.rgp {
  padding-top: var(--nav-h);
  min-height: 100vh;
}

.rgp__head {
  position: relative;
  overflow: hidden;
  padding: 66px 0 42px;
  border-bottom: 1px solid var(--ink-line);
}

.rgp__kanji {
  position: absolute;
  top: 50%;
  right: 4%;
  transform: translateY(-50%);
  font-family: var(--font-brush);
  font-size: clamp(86px, 12vw, 150px);
  line-height: 1;
  color: var(--pattern-ink);
  pointer-events: none;
  user-select: none;
}

.rgp__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-brush);
  font-size: 0.84rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}

.rgp__title {
  font-size: clamp(2.3rem, 5vw, 3.7rem);
  line-height: 1.04;
  color: var(--text);
}

.rgp__intro {
  margin-top: 16px;
  max-width: 660px;
  color: var(--text-soft);
  font-size: 1.06rem;
  line-height: 1.75;
}

.rgp__layout {
  display: grid;
  grid-template-columns: 304px minmax(0, 1fr);
  gap: 50px;
  align-items: start;
  padding: 46px 0 110px;
}

.rgp__rail {
  position: sticky;
  top: calc(var(--nav-h) + 22px);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.rgp-tab {
  position: relative;
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  text-align: left;
  padding: 12px 14px;
  border-radius: 14px;
  border: none;
  background: transparent;
  color: var(--text-soft);
  transition: color 0.3s var(--ease-out), background 0.3s var(--ease-out);
}

.rgp-tab:hover {
  background: var(--washi);
  color: var(--text);
}

.rgp-tab__idx {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  min-width: 40px;
  height: 40px;
  padding: 0 8px;
  border-radius: 11px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.96rem;
  color: var(--text-mute);
  background: var(--washi-strong);
  transition: color 0.3s var(--ease-out), background 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

.rgp-tab__tx {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.rgp-tab__tx b {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.02rem;
  color: inherit;
  line-height: 1.25;
}

.rgp-tab__tx i {
  font-style: normal;
  font-size: 0.83rem;
  color: var(--text-mute);
}

.rgp-tab.is-active {
  background: linear-gradient(90deg, var(--glow-soft), transparent 82%);
  color: var(--text);
}

.rgp-tab.is-active::before {
  content: "";
  position: absolute;
  left: 1px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 56%;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--rose), var(--primary));
}

.rgp-tab.is-active .rgp-tab__idx {
  color: #fff;
  background: linear-gradient(140deg, var(--rose), var(--primary));
  box-shadow: 0 9px 22px -13px var(--glow-rose);
}

.rgp__content {
  min-width: 0;
}

.rgp-panel {
  display: none;
}

.rgp-panel.is-active {
  display: block;
}

.rgp-panel--in {
  animation: rgpfade 0.5s var(--ease-out);
}

@keyframes rgpfade {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: none; }
}

.rgp-panel__title {
  font-size: clamp(1.7rem, 3.2vw, 2.3rem);
  color: var(--text);
  margin: 0 0 28px;
  padding-bottom: 18px;
  position: relative;
}

.rgp-panel__title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 88px;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--rose), var(--primary));
}

.rgp__rules {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 18px;
}

.rgp-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
  padding: 24px;
  border-radius: var(--radius);
  border: 1px solid var(--ink-line);
  background: var(--card-grad);
  transition: border-color 0.3s var(--ease-out), transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

.rgp-card:hover {
  border-color: var(--ink-line-strong);
  transform: translateY(-3px);
  box-shadow: var(--shadow-soft);
}

.rgp-card__name {
  position: relative;
  padding-left: 15px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.12rem;
  color: var(--text);
  line-height: 1.3;
  overflow-wrap: break-word;
}

.rgp-card__name::before {
  content: "";
  position: absolute;
  left: 0;
  top: 3px;
  bottom: 3px;
  width: 3px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--rose), var(--primary));
}

.rgp-card__text {
  font-size: 0.98rem;
  line-height: 1.7;
  color: var(--text-soft);
  overflow-wrap: break-word;
}

.rgp-card__note {
  font-size: 0.88rem;
  color: var(--text-mute);
  padding: 11px 15px;
  border-radius: var(--radius-sm);
  background: var(--washi);
  border-left: 2px solid var(--ink-line-strong);
  overflow-wrap: break-word;
}

.rgp__doc {
  max-width: 820px;
}

.rgp-sub {
  font-size: 1.22rem;
  color: var(--primary-bright);
  margin: 30px 0 14px;
}

.rgp-sub:first-child {
  margin-top: 0;
}

.rgp-list {
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
}

.rgp-list li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 12px;
  color: var(--text-soft);
  line-height: 1.75;
  overflow-wrap: break-word;
}

.rgp-list li::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 11px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: linear-gradient(140deg, var(--rose), var(--primary));
}

.rgp-note {
  margin: 8px 0 16px;
  padding: 4px 0 4px 16px;
  border-left: 2px solid var(--ink-line-strong);
  color: var(--text-mute);
  font-style: italic;
}

.rgp-rolls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin: 10px 0 24px;
}

.rgp-roll {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--ink-line);
  background: var(--washi-strong);
  border-left-width: 4px;
}

.rgp-roll__range {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.04rem;
  color: var(--text);
}

.rgp-roll__label {
  font-size: 0.85rem;
  color: var(--text-soft);
}

.rgp-roll--crit-bad { border-left-color: #a01f5a; }
.rgp-roll--bad { border-left-color: #d4258c; }
.rgp-roll--mid { border-left-color: var(--gold); }
.rgp-roll--good { border-left-color: #2bbf63; }
.rgp-roll--crit-good { border-left-color: #16c46a; }

@media (max-width: 900px) {
  .rgp__layout {
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 20px 0 80px;
  }
  .rgp__rail {
    position: sticky;
    top: var(--nav-h);
    z-index: 40;
    flex-direction: row;
    overflow-x: auto;
    gap: 10px;
    padding: 14px 0;
    margin: 0 -18px;
    padding-left: 18px;
    padding-right: 18px;
    scrollbar-width: none;
    background: color-mix(in srgb, var(--bg) 92%, transparent);
    backdrop-filter: blur(10px);
  }
  .rgp__rail::-webkit-scrollbar { display: none; }
  .rgp-tab {
    flex: 0 0 auto;
    width: auto;
    padding: 11px 15px;
  }
  .rgp-tab:hover { transform: none; }
  .rgp-tab__idx { min-width: 34px; height: 34px; font-size: 0.9rem; }
  .rgp-tab__tx i { display: none; }
  .rgp__rules { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .rgp__head { padding: 48px 0 30px; }
}

.sakura-petals {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.sakura-petals i {
  position: absolute;
  top: -6vh;
  left: var(--x, 50%);
  width: 14px;
  height: 14px;
  background: linear-gradient(135deg, #fbd0e4, #ec4899);
  border-radius: 100% 0 100% 0;
  opacity: 0;
  animation: sakurafall var(--t, 12s) linear var(--d, 0s) infinite;
  filter: drop-shadow(0 2px 4px rgba(236, 72, 153, 0.3));
}

@keyframes sakurafall {
  0% { transform: translate3d(0, -6vh, 0) rotate(0deg) scale(var(--sc, 1)); opacity: 0; }
  12% { opacity: var(--o, 0.7); }
  88% { opacity: var(--o, 0.7); }
  100% { transform: translate3d(var(--sway, 40px), 114vh, 0) rotate(620deg) scale(var(--sc, 1)); opacity: 0; }
}

.rgp--sakura .rgp__head {
  background: radial-gradient(120% 150% at 85% -25%, rgba(236, 72, 153, 0.16), transparent 60%);
}

.rgp--sakura .rgp-panel__title {
  display: flex;
  align-items: center;
  gap: 14px;
}

.rgp--sakura .rgp-panel__title::before {
  content: "";
  flex: 0 0 auto;
  width: 32px;
  height: 32px;
  background: url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2040%2040'%3E%3Cg%20fill='%23ec4899'%3E%3Cellipse%20cx='20'%20cy='9'%20rx='5.5'%20ry='9'/%3E%3Cellipse%20cx='20'%20cy='9'%20rx='5.5'%20ry='9'%20transform='rotate(72%2020%2020)'/%3E%3Cellipse%20cx='20'%20cy='9'%20rx='5.5'%20ry='9'%20transform='rotate(144%2020%2020)'/%3E%3Cellipse%20cx='20'%20cy='9'%20rx='5.5'%20ry='9'%20transform='rotate(216%2020%2020)'/%3E%3Cellipse%20cx='20'%20cy='9'%20rx='5.5'%20ry='9'%20transform='rotate(288%2020%2020)'/%3E%3C/g%3E%3Ccircle%20cx='20'%20cy='20'%20r='3.6'%20fill='%23ffe1f0'/%3E%3C/svg%3E") center / contain no-repeat;
}

.rgp--sakura .rgp-panel__title::after {
  left: 46px;
}

.sakura-rules {
  position: relative;
  max-width: 880px;
}

.sakura-rules::before {
  content: "";
  position: absolute;
  left: 21px;
  top: 34px;
  bottom: 34px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, transparent, #c4805a 7%, var(--rose) 50%, #c4805a 93%, transparent);
  opacity: 0.5;
}

.sakura-rule {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 9px 0;
}

.sakura-rule__node {
  position: relative;
  z-index: 1;
  flex: 0 0 44px;
  height: 44px;
  margin-top: 6px;
  display: grid;
  place-items: center;
}

.sakura-rule__node::before {
  content: "";
  width: 36px;
  height: 36px;
  background: url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2040%2040'%3E%3Cg%20fill='%23ec4899'%3E%3Cellipse%20cx='20'%20cy='9'%20rx='5.5'%20ry='9'/%3E%3Cellipse%20cx='20'%20cy='9'%20rx='5.5'%20ry='9'%20transform='rotate(72%2020%2020)'/%3E%3Cellipse%20cx='20'%20cy='9'%20rx='5.5'%20ry='9'%20transform='rotate(144%2020%2020)'/%3E%3Cellipse%20cx='20'%20cy='9'%20rx='5.5'%20ry='9'%20transform='rotate(216%2020%2020)'/%3E%3Cellipse%20cx='20'%20cy='9'%20rx='5.5'%20ry='9'%20transform='rotate(288%2020%2020)'/%3E%3C/g%3E%3Ccircle%20cx='20'%20cy='20'%20r='3.6'%20fill='%23ffe1f0'/%3E%3C/svg%3E") center / contain no-repeat;
  filter: drop-shadow(0 4px 10px rgba(236, 72, 153, 0.5));
  transition: transform 0.4s var(--ease-spring);
}

.sakura-rule:nth-child(even) .sakura-rule__node::before {
  transform: rotate(36deg);
}

.sakura-rule:hover .sakura-rule__node::before {
  transform: scale(1.15) rotate(18deg);
}

.sakura-rule__card {
  flex: 1;
  min-width: 0;
  padding: 20px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--ink-line);
  background: var(--card-grad);
  transition: border-color 0.35s var(--ease-out), transform 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out);
}

.sakura-rule__card:hover {
  border-color: var(--rose);
  transform: translateX(4px);
  box-shadow: var(--shadow-soft);
}

.sakura-rule__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--text);
  line-height: 1.3;
  margin-bottom: 9px;
  overflow-wrap: break-word;
}

.sakura-rule__text {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text-soft);
  overflow-wrap: break-word;
}

.sakura-rule__note {
  margin-top: 13px;
  font-size: 0.92rem;
  color: var(--text-mute);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: var(--washi);
  border-left: 3px solid var(--rose);
  overflow-wrap: break-word;
}

@media (max-width: 560px) {
  .sakura-rule { gap: 13px; }
  .sakura-rule__node { flex: 0 0 38px; height: 38px; }
  .sakura-rule__node::before { width: 30px; height: 30px; }
  .sakura-rule__card { padding: 16px 18px; }
  .sakura-rules::before { left: 18px; }
  .sakura-rule__name { font-size: 1.1rem; }
  .sakura-rule__text { font-size: 1rem; }
}

@media (prefers-reduced-motion: reduce) {
  .sakura-petals { display: none; }
}

.rgp--doc .rgp-block {
  position: relative;
  margin-bottom: 18px;
  padding: 22px 26px 8px;
  border-radius: var(--radius);
  border: 1px solid var(--ink-line);
  background: var(--card-grad);
}

.rgp--doc .rgp-block::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 3px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--rose), var(--primary));
  opacity: 0.7;
}

.rgp--doc .rgp-sub {
  margin: 0 0 16px;
  font-size: 1.16rem;
  color: var(--text);
}

.rgp--doc .rgp-list {
  margin-bottom: 14px;
}

.rgp--doc .rgp-list li {
  font-size: 1.02rem;
}

.rgp--doc .rgp-block .rgp-note {
  margin-top: 0;
}

@media (max-width: 560px) {
  .rgp--doc .rgp-block { padding: 18px 18px 6px; }
}

@media (min-width: 901px) {
  .rgp {
    height: 100vh;
    min-height: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
  }
  .rgp__head {
    flex: 0 0 auto;
    padding: 26px 0 20px;
  }
  .rgp > .shell {
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
  }
  .rgp__layout {
    flex: 1 1 auto;
    min-height: 0;
    padding: 22px 0;
    align-items: stretch;
  }
  .rgp__rail {
    position: static;
    top: auto;
    min-height: 0;
    max-height: 100%;
    overflow-y: auto;
    padding-right: 6px;
    scrollbar-width: thin;
  }
  .rgp__content {
    min-height: 0;
    max-height: 100%;
    overflow-y: auto;
    padding: 12px 16px 16px 20px;
    margin-left: -8px;
    scrollbar-width: thin;
  }
}

.rgp__switch {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 20px;
  padding: 11px 20px;
  border-radius: 100px;
  border: 1px solid var(--ink-line-strong);
  background: var(--card-grad);
  color: var(--text);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.94rem;
  transition: border-color 0.35s var(--ease-out), transform 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out), background 0.35s var(--ease-out);
}

.rgp__switch:hover {
  border-color: var(--rose);
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
  background: linear-gradient(100deg, var(--glow-soft), transparent 70%);
}

.rgp__switch svg {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  color: var(--rose);
}

@media (min-width: 901px) {
  .rgp__switch {
    margin-top: 16px;
  }
}

.rgp__content { scrollbar-width: none; }
.rgp__content::-webkit-scrollbar { width: 0; height: 0; }

.rgp__rail { scrollbar-width: thin; scrollbar-color: var(--ink-line-strong) transparent; }
.rgp__rail::-webkit-scrollbar { width: 6px; height: 6px; display: block; }
.rgp__rail::-webkit-scrollbar-track { background: transparent; }
.rgp__rail::-webkit-scrollbar-thumb { background: var(--ink-line-strong); border-radius: 99px; }

@media (min-width: 901px) {
  .rgp__head {
    padding: 16px 0 13px;
  }
  .rgp__head > .shell {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 22px;
    flex-wrap: wrap;
  }
  .rgp__eyebrow { display: none; }
  .rgp__title { font-size: clamp(1.5rem, 2.3vw, 2rem); }
  .rgp__intro { display: none; }
  .rgp__switch { margin-top: 0; }
  .rgp__kanji { font-size: clamp(56px, 6vw, 82px); }
}