item {
  padding: 18px 20px;
  border-left: 4px solid var(--brand);
  background: var(--bg-soft);
}
.studio-news-item h3 {
  margin: 4px 0;
  color: var(--navy);
  font-size: 1rem;
  line-height: 1.5;
}
.studio-news-item p {
  color: var(--text-soft);
  font-size: .9rem;
  line-height: 1.65;
}
.studio-news-item a {
  display: inline-block;
  margin-top: 8px;
  color: var(--brand-dark);
  font-size: .88rem;
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.studio-news-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  padding: 0 30px 30px;
}
.studio-news-actions a,
.studio-news-actions button {
  min-height: 52px;
  display: grid;
  place-items: center;
  border-radius: 0;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}
.studio-news-studio-link {
  border: 1px solid var(--brand);
  background: #fff;
  color: var(--navy);
}
.studio-news-actions button {
  border: 1px solid var(--accent-cta);
  background: var(--accent-cta);
  color: #fff;
}
html.studio-news-open,
html.studio-news-open body { overflow: hidden; }

/* ---------- 모바일 ---------- */
@media (max-width: 640px) {
  html { font-size: 17px; }
  html.font-large { font-size: 20px; }
  body { line-height: 1.65; }
  .container { padding-right: 16px; padding-left: 16px; }
  section { padding: 42px 0; }
  .hero { padding: 46px 0 40px; }
  .hero-photo { min-height: 470px; text-align: center; background-position: center; }
  .hero-home, .hero-home.managed-section-background { background-position: 62% center !important; }
  .hero-about, .hero-about.managed-section-background { background-position: 58% center !important; }
  .hero-values, .hero-values.managed-section-background { background-position: center !important; }
  .hero.hero-photo h1,
  .hero.hero-photo p,
  .hero.hero-photo h1 strong {
    color: var(--brand-dark);
    text-shadow: none;
  }
  .hero-photo .hero-copy p { margin-right: auto; margin-left: auto; }
  .hero-actions { display: grid; gap: 10px; }
  .hero-actions .btn-outline { margin-top: 0; }
  .hero h1 { font-size: 1.85rem; line-height: 1.35; }
  .hero p { font-size: 1rem; margin-bottom: 24px; }
  .btn { width: 100%; padding: 14px 18px; text-align: center; }
  .btn-outline { margin: 10px 0 0; }
  .cards { grid-template-columns: 1fr; gap: 14px; }
  .card, .value-item { padding: 22px 18px; }
  .business-intro-product { grid-template-columns: 1fr; gap: 24px; padding: 24px 18px; }
  .business-intro-product-copy { order: 1; }
  .business-intro-product img { order: 0; }
  .business-intro-band {
    min-height: 390px;
    align-items: end;
    padding: 30px 18px;
    background:
      linear-gradient(0deg, rgba(17,62,83,.98) 0%, rgba(17,62,83,.82) 58%, rgba(17,62,83,.28) 100%),
      url("../assets/images/business-introduction-2026-07/business-network-background.webp") center / cover no-repeat;
  }
  .business-intro-actions { display: grid; }
  .business-intro-actions .btn-outline { margin: 0; }
  .step { flex-direction: column; padding: 22px 18px; }
  .step-num { width: 46px; height: 46px; font-size: 1.2rem; }
  .faq-notice { margin-bottom: 34px; padding: 18px 16px; }
  .faq-group { margin-bottom: 38px; }
  .faq-group h2 { font-size: 1.35rem; }
  summary { min-height: 64px; padding: 17px 48px 17px 16px; font-size: 1rem; }
  summary::after { right: 18px; }
  details .answer { padding: 0 16px 18px; }
  footer { padding: 34px 0 calc(34px + env(safe-area-inset-bottom)); }
  footer .container { display: grid; gap: 22px; }
  .studio-news-backdrop {
    align-items: end;
    padding: 0;
  }
  .studio-news-dialog {
    width: 100%;
    max-height: 88vh;
    max-height: 88dvh;
  }
  .studio-news-head { padding: 24px 58px 18px 18px; }
  .studio-news-head h2 { font-size: 1.35rem; }
  .studio-news-list { padding: 16px 18px; }
  .studio-news-item { padding: 15px 16px; }
  .studio-news-actions {
    grid-template-columns: 1fr;
    padding: 0 18px calc(18px + env(safe-area-inset-bottom));
  }

  .tutor-widget { right: 12px; bottom: calc(12px + env(safe-area-inset-bottom)); }
  .tutor-float-button { min-height: 54px; padding-right: 16px; }
  .tutor-float-icon { width: 38px; height: 38px; }
  .tutor-widget.open {
    inset: 0;
    display: flex;
    align-items: flex-end;
    padding-top: env(safe-area-inset-top);
    background: rgba(17, 62, 83, .18);
  }
  .tutor-widget.open .tutor-float-button { display: none; }
  .tutor-widget-panel {
    width: 100vw;
    height: 88vh;
    height: 88dvh;
    max-height: 760px;
    margin: 0;
    border-right: 0;
    border-bottom: 0;
    border-left: 0;
    border-radius: 10px 10px 0 0;
    padding-bottom: env(safe-area-inset-bottom);
  }
  .tutor-widget-head { min-height: 64px; padding: 10px 12px 10px 16px; }
  .tutor-widget-head strong { font-size: 1rem; }
  .tutor-widget-hide { width: 44px; height: 44px; flex-basis: 44px; }
  .tutor-widget-log { min-height: 0; padding: 16px 12px 8px; overscroll-behavior: contain; }
  .tutor-widget-bubble { max-width: 92%; padding: 11px 12px; font-size: .9rem; }
  .tutor-widget-suggestions { max-height: 106px; padding: 8px 10px; }
  .tutor-widget-suggestions button { min-height: 40px; text-align: left; }
  .tutor-widget-form { gap: 7px; padding: 9px 10px; }
  .tutor-widget-form textarea { min-height: 46px; font-size: 16px; }
  .tutor-widget-form button { width: 66px; min-height: 46px; }
  .tutor-widget-foot { padding: 7px 10px; }
  html.tutor-widget-open, html.tutor-widget-open body { overflow: hidden; }
}

@media (max-width: 860px) {
  .nav { gap: 10px; padding: 10px 14px 8px; }
  .logo { gap: 7px; }
  .logo img { width: 132px; }
  .logo span { font-size: .66rem; letter-spacing: 1.5px; }
  .logo::after { min-height: 20px; padding: 2px 6px; font-size: .52rem; }
  .nav-tools { width:auto; justify-content:flex-end; gap:6px; }
  .font-toggle { min-height:44px; width:44px; padding:4px; font-size:.76rem; }
  .font-toggle-icon { width:34px; height:34px; flex-basis:34px; }
  .studio-shortcut { min-height:44px; padding:3px 9px 3px 3px; border-radius:24px; }
  .studio-shortcut-icon, .studio-shortcut-icon img { width:36px; height:36px; }
  .studio-shortcut-icon { flex-basis:36px; }
  .studio-shortcut-label { display:grid; }
  .studio-shortcut-label strong { font-size:.68rem; }
  .account-label { display:none; }
  .account-trigger { padding-right:9px; }
  .nav-links {
    order: 3;
    position: relative;
    width: 100%;
    flex-wrap: nowrap;
    gap: 2px;
    overflow: visible;
    padding: 2px 0 4px;
  }
  .nav-links li { flex: 0 0 auto; scroll-snap-align: start; }
  .nav-links a { min-height: 42px; display: flex; align-items: center; padding: 8px 12px; white-space: nowrap; }
  .nav-has-submenu { position: static; }
  .nav-has-submenu:not(.submenu-open) .nav-submenu {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-4px);
  }
  .nav-submenu {
    top: calc(100% + 4px);
    right: 0;
    width: 100%;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .nav-links .nav-submenu li { min-width: 0; }
  .nav-links .nav-submenu li:first-child { grid-column: 1 / -1; }
  .nav-links .nav-submenu a { white-space: normal; }
}

@media (max-width: 480px) {
  .nav-submenu {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}