.instagram-label { display: inline-block; padding: 3px 9px; border-radius: 6px; color: #52483f; background: #f1ece6; font-size: 12px; font-weight: 700; vertical-align: middle; }
.instagram-next[aria-disabled="true"] { cursor: default; }
.instagram-next .instagram-label { display: inline-block; margin-left: 6px; }
.photo-viewer .next-steps .instagram-label { display: inline-block; color: #52483f; }
/* 正本: poc/private/instagram-teaser-mock/index.html。説明用外枠は含めない。 */
.instagram-home, .instagram-lp {
  --ink: #111; --muted: #5E6A70; --line: #E3E9EC;
  --navy: #123A4C; --dark: #0E2B39; --dark-2: #16394A;
  --accent: #12BFC7; --accent-on-dark: #7FE3E8; --tint: #EAF7F8;
  --on-dark: #FFFFFF; --on-dark-2: #C9D6DD; --radius: 14px;
  font-family: "Zen Kaku Gothic New", system-ui, sans-serif; color: var(--ink);
  line-height: 1.8; letter-spacing: .02em; font-size: 16px; font-weight: 400;
}
.instagram-home *, .instagram-lp * { box-sizing: border-box; }
.instagram-lp small { line-height: inherit; font-weight: inherit; letter-spacing: inherit; }
.instagram-lp h2, .instagram-lp h3 { letter-spacing: inherit; }
.instagram-home h2, .instagram-lp h2, .instagram-lp h3 {
  font-feature-settings: normal; word-break: normal; text-wrap: wrap; font-weight: 700;
}
.instagram-home { margin-inline: -16px; }
.instagram-lp { max-width: 720px; min-width: 0; margin: 0 auto; }
.instagram-lp p { margin: 0 0 1em; }
.instagram-lp a { text-decoration: underline; }
.instagram-test-banner { padding: 16px; margin-bottom: 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface, #fff); }
.instagram-test-banner a { margin-left: 4px; text-decoration: underline; }
.instagram-test-link { display: block; margin: 0 16px 12px; font-size: 13px; text-decoration: underline; }
@media (max-width: 720px) { .instagram-lp { margin-inline: -16px; } }
.instagram-teaser { position: relative; margin: 12px 16px; border-radius: 18px; overflow: hidden; background: radial-gradient(120% 90% at 100% 0%, #1D5367 0%, var(--dark) 55%); color: var(--on-dark); padding: 20px 16px 18px; }
.instagram-teaser .instagram-eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 11px; font-weight: 700; letter-spacing: .14em; color: var(--accent-on-dark); }
.instagram-teaser .instagram-eyebrow::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px rgba(18,191,199,.22); }
.instagram-teaser h2 { margin: 8px 0 4px; font-size: 21px; line-height: 1.45; letter-spacing: .01em; }
.instagram-teaser p { margin: 0; font-size: 13px; color: var(--on-dark-2); line-height: 1.7; }
.instagram-fan { --fan-w: min(132px, 30vw); position: relative; height: calc(var(--fan-w) * 4 / 3 + 20px); margin: 16px 0 14px; }
.instagram-fan img { position: absolute; top: 0; width: var(--fan-w); height: auto; aspect-ratio: 3/4; object-fit: cover; border-radius: 10px; box-shadow: 0 12px 28px rgba(0,0,0,.38); border: 2px solid rgba(255,255,255,.9); }
.instagram-fan img:nth-child(1) { left: 50%; transform: translateX(-118%) rotate(-8deg); top: 14px; }
.instagram-fan img:nth-child(2) { left: 50%; transform: translateX(-50%); z-index: 2; }
.instagram-fan img:nth-child(3) { left: 50%; transform: translateX(18%) rotate(8deg); top: 14px; }
.instagram-fan-caption { text-align: center; font-size: 11px; color: var(--on-dark-2); letter-spacing: .08em; margin: -4px 0 14px; }
.instagram-cta { display: flex; justify-content: center; align-items: center; gap: 6px; min-height: 48px; border-radius: 12px; background: var(--accent); color: #0B1A1E; font-weight: 700; font-size: 15px; text-decoration: none; }
.instagram-cta::after { content: "→"; }

/* ===== ② 紹介ページ ===== */
.instagram-lp { background: #fff; }
.instagram-lp-back { display: block; padding: 14px 16px 0; color: var(--navy); font-size: 14px; text-decoration: none; }
.instagram-hero { background: radial-gradient(130% 80% at 100% 0%, #1D5367 0%, var(--dark) 60%); color: var(--on-dark); padding: 28px 20px 30px; margin-top: 10px; }
.instagram-badge { display: inline-block; padding: 4px 12px; border-radius: 999px; background: rgba(127,227,232,.14); color: var(--accent-on-dark); font-size: 11px; font-weight: 700; letter-spacing: .14em; }
.instagram-hero h2 { font-size: 29px; line-height: 1.4; margin: 14px 0 12px; letter-spacing: 0; }
.instagram-hero h2 em { font-style: normal; color: var(--accent-on-dark); }
.instagram-hero .instagram-lead { color: var(--on-dark-2); font-size: 14px; margin: 0; }
.instagram-phone { width: 236px; margin: 26px auto 0; border-radius: 30px; background: #0A1F29; padding: 10px; box-shadow: 0 24px 60px rgba(0,0,0,.45), inset 0 0 0 1px rgba(255,255,255,.08); }
.instagram-phone-head { display: flex; align-items: center; gap: 8px; padding: 6px 6px 8px; color: #fff; font-size: 11px; }
.instagram-phone-head .instagram-avatar { width: 22px; height: 22px; border-radius: 50%; background: linear-gradient(135deg, #12BFC7, #7FE3E8); }
.instagram-phone-head b { font-weight: 700; }
.instagram-slider { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; border-radius: 4px; scrollbar-width: none; }
.instagram-slider::-webkit-scrollbar { display: none; }
.instagram-slider img { flex: 0 0 100%; width: 100%; aspect-ratio: 3/4; object-fit: cover; scroll-snap-align: start; display: block; }
.instagram-phone-foot { display: flex; justify-content: center; gap: 4px; padding: 8px 0 4px; }
.instagram-phone-foot i { width: 5px; height: 5px; border-radius: 50%; background: rgba(255,255,255,.3); }
.instagram-phone-foot i.instagram-on { background: var(--accent); }
.instagram-counter { position: absolute; }

.instagram-authority { margin: 26px 0 0; padding: 16px; border-radius: 14px; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.12); }
.instagram-authority small { display: block; font-size: 11px; letter-spacing: .12em; color: var(--accent-on-dark); font-weight: 700; }
.instagram-authority p { margin: 6px 0 0; font-size: 14px; color: #fff; font-weight: 700; line-height: 1.6; }
.instagram-authority p a:not(.button):not(.primary):not(.secondary) { color: var(--accent-on-dark); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }

.instagram-sec { padding: 40px 20px; }
.instagram-sec.instagram-tint { background: var(--tint); }
.instagram-sec h3 { font-size: 23px; line-height: 1.45; margin: 12px 0 10px; letter-spacing: 0; }
.instagram-sec .instagram-sub { color: var(--muted); font-size: 14px; margin: 0; }
.instagram-sec .instagram-badge { background: var(--tint); color: #0E7C82; }
.instagram-sec.instagram-tint .instagram-badge { background: #fff; }

.instagram-examples { margin-top: 22px; display: grid; gap: 26px; }
.instagram-example-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 8px; }
.instagram-example-head b { font-size: 14px; }
.instagram-example-head span { font-size: 12px; color: var(--muted); }
.instagram-ex-slider { display: flex; gap: 10px; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none; margin: 0 -20px; padding: 0 20px 4px; }
.instagram-ex-slider::-webkit-scrollbar { display: none; }
.instagram-ex-slider img { flex: 0 0 78%; aspect-ratio: 3/4; object-fit: cover; border-radius: 12px; scroll-snap-align: center; box-shadow: 0 8px 22px rgba(14,43,57,.14); }
.instagram-ex-slider.instagram-single img { flex-basis: 100%; }
.instagram-dots { display: flex; justify-content: center; gap: 6px; margin-top: 10px; }
.instagram-dots i { width: 6px; height: 6px; border-radius: 50%; background: #C9D4D8; }
.instagram-dots i.instagram-on { background: var(--navy); width: 18px; border-radius: 3px; }

.instagram-contrast { margin-top: 22px; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.instagram-contrast div { border-radius: 14px; padding: 16px 14px; }
.instagram-contrast .instagram-reel { background: #fff; border: 1px solid var(--line); }
.instagram-contrast .instagram-carousel { background: var(--dark); color: #fff; }
.instagram-contrast small { font-size: 11px; font-weight: 700; letter-spacing: .1em; color: var(--muted); }
.instagram-contrast .instagram-carousel small { color: var(--accent-on-dark); }
.instagram-contrast b { display: block; font-size: 17px; margin: 4px 0 6px; line-height: 1.4; }
.instagram-contrast p { margin: 0; font-size: 12px; line-height: 1.7; color: var(--muted); }
.instagram-contrast .instagram-carousel p { color: var(--on-dark-2); }

.instagram-figure { margin-top: 14px; display: grid; gap: 10px; }
.instagram-figure div { display: grid; grid-template-columns: 92px 1fr; gap: 12px; align-items: center; background: #fff; border-radius: 14px; padding: 14px; border: 1px solid var(--line); }
.instagram-figure b { font-size: 28px; line-height: 1; color: var(--navy); letter-spacing: 0; }
.instagram-figure b small { font-size: 14px; }
.instagram-figure p { margin: 0; font-size: 13px; line-height: 1.6; }
.instagram-figure cite { display: block; font-style: normal; font-size: 10px; color: var(--muted); margin-top: 4px; line-height: 1.5; }

.instagram-steps { margin: 22px 0 0; padding: 0; list-style: none; display: grid; gap: 12px; }
.instagram-steps li { display: grid; grid-template-columns: 44px 1fr; gap: 12px; align-items: start; }
.instagram-steps .instagram-num { width: 44px; height: 44px; border-radius: 12px; background: var(--dark); color: var(--accent-on-dark); display: grid; place-items: center; font-weight: 700; font-size: 15px; }
.instagram-steps b { display: block; font-size: 15px; }
.instagram-steps p { margin: 2px 0 0; font-size: 13px; color: var(--muted); line-height: 1.7; }

.instagram-closing { background: var(--dark); color: #fff; text-align: center; padding: 40px 20px 36px; }
.instagram-closing h3 { font-size: 24px; margin: 12px 0 8px; line-height: 1.45; }
.instagram-closing p { color: var(--on-dark-2); font-size: 13px; margin: 0; }
.instagram-closing .instagram-note { margin-top: 16px; font-size: 11px; color: #8FA4AE; }
.instagram-closing .instagram-home-link { display: inline-flex; margin-top: 20px; min-height: 48px; align-items: center; padding: 0 26px; border-radius: 12px; border: 1.5px solid rgba(255,255,255,.4); color: #fff; text-decoration: none; font-weight: 700; }

.instagram-fan[hidden], .instagram-home [hidden], .instagram-lp [hidden] { display: none; }
.instagram-slider, .instagram-ex-slider { position: relative; overscroll-behavior-x: contain; }
.instagram-slider img, .instagram-ex-slider img { min-width: 0; height: auto; }
.instagram-phone-head b { min-width: 0; overflow-wrap: anywhere; }