:root {
  --bg: #0b0d11; --panel: #14171f; --panel2: #1a1e28; --line: #262b36;
  --ink: #e9ebf0; --muted: #9aa3b2; --dim: #6b7280;
  --acc: #6ee7b7; --acc2: #38bdf8; --accink: #04120c;
  --glow1: rgba(110,231,183,.16); --glow2: rgba(56,189,248,.14);
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: "Nanum Gothic", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  --serif: "Nanum Myeongjo", "Apple SD Gothic Neo", Batang, Georgia, serif;
  --square: "NanumSquare", "Nanum Gothic", "Apple SD Gothic Neo", sans-serif;
  --wrap: 920px;
  --shadow: 0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.18);
}
@media (prefers-color-scheme: light) {
  :root { --bg:#f7f8fa; --panel:#fff; --panel2:#eef1f6; --line:#e4e7ec; --ink:#131720; --muted:#556072; --dim:#8a93a3;
    --acc:#0d9f6e; --acc2:#0284c7; --accink:#fff; --glow1:rgba(13,159,110,.10); --glow2:rgba(2,132,199,.10);
    --shadow:0 1px 2px rgba(16,24,40,.06), 0 10px 30px rgba(16,24,40,.06); }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin:0; background:var(--bg); color:var(--ink); font-family:var(--sans); line-height:1.7;
  -webkit-font-smoothing:antialiased; font-size:16.5px; }
main { max-width:var(--wrap); margin:0 auto; padding:0 22px; }
a { color:var(--acc2); text-decoration:none; }
a:hover { text-decoration:underline; }
h1,h2,h3 { line-height:1.25; letter-spacing:-0.01em; font-family:var(--serif); }

/* nav */
.nav { position:sticky; top:0; z-index:9; backdrop-filter:blur(12px);
  background:color-mix(in srgb, var(--bg) 78%, transparent); border-bottom:1px solid var(--line);
  display:flex; align-items:center; justify-content:space-between; padding:14px 22px; max-width:var(--wrap); margin:0 auto; }
.brand { font-family:var(--square); font-weight:700; font-size:18px; color:var(--ink); letter-spacing:-.02em; }
.brand span { color:var(--dim); font-weight:400; }
.nav .links a { color:var(--muted); margin-left:20px; font-size:14.5px; }
.nav .links a:hover { color:var(--ink); text-decoration:none; }

/* hero */
.hero { position:relative; padding:88px 0 40px; }
.hero::before { content:""; position:absolute; inset:-120px -40% auto -40%; height:460px; z-index:-1;
  background:radial-gradient(60% 60% at 20% 30%, var(--glow1), transparent 70%),
             radial-gradient(50% 50% at 85% 15%, var(--glow2), transparent 70%);
  filter:blur(8px); pointer-events:none; }
.avail { display:inline-flex; align-items:center; gap:7px; font-size:13px; color:var(--acc); font-family:var(--square);
  border:1px solid color-mix(in srgb,var(--acc) 35%,var(--line)); background:color-mix(in srgb,var(--acc) 8%,transparent);
  padding:5px 12px; border-radius:20px; margin-bottom:22px; }
.avail.on::before { content:""; width:7px; height:7px; border-radius:50%; background:var(--acc); box-shadow:0 0 0 3px color-mix(in srgb,var(--acc) 30%,transparent); }
.hero h1 { font-size:clamp(32px,6.2vw,54px); margin:0 0 20px; letter-spacing:-0.03em; font-weight:800;
  background:linear-gradient(115deg,var(--ink) 40%,var(--muted)); -webkit-background-clip:text; background-clip:text; }
.lead { font-size:19px; color:var(--muted); max-width:660px; margin:0 0 22px; }
.who { font-family:var(--square); font-size:13.5px; color:var(--dim); margin-bottom:28px; }
.who strong { color:var(--muted); font-weight:600; }
.cta { display:flex; gap:12px; flex-wrap:wrap; }
.btn { display:inline-block; padding:11px 20px; border-radius:11px; border:1px solid var(--line);
  background:var(--panel); color:var(--ink); font-size:15px; font-weight:600; transition:.16s; }
.btn:hover { border-color:var(--acc); text-decoration:none; transform:translateY(-1px); box-shadow:var(--shadow); }
.btn.primary { background:var(--acc); color:var(--accink); border-color:var(--acc); }
.btn.primary:hover { filter:brightness(1.06); }

section { padding:34px 0; }
section h2 { position:relative; font-size:13px; text-transform:uppercase; letter-spacing:.14em; color:var(--dim);
  margin:0 0 24px; font-family:var(--square); padding-left:16px; }
section h2::before { content:""; position:absolute; left:0; top:50%; transform:translateY(-50%);
  width:7px; height:7px; border-radius:2px; background:linear-gradient(135deg,var(--acc),var(--acc2)); }
.row { display:flex; align-items:baseline; justify-content:space-between; }
.more { font-size:14px; color:var(--muted); }

/* stats */
.stats { padding-top:8px; }
.statgrid { display:grid; grid-template-columns:repeat(4,1fr); gap:12px; }
.stat { background:var(--panel); border:1px solid var(--line); border-radius:14px; padding:20px 18px; text-align:center; }
.stat .num { font-family:var(--square); font-size:clamp(22px,3.4vw,30px); font-weight:700; letter-spacing:-.02em;
  background:linear-gradient(135deg,var(--acc),var(--acc2)); -webkit-background-clip:text; background-clip:text; color:transparent; }
.stat .lbl { font-size:12.5px; color:var(--muted); margin-top:4px; }

/* services */
.grid { display:grid; grid-template-columns:repeat(2,1fr); gap:14px; }
.svc { background:var(--panel); border:1px solid var(--line); border-radius:16px; padding:24px; transition:.16s; }
.svc:hover { border-color:color-mix(in srgb,var(--acc) 50%,var(--line)); transform:translateY(-2px); box-shadow:var(--shadow); }
.svc .ic { font-size:24px; margin-bottom:12px; display:inline-grid; place-items:center; width:44px; height:44px;
  border-radius:11px; background:var(--panel2); border:1px solid var(--line); }
.svc h3 { margin:0 0 7px; font-size:17px; }
.svc p { margin:0; color:var(--muted); font-size:14.5px; }

/* work */
.worklist { display:flex; flex-direction:column; gap:12px; }
.witem { display:grid; grid-template-columns:150px 1fr; gap:20px; background:var(--panel); border:1px solid var(--line);
  border-radius:16px; padding:22px 24px; transition:.16s; }
.witem:hover { border-color:color-mix(in srgb,var(--acc2) 45%,var(--line)); box-shadow:var(--shadow); }
.wmeta { display:flex; flex-direction:column; gap:3px; padding-top:3px; }
.wperiod { font-family:var(--square); font-size:12.5px; color:var(--acc2); }
.worg { font-size:14px; color:var(--muted); font-weight:600; }
.wtop { display:flex; align-items:center; gap:12px; flex-wrap:wrap; margin-bottom:8px; }
.wtop h3 { margin:0; font-size:18px; }
.metric { font-family:var(--square); font-size:12px; font-weight:600; color:var(--acc); background:color-mix(in srgb,var(--acc) 12%,transparent);
  border:1px solid color-mix(in srgb,var(--acc) 30%,var(--line)); padding:3px 10px; border-radius:20px; white-space:nowrap; }
.wmain p { margin:0 0 12px; color:var(--muted); font-size:14.5px; }
.chips { display:flex; gap:7px; flex-wrap:wrap; }
.chips span { font-family:var(--square); font-size:12px; color:var(--muted); background:var(--panel2);
  border:1px solid var(--line); padding:3px 10px; border-radius:7px; }

/* stack */
.stackgrid { display:grid; grid-template-columns:repeat(2,1fr); gap:14px; }
.sgroup { background:var(--panel); border:1px solid var(--line); border-radius:16px; padding:20px 22px; }
.sglabel { font-family:var(--square); font-size:12px; text-transform:uppercase; letter-spacing:.1em; color:var(--dim); margin-bottom:12px; }

/* post cards */
.posts { grid-template-columns:1fr; gap:12px; }
.card { display:block; background:var(--panel); border:1px solid var(--line); border-radius:16px; padding:20px 24px; transition:.16s; }
.card:hover { border-color:var(--acc); text-decoration:none; transform:translateY(-2px); box-shadow:var(--shadow); }
.card-date, .post-date { font-family:var(--square); font-size:12.5px; color:var(--dim); }
.card h3 { margin:6px 0 6px; font-size:19px; color:var(--ink); }
.card p { margin:0; color:var(--muted); font-size:14.5px; }
.tags { margin-top:12px; display:flex; gap:8px; flex-wrap:wrap; }
.tags span { font-family:var(--square); font-size:12px; color:var(--acc2); background:var(--panel2); padding:3px 9px; border-radius:20px; }

/* blog filter */
.filter { display:flex; gap:8px; flex-wrap:wrap; margin:0 0 22px; }
.fbtn { font-family:var(--square); font-size:13px; color:var(--muted); background:var(--panel); border:1px solid var(--line);
  padding:6px 14px; border-radius:20px; cursor:pointer; transition:.14s; }
.fbtn em { color:var(--dim); font-style:normal; }
.fbtn:hover { color:var(--ink); border-color:var(--acc); }
.fbtn.on { color:var(--accink); background:var(--acc); border-color:var(--acc); }
.fbtn.on em { color:var(--accink); opacity:.7; }

/* 3D 태그 구체 (JS 없으면 아래 flex 목록으로 fallback) */
.tagsphere { position:relative; display:flex; flex-wrap:wrap; gap:9px; justify-content:center; align-items:center;
  margin:4px 0 30px; min-height:64px; }
.tagsphere.on { display:block; height:min(380px,74vw); margin:0 0 20px; overflow:hidden; touch-action:none; }
.ts-tag { font-family:var(--square); color:var(--acc2); background:var(--panel); border:1px solid var(--line);
  padding:5px 12px; border-radius:20px; white-space:nowrap; max-width:130px; overflow:hidden; text-overflow:ellipsis;
  line-height:1.2; cursor:pointer; transition:color .15s,border-color .15s,background .15s; }
.ts-tag:hover { text-decoration:none; color:var(--ink); border-color:var(--acc); }
.tagsphere.on .ts-tag { position:absolute; left:50%; top:50%; margin:0; will-change:transform,opacity; backface-visibility:hidden; }
.ts-tag.active { color:var(--accink); background:var(--acc); border-color:var(--acc); }
.ts-reset { position:absolute; left:50%; top:2px; transform:translateX(-50%); z-index:9999;
  font-family:var(--square); font-size:12px; color:var(--muted); background:color-mix(in srgb,var(--bg) 72%,transparent);
  backdrop-filter:blur(6px); border:1px solid var(--line); padding:5px 13px; border-radius:20px; cursor:pointer; }
.ts-reset:hover { color:var(--ink); border-color:var(--acc); }
@media (prefers-reduced-motion: reduce) { .tagsphere.on { display:flex; height:auto; } .tagsphere.on .ts-tag { position:static; transform:none!important; opacity:1!important; filter:none!important; } .ts-reset { position:static; transform:none; } }

.contact p { color:var(--muted); }

/* 문의 폼 */
.cform { position:relative; background:var(--panel); border:1px solid var(--line); border-radius:16px;
  padding:24px; margin:18px 0 22px; max-width:640px; }
.frow { display:flex; flex-direction:column; gap:6px; margin-bottom:14px; }
.frow label { font-family:var(--square); font-size:12px; color:var(--dim); text-transform:uppercase; letter-spacing:.08em; }
.frow input, .frow textarea { background:var(--panel2); color:var(--ink); border:1px solid var(--line); border-radius:10px;
  padding:11px 14px; font-family:var(--sans); font-size:15px; line-height:1.6; transition:border-color .15s; }
.frow input:focus, .frow textarea:focus { outline:none; border-color:var(--acc); }
.frow textarea { resize:vertical; min-height:120px; }
.cform .hp { position:absolute; left:-9999px; width:1px; height:1px; opacity:0; }
.cf-turnstile { margin:4px 0 14px; }
.fsend { display:flex; align-items:center; gap:14px; flex-wrap:wrap; }
.fsend button { cursor:pointer; font-family:var(--sans); font-size:15px; }
.fstatus { font-size:14px; color:var(--muted); }

/* 글 하단 명함 카드 */
.authorcard { display:flex; gap:18px; align-items:flex-start; background:var(--panel); border:1px solid var(--line);
  border-radius:16px; padding:24px; margin:40px 0 10px; }
.authorcard .ac-ic { font-size:28px; line-height:1; display:grid; place-items:center; width:56px; height:56px; flex:none;
  background:var(--panel2); border:1px solid var(--line); border-radius:14px; }
.authorcard .ac-name { font-weight:700; font-size:17px; }
.authorcard .ac-role { font-family:var(--square); font-size:12.5px; color:var(--dim); margin:2px 0 8px; }
.authorcard p { margin:0 0 14px; color:var(--muted); font-size:14.5px; }
.authorcard .cta { gap:10px; }
.authorcard .btn { padding:8px 15px; font-size:14px; }

/* 랜딩 최근글 2열 */
.recent6 { grid-template-columns:repeat(2,1fr); }

/* 랜딩↔블로그 시각 통일: 블로그 목록/글 상단에도 히어로 글로우 */
.bloglist, .post { position:relative; }
.bloglist::before, .post::before { content:""; position:absolute; inset:-90px -40% auto -40%; height:380px; z-index:-1; pointer-events:none;
  background:radial-gradient(60% 60% at 20% 30%, var(--glow1), transparent 70%),
             radial-gradient(50% 50% at 85% 15%, var(--glow2), transparent 70%); }

/* blog list / post */
.bloglist h1, .post h1 { font-size:clamp(26px,5vw,38px); margin:6px 0 10px; letter-spacing:-.02em; }
.bloglist .sub { color:var(--muted); margin:0 0 26px; }
.back { font-family:var(--square); font-size:13px; color:var(--muted); display:inline-block; margin:8px 0; }
.back:hover { color:var(--ink); text-decoration:none; }
.post { padding:44px 0; }
.post .tags { margin:14px 0 0; }
.post .body { margin-top:28px; font-size:16.5px; }
.post .body h2 { font-family:var(--sans); text-transform:none; letter-spacing:-0.01em; font-size:23px; color:var(--ink); margin:40px 0 12px; padding-left:0; }
.post .body h2::before { display:none; }
.post .body h3 { font-size:18px; margin:28px 0 10px; }
.post .body p { color:var(--ink); margin:14px 0; }
.post .body ul, .post .body ol { padding-left:22px; }
.post .body li { color:var(--ink); margin:6px 0; }
.post .body a { color:var(--acc2); }
.post .body .ref { font-size:14px; color:var(--muted); background:var(--panel); border:1px solid var(--line);
  border-left:3px solid var(--acc2); border-radius:0 10px 10px 0; padding:10px 16px; margin:16px 0; }
code { font-family:var(--mono); font-size:.88em; background:var(--panel2); padding:2px 6px; border-radius:5px; color:var(--acc); }
pre.code { background:var(--panel); border:1px solid var(--line); border-radius:12px; padding:18px; overflow-x:auto; position:relative; margin:18px 0; }
pre.code code { background:none; color:var(--ink); padding:0; font-size:13.5px; line-height:1.6; white-space:pre; }
pre.code[data-lang]::before { content:attr(data-lang); position:absolute; top:8px; right:12px; font-family:var(--mono); font-size:11px; color:var(--dim); }
blockquote { border-left:3px solid var(--acc); margin:18px 0; padding:6px 18px; color:var(--muted); background:var(--panel); border-radius:0 8px 8px 0; }
.post .body img { max-width:100%; border-radius:10px; border:1px solid var(--line); }

/* 티스토리 이관 글 더보기 (네이티브 details 토글) */
.post .body details.moreless { margin:14px 0; border:1px solid var(--line); border-radius:12px; background:var(--panel); }
.post .body details.moreless > summary { cursor:pointer; list-style:none; user-select:none;
  font-family:var(--square); font-size:13.5px; color:var(--acc2); padding:10px 16px; }
.post .body details.moreless > summary::-webkit-details-marker { display:none; }
.post .body details.moreless > summary::before { content:"▸ "; }
.post .body details.moreless[open] > summary::before { content:"▾ "; }
.post .body details.moreless[open] > summary { color:var(--muted); border-bottom:1px solid var(--line); }
.post .body details.moreless > .ml-body { padding:4px 18px 12px; }
hr { border:none; border-top:1px solid var(--line); margin:30px 0; }

.foot { max-width:var(--wrap); margin:48px auto 0; padding:24px 22px; border-top:1px solid var(--line);
  display:flex; justify-content:space-between; color:var(--dim); font-size:13px; font-family:var(--square); flex-wrap:wrap; gap:8px; }

@media (max-width:720px){
  .statgrid{ grid-template-columns:repeat(2,1fr); }
  .witem{ grid-template-columns:1fr; gap:12px; }
  .wmeta{ flex-direction:row; align-items:baseline; gap:10px; padding-top:0; }
  .recent6{ grid-template-columns:1fr; }
  .authorcard{ flex-direction:column; }
}
@media (max-width:620px){ .grid, .stackgrid{grid-template-columns:1fr;} .hero{padding:56px 0 24px;} .nav .links a{margin-left:14px;} }

/* work 카드 상세 이력 링크 */
.wlink { font-family:var(--square); font-size:13px; color:var(--acc); text-decoration:none; white-space:nowrap; }
.wlink:hover { text-decoration:underline; }

/* ── 시간대 테마 전환을 서서히 ──
   커스텀 프로퍼티는 @property로 <color> 등록해야 transition이 먹는다(미등록이면 즉시 스왑).
   data-phase가 바뀌는 순간 60초에 걸쳐 색이 페이드. 미지원 브라우저는 기존처럼 즉시 전환. */
@property --bg { syntax:"<color>"; inherits:true; initial-value:#0b0d11; }
@property --panel { syntax:"<color>"; inherits:true; initial-value:#14171f; }
@property --panel2 { syntax:"<color>"; inherits:true; initial-value:#1a1e28; }
@property --line { syntax:"<color>"; inherits:true; initial-value:#262b36; }
@property --ink { syntax:"<color>"; inherits:true; initial-value:#e9ebf0; }
@property --muted { syntax:"<color>"; inherits:true; initial-value:#9aa3b2; }
@property --dim { syntax:"<color>"; inherits:true; initial-value:#6b7280; }
@property --acc { syntax:"<color>"; inherits:true; initial-value:#6ee7b7; }
@property --acc2 { syntax:"<color>"; inherits:true; initial-value:#38bdf8; }
@property --accink { syntax:"<color>"; inherits:true; initial-value:#04120c; }
@property --glow1 { syntax:"<color>"; inherits:true; initial-value:rgba(110,231,183,.16); }
@property --glow2 { syntax:"<color>"; inherits:true; initial-value:rgba(56,189,248,.14); }
@media (prefers-reduced-motion: no-preference) {
  :root { transition: --bg 60s linear, --panel 60s linear, --panel2 60s linear, --line 60s linear,
    --ink 60s linear, --muted 60s linear, --dim 60s linear, --acc 60s linear, --acc2 60s linear,
    --accink 60s linear, --glow1 60s linear, --glow2 60s linear; }
}

/* ── 시간대 색 테마 (JS가 <html data-phase="...">를 세팅, no-JS면 기존 다크/라이트 유지) ── */
/* 새벽: 동 트는 중 — 진파랑 바탕 + 주황 */
:root[data-phase="dawn"] {
  --bg:#10131f; --panel:#171b2b; --panel2:#1d2235; --line:#2a3049;
  --ink:#eceaf4; --muted:#a3a8bf; --dim:#717892;
  --acc:#fb923c; --acc2:#818cf8; --accink:#1a0d02;
  --glow1:rgba(251,146,60,.20); --glow2:rgba(99,102,241,.16);
  --shadow:0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.18);
}
/* 아침: 동 텄음 — 따뜻한 하양 바탕 + 노랑·하늘 포인트 */
:root[data-phase="morning"] {
  --bg:#fbf9f2; --panel:#fff; --panel2:#f3efe2; --line:#e8e2cf;
  --ink:#1f2430; --muted:#5b6172; --dim:#8f95a5;
  --acc:#d97706; --acc2:#0284c7; --accink:#fff;
  --glow1:rgba(250,204,21,.16); --glow2:rgba(56,189,248,.12);
  --shadow:0 1px 2px rgba(16,24,40,.06), 0 10px 30px rgba(16,24,40,.06);
}
/* 낮: 하늘빛 하양 바탕 + 하늘·노랑 포인트 */
:root[data-phase="day"] {
  --bg:#f6fafd; --panel:#fff; --panel2:#eaf2f8; --line:#dde7ef;
  --ink:#14202b; --muted:#51606f; --dim:#87929f;
  --acc:#0284c7; --acc2:#d97706; --accink:#fff;
  --glow1:rgba(56,189,248,.16); --glow2:rgba(250,204,21,.10);
  --shadow:0 1px 2px rgba(16,24,40,.06), 0 10px 30px rgba(16,24,40,.06);
}
/* 저녁: 해 지는 중 — 새벽보다 붉고 보랏빛 도는 어두운 바탕 + 주황 */
:root[data-phase="evening"] {
  --bg:#141021; --panel:#1c1730; --panel2:#231d3c; --line:#332b52;
  --ink:#f0eaf6; --muted:#aaa2c0; --dim:#787193;
  --acc:#f97316; --acc2:#6366f1; --accink:#180a01;
  --glow1:rgba(249,115,22,.22); --glow2:rgba(79,70,229,.16);
  --shadow:0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.18);
}
/* 밤: 진파랑·검정 바탕 + 노란 달 포인트 */
:root[data-phase="night"] {
  --bg:#070a14; --panel:#0d1120; --panel2:#121729; --line:#1f2740;
  --ink:#e6e9f2; --muted:#939bb0; --dim:#636b82;
  --acc:#facc15; --acc2:#60a5fa; --accink:#181203;
  --glow1:rgba(37,58,131,.30); --glow2:rgba(250,204,21,.10);
  --shadow:0 1px 2px rgba(0,0,0,.35), 0 8px 24px rgba(0,0,0,.22);
}

/* ── 방문자 카운터 (우하단 고정 알약 — 랜딩 시계와 같은 룩, /api/hit 응답이 오면 .on) ── */
.vstamp { position:fixed; right:18px; bottom:18px; z-index:8; display:none; align-items:center; gap:8px;
  font-family:var(--square); font-size:13px; color:var(--muted); letter-spacing:.04em;
  border:1px solid var(--line); background:color-mix(in srgb, var(--panel) 72%, transparent);
  backdrop-filter:blur(6px); padding:6px 13px; border-radius:20px; font-variant-numeric:tabular-nums; }
.vstamp.on { display:inline-flex; }
.vstamp .vs-ic { display:inline-flex; line-height:0; color:var(--dim); }
.vstamp strong { color:var(--ink); font-weight:700; }
.vstamp .vs-sep { color:var(--dim); }
@media (max-width:640px){ .vstamp { right:12px; bottom:12px; font-size:12px; padding:5px 11px; gap:6px; } }

/* ── 랜딩 시계 (해/달 아이콘은 data-daylight로 전환) ── */
.clock { position:absolute; top:36px; right:0; display:inline-flex; align-items:center; gap:8px;
  font-family:var(--square); font-size:13.5px; color:var(--muted); letter-spacing:.06em;
  border:1px solid var(--line); background:color-mix(in srgb,var(--panel) 70%,transparent);
  padding:6px 13px; border-radius:20px; font-variant-numeric:tabular-nums; }
.clock .clock-icon { display:none; line-height:0; }
:root[data-daylight="sun"] .clock .sun { display:block; }
:root[data-daylight="moon"] .clock .moon { display:block; }
:root:not([data-daylight]) .clock .sun { display:block; }
@media (max-width:640px){ .clock { position:static; margin-bottom:16px; } }