/* 思应信息保管箱 · Dynadot-inspired marketing overrides */
:root {
  --ik-navy: #0B1B4D;
  --ik-blue: #2B8CF5;
  --ik-tint: #EAF3FF;
  --ik-ink: #4A5568;
  --ik-white: #ffffff;
  --ik-deep: #071536;
  --ik-line: rgba(11, 27, 77, 0.12);
  --ik-radius: 20px;
  --ik-shadow: 0 18px 50px rgba(11, 27, 77, 0.12);
  --ik-theme: var(--ik-blue);
}

.ik-container {
  width: min(1120px, calc(100% - 2.5rem));
  margin-inline: auto;
}

.ik-section {
  padding: 5.5rem 0;
  background: var(--ik-white);
}
.ik-section--tint { background: var(--ik-tint); }
.ik-section--deep {
  background: linear-gradient(160deg, #0B1B4D 0%, #132a6b 55%, #1a3f8f 100%);
  color: #fff;
}

.ik-section__head { max-width: 720px; margin-bottom: 2.5rem; }
.ik-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ik-blue);
  margin-bottom: 0.75rem;
}
.ik-eyebrow--light { color: #9ec5ff; }
.ik-h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  line-height: 1.15;
  font-weight: 800;
  color: var(--ik-navy);
  margin: 0 0 0.75rem;
}
.ik-h2--light { color: #fff; }
.ik-lead {
  color: var(--ik-ink);
  font-size: 1.05rem;
  line-height: 1.7;
  margin: 0;
}

/* Hero */
.ik-hero {
  padding: 4.5rem 0 3.5rem;
  background:
    radial-gradient(1200px 480px at 10% -10%, rgba(43, 140, 245, 0.18), transparent 60%),
    linear-gradient(180deg, #F5F9FF 0%, #FFFFFF 70%);
}
.ik-hero--list { padding-bottom: 4rem; text-align: left; }
.ik-hero__grid {
  display: grid;
  gap: 2.5rem;
  align-items: center;
}
@media (min-width: 960px) {
  .ik-hero__grid { grid-template-columns: 1.05fr 0.95fr; }
}
.ik-pills { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-bottom: 1.25rem; }
.ik-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 0.95rem;
  border-radius: 999px;
  background: rgba(43, 140, 245, 0.12);
  color: var(--ik-navy);
  font-size: 0.85rem;
  font-weight: 700;
}
.ik-pill--ghost {
  background: transparent;
  border: 1px solid var(--ik-line);
  color: var(--ik-ink);
}
.ik-pill--sm { font-size: 0.75rem; padding: 0.3rem 0.7rem; }
.ik-hero__title {
  font-size: clamp(2.4rem, 5vw, 3.75rem);
  line-height: 1.08;
  font-weight: 850;
  color: var(--ik-navy);
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}
.ik-hero__hook {
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
  line-height: 1.7;
  color: var(--ik-ink);
  margin: 0 0 1.75rem;
  max-width: 36rem;
}
.ik-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-bottom: 2rem;
}
.ik-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none !important;
  border: 1px solid transparent;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.ik-btn--lg { min-height: 3.25rem; padding: 0.9rem 1.6rem; font-size: 1rem; }
.ik-btn--sm { min-height: 2.35rem; padding: 0.45rem 1rem; font-size: 0.9rem; }
.ik-btn--primary {
  background: var(--ik-blue);
  color: #fff !important;
  box-shadow: 0 10px 28px rgba(43, 140, 245, 0.35);
  min-width: min(100%, 280px);
}
.ik-btn--primary:hover { transform: translateY(-1px); background: #1f7ae0; }
.ik-btn--ghost {
  background: #fff;
  color: var(--ik-navy) !important;
  border-color: var(--ik-line);
}
.ik-btn--ghost:hover { border-color: var(--ik-blue); }

.ik-trust {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.7rem;
}
.ik-trust__item {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  color: var(--ik-ink);
  font-size: 0.95rem;
}
.ik-trust__icon {
  width: 1.35rem;
  height: 1.35rem;
  border-radius: 999px;
  background: rgba(43, 140, 245, 0.15);
  color: var(--ik-blue);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  flex: none;
  margin-top: 0.1rem;
}

.ik-poster-card {
  width: 100%;
  border-radius: 28px;
  box-shadow: var(--ik-shadow);
  background: #fff;
  display: block;
}

/* Fields */
.ik-field-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}
.ik-field-card {
  background: #fff;
  border-radius: 16px;
  padding: 1.1rem 1.15rem;
  box-shadow: 0 1px 0 var(--ik-line);
  border-top: 1px solid transparent;
  background-image: linear-gradient(#fff, #fff), linear-gradient(90deg, transparent, rgba(43,140,245,.35), transparent);
  background-origin: border-box;
  background-clip: padding-box, border-box;
}
.ik-field-card__top {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.65rem;
}
.ik-field-card__label {
  font-weight: 700;
  color: var(--ik-navy);
}
.ik-badge {
  font-size: 0.7rem;
  font-weight: 700;
  color: #fff;
  background: var(--ik-theme, var(--ik-blue));
  border-radius: 999px;
  padding: 0.15rem 0.5rem;
  align-self: start;
}
.ik-field-card__meta { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.ik-chip {
  font-size: 0.75rem;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: var(--ik-tint);
  color: var(--ik-navy);
}
.ik-chip--muted { background: #f1f5f9; color: var(--ik-ink); }
.ik-actions-note {
  margin-top: 1.25rem;
  color: var(--ik-ink);
  font-size: 0.95rem;
}

/* Steps — borderless 3-col feel */
.ik-steps {
  list-style: none;
  margin: 0;
  padding: 2rem 0 0;
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
  border-top: 1px solid transparent;
  background-image: linear-gradient(90deg, transparent, rgba(11,27,77,.18), transparent);
  background-size: 100% 1px;
  background-repeat: no-repeat;
  background-position: top center;
}
@media (min-width: 800px) {
  .ik-steps { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1100px) {
  .ik-steps { grid-template-columns: repeat(3, 1fr); }
}
.ik-step { display: flex; gap: 1rem; align-items: flex-start; }
.ik-step__num {
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 999px;
  background: var(--ik-navy);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  flex: none;
}
.ik-step__text {
  margin: 0;
  color: var(--ik-ink);
  line-height: 1.65;
}

/* Who + FAQ */
.ik-split {
  display: grid;
  gap: 2rem;
}
@media (min-width: 900px) {
  .ik-split { grid-template-columns: 1fr 1.1fr; align-items: start; }
}
.ik-who { display: grid; gap: 1rem; margin-top: 1rem; }
.ik-who__row {
  background: #fff;
  border-radius: 16px;
  padding: 1.1rem 1.2rem;
  display: grid;
  gap: 0.35rem;
}
.ik-who__row strong { color: var(--ik-navy); }
.ik-who__row span { color: var(--ik-ink); line-height: 1.6; }

.ik-faq {
  background: linear-gradient(165deg, #0B1B4D, #16306f 60%, #1d4599);
  border-radius: 24px;
  padding: 1.75rem 1.5rem;
  color: #fff;
  box-shadow: var(--ik-shadow);
}
.ik-accordion { margin-top: 1rem; display: grid; gap: 0.65rem; }
.ik-acc {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 14px;
  padding: 0.2rem 0.9rem;
}
.ik-acc summary {
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  padding: 0.85rem 0;
}
.ik-acc summary::-webkit-details-marker { display: none; }
.ik-acc summary::after {
  content: "+";
  float: right;
  opacity: 0.8;
}
.ik-acc[open] summary::after { content: "–"; }
.ik-acc p {
  margin: 0 0 0.95rem;
  color: rgba(255,255,255,0.82);
  line-height: 1.65;
  font-size: 0.95rem;
}

/* Story */
.ik-story { display: grid; gap: 1.25rem; }
.ik-quote {
  margin: 0;
  padding: 1.4rem 1.5rem;
  border-radius: 18px;
  background: var(--ik-tint);
  border-left: 4px solid var(--ik-blue);
}
.ik-quote p {
  margin: 0;
  color: var(--ik-ink);
  line-height: 1.8;
}

.ik-poster-lg {
  width: min(720px, 100%);
  display: block;
  margin: 0 auto;
  border-radius: 24px;
  box-shadow: var(--ik-shadow);
}

/* Related + cards */
.ik-related, .ik-scene-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}
.ik-related__card, .ik-scene-card {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  text-decoration: none !important;
  color: inherit;
  background: #fff;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(11, 27, 77, 0.08);
  border-top: 3px solid var(--ik-theme, var(--ik-blue));
  transition: transform .15s ease, box-shadow .15s ease;
}
.ik-related__card { padding: 1.25rem 1.3rem; }
.ik-related__card:hover, .ik-scene-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 40px rgba(11, 27, 77, 0.14);
}
.ik-related__card strong, .ik-scene-card h3 {
  color: var(--ik-navy);
  font-size: 1.15rem;
  margin: 0;
}
.ik-related__card span:last-child,
.ik-scene-card p {
  color: var(--ik-ink);
  font-size: 0.95rem;
  line-height: 1.55;
  margin: 0;
}
.ik-scene-card__media {
  aspect-ratio: 16 / 9;
  background: linear-gradient(180deg, #EAF3FF 0%, #fff 100%);
  overflow: hidden;
}
.ik-scene-card__media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  display: block;
}
.ik-scene-card__body { padding: 1.15rem 1.2rem 1.35rem; display: grid; gap: 0.55rem; }
.ik-scene-card__more {
  color: var(--ik-blue);
  font-weight: 700;
  font-size: 0.9rem;
}

.ik-cta-final { text-align: center; }
.ik-cta-final__text {
  color: rgba(255,255,255,0.85);
  margin: 0 0 1.5rem;
}
.ik-qr {
  display: block;
  margin: 0 auto;
  max-width: 100%;
  height: auto;
  box-sizing: border-box;
  width: min(280px, 70vw);
  background: #fff;
  border-radius: 16px;
  padding: 0.75rem;
  box-shadow: var(--ik-shadow);
}

/* Sticky CTA */
.ik-sticky-cta {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--ik-line);
}
.ik-sticky-cta__inner {
  width: min(1120px, calc(100% - 1.5rem));
  margin: 0 auto;
  min-height: 3.4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.ik-sticky-cta__text {
  color: var(--ik-navy);
  font-weight: 700;
  font-size: 0.95rem;
}

/* Soften theme page header spacing when present */
.section.mt-4:has(.ik-hero),
body:has(.ik-hero) .page-header { /* no-op fallback */ }

/* Ensure prose pages keep readable width */
.ik-prose-page {
  padding: 3.5rem 0 5rem;
}
.ik-prose-page .ik-container {
  max-width: 760px;
}
.ik-prose-page h2 {
  color: var(--ik-navy);
  font-weight: 800;
  margin-top: 2.2rem;
}
.ik-prose-page p, .ik-prose-page li {
  color: var(--ik-ink);
  line-height: 1.75;
}

/* ========== Home (Dynadot-like dark hero) ========== */
.ik-home-center { text-align: center; margin-inline: auto; }
.ik-home-center .ik-lead { margin-inline: auto; }

.ik-home-hero {
  position: relative;
  overflow: hidden;
  padding: 5.5rem 0 2.5rem;
  background:
    radial-gradient(900px 420px at 50% -10%, rgba(88, 120, 255, 0.28), transparent 55%),
    linear-gradient(165deg, #071536 0%, #0B1B4D 42%, #101f4a 72%, #0a1433 100%);
  color: #fff;
}
.ik-home-hero__glow {
  position: absolute;
  top: 8%;
  width: 180px;
  height: 70%;
  pointer-events: none;
  filter: blur(40px);
  opacity: 0.55;
  background: linear-gradient(180deg, rgba(120, 90, 255, 0.55), rgba(43, 140, 245, 0.15), transparent);
}
.ik-home-hero__glow--l { left: -40px; transform: rotate(8deg); }
.ik-home-hero__glow--r { right: -40px; transform: rotate(-8deg); background: linear-gradient(180deg, rgba(43, 140, 245, 0.5), rgba(150, 100, 255, 0.18), transparent); }

.ik-home-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 2.75rem;
  align-items: center;
  text-align: center;
  padding-bottom: 2.5rem;
}
@media (min-width: 960px) {
  .ik-home-hero__inner {
    grid-template-columns: 1.05fr 0.95fr;
    text-align: left;
    gap: 3rem;
  }
}

.ik-home-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 1.05rem;
  border-radius: 999px;
  border: 1px solid rgba(158, 197, 255, 0.35);
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(8px);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  margin-bottom: 1.35rem;
  color: #bfdbfe;
  background-image: linear-gradient(90deg, #93c5fd, #c4b5fd, #a5b4fc);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.04), 0 0 24px rgba(99, 102, 241, 0.18);
}

.ik-home-title {
  font-size: clamp(2.6rem, 6vw, 4.25rem);
  line-height: 1.06;
  font-weight: 850;
  letter-spacing: -0.03em;
  color: #fff;
  margin: 0 0 1.15rem;
}
.ik-home-grad {
  background: linear-gradient(100deg, #60a5fa 0%, #818cf8 45%, #a78bfa 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}
.ik-home-sub {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.78);
  margin: 0 0 1.85rem;
  max-width: 34rem;
}
@media (min-width: 960px) {
  .ik-home-sub { margin-left: 0; }
}
.ik-home-hero__copy { display: flex; flex-direction: column; align-items: center; }
@media (min-width: 960px) {
  .ik-home-hero__copy { align-items: flex-start; }
}

.ik-home-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.35rem;
  align-items: center;
  justify-content: center;
}
.ik-home-cta-row--center { justify-content: center; }
@media (min-width: 960px) {
  .ik-home-hero__copy .ik-home-cta-row { justify-content: flex-start; }
}
.ik-home-cta-primary {
  min-width: min(100%, 300px);
  background: #1d4ed8 !important;
  box-shadow: 0 12px 36px rgba(37, 99, 235, 0.45);
}
.ik-home-cta-primary:hover { background: #1e40af !important; }
.ik-home-cta-link {
  color: #60a5fa !important;
  font-weight: 700;
  text-decoration: none !important;
  font-size: 1rem;
}
.ik-home-cta-link:hover { color: #93c5fd !important; }

.ik-home-hero__media {
  position: relative;
  z-index: 1;
}
.ik-home-hero__img {
  width: 100%;
  max-width: 560px;
  margin-inline: auto;
  display: block;
  border-radius: 24px;
  box-shadow: 0 28px 60px rgba(0, 0, 0, 0.35);
}

.ik-home-trust {
  position: relative;
  z-index: 1;
  list-style: none;
  margin: 0;
  padding: 1.35rem 0 0.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  justify-content: center;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}
.ik-home-trust li {
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.ik-home-trust li::before {
  content: "";
  display: inline-block;
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 999px;
  background: #60a5fa;
  margin-right: 0.55rem;
  vertical-align: middle;
  box-shadow: 0 0 10px rgba(96, 165, 250, 0.8);
}

/* Capabilities — borderless 3-col with soft glow cards */
.ik-home-caps { padding-top: 5rem; padding-bottom: 5rem; }
.ik-home-caps__grid {
  list-style: none;
  margin: 0;
  padding: 2.25rem 0 0;
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
  border-top: 1px solid transparent;
  background-image: linear-gradient(90deg, transparent, rgba(11, 27, 77, 0.18), transparent);
  background-size: 100% 1px;
  background-repeat: no-repeat;
  background-position: top center;
}
@media (min-width: 800px) {
  .ik-home-caps__grid { grid-template-columns: repeat(3, 1fr); gap: 1.75rem; }
}
.ik-home-cap {
  background: #fff;
  border-radius: 22px;
  padding: 1.6rem 1.45rem;
  box-shadow: 0 10px 36px rgba(43, 140, 245, 0.1);
  border: 1px solid rgba(43, 140, 245, 0.08);
}
.ik-home-cap h3 {
  margin: 0 0 0.65rem;
  color: var(--ik-navy);
  font-size: 1.2rem;
  font-weight: 800;
}
.ik-home-cap p {
  margin: 0;
  color: var(--ik-ink);
  line-height: 1.7;
  font-size: 0.98rem;
}

/* Group cards — colored top + white body */
.ik-home-groups__list {
  display: grid;
  gap: 2rem;
}
.ik-home-group-card {
  display: grid;
  gap: 0;
  border-radius: 24px;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 16px 48px rgba(11, 27, 77, 0.1);
}
@media (min-width: 900px) {
  .ik-home-group-card {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: stretch;
  }
  .ik-home-group-card--flip .ik-home-group-card__media { order: 2; }
  .ik-home-group-card--flip .ik-home-group-card__body { order: 1; }
}
.ik-home-group-card__media {
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}
.ik-home-group-card__media img {
  width: min(100%, 420px);
  height: auto;
  display: block;
  border-radius: 16px;
}
.ik-home-group-card__media--life {
  background: linear-gradient(145deg, #e8f5ff 0%, #f5f0ff 55%, #eef6ff 100%);
}
.ik-home-group-card__media--field {
  background: linear-gradient(145deg, #eaf8f0 0%, #e8f1ff 55%, #f3f7ff 100%);
}
.ik-home-group-card__media--ledger {
  background: linear-gradient(145deg, #eef0ff 0%, #e8f4ff 50%, #f6f0ff 100%);
}
.ik-home-group-card__body {
  padding: 1.75rem 1.6rem 1.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  justify-content: center;
}
.ik-home-group-card__body h3 {
  margin: 0;
  color: var(--ik-navy);
  font-size: 1.55rem;
  font-weight: 800;
}
.ik-home-group-card__body p {
  margin: 0;
  color: var(--ik-ink);
  line-height: 1.7;
}
.ik-home-group-card__body .ik-home-cta-link {
  color: var(--ik-blue) !important;
  margin-top: 0.35rem;
  align-self: flex-start;
}

/* Featured rail */
.ik-home-rail {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(240px, 280px);
  gap: 1.1rem;
  overflow-x: auto;
  padding: 0.35rem 0.15rem 1rem;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}
.ik-home-rail__card {
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  text-decoration: none !important;
  color: inherit;
  background: #fff;
  border-radius: 18px;
  overflow: hidden;
  border-top: 3px solid var(--ik-theme, var(--ik-blue));
  box-shadow: 0 10px 30px rgba(11, 27, 77, 0.08);
  transition: transform .15s ease, box-shadow .15s ease;
}
.ik-home-rail__card:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 40px rgba(11, 27, 77, 0.14);
}
.ik-home-rail__media {
  aspect-ratio: 16 / 9;
  background: linear-gradient(180deg, #EAF3FF 0%, #fff 100%);
  overflow: hidden;
}
.ik-home-rail__media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}
.ik-home-rail__body {
  padding: 1rem 1.05rem 1.2rem;
  display: grid;
  gap: 0.4rem;
}
.ik-home-rail__body strong {
  color: var(--ik-navy);
  font-size: 1.05rem;
}
.ik-home-rail__body span {
  color: var(--ik-ink);
  font-size: 0.9rem;
  line-height: 1.5;
}
.ik-home-rail__more { margin: 0.5rem 0 0; }

.ik-home-faq-wrap { padding-top: 2rem; padding-bottom: 2rem; background: #fff; }
.ik-home-faq { max-width: 920px; margin-inline: auto; }

/* Soften theme leftover spacing on home */
body.home .section:has(.ik-home-hero),
body:has(.ik-home-hero) > main > .section:first-child { padding: 0; }


/* ========== how-to / boundaries pages (reuse home hero + shared ik-*) ========== */
.ik-page-hero__inner {
  grid-template-columns: 1fr !important;
  max-width: 820px;
  margin-inline: auto;
  text-align: center;
  padding-bottom: 2rem;
}
.ik-page-hero__copy {
  align-items: center !important;
  width: 100%;
}
.ik-page-hero .ik-home-sub {
  margin-inline: auto;
  max-width: 38rem;
}
.ik-page-hero .ik-home-cta-row {
  justify-content: center !important;
}
.ik-home-center {
  text-align: center;
  margin-inline: auto;
}
.ik-home-center .ik-lead {
  margin-inline: auto;
  max-width: 40rem;
}

/* how-to steps */
.ik-howto-steps { padding-top: 4.5rem; padding-bottom: 4.5rem; }
.ik-howto-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}
@media (min-width: 900px) {
  .ik-howto-grid { grid-template-columns: repeat(3, 1fr); gap: 1.75rem; }
}
.ik-howto-card {
  background: #fff;
  border-radius: 22px;
  padding: 1.75rem 1.5rem 1.65rem;
  box-shadow: 0 12px 40px rgba(43, 140, 245, 0.1);
  border: 1px solid rgba(43, 140, 245, 0.08);
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  position: relative;
}
.ik-howto-card__num {
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 999px;
  background: linear-gradient(145deg, #1d4ed8, #6366f1);
  color: #fff;
  font-weight: 850;
  font-size: 1.15rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.35);
  margin-bottom: 0.35rem;
}
.ik-howto-card h3 {
  margin: 0;
  color: var(--ik-navy);
  font-size: 1.25rem;
  font-weight: 800;
}
.ik-howto-card > p {
  margin: 0;
  color: var(--ik-ink);
  line-height: 1.7;
  font-size: 0.98rem;
}
.ik-howto-card__hint {
  margin-top: 0.25rem !important;
  padding-top: 0.85rem;
  border-top: 1px solid rgba(11, 27, 77, 0.08);
  font-size: 0.92rem !important;
  color: #64748b !important;
}
.ik-howto-modes {
  list-style: none;
  margin: 0.15rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.45rem;
}
.ik-howto-modes li {
  background: var(--ik-tint);
  border-radius: 12px;
  padding: 0.65rem 0.85rem;
  color: var(--ik-ink);
  font-size: 0.92rem;
  line-height: 1.55;
}
.ik-howto-modes strong { color: var(--ik-navy); }

.ik-howto-remember__card {
  background: #fff;
  border-radius: 24px;
  padding: 2.25rem 1.75rem;
  box-shadow: 0 16px 48px rgba(11, 27, 77, 0.1);
  max-width: 820px;
  margin-inline: auto;
  border: 1px solid rgba(43, 140, 245, 0.1);
}
.ik-howto-remember__card .ik-lead { max-width: none; }

/* boundaries — is */
.ik-bound-is__grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}
@media (min-width: 800px) {
  .ik-bound-is__grid { grid-template-columns: repeat(3, 1fr); }
}
.ik-bound-is__card {
  background: #fff;
  border-radius: 22px;
  padding: 1.6rem 1.45rem;
  box-shadow: 0 10px 36px rgba(43, 140, 245, 0.1);
  border: 1px solid rgba(43, 140, 245, 0.08);
}
.ik-bound-is__card h3 {
  margin: 0 0 0.65rem;
  color: var(--ik-navy);
  font-size: 1.2rem;
  font-weight: 800;
}
.ik-bound-is__card p {
  margin: 0;
  color: var(--ik-ink);
  line-height: 1.7;
  font-size: 0.98rem;
}

/* boundaries — not list */
.ik-bound-not__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}
@media (min-width: 800px) {
  .ik-bound-not__list { grid-template-columns: repeat(2, 1fr); gap: 1.15rem; }
}
.ik-bound-not__item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background: #fff;
  border-radius: 18px;
  padding: 1.25rem 1.3rem;
  box-shadow: 0 8px 28px rgba(11, 27, 77, 0.07);
  border: 1px solid rgba(11, 27, 77, 0.06);
}
.ik-bound-not__mark {
  flex: none;
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 999px;
  background: rgba(220, 38, 38, 0.1);
  color: #dc2626;
  font-weight: 850;
  font-size: 1.15rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.1rem;
}
.ik-bound-not__item strong {
  display: block;
  color: var(--ik-navy);
  font-size: 1.05rem;
  margin-bottom: 0.35rem;
}
.ik-bound-not__item p {
  margin: 0;
  color: var(--ik-ink);
  line-height: 1.65;
  font-size: 0.95rem;
}

/* boundaries — media */
.ik-bound-media__wrap { max-width: 920px; }
.ik-bound-media__cards {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
}
@media (min-width: 720px) {
  .ik-bound-media__cards { grid-template-columns: 1fr 1fr; }
}
.ik-bound-media__card {
  background: var(--ik-tint);
  border-radius: 20px;
  padding: 1.5rem 1.4rem;
  border: 1px solid rgba(43, 140, 245, 0.12);
}
.ik-bound-media__card--muted {
  background: #f8fafc;
  border-color: rgba(11, 27, 77, 0.08);
}
.ik-bound-media__card h3 {
  margin: 0 0 0.55rem;
  color: var(--ik-navy);
  font-size: 1.1rem;
  font-weight: 800;
}
.ik-bound-media__card p {
  margin: 0;
  color: var(--ik-ink);
  line-height: 1.7;
  font-size: 0.98rem;
}

/* Soften theme leftover padding when page hero is first */
body:has(.ik-page-hero) > main > .section:first-child { padding: 0; }

/* 场景页「它能做什么」 */
.ik-cando {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  display: grid;
  gap: 0.65rem;
}
.ik-cando__item {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 14px;
  padding: 0.8rem 0.9rem;
  color: rgba(255,255,255,0.9);
  line-height: 1.6;
  font-size: 0.95rem;
}
.ik-cando__icon {
  width: 1.35rem;
  height: 1.35rem;
  border-radius: 999px;
  background: rgba(158, 197, 255, 0.2);
  color: #9ec5ff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  flex: none;
  margin-top: 0.1rem;
}

/* ========== Stories (场景故事) ========== */
.ik-story-grid .ik-story-card h3 {
  font-size: 1.05rem;
  line-height: 1.45;
}
.ik-story-cover {
  object-fit: cover;
  aspect-ratio: 2.35 / 1;
  width: 100%;
  border-radius: var(--ik-radius);
  box-shadow: var(--ik-shadow);
}
.ik-story-article figure {
  margin: 1.75rem 0;
}
.ik-story-article figure img,
.ik-story-article .ik-story-figure img,
.ik-story-article .ik-story-poster img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 16px;
  box-shadow: 0 12px 36px rgba(11, 27, 77, 0.12);
}
.ik-story-article .ik-story-poster img {
  border-radius: 20px;
}
.ik-story-article table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  margin: 1.25rem 0 1.75rem;
}
.ik-story-article th,
.ik-story-article td {
  border: 1px solid var(--ik-line);
  padding: 0.55rem 0.7rem;
  text-align: left;
  vertical-align: top;
}
.ik-story-article th {
  background: var(--ik-tint);
  color: var(--ik-navy);
  font-weight: 700;
}
.ik-story-article hr {
  border: 0;
  border-top: 1px solid var(--ik-line);
  margin: 2rem 0;
}
.ik-story-hero .ik-hero__title {
  font-size: clamp(1.55rem, 2.6vw, 2.15rem);
  line-height: 1.35;
}