/* 파이 노드 회원 서비스 — 공통 스타일
   토큰 출처: ClaudeWork/design-system/DESIGN.md + pi-referral-landing/src/index.html
   🚨 색·여백을 즉흥 결정하지 말 것. 아래 변수만 쓴다. */

:root{
  --primary:#0066cc;
  --primary-focus:#0071e3;
  --primary-on-dark:#2997ff;
  --pi:#7b45e6;
  --gold:#f5b544;
  --ink:#1d1d1f;
  --body:#1d1d1f;
  --body-muted:#6e6e73;
  --divider-soft:#f0f0f0;
  --hairline:#e6e6ea;
  --canvas:#fff;
  --canvas-parchment:#f5f5f7;
  --surface-pearl:#fafafc;
  --night:#0b0b12;
  --warn-bg:#fff8e6;
  --warn-line:#e8c14a;
  --font:"SF Pro Text","SF Pro Display",-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Malgun Gothic",system-ui,sans-serif;
  --gutter:16px;
  --maxw:980px;
}

*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  font-family:var(--font);
  color:var(--body);
  background:var(--canvas);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--primary);text-decoration:none;}
a:hover{text-decoration:underline;}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter);}

/* ── 헤더 ── */
.site-head{
  border-bottom:1px solid var(--hairline);
  background:rgba(255,255,255,.88);
  backdrop-filter:saturate(180%) blur(12px);
  position:sticky;top:0;z-index:50;
}
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;height:56px;gap:12px;}
.brand{display:flex;align-items:center;gap:9px;font-weight:600;color:var(--ink);font-size:16px;letter-spacing:-.3px;}
.brand:hover{text-decoration:none;}
.brand .mark{
  width:26px;height:26px;border-radius:8px;background:var(--night);
  color:var(--gold);display:grid;place-items:center;font-size:15px;font-weight:700;
}
.nav{display:flex;align-items:center;gap:20px;font-size:14px;}
.nav a{color:var(--body-muted);}
.nav a:hover{color:var(--ink);text-decoration:none;}

.btn{
  display:inline-block;padding:9px 18px;border-radius:980px;
  background:var(--primary);color:#fff;font-size:14px;font-weight:500;
  border:0;cursor:pointer;
}
.btn:hover{background:var(--primary-focus);text-decoration:none;}
.btn.ghost{background:transparent;color:var(--primary);border:1px solid var(--primary);}
.btn.ghost:hover{background:rgba(0,102,204,.06);}
.btn.lg{padding:13px 28px;font-size:16px;}
.btn[disabled],.btn.off{background:var(--canvas-parchment);color:var(--body-muted);cursor:default;}
.btn.off:hover{background:var(--canvas-parchment);}

/* ── 히어로 ── */
.hero{padding:76px 0 56px;text-align:center;}
.hero h1{
  margin:0 0 16px;font-size:44px;font-weight:600;line-height:1.14;
  letter-spacing:-1px;color:var(--ink);
}
.hero p.lead{margin:0 auto 30px;max-width:560px;font-size:19px;color:var(--body-muted);line-height:1.55;}
.hero .cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;}

/* ── 섹션 ── */
.section{padding:56px 0;border-top:1px solid var(--divider-soft);}
.section h2{margin:0 0 8px;font-size:27px;font-weight:600;letter-spacing:-.5px;color:var(--ink);}
.section p.sub{margin:0 0 28px;color:var(--body-muted);font-size:16px;}

.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.card{
  background:var(--surface-pearl);border:1px solid var(--hairline);
  border-radius:16px;padding:22px 20px;
}
.card h3{margin:0 0 8px;font-size:17px;font-weight:600;color:var(--ink);}
.card p{margin:0;font-size:14px;color:var(--body-muted);line-height:1.65;}
.card .tag{
  display:inline-block;margin-bottom:10px;padding:3px 10px;border-radius:980px;
  font-size:11px;font-weight:600;background:var(--canvas-parchment);color:var(--body-muted);
}
.card .tag.soon{background:var(--warn-bg);color:#8a6a10;}

/* ── 공지 ── */
.notice-list{list-style:none;margin:0;padding:0;}
.notice-list li{border-bottom:1px solid var(--divider-soft);}
.notice-list li:first-child{border-top:1px solid var(--divider-soft);}
.notice-list a{display:flex;justify-content:space-between;gap:16px;padding:15px 2px;color:var(--ink);}
.notice-list a:hover{color:var(--primary);text-decoration:none;}
.notice-list .date{color:var(--body-muted);font-size:13px;white-space:nowrap;}
.empty{
  padding:36px 20px;text-align:center;color:var(--body-muted);font-size:15px;
  background:var(--surface-pearl);border:1px solid var(--hairline);border-radius:16px;
}

/* ── 안내 상자 ── */
.note{
  background:var(--warn-bg);border-left:3px solid var(--warn-line);
  padding:15px 18px;border-radius:0 10px 10px 0;font-size:14.5px;line-height:1.7;
}

/* ── 푸터 ── */
.site-foot{
  margin-top:20px;border-top:1px solid var(--hairline);
  background:var(--canvas-parchment);padding:28px 0 36px;
}
.site-foot .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;}
.site-foot,.site-foot a{font-size:13px;color:var(--body-muted);}
.foot-links{display:flex;gap:16px;flex-wrap:wrap;}

/* ── 공지·본문 ── */
.wrap.narrow{max-width:720px;}
.section.no-top{border-top:0;padding-top:40px;}
.page-head{padding:48px 0 8px;}
.page-head h1{margin:0 0 8px;font-size:34px;font-weight:600;letter-spacing:-.7px;color:var(--ink);}
.page-head .sub{margin:0;color:var(--body-muted);font-size:16px;}

.notice-list .t{display:flex;align-items:center;gap:10px;min-width:0;}
.notice-list .t > *:last-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.cat{
  display:inline-block;padding:2px 9px;border-radius:980px;flex:none;
  font-size:11.5px;font-weight:600;background:var(--canvas-parchment);color:var(--body-muted);
}

.crumb{margin:0 0 14px;font-size:13.5px;}
.art-title{margin:0 0 10px;font-size:30px;font-weight:600;letter-spacing:-.6px;line-height:1.3;color:var(--ink);}
.art-meta{margin:0 0 26px;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--body-muted);}
.art-body{
  white-space:pre-wrap;word-break:break-word;
  font-size:16px;line-height:1.85;color:var(--body);
  padding:22px 0 8px;border-top:1px solid var(--divider-soft);
}
.art-foot{margin-top:30px;padding-top:22px;border-top:1px solid var(--divider-soft);}

/* ── 알림 띠 ──
   🚨 저장 단추는 화면 아래, 알림은 맨 위에 뜬다.
      누른 사람 눈에 안 들어와서 「아무 일도 안 일어났다」고 느낀다.
      그래서 잠깐 눈에 띄게 만든다. */
.flash{
  margin:16px 0 0;padding:14px 18px;border-radius:12px;
  background:#eaf6ee;border:1px solid #9fd5b2;
  font-size:15px;font-weight:600;line-height:1.6;color:#1f6b3c;
  display:flex;align-items:center;gap:10px;
  animation:flashIn .45s cubic-bezier(.16,1,.3,1);
}
.flash::before{
  content:"✓";flex:none;width:24px;height:24px;border-radius:50%;
  background:#3fae6a;color:#fff;font-size:14px;font-weight:700;
  display:grid;place-items:center;
}
@keyframes flashIn{
  0%   {opacity:0;transform:translateY(-10px);}
  60%  {opacity:1;transform:translateY(2px);}
  100% {opacity:1;transform:none;}
}
@media (prefers-reduced-motion:reduce){ .flash{animation:none;} }

/* ── 입력 폼 ── */
.form{display:flex;flex-direction:column;gap:7px;margin-top:8px;}
.form label{margin-top:12px;font-size:13.5px;font-weight:600;color:var(--ink);}
.form input[type=text],.form input[type=password],.form textarea,.form select{
  width:100%;padding:11px 13px;font:inherit;font-size:15px;color:var(--body);
  background:var(--canvas);border:1px solid var(--hairline);border-radius:10px;
}
.form textarea{resize:vertical;line-height:1.7;min-height:220px;}
.form input:focus,.form textarea:focus,.form select:focus{
  outline:0;border-color:var(--primary);box-shadow:0 0 0 3px rgba(0,102,204,.12);
}
.form button{margin-top:18px;align-self:flex-start;}
.hint{margin-top:14px;font-size:13px;color:var(--body-muted);line-height:1.7;}

/* ── 관리 표 ── */
.row-between{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:18px;}
.tbl{width:100%;border-collapse:collapse;font-size:14.5px;}
.tbl th,.tbl td{padding:12px 10px;border-bottom:1px solid var(--divider-soft);text-align:left;vertical-align:middle;}
.tbl th{font-size:12.5px;font-weight:600;color:var(--body-muted);border-bottom:1px solid var(--hairline);}
.tbl tr:hover td{background:var(--surface-pearl);}
.nowrap{white-space:nowrap;}
.muted{color:var(--body-muted);}
.pill{display:inline-block;padding:3px 10px;border-radius:980px;font-size:11.5px;font-weight:600;background:var(--canvas-parchment);color:var(--body-muted);}
.pill.on{background:rgba(0,102,204,.1);color:var(--primary);}
.btn.sm{padding:6px 13px;font-size:13px;}

.panel{
  margin-top:26px;padding:18px 20px;border:1px solid var(--hairline);
  border-radius:14px;background:var(--surface-pearl);
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:14px;
}
.panel-acts{display:flex;gap:9px;align-items:center;flex-wrap:wrap;}

/* ── 소셜 로그인 단추 ── */
.sns{display:flex;flex-direction:column;gap:10px;margin:8px 0 22px;}
.sns-btn{
  display:flex;align-items:center;gap:12px;padding:15px 20px;border-radius:14px;
  font-size:16px;font-weight:600;text-decoration:none;border:1px solid transparent;
  transition:transform .12s ease,box-shadow .2s ease,background .2s ease;
}
.sns-btn:hover{text-decoration:none;transform:translateY(-1px);}
.sns-btn .mk{
  width:26px;height:26px;border-radius:8px;display:grid;place-items:center;
  font-size:14px;font-weight:700;flex:none;
}
.sns-btn.naver{background:#03C75A;color:#fff;}
.sns-btn.naver .mk{background:rgba(255,255,255,.22);color:#fff;}
.sns-btn.naver:hover{box-shadow:0 8px 22px rgba(3,199,90,.32);}
.sns-btn.kakao{background:#FEE500;color:#191600;}
.sns-btn.kakao .mk{background:rgba(0,0,0,.12);color:#191600;}
.sns-btn.kakao:hover{box-shadow:0 8px 22px rgba(254,229,0,.4);}
.sns-btn.google{background:#fff;color:#1f1f1f;border-color:var(--hairline);}
.sns-btn.google .mk{background:#4285F4;color:#fff;}
.sns-btn.google:hover{box-shadow:0 8px 22px rgba(0,0,0,.09);}
.sns-btn.off{background:var(--canvas-parchment);color:var(--body-muted);cursor:default;}
.sns-btn.off .mk{background:#dcdce2;color:#8a8a93;}
.sns-btn.off:hover{transform:none;box-shadow:none;}

/* ── 상태 안내 상자 ── */
.state{padding:16px 19px;border-radius:14px;margin:4px 0 22px;font-size:15px;line-height:1.7;}
.state.ok{background:#f2faf4;border:1px solid #cfe9d7;}
.state.wait{background:var(--warn-bg);border:1px solid var(--warn-line);}
.state.no{background:#fff0f0;border:1px solid #f3cccc;}

/* ── 노드 상태 화면 ── */
.state .why{
  margin-top:10px;padding-top:10px;border-top:1px solid rgba(0,0,0,.08);
  font-size:14px;line-height:1.7;
}
h3.blk{margin:34px 0 10px;font-size:17px;font-weight:700;color:var(--ink);letter-spacing:-.3px;}

.bars{margin-bottom:6px;}
.bar{
  display:flex;height:16px;border-radius:999px;overflow:hidden;
  background:var(--canvas-parchment);border:1px solid var(--hairline);
}
.bar .seg{display:block;height:100%;}
.bar .seg.up{background:#3fae6a;}
.bar .seg.down{background:#d64545;}
.bar .seg.unk{background:#d5d5dc;}
.legend{display:flex;flex-wrap:wrap;gap:14px;margin-top:10px;font-size:13.5px;color:var(--body-muted);}
.legend i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:6px;vertical-align:-1px;}
.legend i.up{background:#3fae6a;} .legend i.down{background:#d64545;} .legend i.unk{background:#d5d5dc;}
.legend b{color:var(--ink);}

.form.inline{flex-direction:row;align-items:center;gap:9px;margin-top:4px;}
.form.inline input[type=text]{max-width:180px;}
.form.inline button{margin-top:0;}

.dl{display:flex;flex-wrap:wrap;gap:9px;margin:10px 0 4px;align-items:center;}

/* ── 설치 방법 두 가지 ── */
.way{
  border:1px solid var(--hairline);border-radius:16px;
  padding:20px 22px;margin:14px 0;background:var(--canvas);
}
.way-t{
  display:flex;align-items:center;gap:9px;flex-wrap:wrap;
  font-size:16px;font-weight:700;color:var(--ink);margin-bottom:12px;
}
.way-t .n{
  width:24px;height:24px;border-radius:50%;background:var(--ink);color:#fff;
  font-size:13px;display:grid;place-items:center;flex:none;
}
.way-t .tip{
  font-size:11.5px;font-weight:600;padding:3px 10px;border-radius:999px;
  background:#eaf6ee;color:#1f6b3c;
}
.codebox{
  background:var(--night);border-radius:14px;padding:18px 20px;margin-bottom:14px;text-align:center;
}
.codebox .code{
  font-family:ui-monospace,Menlo,Consolas,monospace;
  font-size:34px;font-weight:700;letter-spacing:6px;color:var(--gold);line-height:1.2;
}
.codebox .muted{color:#8f8aa3;font-size:12.5px;margin-top:6px;}
.codebox .muted b{color:#c7c3d4;}
.cmd{
  background:#0d0d14;color:#d2d2d7;border-radius:10px;padding:13px 15px;
  font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12.5px;
  line-height:1.6;word-break:break-all;user-select:all;
}

/* ── 모바일 ── */
@media (max-width:760px){
  .page-head h1{font-size:26px;}
  .legend{gap:9px;font-size:12.5px;}
  .dl .btn{flex:1 1 auto;text-align:center;}
  .art-title{font-size:23px;}
  .art-body{font-size:15.5px;}
  .tbl{font-size:13.5px;}
  .tbl th:nth-child(4),.tbl td:nth-child(4){display:none;}
  .panel{flex-direction:column;align-items:flex-start;}
  .hero{padding:52px 0 40px;}
  .hero h1{font-size:32px;letter-spacing:-.6px;}
  .hero p.lead{font-size:17px;}
  .section{padding:40px 0;}
  .section h2{font-size:22px;}
  .cards{grid-template-columns:1fr;}
  .nav{gap:14px;font-size:13px;}
  .nav .hide-sm{display:none;}
  .site-foot .wrap{flex-direction:column;}
}