/* ============================================================
   PORT AI トップページ
   カラー・UI方針は企画書 8「デザイン方針」に準拠
   - PORT NAVY / PORT BLUE を中心に、グラデーションはロゴと重要部分のみ
   - 十分な余白、大きな見出し、シールドと接続ノードのモチーフ
   ============================================================ */

:root{
  /* 企画書 8 基本カラー */
  --navy:#071A3C;
  --blue:#176BFF;
  --cyan:#58D6FF;
  --bg:#F6F9FE;
  --white:#FFFFFF;

  /* 派生色 */
  --blue-dark:#0846B8;
  --navy-2:#0C2451;
  --text:#0B1D3E;
  --text-mid:#495D80;
  --text-sub:#6C7E9C;
  --line:#E1E9F6;
  --line-strong:#CBD9EF;

  --radius:14px;
  --radius-lg:22px;
  --shadow-sm:0 2px 8px rgba(7,26,60,.05);
  --shadow:0 12px 32px rgba(7,26,60,.08);
  --shadow-lg:0 24px 60px rgba(7,26,60,.13);

  --container:1180px;
  --ease:cubic-bezier(.22,.68,.28,1);
  --font:"Hiragino Kaku Gothic ProN","Hiragino Sans","Noto Sans JP","Yu Gothic Medium","Yu Gothic",Meiryo,system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:92px;-webkit-text-size-adjust:100%;}
body{
  margin:0;font-family:var(--font);color:var(--text);background:var(--white);
  font-size:16px;line-height:1.9;font-feature-settings:"palt";
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img,svg{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
ul,ol,dl{margin:0;padding:0;list-style:none;}
h1,h2,h3,p,dt,dd,figure,table,caption{margin:0;}
button,input,select,textarea{font:inherit;color:inherit;}

.sr-only,.skip-link{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}
.skip-link:focus{position:fixed;top:12px;left:12px;width:auto;height:auto;clip:auto;margin:0;padding:10px 18px;background:var(--blue);color:#fff;border-radius:8px;z-index:999;}
:focus-visible{outline:3px solid var(--cyan);outline-offset:3px;border-radius:4px;}

.container{width:min(100% - 48px,var(--container));margin-inline:auto;}
.pc{display:inline;}
.sp{display:none;}

/* ---------- ボタン（CTA優先度：資料請求＞相談＞デモ＞ログイン） ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:8px;font-weight:700;font-size:14px;
  border:1.5px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
}
.btn--lg{padding:16px 32px;font-size:16px;}
.btn--full{width:100%;}
/* グラデーションは主要CTAに限定（企画書 8） */
.btn--primary{background:linear-gradient(100deg,var(--blue),var(--blue-dark));color:#fff;box-shadow:0 6px 20px rgba(23,107,255,.28);}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(23,107,255,.38);}
.btn--outline{border-color:var(--line-strong);background:#fff;color:var(--navy);}
.btn--outline:hover{border-color:var(--blue);color:var(--blue);transform:translateY(-2px);}
.btn--quiet{border-color:var(--line-strong);color:var(--text-mid);}
.btn--quiet:hover{border-color:var(--blue);color:var(--blue);}
.btn--text{color:var(--text-mid);padding-inline:10px;}
.btn--text:hover{color:var(--blue);}
.btn--white{background:#fff;color:var(--blue-dark);box-shadow:0 8px 22px rgba(0,0,0,.18);}
.btn--white:hover{transform:translateY(-2px);}
.arrow{transition:transform .25s var(--ease);}
.btn:hover .arrow,a:hover .arrow{transform:translateX(4px);}

/* ---------- ヘッダー ---------- */
.header{position:fixed;inset:0 0 auto;z-index:100;padding:14px 0;transition:background .3s var(--ease),box-shadow .3s var(--ease),padding .3s var(--ease);}
.header.is-stuck{background:rgba(255,255,255,.9);backdrop-filter:blur(14px);box-shadow:0 1px 0 var(--line);padding:9px 0;}
.header__inner{display:flex;align-items:center;justify-content:space-between;gap:24px;}
.header__logo img{width:142px;height:auto;}
.nav{display:flex;align-items:center;gap:30px;margin-left:auto;}
.nav__list{display:flex;gap:26px;font-size:14.5px;font-weight:600;}
.nav__list a{position:relative;color:var(--navy);transition:color .2s;}
.nav__list a::after{content:"";position:absolute;left:0;bottom:-7px;width:100%;height:2px;background:var(--blue);transform:scaleX(0);transform-origin:right;transition:transform .3s var(--ease);}
.nav__list a:hover{color:var(--blue);}
.nav__list a:hover::after{transform:scaleX(1);transform-origin:left;}
.nav__cta{display:flex;align-items:center;gap:8px;}

.nav-toggle{display:none;width:44px;height:44px;border:0;background:transparent;cursor:pointer;padding:10px;}
.nav-toggle span{display:block;height:2px;background:var(--navy);border-radius:2px;transition:transform .3s var(--ease),opacity .2s;}
.nav-toggle span+span{margin-top:6px;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(8px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-8px) rotate(-45deg);}

/* ---------- ファーストビュー ---------- */
.hero{position:relative;padding:150px 0 96px;background:var(--bg);overflow:hidden;}
.hero__bg{position:absolute;inset:0;pointer-events:none;}
.hero__grid{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(23,107,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(23,107,255,.05) 1px,transparent 1px);
  background-size:60px 60px;
  mask-image:radial-gradient(ellipse 80% 70% at 60% 40%,#000,transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse 80% 70% at 60% 40%,#000,transparent 75%);
}
.hero__veil{position:absolute;inset:auto 0 0;height:180px;background:linear-gradient(to bottom,rgba(246,249,254,0),var(--white));}
.hero__inner{position:relative;display:grid;grid-template-columns:1.02fr .98fr;gap:48px;align-items:center;}

.tagline{
  font-size:12px;font-weight:800;letter-spacing:.22em;color:var(--blue);
  margin-bottom:24px;display:flex;align-items:center;gap:12px;
}
.tagline::after{content:"";flex:1;max-width:120px;height:1px;background:linear-gradient(90deg,var(--blue),transparent);}

.hero__title{font-size:clamp(31px,4.4vw,55px);line-height:1.4;font-weight:800;letter-spacing:-.02em;color:var(--navy);margin-bottom:26px;}
.hero__title .accent{color:var(--blue);}
.hero__lead{font-size:17px;color:var(--text-mid);margin-bottom:36px;}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;}

/* 7要素の接続図 */
.hero__visual{display:flex;justify-content:center;}
.network{width:min(520px,100%);height:auto;}
.network__shield{transform-box:fill-box;animation:shieldFloat 7s ease-in-out infinite;}
@keyframes shieldFloat{0%,100%{transform:translate(206.6px,192.2px) scale(.72);}50%{transform:translate(206.6px,180px) scale(.72);}}
.network__lines line{stroke-dasharray:1 0;}
/* 線上をデータが中心から外へ流れる */
.network__flow line{animation:flow 3.4s linear infinite;}
.network__flow line:nth-child(2){animation-delay:-.5s;}
.network__flow line:nth-child(3){animation-delay:-1s;}
.network__flow line:nth-child(4){animation-delay:-1.5s;}
.network__flow line:nth-child(5){animation-delay:-2s;}
.network__flow line:nth-child(6){animation-delay:-2.5s;}
.network__flow line:nth-child(7){animation-delay:-3s;}
@keyframes flow{from{stroke-dashoffset:51;}to{stroke-dashoffset:0;}}
.node rect{fill:#fff;stroke:var(--line-strong);stroke-width:1.2;filter:drop-shadow(0 6px 14px rgba(7,26,60,.09));}
.node text{
  fill:var(--navy);font-family:var(--font);font-size:16px;font-weight:700;
  text-anchor:middle;dominant-baseline:middle;
}
.node{animation:nodeIn .7s var(--ease) both;animation-delay:var(--d);}
@keyframes nodeIn{from{opacity:0;transform:scale(.9);}to{opacity:1;transform:none;}}

/* ---------- セクション共通 ---------- */
.section{padding:112px 0;}
.section--tint{background:var(--bg);}
.section__head{max-width:760px;margin-bottom:56px;}
.eyebrow{font-size:11.5px;font-weight:800;letter-spacing:.2em;color:var(--blue);text-transform:uppercase;margin-bottom:16px;}
.eyebrow--light{color:var(--cyan);}
.section__title{font-size:clamp(25px,3.3vw,40px);line-height:1.48;font-weight:800;letter-spacing:-.02em;color:var(--navy);}
.section__title--light{color:#fff;}
.section__lead{margin-top:20px;font-size:16px;color:var(--text-mid);}
.section__lead--light{color:rgba(255,255,255,.76);}

[data-reveal]{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease);}
[data-reveal].is-visible{opacity:1;transform:none;}

/* ---------- 課題提起 ---------- */
.problem__list{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;}
.problem__item{
  display:flex;gap:14px;align-items:flex-start;padding:26px 24px;
  background:var(--bg);border-radius:var(--radius);border:1px solid var(--line);
}
.problem__no{font-size:13px;font-weight:800;color:var(--blue);opacity:.55;letter-spacing:.06em;flex:none;line-height:1.9;}
.problem__item p{font-size:15px;font-weight:600;line-height:1.8;color:var(--text);}
.problem__closing{
  margin-top:44px;padding:32px;border-radius:var(--radius);text-align:center;
  font-size:clamp(16px,2vw,20px);font-weight:700;line-height:1.9;color:var(--navy);
  background:linear-gradient(120deg,rgba(23,107,255,.07),rgba(88,214,255,.1));
  border:1px solid rgba(23,107,255,.16);
}

/* ---------- 全体像 ---------- */
.arch{
  padding:44px 32px;background:#fff;border-radius:var(--radius-lg);
  border:1px solid var(--line);box-shadow:var(--shadow);text-align:center;
}
.arch__crown{display:flex;justify-content:center;}
.arch__brand{
  display:inline-block;padding:10px 30px;border-radius:8px;color:#fff;
  font-size:15px;font-weight:800;letter-spacing:.1em;
  background:linear-gradient(100deg,var(--navy),var(--blue-dark));
}
.arch__connector{width:1.5px;height:26px;margin:0 auto;background:var(--line-strong);}
.arch__base{
  padding:22px 24px;border-radius:var(--radius);
  background:linear-gradient(100deg,rgba(23,107,255,.1),rgba(88,214,255,.14));
  border:1px solid rgba(23,107,255,.2);
}
.arch__baseTitle{display:block;font-size:18px;font-weight:800;color:var(--navy);}
.arch__baseNote{display:block;margin-top:4px;font-size:13px;color:var(--text-mid);}
.arch__rowLabel{
  font-size:11.5px;font-weight:800;letter-spacing:.14em;color:var(--text-sub);
  margin-bottom:12px;
}
.arch__row{display:grid;gap:14px;margin-bottom:8px;}
.arch__row li{
  padding:18px 16px;border-radius:var(--radius);background:#fff;
  border:1px solid var(--line);transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.arch__row li:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm);border-color:var(--blue);}
.arch__row strong{display:block;font-size:14.5px;font-weight:800;color:var(--navy);letter-spacing:.01em;}
.arch__row span{display:block;margin-top:5px;font-size:12.5px;color:var(--text-sub);line-height:1.7;}
.arch__row--core{grid-template-columns:repeat(2,1fr);max-width:660px;margin-inline:auto;}
.arch__row--core li{border-color:rgba(23,107,255,.32);background:rgba(23,107,255,.035);}
.arch__row--apps{grid-template-columns:repeat(5,1fr);}
/* 基盤から各Portへ分岐する線 */
.arch__fan{display:flex;justify-content:center;gap:0;height:34px;margin:8px 0 18px;position:relative;}
.arch__fan::before{content:"";position:absolute;top:0;left:50%;width:1.5px;height:14px;background:var(--line-strong);}
.arch__fan::after{content:"";position:absolute;top:14px;left:10%;right:10%;height:1.5px;background:var(--line-strong);}
.arch__fan span{flex:1;position:relative;}
.arch__fan span::after{content:"";position:absolute;top:14px;left:50%;width:1.5px;height:20px;background:var(--line-strong);}

/* ---------- サービスラインナップ ---------- */
.services{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.svc{
  position:relative;display:flex;flex-direction:column;padding:30px 26px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease);
}
.svc::before{content:"";position:absolute;inset:0 0 auto;height:4px;background:var(--c);transform:scaleX(0);transform-origin:left;transition:transform .4s var(--ease);}
.svc:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent;}
.svc:hover::before{transform:scaleX(1);}
/* 解決できる課題を製品名より先に置く（企画書 4-5） */
.svc__msg{font-size:18px;font-weight:800;line-height:1.62;color:var(--navy);margin-bottom:14px;}
.svc__name{
  display:inline-flex;align-items:center;gap:7px;font-size:12.5px;font-weight:800;
  letter-spacing:.03em;color:var(--c);margin-bottom:12px;
}
.svc__name::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--c);flex:none;}
.svc__desc{font-size:14px;color:var(--text-mid);line-height:1.85;margin-bottom:20px;}
.svc__link{margin-top:auto;font-size:13.5px;font-weight:700;color:var(--blue);display:inline-flex;align-items:center;gap:6px;}
.services__more{margin-top:32px;text-align:center;font-size:14.5px;color:var(--text-mid);}
.services__more a{color:var(--blue);font-weight:700;border-bottom:1px solid currentColor;padding-bottom:1px;}

/* ---------- AI機能 ---------- */
.ai{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start;}
.ai__list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;}
.ai__list li{
  position:relative;padding:16px 18px 16px 42px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius);
  font-size:14.5px;font-weight:600;line-height:1.7;
}
.ai__list li::before{
  content:"";position:absolute;left:16px;top:20px;width:16px;height:16px;border-radius:50%;
  background:rgba(23,107,255,.12) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23176BFF' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m5 12 5 5 9-10'/%3E%3C/svg%3E") center/10px no-repeat;
}
.ai__table{width:100%;border-collapse:separate;border-spacing:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;}
.ai__table caption{
  padding:20px 24px 0;text-align:left;font-size:14px;font-weight:800;color:var(--navy);
}
.ai__table thead th{
  font-size:11.5px;font-weight:800;letter-spacing:.12em;color:var(--text-sub);
  text-align:left;padding:16px 24px 10px;
}
.ai__table tbody th,.ai__table tbody td{
  padding:16px 24px;font-size:14.5px;border-top:1px solid var(--line);text-align:left;
}
.ai__table tbody th{font-weight:700;color:var(--navy);width:46%;}
.ai__table tbody td{color:var(--blue);font-weight:700;position:relative;padding-left:44px;}
.ai__table tbody td::before{
  content:"→";position:absolute;left:20px;color:var(--line-strong);font-weight:800;
}

/* ---------- 導入ステップ ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;}
.step{position:relative;padding:28px 22px;background:var(--bg);border-radius:var(--radius);border:1px solid var(--line);}
.step::after{
  content:"";position:absolute;top:50%;right:-10px;width:8px;height:8px;
  border-top:2px solid var(--line-strong);border-right:2px solid var(--line-strong);
  transform:translateY(-50%) rotate(45deg);
}
.step:last-child::after{display:none;}
.step__no{
  display:inline-block;font-size:12px;font-weight:800;letter-spacing:.1em;color:#fff;
  background:var(--blue);padding:3px 10px;border-radius:6px;margin-bottom:14px;
}
.step h3{font-size:17px;font-weight:800;color:var(--navy);margin-bottom:8px;}
.step p{font-size:13.5px;color:var(--text-mid);line-height:1.8;}

/* ---------- 導入事例 ----------
   公開できる事例が未確定のため、index.html 側のセクションは外しています。
   復活させるときにそのまま使えるよう、スタイルは残しています。 */
.cases{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.case{
  display:flex;flex-direction:column;padding:30px 28px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius-lg);
  transition:transform .35s var(--ease),box-shadow .35s var(--ease);
}
.case:hover{transform:translateY(-5px);box-shadow:var(--shadow);}
.case__meta{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px;}
.case__biz,.case__port{font-size:11.5px;font-weight:800;padding:4px 10px;border-radius:6px;letter-spacing:.02em;}
.case__biz{background:rgba(7,26,60,.06);color:var(--navy);}
.case__port{background:rgba(23,107,255,.1);color:var(--blue-dark);}
.case__title{font-size:17px;font-weight:800;line-height:1.65;color:var(--navy);margin-bottom:20px;}
.case__ba{display:grid;gap:14px;padding-top:18px;border-top:1px dashed var(--line-strong);}
.case__ba dt{
  font-size:11.5px;font-weight:800;letter-spacing:.08em;color:var(--text-sub);margin-bottom:2px;
}
.case__ba div:last-child dt{color:var(--blue);}
.case__ba dd{font-size:13.5px;color:var(--text-mid);line-height:1.8;}
.case__num{margin-top:auto;padding-top:20px;font-size:13px;color:var(--text-sub);}
.case__num em{
  display:block;font-style:normal;font-size:20px;font-weight:800;color:var(--blue);
  letter-spacing:-.01em;margin-bottom:2px;
}

/* ---------- セキュリティ ---------- */
.security{background:linear-gradient(140deg,var(--navy),var(--navy-2) 55%,#0A3A8F);position:relative;overflow:hidden;}
.security::after{
  content:"";position:absolute;width:560px;height:560px;right:-160px;top:-200px;border-radius:50%;
  background:radial-gradient(circle,rgba(23,107,255,.35),transparent 70%);
}
.security__inner{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.security__highlight{
  margin-top:30px;padding:24px 26px;border-radius:var(--radius);
  background:rgba(88,214,255,.09);border:1px solid rgba(88,214,255,.28);
}
.security__highlight h3{font-size:15px;font-weight:800;color:var(--cyan);margin-bottom:8px;}
.security__highlight p{font-size:14px;color:rgba(255,255,255,.82);line-height:1.85;}
.security__copy .btn{margin-top:30px;}
.security__list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;}
.security__list li{
  position:relative;padding:18px 20px 18px 46px;border-radius:12px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.13);
  color:#fff;font-size:14.5px;font-weight:600;line-height:1.6;
  transition:background .3s var(--ease),transform .3s var(--ease);
}
.security__list li:hover{background:rgba(255,255,255,.11);transform:translateY(-3px);}
.security__list li::before{
  content:"";position:absolute;left:18px;top:22px;width:16px;height:16px;border-radius:50%;
  background:rgba(88,214,255,.2) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2358D6FF' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m5 12 5 5 9-10'/%3E%3C/svg%3E") center/10px no-repeat;
}

/* ---------- 最終CTA ---------- */
.cta{padding:104px 0;background:var(--bg);}
.cta__inner{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.cta__title{font-size:clamp(25px,3.3vw,40px);font-weight:800;line-height:1.48;letter-spacing:-.02em;color:var(--navy);}
.cta__lead{margin-top:20px;font-size:16px;color:var(--text-mid);}
.cta__points{margin-top:28px;display:grid;gap:11px;}
.cta__points li{position:relative;padding-left:26px;font-size:14.5px;color:var(--text-mid);font-weight:600;}
.cta__points li::before{
  content:"";position:absolute;left:0;top:.55em;width:14px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--blue),var(--cyan));
}

.form{padding:36px 34px;background:#fff;border-radius:var(--radius-lg);border:1px solid var(--line);box-shadow:var(--shadow-lg);}
.form__title{font-size:17px;font-weight:800;color:var(--navy);margin-bottom:24px;padding-bottom:16px;border-bottom:1px solid var(--line);}
.form__field{margin-bottom:18px;}
.form__field label{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--navy);margin-bottom:7px;}
.req{font-size:10.5px;font-weight:800;color:#fff;background:var(--blue);padding:2px 7px;border-radius:4px;letter-spacing:.04em;}
.form__field input,.form__field select,.form__field textarea{
  width:100%;padding:12px 14px;border:1.5px solid var(--line-strong);border-radius:8px;
  background:#fff;font-size:15px;transition:border-color .2s,box-shadow .2s;
}
.form__field textarea{resize:vertical;line-height:1.8;}
.form__field input:focus,.form__field select:focus,.form__field textarea:focus{
  outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(23,107,255,.14);
}
.form__field input[aria-invalid="true"],.form__field select[aria-invalid="true"]{border-color:#D93B3B;}
/* 送信先未接続のあいだ表示する案内 */
.form__pending{
  margin-bottom:24px;padding:18px 20px;border-radius:var(--radius);
  background:rgba(23,107,255,.06);border:1px solid rgba(23,107,255,.22);
}
.form__pendingTitle{font-size:14px;font-weight:800;color:var(--blue-dark);margin-bottom:6px;}
.form__pendingBody{font-size:13px;color:var(--text-mid);line-height:1.8;}
.form__pendingContact{display:inline-block;margin-top:4px;font-weight:700;color:var(--navy);}

/* 無効化中の入力欄 */
[data-form-state="pending"] .form__field{opacity:.5;}
[data-form-state="pending"] input:disabled,
[data-form-state="pending"] select:disabled,
[data-form-state="pending"] textarea:disabled{background:#F2F5FA;cursor:not-allowed;}
[data-form-state="pending"] .btn:disabled{
  background:var(--line-strong);color:#fff;box-shadow:none;cursor:not-allowed;
}
[data-form-state="pending"] .btn:disabled:hover{transform:none;}

.form__msg{min-height:1.5em;margin-top:14px;font-size:13.5px;font-weight:700;}
.form__msg.is-error{color:#C42B2B;}
.form__msg.is-ok{color:#0E7A4B;}
.form__note{margin-top:10px;font-size:12px;color:var(--text-sub);}
.form__note a{color:var(--blue);text-decoration:underline;}

/* ============================================================
   下層ページ共通
   ============================================================ */

/* ---------- ページ見出し ---------- */
.pagehead{
  position:relative;padding:150px 0 66px;background:var(--bg);
  border-bottom:1px solid var(--line);overflow:hidden;
}
/* パンくずが上にある場合、固定ヘッダーの余白はパンくず側が持つ */
.crumb+.pagehead{padding-top:26px;}
.pagehead::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(23,107,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(23,107,255,.05) 1px,transparent 1px);
  background-size:60px 60px;
  mask-image:radial-gradient(ellipse 70% 90% at 80% 0%,#000,transparent 72%);
  -webkit-mask-image:radial-gradient(ellipse 70% 90% at 80% 0%,#000,transparent 72%);
}
.pagehead>.container{position:relative;}
.pagehead__title{font-size:clamp(27px,3.8vw,46px);line-height:1.4;font-weight:800;letter-spacing:-.02em;color:var(--navy);}
.pagehead__lead{margin-top:22px;font-size:17px;color:var(--text-mid);max-width:46em;}
.pagehead__eyebrow{
  display:inline-flex;align-items:center;gap:9px;font-size:12px;font-weight:800;
  letter-spacing:.1em;color:var(--c,var(--blue));background:rgba(23,107,255,.08);
  padding:6px 14px;border-radius:999px;margin-bottom:20px;
}
.pagehead__dot{width:7px;height:7px;border-radius:2px;background:var(--c,var(--blue));}
.pagehead--service .pagehead__title{font-size:clamp(25px,3.4vw,42px);}
.pagehead__name{
  margin-top:18px;font-size:15px;font-weight:800;letter-spacing:.03em;color:var(--c,var(--blue));
}
.pagehead__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}

/* ---------- パンくず ---------- */
.crumb{padding:98px 0 0;background:var(--bg);}
.crumb ol{display:flex;flex-wrap:wrap;gap:8px;font-size:12.5px;color:var(--text-sub);}
.crumb li+li::before{content:"/";margin-right:8px;color:var(--line-strong);}
.crumb a{color:var(--text-sub);}
.crumb a:hover{color:var(--blue);}
.crumb [aria-current]{color:var(--navy);font-weight:700;}

/* ---------- PORT AIとは ---------- */
.vision{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.vision li{padding:30px 28px;border-radius:var(--radius);background:var(--bg);border:1px solid var(--line);}
.vision h3{font-size:18px;font-weight:800;color:var(--navy);margin-bottom:12px;line-height:1.6;}
.vision p{font-size:14.5px;color:var(--text-mid);}

.why{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.why li{padding:26px 22px;background:#fff;border-radius:var(--radius);border:1px solid var(--line);}
.why__no{display:block;font-size:12.5px;font-weight:800;color:var(--blue);opacity:.55;letter-spacing:.1em;margin-bottom:12px;}
.why h3{font-size:16px;font-weight:800;color:var(--navy);margin-bottom:10px;line-height:1.6;}
.why p{font-size:13.5px;color:var(--text-mid);line-height:1.8;}

.elements{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.elements li{
  padding:24px 22px;border-radius:var(--radius);background:#fff;border:1px solid var(--line);
  transition:transform .3s var(--ease),border-color .3s var(--ease);
}
.elements li:hover{transform:translateY(-4px);border-color:var(--blue);}
.elements__label{
  display:inline-block;font-size:19px;font-weight:800;color:var(--navy);margin-bottom:10px;
  padding-bottom:8px;border-bottom:2px solid var(--cyan);
}
.elements p{font-size:13.5px;color:var(--text-mid);line-height:1.8;}

.foundation{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:48px;}
.foundation__item{padding:26px 24px;background:#fff;border-radius:var(--radius);border:1px solid var(--line);}
.foundation__item h3{font-size:17px;font-weight:800;color:var(--navy);margin-bottom:10px;}
.foundation__item p{font-size:13.5px;color:var(--text-mid);line-height:1.8;}

.relation{margin-top:44px;padding:34px 32px;background:#fff;border-radius:var(--radius-lg);border:1px solid var(--line);}
.relation__title{font-size:19px;font-weight:800;color:var(--navy);margin-bottom:8px;}
.relation__lead{font-size:14.5px;color:var(--text-mid);margin-bottom:24px;}
.relation__note{margin-top:22px;font-size:13.5px;color:var(--text-sub);}
.flowchain{display:grid;gap:12px;}
.flowchain li{
  position:relative;display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  padding:18px 22px;border-radius:var(--radius);background:var(--bg);border:1px solid var(--line);
}
.flowchain li+li::before{
  content:"";position:absolute;top:-13px;left:38px;width:1.5px;height:12px;background:var(--line-strong);
}
.flowchain li.is-self{background:rgba(23,107,255,.06);border-color:rgba(23,107,255,.3);}
.flowchain__port{font-size:13.5px;font-weight:800;color:var(--blue-dark);min-width:9.5em;}
.flowchain__act{font-size:14.5px;color:var(--text);}

/* ---------- サービス詳細 ---------- */
.issues{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.issue{padding:30px 26px;background:var(--bg);border-radius:var(--radius);border:1px solid var(--line);}
.issue h3{
  position:relative;padding-left:30px;font-size:17px;font-weight:800;color:var(--navy);
  margin-bottom:12px;line-height:1.6;
}
.issue h3::before{
  content:"";position:absolute;left:0;top:.15em;width:20px;height:20px;border-radius:50%;
  background:rgba(217,59,59,.1) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23D93B3B' stroke-width='3' stroke-linecap='round'%3E%3Cpath d='M12 7v7M12 17.5v.5'/%3E%3C/svg%3E") center/12px no-repeat;
}
.issue p{font-size:14px;color:var(--text-mid);}

.ba{display:grid;grid-template-columns:1fr auto 1fr;gap:24px;align-items:center;}
.ba__col{padding:30px 28px;border-radius:var(--radius-lg);background:#fff;border:1px solid var(--line);}
.ba__col--after{border-color:rgba(23,107,255,.3);box-shadow:0 8px 28px rgba(23,107,255,.1);}
.ba__label{
  display:inline-block;font-size:12px;font-weight:800;letter-spacing:.1em;
  padding:5px 14px;border-radius:6px;margin-bottom:20px;
}
.ba__col--before .ba__label{background:rgba(7,26,60,.07);color:var(--text-mid);}
.ba__col--after .ba__label{background:linear-gradient(100deg,var(--blue),var(--blue-dark));color:#fff;}
.ba__col ol{display:grid;gap:12px;counter-reset:ba;}
.ba__col ol li{
  position:relative;padding-left:32px;font-size:14.5px;line-height:1.75;counter-increment:ba;
}
.ba__col ol li::before{
  content:counter(ba);position:absolute;left:0;top:.15em;width:22px;height:22px;border-radius:50%;
  display:grid;place-items:center;font-size:11.5px;font-weight:800;
}
.ba__col--before ol li{color:var(--text-mid);}
.ba__col--before ol li::before{background:rgba(7,26,60,.07);color:var(--text-sub);}
.ba__col--after ol li{color:var(--text);font-weight:600;}
.ba__col--after ol li::before{background:rgba(23,107,255,.12);color:var(--blue);}
.ba__arrow{font-size:26px;color:var(--line-strong);font-weight:800;}

.feats{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.feat{padding:26px 24px;background:#fff;border-radius:var(--radius);border:1px solid var(--line);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);}
.feat:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm);}
.feat h3{
  position:relative;padding-left:26px;font-size:16.5px;font-weight:800;color:var(--navy);margin-bottom:10px;
}
.feat h3::before{
  content:"";position:absolute;left:0;top:.5em;width:14px;height:3px;border-radius:2px;
  background:linear-gradient(90deg,var(--blue),var(--cyan));
}
.feat p{font-size:14px;color:var(--text-mid);}

.ai__table--wide{max-width:860px;}
.secgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;}
.secgrid li{
  position:relative;padding:18px 20px 18px 48px;background:#fff;border-radius:var(--radius);
  border:1px solid var(--line);font-size:14.5px;font-weight:600;line-height:1.6;
}
.secgrid li::before{
  content:"";position:absolute;left:18px;top:20px;width:18px;height:18px;border-radius:50%;
  background:rgba(23,107,255,.12) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23176BFF' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 3 5 6v5c0 4.4 2.9 7.4 7 8.4 4.1-1 7-4 7-8.4V6l-7-3Z'/%3E%3C/svg%3E") center/11px no-repeat;
}

.services--2{grid-template-columns:repeat(2,1fr);}
.services--3{grid-template-columns:repeat(3,1fr);}
.related{margin-top:32px;}
.related .svc{padding:24px 22px;}
.related .svc__msg{font-size:16px;}

/* ---------- 課題から選ぶ ---------- */
.finder{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;}
.finder a{
  display:flex;flex-direction:column;gap:8px;height:100%;padding:22px 20px;
  background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);
  transition:transform .3s var(--ease),border-color .3s var(--ease),background .3s var(--ease);
}
.finder a:hover{transform:translateY(-4px);border-color:var(--blue);background:#fff;}
.finder span{font-size:15px;font-weight:700;color:var(--navy);}
.finder em{font-style:normal;font-size:12.5px;font-weight:800;color:var(--blue);}

/* ---------- FAQページ ---------- */
.faqgroup{margin-bottom:48px;}
.faqgroup__title{
  font-size:19px;font-weight:800;color:var(--navy);margin-bottom:18px;
  padding-left:14px;border-left:4px solid var(--blue);
}
.faqgroup__contact{font-size:14.5px;color:var(--text-mid);text-align:center;}
.faqgroup__contact a,.faq__body a{color:var(--blue);font-weight:700;border-bottom:1px solid currentColor;}

/* ---------- お役立ち情報 ---------- */
.reslist{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.rescard{
  position:relative;padding:32px 30px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.rescard:hover{transform:translateY(-5px);box-shadow:var(--shadow);}
.rescard__label{font-size:11.5px;font-weight:800;letter-spacing:.16em;color:var(--blue);margin-bottom:12px;}
.rescard h2{font-size:22px;font-weight:800;margin-bottom:12px;}
.rescard h2 a{color:var(--navy);}
.rescard h2 a:hover{color:var(--blue);}
.rescard__desc{font-size:14.5px;color:var(--text-mid);}
.rescard__state{
  display:inline-block;margin-top:18px;font-size:11.5px;font-weight:800;
  padding:4px 12px;border-radius:6px;background:rgba(7,26,60,.06);color:var(--text-sub);
}
.rescard__state--open{background:rgba(23,107,255,.1);color:var(--blue-dark);}

/* ---------- お問い合わせ ---------- */
.contactflow{display:grid;gap:16px;margin:26px 0 34px;}
.contactflow li{display:flex;gap:16px;align-items:flex-start;}
.contactflow span{
  flex:none;width:32px;height:32px;border-radius:50%;display:grid;place-items:center;
  font-size:14px;font-weight:800;color:#fff;background:linear-gradient(100deg,var(--blue),var(--blue-dark));
}
.contactflow h3{font-size:16px;font-weight:800;color:var(--navy);margin-bottom:4px;}
.contactflow p{font-size:14px;color:var(--text-mid);}
.contactnote{padding:24px 26px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);}
.contactnote h3{font-size:14px;font-weight:800;color:var(--navy);margin-bottom:12px;}
.contactnote ul{display:grid;gap:9px;}
.contactnote li{position:relative;padding-left:22px;font-size:14px;color:var(--text-mid);}
.contactnote li::before{
  content:"";position:absolute;left:0;top:.6em;width:12px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--blue),var(--cyan));
}

/* ---------- 準備中ページ ---------- */
.pending{padding-top:150px;}
.crumb+.pending{padding-top:30px;}
.pending__inner{
  padding:52px 48px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);box-shadow:var(--shadow);
}
.pending__title{font-size:clamp(24px,3.2vw,34px);font-weight:800;color:var(--navy);line-height:1.45;margin-bottom:18px;}
.pending__lead{font-size:16px;color:var(--text-mid);}
.pending__outline{
  margin-top:32px;padding:26px 28px;background:var(--bg);border-radius:var(--radius);
  border:1px solid var(--line);
}
.pending__outline h2{font-size:14px;font-weight:800;color:var(--navy);margin-bottom:14px;}
.pending__outline ul{display:grid;gap:9px;}
.pending__outline li{position:relative;padding-left:22px;font-size:14.5px;color:var(--text-mid);}
.pending__outline li::before{
  content:"";position:absolute;left:0;top:.6em;width:12px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--blue),var(--cyan));
}
.pending__note{margin-top:20px;font-size:13px;color:var(--text-sub);}
.pending__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}

/* ---------- 下層ページのCTA帯 ---------- */
.ctaband{
  padding:88px 0;text-align:center;position:relative;overflow:hidden;
  background:linear-gradient(135deg,var(--navy),var(--blue-dark) 70%,var(--blue));
}
.ctaband::before{
  content:"";position:absolute;inset:0;opacity:.3;
  background-image:radial-gradient(circle at 15% 20%,rgba(255,255,255,.26),transparent 45%),
                   radial-gradient(circle at 85% 75%,rgba(88,214,255,.3),transparent 45%);
}
.ctaband__inner{position:relative;}
.ctaband__title{font-size:clamp(23px,3vw,34px);font-weight:800;color:#fff;line-height:1.5;letter-spacing:-.02em;}
.ctaband__lead{margin:18px auto 30px;max-width:640px;font-size:16px;color:rgba(255,255,255,.82);}
.ctaband__actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}
.ctaband .btn--primary{background:#fff;color:var(--blue-dark);box-shadow:0 10px 26px rgba(0,0,0,.2);}
.ctaband .btn--outline{background:transparent;border-color:rgba(255,255,255,.5);color:#fff;}
.ctaband .btn--outline:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff;}

/* ---------- 404ページ ---------- */
.notfound{
  display:grid;place-items:center;min-height:70vh;padding:150px 0 100px;
  background:var(--bg);text-align:center;
}
.notfound__code{
  font-size:clamp(64px,10vw,120px);font-weight:800;line-height:1;letter-spacing:-.04em;
  background:linear-gradient(120deg,var(--blue),var(--cyan));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.notfound__title{font-size:clamp(22px,3vw,32px);font-weight:800;color:var(--navy);margin:20px 0 18px;}
.notfound__lead{font-size:16px;color:var(--text-mid);margin-bottom:36px;}
.notfound__actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}

/* ---------- フッター ---------- */
.footer{background:var(--navy);color:rgba(255,255,255,.68);padding:70px 0 26px;}
.footer__inner{display:grid;grid-template-columns:1fr 2fr;gap:48px;padding-bottom:44px;}
.footer__brand img{width:164px;height:auto;background:#fff;padding:10px 14px;border-radius:10px;}
.footer__tagline{margin-top:20px;font-size:11px;font-weight:800;letter-spacing:.18em;color:var(--cyan);}
.footer__desc{margin-top:8px;font-size:13.5px;line-height:1.9;}
.footer__nav{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;}
.footer__nav h3{font-size:12.5px;font-weight:800;color:#fff;letter-spacing:.08em;margin-bottom:16px;}
.footer__nav ul{display:grid;gap:11px;}
.footer__nav a{font-size:13.5px;transition:color .2s;}
.footer__nav a:hover{color:var(--cyan);}
.footer__bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;padding-top:24px;border-top:1px solid rgba(255,255,255,.13);font-size:12.5px;}
.footer__bottom ul{display:flex;flex-wrap:wrap;gap:22px;}
.footer__bottom a:hover{color:var(--cyan);}

/* ============================================================
   レスポンシブ
   ============================================================ */
@media (max-width:1080px){
  .vision,.issues,.feats,.secgrid,.services--3{grid-template-columns:repeat(2,1fr);}
  .why,.elements,.foundation,.finder{grid-template-columns:repeat(2,1fr);}
  .services{grid-template-columns:repeat(2,1fr);}
  .cases{grid-template-columns:1fr;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .step::after{display:none;}
  .arch__row--apps{grid-template-columns:repeat(3,1fr);}
  .arch__fan{display:none;}
  .arch__row--apps{margin-top:8px;}
}

@media (max-width:960px){
  .hero{padding:132px 0 72px;}
  .hero__inner{grid-template-columns:1fr;gap:40px;text-align:center;}
  .hero__visual{order:-1;}
  .network{width:min(400px,86%);}
  .tagline{justify-content:center;}
  .hero__actions{justify-content:center;}
  .ai{grid-template-columns:1fr;}
  .security__inner{grid-template-columns:1fr;gap:40px;}
  .cta__inner{grid-template-columns:1fr;gap:40px;}
  .footer__inner{grid-template-columns:1fr;gap:36px;}
  .pc{display:none;}
}

@media (max-width:820px){
  .nav{
    position:fixed;inset:0 0 0 auto;width:min(320px,86vw);
    flex-direction:column;align-items:stretch;justify-content:center;gap:32px;
    background:#fff;padding:32px;box-shadow:-10px 0 40px rgba(7,26,60,.16);
    transform:translateX(100%);transition:transform .35s var(--ease);overflow-y:auto;
  }
  .nav.is-open{transform:none;}
  .nav__list{flex-direction:column;gap:22px;font-size:17px;}
  .nav__cta{flex-direction:column;align-items:stretch;}
  .nav__cta .btn{width:100%;}
  .nav-toggle{display:block;z-index:2;}
  body.is-locked{overflow:hidden;}

  .container{width:min(100% - 32px,var(--container));}
  .section,.cta{padding:76px 0;}
  .section__head{margin-bottom:40px;}
  .sp{display:block;}
  .services{grid-template-columns:1fr;}

  /* 下層ページ */
  .pagehead{padding:120px 0 52px;}
  .crumb{padding-top:86px;}
  .crumb+.pagehead{padding-top:20px;}
  .vision,.why,.elements,.foundation,.issues,.feats,.secgrid,
  .finder,.reslist,.services--2,.services--3{grid-template-columns:1fr;}
  .ba{grid-template-columns:1fr;gap:14px;}
  .ba__arrow{transform:rotate(90deg);justify-self:center;}
  .relation{padding:26px 20px;}
  .flowchain li{gap:6px;}
  .flowchain__port{min-width:0;}
  .pending{padding-top:120px;}
  .crumb+.pending{padding-top:22px;}
  .pending__inner{padding:34px 24px;}
  .ctaband{padding:66px 0;}
  .steps{grid-template-columns:1fr;}
  .ai__list{grid-template-columns:1fr;}
  .security__list{grid-template-columns:1fr;}
  .footer__nav{grid-template-columns:repeat(2,1fr);}
}

@media (max-width:560px){
  .arch{padding:30px 18px;}
  .arch__row--core,.arch__row--apps{grid-template-columns:1fr;}
  .form{padding:28px 22px;}
  .ai__table tbody th{width:44%;}
  .ai__table caption,.ai__table thead th,.ai__table tbody th,.ai__table tbody td{padding-inline:18px;}
  .ai__table tbody td{padding-left:38px;}
  .ai__table tbody td::before{left:16px;}
  .footer__bottom{flex-direction:column;}
}

/* 過度なモーションを避ける（企画書 8） */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
  [data-reveal]{opacity:1;transform:none;}
  .network__shield{animation:none;}
}