:root {
    --cream: #f8eee7;
    --pearl: #fff9f6;
    --rose: #ef8cae;
    --rose-deep: #cf5d86;
    --berry: #7c2f54;
    --gold: #e6b768;
    --ink: #24161d;
    --muted: rgba(36, 22, 29, 0.68);
    --panel: rgba(255, 250, 247, 0.74);
    --shadow: 0 30px 90px rgba(92, 38, 61, 0.18);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
}

body {
    font-family: "Trebuchet MS", "Segoe UI Symbol", sans-serif;
    color: var(--ink);
    background:
        radial-gradient(circle at top, rgba(255, 215, 224, 0.7), transparent 34%),
        radial-gradient(circle at 20% 85%, rgba(247, 190, 208, 0.36), transparent 24%),
        linear-gradient(180deg, #fffaf7 0%, #f8ece5 58%, #f6e7de 100%);
}

img {
    display: block;
    max-width: 100%;
}

button,
input {
    font: inherit;
}

a {
    color: inherit;
    text-decoration: none;
}

.gate-body,
.story-body,
.admin-body {
    overflow: hidden;
}

.ambient-fall {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.ambient-fall--soft {
    opacity: 0.9;
}

.ambient-fall__item {
    position: absolute;
    left: var(--start-x);
    top: -10%;
    font-size: var(--size);
    font-family: "Segoe UI Emoji", "Apple Color Emoji", "Noto Color Emoji", sans-serif;
    opacity: 0;
    filter: drop-shadow(0 10px 24px rgba(115, 64, 84, 0.18));
    animation: ambientFall var(--duration) linear var(--delay) infinite;
}

.gate-shell,
.story-shell,
.admin-shell {
    position: relative;
    min-height: 100dvh;
    width: 100%;
}

.gate-shell {
    display: grid;
    place-items: center;
    padding: 2rem;
}

.gate-card {
    position: relative;
    z-index: 1;
    width: min(33rem, 100%);
    padding: 2rem;
    border: 1px solid rgba(185, 112, 142, 0.18);
    border-radius: 2rem;
    background: linear-gradient(180deg, rgba(255, 253, 251, 0.94), rgba(255, 242, 237, 0.84));
    box-shadow: var(--shadow);
    backdrop-filter: blur(22px);
}

.gate-card__spark {
    display: inline-flex;
    align-items: center;
    padding: 0.45rem 0.9rem;
    border-radius: 999px;
    background: rgba(239, 140, 174, 0.14);
    color: var(--rose-deep);
    font-size: 0.85rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.gate-card__title,
.admin-hero__title,
.section-title {
    margin: 1rem 0 0.7rem;
    font-family: Georgia, "Times New Roman", serif;
    font-weight: 600;
    line-height: 1.05;
}

.gate-card__title {
    font-size: clamp(2rem, 5vw, 3.6rem);
    letter-spacing: -0.03em;
    text-wrap: balance;
}

.gate-card__text,
.admin-hero__text,
.empty-state,
.visit-card__meta,
.code-card__meta {
    color: var(--muted);
}

.gate-form {
    display: grid;
    gap: 0.9rem;
    margin-top: 1.6rem;
}

.gate-form__input,
.admin-form__input {
    width: 100%;
    border: 1px solid rgba(125, 67, 92, 0.16);
    border-radius: 1.15rem;
    padding: 1rem 1.15rem;
    background: rgba(255, 255, 255, 0.86);
    color: var(--ink);
    outline: none;
    transition: border-color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.gate-form__input:focus,
.admin-form__input:focus {
    border-color: rgba(207, 93, 134, 0.42);
    box-shadow: 0 0 0 0.35rem rgba(239, 140, 174, 0.12);
    transform: translateY(-1px);
}

.gate-form__button,
.admin-form__button,
.mini-button,
.story-pill {
    border: 0;
    border-radius: 999px;
    cursor: pointer;
    transition: transform 180ms ease, box-shadow 180ms ease, background-color 180ms ease, opacity 180ms ease;
}

.gate-form__button,
.admin-form__button {
    padding: 1rem 1.3rem;
    background: linear-gradient(135deg, var(--rose-deep), var(--berry));
    color: #fff7fb;
    box-shadow: 0 18px 45px rgba(108, 44, 69, 0.24);
}

.gate-form__button:hover,
.admin-form__button:hover,
.mini-button:hover,
.story-pill:hover {
    transform: translateY(-2px);
}

.flash {
    margin-top: 1rem;
    border-radius: 1.1rem;
    padding: 0.9rem 1rem;
    font-size: 0.98rem;
}

.flash--error {
    background: rgba(193, 49, 103, 0.12);
    color: #7e1f45;
}

.flash--success {
    background: rgba(53, 157, 107, 0.12);
    color: #1f694a;
}

.story-shell {
    padding: 0;
}

.story-viewport {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100dvh;
    transition: transform 420ms cubic-bezier(0.22, 1, 0.36, 1);
}

.story-shell--rotated .story-viewport {
    inset: 50% auto auto 50%;
    width: 100dvh;
    height: 100dvw;
    transform: translate(-50%, -50%) rotate(90deg);
    transform-origin: center;
}

.story-stage {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background:
        radial-gradient(circle at top, rgba(255, 222, 229, 0.65), transparent 32%),
        radial-gradient(circle at 80% 20%, rgba(235, 183, 102, 0.2), transparent 24%),
        linear-gradient(180deg, rgba(255, 250, 247, 0.94), rgba(249, 235, 227, 0.96));
}

.story-stage::before,
.story-stage::after {
    content: "";
    position: absolute;
    border-radius: 999px;
    pointer-events: none;
}

.story-stage::before {
    width: 34rem;
    height: 34rem;
    left: -8rem;
    bottom: -14rem;
    background: radial-gradient(circle, rgba(239, 140, 174, 0.16), transparent 68%);
}

.story-stage::after {
    width: 26rem;
    height: 26rem;
    right: -6rem;
    top: -10rem;
    background: radial-gradient(circle, rgba(230, 183, 104, 0.18), transparent 68%);
}

.story-toolbar {
    position: absolute;
    top: 1.2rem;
    right: 1.2rem;
    z-index: 7;
    display: flex;
    gap: 0.7rem;
    align-items: center;
}

.story-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.72rem 1rem;
    background: rgba(255, 255, 255, 0.68);
    color: var(--berry);
    box-shadow: 0 12px 26px rgba(100, 52, 71, 0.12);
    backdrop-filter: blur(18px);
}

.story-pill--ghost {
    background: rgba(255, 248, 246, 0.45);
}

.rotate-toast {
    position: absolute;
    top: 1.25rem;
    left: 50%;
    z-index: 7;
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;
    padding: 0.8rem 1rem;
    border-radius: 999px;
    background: rgba(255, 251, 248, 0.85);
    box-shadow: 0 14px 34px rgba(90, 47, 66, 0.14);
    transform: translate(-50%, -140%);
    opacity: 0;
    transition: transform 260ms ease, opacity 260ms ease;
    pointer-events: none;
}

.rotate-toast.is-visible {
    transform: translate(-50%, 0);
    opacity: 1;
}

.rotate-toast__icon {
    display: inline-grid;
    place-items: center;
    width: 1.8rem;
    height: 1.8rem;
    border-radius: 999px;
    background: rgba(239, 140, 174, 0.14);
    animation: spinHint 1.4s ease-in-out infinite;
}

.story-surface {
    position: relative;
    z-index: 2;
    width: 100%;
    height: 100%;
}

.tap-hint {
    position: absolute;
    left: 50%;
    bottom: max(1.2rem, env(safe-area-inset-bottom));
    z-index: 6;
    padding: 0.65rem 1rem;
    border-radius: 999px;
    background: rgba(255, 251, 248, 0.72);
    color: var(--berry);
    font-size: 0.9rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    transform: translateX(-50%);
    backdrop-filter: blur(18px);
    animation: tapPulse 1.5s ease-in-out infinite;
    transition: opacity 180ms ease, transform 180ms ease;
    pointer-events: none;
}

.tap-hint.is-hidden {
    opacity: 0;
    transform: translateX(-50%) translateY(18px);
}

.scene {
    position: relative;
    width: 100%;
    height: 100%;
    padding: clamp(4rem, 5vw, 5rem) clamp(1.2rem, 4vw, 3rem) clamp(3.6rem, 8vh, 5rem);
    display: flex;
    align-items: center;
    justify-content: center;
}

.intro-scene {
    text-align: center;
}

.intro-word-group {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.9rem;
    max-width: 70rem;
}

.intro-word {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: clamp(7rem, 18vw, 13rem);
    padding: 1rem 1.4rem;
    border-radius: 1.6rem;
    background: rgba(255, 255, 255, 0.64);
    box-shadow: 0 20px 50px rgba(99, 48, 70, 0.16);
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(2rem, 5.4vw, 4.9rem);
    letter-spacing: 0.08em;
    opacity: 0;
    filter: blur(20px);
    transform: translateY(34px) scale(0.92);
    animation: iphoneReveal 900ms cubic-bezier(0.22, 1, 0.36, 1) forwards;
    animation-delay: var(--delay);
}

.intro-scene--gold .intro-word {
    background: rgba(255, 251, 245, 0.74);
    color: #7a4c11;
}

.emoji-heart-scene {
    perspective: 1000px;
}

.emoji-heart {
    position: relative;
    display: grid;
    grid-template-columns: repeat(9, 1fr);
    grid-template-rows: repeat(8, 1fr);
    width: min(52vw, 28rem);
    aspect-ratio: 1 / 1;
    place-items: center;
}

.emoji-heart__glow {
    position: absolute;
    inset: 12%;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(239, 140, 174, 0.16), transparent 68%);
    filter: blur(18px);
}

.emoji-heart__item {
    position: relative;
    z-index: 1;
    grid-column: var(--col);
    grid-row: var(--row);
    font-family: "Segoe UI Emoji", "Apple Color Emoji", "Noto Color Emoji", sans-serif;
    font-size: clamp(1.45rem, 3vw, 2.35rem);
    opacity: 0;
    transform: scale(0.35) rotate(-18deg);
    animation:
        emojiBuild 720ms cubic-bezier(0.22, 1, 0.36, 1) forwards,
        emojiFloat 4.6s ease-in-out infinite;
    animation-delay: var(--delay), calc(var(--delay) + 0.72s);
    filter: drop-shadow(0 8px 18px rgba(148, 63, 96, 0.22));
}

.book-scene {
    flex-direction: column;
    gap: 1.3rem;
}

.book-scene--storybook {
    align-items: center;
}

.book-caption-shell {
    position: relative;
    width: min(74rem, 88vw);
    padding: 1rem 1.5rem 1.1rem;
    border-radius: 1.6rem;
    border: 1px solid rgba(152, 90, 115, 0.12);
    background: linear-gradient(180deg, rgba(255, 252, 250, 0.88), rgba(255, 245, 240, 0.78));
    box-shadow: 0 18px 38px rgba(104, 50, 72, 0.12);
    backdrop-filter: blur(18px);
    opacity: 0;
    filter: blur(10px);
    transform: translateY(12px) scale(0.985);
    animation: iphoneReveal 760ms cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.book-caption-shell::before {
    content: "";
    position: absolute;
    inset: auto 1.3rem 0.7rem 1.3rem;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(192, 131, 155, 0.38), transparent);
}

.book-caption {
    margin: 0;
    text-align: center;
    line-height: 1.45;
    color: var(--berry);
}

.book-caption--script {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.18em 0.45em;
    font-family: "Segoe Print", "Bradley Hand", "Comic Sans MS", cursive;
    font-size: clamp(1.02rem, 1.9vw, 1.52rem);
    font-weight: 600;
    letter-spacing: 0.01em;
    line-height: 1.55;
}

.book-caption__word {
    display: inline-block;
    opacity: 0;
    filter: blur(14px);
    transform: translateY(12px) scale(0.96);
    animation: iphoneReveal 700ms cubic-bezier(0.22, 1, 0.36, 1) forwards;
    animation-delay: var(--word-delay);
}

.book-caption--empty {
    visibility: hidden;
}

.book-frame {
    --page-turn-duration: 2060ms;
    --page-turn-ease: linear;
    position: relative;
    width: min(82vw, 70rem);
    aspect-ratio: 16 / 10;
    padding: clamp(1rem, 2vw, 1.35rem);
    border-radius: 2rem;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(250, 240, 234, 0.98)),
        linear-gradient(135deg, rgba(239, 140, 174, 0.24), rgba(230, 183, 104, 0.18));
    box-shadow: var(--shadow);
    overflow: hidden;
    perspective: 1600px;
    transform: translateZ(0);
}

.book-frame--story {
    isolation: isolate;
    contain: layout;
    overflow: visible;
}

.book-frame::before {
    content: "";
    position: absolute;
    inset: 0.85rem;
    border-radius: 1.45rem;
    border: 1px solid rgba(123, 68, 91, 0.1);
    z-index: 5;
    pointer-events: none;
}

.book-frame--single {
    width: min(38vw, 31rem);
    aspect-ratio: 3 / 4.3;
}

.book-frame--memory {
    background:
        linear-gradient(180deg, rgba(255, 254, 252, 0.94), rgba(252, 242, 236, 0.98)),
        linear-gradient(135deg, rgba(242, 216, 224, 0.28), rgba(229, 196, 170, 0.18));
}

.book-spread,
.single-page {
    position: relative;
    width: 100%;
    height: 100%;
}

.single-page--flip {
    overflow: hidden;
    backface-visibility: hidden;
}

.single-page--ending-cover {
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(253, 244, 240, 0.96)),
        linear-gradient(135deg, rgba(242, 210, 222, 0.24), rgba(231, 186, 197, 0.18));
}

.book-spread {
    --book-spread-gap: clamp(0.8rem, 1.8vw, 1.4rem);
    --book-spine-width: clamp(0.45rem, 0.9vw, 0.8rem);
    --book-page-side: calc((100% - var(--book-spine-width) - (var(--book-spread-gap) * 2)) / 2);
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: var(--book-spread-gap);
}

.book-spread--cover-static,
.book-spread--ending {
    align-items: stretch;
}

.book-spread--transition {
    display: block;
    perspective: 2400px;
    overflow: visible;
}

.book-spread--cover-open {
    perspective: 4600px;
}

.book-spread--transition .book-spine {
    position: absolute;
    top: 0;
    bottom: 0;
    left: calc(var(--book-page-side) + var(--book-spread-gap));
    z-index: 0;
}

.book-spread--transition .book-page--base-left,
.book-spread--transition .book-page--next-left,
.book-spread--transition .book-page--inside-cover,
.book-spread--transition .book-page--base-right,
.book-spread--transition .book-page--next-right,
.book-spread--transition .book-page-turn-stack,
.book-spread--transition .book-page-turn {
    position: absolute;
    top: 0;
    bottom: 0;
    width: var(--book-page-side);
}

.book-spread--transition .book-page-turn-stack,
.book-spread--transition .book-page-turn {
    width: var(--book-page-side);
}

.book-spread--transition .book-page--base-left {
    left: 0;
    z-index: 2;
    animation: baseLeftPageFade var(--page-turn-duration) var(--page-turn-ease) both;
}

.book-spread--transition .book-page--next-left {
    left: 0;
    z-index: 1;
    opacity: 0;
    animation: nextLeftPageReveal var(--page-turn-duration) var(--page-turn-ease) both;
}

.book-spread--cover-open .book-page--base-left {
    opacity: 0;
    animation: coverBaseLeftReveal var(--page-turn-duration) var(--page-turn-ease) both;
}

.book-spread--cover-open .book-page--base-right {
    animation: coverRightPageHold var(--page-turn-duration) var(--page-turn-ease) both;
}

.book-spread--final-right .book-page--base-left {
    animation: none;
}

.book-spread--final-right .book-page--base-right {
    opacity: 0;
    animation: nextRightPageReveal var(--page-turn-duration) var(--page-turn-ease) both;
}

.book-spread--cover-open .book-page--inside-cover {
    opacity: 1;
    z-index: 1;
    animation: coverInsidePageFade var(--page-turn-duration) var(--page-turn-ease) both;
}

.book-spread--transition .book-page--inside-cover {
    left: 0;
    z-index: 1;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(248, 239, 233, 0.96)),
        repeating-linear-gradient(180deg, rgba(192, 145, 168, 0.05) 0 2px, transparent 2px 24px);
    animation: baseLeftPageFade var(--page-turn-duration) var(--page-turn-ease) both;
}

.book-spread--transition .book-page--base-right {
    right: 0;
    z-index: 1;
}

.book-spread--transition .book-page--next-right {
    right: 0;
    z-index: 1;
}

.book-page-turn-stack {
    left: calc(var(--book-page-side) + var(--book-spread-gap) + var(--book-spine-width) + var(--book-spread-gap));
    z-index: 4;
    pointer-events: none;
}

.book-page-turn-leaf {
    position: absolute;
    inset: 0;
    transform-origin: left center;
    transform-style: preserve-3d;
    will-change: transform, opacity;
}

.book-page-turn-leaf--front {
    z-index: 2;
}

.book-page-turn-leaf--back {
    z-index: 3;
    opacity: 0;
}

.book-page-turn-leaf__surface {
    position: absolute;
    inset: 0;
    overflow: hidden;
    border-radius: 1.3rem;
    background: linear-gradient(180deg, #fff, #faf4ef);
    box-shadow:
        inset 0 0 0 1px rgba(127, 77, 98, 0.08),
        0 22px 38px rgba(83, 37, 55, 0.08);
}

.book-page-turn-leaf__surface::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(79, 40, 58, 0.18), transparent 14%, transparent 76%, rgba(255, 255, 255, 0.28));
    opacity: 0.28;
    pointer-events: none;
}

.book-page-turn-stack--cover .book-page-turn-leaf__surface {
    box-shadow:
        inset 0 0 0 1px rgba(127, 77, 98, 0.08),
        0 14px 26px rgba(83, 37, 55, 0.06);
}

.book-page-turn-stack--cover .book-page-turn-leaf__surface::after {
    background: linear-gradient(90deg, rgba(79, 40, 58, 0.12), transparent 18%, transparent 82%, rgba(255, 255, 255, 0.2));
    opacity: 0.14;
}

.book-page-turn-leaf__surface--back {
    transform: scaleX(-1);
}

.book-page-turn-leaf--spread-front {
    animation: spreadPageFlipFront var(--page-turn-duration) var(--page-turn-ease) both;
}

.book-page-turn-leaf--spread-back {
    animation: spreadPageFlipBack var(--page-turn-duration) var(--page-turn-ease) both;
}

.book-page-turn-leaf--cover-front {
    animation: coverOpenFlipFront var(--page-turn-duration) var(--page-turn-ease) both;
}

.book-page-turn-leaf--cover-back {
    animation: coverOpenFlipBack var(--page-turn-duration) var(--page-turn-ease) both;
}

.book-page-turn {
    left: calc(var(--book-page-side) + var(--book-spread-gap) + var(--book-spine-width) + var(--book-spread-gap));
    z-index: 4;
    transform-style: preserve-3d;
    transform-origin: left center;
    will-change: transform, opacity;
    animation: realisticPageFlip var(--page-turn-duration) var(--page-turn-ease) both;
}

.book-page-turn--cover-open {
    animation-name: coverOpenFlip;
}

.book-page-turn--spread {
    animation-name: spreadPageFlip;
}

.book-page-turn--final-right {
    left: 0;
    transform-origin: right center;
    animation-name: finalPageFlipRight;
}

.book-page-turn__face {
    position: absolute;
    inset: 0;
    overflow: hidden;
    border-radius: 1.3rem;
    background: linear-gradient(180deg, #fff, #faf4ef);
    box-shadow:
        inset 0 0 0 1px rgba(127, 77, 98, 0.08),
        0 22px 38px rgba(83, 37, 55, 0.08);
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    transform-style: preserve-3d;
}

.book-page-turn__face::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(79, 40, 58, 0.18), transparent 14%, transparent 76%, rgba(255, 255, 255, 0.28));
    opacity: 0.3;
    pointer-events: none;
}

.book-page-turn--cover-open .book-page-turn__face {
    box-shadow:
        inset 0 0 0 1px rgba(127, 77, 98, 0.08),
        0 14px 26px rgba(83, 37, 55, 0.06);
}

.book-page-turn--cover-open .book-page-turn__face::after {
    background: linear-gradient(90deg, rgba(79, 40, 58, 0.12), transparent 18%, transparent 82%, rgba(255, 255, 255, 0.2));
    opacity: 0.14;
}

.book-page-turn__face--inside {
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(248, 239, 233, 0.96)),
        repeating-linear-gradient(180deg, rgba(192, 145, 168, 0.05) 0 2px, transparent 2px 24px);
}

.book-page-turn__face--closing-cover {
    background:
        radial-gradient(circle at 18% 22%, rgba(255, 255, 255, 0.26) 0 0.34rem, transparent 0.4rem),
        radial-gradient(circle at 82% 16%, rgba(255, 255, 255, 0.2) 0 0.24rem, transparent 0.3rem),
        linear-gradient(145deg, rgba(247, 215, 226, 0.96), rgba(242, 183, 203, 0.84) 58%, rgba(231, 160, 189, 0.74));
}

.book-page-turn__face--front {
    transform: rotateY(0deg) translateZ(0.06rem);
    opacity: 1;
}

.book-page-turn__face--back {
    transform: rotateY(180deg) translateZ(0.06rem);
    opacity: 1;
}

.book-page-turn__content {
    position: absolute;
    inset: 0;
    border-radius: inherit;
    overflow: hidden;
    transform: translateZ(0.02rem);
}

.book-page-turn__content--back {
    transform: scaleX(-1) translateZ(0.02rem);
}

.book-frame--flip::after {
    content: "";
    position: absolute;
    top: 1.05rem;
    bottom: 1.05rem;
    left: calc(50% - 0.18rem);
    width: 0.4rem;
    border-radius: 999px;
    background: linear-gradient(180deg, rgba(104, 57, 79, 0.16), rgba(255, 255, 255, 0.12), rgba(104, 57, 79, 0.16));
    z-index: 0;
}

.book-page,
.memory-page,
.single-page {
    position: relative;
    overflow: hidden;
    border-radius: 1.3rem;
    background: linear-gradient(180deg, #fff, #faf4ef);
    box-shadow:
        inset 0 0 0 1px rgba(127, 77, 98, 0.08),
        0 22px 38px rgba(83, 37, 55, 0.1);
}

.book-page {
    transform-style: preserve-3d;
    backface-visibility: hidden;
    will-change: transform, opacity;
}

.book-page--paper {
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(248, 239, 233, 0.96)),
        repeating-linear-gradient(180deg, rgba(192, 145, 168, 0.05) 0 2px, transparent 2px 24px);
}

.book-page--cover-page,
.book-page--ending-page {
    animation: pageSettleIn 880ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.book-frame__turn-shadow,
.book-frame__turn-sheet {
    position: absolute;
    top: 1.05rem;
    bottom: 1.05rem;
    left: calc(50% + 0.35rem);
    right: 1.05rem;
    pointer-events: none;
    z-index: 3;
    border-radius: 0 1.32rem 1.32rem 0;
    backface-visibility: hidden;
    will-change: transform, opacity;
}

.book-frame__turn-shadow {
    background: linear-gradient(90deg, rgba(63, 27, 42, 0.16), rgba(63, 27, 42, 0.06) 28%, transparent 70%);
    transform-origin: left center;
    animation: bookTurnShadow var(--page-turn-duration) var(--page-turn-ease) both;
}

.book-frame__turn-sheet {
    background: linear-gradient(270deg, rgba(255, 255, 255, 0.98) 0%, rgba(255, 247, 243, 0.97) 48%, rgba(234, 211, 220, 0.88) 100%);
    box-shadow:
        inset 0 0 0 1px rgba(130, 79, 101, 0.08),
        -8px 0 18px rgba(94, 43, 64, 0.06);
    transform-origin: left center;
    backface-visibility: hidden;
    animation: bookPageTurn var(--page-turn-duration) var(--page-turn-ease) both;
}

.book-frame__turn-sheet::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(90deg, rgba(103, 53, 74, 0.2), transparent 14%, transparent 80%, rgba(255, 255, 255, 0.54));
}

.book-page--left {
    transform-origin: right center;
    animation: pageSwingLeft var(--page-turn-duration) var(--page-turn-ease);
}

.book-page--right {
    transform-origin: left center;
    animation: pageSwingRight var(--page-turn-duration) var(--page-turn-ease);
}

.book-page__image,
.single-page__image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #fff;
    border-radius: inherit;
}

.single-page--flip .single-page__image {
    opacity: 0;
    transform: scale(0.988);
    animation: singlePageReveal var(--page-turn-duration) var(--page-turn-ease) forwards;
}

.single-page__turn-shadow,
.single-page__turn-sheet {
    position: absolute;
    inset: 0;
    pointer-events: none;
    border-radius: inherit;
    backface-visibility: hidden;
    will-change: transform, opacity;
}

.single-page__turn-shadow {
    z-index: 2;
    background: linear-gradient(90deg, rgba(63, 27, 42, 0.17), rgba(63, 27, 42, 0.06) 28%, transparent 72%);
    transform-origin: left center;
    animation: singlePageShadow var(--page-turn-duration) var(--page-turn-ease) both;
}

.single-page__turn-sheet {
    z-index: 3;
    background: linear-gradient(270deg, rgba(255, 255, 255, 0.99) 0%, rgba(255, 247, 243, 0.98) 52%, rgba(232, 206, 217, 0.9) 100%);
    box-shadow:
        inset 0 0 0 1px rgba(130, 79, 101, 0.08),
        -8px 0 18px rgba(94, 43, 64, 0.06);
    transform-origin: left center;
    animation: singlePageTurn var(--page-turn-duration) var(--page-turn-ease) both;
}

.single-page__turn-sheet::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(90deg, rgba(103, 53, 74, 0.2), transparent 14%, transparent 80%, rgba(255, 255, 255, 0.54));
}

.single-page__back-cover {
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background:
        radial-gradient(circle at 18% 22%, rgba(255, 255, 255, 0.22) 0 0.32rem, transparent 0.38rem),
        radial-gradient(circle at 82% 18%, rgba(255, 255, 255, 0.16) 0 0.22rem, transparent 0.3rem),
        linear-gradient(145deg, rgba(247, 215, 226, 0.9), rgba(242, 183, 203, 0.78) 58%, rgba(231, 160, 189, 0.68));
    box-shadow:
        inset 0 0 0 1px rgba(147, 84, 109, 0.08),
        inset 0 18px 26px rgba(255, 255, 255, 0.18);
}

.single-page__turn-sheet--ending {
    background:
        linear-gradient(270deg, rgba(255, 254, 252, 0.99) 0%, rgba(255, 245, 240, 0.98) 52%, rgba(240, 205, 220, 0.86) 100%);
}

.book-spine {
    width: clamp(0.45rem, 0.9vw, 0.8rem);
    height: 100%;
    border-radius: 999px;
    background: linear-gradient(180deg, rgba(160, 108, 130, 0.28), rgba(119, 60, 86, 0.46), rgba(160, 108, 130, 0.28));
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.22);
}

.memory-page {
    padding: clamp(1rem, 2vw, 1.2rem);
    display: grid;
    place-items: center;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.97), rgba(251, 246, 242, 0.96)),
        repeating-linear-gradient(180deg, rgba(192, 145, 168, 0.06) 0 2px, transparent 2px 24px);
}

.memory-photo {
    width: min(100%, 23rem);
    padding: 0.75rem 0.75rem 1.4rem;
    border-radius: 1rem;
    background: #fffdfa;
    box-shadow: 0 18px 32px rgba(87, 39, 58, 0.14);
}

.memory-photo--left {
    transform: rotate(-5deg) translateY(-0.5rem);
}

.memory-photo--right {
    transform: rotate(5deg) translateY(0.7rem);
}

.memory-photo__image {
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: 0.8rem;
    object-fit: cover;
}

.photo-heart {
    position: relative;
    width: min(74rem, 82vw);
    height: min(42rem, 72vh);
    overflow: visible;
}

.photo-heart__glow {
    position: absolute;
    inset: 18% 22%;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(239, 140, 174, 0.18), rgba(239, 140, 174, 0.05) 42%, transparent 72%);
    filter: blur(26px);
    pointer-events: none;
}

.photo-heart__flyby,
.photo-heart__item {
    position: absolute;
    left: 50%;
    top: 50%;
    aspect-ratio: 1 / 1;
    padding: 0.3rem;
    border-radius: 1.1rem;
    background: rgba(255, 252, 250, 0.95);
    box-shadow: 0 18px 32px rgba(97, 46, 68, 0.18);
    pointer-events: none;
    will-change: transform, opacity;
}

.photo-heart__flyby {
    z-index: 2;
    width: clamp(9.6rem, 13.4vw, 11.2rem);
    opacity: 0;
    transform: var(--flight-start);
    animation: photoFlyAcross var(--flight-duration) linear var(--flight-delay) both;
}

.photo-heart__item {
    z-index: 4;
    width: clamp(4rem, 5.3vw, 4.85rem);
    opacity: 0;
    transform: var(--build-transform);
    animation: photoHeartBuild var(--heart-duration) cubic-bezier(0.2, 0.9, 0.2, 1) var(--heart-delay) forwards;
}

.photo-heart__image {
    width: 100%;
    height: 100%;
    border-radius: 0.9rem;
    object-fit: cover;
}

.messenger-scene {
    align-items: center;
}

.chat-panel {
    width: min(40rem, 82vw);
    min-height: 28rem;
    padding: 1.25rem;
    border-radius: 2rem;
    background: rgba(255, 251, 248, 0.72);
    box-shadow: var(--shadow);
    backdrop-filter: blur(22px);
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.chat-panel__header {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding-bottom: 0.85rem;
    border-bottom: 1px solid rgba(121, 74, 94, 0.12);
}

.chat-panel__dot {
    width: 0.8rem;
    height: 0.8rem;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--rose), var(--berry));
    box-shadow: 0 0 0 0.25rem rgba(239, 140, 174, 0.12);
}

.chat-panel__title {
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--berry);
}

.messages-feed {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding: 1.25rem 0 0;
    overflow-y: auto;
    overflow-x: hidden;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
    touch-action: pan-y;
}

.messages-feed::before {
    content: "";
    margin-top: auto;
    flex: 0 0 auto;
}

.message-bubble {
    align-self: flex-start;
    max-width: 80%;
    padding: 0.85rem 1rem;
    border-radius: 1.3rem 1.3rem 1.3rem 0.45rem;
    background: linear-gradient(135deg, rgba(255, 233, 241, 0.98), rgba(255, 247, 242, 0.96));
    box-shadow: 0 12px 28px rgba(91, 44, 64, 0.12);
    font-size: clamp(0.98rem, 1.8vw, 1.15rem);
    line-height: 1.4;
    animation: bubbleIn 420ms cubic-bezier(0.22, 1, 0.36, 1);
}

.typing-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    margin-top: 1rem;
    width: fit-content;
    padding: 0.8rem 0.95rem;
    border-radius: 999px;
    background: rgba(255, 241, 246, 0.94);
}

.typing-indicator[hidden],
.chat-composer[hidden] {
    display: none !important;
}

.typing-indicator span {
    width: 0.42rem;
    height: 0.42rem;
    border-radius: 999px;
    background: rgba(124, 47, 84, 0.56);
    animation: typing 900ms ease-in-out infinite;
}

.typing-indicator span:nth-child(2) {
    animation-delay: 120ms;
}

.typing-indicator span:nth-child(3) {
    animation-delay: 240ms;
}

.chat-composer {
    margin-top: 1rem;
    padding-top: 0.95rem;
    border-top: 1px solid rgba(121, 74, 94, 0.12);
    opacity: 0;
    transform: translateY(0.8rem);
    transition: opacity 320ms ease, transform 320ms ease;
}

.chat-composer.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.chat-composer__label {
    margin-bottom: 0.7rem;
    color: var(--rose-deep);
    font-size: 0.76rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.chat-composer__form {
    display: grid;
    gap: 0.75rem;
}

.chat-composer__field {
    min-height: 5.8rem;
    width: 100%;
    resize: vertical;
    border: 1px solid rgba(125, 67, 92, 0.12);
    border-radius: 1.15rem;
    padding: 0.9rem 1rem;
    background: rgba(255, 255, 255, 0.9);
    color: var(--ink);
    outline: none;
    transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.chat-composer__field:focus {
    border-color: rgba(207, 93, 134, 0.38);
    box-shadow: 0 0 0 0.28rem rgba(239, 140, 174, 0.12);
    transform: translateY(-1px);
}

.chat-composer__footer {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.chat-composer__button {
    min-width: 9.8rem;
    padding: 0.82rem 1.2rem;
    border: 0;
    border-radius: 999px;
    cursor: pointer;
    background: linear-gradient(135deg, var(--rose-deep), var(--berry));
    color: #fff7fb;
    box-shadow: 0 16px 34px rgba(108, 44, 69, 0.2);
    transition: transform 180ms ease, opacity 180ms ease;
}

.chat-composer__button:hover {
    transform: translateY(-2px);
}

.chat-composer__button:disabled {
    opacity: 0.72;
    cursor: progress;
}

.chat-composer__status {
    min-height: 1.2rem;
    flex: 1;
    font-size: 0.92rem;
    color: var(--muted);
}

.chat-composer__status--success {
    color: #1f694a;
}

.chat-composer__status--error {
    color: #8a294f;
}

.chat-composer__status--pending {
    color: var(--berry);
}

.finale-scene {
    perspective: 1300px;
    overflow: hidden;
}

.finale-cloud {
    position: relative;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
}

.finale-cloud--pulse .finale-title {
    animation: finalePulse 900ms ease;
}

.finale-echo {
    position: absolute;
    left: calc(50% + var(--x));
    top: calc(50% + var(--y));
    font-family: "Palatino Linotype", "Book Antiqua", Georgia, serif;
    font-size: clamp(1.9rem, 4vw, 4.2rem);
    font-style: italic;
    color: rgba(124, 47, 84, 0.2);
    opacity: 0;
    white-space: nowrap;
    transform: translate3d(-50%, -50%, -32rem) scale(0.35);
    animation: flyEcho var(--duration) linear var(--delay) infinite;
}

.finale-title {
    position: absolute;
    inset: 50% auto auto 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.55rem;
    transform: translate(-50%, -50%);
    text-align: center;
    font-family: "Palatino Linotype", "Book Antiqua", Georgia, serif;
    font-size: clamp(2.6rem, 6.2vw, 6.4rem);
    font-weight: 700;
    line-height: 0.98;
    color: var(--berry);
    text-shadow: 0 12px 38px rgba(107, 53, 75, 0.16);
}

.finale-title__word {
    opacity: 0;
    filter: blur(14px);
    transform: translateY(0.9rem) scale(0.96);
    animation:
        iphoneReveal 820ms cubic-bezier(0.22, 1, 0.36, 1) var(--word-delay) forwards,
        titleFloat 4.4s ease-in-out calc(var(--word-delay) + 0.82s) infinite;
}

.reply-scene {
    align-items: center;
}

.reply-card {
    width: min(44rem, 84vw);
    padding: clamp(1.3rem, 2vw, 1.7rem);
    border-radius: 2rem;
    background: rgba(255, 251, 248, 0.8);
    box-shadow: var(--shadow);
    backdrop-filter: blur(22px);
}

.reply-card__eyebrow {
    display: inline-flex;
    align-items: center;
    padding: 0.42rem 0.86rem;
    border-radius: 999px;
    background: rgba(239, 140, 174, 0.14);
    color: var(--rose-deep);
    font-size: 0.78rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.reply-card__title {
    margin: 1rem 0 0.55rem;
    font-family: "Palatino Linotype", "Book Antiqua", Georgia, serif;
    font-size: clamp(2rem, 4.2vw, 3.3rem);
    color: var(--berry);
}

.reply-card__text {
    margin: 0 0 1.2rem;
    color: var(--muted);
}

.reply-form {
    display: grid;
    gap: 0.95rem;
}

.reply-form__field {
    min-height: 12rem;
    width: 100%;
    resize: vertical;
    border: 1px solid rgba(125, 67, 92, 0.12);
    border-radius: 1.4rem;
    padding: 1rem 1.1rem;
    background: rgba(255, 255, 255, 0.88);
    color: var(--ink);
    outline: none;
    transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.reply-form__field:focus {
    border-color: rgba(207, 93, 134, 0.38);
    box-shadow: 0 0 0 0.32rem rgba(239, 140, 174, 0.12);
    transform: translateY(-1px);
}

.reply-form__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.reply-form__button {
    min-width: 11rem;
    padding: 0.95rem 1.35rem;
    border: 0;
    border-radius: 999px;
    cursor: pointer;
    background: linear-gradient(135deg, var(--rose-deep), var(--berry));
    color: #fff7fb;
    box-shadow: 0 18px 45px rgba(108, 44, 69, 0.24);
    transition: transform 180ms ease, opacity 180ms ease, box-shadow 180ms ease;
}

.reply-form__button:hover {
    transform: translateY(-2px);
}

.reply-form__button:disabled {
    opacity: 0.72;
    cursor: progress;
}

.reply-form__status {
    min-height: 1.4rem;
    flex: 1;
    font-size: 0.95rem;
    color: var(--muted);
}

.reply-form__status--success {
    color: #1f694a;
}

.reply-form__status--error {
    color: #8a294f;
}

.reply-form__status--pending {
    color: var(--berry);
}

.admin-shell {
    overflow-y: auto;
    padding: 2rem clamp(1rem, 4vw, 2rem) 3rem;
}

.admin-shell > .ambient-fall {
    position: fixed;
}

.admin-hero {
    position: relative;
    z-index: 1;
    width: min(74rem, 100%);
    margin: 0 auto 1.4rem;
    padding: 1.6rem 1.8rem;
    border-radius: 2rem;
    background: rgba(255, 250, 247, 0.76);
    backdrop-filter: blur(22px);
    box-shadow: var(--shadow);
}

.admin-hero__header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
}

.hero-actions {
    display: flex;
    gap: 0.7rem;
    flex-wrap: wrap;
}

.admin-grid {
    position: relative;
    z-index: 1;
    width: min(74rem, 100%);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.15fr 0.95fr;
    gap: 1.25rem;
}

.admin-card {
    padding: 1.4rem;
    border-radius: 1.7rem;
    background: rgba(255, 250, 247, 0.76);
    box-shadow: var(--shadow);
    backdrop-filter: blur(20px);
    min-height: 0;
}

.admin-form {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    gap: 0.8rem;
    align-items: end;
}

.admin-form__field {
    display: grid;
    gap: 0.45rem;
}

.admin-form__label {
    font-size: 0.9rem;
    color: var(--muted);
}

.admin-form__button {
    white-space: nowrap;
    min-width: 10rem;
}

.code-grid,
.visit-list {
    display: grid;
    gap: 0.9rem;
}

.admin-scroll-panel {
    margin-top: 1.25rem;
    max-height: min(65dvh, 48rem);
    padding-right: 0.35rem;
    overflow-y: auto;
    overscroll-behavior: contain;
}

.admin-scroll-panel::-webkit-scrollbar {
    width: 0.72rem;
}

.admin-scroll-panel::-webkit-scrollbar-track {
    border-radius: 999px;
    background: rgba(240, 221, 229, 0.65);
}

.admin-scroll-panel::-webkit-scrollbar-thumb {
    border: 2px solid rgba(255, 248, 245, 0.9);
    border-radius: 999px;
    background: linear-gradient(180deg, rgba(207, 93, 134, 0.75), rgba(124, 47, 84, 0.72));
}

.admin-scroll-panel--codes {
    max-height: min(68dvh, 50rem);
}

.admin-scroll-panel--visits {
    max-height: min(68dvh, 50rem);
}

.code-card,
.visit-card {
    padding: 1rem;
    border-radius: 1.2rem;
    border: 1px solid rgba(130, 78, 99, 0.08);
    background: rgba(255, 255, 255, 0.64);
}

.code-card--paused {
    opacity: 0.72;
}

.code-card__head,
.visit-card__head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 0.8rem;
}

.code-card__code {
    font-family: Georgia, "Times New Roman", serif;
    font-size: 1.45rem;
    color: var(--berry);
}

.code-card__status,
.visit-card__role {
    display: inline-flex;
    align-items: center;
    padding: 0.35rem 0.7rem;
    border-radius: 999px;
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.status-active {
    background: rgba(53, 157, 107, 0.14);
    color: #1f694a;
}

.status-paused {
    background: rgba(193, 49, 103, 0.12);
    color: #7e1f45;
}

.role-admin {
    background: rgba(230, 183, 104, 0.18);
    color: #85590f;
}

.role-viewer {
    background: rgba(239, 140, 174, 0.12);
    color: #8b365d;
}

.code-card__meta,
.visit-card__meta {
    display: grid;
    gap: 0.2rem;
    margin-top: 0.6rem;
    font-size: 0.93rem;
}

.code-card__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
    margin-top: 0.9rem;
}

.mini-button {
    padding: 0.7rem 0.9rem;
    background: rgba(248, 235, 229, 0.92);
    color: var(--berry);
}

.mini-button--accent {
    background: rgba(239, 140, 174, 0.16);
}

.mini-button--danger {
    background: rgba(193, 49, 103, 0.14);
    color: #8a294f;
}

@media (max-width: 960px) {
    .admin-grid {
        grid-template-columns: 1fr;
    }

    .admin-form {
        grid-template-columns: 1fr;
    }

    .book-frame {
        width: min(92vw, 70rem);
    }

    .book-caption-shell {
        width: min(92vw, 74rem);
        padding: 0.9rem 1rem 1rem;
    }

    .book-frame--single {
        width: min(64vw, 31rem);
    }

    .chat-panel {
        width: min(88vw, 40rem);
        min-height: 23rem;
    }

    .reply-card {
        width: min(90vw, 44rem);
    }

    .admin-scroll-panel {
        max-height: none;
        padding-right: 0;
        overflow: visible;
    }

    .chat-composer__footer {
        flex-direction: column;
        align-items: stretch;
    }

    .chat-composer__button {
        width: 100%;
    }
}

@media (max-width: 640px) {
    .gate-shell,
    .admin-shell {
        padding: 1rem;
    }

    .gate-card,
    .admin-card,
    .admin-hero {
        border-radius: 1.45rem;
    }

    .gate-card {
        width: min(31rem, 100%);
        padding: 1.5rem;
    }

    .gate-card__title {
        margin-top: 0.9rem;
        font-size: clamp(1.9rem, 8.8vw, 2.95rem);
        line-height: 0.98;
    }

    .story-toolbar {
        top: 0.8rem;
        right: 0.8rem;
    }

    .story-pill {
        padding: 0.6rem 0.82rem;
        font-size: 0.82rem;
    }

    .intro-word {
        min-width: 0;
        font-size: clamp(1.65rem, 7vw, 2.7rem);
    }

    .book-caption--script {
        font-size: clamp(0.98rem, 3.8vw, 1.2rem);
        line-height: 1.48;
    }

    .book-frame--single {
        width: min(74vw, 31rem);
    }

    .message-bubble {
        max-width: 92%;
    }

    .reply-form__footer {
        flex-direction: column;
        align-items: stretch;
    }

    .reply-form__button {
        width: 100%;
    }

    .chat-composer__field {
        min-height: 5.1rem;
    }
}

@media (pointer: coarse) and (max-width: 960px) {
    :root {
        --shadow: 0 16px 42px rgba(92, 38, 61, 0.14);
    }

    .gate-shell {
        padding:
            max(1rem, env(safe-area-inset-top))
            max(1rem, env(safe-area-inset-right))
            max(1rem, env(safe-area-inset-bottom))
            max(1rem, env(safe-area-inset-left));
    }

    .gate-card {
        width: min(30rem, 100%);
        padding: 1.35rem;
        border-radius: 1.5rem;
    }

    .gate-card__spark {
        font-size: 0.74rem;
        letter-spacing: 0.12em;
    }

    .gate-card__title {
        margin-top: 0.85rem;
        font-size: clamp(1.75rem, 8vw, 2.9rem);
        line-height: 1;
        letter-spacing: -0.04em;
    }

    .gate-card__text {
        font-size: 0.98rem;
        line-height: 1.45;
    }

    .gate-form__input {
        font-size: 16px;
    }

    .story-shell--mobile .story-stage::before {
        width: 22rem;
        height: 22rem;
        left: -7rem;
        bottom: -10rem;
    }

    .story-shell--mobile .story-stage::after {
        width: 18rem;
        height: 18rem;
        right: -5rem;
        top: -7rem;
    }

    .story-shell--mobile .story-toolbar {
        top: max(0.7rem, env(safe-area-inset-top));
        left: max(0.7rem, env(safe-area-inset-left));
        right: max(0.7rem, env(safe-area-inset-right));
        justify-content: flex-end;
        flex-wrap: wrap;
        gap: 0.45rem;
    }

    .story-shell--mobile .story-pill {
        padding: 0.62rem 0.82rem;
        font-size: 0.78rem;
        line-height: 1.15;
        max-width: min(48vw, 12rem);
        justify-content: center;
        text-align: center;
        box-shadow: 0 8px 20px rgba(100, 52, 71, 0.1);
        backdrop-filter: none;
    }

    .story-shell--mobile .rotate-toast {
        top: calc(max(0.7rem, env(safe-area-inset-top)) + 3rem);
        max-width: calc(100vw - 1.4rem);
        padding: 0.68rem 0.9rem;
        font-size: 0.8rem;
        text-align: center;
        box-shadow: 0 10px 22px rgba(90, 47, 66, 0.1);
        backdrop-filter: none;
    }

    .story-shell--mobile .tap-hint {
        bottom: max(0.85rem, env(safe-area-inset-bottom));
        max-width: calc(100vw - 1.3rem);
        padding: 0.55rem 0.8rem;
        font-size: 0.66rem;
        letter-spacing: 0.09em;
        text-align: center;
        box-shadow: 0 8px 20px rgba(90, 47, 66, 0.1);
        backdrop-filter: none;
    }

    .story-shell--mobile .scene {
        padding:
            max(5.4rem, calc(env(safe-area-inset-top) + 4.6rem))
            max(0.8rem, env(safe-area-inset-right))
            max(4.5rem, calc(env(safe-area-inset-bottom) + 3.5rem))
            max(0.8rem, env(safe-area-inset-left));
    }

    .story-shell--phone-landscape .scene {
        padding:
            max(3.2rem, calc(env(safe-area-inset-top) + 2.5rem))
            max(0.8rem, env(safe-area-inset-right))
            max(2.8rem, calc(env(safe-area-inset-bottom) + 2rem))
            max(0.8rem, env(safe-area-inset-left));
    }

    .story-shell--phone-portrait .story-toolbar {
        justify-content: space-between;
    }

    .story-shell--mobile .intro-word-group {
        gap: 0.55rem;
        max-width: 100%;
    }

    .story-shell--mobile .intro-word {
        min-width: 0;
        padding: 0.78rem 1rem;
        border-radius: 1.15rem;
        font-size: clamp(1.4rem, 5.2vw, 2.5rem);
    }

    .story-shell--mobile .emoji-heart {
        width: min(80vw, 18rem);
    }

    .story-shell--mobile .book-scene {
        gap: 0.85rem;
    }

    .story-shell--mobile .book-caption-shell {
        width: min(96vw, 42rem);
        padding: 0.78rem 0.92rem 0.88rem;
        border-radius: 1.2rem;
        box-shadow: 0 10px 24px rgba(104, 50, 72, 0.08);
        backdrop-filter: none;
    }

    .story-shell--mobile .book-caption-shell::before {
        inset: auto 0.9rem 0.58rem 0.9rem;
    }

    .story-shell--mobile .book-caption--script {
        gap: 0.12em 0.32em;
        font-size: clamp(0.86rem, 2.4vw, 1.08rem);
        line-height: 1.44;
    }

    .story-shell--mobile .book-frame {
        width: min(96vw, 58rem);
        padding: 0.75rem;
        border-radius: 1.45rem;
        box-shadow: 0 16px 34px rgba(92, 38, 61, 0.12);
    }

    .story-shell--mobile .book-frame::before {
        inset: 0.58rem;
        border-radius: 1rem;
    }

    .story-shell--mobile .book-page,
    .story-shell--mobile .single-page,
    .story-shell--mobile .book-page-turn__face,
    .story-shell--mobile .book-page-turn-leaf__surface {
        border-radius: 1rem;
        box-shadow:
            inset 0 0 0 1px rgba(127, 77, 98, 0.06),
            0 12px 22px rgba(83, 37, 55, 0.08);
    }

    .story-shell--mobile .book-page__image,
    .story-shell--mobile .single-page__image {
        border-radius: inherit;
    }

    .story-shell--mobile .book-frame--flip::after {
        top: 0.78rem;
        bottom: 0.78rem;
    }

    .story-shell--mobile .book-page-turn-leaf__surface::after,
    .story-shell--mobile .book-page-turn__face::after,
    .story-shell--mobile .book-frame__turn-sheet::before,
    .story-shell--mobile .single-page__turn-sheet::before {
        opacity: 0.16;
    }

    .story-shell--mobile .photo-heart {
        width: min(96vw, 44rem);
        height: min(78%, 22rem);
    }

    .story-shell--mobile .photo-heart__glow,
    .story-shell--mobile .emoji-heart__glow {
        filter: blur(12px);
        opacity: 0.72;
    }

    .story-shell--mobile .photo-heart__flyby {
        width: clamp(6.9rem, 18vw, 8.6rem);
        padding: 0.24rem;
        border-radius: 0.96rem;
        box-shadow: 0 10px 20px rgba(97, 46, 68, 0.12);
    }

    .story-shell--mobile .photo-heart__item {
        width: clamp(4.25rem, 9.2vw, 5.15rem);
        padding: 0.24rem;
        border-radius: 0.96rem;
        box-shadow: 0 10px 20px rgba(97, 46, 68, 0.14);
    }

    .story-shell--mobile .photo-heart__image {
        border-radius: 0.8rem;
    }

    .story-shell--mobile .chat-panel {
        width: min(95vw, 34rem);
        height: min(100%, 34rem);
        max-height: calc(100% - 0.25rem);
        min-height: 0;
        padding: 0.95rem;
        border-radius: 1.35rem;
        box-shadow: 0 14px 30px rgba(92, 38, 61, 0.12);
        backdrop-filter: none;
    }

    .story-shell--mobile .chat-panel__header {
        gap: 0.65rem;
        padding-bottom: 0.7rem;
    }

    .story-shell--mobile .chat-panel__title {
        font-size: 0.82rem;
    }

    .story-shell--mobile .messages-feed {
        gap: 0.6rem;
        padding-top: 0.9rem;
        overflow-y: auto;
        overscroll-behavior: contain;
        -webkit-overflow-scrolling: touch;
    }

    .story-shell--phone-portrait .chat-panel,
    .story-shell--phone-portrait .messages-feed,
    .story-shell--phone-portrait .chat-composer__field {
        touch-action: auto;
    }

    .story-shell--mobile .message-bubble {
        max-width: 88%;
        padding: 0.74rem 0.88rem;
        font-size: 0.94rem;
        line-height: 1.38;
        box-shadow: 0 8px 18px rgba(91, 44, 64, 0.08);
    }

    .story-shell--mobile .typing-indicator {
        margin-top: 0.75rem;
        padding: 0.72rem 0.88rem;
    }

    .story-shell--mobile .chat-composer {
        margin-top: 0.8rem;
        padding-top: 0.8rem;
    }

    .story-shell--mobile .chat-composer__field {
        min-height: 4.6rem;
        font-size: 16px;
    }

    .story-shell--mobile .chat-composer__button {
        width: 100%;
    }

    .story-shell--mobile .finale-title {
        width: min(90vw, 28rem);
        font-size: clamp(2.1rem, 8vw, 4.2rem);
    }

    .story-shell--mobile .finale-echo {
        font-size: clamp(1.2rem, 4.8vw, 2.8rem);
    }

    .story-shell--mobile .ambient-fall__item {
        filter: none;
        opacity: 0.82;
    }
}

@media (pointer: coarse) and (max-width: 640px) {
    .story-shell--mobile .story-toolbar {
        justify-content: center;
    }

    .story-shell--phone-portrait .story-toolbar {
        justify-content: space-between;
    }

    .story-shell--phone-portrait .scene {
        padding:
            max(5.9rem, calc(env(safe-area-inset-top) + 5.1rem))
            max(0.65rem, env(safe-area-inset-right))
            max(4.7rem, calc(env(safe-area-inset-bottom) + 3.8rem))
            max(0.65rem, env(safe-area-inset-left));
    }

    .story-shell--mobile .book-frame {
        width: min(97vw, 52rem);
        padding: 0.68rem;
    }

    .story-shell--mobile .book-caption-shell {
        width: min(97vw, 40rem);
    }

    .story-shell--mobile .photo-heart {
        height: min(76%, 19.5rem);
    }

    .story-shell--mobile .photo-heart__flyby {
        width: clamp(6rem, 23vw, 7.8rem);
    }

    .story-shell--mobile .photo-heart__item {
        width: clamp(4rem, 12vw, 4.9rem);
    }

    .story-shell--mobile .chat-panel {
        width: min(96vw, 32rem);
        padding: 0.88rem;
    }

    .story-shell--mobile .finale-title {
        width: min(94vw, 24rem);
        font-size: clamp(1.9rem, 9vw, 3.4rem);
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation: none !important;
        transition: none !important;
        scroll-behavior: auto !important;
    }

    .tap-hint,
    .rotate-toast {
        opacity: 1 !important;
        transform: translateX(-50%) !important;
    }
}

@keyframes ambientFall {
    0% {
        opacity: 0;
        transform: translate3d(0, -12vh, 0) rotate(0deg);
    }
    10% {
        opacity: 0.95;
    }
    100% {
        opacity: 0;
        transform: translate3d(var(--drift), 120vh, 0) rotate(220deg);
    }
}

@keyframes iphoneReveal {
    to {
        opacity: 1;
        filter: blur(0);
        transform: translateY(0) scale(1);
    }
}

@keyframes emojiBuild {
    0% {
        opacity: 0;
        transform: scale(0.25) rotate(-22deg);
    }
    75% {
        opacity: 1;
        transform: scale(1.08) rotate(4deg);
    }
    100% {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
}

@keyframes emojiFloat {
    50% {
        transform: translateY(-0.45rem) scale(1.02);
    }
}

@keyframes pageSwingLeft {
    0% {
        opacity: 0;
        transform: rotateY(22deg) translateX(1.05rem) scale(0.992);
    }
    36% {
        opacity: 1;
        transform: rotateY(8deg) translateX(0.32rem) scale(0.997);
    }
    100% {
        opacity: 1;
        transform: rotateY(0deg) translateX(0);
    }
}

@keyframes pageSwingRight {
    0% {
        opacity: 0;
        transform: rotateY(-8deg) translateX(-0.45rem) scale(0.996);
    }
    40% {
        opacity: 1;
        transform: rotateY(-3deg) translateX(-0.16rem) scale(0.998);
    }
    100% {
        opacity: 1;
        transform: rotateY(0deg) translateX(0);
    }
}

@keyframes spreadPageFlip {
    0% {
        opacity: 1;
        transform: perspective(2600px) translateX(0) rotateY(0deg) scaleX(1);
    }
    12% {
        opacity: 1;
        transform: perspective(2600px) translateX(-0.04rem) rotateY(-8deg) scaleX(0.998);
    }
    32% {
        transform: perspective(2600px) translateX(-0.1rem) rotateY(-28deg) scaleX(0.986);
    }
    56% {
        transform: perspective(2600px) translateX(-0.22rem) rotateY(-74deg) scaleX(0.95);
    }
    78% {
        opacity: 1;
        transform: perspective(2600px) translateX(-0.36rem) rotateY(-128deg) scaleX(0.988);
    }
    96% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: perspective(2600px) translateX(-0.42rem) rotateY(-179.6deg) scaleX(1);
    }
}

@keyframes spreadPageFlipFront {
    0% {
        opacity: 1;
        transform: perspective(2600px) translateX(0) rotateY(0deg) scaleX(1);
    }
    14% {
        opacity: 1;
        transform: perspective(2600px) translateX(-0.02rem) rotateY(-8deg) scaleX(0.998);
    }
    34% {
        opacity: 1;
        transform: perspective(2600px) translateX(-0.08rem) rotateY(-28deg) scaleX(0.986);
    }
    49.5% {
        opacity: 1;
        transform: perspective(2600px) translateX(-0.18rem) rotateY(-89.5deg) scaleX(0.95);
    }
    50%,
    100% {
        opacity: 0;
        transform: perspective(2600px) translateX(-0.18rem) rotateY(-89.5deg) scaleX(0.95);
    }
}

@keyframes spreadPageFlipBack {
    0%,
    49.5% {
        opacity: 0;
        transform: perspective(2600px) translateX(-0.18rem) rotateY(-90.5deg) scaleX(0.95);
    }
    50% {
        opacity: 1;
        transform: perspective(2600px) translateX(-0.18rem) rotateY(-90.5deg) scaleX(0.95);
    }
    70% {
        opacity: 1;
        transform: perspective(2600px) translateX(-0.28rem) rotateY(-128deg) scaleX(0.982);
    }
    88% {
        opacity: 1;
        transform: perspective(2600px) translateX(-0.36rem) rotateY(-158deg) scaleX(0.994);
    }
    99% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: perspective(2600px) translateX(-0.42rem) rotateY(-179.6deg) scaleX(1);
    }
}

@keyframes coverOpenFlip {
    0% {
        opacity: 1;
        transform: perspective(4600px) translateX(0) rotateY(0deg) scaleX(1);
    }
    16% {
        opacity: 1;
        transform: perspective(4600px) translateX(-0.02rem) rotateY(-5deg) scaleX(0.998);
    }
    38% {
        transform: perspective(4600px) translateX(-0.06rem) rotateY(-18deg) scaleX(0.988);
    }
    62% {
        transform: perspective(4600px) translateX(-0.15rem) rotateY(-66deg) scaleX(0.952);
    }
    84% {
        opacity: 1;
        transform: perspective(4600px) translateX(-0.24rem) rotateY(-130deg) scaleX(0.99);
    }
    100% {
        opacity: 1;
        transform: perspective(4600px) translateX(-0.3rem) rotateY(-179.6deg) scaleX(1);
    }
}

@keyframes coverOpenFlipFront {
    0% {
        opacity: 1;
        transform: perspective(4600px) translateX(0) rotateY(0deg) scaleX(1);
    }
    18% {
        opacity: 1;
        transform: perspective(4600px) translateX(-0.02rem) rotateY(-6deg) scaleX(0.998);
    }
    38% {
        opacity: 1;
        transform: perspective(4600px) translateX(-0.06rem) rotateY(-18deg) scaleX(0.988);
    }
    49.5% {
        opacity: 1;
        transform: perspective(4600px) translateX(-0.12rem) rotateY(-89.5deg) scaleX(0.95);
    }
    50%,
    100% {
        opacity: 0;
        transform: perspective(4600px) translateX(-0.12rem) rotateY(-89.5deg) scaleX(0.95);
    }
}

@keyframes coverOpenFlipBack {
    0%,
    49.5% {
        opacity: 0;
        transform: perspective(4600px) translateX(-0.12rem) rotateY(-90.5deg) scaleX(0.95);
    }
    50% {
        opacity: 1;
        transform: perspective(4600px) translateX(-0.12rem) rotateY(-90.5deg) scaleX(0.95);
    }
    72% {
        opacity: 1;
        transform: perspective(4600px) translateX(-0.2rem) rotateY(-132deg) scaleX(0.986);
    }
    89% {
        opacity: 1;
        transform: perspective(4600px) translateX(-0.26rem) rotateY(-160deg) scaleX(0.996);
    }
    99% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: perspective(4600px) translateX(-0.3rem) rotateY(-179.6deg) scaleX(1);
    }
}

@keyframes realisticPageFlip {
    0% {
        opacity: 1;
        transform: perspective(2400px) rotateY(0deg);
    }
    14% {
        opacity: 1;
        transform: perspective(2400px) rotateY(-7deg);
    }
    36% {
        transform: perspective(2400px) rotateY(-28deg);
    }
    62% {
        transform: perspective(2400px) rotateY(-78deg);
    }
    84% {
        opacity: 1;
        transform: perspective(2400px) rotateY(-132deg);
    }
    94% {
        opacity: 0.34;
    }
    100% {
        opacity: 0;
        transform: perspective(2400px) rotateY(-179.6deg);
    }
}

@keyframes baseLeftPageFade {
    0%,
    98.8% {
        opacity: 1;
    }
    100% {
        opacity: 0;
    }
}

@keyframes nextLeftPageReveal {
    0%,
    99.2% {
        opacity: 0;
    }
    100% {
        opacity: 1;
    }
}

@keyframes nextRightPageReveal {
    0%,
    98.5% {
        opacity: 0;
    }
    99.4% {
        opacity: 0.45;
    }
    100% {
        opacity: 1;
    }
}

@keyframes coverBaseLeftReveal {
    0%,
    44% {
        opacity: 0;
    }
    70% {
        opacity: 0.9;
    }
    100% {
        opacity: 1;
    }
}

@keyframes coverInsidePageFade {
    0%,
    48% {
        opacity: 1;
    }
    62% {
        opacity: 0.18;
    }
    100% {
        opacity: 0;
    }
}

@keyframes coverRightPageHold {
    0%,
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes finalPageFlipRight {
    0% {
        opacity: 0.98;
        transform: perspective(2400px) translateX(0) rotateY(0deg) translateZ(0);
    }
    18% {
        opacity: 0.99;
        transform: perspective(2400px) translateX(0.04rem) rotateY(8deg) translateZ(0);
    }
    38% {
        opacity: 1;
        transform: perspective(2400px) translateX(0.18rem) rotateY(26deg) translateZ(0);
    }
    64% {
        opacity: 0.98;
        transform: perspective(2400px) translateX(calc((var(--book-page-side) + var(--book-spine-width) + (var(--book-spread-gap) * 2)) * 0.58)) rotateY(92deg) translateZ(0);
    }
    100% {
        opacity: 1;
        transform: perspective(2400px) translateX(calc(var(--book-page-side) + var(--book-spine-width) + (var(--book-spread-gap) * 2))) rotateY(179deg) translateZ(0);
    }
}

@keyframes bookPageTurn {
    0% {
        opacity: 0.92;
        transform: perspective(1800px) rotateY(0deg) translateZ(0);
    }
    28% {
        opacity: 0.96;
        transform: perspective(1800px) rotateY(-34deg) translateZ(0);
    }
    62% {
        opacity: 1;
        transform: perspective(1800px) rotateY(-98deg) translateZ(0);
    }
    100% {
        opacity: 0;
        transform: perspective(1800px) rotateY(-179deg) translateZ(0);
    }
}

@keyframes bookTurnShadow {
    0% {
        opacity: 0.34;
        transform: perspective(1800px) rotateY(0deg) scaleX(1);
    }
    50% {
        opacity: 0.18;
        transform: perspective(1800px) rotateY(-72deg) scaleX(0.72);
    }
    100% {
        opacity: 0;
        transform: perspective(1800px) rotateY(-160deg) scaleX(0.34);
    }
}

@keyframes singlePageTurn {
    0% {
        opacity: 0.96;
        transform: perspective(1800px) translateX(0) rotateY(0deg) translateZ(0);
    }
    16% {
        opacity: 0.97;
        transform: perspective(1800px) translateX(-0.08rem) rotateY(-8deg) translateZ(0);
    }
    34% {
        opacity: 0.98;
        transform: perspective(1800px) translateX(-0.22rem) rotateY(-28deg) translateZ(0);
    }
    58% {
        opacity: 1;
        transform: perspective(1800px) translateX(-0.6rem) rotateY(-70deg) translateZ(0);
    }
    80% {
        opacity: 0.95;
        transform: perspective(1800px) translateX(-1rem) rotateY(-128deg) translateZ(0);
    }
    100% {
        opacity: 0;
        transform: perspective(1800px) translateX(-1.28rem) rotateY(-179deg) translateZ(0);
    }
}

@keyframes singlePageShadow {
    0% {
        opacity: 0.32;
        transform: perspective(1800px) rotateY(0deg) scaleX(1);
    }
    56% {
        opacity: 0.14;
        transform: perspective(1800px) rotateY(-72deg) scaleX(0.74);
    }
    100% {
        opacity: 0;
        transform: perspective(1800px) rotateY(-160deg) scaleX(0.36);
    }
}

@keyframes singlePageReveal {
    0% {
        opacity: 0;
        transform: scale(0.992);
    }
    68% {
        opacity: 0;
        transform: scale(0.996);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes pageSettleIn {
    0% {
        opacity: 0;
        transform: translateY(1rem) scale(0.98);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes photoFlyAcross {
    0% {
        opacity: 0;
        transform: var(--flight-start);
    }
    10% {
        opacity: 0.92;
    }
    38% {
        opacity: 1;
        transform: var(--flight-middle);
    }
    72% {
        opacity: 1;
        transform: var(--flight-middle-late);
    }
    92% {
        opacity: 0.82;
    }
    100% {
        opacity: 0;
        transform: var(--flight-end);
    }
}

@keyframes photoHeartBuild {
    0% {
        opacity: 0;
        transform: var(--build-transform);
        filter: blur(6px);
        box-shadow: 0 24px 44px rgba(97, 46, 68, 0.16);
    }
    62% {
        opacity: 1;
    }
    100% {
        opacity: 1;
        transform: var(--target-transform);
        filter: blur(0);
        box-shadow: 0 18px 32px rgba(97, 46, 68, 0.18);
    }
}

@keyframes bubbleIn {
    0% {
        opacity: 0;
        transform: translateY(18px) scale(0.94);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes typing {
    0%,
    80%,
    100% {
        transform: translateY(0);
        opacity: 0.45;
    }
    40% {
        transform: translateY(-0.25rem);
        opacity: 1;
    }
}

@keyframes flyEcho {
    0% {
        opacity: 0;
        transform: translate3d(-50%, -50%, -30rem) scale(0.35);
    }
    15% {
        opacity: 0.75;
    }
    100% {
        opacity: 0;
        transform: translate3d(-50%, -50%, 24rem) scale(1.18);
    }
}

@keyframes finalePulse {
    0% {
        transform: translate(-50%, -50%) scale(1);
    }
    45% {
        transform: translate(-50%, -50%) scale(1.05);
    }
    100% {
        transform: translate(-50%, -50%) scale(1);
    }
}

@keyframes titleFloat {
    50% {
        transform: translateY(-0.22rem);
    }
}

@keyframes tapPulse {
    50% {
        transform: translateX(-50%) translateY(-0.22rem);
    }
}

@keyframes spinHint {
    50% {
        transform: rotate(90deg);
    }
    100% {
        transform: rotate(180deg);
    }
}