:root{
    --bg:#f7f7f7;
    --navy:#0e2e41;
    --orange:#D4603A;
    --body:#2d3748;
    --rule: rgba(14,46,65,.18);
    --rule-strong: rgba(14,46,65,.55);
    --jp:'Noto Sans JP', system-ui, sans-serif;
    --serif:'Noto Serif JP', serif;
    --en:'Montserrat', system-ui, sans-serif;
    --maxw: 1200px;
    --pad: 64px;
  }

  *{box-sizing:border-box}
  html,body{margin:0;padding:0;background:var(--bg);color:var(--body);}
  body{
    font-family:var(--jp);
    font-weight:400;
    font-size:14px;
    line-height:1.7;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}

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

  /* ───── HEADER ───── */
  .site-header{
    padding:28px 0 24px;
    border-bottom:1px solid var(--rule);
  }
  .header-row{
    display:grid;
    grid-template-columns: 200px 1fr auto;
    gap:48px;
    align-items:center;
  }
  .brand{
    display:inline-flex;
    align-items:center;
    color:var(--navy);
  }
  .brand img{
    height:48px;
    width:auto;
    display:block;
  }
  .search{
    display:flex;
    align-items:center;
    gap:10px;
    border:1px solid var(--rule);
    background:#fff;
    padding:10px 16px;
    max-width:520px;
    width:100%;
  }
  .search svg{flex:none;color:var(--rule-strong)}
  .search input{
    flex:1;
    border:0;
    outline:0;
    background:transparent;
    font:inherit;
    color:var(--body);
    font-size:13px;
  }
  .search input::placeholder{color:#8a98a3}
  .nav{
    display:flex;
    gap:36px;
    font-weight:500;
    color:var(--navy);
    font-size:14px;
  }
  .nav a{position:relative;padding-bottom:8px}
  .nav a.active{color:var(--navy)}
  .nav a.active::after{
    content:"";
    position:absolute;left:0;right:0;bottom:0;
    height:2px;background:var(--orange);
  }

  /* ───── HERO QUOTE STRIP ───── */
  .hero{
    position:relative;
    padding:84px 0 96px;
    border-bottom:1px solid var(--rule);
  }
  .hero h1{
    margin:0;
    font-family:var(--serif);
    font-weight:500;
    color:var(--navy);
    font-size:42px;
    line-height:1.55;
    letter-spacing:.02em;
  }
  .hero h1 .ln{display:block}
  .hero .halfdisc{
    position:absolute;
    right:var(--pad);
    bottom:32px;
    width:46px;height:23px;
  }

  /* ───── SECTION FRAME ───── */
  .section{
    display:grid;
    grid-template-columns: 168px 1fr;
    gap:0;
    padding:48px 0;
    border-bottom:1px solid var(--rule);
  }
  .section-label{
    color:var(--navy);
    font-weight:500;
    font-size:13px;
    line-height:1.6;
  }
  .section-label .en{
    display:block;
    font-family:var(--en);
    font-weight:500;
    font-size:11px;
    letter-spacing:.12em;
    color:var(--navy);
    opacity:.8;
    margin-top:6px;
  }
  .section-label .bar{
    display:block;
    width:24px;height:2px;background:var(--orange);
    margin-top:12px;
  }

  /* ───── LATEST ───── */
  .latest .section-body{
    display:grid;
    grid-template-columns: 120px 1fr;
    gap:40px;
    align-items:start;
  }
  .vol{
    color:var(--navy);
    font-family:var(--en);
  }
  .vol .label{
    font-weight:500;
    font-size:14px;
    letter-spacing:.04em;
  }
  .vol .num{
    display:block;
    font-family:var(--serif);
    font-weight:500;
    font-size:78px;
    line-height:1;
    margin-top:6px;
    letter-spacing:.01em;
  }
  .vol .date{
    margin-top:18px;
    font-family:var(--en);
    font-weight:500;
    font-size:11px;
    letter-spacing:.12em;
    color:var(--navy);
    opacity:.75;
  }
  .articles{
    list-style:none;margin:0;padding:0;
    border-top:1px solid var(--rule);
  }
  .article{
    display:grid;
    grid-template-columns: 220px 1fr 80px;
    gap:24px;
    padding:22px 16px 20px;
    margin:0 -16px;
    border-bottom:1px solid var(--rule);
    align-items:start;
    transition:background .15s;
  }
  a.article{cursor:pointer;}
  a.article:hover{background:rgba(14,46,65,.04);}
  .article:last-child{border-bottom:0}
  .article .left{display:flex;flex-direction:column;gap:8px}
  .cat{
    display:flex;align-items:center;gap:8px;
    font-family:var(--en);
    font-weight:700;
    font-size:11px;
    letter-spacing:.16em;
    color:var(--navy);
  }
  .cat .dot{
    width:8px;height:8px;background:var(--orange);
    flex:none;
  }
  .article h3{
    margin:0;
    font-family:var(--jp);
    font-weight:700;
    font-size:16px;
    line-height:1.55;
    color:var(--navy);
    letter-spacing:.01em;
  }
  .article p{
    margin:0;
    font-size:13px;
    line-height:1.85;
    color:var(--body);
  }
  .article .date{
    font-family:var(--en);
    font-weight:500;
    font-size:11px;
    letter-spacing:.08em;
    color:var(--navy);
    opacity:.7;
    text-align:right;
    padding-top:2px;
    white-space:nowrap;
  }

  /* ───── CATEGORIES ───── */
  .cats .tiles{
    display:grid;
    grid-template-columns: repeat(4, 1fr);
    gap:16px;
  }
  .tile{
    background:var(--navy);
    color:#fff;
    padding:24px 22px 22px;
    min-height:96px;
    display:flex;
    flex-direction:column;
    justify-content:space-between;
  }
  .tile .ja{
    font-family:var(--jp);
    font-weight:700;
    font-size:22px;
    letter-spacing:.04em;
  }
  .tile .n{
    align-self:flex-end;
    font-family:var(--en);
    font-weight:500;
    font-size:18px;
    color:var(--orange);
    letter-spacing:.04em;
  }

  /* ───── YOUTUBE ───── */
  .yt .section-body{
    display:flex;
    flex-direction:column;
    gap:24px;
  }
  .yt-grid{
    display:grid;
    grid-template-columns: 1fr 1fr;
    gap:24px;
  }
  .yt-kicker{
    font-family:var(--en);
    font-weight:700;
    font-size:11px;
    letter-spacing:.16em;
    color:var(--navy);
    margin-bottom:10px;
  }
  .yt-frame{
    position:relative;
    width:100%;
    aspect-ratio: 16 / 9;
    background:var(--navy);
    overflow:hidden;
  }
  .yt-frame iframe{
    position:absolute;inset:0;
    width:100%;height:100%;
    border:0;
  }
  .yt-loading{
    position:absolute;inset:0;
    display:flex;align-items:center;justify-content:center;
    color:rgba(255,255,255,.7);
    font-size:12px;
    letter-spacing:.08em;
  }
  .yt-title{
    margin-top:12px;
    font-weight:700;
    font-size:14px;
    line-height:1.55;
    color:var(--navy);
  }

  /* ───── REFERENCE 1.5% ───── */
  .ref .section-body{
    display:grid;
    grid-template-columns: 220px 1fr auto;
    gap:32px;
    align-items:center;
  }
  .ref .big{
    font-family:var(--serif);
    font-weight:500;
    color:var(--orange);
    font-size:88px;
    line-height:1;
    letter-spacing:-.01em;
  }
  .ref .copy{
    color:var(--body);
    font-size:13px;
    line-height:1.85;
    max-width:440px;
  }
  .link{
    display:inline-flex;align-items:center;gap:10px;
    color:var(--navy);
    font-weight:500;
    font-size:13px;
    border-bottom:1px solid var(--navy);
    padding:4px 2px;
    align-self:end;
  }
  .link .arrow{display:inline-block;width:18px;height:1px;background:var(--navy);position:relative}
  .link .arrow::after{
    content:"";position:absolute;right:0;top:-3px;
    width:7px;height:7px;
    border-top:1px solid var(--navy);
    border-right:1px solid var(--navy);
    transform:rotate(45deg);
  }

  /* ───── COLUMN (navy) ───── */
  .column{
    background:var(--navy);
    color:#fff;
    padding:48px var(--pad);
    margin:0 calc(50% - 50vw);
    position:relative;
    overflow:hidden;
  }
  .column-inner{
    max-width:var(--maxw);
    margin:0 auto;
    display:grid;
    grid-template-columns: 168px 1fr 1fr;
    gap:48px;
    align-items:start;
  }
  .column .label{color:#fff}
  .column .label .en{opacity:.7}
  .column .label .bar{background:var(--orange)}
  .column .pull{
    font-family:var(--serif);
    font-weight:500;
    font-size:26px;
    line-height:1.7;
    color:#fff;
    letter-spacing:.04em;
    position:relative;
  }
  .column .pull .scribble{
    display:block;
    margin-top:10px;
    width:160px;height:14px;
    color:var(--orange);
  }
  .column .body h3{
    margin:0 0 18px;
    font-family:var(--serif);
    font-weight:500;
    font-size:22px;
    line-height:1.7;
    color:#fff;
    letter-spacing:.02em;
  }
  .column .body p{
    color:rgba(255,255,255,.82);
    font-size:13px;
    line-height:1.95;
    margin:0;
  }
  .column .meta{
    margin-top:36px;
    display:flex;justify-content:space-between;align-items:end;
    font-family:var(--en);
    font-weight:500;
    font-size:11px;
    letter-spacing:.1em;
    color:rgba(255,255,255,.7);
    border-top:1px solid rgba(255,255,255,.18);
    padding-top:14px;
  }
  .column .meta .name{
    font-family:var(--jp);
    font-weight:700;
    font-size:14px;
    color:#fff;
    letter-spacing:.04em;
  }
  .column .meta .name span{
    display:block;
    font-family:var(--jp);
    font-weight:400;
    font-size:11px;
    color:rgba(255,255,255,.6);
    letter-spacing:.1em;
    margin-top:4px;
  }
  .column .corner{
    position:absolute;
    right:-24px;bottom:-30px;
    width:170px;height:170px;
    color:rgba(255,255,255,.05);
  }

  /* ───── EMAIL MODAL ───── */
  .email-modal{
    position:fixed;inset:0;background:rgba(14,46,65,.85);
    display:none;align-items:center;justify-content:center;z-index:200;padding:24px;
  }
  .email-modal.open{display:flex;}
  .email-card{
    background:#fff;max-width:480px;width:100%;padding:48px 40px;position:relative;
  }
  .email-close{
    position:absolute;top:14px;right:16px;font-size:22px;color:var(--navy);line-height:1;
  }
  .email-kicker{
    font-family:var(--en);font-size:11px;font-weight:700;letter-spacing:.18em;color:var(--orange);margin:0 0 12px;
  }
  .email-card h3{
    margin:0 0 14px;font-family:var(--serif);font-size:22px;color:var(--navy);line-height:1.5;
  }
  .email-lead{
    margin:0 0 24px;font-size:13px;line-height:1.8;color:var(--body);
  }
  .email-form{display:flex;gap:8px;margin-bottom:12px;}
  .email-form input{
    flex:1;padding:12px 14px;border:1px solid var(--rule-strong);font-family:var(--jp);font-size:14px;
  }
  .email-form button{
    background:var(--navy);color:#fff;padding:12px 20px;font-family:var(--jp);font-weight:700;font-size:13px;letter-spacing:.04em;
  }
  .email-result{margin:0 0 8px;font-size:12px;color:var(--navy);min-height:1.4em;}
  .email-note{margin:0;font-size:11px;color:var(--rule-strong);}
  @media(max-width:640px){
    .email-card{padding:32px 24px;}
    .email-card h3{font-size:18px;}
    .email-form{flex-direction:column;}
  }

  /* ───── DIAGNOSE ───── */
  .diagnose-lead{
    margin:0 0 20px;font-size:13px;color:var(--body);
  }
  .diagnose-list{
    list-style:none;margin:0;padding:0;
    display:grid;grid-template-columns:1fr 1fr;gap:0;
    border-top:1px solid var(--rule);
  }
  .diagnose-list li{
    border-bottom:1px solid var(--rule);
  }
  .diagnose-list li:nth-child(odd){
    border-right:1px solid var(--rule);
  }
  .diagnose-list a{
    display:flex;justify-content:space-between;align-items:center;gap:16px;
    padding:18px 20px;
    transition:background .15s;
  }
  .diagnose-list a:hover{background:rgba(14,46,65,.03);}
  .diagnose-list .q{
    font-family:var(--serif);font-weight:700;font-size:15px;color:var(--navy);
  }
  .diagnose-list .a{
    font-size:12px;color:var(--orange);font-weight:500;white-space:nowrap;
  }
  @media(max-width:640px){
    .diagnose-list{grid-template-columns:1fr;}
    .diagnose-list li:nth-child(odd){border-right:0;}
    .diagnose-list a{flex-direction:column;align-items:flex-start;gap:6px;padding:14px 4px;}
    .diagnose-list .a{font-size:11px;}
  }

  /* ───── COURSE BANNER ───── */
  .course .section-body{
    display:grid;
    grid-template-columns: 1fr auto;
    gap:24px;
    align-items:center;
    padding:6px 0;
  }
  .course .head{
    display:flex;flex-direction:column;gap:8px;
  }
  .course h2{
    margin:0;
    font-family:var(--jp);
    font-weight:700;
    font-size:26px;
    color:var(--navy);
    letter-spacing:.04em;
  }
  .course h2 .dash{
    display:inline-block;
    width:18px;height:1px;background:var(--navy);
    vertical-align:middle;
    margin:0 14px;
  }
  .course p{
    margin:0;
    font-size:13px;
    color:var(--body);
  }

  /* ───── TODAY'S PICK ───── */
  .pick .section-body{
    display:grid;
    grid-template-columns: 1.4fr 1fr;
    gap:32px;
    align-items:start;
  }
  .pick-frame{
    position:relative;
    width:100%;
    aspect-ratio: 16 / 9;
    background:var(--navy);
    overflow:hidden;
  }
  .pick-frame iframe{
    position:absolute;inset:0;
    width:100%;height:100%;
    border:0;
  }
  .pick-meta h3{
    margin:0 0 12px;
    font-family:var(--jp);
    font-weight:700;
    font-size:18px;
    line-height:1.55;
    color:var(--navy);
  }
  .pick-meta p{
    margin:0;
    font-size:13px;
    line-height:1.85;
    color:var(--body);
  }
  .pick-loading,.pick-empty,
  .video-loading,.video-empty,
  .archive-loading,.archive-empty{
    padding:24px 0;
    font-size:13px;
    color:var(--rule-strong);
  }

  /* ───── VIDEO GRID (LATEST) ───── */
  .yt-latest .section-body{
    display:flex;
    flex-direction:column;
    gap:20px;
  }
  .video-grid{
    display:grid;
    grid-template-columns: repeat(3, 1fr);
    gap:24px;
  }
  .video-card{
    display:block;
    cursor:pointer;
    transition:opacity .15s;
  }
  .video-card:hover{opacity:.75;}
  .video-thumb{
    width:100%;
    aspect-ratio: 16 / 9;
    overflow:hidden;
    background:var(--navy);
    margin-bottom:10px;
  }
  .video-thumb img{
    width:100%;
    height:100%;
    object-fit:cover;
  }
  .video-title{
    font-weight:700;
    font-size:13px;
    line-height:1.55;
    color:var(--navy);
  }

  /* ───── VIDEO ARCHIVE ───── */
  .archive .section-body{
    display:flex;
    flex-direction:column;
    gap:48px;
  }
  .archive-cat-title{
    margin:0 0 8px;
    font-family:var(--jp);
    font-weight:700;
    font-size:18px;
    color:var(--navy);
  }
  .archive-cat-desc{
    margin:0 0 18px;
    font-size:13px;
    line-height:1.85;
    color:var(--body);
  }
  .archive-list{
    list-style:none;margin:0;padding:0;
    display:grid;
    grid-template-columns: repeat(2, 1fr);
    gap:0;
    border-top:1px solid var(--rule);
  }
  .archive-item{
    display:grid;
    grid-template-columns: 140px 1fr;
    gap:14px;
    padding:14px 12px;
    border-bottom:1px solid var(--rule);
    align-items:start;
    cursor:pointer;
    transition:background .15s;
  }
  .archive-item:hover{background:rgba(14,46,65,.04);}
  .archive-thumb{
    width:140px;
    aspect-ratio: 16 / 9;
    overflow:hidden;
    background:var(--navy);
  }
  .archive-thumb img{
    width:100%;
    height:100%;
    object-fit:cover;
  }
  .archive-title{
    font-weight:700;
    font-size:13px;
    line-height:1.5;
    color:var(--navy);
    margin-bottom:4px;
  }
  .archive-platform{
    font-family:var(--en);
    font-weight:500;
    font-size:10px;
    letter-spacing:.12em;
    color:var(--orange);
    margin-bottom:6px;
  }
  .archive-note{
    margin:0;
    font-size:11px;
    line-height:1.7;
    color:var(--body);
    opacity:.85;
  }

  /* ───── FOOTER ───── */
  footer{
    text-align:center;
    padding:32px 0 40px;
    font-family:var(--en);
    font-weight:500;
    font-size:11px;
    letter-spacing:.18em;
    color:var(--navy);
    opacity:.6;
  }

  /* ───── MOBILE ───── */
  @media (max-width: 760px){
    :root{ --pad: 20px; }
    .header-row{
      grid-template-columns: 1fr auto;
      gap:14px;
    }
    .brand img{height:38px}
    .search{order:3;grid-column:1 / -1;max-width:none}
    .nav{gap:22px;font-size:13px}
    .hero{padding:48px 0 56px}
    .hero h1{font-size:26px;line-height:1.6}
    .hero .halfdisc{right:20px;bottom:18px;width:34px;height:17px}

    .section{
      grid-template-columns: 1fr;
      gap:18px;
      padding:36px 0;
    }
    .section-label{display:flex;align-items:baseline;gap:14px}
    .section-label .en{margin-top:0}
    .section-label .bar{display:none}

    .latest .section-body{
      grid-template-columns: 1fr;
      gap:0;
    }
    .vol{
      display:flex;align-items:baseline;gap:18px;
      padding-bottom:18px;border-bottom:1px solid var(--rule);
      margin-bottom:8px;
    }
    .vol .num{font-size:56px;margin:0}
    .vol .date{margin-top:0;margin-left:auto}

    .article{
      grid-template-columns: 1fr;
      gap:8px;
      padding:18px 0;
    }
    .article .date{text-align:left}

    .yt-grid{
      grid-template-columns: 1fr;
      gap:20px;
    }

    .cats .tiles{
      grid-template-columns: repeat(2, 1fr);
      gap:10px;
    }
    .tile{padding:18px 16px;min-height:80px}
    .tile .ja{font-size:18px}

    .ref .section-body{
      grid-template-columns: auto 1fr;
      grid-template-rows:auto auto;
      gap:14px 18px;
      align-items:start;
    }
    .ref .big{font-size:62px}
    .ref .copy{grid-column:1 / -1;font-size:12.5px}
    .link{grid-column:1 / -1;justify-self:start}

    .column-inner{
      grid-template-columns: 1fr;
      gap:24px;
    }
    .column .pull{font-size:20px}
    .column{padding:36px var(--pad)}

    .course .section-body{
      grid-template-columns: 1fr;
      gap:14px;
      align-items:start;
    }
    .course h2{font-size:20px}
    .course h2 .dash{margin:0 8px;width:14px}
    .link{align-self:flex-start}

    .pick .section-body{
      grid-template-columns: 1fr;
      gap:18px;
    }
    .pick-meta h3{font-size:16px}

    .video-grid{
      grid-template-columns: repeat(2, 1fr);
      gap:14px;
    }
    .video-title{font-size:12.5px}

    .archive .section-body{gap:36px}
    .archive-list{
      grid-template-columns: 1fr;
    }
    .archive-item{
      grid-template-columns: 100px 1fr;
      gap:12px;
      padding:12px 0;
    }
    .archive-thumb{width:100px}
    .archive-title{font-size:12.5px}
  }

/* ───── LIFF GATE / LOADING ───── */
.hidden{display:none !important}
.state{
  min-height:100vh;
  display:flex;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  padding:24px;
  background:var(--bg);
}
.spinner{
  width:32px;height:32px;
  border:2px solid rgba(14,46,65,.15);
  border-top-color:var(--navy);
  border-radius:50%;
  animation:spin .9s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
.loading-text{
  margin-top:18px;
  font-family:var(--jp);
  font-size:13px;
  color:var(--navy);
  letter-spacing:.06em;
}
.gate-card{
  max-width:440px;
  width:100%;
  text-align:center;
  padding:48px 28px;
  border-top:1px solid var(--rule);
  border-bottom:1px solid var(--rule);
}
.gate-kicker{
  margin:0 0 18px;
  font-family:var(--en);
  font-weight:700;
  font-size:11px;
  letter-spacing:.18em;
  color:var(--navy);
  opacity:.8;
}
.gate-card h1{
  margin:0 0 20px;
  font-family:var(--serif);
  font-weight:500;
  font-size:24px;
  line-height:1.6;
  color:var(--navy);
  letter-spacing:.04em;
}
.gate-lead{
  margin:0 0 32px;
  font-family:var(--jp);
  font-size:13px;
  line-height:1.95;
  color:var(--body);
}
.gate-btn-primary{
  display:inline-block;
  width:100%;
  padding:16px 20px;
  background:var(--navy);
  color:#fff;
  font-family:var(--jp);
  font-weight:700;
  font-size:14px;
  letter-spacing:.06em;
  margin-bottom:14px;
}
.gate-btn-secondary{
  display:inline-block;
  width:100%;
  padding:14px 20px;
  background:transparent;
  color:var(--navy);
  border:1px solid var(--rule-strong);
  font-family:var(--jp);
  font-weight:500;
  font-size:13px;
  letter-spacing:.04em;
}