/* RIDERA 下層ページ共通スタイル（黒×シャンパンゴールド×明朝） */
:root{
  --ink:#0e1b3d; --ink-2:#13234a; --ink-3:#1a2c57;
  --paper:#f4f6fa; --paper-2:#e9edf5; --white:#fff;
  --line:#dbe2ee; --line-d:rgba(255,255,255,.1);
  --sub:#5a6478; --sub-l:#949fb6;
  --gold:#b9975e; --gold-l:#d8bc8a; --gold-d:#96793f;
  --max:1080px;
  --serif:"Shippori Mincho B1","Noto Serif JP",serif;
  --sans:"Noto Sans JP",-apple-system,"Hiragino Kaku Gothic ProN",sans-serif;
  --en:"EB Garamond",serif;
  --ease:cubic-bezier(.16,.6,.2,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--ink);background:var(--paper);line-height:2;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;font-size:15px}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--max);margin:0 auto;padding:0 28px}

/* reveal */
.rv{opacity:0;transform:translateY(26px);transition:opacity 1.1s var(--ease),transform 1.1s var(--ease)}
.rv.on{opacity:1;transform:none}
.rv.d1{transition-delay:.12s}.rv.d2{transition-delay:.24s}.rv.d3{transition-delay:.36s}

/* header */
header{position:fixed;inset:0 0 auto 0;z-index:100;background:rgba(14,27,61,.92);
  backdrop-filter:blur(16px);border-bottom:1px solid var(--line-d)}
header .bar{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{font-family:var(--en);font-weight:600;font-size:20px;letter-spacing:.26em;color:#fff;display:flex;align-items:center;gap:12px}
.logo .mark{width:30px;height:30px;border:1px solid var(--gold);display:grid;place-items:center;position:relative}
.logo .mark::after{content:"";position:absolute;inset:3px;border:1px solid rgba(185,151,94,.4)}
.logo .mark span{color:var(--gold-l);font-size:13px;font-weight:600}
nav ul{display:flex;gap:30px;list-style:none;font-size:12.5px;font-weight:500;color:#e2e8f4;letter-spacing:.1em}
nav a{position:relative;padding:6px 0}
nav a::after{content:"";position:absolute;left:50%;bottom:0;width:0;height:1px;background:var(--gold);transition:.4s;transform:translateX(-50%)}
nav a:hover::after{width:100%}
.hcta{border:1px solid var(--gold);color:var(--gold-l);padding:11px 24px;font-size:11.5px;font-weight:500;letter-spacing:.16em;transition:.3s}
.hcta:hover{background:var(--gold);color:var(--ink)}
@media(max-width:860px){nav ul{display:none}}

/* page hero */
.phero{background:var(--ink);color:#fff;padding:168px 0 88px;position:relative;overflow:hidden}
.phero::before{content:"";position:absolute;right:-160px;top:-160px;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(185,151,94,.16),transparent 65%)}
.phero .crumb{font-family:var(--en);font-size:11px;letter-spacing:.28em;color:var(--sub-l);text-transform:uppercase;margin-bottom:26px}
.phero .crumb a:hover{color:var(--gold-l)}
.phero .crumb i{font-style:normal;padding:0 10px;color:var(--gold-d)}
.phero .en{font-family:var(--en);font-size:12px;letter-spacing:.4em;color:var(--gold-l);text-transform:uppercase;display:flex;align-items:center;gap:14px}
.phero .en::before{content:"";width:44px;height:1px;background:var(--gold)}
.phero h1,.phero .phero-t{font-family:var(--serif);font-size:clamp(28px,4.4vw,46px);font-weight:600;letter-spacing:.07em;line-height:1.6;margin-top:16px}
.phero p.sub{color:#d7deee;margin-top:20px;max-width:640px;font-size:15.5px;line-height:2.25}

/* sections */
section{padding:100px 0}
.eyebrow{font-family:var(--en);color:var(--gold-d);font-weight:600;letter-spacing:.4em;font-size:12px;
  display:flex;align-items:center;gap:16px;text-transform:uppercase}
.eyebrow::before{content:"";width:40px;height:1px;background:var(--gold)}
.stitle{font-family:var(--serif);font-size:clamp(23px,3.2vw,34px);font-weight:600;margin-top:14px;line-height:1.7;letter-spacing:.05em}
.shead{margin-bottom:52px}
.center{text-align:center}
.center .eyebrow{justify-content:center}
.center .eyebrow::before{display:none}
.slead{color:var(--sub);font-size:15px;max-width:700px;margin:20px auto 0;line-height:2.2}
.soft{background:var(--paper-2)}
.dark{background:var(--ink);color:#fff}
.dark .stitle{color:#fff}
.dark .eyebrow{color:var(--gold-l)}
.dark p{color:#aeb9d2}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:14px;padding:17px 38px;font-weight:500;font-size:13.5px;
  letter-spacing:.14em;transition:.3s;position:relative;overflow:hidden}
.btn .lb{position:relative;z-index:1}
.btn .ar{width:24px;height:1px;background:currentColor;position:relative;transition:.3s;z-index:1}
.btn .ar::after{content:"";position:absolute;right:0;top:-3px;width:7px;height:7px;border-top:1px solid currentColor;transform:rotate(45deg)}
.btn:hover .ar{width:36px}
.btn-p{background:var(--gold);color:var(--ink)}
.btn-p:hover{background:var(--gold-l)}
.btn-g{background:var(--ink);color:#fff}
.btn-g:hover{background:var(--gold);color:var(--ink)}
.btn-o{border:1px solid var(--gold);color:var(--gold-d)}
.btn-o:hover{background:var(--gold);color:var(--ink)}

/* detail blocks */
.dblock{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:64px 0;border-top:1px solid var(--line)}
.dblock:first-of-type{border-top:none}
@media(max-width:860px){.dblock{grid-template-columns:1fr;gap:36px}}
.dblock .dn{font-family:var(--en);font-size:12px;color:var(--gold);letter-spacing:.3em}
.dblock h3{font-family:var(--serif);font-size:24px;font-weight:600;margin:14px 0 16px;letter-spacing:.05em}
.dblock p{color:var(--sub);font-size:14.5px;line-height:2.2}
.dblock .ph{overflow:hidden;box-shadow:0 34px 76px rgba(14,27,61,.18)}
.dblock .ph img{width:100%;aspect-ratio:16/11;object-fit:cover;filter:saturate(.72);transition:transform 1.2s var(--ease)}
.dblock .ph:hover img{transform:scale(1.05)}
.dblock ul.feat{list-style:none;margin-top:22px;display:grid;gap:10px}
.dblock ul.feat li{position:relative;padding-left:26px;font-size:14px;color:var(--ink);font-weight:500}
.dblock ul.feat li::before{content:"";position:absolute;left:0;top:.9em;width:14px;height:1px;background:var(--gold)}

/* diagram */
.diagram-box{background:var(--ink);padding:56px 40px;margin-top:20px}
.diagram-box svg{width:100%;height:auto;display:block}
.diagram-cap{font-size:12.5px;color:var(--sub-l);letter-spacing:.12em;text-align:center;margin-top:20px;font-family:var(--en)}
@media(max-width:640px){.diagram-box{padding:28px 16px}}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:34px;margin-top:14px}
@media(max-width:820px){.steps{grid-template-columns:1fr}}
.step{border-top:1px solid var(--line-d);padding-top:26px}
.step .sn{font-family:var(--en);font-size:12px;color:var(--gold);letter-spacing:.3em}
.step h4{font-family:var(--serif);font-size:17.5px;font-weight:600;margin:12px 0 8px;color:#fff;letter-spacing:.05em}
.step p{color:#9aa6c0;font-size:13px;line-height:2}

/* form */
.formcard{max-width:760px;margin:0 auto;background:var(--white);border:1px solid var(--line);padding:56px 52px}
@media(max-width:640px){.formcard{padding:36px 22px}}
.fgrp{margin-bottom:30px}
.fgrp label{display:block;font-weight:700;font-size:13.5px;letter-spacing:.08em;margin-bottom:10px}
.fgrp label .req{display:inline-block;margin-left:10px;font-size:10px;color:#fff;background:var(--gold-d);padding:2px 10px;letter-spacing:.14em;vertical-align:1px}
.fgrp input[type=text],.fgrp input[type=email],.fgrp select,.fgrp textarea{
  width:100%;border:1px solid var(--line);background:var(--paper);padding:15px 16px;font-size:15px;
  font-family:var(--sans);transition:.3s;border-radius:0;-webkit-appearance:none}
.fgrp input:focus,.fgrp select:focus,.fgrp textarea:focus{outline:none;border-color:var(--gold);background:#fff}
.fgrp textarea{min-height:150px;resize:vertical}
.fgrp .agree{display:flex;align-items:center;gap:10px;font-size:13.5px;justify-content:center}
.fgrp .agree a{color:var(--gold-d);text-decoration:underline}
.fsubmit{text-align:center;margin-top:36px}
.fsubmit button{cursor:pointer;border:none;font-family:var(--sans)}
.hp-field{position:absolute;left:-9999px;opacity:0;height:0;overflow:hidden}
.fnote{font-size:12.5px;color:var(--sub-l);text-align:center;margin-top:18px}

/* blog list */
.bposts{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
@media(max-width:900px){.bposts{grid-template-columns:1fr}}
.bpost{background:var(--white);border:1px solid var(--line);transition:.45s;overflow:hidden}
.bpost:hover{transform:translateY(-6px);box-shadow:0 26px 60px rgba(14,27,61,.12)}
.bpost .bthumb{aspect-ratio:16/9;overflow:hidden;background:var(--ink)}
.bpost .bthumb img{width:100%;height:100%;object-fit:cover;filter:saturate(.7)}
.bpost .bbody{padding:26px 26px 28px}
.bpost .bcat{display:inline-block;font-size:10.5px;color:var(--gold-d);border:1px solid var(--gold);padding:4px 13px;letter-spacing:.12em}
.bpost h3{font-family:var(--serif);font-size:15.5px;font-weight:600;margin:14px 0 10px;line-height:1.9}
.bpost .bdate{font-family:var(--en);font-size:12px;color:var(--sub-l);letter-spacing:.12em}

/* article */
.article{max-width:760px;margin:0 auto;background:var(--white);border:1px solid var(--line);padding:64px 58px}
@media(max-width:640px){.article{padding:36px 22px}}
.article .adate{font-family:var(--en);font-size:12px;color:var(--sub-l);letter-spacing:.16em}
.article h1.atitle{font-family:var(--serif);font-size:clamp(22px,3vw,30px);font-weight:600;line-height:1.9;margin:14px 0 34px;letter-spacing:.04em}
.article h2{font-family:var(--serif);font-size:20px;font-weight:600;margin:44px 0 16px;padding-left:16px;border-left:2px solid var(--gold);letter-spacing:.04em}
.article h3{font-family:var(--serif);font-size:17px;font-weight:600;margin:32px 0 12px}
.article p{color:#333c52;font-size:15px;line-height:2.3;margin-bottom:20px}
.article ul,.article ol{margin:0 0 20px 24px;color:#333c52;line-height:2.2}
.article strong{font-weight:700}
.article img{margin:26px 0}
.article a{color:var(--gold-d);text-decoration:underline}
.article .author{display:flex;gap:20px;align-items:flex-start;margin-top:48px;padding-top:30px;border-top:1px solid var(--line)}
.article .author img{width:68px;height:68px;object-fit:cover;object-position:center 20%;border-radius:50%;flex:0 0 auto;margin:0}
.article .author .an{font-family:var(--serif);font-size:16px;font-weight:600;letter-spacing:.08em}
.article .author .an span{font-size:11px;color:var(--sub);margin-left:10px;letter-spacing:.1em}
.article .author p{font-size:12.5px;color:var(--sub);line-height:1.9;margin:8px 0 0}
.article .author a{font-family:var(--en);font-size:11px;letter-spacing:.18em;color:var(--gold-d);text-decoration:none;border-bottom:1px solid var(--gold);display:inline-block;margin-top:8px}
.article .fig{background:var(--ink);padding:34px 30px;margin:34px 0}
@media(max-width:640px){.article .fig{padding:22px 14px;overflow-x:auto;-webkit-overflow-scrolling:touch}}
.article .fig svg{width:100%;height:auto;display:block}
@media(max-width:640px){.article .fig svg{min-width:480px}}
.article .figcap{font-family:var(--en);font-size:12px;color:var(--sub-l);letter-spacing:.1em;text-align:center;margin:-22px 0 34px}

/* cta band */
.ctaband{background:var(--ink);color:#fff;text-align:center;padding:96px 0;position:relative;overflow:hidden}
.ctaband::before{content:"";position:absolute;left:-140px;top:-140px;width:440px;height:440px;border-radius:50%;
  background:radial-gradient(circle,rgba(185,151,94,.16),transparent 65%)}
.ctaband h2{font-family:var(--serif);font-size:clamp(22px,3vw,32px);font-weight:600;letter-spacing:.08em;position:relative}
.ctaband p{color:#aeb9d2;margin:18px auto 34px;max-width:560px;position:relative}
.ctaband .btn{position:relative}

/* footer */
footer{background:#08122c;color:#8794ad;padding:64px 0 34px;font-size:13.5px}
.fcols{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;margin-bottom:44px}
footer .logo{font-size:18px}
footer address{font-style:normal;line-height:2.1;margin-top:16px;font-size:13px}
footer ul{list-style:none;line-height:2.4;letter-spacing:.06em}
footer a:hover{color:var(--gold-l)}
.fhead{font-family:var(--en);font-size:11px;letter-spacing:.38em;color:#5f6a85;font-weight:600;margin-bottom:14px;text-transform:uppercase}
.copy{border-top:1px solid rgba(255,255,255,.07);padding-top:22px;font-family:var(--en);font-size:11.5px;color:#5a6488;letter-spacing:.14em;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* ===== hamburger menu ===== */
body.lock{overflow:hidden}
.menu-btn{display:none;width:44px;height:44px;flex-direction:column;justify-content:center;align-items:center;gap:6px;
  background:none;border:none;cursor:pointer;position:relative;z-index:210;padding:0}
.menu-btn span{display:block;width:24px;height:1.5px;background:var(--gold-l);transition:.35s}
.menu-btn.open span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
.menu-btn.open span:nth-child(2){opacity:0}
.menu-btn.open span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}
.mnav{position:fixed;inset:0;z-index:200;background:rgba(9,18,42,.97);backdrop-filter:blur(10px);
  display:grid;place-items:center;opacity:0;pointer-events:none;transition:opacity .4s}
.mnav.open{opacity:1;pointer-events:auto}
.mnav ul{list-style:none;text-align:center;display:grid;gap:28px;padding:0}
.mnav a{font-family:var(--serif);font-size:19px;color:#fff;letter-spacing:.16em}
.mnav a:hover{color:var(--gold-l)}
@media(max-width:860px){.menu-btn{display:flex}}

/* ===== mobile ===== */
@media(max-width:640px){
  .wrap{padding:0 20px}
  header .bar{height:60px}
  .logo{font-size:17px;gap:10px}
  .logo .mark{width:26px;height:26px}
  .hcta{display:none}
  section{padding:64px 0}
  .phero{padding:118px 0 56px}
  .phero h1{font-size:25px;line-height:1.75}
  .phero p.sub{font-size:15px;margin-top:16px;line-height:2.15;color:#e4eaf7}
  .phero .crumb{font-size:10.5px;margin-bottom:18px;color:#bcc6dd}
  .shead{margin-bottom:38px}
  .slead{font-size:13.5px}
  .dblock{padding:44px 0;gap:26px}
  .dblock h3{font-size:20px}
  .dblock p{font-size:13.5px}
  .diagram-box{overflow-x:auto;-webkit-overflow-scrolling:touch}
  .diagram-box svg{min-width:720px}
  .diagram-cap::before{content:"（図は左右にスクロールできます）";display:block;font-size:11px;margin-bottom:6px;color:#8794ad}
  .steps{gap:24px}
  .formcard{padding:32px 18px}
  .fgrp{margin-bottom:22px}
  .article{padding:32px 20px}
  .article h1.atitle{font-size:20px}
  .ctaband{padding:64px 0}
  .ctaband p{font-size:13.5px}
  .btn{padding:15px 26px;font-size:12.5px}
  .bposts{gap:20px}
  .copy{justify-content:center;text-align:center}
}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important}
}

/* ===== 相棒AI社員（全ページ左下常駐） ===== */
.aibot-fab{position:fixed;left:18px;bottom:16px;z-index:95;width:54px;cursor:pointer;user-select:none;
  -webkit-tap-highlight-color:transparent}
.aibot-fab svg{width:100%;height:auto;display:block;animation:aibob 2.6s ease-in-out infinite}
@keyframes aibob{0%,100%{transform:translateY(0)}50%{transform:translateY(-4px)}}
.aibot-fab .eye{transform-box:fill-box;transform-origin:center;animation:aiblink 4.5s infinite}
@keyframes aiblink{0%,92%,100%{transform:scaleY(1)}95%{transform:scaleY(.12)}}
.aibot-fab.jump svg{animation:aijump .5s ease}
@keyframes aijump{0%{transform:translateY(0)}40%{transform:translateY(-16px)}70%{transform:translateY(2px)}100%{transform:translateY(0)}}
.aibot-bub{position:absolute;left:60px;bottom:8px;width:210px;background:var(--ink);color:#e2e8f4;
  border:1px solid var(--gold);padding:12px 14px;font-size:12px;line-height:1.8;letter-spacing:.03em;
  opacity:0;pointer-events:none;transform:translateY(6px);transition:.3s}
.aibot-bub::before{content:"";position:absolute;left:-7px;bottom:14px;width:12px;height:12px;background:var(--ink);
  border-left:1px solid var(--gold);border-bottom:1px solid var(--gold);transform:rotate(45deg)}
.aibot-bub a{color:var(--gold-l);text-decoration:underline}
.aibot-fab.say .aibot-bub{opacity:1;pointer-events:auto;transform:translateY(0)}
@media(max-width:640px){.aibot-fab{width:44px;left:12px;bottom:12px}.aibot-bub{width:180px;font-size:11.5px}}

/* ===== クリックのピクセル飛沫 ===== */
.clickpix{position:fixed;width:8px;height:8px;z-index:999;pointer-events:none;background:var(--gold-l);
  animation:pixfly .55s ease-out forwards}
@keyframes pixfly{
  0%{opacity:1;transform:translate(0,0)}
  100%{opacity:0;transform:translate(var(--dx),var(--dy)) rotate(90deg)}
}

/* ===== 押した感（全ボタン共通） ===== */
.btn:active,.hcta:active{transform:scale(.96)}
.card:active,.post:active,.bpost:active{transform:scale(.99)}

@media (prefers-reduced-motion: reduce){
  .aibot-fab svg,.aibot-fab .eye{animation:none}
  .clickpix{display:none}
}

/* ===== 相棒の名刺（ホバー） ===== */
.aibot-fab::after{content:"No.004 アテンド担当";position:absolute;left:62px;bottom:40px;background:var(--ink);
  color:var(--gold-l);border:1px solid var(--gold);padding:4px 10px;font-size:10px;letter-spacing:.1em;
  white-space:nowrap;opacity:0;transition:.25s;pointer-events:none}
.aibot-fab:hover::after{opacity:1}
.aibot-fab.say::after{opacity:0}

/* ===== 隠しコマンド：AI社員パレード ===== */
.parade{position:fixed;bottom:10px;left:-70px;z-index:94;pointer-events:none;animation:paradewalk linear forwards}
.parade svg{width:100%;height:auto;display:block;animation:aibob .45s steps(2) infinite}
@keyframes paradewalk{to{transform:translateX(115vw)}}
@media (prefers-reduced-motion: reduce){.parade{display:none}}