/* 保険代理店AIノート — スポーツ誌風デザイン（2026-11-09）
   太い見出し・赤のアクセント・大きな写真・角のある色ブロック・大きな番号 */
:root{--bg:#fff;--ink:#141414;--sub:#3d3d3d;--mute:#7c7c7c;--line:#dedede;--gray:#f2f2f0;
--red:#d0101b;--red-d:#a50c15;--yellow:#ffd60a;--navy:#0d2a4f;--sky:#eaf1f8;--measure:40em}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Noto Sans JP","Hiragino Sans","Yu Gothic","YuGothic",sans-serif;
font-size:17px;line-height:2;letter-spacing:.03em;-webkit-font-smoothing:antialiased;overflow-wrap:anywhere}
a{color:inherit}
img{max-width:100%;height:auto;display:block}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}
rt{font-size:.5em;color:var(--mute);letter-spacing:0}

/* header */
.mast{background:#fff;position:sticky;top:env(safe-area-inset-top,0px);z-index:10;border-top:6px solid var(--red);border-bottom:3px solid var(--ink)}
.mast .wrap{display:flex;justify-content:space-between;align-items:center;gap:16px;padding-block:12px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none}
.logo i{display:none}
.logo>span{display:block;font-weight:900;font-size:24px;letter-spacing:.02em;line-height:1.2}
.logo::before{content:"AI NOTE";font-family:"Oswald",sans-serif;font-weight:700;font-size:15px;letter-spacing:.06em;color:#fff;background:var(--red);padding:6px 9px 5px;line-height:1;font-style:italic}
.logo small{display:block;font-size:11px;font-weight:500;color:var(--mute);letter-spacing:.06em;margin-top:3px}
.mast-nav{display:flex;gap:2px;flex-wrap:wrap;font-size:14.5px;font-weight:700}
.mast-nav a{text-decoration:none;color:var(--ink);padding:7px 14px}
.mast-nav a:hover{color:var(--red)}
.mast-nav a.em{background:var(--red);color:#fff}
.mast-nav a.em:hover{background:var(--red-d);color:#fff}

/* labels */
.kicker,.chip{display:inline-block;font-size:13px;font-weight:900;letter-spacing:.06em;color:#fff;background:var(--red);padding:2px 12px;line-height:1.8}
.byline{font-size:13px;color:var(--mute);letter-spacing:.03em}

/* top: main visual */
.intro{position:relative;margin:24px 0 0;color:#fff;overflow:hidden}
.intro>img{width:100%;aspect-ratio:16/7;object-fit:cover}
.intro::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,0,0,.74) 0%,rgba(0,0,0,.48) 45%,rgba(0,0,0,0) 78%);pointer-events:none}
.mv-card{position:absolute;left:48px;bottom:44px;max-width:620px;z-index:1}
.mv-card::before{content:"特集　AIのはじめ方";display:inline-block;font-size:14px;font-weight:900;background:var(--red);color:#fff;padding:3px 14px;margin-bottom:14px;letter-spacing:.08em}
.mv-card h1{font-size:clamp(30px,4.6vw,56px);line-height:1.3;margin:0 0 14px;font-weight:900;letter-spacing:.01em;text-shadow:0 2px 16px rgba(0,0,0,.35)}
.mv-card h1 em{font-style:normal;color:var(--yellow)}
.intro .mv-card p{margin:0;font-size:15.5px;line-height:1.9;font-weight:500;max-width:30em}
.intro .pills{display:flex;gap:6px;flex-wrap:wrap;margin-top:16px}
.intro .pills span{background:#fff;color:var(--ink);font-size:13px;font-weight:700;padding:2px 12px}
.mv-cr{position:absolute;right:12px;bottom:8px;z-index:1;font-size:10.5px;color:rgba(255,255,255,.85);line-height:1.4}
.mv-cr a{color:rgba(255,255,255,.85)}

/* top: lead */
.lead{display:grid;grid-template-columns:1.15fr 1fr;gap:40px;padding:36px 0;margin:0;align-items:center;text-decoration:none;border-bottom:3px solid var(--ink)}
.lead:hover .lead-ttl{color:var(--red)}
.lead-ttl{font-size:clamp(24px,3.2vw,36px);line-height:1.45;font-weight:900;margin:14px 0 14px;word-break:auto-phrase}
.dek{color:var(--sub);font-size:15.5px;line-height:2;margin:0 0 16px}
.ph{position:relative;display:block;overflow:hidden}
.ph img{width:100%;object-fit:cover;transition:transform .5s}
a:hover .ph img{transform:scale(1.04)}
.lead .ph img{aspect-ratio:4/3}
.ph .tag{position:absolute;left:0;bottom:0;background:var(--red);color:#fff;font-size:13px;font-weight:900;letter-spacing:.06em;padding:4px 14px}
.cover{aspect-ratio:4/3;background:var(--red);color:#fff;display:flex;flex-direction:column;justify-content:space-between;padding:22px 24px;text-decoration:none}
.cover .no{font-size:13px;font-weight:900}
.cover .big{font-weight:900;font-size:clamp(36px,6vw,64px);line-height:1.15}
.cover .foot{font-size:12px;opacity:.85}
.cover.ochre{background:var(--navy)}.cover.ink{background:var(--ink)}.cover.slate{background:#2c6e49}.cover.wine{background:#e06c00}
.lead a,.cover,.cover *{text-decoration:none}

.sec-h{display:flex;align-items:baseline;gap:14px;padding:44px 0 10px;margin:0 0 22px;font-size:26px;font-weight:900;border-bottom:3px solid var(--ink)}
.sec-h::before{content:"";width:8px;height:26px;background:var(--red);align-self:center}
.sec-h span{font-family:"Oswald",sans-serif;font-size:15px;color:var(--red);letter-spacing:.1em;font-weight:700}
.idx{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:32px 28px}
.idx li{border-bottom:1px solid var(--line);padding-bottom:20px}
.idx a{display:block;text-decoration:none;height:100%}
.idx .ph img{aspect-ratio:3/2}
.idx .cover{aspect-ratio:3/2}
.idx .bd{padding:14px 0 0}
.idx-ttl{font-size:20px;line-height:1.5;font-weight:900;margin:6px 0 8px;word-break:auto-phrase}
.idx p{margin:0;color:var(--sub);font-size:14px;line-height:1.9}
.idx a:hover .idx-ttl{color:var(--red)}

/* article head */
.art-head{max-width:900px;margin:0 auto;padding:44px 24px 0}
.art-head h1{font-size:clamp(27px,4.4vw,46px);line-height:1.38;font-weight:900;margin:14px 0 18px;letter-spacing:.01em;word-break:auto-phrase}
.art-head br{display:none}
.art-head .dek{max-width:42em;margin:0 0 18px;font-size:16px;font-weight:500;color:var(--sub);padding-left:16px;border-left:4px solid var(--red)}
.art-head .byline{display:flex;align-items:center;gap:8px 18px;flex-wrap:wrap;border-top:1px solid var(--ink);padding-top:10px}
.art-head .rd{display:inline-block;background:var(--yellow);color:var(--ink);padding:0 10px;font-weight:900}
figure{margin:0}
figcaption{font-size:12px;color:var(--mute);margin-top:8px;line-height:1.7}
figcaption a{color:var(--mute)}
.hero{max-width:1160px;margin:26px auto 0;padding:0 24px}
.hero img{width:100%;aspect-ratio:16/8;object-fit:cover}

/* article body */
.art{max-width:calc(var(--measure) + 48px);margin:0 auto;padding:34px 24px 16px;counter-reset:h2}
.art p{margin:0 0 1.5em}
.art h2{counter-increment:h2;display:flex;align-items:flex-start;gap:16px;font-size:clamp(22px,3vw,28px);line-height:1.45;font-weight:900;margin:3em 0 1em;padding:14px 0 12px;border-top:4px solid var(--ink);border-bottom:1px solid var(--ink);word-break:auto-phrase}
.art h2::before{content:counter(h2,decimal-leading-zero);flex:none;font-family:"Oswald",sans-serif;font-weight:700;font-size:2.1em;line-height:.95;color:var(--red);letter-spacing:0}
.art.plain h2{display:block}
.art.plain h2::before{display:none}
.art h3{font-size:20px;line-height:1.6;margin:2.2em 0 .7em;font-weight:900;display:flex;gap:10px;align-items:baseline}
.art h3::before{content:"";flex:none;width:12px;height:12px;background:var(--red);transform:translateY(-1px)}
.art ul,.art ol{padding-left:1.4em;margin:0 0 1.6em}
.art li{margin:.4em 0;line-height:1.9}
.art li::marker{color:var(--red);font-weight:700}
.art b{font-weight:700;background:linear-gradient(transparent 58%,var(--yellow) 58%)}
.art a{color:var(--red-d);text-underline-offset:4px}
.art figure.inl{margin:2.4em 0}
.art figure.inl img{width:100%;aspect-ratio:3/2;object-fit:cover}
.tbl{overflow-x:auto;margin:0 0 2em;border:2px solid var(--ink)}
.art table{border-collapse:collapse;width:100%;font-size:15px;line-height:1.8;min-width:520px}
.art th,.art td{border-bottom:1px solid var(--line);padding:12px 16px;vertical-align:top;text-align:left}
.art th{background:var(--ink);color:#fff;font-weight:700;font-size:14px;white-space:nowrap;border-bottom-color:#444}
.art tr:last-child td,.art tr:last-child th{border-bottom:0}

/* ひとことで言うと */
.easy{margin:0 0 2.2em;background:var(--yellow);padding:0 0 18px}
.easy .av{display:none}
.easy .bub{padding:0 22px}
.easy .bt{display:inline-block;background:var(--ink);color:#fff;font-weight:900;font-size:14px;padding:4px 14px;margin:0 0 10px -22px;letter-spacing:.06em}
.easy p{margin:0;font-size:16.5px;line-height:1.95;font-weight:500}
.art .easy b{background:none;border-bottom:3px solid var(--red)}

/* toc */
.toc{margin:0 0 2.4em;padding:16px 22px;border:2px solid var(--ink)}
.art .toc b{background:none;font-weight:900;font-size:15px;display:block;margin-bottom:4px}
.art .toc b::after{content:"CONTENTS";font-family:"Oswald",sans-serif;color:var(--red);margin-left:10px;font-size:13px;letter-spacing:.1em}
.toc ol{margin:0;padding:0;list-style:none;counter-reset:t;font-size:15px}
.toc li{counter-increment:t;margin:.3em 0;display:flex;gap:12px;align-items:baseline}
.toc li::before{content:counter(t,decimal-leading-zero);flex:none;font-family:"Oswald",sans-serif;font-weight:700;color:var(--red);font-size:16px}
.toc a{color:var(--ink);text-decoration:none;font-weight:500}
.toc a:hover{color:var(--red);text-decoration:underline}

/* boxes */
.box{margin:0 0 2em;padding:0 22px 6px;border:2px solid var(--ink)}
.box .bt{display:block;font-weight:900;font-size:16px;margin:0 -22px 14px;padding:6px 22px;background:var(--ink);color:#fff;letter-spacing:.04em}
.box ul,.box ol{margin-bottom:1em}
.box.sum{border-color:var(--red)}
.box.sum .bt{background:var(--red)}
.box.sum ul{list-style:none;padding-left:0}
.box.sum li{position:relative;padding-left:32px;font-weight:500}
.box.sum li::before{content:"";position:absolute;left:0;top:.42em;width:21px;height:21px;background:var(--red) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M5 10.5l3.2 3.2L15 6.5' fill='none' stroke='white' stroke-width='2.6' stroke-linecap='square'/%3E%3C/svg%3E") center/100% no-repeat}
.box.warn{border-color:var(--red);background:#fff4f3}
.box.warn .bt{background:var(--red)}
.box.note{border-color:var(--ink);background:#fffbe6}
.box:not(:has(.bt)){padding-top:16px}
.case{margin:0 0 2em;padding:18px 22px;background:var(--gray);border-left:8px solid var(--red)}
.case .bt{display:inline-block;font-size:13px;font-weight:900;color:var(--red);margin-bottom:6px;letter-spacing:.06em}
.case p{margin:0;font-size:16px;line-height:2;font-weight:500}

/* ことばの解説 */
.term{margin:0 0 2em;padding:0 20px 12px;background:var(--sky);border-top:4px solid var(--navy)}
.term .tl{display:inline-flex;align-items:center;gap:8px;font-weight:900;font-size:13.5px;color:#fff;background:var(--navy);padding:3px 12px;letter-spacing:.06em}
.term .tl::before{content:"?";width:18px;height:18px;border-radius:50%;background:#fff;color:var(--navy);font-size:12px;font-weight:900;display:inline-grid;place-items:center;line-height:1}
.term dl{margin:4px 0 0}
.term dt{font-weight:900;font-size:15.5px;margin-top:.6em;color:var(--navy)}
.term dd{margin:0;font-size:14.5px;line-height:1.85;color:var(--sub)}

.src{font-size:13px;color:var(--mute);margin-top:3.4em;padding:16px 0 0;line-height:1.9;border-top:2px solid var(--ink)}
.art .src b{color:var(--ink);background:none;font-weight:900}
.src ul{padding-left:1.2em}
.src a{color:var(--mute);word-break:break-all}
.disc{font-size:12.5px;color:var(--mute);margin-top:18px;line-height:1.9}

/* information (CTA) */
.info{max-width:calc(var(--measure) + 48px);margin:24px auto 48px;padding:0 24px}
.info .in{padding:30px 32px;background:var(--red);color:#fff}
.info .lbl{display:inline-block;font-size:13px;font-weight:900;letter-spacing:.06em;color:var(--ink);background:var(--yellow);padding:2px 12px;margin-bottom:12px}
.info h3{font-size:24px;line-height:1.5;margin:0 0 10px;font-weight:900;word-break:auto-phrase}
.info p{margin:0 0 16px;color:#fff;font-size:15px;line-height:1.95}
.info .meta{display:flex;gap:6px;flex-wrap:wrap;font-size:13px;margin-bottom:20px}
.info .meta span{border:1.5px solid #fff;padding:1px 12px;font-weight:700}
.btn{display:inline-block;background:#fff;color:var(--red);text-decoration:none;padding:13px 30px;font-size:16px;font-weight:900;letter-spacing:.04em}
.btn:hover{background:var(--yellow);color:var(--ink)}
.btn::after{content:"→";margin-left:10px}

/* author */
.author{max-width:calc(var(--measure) + 48px);margin:0 auto 56px;padding:0 24px}
.author .in{display:flex;gap:18px;align-items:flex-start;border-top:4px solid var(--ink);padding-top:18px}
.author img{width:84px;height:84px;object-fit:cover;flex:none}
.author .nm{font-size:19px;font-weight:900}
.author .rl{font-size:12.5px;color:var(--mute);margin-bottom:6px}
.author p{margin:0;font-size:14px;color:var(--sub);line-height:1.9}

/* static pages */
.page-head{max-width:900px;margin:0 auto;padding:44px 24px 0}
.page-head br{display:none}
.page-head h1{font-size:clamp(26px,3.8vw,40px);line-height:1.4;margin:12px 0 6px;font-weight:900;word-break:auto-phrase}
.profile{display:grid;grid-template-columns:200px 1fr;gap:28px;margin:0 0 2em;align-items:start}
.profile img{width:200px;aspect-ratio:4/5;object-fit:cover}
.profile .nm{font-size:24px;font-weight:900}
.profile .kicker{margin-bottom:6px}

/* footer */
.ft{background:var(--ink);color:#cfcfcf;font-size:13px;border-top:6px solid var(--red)}
.ft .wrap{padding:36px 24px calc(36px + env(safe-area-inset-bottom,0px));display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:flex-end}
.ft .lg{font-weight:900;font-size:20px;color:#fff;margin-bottom:4px}
.ft a{color:#cfcfcf;text-decoration:none;margin-left:18px}
.ft a:first-child{margin-left:0}

/* form */
form .row{margin-bottom:18px}
form label{display:block;font-weight:700;font-size:14.5px;margin-bottom:6px}
form label .req{color:#fff;background:var(--red);font-size:11px;margin-left:8px;padding:0 8px;font-weight:700}
form input[type=text],form input[type=email],form input[type=tel],form select,form textarea{width:100%;padding:12px 14px;border:2px solid #cfcfcf;border-radius:0;font-size:16px;font-family:inherit;background:#fff}
form input:focus,form select:focus,form textarea:focus{outline:none;border-color:var(--ink)}
form textarea{min-height:130px}
form .chk{font-weight:400;display:flex;gap:10px;align-items:flex-start;margin:.2em 0}
form .chk input{margin-top:.55em;accent-color:var(--red)}
form button{background:var(--red);color:#fff;border:0;font-size:17px;font-weight:900;padding:15px 44px;cursor:pointer;font-family:inherit;letter-spacing:.06em}
form button:hover{background:var(--red-d)}
#fmsg{margin-top:14px;font-weight:700}

@media(max-width:760px){
body{font-size:16.5px}
.wrap{padding:0 16px}
.mast{border-top-width:4px}
.mast .wrap{padding-block:8px;gap:4px}
.logo{gap:8px}.logo>span{font-size:19px}.logo::before{font-size:12px;padding:5px 7px 4px}.logo small{display:none}
.mast-nav{width:100%;flex-wrap:nowrap;justify-content:space-between;font-size:12.5px;gap:0}
.mast-nav a{white-space:nowrap;padding:4px 9px}
.intro{margin:0 -16px;display:flex;flex-direction:column;background:var(--ink)}
.intro>img{aspect-ratio:4/3}
.intro::after{inset:0 0 auto 0;aspect-ratio:4/3;background:linear-gradient(0deg,rgba(20,20,20,1) 0%,rgba(20,20,20,0) 50%)}
.mv-card{position:relative;left:auto;bottom:auto;margin:-80px 0 0;padding:0 18px 26px}
.mv-card h1{font-size:30px}
.mv-cr{right:8px;bottom:auto;top:8px}
.lead{grid-template-columns:1fr;gap:16px;padding:24px 0 28px}
.idx{grid-template-columns:1fr;gap:24px}
.hero{padding:0}.hero img{aspect-ratio:4/3}.hero figcaption{padding:0 16px}
.art-head,.page-head{padding:28px 16px 0}
.art,.info,.author{padding-left:16px;padding-right:16px}
.art h2{gap:12px}
.profile{grid-template-columns:1fr}
.info .in{padding:24px 20px}
.ft a{margin:0 14px 0 0}
.art table{min-width:0;font-size:14px}.art th{white-space:normal;font-size:13px}.art th,.art td{padding:10px}
.art td:first-child{white-space:nowrap}
}
.mv-cr{text-shadow:0 1px 3px rgba(0,0,0,.85)}