/* ============================================================
   カワス LP — A案: モダンSaaS・シャープ
   ライト基調+ディープインク反転(ヒーロー/最終CTA)。朱一色。
   ============================================================ */

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
img, svg { display: block; max-width: 100%; }
ul, ol { list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
summary { list-style: none; }
summary::-webkit-details-marker { display: none; }

/* ---------- Tokens ---------- */
:root {
  --ink-deep: #0d0f16;
  --ink-deep-2: #12151e;
  --ink: #1a1d26;
  --ink-2: #454956;
  /* --ink-3 / --ink-note は本文・注釈テキスト用。白/--paper-2/--paper-3/--shu-tint のいずれの
     背景でも WCAG 1.4.3 AA(4.5:1)を満たす値にしてある。
     --ink-4 は装飾専用(SVGアイコン・罫線・モック内部)。テキストには使わないこと。 */
  --ink-3: #5f636f;
  --ink-note: #686d7a;
  --ink-4: #9296a2;
  --paper: #ffffff;
  --paper-2: #f7f7f9;
  --paper-3: #f0f0f3;
  --line: #e6e7eb;
  --line-2: #d8d9df;
  --shu: #d9432f;
  --shu-deep: #c23a27;
  --shu-dark: #a83221;
  --shu-bright: #e96a57;   /* 朱の淡色(濃淡のみ・同色相) */
  --shu-tint: #fdf2f0;
  --shu-tint-2: #f7ddd8;
  --w-90: rgba(255,255,255,.92);
  --w-70: rgba(255,255,255,.72);
  --w-55: rgba(255,255,255,.55);
  --w-line: rgba(255,255,255,.09);
  --w-line-2: rgba(255,255,255,.16);
  --font-sans: "Inter", "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
  --ease: cubic-bezier(.22,.61,.36,1);
  --dur: 200ms;
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-xl: 20px;
  --header-h: 64px;
  --shadow-card: 0 1px 2px rgba(13,15,22,.04), 0 8px 24px rgba(13,15,22,.05);
  --shadow-lift: 0 2px 4px rgba(13,15,22,.06), 0 16px 40px rgba(13,15,22,.10);
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 20px);
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
  font-feature-settings: "palt" 1;
}

::selection { background: rgba(217,67,47,.22); }

:focus-visible {
  outline: 2px solid var(--shu);
  outline-offset: 3px;
  border-radius: 2px;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: clamp(20px, 4vw, 40px);
}
.container-narrow { max-width: 900px; }

.pc-only { display: inline; }
.sp-only { display: none; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 700;
  letter-spacing: .01em;
  border-radius: 10px;
  transition: background-color var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              color var(--dur) var(--ease),
              transform var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
  white-space: nowrap;
}
/* 背景は --shu(#D9432F)ではなく --shu-deep(#c23a27)を使う。
   白文字とのコントラストが 4.38:1 → 5.38:1 になり WCAG 1.4.3 AA を満たすため。
   朱の濃淡の範囲内なのでブランド規約(アクセントは朱一色)は保たれる。 */
.btn-primary {
  background: var(--shu-deep);
  color: #fff;
  box-shadow: 0 1px 2px rgba(168,50,33,.35), 0 6px 18px rgba(217,67,47,.22);
}
.btn-primary:hover {
  background: var(--shu-dark);
  transform: translateY(-1px);
  box-shadow: 0 2px 4px rgba(168,50,33,.35), 0 12px 28px rgba(217,67,47,.32);
}
.btn-primary:active { transform: translateY(0); box-shadow: 0 1px 2px rgba(168,50,33,.35); }
.btn-lg { padding: 17px 34px; font-size: 16px; border-radius: 12px; }
.btn-md { padding: 13px 26px; font-size: 14.5px; }
.btn-sm { padding: 9px 18px; font-size: 13.5px; }
.btn-block { width: 100%; }
.btn .btn-arrow { transition: transform var(--dur) var(--ease); }
.btn:hover .btn-arrow { transform: translateX(3px); }

.cta-micro {
  margin-top: 12px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--ink-3);
  letter-spacing: .02em;
}
.cta-micro-dark { color: var(--w-55); }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13,15,22,.86);
  -webkit-backdrop-filter: saturate(1.4) blur(14px);
  backdrop-filter: saturate(1.4) blur(14px);
  border-bottom: 1px solid var(--w-line);
  transition: box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled { box-shadow: 0 8px 32px rgba(13,15,22,.35); }
.header-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  height: var(--header-h);
}
.header-logo img { height: 30px; width: auto; }
.header-nav {
  display: flex;
  align-items: center;
  gap: 26px;
  margin-left: 8px;
}
.header-nav a {
  font-size: 13.5px;
  font-weight: 500;
  color: var(--w-70);
  letter-spacing: .02em;
  transition: color var(--dur) var(--ease);
}
.header-nav a:hover { color: #fff; }
.header-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-left: auto;
}
.header-login {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--w-70);
  transition: color var(--dur) var(--ease);
}
.header-login:hover { color: #fff; }

.menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  margin-left: auto;
  border-radius: 8px;
  position: relative;
}
.menu-btn span {
  position: absolute;
  left: 10px;
  right: 10px;
  height: 1.6px;
  background: #fff;
  border-radius: 2px;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.menu-btn span:nth-child(1) { top: 15px; }
.menu-btn span:nth-child(2) { top: 23px; }
.nav-open .menu-btn span:nth-child(1) { transform: translateY(4px) rotate(20deg); }
.nav-open .menu-btn span:nth-child(2) { transform: translateY(-4px) rotate(-20deg); }

.mobile-nav {
  display: none;
  border-top: 1px solid var(--w-line);
  background: var(--ink-deep);
}
.nav-open .mobile-nav { display: block; }
.mobile-nav-inner { padding: 12px 0 24px; display: grid; }
.mobile-nav a {
  padding: 13px 4px;
  font-size: 15px;
  font-weight: 600;
  color: var(--w-90);
  border-bottom: 1px solid var(--w-line);
}
.mobile-nav a:last-of-type { border-bottom: 0; }
.mobile-nav .btn { margin-top: 14px; }

/* ---------- ダークセクション共通 ---------- */
.dark-sec {
  position: relative;
  background: var(--ink-deep);
  color: var(--w-90);
  overflow: hidden;
}
.dark-sec::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--w-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--w-line) 1px, transparent 1px);
  background-size: 46px 46px;
  opacity: .5;
  -webkit-mask-image: radial-gradient(120% 90% at 50% 0%, #000 30%, transparent 90%);
  mask-image: radial-gradient(120% 90% at 50% 0%, #000 30%, transparent 90%);
  pointer-events: none;
}
.dark-sec > .container { position: relative; z-index: 1; }

/* ---------- Hero ---------- */
.hero { border-bottom: 1px solid var(--w-line); }
.hero::after {
  content: "";
  position: absolute;
  top: -220px;
  right: -160px;
  width: 720px;
  height: 720px;
  background: radial-gradient(closest-side, rgba(217,67,47,.20), transparent 72%);
  pointer-events: none;
}
.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
  gap: clamp(40px, 5vw, 64px);
  align-items: center;
  padding-block: clamp(64px, 8vw, 112px) clamp(72px, 8vw, 120px);
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .14em;
  color: var(--w-70);
  border: 1px solid var(--w-line-2);
  background: rgba(255,255,255,.04);
  border-radius: 999px;
  padding: 7px 16px;
  margin-bottom: 28px;
}
.hero-eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--shu-bright);
  box-shadow: 0 0 10px rgba(233,106,87,.9);
}
.hero-title {
  /* 上限は「相手が署名したら、」(最長行)が hero-copy 列に1行で収まる値。
     これを上げると意図しない折り返しが増える。 */
  font-size: clamp(38px, 3.6vw + 20px, 68px);
  font-weight: 900;
  text-wrap: balance;
  line-height: 1.14;
  letter-spacing: -.032em;
  color: #fff;
  margin-bottom: 26px;
}
.hero-title .accent {
  color: var(--shu-bright);
  text-shadow: 0 0 44px rgba(217,67,47,.45);
}
.hero-lead {
  font-size: clamp(15px, 1.2vw, 17px);
  line-height: 2.05;
  color: var(--w-70);
  margin-bottom: 36px;
  max-width: 34em;
}
.hero-cta { margin-bottom: 36px; }
.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.hero-trust li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: .01em;
  color: var(--w-70);
  border: 1px solid var(--w-line-2);
  background: rgba(255,255,255,.035);
  border-radius: 999px;
  padding: 8px 15px;
}
.hero-trust li svg { color: var(--shu-bright); flex: none; }

/* ---------- Hero: 送信ウィザードのブラウザモック ---------- */
.hero-visual { position: relative; }
.mock-scene { position: relative; }

.browser {
  position: relative;
  background: #fff;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 14px;
  overflow: hidden;
  box-shadow:
    0 0 0 1px rgba(13,15,22,.6),
    0 30px 90px rgba(0,0,0,.55),
    0 8px 28px rgba(0,0,0,.4);
}
.browser-bar {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 9px 14px;
  background: #f4f4f6;
  border-bottom: 1px solid var(--line);
}
.b-dots { display: flex; gap: 6px; }
.b-dots i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #d9dade;
}
.browser-url {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 500;
  color: var(--ink-3);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 4px 12px;
}
.browser-url svg { color: var(--ink-4); }

.app-top {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  border-bottom: 1px solid #ececef;
  background: #fff;
}
.app-top > img { width: 22px; height: 22px; }
.app-steps {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: auto;
}
.app-steps li {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 10.5px;
  font-weight: 600;
  color: var(--ink-4);
  padding: 4px 8px;
  border-radius: 6px;
}
.app-steps li + li::before {
  content: "";
  width: 10px;
  height: 1px;
  background: var(--line-2);
  margin-right: 8px;
}
.app-steps i {
  display: inline-grid;
  place-items: center;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 8.5px;
  font-weight: 700;
  font-style: normal;
  border: 1px solid var(--line-2);
  color: var(--ink-4);
}
.app-steps .done { color: var(--ink-2); }
.app-steps .done i {
  background: var(--shu);
  border-color: var(--shu);
  color: #fff;
}
.app-steps .active {
  color: var(--shu-dark);
  background: var(--shu-tint);
}
.app-steps .active i {
  border-color: var(--shu);
  color: var(--shu);
  background: #fff;
}

.app-body {
  display: grid;
  grid-template-columns: 1.45fr 1fr;
}
.pdf-canvas {
  background: #edeef2;
  border-right: 1px solid #ececef;
  padding: 20px;
  display: flex;
  justify-content: center;
}
.pdf-page {
  width: 100%;
  max-width: 252px;
  background: #fff;
  border: 1px solid #e7e8ec;
  border-radius: 4px;
  box-shadow: 0 10px 28px rgba(13,15,22,.13);
  padding: 22px 20px;
}
.pdf-title {
  text-align: center;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--ink);
  margin-bottom: 14px;
}
.pdf-line {
  display: block;
  height: 5px;
  border-radius: 3px;
  background: #e9eaee;
  margin: 8px 0;
}
.w-92 { width: 92%; } .w-90 { width: 90%; } .w-86 { width: 86%; }
.w-84 { width: 84%; } .w-60 { width: 60%; } .w-40 { width: 40%; }

.pdf-field {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 14px 0;
  padding: 10px 12px;
  border: 1.5px dashed var(--shu);
  border-radius: 6px;
  background: rgba(217,67,47,.06);
}
.pdf-field-tag {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .08em;
  color: #fff;
  background: var(--shu);
  border-radius: 3px;
  padding: 2px 7px;
}
.pdf-field-name {
  font-size: 11px;
  font-weight: 600;
  color: var(--ink);
}
.pdf-field .h {
  position: absolute;
  width: 7px;
  height: 7px;
  background: #fff;
  border: 1.5px solid var(--shu);
  border-radius: 2px;
}
.h1 { top: -4px; left: -4px; }
.h2 { top: -4px; right: -4px; }
.h3 { bottom: -4px; left: -4px; }
.h4 { bottom: -4px; right: -4px; }

.app-panel {
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 16px;
  background: #fff;
}
.panel-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--ink-4);
}
.panel-card {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid #ececef;
  border-radius: 9px;
  padding: 10px 12px;
}
.panel-avatar {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  flex: none;
  border-radius: 50%;
  background: var(--shu-tint);
  color: var(--shu-dark);
  font-size: 12px;
  font-weight: 800;
}
.panel-name { font-size: 12px; font-weight: 700; color: var(--ink); line-height: 1.35; }
.panel-mail {
  display: block;
  font-family: var(--font-mono);
  font-size: 9.5px;
  font-weight: 400;
  color: var(--ink-4);
}
.panel-field-icon {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  flex: none;
  border-radius: 8px;
  background: var(--shu-tint);
  color: var(--shu);
}
.panel-field-label { font-size: 11.5px; font-weight: 600; color: var(--ink-2); }
.mock-send {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  background: var(--shu);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  border-radius: 9px;
  padding: 12px;
  box-shadow: 0 4px 14px rgba(217,67,47,.3);
}
.panel-micro {
  text-align: center;
  font-size: 10px;
  font-weight: 500;
  color: var(--ink-4);
}

/* 相手のスマホ画面(浮かせる) */
.phone {
  position: absolute;
  right: -14px;
  bottom: -34px;
  width: 152px;
  background: #16181f;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 24px;
  padding: 6px;
  box-shadow: 0 26px 60px rgba(0,0,0,.6);
  z-index: 2;
}
.phone-screen {
  background: #fff;
  border-radius: 19px;
  overflow: hidden;
}
.mock-topbar {
  padding: 9px 10px 7px;
  border-bottom: 1px solid #ececef;
}
.mock-from {
  font-size: 8.5px;
  font-weight: 700;
  color: var(--ink-2);
}
.mock-doc { padding: 10px 11px 8px; }
.mock-doc-title {
  text-align: center;
  font-size: 8.5px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--ink);
  margin-bottom: 7px;
}
.mock-doc .pdf-line { height: 3px; margin: 4.5px 0; }
.mock-signrow {
  display: flex;
  align-items: center;
  gap: 7px;
  margin: 7px 0;
}
.mock-signfield {
  flex: 1;
  border: 1px dashed var(--shu);
  background: rgba(217,67,47,.06);
  border-radius: 4px;
  padding: 4px 6px;
}
.mock-signlabel {
  display: block;
  font-size: 6px;
  font-weight: 700;
  color: var(--shu-dark);
  letter-spacing: .1em;
}
.mock-signname { font-size: 8.5px; font-weight: 700; color: var(--ink); }
.mock-seal {
  display: grid;
  place-items: center;
  width: 27px;
  height: 27px;
  flex: none;
  border: 1.6px solid var(--shu);
  border-radius: 50%;
  color: var(--shu);
  transform: rotate(-6deg);
}
.mock-seal span {
  font-size: 8px;
  font-weight: 800;
  letter-spacing: .05em;
}
.mock-action {
  margin: 4px 9px 10px;
  background: var(--shu);
  color: #fff;
  text-align: center;
  font-size: 8.5px;
  font-weight: 700;
  border-radius: 6px;
  padding: 7px 4px;
}
.hero-visual-caption {
  margin-top: 48px;
  text-align: right;
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--w-55);
}

/* ---------- 数字の帯(ヒーロー直下) ---------- */
.stats { border-bottom: 1px solid var(--line); background: var(--paper); }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: var(--line);
  border-inline: 1px solid var(--line);
}
.stat {
  background: var(--paper);
  padding: clamp(26px, 3vw, 40px) clamp(18px, 2vw, 28px);
}
.stat-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--ink-3);
  margin-bottom: 10px;
}
.stat-value {
  display: block;
  font-weight: 800;
  font-size: clamp(30px, 2.6vw, 40px);
  line-height: 1.1;
  letter-spacing: -.035em;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.stat-value .sv-sm {
  font-size: .48em;
  font-weight: 700;
  letter-spacing: 0;
}
.stat-value.is-shu { color: var(--shu); }
.stat-note {
  display: block;
  margin-top: 10px;
  font-size: 11.5px;
  line-height: 1.65;
  color: var(--ink-note);
}

/* ---------- セクション共通 ---------- */
.section { padding-block: clamp(80px, 9vw, 128px); }
.section-alt { background: var(--paper-2); }
.section-head { margin-bottom: clamp(44px, 5vw, 64px); }
.section-eyebrow {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .24em;
  color: var(--ink-3);
  margin-bottom: 18px;
}
.section-eyebrow .num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--shu-dark);
}
.section-eyebrow::before {
  content: "";
  width: 22px;
  height: 1.5px;
  background: var(--shu);
}
.section-title {
  font-size: clamp(30px, 2.2vw + 14px, 46px);
  font-weight: 800;
  line-height: 1.32;
  letter-spacing: -.022em;
  color: var(--ink);
}
.section-close {
  margin-top: clamp(40px, 5vw, 56px);
  text-align: center;
  font-size: clamp(15px, 1.3vw, 17.5px);
  font-weight: 500;
  line-height: 2;
  color: var(--ink-2);
}
.section-cta {
  margin-top: clamp(36px, 4vw, 52px);
  text-align: center;
}

/* ---------- 02 紙とくらべる ---------- */
.compare {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(20px, 2.6vw, 32px);
  align-items: stretch;
}
.compare-vs {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--paper);
  border: 1px solid var(--line-2);
  box-shadow: var(--shadow-card);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .05em;
  color: var(--ink-3);
}
.compare-card {
  display: flex;
  flex-direction: column;
  border-radius: var(--r-lg);
  padding: clamp(28px, 3vw, 40px);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.compare-paper {
  background: var(--paper-2);
  border: 1px solid var(--line);
}
.compare-kawasu {
  position: relative;
  background: var(--paper);
  border: 1px solid rgba(217,67,47,.4);
  box-shadow: 0 2px 6px rgba(217,67,47,.05), 0 20px 48px rgba(217,67,47,.09);
  overflow: hidden;
}
.compare-kawasu::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--shu);
}
.compare-card:hover { transform: translateY(-3px); }
.compare-kawasu:hover { box-shadow: 0 4px 10px rgba(217,67,47,.07), 0 28px 60px rgba(217,67,47,.13); }
.compare-paper:hover { box-shadow: var(--shadow-lift); }
.compare-head {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--ink);
  margin-bottom: 24px;
}
.compare-paper .compare-head { color: var(--ink-2); }
.compare-head img { width: 24px; height: 24px; }
.compare-head svg { color: var(--ink-4); }
.compare-steps {
  counter-reset: cstep;
  display: grid;
  gap: 14px;
  margin-bottom: 28px;
}
.compare-steps li {
  counter-increment: cstep;
  position: relative;
  padding-left: 40px;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.75;
  color: var(--ink-2);
}
.compare-steps li::before {
  content: counter(cstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 700;
  border: 1px solid var(--line-2);
  color: var(--ink-3);
  background: var(--paper);
}
.compare-kawasu .compare-steps li { color: var(--ink); }
.compare-kawasu .compare-steps li::before {
  border-color: var(--shu-tint-2);
  background: var(--shu-tint);
  color: var(--shu-dark);
}
.compare-foot {
  margin-top: auto;
  border-top: 1px solid var(--line);
  padding-top: 22px;
}
.compare-kawasu .compare-foot { border-top-color: var(--shu-tint-2); }
.compare-stat {
  display: block;
  font-size: clamp(22px, 2vw, 28px);
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--ink-2);
  font-variant-numeric: tabular-nums;
}
.compare-kawasu .compare-stat { color: var(--shu); }
.compare-note {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: var(--ink-3);
}

/* ---------- 03 つかいかた ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(18px, 2.4vw, 28px);
}
.step {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: clamp(28px, 3vw, 38px) clamp(24px, 2.6vw, 32px);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.step:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lift);
  border-color: var(--line-2);
}
.step-main {
  border-color: rgba(217,67,47,.4);
  box-shadow: 0 2px 6px rgba(217,67,47,.05), 0 16px 40px rgba(217,67,47,.08);
}
.step-main::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--shu);
  border-radius: var(--r-lg) var(--r-lg) 0 0;
}
.step-main:hover { box-shadow: 0 4px 10px rgba(217,67,47,.07), 0 24px 52px rgba(217,67,47,.12); }
.step-num {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--shu-dark);
  margin-bottom: 20px;
}
.step-num::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}
.step-title {
  font-size: clamp(18px, 1.5vw, 21px);
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--ink);
  margin-bottom: 12px;
}
.step-body {
  font-size: 14.5px;
  line-height: 1.95;
  color: var(--ink-2);
}

/* ---------- 04 料金 ---------- */
.price-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-card);
  padding: clamp(36px, 5vw, 64px) clamp(24px, 5vw, 64px);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.price-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--shu);
}
.price-when {
  display: inline-block;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--shu-dark);
  background: var(--shu-tint);
  border: 1px solid var(--shu-tint-2);
  border-radius: 999px;
  padding: 7px 20px;
  margin-bottom: 18px;
}
.price-figure {
  font-weight: 800;
  font-size: clamp(76px, 10vw, 124px);
  line-height: 1;
  letter-spacing: -.05em;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.price-yen {
  font-size: .42em;
  font-weight: 800;
  vertical-align: .5em;
  margin-right: .06em;
  color: var(--shu);
}
.price-unit {
  font-size: .16em;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--ink-3);
  margin-left: .4em;
}
.price-free {
  margin-top: 14px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}
.price-zero {
  margin: 36px auto 0;
  max-width: 560px;
  text-align: left;
  border-top: 1px solid var(--line);
}
.price-zero li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  padding: 15px 4px;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
  color: var(--ink-2);
}
.price-zero strong {
  font-size: 16px;
  font-weight: 800;
  color: var(--ink);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.price-zero strong small {
  font-size: 11.5px;
  font-weight: 500;
  color: var(--ink-3);
  margin-left: 4px;
}
.price-cta { margin-top: 36px; min-width: min(340px, 100%); }
.price-notes {
  margin: 28px auto 0;
  max-width: 560px;
  text-align: left;
  display: grid;
  gap: 8px;
}
.price-notes li {
  position: relative;
  padding-left: 18px;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--ink-3);
}
.price-notes li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .8em;
  width: 8px;
  height: 1.5px;
  background: var(--line-2);
}

/* ---------- 05 安心の仕組み ---------- */
.trust-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.trust-item {
  grid-column: span 2;
  background: var(--paper);
  padding: clamp(28px, 3vw, 40px) clamp(24px, 2.6vw, 36px);
  transition: background-color var(--dur) var(--ease);
}
.trust-item:nth-child(4),
.trust-item:nth-child(5) { grid-column: span 3; }
.trust-item:hover { background: #fdfaf9; }
.trust-icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--shu-tint);
  border: 1px solid var(--shu-tint-2);
  color: var(--shu);
  margin-bottom: 22px;
}
.trust-head {
  font-size: 16.5px;
  font-weight: 800;
  letter-spacing: -.005em;
  line-height: 1.55;
  color: var(--ink);
  margin-bottom: 12px;
}
.trust-body {
  font-size: 13.8px;
  line-height: 1.95;
  color: var(--ink-2);
}
.trust-body small {
  display: block;
  margin-top: 8px;
  font-size: 11.5px;
  line-height: 1.7;
  color: var(--ink-note);
}

/* ---------- 06 大切なお断り ---------- */
.honesty-lead {
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 2.05;
  color: var(--ink-2);
  margin-bottom: 36px;
  max-width: 42em;
}
.honesty-cols {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: clamp(18px, 2.4vw, 28px);
}
.honesty-col {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: clamp(26px, 3vw, 36px);
}
.honesty-head {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}
.honesty-head svg { color: var(--shu); flex: none; }
.honesty-body {
  font-size: 14.5px;
  line-height: 2;
  color: var(--ink-2);
}
.honesty-list { display: grid; gap: 12px; }
.honesty-list li {
  position: relative;
  padding-left: 26px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--ink-2);
}
.honesty-list li svg {
  position: absolute;
  left: 0;
  top: .42em;
  color: var(--ink-4);
}
.honesty-company {
  margin-top: 32px;
  font-size: 13.5px;
  color: var(--ink-3);
}
.honesty-company a {
  color: var(--ink-2);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--line-2);
  transition: color var(--dur) var(--ease), text-decoration-color var(--dur) var(--ease);
}
.honesty-company a:hover { color: var(--shu-dark); text-decoration-color: var(--shu); }

/* ---------- 07 FAQ ---------- */
.faq-list {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 6px clamp(20px, 3vw, 36px);
  box-shadow: var(--shadow-card);
}
.faq { border-bottom: 1px solid var(--line); }
.faq:last-child { border-bottom: 0; }
.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 21px 2px;
  font-size: clamp(15px, 1.3vw, 16.5px);
  font-weight: 700;
  letter-spacing: -.005em;
  color: var(--ink);
  cursor: pointer;
  transition: color var(--dur) var(--ease);
}
.faq summary:hover { color: var(--shu-dark); }
.faq-marker {
  flex: none;
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 8px;
  border: 1px solid var(--line-2);
  color: var(--ink-3);
  transition: transform var(--dur) var(--ease), background-color var(--dur) var(--ease),
              border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.faq summary:hover .faq-marker { border-color: var(--shu); color: var(--shu); }
.faq[open] .faq-marker {
  transform: rotate(45deg);
  background: var(--shu);
  border-color: var(--shu);
  color: #fff;
}
.faq p {
  padding: 2px 2px 24px;
  font-size: 14.5px;
  line-height: 2;
  color: var(--ink-2);
  max-width: 46em;
}

/* ---------- 08 最終CTA ---------- */
.closing { border-top: 1px solid var(--w-line); }
.closing::after {
  content: "";
  position: absolute;
  bottom: -260px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 620px;
  background: radial-gradient(closest-side, rgba(217,67,47,.22), transparent 72%);
  pointer-events: none;
}
.closing-inner {
  padding-block: clamp(96px, 11vw, 160px);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.closing-logo { height: 54px; width: auto; margin-bottom: 36px; }
.closing-title {
  font-size: clamp(52px, 8vw, 112px);
  font-weight: 900;
  letter-spacing: -.03em;
  line-height: 1.1;
  color: #fff;
  margin-bottom: 20px;
}
.closing-lead {
  font-size: clamp(16px, 1.4vw, 19px);
  color: var(--w-70);
  margin-bottom: 44px;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--ink-deep);
  color: var(--w-70);
  border-top: 1px solid var(--w-line);
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: clamp(32px, 4vw, 56px);
  padding-block: clamp(56px, 6vw, 80px) 48px;
}
.footer-brand img { height: 34px; width: auto; margin-bottom: 20px; }
.footer-tagline {
  font-size: 13px;
  line-height: 2;
  color: var(--w-55);
  max-width: 30em;
}
.footer-head {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--w-55);
  margin-bottom: 18px;
}
.footer-col ul { display: grid; gap: 11px; }
.footer-col a {
  font-size: 13.5px;
  font-weight: 500;
  color: var(--w-70);
  transition: color var(--dur) var(--ease);
}
.footer-col a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid var(--w-line);
  padding-block: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-copy {
  font-size: 12.5px;
  color: var(--w-55);
}
.footer-note {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--w-55);
}

/* ---------- モバイル固定CTA ---------- */
.sticky-cta {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 90;
  padding: 12px 16px calc(12px + env(safe-area-inset-bottom, 0px));
  background: rgba(255,255,255,.92);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--line);
  box-shadow: 0 -8px 32px rgba(13,15,22,.1);
  transform: translateY(110%);
  transition: transform 280ms var(--ease);
}
.sticky-cta.is-visible { transform: translateY(0); }
@media (min-width: 768px) { .sticky-cta { display: none; } }
/* 固定CTAが出る幅では、その高さぶん本文の下に逃げを作る(表示条件と一致させる) */
@media (max-width: 767.98px) { body { padding-bottom: 76px; } }

/* ============================================================
   追加コンポーネント(コンテンツ設計v1.1)
   ============================================================ */

/* ---------- 汎用 ---------- */
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}
.t-shu { color: var(--shu); }

/* キーボード操作でヘッダーを飛ばして本文へ */
.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 200;
  /* --shu(#d9432f)は14px boldで4.38:1(WCAG AA 4.5:1未達)のため --shu-deep を使う */
  background: var(--shu-deep);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  padding: 12px 20px;
  border-radius: 0 0 var(--r-sm) var(--r-sm);
  transition: top var(--dur) var(--ease);
}
.skip-link:focus-visible { top: 0; }

/* FAQ: 質問文を見出しにしつつ、見た目は summary のままに保つ */
.faq-q {
  display: inline;
  font: inherit;
  color: inherit;
  letter-spacing: inherit;
}

/* 比較表の横スクロールヒント。表示条件は Responsive セクション側で指定する
   (根拠: container の内容幅 0.92×viewport が .cmp の min-width を下回る幅) */
.cmp-hint { display: none; }
.section-desc {
  margin-top: 20px;
  font-size: clamp(14.5px, 1.1vw, 16px);
  line-height: 2.05;
  color: var(--ink-2);
  max-width: 62ch;
}

/* 画像プレースホルダ(生成画像が入るまでの枠) */
.ph {
  position: relative;
  width: 100%;
  border-radius: var(--r-md);
  border: 1px dashed var(--line-2);
  background: repeating-linear-gradient(135deg, var(--paper-3) 0 9px, var(--paper-2) 9px 18px);
  display: grid;
  place-items: center;
}
/* data-ph はファイル名の開発参考用(差し替え先の目印)。訪問者には出さない —
   content: attr(data-ph) で描画すると本番未差し替え時にファイル名が見えてしまう事故になるため、
   常に固定文言のみを表示する */
.ph::after {
  content: "画像準備中";
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .03em;
  color: var(--ink-4);
  background: rgba(255,255,255,.92);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 5px 10px;
}
.ph-3x2 { aspect-ratio: 3 / 2; }

/* ---------- 01 悩み実況 ---------- */
.problem-layout {
  display: grid;
  grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}
.problems { display: grid; gap: 14px; }
.problem {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 20px 24px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 3px solid var(--line-2);
  border-radius: var(--r-md);
  font-size: clamp(14.5px, 1.05vw, 16px);
  line-height: 1.95;
  color: var(--ink-2);
  transition: border-left-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.problem:hover {
  border-left-color: var(--shu);
  box-shadow: var(--shadow-card);
}
.problem b { color: var(--ink); font-weight: 700; }
.problem-mark {
  flex: none;
  width: 20px;
  height: 20px;
  margin-top: 5px;
  border-radius: 50%;
  border: 1.5px solid var(--line-2);
  position: relative;
}
.problem-mark::before,
.problem-mark::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  width: 9px;
  height: 1.5px;
  background: var(--ink-4);
}
.problem-mark::before { transform: rotate(45deg); }
.problem-mark::after { transform: rotate(-45deg); }
.problem:hover .problem-mark { border-color: var(--shu); }
.problem:hover .problem-mark::before,
.problem:hover .problem-mark::after { background: var(--shu); }

/* ---------- 03 つかいかた: 受け取る側の体験 ---------- */
.receiver {
  margin-top: clamp(52px, 6vw, 76px);
  padding-top: clamp(44px, 5vw, 60px);
  border-top: 1px solid var(--line);
}
.receiver-top {
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
  gap: clamp(28px, 4vw, 52px);
  align-items: center;
  margin-bottom: clamp(36px, 4vw, 52px);
}
.receiver-title {
  font-size: clamp(22px, 1.6vw + 12px, 30px);
  font-weight: 800;
  letter-spacing: -.018em;
  line-height: 1.45;
  color: var(--ink);
  margin-bottom: 16px;
}
.receiver-lead {
  font-size: 15px;
  line-height: 2.05;
  color: var(--ink-2);
}
.receiver-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}
.receiver-facts li {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink-3);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 15px;
}
.receiver-facts b {
  color: var(--shu-dark);
  font-weight: 800;
  margin-left: 5px;
}
/* 本番送信の前にリハーサルできることの案内(この層の最大の障壁への回答) */
.receiver-try {
  margin-top: 20px;
  padding: 16px 20px;
  background: var(--shu-tint);
  border-left: 3px solid var(--shu);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  font-size: 14px;
  line-height: 1.95;
  color: var(--ink-2);
}

.recv-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}
.recv {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 16px 16px 20px;
  box-shadow: var(--shadow-card);
}
.recv-mock {
  height: 132px;
  border-radius: var(--r-sm);
  background: var(--paper-2);
  border: 1px solid var(--line);
  padding: 12px;
  margin-bottom: 16px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.rm-mail { display: grid; gap: 7px; }
.rm-from {
  font-size: 10.5px;
  font-weight: 700;
  color: var(--ink-2);
}
.rm-subj {
  font-size: 11px;
  color: var(--ink-3);
  line-height: 1.6;
  padding-bottom: 9px;
  border-bottom: 1px solid var(--line);
}
.rm-btn {
  align-self: start;
  font-size: 10.5px;
  font-weight: 700;
  color: #fff;
  background: var(--shu);
  border-radius: 6px;
  padding: 7px 13px;
}
.rm-doc {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 12px 12px 14px;
}
.rm-doc-title {
  display: block;
  text-align: center;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--ink);
  margin-bottom: 10px;
}
.rm-sign {
  display: flex;
  align-items: center;
  gap: 10px;
}
.rm-field {
  flex: 1;
  border: 1.4px dashed rgba(217,67,47,.55);
  background: var(--shu-tint);
  border-radius: 6px;
  padding: 9px 11px;
}
.rm-field-tag {
  display: block;
  font-size: 8.5px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--shu);
  margin-bottom: 3px;
}
.rm-field-name {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--ink);
}
.rm-seal {
  flex: none;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 2px solid var(--shu);
  color: var(--shu);
  display: grid;
  place-items: center;
}
.rm-seal span {
  font-size: 13px;
  font-weight: 700;
  writing-mode: vertical-rl;
  line-height: 1;
  letter-spacing: .04em;
}
.rm-done {
  display: grid;
  place-items: center;
  gap: 10px;
  text-align: center;
}
.rm-check { color: var(--shu); }
.rm-done-text {
  font-size: 11.5px;
  font-weight: 700;
  color: var(--ink-2);
}
.recv-cap {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 6px;
}
.recv-n {
  flex: none;
  display: grid;
  place-items: center;
  width: 21px;
  height: 21px;
  border-radius: 50%;
  background: var(--ink);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 700;
}
.recv-note {
  font-size: 12.5px;
  line-height: 1.85;
  color: var(--ink-3);
}

/* ---------- 04 他社とくらべる ---------- */
.cmp-wrap { position: relative; }
.cmp-hint {
  font-size: 11.5px;
  color: var(--ink-note);
  text-align: center;
  margin-bottom: 10px;
  letter-spacing: .04em;
}
.cmp-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: var(--paper);
}
.cmp {
  width: 100%;
  /* 行見出し列は sticky にしない: 不透明な sticky 列がスクロール時にカワス列を覆い、
     thead の角セルとの左端もズレるため。代わりに表全体を詰めて横スクロール量を減らす。 */
  min-width: 640px;
  border-collapse: collapse;
  font-size: 14px;
}
.cmp th,
.cmp td {
  padding: 16px 18px;
  text-align: left;
  vertical-align: middle;
  border-bottom: 1px solid var(--line);
}
.cmp thead th {
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-2);
  background: var(--paper-2);
  border-bottom: 1px solid var(--line-2);
  vertical-align: bottom;
  line-height: 1.5;
}
.cmp thead th small {
  display: block;
  font-size: 11px;
  font-weight: 500;
  color: var(--ink-note);
  margin-top: 4px;
}
.cmp tbody th {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--ink-2);
  background: var(--paper);
  min-width: 168px;
  border-right: 1px solid var(--line);
}
.cmp tbody th small {
  display: block;
  font-size: 11px;
  font-weight: 500;
  color: var(--ink-note);
}
.cmp tbody td {
  color: var(--ink-3);
  font-weight: 500;
}
.cmp td small { font-size: 11.5px; color: var(--ink-note); }
.cmp tbody tr:last-child th,
.cmp tbody tr:last-child td { border-bottom: 0; }

/* カワス列の強調 */
.cmp .cmp-us {
  background: var(--shu-tint);
  border-left: 2px solid var(--shu);
  border-right: 2px solid var(--shu);
  color: var(--ink);
  min-width: 150px;
}
.cmp thead .cmp-us {
  border-top: 2px solid var(--shu);
  border-radius: var(--r-sm) var(--r-sm) 0 0;
}
.cmp tbody tr:last-child .cmp-us {
  border-bottom: 2px solid var(--shu);
  border-radius: 0 0 var(--r-sm) var(--r-sm);
}
.cmp-brand {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 14.5px;
  font-weight: 800;
  color: var(--shu-dark);
}
.cmp-strong {
  font-size: 19px;
  font-weight: 800;
  color: var(--shu-dark);
  letter-spacing: -.01em;
}
.cmp .cmp-rowhead { background: var(--paper-2); border-right: 1px solid var(--line); }
/* .cmp tbody th (0,1,2) に負けないよう詳細度を揃える。
   カワス列は さらに上の詳細度で朱ティントを維持する。 */
.cmp tbody .cmp-hero-row th,
.cmp tbody .cmp-hero-row td {
  background: var(--paper-3);
  padding-block: 20px;
}
.cmp tbody .cmp-hero-row .cmp-us { background: var(--shu-tint-2); }
.cmp tbody .cmp-hero-row th { font-size: 14.5px; color: var(--ink); }

.cmp-notes {
  margin-top: 20px;
  display: grid;
  gap: 7px;
}
.cmp-notes li {
  position: relative;
  padding-left: 17px;
  font-size: 12.5px;
  line-height: 1.85;
  color: var(--ink-note);
}
.cmp-notes li::before {
  content: "※";
  position: absolute;
  left: 0;
}
.cmp-notes a {
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ---------- 06 取引先への案内文例 ---------- */
.letter {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}
.letter-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 20px;
  background: var(--paper-2);
  border-bottom: 1px solid var(--line);
}
.letter-label {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--ink-3);
}
.letter-copy {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--ink-2);
  background: var(--paper);
  border: 1px solid var(--line-2);
  border-radius: 8px;
  padding: 8px 14px;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.letter-copy:hover {
  border-color: var(--shu);
  color: var(--shu-dark);
}
.letter-copy.is-copied {
  border-color: var(--shu);
  background: var(--shu-tint);
  color: var(--shu-dark);
}
.letter-body {
  padding: clamp(24px, 3vw, 36px) clamp(20px, 3vw, 36px);
  font-size: clamp(14px, 1.05vw, 15.5px);
  line-height: 2.15;
  color: var(--ink-2);
}
.letter-body p + p { margin-top: 1.1em; }

/* ---------- 08 ユースケース ---------- */
.usecases {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}
.usecase {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.usecase:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lift);
}
.usecase-visual { border-bottom: 1px solid var(--line); }
.usecase-visual .ph { border: 0; border-radius: 0; }
.usecase-visual img { width: 100%; height: auto; }
.usecase-body { padding: 20px 22px 24px; }
.usecase-title {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--ink);
  margin-bottom: 9px;
  padding-left: 13px;
  position: relative;
}
.usecase-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: .28em;
  bottom: .28em;
  width: 3px;
  border-radius: 2px;
  background: var(--shu);
}
.usecase-text {
  font-size: 13.5px;
  line-height: 1.95;
  color: var(--ink-3);
}

/* ---------- 11 電子契約とは ---------- */
.about-list {
  display: grid;
  gap: 18px;
  counter-reset: about;
}
.about-item {
  counter-increment: about;
  position: relative;
  padding: 26px 28px 26px 74px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
}
.about-item::before {
  content: counter(about, decimal-leading-zero);
  position: absolute;
  left: 26px;
  top: 27px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--shu-dark);
  letter-spacing: .04em;
}
.about-head {
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -.012em;
  color: var(--ink);
  margin-bottom: 10px;
}
.about-body {
  font-size: 14.5px;
  line-height: 2.05;
  color: var(--ink-2);
}
.about-body b { font-weight: 700; color: var(--ink); }
.about-body small { font-size: 12px; color: var(--ink-note); }

.about-extra {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-top: 22px;
}
.about-extra-item {
  padding: 22px 24px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
}
.about-extra-head {
  font-size: 14.5px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 7px;
}
.about-extra-body {
  font-size: 13px;
  line-height: 1.95;
  color: var(--ink-3);
}

/* ---------- Reveal(html.js ゲート方式) ---------- */
.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 640ms var(--ease), transform 640ms var(--ease);
  transition-delay: var(--rd, 0s);
}
.js .reveal.is-inview {
  opacity: 1;
  transform: none;
}
/* script.js の読み込み失敗時のフェイルセーフ(単一障害点対策): 2.5秒経っても
   IntersectionObserverが動いていなければ、本文を隠したままにしない */
.reveal-fallback .reveal {
  opacity: 1;
  transform: none;
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .js .reveal { opacity: 1; transform: none; transition: none; }
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1100px) {
  .stats-grid { grid-template-columns: repeat(6, 1fr); }
  .stat { grid-column: span 2; }
  .stat:nth-child(4), .stat:nth-child(5) { grid-column: span 3; }
}

@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 64px;
    padding-block: 64px 88px;
  }
  .hero-lead br { display: none; }
  .hero-visual { max-width: 640px; margin-inline: auto; width: 100%; }
  .trust-item { grid-column: span 3 !important; }
  .trust-item:nth-child(5) { grid-column: span 6 !important; }
}

@media (max-width: 1024px) {
  /* ヘッダーは 880px より早く畳む。CTA文言を「メールアドレスだけで始める」に統一した結果、
     880〜1024px 帯でロゴ+ナビ5項目+ログイン+ボタンが横溢するため。 */
  .header-nav, .header-actions .header-login { display: none; }
  .menu-btn { display: block; }
  .header-actions { margin-left: 0; }
}

/* .cmp の min-width(640px)を内容幅 0.92×viewport が下回る幅で出す。
   min-width を変えたらこの値も追随させること。 */
@media (max-width: 695px) {
  .cmp-hint { display: block; }
}

@media (max-width: 880px) {
  .compare { grid-template-columns: 1fr; }
  .compare-vs { display: none; }
  .steps { grid-template-columns: 1fr; }
  .honesty-cols { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  /* 追加コンポーネント(コンテンツ設計v1.1)のレスポンシブ */
  .usecases, .recv-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .problem-layout, .receiver-top { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .usecases, .recv-steps, .about-extra { grid-template-columns: 1fr; }
  .trust-grid { grid-template-columns: 1fr; }
  .trust-item,
  .trust-item:nth-child(4),
  .trust-item:nth-child(5) { grid-column: 1 / -1 !important; }
  /* 比較表を詰めて、初期表示でも「カワス+比較相手1社」が同時に視野に入るようにする。
     この表の説得力は ¥11,760 と他社の並置に依存しているため。 */
  .cmp { min-width: 560px; }
  .cmp th, .cmp td { padding: 13px 12px; }
  .cmp tbody th { min-width: 128px; }
  .cmp .cmp-us { min-width: 112px; }
  /* 確定CTA文言は長いため、小画面ではヘッダーから畳む。
     ヒーロー内CTA → 下部固定CTA が途切れなく出るので導線は落ちない。 */
  .header-actions { display: none; }
  .pc-only { display: none; }
  .sp-only { display: inline; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat { grid-column: auto !important; }
  .stat:nth-child(5) { grid-column: 1 / -1 !important; }
  .hero-trust { flex-direction: column; align-items: flex-start; }
  .app-body { grid-template-columns: 1.25fr 1fr; }
  .pdf-canvas { padding: 14px; }
  .app-panel { padding: 12px; }
  .phone { width: 128px; right: -6px; bottom: -28px; }
  .hero-visual-caption { text-align: center; margin-top: 44px; }
  .price-zero li { flex-direction: column; align-items: flex-start; gap: 2px; }
  .footer-inner { grid-template-columns: 1fr; gap: 36px; }
}

@media (max-width: 460px) {
  .app-steps li { padding: 4px 4px; }
  .app-steps li + li::before { width: 6px; margin-right: 5px; }
  .app-body { grid-template-columns: 1fr; }
  .pdf-canvas { border-right: 0; border-bottom: 1px solid #ececef; }
  .btn-lg { width: 100%; padding: 16px 20px; }
}