@import url('https://fonts.googleapis.com/css2?family=Klee+One:wght@600&display=swap');
/* ============================================================
 * rinka-letters.css — りんかからの手紙（/letters/）の新しい見た目（2026-09-26）
 * 描画は assets/js/rinka-letters-view.js（#rinka-letters-app）。
 * rinka-world-2026.css はこのあとに読まれるので、ぶつかる所は .rlv の新しいクラス名で書く。
 * 手書き風の文字は Klee One（読めないときは丸ゴシック・明朝にもどる）。
 * ========================================================== */

.rlv {
	--rlv-ink: #4a3540;
	--rlv-soft: #76606c;
	--rlv-rose: #e0588f;
	--rlv-rose-ink: #b83a72;
	--rlv-line: #f1d6e3;
	--rlv-card: #fffdfb;
	--rlv-wax: #d9476f;
	--rlv-wax-dark: #a8284f;
	--rlv-hand: 'Klee One', 'Zen Maru Gothic', 'Hiragino Maru Gothic ProN', 'Yu Mincho', serif;
	max-width: 760px;
	margin: 8px auto 32px;
	padding: 0 4px;
	color: var(--rlv-ink);
	display: grid;
	gap: 18px;
}
html.rlv-on #rinka-mailbox { display: none !important; }
html.rlv-lock, html.rlv-lock body { overflow: hidden; }

.rlv button { font: inherit; color: inherit; -webkit-appearance: none; appearance: none; }
.rlv-ico { width: 44px; height: 44px; flex: 0 0 auto; object-fit: contain; }
.rlv-ico--sm { width: 26px; height: 26px; }
.rlv-ico--xs { width: 18px; height: 18px; vertical-align: -3px; margin-right: 4px; }
.rlv-h { margin: 0; font-size: 1.14rem; font-weight: 800; letter-spacing: .02em; color: var(--rlv-ink); line-height: 1.35; border: 0; padding: 0; background: none; }
.rlv-h::before, .rlv-h::after { display: none !important; }
.rlv-sub { margin: 2px 0 0; font-size: .82rem; color: var(--rlv-soft); line-height: 1.5; }

/* ---------- 1. 郵便箱ヘッダー ---------- */
.rlv-hero {
	position: relative;
	display: grid;
	grid-template-columns: 96px 1fr;
	gap: 14px 16px;
	align-items: center;
	padding: 18px;
	border-radius: 26px;
	background: #fff8fb;
	border: 1.5px solid var(--rlv-line);
	box-shadow: 0 14px 34px -18px rgba(184, 58, 114, .35);
	overflow: hidden;
}
.rlv-hero::before { /* 切手のようなミシン目のふち */
	content: '';
	position: absolute; inset: 6px;
	border-radius: 20px;
	border: 2px dashed rgba(224, 88, 143, .22);
	pointer-events: none;
}
.rlv-hero__face { position: relative; width: 96px; height: 96px; border-radius: 50%; padding: 4px; background: conic-gradient(from 200deg, #ffb3cf, #cdb6ff, #ffe39a, #ffb3cf); box-shadow: 0 6px 16px -6px rgba(184, 58, 114, .5); }
.rlv-hero__face img { width: 100%; height: 100%; border-radius: 50%; object-fit: cover; display: block; background: #fff; border: 3px solid #fff; box-sizing: border-box; }
.rlv-hero__main { min-width: 0; }
.rlv-hero__say {
	position: relative;
	margin: 0 0 8px;
	padding: 9px 13px;
	background: #fff;
	border-radius: 14px;
	font-family: var(--rlv-hand);
	font-weight: 600;
	font-size: 1rem;
	line-height: 1.55;
	box-shadow: 0 2px 8px rgba(184, 58, 114, .1);
}
.rlv-hero__say::before { content: ''; position: absolute; left: -7px; top: 14px; border: 7px solid transparent; border-right-color: #fff; border-left: 0; }
.rlv-hero__rank { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; margin: 0 0 6px; font-size: .84rem; color: var(--rlv-soft); }
.rlv-hero__rank strong { color: var(--rlv-rose-ink); font-size: 1rem; }
.rlv-hero__next { margin: 5px 0 0; font-size: .8rem; color: var(--rlv-soft); }
.rlv-bar { height: 10px; border-radius: 99px; background: #f6e3ec; overflow: hidden; box-shadow: inset 0 1px 2px rgba(120, 40, 80, .12); }
.rlv-bar > span { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, #ff9cc4, #c8a6ff); transition: width .8s cubic-bezier(.22, .8, .24, 1); }
.rlv-bar--thin { height: 7px; }
.rlv-stats { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 0; }
.rlv-stats > div { background: #fff; border-radius: 14px; padding: 8px 6px; text-align: center; border: 1px solid var(--rlv-line); }
.rlv-stats dt { font-size: .74rem; color: var(--rlv-soft); }
.rlv-stats dd { margin: 2px 0 0; font-size: 1.35rem; font-weight: 800; color: var(--rlv-rose-ink); line-height: 1.1; }
.rlv-stats small { font-size: .72rem; font-weight: 700; color: var(--rlv-soft); margin-left: 2px; }

/* 季節の色味（ヘッダーと便せんで共通） */
.rlv-paper--spring { --paper: #fff8fa; --paper-deco: rgba(255, 150, 190, .28); --paper-rule: rgba(224, 88, 143, .16); --paper-accent: #e0588f; }
.rlv-paper--summer { --paper: #f6fbff; --paper-deco: rgba(120, 190, 255, .26); --paper-rule: rgba(80, 150, 220, .16); --paper-accent: #3f8fd6; }
.rlv-paper--autumn { --paper: #fffaf1; --paper-deco: rgba(240, 150, 80, .26); --paper-rule: rgba(200, 120, 60, .16); --paper-accent: #c86a2a; }
.rlv-paper--winter { --paper: #f7f9ff; --paper-deco: rgba(170, 190, 255, .32); --paper-rule: rgba(110, 130, 210, .16); --paper-accent: #5a6fcc; }
.rlv-hero.rlv-paper--spring, .rlv-hero.rlv-paper--summer, .rlv-hero.rlv-paper--autumn, .rlv-hero.rlv-paper--winter {
	background:
		radial-gradient(circle at 92% 12%, var(--paper-deco) 0 26px, transparent 27px),
		radial-gradient(circle at 84% 30%, var(--paper-deco) 0 9px, transparent 10px),
		radial-gradient(circle at 6% 92%, var(--paper-deco) 0 18px, transparent 19px),
		var(--paper);
}

/* ---------- 封筒（共通のつくり） ---------- */
.rlv-env__art {
	--env: #ffd3e3; --env-2: #ffc0d7; --env-in: #f7a8c6;
	position: relative;
	display: block;
	width: 100%;
	aspect-ratio: 16 / 10.5;
	perspective: 600px;
}
.rlv-env__back, .rlv-env__front, .rlv-env__flap, .rlv-env__peek, .rlv-open-env__sheet { position: absolute; left: 0; right: 0; }
.rlv-env__back { top: 0; bottom: 0; border-radius: 10px; background: var(--env-in); }
.rlv-env__peek { left: 9%; right: 9%; top: 6%; bottom: 20%; border-radius: 4px; background: repeating-linear-gradient(#fff 0 9px, #f3e7ee 9px 10px); opacity: 0; transition: transform .35s, opacity .35s; }
.rlv-env__front {
	bottom: 0; top: 0;
	border-radius: 10px;
	background: linear-gradient(160deg, var(--env), var(--env-2));
	clip-path: polygon(0 34%, 50% 70%, 100% 34%, 100% 100%, 0 100%);
	box-shadow: inset 0 -2px 0 rgba(0, 0, 0, .04);
}
.rlv-env__flap {
	top: 0; height: 66%;
	background: linear-gradient(180deg, var(--env-2), var(--env));
	clip-path: polygon(0 0, 100% 0, 50% 100%);
	transform-origin: 50% 0;
	border-radius: 10px 10px 0 0;
	transition: transform .5s cubic-bezier(.34, 1.4, .64, 1);
	filter: drop-shadow(0 2px 1px rgba(120, 40, 80, .12));
	z-index: 2;
}
.rlv-env__art.is-open .rlv-env__flap { transform: rotateX(180deg); z-index: 0; filter: none; }
.rlv-env__art.is-open .rlv-env__peek { opacity: 1; transform: translateY(-22%); }
.rlv-seal {
	position: absolute; z-index: 3;
	left: 50%; top: 66%;
	width: 22%; aspect-ratio: 1;
	transform: translate(-50%, -50%);
	border-radius: 47% 53% 50% 50% / 52% 46% 54% 48%;
	background: radial-gradient(circle at 35% 30%, #ff8fae, var(--rlv-wax) 45%, var(--rlv-wax-dark));
	box-shadow: 0 2px 4px rgba(120, 20, 50, .35), inset 0 -2px 3px rgba(80, 0, 30, .35), inset 0 2px 2px rgba(255, 255, 255, .35);
	color: rgba(255, 230, 238, .92);
	display: grid; place-items: center;
}
.rlv-seal svg { width: 52%; height: 52%; filter: drop-shadow(0 1px 0 rgba(90, 0, 30, .45)); }

/* 手紙の種類ごとの封筒の色 */
.rlv-kind--daily   { --env: #fff1c9; --env-2: #ffe29a; --env-in: #f5c96a; }
.rlv-kind--bond    { --env: #ffd6e6; --env-2: #ffbcd5; --env-in: #f59bbd; }
.rlv-kind--season  { --env: #e3f4ea; --env-2: #c6ead5; --env-in: #97d2b1; }
.rlv-kind--visit   { --env: #e9e0ff; --env-2: #d5c6ff; --env-in: #b39cf4; }
.rlv-kind--play    { --env: #dff1ff; --env-2: #c3e3ff; --env-in: #8fc5f4; }
.rlv-kind--secret  { --env: #4b4577; --env-2: #3a3563; --env-in: #2a2550; }
.rlv-kind--secret .rlv-seal { background: radial-gradient(circle at 35% 30%, #ffe9a8, #e2b64a 45%, #a67a1c); color: #fff8e0; }
.rlv-kind--endless { --env: #ffe8d6; --env-2: #ffd3b3; --env-in: #f3b184; }
.rlv-kind--locked  { --env: #ece7ea; --env-2: #e2dce0; --env-in: #d3cbd0; }

/* ---------- 2. きょうの手紙 ---------- */
.rlv-today, .rlv-hints, .rlv-box {
	background: #fff;
	border-radius: 24px;
	border: 1.5px solid var(--rlv-line);
	padding: 16px;
	box-shadow: 0 10px 28px -20px rgba(184, 58, 114, .35);
}
.rlv-today__head, .rlv-hints__head, .rlv-box__head { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.rlv .rlv-env {
	display: grid; justify-items: center; gap: 8px;
	width: 100%; max-width: 360px; margin: 0 auto;
	padding: 6px 6px 4px; background: none; border: 0; cursor: pointer;
	-webkit-tap-highlight-color: transparent;
}
.rlv-env--big .rlv-env__art { max-width: 300px; filter: drop-shadow(0 12px 16px rgba(184, 58, 114, .22)); transition: transform .3s cubic-bezier(.34, 1.56, .64, 1); }
.rlv-env--big:hover .rlv-env__art, .rlv-env--big:focus-visible .rlv-env__art { transform: translateY(-4px) rotate(-1.5deg); }
.rlv-env--big .rlv-env__title { font-family: var(--rlv-hand); font-weight: 600; font-size: 1rem; text-align: center; line-height: 1.5; }
.rlv-env__cta {
	display: inline-flex; align-items: center; justify-content: center;
	min-height: 44px; padding: 0 26px; border-radius: 99px;
	background: linear-gradient(135deg, #ff8fbf, #d38bff);
	color: #fff; font-weight: 800; letter-spacing: .04em;
	box-shadow: 0 8px 18px -8px rgba(200, 60, 140, .7);
}
.rlv-today.is-read .rlv-env__cta { background: #fff; color: var(--rlv-rose-ink); border: 2px solid #ffc3da; box-shadow: none; }
.rlv-today:not(.is-read) .rlv-env--big .rlv-env__art { animation: rlv-bob 2.6s ease-in-out infinite; }
@keyframes rlv-bob { 0%, 100% { transform: translateY(0) rotate(0); } 50% { transform: translateY(-5px) rotate(-1deg); } }
.rlv-strip { margin-top: 14px; }
.rlv-strip__lead { margin: 0 0 6px; font-size: .78rem; color: var(--rlv-soft); text-align: center; }
.rlv-strip__row { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(14, 1fr); gap: 3px; }
.rlv-strip__row li { aspect-ratio: 1; border-radius: 7px; background: #f7eef3; display: grid; place-items: center; font-size: .66rem; color: #a28f99; font-weight: 700; }
.rlv-strip__row li.is-on { background: linear-gradient(135deg, #ffb0cf, #d2b0ff); color: #fff; }
.rlv-strip__row li.is-today { outline: 2px solid var(--rlv-rose); outline-offset: 1px; }

/* ---------- 3. つぎの条件 ---------- */
.rlv-hints__list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.rlv-hint { background: #fff8fb; border-radius: 16px; padding: 11px 13px; border: 1px solid var(--rlv-line); }
.rlv-hint__text { margin: 0 0 7px; font-size: .9rem; font-weight: 700; line-height: 1.5; }
.rlv-hint--season .rlv-hint__text { margin: 0; font-weight: 600; color: var(--rlv-soft); }
.rlv-hint__num { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin: 6px 0 0; font-size: .8rem; color: var(--rlv-soft); }
.rlv-hint__num a { display: inline-flex; align-items: center; min-height: 36px; padding: 0 14px; border-radius: 99px; background: #fff; border: 1.5px solid #ffc3da; color: var(--rlv-rose-ink); font-weight: 800; text-decoration: none; }

/* ---------- 4. 手紙箱 ---------- */
.rlv-tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 12px; }
.rlv .rlv-tab {
	min-height: 40px; padding: 0 16px; border-radius: 99px;
	border: 1.5px solid var(--rlv-line); background: #fff; color: var(--rlv-soft);
	font-weight: 800; font-size: .86rem; cursor: pointer;
}
.rlv .rlv-tab.is-on { background: linear-gradient(135deg, #ff8fbf, #c99bff); border-color: transparent; color: #fff; }
.rlv-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 12px; }
@media (max-width: 520px) { .rlv-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; } }
.rlv .rlv-more { grid-column: 1 / -1; justify-self: center; min-height: 44px; padding: 0 20px; border-radius: 99px; border: 1.5px dashed #e6c9d7; background: #fff; color: var(--rlv-soft); font-weight: 800; font-size: .86rem; cursor: pointer; }
.rlv .rlv-tile {
	position: relative;
	display: grid; gap: 6px; align-content: start;
	padding: 12px 10px 10px;
	border-radius: 18px;
	background: #fffdfb;
	border: 1.5px solid #f4e2ea;
	text-align: left; cursor: pointer;
	transition: transform .25s cubic-bezier(.34, 1.56, .64, 1), box-shadow .25s;
	-webkit-tap-highlight-color: transparent;
}
.rlv button.rlv-tile:hover, .rlv button.rlv-tile:focus-visible { transform: translateY(-3px); box-shadow: 0 10px 20px -12px rgba(184, 58, 114, .45); }
.rlv-tile .rlv-env__art { max-width: 150px; margin: 0 auto; }
.rlv-tile .rlv-env__title, .rlv-tile__title { font-weight: 700; font-size: .86rem; line-height: 1.45; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.rlv-tile.is-unread .rlv-env__title { font-family: var(--rlv-hand); font-weight: 600; }
.rlv-tile__meta { display: flex; flex-wrap: wrap; gap: 4px 8px; font-size: .72rem; color: var(--rlv-soft); }
.rlv-tile__kind { padding: 1px 8px; border-radius: 99px; background: #f7eef3; }
.rlv-mark { position: absolute; top: 8px; right: 8px; z-index: 4; font-size: .7rem; font-weight: 800; border-radius: 99px; padding: 2px 9px; }
.rlv-mark--new { background: var(--rlv-wax); color: #fff; box-shadow: 0 3px 8px -2px rgba(217, 71, 111, .7); }
.rlv-mark--new::before { content: ''; display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: #fff; margin-right: 4px; vertical-align: 1px; animation: rlv-blink 1.6s ease-in-out infinite; }
@keyframes rlv-blink { 50% { opacity: .25; } }
.rlv-mark--read { background: #eaf8f1; color: #2f8a63; }
.rlv-tile.is-locked { background: #faf8f9; border-style: dashed; cursor: default; }
.rlv-tile.is-locked .rlv-env__art { filter: grayscale(1); opacity: .55; }
.rlv-tile.is-locked .rlv-tile__title { color: #9b8d95; }
.rlv-tile__lock { position: absolute; left: 50%; top: 50%; width: 38%; height: auto; transform: translate(-50%, -48%); z-index: 4; filter: grayscale(0); opacity: .95; }
.rlv-tile__cond { font-size: .74rem; color: var(--rlv-soft); line-height: 1.5; }
.rlv-empty { grid-column: 1 / -1; text-align: center; color: var(--rlv-soft); margin: 18px 0; }
.rlv-paperinfo { display: flex; align-items: center; gap: 6px; margin: 14px 0 0; font-size: .8rem; color: var(--rlv-soft); }

/* ---------- 読む画面（封筒→便せん） ---------- */
.rlv-modal { position: fixed; inset: 0; z-index: 99990; display: grid; place-items: center; padding: max(12px, env(safe-area-inset-top)) 12px max(12px, env(safe-area-inset-bottom)); }
.rlv-modal__veil { position: absolute; inset: 0; background: rgba(70, 40, 60, .42); -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px); opacity: 0; transition: opacity .3s; }
.rlv-modal.is-in .rlv-modal__veil, .rlv-modal.is-reduced .rlv-modal__veil { opacity: 1; }
.rlv-modal.is-closing { opacity: 0; transition: opacity .2s; }
.rlv-stage { position: relative; width: min(92vw, 600px); max-height: 100%; display: grid; place-items: center; }
.rlv-open-env { position: absolute; width: min(78vw, 340px); aspect-ratio: 16 / 10.5; perspective: 700px; transform: scale(.6) translateY(40px); opacity: 0; transition: transform .45s cubic-bezier(.34, 1.56, .64, 1), opacity .3s; }
.rlv-modal.is-in .rlv-open-env { transform: none; opacity: 1; }
.rlv-open-env__sheet { left: 8%; right: 8%; top: 8%; bottom: 14%; border-radius: 6px; background: repeating-linear-gradient(#fff 0 10px, #f4e8ef 10px 11px); transition: transform .6s cubic-bezier(.22, .8, .24, 1) .15s; z-index: 1; }
.rlv-open-env .rlv-env__front { z-index: 2; }
.rlv-open-env .rlv-seal { width: 20%; transition: transform .35s, opacity .35s; }
.rlv-modal.is-opened .rlv-open-env .rlv-env__flap { transform: rotateX(180deg); z-index: 0; filter: none; }
.rlv-modal.is-opened .rlv-open-env .rlv-seal { transform: translate(-50%, -50%) scale(1.5) rotate(18deg); opacity: 0; }
.rlv-modal.is-opened .rlv-open-env__sheet { transform: translateY(-62%); }
.rlv-modal.is-shown .rlv-open-env { opacity: 0; transform: translateY(60px) scale(.9); transition-duration: .35s; }
.rlv-modal.is-reduced .rlv-open-env { display: none; }

.rlv-letter {
	position: relative;
	width: 100%;
	max-height: calc(100dvh - 32px);
	max-height: calc(100vh - 32px);
	overflow-y: auto;
	-webkit-overflow-scrolling: touch;
	box-sizing: border-box;
	padding: 26px 22px 20px;
	border-radius: 10px;
	color: #4a3540;
	background:
		radial-gradient(circle at 94% 6%, var(--paper-deco) 0 30px, transparent 31px),
		radial-gradient(circle at 86% 13%, var(--paper-deco) 0 10px, transparent 11px),
		radial-gradient(circle at 5% 96%, var(--paper-deco) 0 24px, transparent 25px),
		radial-gradient(circle at 14% 90%, var(--paper-deco) 0 8px, transparent 9px),
		var(--paper);
	box-shadow: 0 30px 60px -20px rgba(60, 20, 50, .55), 0 2px 0 rgba(255, 255, 255, .8) inset;
	opacity: 0;
	transform: translateY(24px) scale(.94);
	transition: opacity .45s, transform .55s cubic-bezier(.34, 1.3, .64, 1);
	outline: none;
	cursor: default;
}
@supports (max-height: 100dvh) { .rlv-letter { max-height: calc(100dvh - 32px); } }
.rlv-modal.is-shown .rlv-letter { opacity: 1; transform: none; }
.rlv-letter__date { margin: 0; min-height: 1.2em; font-size: .8rem; color: var(--paper-accent); font-weight: 700; letter-spacing: .08em; }
.rlv-letter__title { margin: 4px 60px 14px 0; font-family: var(--rlv-hand); font-weight: 600; font-size: 1.22rem; line-height: 1.5; color: #4a3540; border: 0; padding: 0; background: none; }
.rlv-letter__title::before, .rlv-letter__title::after { display: none !important; }
.rlv-letter__body {
	font-family: var(--rlv-hand);
	font-weight: 600;
	font-size: 1.04rem;
	line-height: 2.1rem;
	background-image: repeating-linear-gradient(transparent 0 calc(2.1rem - 1px), var(--paper-rule) calc(2.1rem - 1px) 2.1rem);
	padding-bottom: 2px;
}
.rlv-line { margin: 0; min-height: 2.1rem; overflow-wrap: anywhere; }
.rlv-ch { opacity: 0; transition: opacity .28s ease-out; }
.rlv-ch.is-in { opacity: 1; }
.rlv-letter__sign { display: flex; align-items: center; justify-content: flex-end; gap: 8px; margin: 14px 0 0; font-family: var(--rlv-hand); font-weight: 600; font-size: 1.05rem; color: var(--paper-accent); opacity: 0; transition: opacity .5s; }
.rlv-letter__sign img { width: 40px; height: 40px; border-radius: 50%; object-fit: cover; border: 2px solid #fff; box-shadow: 0 2px 6px rgba(0, 0, 0, .12); }
.rlv-modal.is-written .rlv-letter__sign { opacity: 1; }
.rlv-skip { margin: 10px 0 0; text-align: center; font-size: .74rem; color: var(--rlv-soft, #76606c); }
.rlv-modal.is-written .rlv-skip { display: none; }
.rlv-letter .rlv-close {
	position: sticky; top: 0; float: right; z-index: 5;
	margin: -12px -8px 0 8px;
	min-height: 40px; padding: 0 14px; border-radius: 99px;
	border: 1.5px solid rgba(0, 0, 0, .08); background: rgba(255, 255, 255, .92);
	font: inherit; font-weight: 800; font-size: .84rem; color: #7a4b62; cursor: pointer;
	-webkit-appearance: none; appearance: none;
}
.rlv-reply { margin-top: 16px; padding-top: 12px; border-top: 1.5px dashed var(--paper-rule); }
.rlv-reply__lead { margin: 0 0 8px; font-size: .84rem; color: #76606c; text-align: center; }
.rlv-reply__chips { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.rlv-letter .rlv-chip {
	min-height: 40px; padding: 6px 14px; border-radius: 99px;
	background: #fff; border: 1.5px solid var(--paper-accent); color: var(--paper-accent);
	font: inherit; font-weight: 700; font-size: .86rem; cursor: pointer; line-height: 1.4;
	-webkit-appearance: none; appearance: none;
}
.rlv-letter .rlv-chip:hover, .rlv-letter .rlv-chip:focus-visible { background: var(--paper-accent); color: #fff; }
.rlv-reply__done { margin: 0; text-align: center; font-weight: 700; color: #2f8a63; font-size: .9rem; }

/* 季節ごとの便せんの模様 */
.rlv-letter.rlv-paper--summer { background:
	repeating-radial-gradient(circle at 100% 0, transparent 0 22px, var(--paper-deco) 22px 24px, transparent 24px 34px),
	var(--paper); }
.rlv-letter.rlv-paper--winter { background:
	radial-gradient(circle at 12% 8%, var(--paper-deco) 0 3px, transparent 4px),
	radial-gradient(circle at 30% 4%, var(--paper-deco) 0 2px, transparent 3px),
	radial-gradient(circle at 88% 10%, var(--paper-deco) 0 4px, transparent 5px),
	radial-gradient(circle at 70% 6%, var(--paper-deco) 0 2px, transparent 3px),
	radial-gradient(circle at 94% 94%, var(--paper-deco) 0 22px, transparent 23px),
	var(--paper); }
.rlv-letter.rlv-paper--autumn { background:
	radial-gradient(ellipse 22px 12px at 92% 8%, var(--paper-deco) 98%, transparent),
	radial-gradient(ellipse 12px 22px at 86% 14%, var(--paper-deco) 98%, transparent),
	radial-gradient(ellipse 18px 10px at 8% 94%, var(--paper-deco) 98%, transparent),
	var(--paper); }

/* なかよし段階で便せんの飾りがふえる */
.rlv-tier--1 { box-shadow: 0 30px 60px -20px rgba(60, 20, 50, .55), inset 0 0 0 6px var(--paper), inset 0 0 0 7.5px var(--paper-rule); }
.rlv-tier--2, .rlv-tier--3 { border-radius: 4px; }
.rlv-tier--2::before, .rlv-tier--3::before { /* レースのふち */
	content: ''; position: absolute; left: 0; right: 0; top: 0; height: 10px; pointer-events: none;
	background: radial-gradient(circle at 6px -1px, transparent 6px, var(--paper) 6.5px) 0 0 / 12px 10px repeat-x;
	transform: translateY(-9px);
}
.rlv-tier--2 { box-shadow: 0 30px 60px -20px rgba(60, 20, 50, .55), inset 0 0 0 7px var(--paper), inset 0 0 0 9px var(--paper-deco); }
.rlv-tier--3 { box-shadow: 0 30px 60px -20px rgba(60, 20, 50, .55), inset 0 0 0 6px var(--paper), inset 0 0 0 8px #e6c46a, inset 0 0 0 11px var(--paper), inset 0 0 0 12px rgba(230, 196, 106, .6); }
.rlv-stamp {
	position: absolute; top: 18px; right: 18px; z-index: 1;
	width: 54px; height: 64px; padding: 5px; box-sizing: border-box;
	background: #fff;
	-webkit-mask: radial-gradient(circle 3px at 3px 3px, transparent 98%, #000) -3px -3px / 8px 8px;
	mask: radial-gradient(circle 3px at 3px 3px, transparent 98%, #000) -3px -3px / 8px 8px;
	transform: rotate(6deg);
	filter: drop-shadow(0 2px 3px rgba(0, 0, 0, .15));
}
.rlv-stamp img { width: 100%; height: 100%; object-fit: cover; display: block; }
.rlv-tier--3 .rlv-letter__title { margin-right: 80px; }
.rlv-tier--3 .rlv-close { margin-right: 60px; }

/* ---------- 画面の大きさ ---------- */
@media (min-width: 640px) {
	.rlv-hero { grid-template-columns: 112px 1fr 220px; }
	.rlv-hero__face { width: 112px; height: 112px; }
	.rlv-stats { grid-column: auto; grid-template-columns: 1fr; gap: 6px; }
	.rlv-stats > div { display: flex; justify-content: space-between; align-items: baseline; padding: 6px 12px; text-align: left; }
	.rlv-stats dd { margin: 0; font-size: 1.2rem; }
	.rlv-grid { grid-template-columns: repeat(auto-fill, minmax(168px, 1fr)); }
	.rlv-letter { padding: 34px 38px 26px; }
	.rlv-letter__body { font-size: 1.1rem; }
}
/* よこ持ちスマホ（高さがひくい）：便せんを横長に */
@media (max-height: 480px) and (orientation: landscape) {
	.rlv-stage { width: min(94vw, 720px); }
	.rlv-open-env { width: min(40vw, 260px); }
	.rlv-letter { padding: 18px 24px 16px; }
	.rlv-letter__body { line-height: 1.9rem; background-image: repeating-linear-gradient(transparent 0 calc(1.9rem - 1px), var(--paper-rule) calc(1.9rem - 1px) 1.9rem); }
	.rlv-line { min-height: 1.9rem; }
}
@media (max-width: 380px) {
	.rlv-hero { grid-template-columns: 72px 1fr; padding: 14px; }
	.rlv-hero__face { width: 72px; height: 72px; }
	.rlv-grid { gap: 8px; }
	.rlv .rlv-tile { padding: 10px 8px 8px; }
}

@media (prefers-reduced-motion: reduce) {
	.rlv *, .rlv-modal * { animation: none !important; transition: none !important; }
	.rlv-ch { opacity: 1; }
}

/* 手紙箱：読んだ手紙の開いたふたが上のカードにかぶらないように */
.rlv-tile .rlv-env__art.is-open { margin-top: 22%; }
.rlv-tile .rlv-env__art.is-open .rlv-env__flap { transform: rotateX(180deg) scaleY(.5); }
.rlv-tile .rlv-env__art.is-open .rlv-env__peek { transform: translateY(-14%); }