/* =========================================================
     DESIGN SYSTEM  ·  minimal / editorial
     · type: Montserrat (EN) + Pretendard (KR), JetBrains Mono (labels only)
     · color: near-black, warm off-white, one lime accent
     · rule: only 1px hairlines between ideas. No boxes.
     ========================================================= */
  :root{
    --bg:      #0B0B0C;
    --bg-hi:   #101012;
    --fg:      #F3F1EC;
    --fg-2:    #B8B6B0;
    --mute:    #6A6864;
    --mute-2:  #2C2B2E;
    --line:    #1A1A1C;
    --line-2:  #26262A;
    --acc:     #D9FF3B;
    --acc-ink: #0B0B0C;

    --font-scale: 1;
    --f-en:  "Montserrat", ui-sans-serif, system-ui, -apple-system, sans-serif;
    --f-kr:  "Pretendard", "Montserrat", ui-sans-serif, system-ui, sans-serif;
    /* JetBrains Mono → Montserrat 600 로 통일. `.mono` 클래스나
       --f-mono 를 참조하던 모든 mono 스타일에 자동 적용됨. */
    --f-mono:"Montserrat", ui-sans-serif, system-ui, -apple-system, sans-serif;
    --f-mono-weight: 600;

    --max: 1280px;
    --pad: 40px;
  }
  @media (max-width: 720px){ :root{ --pad: 20px; } }

  *{ box-sizing: border-box; margin: 0; padding: 0; }
  html, body{ background: var(--bg); color: var(--fg); overflow-x: hidden; }
  body{
    font-family: var(--f-en);
    font-size: calc(15px * var(--font-scale));
    line-height: 1.55;
    font-weight: 300;
    letter-spacing: -0.005em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }
  /* Korean text: use Pretendard */
  :lang(ko), .kr{ font-family: var(--f-kr); }

  a{ color: inherit; text-decoration: none; }
  button{ font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
  ::selection{ background: var(--acc); color: var(--acc-ink); }
  img{ display: block; max-width: 100%; }
  image-slot{ display: block; width: 100%; background: #131315; --border-color: #1F1F22; --hover-border: var(--acc); }

  /* Utilities */
  .mono{ font-family: var(--f-mono); font-feature-settings: "zero"; letter-spacing: 0; }
  .acc{ color: var(--acc); }
  .wrap{ max-width: var(--max); margin: 0 auto; padding: 0 var(--pad); }

  /* Section frame */
  section[data-screen-label]{
    padding: 140px 0;
    scroll-margin-top: 72px;
    position: relative;
  }
  section[data-screen-label] + section[data-screen-label]::before{
    content:""; position: absolute; top: 0; left: var(--pad); right: var(--pad); height: 1px; background: var(--line);
  }
  @media (max-width: 900px){
    section[data-screen-label]{ padding: 80px 0; }
  }

  /* Section header — tiny, quiet */
  .sec-head{
    display: flex; justify-content: space-between; align-items: baseline;
    padding-bottom: 72px;
    gap: 24px;
  }
  .sec-head__label{
    font-family: var(--f-mono); font-weight: 600; font-size: 11px; letter-spacing: 0.1em;
    text-transform: uppercase; color: var(--mute);
  }
  .sec-head__label b{ color: var(--acc); font-weight: 500; }
  .sec-head__title{
    font-family: var(--f-en);
    font-weight: 300;
    font-size: clamp(40px, 5.4vw, 76px);
    letter-spacing: -0.03em;
    line-height: 1;
  }
  .sec-head__nav{
    font-family: var(--f-mono); font-weight: 600; font-size: 11px; color: var(--mute);
    letter-spacing: 0.06em; text-transform: uppercase;
  }
  @media (max-width: 720px){
    .sec-head{ flex-wrap: wrap; padding-bottom: 48px; }
  }

  /* =========================================================
     NAV
     ========================================================= */
  .nav{
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    padding: 20px var(--pad);
    background: color-mix(in oklab, var(--bg) 82%, transparent);
    backdrop-filter: saturate(120%) blur(16px);
    -webkit-backdrop-filter: saturate(120%) blur(16px);
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 24px;
    border-bottom: 1px solid transparent;
    transition: border-color .3s ease;
  }
  .nav.is-scrolled{ border-bottom-color: var(--line); }
  .nav__brand{
    font-family: var(--f-en); font-weight: 500;
    font-size: 13px; letter-spacing: 0.02em;
  }
  .nav__brand .dim{ color: var(--mute); font-weight: 300; }
  .nav__links{
    display: flex; justify-content: center; gap: 4px;
    font-family: var(--f-en); font-size: 12px;
    font-weight: 400; letter-spacing: 0.02em;
  }
  .nav__links a{
    position: relative;
    padding: 8px 12px;
    color: var(--mute);
    transition: color .18s ease;
    border-radius: 999px;
  }
  .nav__links a:hover{ color: var(--fg); }
  .nav__links a.is-active{ color: var(--fg); }
  .nav__links a.is-active::before{
    content:""; position: absolute; left: 12px; right: 12px; bottom: 4px;
    height: 1px; background: var(--acc);
  }
  .nav__cta{
    justify-self: end;
    display: inline-flex; align-items: center; gap: 8px;
    font-family: var(--f-en); font-size: 12px; font-weight: 500;
    padding: 8px 14px;
    border: 1px solid var(--line-2);
    color: var(--fg);
    border-radius: 999px;
    transition: border-color .18s ease;
  }
  .nav__cta:hover{ border-color: var(--acc); }
  .nav__cta .live{
    width: 6px; height: 6px; background: var(--acc); border-radius: 50%;
    box-shadow: 0 0 0 3px color-mix(in oklab, var(--acc) 22%, transparent);
    animation: pulse 2.4s ease-in-out infinite;
  }
  @keyframes pulse{
    0%,100%{ box-shadow: 0 0 0 3px color-mix(in oklab, var(--acc) 22%, transparent); }
    50%    { box-shadow: 0 0 0 6px color-mix(in oklab, var(--acc) 8%, transparent); }
  }
  @media (max-width: 900px){
    .nav{ grid-template-columns: 1fr auto; }
    .nav__links{ display: none; }
  }

  /* =========================================================
     00 · INTRO — 이름 하나에 집중
     ========================================================= */
  #intro{
    padding: 160px 0 120px;
    min-height: 100vh;
    display: flex; flex-direction: column; justify-content: space-between;
  }
  .intro-top{
    display: flex; justify-content: space-between; align-items: flex-start;
    padding-top: 40px;
    font-family: var(--f-mono); font-weight: 600; font-size: 11px;
    letter-spacing: 0.08em; text-transform: uppercase;
    color: var(--mute);
  }
  .intro-top .r{ text-align: right; line-height: 1.9; }
  .intro-top .r .live{ color: var(--acc); }
  .intro-top .r .live::before{
    content:"●"; margin-right: 6px;
  }
  .intro-top b{ display: block; color: var(--fg); font-weight: 500; margin-bottom: 2px; }

  .intro-hero{
    padding: 80px 0;
  }
  .intro-hero h1{
    font-family: var(--f-en);
    font-weight: 200;
    font-size: clamp(56px, 11vw, 180px);
    line-height: 0.95;
    letter-spacing: -0.045em;
    color: var(--fg);
  }
  .intro-hero h1 .kr{
    font-family: var(--f-kr);
    font-weight: 300;
    letter-spacing: -0.05em;
    display: block;
    color: var(--fg-2);
    margin-top: 8px;
    font-size: 0.5em;
  }

  .intro-foot{
    display: flex; justify-content: space-between; align-items: flex-end;
    gap: 24px;
    padding-top: 40px;
    border-top: 1px solid var(--line);
  }
  .intro-foot .tag{
    font-family: var(--f-kr);
    font-weight: 300;
    font-size: clamp(15px, 1.4vw, 18px);
    color: var(--fg-2);
    line-height: 1.6;
    max-width: 460px;
  }
  .intro-foot .scroll{
    display: inline-flex; align-items: center; gap: 10px;
    font-family: var(--f-mono); font-weight: 600; font-size: 11px;
    color: var(--mute); letter-spacing: 0.1em; text-transform: uppercase;
  }
  .intro-foot .scroll .arrow{
    display: inline-block; width: 24px; height: 1px; background: var(--acc); position: relative;
  }
  .intro-foot .scroll .arrow::after{
    content:""; position: absolute; right: 0; top: -3px;
    width: 7px; height: 7px; border-right: 1px solid var(--acc); border-bottom: 1px solid var(--acc);
    transform: rotate(-45deg);
  }
  @media (max-width: 720px){
    .intro-foot{ flex-direction: column; align-items: flex-start; }
  }

  /* =========================================================
     01 · PROFILE — 미니멀 재구성
     사진 + 짧은 한 단락 + 심플 리스트 하나
     ========================================================= */
  .profile{
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 80px;
    align-items: start;
  }
  @media (max-width: 900px){
    .profile{ grid-template-columns: 1fr; gap: 40px; }
    .profile__photo{ max-width: 320px; }
  }
  /* portrait image (3:4) — matches provided photo 413×531
     image-slot는 shadow DOM 내부 스타일이 있어 host aspect-ratio가
     안 먹으므로 wrapper 박스로 강제한다. */
  .profile__photo .frame{
    position: relative;
    width: 100%;
    aspect-ratio: 413/531;
    background: var(--bg-hi);
    overflow: hidden;
  }
  .profile__photo .frame image-slot{
    position: absolute; inset: 0;
    width: 100%; height: 100%;
  }
  .profile__photo .cap{
    margin-top: 12px;
    font-family: var(--f-mono); font-weight: 600; font-size: 11px; color: var(--mute);
    letter-spacing: 0.08em; text-transform: uppercase;
    display: flex; justify-content: space-between;
  }
  .profile__right p{
    font-family: var(--f-kr);
    font-weight: 300;
    font-size: clamp(20px, 1.9vw, 26px);
    line-height: 1.55;
    letter-spacing: -0.015em;
    color: var(--fg);
    max-width: 620px;
  }
  .profile__right p .acc{ color: var(--acc); }
  .profile__right p + p{
    margin-top: 24px;
    font-size: 15px;
    color: var(--fg-2);
    line-height: 1.75;
    max-width: 540px;
    letter-spacing: 0;
    font-weight: 300;
  }
  .profile__list{
    /* Activity 헤더가 이미 border-top과 여백을 갖고 있어 여기서는 제거 */
    list-style: none;
    max-width: 560px;
  }
  .profile__list li{
    display: grid; grid-template-columns: 175px 1fr;
    gap: 24px;
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
    font-size: 14px;
    align-items: baseline;
  }
  .profile__list li .y{
    font-family: var(--f-mono); font-weight: 600; font-size: 12px;
    color: var(--fg-2); letter-spacing: 0.02em;
  }
  .profile__list li .t{
    color: var(--fg); font-weight: 400;
    text-align: right;
    font-family: var(--f-kr);
    font-size: 13.5px;
  }
  @media (max-width: 640px){
    .profile__list li{ grid-template-columns: 1fr; gap: 4px; }
    .profile__list li .t{ text-align: left; }
  }
  .profile__list li .t small{
    display: block; color: var(--mute); font-size: 12px;
    font-weight: 300; margin-top: 4px;
    font-family: var(--f-kr);
    line-height: 1.55;
  }
  .profile__list li .t small + small{ margin-top: 2px; }

  /* ---- Activity (경력 타이틀) ---- */
  .profile__activity-head{
    display: flex; justify-content: space-between; align-items: center;
    gap: 16px;
    margin-top: 40px;
    padding-top: 24px;
    margin-bottom: 20px;
    border-top: 1px solid var(--line);
    flex-wrap: wrap;
  }
  .profile__activity-head .k{
    font-family: var(--f-mono); font-weight: 600;
    font-size: 11px; color: var(--acc);
    text-transform: uppercase; letter-spacing: 0.1em;
  }
  .profile__activity-head .legend{
    font-family: var(--f-mono); font-weight: 600;
    font-size: 9.5px; color: var(--mute);
    letter-spacing: 0.08em; text-transform: uppercase;
  }

  /* ---- Skills ---- */
  .profile__skills{
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid var(--line);
  }
  .profile__skills-head{
    display: flex; justify-content: space-between; align-items: center;
    gap: 16px;
    margin-bottom: 20px;
    flex-wrap: wrap;
  }
  .profile__skills-head .k{
    font-family: var(--f-mono); font-weight: 600;
    font-size: 11px; color: var(--acc);
    text-transform: uppercase; letter-spacing: 0.1em;
  }
  .profile__skills-head .legend{
    display: inline-flex; align-items: center; gap: 6px;
    font-family: var(--f-mono); font-weight: 600;
    font-size: 9.5px; color: var(--mute);
    letter-spacing: 0.08em; text-transform: uppercase;
  }
  .profile__skills-head .legend .sep{ margin: 0 6px; color: var(--mute-2); }
  .profile__skills-head .legend .dot{
    width: 6px; height: 6px; border-radius: 50%;
    display: inline-block;
    background: var(--mute-2);
  }
  .profile__skills-head .legend .dot.on{ background: var(--acc); }

  .skills-grid{
    list-style: none;
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 12px 40px;
  }
  @media (max-width: 640px){
    .skills-grid{ grid-template-columns: 1fr; gap: 10px; }
  }
  .skills-grid li{
    display: flex; justify-content: space-between; align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid var(--line);
    gap: 16px;
  }
  .skills-grid .n{
    font-family: var(--f-en); font-weight: 500;
    font-size: 13px; color: var(--fg);
    letter-spacing: -0.005em;
  }
  .skills-grid .lv{
    display: inline-flex; gap: 5px;
  }
  .skills-grid .lv i{
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--mute-2);
    display: inline-block;
    transition: transform .18s ease;
  }
  /* data-lv 값에 따라 앞의 n개를 형광 그린으로 채움 */
  .skills-grid .lv[data-lv="1"] i:nth-child(-n+1),
  .skills-grid .lv[data-lv="2"] i:nth-child(-n+2),
  .skills-grid .lv[data-lv="3"] i:nth-child(-n+3),
  .skills-grid .lv[data-lv="4"] i:nth-child(-n+4),
  .skills-grid .lv[data-lv="5"] i:nth-child(-n+5){
    background: var(--acc);
  }
  .skills-grid li:hover .lv i.on,
  .skills-grid li:hover .lv i{
    /* 살짝의 hover 반응 */
  }

  /* =========================================================
     02 · BRAND CI  — 4-up flat grid, hairline dividers
     ========================================================= */
  .ci{
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 60px 40px;
  }
  @media (max-width: 720px){ .ci{ grid-template-columns: 1fr; gap: 40px; } }
  .ci__item{ display: flex; flex-direction: column; }
  .ci__frame{
    aspect-ratio: 4/3;
    background: var(--bg-hi);
    position: relative;
    /* overflow: hidden 을 빼서 image-slot 하단 컨트롤(Replace/Remove) 이 잘리지 않게 함 */
  }
  .ci__frame image-slot{ height: 100%; }
  /* 이미지 교체 힌트 — 호버 시 상단에 살짝 안내 */
  .ci__frame::after{
    content: "CLICK · DRAG TO REPLACE";
    position: absolute; top: 8px; right: 8px;
    font-family: var(--f-mono); font-weight: 600; font-size: 9.5px;
    letter-spacing: 0.08em;
    padding: 4px 8px;
    background: rgba(0,0,0,0.55);
    color: var(--acc);
    backdrop-filter: blur(6px);
    opacity: 0;
    transition: opacity .2s ease;
    pointer-events: none;
    z-index: 4;
  }
  .ci__frame:hover::after{ opacity: 1; }
  .ci__foot{
    display: flex; justify-content: space-between; align-items: baseline;
    padding-top: 16px;
  }
  .ci__name{
    font-family: var(--f-kr); font-weight: 600;
    font-size: 19px; letter-spacing: -0.02em;
  }
  .ci__meta{
    font-family: var(--f-kr); font-weight: 400;
    font-size: 13px; color: var(--mute);
    letter-spacing: -0.01em;
  }
  .ci__concept{
    font-family: var(--f-kr); font-weight: 300;
    font-size: 14px; line-height: 1.75;
    color: var(--fg-2);
    margin-top: 14px;
    max-width: 573px;
  }
  .ci__tags{
    display: flex; flex-wrap: wrap; gap: 6px;
    margin-top: 14px;
  }
  .ci__tags span{
    font-family: var(--f-en); font-weight: 600;
    font-size: 11px;
    color: var(--mute);
    padding: 4px 10px;
    border: 1px solid var(--line-2);
    border-radius: 999px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    transition: color .18s ease, border-color .18s ease;
  }
  .ci__item:hover .ci__tags span{ color: var(--fg-2); border-color: var(--line-2); }
  .ci__tags span:hover{ color: var(--acc); border-color: var(--acc); }

  /* =========================================================
     03 · WEB / APP  — one column, calmer stages
     ========================================================= */
  .web{ display: flex; flex-direction: column; gap: 120px; }
  .web__item{ display: grid; gap: 20px; }
  .web__head{
    display: flex; justify-content: space-between; align-items: baseline;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--line);
  }
  .web__title{
    font-family: var(--f-en); font-weight: 400;
    font-size: clamp(20px, 2vw, 26px); letter-spacing: -0.015em;
  }
  .web__kind{
    font-family: var(--f-mono); font-weight: 600; font-size: 11px; color: var(--mute);
    letter-spacing: 0.06em; text-transform: uppercase;
  }

  .web__stage{
    padding: 60px 40px;
    background: var(--bg-hi);
    position: relative;
    overflow: hidden;
    display: flex; justify-content: center;
  }
  @media (max-width: 720px){ .web__stage{ padding: 32px 20px; } }

  .browser{
    width: 100%; max-width: 900px;
    background: #17171A;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 30px 60px -20px rgba(0,0,0,0.5);
  }
  .browser__bar{
    display: flex; align-items: center; gap: 6px;
    padding: 10px 14px; background: #1D1D20;
    border-bottom: 1px solid var(--line-2);
  }
  .browser__bar .dot{ width: 8px; height: 8px; border-radius: 50%; background: #333; }
  .browser__url{
    margin-left: 12px; padding: 4px 10px;
    background: #0F0F11; border: 1px solid var(--line-2);
    font-family: var(--f-mono); font-weight: 600; font-size: 10.5px; color: var(--mute);
    border-radius: 4px; flex: 1; max-width: 280px;
  }
  /* 뷰포트: 스크린샷 원본 비율에 맞춰 유연하게 늘어남.
     image-slot은 shadow DOM 스타일이 우선이라 wrapper에 aspect-ratio를 걺. */
  .browser__viewport{
    position: relative;
    width: 100%;
    background: #0F0F11;
    overflow: hidden;
  }
  .browser__viewport image-slot{
    position: absolute; inset: 0;
    width: 100%; height: 100%;
  }

  .phones{
    display: flex; gap: 20px; justify-content: center;
    padding: 10px 0;
  }
  .phone{
    width: 170px;
    background: #0A0A0C;
    border: 1.5px solid #2A2A30;
    border-radius: 28px;
    padding: 8px;
    position: relative;
    box-shadow: 0 24px 50px -18px rgba(0,0,0,0.6);
  }
  .phone::before{
    content:""; position: absolute; top: 12px; left: 50%; transform: translateX(-50%);
    width: 44px; height: 12px; background: #000; border-radius: 8px; z-index: 2;
  }
  .phone image-slot{ aspect-ratio: 9/19.5; border-radius: 20px; overflow: hidden; }

  /* ---- Mobile-optimized web (모바일 브라우저 프레임) ---- */
  .web__stage--mobile{
    padding: 60px 40px;
  }
  .mweb{
    display: flex; justify-content: center;
    position: relative; z-index: 1;
  }
  .mweb__phone{
    width: 320px;
    background: #0A0A0C;
    border: 1.5px solid #2A2A30;
    border-radius: 42px;
    padding: 12px 10px;
    position: relative;
    box-shadow: 0 30px 60px -18px rgba(0,0,0,0.7);
  }
  .mweb__notch{
    position: absolute; top: 18px; left: 50%; transform: translateX(-50%);
    width: 100px; height: 26px; background: #000; border-radius: 14px; z-index: 3;
  }
  .mweb__bar{
    display: flex; align-items: center; justify-content: center; gap: 8px;
    height: 52px; padding-top: 20px;
    background: #17171A;
    border-radius: 32px 32px 0 0;
    border-bottom: 1px solid var(--line-2);
    position: relative;
    z-index: 2;
  }
  .mweb__lock{
    font-size: 9px; opacity: 0.6;
  }
  .mweb__url{
    font-family: var(--f-mono); font-weight: 600; font-size: 11px;
    color: var(--fg-2);
    letter-spacing: 0;
  }
  .mweb__viewport{
    position: relative;
    background: #0F0F11;
    height: 620px;
    overflow: hidden;
    /* 세로 스크롤 가능한 모바일 웹 느낌 — 이미지가 세로로 길면 상단만 보이고 스크롤로 나머지 확인 */
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--mute-2) transparent;
  }
  .mweb__viewport::-webkit-scrollbar{ width: 3px; }
  .mweb__viewport::-webkit-scrollbar-thumb{ background: var(--mute-2); }
  .mweb__viewport:hover::-webkit-scrollbar-thumb{ background: var(--acc); }
  /* detail-image-slot 모바일 웹 뷰포트에 맞춤 */
  .mweb__viewport detail-image-slot{
    display: block;
    width: 100%;
    background: transparent;
  }
  .mweb__viewport detail-image-slot .dis__empty{
    min-height: 620px; /* 뷰포트 전체 높이만큼 드롭 영역 확보 */
    padding: 20px;
  }
  .mweb__viewport detail-image-slot .dis__cap{
    font-size: 12px;
  }
  .mweb__home{
    height: 26px;
    background: #17171A;
    border-radius: 0 0 32px 32px;
    border-top: 1px solid var(--line-2);
    position: relative;
  }
  .mweb__home::after{
    content:""; position: absolute; bottom: 8px; left: 50%; transform: translateX(-50%);
    width: 120px; height: 4px; background: #444; border-radius: 2px;
  }

  /* 모바일 서브 페이지 3-up (폰 프레임) */
  .web__subs--mobile{
    grid-template-columns: repeat(3, 1fr);
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
    gap: 24px;
  }
  .web__subs--mobile .web__sub{ align-items: center; }
  .mweb__sub-phone{
    width: 100%;
    max-width: 200px;
    background: #0A0A0C;
    border: 1.5px solid #2A2A30;
    border-radius: 28px;
    padding: 8px 6px;
    position: relative;
    box-shadow: 0 20px 40px -18px rgba(0,0,0,0.6);
    overflow: hidden;
  }
  .mweb__sub-notch{
    position: absolute; top: 12px; left: 50%; transform: translateX(-50%);
    width: 56px; height: 14px; background: #000; border-radius: 8px; z-index: 2;
  }
  .mweb__sub-viewport{
    position: relative;
    aspect-ratio: 9/19.5;
    border-radius: 20px;
    overflow: hidden;
    background: #0F0F11;
  }
  .mweb__sub-viewport detail-image-slot{
    display: block;
    width: 100%;
    height: 100%;
    background: transparent;
    overflow-y: auto;
    scrollbar-width: none;
  }
  .mweb__sub-viewport detail-image-slot::-webkit-scrollbar{ display: none; }
  .mweb__sub-viewport detail-image-slot .dis__empty{
    min-height: 100%;
    padding: 12px;
  }
  .mweb__sub-viewport detail-image-slot .dis__cap{ font-size: 10px; }
  .mweb__sub-viewport detail-image-slot .dis__sub{ font-size: 8px; }

  /* Web 서브 페이지 3-up (1920×1080 = 16:9) */
  .web__subs{
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 20px;
  }
  @media (max-width: 720px){
    .web__subs{ grid-template-columns: 1fr; gap: 12px; }
  }
  .web__sub{ display: flex; flex-direction: column; gap: 8px; }
  .web__sub-frame{
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    background: var(--bg-hi);
    overflow: hidden;
    border: 1px solid var(--line);
    transition: border-color .18s ease;
  }
  .web__sub:hover .web__sub-frame{ border-color: var(--line-2); }
  .web__sub-frame image-slot{
    position: absolute; inset: 0;
    width: 100%; height: 100%;
  }
  /* detail-image-slot 을 서브프레임에 넣으면 프레임 폭에 맞춰 이미지 원본 비율대로 흐름 */
  .web__sub-frame{ height: auto !important; aspect-ratio: 16/9; }
  .web__sub-frame detail-image-slot{
    display: block;
    width: 100%;
    background: transparent;
    position: static;
  }
  .web__sub-frame detail-image-slot .dis__empty{
    min-height: 0;
    aspect-ratio: 16/9;
    padding: 12px;
  }
  .web__sub-frame detail-image-slot .dis__cap{ font-size: 11px; }
  .web__sub-frame detail-image-slot .dis__sub{ font-size: 9px; }
  .web__sub-cap{
    font-family: var(--f-mono); font-weight: 600; font-size: 10.5px;
    color: var(--mute); letter-spacing: 0.06em;
    text-transform: uppercase;
  }

  /* Web / App 프로젝트 컨셉 소개 블록 */
  .web__intro{
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 60px;
    padding-top: 32px;
    margin-top: 4px;
    border-top: 1px solid var(--line);
  }
  @media (max-width: 720px){
    .web__intro{ grid-template-columns: 1fr; gap: 24px; }
  }
  .web__intro-meta{
    display: flex; flex-direction: column; gap: 20px;
  }
  .web__intro-block{
    display: flex; flex-direction: column; gap: 6px;
  }
  .web__intro-block .k{
    font-family: var(--f-mono); font-weight: 600; font-size: 10.5px;
    color: var(--mute); letter-spacing: 0.1em;
    text-transform: uppercase;
  }
  .web__intro-block .v{
    font-family: var(--f-kr); font-weight: 400;
    font-size: 14px;
    color: var(--fg);
    line-height: 1.5;
  }
  .web__intro-tags{
    display: flex; flex-wrap: wrap; gap: 5px;
    margin-top: 2px;
  }
  .web__intro-tags span{
    font-family: var(--f-mono); font-weight: 600; font-size: 10.5px;
    color: var(--mute);
    padding: 4px 9px;
    border: 1px solid var(--line-2);
    border-radius: 999px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    transition: color .18s ease, border-color .18s ease;
  }
  .web__intro-tags span:hover{
    color: var(--acc); border-color: var(--acc);
  }
  .web__intro-text{
    font-family: var(--f-kr); font-weight: 300;
    font-size: 15px; line-height: 1.85;
    color: var(--fg-2);
    max-width: 640px;
    letter-spacing: -0.005em;
  }

  /* =========================================================
     04 · DETAIL PAGE
     ========================================================= */
  .dp{
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px 32px;
  }
  @media (max-width: 1000px){ .dp{ grid-template-columns: repeat(2, 1fr); } }
  @media (max-width: 640px){ .dp{ grid-template-columns: 1fr; } }
  .dp__col{ display: flex; flex-direction: column; gap: 12px; }
  .dp__head{
    display: flex; justify-content: space-between; align-items: baseline;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--line);
  }
  .dp__head .n{
    font-family: var(--f-en); font-weight: 400; font-size: 15px;
    letter-spacing: -0.01em;
  }
  .dp__head .m{
    font-family: var(--f-mono); font-weight: 600; font-size: 11px; color: var(--mute);
    letter-spacing: 0.06em; text-transform: uppercase;
  }
  .dp__viewport{
    position: relative;
    height: 620px;
    overflow-y: auto;
    background: var(--bg-hi);
    scrollbar-width: thin;
    scrollbar-color: var(--mute-2) transparent;
  }
  .dp__viewport::-webkit-scrollbar{ width: 3px; }
  .dp__viewport::-webkit-scrollbar-thumb{ background: var(--mute-2); }
  .dp__viewport:hover::-webkit-scrollbar-thumb{ background: var(--acc); }
  /* 하단 페이드 — 뷰포트 하단에서 배경색으로 자연스럽게 사라지는 효과 */
  .dp__fade{
    position: sticky;
    bottom: 0;
    left: 0; right: 0;
    height: 140px;
    margin-top: -140px;
    background: linear-gradient(
      to bottom,
      rgba(11, 11, 12, 0)   0%,
      rgba(11, 11, 12, 0.4) 40%,
      rgba(11, 11, 12, 0.85) 75%,
      rgba(11, 11, 12, 1)   100%
    );
    pointer-events: none;
    z-index: 2;
  }

  /* detail-image-slot — 이미지는 폭에 맞춰 원본 비율대로 자연스럽게 흐름 */
  detail-image-slot{
    display: block;
    width: 100%;
    position: relative;
    background: var(--bg-hi);
  }
  detail-image-slot .dis__inner{
    position: relative;
    width: 100%;
  }
  detail-image-slot .dis__img{
    display: block;
    width: 100%;
    height: auto;
    max-width: 100%;
    /* 이미지 원본 비율 그대로 흐름 — 왜곡 없음 */
  }
  detail-image-slot .dis__empty{
    min-height: 2200px;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer;
    padding: 40px 20px;
    background:
      repeating-linear-gradient(45deg,
        rgba(255,255,255,0.015) 0 8px,
        transparent 8px 16px);
    transition: background .18s ease;
  }
  detail-image-slot.is-over .dis__empty,
  detail-image-slot .dis__empty:hover{
    background:
      repeating-linear-gradient(45deg,
        rgba(217,255,59,0.06) 0 8px,
        transparent 8px 16px);
  }
  detail-image-slot .dis__hint{
    text-align: center;
    font-family: var(--f-mono);
    font-weight: 600;
    color: var(--mute);
  }
  detail-image-slot .dis__cap{
    font-family: var(--f-kr); font-weight: 300;
    font-size: 13px; color: var(--fg-2);
    margin-bottom: 8px;
  }
  detail-image-slot .dis__sub{
    font-size: 10px; letter-spacing: 0.12em;
    color: var(--acc);
  }
  detail-image-slot .dis__ctl{
    position: sticky; top: 8px;
    display: flex; gap: 4px;
    justify-content: flex-end;
    padding: 8px;
    opacity: 0;
    transition: opacity .18s ease;
    pointer-events: none;
    z-index: 3;
  }
  detail-image-slot.has-image:hover .dis__ctl{
    opacity: 1;
    pointer-events: auto;
  }
  detail-image-slot .dis__ctl button{
    font-family: var(--f-mono); font-weight: 600; font-size: 10px;
    letter-spacing: 0.06em; text-transform: uppercase;
    padding: 5px 10px;
    background: rgba(0,0,0,0.7);
    color: var(--fg);
    border: 1px solid var(--line-2);
    border-radius: 3px;
    cursor: pointer;
    backdrop-filter: blur(6px);
  }
  detail-image-slot .dis__ctl button:hover{
    background: var(--acc);
    color: var(--acc-ink);
    border-color: var(--acc);
  }
  detail-image-slot .dis__err{
    position: sticky;
    bottom: 12px;
    margin: 0 12px 12px auto;
    display: inline-block;
    padding: 8px 12px;
    background: rgba(255, 80, 80, 0.15);
    border: 1px solid rgba(255, 80, 80, 0.5);
    color: #FFB0B0;
    font-family: var(--f-kr); font-weight: 400;
    font-size: 12px;
    z-index: 4;
    max-width: calc(100% - 24px);
  }

  /* =========================================================
     05 · BANNER — real ad sizes, masonry
     ========================================================= */
  .bn{
    columns: 300px;
    column-gap: 20px;
  }
  .bn__item{
    break-inside: avoid;
    margin: 0 0 20px;
    display: block;
  }
  .bn__cap{
    display: flex; justify-content: space-between; align-items: baseline;
    padding-bottom: 8px; margin-bottom: 8px;
    border-bottom: 1px solid var(--line);
    font-family: var(--f-mono); font-weight: 600; font-size: 10.5px; color: var(--mute);
    letter-spacing: 0.06em; text-transform: uppercase;
  }
  .bn__cap b{ color: var(--fg); font-weight: 500; }
  .bn__frame{
    background: var(--bg-hi);
    position: relative;
    transition: outline .18s ease;
    outline: 1px solid transparent;
    outline-offset: 0;
    width: 100%;
  }
  .bn__item:hover .bn__frame{ outline-color: var(--acc); }
  /* 배너에 들어간 detail-image-slot: 이미지 있으면 원본 비율대로 늘어남 */
  .bn__frame detail-image-slot{
    display: block;
    width: 100%;
    background: transparent;
  }
  /* 배너에서 빈 상태일 때 광고 규격 비율 유지 (min-height 2200px 오버라이드) */
  .bn__frame detail-image-slot .dis__empty{
    min-height: 0;
    aspect-ratio: 970/250; /* fallback — 각 슬롯에서 style로 override */
    padding: 12px;
  }
  .bn__frame detail-image-slot .dis__hint{
    font-size: 10px;
  }
  .bn__frame detail-image-slot .dis__cap{
    font-size: 11px; margin-bottom: 4px;
  }
  .bn__frame detail-image-slot .dis__sub{
    font-size: 9px;
  }
  .bn__size{
    padding-top: 8px;
    font-family: var(--f-mono); font-weight: 600; font-size: 10.5px; color: var(--mute);
    letter-spacing: 0.04em;
    text-align: right;
  }

  /* =========================================================
     06 · AI IMAGE
     ========================================================= */
  .ai{
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
  }
  @media (max-width: 1000px){ .ai{ grid-template-columns: repeat(3, 1fr); } }
  @media (max-width: 720px){ .ai{ grid-template-columns: repeat(2, 1fr); } }
  .ai__cell{ position: relative; aspect-ratio: 1/1; overflow: hidden; display: flex; }
  .ai__cell.ai__feature{ aspect-ratio: auto; }
  .ai__cell image-slot{ height: 100%; }
  /* AI 셀의 detail-image-slot: 셀 전체를 채우고 이미지는 cover 크롭.
     정사각형 그리드에는 원본 비율보다 셀 채움이 자연스러움. */
  .ai__cell detail-image-slot{
    display: block;
    width: 100%;
    height: 100%;
    background: transparent;
    position: relative;
  }
  .ai__cell detail-image-slot .dis__inner{
    width: 100%; height: 100%;
    position: relative;
  }
  /* 이미지: 셀에 꽉 채우도록 cover crop */
  .ai__cell detail-image-slot .dis__img{
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    object-position: 50% 50%;
  }
  .ai__cell detail-image-slot .dis__empty{
    min-height: 0;
    aspect-ratio: 1/1;
    height: 100%;
    padding: 12px;
  }
  .ai__cell detail-image-slot .dis__cap{ font-size: 11px; }
  .ai__cell detail-image-slot .dis__sub{ font-size: 9px; }
  .ai__cell.ai__feature detail-image-slot .dis__empty{ aspect-ratio: 1/1; min-height: 400px; }
  .ai__cell .idx{
    position: absolute; top: 8px; left: 8px;
    font-family: var(--f-mono); font-weight: 600; font-size: 10px; color: var(--fg);
    letter-spacing: 0.06em;
    padding: 3px 6px; background: rgba(0,0,0,0.4);
    backdrop-filter: blur(6px);
    opacity: 0; transition: opacity .18s ease;
  }
  .ai__cell:hover .idx{ opacity: 1; }
  .ai__feature{ grid-column: span 2; grid-row: span 2; aspect-ratio: auto !important; }
  @media (max-width: 720px){ .ai__feature{ grid-column: span 2; grid-row: span 1; } }

  /* =========================================================
     07 · 3D VIDEO
     ========================================================= */
  .vid{ display: flex; flex-direction: column; gap: 20px; }
  .vid__hero{
    position: relative; aspect-ratio: 16/9;
    background: #050506; overflow: hidden;
    border: 1px solid var(--line);
  }
  .vid__frame{
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    border: 0;
    display: block;
  }
  .vid__thumbs{
    display: grid; grid-template-columns: repeat(3,1fr); gap: 20px;
  }
  @media (max-width: 720px){ .vid__thumbs{ grid-template-columns: 1fr; } }
  .vid__thumb{ display: flex; flex-direction: column; gap: 10px; }
  .vid__thumb image-slot{ aspect-ratio: 16/9; }
  .vid__thumb .cap{
    display: flex; justify-content: space-between; align-items: baseline;
    font-family: var(--f-mono); font-weight: 600; font-size: 11px; color: var(--mute);
    letter-spacing: 0.06em; text-transform: uppercase;
  }
  .vid__thumb .cap b{ color: var(--fg); font-weight: 500; }

  /* =========================================================
     08 · CATALOG
     ========================================================= */
  .cat{ display: flex; flex-direction: column; gap: 100px; }
  .cat__item{
    display: grid; grid-template-columns: 1fr 1.4fr;
    gap: 60px; align-items: center;
  }
  .cat__item:nth-child(even){ grid-template-columns: 1.4fr 1fr; }
  .cat__item:nth-child(even) .cat__info{ order: 2; }
  .cat__item:nth-child(even) .cat__spread{ order: 1; }
  @media (max-width: 900px){
    .cat__item, .cat__item:nth-child(even){ grid-template-columns: 1fr; gap: 24px; }
    .cat__item:nth-child(even) .cat__info{ order: 0; }
    .cat__item:nth-child(even) .cat__spread{ order: 1; }
  }
  /* 스프레드: 좌/우 페이지가 각자 이미지 비율대로 늘어나되 나란히 정렬.
     고정 aspect-ratio를 없애서 이미지가 잘리지 않고 원본 비율로 표시됨. */
  .cat__spread{
    display: grid; grid-template-columns: 1fr 1fr;
    background: #050506;
    border: 1px solid var(--line-2);
    position: relative;
    box-shadow: 0 40px 80px -30px rgba(0,0,0,0.85);
    align-items: stretch;
  }
  .cat__page{
    position: relative;
    background: #0F0F11;
    min-width: 0; /* grid overflow 방지 */
  }
  .cat__page detail-image-slot{
    display: block;
    width: 100%;
    background: transparent;
  }
  /* 카탈로그 empty 상태 힌트 스타일 (배너와 동일하게 컴팩트) */
  .cat__page detail-image-slot .dis__empty{
    min-height: 0;
    padding: 20px;
  }
  .cat__spread::after{
    content:""; position: absolute; top: 0; bottom: 0; left: 50%; width: 2px;
    background: linear-gradient(to right, rgba(0,0,0,0.4), rgba(0,0,0,0.9), rgba(0,0,0,0.4));
    transform: translateX(-1px);
    pointer-events: none;
    z-index: 2;
  }
  .cat__label{
    font-family: var(--f-mono); font-weight: 600; font-size: 11px; color: var(--mute);
    letter-spacing: 0.08em; text-transform: uppercase;
    margin-bottom: 12px;
  }
  .cat__label b{ color: var(--acc); font-weight: 500; }
  .cat__name{
    font-family: var(--f-en); font-weight: 300;
    font-size: clamp(26px, 3vw, 40px);
    letter-spacing: -0.02em; line-height: 1.1;
  }
  .cat__desc{
    font-family: var(--f-kr); font-weight: 300;
    margin-top: 16px; color: var(--fg-2);
    font-size: 14.5px; line-height: 1.7;
    max-width: 460px;
  }
  .cat__specs{
    display: flex; gap: 32px; flex-wrap: wrap;
    padding-top: 20px; margin-top: 20px;
    border-top: 1px solid var(--line);
    font-family: var(--f-mono); font-weight: 600; font-size: 11px; color: var(--mute);
    text-transform: uppercase; letter-spacing: 0.06em;
  }
  .cat__specs b{ color: var(--fg); font-weight: 500; display: block; margin-top: 2px; }

  /* =========================================================
     09 · CONTACT
     ========================================================= */
  .ct__lead{
    font-family: var(--f-en); font-weight: 200;
    font-size: clamp(48px, 8vw, 120px);
    letter-spacing: -0.045em; line-height: 0.98;
    padding-bottom: 60px;
    border-bottom: 1px solid var(--line);
  }
  .ct__lead a{
    background: linear-gradient(currentColor, currentColor) 0 96%/0 1px no-repeat;
    transition: background-size .4s ease, color .18s ease;
  }
  .ct__lead a:hover{ background-size: 100% 1px; color: var(--acc); }
  .ct__grid{
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px;
    padding: 40px 0;
  }
  @media (max-width: 900px){ .ct__grid{ grid-template-columns: repeat(2, 1fr); } }
  @media (max-width: 480px){ .ct__grid{ grid-template-columns: 1fr; } }
  .ct__cell b{
    display: block; font-family: var(--f-en); font-size: 11px;
    color: var(--mute); text-transform: uppercase; letter-spacing: 0.12em;
    margin-bottom: 10px;
    font-weight: 600;
  }
  .ct__cell .v{
    font-family: var(--f-en); font-weight: 400;
    font-size: 15px; color: var(--fg); line-height: 1.5;
  }
  .ct__cell .v a:hover{ color: var(--acc); }
  .ct__foot{
    padding: 24px 0;
    display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px;
    border-top: 1px solid var(--line);
    font-family: var(--f-mono); font-weight: 600; font-size: 10.5px; color: var(--mute);
    letter-spacing: 0.08em; text-transform: uppercase;
  }
  .ct__foot .acc{ color: var(--acc); }

  /* =========================================================
     Fade-in
     ========================================================= */
  .fade-in{ opacity: 0; transform: translateY(14px); transition: opacity .8s cubic-bezier(.2,.6,.2,1), transform .8s cubic-bezier(.2,.6,.2,1); }
  .fade-in.in{ opacity: 1; transform: none; }