/* NeckCheck 解説ガイド 共通スタイル（about.html のトーンを継承） */
:root{--pink:#E91B89;--pink-text:#FF6AB2;--pink-bright:#FF3D9A;--purple:#7B37A8;--blue:#5BAADE;--green:#34D399;--amber:#F59E0B;--dark:#1A1A1A;--dark2:#242424;--dark3:#2E2E2E;--border:#333}
*{margin:0;padding:0;box-sizing:border-box}
/* AdSense 自動広告の固定幅枠がページ全体の横スクロールを作るのを抑える（index.html と同じ対処） */
html{overflow-x:clip}
.google-auto-placed{max-width:100%;overflow-x:clip}
.google-auto-placed ins,.google-auto-placed iframe{max-width:100%}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:4px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}}
body{font-family:'Noto Sans JP',sans-serif;background:var(--dark);color:#ccc;font-size:16px;line-height:1.85;text-wrap:pretty}

header{background:linear-gradient(135deg,#1A1A1A 0%,#2C1A3E 100%);border-bottom:2px solid var(--pink);padding:24px;text-align:center}
.site-title{font-family:'Oswald',sans-serif;font-size:28px;font-weight:700;letter-spacing:4px;background:linear-gradient(90deg,var(--pink),var(--purple),var(--blue));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;text-transform:uppercase}
.site-title a{color:inherit;text-decoration:none;display:inline-block;padding:2px 0}
.site-subtitle{font-size:13px;color:#9E9E9E;letter-spacing:1px;margin-top:4px}

nav{background:var(--dark2);border-bottom:1px solid var(--border);padding:12px 24px;text-align:center;font-size:13px;position:sticky;top:0;z-index:100}
/* タップ領域は 44px 以上を確保する（モバイル主体の流入なので押しにくさは離脱に直結する） */
nav a{color:#9E9E9E;text-decoration:none;margin:0 2px;padding:11px 10px;min-height:44px;display:inline-flex;align-items:center;transition:color .2s}
nav a:hover{color:var(--pink)}
nav a[aria-current="page"]{color:var(--pink-text)}

article{max-width:760px;margin:0 auto;padding:48px 24px 80px}
.breadcrumb{font-family:'Oswald',sans-serif;font-size:11px;letter-spacing:2px;color:#9A9A9A;margin-bottom:6px;text-transform:uppercase}
.breadcrumb a{color:var(--pink-text);text-decoration:none;display:inline-flex;align-items:center;justify-content:center;min-height:44px;min-width:44px;padding:0 4px}
.breadcrumb a:hover{text-decoration:underline}

h1{font-size:32px;font-weight:700;line-height:1.3;margin-bottom:18px;color:#fff;text-wrap:balance}
@media(max-width:520px){h1{font-size:25px}}
.lead{font-size:16px;color:#bbb;border-left:3px solid var(--pink);padding-left:18px;margin:24px 0 32px}
h2{font-family:'Oswald',sans-serif;font-size:18px;font-weight:700;color:var(--pink-bright);margin:44px 0 14px;letter-spacing:2px;padding-bottom:8px;border-bottom:1px solid var(--border);text-transform:uppercase;text-wrap:balance}
h3{font-size:16px;font-weight:700;color:#fff;margin:26px 0 10px;text-wrap:balance}
p{font-size:15px;color:#aaa;margin-bottom:14px}
p strong{color:#eee}
ul,ol{padding-left:24px;margin-bottom:18px}
li{color:#aaa;font-size:15px;margin-bottom:10px;line-height:1.85}
li strong{color:#fff}
a{color:var(--blue);text-decoration:none}
a:hover{color:var(--pink);text-decoration:underline}
code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;background:var(--dark3);border:1px solid var(--border);border-radius:4px;padding:1px 6px;color:#ddd}

/* 数値を含む表：カウントアップ・比較で桁が踊らないように tabular-nums */
.table-wrap{overflow-x:auto;margin:20px 0;-webkit-overflow-scrolling:touch}
table{border-collapse:collapse;width:100%;min-width:460px;font-size:14px;font-variant-numeric:tabular-nums}
th,td{border:1px solid var(--border);padding:10px 12px;text-align:left;vertical-align:top}
th{background:var(--dark3);color:#fff;font-family:'Oswald',sans-serif;font-size:12px;letter-spacing:1px;text-transform:uppercase;font-weight:500;white-space:nowrap}
td{color:#aaa}
td strong{color:#fff}

/* 診断ツールへのCTA（本ガイドの主目的＝送客） */
.tool-cta{background:linear-gradient(135deg,rgba(233,27,137,.10),rgba(123,55,168,.10));border:1px solid rgba(233,27,137,.35);border-radius:10px;padding:24px;margin:32px 0;text-align:center}
.tool-cta .cta-kicker{font-family:'Oswald',sans-serif;font-size:11px;letter-spacing:2px;color:var(--pink-text);text-transform:uppercase;margin-bottom:8px}
.tool-cta h2{border:none;padding:0;margin:0 0 8px;color:#fff;font-size:19px;letter-spacing:1px;text-transform:none;font-family:'Noto Sans JP',sans-serif}
.tool-cta p{font-size:14px;color:#bbb;margin-bottom:18px}
.tool-cta-btn{display:inline-block;background:linear-gradient(90deg,var(--pink),var(--purple));color:#fff;font-weight:700;font-size:15px;padding:14px 32px;border-radius:8px;text-decoration:none;transition:filter .2s,transform .2s}
.tool-cta-btn:hover{color:#fff;text-decoration:none;filter:brightness(1.12);transform:translateY(-1px)}
.tool-cta-note{font-size:12px;color:#9E9E9E;margin:12px 0 0}

/* 補足・注意ボックス */
.note-box{background:var(--dark2);border:1px solid var(--border);border-radius:8px;padding:20px 24px;margin:24px 0}
.note-box h3{font-family:'Oswald',sans-serif;font-size:12px;letter-spacing:2px;color:var(--blue);text-transform:uppercase;margin:0 0 10px}
.note-box p:last-child,.note-box ul:last-child{margin-bottom:0}
.limit-box{background:rgba(233,27,137,.05);border:1px solid rgba(233,27,137,.30);border-radius:8px;padding:20px 24px;margin:24px 0}
.limit-box h3{font-family:'Oswald',sans-serif;font-size:12px;letter-spacing:2px;color:var(--pink-text);text-transform:uppercase;margin:0 0 10px}
.limit-box ul:last-child,.limit-box p:last-child{margin-bottom:0}

/* Amazon 導線（app.js の cta-box と同一トーン・PR表記必須） */
.shop-box{background:var(--dark2);border:1px solid var(--border);border-left:3px solid var(--amber);border-radius:8px;padding:20px 24px;margin:28px 0}
.shop-label{font-family:'Oswald',sans-serif;font-size:11px;letter-spacing:2px;color:var(--amber);text-transform:uppercase;margin-bottom:6px}
.shop-lead{font-size:14px;color:#bbb;margin-bottom:14px}
.shop-links{display:flex;flex-wrap:wrap;gap:10px}
.shop-link{display:inline-block;background:var(--dark3);border:1px solid #444;border-radius:6px;padding:9px 16px;font-size:14px;color:#eee;text-decoration:none;transition:border-color .2s,color .2s}
.shop-link:hover{border-color:var(--amber);color:#fff;text-decoration:none}
.shop-note{font-size:12px;color:#9E9E9E;margin:14px 0 0}

/* ガイド一覧カード（ハブ・関連記事共用） */
.guide-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:16px;margin:24px 0}
@media(max-width:560px){.guide-grid{grid-template-columns:1fr}}
.guide-card{display:block;background:var(--dark2);border:1px solid var(--border);border-radius:8px;padding:20px;text-decoration:none;transition:border-color .2s,transform .2s}
.guide-card:hover{border-color:var(--pink);text-decoration:none;transform:translateY(-2px)}
.guide-card .gc-tag{font-family:'Oswald',sans-serif;font-size:10px;letter-spacing:1.5px;color:var(--blue);text-transform:uppercase;margin-bottom:8px}
.guide-card .gc-title{font-size:16px;font-weight:700;color:#fff;line-height:1.5;margin-bottom:8px;text-wrap:balance}
.guide-card .gc-desc{font-size:13px;color:#A5A5A5;line-height:1.7;margin:0}

/* Cookie同意バナー（index.html と同一仕様・同一キー neckcheck-cookie を共有） */
#cookie-banner{position:fixed;bottom:0;left:0;right:0;background:rgba(20,20,20,.97);border-top:1px solid var(--border);padding:14px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;z-index:1000;font-size:13px;color:#A5A5A5}
#cookie-banner.hidden{display:none}
#cookie-banner p{margin:0;font-size:13px;color:#A5A5A5}
#cookie-banner a{color:var(--blue);text-decoration:none;display:inline-flex;align-items:center;min-height:44px;padding:0 2px}
.cookie-actions{display:flex;gap:10px;flex-shrink:0}
.cookie-btn{min-height:44px;padding:10px 20px;border-radius:6px;border:none;cursor:pointer;font-size:13px;font-family:inherit;transition:opacity .2s}
.cookie-btn:hover{opacity:.85}
.cookie-accept{background:#DB1580;color:#fff}
.cookie-reject{background:var(--border);color:#A5A5A5}
@media(max-width:480px){#cookie-banner{flex-direction:column;align-items:flex-start}}

.updated{margin-top:48px;font-size:13px;color:#9E9E9E;text-align:center}
footer{background:#111;border-top:1px solid #222;padding:32px 24px;text-align:center;font-size:13px;color:#9A9A9A}
.footer-logo{font-family:'Oswald',sans-serif;font-size:20px;letter-spacing:4px;background:linear-gradient(90deg,#E91B89,#7B37A8,#5BAADE);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:16px;text-transform:uppercase}
footer a{color:#9E9E9E;margin:0 2px;padding:11px 10px;min-height:44px;display:inline-flex;align-items:center}
.disclaimer{font-size:11px;color:#8C8C8C;margin-top:12px;max-width:640px;margin-left:auto;margin-right:auto;line-height:1.7}