:root {
  --bg: #FAF7F4; --card: #ffffff; --ink: #1b2430; --soft: #5b6676; --line: #e6e9ef;
  --brand: #B8450A; --brand-deep: #9A3A08; --brand-tint: #FFF0E6; --navy: #1B1B26; --warn: #f59f00; --danger: #e03131;
  --r: 14px;
  font-family: Pretendard, -apple-system, BlinkMacSystemFont, 'Apple SD Gothic Neo', 'Malgun Gothic', 'Noto Sans KR', 'Segoe UI', Roboto, sans-serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); line-height: 1.6; word-break: keep-all; overflow-wrap: anywhere; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.small { font-size: 12px; }
[hidden] { display: none !important; }

/* 상단 */
header.top { background: #fff; border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 20; }
.nav { display: flex; align-items: center; gap: 28px; height: 64px; }
.logo { display: flex; align-items: center; gap: 8px; font-weight: 900; font-size: 22px; letter-spacing: -0.02em; }
.logo-mark { width: 32px; height: 32px; border-radius: 10px; background: #F76B1C; display: grid; place-items: center; color: #fff; font-size: 18px; }
.nav-links { display: flex; gap: 22px; font-weight: 600; color: var(--soft); font-size: 15px; }
.nav-links a:hover { color: var(--ink); }
.nav-right { margin-left: auto; display: flex; align-items: center; gap: 12px; font-size: 13px; color: var(--soft); }
.lang { border: 1px solid var(--line); border-radius: 999px; padding: 5px 12px; font-weight: 700; color: var(--ink); }
.lang:hover { border-color: var(--brand); }
.pill { display: inline-flex; align-items: center; gap: 6px; background: var(--brand-tint); color: var(--brand-deep); font-weight: 700; padding: 6px 12px; border-radius: 999px; font-size: 13px; }

/* 히어로 */
.hero { background: linear-gradient(180deg, #ffffff 0%, var(--bg) 100%); padding: 56px 0 28px; text-align: center; }
.hero h1 { font-size: 40px; line-height: 1.25; margin: 14px 0 10px; letter-spacing: -0.03em; }
.hero h1 em { font-style: normal; color: var(--brand); }
.hero p.lead { color: var(--soft); font-size: 17px; margin: 0 0 26px; }
.search { max-width: 640px; margin: 0 auto; display: flex; background: #fff; border: 2px solid var(--brand); border-radius: 16px; overflow: hidden; box-shadow: 0 10px 30px rgba(247, 107, 28, 0.12); }
.search input { flex: 1; min-width: 0; border: 0; padding: 18px 20px; font-size: 17px; outline: none; }
.search button { border: 0; background: var(--brand); color: #fff; font-weight: 800; font-size: 16px; padding: 0 26px; cursor: pointer; }
.no-result { color: var(--soft); margin-top: 12px; }
.symptoms { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin: 18px auto 0; max-width: 760px; }
.symptoms a { background: #fff; border: 1px solid var(--line); border-radius: 999px; padding: 8px 14px; font-size: 14px; font-weight: 600; }
.symptoms a:hover { border-color: var(--brand); color: var(--brand-deep); }
.trust { display: flex; justify-content: center; gap: 22px; flex-wrap: wrap; margin-top: 26px; color: var(--soft); font-size: 14px; }
.trust span::before { content: '✓'; color: var(--brand); font-weight: 900; margin-right: 6px; }

/* 섹션 */
section { padding: 30px 0; }
.sec-head { display: flex; align-items: end; justify-content: space-between; margin-bottom: 14px; }
.sec-head h2, .sec-h2 { font-size: 22px; margin: 0 0 14px; letter-spacing: -0.02em; }
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.cat-h { font-size: 17px; margin: 26px 0 10px; color: var(--soft); letter-spacing: -0.01em; }
.tool { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 18px; display: flex; flex-direction: column; gap: 8px; transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s; min-height: 150px; }
.tool:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(27, 36, 48, 0.08); border-color: #cfe9de; }
.ico { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; font-size: 22px; }
.tool h3 { margin: 4px 0 0; font-size: 17px; }
.tool p { margin: 0; font-size: 14px; color: var(--soft); }
.tag { align-self: flex-start; font-size: 12px; font-weight: 700; padding: 3px 8px; border-radius: 6px; background: #f1f3f5; color: var(--soft); margin-top: auto; }
.tag.hot { background: #fff4e0; color: #b86e00; }
.c1 { background: #FFF0E6; } .c2 { background: #e8f1ff; } .c3 { background: #fff1e6; } .c4 { background: #f3ecff; }
.c5 { background: #ffeef0; } .c6 { background: #eaf7fb; } .c7 { background: #fff8db; } .c8 { background: #eef1f4; }

.fix { display: grid; grid-template-columns: 1.2fr 1fr; gap: 14px; }
.fix-card { background: var(--navy); color: #fff; border-radius: var(--r); padding: 26px; }
.fix-card h3 { margin: 0 0 6px; font-size: 22px; }
.fix-card p { margin: 0 0 18px; color: #c8d1dc; }
.steps { display: flex; flex-direction: column; gap: 8px; }
.steps a { background: rgba(255, 255, 255, 0.08); border-radius: 12px; padding: 12px 14px; display: flex; justify-content: space-between; gap: 10px; font-weight: 600; }
.steps a:hover { background: rgba(255, 255, 255, 0.14); }
.guides { background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: 22px; }
.guides h3 { margin: 0 0 12px; font-size: 18px; }
.guide { display: flex; gap: 12px; padding: 12px 0; border-top: 1px solid var(--line); }
.guide:first-of-type { border-top: 0; }
.guide b { display: block; font-size: 15px; }
.guide span { font-size: 13px; color: var(--soft); }
.guide .n { flex: 0 0 auto; width: 28px; height: 28px; border-radius: 8px; background: var(--brand-tint); color: var(--brand-deep); font-weight: 800; display: grid; place-items: center; font-size: 13px; }
.promise { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.promise div { background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: 20px; }
.promise b { display: block; font-size: 16px; margin-bottom: 4px; }
.promise span { font-size: 14px; color: var(--soft); }

/* 광고: 버튼과 떨어진 곳에만 */
.ad-wrap { margin: 28px auto; max-width: 970px; text-align: center; }
.ad-label { display: block; font-size: 11px; color: #98a2b0; margin-bottom: 4px; }
.ad { min-height: 100px; border: 1px dashed #cdd3db; border-radius: 12px; display: grid; place-items: center; color: #98a2b0; font-size: 13px; background: #fbfcfd; }

/* 도구·글 페이지 */
.page { padding-top: 22px; padding-bottom: 20px; }
.crumb { font-size: 13px; color: var(--soft); margin-bottom: 8px; }
.crumb a:hover { color: var(--ink); }
.page-h1 { font-size: 32px; letter-spacing: -0.03em; margin: 4px 0 6px; line-height: 1.3; }
.page-intro { color: var(--soft); margin: 0 0 18px; font-size: 16px; }
.meta-line { font-size: 13px; color: var(--soft); margin: -8px 0 18px; }
.tool-root { background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: 22px; min-height: 260px; }
.loading { color: var(--soft); }
.info { max-width: 820px; }
.info h2 { font-size: 20px; margin: 26px 0 10px; }
.howto { padding-left: 22px; margin: 0; }
.howto li { margin: 6px 0; }
.faq { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 12px 16px; margin: 8px 0; }
.faq summary { font-weight: 700; cursor: pointer; }
.faq p { margin: 8px 0 0; color: var(--soft); }

/* 도구 공통 UI (도구 스크립트가 써요) */
.dropzone { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px; border: 2px dashed #b9d9cc; background: #f6fcf9; border-radius: 16px; padding: 34px 16px; text-align: center; cursor: pointer; transition: background 0.15s, border-color 0.15s; }
.dropzone.over, .dropzone:hover { background: var(--brand-tint); border-color: var(--brand); }
.dz-ico { font-size: 34px; }
.dz-hint { font-size: 13px; color: var(--soft); }
.dz-input { display: none; }
.dg-btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; border: 0; border-radius: 12px; padding: 12px 18px; font-weight: 800; cursor: pointer; background: var(--brand); color: #fff; min-height: 46px; }
.dg-btn:hover { background: var(--brand-deep); }
.dg-btn:disabled { opacity: 0.5; cursor: default; }
.dg-btn.secondary { background: var(--brand-tint); color: var(--brand-deep); }
.dg-btn.ghost { background: #f1f3f5; color: var(--ink); }
.dg-row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.dg-field { display: flex; flex-direction: column; gap: 6px; font-size: 14px; font-weight: 700; }
.dg-input, .dg-select, .dg-textarea { border: 1.5px solid var(--line); border-radius: 12px; padding: 10px 12px; background: #fff; font-weight: 400; min-height: 44px; }
.dg-input:focus, .dg-select:focus, .dg-textarea:focus { outline: none; border-color: var(--brand); }
.dg-seg { display: inline-flex; background: #f1f3f5; border-radius: 12px; padding: 4px; gap: 4px; flex-wrap: wrap; }
.dg-seg button { border: 0; background: transparent; border-radius: 9px; padding: 8px 14px; font-weight: 700; color: var(--soft); cursor: pointer; }
.dg-seg button.on { background: #fff; color: var(--ink); box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08); }
.dg-note { font-size: 13px; color: var(--soft); }
.dg-card { border: 1px solid var(--line); border-radius: 14px; padding: 14px; background: #fff; }
.dg-progress { height: 10px; background: #eef1f4; border-radius: 6px; overflow: hidden; }
.dg-progress i { display: block; height: 100%; width: 0; background: var(--brand); transition: width 0.2s; }
.dg-stat { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 10px; }
.dg-stat div { background: #f6f8fa; border-radius: 12px; padding: 12px; text-align: center; }
.dg-stat b { display: block; font-size: 24px; }
.dg-stat span { font-size: 12px; color: var(--soft); }
.dg-toast { position: fixed; left: 50%; bottom: 30px; transform: translateX(-50%); background: rgba(27, 36, 48, 0.94); color: #fff; padding: 10px 18px; border-radius: 999px; z-index: 99; font-size: 14px; }

/* 가이드 글 */
.article { max-width: 860px; }
.prose { background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: 26px 30px; font-size: 16.5px; line-height: 1.8; }
.prose h2 { font-size: 22px; margin: 32px 0 10px; letter-spacing: -0.02em; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { font-size: 18px; margin: 22px 0 8px; }
.prose p { margin: 10px 0; }
.prose ul, .prose ol { padding-left: 22px; }
.prose li { margin: 6px 0; }
.prose a { color: var(--brand-deep); text-decoration: underline; text-underline-offset: 3px; }
.prose code { background: #f1f3f5; border-radius: 6px; padding: 1px 6px; font-size: 0.92em; }
.prose pre { background: #1B1B26; color: #e9f0f7; border-radius: 12px; padding: 14px 16px; overflow-x: auto; }
.prose pre code { background: transparent; padding: 0; color: inherit; }
.prose blockquote { margin: 14px 0; padding: 10px 16px; border-left: 4px solid var(--brand); background: #f6fcf9; border-radius: 0 10px 10px 0; }
.table-wrap { overflow-x: auto; }
.prose table { border-collapse: collapse; width: 100%; font-size: 15px; margin: 12px 0; }
.prose th, .prose td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
.prose th { background: #f6f8fa; }
.callout { border-radius: 12px; padding: 6px 16px; margin: 14px 0; }
.callout.tip { background: var(--brand-tint); }
.callout.warn { background: #fff4e0; }
.callout.note { background: #e8f1ff; }
.guide-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.guide-card { display: flex; gap: 14px; background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: 18px; }
.guide-card:hover { border-color: #cfe9de; }
.guide-card .gi { font-size: 28px; }
.guide-card b { display: block; font-size: 17px; }
.guide-card span { font-size: 14px; color: var(--soft); }

footer { margin-top: 30px; background: #fff; border-top: 1px solid var(--line); padding: 26px 0 40px; font-size: 13px; color: var(--soft); }
footer .cols { display: flex; gap: 40px; flex-wrap: wrap; }
footer .cols > div { max-width: 360px; }
footer b { color: var(--ink); display: block; margin-bottom: 6px; }
footer a:hover { color: var(--ink); }

@media (max-width: 900px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
  .fix, .promise, .guide-list { grid-template-columns: 1fr; }
  .nav-links, .hide-sm { display: none; }
  .hero h1 { font-size: 30px; }
  .page-h1 { font-size: 26px; }
  .tool-root { padding: 16px; }
  .prose { padding: 20px 18px; }
}
@media (max-width: 460px) { .grid { grid-template-columns: 1fr; } }

/* 소리공방 전용 */
.hero { background: linear-gradient(180deg, #1B1B26 0%, #2a2230 100%); padding: 64px 0 36px; }
.hero h1, .hero p.lead, .hero .trust { color: #fff; } .hero p.lead, .hero .trust { opacity: .85; }
.hero h1 em { color: #FFB27A; }
.hero .pill { background: rgba(255,255,255,.12); color: #FFD9BD; }
.symptoms a { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.2); color: #fff; }
.symptoms a:hover { border-color: #FFB27A; color: #FFB27A; }
.logo-mark { border-radius: 8px; }
.sr-wave { width: 100%; height: 96px; background: #1B1B26; border-radius: 12px; display: block; }
.sr-time { font-variant-numeric: tabular-nums; }
@media (prefers-color-scheme: dark) { :root { --bg:#14131a; --card:#1e1d26; --ink:#f1ede8; --soft:#a8a2ad; --line:#34323e; --brand-tint:#3a2619; } header.top, footer { background:#1e1d26; } }

/* 모바일(360px~)·다크 보강 */
@media (max-width: 640px) {
  .wrap { padding: 0 14px; }
  .nav { gap: 10px; height: 54px; }
  .logo { font-size: 18px; } .logo-mark { width: 28px; height: 28px; }
  .nav-links { display: flex; gap: 12px; font-size: 13px; margin-left: auto; }
  .nav-right { display: none; }
  .hero { padding: 34px 0 18px; } .hero h1 { font-size: 27px; } .hero p.lead { font-size: 15px; }
  .search input { font-size: 15px; padding: 14px; } .search button { padding: 0 16px; }
  .page-h1 { font-size: 24px; } .page-intro { font-size: 15px; }
  .dg-btn { padding: 12px 14px; min-height: 48px; flex: 1 1 auto; }
  .dg-row { gap: 8px; } .dg-row > select, .dg-row > .dg-select, .dg-row > .dg-input { flex: 1 1 100%; max-width: 100%; }
  input[type=range] { width: 100%; min-width: 0; }
  .dropzone { padding: 22px 12px; }
  table { font-size: 13px; }
  .tu-note { font-size: 52px; } .mt-bpm { font-size: 56px; }
  .ed-ops { gap: 6px; } .ed-ops .dg-btn { flex: 1 1 44%; }
  .st-seg { grid-template-columns: 1fr !important; }
  .sr-wave, canvas { max-width: 100%; }
  pre { white-space: pre-wrap; word-break: break-all; }
}
@media (max-width: 380px) { .hero h1 { font-size: 24px; } .nav-links a:nth-child(3) { display: none; } .dg-btn { font-size: 14px; } }
@media (prefers-color-scheme: dark) {
  .dg-textarea, .dg-input, .dg-select, select, input[type=number], textarea { background: var(--card); color: var(--ink); border-color: var(--line); }
  .dg-card, .tool, .guide, .guide-card, .fix-card, .promise > div, .dropzone, .st-seg, .ed-li { background: var(--card); color: var(--ink); border-color: var(--line); }
  .dg-seg { background: #2a2832; } .dg-progress { background: #34323e; } .search { background: var(--card); }
  .search input { background: transparent; color: var(--ink); }
  .callout, .dg-note { color: var(--soft); } table { color: var(--ink); } th, td { border-color: var(--line); }
}

/* 접근성·법적 안내 보강 */
:focus-visible { outline: 3px solid #1B6FEB; outline-offset: 2px; }
.skip { position: absolute; left: -9999px; top: 0; background: #1B1B26; color: #fff; padding: 10px 14px; z-index: 100; border-radius: 0 0 8px 0; }
.skip:focus { left: 0; }
.notice { border: 1px solid var(--line); border-left: 4px solid var(--brand); background: var(--card); border-radius: 10px; padding: 10px 14px; margin: 12px 0; font-size: 14px; color: var(--ink); }
.notice b { display: block; margin-bottom: 4px; }
.notice ul { margin: 0; padding-left: 18px; } .notice li { margin: 2px 0; }
.hero em { color: #FFB27A; }