/* 한국사 노트 홈페이지 — 앱과 같은 한지·단청·먹색 톤 */
:root {
  --hanji: #F7F3EA;
  --hanji-deep: #EFE7D6;
  --card: #FFFDF8;
  --line: #E6DCC9;
  --ink: #2A2420;
  --ink-soft: #6B6157;
  --danchung: #A63D2A;
  --danchung-soft: #F3E1DA;
  --meok: #2B2520;
  --meok-deep: #1E1915;
  --on-dark: #FFFFFF;
  --on-dark-soft: rgba(255, 255, 255, 0.72);
  --serif: "Noto Serif KR", "Nanum Myeongjo", serif;
  --sans: "Noto Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  --radius: 20px;
  --shadow: 0 18px 40px rgba(43, 37, 32, 0.14);
  --max: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--hanji);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  word-break: keep-all;
  overflow-wrap: break-word;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--serif); font-weight: 700; line-height: 1.3; margin: 0; letter-spacing: -0.01em; }
p { margin: 0; }

.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .wrap { padding: 0 32px; } }

/* 단색 아이콘(앱의 꼬리표 아이콘)을 원하는 색으로 칠한다 */
.icon {
  display: inline-block;
  width: 28px; height: 28px;
  background-color: var(--danchung);
  -webkit-mask-position: center; mask-position: center;
  -webkit-mask-size: contain; mask-size: contain;
  -webkit-mask-repeat: no-repeat; mask-repeat: no-repeat;
  flex: none;
}

/* ── 머리 ───────────────────────── */
.top {
  position: sticky; top: 0; z-index: 20;
  background: rgba(43, 37, 32, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: var(--on-dark);
}
.top .wrap { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 12px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-family: var(--serif); font-weight: 700; font-size: 18px; }
.brand img { width: 34px; height: 34px; border-radius: 9px; }
.top nav { display: flex; align-items: center; gap: 22px; font-size: 15px; }
.top nav a.link { text-decoration: none; color: var(--on-dark-soft); }
.top nav a.link:hover { color: var(--on-dark); }
@media (max-width: 719px) { .top nav a.link { display: none; } }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  text-decoration: none; font-weight: 700; border-radius: 999px;
  padding: 14px 26px; font-size: 16px; line-height: 1;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--danchung); color: var(--on-dark); box-shadow: 0 10px 24px rgba(166, 61, 42, 0.35); }
.btn-primary:hover { background: #B8462F; }
.btn-small { padding: 10px 16px; font-size: 14px; }
.btn svg { width: 20px; height: 20px; flex: none; }

/* ── 첫 화면 ───────────────────── */
.hero {
  position: relative; overflow: hidden;
  background: radial-gradient(120% 90% at 85% 10%, #3A302A 0%, var(--meok) 45%, var(--meok-deep) 100%);
  color: var(--on-dark);
  padding: 56px 0 0;
}
.hero::before {
  content: ""; position: absolute; right: -40px; top: -10px;
  width: min(720px, 90vw); height: 260px;
  background: url("../images/pattern.webp") right top / contain no-repeat;
  opacity: 0.22; pointer-events: none;
}
.hero .wrap { position: relative; display: grid; gap: 40px; align-items: end; }
@media (min-width: 900px) { .hero .wrap { grid-template-columns: 1.05fr 1fr; padding-top: 24px; } }
.hero-copy { padding-bottom: 8px; }
@media (min-width: 900px) { .hero-copy { padding-bottom: 96px; } }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 14px; font-weight: 700; color: #F1B7A6;
  background: rgba(166, 61, 42, 0.22); border: 1px solid rgba(241, 183, 166, 0.3);
  padding: 6px 14px; border-radius: 999px; margin-bottom: 20px;
}
.hero h1 { font-size: clamp(32px, 6.4vw, 56px); margin-bottom: 18px; }
.hero h1 em { font-style: normal; color: #F09A82; }
.hero .lead { font-size: clamp(16px, 2.2vw, 19px); color: var(--on-dark-soft); max-width: 30em; margin-bottom: 30px; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 20px; }
.badges { display: flex; flex-wrap: wrap; gap: 8px 16px; margin-top: 26px; font-size: 14px; color: var(--on-dark-soft); padding: 0; list-style: none; }
.badges li { display: flex; align-items: center; gap: 6px; }
.badges li::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: #F09A82; }

.phones { position: relative; height: 430px; }
@media (min-width: 900px) { .phones { height: 560px; } }
/* 휴대폰은 위쪽 기준으로 두고, 아래쪽은 첫 화면 경계에서 잘리게 한다 */
.phone {
  position: absolute; top: 10px;
  width: 230px; border-radius: 34px; padding: 8px;
  background: #0F0C0A; box-shadow: 0 30px 60px rgba(0, 0, 0, 0.45);
}
.phone img { border-radius: 27px; }
.phone.front { left: 50%; transform: translateX(-62%); z-index: 2; }
.phone.back { left: 50%; top: 60px; transform: translateX(-2%) rotate(6deg); opacity: 0.95; }
@media (min-width: 900px) {
  .phone { width: 270px; }
  .phone.front { transform: translateX(-70%); }
  .phone.back { transform: translateX(4%) rotate(6deg); }
}

/* ── 공통 구역 ─────────────────── */
section { padding: 80px 0; scroll-margin-top: 60px; }
@media (max-width: 719px) { section { padding: 60px 0; } }
.section-head { max-width: 640px; margin-bottom: 36px; }
.section-head .kicker { color: var(--danchung); font-weight: 700; font-size: 14px; letter-spacing: 0.04em; margin-bottom: 10px; }
.section-head h2 { font-size: clamp(26px, 4.4vw, 38px); margin-bottom: 12px; }
.section-head p { color: var(--ink-soft); }

/* ── 질문 체험 ─────────────────── */
.ask { background: var(--hanji); }
.ask-grid { display: grid; gap: 14px; }
@media (min-width: 720px) { .ask-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1000px) { .ask-grid { grid-template-columns: 1fr 1fr 1fr; } }
.q {
  text-align: left; font: inherit; color: inherit; cursor: pointer;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px 22px; display: flex; flex-direction: column; gap: 10px;
  transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
  width: 100%;
}
.q:hover { border-color: #D7C6AB; box-shadow: 0 10px 26px rgba(43, 37, 32, 0.08); transform: translateY(-2px); }
.q:focus-visible { outline: 3px solid rgba(166, 61, 42, 0.35); outline-offset: 2px; }
.q-tag { display: flex; align-items: center; gap: 6px; color: var(--danchung); font-size: 13px; font-weight: 700; }
.q-tag .icon { width: 18px; height: 18px; }
.q-text { font-family: var(--serif); font-weight: 700; font-size: 18px; line-height: 1.45; }
.q-more { font-size: 14px; color: var(--ink-soft); display: flex; align-items: center; gap: 6px; }
.q-more::after { content: "＋"; font-weight: 700; color: var(--danchung); transition: transform .2s ease; }
.q[aria-expanded="true"] .q-more::after { transform: rotate(45deg); }
.q-answer { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .3s ease; }
.q[aria-expanded="true"] .q-answer { grid-template-rows: 1fr; }
.q-answer > div { overflow: hidden; }
.q-answer .card-name { margin-top: 4px; font-weight: 700; color: var(--meok); }
.q-answer .card-summary {
  margin-top: 8px; background: var(--meok); color: var(--on-dark);
  border-radius: 14px; padding: 14px 16px; font-weight: 700; line-height: 1.5;
}
.q-answer .card-body { margin-top: 10px; font-size: 15px; color: var(--ink-soft); }

/* ── 기능 ───────────────────────── */
.features { background: var(--card); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.feature-grid { display: grid; gap: 16px; }
@media (min-width: 640px) { .feature-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1000px) { .feature-grid { grid-template-columns: repeat(3, 1fr); } }
.feature {
  background: var(--hanji); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 24px;
}
.feature .icon-wrap {
  width: 52px; height: 52px; border-radius: 16px; background: var(--danchung-soft);
  display: flex; align-items: center; justify-content: center; margin-bottom: 18px;
}
.feature h3 { font-size: 20px; margin-bottom: 8px; }
.feature p { color: var(--ink-soft); font-size: 15px; }
.feature .example {
  display: inline-block; margin-top: 12px; font-size: 14px; font-weight: 700; color: var(--danchung);
  background: var(--card); border: 1px dashed #D9B9AE; border-radius: 10px; padding: 4px 10px;
}

/* ── 시대 띠 ───────────────────── */
.eras { background: var(--hanji); }
.era-row {
  display: grid; grid-auto-flow: column; grid-auto-columns: minmax(220px, 1fr);
  gap: 14px; overflow-x: auto; padding-bottom: 10px;
  scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}
.era {
  scroll-snap-align: start; border-radius: var(--radius); overflow: hidden;
  background: var(--card); border: 1px solid var(--line);
}
.era img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.era div { padding: 14px 16px 16px; }
.era .range { color: var(--danchung); font-size: 13px; font-weight: 700; }
.era h3 { font-size: 20px; margin: 2px 0 4px; }
.era p { font-size: 14px; color: var(--ink-soft); line-height: 1.55; }

/* ── 작품 속 역사 ─────────────── */
.works { background: var(--meok); color: var(--on-dark); position: relative; overflow: hidden; }
.works::before {
  content: ""; position: absolute; right: 0; top: 0; width: 55%; height: 100%;
  background: url("../images/era_joseon.webp") center / cover no-repeat;
  opacity: 0.12; -webkit-mask-image: linear-gradient(to left, #000 20%, transparent);
  mask-image: linear-gradient(to left, #000 20%, transparent);
}
.works .wrap { position: relative; }
.works .section-head .kicker { color: #F09A82; }
.works .section-head p { color: var(--on-dark-soft); }
.work-list { display: flex; flex-wrap: wrap; gap: 10px; list-style: none; padding: 0; margin: 0; }
.work-list li {
  display: flex; align-items: center; gap: 8px;
  background: rgba(255, 255, 255, 0.08); border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px; padding: 8px 16px; font-size: 15px;
}
.work-list .icon { width: 18px; height: 18px; background-color: #F09A82; }
.work-list small { color: var(--on-dark-soft); font-size: 13px; }
.works .note { margin-top: 22px; font-size: 13px; color: var(--on-dark-soft); }

/* ── 화면 구경 ─────────────────── */
.screens { background: var(--hanji); }
.shot-row {
  display: grid; grid-auto-flow: column; grid-auto-columns: 220px; gap: 22px;
  overflow-x: auto; padding: 6px 2px 18px; scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch; scrollbar-width: thin;
}
@media (min-width: 1000px) { .shot-row { grid-auto-columns: 1fr; overflow: visible; } }
.shot { scroll-snap-align: start; margin: 0; }
.shot .frame { border-radius: 28px; padding: 7px; background: var(--meok); box-shadow: var(--shadow); }
.shot img { border-radius: 22px; }
.shot figcaption { text-align: center; margin-top: 14px; font-weight: 700; font-size: 15px; }
.shot figcaption span { display: block; font-weight: 400; font-size: 13px; color: var(--ink-soft); }

/* ── 숫자 ───────────────────────── */
.numbers { padding: 0; }
.numbers .wrap { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; padding: 0; }
@media (min-width: 720px) { .numbers .wrap { grid-template-columns: repeat(4, 1fr); } }
.numbers .num { background: var(--card); padding: 26px 16px; text-align: center; }
.numbers strong { display: block; font-family: var(--serif); font-size: clamp(28px, 5vw, 40px); color: var(--danchung); line-height: 1.2; }
.numbers span { font-size: 14px; color: var(--ink-soft); }
.numbers-outer { padding: 0 16px; margin: -36px auto 0; max-width: calc(var(--max) - 32px); position: relative; z-index: 3; }
@media (min-width: 720px) { .numbers-outer { padding: 0 32px; max-width: var(--max); } }

/* ── 마무리 ───────────────────── */
.cta { text-align: center; background: var(--hanji-deep); position: relative; overflow: hidden; }
.cta img.scroll { width: 160px; margin: 0 auto 18px; }
.cta h2 { font-size: clamp(26px, 4.6vw, 40px); margin-bottom: 12px; }
.cta p { color: var(--ink-soft); margin-bottom: 28px; }

footer { background: var(--meok-deep); color: var(--on-dark-soft); font-size: 14px; padding: 36px 0 44px; }
footer .wrap { display: grid; gap: 10px; }
footer .brand { color: var(--on-dark); font-size: 16px; }
footer .brand img { width: 28px; height: 28px; }
footer a { color: var(--on-dark); }

/* ── 개인정보처리방침 ─────────── */
.policy-top { background: var(--meok); color: var(--on-dark); padding: 44px 0 40px; position: relative; overflow: hidden; }
.policy-top::before {
  content: ""; position: absolute; right: -40px; top: -10px; width: min(560px, 90vw); height: 200px;
  background: url("../images/pattern.webp") right top / contain no-repeat; opacity: 0.2;
}
.policy-top .wrap { position: relative; max-width: 820px; }
.policy-top .brand { margin-bottom: 22px; display: inline-flex; }
.policy-top h1 { font-size: clamp(28px, 5vw, 40px); margin-bottom: 10px; }
.policy-top p { color: var(--on-dark-soft); }
.policy { padding: 40px 0 72px; }
.policy .wrap { max-width: 820px; }
.policy .summary {
  background: var(--card); border: 1px solid var(--line); border-left: 5px solid var(--danchung);
  border-radius: 14px; padding: 20px 22px; margin-bottom: 36px;
}
.policy .summary strong { color: var(--danchung); }
.policy h2 { font-size: 21px; margin: 36px 0 12px; padding-top: 4px; }
.policy p, .policy li { color: #4A423B; }
.policy p + p { margin-top: 10px; }
.policy ul { padding-left: 20px; margin: 10px 0 0; }
.policy li + li { margin-top: 6px; }
.policy table { width: 100%; border-collapse: collapse; margin-top: 12px; font-size: 15px; background: var(--card); border-radius: 12px; overflow: hidden; }
.policy th, .policy td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; vertical-align: top; }
.policy th { background: var(--hanji-deep); font-weight: 700; width: 34%; }
.policy .signature { margin-top: 48px; padding-top: 20px; border-top: 1px solid var(--line); color: var(--ink-soft); font-size: 15px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn, .q, .q-answer, .q-more::after { transition: none; }
}

/* ── 언어 바꾸기 링크 ───────────────── */
.lang-switch {
  display: inline-flex; align-items: center;
  padding: 6px 12px; border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  color: var(--on-dark); text-decoration: none; font-size: 14px; line-height: 1;
}
.lang-switch:hover { background: rgba(255, 255, 255, 0.12); }
.policy-top .lang-switch { position: absolute; top: 0; right: 16px; }
@media (min-width: 720px) { .policy-top .lang-switch { right: 32px; } }
.policy .note { margin-top: 28px; color: var(--ink-soft); font-size: 14px; }

/* 좁은 화면: 영어 이름·버튼이 길어 머리 줄이 넘치지 않게 */
.top .btn, .lang-switch { white-space: nowrap; flex: none; }
.top .brand { min-width: 0; }
@media (max-width: 719px) {
  .top nav { gap: 10px; }
  .top .brand { font-size: 16px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .top .brand img { width: 30px; height: 30px; }
}