@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700;800;900&display=swap');

:root{
  --blue:#0054A7;
  --blue-dark:#003D7A;
  --blue-soft:#E6EDFF;
  --navy:#101C3D;
  --orange:#FD7E2F;
  --orange-soft:#FFE9DA;
  --green:#1C9A6C;
  --green-soft:#E4F6EE;
  --bg-tint:#EEF4FF;
  --bg-tint2:#F6F9FF;
  --line:#E1E8F7;
  --gray:#5A6478;
  --white:#FFFFFF;
  --radius-lg:28px;
  --radius-md:20px;
  --radius-sm:14px;
  --ease:cubic-bezier(.22,1,.36,1);
  --header-h:84px;
  --header-h-scrolled:72px;
}

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box;}

html{scroll-behavior:smooth;}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
}

body{
  font-family:"Noto Sans JP","Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic",sans-serif;
  color:var(--navy);
  background:var(--white);
  line-height:1.7;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

body.lock{overflow:hidden;height:100vh;}

img{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;}
button{font:inherit;border:none;background:none;cursor:pointer;color:inherit;}

.container{
  width:100%;
  max-width:1180px;
  margin:0 auto;
  padding:0 24px;
}

/* アンカー遷移の着地点はヘッダーが縮小した状態(--header-h-scrolled)で決まる。
   --header-h(84px)のままだと、着地後にヘッダー下端との間に12pxの隙間ができる */
section{scroll-margin-top:var(--header-h-scrolled);}

/* ============ loader ============ */
.loader{
  position:fixed;inset:0;
  z-index:10000;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(160deg,#FFFFFF 0%,#EEF4FF 100%);
  transition:opacity .7s var(--ease), visibility .7s var(--ease);
}
.loader-inner{
  display:flex;flex-direction:column;align-items:center;gap:22px;
}
.loader-mark{
  width:96px;height:77px;
  opacity:0;
  transform:scale(.72) translateY(10px);
  animation:loaderPop 1s var(--ease) .15s forwards;
  filter:drop-shadow(0 10px 26px rgba(0,87,254,.25));
}
.loader-bar{
  width:150px;height:4px;border-radius:99px;
  background:var(--line);
  overflow:hidden;
}
.loader-bar span{
  display:block;height:100%;width:0%;
  border-radius:99px;
  background:var(--blue);
  animation:loaderFill 1.35s var(--ease) .35s forwards;
}
@keyframes loaderPop{
  0%{opacity:0;transform:scale(.72) translateY(10px);}
  60%{opacity:1;transform:scale(1.05) translateY(0);}
  100%{opacity:1;transform:scale(1) translateY(0);}
}
@keyframes loaderFill{
  0%{width:0%;}
  100%{width:100%;}
}
.loader.done{
  opacity:0;visibility:hidden;
  transform:scale(1.03);
}

body:not(.loaded) .reveal-on-load{opacity:0;}
.reveal-on-load{
  opacity:0;
  transform:translateY(26px);
  transition:opacity .9s var(--ease), transform .9s var(--ease);
}
body.loaded .reveal-on-load{
  opacity:1;
  transform:translateY(0);
}
.reveal-on-load.d1{transition-delay:.08s;}
.reveal-on-load.d2{transition-delay:.18s;}
.reveal-on-load.d3{transition-delay:.28s;}
.reveal-on-load.d4{transition-delay:.38s;}

/* ============ scroll reveal ============ */
[data-reveal]{
  opacity:0;
  transform:translateY(32px);
  transition:opacity .8s var(--ease), transform .8s var(--ease);
}
[data-reveal].in-view{
  opacity:1;
  transform:translateY(0);
}
[data-reveal="fade"]{transform:none;}
[data-reveal-group] > *{transition-delay:calc(var(--i, 0) * 90ms);}

/* ============ header ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;
  z-index:900;
  height:var(--header-h);
  display:flex;align-items:center;
  transition:background-color .4s var(--ease), box-shadow .4s var(--ease), backdrop-filter .4s var(--ease), height .3s var(--ease);
}
.site-header .container{
  display:flex;align-items:center;justify-content:space-between;
  width:100%;
}
.site-header.scrolled{
  height:var(--header-h-scrolled);
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(14px) saturate(160%);
  box-shadow:0 6px 24px rgba(16,28,61,.08);
}
/* flex:none が無いと、ナビが収まらない幅でロゴ画像だけが圧縮されて潰れる
   (1024px で実測 129px→29px)。潰す代わりにハンバーガーへ切り替える */
.logo{display:flex;align-items:center;gap:9px;flex:none;}
.logo-horizontal{display:block;width:auto;height:32px;}
.logo-mark-img{display:inline-block;background-image:url("../images/logo-mark.png");background-size:contain;background-position:center;background-repeat:no-repeat;flex:none;}
.logo-icon{width:32px;height:26px;}
.logo-text{
  font-weight:900;font-size:19px;color:var(--navy);letter-spacing:.01em;
}

.nav-desktop{display:flex;align-items:center;gap:10px;}
.nav-desktop a{
  position:relative;
  padding:10px 12px;
  font-size:14px;font-weight:700;color:var(--navy);
  /* 7項目+ロゴ+CTAで1180pxのコンテナがほぼ埋まる(実測の空きは8px)。折り返すと
     2行になってヘッダーが崩れるため、改行を禁止する。項目間はgapで確保し、
     これ以上広げるならCTAかロゴ側を削る必要がある */
  white-space:nowrap;
  transition:color .25s ease;
}
.nav-desktop a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:6px;height:2px;
  background:var(--blue);
  transform:scaleX(0);transform-origin:left;
  transition:transform .32s var(--ease);
  border-radius:2px;
}
.nav-desktop a:hover{color:var(--blue);}
.nav-desktop a:hover::after,
.nav-desktop a.active::after{transform:scaleX(1);}
.nav-desktop a.active{color:var(--blue);}

.header-cta{display:flex;align-items:center;gap:10px;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;
  border-radius:99px;
  font-weight:800;font-size:15px;
  transition:transform .35s var(--ease), box-shadow .35s var(--ease), background-color .3s ease, color .3s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--blue);color:#fff;
  box-shadow:0 10px 24px rgba(0,87,254,.28);
}
.btn-primary:hover{
  transform:translateY(-3px);
  box-shadow:0 16px 30px rgba(0,87,254,.36);
  background:var(--blue-dark);
}
.btn-outline{
  background:transparent;color:var(--navy);
  border:1.5px solid var(--line);
}
.btn-outline:hover{
  border-color:var(--blue);color:var(--blue);
  transform:translateY(-3px);
}
.btn-header{padding:11px 22px;font-size:14px;}
.btn-block{width:100%;}
.btn svg{width:16px;height:16px;transition:transform .3s var(--ease);}
.btn:hover svg{transform:translate(3px,-2px);}

.nav-toggle{
  display:none;
  width:42px;height:42px;border-radius:12px;
  align-items:center;justify-content:center;
  background:var(--bg-tint2);border:1px solid var(--line);
}
.nav-toggle span{
  position:relative;width:18px;height:2px;background:var(--navy);border-radius:2px;
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--navy);border-radius:2px;
  transition:transform .3s var(--ease), opacity .3s ease;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle.open span{background:transparent;}
.nav-toggle.open span::before{transform:translateY(6px) rotate(45deg);}
.nav-toggle.open span::after{transform:translateY(-6px) rotate(-45deg);}

.nav-mobile{
  position:fixed;top:0;right:0;
  height:100vh;width:min(320px,86vw);
  background:#fff;
  z-index:950;
  box-shadow:-16px 0 40px rgba(16,28,61,.14);
  transform:translateX(100%);
  transition:transform .45s var(--ease);
  padding:100px 30px 40px;
  display:flex;flex-direction:column;gap:6px;
  /* 8リンク+CTAで必要高は約665px。body.lock が背面のスクロールを止めるため、
     これが無いと低い画面(例 1179x600)でCTAが画面外に出て到達できなくなる */
  overflow-y:auto;overscroll-behavior:contain;
}
.nav-mobile.open{transform:translateX(0);}
.nav-mobile a{
  padding:14px 6px;font-size:17px;font-weight:800;
  border-bottom:1px solid var(--line);
}
.nav-mobile .btn{margin-top:20px;}
.nav-scrim{
  position:fixed;inset:0;background:rgba(16,28,61,.35);
  z-index:940;opacity:0;pointer-events:none;
  transition:opacity .4s ease;
}
.nav-scrim.open{opacity:1;pointer-events:auto;}

/* ============ hero ============ */
.hero{
  position:relative;
  padding:calc(var(--header-h) + 76px) 0 90px;
  background:
    radial-gradient(680px 420px at 82% -6%, rgba(0,87,254,.10), transparent 60%),
    radial-gradient(560px 360px at 6% 12%, rgba(253,126,47,.09), transparent 60%),
    linear-gradient(180deg,#FFFFFF 0%, var(--bg-tint2) 100%);
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:var(--line);
}
.hero-inner{text-align:center;max-width:1120px;margin:0 auto;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 18px;border-radius:99px;
  border:1.5px solid var(--blue);
  color:var(--blue);font-weight:800;font-size:13px;letter-spacing:.06em;
  margin-bottom:22px;
  background:#fff;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--blue);animation:pulse 1.8s ease-in-out infinite;}
@keyframes pulse{
  0%,100%{opacity:1;transform:scale(1);}
  50%{opacity:.4;transform:scale(1.4);}
}
.lead-tag{
  display:block;color:var(--orange);font-weight:800;font-size:15px;
  letter-spacing:.08em;margin-bottom:14px;
}
h1.hero-title{
  font-size:clamp(30px,5vw,52px);
  font-weight:900;line-height:1.45;letter-spacing:.005em;
  color:var(--navy);
}
h1.hero-title .em{
  color:var(--blue);
  background:linear-gradient(90deg,var(--blue),var(--blue));
  -webkit-background-clip:text;background-clip:text;
}
.hero-sub{
  margin-top:22px;font-size:16px;color:var(--gray);line-height:1.9;
}
.hero-sub b{color:var(--navy);font-weight:800;}
.hero-actions{
  margin-top:36px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap;
}
.hero-note{margin-top:18px;font-size:12.5px;color:var(--gray);font-weight:700;}

.hero-visual{
  margin:64px auto 0;max-width:920px;
  border-radius:var(--radius-lg);
  background:#fff;
  border:1px solid var(--line);
  box-shadow:0 30px 70px -20px rgba(16,28,61,.25);
  overflow:hidden;position:relative;
}
.hero-visual .browser-dots{display:flex;align-items:center;gap:6px;height:38px;padding:0 18px;background:#F7F8FA;border-bottom:1px solid var(--line);}
.hero-visual .browser-dots span{width:9px;height:9px;border-radius:50%;background:#C7CBD4;}
.slack-app{display:grid;grid-template-columns:174px minmax(0,1fr);min-height:336px;text-align:left;}
.slack-sidebar{padding:17px 11px;background:#3F0E40;color:#EEDBEE;}
.slack-workspace{display:flex;align-items:center;gap:8px;padding:0 7px 18px;color:#fff;font-size:13px;font-weight:900;border-bottom:1px solid rgba(255,255,255,.18);}
.slack-workspace-mark{width:20px;height:20px;border-radius:5px;background:linear-gradient(135deg,#36C5F0 0 25%,#2EB67D 25% 50%,#ECB22E 50% 75%,#E01E5A 75%);}
.slack-nav-label{display:flex;align-items:center;gap:6px;margin:17px 7px 7px;color:#CDB6CD;font-size:10px;font-weight:800;letter-spacing:.08em;}
.slack-nav-label.apps{margin:17px 7px 7px;color:#CDB6CD;font-size:10px;letter-spacing:.08em;}
.slack-nav-icon{width:15px;height:15px;flex:none;color:#F3E6F3;}
.slack-nav-item{display:block;padding:7px;border-radius:6px;font-size:11.5px;font-weight:700;color:#EEDBEE;}
.slack-nav-item.active{background:#1164A3;color:#fff;}
.slack-nav-item + .slack-nav-item{margin-top:2px;}
.slack-nav-item.app-item{display:flex;align-items:center;}
.slack-app-mark{display:block;flex:none;width:19px;height:19px;margin-right:7px;border-radius:5px;object-fit:cover;background:#fff;}
.slack-main{display:flex;flex-direction:column;min-width:0;background:#fff;}
.slack-channel{display:flex;align-items:center;gap:8px;padding:13px 20px;border-bottom:1px solid #E8EBF0;color:#1D1C1D;font-size:15px;font-weight:900;}
.slack-channel span{color:#7A8497;font-size:11px;font-weight:600;}
.slack-messages{padding:12px 20px 4px;}
.slack-msg{display:flex;gap:11px;padding:10px 0;border-radius:var(--radius-sm);}
.slack-avatar{
  width:34px;height:34px;border-radius:8px;flex:none;
  display:flex;align-items:center;justify-content:center;
  font-weight:900;color:#fff;font-size:12px;
}
.slack-avatar.q{background:#4A154B;}
.slack-avatar.a{background:#fff;border:1px solid #DDE2EB;}
.slack-bot-logo{width:26px;height:26px;object-fit:contain;}
.slack-channel-logo{width:22px;height:22px;object-fit:contain;}
.slack-body{text-align:left;}
.slack-name{font-weight:900;font-size:13px;color:#1D1C1D;}
.slack-time{margin-left:6px;color:#7A8497;font-size:10.5px;font-weight:500;}
.slack-name .tag{
  display:inline-block;margin-left:6px;padding:1px 7px;border-radius:99px;
  background:var(--blue-soft);color:var(--blue);font-size:10.5px;font-weight:800;
  vertical-align:middle;
}
.slack-text{font-size:13px;color:#1D1C1D;margin-top:3px;line-height:1.65;}
.slack-text .score{
  display:inline-flex;align-items:center;gap:5px;margin-top:7px;
  font-size:10.5px;color:var(--green);font-weight:800;
  background:var(--green-soft);padding:4px 8px;border-radius:5px;
}
.slack-reference{display:block;margin-top:7px;padding:7px 9px;border-left:3px solid var(--blue);border-radius:0 6px 6px 0;background:#F7F9FC;color:var(--blue);font-size:10.5px;font-weight:800;}
.slack-reactions{display:flex;gap:6px;margin-top:7px;}
.slack-reaction{padding:5px 8px;border-radius:5px;font-size:10px;font-weight:900;white-space:nowrap;}
.slack-reaction.helpful{background:#00876A;color:#fff;}
.slack-reaction.neutral{border:1px solid #A7A7A7;background:#fff;color:#2D2D2D;}
.slack-reaction.unhelpful{background:#E91E63;color:#fff;}
.slack-composer{margin:8px 20px 16px;padding:8px 11px;border:1px solid #C9CED8;border-radius:7px;color:#9AA3B2;font-size:11px;}
.slack-usage-note{max-width:920px;margin:14px auto 0;padding:0 12px;text-align:center;color:var(--gray);font-size:12px;line-height:1.7;}

/* ============ section heads ============ */
.section-pad{padding:110px 0;}
.section-head{text-align:center;max-width:660px;margin:0 auto 56px;}
.section-eyebrow{
  color:var(--orange);font-weight:800;font-size:13.5px;letter-spacing:.1em;
  display:block;margin-bottom:12px;
}
.section-title{
  font-size:clamp(24px,3.4vw,36px);font-weight:900;letter-spacing:.01em;
}
.section-title .accent{color:var(--blue);}
.section-title .num{
  color:var(--blue);font-size:1.2em;
  margin:0 4px;
}
/* 最終行に数文字だけ取り残される(「〜です。」だけ改行される)のを防ぐ */
.section-desc{margin-top:16px;color:var(--gray);font-size:15.5px;text-wrap:balance;}

.alt-bg{background:var(--bg-tint2);}

/* ============ pain cards ============ */
.pain-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:22px;
}
.pain-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  padding:30px 26px;
  transition:transform .45s var(--ease), box-shadow .45s var(--ease), border-color .45s ease;
}
.pain-card:hover{
  transform:translateY(-8px);
  box-shadow:0 24px 48px -18px rgba(16,28,61,.22);
  border-color:transparent;
}
.pain-icon{
  width:40px;height:40px;border-radius:12px;
  background:var(--orange);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-weight:900;margin-bottom:18px;
  transition:transform .45s var(--ease);
}
.pain-card:hover .pain-icon{transform:rotate(-8deg) scale(1.08);}
.pain-card p{font-size:15px;font-weight:600;color:var(--navy);line-height:1.8;}

/* ============ reasons ============ */
.reasons{display:flex;flex-direction:column;gap:0;}
.reason{
  display:grid;grid-template-columns:76px 1fr;gap:26px;
  padding:36px 8px;
  border-bottom:1px solid var(--line);
  transition:background-color .4s ease;
  border-radius:var(--radius-sm);
}
.reason:hover{background:var(--bg-tint2);}
.reason:last-child{border-bottom:none;}
.reason-num{
  width:56px;height:56px;border-radius:50%;
  background:var(--blue);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:22px;font-weight:900;
  box-shadow:0 12px 22px -6px rgba(0,87,254,.4);
  transition:transform .4s var(--ease);
}
.reason:hover .reason-num{transform:scale(1.1) rotate(-6deg);}
.reason h3{font-size:19px;font-weight:800;margin-bottom:8px;}
.reason h3 .hl{color:var(--blue);}
.reason p{color:var(--gray);font-size:14.5px;}

/* ============ management screen ============ */
.management-layout{
  display:grid;grid-template-columns:minmax(0,1.65fr) minmax(260px,.85fr);gap:32px;align-items:center;
}
.management-shot{
  overflow:hidden;border:1px solid var(--line);border-radius:var(--radius-lg);background:#fff;
  box-shadow:0 28px 64px -28px rgba(16,28,61,.28);
}
.management-shot img{width:100%;height:auto;}
.management-copy{display:flex;flex-direction:column;gap:20px;}
#management .section-title .accent{white-space:nowrap;}
.management-point{padding-left:18px;border-left:4px solid var(--blue);}
.management-point:nth-child(3){border-left-color:var(--orange);}
.management-point:nth-child(4){border-left-color:var(--green);}
.management-point h3{font-size:16px;font-weight:900;margin-bottom:5px;}
.management-point p{font-size:13.5px;color:var(--gray);}

/* ============ cycle ============ */
.cycle-legend{
  display:flex;justify-content:center;gap:26px;margin-bottom:36px;flex-wrap:wrap;
}
.legend-item{display:flex;align-items:center;gap:8px;font-size:13.5px;font-weight:700;color:var(--navy);}
.legend-dot{width:11px;height:11px;border-radius:4px;}
.legend-dot.orange{background:var(--orange);}
.legend-dot.blue{background:var(--blue);}

.cycle-track{
  display:grid;grid-template-columns:170px repeat(5,1fr);gap:12px;
}
.cycle-row-label{
  display:flex;flex-direction:column;justify-content:center;
  padding:18px 16px;border-radius:var(--radius-sm);
  font-weight:800;font-size:14px;line-height:1.6;
}
.cycle-row-label.human{background:var(--orange-soft);color:#B04A0A;}
.cycle-row-label.ai{background:var(--blue-soft);color:var(--blue-dark);}
.cycle-row-label small{display:block;font-weight:600;font-size:11.5px;margin-top:4px;opacity:.8;}

.step-card{
  border-radius:var(--radius-sm);
  padding:18px 16px;
  border:1.5px dashed var(--line);
  min-height:112px;
  display:flex;flex-direction:column;gap:6px;
  transition:transform .4s var(--ease), box-shadow .4s var(--ease), border-color .3s ease;
}
.step-card.empty{
  align-items:center;justify-content:center;color:#B7C1D9;font-size:12.5px;font-weight:700;
}
.step-card.human{border-style:solid;background:var(--orange-soft);border-color:transparent;}
.step-card.ai{border-style:solid;background:var(--blue-soft);border-color:transparent;}
.step-card:not(.empty):hover{transform:translateY(-6px);box-shadow:0 18px 34px -14px rgba(16,28,61,.25);}
.step-tag{
  align-self:flex-start;
  font-size:10.5px;font-weight:900;letter-spacing:.05em;
  padding:3px 9px;border-radius:99px;color:#fff;
}
.step-card.human .step-tag{background:var(--orange);}
.step-card.ai .step-tag{background:var(--blue);}
.step-card strong{font-size:13.5px;}
.step-card span.desc{font-size:11.5px;color:var(--gray);line-height:1.6;}

.cycle-phases{
  display:grid;grid-template-columns:170px repeat(5,1fr);
  margin-top:10px;
}
.cycle-phases div{text-align:center;font-size:12px;color:var(--gray);font-weight:700;}

.cycle-note{
  margin-top:40px;
  display:flex;align-items:center;justify-content:center;gap:12px;
  text-align:center;
  padding:20px 26px;border-radius:99px;
  background:var(--green-soft);color:var(--green);
  font-weight:800;font-size:15px;
  border:1px solid rgba(28,154,108,.25);
}
.cycle-note svg{flex:none;animation:spin 3.2s linear infinite;}
@keyframes spin{to{transform:rotate(360deg);}}

.cycle-footnote{
  margin-top:28px;text-align:center;color:var(--gray);font-size:14.5px;
  background:var(--bg-tint2);border-radius:var(--radius-md);padding:22px;
}
.cycle-footnote b{color:var(--navy);}

.operation-flow{
  display:grid;grid-template-columns:repeat(5,1fr);gap:24px;
}
.operation-step{position:relative;min-height:210px;}
.operation-step:not(:last-child)::after{
  content:"\2192";position:absolute;right:-20px;top:50%;transform:translateY(-50%);
  color:#A9B4CA;font-size:22px;font-weight:900;
}
.operation-step .step-card{height:100%;min-height:210px;padding:22px 18px;}
.operation-step .step-card strong{font-size:16px;line-height:1.5;}
.operation-step .step-card span.desc{font-size:13px;line-height:1.75;}
.operation-step .step-owner{font-size:11px;font-weight:900;color:var(--gray);margin-bottom:2px;}

/* ============ security ============ */
.sec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.sec-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  padding:28px 24px;
  transition:transform .45s var(--ease), box-shadow .45s var(--ease);
}
.sec-card:hover{transform:translateY(-8px);box-shadow:0 24px 48px -18px rgba(16,28,61,.2);}
.sec-card .sec-dot{
  width:10px;height:10px;border-radius:50%;background:var(--orange);display:inline-block;margin-right:8px;
}
.sec-card h3{font-size:16.5px;font-weight:800;margin-bottom:10px;}
.sec-card p{font-size:14px;color:var(--gray);}

/* ============ demo video ============ */
.demo-video-card{
  max-width:920px;margin:0 auto;border:1px solid var(--line);border-radius:var(--radius-lg);
  background:#fff;overflow:hidden;box-shadow:0 28px 64px -28px rgba(16,28,61,.24);
}
.demo-video-placeholder{
  aspect-ratio:16/9;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:16px;text-align:center;padding:32px;
  background:
    radial-gradient(420px 220px at 50% 46%,rgba(0,87,254,.13),transparent 68%),
    linear-gradient(145deg,#F8FAFF,#EDF3FF);
}
.demo-play{
  width:82px;height:82px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:var(--blue);color:#fff;box-shadow:0 18px 36px rgba(0,87,254,.3);
}
.demo-play svg{width:30px;height:30px;margin-left:4px;}
.demo-video-placeholder strong{font-size:20px;font-weight:900;}
.demo-video-placeholder span{font-size:13px;color:var(--gray);}
.demo-chapters{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);
}
.demo-chapter{padding:20px 18px;border-right:1px solid var(--line);}
.demo-chapter:last-child{border-right:none;}
.demo-chapter b{display:block;color:var(--blue);font-size:12px;margin-bottom:5px;}
.demo-chapter span{font-size:13px;font-weight:800;}
.demo-disclaimer{margin-top:20px;text-align:center;color:var(--gray);font-size:12.5px;}

/* ============ faq ============ */
.accordion{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:14px;}
.accordion-item{
  border:1px solid var(--line);border-radius:var(--radius-md);
  background:#fff;overflow:hidden;
  transition:box-shadow .4s ease, border-color .4s ease;
}
.accordion-item.open{box-shadow:0 20px 40px -20px rgba(16,28,61,.2);border-color:var(--blue-soft);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 26px;text-align:left;font-weight:800;font-size:15.5px;
}
.faq-q .q-mark{
  flex:none;width:26px;height:26px;color:var(--blue);font-weight:900;font-size:15px;
}
.faq-plus{
  flex:none;width:30px;height:30px;border-radius:50%;background:var(--bg-tint2);
  position:relative;transition:background-color .3s ease, transform .4s var(--ease);
}
.faq-plus::before,.faq-plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--blue);
  transform:translate(-50%,-50%);border-radius:2px;
}
.faq-plus::before{width:12px;height:2px;transition:opacity .3s ease;}
.faq-plus::after{width:2px;height:12px;}
.accordion-item.open .faq-plus{background:var(--blue);transform:rotate(90deg);}
.accordion-item.open .faq-plus::before,.accordion-item.open .faq-plus::after{background:#fff;}
/* 開いた状態は「−」にする。アイコン全体が 90deg 回るので、残すのは縦棒(::after)側。
   横棒(::before)を残すと回転で縦になり「｜」に見えてしまう */
.accordion-item.open .faq-plus::before{opacity:0;}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .5s var(--ease);
}
.faq-a-inner{padding:0 26px 24px 68px;color:var(--gray);font-size:14.5px;line-height:1.85;}

/* ============ cta ============ */
.cta{
  border-radius:var(--radius-lg);
  background:var(--blue);
  padding:60px 50px;
  text-align:center;
  position:relative;overflow:hidden;
  color:#fff;
}
.cta::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(420px 240px at 85% 0%, rgba(255,255,255,.18), transparent 60%);
}
.cta h2{font-size:clamp(22px,3vw,32px);font-weight:900;position:relative;}
.cta h2 .accent{color:#FFD9B8;}
.cta p{margin-top:14px;color:rgba(255,255,255,.85);font-size:15px;position:relative;}
.cta-actions{margin-top:30px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap;position:relative;}
.cta .btn-primary{background:#fff;color:var(--blue-dark);box-shadow:0 14px 30px rgba(0,0,0,.18);}
.cta .btn-primary:hover{background:#F3F6FF;}
.cta .btn-outline{border-color:rgba(255,255,255,.5);color:#fff;}
.cta .btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.08);}

/* ============ footer ============ */
footer{
  background:var(--navy);color:#C7CFE6;
  padding:64px 0 30px;
}
.footer-top{
  display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;
  padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-brand .logo-text{color:#fff;}
.footer-brand p{margin-top:14px;font-size:13.5px;color:#93A0C2;max-width:280px;}
.footer-cols{display:flex;gap:64px;flex-wrap:wrap;}
.footer-col h4{color:#fff;font-size:13.5px;font-weight:800;margin-bottom:16px;letter-spacing:.04em;}
.footer-col a,.footer-col p{
  display:block;font-size:13.5px;color:#93A0C2;margin-bottom:10px;
  transition:color .25s ease;
}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  padding-top:26px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:12.5px;color:#7C88AA;
}

/* ============ contact page ============ */
.page-hero{
  padding:calc(var(--header-h) + 56px) 0 60px;
  background:linear-gradient(180deg,#fff, var(--bg-tint2));
  text-align:center;
}
.breadcrumb{
  display:flex;gap:8px;justify-content:center;align-items:center;
  font-size:13px;color:var(--gray);margin-bottom:18px;
}
.breadcrumb a{color:var(--blue);font-weight:700;}
.page-hero h1{font-size:clamp(26px,4vw,38px);font-weight:900;}
.page-hero p{margin-top:14px;color:var(--gray);font-size:15px;}
.inline-contact-hero{padding:100px 0 42px;}
.contact-body{background:linear-gradient(180deg,var(--bg-tint2),#fff 45%);}

.contact-wrap{
  display:grid;grid-template-columns:1fr 1.5fr;gap:36px;
  align-items:start;
  padding-bottom:120px;
}
.contact-info{
  background:var(--bg-tint2);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:32px 28px;position:sticky;top:calc(var(--header-h) + 24px);
}
.contact-info h3{font-size:17px;font-weight:800;margin-bottom:18px;}
.info-item{display:flex;gap:14px;margin-bottom:20px;}
.info-icon{
  width:38px;height:38px;border-radius:11px;flex:none;
  background:#fff;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--blue);
}
.info-item h4{font-size:13.5px;font-weight:800;margin-bottom:3px;}
.info-item p,.info-item a{font-size:13.5px;color:var(--gray);}
.info-item a:hover{color:var(--blue);}
.info-flow{margin-top:26px;padding-top:22px;border-top:1px solid var(--line);}
.info-flow li{
  display:flex;gap:12px;font-size:13px;color:var(--gray);margin-bottom:14px;
}
.info-flow li b{
  flex:none;width:22px;height:22px;border-radius:50%;background:var(--blue);color:#fff;
  font-size:11px;display:flex;align-items:center;justify-content:center;font-weight:800;
}

.contact-form-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:54px 46px;text-align:center;
  box-shadow:0 30px 70px -30px rgba(16,28,61,.18);
}
.contact-form-icon{
  width:72px;height:72px;margin:0 auto 22px;border-radius:22px;
  display:flex;align-items:center;justify-content:center;
  background:var(--blue-soft);color:var(--blue);
}
.contact-form-card .section-eyebrow{margin-bottom:8px;}
.contact-form-card > p{margin:14px auto 28px;max-width:500px;color:var(--gray);font-size:14px;}
.contact-form-link[aria-disabled="true"]{
  background:#A9B4CA;box-shadow:none;cursor:not-allowed;pointer-events:none;
}
.contact-form-link[aria-disabled="true"]:hover{transform:none;background:#A9B4CA;box-shadow:none;}
.contact-form-card .contact-form-note{margin:18px auto 0;font-size:12.5px;}
.contact-form-note a{color:var(--blue);font-weight:800;}
.contact-form-note a:hover{text-decoration:underline;}
.contact-form-card.is-ready .contact-form-icon{
  background:var(--green-soft);color:var(--green);
}

/* ============ legal page ============ */
.legal-body{
  background:linear-gradient(180deg,var(--bg-tint2),#fff 20%);
  padding:56px 0 110px;
}
.legal-wrap{max-width:760px;margin:0 auto;}
.legal-section{margin-top:46px;}
.legal-section h2{
  font-size:19px;font-weight:900;
  padding-bottom:12px;margin-bottom:18px;
  border-bottom:2px solid var(--blue-soft);
}
.legal-section p{font-size:14.5px;color:var(--gray);margin-bottom:14px;}
.legal-section p:last-child{margin-bottom:0;}
.legal-section b{color:var(--navy);font-weight:800;}
.legal-section ul{margin-bottom:14px;}
.legal-section li{
  position:relative;padding-left:18px;
  font-size:14.5px;color:var(--gray);margin-bottom:9px;
}
.legal-section li::before{
  content:"";position:absolute;left:2px;top:.68em;
  width:6px;height:6px;border-radius:50%;background:var(--blue);
}
.legal-section a{
  color:var(--blue);font-weight:700;
  text-decoration:underline;text-underline-offset:3px;
}
.legal-section a:hover{color:var(--blue-dark);}

.legal-table-scroll{overflow-x:auto;margin-bottom:16px;-webkit-overflow-scrolling:touch;}
.legal-table{
  width:100%;min-width:520px;border-collapse:collapse;
  font-size:13.5px;line-height:1.85;
}
.legal-table th,.legal-table td{
  border:1px solid var(--line);padding:13px 16px;
  text-align:left;vertical-align:top;
}
.legal-table th{
  background:var(--bg-tint);color:var(--navy);
  font-weight:800;white-space:nowrap;width:150px;
}
.legal-table td{color:var(--gray);}

.legal-note{
  background:var(--bg-tint2);border:1px solid var(--line);
  border-radius:var(--radius-md);padding:22px 24px;
}
.legal-note p{font-size:13.5px;color:var(--gray);margin-bottom:12px;}
.legal-note p b{color:var(--navy);font-weight:800;}
.legal-note a{
  color:var(--blue);font-weight:700;
  text-decoration:underline;text-underline-offset:3px;
}

.legal-meta{
  margin-top:52px;padding-top:24px;border-top:1px solid var(--line);
  font-size:13px;color:var(--gray);line-height:2;
}

/* ============ responsive ============ */
@media (max-width:960px){
  .nav-desktop,.header-cta .btn-header{display:none;}
  .nav-toggle{display:flex;}
  .pain-grid,.sec-grid{grid-template-columns:1fr;}
  .cycle-track,.cycle-phases{grid-template-columns:1fr;}
  .cycle-row-label{border-radius:var(--radius-sm) var(--radius-sm) 0 0;}
  .contact-wrap{grid-template-columns:1fr;}
  .management-layout{grid-template-columns:1fr;}
  .operation-flow{grid-template-columns:1fr 1fr;}
  .slack-app{grid-template-columns:1fr;}
  .slack-sidebar{display:none;}
  .demo-chapters{grid-template-columns:1fr 1fr;}
  .demo-chapter:nth-child(2){border-right:none;}
  .demo-chapter:nth-child(-n+2){border-bottom:1px solid var(--line);}
  .operation-step:not(:last-child)::after{display:none;}
  .contact-info{position:static;}
  .footer-top{flex-direction:column;}
}
@media (max-width:640px){
  .section-pad{padding:76px 0;}
  .reason{grid-template-columns:52px 1fr;gap:16px;padding:26px 4px;}
  .reason-num{width:44px;height:44px;font-size:17px;}
  .cta{padding:42px 24px;}
  .form-row.two{grid-template-columns:1fr;}
  .contact-form-card{padding:42px 24px;}
  .hero{padding-top:calc(var(--header-h) + 40px);}
  /* clamp の下限 30px が SP では大きすぎ、見出しが句の途中で折り返していた。
     21px なら「〜に、」「〜即答。」が1行ずつに収まり、意図どおりの2行になる */
  h1.hero-title{font-size:21px;line-height:1.6;}
  .hero-sub{font-size:14.5px;line-height:1.85;}
  .lead-tag{font-size:13.5px;}
  /* PC用の強制改行。SPでは行が細切れになるため解除して自然に流す */
  .br-pc{display:none;}
  .operation-flow{grid-template-columns:1fr;}
  .operation-step,.operation-step .step-card{min-height:auto;}
  .hero-visual{border-radius:18px;}
  .slack-channel{padding:12px 15px;}
  .slack-messages{padding:10px 15px 2px;}
  .slack-composer{margin:8px 15px 14px;}
  .demo-play{width:66px;height:66px;}
  .demo-video-placeholder strong{font-size:17px;}
}

@media (max-width:640px){
  .legal-body{padding:40px 0 80px;}
  .legal-section{margin-top:38px;}
  .legal-section h2{font-size:17px;}
  .legal-note{padding:18px 18px;}

  /* 横スクロールを避け、見出し／内容の縦積みに切り替える */
  .legal-table-scroll{overflow-x:visible;}
  .legal-table{min-width:0;}
  .legal-table tbody,.legal-table tr,.legal-table th,.legal-table td{display:block;width:auto;}
  .legal-table tr + tr{margin-top:-1px;}
  .legal-table th{white-space:normal;border-bottom:none;}
  .legal-table td{border-top:none;}
}

/* ナビ7項目(gap:10px)+ロゴ+CTAの必要幅は約1124px。コンテナ内寸が
   これを上回るのは、コンテナが最大幅(1180px)に達したときだけ(内寸1132px)。
   切替点を 1179px にすると、Windows等の非オーバーレイ型スクロールバー環境で
   破綻する: メディアクエリはスクロールバーを含む幅で判定するため 1180px で
   デスクトップ表示になるが、実コンテンツ幅は約1165px・内寸1117pxしかなく
   CTAがはみ出す。スクロールバー幅20pxまで吸収できるよう 1199px にする。
   既存の 960px ブロックは他のレイアウト規則も含むため動かさない */
@media (max-width:1199px){
  .nav-desktop,.header-cta .btn-header{display:none;}
  .nav-toggle{display:flex;}
}