:root{
    --ink:#0C0E13;
    --ground:#101319;
    --panel:#161A22;
    --panel-2:#1C212B;
    --line:#272D3A;
    --line-soft:#1E2430;
    --text:#E9E7E2;
    --text-dim:#A8AEBC;
    --text-faint:#6F7684;
    --brass:#C9A45C;
    --brass-lo:#8C6F36;
    --brass-wash:rgba(201,164,92,.10);
    --serif:"Gowun Batang",'Nanum Myeongjo',serif;
    --sans:"IBM Plex Sans KR",-apple-system,BlinkMacSystemFont,'Apple SD Gothic Neo','Malgun Gothic',sans-serif;
    --mono:"IBM Plex Mono",ui-monospace,monospace;
    --wrap:36rem;
    color-scheme:dark;
  }
  *{box-sizing:border-box}
  body{
    margin:0;background:var(--ink);color:var(--text);
    font-family:var(--sans);font-size:15px;line-height:1.7;
    word-break:keep-all;overflow-wrap:anywhere;
    -webkit-font-smoothing:antialiased;
    background-image:radial-gradient(120% 60% at 50% -10%, rgba(201,164,92,.07), transparent 60%);
    background-repeat:no-repeat;
  }
  .wrap{max-width:var(--wrap);margin:0 auto;padding-inline:20px;padding-block:0}
  button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:none;cursor:pointer}
  :focus-visible{outline:2px solid var(--brass);outline-offset:3px;border-radius:2px}

  /* ---- 상단 진행 레일 ---- */
  .rail{position:sticky;top:env(safe-area-inset-top,0px);z-index:10;background:rgba(12,14,19,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line-soft)}
  .rail-in{max-width:var(--wrap);margin:0 auto;padding:12px 20px;display:flex;align-items:center;gap:14px}
  .brandmark{font-family:var(--serif);font-size:15px;letter-spacing:.22em;color:var(--brass);white-space:nowrap}
  .ticks{display:flex;gap:5px;flex:1;min-width:0}
  .tick{height:2px;flex:1;background:var(--line);transition:background .35s ease}
  .tick.on{background:var(--brass)}
  .step-no{font-family:var(--mono);font-size:11px;color:var(--text-faint);letter-spacing:.06em;white-space:nowrap;font-variant-numeric:tabular-nums}

  /* ---- 시작 화면 ---- */
  .hero{padding-block:clamp(48px,12vw,92px) 40px}
  .eyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.18em;color:var(--brass);text-transform:uppercase;margin-bottom:22px}
  h1{font-family:var(--serif);font-weight:700;font-size:clamp(28px,7.4vw,40px);line-height:1.38;margin:0 0 20px;text-wrap:balance;letter-spacing:-.01em}
  .lede{color:var(--text-dim);font-size:16px;margin:0 0 34px;max-width:30rem}
  .meta-row{display:flex;flex-wrap:wrap;gap:10px 22px;margin-bottom:34px;padding-top:24px;border-top:1px solid var(--line-soft)}
  .meta{font-size:13px;color:var(--text-faint)}
  .meta b{display:block;font-size:13px;font-weight:600;color:var(--text-dim);letter-spacing:.01em;margin-bottom:1px}
  .cta{display:inline-flex;align-items:center;gap:12px;background:var(--brass);color:#14100A;font-weight:600;padding:15px 28px;border-radius:2px;transition:filter .2s ease}
  .cta:hover{filter:brightness(1.08)}
  .cta.ghost{background:none;color:var(--text);border:1px solid var(--line);font-weight:500}
  .cta.ghost:hover{border-color:var(--brass);color:var(--brass);filter:none}
  .note{font-size:12.5px;color:var(--text-faint);margin-top:18px}

  /* ---- 질문 ---- */
  .qhead{padding-block:34px 4px}
  .qlabel{font-size:11.5px;font-weight:500;letter-spacing:.14em;color:var(--brass);margin-bottom:14px}
  h2{font-family:var(--serif);font-weight:700;font-size:clamp(21px,5.2vw,27px);line-height:1.5;margin:0 0 12px;text-wrap:balance}
  .qhelp{color:var(--text-dim);font-size:14px;margin:0 0 6px}
  .recap{border-left:2px solid var(--brass-lo);background:var(--brass-wash);padding:12px 16px;margin:18px 0 0;font-size:13.5px;color:var(--text-dim)}
  .recap b{color:var(--text);font-weight:500}
  .scene{border:1px solid var(--line);background:var(--panel);padding:18px 20px;margin:22px 0 4px;font-size:14.5px;line-height:1.85;color:var(--text-dim)}
  .scene .tag{display:block;font-size:11px;letter-spacing:.12em;color:var(--text-faint);margin-bottom:10px}
  .scene q{color:var(--text);font-style:normal}

  .opts{display:flex;flex-direction:column;gap:0;margin:22px 0 0;border-top:1px solid var(--line-soft)}
  .opt{display:flex;gap:14px;align-items:flex-start;text-align:left;width:100%;padding:16px 14px 16px 4px;border-bottom:1px solid var(--line-soft);transition:background .16s ease,padding .16s ease}
  .opt:hover{background:var(--panel);padding-left:12px}
  .opt .idx{font-family:var(--mono);font-size:11.5px;color:var(--text-faint);padding-top:4px;flex:none;width:1.4em;font-variant-numeric:tabular-nums}
  .opt:hover .idx{color:var(--brass)}
  .opt .body{flex:1;min-width:0}
  .opt .t{display:block;line-height:1.6}
  .opt .d{display:block;font-size:13px;color:var(--text-faint);margin-top:4px;line-height:1.65}
  .opt .arw{color:var(--line);flex:none;padding-top:3px;transition:color .16s ease,transform .16s ease}
  .opt:hover .arw{color:var(--brass);transform:translateX(3px)}

  .aux{margin-top:20px;display:flex;flex-wrap:wrap;gap:8px 20px;align-items:center}
  .linkish{font-size:13px;color:var(--text-faint);text-decoration:underline;text-underline-offset:4px;text-decoration-color:var(--line)}
  .linkish:hover{color:var(--brass);text-decoration-color:var(--brass-lo)}
  .navback{padding-block:26px 56px}

  /* ---- 결과 ---- */
  .res{padding-block:36px 72px}
  .res-eyebrow{font-size:11.5px;font-weight:500;letter-spacing:.14em;color:var(--brass);margin-bottom:16px}
  .verdict{font-family:var(--serif);font-weight:700;font-size:clamp(23px,5.6vw,31px);line-height:1.52;margin:0 0 8px;text-wrap:balance}
  .verdict em{font-style:normal;color:var(--brass);box-shadow:inset 0 -.45em 0 rgba(201,164,92,.13)}
  .sec{margin-top:40px;padding-top:28px;border-top:1px solid var(--line-soft)}
  .sec-h{font-size:11.5px;font-weight:500;letter-spacing:.14em;color:var(--text-faint);margin-bottom:18px}
  dl.trace{margin:0;display:grid;grid-template-columns:auto 1fr;gap:10px 18px;font-size:14px}
  dl.trace dt{color:var(--text-faint);font-size:12.5px;white-space:nowrap;padding-top:2px}
  dl.trace dd{margin:0;color:var(--text-dim)}
  dl.trace dd b{color:var(--text);font-weight:500}
  @media(max-width:430px){dl.trace{grid-template-columns:1fr;gap:2px 0}dl.trace dd{margin-bottom:12px}}

  .lecture{border:1px solid var(--line);background:linear-gradient(180deg,var(--panel-2),var(--panel));padding:24px 22px}
  .lecture.alt{background:none;border-color:var(--line-soft)}
  .lec-top{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;margin-bottom:6px}
  .lec-name{font-family:var(--serif);font-size:25px;font-weight:700;letter-spacing:-.01em}
  .chip{font-size:11.5px;letter-spacing:.06em;padding:3px 10px;border:1px solid var(--line);color:var(--text-dim);border-radius:2px;white-space:nowrap}
  .chip.field{border-color:var(--brass-lo);color:var(--brass)}
  .chip.pend{border-color:#5B4A2A;color:#B99A5F;background:rgba(201,164,92,.07)}
  .lec-why{font-size:14.5px;color:var(--text-dim);margin:14px 0 0}
  .lec-what{font-size:14px;color:var(--text-dim);margin:16px 0 0;padding-top:16px;border-top:1px solid var(--line-soft)}
  .lec-what b{display:block;font-size:11px;letter-spacing:.12em;color:var(--text-faint);margin-bottom:8px;font-weight:500}
  .caveat{font-size:13px;color:var(--text-faint);margin-top:14px;padding-left:12px;border-left:1px solid var(--line)}

  ul.acts{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:14px}
  ul.acts li{display:flex;gap:12px;font-size:14.5px;color:var(--text-dim);line-height:1.7}
  ul.acts li::before{content:"—";color:var(--brass-lo);flex:none}

  .ctas{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:6px}
  @media(max-width:430px){.ctas{grid-template-columns:1fr}}
  .ctacard{text-align:left;border:1px solid var(--line);background:var(--panel);padding:16px 16px;transition:border-color .18s ease,background .18s ease}
  .ctacard:hover{border-color:var(--brass);background:var(--panel-2)}
  .ctacard strong{display:block;font-weight:600;font-size:15px;margin-bottom:4px}
  .ctacard span{display:block;font-size:12.5px;color:var(--text-faint);line-height:1.6}
  .ctacard.lead{border-color:var(--brass-lo);background:var(--brass-wash);grid-column:1/-1}
  .ctacard.lead strong{color:var(--brass)}
  a.ctacard{display:block;text-decoration:none;color:inherit}
  a.lec-name{text-decoration:none;color:inherit;border-bottom:1px solid var(--brass-lo);transition:color .18s ease}
  a.lec-name:hover{color:var(--brass)}

  .copybox{margin-top:18px;border:1px solid var(--line-soft);background:var(--ground)}
  .copybox-h{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:11px 14px;border-bottom:1px solid var(--line-soft)}
  .copybox-h span{font-size:11px;letter-spacing:.12em;color:var(--text-faint)}
  .copybtn{font-size:12px;letter-spacing:.04em;color:var(--brass);border:1px solid var(--brass-lo);padding:5px 14px;border-radius:2px}
  .copybtn:hover{background:var(--brass-wash)}
  .copybox pre{margin:0;padding:16px 14px;white-space:pre-wrap;word-break:break-word;font-family:var(--sans);font-size:13.5px;line-height:1.85;color:var(--text-dim)}

  .disclaimer{margin-top:46px;padding-top:22px;border-top:1px solid var(--line-soft);font-size:12.5px;color:var(--text-faint);line-height:1.8}
  .stage{animation:rise .38s cubic-bezier(.22,.7,.3,1) both}
  @keyframes rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
  @media(prefers-reduced-motion:reduce){.stage{animation:none}*{transition:none!important}}