/* 오픈포스 · 포스 영수증 컨셉 */
:root {
  --paper: #F5F5F1;
  --card: #FFFFFF;
  --ink: #15181C;
  --muted: #555B63;
  --line: #DDDED8;
  --line2: #C9CAC3;
  --accent: #0A6B4E;
  --accent-dark: #08573F;
  --accent-soft: #E6F0EC;
  --dark-muted: #C9CCC6;
  --mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: 'IBM Plex Sans KR', system-ui, -apple-system, 'Apple SD Gothic Neo', 'Malgun Gothic', sans-serif;
  --radius: 12px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  word-break: keep-all;
  overflow-wrap: break-word;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3 { line-height: 1.3; }
.mono { font-family: var(--mono); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
#consult { scroll-margin-top: 16px; }

.skip { position: absolute; left: -9999px; top: 8px; background: var(--ink); color: #fff; padding: 8px 12px; z-index: 100; border-radius: 8px; }
.skip:focus { left: 8px; }

.wrap { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ── 버튼 ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 52px; padding: 12px 22px; border-radius: 10px;
  font: inherit; font-weight: 600; font-size: 17px; text-decoration: none; cursor: pointer;
  border: 1px solid transparent; transition: background-color .15s, color .15s;
}
.btn-sm { min-height: 44px; padding: 8px 16px; font-size: 15px; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); color: #fff; }
.btn-line { border-color: var(--ink); color: var(--ink); background: transparent; }
.btn-line:hover { background: var(--ink); color: #fff; }
.btn-white { background: #fff; color: var(--accent); font-weight: 700; }
.btn-ghost { border-color: #fff; color: #fff; }
.btn-ghost:hover { background: #fff; color: var(--ink); }
.btn-block { width: 100%; min-height: 56px; border: 0; }

/* ── 헤더 ── */
.hd { background: var(--card); border-bottom: 1px solid var(--line); }
.hd-top { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 12px; padding-right: 8px; }
.hd-brand { display: flex; align-items: center; gap: 10px; min-width: 0; }
.brand { display: flex; align-items: center; gap: 7px; text-decoration: none; font-weight: 700; font-size: 19px; letter-spacing: -0.02em; }
.logo-mark { color: var(--accent); }
.chip { display: inline-flex; align-items: center; gap: 3px; padding: 3px 10px 3px 7px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); font-size: 13px; font-weight: 600; white-space: nowrap; }
.hd-actions { display: flex; align-items: center; gap: 12px; }
.hd-tel { display: none; align-items: center; gap: 8px; text-decoration: none; font-family: var(--mono); font-weight: 600; font-size: 17px; }
.hd-tel-icon { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; border-radius: 10px; }
.hd-cta { display: none; }
.tabs { display: flex; gap: 2px; overflow-x: auto; white-space: nowrap; scrollbar-width: none; padding: 0 8px; }
.tabs::-webkit-scrollbar { display: none; }
.tab { flex-shrink: 0; display: block; padding: 12px 12px 9px; font-size: 15px; font-weight: 500; color: var(--muted); text-decoration: none; border-bottom: 3px solid transparent; }
.tab:hover { color: var(--ink); }
.tab[aria-current="page"] { color: var(--ink); font-weight: 700; border-bottom-color: var(--accent); }

/* ── 히어로 ── */
.hero { display: grid; gap: 28px; padding-top: 28px; padding-bottom: 48px; }
.hero-slim { padding-bottom: 32px; }
.crumb { display: flex; flex-wrap: wrap; gap: 6px; font-family: var(--mono); font-size: 12px; color: var(--muted); letter-spacing: .02em; }
.crumb a { color: var(--muted); }
.h1 { margin: 10px 0 0; font-size: clamp(32px, 6vw, 52px); line-height: 1.2; letter-spacing: -0.03em; font-weight: 700; }
.h1-article { font-size: clamp(28px, 4.6vw, 42px); }
.lead { margin: 14px 0 0; font-size: 16px; color: var(--muted); max-width: 560px; }
.btns { display: flex; flex-direction: column; gap: 10px; margin-top: 24px; }
.steps-inline { display: none; list-style: none; margin: 36px 0 0; padding: 22px 0 0; border-top: 1px solid var(--line); gap: 8px 22px; flex-wrap: wrap; font-size: 15px; font-weight: 600; }
.steps-inline li { display: flex; align-items: center; gap: 8px; }
.steps-inline li + li::before { content: '→'; color: #8A9088; font-weight: 400; margin-right: 6px; }
.num { display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; width: 26px; height: 26px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); font-family: var(--mono); font-size: 13px; font-weight: 600; }

/* ── 영수증 안내표 ── */
.receipt-wrap { align-self: start; }
.receipt { background: var(--card); padding: 22px 20px 18px; box-shadow: 0 14px 34px rgba(21, 24, 28, 0.08); }
.rc-head { display: flex; justify-content: space-between; gap: 12px; font-family: var(--mono); font-size: 12px; color: var(--muted); letter-spacing: .04em; }
.rc-title { margin: 8px 0 10px; font-size: 18px; font-weight: 700; letter-spacing: -0.02em; }
.receipt dl { margin: 0; }
.rc-row { display: flex; justify-content: space-between; gap: 14px; padding: 10px 0; border-top: 1px dashed var(--line2); font-size: 14px; }
.rc-row dt { color: var(--muted); flex-shrink: 0; }
.rc-row dd { margin: 0; font-weight: 600; text-align: right; }
.rc-foot { display: flex; justify-content: space-between; padding-top: 12px; border-top: 2px solid var(--ink); font-family: var(--mono); font-size: 12px; }
.zig { display: block; width: 100%; height: 8px; fill: var(--card); }

/* ── 섹션 ── */
.sec { padding: 0 0 48px; }
.sec-white { background: var(--card); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 44px 0; margin-bottom: 48px; }
.sec-tight { padding-bottom: 40px; }
.h2 { margin: 0; font-size: 23px; letter-spacing: -0.02em; }
.sub { margin: 6px 0 0; font-size: 15px; color: var(--muted); }
.sec-head { display: flex; justify-content: space-between; align-items: end; gap: 12px; }
.more { color: var(--accent); font-weight: 600; font-size: 14px; text-decoration: none; white-space: nowrap; }

/* 사례 카드 */
.cases { display: flex; gap: 12px; overflow-x: auto; padding: 16px 20px 4px; scroll-snap-type: x mandatory; scrollbar-width: none; }
.cases::-webkit-scrollbar { display: none; }
.case-card { flex-shrink: 0; width: 272px; scroll-snap-align: start; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; text-decoration: none; color: var(--ink); }
.case-card:hover { border-color: var(--line2); }
.ph { margin: 0; aspect-ratio: 16 / 10; background: #E9EAE5; overflow: hidden; }
.ph img { width: 100%; height: 100%; object-fit: cover; }
.ph-empty { display: flex; align-items: center; justify-content: center; background: repeating-linear-gradient(135deg, #E7E8E3 0 10px, #EFF0EC 10px 20px); font-family: var(--mono); font-size: 12px; color: var(--muted); }
.case-body { padding: 16px; }
.tag { display: inline-block; padding: 2px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); font-size: 12px; font-weight: 600; }
.case-title { margin-top: 10px; font-size: 16px; font-weight: 600; }
.case-memo { margin-top: 4px; font-size: 14px; color: var(--muted); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.cases-grid { max-width: 1200px; margin: 0 auto; }
.gallery { display: grid; gap: 12px; }
.gallery .ph { border-radius: var(--radius); aspect-ratio: 4 / 3; }

/* 주제 묶음 01~06 */
.groups { display: grid; gap: 14px; margin-top: 24px; }
.group { border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; background: var(--paper); }
.g-head { display: flex; align-items: baseline; gap: 10px; }
.g-num { font-family: var(--mono); font-size: 13px; font-weight: 600; color: var(--accent); }
.group h3 { margin: 0; font-size: 18px; letter-spacing: -0.02em; }
.group p { margin: 4px 0 10px; font-size: 14px; color: var(--muted); }
.g-links { list-style: none; margin: 0; padding: 0; }
.g-links li { border-top: 1px solid var(--line); }
.g-links a { display: flex; justify-content: space-between; align-items: center; gap: 12px; min-height: 46px; padding: 10px 0; text-decoration: none; font-size: 15px; }
.g-links a:hover span:first-child { text-decoration: underline; }
.arr { color: var(--accent); }
.group-cta { background: var(--accent); border-color: var(--accent); color: #fff; display: flex; flex-direction: column; justify-content: space-between; gap: 18px; }
.group-cta .g-num, .group-cta p { color: #fff; }
.group-cta h3 { display: inline; margin-left: 8px; }

/* 지역 정보 */
.two-col, .one-col { display: grid; gap: 40px; }
.h2-sm { font-size: 23px; }
.areas { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin-top: 16px; }
.area { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; }
.area-name { font-weight: 600; font-size: 15px; }
.area p { margin: 4px 0 0; font-size: 13px; color: var(--muted); }
.faq { margin-top: 8px; }
.faq details { border-top: 1px solid var(--line); padding: 14px 0; }
.faq summary { cursor: pointer; font-weight: 600; font-size: 16px; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq p { margin: 6px 0 0; font-size: 15px; color: var(--muted); }

/* 함께 쓰는 장비 · 장비 카드 */
.related, .devcards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin-top: 16px; }
.rel, .devcard { display: block; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; text-decoration: none; color: var(--ink); }
.devcard { background: var(--paper); }
.rel:hover, .devcard:hover { border-color: var(--accent); }
.rel-name { font-size: 15px; font-weight: 700; }
.rel p, .devcard p { margin: 4px 0 0; font-size: 13px; color: var(--muted); }
.rel-cta { display: block; margin-top: 10px; font-size: 13px; font-weight: 600; color: var(--accent); }

/* 지역 목록 */
.picker { margin-top: 28px; }
.picker-label { font-weight: 700; margin-bottom: 10px; }
.regions-main, .regions-more { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.regions-main a { display: inline-flex; align-items: center; min-height: 48px; padding: 10px 18px; border-radius: 10px; background: var(--card); border: 1px solid var(--line2); text-decoration: none; font-weight: 700; font-size: 16px; }
.regions-main a:hover { border-color: var(--accent); color: var(--accent); }
.regions-more a { display: inline-flex; align-items: center; min-height: 44px; padding: 8px 14px; border-radius: 999px; border: 1px solid var(--line); background: var(--card); text-decoration: none; font-size: 14px; color: var(--muted); }
.regions-more a:hover { color: var(--accent); border-color: var(--accent); }

/* 가이드 목록 */
.guide-list { list-style: none; margin: 16px 0 0; padding: 0; display: grid; gap: 10px; }
.guide-list a { display: block; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; text-decoration: none; }
.guide-list a:hover { border-color: var(--accent); }
.guide-list strong { display: block; font-size: 16px; }
.guide-list span { display: block; margin-top: 4px; font-size: 14px; color: var(--muted); }

/* 가이드 본문 */
.article { max-width: 760px; padding-top: 28px; padding-bottom: 48px; }
.meta { margin-top: 12px; font-size: 13px; color: var(--muted); }
.prose { margin-top: 28px; font-size: 17px; line-height: 1.8; }
.prose h2 { margin: 40px 0 10px; font-size: 22px; letter-spacing: -0.02em; }
.prose h3 { margin: 28px 0 8px; font-size: 18px; }
.prose p { margin: 0 0 16px; }
.prose ul, .prose ol { margin: 0 0 18px; padding-left: 22px; }
.prose li { margin: 4px 0; }
.prose a { color: var(--accent); font-weight: 600; }
.prose blockquote { margin: 0 0 18px; padding: 12px 16px; background: var(--card); border-radius: 8px; color: var(--muted); }
.article-devs { margin-top: 36px; padding-top: 20px; border-top: 1px solid var(--line); }
.ft-label { font-weight: 700; font-size: 14px; }

/* ── 상담 ── */
.consult { background: var(--ink); color: #fff; padding: 44px 0; }
.consult-grid { display: grid; gap: 28px; align-items: start; }
.eyebrow { font-family: var(--mono); font-size: 12px; color: #B8BDB5; letter-spacing: .06em; }
.consult-title { margin: 10px 0 0; font-size: 28px; line-height: 1.28; letter-spacing: -0.03em; }
.consult-sub { margin: 12px 0 0; color: var(--dark-muted); }
.steps { list-style: none; margin: 24px 0 0; padding: 0; display: grid; gap: 14px; }
.steps li { display: flex; gap: 12px; align-items: flex-start; }
.steps .num { background: #fff; color: var(--ink); width: 28px; height: 28px; }
.steps strong { display: block; font-size: 16px; }
.steps li > div span { display: block; font-size: 13px; color: var(--dark-muted); }
.consult-direct { display: flex; gap: 10px; margin-top: 24px; }
.consult-direct .btn { min-height: 48px; font-size: 16px; }

.form { background: var(--card); color: var(--ink); border-radius: 14px; padding: 22px 18px; display: grid; gap: 18px; }
.field { border: 0; margin: 0; padding: 0; min-width: 0; }
.field label, .field legend { display: block; font-size: 14px; font-weight: 600; margin-bottom: 6px; padding: 0; }
.field-row { display: flex; gap: 8px; }
.field-2 { display: grid; gap: 18px; }
.input { width: 100%; min-width: 0; min-height: 48px; padding: 12px; border: 1px solid var(--line2); border-radius: 8px; font: inherit; font-size: 16px; color: var(--ink); background: #fff; }
.input:focus { outline: 2px solid var(--accent); outline-offset: 0; border-color: var(--accent); }
textarea.input { resize: vertical; }
.input-fixed { width: 88px; flex-shrink: 0; font-weight: 600; background: var(--paper); }
.input-region { width: 46%; flex-shrink: 0; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.opt { position: relative; }
.opt input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.opt span { display: inline-flex; align-items: center; min-height: 44px; padding: 10px 14px; border-radius: 999px; border: 1px solid var(--line2); background: #fff; font-size: 14px; cursor: pointer; user-select: none; }
.opt input:checked + span { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.opt input:focus-visible + span { outline: 3px solid var(--accent); outline-offset: 2px; }
.agree { display: flex; gap: 10px; align-items: center; font-size: 14px; }
.agree input { width: 22px; height: 22px; margin: 0; accent-color: var(--accent); flex-shrink: 0; }
.agree a { color: var(--accent); }
.form-note { margin: -6px 0 0; font-size: 12px; color: var(--muted); }
.form-msg { margin: 0; font-size: 15px; font-weight: 600; }
.form-msg:empty { display: none; }
.form-msg.ok { color: var(--accent); }
.form-msg.err { color: #B42318; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* ── 푸터 · 하단 바 ── */
.ft { background: var(--ink); color: var(--dark-muted); border-top: 1px solid #2D3136; font-size: 13px; }
.ft-inner { display: grid; gap: 16px; padding-top: 28px; padding-bottom: 32px; }
.ft-brand { color: #fff; font-size: 17px; font-weight: 700; margin-bottom: 4px; }
.ft-links { display: flex; flex-wrap: wrap; gap: 6px 18px; }
.ft-links a { color: var(--dark-muted); }
.ft-links a.mono { color: #fff; }
.ft-regions .ft-label { color: #fff; margin-bottom: 6px; }
.ft-regions div:last-child { display: flex; flex-wrap: wrap; gap: 4px 12px; }
.ft-regions a { color: var(--dark-muted); }

.bbar { position: fixed; left: 0; right: 0; bottom: 0; z-index: 50; display: grid; grid-template-columns: 1fr 1fr 1.4fr; gap: 8px; padding: 10px 12px calc(10px + env(safe-area-inset-bottom)); background: #fff; border-top: 1px solid var(--line); box-shadow: 0 -6px 16px rgba(21, 24, 28, 0.06); }
.bbar a { display: flex; align-items: center; justify-content: center; gap: 6px; min-height: 50px; border-radius: 10px; border: 1px solid var(--line2); text-decoration: none; font-weight: 600; font-size: 15px; color: var(--ink); }
.bbar a.bbar-main { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 700; }
body.has-bbar { padding-bottom: calc(76px + env(safe-area-inset-bottom)); }

/* ── 태블릿 이상 ── */
@media (min-width: 640px) {
  .btns { flex-direction: row; flex-wrap: wrap; }
  .field-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .guide-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .devcards { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 900px) {
  .wrap { padding: 0 40px; }
  .hd-top { height: 72px; padding-right: 40px; }
  .brand { font-size: 21px; }
  .chip { font-size: 14px; }
  .hd-tel { display: flex; }
  .hd-tel-icon { display: none; }
  .hd-cta { display: inline-flex; }
  .tabs { padding: 0 32px; gap: 8px; }
  .tab { padding: 14px 14px 11px; font-size: 16px; }
  .hero { grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 64px; padding-top: 56px; padding-bottom: 88px; align-items: start; }
  .hero-slim { grid-template-columns: 1fr; padding-bottom: 48px; }
  .crumb { font-size: 13px; }
  .h1 { margin-top: 16px; }
  .lead { font-size: 18px; margin-top: 20px; }
  .btns { margin-top: 32px; }
  .steps-inline { display: flex; }
  .receipt { padding: 28px 28px 22px; }
  .rc-head { font-size: 13px; }
  .rc-title { font-size: 21px; margin: 12px 0 16px; }
  .rc-row { font-size: 15px; padding: 12px 0; }
  .rc-foot { font-size: 13px; }
  .zig { height: 10px; }
  .sec { padding-bottom: 96px; }
  .sec-white { padding: 88px 0; margin-bottom: 96px; }
  .h2 { font-size: 32px; }
  .h2-sm { font-size: 28px; }
  .sub { font-size: 16px; margin-top: 8px; }
  .more { font-size: 16px; }
  .cases { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; overflow: visible; max-width: 1200px; margin: 0 auto; padding: 32px 40px 0; }
  .case-card { width: auto; }
  .case-body { padding: 20px; }
  .case-title { font-size: 18px; }
  .case-memo { font-size: 15px; }
  .groups { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; margin-top: 40px; }
  .group { padding: 28px; }
  .group h3 { font-size: 21px; }
  .group p { font-size: 15px; margin: 6px 0 16px; }
  .two-col { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 56px; }
  .one-col { max-width: 760px; }
  .area { padding: 20px; }
  .area-name { font-size: 17px; }
  .area p { font-size: 14px; }
  .faq summary { font-size: 17px; }
  .related { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; margin-top: 24px; }
  .devcards { gap: 16px; margin-top: 32px; }
  .rel, .devcard { padding: 24px; }
  .rel-name { font-size: 18px; }
  .rel p, .devcard p { font-size: 14px; margin-top: 6px; }
  .rel-cta { font-size: 14px; margin-top: 16px; }
  .consult { padding: 88px 0; }
  .consult-grid { grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 64px; }
  .eyebrow { font-size: 13px; }
  .consult-title { font-size: 38px; margin-top: 12px; }
  .consult-sub { font-size: 17px; }
  .steps { margin-top: 36px; gap: 20px; }
  .steps .num { width: 32px; height: 32px; font-size: 14px; }
  .steps strong { font-size: 17px; }
  .steps li > div span { font-size: 14px; }
  .consult-direct { margin-top: 40px; }
  .form { padding: 32px; gap: 20px; border-radius: 16px; }
  .ft { font-size: 14px; }
  .ft-inner { grid-template-columns: 1fr auto; padding-top: 40px; padding-bottom: 48px; }
  .ft-regions { grid-column: 1 / -1; }
  .bbar { display: none; }
  body.has-bbar { padding-bottom: 0; }
  .article { padding-top: 56px; padding-bottom: 88px; }
}