:root {
  color-scheme: dark;
  --night: #0b1621;
  --night-2: #102232;
  --card: #132a3b;
  --card-2: #173246;
  --line: rgba(190, 225, 220, .14);
  --text: #eef4f2;
  --muted: #a9bfbc;
  --teal: #4fd1bf;
  --teal-deep: #0a7a73;
  --mint: #c7f0de;
  --orange: #f27a38;
  --orange-soft: #ffb07a;
  --radius: 22px;
  --wrap: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--night);
  color: var(--text);
  font-family: "Zen Kaku Gothic New", "Hiragino Sans", "Noto Sans JP", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.85;
  font-feature-settings: "palt";
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--teal); }
h1, h2, h3 { line-height: 1.35; margin: 0; font-weight: 900; }
p { margin: 0; }
.wrap { width: min(var(--wrap), 100% - 32px); margin-inline: auto; }
section { padding: 96px 0; }
@media (max-width: 720px) { section { padding: 72px 0; } }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(11, 22, 33, .78);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 700; letter-spacing: .04em; }
.brand img { border-radius: 9px; }
.site-header nav { display: flex; gap: 22px; font-size: 14px; }
.site-header nav a { color: var(--muted); text-decoration: none; }
.site-header nav a:hover { color: var(--text); }
@media (max-width: 760px) { .hide-sm { display: none; } }

/* ---------- shared ---------- */
.phone {
  border-radius: 34px;
  overflow: hidden;
  border: 6px solid #1d3345;
  background: #1d3345;
  box-shadow: 0 30px 70px rgba(0, 0, 0, .45), 0 0 0 1px rgba(255, 255, 255, .06);
}
.phone img { width: 100%; }
.section-title { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.kicker { display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .24em; color: var(--teal); margin-bottom: 12px; }
.section-title h2 { font-size: clamp(26px, 4.4vw, 38px); }
.section-title p { color: var(--muted); margin-top: 16px; }
em { font-style: normal; color: var(--orange); }

.store-btn {
  display: inline-flex; align-items: center; gap: 12px;
  padding: 14px 24px; border-radius: 16px;
  background: var(--teal); color: #0b1621; text-decoration: none; font-weight: 700;
}
.store-btn svg { width: 26px; height: 26px; flex: none; }
.store-btn small { display: block; font-size: 12px; font-weight: 500; opacity: .8; line-height: 1.3; }
.store-btn span { line-height: 1.4; font-size: 17px; }
.store-btn.soon { background: transparent; color: var(--text); border: 1.5px solid var(--teal); cursor: default; }
.store-btn.soon svg { color: var(--teal); }
.cta { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.cta-note { color: var(--muted); font-size: 13px; }

/* ---------- hero ---------- */
.hero {
  position: relative;
  overflow-x: clip;
  padding: 72px 0 40px;
  background:
    radial-gradient(900px 520px at 85% 10%, rgba(79, 209, 191, .16), transparent 60%),
    radial-gradient(700px 480px at 0% 100%, rgba(242, 122, 56, .12), transparent 60%);
}
.hero .wrap { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.pill {
  display: inline-block; padding: 6px 14px; border-radius: 99px;
  background: rgba(79, 209, 191, .12); color: var(--mint);
  font-size: 13px; font-weight: 700; margin-bottom: 20px;
}
.hero h1 { font-size: clamp(36px, 5.6vw, 62px); letter-spacing: .01em; }
.hero h1 .line { display: block; white-space: nowrap; }
.hero .lead { color: var(--muted); font-size: clamp(15px, 1.8vw, 17px); margin: 24px 0 32px; max-width: 34em; }
.hero-visual { position: relative; justify-self: center; width: min(300px, 78vw); }
.hero-visual .phone { position: relative; z-index: 1; }
.hero-visual .glow {
  position: absolute; inset: 12% -30% -6% -30%; z-index: 0;
  background: radial-gradient(closest-side, rgba(79, 209, 191, .35), transparent);
  filter: blur(10px);
}
.chips { list-style: none; padding: 0; margin: 40px 0 0; display: flex; flex-wrap: wrap; gap: 10px; }
.chips li {
  font-size: 13px; font-weight: 700; color: var(--text);
  padding: 7px 14px; border-radius: 99px; border: 1px solid var(--line); background: rgba(255, 255, 255, .03);
}
.chips li::before { content: "✓"; color: var(--teal); margin-right: 6px; }
@media (max-width: 860px) {
  .hero .wrap { grid-template-columns: 1fr; text-align: left; }
  .hero-visual { width: min(260px, 70vw); }
}

/* ---------- target ---------- */
#target { background: var(--night-2); }
.targets { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.target {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 24px; display: flex; flex-direction: column; gap: 14px;
}
.target .ic {
  width: 52px; height: 52px; border-radius: 16px; display: grid; place-items: center;
  background: rgba(79, 209, 191, .14); color: var(--teal);
}
.target.family .ic { background: rgba(242, 122, 56, .16); color: var(--orange); }
.target .ic svg { width: 28px; height: 28px; }
.target h3 { font-size: 18px; }
.target .worry { color: var(--muted); font-size: 14px; }
.target .answer { margin-top: auto; padding-top: 14px; border-top: 1px dashed var(--line); font-size: 14px; font-weight: 700; color: var(--mint); }
.target.family .answer { color: var(--orange-soft); }
@media (max-width: 960px) { .targets { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .targets { grid-template-columns: 1fr; } }

/* ---------- scenes ---------- */
.scenes { display: grid; gap: 40px; }
.scene {
  display: grid; grid-template-columns: 1fr 260px; gap: 48px; align-items: center;
  background: linear-gradient(160deg, var(--card), var(--night-2));
  border: 1px solid var(--line); border-radius: 28px; padding: 44px;
}
.scene:nth-child(even) { grid-template-columns: 260px 1fr; }
.scene:nth-child(even) .scene-body { order: 2; }
.scene-tag { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 700; color: var(--teal); letter-spacing: .08em; }
.scene-tag b { font-size: 12px; background: var(--teal); color: var(--night); border-radius: 6px; padding: 1px 8px; letter-spacing: .1em; }
.scene.family .scene-tag { color: var(--orange-soft); }
.scene.family .scene-tag b { background: var(--orange); }
.scene h3 { font-size: clamp(21px, 3vw, 27px); margin: 12px 0 8px; }
.scene .who { color: var(--muted); font-size: 14px; margin-bottom: 24px; }
.timeline { list-style: none; margin: 0; padding: 0; position: relative; }
.timeline::before { content: ""; position: absolute; left: 50px; top: 10px; bottom: 10px; width: 2px; background: var(--line); }
.timeline li { display: grid; grid-template-columns: 50px 1fr; gap: 22px; padding: 7px 0; position: relative; }
.timeline li::after {
  content: ""; position: absolute; left: 45px; top: 16px; width: 12px; height: 12px; border-radius: 50%;
  background: var(--night); border: 2px solid var(--teal);
}
.timeline li.alert::after { border-color: var(--orange); background: var(--orange); }
.timeline li.done::after { background: var(--teal); }
.timeline time { font-variant-numeric: tabular-nums; font-size: 13px; color: var(--muted); padding-top: 2px; }
.timeline p { font-size: 15px; }
.timeline p b { color: var(--mint); }
.timeline li.alert p b { color: var(--orange-soft); }
.scene .phone { width: 100%; max-width: 260px; margin-inline: auto; }
@media (max-width: 820px) {
  .scene, .scene:nth-child(even) { grid-template-columns: 1fr; padding: 28px 20px; gap: 28px; }
  .scene:nth-child(even) .scene-body { order: 0; }
  .scene .phone { max-width: 220px; }
}

/* ---------- levels ---------- */
#how { background: var(--night-2); }
.levels { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; counter-reset: lv; }
.level {
  position: relative; background: var(--card); border: 1px solid var(--line); border-radius: 18px;
  padding: 22px 18px 20px; border-top: 4px solid var(--c, var(--teal));
}
.level .dist { font-size: 13px; color: var(--muted); font-variant-numeric: tabular-nums; }
.level h3 { font-size: 18px; margin: 4px 0 10px; color: var(--c, var(--teal)); }
.level p { font-size: 14px; }
.level.l0 { --c: #7fa9a3; }
.level.l1 { --c: #9ee0c9; }
.level.l2 { --c: #f2c14e; }
.level.l3 { --c: var(--orange); }
.level.l4 { --c: #ff6b6b; background: linear-gradient(170deg, rgba(255, 107, 107, .12), var(--card) 70%); }
.level .paid { display: inline-block; margin-top: 10px; font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: 6px; background: rgba(255, 255, 255, .08); color: var(--muted); }
.levels-note { text-align: center; color: var(--muted); font-size: 14px; margin-top: 28px; }
@media (max-width: 960px) { .levels { grid-template-columns: 1fr; } .level { display: grid; grid-template-columns: 120px 1fr; column-gap: 16px; } .level .dist { grid-row: span 1; } .level p, .level .paid { grid-column: 2; } .level h3 { margin: 0; } }
@media (max-width: 480px) { .level { grid-template-columns: 1fr; } .level p, .level .paid { grid-column: auto; } .level h3 { margin: 2px 0 8px; } }

/* ---------- merits ---------- */
.merits { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.merit { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 26px; }
.merit .no { font-size: 13px; font-weight: 900; color: var(--orange); letter-spacing: .1em; }
.merit h3 { font-size: 20px; margin: 8px 0 12px; }
.merit p { color: var(--muted); font-size: 15px; }
@media (max-width: 960px) { .merits { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .merits { grid-template-columns: 1fr; } }

.compare { margin-top: 56px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; }
.compare h3 { font-size: 20px; text-align: center; margin-bottom: 20px; }
.compare-table { width: 100%; border-collapse: collapse; font-size: 15px; }
.compare-table th, .compare-table td { padding: 14px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.compare-table tr:last-child th, .compare-table tr:last-child td { border-bottom: 0; }
.compare-table thead th { font-size: 13px; color: var(--muted); font-weight: 700; }
.compare-table thead th.us { color: var(--teal); }
.compare-table tbody th { font-weight: 700; width: 24%; color: var(--muted); font-size: 14px; }
.compare-table td.us { color: var(--text); font-weight: 700; }
.compare-table td.them { color: var(--muted); }
@media (max-width: 640px) {
  .compare { padding: 22px 16px; }
  .compare-table, .compare-table tbody, .compare-table tr, .compare-table th, .compare-table td { display: block; width: 100%; }
  .compare-table thead { display: none; }
  .compare-table tr { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .compare-table tr:last-child { border-bottom: 0; }
  .compare-table th, .compare-table td { border: 0; padding: 2px 0; }
  .compare-table tbody th { width: auto; color: var(--text); font-size: 15px; margin-bottom: 4px; }
  .compare-table td.them::before { content: "位置共有アプリ："; }
  .compare-table td.us::before { content: "酔っ払ナビ："; color: var(--teal); }
}

/* ---------- screens ---------- */
#screens { background: var(--night-2); }
.gallery {
  display: grid; grid-auto-flow: column; grid-auto-columns: 220px; gap: 22px;
  overflow-x: auto; scroll-snap-type: x mandatory; padding: 4px 16px 20px;
  scrollbar-width: thin; scrollbar-color: var(--card-2) transparent;
}
.gallery figure { margin: 0; scroll-snap-align: center; }
.gallery .phone { border-radius: 28px; border-width: 5px; }
.gallery figcaption { text-align: center; font-size: 14px; font-weight: 700; margin-top: 14px; }
.gallery figcaption span { display: block; font-size: 12px; font-weight: 500; color: var(--muted); }
@media (min-width: 1150px) { .gallery { justify-content: center; } }

/* ---------- price ---------- */
.plans { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; max-width: 900px; margin-inline: auto; }
.plan { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 32px 28px; }
.plan.plus { border-color: rgba(242, 122, 56, .5); background: linear-gradient(170deg, rgba(242, 122, 56, .1), var(--card) 60%); }
.plan .name { font-size: 14px; font-weight: 700; color: var(--muted); }
.plan .price { font-size: 30px; font-weight: 900; margin: 4px 0 4px; }
.plan .price small { font-size: 14px; font-weight: 500; color: var(--muted); margin-left: 6px; }
.plan > p:not(.price):not(.name) { color: var(--muted); font-size: 14px; }
.plan ul { list-style: none; padding: 0; margin: 20px 0 0; display: grid; gap: 10px; font-size: 15px; }
.plan li { padding-left: 26px; position: relative; }
.plan li::before { content: ""; position: absolute; left: 2px; top: .55em; width: 12px; height: 7px; border-left: 2px solid var(--teal); border-bottom: 2px solid var(--teal); transform: rotate(-45deg); }
.plan.plus li::before { border-color: var(--orange); }
.plan-note { text-align: center; color: var(--muted); font-size: 13px; margin-top: 20px; }
@media (max-width: 720px) { .plans { grid-template-columns: 1fr; } }

/* ---------- faq ---------- */
#faq { background: var(--night-2); }
.faq { max-width: 800px; margin-inline: auto; display: grid; gap: 12px; }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 0 22px; }
.faq summary { cursor: pointer; list-style: none; padding: 18px 28px 18px 0; font-weight: 700; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before { content: "Q"; color: var(--teal); font-weight: 900; margin-right: 10px; }
.faq summary::after { content: "+"; position: absolute; right: 0; top: 14px; font-size: 22px; color: var(--muted); transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { color: var(--muted); font-size: 15px; padding: 0 0 20px 24px; }

/* ---------- note / final ---------- */
.safety { padding: 0 0 8px; }
.safety .box {
  max-width: 800px; margin: 48px auto 0; padding: 18px 22px; border-radius: 16px;
  border: 1px solid rgba(242, 193, 78, .35); background: rgba(242, 193, 78, .06);
  font-size: 14px; color: var(--muted);
}
.safety .box b { color: #f2c14e; }
.final { text-align: center; background: radial-gradient(700px 400px at 50% 100%, rgba(79, 209, 191, .16), transparent 70%); }
.final .icon { margin: 0 auto 28px; border-radius: 24px; box-shadow: 0 16px 40px rgba(0, 0, 0, .4); }
.final .section-title { margin-bottom: 32px; }
.final .cta { justify-content: center; }

.site-footer { border-top: 1px solid var(--line); padding: 28px 0 36px; font-size: 13px; color: var(--muted); }
.site-footer .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.site-footer nav { display: flex; gap: 18px; flex-wrap: wrap; }
.site-footer a { color: var(--muted); }