/* =========================================================
   トップページ「白い紙のエディトリアル」（案Bベースの完成版）
   ・すべて .top-b の内側に限定（共通ヘッダー・フッターに影響させない）
   ・CSSで初期非表示にする指定は置かない（JS無効・reduced-motion でも全要素が見える）
   ========================================================= */
.top-b{
  --blue:#479CD9;
  --deep:#1E5F8C;
  --ink:#10161b;
  --muted:#4b5a63;
  --line:#cddce8;
  --paper:#f8fbfd;
  --rule:rgba(16,22,27,.9);
  --hair:rgba(16,22,27,.16);
  --sky:#a9d6f5;
  --en:'Barlow Condensed','Noto Sans JP',sans-serif;
  --ja:'Noto Sans JP',sans-serif;
  --hh:74px;
  display:block;margin:0;
  font-family:var(--ja);font-size:16px;font-weight:400;line-height:1.85;letter-spacing:normal;
  color:var(--ink);background:#fff;
  overflow-x:clip;
  -webkit-font-smoothing:antialiased;
}
.top-b,.top-b *,.top-b *::before,.top-b *::after{box-sizing:border-box}
.top-b :where(h1,h2,h3,h4,p,ul,ol,li,figure,figcaption,blockquote){margin:0}
/* site.css の h1〜h4（色・書体・字間）を打ち消す */
.top-b h1,.top-b h2,.top-b h3,.top-b h4{color:inherit;font-family:inherit;font-weight:900;letter-spacing:normal}
.top-b ul,.top-b ol{padding:0;list-style:none}
.top-b a{color:inherit}
.top-b svg{display:block}
.top-b img{max-width:100%}
.top-b img.is-missing{visibility:hidden}
.top-b .tb-wrap{width:min(1200px, 100% - 48px);margin-inline:auto}
.top-b .tb-kp{word-break:keep-all;overflow-wrap:anywhere}
@supports (word-break:auto-phrase){ .top-b .tb-ap{word-break:auto-phrase} }
.top-b .tb-ln{display:block;overflow:hidden;padding-bottom:.08em;margin-bottom:-.08em}
.top-b .tb-ln-in{display:block}

/* ---------- Buttons ---------- */
.top-b .tb-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:12px;
  min-height:58px;padding:14px 28px;border-radius:999px;
  font-weight:700;font-size:16px;line-height:1.4;text-decoration:none;text-align:center;
  transition:transform .2s, box-shadow .2s, background-color .2s, color .2s;
}
.top-b .tb-btn .tb-arr{display:inline-block;font-family:var(--en);font-weight:800;font-size:1.15em;line-height:1;transition:transform .2s}
.top-b .tb-btn:hover .tb-arr{transform:translateX(4px)}
.top-b .tb-btn svg{flex:0 0 auto;width:20px;height:20px}
.top-b .tb-btn--deep{background:var(--deep);color:#fff;box-shadow:0 12px 26px -14px rgba(30,95,140,.8)}
.top-b .tb-btn--deep:hover{background:#174e75;transform:translateY(-2px)}
.top-b .tb-btn--outline{border:1.5px solid var(--ink);color:var(--ink);background:#fff;font-size:15px}
.top-b .tb-btn--outline:hover{background:var(--paper)}
.top-b .tb-btn--white{background:#fff;color:var(--deep);box-shadow:0 10px 30px rgba(8,28,46,.25)}
.top-b .tb-btn--white:hover{transform:translateY(-2px)}
.top-b .tb-btn--line{border:1.5px solid rgba(255,255,255,.9);color:#fff;font-size:15px;background:rgba(16,40,60,.2)}
.top-b .tb-btn--line:hover{background:rgba(255,255,255,.14)}
.top-b .tb-btn:focus-visible{outline:3px solid var(--blue);outline-offset:3px}

/* ---------- 共通の見出し ---------- */
.top-b .tb-label{
  display:flex;align-items:center;gap:12px;
  font-family:var(--en);font-weight:700;font-size:14px;line-height:1.4;letter-spacing:.26em;color:var(--deep);
}
.top-b .tb-label i{font-style:normal;color:var(--blue)}
.top-b .tb-label .ja{font-family:var(--ja);letter-spacing:.08em}
.top-b .tb-label::after{content:"";flex:1 1 auto;height:1px;background:var(--hair);transform-origin:0 50%}
.top-b .tb-h2{margin-top:18px;font-weight:900;font-size:clamp(28px, 2.8vw + 6px, 46px);line-height:1.4;letter-spacing:.02em}
.top-b .tb-h2 em{font-style:normal;color:var(--deep)}
.top-b .tb-text{font-size:16px;line-height:2;color:var(--muted)}
.top-b .tb-sec{padding:112px 0}
.top-b .tb-sec--paper{background:var(--paper)}
.top-b .tb-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);column-gap:64px;align-items:end;margin-bottom:48px}
.top-b .tb-more{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:15px;text-decoration:none;color:var(--deep);border-bottom:1.5px solid currentColor;padding-bottom:4px}
.top-b .tb-more .tb-arr{font-family:var(--en);font-weight:800;transition:transform .2s}
.top-b .tb-more:hover .tb-arr{transform:translateX(4px)}

/* ---------- Hero（見開き） ---------- */
.top-b .tb-hero{padding:24px 0 88px;background:#fff}
.top-b .tb-masthead{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px;
  padding:12px 0 11px;border-bottom:1px solid var(--rule);
  font-family:var(--en);font-weight:700;font-size:13px;line-height:1.4;letter-spacing:.26em;color:var(--ink);
}
.top-b .tb-masthead span:nth-child(2){text-align:center;color:var(--deep)}
.top-b .tb-masthead span:last-child{text-align:right;color:var(--muted)}
.top-b .tb-hero-ey{
  margin-top:40px;display:flex;align-items:center;gap:14px;
  font-size:16px;font-weight:900;line-height:1.5;letter-spacing:.08em;color:var(--deep);
}
.top-b .tb-hero-ey::before{content:"";flex:0 0 40px;height:2px;background:var(--deep)}
.top-b .tb-hero h1{
  margin-top:18px;font-weight:900;
  font-size:clamp(31px, 7.3vw, 108px);line-height:1.12;letter-spacing:-.005em;
}
.top-b .tb-hero h1 .tb-blue{color:var(--deep)}
.top-b .tb-hero h1 .tb-hero-kw{display:block;margin-bottom:16px;font-size:15px;font-weight:700;line-height:1.6;letter-spacing:.06em;color:var(--muted)}
.top-b .tb-hero-rule{display:block;margin-top:30px;height:2px;background:var(--rule);transform-origin:0 50%}
.top-b .tb-spread{
  margin-top:36px;display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  grid-template-areas:"photo text";
  column-gap:0;align-items:stretch;
}
.top-b .tb-spread-photo{grid-area:photo;position:relative;display:flex;flex-direction:column;min-width:0;padding-right:44px}
.top-b .tb-spread-ph{
  position:relative;overflow:hidden;flex:1 1 auto;min-height:560px;
  background:linear-gradient(135deg, #eef3f7 0%, #dfe8ef 100%);
}
.top-b .tb-spread-ph img{position:absolute;left:0;top:-5%;width:100%;height:110%;object-fit:cover;object-position:46% 50%}
.top-b .tb-vtab{
  position:absolute;left:0;top:0;z-index:1;
  padding:22px 14px 26px;background:#fff;
  writing-mode:vertical-rl;text-orientation:upright;
  font-weight:900;font-size:19px;line-height:1.5;letter-spacing:.24em;color:var(--ink);
}
.top-b .tb-vtab span{color:var(--deep)}
.top-b .tb-figcap{display:flex;gap:14px;align-items:baseline;margin-top:12px;font-size:13px;line-height:1.7;color:var(--muted)}
.top-b .tb-figcap b{flex:0 0 auto;font-family:var(--en);font-weight:800;font-size:13px;letter-spacing:.18em;color:var(--ink)}
/* 見開きの“のど” */
.top-b .tb-spread-text{
  grid-area:text;position:relative;min-width:0;padding-left:44px;
  display:flex;flex-direction:column;
}
.top-b .tb-spread-text::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:1px;
  background:linear-gradient(to bottom, var(--hair) 0%, var(--hair) 100%);
}
.top-b .tb-spread-text::after{
  content:"";position:absolute;left:-44px;top:0;bottom:0;width:88px;pointer-events:none;
  background:linear-gradient(90deg, transparent 0%, rgba(16,22,27,.035) 50%, transparent 100%);
}
.top-b .tb-hero-lead{font-size:17px;font-weight:700;line-height:2;color:var(--ink)}
.top-b .tb-hero-actions{margin-top:26px;display:flex;flex-direction:column;gap:12px}
.top-b .tb-hero-actions .tb-btn{width:100%}
.top-b .tb-hero-lead2{margin-top:26px;font-size:15px;line-height:2;color:var(--muted)}
.top-b .tb-hero-plan{
  margin-top:24px;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:end;column-gap:16px;
  padding:14px 0 16px;border-top:2px solid var(--rule);border-bottom:1px solid var(--hair);
}
.top-b .tb-hp-l{display:flex;flex-direction:column;line-height:1.45;padding-bottom:4px}
.top-b .tb-hp-l span{font-weight:700;font-size:14px}
.top-b .tb-hp-l small{font-size:12px;color:var(--muted)}
.top-b .tb-hp-fig{display:flex;align-items:baseline;line-height:1;color:var(--deep)}
.top-b .tb-hp-fig .pre{font-size:15px;font-weight:900;margin-right:6px}
.top-b .tb-hp-fig b{font-family:var(--en);font-weight:900;font-size:clamp(52px, 4.4vw, 68px);line-height:.82;letter-spacing:-.01em;font-variant-numeric:tabular-nums}
.top-b .tb-hp-fig .unit{margin-left:4px;font-weight:900;font-size:18px}
.top-b .tb-hp-fig .unit small{font-size:11px}
.top-b .tb-hero-sub{margin-top:auto;padding-top:28px}
.top-b .tb-hero-sub-ph{position:relative;overflow:hidden;aspect-ratio:16 / 10;background:linear-gradient(135deg, #eef3f7 0%, #dfe8ef 100%)}
.top-b .tb-hero-sub-ph img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.top-b .tb-folio{
  margin-top:28px;display:flex;justify-content:space-between;align-items:center;gap:16px;
  padding-top:10px;border-top:1px solid var(--hair);
  font-family:var(--en);font-weight:700;font-size:12.5px;letter-spacing:.24em;color:var(--muted);
}

/* ---------- Movie ---------- */
.top-b .tb-movie{padding:96px 0 104px;background:var(--paper);border-top:1px solid var(--hair)}
.top-b .tb-movie .web-support-movie-head{align-items:flex-end;padding-bottom:18px;border-bottom:2px solid var(--rule);margin-bottom:28px}
.top-b .tb-movie .web-support-movie-index{margin:0;font-family:var(--en);font-weight:700;font-size:14px;letter-spacing:.26em;color:var(--deep)}
.top-b .tb-movie .web-support-movie-head h2{font-weight:900;color:var(--ink);font-size:clamp(26px, 2.6vw + 6px, 42px);line-height:1.4}
.top-b .tb-movie .web-support-movie-head h2 span{color:var(--deep)}
.top-b .tb-movie .web-support-movie-head > p{color:var(--muted);text-align:right}
.top-b .tb-movie .web-support-movie-play{font-weight:700}
.top-b .tb-movie .web-support-movie-player{max-width:1040px;margin-inline:auto}

/* ---------- 支援領域（大きな縦の目次） ---------- */
.top-b .tb-toc{border-top:2px solid var(--rule)}
.top-b .tb-toc-row{position:relative;display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);column-gap:56px;padding:44px 0 48px}
.top-b .tb-toc-row::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--hair);transform-origin:0 50%;transform:scaleX(var(--tb-r, 1))}
.top-b .tb-toc-key{display:grid;grid-template-columns:auto minmax(0,1fr);column-gap:22px;align-items:start;align-content:start}
.top-b .tb-toc-no{font-family:var(--en);font-weight:900;font-size:clamp(40px, 3.4vw, 56px);line-height:.9;color:var(--blue);letter-spacing:-.01em;padding-top:.2em}
.top-b .tb-toc-verb{font-size:clamp(64px, 7.6vw, 124px);line-height:1;letter-spacing:.02em}
.top-b .tb-toc-chap{grid-column:2;margin-top:14px;font-family:var(--en);font-weight:700;font-size:13px;letter-spacing:.26em;color:var(--muted)}
.top-b .tb-toc-body{min-width:0;padding-top:8px}
.top-b .tb-toc-sub{font-size:clamp(19px, .8vw + 12px, 23px);font-weight:900;line-height:1.5;color:var(--deep)}
.top-b .tb-toc-d{margin-top:8px;font-size:15.5px;line-height:1.95;color:var(--muted)}
.top-b .tb-svc{margin-top:22px;border-top:1px solid var(--rule)}
.top-b .tb-svc li{border-bottom:1px solid var(--hair)}
.top-b .tb-svc a{
  display:grid;grid-template-columns:minmax(0,1fr) auto 36px;align-items:center;column-gap:18px;
  padding:18px 0;text-decoration:none;transition:background-color .2s;
}
.top-b .tb-svc a:hover{background:var(--paper)}
.top-b .tb-svc a:focus-visible{outline:3px solid var(--blue);outline-offset:2px}
.top-b .tb-svc-nm{font-size:17px;font-weight:700;line-height:1.5}
.top-b .tb-svc-nm small{display:block;margin-top:2px;font-size:12.5px;font-weight:500;line-height:1.6;color:var(--muted)}
.top-b .tb-svc-pr{display:flex;align-items:baseline;line-height:1;color:var(--deep);white-space:nowrap}
.top-b .tb-svc-pr .pre{font-size:13px;font-weight:900;margin-right:5px}
.top-b .tb-svc-pr b{font-family:var(--en);font-weight:900;font-size:clamp(38px, 2.6vw + 6px, 48px);line-height:.84;font-variant-numeric:tabular-nums}
.top-b .tb-svc-pr .unit{margin-left:3px;font-size:14px;font-weight:900}
.top-b .tb-svc-pr .unit small{font-size:10.5px}
.top-b .tb-svc-go{display:grid;place-items:center;width:36px;height:36px;border-radius:50%;border:1.5px solid var(--ink);font-family:var(--en);font-weight:800;transition:background-color .2s, color .2s, border-color .2s}
.top-b .tb-svc a:hover .tb-svc-go{background:var(--deep);border-color:var(--deep);color:#fff}
.top-b .tb-toc-foot{margin-top:36px;display:flex;flex-wrap:wrap;gap:16px 28px;align-items:center;justify-content:space-between}
.top-b .tb-toc-foot p{font-size:13px;color:var(--muted)}

/* ---------- 実績（紙面の事例） ---------- */
.top-b .tb-cases-list{border-top:2px solid var(--rule)}
.top-b .tb-cs{position:relative;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);column-gap:56px;align-items:center;padding:56px 0}
.top-b .tb-cs + .tb-cs{border-top:1px solid var(--hair)}
.top-b .tb-cs--rev .tb-cs-media{order:2}
.top-b .tb-cs-media{
  position:relative;min-width:0;padding:56px 32px 44px;background:#eef3f7;
  --lw:min(460px, calc(((min(1200px, 100vw - 48px) - 56px) / 2 - 64px) / 1.14));
  --pr:.25;
  --pw:calc(var(--lw) * var(--pr));
}
.top-b .tb-cs-fig{position:absolute;left:16px;top:14px;font-family:var(--en);font-weight:800;font-size:12.5px;letter-spacing:.2em;color:var(--muted)}
.top-b .tb-cs-stage{position:relative;width:calc(var(--lw) * 1.14);max-width:100%;margin-inline:auto;padding-bottom:calc(var(--lw) * .04)}
.top-b .tb-lp{position:relative;z-index:0;width:var(--lw)}
.top-b .tb-lp::after{content:"";position:absolute;z-index:-1;left:-6%;right:-6%;bottom:calc(var(--lw) * -.035);height:calc(var(--lw) * .05);background:radial-gradient(ellipse at center, rgba(4,16,26,.3) 0%, rgba(4,16,26,0) 70%)}
.top-b .tb-lp-lid{
  position:relative;
  padding:calc(var(--lw) * .018) calc(var(--lw) * .018) calc(var(--lw) * .026);
  background:#0c0e11;
  border-radius:calc(var(--lw) * .028) calc(var(--lw) * .028) calc(var(--lw) * .006) calc(var(--lw) * .006);
  box-shadow:0 0 0 1px #9aa1a9, inset 0 0 0 1px #2a2f35, 0 40px 70px -34px rgba(4,16,26,.45);
}
.top-b .tb-lp-cam{position:absolute;top:calc(var(--lw) * .0075);left:50%;width:5px;height:5px;margin-left:-2.5px;border-radius:50%;background:#1d242c}
.top-b .tb-lp-screen{position:relative;aspect-ratio:16 / 10;overflow:hidden;background:#f4f3ef;border-radius:calc(var(--lw) * .007) calc(var(--lw) * .007) 0 0}
.top-b .tb-lp-screen img{display:block;width:100%;height:auto}
.top-b .tb-lp-hinge{width:86%;height:calc(var(--lw) * .007);margin-inline:auto;background:linear-gradient(180deg, #2a2f35 0%, #6d737a 100%);border-radius:0 0 3px 3px}
.top-b .tb-lp-base{
  position:relative;width:114%;margin-left:-7%;height:calc(var(--lw) * .024);
  background:linear-gradient(180deg, #eef0f2 0%, #d5d9dd 40%, #a8aeb5 100%);
  border-radius:2px 2px calc(var(--lw) * .04) calc(var(--lw) * .04) / 2px 2px calc(var(--lw) * .02) calc(var(--lw) * .02);
  box-shadow:0 1px 0 #7d838a;
}
.top-b .tb-lp-base::before{content:"";position:absolute;left:50%;top:0;width:15%;height:42%;transform:translateX(-50%);background:linear-gradient(180deg, #b4b9bf 0%, #d3d7db 100%);border-radius:0 0 8px 8px}
.top-b .tb-sp{position:absolute;right:0;bottom:0;z-index:2;width:var(--pw)}
.top-b .tb-sp-body{position:relative;aspect-ratio:71.5 / 147;background:#0c0e11;border-radius:calc(var(--pw) * .17);box-shadow:0 0 0 1.5px #a7adb4, 0 0 0 3px #dfe2e5, 0 34px 50px -22px rgba(4,16,26,.5)}
.top-b .tb-sp-screen{position:absolute;inset:calc(var(--pw) * .035);overflow:hidden;background:#fff;border-radius:calc(var(--pw) * .135)}
.top-b .tb-sp-island{position:absolute;z-index:2;top:calc(var(--pw) * .065);left:50%;width:30%;height:calc(var(--pw) * .085);transform:translateX(-50%);background:#0c0e11;border-radius:999px}
.top-b .tb-sp-view{position:absolute;left:0;right:0;top:calc(var(--pw) * .13);bottom:0;overflow:hidden}
.top-b .tb-sp-view img{display:block;width:100%;height:auto}
.top-b .tb-cs-cap{margin-top:18px;text-align:center;font-size:12px;line-height:1.6;letter-spacing:.06em;color:var(--muted)}
.top-b .tb-cs-body{min-width:0}
.top-b .tb-cs-folio{
  position:relative;display:flex;justify-content:space-between;align-items:center;gap:12px;
  padding-bottom:12px;margin-bottom:18px;
  font-family:var(--en);font-weight:700;font-size:13px;letter-spacing:.24em;line-height:1.4;color:var(--muted);
}
.top-b .tb-cs-folio::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--rule);transform-origin:0 50%;transform:scaleX(var(--tb-r, 1))}
.top-b .tb-cs-folio b{font-size:30px;font-weight:900;letter-spacing:.06em;color:var(--deep)}
.top-b .tb-cs-tag{font-family:var(--ja);padding:3px 12px;border:1px solid var(--ink);border-radius:999px;font-size:12.5px;font-weight:700;letter-spacing:.04em;color:var(--ink)}
.top-b .tb-cs-cat{font-size:13px;font-weight:700;color:var(--deep)}
.top-b .tb-cs-title{margin-top:8px;font-size:clamp(21px, 1vw + 12px, 27px);line-height:1.5;letter-spacing:.02em}
.top-b .tb-cs-dl{margin:20px 0 0;display:grid;grid-template-columns:7.5em minmax(0,1fr);border-top:1px solid var(--hair)}
.top-b .tb-cs-dl dt{padding:14px 0;border-bottom:1px solid var(--hair);font-size:13px;font-weight:700;line-height:1.7;color:var(--deep)}
.top-b .tb-cs-dl dt span{display:block;font-family:var(--en);font-size:11.5px;letter-spacing:.2em;color:var(--muted)}
.top-b .tb-cs-dl dd{margin:0;padding:14px 0;border-bottom:1px solid var(--hair)}
.top-b .tb-cs-dl li{position:relative;padding-left:18px;font-size:15px;line-height:1.75}
.top-b .tb-cs-dl li::before{content:"";position:absolute;left:2px;top:.85em;width:8px;height:2px;background:var(--blue)}
.top-b .tb-cs-dl li + li{margin-top:4px}
.top-b .tb-cs-go{margin-top:22px}
.top-b .tb-cases-foot{margin-top:24px;padding-top:28px;border-top:2px solid var(--rule);display:flex;flex-wrap:wrap;gap:16px 32px;align-items:center;justify-content:space-between}
.top-b .tb-cases-foot p{font-size:15px;line-height:1.85;color:var(--muted);max-width:40em}

/* ---------- お客様の声（三段組） ---------- */
.top-b .tb-voices{display:grid;grid-template-columns:repeat(3, minmax(0,1fr));border-top:2px solid var(--rule);border-bottom:1px solid var(--hair)}
.top-b .tb-voice{display:flex;flex-direction:column;padding:28px 28px 30px;border-left:1px solid var(--hair);min-width:0}
.top-b .tb-voice:first-child{border-left:0;padding-left:0}
.top-b .tb-voice:last-child{padding-right:0}
.top-b .tb-voice-no{display:flex;align-items:baseline;justify-content:space-between;gap:10px;font-family:var(--en);font-weight:700;font-size:13px;letter-spacing:.22em;color:var(--muted)}
.top-b .tb-voice-no span{font-family:var(--ja);letter-spacing:.04em;font-size:12.5px;color:var(--deep)}
.top-b .tb-voice-q{margin-top:18px;font-family:var(--en);font-weight:900;font-size:110px;line-height:.55;height:50px;color:var(--blue)}
.top-b .tb-voice h3{margin-top:10px;font-size:clamp(20px, .8vw + 12px, 24px);line-height:1.5;color:var(--deep);letter-spacing:.02em}
.top-b .tb-voice blockquote{margin-top:14px;flex:1 1 auto}
.top-b .tb-voice blockquote p{font-size:15px;line-height:2;color:#2c3a44}
.top-b .tb-voice figcaption{margin-top:18px;text-align:right;font-size:14px;font-weight:700}

/* ---------- 私たちの姿勢 ---------- */
.top-b .tb-stance-in{margin-top:40px;display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);column-gap:56px;align-items:start}
.top-b .tb-stance-h{font-size:clamp(36px, 4.6vw, 66px);line-height:1.22;letter-spacing:.01em}
.top-b .tb-stance-verbs{margin-top:36px;display:grid;grid-template-columns:repeat(3, minmax(0,1fr));border-top:2px solid var(--rule);border-bottom:1px solid var(--hair)}
.top-b .tb-stance-verbs li{padding:16px 18px 18px;border-left:1px solid var(--hair)}
.top-b .tb-stance-verbs li:first-child{border-left:0;padding-left:0}
.top-b .tb-stance-verbs i{display:block;font-style:normal;font-family:var(--en);font-weight:700;font-size:12.5px;letter-spacing:.24em;color:var(--blue)}
.top-b .tb-stance-verbs b{display:block;margin-top:4px;font-size:clamp(30px, 2.4vw + 8px, 44px);font-weight:900;line-height:1.2;color:var(--deep)}
.top-b .tb-stance-end{margin-top:26px;font-size:clamp(19px, .8vw + 11px, 23px);font-weight:900;line-height:1.6}
.top-b .tb-stance-in .tb-text{margin-top:12px;max-width:36em}
.top-b .tb-stance-fig{position:relative;display:flex;flex-direction:column}
.top-b .tb-stance-ph{position:relative;overflow:hidden;aspect-ratio:4 / 5;background:linear-gradient(135deg, #eef3f7 0%, #dfe8ef 100%)}
.top-b .tb-stance-ph img{position:absolute;left:0;top:-6%;width:100%;height:112%;object-fit:cover}
.top-b .tb-issues{margin-top:72px;display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);column-gap:56px;align-items:start}
.top-b .tb-issues-h{font-size:clamp(22px, 1vw + 14px, 28px);line-height:1.5}
.top-b .tb-issues-h small{display:block;font-family:var(--en);font-weight:700;font-size:13px;letter-spacing:.26em;color:var(--deep)}
.top-b .tb-issue-list{border-top:2px solid var(--rule)}
.top-b .tb-issue{position:relative;display:grid;grid-template-columns:72px 96px minmax(0,1fr);align-items:center;column-gap:16px;padding:22px 0}
.top-b .tb-issue::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--hair);transform-origin:0 50%;transform:scaleX(var(--tb-r, 1))}
.top-b .tb-issue-no{font-family:var(--en);font-weight:900;font-size:44px;line-height:1;color:var(--blue)}
.top-b .tb-issue h4{justify-self:start;padding:4px 14px;border-radius:999px;background:var(--deep);color:#fff;font-size:15px;line-height:1.5;letter-spacing:.08em}
.top-b .tb-issue p{font-size:clamp(17px, .6vw + 12px, 20px);font-weight:700;line-height:1.55}

/* ---------- よくある質問（2026-10 SEO監査で追加。FAQPage の元データ） ---------- */
.top-b .tb-faq{border-top:2px solid var(--rule)}
.top-b .tb-faq-item{border-bottom:1px solid var(--hair)}
.top-b .tb-faq-item summary{display:grid;grid-template-columns:40px minmax(0,1fr) 28px;align-items:center;column-gap:14px;padding:22px 0;cursor:pointer;list-style:none}
.top-b .tb-faq-item summary::-webkit-details-marker{display:none}
.top-b .tb-faq-item summary:focus-visible{outline:2px solid var(--deep);outline-offset:4px}
.top-b .tb-faq-mk{font-family:var(--en);font-weight:900;font-size:30px;line-height:1;color:var(--blue)}
.top-b .tb-faq-qt{font-size:clamp(16px, .5vw + 13px, 19px);font-weight:700;line-height:1.6}
.top-b .tb-faq-ic{position:relative;width:20px;height:20px;justify-self:end}
.top-b .tb-faq-ic::before,.top-b .tb-faq-ic::after{content:"";position:absolute;left:0;top:50%;width:20px;height:2px;margin-top:-1px;background:var(--deep)}
.top-b .tb-faq-ic::after{transform:rotate(90deg)}
.top-b .tb-faq-item[open] .tb-faq-ic::after{transform:none}
.top-b .tb-faq-a{padding:0 42px 24px 54px}
.top-b .tb-faq-a p{font-size:15.5px;line-height:1.95;color:var(--muted)}
@media (max-width: 899px){
  .top-b .tb-faq-item summary{grid-template-columns:28px minmax(0,1fr) 20px;column-gap:10px;padding:18px 0}
  .top-b .tb-faq-mk{font-size:24px}
  .top-b .tb-faq-ic,.top-b .tb-faq-ic::before,.top-b .tb-faq-ic::after{width:16px}
  .top-b .tb-faq-a{padding:0 0 20px 38px}
  .top-b .tb-faq-a p{font-size:15px}
}

/* ---------- Web戦略室 ---------- */
.top-b .tb-blog-mast{margin-top:22px;display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:8px 24px;padding-bottom:14px;border-bottom:2px solid var(--rule)}
.top-b .tb-blog-mast h2{font-size:clamp(30px, 3vw + 8px, 54px);line-height:1.25;letter-spacing:.02em}
.top-b .tb-blog-mast p{font-family:var(--en);font-weight:700;font-size:14px;letter-spacing:.24em;color:var(--muted)}
.top-b .tb-blog-sub{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 24px;padding:12px 0;border-bottom:1px solid var(--hair);font-size:14px;color:var(--muted)}
.top-b .tb-blog-sub b{font-family:var(--en);font-weight:700;letter-spacing:.2em;color:var(--deep)}
.top-b .tb-lead-post{position:relative;margin-top:40px;display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);column-gap:44px;align-items:center}
.top-b .tb-post-ph{position:relative;overflow:hidden;aspect-ratio:16 / 9;background:linear-gradient(135deg, #e6f0f7 0%, #d3e3ef 100%)}
.top-b .tb-post-ph img{display:block;width:100%;height:100%;object-fit:cover;transition:transform .5s}
.top-b .tb-lead-post:hover .tb-post-ph img,.top-b .tb-post:hover .tb-post-ph img{transform:scale(1.04)}
.top-b .tb-post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:6px 14px;line-height:1.5}
.top-b .tb-post-cat{font-size:12.5px;font-weight:700;color:var(--deep);padding-bottom:1px;border-bottom:1.5px solid var(--deep)}
.top-b .tb-post-date{font-family:var(--en);font-size:15px;font-weight:700;letter-spacing:.1em;color:var(--muted)}
.top-b .tb-lead-post h3{margin-top:14px;font-size:clamp(22px, 1.2vw + 12px, 30px);line-height:1.5;letter-spacing:.02em}
.top-b .tb-lead-post .tb-excerpt{margin-top:14px;font-size:15px;line-height:2;color:var(--muted)}
.top-b .tb-lead-post .tb-read{margin-top:18px;display:inline-flex;gap:8px;font-size:14px;font-weight:700;color:var(--deep)}
.top-b .tb-lead-post h3 a,.top-b .tb-post h3 a{text-decoration:none}
.top-b .tb-lead-post h3 a::after,.top-b .tb-post h3 a::after{content:"";position:absolute;inset:0}
.top-b .tb-lead-post h3 a:focus-visible,.top-b .tb-post h3 a:focus-visible{outline:none}
.top-b .tb-lead-post h3 a:focus-visible::after,.top-b .tb-post h3 a:focus-visible::after{outline:3px solid var(--blue);outline-offset:4px}
.top-b .tb-lead-post:hover h3,.top-b .tb-post:hover h3{color:var(--deep)}
.top-b .tb-posts{margin-top:44px;display:grid;grid-template-columns:repeat(3, minmax(0,1fr));border-top:2px solid var(--rule)}
.top-b .tb-post{position:relative;padding:24px 24px 4px;border-left:1px solid var(--hair);min-width:0}
.top-b .tb-post:first-child{border-left:0;padding-left:0}
.top-b .tb-post:last-child{padding-right:0}
.top-b .tb-post .tb-post-meta{margin-top:14px}
.top-b .tb-post h3{margin-top:8px;font-size:16.5px;font-weight:700;line-height:1.65}
.top-b .tb-blog-foot{margin-top:44px;text-align:right}

/* ---------- 無料Web診断（深い青の帯） ---------- */
.top-b .tb-cta{position:relative;overflow:hidden;color:#fff;background:linear-gradient(120deg, #1E5F8C 0%, #1b5783 55%, #164a70 100%);padding:96px 0 112px}
.top-b .tb-masthead--cta{color:#fff;border-bottom-color:rgba(255,255,255,.55);margin-bottom:56px}
.top-b .tb-masthead--cta span:nth-child(2){color:var(--sky)}
.top-b .tb-masthead--cta span:last-child{color:rgba(255,255,255,.75)}
.top-b .tb-cta-in{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,6fr);column-gap:64px;align-items:center}
.top-b .tb-cta-kicker{display:inline-block;padding:6px 18px;border-radius:999px;border:1px solid rgba(255,255,255,.66);background:rgba(16,40,60,.24);font-size:15px;font-weight:700;line-height:1.6}
.top-b .tb-cta .tb-h2{margin-top:22px;font-size:clamp(30px, 3vw + 8px, 52px);line-height:1.36}
.top-b .tb-cta-text{margin-top:18px;font-size:16px;line-height:2;color:rgba(255,255,255,.92)}
.top-b .tb-cta-pts{margin-top:30px;border-top:2px solid #fff}
.top-b .tb-cta-pts li{position:relative;display:grid;grid-template-columns:56px minmax(0,1fr);align-items:baseline;padding:14px 0}
.top-b .tb-cta-pts li::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:rgba(255,255,255,.35);transform-origin:0 50%;transform:scaleX(var(--tb-r, 1))}
.top-b .tb-cta-pts i{font-style:normal;font-family:var(--en);font-weight:900;font-size:28px;line-height:1;color:var(--sky)}
.top-b .tb-cta-pts b{font-size:17px;font-weight:700;line-height:1.5}
.top-b .tb-cta-actions{margin-top:32px;display:grid;grid-template-columns:repeat(2, minmax(0,1fr));gap:12px}
.top-b .tb-cta-actions .tb-btn{width:100%;padding-inline:18px}
.top-b .tb-cta-main{grid-column:1 / -1;min-height:66px;font-size:17px}
.top-b .tb-sheet{display:block;text-decoration:none;color:inherit}
.top-b .tb-sheet-paper{position:relative;padding:14px;background:#fff;box-shadow:0 50px 90px -40px rgba(4,16,28,.75);transform:rotate(1.6deg);transition:transform .4s}
.top-b .tb-sheet:hover .tb-sheet-paper{transform:rotate(0deg) translateY(-4px)}
.top-b .tb-sheet-ph{position:relative;aspect-ratio:1200 / 750;background:#f4f3ef;overflow:hidden}
.top-b .tb-sheet-ph img{display:block;width:100%;height:100%;object-fit:cover}
.top-b .tb-sheet .tb-figcap{color:rgba(255,255,255,.85);margin-top:22px}
.top-b .tb-sheet .tb-figcap b{color:#fff}
.top-b .tb-sheet .tb-figcap .tb-arr{font-family:var(--en);font-weight:800;transition:transform .2s;display:inline-block}
.top-b .tb-sheet:hover .tb-figcap .tb-arr{transform:translateX(4px)}
.top-b .tb-sheet:focus-visible{outline:3px solid var(--sky);outline-offset:6px}

/* ---------- Responsive ---------- */
@media (max-width: 1100px){
  .top-b .tb-toc-row{column-gap:36px}
  .top-b .tb-cs{column-gap:40px}
  .top-b .tb-cs-media{--lw:min(460px, calc(((min(1200px, 100vw - 48px) - 40px) / 2 - 64px) / 1.14))}
  .top-b .tb-svc a{grid-template-columns:minmax(0,1fr) auto 32px;column-gap:12px}
}
@media (max-width: 899px){
  .top-b .tb-wrap{width:calc(100% - 40px)}
  .top-b .tb-hero{padding:14px 0 64px}
  .top-b .tb-masthead{grid-template-columns:1fr auto;font-size:11.5px;letter-spacing:.2em;padding:9px 0 8px}
  .top-b .tb-masthead span:nth-child(2){display:none}
  .top-b .tb-hero-ey{margin-top:22px;font-size:14px;gap:10px}
  .top-b .tb-hero-ey::before{flex-basis:24px}
  .top-b .tb-hero h1{margin-top:12px;font-size:clamp(30px, 8.6vw, 60px);line-height:1.18}
  .top-b .tb-hero h1 .tb-hero-kw{margin-bottom:10px;font-size:12.5px;letter-spacing:.02em}
  .top-b .tb-hero-rule{margin-top:20px}
  .top-b .tb-spread{margin-top:22px;grid-template-columns:minmax(0,1fr);grid-template-areas:"text" "photo";row-gap:36px}
  .top-b .tb-spread-text{padding-left:0}
  .top-b .tb-spread-text::before,.top-b .tb-spread-text::after{display:none}
  .top-b .tb-spread-photo{padding-right:0}
  .top-b .tb-spread-ph{min-height:0;aspect-ratio:4 / 3.4;flex:none}
  .top-b .tb-vtab{padding:14px 9px 16px;font-size:15px}
  .top-b .tb-hero-lead{font-size:15.5px;line-height:1.95}
  .top-b .tb-hero-actions{margin-top:18px;gap:10px}
  .top-b .tb-hero-actions .tb-btn{min-height:54px;padding:12px 20px}
  .top-b .tb-hero-lead2{margin-top:20px}
  .top-b .tb-hero-sub{display:none}

  .top-b .tb-sec{padding:76px 0}
  .top-b .tb-movie{padding:64px 0 72px}
  .top-b .tb-movie .web-support-movie-head > p{text-align:left}
  .top-b .tb-text{font-size:15px;line-height:1.95}
  .top-b .tb-head{grid-template-columns:minmax(0,1fr);row-gap:18px;margin-bottom:32px}

  .top-b .tb-toc-row{grid-template-columns:minmax(0,1fr);row-gap:18px;padding:32px 0 36px}
  .top-b .tb-toc-key{column-gap:14px}
  .top-b .tb-toc-no{font-size:34px}
  .top-b .tb-toc-verb{font-size:clamp(56px, 17vw, 88px)}
  .top-b .tb-toc-chap{margin-top:8px}
  .top-b .tb-toc-body{padding-top:0}
  .top-b .tb-svc a{grid-template-columns:minmax(0,1fr) 30px;row-gap:6px;padding:16px 0}
  .top-b .tb-svc-pr{grid-column:1;grid-row:2}
  .top-b .tb-svc-go{grid-column:2;grid-row:1 / span 2;width:30px;height:30px}
  .top-b .tb-svc-pr b{font-size:40px}

  .top-b .tb-cs{grid-template-columns:minmax(0,1fr);row-gap:28px;padding:40px 0}
  .top-b .tb-cs--rev .tb-cs-media{order:0}
  .top-b .tb-cs-media{padding:44px 20px 30px;--lw:calc((100vw - 40px - 40px) / 1.14);--pr:.3}
  .top-b .tb-cs-folio b{font-size:26px}
  .top-b .tb-cs-dl{grid-template-columns:minmax(0,1fr)}
  .top-b .tb-cs-dl dt{padding:12px 0 0;border-bottom:0}
  .top-b .tb-cs-dl dd{padding:4px 0 12px}

  .top-b .tb-voices{grid-template-columns:minmax(0,1fr)}
  .top-b .tb-voice,.top-b .tb-voice:first-child,.top-b .tb-voice:last-child{padding:24px 0 26px;border-left:0}
  .top-b .tb-voice + .tb-voice{border-top:1px solid var(--hair)}

  .top-b .tb-stance-in{grid-template-columns:minmax(0,1fr);row-gap:36px;margin-top:28px}
  .top-b .tb-stance-h{font-size:clamp(30px, 8.6vw, 56px)}
  .top-b .tb-stance-verbs li{padding:12px 10px 14px}
  .top-b .tb-stance-verbs b{font-size:clamp(22px, 6.6vw, 36px)}
  .top-b .tb-stance-ph{aspect-ratio:3 / 2}
  .top-b .tb-issues{grid-template-columns:minmax(0,1fr);row-gap:20px;margin-top:56px}
  .top-b .tb-issue{grid-template-columns:44px minmax(0,1fr);row-gap:6px;padding:18px 0}
  .top-b .tb-issue-no{font-size:32px;grid-row:1 / span 2}
  .top-b .tb-issue h4{font-size:13.5px;padding:2px 12px}
  .top-b .tb-issue p{font-size:16.5px}

  .top-b .tb-lead-post{grid-template-columns:minmax(0,1fr);row-gap:18px;margin-top:28px}
  .top-b .tb-posts{grid-template-columns:minmax(0,1fr);margin-top:32px}
  .top-b .tb-post,.top-b .tb-post:first-child,.top-b .tb-post:last-child{display:grid;grid-template-columns:120px minmax(0,1fr);column-gap:14px;padding:16px 0;border-left:0;border-bottom:1px solid var(--hair)}
  .top-b .tb-post .tb-post-ph{grid-row:1 / span 2}
  .top-b .tb-post .tb-post-meta{margin-top:0}
  .top-b .tb-post h3{margin-top:4px;font-size:14.5px;line-height:1.55}
  .top-b .tb-post-date{font-size:13px}
  .top-b .tb-blog-foot{text-align:left;margin-top:32px}

  .top-b .tb-cta{padding:64px 0 76px}
  .top-b .tb-masthead--cta{margin-bottom:36px}
  .top-b .tb-cta-in{grid-template-columns:minmax(0,1fr);row-gap:48px}
  .top-b .tb-cta-actions{grid-template-columns:minmax(0,1fr);max-width:480px}
  .top-b .tb-cta .tb-h2{font-size:clamp(25px, 6.6vw, 40px)}
}
@media (max-width: 600px){
  .top-b .tb-cs-title{font-size:20px}
  .top-b .tb-cs-dl li{font-size:14.5px}
  .top-b .tb-cta-main{min-height:60px;font-size:16px}
}
/* 日本語見出しの改行：文節で折り返し、最終行が1文字にならないよう整える */ :where(h1,h2,h3){text-wrap:balance;word-break:auto-phrase} :where(h1,h2,h3) .kp, :where(h1,h2,h3).kp{word-break:auto-phrase}
/* 小さい画面での見出しの折り返し調整 */ @media (max-width:380px){#tb-blog-title{font-size:min(7.2vw,28px)!important}}