/* ダイエットサーチ ― style.css */
:root{
  --brand:#0e8a7d; --brand-ink:#0a6259; --brand-soft:#e6f4f1; --brand-line:#bfe2db;
  --bg:#f5f8f7; --surface:#fff; --ink:#1d2b2a; --muted:#5a6b69; --line:#dfe7e5;
  --under:#3a7fc1; --normal:#1e9468; --over:#d4891b; --obese:#cf5246;
  --under-soft:#e8f1fa; --normal-soft:#e5f5ee; --over-soft:#fcf2e2; --obese-soft:#fbe9e7;
  --radius:14px; --shadow:0 1px 2px rgba(20,50,45,.05),0 4px 16px rgba(20,50,45,.06);
  --font:"Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans JP","Yu Gothic UI","Yu Gothic",Meiryo,system-ui,sans-serif;
  --num:"SF Pro Display","Segoe UI",Roboto,"Helvetica Neue",Arial,var(--font);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:16px;line-height:1.85;letter-spacing:.02em;overflow-wrap:anywhere}
img,svg{max-width:100%}
a{color:var(--brand-ink);text-underline-offset:3px}
a:hover{color:var(--brand)}
h1,h2,h3{line-height:1.45;letter-spacing:.03em}
[hidden]{display:none!important}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.skip{position:absolute;left:-999px;top:0;background:var(--brand);color:#fff;padding:8px 14px;z-index:99}
.skip:focus{left:8px}
:focus-visible{outline:3px solid #7fcfc3;outline-offset:2px;border-radius:4px}
.wrap{width:100%;max-width:1080px;margin:0 auto;padding:0 16px}

/* header */
.site-header{background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.header-inner{display:flex;align-items:center;gap:16px;min-height:60px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:700;font-size:1.12rem;letter-spacing:.06em;margin-right:auto}
.logo-mark{width:32px;height:32px;color:var(--brand);flex:none}
.gnav ul{list-style:none;margin:0;padding:0;display:flex;gap:2px}
.gnav a{display:block;padding:8px 12px;border-radius:8px;text-decoration:none;color:var(--muted);font-size:.93rem;font-weight:600;white-space:nowrap}
.gnav a:hover{background:var(--brand-soft);color:var(--brand-ink)}
.gnav a[aria-current]{color:var(--brand-ink);background:var(--brand-soft)}
.nav-toggle{display:none}
@media (max-width:860px){
  .nav-toggle{display:flex;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;border:0;background:none;border-radius:8px;cursor:pointer;padding:0 11px}
  .nav-toggle>span:not(.sr){display:block;height:2px;background:var(--ink);border-radius:2px;transition:.2s}
  .nav-toggle[aria-expanded="true"]>span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle[aria-expanded="true"]>span:nth-child(2){opacity:0}
  .nav-toggle[aria-expanded="true"]>span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .gnav{display:none;position:absolute;left:0;right:0;top:100%;background:var(--surface);border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
  .gnav.open{display:block}
  .gnav ul{flex-direction:column;padding:8px 16px 14px}
  .gnav a{padding:12px}
}

/* breadcrumb */
.breadcrumb ol{list-style:none;margin:14px auto 0;padding:0 0;display:flex;flex-wrap:wrap;font-size:.8rem;color:var(--muted);max-width:820px}
.breadcrumb li+li::before{content:"\203A";margin:0 .5em;color:#9aa9a7}
.breadcrumb a{color:var(--muted)}

/* main */
.main{max-width:852px;padding-top:8px;padding-bottom:48px}
.page-head{padding:22px 0 8px}
.page-head h1{font-size:clamp(1.45rem,4.4vw,2rem);margin:0 0 8px}
.page-head .lead{margin:0;color:var(--muted);font-size:.98rem}
.eyebrow{display:inline-block;font-size:.76rem;font-weight:700;letter-spacing:.12em;color:var(--brand-ink);background:var(--brand-soft);border-radius:99px;padding:2px 12px;margin-bottom:10px}

/* cards */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px;margin:20px 0}
@media (max-width:560px){.card{padding:18px 16px}}

/* form */
.calc h2{font-size:1.1rem;margin:0 0 16px;display:flex;align-items:center;gap:8px}
.calc h2::before{content:"";width:6px;height:20px;border-radius:3px;background:var(--brand)}
.fields{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px 16px}
.field{display:flex;flex-direction:column;gap:6px;min-width:0}
.field>label,.field>.label{font-size:.86rem;font-weight:700;color:var(--muted)}
.field .opt{font-weight:400;font-size:.78rem;margin-left:4px}
.input{position:relative;display:flex;align-items:center}
.input input,.input select{width:100%;height:50px;border:1.5px solid var(--line);border-radius:10px;padding:0 3.2em 0 14px;font:600 1.15rem var(--num);color:var(--ink);background:#fbfdfc;appearance:none;-moz-appearance:textfield}
.input select{font-size:1rem;font-family:var(--font);padding-right:2.4em;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);background-position:calc(100% - 20px) 22px,calc(100% - 15px) 22px;background-size:5px 5px;background-repeat:no-repeat}
.input input::-webkit-outer-spin-button,.input input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.input input:focus,.input select:focus{border-color:var(--brand);background:#fff;outline:none;box-shadow:0 0 0 3px rgba(14,138,125,.15)}
.input .unit{position:absolute;right:14px;color:var(--muted);font-size:.9rem;pointer-events:none}
.input input[aria-invalid="true"]{border-color:var(--obese)}
.seg{display:flex;border:1.5px solid var(--line);border-radius:10px;overflow:hidden;height:50px;background:#fbfdfc}
.seg label{flex:1;position:relative;display:flex}
.seg input{position:absolute;opacity:0}
.seg span{flex:1;display:flex;align-items:center;justify-content:center;font-weight:700;color:var(--muted);cursor:pointer;font-size:.95rem;padding:0 6px;text-align:center;line-height:1.3}
.seg label+label span{border-left:1.5px solid var(--line)}
.seg input:checked+span{background:var(--brand);color:#fff}
.seg input:focus-visible+span{outline:3px solid #7fcfc3;outline-offset:-3px}
.actions{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap}
.btn{appearance:none;border:0;border-radius:10px;height:50px;padding:0 28px;font:700 1rem var(--font);cursor:pointer;letter-spacing:.06em}
.btn-primary{background:var(--brand);color:#fff;flex:1;min-width:180px}
.btn-primary:hover{background:var(--brand-ink)}
.btn-ghost{background:transparent;color:var(--muted);border:1.5px solid var(--line)}
.btn-ghost:hover{border-color:var(--muted)}
.form-msg{color:var(--obese);font-size:.88rem;margin:10px 0 0;min-height:0}
.help{font-size:.8rem;color:var(--muted);margin:6px 0 0}

/* result */
.result{display:none;margin-top:22px;border-top:1px dashed var(--line);padding-top:22px}
.result.show{display:block;animation:rise .35s ease}
@keyframes rise{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.hero-num{display:flex;align-items:flex-end;flex-wrap:wrap;gap:6px 16px}
.hero-num .k{width:100%;font-size:.86rem;font-weight:700;color:var(--muted)}
.hero-num .v{font:700 clamp(2.6rem,10vw,3.6rem)/1 var(--num);letter-spacing:0;color:var(--ink)}
.hero-num .u{font-size:1rem;color:var(--muted);margin-left:-8px;padding-bottom:6px}
.badge{display:inline-flex;align-items:center;font-weight:700;font-size:.95rem;border-radius:99px;padding:5px 16px;margin-bottom:6px}
.lv-under{background:var(--under-soft);color:#245c93}
.lv-normal{background:var(--normal-soft);color:#146b4b}
.lv-over{background:var(--over-soft);color:#8e5a0c}
.lv-obese{background:var(--obese-soft);color:#a13a30}
.gauge{margin:22px 0 8px}
.gauge-bar{position:relative;display:flex;height:12px;border-radius:99px;overflow:visible}
.gauge-bar i{display:block;height:100%}
.gauge-bar i:first-child{border-radius:99px 0 0 99px}
.gauge-bar i:last-of-type{border-radius:0 99px 99px 0}
.gauge-marker{position:absolute;top:-7px;width:4px;height:26px;background:var(--ink);border-radius:2px;transform:translateX(-50%);transition:left .5s cubic-bezier(.2,.8,.2,1);box-shadow:0 0 0 2px #fff}
.gauge-labels{position:relative;height:1.6em;font:600 .74rem var(--num);color:var(--muted)}
.gauge-labels span{position:absolute;transform:translateX(-50%);top:4px}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:10px;margin:18px 0 0}
.stat{background:var(--bg);border-radius:10px;padding:12px 14px}
.stat .k{display:block;font-size:.8rem;color:var(--muted);font-weight:700}
.stat .v{font:700 1.4rem/1.35 var(--num)}
.stat .v small{font-size:.8rem;font-weight:600;color:var(--muted);margin-left:3px;font-family:var(--font)}
.stat .s{display:block;font-size:.78rem;color:var(--muted);line-height:1.5}
.comment{margin:16px 0 0;padding:14px 16px;border-radius:10px;background:var(--brand-soft);font-size:.94rem}
.comment.warn{background:var(--over-soft)}
.comment.alert{background:var(--obese-soft)}
.bars{margin:14px 0 0;display:grid;gap:12px}
.bar-row{display:grid;grid-template-columns:7.5em 1fr auto;gap:10px;align-items:center;font-size:.9rem}
.bar-row .track{height:10px;background:var(--bg);border-radius:99px;overflow:hidden}
.bar-row .fill{height:100%;background:var(--brand);border-radius:99px;transition:width .5s}
.bar-row b{font-family:var(--num);min-width:7em;text-align:right}

/* content */
.content h2{font-size:1.35rem;margin:44px 0 14px;padding:0 0 10px;border-bottom:2px solid var(--line);position:relative}
.content h2::after{content:"";position:absolute;left:0;bottom:-2px;width:64px;height:2px;background:var(--brand)}
.content h3{font-size:1.1rem;margin:28px 0 10px;padding-left:12px;border-left:4px solid var(--brand)}
.content p{margin:0 0 1.1em}
.content ul,.content ol{padding-left:1.4em;margin:0 0 1.2em}
.content li{margin:.25em 0}
.formula{background:var(--surface);border:1px solid var(--brand-line);border-radius:12px;padding:16px 18px;margin:16px 0;font-weight:700;text-align:center;font-size:1.05rem}
.formula small{display:block;font-weight:400;font-size:.82rem;color:var(--muted);margin-top:4px}
.table-wrap{overflow-x:auto;margin:14px 0 22px;border-radius:12px;border:1px solid var(--line);background:var(--surface);-webkit-overflow-scrolling:touch}
table.data{width:100%;border-collapse:collapse;font-size:.93rem;min-width:420px}
table.data th,table.data td{padding:10px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
table.data thead th{background:var(--brand-soft);color:var(--brand-ink);font-size:.84rem;white-space:nowrap}
table.data tbody tr:last-child>*{border-bottom:0}
table.data td.num,table.data th.num{text-align:right;font-family:var(--num);white-space:nowrap}
table.data tr.hl>*{background:#fffbea}
.dot{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:6px;vertical-align:0}
.note{font-size:.84rem;color:var(--muted);line-height:1.7}
.callout{background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--brand);border-radius:10px;padding:14px 18px;margin:18px 0}
.callout p:last-child{margin-bottom:0}
.callout.warn{border-left-color:var(--over)}
.toc{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px 20px;margin:20px 0}
.toc p{font-weight:700;margin:0 0 6px;font-size:.92rem}
.toc ol{margin:0;padding-left:1.3em;font-size:.93rem}
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:12px;margin:10px 0;padding:0 18px}
.faq summary{cursor:pointer;font-weight:700;padding:14px 0;list-style:none;position:relative;padding-right:24px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:0;top:12px;font-size:1.3rem;color:var(--brand);font-weight:400}
.faq details[open] summary::after{content:"－"}
.faq details>div{padding:0 0 14px}
.meta-line{font-size:.8rem;color:var(--muted)}
.sources{font-size:.84rem;color:var(--muted);border-top:1px solid var(--line);margin-top:36px;padding-top:14px}
.sources ul{padding-left:1.2em}

/* article list */
.post-list{list-style:none;padding:0;margin:20px 0;display:grid;gap:12px}
.post-list a{display:block;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px 20px;text-decoration:none;color:var(--ink);transition:border-color .15s,transform .15s}
.post-list a:hover{border-color:var(--brand-line);transform:translateY(-1px)}
.post-list strong{display:block;font-size:1.02rem;line-height:1.55;color:var(--brand-ink)}
.post-list span{display:block;font-size:.86rem;color:var(--muted);margin-top:4px;line-height:1.65}

/* ad slot (AdSense を置く場所) */
.ad-slot{margin:28px 0;min-height:0;text-align:center}
.ad-slot:empty{display:none}

/* tool strip / footer */
.tool-strip{background:var(--surface);border-top:1px solid var(--line);padding:34px 0 38px}
.strip-title{font-size:1.05rem;margin:0 0 14px}
.tool-grid{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:10px}
.tool-card{display:flex;gap:12px;align-items:center;padding:14px;border:1px solid var(--line);border-radius:12px;text-decoration:none;color:var(--ink);background:var(--bg);height:100%;transition:border-color .15s,background .15s}
.tool-card:hover{border-color:var(--brand-line);background:var(--brand-soft);color:var(--ink)}
.tool-card strong{display:block;font-size:.95rem;line-height:1.45}
.tool-card small{display:block;color:var(--muted);font-size:.78rem;line-height:1.4}
.tool-ico{flex:none;width:40px;height:40px;border-radius:10px;background:var(--surface);border:1px solid var(--brand-line);display:grid;place-items:center}
.tool-ico svg{width:22px;height:22px;fill:none;stroke:var(--brand);stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.site-footer{background:#15302d;color:#c9d9d6;padding:40px 0 20px;font-size:.88rem}
.footer-inner{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:28px}
@media (max-width:760px){.footer-inner{grid-template-columns:1fr}}
.footer-name{font-weight:700;color:#fff;font-size:1.05rem;margin:0 0 8px}
.footer-note{margin:0;line-height:1.75;color:#9fb8b4;font-size:.82rem}
.footer-h{font-weight:700;color:#fff;margin:0 0 6px;font-size:.86rem}
.footer-h:not(:first-child){margin-top:16px}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin:3px 0}
.site-footer a{color:#c9d9d6;text-decoration:none}
.site-footer a:hover{color:#fff;text-decoration:underline}
.copy{text-align:center;color:#7f9a96;font-size:.76rem;margin:30px 0 0}

/* home */
.home-hero{padding:26px 0 4px}
.home-hero h1{font-size:clamp(1.5rem,5vw,2.15rem);margin:0 0 6px}
.home-hero h1 em{font-style:normal;color:var(--brand)}

@media print{.site-header,.tool-strip,.site-footer,.breadcrumb,.ad-slot,.actions{display:none}body{background:#fff}.card{box-shadow:none}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
.result{scroll-margin-top:76px}
table.data td.num:first-child{text-align:left}