@charset "utf-8";
@import "reboot.css";

/* =========================================================
   Base
   ========================================================= */
html{
  overflow-y: scroll;
  width: 100%;
}

body{
  color: #2B2B2B;
  font-size: 16px;
  font-family: "游ゴシック", YuGothic, "メイリオ", Meiryo, "ヒラギノ角ゴ ProN", "Hiragino Kaku Gothic ProN", "ヒラギノ角ゴ Pro", "Hiragino Kaku Gothic Pro", sans-serif;
  font-weight: 500;
  line-height: 1.5;
  border-top: solid 31px #3F355F;
  border-bottom: solid 31px #3F355F;
  text-align: center;
  background-color: #F4F5F7;
  width: 100%;
  min-width: 960px;
  margin: 0 auto;
  position: relative; /* for background layer */
}

a:link, a:visited{
  color: #5C6BC0;
  text-decoration: underline;
}
a:active, a:hover{
  color: #4B3F72;
  text-decoration: underline;
  opacity: .85;
  transition: all 0.25s ease;
}
a:focus{ outline: none; }

#sb-site{
  width: 100% !important;
  text-align: center;
  position: relative;
  z-index: 1;
}

.sp{ display: none !important; }
#toggle, .sb-slidebar{ display: none; }

/* =========================================================
   Background network (fixed, clipped above menu)
   - Image stays fixed while scrolling.
   - Hidden above the menu area using a dynamic clip top (CSS var).
   - Requires: <div id="bg-network" aria-hidden="true"></div> in HTML.
   - Requires JS to update --net-clip-top from nav bottom.
   ========================================================= */
:root{
  --net-clip-top: 100vh; /* updated by JS */
}

#bg-network{
  position: fixed;
  inset: 0;
  background-image: url("../image/network.png");
  background-repeat: no-repeat;
  background-position: right bottom;
  background-size: min(900px, 70vw);
  opacity: 0.08;
  pointer-events: none;
  z-index: 0;

  /* Hide everything above the menu bottom (dynamic) */
  -webkit-clip-path: inset(var(--net-clip-top) 0 0 0);
  clip-path: inset(var(--net-clip-top) 0 0 0);

  /* Soften the top edge of what remains visible */
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0) 0px, rgba(0,0,0,1) 48px);
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0) 0px, rgba(0,0,0,1) 48px);
}


/* =========================================================
   Header / Nav
   ========================================================= */
header{
  margin: -31px auto 0;
  width: 960px;
  height: 31px;
  display: flex;
  justify-content: space-between;
}
header h1{ margin: -10px 0 0; padding: 0; }
@media all and (-ms-high-contrast:none){
  header h1{ margin: -5px 0 0; }
}
header h1 img{ height: 26px; }
#lang{ height: 26px; margin: 2px 5px 0 0; }

nav{
  width: 100%;
  margin: 0;
  border-top: solid 1px #D8DAE0;
  border-bottom: solid 1px #D8DAE0;
  background: transparent !important; /* keep borders, remove full-width white bar */
}

/* =========================================================
   NAV (polished): equal spacing + clear clickability
   ========================================================= */

/* Pill-style menu container inside 960px column */
ul#menu{
  /* Keep the capsule, but let it shrink to the content so gaps look uniform */
  width: fit-content !important;
  max-width: 960px !important;
  min-width: 960px !important;
  margin: 10px auto !important;
  padding: 6px 10px !important;
  height: auto !important;

  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 10px !important;                 /* uniform gap between pills */
  flex-wrap: wrap !important;
  row-gap: 6px !important;
  list-style: none !important;

  background: rgba(255,255,255,0.72) !important;
  border: 1px solid rgba(216,218,224,0.90) !important;
  border-radius: 999px !important;
  box-shadow: 0 10px 24px rgba(0,0,0,0.06) !important;
  backdrop-filter: blur(8px);
}

@media all and (-ms-high-contrast:none){
  /* Preserve IE/Edge legacy tweak from original */
  ul#menu{ height: 46px; }
}

/* Natural width items (so pill-to-pill gaps are consistent) */
ul#menu li{
  flex: 0 0 auto !important;  
  width: 100px;
  background-image: none;
  text-align: center !important;
}


/* Link: make clickability obvious */
ul#menu li a{
  display: block !important;
  padding: 8px 12px !important;
  margin: 0;
  line-height: 1.1 !important;
  font-size: 15px !important;
  font-weight: 650 !important;
  color: #2B2B2B !important;
  text-decoration: none !important;

  border-radius: 999px !important;
  position: relative !important;
  background: transparent !important;
  transition: background 0.18s ease, color 0.18s ease, transform 0.18s ease !important;
}

/* Replace thin underline with pill highlight */
ul#menu li a::after{
  content: none !important;
}

ul#menu li a:hover{
  background: rgba(75,63,114,0.10) !important;
  color: #4B3F72 !important;
  transform: translateY(-1px) !important;
  opacity: 1 !important;
}

ul#menu li a.is-active{
  background: rgba(75,63,114,0.16) !important;
  color: #4B3F72 !important;
}

/* =========================================================
   Footer (centered)
   ========================================================= */
footer{
  margin: 32px auto 0;
  padding: 6px 0 11px;
  font-size: 13px;
  width: 960px;
  text-align: center; /* center copyright */
}
footer p{ text-indent: 0; }

/* =========================================================
   Page top button
   ========================================================= */
#page-top{
  display: block;
  position: fixed;
  z-index: 9999;
  bottom: 10px;
  right: 10px;
  width: 70px;
  height: 45px;
  padding: 15px 10px 10px;
  background: #2B2B2B;
  color: #fff;
  text-align: center;
  text-decoration: none;
  font-size: 20px;
  line-height: 20px;
  clear: both;
  opacity: .7;
}
#page-top:hover{ opacity: .8; }

.arrow{
  position: absolute;
  width: 20px;
  height: 20px;
  border: 2px solid #2B2B2B;
  border-left-color: #fff;
  border-top-color: #fff;
  top: 20px;
  left: 26px;
  transform: rotate(45deg);
}

@media print{
  #page-top{ display: none; }
}

/* =========================================================
   Top page layout
   ========================================================= */
#mainvisual{
  width: 960px;
  margin: 0 auto;
}

main.top{
  margin: 15px auto 0;
  padding-left: 2%;
  padding-right: 2%;
  text-align: left;
  background-color: transparent;
  width: 960px;
  display: flex;
  flex-direction: column; /* stacked */
  gap: 28px;
}

/* --- News card --- */
#news{
  margin: 10px 0 0;
  background: #FFFFFF;
  border: 1px solid #D8DAE0;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.06);
  padding: 22px 28px;
  min-height: 420px;      /* stable height */
  display: flex;
  flex-direction: column;
}

/* News header + year filter */
#news .news-head{
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
  position: relative;
  padding-bottom: 10px;
}
#news .news-head h2{
  margin: 0;
  padding: 0;
  border-bottom: none !important;
  flex: 1 1 auto;
}

/* purple rule spans under buttons */
#news .news-head::after{
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: #6A5C8F;
  border-radius: 1px;
}

#news .news-year{
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
  padding-bottom: 0;
  flex: 0 0 auto;
  position: relative;
}

#news .year-btn{
  appearance: none;
  border: 1px solid #D8DAE0;
  background: #FFFFFF;
  color: #000000;
  font-size: 15.5px;
  line-height: 1;
  padding: 7px 10px;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 0.08s ease, border-color 0.2s ease, color 0.2s ease;
}

#news .year-btn:hover{
  border-color: #6A5C8F;
  transform: translateY(-1px);
}
#news .year-btn.is-active{
  background: rgba(75, 63, 114, 0.16);   /* 明るめ紫 */
  border-color: rgba(75, 63, 114, 0.16);
}

/* Older dropdown */
#news details.news-older{ position: relative; }
#news details.news-older summary{ list-style: none; }
#news details.news-older summary::-webkit-details-marker{ display: none; }

#news .older-panel{
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  background: #FFFFFF;
  border: 1px solid #D8DAE0;
  border-radius: 12px;
  box-shadow: 0 12px 28px rgba(0,0,0,0.12);
  padding: 10px;
  display: grid;
  gap: 8px;
  min-width: 120px;
  z-index: 50;
}
#news .older-panel .year-btn{ width: 100%; }

/* News list area (fixed scroll) */
#news #newsList{
  margin: 0;
  padding: 12px 0 6px 0;
  flex: 1 1 auto;
  height: 320px;
  overflow-y: auto;
  list-style: none;
  text-align: left;
}
#news #newsList li{
  margin: 0 0 18px;
  background-image: none;
}

#news{
  font-size: 15.5px;
}

#news .date{
  font-weight: 750;
  color: #2B2B2B;
  font-size: 15.5px;
}

/* --- Message (non-card) --- */
#message{
  background: transparent;
  border: none;
  box-shadow: none;
  padding: 0;
  margin: 14px 0 0;
}
#message p{
  margin: 0 0 10px 0;
  text-indent: 0;
}

/* Hero copy with bold bar */
#message .hero-copy{
  margin: 0 0 10px 0;
  text-indent: 0;
  font-size: 24px;
  line-height: 1.3;
  font-weight: 750;
  color: #1E1E26;
  letter-spacing: 0;
  position: relative;
  padding-top: 12px;
}


#message .hero-copy::before{
  content: "";
  display: block;
  width: 64px;
  height: 6px;
  background: #4B3F72;
  border-radius: 3px;
  margin-bottom: 10px;
}
#message .hero-copy::after{ content: none !important; }

#message .hero-lead{
  margin: 0;
  text-indent: 0;
  font-size: 16px;
  line-height: 1.8;
  color: #2B2B2B;
}
#message .hero-lead strong{
  color: #4B3F72;
  font-weight: 700;
}


/* 強調ブロック（宣言文） */
#message .hero-emphasis{
  margin: 10px 0 12px 0;         /* 上下の間延び防止 */
  padding: 10px 0 10px 14px;     /* 左線の内側余白 */
  border-left: 2px solid rgba(78, 70, 140, 0.55);

  font-size: 18px;               /* 本文より少し大きく */
  line-height: 1.55;
  font-weight: 600;
  color: #3E3A66;

  letter-spacing: 0.01em;
  
}

/* モバイルで読みやすく */
@media (max-width: 640px){
  #message .hero-emphasis{
    font-size: 17px;
    padding-left: 12px;
    border-left-width: 2px;
  }
}

/* =========================================================
   Contact (right-aligned to News right edge)
   ========================================================= */
#contact{
  width: 960px;
  margin: 56px auto 0;
  text-align: right;
}
#contact h2{
  display: inline-block;
  margin: 0 0 10px 5px;
  padding: 0 0 10px 0;
  border-bottom: 2px solid #6A5C8F;
  color: #4B3F72;
  font-size: 20px;
  font-weight: 900;
  text-align: right;
}
#contact .contact-line,
#contact .contact-actions{
  margin: 6px 10px 0 10px;
  text-indent: 0;
  line-height: 1.7;
  text-align: right;
}
#contact .contact-actions{ margin-top: 14px; }

#contact .map-button{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid #6A5C8F;
  color: #FFFFFF;
  background: #4B3F72;
  font-size: 13.5px;
  font-weight: 600;
  text-decoration: none;
}
#contact .map-button:hover{
  background: #3F355F;
  border-color: #3F355F;
}

/* =========================================================
   Common headings / text (minimal)
   ========================================================= */
h2{
  font-size: 20px;
  line-height: 1.2;
  color: #4B3F72;
  text-align: left;
  font-weight: 900;
}

/* =========================================================
   Mobile (consolidated)
   - Keeps the final, effective rules from the previous stacked fixes.
   ========================================================= */
@media only screen and (max-width: 480px){
  #bg-network{
    background-size: 90vw;
    opacity: 0.06;
    -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0) 0px, rgba(0,0,0,1) 36px);
    mask-image: linear-gradient(to bottom, rgba(0,0,0,0) 0px, rgba(0,0,0,1) 36px);
  }

  body{ min-width: auto; }

  #sb-site{
    width: 100% !important;
    background: #fff;
    border-top: solid 1px #00389f; /* existing mobile menu color */
  }

  .sp{ display: block !important; }
  .pc{ display: none !important; }

  header{ width: 100%; }

  footer{
    width: 100%;
    text-align: center;
  }
  footer p{
    display: block;
    margin: 15px 0 0;
    width: 100%;
    font-size: 12px;
  }

  #mainvisual{ width: 100%; }

  /* ===== Main content padding (final) ===== */
  main.top{
    width: 100% !important;
    margin: 0 auto;
    gap: 14px;
    padding-left: 24px !important;
    padding-right: 24px !important;
    box-sizing: border-box;
  }

  #news{
    margin: 0;
    padding: 14px 14px 8px;
    min-height: 380px;
  }
  #news #newsList{ height: 200px; }

  #contact{
    width: 98%;
    text-align: left;
    margin: 40px auto 0;
  }
  #contact h2,
  #contact .contact-line,
  #contact .contact-actions{
    text-align: left;
  }

  /* =========================================================
     Mobile: Slidebars menu (clean)
     ========================================================= */

  /* Remove desktop top/bottom purple bands + bottom bar on mobile */
  body{
    border-top: none !important;
    border-bottom: none !important;
  }
  #bottom-bar{ display: none !important; }

  /* Hide desktop header strip (logo/lang icon) on mobile */
  header#header{ display: none !important; }

  /* Hide desktop nav on mobile; use slidebar */
  nav{ display: none !important; }

  /* Show slidebars toggle + sidebar on mobile */
  #toggle, .sb-slidebar{ display: block !important; }

  /* Hero wrapper (toggle anchored to the image; does NOT follow scroll) */
  #hero-wrap{
    position: relative;
    width: 100%;
  }
  #hero-wrap #mainvisual{
    width: 100% !important;
    margin: 0 !important;
    display: block;
  }

  /* Toggle position (final: slightly further bottom-right) */
  #hero-wrap #toggle{
    position: absolute !important;
    right: 8px !important;
    bottom: 8px !important;
    top: auto !important;
    left: auto !important;
    z-index: 5 !important;
    background: transparent !important;
    box-shadow: none !important;
    padding: 0 !important;
  }

  /* ===== MENU button: stable stacking (no flex/gap dependency) ===== */
  #hero-wrap #toggle button.sb-toggle-left{
    width: 72px !important;
    height: 60px !important;
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
    border-radius: 0 !important;

    display: block !important;
    text-align: center !important;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
  }

  /* Hamburger (3 lines) */
  #hero-wrap #toggle .css-bar,
  #hero-wrap #toggle .css-bar::before,
  #hero-wrap #toggle .css-bar::after{
    width: 32px !important;
    height: 3px !important;
    background: #FFFFFF !important;
    border-radius: 2px;
  }
  #hero-wrap #toggle .css-bar{
    position: relative;
    display: block !important;
    margin: 0 auto !important;
    margin-bottom: 10px !important; /* explicit spacing between bars and MENU text */
  }
  #hero-wrap #toggle .css-bar::before{
    content: "";
    position: absolute;
    top: -10px;
    left: 0;
  }
  #hero-wrap #toggle .css-bar::after{
    content: "";
    position: absolute;
    top: 10px;
    left: 0;
  }

  /* MENU label */
  #hero-wrap #toggle .menu-label{
    display: block !important;
    margin-top: 0 !important;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: #FFFFFF;
    line-height: 1.1 !important;
    white-space: nowrap;
  }

  /* Sidebar theme */
  .sb-slidebar{
    background: #3F355F !important;
  }

  /* Sidebar menu list */
  ul#sp_menu{
    list-style: none !important;
    padding: 0 !important;
    margin: calc(env(safe-area-inset-top, 0px) + 10px) 14px 14px !important;
  }
  ul#sp_menu li{
    list-style: none !important;
    background-image: none !important;
    margin: 0;
    padding: 8px 0 0;
    text-align: left;
  }
  ul#sp_menu li a{
    display: block;
    padding: 12px 8px;
    color: #FFFFFF !important;
    text-decoration: none !important;
    font-size: 15px;
    font-weight: 650;
    border-radius: 10px;
    background: rgba(255,255,255,0.06);
  }
  ul#sp_menu li a:hover{
    background: rgba(255,255,255,0.12);
    opacity: 1 !important;
  }
}
/* 本文は常に前面 */
#sb-site,
header,
nav,
main,
#contact,
footer{
  position: relative;
  z-index: 1;
}


#bottom-bar{
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  height: 31px;                 /* 上と同じ高さ */
  background: #3F355F;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  pointer-events: none;         /* 操作の邪魔をしない */
}

#copyright-text{
  color: #FFFFFF;
  font-size: 12.5px;
  letter-spacing: 0.02em;
  font-weight: 500;
  white-space: nowrap;
}

@media only screen and (max-width: 480px){
  #copyright-text{
    font-size: 11.5px;
  }
}


#contents_visual{
  width: 960px;
  max-width: 100%;
  height: 200px;
  margin: 0 auto;
  aspect-ratio: 2047 / 445;
  background: url("../image/topnarrow.jpg") center/cover no-repeat;
}


/* =========================================================
   INTRO PAGE ONLY
   Message text spacing (no <br> needed)
   Scope: body.intro
   ========================================================= */
body.intro #message .hero-lead{
  margin: 0 0 14px 0;
}

body.intro #message h2{
  margin: 22px 0 10px 0;
}

body.intro #message h2 + p{
  margin-top: 0;
}

body.intro #message .manifesto{
  margin: 16px 0 18px 0;
}


/* =========================================================
   INTRO page: readability tuning (Japanese long text)
   ========================================================= */

/* 本文全体：行間を広げる */
body.intro #message p{
  line-height: 1.85;
  margin: 0 0 1.2em 0;
}

/* 連続する段落は少し詰める（読みの流れを保つ） */
body.intro #message p + p{
  margin-top: 0.6em;
}

/* 見出し：上下にしっかり呼吸を入れる */
body.intro #message h2{
  margin: 2.4em 0 0.8em 0;
  line-height: 1.3;
}

/* 見出し直後の段落は詰める */
body.intro #message h2 + p{
  margin-top: 0.2em;
}


/* 研究テーマ：論点ブロック */
body.intro .topic-card{
  margin: 1.8em 0;
  padding: 1em 1.2em;
  border-left: 3px solid rgba(75,63,114,0.45);
  background: rgba(255,255,255,0.4);
}

/* 見出し */
body.intro .topic-card h3{
  margin: 0 0 0.4em 0;
  font-size: 1.2em;
  font-weight: 700;
  color: #3E3A66;
}

/* 説明文 */
body.intro .topic-card p{
  margin: 0;
  line-height: 1.75;
}

body.intro #contact{
  padding-bottom: 12px; /* 31px bottom-bar + 見た目余白 */
}

/* =========================================================
   News year dropdown (All -> panel)
   ========================================================= */
   #news .news-year{
    position: relative; /* anchor for dropdown panel */
  }
  
  /* pinned row */
  #news .news-year .year-pinned{
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: flex-end;
    align-items: center;
  }
  
  /* dropdown panel */
  #news .news-year .year-panel{
    position: absolute;
    right: 0;
    top: calc(100% + 8px);
    background: #FFFFFF;
    border: 1px solid #D8DAE0;
    border-radius: 12px;
    box-shadow: 0 12px 28px rgba(0,0,0,0.12);
    padding: 10px;
    display: grid;
    gap: 8px;
    min-width: 120px;
    z-index: 60;
  
    /* scroll */
    max-height: 220px;
    overflow: auto;
  }
  
  /* make dropdown buttons full width */
  #news .news-year .year-panel .year-btn{
    width: 100%;
    text-align: center;
  }
  
  /* empty state */
  #news .news-year .year-empty{
    font-size: 13px;
    color: #666;
    padding: 6px 4px;
  }
  
  /* ===== Member card ===== */
.member-card {
  padding: 24px;
}

.member-inner {
  display: flex;
  gap: 24px;
  align-items: center;
}

.member-photo img {
  width: 140px;
  height: auto;
  border-radius: 8px;
  object-fit: cover;
}

.member-text {
  flex: 1;
}

.member-name {
  margin-bottom: 6px;
}

.member-affil {
  font-size: 0.9em;
  opacity: 0.8;
  margin-bottom: 10px;
}

.member-bio {
  line-height: 1.7;
}

/* ===== Mobile ===== */
@media screen and (max-width: 768px) {
  .member-inner {
    flex-direction: column;
    text-align: center;
  }

  .member-photo img {
    width: 120px;
  }
}
/* ===== Photo hover swap ===== */
.hover-swap {
  position: relative;
  width: 140px;
}

.hover-swap img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  display: block;
}

.photo-hover {
  position: absolute;
  top: 0;
  left: 0;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.hover-swap:hover .photo-hover {
  opacity: 1;
}

.hover-swap:hover .photo-main {
  opacity: 0;
}

/* Mobile: disable hover swap */
@media screen and (max-width: 768px) {
  .photo-hover {
    display: none;
  }
}


/* =========================================================
   Member card FINAL compact override
   （縦間隔を詰める＋連絡先を1行に）
   ========================================================= */

/* テキスト全体を引き締める */
.member-name {
  margin: 0 0 1px 0 !important;
}

.member-name-en {
  margin: 0 0 2px 0 !important;
  font-size: 1em;
  opacity: 0.7;
}

.member-title {
  margin: 0 0 4px 0 !important;
  font-size: 1em;
}

.member-bio {
  margin: 0 0 6px 0 !important;
  line-height: 1.45 !important;
}

/* メール＋リンクを同一行に */
.member-contact {
  display: flex !important;
  align-items: center !important;
  gap: 10px !important;
  margin: 2px 0 0 0 !important;
}

.member-email {
  margin: 0 !important;
  font-size: 0.9em;
  opacity: 0.9;
  white-space: nowrap;
}

/* アイコン列をさらにコンパクトに */
.member-links {
  display: flex !important;
  align-items: center !important;
  gap: 8px !important;
  margin: 0 !important;
}

.member-links a {
  width: 24px !important;
  height: 24px !important;
  font-size: 1em !important;
}

/* 写真基準の余白を消す */
.member-inner {
  align-items: center!important;
}

/* =========================================================
   Member card: 1% side margin
   ========================================================= */

.member-card {
  margin-left: 5% !important;
  margin-right: 5% !important;
}

/* ===== Publications: year grouping + scroll (add only) ===== */

.topic-card .pub-scroll{
  /* ボックスが長い問題：内部スクロールにする */
  max-height: 50vh;           /* ここを好みで 55vh〜70vh くらいで調整 */
  overflow: auto;
  padding-right: 0.5rem;      /* スクロールバーで文字が隠れないように */
}

.topic-card .pub-year{
  margin-top: 1.1rem;
}

.topic-card .pub-year:first-child{
  margin-top: 0.2rem;
}

.topic-card .pub-year-title{
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  margin: 0 0 0.4rem;
  padding: 0.2rem 0;
  position: relative;
  opacity: 0.95;
}

/* 基本の細い下線 */
.topic-card .pub-year-title::after{
  content: "";
  display: block;
  height: 2px;
  width: 100%;
  margin-top: 0.35rem;
  background: rgba(90, 80, 120, 0.22); /* 今の紫系に馴染む薄色 */
  border-radius: 999px;
}


/* スクロール時も読みやすいように li 間隔を少しだけ */
.topic-card .pub-year li{
  margin-bottom: 0.55rem;
}


.hero-copy .hero-sub {
  display: block;
  font-size: 0.72em;
  letter-spacing: 0.02em;
  opacity: 0.85;
  color: #3F355F;
}


/* TOP(index) でも introduction と同じ見出しの行間にする */
body.top #message .hero-copy{
  line-height: 1.85;
  margin: 0 0 1.2em 0;
}