/* Treatment design-2 (raw) page presentation. SSOT: sites/shared/treatment-system/treatment-design2.css
 * 由来: tools/wp-migrations/treatment-pages-20260815/pages/root-canal-design2.html のインライン<style>を昇格(2026-08-30, DL-149)。
 * 編集はこのSSOTのみ。テーマ側 css/treatment-design2.css は tools/sync_shared_components.py で単向同期。
 * 注意: .rt2-page figure img 等は common.css と同特異度で「読込順」により勝つ(codex §9)。common.css より後の読込が前提。 */
/* フォントは enqueue の external-treatment-design2-fonts (<link>先行読込) が供給。
   @import は CSS 到着後の串行取得となり、入場アニメ後の字形差替=「二度読み」閃動の原因だった(2026-08-30 owner指摘)。 */

/* --- 宿主既定タイトル領域を隠す(必須) --- */
.title_area{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);margin:-1px}
.page_img{display:none}
.page_title{display:none!important}
/* handa のパンくずNAV(header直下の白帯)。本CSSはraw頁限定読込のため無差別非表示で安全 */
nav.breadcrumbs{display:none!important}
#page_mv{display:none!important}
/* 通栏写真をfooterへ密着させる(宿主.mainのmargin-bottom:100px相殺) */
.main{margin-bottom:0!important}

/* motomachi流 is-view-el(右から8%滑入)は要素が一時的に右へはみ出す。
   母町本家は body 側で横overflowを殺しているのと同じ処置(viewport幅なので100vw破りは影響なし) */
html,body{overflow-x:clip!important}

/* ================= tokens ================= */
.rt2-page{
  --navy:#061549;
  --navy-deep:#15345f;
  --blue:#0078d4;
  --orange:#f0743a;
  --orange-hot:#ff8a3d;
  --orange-deep:#d85820;
  --ink:#181d27;
  --ink-soft:#57606f;
  --hero-fg:#cdd3e3;
  --line:#dfe3ea;
  --paper:#ffffff;
  --paper-soft:#f6f7fa;
  --shadow-c:0 1px 2px rgba(6,21,73,.10);
  --shadow-a:0 14px 30px rgba(6,21,73,.09);
  --ease-hover:cubic-bezier(0.4,0,0,1);       /* 交互反馈(~200ms専用) */
  --ease-hairline:cubic-bezier(0.16,1,0.3,1);  /* 分隔線の描画 */
  --ease-view:cubic-bezier(0,.4,.3,1); /* motomachi実測: transform 1s + opacity 1.4s */
  font-family:'Noto Sans JP',"Hiragino Sans","Yu Gothic",sans-serif;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
.rt2-page *{box-sizing:border-box}
.rt2-page img{max-width:100%;display:block}
.rt2-page p,.rt2-page li{margin:0 0 1.3em;line-height:1.9;max-width:34em;letter-spacing:0}
.rt2-page p:last-child{margin-bottom:0}

.rt2-full{width:100vw;margin-left:calc(50% - 50vw);position:relative}
.rt2-wrap{max-width:920px;margin:0 auto;padding:0 24px}

.rt2-eyebrow{
  font-family:'Jost',sans-serif;font-weight:500;font-size:11.5px;
  letter-spacing:.22em;text-transform:uppercase;color:var(--blue);
  display:block;margin-bottom:14px;
}

/* ================= hairline signature ================= */
.rt2-hr{position:relative;height:1px;background:var(--line);overflow:hidden;margin:0}
.rt2-hr::after{
  content:"";position:absolute;inset:0;background:var(--navy);
  transform:scaleX(0);transform-origin:0 0;
  transition:transform 1.4s var(--ease-hairline);
}
.rt2-hr.active::after{transform:scaleX(1)}

/* ================= hero (低背・38%縦スライド柱) ================= */
.rt2-hero{
  background-color:var(--navy);
  /* 質感審査(8/29): 純色平涂→方向光。上端の淡光+中心へ沈む放射で空間進深 */
  background-image:
    linear-gradient(180deg,rgba(255,255,255,.07) 0%,rgba(255,255,255,0) 36%),
    radial-gradient(120% 90% at 50% 0%,rgba(21,52,95,.55) 0%,var(--navy) 72%);
  color:var(--hero-fg);
  padding:56px 0 52px;position:relative;isolation:isolate;
  overflow:hidden;
}
.rt2-hero__noise{
  position:absolute;top:-25%;left:-25%;width:150%;height:150%;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat:repeat;opacity:.09;z-index:0;pointer-events:none;
  animation:rt2-noise 1s steps(3) infinite;
}
@keyframes rt2-noise{
  0%{transform:translate(-5%,-5%)}25%{transform:translate(5%,5%)}
  50%{transform:translate(0%,0%)}75%{transform:translate(5%,-5%)}
  100%{transform:translate(-5%,5%)}
}
/* ghost英字は写真の上・本文の下(z: noise0 < 写真1 < ghost2 < 本文3) */
.rt2-hero__ghost{
  position:absolute;top:52%;left:0;width:100%;transform:translateY(-50%);
  overflow:hidden;white-space:nowrap;z-index:2;pointer-events:none;line-height:1;
}
.rt2-hero__ghost-track{display:flex;width:max-content;animation:rt2-drift 46s linear infinite}
.rt2-hero__ghost span{
  font-family:'Jost',sans-serif;font-weight:100;font-size:clamp(80px,15vw,168px);
  letter-spacing:.03em;color:#ffffff;opacity:.13;padding-right:.6em;
  mix-blend-mode:exclusion; /* 藏青上=従来の淡字/写真上=暗転で被らず読める */
}
@keyframes rt2-drift{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.rt2-hero__body{position:relative}
.rt2-hero__grid{display:grid;gap:36px}
.rt2-hero__copy{position:relative;z-index:3}
.rt2-page .rt2-hero__kicker{
  font-size:13.6px;letter-spacing:.06em;opacity:.72;margin-bottom:18px;
  font-weight:500;
}
.rt2-page .rt2-hero__title{
  /* DL-150補遺5: .rt2-page 前置は必須。裸クラス(0,1,0)だと handa の .main h1(0,1,1)に
     font-size/色/border を奪われ表題が不可視化した実害(specialneeds 2026-08-30)。
     border/padding は handa .main h1 の下線装飾を明示中和。 */
  font-family:'Noto Serif JP',serif;font-weight:600;
  font-size:clamp(28.8px,4.2vw,44px);line-height:1.42;color:var(--hero-fg);
  margin:0 0 14px;padding-bottom:0;border-bottom:0;text-align:left;letter-spacing:.01em;
  max-width:16em;
}
.rt2-page .rt2-hero__sub{
  font-size:13.6px;letter-spacing:.12em;opacity:.62;margin-bottom:26px;font-weight:500;
}
.rt2-page .rt2-hero__lead{
  font-family:'Noto Serif JP',serif;font-weight:500;
  font-size:clamp(15.8px,1.9vw,19.2px);line-height:2;opacity:.92;max-width:29em;
}
/* motomachi FV実測: fvBlurReveal 0.8s ease-out / delay階段 0.8-2.2s */
@keyframes fvBlurReveal{
  0%{opacity:0;transform:scale(0.98);filter:blur(4px)}
  100%{opacity:1;transform:scale(1);filter:blur(0px)}
}
.rt2-hero__kicker,.rt2-hero__title,.rt2-hero__sub,.rt2-hero__lead{
  opacity:0;animation:fvBlurReveal .8s ease-out forwards;
}
.rt2-hero__kicker{animation-delay:.8s}
.rt2-hero__title{animation-delay:1.2s}
.rt2-hero__sub{animation-delay:1.6s}
.rt2-hero__lead{animation-delay:1.8s}

/* ================= sections ================= */
.rt2-section{padding-top:0}
.rt2-section h2{
  font-family:'Noto Serif JP',serif;font-weight:600;color:var(--navy-deep);
  font-size:clamp(24px,3.4vw,32.8px);line-height:1.55;margin:0 0 28px;
}
.rt2-sub{margin-top:44px}
.rt2-sub:first-of-type{margin-top:0}


/* section1 asymmetric two-col */
.rt2-grid-asym{display:grid;gap:40px;align-items:start}
@media (min-width:800px){
  .rt2-grid-asym{grid-template-columns:1.35fr .9fr;gap:56px}
  .rt2-grid-asym .rt2-figure{margin-top:34px}
}
.rt2-figure{border-radius:3px;overflow:hidden;box-shadow:var(--shadow-c),var(--shadow-a)}
.rt2-figure img{width:100%;height:auto}
.rt2-figure figcaption{
  font-size:12px;color:var(--ink-soft);padding:10px 2px 0;letter-spacing:.02em;
}

/* arrow link */
.rt2-page .rt2-arrow-link{
  display:inline-flex;align-items:center;gap:10px;color:var(--navy-deep);
  text-decoration:underline;text-decoration-color:rgba(0,120,212,.35);text-underline-offset:3px;
  font-weight:500;font-size:15.0px;margin-top:6px;
}
.rt2-arrow-link::after{
  content:"";width:9px;height:2px;border-radius:1px;background:var(--blue);
  transition:width 240ms var(--ease-hover),border-radius 240ms var(--ease-hover);
}
.rt2-page .rt2-arrow-link:hover{color:var(--blue)}
.rt2-arrow-link:hover::after{width:18px;border-radius:1px}

/* feature cards (章3) */
.rt2-feature{padding-top:0}
.rt2-feature + .rt2-feature{margin-top:52px}


/* step figure pairs (章4) */
.rt2-step__cols{display:flex;gap:30px;align-items:flex-start}
.rt2-step__body{flex:1;min-width:0}
.rt2-step__fig{width:185px;flex-shrink:0;margin:0}
.rt2-step__fig img{width:100%;height:auto;border-radius:3px;border:1px solid #e3eaf2;background:#fff;box-shadow:0 1px 2px rgba(6,21,73,.06),0 8px 20px rgba(6,21,73,.05)}
.rt2-step__fig figcaption{margin-top:8px;font-size:12px;color:var(--ink-soft);display:flex;align-items:center;gap:7px}
.rt2-stagechip{display:inline-flex;align-items:center;justify-content:center;width:18px;height:18px;border-radius:50%;background:var(--navy);color:#fff;font-size:11px;font-weight:700;flex-shrink:0}
@media (max-width:800px){.rt2-step__cols{flex-direction:column}.rt2-step__fig{width:min(240px,100%)}}

/* step cards */
.rt2-steps{display:flex;flex-direction:column;gap:22px}
.rt2-step{
  position:relative;background:var(--paper-soft);border-radius:3px;
  padding:28px 26px 28px 96px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.75),var(--shadow-c),var(--shadow-a);
  transition:transform 240ms var(--ease-hover),box-shadow 240ms var(--ease-hover);
}
.rt2-step:hover{transform:translateY(-3px);box-shadow:inset 0 1px 0 rgba(255,255,255,.75),0 2px 6px rgba(6,21,73,.14),0 24px 44px rgba(6,21,73,.15)}
.rt2-step__num{
  position:absolute;left:26px;top:28px;font-family:'Jost',sans-serif;font-weight:300;
  font-size:33.6px;color:var(--blue);opacity:.85;font-variant-numeric:tabular-nums;line-height:1;
}
.rt2-step h3{margin-bottom:8px;color:var(--navy-deep)}
.rt2-step p{margin-bottom:0;max-width:none}
@media (max-width:520px){
  .rt2-step{padding-left:26px;padding-top:64px}
  .rt2-step__num{top:20px;left:26px;font-size:27.2px}
}

/* faq */
.rt2-faq{border-top:1px solid var(--line)}
.rt2-faq:last-child{border-bottom:1px solid var(--line)}
.rt2-faq summary{
  list-style:none;cursor:pointer;padding:22px 34px 22px 0;position:relative;
  font-weight:700;font-size:16px;color:var(--navy-deep);
  display:flex;gap:14px;
}
.rt2-faq summary::-webkit-details-marker{display:none}
.rt2-faq summary::after{
  content:"";position:absolute;right:4px;top:50%;width:9px;height:9px;
  border-right:1px solid var(--navy-deep);border-bottom:1px solid var(--navy-deep);
  transform:translateY(-70%) rotate(45deg);
  transition:transform 240ms var(--ease-hover);
}
.rt2-faq[open] summary::after{transform:translateY(-30%) rotate(225deg)}
.rt2-faq__a{color:var(--ink-soft);display:grid;grid-template-rows:0fr;transition:grid-template-rows .35s var(--ease-hover)}
.rt2-faq__a>div{overflow:hidden;min-height:0}
.rt2-faq__a p{margin:0;max-width:none;line-height:1.9;padding:0 0 26px 4px}
.rt2-faq[open] .rt2-faq__a{grid-template-rows:1fr}
@keyframes rt2-faqin{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}

/* 結び前 通栏写真帯 (高解像度 about_bg.webp 2880x1808 = 1440幅表示でも等倍以下、
   カード内縮小をやめて元の横一面フルブリード構成に戻す) */
.rt2-photoband{
  /* margin簡写は.rt2-fullのmargin-left:calc(50%-50vw)を潰す(実害済)→longhandで指定 */
  margin-top:0;margin-right:0;margin-bottom:0;
  height:clamp(300px,38vw,480px);position:relative;overflow:hidden;
}
.rt2-page .rt2-photoband img{width:100%;height:100%;object-fit:cover}
.rt2-photoband::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,21,73,0) 55%,rgba(6,21,73,.55) 100%);
}
.rt2-photoband__cap{
  position:absolute;left:max(24px,calc(50vw - 436px));bottom:20px;color:#fff;font-size:12.5px;
  letter-spacing:.1em;opacity:.9;z-index:1;
}

/* closing navy band (bookend) */
.rt2-closing{background:var(--paper);color:var(--ink);border-top:1px solid var(--line);margin-top:clamp(110px,18vw,200px);padding:64px 0 74px;overflow-x:clip}
.rt2-closing h2{
  font-family:'Noto Serif JP',serif;font-weight:600;color:var(--navy-deep);
  font-size:clamp(22.4px,3vw,29.6px);margin:0 0 22px;
}
.rt2-closing p{color:var(--ink-soft);max-width:36em}
.rt2-closing__links{display:flex;flex-wrap:wrap;gap:10px 26px;margin:26px 0 34px}
.rt2-page .rt2-closing__links a{color:var(--navy-deep);opacity:.85;text-decoration:none;font-size:14.4px;border-bottom:1px solid var(--line);padding-bottom:2px}
.rt2-page .rt2-closing__links a:hover{opacity:1;border-color:var(--navy-deep)}
.rt2-cta{display:flex;flex-wrap:wrap;gap:14px}
.rt2-page .rt2-btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:15px 30px;border-radius:3px;font-size:14.7px;font-weight:500;
  text-decoration:none;transition:transform 200ms var(--ease-hover),box-shadow 200ms var(--ease-hover),background 200ms var(--ease-hover);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}
/* 甲方嗜好: WEB予約=テーマ橙系(action-orange族 #ff8a3d→#f0743a→#d85820) */
.rt2-page .rt2-btn--primary{
  /* 白字対比AA準拠(実測2.35→4.6:1〜)へ渐变一段深め。橙のブランド性は保持 */
  background:linear-gradient(135deg,#e8631f 0%,#d85820 46%,#a63f13 100%);
  color:#fff;box-shadow:inset 0 0.5px 0 rgba(255,255,255,.45),0 10px 22px rgba(216,88,32,.34);
}
.rt2-btn--primary:hover{transform:translateY(-2px);box-shadow:inset 0 0.5px 0 rgba(255,255,255,.45),0 16px 32px rgba(216,88,32,.44)}
.rt2-btn--primary:active{transform:scale(.97)}
.rt2-page .rt2-btn--ghost{background:#fff;color:var(--navy-deep);border:1px solid #c9d2e0;box-shadow:0 1px 2px rgba(6,21,73,.05),inset 0 1px 0 rgba(255,255,255,.8)}
.rt2-btn--ghost:hover{background:#eef1f6;border-color:var(--navy-deep);transform:translateY(-2px)}
.rt2-btn--ghost:active{transform:scale(.97)}

/* ============ motomachi実測スクロール顕示(theme-style.css逐字移植) ============ */
.rt2-page .is-view-el{opacity:0;transform:translateX(8%)}
.rt2-page .is-view-el.active{
  opacity:1;transform:translateX(0);
  transition:opacity 1.4s var(--ease-view),transform 1s var(--ease-view);
}
.rt2-page .is-view-img{opacity:0;transform:translateY(8%)}
.rt2-page .is-view-img.active{
  opacity:1;transform:translateY(0);
  transition:opacity 1.4s var(--ease-view),transform 1s var(--ease-view);
}
/* apico三連図: 番号順の時差入場(90ms/180ms) */
.rt2-page .rt2-apico figure{opacity:0;transform:translateY(8%);transition:opacity 1.4s var(--ease-view),transform 1s var(--ease-view)}
.rt2-page .rt2-apico.active figure{opacity:1;transform:translateY(0)}
.rt2-page .rt2-apico.active figure:nth-child(2){transition-delay:90ms}
.rt2-page .rt2-apico.active figure:nth-child(3){transition-delay:180ms}

@media (max-width:640px){
  .rt2-hero{padding:44px 0 40px}
  .rt2-closing{padding:52px 0 60px}
}

@media (prefers-reduced-motion:reduce){
  .rt2-page *{animation:none!important;transition:none!important}
  .rt2-hr::after{transform:scaleX(1)}
  .rt2-hero__noise{opacity:.03;animation:none}
  .rt2-hero__ghost-track{animation:none;transform:none}
  .rt2-hero__kicker,.rt2-hero__title,.rt2-hero__sub,.rt2-hero__lead{opacity:1}
  .rt2-page .is-view-el,.rt2-page .is-view-img{opacity:1;transform:none}
  .rt2-step:hover,.rt2-btn:hover{transform:none}
}

/* rescue: 宿主 .main figure img{margin-bottom:40px}(common.css:1414, 陷阱11同族)が
   全figureの画像下に隠れ40px空白を作る → 同特異度・後出しで無効化 */
.rt2-page figure img{margin-bottom:0}
/* rescue: bare h3/summary fell to theme-default tiny sizes (html{font-size:10px} trap) */
.rt2-page h3{margin:0 0 10px;color:var(--navy-deep);font-size:18px;font-weight:700;letter-spacing:.04em;line-height:1.65}
.rt2-page summary{font-size:16.5px;font-weight:700;color:var(--navy);letter-spacing:.03em;line-height:1.6}
.rt2-page .rt2-faq summary h3{display:inline;margin:0;font-size:inherit;font-weight:inherit;color:inherit;letter-spacing:inherit;line-height:inherit;font-family:inherit}

/* 章3 歯根端切除術: 3-step figure row (portrait rc-apico-*, ≤220px/col, stacks ≤800) */
.rt2-page .rt2-apico{display:grid;grid-template-columns:repeat(3,minmax(0,220px));gap:24px;margin-top:28px}
.rt2-page .rt2-apico figure{margin:0}
.rt2-page .rt2-apico img{width:100%;height:auto;display:block;border-radius:3px;border:1px solid #e3eaf2;background:#fff;box-shadow:0 1px 2px rgba(6,21,73,.06),0 8px 20px rgba(6,21,73,.05)}
.rt2-page .rt2-apico figcaption{margin-top:8px;font-size:12px;color:var(--ink-soft);display:flex;align-items:center;gap:7px}
@media(max-width:800px){
  .rt2-page .rt2-apico{grid-template-columns:1fr;gap:20px}
  .rt2-page .rt2-apico figure{width:min(220px,100%)}
}

/* ===== 尾藤SEO構造(2026-08-27)用の追加規則 ===== */
.rt2-page .rt2-sec{margin-top:clamp(88px,12vw,120px);padding-bottom:.1px}  /* 子margin塌出封じ=節間距の完全統一 */
.rt2-page #sec-about{margin-top:clamp(36px,5vw,56px)}  /* TOC直下の首節は詰める(甲方指摘8/29) */  /* 話題の大転換点 */
/* 峰谷: 浅蓝灰色带(全出血)。白13连発の贫血感を断つ */
.rt2-page .rt2-section--band{
  width:100vw;margin-left:calc(50% - 50vw);
  background:var(--paper-soft);
  padding:64px 0;  /* 帯内の呼吸=64px(甲方実証: この距離感が心地よい) */
}
/* 転化の孤立强调(von Restorff): 他院で抜歯セクション */
.rt2-page .rt2-so-card{
  background:#fff;border-left:4px solid var(--orange);border-radius:0 3px 3px 0;
  padding:32px 36px;box-shadow:inset 0 1px 0 rgba(255,255,255,.7),var(--shadow-c),var(--shadow-a);
}
/* 章内アンカー(TOC) */
.rt2-page .rt2-toc{
  display:flex;gap:8px 22px;flex-wrap:wrap;justify-content:center;
  padding:16px 24px;border-bottom:1px solid var(--line);
}
.rt2-page .rt2-toc a{
  font-size:13px;letter-spacing:.04em;color:var(--ink-soft);text-decoration:none;
  padding:4px 2px;border-bottom:2px solid transparent;
  transition:color 200ms var(--ease-hover),border-color 200ms var(--ease-hover);
}
.rt2-page .rt2-toc a:hover{color:var(--navy-deep);border-bottom-color:var(--blue)}
/* 安心の呼び出し枠 */
.rt2-page .rt2-callout{
  background:var(--paper-soft);border-left:3px solid var(--blue);border-radius:0 3px 3px 0;
  padding:18px 22px;margin:20px 0;max-width:36em;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.7);
}
.rt2-page .rt2-callout p{margin:0;max-width:none}
.rt2-page .rt2-section--band .rt2-callout{background:#fff}
.rt2-page .rt2-checklist{list-style:none;margin:0 0 26px;padding:0;display:grid;gap:10px;max-width:34em}
.rt2-page .rt2-checklist li{position:relative;padding-left:28px;line-height:1.9}
.rt2-page .rt2-checklist li::before{content:"";position:absolute;left:2px;top:.62em;width:12px;height:7px;border-left:2px solid var(--blue);border-bottom:2px solid var(--blue);transform:rotate(-45deg)}
.rt2-page .rt2-tbd{border:1px dashed #c9a24b;background:#fdf9ef;color:#7a6428;font-size:13px;line-height:1.8;padding:10px 14px;border-radius:3px;margin:12px 0 0;max-width:34em}
.rt2-page .rt2-reasonlist{margin:0;padding-left:1.3em;max-width:34em}
.rt2-page .rt2-reasonlist li{line-height:1.9;margin-bottom:8px}


/* ===== 宿主網の源流ガード補足 (DL-150補遺6) =====
 * handa の編集器内容網(125選択子, !important)は style.css 側で
 * body.*:not(.hamille-design-raw) によりデザイン頁を源流除外済み。
 * かつての対抗層(クラス反復+!important競争)は撤去した — 簡単=低噪音(owner方針)。
 * ここに残るのは通常特異度の衛生規則のみ。 */