:root {
  --paper:#faf9f6;
  --ink:#272525;
  --muted:#6c6667;
  --pink:#d92368;
  --line:#e5e0dc;
  --blush:#f3e7e6;
  --ease:cubic-bezier(.22,1,.36,1);
}

* {
  box-sizing:border-box;
}

html {
  scroll-behavior:smooth;
  scroll-padding-top:100px;
}

body {
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"Zen Kaku Gothic New",-apple-system,BlinkMacSystemFont,"Hiragino Sans","Noto Sans JP","Yu Gothic",sans-serif;
  -webkit-font-smoothing:antialiased;
  line-height:1.8;
}

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

button,a,summary {
  -webkit-tap-highlight-color:transparent;
}

a:focus-visible,summary:focus-visible {
  outline:3px solid var(--pink);
  outline-offset:6px;
  border-radius:4px;
}

img {
  max-width:100%;
  height:auto;
  display:block;
}

figure,p,h1,h2,h3 {
  margin:0;
}

h1,h2,h3 {
  font-weight:700;
  font-feature-settings:"palt";
  text-wrap:balance;
}

h2 {
  font-size:clamp(28px,3vw,40px);
  line-height:1.6;
  font-feature-settings:normal;
  letter-spacing:.01em;
}

p {
  overflow-wrap:anywhere;
}

.wrap {
  width:min(1140px,calc(100% - 96px));
  margin-inline:auto;
}

.skip-link {
  position:fixed;
  top:8px;
  left:16px;
  z-index:5;
  padding:8px 16px;
  background:var(--ink);
  color:white;
  transform:translateY(-160%);
}

.skip-link:focus {
  transform:none;
}

.site-header {
  width:min(1240px,calc(100% - 96px));
  height:100px;
  margin:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}

.brand {
  flex-shrink:0;
  display:inline-flex;
  align-items:center;
}

.brand img {
  width:132px;
}

.brand-with-caption {
  flex-direction:column;
  align-items:center;
  gap:4px;
}

.brand-with-caption img {
  width:120px;
}

.brand-caption {
  font-size:12px;
  font-weight:500;
  line-height:1.4;
  letter-spacing:.12em;
  text-indent:.12em;
  white-space:nowrap;
}

.site-header nav {
  display:flex;
  align-items:center;
  gap:32px;
  font-size:13px;
  font-weight:600;
}

.nav-link {
  transition:color .2s;
}

.nav-link:hover {
  color:var(--pink);
}

.nav-download {
  border:1px solid var(--ink);
  border-radius:30px;
  padding:10px 22px;
  display:flex;
  align-items:center;
  gap:20px;
  transition:background .2s,color .2s;
}

.nav-download:hover {
  background:var(--ink);
  color:white;
}

.hero {
  display:grid;
  grid-template-columns:1.05fr 1fr;
  gap:30px;
  align-items:center;
  padding:45px 0 88px;
}

.eyebrow {
  font-size:12px;
  font-weight:600;
  letter-spacing:.12em;
  margin-bottom:24px;
  line-height:1.8;
}

.hero .eyebrow {
  display:flex;
  align-items:center;
  gap:10px;
}

.brand-dot {
  width:7px;
  height:7px;
  background:var(--pink);
  border-radius:50%;
}

.hero h1 {
  font-size:clamp(34px,4.05vw,53px);
  line-height:1.55;
  font-weight:700;
  font-feature-settings:normal;
  letter-spacing:.01em;
  margin-bottom:28px;
}

.hero-description {
  font-size:14px;
  line-height:2.1;
  color:var(--muted);
  margin-bottom:14px;
}

.button {
  display:inline-flex;
  gap:32px;
  justify-content:center;
  align-items:center;
  background:var(--ink);
  color:#fff;
  min-height:54px;
  border-radius:100px;
  padding:13px 28px;
  font-size:14px;
  font-weight:600;
  transition:transform .25s var(--ease),background .25s;
}

.button:hover {
  background:var(--pink);
  transform:translateY(-2px);
}

.hero .button {
  margin-top:21px;
}

.download-note {
  font-size:10px;
  color:var(--muted);
  margin-top:13px;
  letter-spacing:.01em;
}

.hero-art {
  position:relative;
  height:584px;
  border-radius:0;
  background:var(--blush);
  overflow:hidden;
  isolation:isolate;
}

.phone {
  border-radius:31px;
  background:#fbfaf7;
  border:5px solid #fbfaf7;
  box-shadow:0 20px 45px -16px #4d323236,0 0 0 1px #2620211a;
  overflow:hidden;
  width:218px;
}

.phone img {
  width:100%;
  height:auto;
}

.hero-art .phone {
  position:absolute;
  transform-origin:center;
}

.phone-front {
  left:calc(50% - 176px);
  top:52px;
  transform:rotate(-6deg);
  z-index:2;
  animation:arrive-front .95s var(--ease) both;
}

.phone-back {
  right:calc(50% - 176px);
  top:86px;
  transform:rotate(7deg);
  animation:arrive-back 1.1s var(--ease) both;
}

.intro {
  padding:75px 0 98px;
  border-top:1px solid var(--line);
}

.section-intro {
  text-align:center;
}

.section-intro .eyebrow {
  margin-bottom:16px;
  color:var(--muted);
}

.intro-description {
  max-width:650px;
  margin:25px auto 0;
  color:var(--muted);
  font-size:14px;
  line-height:2;
}

.app-facts {
  display:grid;
  grid-template-columns:.8fr 1.2fr;
  gap:50px;
  padding:110px 0 0;
}

.app-facts .eyebrow {
  margin-bottom:16px;
  color:var(--muted);
}

.facts-intro {
  margin-top:24px;
  font-size:14px;
  color:var(--muted);
  line-height:2;
}

.facts-list {
  margin:0;
  font-size:14px;
  line-height:1.9;
}

.facts-list > div {
  display:grid;
  grid-template-columns:90px 1fr;
  gap:20px;
  padding:20px 0;
  border-bottom:1px solid var(--line);
}

.facts-list > div:first-child {
  border-top:1px solid var(--line);
}

.facts-list dt {
  color:var(--muted);
}

.facts-list dd {
  margin:0;
}

.facts-list small {
  display:block;
  color:var(--muted);
  font-size:12px;
  margin-top:5px;
}

.facts-list a,
.faq-list p a {
  text-decoration:underline;
  text-underline-offset:4px;
}

.features {
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:54px;
  margin-top:60px;
}

.feature {
  border-top:1px solid var(--line);
  padding-top:30px;
}

.feature-mark {
  height:86px;
  color:var(--pink);
}

.number-symbol {
  display:block;
  width:64px;
  height:64px;
  overflow:visible;
}

.number-symbol text {
  fill:currentColor;
  font-family:"Helvetica Neue", Arial, sans-serif;
  font-size:27px;
  font-weight:400;
  font-variant-numeric:tabular-nums;
  letter-spacing:-1px;
  text-anchor:middle;
}

.symbol-line,
.symbol-guide {
  fill:none;
  stroke:currentColor;
  stroke-width:1.5;
  stroke-linecap:round;
  stroke-linejoin:round;
}

.symbol-guide {
  opacity:.22;
}

.feature h3 {
  font-size:18px;
  margin-bottom:13px;
  letter-spacing:-.03em;
}

.feature p {
  font-size:13px;
  color:var(--muted);
  line-height:2;
}

.progress-mark {
  display:flex;
  align-items:center;
  gap:8px;
  padding-bottom:18px;
}

.progress-mark i {
  width:22px;
  height:22px;
  background:#eac1ce;
  border-radius:50%;
}

.progress-mark i:nth-child(2) {
  width:30px;
  height:30px;
  background:#df7e9e;
}

.progress-mark i:nth-child(3) {
  width:38px;
  height:38px;
  background:var(--pink);
}

.reward-section {
  display:grid;
  grid-template-columns:1fr 1fr;
  background:#f0ede7;
  border-radius:36px;
  overflow:hidden;
  min-height:570px;
}

.reward-art {
  display:flex;
  justify-content:center;
  align-items:flex-start;
  padding-top:65px;
  height:570px;
  overflow:hidden;
}

.reward-phone {
  width:258px;
  transform:rotate(-5deg);
  flex-shrink:0;
}

.reward-copy {
  align-self:center;
  padding:58px 45px 58px 20px;
}

.reward-copy .eyebrow {
  color:var(--muted);
  font-size:11px;
  margin-bottom:16px;
}

.reward-copy h2 {
  margin-bottom:25px;
}

.reward-copy p:not(.eyebrow) {
  font-size:14px;
  color:var(--muted);
  line-height:2.15;
  margin-bottom:16px;
}

.text-link {
  display:inline-flex;
  align-items:center;
  gap:23px;
  font-size:13px;
  font-weight:600;
  padding:8px 0;
  border-bottom:1px solid currentColor;
  transition:color .2s;
}

.text-link:hover {
  color:var(--pink);
}

.reward-copy .text-link {
  margin-top:9px;
}

.faq-section {
  padding:130px 0;
  display:grid;
  grid-template-columns:.8fr 1.2fr;
  gap:50px;
}

.faq-section .eyebrow {
  color:var(--muted);
  margin-bottom:16px;
}

.faq-list details {
  border-bottom:1px solid var(--line);
}

.faq-list details:first-child {
  border-top:1px solid var(--line);
}

summary {
  cursor:pointer;
  list-style:none;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:24px 0;
  font-size:14px;
  font-weight:600;
}

summary::-webkit-details-marker {
  display:none;
}

summary span {
  font-weight:400;
  font-size:20px;
  color:var(--muted);
  transition:transform .25s;
}

details[open] summary span {
  transform:rotate(45deg);
}

.faq-list details p {
  color:var(--muted);
  font-size:13px;
  line-height:2.1;
  padding:0 32px 24px 0;
}

.closing {
  background:#f3e7e6;
  text-align:center;
  padding:75px 0 80px;
}

.app-icon {
  width:62px;
  height:62px;
  border-radius:15px;
  margin:0 auto 25px;
}

.closing .eyebrow {
  font-size:11px;
  margin-bottom:13px;
}

.closing h2 {
  font-size:40px;
  margin-bottom:26px;
}

.site-footer {
  display:flex;
  align-items:center;
  gap:35px;
  min-height:140px;
  padding-block:35px;
}

.site-footer .brand img {
  width:108px;
}

.site-footer nav {
  display:flex;
  flex-wrap:wrap;
  gap:24px;
  margin-left:auto;
  font-size:11px;
  color:var(--muted);
}

.site-footer a:hover {
  color:var(--pink);
}

.site-footer small {
  font-size:10px;
  color:var(--muted);
}

.muted {
  color:var(--muted);
}

.archive {
  padding-block:65px;
}

.archive h1 {
  font-size:36px;
  margin-bottom:20px;
}

.archive>p {
  font-size:13px;
}

.news-list {
  margin:50px 0 0;
  padding:0;
  list-style:none;
}

.news-list li {
  border-top:1px solid var(--line);
  padding:20px 0;
  font-size:14px;
}

.news-list a {
  text-decoration:underline;
}

/* 下層ページもトップと同じ書体・余白・罫線で整える。 */
.subpage {
  max-width:960px;
  padding-block:65px 90px;
}

.page-intro {
  margin-bottom:56px;
}

.page-intro h1 {
  margin-bottom:20px;
  font-size:clamp(28px,3.4vw,44px);
  line-height:1.6;
  font-feature-settings:normal;
  letter-spacing:.01em;
}

.page-intro>.muted {
  max-width:640px;
  font-size:14px;
}

.guide-grid {
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:56px 40px;
}

.guide-item {
  display:grid;
  grid-template-rows:auto 1fr auto auto;
  align-content:start;
  border-top:1px solid var(--line);
  padding-top:24px;
}

.guide-item h2 {
  font-size:23px;
  margin-bottom:12px;
}

.guide-item p {
  font-size:14px;
  margin-bottom:24px;
}

.guide-item iframe {
  display:block;
  width:100%;
  aspect-ratio:16/9;
  border:0;
  background:var(--blush);
}

.guide-invitation {
  margin:24px auto;
  color:var(--muted);
  font-size:14px;
  line-height:2;
}

.video-link {
  justify-self:start;
  margin-top:12px;
  color:var(--muted);
  font-size:12px;
  text-decoration:underline;
  text-underline-offset:4px;
}

.video-link:hover { color:var(--pink); }

.exercise-note {
  margin-top:56px;
  border-top:1px solid var(--line);
  padding-top:24px;
  color:var(--muted);
  font-size:13px;
}

.legacy-contact {
  padding-bottom:35px;
  color:var(--muted);
  font-size:11px;
}

.legacy-contact a {
  display:inline-block;
  margin:12px 24px 0 0;
  text-decoration:underline;
  text-underline-offset:4px;
}

@media(max-width:760px) {
  .subpage { padding-block:35px 56px; }
  .page-intro { margin-bottom:36px; }
  .guide-grid { grid-template-columns:1fr; gap:36px; }
  .guide-item h2 { font-size:21px; }
}

@keyframes arrive-front {
  from {
    opacity:0;
    transform:translateY(20px) rotate(-6deg);
  }
  to {
    opacity:1;
    transform:translateY(0) rotate(-6deg);
  }
}

@keyframes arrive-back {
  from {
    opacity:0;
    transform:translateY(28px) rotate(7deg);
  }
  to {
    opacity:1;
    transform:translateY(0) rotate(7deg);
  }
}

@media(min-width:1400px) {
  .hero {
    padding-top:65px;
    padding-bottom:100px;
  }
  .hero h1 {
    font-size:55px;
  }
}

@media(max-width:1050px) {
  .wrap,.site-header {
    width:calc(100% - 64px);
  }
  .hero {
    gap:24px;
  }
  .hero h1 {
    font-size:38px;
  }
  .hero-description {
    font-size:13px;
  }
  .hero-art {
    height:510px;
  }
  .hero-art .phone {
    width:188px;
  }
  .phone-front {
    left:calc(50% - 150px);
  }
  .phone-back {
    right:calc(50% - 150px);
    top:85px;
  }
  .features {
    gap:30px;
  }
  .reward-copy {
    padding-right:28px;
  }
  .site-footer {
    flex-wrap:wrap;
    gap:24px;
  }
  .site-footer small {
    width:100%;
  }
}

@media(max-width:760px) {
  html {
    scroll-padding-top:24px;
  }
  .wrap,.site-header {
    width:calc(100% - 40px);
  }
  .site-header {
    height:80px;
  }
  .brand img {
    width:113px;
  }
  .brand-with-caption img {
    width:120px;
  }
  .site-header nav {
    gap:0;
  }
  .nav-link {
    display:none;
  }
  .nav-download {
    font-size:12px;
    padding:8px 17px;
    gap:15px;
  }
  .hero {
    grid-template-columns:1fr;
    padding:32px 0 58px;
    gap:36px;
  }
  .hero-copy {
    text-align:center;
  }
  .hero .eyebrow {
    justify-content:center;
    font-size:11px;
    margin-bottom:19px;
  }
  .hero h1 {
    font-size:clamp(26px,7.4vw,48px);
    line-height:1.6;
    letter-spacing:.01em;
    margin-bottom:22px;
  }
  .hero-description {
    font-size:13px;
    line-height:2;
    margin-bottom:10px;
  }
  .hero .button {
    margin-top:16px;
  }
  .download-note {
    font-size:9px;
  }
  .hero-art {
    width:min(470px,100%);
    height:auto;
    aspect-ratio:.82;
    margin:auto;
    border-radius:0;
  }
  .hero-art .phone {
    width:46%;
  }
  .phone-front {
    left:15%;
    top:6%;
  }
  .phone-back {
    right:15%;
    top:14%;
  }
  .intro {
    padding:50px 0 65px;
  }
  .section-intro .eyebrow {
    font-size:10px;
  }
  h2 {
    font-size:27px;
    line-height:1.6;
  }
  .features {
    grid-template-columns:1fr;
    gap:27px;
    margin-top:35px;
  }
  .feature {
    position:relative;
    padding:23px 0 0 88px;
    min-height:136px;
  }
  .feature-mark {
    position:absolute;
    left:0;
    top:23px;
    width:64px;
    height:64px;
  }
  .number-symbol {
    width:56px;
    height:56px;
  }
  .progress-mark {
    gap:4px;
  }
  .progress-mark i {
    width:14px;
    height:14px;
  }
  .progress-mark i:nth-child(2) {
    width:19px;
    height:19px;
  }
  .progress-mark i:nth-child(3) {
    width:24px;
    height:24px;
  }
  .feature h3 {
    font-size:17px;
    margin-bottom:8px;
  }
  .feature p {
    font-size:12px;
  }
  .reward-section {
    grid-template-columns:1fr;
    border-radius:28px;
  }
  .reward-copy {
    grid-row:1;
    text-align:center;
    padding:43px 22px 20px;
  }
  .reward-copy h2 {
    font-size:32px;
  }
  .reward-copy p:not(.eyebrow) {
    font-size:13px;
  }
  .reward-art {
    height:390px;
    padding-top:25px;
  }
  .reward-phone {
    width:235px;
    transform:rotate(-4deg);
  }
  .faq-section {
    padding:68px 0;
    grid-template-columns:1fr;
    gap:28px;
  }
  .faq-section .eyebrow {
    margin-bottom:9px;
  }
  .faq-section h2 {
    font-size:28px;
  }
  summary {
    padding:22px 0;
    font-size:13px;
  }
  .faq-list details p {
    font-size:12px;
  }
  .closing {
    padding:57px 0 60px;
  }
  .closing h2 {
    font-size:32px;
  }
  .site-footer {
    padding-block:35px;
    gap:25px;
  }
  .site-footer nav {
    margin-left:0;
    width:100%;
    gap:22px;
  }
  .site-footer small {
    width:auto;
  }
  .archive {
    padding-top:35px;
  }
  .archive h1 {
    font-size:29px;
  }
}

@media(max-width:360px) {
  .hero-description {
    font-size:12px;
  }
  .desktop-break {
    display:none;
  }
}

@media(prefers-reduced-motion:reduce) {
  html {
    scroll-behavior:auto;
  }
  *,*::before,*::after {
    animation:none!important;
    transition:none!important;
  }
  .button:hover {
    transform:none;
  }
}


@media (max-width:760px) {
  .intro-description {
    font-size:13px;
    margin-top:20px;
  }
  .app-facts {
    grid-template-columns:1fr;
    gap:32px;
    padding-top:64px;
  }
  .facts-list > div {
    grid-template-columns:70px 1fr;
    gap:16px;
  }
  .facts-list {
    font-size:13px;
  }
}