/* ==========================================================
   おしふ landing page
   Palette: sakura / cream / sumi. Lots of 余白. Rounded type.
   ========================================================== */

:root {
  --sakura: #FF8FB1;
  --sakura-deep: #F2678F;
  --sakura-soft: #FFD6E3;
  --sakura-mist: #FFF3F7;
  --cream: #FFF9F1;
  --mint: #8DD9B5;
  --lavender: #B39DDB;
  --sora: #7FC8F8;
  --sumi: #3A3340;
  --sumi-soft: #6F6878;
  --sumi-mist: #A9A3B0;
  --line: #F0E4E9;
  --white: #FFFFFF;

  --font-round: "Zen Maru Gothic", "Hiragino Maru Gothic ProN", "Hiragino Sans", system-ui, sans-serif;
  --font-body: "Zen Kaku Gothic New", "Hiragino Sans", "Noto Sans JP", system-ui, sans-serif;

  --radius: 28px;
  --shadow: 0 18px 50px rgba(242, 103, 143, 0.12);
  --maxw: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--sumi);
  background: var(--sakura-mist);
  line-height: 1.9;
  letter-spacing: 0.02em;
  font-feature-settings: "palt";
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { font-family: var(--font-round); font-weight: 700; line-height: 1.45; margin: 0; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

.container { width: min(var(--maxw), 100% - 48px); margin-inline: auto; }
.container.narrow { max-width: 760px; }
.sp { display: none; }
.nowrap { white-space: nowrap; }
@media (max-width: 720px) { .sp { display: inline; } }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 24px;
  padding: 14px 32px;
  background: rgba(255, 243, 247, 0.78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: box-shadow .3s;
}
.site-header.scrolled { box-shadow: 0 6px 24px rgba(58, 51, 64, 0.06); }
.brand { display: flex; align-items: center; gap: 10px; margin-right: auto; }
.brand img { border-radius: 10px; }
.brand-name { font-family: var(--font-round); font-weight: 900; font-size: 1.25rem; }
.brand-sub { font-size: .75rem; color: var(--sumi-soft); margin-left: 4px; letter-spacing: .12em; }
.nav { display: flex; gap: 28px; font-size: .92rem; font-weight: 500; }
.nav a { position: relative; padding: 4px 0; }
.nav a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 2px;
  background: var(--sakura); border-radius: 2px; transform: scaleX(0); transition: transform .25s;
}
.nav a:hover::after { transform: scaleX(1); }
@media (max-width: 860px) { .nav, .brand-sub { display: none; } .site-header { padding: 12px 20px; } }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-round); font-weight: 700;
  padding: 14px 28px; border-radius: 999px;
  background: var(--white); color: var(--sakura-deep);
  box-shadow: 0 6px 20px rgba(242, 103, 143, 0.15);
  transition: transform .2s, box-shadow .2s;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(242, 103, 143, 0.22); }
.btn-primary { background: var(--sakura); color: var(--white); }
.btn-small { padding: 10px 20px; font-size: .9rem; }
.btn-lg { padding: 18px 36px; font-size: 1.1rem; }
.btn[aria-disabled="true"] { opacity: .85; cursor: default; }
.link-arrow { font-weight: 500; color: var(--sumi-soft); }
.link-arrow::after { content: " →"; transition: margin-left .2s; }
.link-arrow:hover::after { margin-left: 6px; }

/* ---------- hero ---------- */
.hero { position: relative; padding: 48px 0 40px; overflow: hidden; }
.hero-pattern {
  position: absolute; inset: 0; pointer-events: none;
  /* 青海波 seigaiha, drawn with radial gradients */
  --s: 64px;
  background:
    radial-gradient(circle at 50% 100%, transparent 36%, var(--sakura-soft) 37%, var(--sakura-soft) 39%, transparent 40%, transparent 46%, var(--sakura-soft) 47%, var(--sakura-soft) 49%, transparent 50%) 0 0 / var(--s) calc(var(--s) * 0.5),
    radial-gradient(circle at 50% 100%, transparent 36%, var(--sakura-soft) 37%, var(--sakura-soft) 39%, transparent 40%, transparent 46%, var(--sakura-soft) 47%, var(--sakura-soft) 49%, transparent 50%) calc(var(--s) * 0.5) calc(var(--s) * 0.25) / var(--s) calc(var(--s) * 0.5);
  opacity: .45;
  -webkit-mask-image: radial-gradient(ellipse 70% 80% at 70% 40%, #000 20%, transparent 75%);
  mask-image: radial-gradient(ellipse 70% 80% at 70% 40%, #000 20%, transparent 75%);
}
.hero-inner {
  position: relative;
  width: min(var(--maxw), 100% - 48px); margin-inline: auto;
  display: grid; grid-template-columns: auto 1.05fr .95fr; gap: 40px; align-items: center;
}
.tate {
  writing-mode: vertical-rl; text-orientation: upright;
  font-family: var(--font-round); font-weight: 700; font-size: 1.05rem; letter-spacing: .45em;
  color: var(--sakura-deep); padding-top: 8px; margin: 0;
  border-left: 1px solid var(--sakura-soft); padding-left: 14px; height: 15em;
}
.eyebrow { font-size: .9rem; color: var(--sumi-soft); letter-spacing: .14em; display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.seal {
  display: inline-grid; place-items: center; width: 44px; height: 44px; border-radius: 50%;
  background: var(--sakura-deep); color: #fff; font-family: var(--font-round); font-weight: 900; font-size: .85rem; letter-spacing: 0;
  box-shadow: inset 0 0 0 2px #fff, inset 0 0 0 3px var(--sakura-deep);
}
h1 { font-size: clamp(2rem, 4.2vw, 3.2rem); font-weight: 900; letter-spacing: .02em; }
h1 em {
  font-style: normal; color: var(--sakura-deep);
  background: linear-gradient(transparent 62%, var(--sakura-soft) 62%);
}
.lead { margin-top: 24px; font-size: 1.05rem; color: var(--sumi-soft); }
.lead strong { color: var(--sumi); font-weight: 700; }
.cta-row { display: flex; align-items: center; gap: 24px; margin-top: 32px; flex-wrap: wrap; }
.hero-badges { display: flex; gap: 10px 22px; flex-wrap: wrap; margin-top: 28px; font-size: .85rem; color: var(--sumi-soft); }
.hero-badges li::before { content: "●"; color: var(--mint); font-size: .55rem; vertical-align: 3px; margin-right: 8px; }

.hero-visual { position: relative; display: grid; place-items: center; padding: 20px 0; }
.phone {
  width: min(300px, 70vw); aspect-ratio: 552 / 1200;
  border-radius: 46px; padding: 10px; background: #2B2630;
  box-shadow: var(--shadow), 0 40px 80px rgba(58, 51, 64, 0.18);
  position: relative;
}
.phone::before {
  content: ""; position: absolute; top: 20px; left: 50%; transform: translateX(-50%);
  width: 92px; height: 26px; border-radius: 20px; background: #2B2630; z-index: 2;
}
.phone img { width: 100%; height: 100%; object-fit: cover; border-radius: 38px; }
.phone-sm { width: min(250px, 62vw); border-radius: 40px; padding: 8px; }
.phone-sm img { border-radius: 33px; }
.phone-sm::before { width: 76px; height: 22px; top: 16px; }

.mascot-float { position: absolute; right: -10px; bottom: 10px; width: 190px; margin: 0; animation: bob 3.2s ease-in-out infinite; }
.mascot-float img { filter: drop-shadow(0 12px 18px rgba(58, 51, 64, 0.18)); }
.bubble {
  position: absolute; top: -34px; left: -70px;
  background: #fff; padding: 10px 16px; border-radius: 18px; font-family: var(--font-round); font-weight: 700; font-size: .85rem; line-height: 1.5;
  box-shadow: 0 8px 24px rgba(242, 103, 143, 0.15);
}
.bubble::after {
  content: ""; position: absolute; right: -6px; bottom: 14px; width: 14px; height: 14px;
  background: #fff; transform: rotate(45deg); border-radius: 3px;
}
@keyframes bob { 0%, 100% { transform: translateY(0) } 50% { transform: translateY(-8px) } }

@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; gap: 24px; text-align: center; }
  .tate { display: none; }
  .eyebrow, .cta-row, .hero-badges { justify-content: center; }
  .hero-visual { padding-top: 32px; padding-bottom: 36px; }
  .mascot-float { right: 0; bottom: -10px; width: 120px; }
  .bubble { top: -26px; left: -84px; font-size: .78rem; padding: 8px 12px; }
}

/* ---------- ticker ---------- */
.ticker { overflow: hidden; border-block: 1px solid var(--line); background: #fff; padding: 12px 0; }
.ticker-track { display: flex; gap: 48px; width: max-content; animation: ticker 28s linear infinite; font-family: var(--font-round); font-weight: 700; color: var(--sumi-mist); letter-spacing: .2em; font-size: .85rem; }
.ticker-track span::after { content: "✿"; margin-left: 48px; color: var(--sakura-soft); }
@keyframes ticker { to { transform: translateX(-50%); } }

/* ---------- sections ---------- */
.section { padding: 112px 0; }
.kicker {
  font-family: var(--font-round); font-size: .85rem; letter-spacing: .3em; color: var(--sakura-deep); font-weight: 700;
  display: flex; align-items: center; gap: 14px; justify-content: center; margin-bottom: 20px;
}
.kicker::before, .kicker::after { content: ""; width: 28px; height: 1px; background: var(--sakura); opacity: .5; }
.h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); text-align: center; letter-spacing: .03em; }
.center-lead { text-align: center; color: var(--sumi-soft); margin-top: 20px; }

/* pain */
.pain { background: #fff; }
.pain-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 56px; }
.pain-card {
  position: relative; padding: 36px 28px 28px; border-radius: var(--radius);
  background: var(--sakura-mist); border: 1px solid var(--line);
}
.pain-card .num { position: absolute; top: -14px; left: 24px; font-family: var(--font-round); font-weight: 900; color: var(--sakura); background: #fff; padding: 2px 12px; border-radius: 999px; font-size: .85rem; letter-spacing: .1em; }
.pain-card h3 { font-size: 1.1rem; margin-bottom: 10px; }
.pain-card p { font-size: .95rem; color: var(--sumi-soft); }
.pain-mascot { margin: 48px auto 0; text-align: center; width: 170px; }
.pain-mascot figcaption { font-size: .85rem; color: var(--sumi-mist); margin-top: 6px; width: max-content; max-width: calc(100vw - 48px); margin-inline: auto; }
@media (max-width: 820px) { .pain-grid { grid-template-columns: 1fr; } }

/* features */
.feature {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center;
  margin-top: 96px;
}
.feature:first-of-type { margin-top: 72px; }
.feature-flip .feature-text { order: 2; }
.feature-no {
  display: inline-block; font-family: var(--font-round); font-weight: 900; font-size: 2.6rem; color: var(--sakura-soft); line-height: 1; margin-bottom: 8px;
}
.feature h3 { font-size: 1.6rem; margin-bottom: 16px; }
.feature p { color: var(--sumi-soft); }
.checks { margin-top: 22px; display: grid; gap: 8px; font-size: .95rem; }
.checks li { padding-left: 28px; position: relative; }
.checks li::before {
  content: ""; position: absolute; left: 0; top: .55em; width: 16px; height: 16px; border-radius: 50%;
  background: var(--mint); box-shadow: inset 0 0 0 4px #fff, 0 0 0 1px var(--mint);
}
.feature-visual { display: grid; place-items: center; }
@media (max-width: 820px) {
  .feature { grid-template-columns: 1fr; gap: 32px; margin-top: 72px; text-align: center; }
  .feature-flip .feature-text { order: 0; }
  .checks { text-align: left; max-width: 420px; margin-inline: auto; }
}

/* illustrated cards (no screenshot available) */
.card-stack, .goal-card {
  width: min(340px, 100%); background: #fff; border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow);
  font-family: var(--font-round);
}
.mini-card { display: flex; align-items: center; gap: 14px; padding-bottom: 16px; border-bottom: 1px dashed var(--line); margin-bottom: 12px; }
.mini-date { display: grid; place-items: center; width: 48px; height: 52px; border-radius: 14px; background: #EFE7FA; color: var(--lavender); line-height: 1; }
.mini-date b { font-size: 1.3rem; } .mini-date small { font-size: .65rem; }
.mini-body { flex: 1; display: grid; line-height: 1.4; } .mini-body b { font-size: .95rem; } .mini-body span { font-size: .75rem; color: var(--sumi-mist); }
.mini-amt { font-weight: 900; }
.mini-row { display: flex; align-items: center; gap: 10px; padding: 8px 0; font-size: .9rem; }
.mini-row i { width: 10px; height: 10px; border-radius: 50%; background: var(--c); }
.mini-row em { margin-left: auto; font-style: normal; font-weight: 700; }
.goal-head { display: flex; gap: 12px; align-items: center; line-height: 1.4; }
.goal-emoji { font-size: 1.8rem; }
.goal-head small { display: block; font-size: .75rem; color: var(--sumi-mist); }
.goal-bar { height: 18px; border-radius: 999px; background: #EFE7FA; margin: 18px 0 12px; overflow: hidden; }
.goal-bar i { display: block; height: 100%; width: 60%; border-radius: 999px; background: linear-gradient(90deg, #C9B8FF, var(--lavender)); }
.goal-nums { display: flex; align-items: baseline; gap: 8px; }
.goal-nums b { font-size: 1.3rem; color: var(--lavender); } .goal-nums span { font-size: .8rem; color: var(--sumi-mist); }
.goal-nums em { margin-left: auto; font-style: normal; font-size: .8rem; color: var(--sumi-soft); font-weight: 700; }
.goal-hint { font-size: .8rem; color: var(--sumi-mist); margin-top: 10px; }

/* mascot */
.mascot { background: #fff; }
.poses { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin-top: 56px; }
.poses figure { margin: 0; text-align: center; }
.poses img { width: 220px; margin: 0 auto 12px; transition: transform .3s; }
.poses figure:hover img { transform: translateY(-6px) rotate(-2deg); }
.poses figcaption b { display: block; font-family: var(--font-round); font-size: 1.05rem; }
.poses figcaption span { font-size: .85rem; color: var(--sumi-soft); }
@media (max-width: 720px) { .poses { grid-template-columns: 1fr; gap: 40px; } }

/* privacy */
.privacy { background: var(--sumi); color: #fff; }
.privacy .kicker { color: var(--sakura-soft); justify-content: flex-start; }
.privacy .kicker::before, .privacy .kicker::after { background: var(--sakura-soft); }
.privacy .kicker::after { display: none; }
.privacy .h2 { text-align: left; }
.privacy-inner { display: grid; grid-template-columns: 1.1fr .9fr; gap: 64px; align-items: start; }
.privacy-text p:not(.kicker) { margin-top: 20px; color: rgba(255, 255, 255, 0.72); }
.privacy-list { display: grid; gap: 14px; }
.privacy-list li { padding: 18px 22px; border-radius: 18px; background: rgba(255, 255, 255, 0.06); border: 1px solid rgba(255, 255, 255, 0.1); display: grid; line-height: 1.6; }
.privacy-list b { font-family: var(--font-round); }
.privacy-list span { font-size: .85rem; color: rgba(255, 255, 255, 0.65); }
@media (max-width: 820px) { .privacy-inner { grid-template-columns: 1fr; gap: 36px; } }

/* faq */
.faq details { border-bottom: 1px solid var(--line); padding: 6px 0; }
.faq details:first-of-type { margin-top: 40px; border-top: 1px solid var(--line); }
.faq summary {
  cursor: pointer; list-style: none; padding: 18px 44px 18px 0; position: relative;
  font-family: var(--font-round); font-weight: 700; font-size: 1.05rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before { content: "Q."; color: var(--sakura-deep); margin-right: 12px; }
.faq summary::after {
  content: "+"; position: absolute; right: 6px; top: 50%; transform: translateY(-50%);
  width: 28px; height: 28px; border-radius: 50%; background: var(--sakura-soft); color: var(--sakura-deep);
  display: grid; place-items: center; font-weight: 400; transition: transform .25s;
}
.faq details[open] summary::after { content: "−"; }
.faq details p { padding: 0 0 20px 36px; color: var(--sumi-soft); }

/* download */
.download { background: linear-gradient(180deg, var(--sakura-mist), var(--sakura-soft)); text-align: center; }
.download-inner { display: grid; justify-items: center; gap: 20px; }
.download-icon { border-radius: 28px; box-shadow: var(--shadow); }
.download p { color: var(--sumi-soft); }
.hash { font-family: var(--font-round); color: var(--sakura-deep); font-weight: 700; letter-spacing: .1em; }

/* footer */
.site-footer { background: #fff; padding: 48px 0 40px; font-size: .85rem; color: var(--sumi-soft); }
.footer-inner { display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: center; }
.footer-brand { font-family: var(--font-round); font-weight: 900; font-size: 1.2rem; color: var(--sumi); }
.footer-brand small { font-weight: 400; color: var(--sumi-mist); margin-left: 6px; letter-spacing: .1em; }
.footer-nav { display: flex; gap: 24px; flex-wrap: wrap; }
.footer-nav a:hover { color: var(--sakura-deep); }
.footer-legal { grid-column: 1 / -1; color: var(--sumi-mist); font-size: .78rem; border-top: 1px solid var(--line); padding-top: 20px; }
@media (max-width: 720px) { .footer-inner { grid-template-columns: 1fr; } }

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .5s ease, transform .5s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .mascot-float, .ticker-track { animation: none; }
  html { scroll-behavior: auto; }
}