:root{
  --paper:#FAFAF0; --ink:#111; --red:#C8372D; --mute:#555; --line:#111; --pale:#E6E6DC;
  --sans:"Helvetica Neue",Helvetica,Arial,"Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:14px;line-height:1.7;letter-spacing:.03em;overflow-x:hidden}
a{color:inherit;text-decoration:none}

/* header */
.hd{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:22px 22px 18px;border-bottom:1px solid var(--line)}
.hd nav{display:flex;gap:22px;font-size:13px}
.hd nav a:hover{text-decoration:underline}
.logo{font-weight:900;font-size:34px;letter-spacing:-.02em;line-height:1;text-align:center}
.logo small{display:block;font-size:12px;font-weight:400;letter-spacing:.2em;margin:8px 0 0}
.hd .right{justify-self:end;display:flex;gap:18px;font-size:13px}
.bk{border-left:1px solid var(--ink);border-bottom:1px solid var(--ink);padding:0 6px 1px}
.crumb{border-bottom:1px solid var(--line);padding:12px 22px;font-size:12.5px;color:var(--mute)}
.crumb a:hover{text-decoration:underline}

/* label */
.lab{display:inline-flex;align-items:center;gap:10px;font-size:12px;letter-spacing:.12em}
.lab .box{border-left:1px solid var(--ink);border-bottom:1px solid var(--ink);padding:0 8px 1px}

/* first view */
.fv{display:grid;grid-template-columns:1fr 1fr;border-bottom:1px solid var(--line)}
.fv .word{padding:48px 44px;border-right:1px solid var(--line);display:flex;flex-direction:column;justify-content:space-between;min-height:440px}
.fv h1{font-size:34px;line-height:1.55;font-weight:700;letter-spacing:.02em;margin:26px 0}
.fv .meta{font-size:12.5px;color:var(--mute)}
.fv .date{background:var(--ink);color:var(--paper);padding:44px;display:flex;flex-direction:column;justify-content:space-between}
.fv .big{font-weight:900;font-size:180px;line-height:.85;letter-spacing:-.05em;display:flex;align-items:flex-end;gap:28px;margin-bottom:40px}
.fv .big span{font-size:22px;font-weight:400;letter-spacing:.2em;line-height:1.2;padding-bottom:4px;white-space:nowrap}
.fv ol{list-style:none;border-top:1px solid #444;counter-reset:n}
.fv ol li{counter-increment:n;display:grid;grid-template-columns:36px 1fr;padding:9px 0;border-bottom:1px solid #444;font-size:13.5px}
.fv ol li::before{content:counter(n,decimal-leading-zero);color:#999;font-size:12px;padding-top:2px}
.fv ol a:hover{text-decoration:underline}

/* ticker */
.tick{overflow:hidden;border-bottom:1px solid var(--line);white-space:nowrap;padding:12px 0;font-size:13px}
.tick div{display:inline-block;animation:mv 40s linear infinite}
.tick span{padding-right:48px}
.tick span::after{content:"⟶";padding-left:48px;letter-spacing:0}
@keyframes mv{to{transform:translateX(-50%)}}
@media (prefers-reduced-motion:reduce){.tick div{animation:none}}

/* horizontal cards */
.row{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(300px,25%);overflow-x:auto;border-bottom:1px solid var(--line);scrollbar-width:none}
.row::-webkit-scrollbar{display:none}
.card{border-right:1px solid var(--line);display:flex;flex-direction:column}
.card .top{padding:18px 20px 22px;flex:1}
.tag{display:inline-block;border:1px solid var(--ink);font-size:12px;padding:0 7px;line-height:20px;margin-bottom:14px}
.card h3{font-size:17px;line-height:1.55;font-weight:700;margin-bottom:10px}
.card p{font-size:13.5px;color:#333;display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}
.card .bot{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding:12px 20px;font-size:13px}
.card:hover h3{text-decoration:underline}

.sec{text-align:center;padding:22px 0;border-bottom:1px solid var(--line);font-size:15px;letter-spacing:.14em}

/* issue list */
.list a{display:grid;grid-template-columns:140px 70px 1fr 170px 90px;align-items:center;border-bottom:1px solid var(--line);font-size:13.5px}
.list a > *{padding:16px 22px}
.list .d{font-variant-numeric:tabular-nums}
.list .t{background:var(--red);color:#fff;font-size:12px;padding:1px 10px;justify-self:start}
.list .c{overflow:hidden;white-space:nowrap;text-overflow:ellipsis;border-right:1px solid var(--line)}
.list .n{border-right:1px solid var(--line);color:var(--mute)}
.list a:hover .c{text-decoration:underline}
.more{display:flex;justify-content:center;padding:44px 0 56px}
.more a{position:relative;border-left:1px solid var(--ink);border-right:1px solid var(--ink);border-bottom:1px solid var(--ink);padding:10px 42px;font-size:13px}
.more a::after{content:"";position:absolute;left:50%;bottom:-17px;width:1px;height:16px;background:var(--ink)}
.more a::before{content:"";position:absolute;left:calc(50% - 3.5px);bottom:-21px;width:7px;height:7px;border-radius:50%;background:var(--ink)}

/* grid of articles */
.grid{display:grid;grid-template-columns:repeat(3,1fr);border-bottom:1px solid var(--line)}
.grid > *{border-right:1px solid var(--line);border-bottom:1px solid var(--line);min-height:330px}
.grid > *:nth-child(3n){border-right:0}
.art{padding:22px 24px;display:flex;flex-direction:column}
.art .lab{margin-bottom:18px}
.art h3{font-size:20px;line-height:1.6;font-weight:500;margin-bottom:16px}
.art .impact{font-size:13.5px;color:#333;margin-bottom:14px}
.art .impact b{font-weight:700}
.art .src{font-size:12.5px;color:var(--mute)}
.art .read{margin-top:auto;align-self:flex-end;font-size:12.5px;border-right:1px solid var(--ink);border-bottom:1px solid var(--ink);padding:0 6px 1px 0}
.art:hover h3{text-decoration:underline}
.type{background:var(--ink);color:var(--paper);display:flex;align-items:center;justify-content:center;padding:24px;overflow:hidden}
.type b{font-size:64px;font-weight:900;line-height:1.05;letter-spacing:-.03em;text-align:center}
.type.pale{background:var(--pale);color:var(--ink)}

/* notes */
.notes{border-bottom:1px solid var(--line);padding:32px 22px 36px}
.notes ul{list-style:none;max-width:780px;margin:0 auto}
.notes li{font-size:14px;line-height:1.9;padding:12px 0;border-bottom:1px solid #ccc}
.notes li a{font-size:12.5px;color:var(--mute);margin-left:8px;text-decoration:underline}

/* article */
.ahead{display:grid;grid-template-columns:260px 1fr;border-bottom:1px solid var(--line)}
.ahead .num{border-right:1px solid var(--line);padding:36px 28px;display:flex;flex-direction:column;justify-content:space-between;gap:24px}
.ahead .num b{font-size:120px;font-weight:900;line-height:.85;letter-spacing:-.05em}
.ahead .num span{font-size:12.5px;color:var(--mute);letter-spacing:.1em}
.ahead .ttl{padding:40px 44px 44px}
.ahead h1{font-size:40px;line-height:1.45;font-weight:700;letter-spacing:.01em;margin-top:24px;max-width:860px}
.body{display:grid;grid-template-columns:260px 1fr;border-bottom:1px solid var(--line)}
.side{border-right:1px solid var(--line);padding:32px 28px;font-size:12.5px}
.side dl{position:sticky;top:24px}
.side dt{color:var(--mute);letter-spacing:.1em;margin-top:18px}
.side dt:first-child{margin-top:0}
.side dd{font-size:13.5px;margin-top:2px}
.main{padding:40px 44px 56px;max-width:780px}
.main h2{font-size:13px;font-weight:400;letter-spacing:.16em;display:flex;align-items:center;gap:12px;margin-bottom:16px}
.main h2::before{content:"";width:18px;height:1px;background:var(--ink)}
.main p{font-size:16.5px;line-height:2;letter-spacing:.04em}
.main .blk{margin-bottom:48px}
.impactbox{background:var(--ink);color:var(--paper);padding:30px 32px}
.impactbox h2::before{background:var(--paper)}
.impactbox p{font-size:18px;line-height:1.9}
.srcs a{display:grid;grid-template-columns:1fr auto;gap:16px;align-items:center;border-top:1px solid var(--line);padding:16px 0;font-size:14px}
.srcs a:last-of-type{border-bottom:1px solid var(--line)}
.srcs a .en{font-size:12px;color:var(--mute);border:1px solid var(--mute);padding:0 6px;line-height:19px;white-space:nowrap}
.srcs a:hover .t{text-decoration:underline}
.srcs .t small{display:block;font-size:12.5px;color:var(--mute);margin-top:2px}
.srcs .memo{font-size:12.5px;color:var(--mute);margin-top:12px}
.pager{display:grid;grid-template-columns:1fr 1fr;border-bottom:1px solid var(--line)}
.pager a,.pager span{padding:24px 22px;font-size:14px}
.pager > :last-child{border-left:1px solid var(--line);text-align:right}
.pager small{display:block;font-size:12px;color:var(--mute);letter-spacing:.12em;margin-bottom:4px}
.pager a:hover{text-decoration:underline}

/* about / footer */
.about{text-align:center;padding:84px 22px 40px}
.about .logo{font-size:96px;display:block;margin-bottom:40px}
.about p{font-size:14px;line-height:2.3;max-width:640px;margin:0 auto}
.ft{background:var(--ink);color:var(--paper);display:flex;justify-content:space-between;padding:28px 22px;font-size:12.5px;margin-top:80px}

@media (max-width:760px){
  .hd{grid-template-columns:1fr auto;padding:16px}
  .hd nav,.hd .right > span{display:none}
  .logo{font-size:26px}
  .hd .logo{text-align:left}
  .hd .right{font-size:12px}
  .crumb{padding:10px 16px;font-size:12px}
  .fv{grid-template-columns:1fr}
  .fv .word{border-right:0;border-bottom:1px solid var(--line);padding:32px 18px;min-height:0}
  .fv h1{font-size:23px}
  .fv .date{padding:28px 18px}
  .fv .big{font-size:96px;gap:16px;margin-bottom:26px}
  .fv .big span{font-size:16px;letter-spacing:.14em;padding-bottom:2px}
  .row{grid-auto-columns:82%}
  .list a{grid-template-columns:auto 1fr}
  .list a > *{padding:12px 16px}
  .list .d{padding-bottom:0}
  .list .t{grid-column:2;grid-row:1;justify-self:end;margin:12px 16px 0}
  .list .c{grid-column:1/-1;white-space:normal;border-right:0;padding-top:6px}
  .list .n,.list .go{display:none}
  .grid{grid-template-columns:1fr}
  .grid > *{border-right:0;min-height:0}
  .type{min-height:200px}
  .type b{font-size:48px}
  .notes{padding:24px 18px}
  .ahead,.body{grid-template-columns:1fr}
  .ahead .num{border-right:0;border-bottom:1px solid var(--line);padding:22px 18px;flex-direction:row;align-items:flex-end}
  .ahead .num b{font-size:64px}
  .ahead .ttl{padding:26px 18px 30px}
  .ahead h1{font-size:25px}
  .side{border-right:0;border-bottom:1px solid var(--line);padding:18px}
  .side dl{position:static;display:grid;grid-template-columns:auto 1fr;column-gap:18px;row-gap:6px}
  .side dt{margin-top:0}
  .main{padding:30px 18px 40px}
  .main p{font-size:15.5px;line-height:1.95}
  .impactbox{padding:24px 20px}
  .impactbox p{font-size:16px}
  .pager a,.pager span{padding:18px 16px;font-size:13px}
  .about{padding:60px 18px 30px}
  .about .logo{font-size:56px}
  .about p{font-size:13.5px;line-height:2.1;text-align:left}
  .about p br{display:none}
}

/* subscribe */
.sub{border-bottom:1px solid var(--line);padding:64px 22px 60px;display:grid;justify-items:center;text-align:center}
.sub h2{font-size:28px;font-weight:700;line-height:1.5;margin:22px 0 28px}
.sub form{width:100%;max-width:520px;text-align:left}
.sub label{display:block;font-size:12.5px;letter-spacing:.1em;margin-bottom:8px}
.sub .f{display:grid;grid-template-columns:1fr auto;border:1px solid var(--ink)}
.sub input[type=email]{border:0;background:#fff;padding:14px 16px;font:inherit;font-size:16px;min-width:0;border-radius:0}
.sub input[type=email]:focus{outline:2px solid var(--ink);outline-offset:-2px}
.sub button{border:0;background:var(--ink);color:var(--paper);font:inherit;font-size:14px;letter-spacing:.12em;padding:0 26px;cursor:pointer;border-radius:0}
.sub button:hover{background:#333}
.sub .fine{font-size:12.5px;color:var(--mute);max-width:520px;margin-top:14px;text-align:left;line-height:1.8}
@media (max-width:760px){
  .sub{padding:44px 18px}
  .sub h2{font-size:21px}
  .sub button{padding:0 16px}
}

/* security (toorimichi.jp/security/) */
.sec-site .hd .logo small{color:var(--red)}
.sev{display:inline-block;border:1px solid var(--ink);font-size:12px;padding:0 7px;line-height:20px;margin-left:6px;vertical-align:top}
.sev.crit{background:var(--ink);color:var(--paper)}
.card .sev{margin-bottom:14px}
.art .lab .sev{margin-left:4px;vertical-align:middle;line-height:18px}
.pkg{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12.5px;color:var(--mute);margin-bottom:10px;word-break:break-all}
.card .pkg{margin-top:-4px}
.fv ol .l{font-weight:700;margin-right:6px}
.fv ol li.none{display:block;font-weight:700}
.fv ol li.none::before{content:none}
.langs{display:grid;grid-template-columns:repeat(3,1fr);border-bottom:1px solid var(--line)}
.langs a{padding:16px 22px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:baseline;gap:12px;font-weight:700;font-size:15px}
.langs a:nth-child(3n){border-right:0}
.langs a:nth-last-child(-n+3){border-bottom:0}
.langs a small{font-weight:400;color:var(--mute);font-size:12px;white-space:nowrap}
.langs a b{color:var(--red)}
.langs a:hover{text-decoration:underline}
.side dd.mono{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12.5px;word-break:break-all}
.langhead{padding:44px 44px 40px;border-bottom:1px solid var(--line)}
.langhead h1{font-size:48px;font-weight:900;letter-spacing:-.02em;line-height:1.2;margin-top:18px}
.langhead h1 span{font-size:16px;font-weight:400;letter-spacing:.1em;margin-left:14px}
@media (max-width:760px){
  .langs{grid-template-columns:1fr}
  .langs a{border-right:0;padding:14px 16px}
  .langs a:nth-last-child(-n+3){border-bottom:1px solid var(--line)}
  .langs a:last-child{border-bottom:0}
  .langhead{padding:26px 18px}
  .langhead h1{font-size:30px}
}

/* security: 配色B 黒地×蛍光黄（2026-10-23 本人選択） */
.sec-site{--paper:#121212;--ink:#F1F1EA;--red:#D9FF3A;--mute:#9A9A90;--line:#F1F1EA;--pale:#1E1E1E;background:#121212;color:#F1F1EA}
.sec-site .hd .logo small{color:#D9FF3A}
.sec-site .fv .date{background:#D9FF3A;color:#121212}
.sec-site .fv ol{border-top-color:#121212}.sec-site .fv ol li{border-bottom-color:#121212}.sec-site .fv ol li::before{color:#444}
.sec-site .impactbox{background:#F1F1EA;color:#121212}.sec-site .impactbox h2::before{background:#121212}
.sec-site .ft{background:#D9FF3A;color:#121212}
.sec-site .sev.crit{background:#D9FF3A;color:#121212;border-color:#D9FF3A}
.sec-site .card p,.sec-site .art .impact,.sec-site .main p,.sec-site .about p{color:#C8C8BE}
.sec-site .main .impactbox p{color:#121212}
.sec-site .list .t{background:#D9FF3A;color:#121212}
.sec-site .sub button{background:#D9FF3A;color:#121212}.sec-site .sub button:hover{background:#C4E82E}
.sec-site .sub input[type=email]{background:#1E1E1E;color:#F1F1EA}.sec-site .sub input[type=email]:focus{outline-color:#D9FF3A}
.sec-site .notes li{border-bottom-color:#444}
.sec-site .srcs a .en{color:#9A9A90;border-color:#9A9A90}