/* TalkLens 紹介ページ。アプリと同じ「夜空の写真の背景＋ガラスのカード＋白い大きな文字＋シャンパンゴールドのボタン」。
   スマートフォンの幅を先に作り、広い画面で段組みを増やす。 */
:root {
  --gold: #c9a876;
  --gold-light: #e8cf9e;
  --text: #ffffff;
  --muted: rgba(255, 255, 255, 0.78);
  --glass: rgba(10, 22, 30, 0.46);
  --glass-line: rgba(255, 255, 255, 0.18);
  --radius: 20px;
  --gutter: 16px;
}

* { 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: #0b1f2a;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", sans-serif;
  line-height: 1.75;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--gold-light); }
h1, h2, h3 { line-height: 1.35; margin: 0; font-weight: 700; letter-spacing: 0.01em; word-break: keep-all; overflow-wrap: anywhere; }
p { margin: 0; }

.wrap { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 var(--gutter); }
.wrap.narrow { max-width: 780px; }
.center { text-align: center; }
.sp-only { display: inline; }
@media (min-width: 720px) { .sp-only { display: none; } }

/* ---- 写真の背景（各セクション）。暗い膜を重ねて白い文字を読めるようにする ---- */
.photo {
  position: relative;
  background-color: #0b1f2a;
  background-image: linear-gradient(180deg, rgba(5, 14, 20, 0.55), rgba(5, 14, 20, 0.35) 40%, rgba(5, 14, 20, 0.7)), var(--bg);
  background-size: cover;
  background-position: center;
}

/* ---- ヘッダー ---- */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(6, 16, 22, 0.72);
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--glass-line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 56px; }
.brand { display: flex; align-items: center; gap: 8px; color: var(--text); text-decoration: none; font-weight: 700; font-size: 18px; }
.brand img { border-radius: 8px; }
.header-nav { display: none; gap: 24px; }
.header-nav a { color: var(--muted); text-decoration: none; font-size: 15px; }
.header-nav a:hover { color: var(--text); }
@media (min-width: 720px) { .header-nav { display: flex; } }

/* ---- ボタン ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 52px; padding: 12px 26px; border-radius: 999px;
  font-size: 16px; font-weight: 700; text-decoration: none; text-align: center;
  transition: transform 0.15s ease, filter 0.15s ease;
}
.btn:hover { filter: brightness(1.06); }
.btn:active { transform: scale(0.98); }
.btn-gold { background: linear-gradient(180deg, var(--gold-light), var(--gold)); color: #1d1608; box-shadow: 0 8px 24px rgba(201, 168, 118, 0.35); }
.btn-ghost { background: rgba(255, 255, 255, 0.1); color: var(--text); border: 1px solid rgba(255, 255, 255, 0.45); }
.btn-small { min-height: 40px; padding: 8px 16px; font-size: 14px; }
.btn-large { min-height: 58px; padding: 14px 34px; font-size: 18px; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.cta-row.center { justify-content: center; }
.cta-row .btn { flex: 1 1 200px; }
@media (min-width: 720px) { .cta-row .btn { flex: 0 0 auto; } }

/* ---- ガラスのカード ---- */
.glass {
  background: var(--glass);
  border: 1px solid var(--glass-line);
  border-radius: var(--radius);
  -webkit-backdrop-filter: blur(18px) saturate(1.2); backdrop-filter: blur(18px) saturate(1.2);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}
.card { padding: 22px 20px; }
.card h3 { font-size: 19px; margin-bottom: 8px; }
.card p { color: var(--muted); }
.card-icon { font-size: 28px; margin-bottom: 8px; }

/* ---- 最初の画面 ---- */
.hero { padding: 48px 0 56px; }
.hero-inner { display: grid; gap: 36px; align-items: center; }
.eyebrow { color: var(--gold-light); font-weight: 700; font-size: 14px; letter-spacing: 0.12em; margin-bottom: 12px; }
.hero h1 { font-size: clamp(32px, 8.6vw, 60px); text-shadow: 0 2px 20px rgba(0, 0, 0, 0.35); }
.lead { font-size: clamp(16px, 4.2vw, 19px); color: var(--muted); margin-top: 18px; max-width: 34em; }
.note { color: var(--muted); font-size: 13px; margin-top: 14px; }
.hero-phone { margin: 0 auto; max-width: 280px; }
@media (min-width: 900px) {
  .hero { padding: 88px 0 96px; }
  .hero-inner { grid-template-columns: 1.15fr 0.85fr; }
  .hero-phone { max-width: 330px; }
}

/* 端末の画面（スクリーンショット）を角の丸い枠に入れる */
.hero-phone img, .phone img {
  border-radius: 34px;
  border: 6px solid rgba(255, 255, 255, 0.14);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}

/* ---- セクション ---- */
.section { padding: 64px 0; }
@media (min-width: 900px) { .section { padding: 96px 0; } }
.section-title { font-size: clamp(26px, 6.4vw, 40px); text-align: center; margin-bottom: 14px; text-shadow: 0 2px 18px rgba(0, 0, 0, 0.35); }
.section-lead { color: var(--muted); text-align: center; max-width: 36em; margin: 0 auto 36px; }
.grid-3, .grid-2 { display: grid; gap: 16px; margin-top: 28px; }
@media (min-width: 720px) { .grid-2 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 900px) { .grid-3 { grid-template-columns: repeat(3, 1fr); } }

/* ---- 機能 ---- */
.feature { display: grid; gap: 20px; align-items: center; margin-top: 48px; }
.feature .phone { margin: 0 auto; max-width: 240px; }
.feature-text { padding: 24px 22px; }
.feature-text h3 { font-size: 24px; margin-bottom: 10px; }
.feature-text p { color: var(--muted); }
.feature-num { color: var(--gold-light); font-weight: 700; letter-spacing: 0.1em; margin-bottom: 4px; }
@media (min-width: 900px) {
  .feature { grid-template-columns: 300px 1fr; gap: 56px; margin-top: 72px; }
  .feature.reverse { grid-template-columns: 1fr 300px; }
  .feature.reverse .phone { order: 2; }
  .feature .phone { max-width: 300px; }
  .feature-text { padding: 32px 34px; }
}

/* ---- 使い方 ---- */
.steps { list-style: none; padding: 0; margin: 28px 0 0; display: grid; gap: 16px; counter-reset: step; }
.step-num { color: var(--gold-light); font-weight: 700; letter-spacing: 0.12em; font-size: 14px; margin-bottom: 6px; }
@media (min-width: 900px) { .steps { grid-template-columns: repeat(3, 1fr); } }

/* ---- 料金 ---- */
.plans { display: grid; gap: 16px; }
@media (min-width: 720px) { .plans { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1040px) { .plans { grid-template-columns: repeat(4, 1fr); } }
.plan { position: relative; padding: 24px 20px; }
.plan h3 { font-size: 22px; }
.plan.featured { border-color: var(--gold); box-shadow: 0 0 0 1px var(--gold), 0 14px 40px rgba(0, 0, 0, 0.3); }
.badge { position: absolute; top: -12px; right: 16px; background: var(--gold); color: #1d1608; font-weight: 700; font-size: 12px; padding: 3px 12px; border-radius: 999px; }
.price { margin: 6px 0 14px; font-size: 15px; color: var(--muted); }
.yen { font-size: 34px; font-weight: 800; color: var(--text); margin: 0 2px; letter-spacing: -0.01em; }
.plan ul { margin: 0; padding-left: 1.1em; color: var(--muted); font-size: 14px; }
.plan li + li { margin-top: 6px; }
.credits { margin-top: 16px; }
.credit-list { list-style: none; padding: 0; margin: 14px 0 0; display: grid; gap: 8px; }
@media (min-width: 720px) { .credit-list { grid-template-columns: repeat(3, 1fr); } }
.credit-list li { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; padding: 12px 16px; border-radius: 14px; background: rgba(255, 255, 255, 0.08); }
.credit-list strong { font-size: 20px; }
.fine { color: var(--muted); font-size: 13px; margin-top: 18px; text-align: center; }

/* ---- よくある質問 ---- */
.faq { display: grid; gap: 12px; margin-top: 28px; }
.faq details { padding: 0; }
.faq summary {
  cursor: pointer; list-style: none; padding: 18px 48px 18px 20px; font-weight: 700; position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 20px; top: 50%; transform: translateY(-50%);
  color: var(--gold-light); font-size: 22px; font-weight: 400;
}
.faq details[open] summary::after { content: "−"; }
.faq details p { padding: 0 20px 20px; color: var(--muted); }

/* ---- 最後の案内 ---- */
.final .owner { margin: 40px auto 0; max-width: 560px; text-align: center; }
.final .owner .btn { margin-top: 16px; }

/* ---- 画面の下 ---- */
.site-footer { background: #061016; padding: 36px 0 calc(36px + env(safe-area-inset-bottom)); text-align: center; font-size: 13px; color: var(--muted); }
.footer-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 22px; margin-bottom: 14px; }
.footer-links a, .contact a { color: var(--muted); }
.copyright { margin-top: 8px; }

/* ---- 控えめな表示のアニメーション（画面に入ったときに少しだけ浮かぶ） ---- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }