html, body { margin:0; padding:0; }
  body { background:#FFFFFF; }

  .sn-lp {
    --sn-white:#FFFFFF;
    --sn-paper:#F7FAFD;
    --sn-sky:#EAF3FC;
    --sn-sky-2:#DCEBFA;
    --sn-sky-3:#CFE4F7;
    --sn-blue:#1C8FCB;
    --sn-blue-deep:#0F6FA3;
    --sn-navy:#122A44;
    --sn-ink:#1F2D3D;
    --sn-sub:#5B6B7C;
    --sn-line:#DCE7F2;
    --sn-coral:#FF7A59;
    font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic","Noto Sans JP",Meiryo,sans-serif;
    color:var(--sn-ink);
    background:var(--sn-white);
    line-height:1.85;
    font-size:16px;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
    box-sizing:border-box;
    font-feature-settings:"palt";
  }
  .sn-lp *, .sn-lp *::before, .sn-lp *::after { box-sizing:inherit; }
  .sn-lp img { max-width:100%; display:block; }
  .sn-lp a { text-decoration:none; color:inherit; }
  .sn-lp ul { margin:0; padding:0; list-style:none; }
  .sn-lp button { font-family:inherit; }

  .sn-inner { max-width:1120px; margin:0 auto; padding:0 24px; }
  .sn-inner--narrow{ max-width:720px; }
  .sn-lp section { padding:132px 0; position:relative; }
  @media (max-width:900px){ .sn-lp section{ padding:88px 0; } }

  .sn-eyebrow{
    display:block; font-size:12px; font-weight:700; letter-spacing:.2em;
    color:var(--sn-blue); margin-bottom:20px; text-transform:uppercase;
  }
  .sn-lp h2{
    font-size:clamp(23px,3.6vw,33px); font-weight:700; line-height:1.6;
    margin:0 0 22px; letter-spacing:.01em; color:var(--sn-navy);
  }
  .sn-center{ text-align:center; }
  .sn-lead{ font-size:16px; color:var(--sn-sub); max-width:600px; margin:0 auto 20px; }
  .sn-lead.sn-left{ margin-left:0; }

  .sn-callout{
    font-size:clamp(19px,2.6vw,24px); font-weight:700; color:var(--sn-navy);
    text-align:center; margin:44px auto 12px; max-width:640px; line-height:1.8;
  }

  /* ---------- buttons ---------- */
  .sn-btn{
    display:inline-flex; align-items:center; justify-content:center; gap:8px;
    padding:16px 32px; border-radius:4px; font-weight:700; font-size:14.5px;
    letter-spacing:.02em; transition:opacity .15s ease, background .15s ease, border-color .15s ease;
    white-space:nowrap;
  }
  .sn-btn-primary{ background:var(--sn-blue); color:#fff; }
  .sn-btn-primary:hover{ background:var(--sn-blue-deep); }
  .sn-btn-accent::before{ content:""; display:inline-block; width:6px; height:6px; border-radius:50%; background:var(--sn-coral); flex:0 0 auto; }
  .sn-btn-ghost{ background:transparent; color:var(--sn-navy); border:1px solid var(--sn-line); }
  .sn-btn-ghost:hover{ border-color:var(--sn-blue); color:var(--sn-blue); }
  .sn-cta-row{ display:flex; gap:14px; flex-wrap:wrap; }
  .sn-cta-row.sn-center{ justify-content:center; }

  /* ---------- header ---------- */
  .sn-header{
    position:sticky; top:0; z-index:50; background:rgba(255,255,255,.88);
    backdrop-filter:saturate(150%) blur(8px); border-bottom:1px solid var(--sn-line);
  }
  .sn-header-inner{
    max-width:1120px; margin:0 auto; padding:18px 24px;
    display:grid; grid-template-columns:1fr auto 1fr; align-items:center; gap:12px;
  }
  .sn-header-left{ font-size:17px; font-weight:800; color:var(--sn-navy); letter-spacing:.03em; justify-self:start; }
  .sn-header-left sup{ font-size:10px; color:var(--sn-sub); font-weight:500; }
  .sn-header-center{ justify-self:center; }
  .sn-header-right{ justify-self:end; }
  .sn-header-right .sn-btn{ padding:10px 22px; font-size:13px; }
  @media (max-width:560px){
    .sn-header-inner{ grid-template-columns:auto auto; justify-content:space-between; }
    .sn-header-center{ display:none; }
    .sn-header-left{ font-size:16px; }
    .sn-header-right .sn-btn{ padding:9px 16px; font-size:12.5px; }
  }

  /* ---------- inline flow ---------- */
  .sn-flow{ display:flex; align-items:center; flex-wrap:wrap; gap:8px 4px; }
  .sn-flow-step{ font-weight:700; font-size:14.5px; color:var(--sn-navy); white-space:nowrap; padding:4px 2px; }
  .sn-flow-arrow{ color:var(--sn-line); font-size:14px; margin:0 6px; }
  @media (max-width:640px){ .sn-flow{ flex-direction:column; align-items:flex-start; gap:10px; } .sn-flow-arrow{ transform:rotate(90deg); margin-left:2px; } }

  /* ---------- split (image + text) layout system ---------- */
  .sn-split{ display:grid; grid-template-columns:1fr 1fr; gap:64px; align-items:center; }
  .sn-split--reverse{ direction:rtl; }
  .sn-split--reverse > *{ direction:ltr; }
  @media (max-width:900px){
    .sn-split{ grid-template-columns:1fr; gap:36px; direction:ltr; }
    .sn-split--reverse{ direction:ltr; }
  }

  /* ---------- image placeholder box ---------- */
  .sn-imgbox{
    position:relative; border-radius:20px; overflow:hidden;
    background:linear-gradient(135deg,var(--sn-sky) 0%, var(--sn-sky-2) 55%, var(--sn-sky-3) 100%);
    aspect-ratio: var(--ratio, 4 / 3);
    display:flex; align-items:center; justify-content:center;
  }
  .sn-imgbox img{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; z-index:2; }
  .sn-imgbox-fallback{ position:relative; z-index:1; width:100%; height:100%; display:flex; align-items:center; justify-content:center; padding:6%; }
  .sn-imgbox-fallback svg{ width:100%; height:100%; overflow:visible; }
  .sn-imgbox-tag{
    position:absolute; left:16px; bottom:16px; z-index:3; font-size:10px; font-weight:700; letter-spacing:.08em;
    color:var(--sn-blue-deep); background:rgba(255,255,255,.78); padding:5px 11px; border-radius:999px;
  }

  /* ==================== FV ==================== */
  .sn-fv{ background:linear-gradient(180deg,#FFFFFF 0%, var(--sn-paper) 100%); padding-top:64px; }
  .sn-fv .sn-split{ align-items:center; }
  .sn-fv h1{
    font-size:clamp(27px,3.6vw,40px); font-weight:800; line-height:1.65; margin:0 0 26px;
    letter-spacing:.01em; color:var(--sn-navy);
  }
  .sn-fv-sub{ font-size:15.5px; color:var(--sn-sub); margin:0 0 12px; line-height:2.05; }
  .sn-fv-note{ font-size:13.5px; font-weight:700; color:var(--sn-blue-deep); margin:14px 0 34px; }
  .sn-fv .sn-cta-row{ margin-top:6px; }
  .sn-fv-visual{ --ratio:3/2; }

  /* ==================== 問題提起 ==================== */
  .sn-problem{ background:var(--sn-white); }
  .sn-problem-visual{ --ratio:3/2; }
  .sn-fade-axis-mini{ margin-top:12px; }

  /* ==================== だから問いを置く ==================== */
  .sn-gap{ background:var(--sn-paper); }
  .sn-gap-visual{ --ratio:3/2; }
  .sn-gap-flow{ margin:30px 0 22px; }
  .sn-gap-note{ font-size:14px; color:var(--sn-sub); border-top:1px solid var(--sn-line); padding-top:22px; margin-top:6px; }

  /* ==================== about ==================== */
  .sn-about{ background:var(--sn-white); }
  .sn-about-inner{ max-width:660px; margin:0 auto; text-align:center; }
  .sn-about p{ font-size:16.5px; color:var(--sn-ink); margin:0 0 18px; }
  .sn-about-tagline{
    font-weight:700; color:var(--sn-navy); font-size:18px; margin-top:30px !important;
    padding-top:26px; border-top:1px solid var(--sn-line);
  }

  /* ==================== 特徴（編集的レイアウト） ==================== */
  .sn-features{ background:var(--sn-paper); }
  .sn-feat-groups{ margin-top:20px; }
  .sn-feat-group{
    display:grid; grid-template-columns:110px 1fr; gap:28px; align-items:start;
    padding:38px 0; border-top:1px solid var(--sn-line);
  }
  .sn-feat-group:last-child{ border-bottom:1px solid var(--sn-line); }
  .sn-feat-group-num{ font-size:40px; font-weight:200; color:var(--sn-sky-3); line-height:1; font-variant-numeric:tabular-nums; }
  .sn-feat-group-body{ max-width:600px; }
  .sn-feat-group-title{ font-size:18.5px; font-weight:700; color:var(--sn-navy); margin-bottom:12px; line-height:1.6; }
  .sn-feat-group-sub{ font-size:14.5px; color:var(--sn-sub); }
  .sn-feat-group-sub b{ color:var(--sn-coral); font-weight:700; }
  @media (max-width:600px){ .sn-feat-group{ grid-template-columns:1fr; gap:8px; } .sn-feat-group-num{ font-size:30px; } }

  /* ==================== 点から線へ（大型ビジュアルセクション） ==================== */
  .sn-line-sec{ background:var(--sn-white); }
  .sn-axis-panel{ margin-top:52px; aspect-ratio:auto; height:auto; display:block; padding:56px 5%; background:linear-gradient(135deg,var(--sn-sky) 0%, var(--sn-sky-2) 60%, var(--sn-sky-3) 100%); border-radius:24px; }
  .sn-axis-panel .sn-imgbox-fallback{ height:auto; width:100%; display:block; padding:0; }
  .sn-axis-panel svg{ width:100%; height:auto; display:block; }

  /* ==================== タイミング ==================== */
  .sn-timing{ background:var(--sn-paper); }
  .sn-tline{ display:flex; align-items:flex-start; margin-top:52px; gap:0; }
  .sn-tline-node{ flex:1; text-align:center; position:relative; }
  .sn-tline-node::before{ content:""; position:absolute; top:5px; left:0; width:100%; height:1px; background:var(--sn-line); z-index:0; }
  .sn-tline-node:first-child::before{ left:50%; width:50%; }
  .sn-tline-node:last-child::before{ width:50%; }
  .sn-tline-dot{ width:9px; height:9px; border-radius:50%; background:var(--sn-navy); margin:0 auto 18px; position:relative; z-index:1; }
  .sn-tline-node:nth-child(4) .sn-tline-dot{ background:var(--sn-blue); width:11px; height:11px; }
  .sn-tline-time{ font-weight:700; font-size:14px; color:var(--sn-navy); margin-bottom:8px; }
  .sn-tline-q{ font-size:12.5px; color:var(--sn-sub); line-height:1.7; padding:0 6px; }
  @media (max-width:700px){
    .sn-tline{ flex-direction:column; gap:26px; }
    .sn-tline-node::before, .sn-tline-node:first-child::before, .sn-tline-node:last-child::before{ display:none; }
  }
  .sn-note-box{ margin-top:36px; font-size:13.5px; color:var(--sn-sub); text-align:center; border-top:1px dashed var(--sn-line); border-bottom:1px dashed var(--sn-line); padding:20px 0; }
  .sn-timing .sn-callout{ margin-top:40px; }

  /* ==================== 3つの届け方（ハブ＆ブランチ） ==================== */
  .sn-delivery{ background:var(--sn-white); }
  .sn-hub{ margin-top:56px; }
  .sn-hub svg{ width:100%; height:auto; display:block; }
  .sn-hub-list{ display:grid; grid-template-columns:repeat(3,1fr); gap:36px; margin-top:44px; }
  @media (max-width:820px){ .sn-hub-list{ grid-template-columns:1fr; gap:28px; } }
  .sn-hub-item{ text-align:center; }
  .sn-hub-item-kicker{ font-size:12px; color:var(--sn-sub); font-weight:600; margin-bottom:6px; }
  .sn-hub-item-name{ font-size:18px; font-weight:800; color:var(--sn-navy); margin-bottom:4px; }
  .sn-hub-item-catch{ font-weight:600; color:var(--sn-blue-deep); font-size:13.5px; margin-bottom:12px; }
  .sn-hub-item-text{ font-size:13.5px; color:var(--sn-sub); }

  /* ==================== 利用イメージ ==================== */
  .sn-usage{ background:var(--sn-paper); }
  .sn-usage-visual{ --ratio:3/2; }
  .sn-steps{ }
  .sn-step{ display:grid; grid-template-columns:56px 1fr; gap:18px; padding:20px 0; border-bottom:1px solid var(--sn-line); }
  .sn-step:last-child{ border-bottom:none; }
  .sn-step-num{ font-size:13px; font-weight:700; color:var(--sn-sub); letter-spacing:.03em; padding-top:2px; }
  .sn-step-title{ font-weight:700; font-size:16px; color:var(--sn-navy); margin-bottom:6px; }
  .sn-step-text{ font-size:14px; color:var(--sn-sub); }

  /* laptop mock (used as fallback art inside usage imgbox) */
  .sn-laptop{ width:78%; max-width:300px; }
  .sn-laptop-frame{ background:var(--sn-navy); border-radius:8px 8px 0 0; padding:10px 10px 0; }
  .sn-laptop-screen{ background:#fff; border-radius:4px 4px 0 0; padding:16px 15px; min-height:170px; }
  .sn-laptop-dot-row{ display:flex; gap:5px; margin-bottom:12px; }
  .sn-laptop-dot{ width:6px; height:6px; border-radius:50%; background:var(--sn-line); }
  .sn-laptop-q{ font-size:12px; font-weight:700; color:var(--sn-navy); line-height:1.7; margin-bottom:12px; }
  .sn-laptop-choice{ display:block; width:100%; text-align:left; padding:8px 10px; border-radius:3px; border:1px solid var(--sn-line); font-size:11px; color:var(--sn-ink); margin-bottom:6px; }
  .sn-laptop-choice.is-active{ border-color:var(--sn-blue); color:var(--sn-blue-deep); font-weight:700; }
  .sn-laptop-base{ height:12px; background:#1a3554; border-radius:0 0 7px 7px; position:relative; }
  .sn-laptop-base::after{ content:""; position:absolute; left:50%; top:0; transform:translateX(-50%); width:46px; height:4px; background:#254568; border-radius:0 0 4px 4px; }

  /* ==================== audience ==================== */
  .sn-audience{ background:var(--sn-white); }
  .sn-aud-block{ display:grid; grid-template-columns:.9fr 1.1fr; gap:48px; align-items:start; padding:44px 0; border-top:1px solid var(--sn-line); }
  .sn-audience .sn-inner > .sn-aud-block:last-child{ border-bottom:1px solid var(--sn-line); }
  @media (max-width:820px){ .sn-aud-block{ grid-template-columns:1fr; gap:18px; } }
  .sn-aud-tag{ font-size:12px; font-weight:700; color:var(--sn-blue); letter-spacing:.1em; margin-bottom:14px; text-transform:uppercase; }
  .sn-aud-title{ font-size:19px; font-weight:700; color:var(--sn-navy); line-height:1.7; margin-bottom:14px; }
  .sn-aud-desc{ font-size:14.5px; color:var(--sn-sub); margin-bottom:0; }
  .sn-aud-list li{ position:relative; padding-left:18px; font-size:14.5px; color:var(--sn-ink); margin-bottom:12px; }
  .sn-aud-list li::before{ content:"—"; position:absolute; left:0; top:0; color:var(--sn-sky-3); font-weight:700; }

  /* ==================== story ==================== */
  .sn-story{ background:var(--sn-paper); }
  .sn-story-visual{ --ratio:2/1; margin-bottom:56px; }
  .sn-story-track{ }
  .sn-story-item{ display:grid; grid-template-columns:96px 1fr; gap:24px; padding:20px 0; border-left:1px solid var(--sn-line); position:relative; padding-left:28px; margin-left:4px; }
  .sn-story-item::before{ content:""; position:absolute; left:-3.5px; top:26px; width:6px; height:6px; border-radius:50%; background:var(--sn-blue); }
  .sn-story-day{ font-weight:700; color:var(--sn-navy); font-size:14px; padding-top:2px; }
  .sn-story-quote{ font-size:14.5px; color:var(--sn-ink); }
  .sn-story-note{ margin-top:30px; font-size:13px; color:var(--sn-sub); text-align:center; }

  /* ==================== 導入までの流れ【2026-10-24 追加】 ==================== */
  /* PC：4枚を横一列（左→右で順番が読める）／タブレット：2×2／スマホ：縦1列 */
  .sn-intro-flow{ background:var(--sn-white); border-bottom:1px solid var(--sn-line); }
  .sn-intro-flow .sn-lead{ max-width:680px; }  /* PCで1行に収める */
  .sn-lp .sn-iflow-list{
    list-style:none; margin:44px 0 0; padding:0;
    display:grid; grid-template-columns:repeat(4,1fr); gap:20px;
    counter-reset:none;
  }
  .sn-iflow-card{
    position:relative; margin:0;
    background:var(--sn-paper); border:1px solid var(--sn-line); border-radius:12px;
    padding:28px 24px 26px;
  }
  /* カード間の矢印（横並びのときだけ表示） */
  .sn-iflow-card:not(:last-child)::after{
    content:""; position:absolute; top:50%; right:-15px; z-index:1;
    width:10px; height:10px; margin-top:-5px;
    border-top:2px solid var(--sn-blue); border-right:2px solid var(--sn-blue); opacity:.45;
    transform:rotate(45deg);
  }
  .sn-iflow-step{
    display:block; font-size:12px; font-weight:700; letter-spacing:.14em;
    color:var(--sn-blue); margin-bottom:12px;
  }
  .sn-lp .sn-iflow-title{
    font-size:16.5px; font-weight:700; line-height:1.55; color:var(--sn-navy);
    margin:0 0 10px;
  }
  .sn-iflow-text{ font-size:14px; line-height:1.8; color:var(--sn-sub); margin:0; }
  @media (max-width:1000px){
    .sn-lp .sn-iflow-list{ grid-template-columns:repeat(2,1fr); }
    .sn-iflow-card:not(:last-child)::after{ display:none; }
  }
  @media (max-width:600px){
    .sn-lp .sn-iflow-list{ grid-template-columns:1fr; gap:12px; margin-top:32px; }
    .sn-iflow-card{ padding:22px 20px 20px; }
  }

  /* ==================== FAQ ==================== */
  .sn-faq{ background:var(--sn-white); }
  .sn-faq-list{ margin-top:26px; max-width:760px; margin-left:auto; margin-right:auto; }
  .sn-faq-item{ border-bottom:1px solid var(--sn-line); }
  .sn-faq-item:first-child{ border-top:1px solid var(--sn-line); }
  .sn-faq-item summary{ cursor:pointer; list-style:none; padding:20px 40px 20px 0; font-weight:600; color:var(--sn-navy); position:relative; font-size:15px; }
  .sn-faq-item summary::-webkit-details-marker{ display:none; }
  .sn-faq-item summary::after{ content:"+"; position:absolute; right:2px; top:50%; transform:translateY(-50%); font-size:20px; color:var(--sn-blue); font-weight:300; }
  .sn-faq-item[open] summary::after{ content:"−"; }
  .sn-faq-a{ padding:0 40px 22px 0; font-size:14.5px; color:var(--sn-sub); }
  .sn-faq-q-mark{ color:var(--sn-blue); font-weight:700; margin-right:6px; }

  /* ==================== CTA ==================== */
  .sn-cta{ background:linear-gradient(135deg,var(--sn-blue) 0%, var(--sn-blue-deep) 100%); color:#fff; text-align:center; }
  .sn-cta .sn-eyebrow{ color:#DCF0FF; }
  .sn-cta h2{ color:#fff; }
  .sn-cta .sn-lead{ color:#DCEEFB; }
  .sn-cta .sn-btn-ghost{ color:#fff; border-color:rgba(255,255,255,.4); }
  .sn-cta .sn-btn-ghost:hover{ border-color:#fff; color:#fff; }

  /* ==================== footer ==================== */
  .sn-footer{ background:var(--sn-navy); color:#B7C8DA; padding:34px 0; }
  .sn-footer-inner{ max-width:1120px; margin:0 auto; padding:0 24px; display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:12px; }
  .sn-footer-left{ font-size:12.5px; }
  .sn-footer-right{ display:flex; gap:24px; flex-wrap:wrap; font-size:13px; font-weight:500; }
  .sn-footer-right a{ color:#DCE6F0; }
  .sn-footer-right a:hover{ text-decoration:underline; }
  .sn-brand-toi .sn-nudge{ color:#7FC4EE; }
  @media (max-width:560px){ .sn-footer-inner{ flex-direction:column; align-items:flex-start; } }