.idb {
  --idb: #e85d75;
  --idb-ink: #1a1714;
  --idb-muted: rgba(26, 23, 20, 0.56);
  --idb-line: rgba(232, 93, 117, 0.14);
  background: #fff;
  color: var(--idb-ink);
}
.idb-inner {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
}
.idb-sec {
  padding: 72px 24px;
  background: #fff;
}
.idb-sec--soft { background: #fdf6f7; }
.idb-sec h2 {
  margin: 0 0 32px;
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.03em;
  text-align: center;
  color: #2a1820;
}
.idb .iphone { margin: 0; }
.idb .iphone-body {
  position: relative;
  width: 100%;
  max-width: 200px;
  margin: 0 auto;
  padding: 2.4%;
  border-radius: 22px;
  background: linear-gradient(160deg, #2b2d31 0%, #111214 55%, #0a0a0b 100%);
  box-shadow: inset 0 0 0 1.5px rgba(255, 255, 255, 0.12), inset 0 0 0 4px rgba(0, 0, 0, 0.45);
  box-sizing: border-box;
}
.idb .iphone-screen {
  position: relative;
  overflow: hidden;
  border-radius: 18px;
  aspect-ratio: 1170 / 2532;
  background: #111;
}
.idb .iphone-screen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}
.idb .iphone-island {
  position: absolute;
  top: 1.5%;
  left: 50%;
  z-index: 2;
  width: 24%;
  height: 2.7%;
  transform: translateX(-50%);
  border-radius: 999px;
  background: #050505;
  pointer-events: none;
}
.idb .iphone-home {
  position: absolute;
  left: 50%;
  bottom: 1.2%;
  z-index: 2;
  width: 28%;
  height: 0.7%;
  transform: translateX(-50%);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.28);
  pointer-events: none;
}
.idb .iphone-side {
  position: absolute;
  width: 3px;
  background: #1a1b1e;
  border-radius: 2px;
}
.idb .iphone-side--silent { left: -3px; top: 18%; height: 4.5%; }
.idb .iphone-side--vol-up { left: -3px; top: 26%; height: 9%; }
.idb .iphone-side--vol-down { left: -3px; top: 37%; height: 9%; }
.idb .iphone-side--power { right: -3px; top: 28%; height: 12%; }
.idb .iphone figcaption {
  margin-top: 10px;
  text-align: center;
  font-size: 13px;
  font-weight: 700;
}

.idb-hero {
  position: relative;
  overflow: hidden;
  min-height: 640px;
}
.idb-hero-bg,
.idb-hero-bg img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.idb-hero-bg img {
  object-fit: cover;
  object-position: 72% 40%;
}
.idb-hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(255, 248, 249, 0.96) 0%, rgba(255, 248, 249, 0.9) 38%, rgba(255, 248, 249, 0.35) 62%, rgba(255, 248, 249, 0.08) 100%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.18) 0%, rgba(255, 255, 255, 0) 28%);
}
.idb-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 540px);
  gap: 24px;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 52px 24px 60px;
}
.idb-hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.idb-crumb {
  margin-bottom: 16px;
  font-size: 13px;
  color: var(--idb-muted);
}
.idb-crumb a { color: inherit; }
.idb-crumb span { margin: 0 6px; }
.idb-hero-copy h1 {
  margin: 0 0 14px;
  font-size: clamp(28px, 3.4vw, 40px);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.25;
  color: #2a1820;
}
.idb-hero-copy h1 em {
  font-style: normal;
  color: var(--idb);
}
.idb-hero-sub {
  margin: 0 0 20px;
  max-width: 520px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--idb-muted);
}
.idb-values {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
  max-width: 520px;
}
.idb-values li {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  text-align: center;
  color: #2a1820;
}
.idb-ico {
  display: inline-flex;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #fff;
  color: var(--idb);
  box-shadow: 0 6px 16px rgba(232, 93, 117, 0.16);
}
.idb-ico svg { width: 22px; height: 22px; }
.idb-hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}
.idb-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 24px;
  border-radius: 10px;
  background: var(--idb);
  color: #fff;
  font-size: 16px;
  font-weight: 800;
}
.idb-btn:hover { color: #fff; filter: brightness(1.05); }
.idb-link {
  font-size: 15px;
  font-weight: 700;
  color: var(--idb);
}
.idb-checks {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  font-size: 13px;
  color: var(--idb-muted);
}
.idb-checks li {
  display: flex;
  align-items: center;
  gap: 6px;
}
.idb-checks li::before {
  content: "";
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--idb) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M2.5 6.2 5 8.6 9.5 3.6' fill='none' stroke='%23fff' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 10px no-repeat;
}
.idb-hero-phones {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  min-height: 500px;
  padding: 8px 0 4px;
}
.idb-hero-phones .iphone {
  margin: 0;
  flex: 0 0 auto;
  filter: drop-shadow(0 18px 28px rgba(42, 24, 32, 0.32));
}
.idb-hero-phones .iphone-body { max-width: none; }
.idb-hero-phones .iphone--left,
.idb-hero-phones .iphone--right {
  width: clamp(148px, 15.6vw, 188px);
  z-index: 1;
}
.idb-hero-phones .iphone--left { margin-right: clamp(-52px, -5vw, -36px); }
.idb-hero-phones .iphone--right { margin-left: clamp(-52px, -5vw, -36px); }
.idb-hero-phones .iphone--mid {
  width: clamp(196px, 21vw, 248px);
  z-index: 3;
  filter: drop-shadow(0 28px 44px rgba(42, 24, 32, 0.42));
}

.idb-problems {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.idb-problems article {
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--idb-line);
  border-radius: 18px;
  box-shadow: 0 8px 22px rgba(232, 93, 117, 0.06);
}
.idb-problems span {
  display: inline-block;
  margin: 18px 18px 0;
  color: var(--idb);
  font-size: 13px;
  font-weight: 800;
}
.idb-problems h3 {
  margin: 6px 18px 8px;
  font-size: 20px;
  font-weight: 800;
}
.idb-problems p {
  margin: 0 18px 14px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--idb-muted);
}
.idb-problems img {
  display: block;
  width: 100%;
  height: 168px;
  object-fit: cover;
}

.idb-path {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  list-style: none;
  margin: 0;
  padding: 0;
}
.idb-path li {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: 180px;
  padding: 0 8px;
  text-align: center;
}
.idb-path li:not(:last-child)::after {
  content: "→";
  position: absolute;
  top: 22px;
  right: -8px;
  color: #e2c8cd;
  font-size: 18px;
}
.idb-path i {
  display: flex;
  width: 60px;
  height: 60px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #fff;
  color: var(--idb);
  box-shadow: 0 8px 20px rgba(232, 93, 117, 0.12);
}
.idb-path svg { width: 26px; height: 26px; }
.idb-path strong { font-size: 15px; }
.idb-path span {
  font-size: 12px;
  line-height: 1.5;
  color: var(--idb-muted);
}

.idb-plays {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.idb-plays article {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 88px;
  gap: 12px;
  align-items: start;
  padding: 20px;
  background: #fff8f9;
  border-radius: 18px;
}
.idb-plays span {
  grid-column: 1;
  color: var(--idb);
  font-size: 13px;
  font-weight: 800;
}
.idb-plays h3 {
  grid-column: 1;
  margin: 0;
  font-size: 18px;
}
.idb-plays p {
  grid-column: 1;
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--idb-muted);
}
.idb-plays img {
  grid-column: 2;
  grid-row: 1 / 5;
  width: 88px;
  height: 160px;
  object-fit: cover;
  object-position: top;
  border-radius: 12px;
  background: #eee;
}
.idb-plays a {
  grid-column: 1;
  font-size: 14px;
  font-weight: 700;
  color: var(--idb);
}

.idb-coupons {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}
.idb-coupons article {
  overflow: hidden;
  background: #fff;
  border-radius: 18px;
  box-shadow: 0 8px 22px rgba(42, 24, 32, 0.05);
}
.idb-coupons header {
  padding: 14px 18px;
  font-size: 13px;
  font-weight: 800;
}
.idb-coupons .is-blue header { background: #e8f3fb; color: #2a6f9a; }
.idb-coupons .is-peach header { background: #fdece4; color: #c45c3a; }
.idb-coupons .is-mint header { background: #e6f5ee; color: #2d7a58; }
.idb-coupons .is-lilac header { background: #efe8f8; color: #6b4a8f; }
.idb-coupons h3 {
  margin: 16px 18px 10px;
  font-size: 18px;
}
.idb-coupons dl { margin: 0 18px 18px; }
.idb-coupons dl > div {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 8px;
  padding: 8px 0;
  border-top: 1px solid rgba(26, 23, 20, 0.06);
  font-size: 13px;
}
.idb-coupons dt { color: var(--idb-muted); }
.idb-coupons dd { margin: 0; font-weight: 650; }

.idb-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.idb-steps li {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.idb-steps span {
  margin-bottom: 10px;
  color: var(--idb);
  font-size: 13px;
  font-weight: 800;
}
.idb-steps img {
  width: 100%;
  max-width: 180px;
  aspect-ratio: 1170 / 2532;
  object-fit: cover;
  object-position: top;
  border-radius: 16px;
  box-shadow: 0 10px 24px rgba(42, 24, 32, 0.08);
}
.idb-steps strong { margin-top: 12px; font-size: 14px; }

.idb-views {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}
.idb-views .iphone-body { max-width: 176px; }

.idb-wecom {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.idb-wecom article {
  padding: 22px 22px 0;
  background: #fdf6f7;
  border-radius: 18px;
  overflow: hidden;
}
.idb-wecom h3 { margin: 0 0 8px; font-size: 18px; }
.idb-wecom p {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--idb-muted);
}
.idb-wecom img {
  display: block;
  width: 70%;
  max-width: 220px;
  margin: 0 auto;
  border-radius: 16px 16px 0 0;
}

.idb-scenes {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.idb-scenes article {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 24px;
  align-items: center;
  padding: 22px;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 8px 22px rgba(232, 93, 117, 0.06);
}
.idb-scenes span {
  color: var(--idb);
  font-size: 13px;
  font-weight: 800;
}
.idb-scenes h3 { margin: 6px 0 8px; font-size: 20px; }
.idb-scenes p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--idb-muted);
}
.idb-scenes ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: sc;
  font-size: 13px;
  font-weight: 700;
}
.idb-scenes ol li { counter-increment: sc; }
.idb-scenes ol li::before {
  content: counter(sc) ". ";
  color: var(--idb);
}
.idb-scenes img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 12px;
}

.idb-faq-wrap { max-width: 760px; }
.idb-faq-wrap h2 { text-align: left; }
.idb-faq details { border-bottom: 1px solid var(--idb-line); }
.idb-faq summary {
  padding: 16px 0;
  font-size: 16px;
  font-weight: 750;
  cursor: pointer;
  list-style: none;
}
.idb-faq summary::-webkit-details-marker { display: none; }
.idb-faq summary::after {
  content: "+";
  float: right;
  color: var(--idb);
}
.idb-faq details[open] summary::after { content: "–"; }
.idb-faq p {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--idb-muted);
}
.idb-more {
  margin: 28px 0 0;
  text-align: center;
}
.idb-more a { font-weight: 700; color: var(--idb); }

@media (max-width: 1080px) {
  .idb-hero-inner { grid-template-columns: 1fr; padding-bottom: 40px; }
  .idb-hero-phones { min-height: 0; max-width: 460px; margin: 0 auto; }
  .idb-hero-phones .iphone--left,
  .idb-hero-phones .iphone--right { width: clamp(132px, 28vw, 160px); }
  .idb-hero-phones .iphone--mid { width: clamp(168px, 36vw, 210px); }
  .idb-plays { grid-template-columns: 1fr 1fr; }
  .idb-coupons { grid-template-columns: 1fr 1fr; }
  .idb-steps, .idb-views { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .idb-wecom { grid-template-columns: 1fr; }
  .idb-scenes article { grid-template-columns: 1fr; }
  .idb-path li:not(:last-child)::after { display: none; }
}
@media (max-width: 720px) {
  .idb-sec { padding: 48px 16px; }
  .idb-values { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .idb-problems, .idb-plays, .idb-coupons { grid-template-columns: 1fr; }
}