:root {
  --aqua: #14b8a6;
  --aqua-dark: #0f8f87;
  --blue: #3b82f6;
  --blue-soft: #dbeafe;
  --mint: #d1fae5;
  --mint-soft: #ecfdf5;
  --coral: #fb7185;
  --coral-soft: #fff1f3;
  --navy: #1e293b;
  --deep: #0f1f35;
  --slate: #475569;
  --muted: #64748b;
  --faint: #94a3b8;
  --paper: #f8fafc;
  --surface: #fffffe;
  --line: #e2e8f0;
  --line-soft: #eef2f6;
  --shadow: 0 18px 50px rgba(15, 31, 53, 0.09);
  --shadow-soft: 0 8px 24px rgba(15, 31, 53, 0.07);
  --radius: 16px;
  --radius-sm: 10px;
  --container: min(1120px, calc(100vw - 40px));
  --round: "M PLUS Rounded 1c", "Noto Sans JP", sans-serif;
  --body: "Noto Sans JP", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--paper);
  color: var(--navy);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

body::selection {
  background: var(--mint);
  color: var(--deep);
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea {
  font: inherit;
}

img,
svg {
  display: block;
}

img {
  max-width: 100%;
}

svg {
  width: 1.25em;
  height: 1.25em;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: 12px;
  z-index: 1000;
  transform: translateY(-140%);
  border-radius: 999px;
  background: var(--deep);
  color: #f8fafc;
  padding: 10px 14px;
  font-weight: 700;
}

.skip-link:focus {
  transform: translateY(0);
}

.phrase {
  display: inline-block;
}

.site-header {
  position: fixed;
  inset: 16px 0 auto;
  z-index: 100;
  width: var(--container);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border: 1px solid rgba(226, 232, 240, 0.82);
  border-radius: 999px;
  background: rgba(255, 255, 254, 0.9);
  box-shadow: 0 10px 30px rgba(15, 31, 53, 0.08);
  padding: 8px 12px 8px 18px;
  backdrop-filter: blur(18px);
}

.brand {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
}

.brand-logo {
  width: 152px;
  height: 46px;
  object-fit: contain;
  object-position: left center;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  color: var(--slate);
  font-size: 14px;
  font-weight: 700;
  padding: 0 14px;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  background: var(--mint-soft);
  color: var(--aqua-dark);
}

.site-nav .nav-cta {
  background: var(--deep);
  color: #f8fafc;
}

.nav-toggle {
  display: none;
  min-width: 48px;
  min-height: 48px;
  border: 0;
  border-radius: 999px;
  background: var(--mint-soft);
  color: var(--deep);
  padding: 0;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  border-radius: 999px;
  background: currentColor;
}

.hero {
  position: relative;
  min-height: 92svh;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: center;
  overflow: hidden;
  padding: 128px max(20px, calc((100vw - 1120px) / 2)) 74px;
  background:
    linear-gradient(90deg, rgba(248, 250, 252, 0.99) 0%, rgba(248, 250, 252, 0.94) 44%, rgba(248, 250, 252, 0.42) 74%, rgba(248, 250, 252, 0.18) 100%),
    linear-gradient(145deg, rgba(59, 130, 246, 0.16) 0%, transparent 42%),
    url("assets/hero-pool-voice.png");
  background-position: center, center, 56% center;
  background-size: cover, cover, cover;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 150px;
  background: linear-gradient(0deg, var(--paper), rgba(248, 250, 252, 0));
  pointer-events: none;
}

.hero-lanes {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
  pointer-events: none;
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}

.hero-lanes::before {
  content: "";
  position: absolute;
  inset: -18% -10%;
  background:
    radial-gradient(ellipse at 28% 22%, rgba(255, 255, 255, 0.34), transparent 34%),
    radial-gradient(ellipse at 72% 70%, rgba(125, 211, 252, 0.2), transparent 38%),
    linear-gradient(108deg, transparent 0 35%, rgba(255, 255, 255, 0.2) 45%, transparent 58% 100%);
  mix-blend-mode: screen;
  opacity: 0.52;
  transform: translateX(-4%) skewY(-1deg);
  animation: water-shimmer 9s ease-in-out infinite;
}

.water-sheet {
  --sheet-angle: -2deg;
  position: absolute;
  left: -12%;
  right: -12%;
  height: 124px;
  border-radius: 999px 999px 0 0;
  background:
    radial-gradient(ellipse at 22% 18%, rgba(255, 255, 255, 0.58), transparent 28%),
    radial-gradient(ellipse at 74% 12%, rgba(255, 255, 255, 0.36), transparent 30%),
    linear-gradient(180deg, rgba(224, 242, 254, 0.52), rgba(20, 184, 166, 0.12) 58%, transparent);
  filter: blur(0.4px);
  opacity: 0.42;
  transform: rotate(var(--sheet-angle));
  animation: water-sheet-drift 12s ease-in-out infinite;
}

.water-sheet-a {
  bottom: 9%;
}

.water-sheet-b {
  --sheet-angle: 2deg;
  bottom: 22%;
  height: 92px;
  opacity: 0.24;
  animation-delay: -5s;
}

.stroke-ripple {
  position: absolute;
  width: 190px;
  height: 52px;
  border: 2px solid rgba(255, 255, 255, 0.7);
  border-left: 0;
  border-bottom: 0;
  border-radius: 100% 100% 0 0;
  opacity: 0;
  transform: rotate(-14deg) scale(0.72);
  animation: swim-stroke 5.6s ease-in-out infinite;
}

.stroke-ripple-a {
  left: 56%;
  top: 30%;
}

.stroke-ripple-b {
  left: 64%;
  top: 54%;
  animation-delay: -2.8s;
}

.bubble {
  position: absolute;
  width: 10px;
  height: 10px;
  border: 1px solid rgba(255, 255, 255, 0.86);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.24);
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.34);
  opacity: 0;
  animation: bubble-rise 6.8s ease-in infinite;
}

.bubble-a { left: 58%; bottom: 18%; width: 8px; height: 8px; }
.bubble-b { left: 64%; bottom: 12%; animation-delay: -1.4s; }
.bubble-c { left: 72%; bottom: 21%; width: 14px; height: 14px; animation-delay: -3.2s; }
.bubble-d { left: 82%; bottom: 14%; width: 7px; height: 7px; animation-delay: -4.6s; }

.hero-copy {
  position: relative;
  z-index: 2;
  max-width: 700px;
}

.eyebrow {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  margin: 0 0 12px;
  color: var(--aqua-dark);
  font-family: var(--round);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.16em;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 18px;
  font-family: var(--round);
  font-size: clamp(42px, 6.5vw, 78px);
  line-height: 1.18;
  letter-spacing: 0;
  color: var(--deep);
}

h2 {
  margin-bottom: 14px;
  font-family: var(--round);
  font-size: clamp(30px, 4.3vw, 52px);
  line-height: 1.3;
  letter-spacing: 0;
  color: var(--deep);
}

h3 {
  margin-bottom: 8px;
  font-family: var(--round);
  font-size: 20px;
  line-height: 1.42;
}

.hero-lead {
  max-width: 660px;
  margin-bottom: 28px;
  color: var(--slate);
  font-size: clamp(16px, 2.1vw, 19px);
  line-height: 1.9;
}

.hero-actions,
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 0 20px;
  font-weight: 800;
  line-height: 1.3;
  box-shadow: var(--shadow-soft);
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 14px 34px rgba(15, 31, 53, 0.12);
}

.button.primary {
  background: linear-gradient(135deg, var(--aqua), var(--aqua-dark));
  color: #f8fafc;
}

.button.secondary {
  border-color: var(--line);
  background: rgba(255, 255, 254, 0.84);
  color: var(--deep);
}

.hero-stats {
  margin: 30px 0 0;
}

.hero-stats div {
  min-width: 126px;
  border: 1px solid rgba(226, 232, 240, 0.82);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 254, 0.78);
  padding: 12px 14px;
  box-shadow: 0 8px 22px rgba(15, 31, 53, 0.06);
}

.hero-stats dt {
  font-family: var(--round);
  color: var(--aqua-dark);
  font-size: 24px;
  font-weight: 800;
  line-height: 1.1;
}

.hero-stats dd {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.hero-stage {
  position: absolute;
  z-index: 2;
  right: max(22px, calc((100vw - 1120px) / 2));
  bottom: 52px;
  width: min(47vw, 560px);
  min-height: 640px;
  pointer-events: none;
}

.mascot-note {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid rgba(167, 243, 208, 0.95);
  border-radius: 999px;
  background: rgba(255, 255, 254, 0.9);
  box-shadow: var(--shadow-soft);
  color: var(--deep);
  padding: 8px 14px 8px 8px;
  backdrop-filter: blur(14px);
}

.mascot-note img {
  width: 58px;
  height: 58px;
  border-radius: 18px;
  object-fit: cover;
  flex: 0 0 auto;
}

.mascot-note p {
  margin: 0;
  font-family: var(--round);
  font-size: 14px;
  font-weight: 800;
  line-height: 1.35;
}

.hero-mascot {
  position: absolute;
  z-index: 4;
  right: 26px;
  top: 8px;
  animation: mascot-bob 4.8s ease-in-out infinite;
}

.demo-card {
  position: absolute;
  left: 0;
  top: 84px;
  z-index: 3;
  width: min(330px, 64%);
  border: 1px solid rgba(167, 243, 208, 0.95);
  border-radius: var(--radius);
  background: rgba(255, 255, 254, 0.92);
  box-shadow: var(--shadow);
  padding: 18px;
  pointer-events: auto;
  backdrop-filter: blur(16px);
}

.demo-topline {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--aqua-dark);
  font-size: 13px;
  font-weight: 800;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--faint);
}

.demo-card.is-listening .status-dot {
  background: var(--coral);
  animation: pulse 1s ease-in-out infinite;
}

.demo-card.is-processing .status-dot {
  background: var(--blue);
  animation: pulse 0.8s ease-in-out infinite;
}

.demo-card.is-done .status-dot {
  background: var(--aqua);
}

.demo-time {
  margin-left: auto;
  color: var(--muted);
  font-family: var(--round);
}

.record-button {
  width: 100%;
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 14px;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--aqua), var(--aqua-dark));
  color: #f8fafc;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 14px 30px rgba(20, 184, 166, 0.24);
}

.waveform {
  display: flex;
  align-items: end;
  gap: 4px;
  height: 42px;
  margin: 16px 0;
}

.waveform span {
  width: 7px;
  height: 10px;
  border-radius: 999px;
  background: #5eead4;
  animation: wave 1.2s ease-in-out infinite;
  animation-play-state: paused;
}

.demo-card.is-listening .waveform span,
.demo-card.is-processing .waveform span {
  animation-play-state: running;
}

.waveform span:nth-child(2n) { height: 24px; animation-delay: 80ms; background: var(--aqua); }
.waveform span:nth-child(3n) { height: 34px; animation-delay: 160ms; }
.waveform span:nth-child(4n) { height: 18px; animation-delay: 240ms; }

.transcript {
  min-height: 94px;
  margin-bottom: 12px;
  border-radius: var(--radius-sm);
  background: #f8fafc;
  color: var(--slate);
  font-size: 13px;
  line-height: 1.7;
  padding: 12px;
}

.demo-progress {
  height: 7px;
  margin-bottom: 12px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--line-soft);
}

.demo-progress span {
  display: block;
  width: 12%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--aqua), var(--blue));
  transition: width 360ms ease;
}

.structured-note {
  display: grid;
  gap: 8px;
}

.note-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-radius: var(--radius-sm);
  background: var(--mint-soft);
  padding: 10px 12px;
  color: var(--aqua-dark);
  font-size: 12px;
  font-weight: 700;
  opacity: 0.32;
  transform: translateY(8px);
  transition: opacity 260ms ease, transform 260ms ease;
}

.demo-card.is-done .note-row {
  opacity: 1;
  transform: translateY(0);
}

.demo-card.is-done .note-row:nth-child(2) {
  transition-delay: 80ms;
}

.demo-card.is-done .note-row:nth-child(3) {
  transition-delay: 160ms;
}

.note-row strong {
  color: var(--deep);
  font-family: var(--round);
  text-align: right;
}

.phone-stack {
  position: absolute;
  right: 0;
  bottom: 0;
  width: min(360px, 64%);
  height: 620px;
}

.phone {
  position: absolute;
  width: 260px;
  margin: 0;
  border: 10px solid #111827;
  border-radius: 38px;
  background: #111827;
  box-shadow: 0 28px 64px rgba(15, 31, 53, 0.22);
  overflow: hidden;
}

.phone-main {
  right: 26px;
  bottom: 0;
  z-index: 2;
  transform: rotate(3deg);
}

.phone-back {
  left: 0;
  bottom: 78px;
  z-index: 1;
  opacity: 0.92;
  transform: rotate(-9deg) scale(0.86);
}

.phone-screen {
  min-height: 520px;
  display: grid;
  align-content: start;
  gap: 14px;
  border-radius: 26px;
  background:
    radial-gradient(circle at 20% 8%, rgba(209, 250, 229, 0.9), transparent 30%),
    linear-gradient(180deg, #fffffe 0%, #f8fafc 72%, #ecfdf5 100%);
  padding: 22px 16px;
}

.phone-screen-alt {
  background:
    radial-gradient(circle at 82% 16%, rgba(219, 234, 254, 0.95), transparent 34%),
    linear-gradient(180deg, #fffffe 0%, #f8fafc 82%);
}

.mock-status {
  display: grid;
  gap: 4px;
}

.mock-status span {
  color: var(--muted);
  font-size: 11px;
  font-weight: 800;
}

.mock-status strong {
  color: var(--deep);
  font-family: var(--round);
  font-size: 19px;
  line-height: 1.25;
}

.mock-record-panel {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--aqua), var(--aqua-dark));
  color: #f8fafc;
  padding: 16px;
  box-shadow: 0 18px 34px rgba(20, 184, 166, 0.24);
}

.mock-record-panel strong {
  display: block;
  font-size: 14px;
  line-height: 1.35;
}

.mock-record-panel small {
  display: block;
  margin-top: 4px;
  color: rgba(248, 250, 252, 0.82);
  font-size: 10px;
  font-weight: 800;
}

.mock-mic {
  width: 46px;
  height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: rgba(255, 255, 254, 0.18);
  color: #f8fafc;
}

.mock-list {
  display: grid;
  gap: 8px;
}

.mock-list span {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 254, 0.86);
  padding: 10px 12px;
  color: var(--slate);
  font-size: 12px;
  font-style: normal;
}

.mock-list b {
  color: var(--muted);
}

.mock-list em {
  color: var(--aqua-dark);
  font-family: var(--round);
  font-style: normal;
  font-weight: 800;
  text-align: right;
}

.mock-save,
.mock-delta {
  border-radius: 999px;
  background: var(--mint-soft);
  color: var(--aqua-dark);
  padding: 10px 12px;
  font-size: 12px;
  font-weight: 800;
  text-align: center;
}

.mock-chart {
  position: relative;
  height: 150px;
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(20, 184, 166, 0.12), transparent),
    repeating-linear-gradient(0deg, transparent 0 36px, rgba(226, 232, 240, 0.78) 36px 37px);
  overflow: hidden;
}

.mock-chart::before {
  content: "";
  position: absolute;
  left: 26px;
  right: 24px;
  top: 74px;
  height: 3px;
  border-radius: 999px;
  background: var(--aqua);
  transform: rotate(-10deg);
  transform-origin: left center;
}

.mock-chart span {
  position: absolute;
  width: 12px;
  height: 12px;
  border: 3px solid var(--aqua);
  border-radius: 999px;
  background: #fffffe;
}

.mock-chart span:nth-child(1) { left: 24px; top: 82px; }
.mock-chart span:nth-child(2) { left: 104px; top: 66px; }
.mock-chart span:nth-child(3) { right: 24px; top: 48px; }

.next-hint {
  position: absolute;
  left: 50%;
  bottom: 18px;
  z-index: 4;
  transform: translateX(-50%);
  color: var(--muted);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.section-pad {
  padding: 96px 0;
}

.section-heading,
.problem-grid,
.feature-grid,
.screen-row,
.trust-list,
.contact-shell,
.faq-list,
.final-inner,
.site-footer,
.voice-layout {
  width: var(--container);
  margin-inline: auto;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 36px;
}

.section-heading p:not(.eyebrow) {
  color: var(--slate);
  font-size: 17px;
}

.problem {
  background: linear-gradient(180deg, var(--paper), #fffffe 46%, var(--paper));
}

.problem-grid,
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.pain-card,
.feature-card,
.trust-item,
.screen-card,
.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}

.pain-card,
.feature-card,
.trust-item {
  padding: 24px;
}

.pain-card p,
.feature-card p,
.trust-item p {
  color: var(--slate);
}

.mini-icon,
.feature-icon {
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--mint-soft);
  color: var(--aqua-dark);
  margin-bottom: 18px;
}

.mini-icon.blue {
  background: #eff6ff;
  color: var(--blue);
}

.mini-icon.coral {
  background: var(--coral-soft);
  color: var(--coral);
}

.voice {
  position: relative;
  overflow: hidden;
  background: var(--deep);
  color: #f8fafc;
}

.voice::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(20, 184, 166, 0.2) 0 1px, transparent 1px 100%),
    linear-gradient(180deg, rgba(59, 130, 246, 0.12), transparent);
  background-size: 92px 100%, 100% 100%;
  opacity: 0.76;
}

.voice-layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(360px, 1fr);
  gap: 36px;
  align-items: center;
}

.voice .section-heading {
  width: auto;
  margin: 0;
}

.voice .section-heading h2,
.voice .section-heading p:not(.eyebrow) {
  color: #f8fafc;
}

.voice .eyebrow {
  color: #5eead4;
}

.voice-board {
  position: relative;
  display: grid;
  gap: 12px;
  padding: 10px 0;
}

.voice-step {
  min-height: 132px;
  border: 1px solid rgba(209, 250, 229, 0.18);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.08);
  padding: 20px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.voice-step.is-active {
  background: rgba(20, 184, 166, 0.18);
  border-color: rgba(94, 234, 212, 0.42);
}

.voice-step span {
  color: #5eead4;
  font-family: var(--round);
  font-size: 30px;
  font-weight: 800;
  line-height: 1;
}

.voice-step h3 {
  color: #f8fafc;
}

.voice-step p {
  margin-bottom: 0;
  color: rgba(248, 250, 252, 0.76);
}

.voice-mascot {
  position: absolute;
  right: -14px;
  bottom: -42px;
  width: 128px;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 28px;
  box-shadow: 0 20px 42px rgba(0, 0, 0, 0.24);
  animation: mascot-bob 4.8s ease-in-out infinite;
}

.features {
  background: #fffffe;
}

.feature-grid {
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.feature-card {
  grid-column: span 2;
}

.feature-card:nth-child(4),
.feature-card:nth-child(5),
.feature-card:nth-child(6) {
  background: linear-gradient(180deg, #fffffe, #f8fafc);
}

.screens {
  overflow: hidden;
  background: linear-gradient(180deg, var(--paper), var(--mint-soft));
}

.screen-row {
  display: grid;
  grid-template-columns: repeat(5, minmax(180px, 1fr));
  gap: 16px;
}

.screen-card {
  margin: 0;
  padding: 10px;
}

.screen-preview {
  position: relative;
  min-height: 320px;
  display: grid;
  align-content: start;
  gap: 12px;
  overflow: hidden;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, #fffffe 0%, #f8fafc 100%);
  padding: 18px;
}

.screen-preview::after {
  content: "";
  position: absolute;
  right: -42px;
  bottom: -42px;
  width: 140px;
  height: 140px;
  border-radius: 999px;
  background: rgba(20, 184, 166, 0.12);
}

.preview-kicker {
  color: var(--aqua-dark);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.14em;
}

.screen-preview strong {
  position: relative;
  z-index: 1;
  color: var(--deep);
  font-family: var(--round);
  font-size: 19px;
  line-height: 1.35;
}

.preview-hero-line,
.preview-card-line,
.preview-chip-row span,
.preview-progress,
.preview-chart {
  position: relative;
  z-index: 1;
  border-radius: 999px;
  background: var(--line-soft);
}

.preview-hero-line {
  height: 86px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--aqua), var(--blue));
}

.preview-chip-row {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.preview-chip-row span {
  height: 46px;
  background: var(--mint-soft);
}

.preview-card-line {
  width: 74%;
  height: 44px;
  border-radius: var(--radius-sm);
  background: #fffffe;
  border: 1px solid var(--line-soft);
}

.preview-card-line.wide {
  width: 100%;
}

.preview-mic {
  position: relative;
  z-index: 1;
  width: 76px;
  height: 76px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--aqua), var(--aqua-dark));
  box-shadow: 0 18px 34px rgba(20, 184, 166, 0.24);
}

.preview-mic::before {
  content: "";
  position: absolute;
  inset: 20px 27px 28px;
  border-radius: 999px;
  background: #fffffe;
}

.preview-mic::after {
  content: "";
  position: absolute;
  left: 36px;
  bottom: 18px;
  width: 4px;
  height: 14px;
  border-radius: 999px;
  background: #fffffe;
}

.preview-wave {
  display: flex;
  align-items: end;
  gap: 6px;
  height: 46px;
}

.preview-wave span {
  width: 10px;
  border-radius: 999px;
  background: #5eead4;
}

.preview-wave span:nth-child(1) { height: 18px; }
.preview-wave span:nth-child(2) { height: 38px; background: var(--aqua); }
.preview-wave span:nth-child(3) { height: 28px; }
.preview-wave span:nth-child(4) { height: 42px; background: var(--blue); }

.preview-time {
  position: relative;
  z-index: 1;
  color: var(--aqua-dark);
  font-family: var(--round);
  font-size: 44px;
  font-weight: 800;
  line-height: 1;
}

.preview-badge,
.preview-delta {
  position: relative;
  z-index: 1;
  width: fit-content;
  border-radius: 999px;
  background: var(--mint-soft);
  color: var(--aqua-dark);
  padding: 8px 12px;
  font-weight: 900;
}

.preview-progress {
  height: 14px;
  overflow: hidden;
}

.preview-progress span {
  display: block;
  width: 78%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--aqua), var(--blue));
}

.preview-chart {
  height: 118px;
  border-radius: var(--radius);
  background:
    linear-gradient(160deg, transparent 0 45%, rgba(20, 184, 166, 0.18) 45% 100%),
    repeating-linear-gradient(0deg, transparent 0 28px, rgba(226, 232, 240, 0.8) 28px 29px);
}

.screen-card figcaption {
  padding: 12px 4px 4px;
  color: var(--deep);
  font-family: var(--round);
  font-weight: 800;
  text-align: center;
}

.trust-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.trust-item {
  padding: 22px;
}

.trust-item strong {
  display: block;
  margin-bottom: 10px;
  font-family: var(--round);
  font-size: 18px;
}

.contact {
  background: linear-gradient(180deg, var(--paper), #fffffe);
}

.contact-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: start;
  border: 1px solid var(--line);
  border-radius: 22px;
  background:
    linear-gradient(135deg, rgba(209, 250, 229, 0.8), rgba(219, 234, 254, 0.72)),
    var(--surface);
  box-shadow: var(--shadow);
  padding: clamp(24px, 5vw, 46px);
}

.contact-copy p:not(.eyebrow) {
  max-width: 680px;
  color: var(--slate);
}

.contact-options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.contact-option {
  min-height: 72px;
  display: grid;
  align-content: center;
  border: 1px solid rgba(20, 184, 166, 0.22);
  border-radius: var(--radius);
  background: rgba(255, 255, 254, 0.86);
  padding: 14px 16px;
  transition: transform 180ms ease, border-color 180ms ease;
}

.contact-option:hover,
.contact-option:focus-visible {
  transform: translateY(-2px);
  border-color: var(--aqua);
}

.contact-option span {
  color: var(--deep);
  font-weight: 800;
}

.contact-option small {
  color: var(--muted);
  font-weight: 700;
}

.faq {
  background: #fffffe;
}

.faq-list {
  display: grid;
  gap: 10px;
  max-width: 860px;
}

.faq-item {
  overflow: hidden;
}

.faq-item button {
  width: 100%;
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border: 0;
  background: transparent;
  color: var(--deep);
  cursor: pointer;
  font-weight: 800;
  padding: 18px 20px;
  text-align: left;
}

.faq-item button i {
  position: relative;
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
}

.faq-item button i::before,
.faq-item button i::after {
  content: "";
  position: absolute;
  inset: 8px 0 auto;
  height: 2px;
  border-radius: 999px;
  background: var(--aqua);
}

.faq-item button i::after {
  transform: rotate(90deg);
  transition: transform 180ms ease;
}

.faq-item.open button i::after {
  transform: rotate(0deg);
}

.faq-item p {
  display: none;
  margin: 0;
  border-top: 1px solid var(--line-soft);
  color: var(--slate);
  padding: 0 20px 18px;
}

.faq-item.open p {
  display: block;
}

.final-cta {
  position: relative;
  overflow: hidden;
  background: var(--deep);
  color: #f8fafc;
  text-align: center;
}

.final-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 14% 30%, rgba(20, 184, 166, 0.22), transparent 32%),
    linear-gradient(90deg, rgba(20, 184, 166, 0.22) 0 1px, transparent 1px 100%);
  background-size: auto, 92px 100%;
  opacity: 0.74;
}

.final-mascot {
  position: absolute;
  right: max(20px, calc((100vw - 1120px) / 2));
  bottom: -24px;
  z-index: 1;
  width: clamp(92px, 15vw, 150px);
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 32px;
  box-shadow: 0 24px 56px rgba(0, 0, 0, 0.24);
  transform: rotate(4deg);
}

.final-inner {
  position: relative;
  z-index: 2;
  max-width: 760px;
}

.final-inner .eyebrow {
  justify-content: center;
}

.final-inner h2 {
  color: #f8fafc;
}

.final-inner .button {
  margin-top: 12px;
}

.site-footer {
  display: grid;
  gap: 10px;
  padding: 34px 0 46px;
  color: var(--muted);
}

.footer-brand {
  width: fit-content;
}

.footer-logo {
  width: 168px;
  height: 56px;
}

.site-footer p {
  margin: 0;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 720ms cubic-bezier(0.22, 1, 0.36, 1), transform 720ms cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

:focus-visible {
  outline: 3px solid rgba(20, 184, 166, 0.34);
  outline-offset: 3px;
}

@keyframes water-shimmer {
  0%, 100% {
    transform: translateX(-4%) skewY(-1deg);
    opacity: 0.44;
  }
  50% {
    transform: translateX(4%) skewY(1deg);
    opacity: 0.64;
  }
}

@keyframes water-sheet-drift {
  0%, 100% {
    transform: translate3d(-18px, 0, 0) rotate(var(--sheet-angle)) scaleX(1);
  }
  50% {
    transform: translate3d(26px, -10px, 0) rotate(calc(var(--sheet-angle) + 3deg)) scaleX(1.04);
  }
}

@keyframes swim-stroke {
  0% {
    opacity: 0;
    transform: translate3d(-40px, 18px, 0) rotate(-14deg) scale(0.68);
  }
  28% {
    opacity: 0.72;
  }
  72% {
    opacity: 0.12;
    transform: translate3d(26px, -8px, 0) rotate(-14deg) scale(1.18);
  }
  100% {
    opacity: 0;
    transform: translate3d(42px, -16px, 0) rotate(-14deg) scale(1.34);
  }
}

@keyframes bubble-rise {
  0% {
    opacity: 0;
    transform: translate3d(0, 0, 0) scale(0.6);
  }
  18% {
    opacity: 0.75;
  }
  82% {
    opacity: 0.28;
  }
  100% {
    opacity: 0;
    transform: translate3d(-22px, -120px, 0) scale(1.5);
  }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.72; }
  50% { transform: scale(1.45); opacity: 1; }
}

@keyframes wave {
  0%, 100% { transform: scaleY(0.55); }
  50% { transform: scaleY(1.28); }
}

@keyframes mascot-bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@media (max-width: 1080px) {
  .site-header {
    inset: 10px 0 auto;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: min(280px, calc(100vw - 40px));
    display: none;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: var(--surface);
    box-shadow: var(--shadow);
    padding: 10px;
  }

  .site-nav.is-open {
    display: grid;
  }

  .site-nav a {
    justify-content: flex-start;
  }

  .hero {
    min-height: auto;
    padding-top: 112px;
    padding-bottom: 36px;
    background:
      linear-gradient(180deg, rgba(248, 250, 252, 0.97) 0%, rgba(248, 250, 252, 0.9) 46%, rgba(248, 250, 252, 0.78) 100%),
      linear-gradient(145deg, rgba(59, 130, 246, 0.16) 0%, transparent 42%),
      url("assets/hero-pool-voice.png");
    background-size: cover, cover, auto 100%;
    background-position: center, center, 62% center;
  }

  .hero-copy {
    max-width: 720px;
  }

  .hero-stage {
    position: relative;
    right: auto;
    bottom: auto;
    width: min(720px, 100%);
    min-height: 600px;
    margin-top: 34px;
  }

  .problem-grid,
  .feature-grid,
  .trust-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-card {
    grid-column: span 1;
  }

  .voice-layout,
  .contact-shell {
    grid-template-columns: 1fr;
  }

  .voice-mascot {
    right: 10px;
  }

  .screen-row {
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    padding-bottom: 12px;
  }

  .screen-card {
    min-width: 210px;
    scroll-snap-align: start;
  }
}

@media (max-width: 640px) {
  :root {
    --container: min(100vw - 28px, 1120px);
  }

  body {
    font-size: 15px;
  }

  .brand-logo {
    width: 128px;
    height: 42px;
  }

  .site-header {
    padding-left: 10px;
  }

  .hero {
    padding-inline: 14px;
    background-size: cover, cover, auto 86%;
    background-position: center, center, 58% 18px;
  }

  .water-sheet {
    left: -36%;
    right: -36%;
    opacity: 0.28;
  }

  .stroke-ripple-a {
    left: 44%;
    top: 34%;
  }

  .stroke-ripple-b {
    left: 54%;
    top: 58%;
  }

  h1 {
    font-size: clamp(38px, 13vw, 58px);
  }

  h2 {
    font-size: clamp(28px, 8.8vw, 40px);
  }

  .hero-actions {
    display: grid;
  }

  .hero-stats {
    display: grid;
    grid-template-columns: 1fr;
  }

  .hero-stage {
    min-height: 650px;
  }

  .hero-mascot {
    position: relative;
    right: auto;
    top: auto;
    width: fit-content;
    margin-bottom: 12px;
  }

  .demo-card {
    width: 100%;
    left: 0;
    top: 78px;
  }

  .phone-stack {
    width: 100%;
    height: 430px;
    top: 386px;
    bottom: auto;
  }

  .phone {
    width: 210px;
    border-width: 8px;
    border-radius: 32px;
  }

  .phone-main {
    right: 10px;
  }

  .phone-back {
    left: 4px;
    bottom: 54px;
  }

  .section-pad {
    padding: 72px 0;
  }

  .problem-grid,
  .feature-grid,
  .trust-list {
    grid-template-columns: 1fr;
  }

  .screen-row {
    grid-template-columns: repeat(5, minmax(220px, 1fr));
  }

  .contact-shell {
    border-radius: 18px;
  }

  .contact-options {
    grid-template-columns: 1fr;
  }

  .final-mascot {
    opacity: 0.34;
    right: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ---- 規約ページ（privacy.html / terms.html） ---- */
.legal-header {
  position: static;
  display: flex;
  justify-content: center;
  padding: 18px 0 6px;
}

.legal-page {
  width: min(760px, calc(100vw - 40px));
  margin: 0 auto;
  padding: 24px 0 72px;
}

.legal-body h1 {
  font-family: var(--round);
  font-size: clamp(26px, 4vw, 34px);
  color: var(--deep);
  margin: 12px 0 6px;
}

.legal-body h2 {
  font-family: var(--round);
  font-size: 20px;
  color: var(--navy);
  margin: 34px 0 10px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--mint);
}

.legal-body h3 {
  font-size: 16px;
  color: var(--navy);
  margin: 22px 0 6px;
}

.legal-body p,
.legal-body li {
  color: var(--slate);
  font-size: 15px;
}

.legal-body ul {
  padding-left: 22px;
  margin: 8px 0;
}

.legal-body strong {
  color: var(--navy);
}

.legal-body .table-wrap {
  overflow-x: auto;
  margin: 12px 0;
}

.legal-body table {
  border-collapse: collapse;
  width: 100%;
  min-width: 560px;
  font-size: 13.5px;
  background: var(--surface);
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

.legal-body th,
.legal-body td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line-soft);
  color: var(--slate);
}

.legal-body th {
  background: var(--mint-soft);
  color: var(--navy);
  font-weight: 700;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  justify-content: center;
  margin: 6px 0 2px;
}

.footer-links a {
  color: var(--muted);
  font-size: 13px;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer-links a:hover {
  color: var(--aqua-dark);
}