:root {
    --bg-top: #d9efff;
    --bg-mid: #b6ddff;
    --bg-bottom: #86c5ff;
    --text: #1c4672;
    --text-strong: #0f3258;
    --muted: #5c7da3;
    --white: #ffffff;
    --panel: rgba(255, 255, 255, 0.64);
    --panel-strong: rgba(255, 255, 255, 0.82);
    --line: rgba(64, 123, 182, 0.18);
    --shadow: 0 28px 70px rgba(44, 110, 171, 0.18);
    --blue: #4da7ff;
    --blue-deep: #2b7dd8;
    --powder: #eef8ff;
    --pink: #ffc7dd;
    --pink-deep: #ff98c3;
    --cream: #fff7ef;
    --hamster: #f6d4a2;
    --hamster-deep: #e6b16b;
    --radius-xl: 40px;
    --radius-lg: 30px;
    --radius-md: 22px;
    --font-display: "Avenir Next", "PingFang SC", "Microsoft YaHei", sans-serif;
    --font-soft: "Snell Roundhand", "STKaiti", "KaiTi", cursive;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    color: var(--text);
    font-family: var(--font-display);
    background:
        radial-gradient(circle at 15% 20%, rgba(255, 255, 255, 0.92), transparent 18%),
        radial-gradient(circle at 85% 12%, rgba(255, 255, 255, 0.75), transparent 16%),
        linear-gradient(180deg, var(--bg-top) 0%, var(--bg-mid) 45%, var(--bg-bottom) 100%);
    overflow-x: hidden;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    background:
        linear-gradient(transparent 96%, rgba(255, 255, 255, 0.24) 100%),
        linear-gradient(90deg, transparent 96%, rgba(255, 255, 255, 0.18) 100%);
    background-size: 34px 34px;
    opacity: 0.32;
    pointer-events: none;
}

button {
    font: inherit;
}

.sky {
    position: fixed;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.bubble,
.spark {
    position: absolute;
    border-radius: 999px;
}

.bubble {
    background: rgba(255, 255, 255, 0.34);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.45);
    filter: blur(0.2px);
    animation: float-up 10s ease-in-out infinite;
}

.bubble--one {
    width: 180px;
    height: 180px;
    top: 6%;
    left: -2%;
}

.bubble--two {
    width: 120px;
    height: 120px;
    right: 8%;
    top: 22%;
    animation-delay: -3s;
}

.bubble--three {
    width: 240px;
    height: 240px;
    bottom: 4%;
    right: -4%;
    animation-delay: -6s;
}

.spark {
    width: 14px;
    height: 14px;
    background: rgba(255, 255, 255, 0.9);
    transform: rotate(45deg);
    animation: twinkle 3.6s ease-in-out infinite;
}

.spark--one {
    top: 14%;
    right: 18%;
}

.spark--two {
    left: 12%;
    bottom: 18%;
    animation-delay: -1.2s;
}

.spark--three {
    right: 34%;
    bottom: 28%;
    animation-delay: -2.2s;
}

.page-shell {
    width: min(1180px, calc(100% - 36px));
    margin: 0 auto;
    padding: 28px 0 calc(60px + env(safe-area-inset-bottom));
    position: relative;
    z-index: 1;
}

.hero {
    display: grid;
    grid-template-columns: 0.94fr 1.06fr;
    gap: 28px;
    align-items: center;
    min-height: 100vh;
}

.hero__copy,
.panel,
.closing__bubble {
    border: 1px solid rgba(255, 255, 255, 0.54);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.68), rgba(255, 255, 255, 0.48));
    box-shadow: var(--shadow);
    backdrop-filter: blur(18px);
}

.hero__copy {
    padding: 34px;
    border-radius: var(--radius-xl);
}

.eyebrow {
    margin: 0 0 16px;
    color: var(--blue-deep);
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-size: 0.78rem;
    font-weight: 700;
}

.hero h1,
.panel h2,
.closing h2 {
    margin: 0;
    color: var(--text-strong);
    line-height: 0.95;
    letter-spacing: -0.04em;
}

.hero h1 {
    font-size: clamp(3.4rem, 8vw, 6.5rem);
    display: grid;
    gap: 10px;
}

.hero h1 span {
    font-family: var(--font-soft);
    font-size: 0.56em;
    line-height: 1;
    color: var(--blue-deep);
    letter-spacing: 0;
}

.hero__lead {
    margin: 22px 0 0;
    max-width: 28rem;
    font-size: 1.06rem;
    line-height: 1.9;
    color: var(--muted);
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 28px;
}

.button {
    min-height: 52px;
    padding: 0 22px;
    border: 0;
    border-radius: 999px;
    cursor: pointer;
    transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

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

.button--primary {
    background: linear-gradient(135deg, var(--blue) 0%, #87cfff 100%);
    color: #ffffff;
    box-shadow: 0 16px 32px rgba(61, 144, 221, 0.28);
}

.button--secondary {
    background: rgba(255, 255, 255, 0.66);
    color: var(--blue-deep);
    box-shadow: inset 0 0 0 1px rgba(61, 144, 221, 0.18);
}

.button[disabled] {
    opacity: 0.72;
    cursor: default;
    transform: none;
}

.likes {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin: 28px 0 0;
    padding: 0;
    list-style: none;
}

.likes li {
    padding: 10px 16px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.74);
    color: var(--text);
    box-shadow: inset 0 0 0 1px rgba(77, 167, 255, 0.14);
}

.love-note {
    margin-top: 24px;
    padding: 18px 20px;
    border-radius: 22px;
    background: linear-gradient(135deg, rgba(255, 199, 221, 0.82), rgba(255, 255, 255, 0.88));
    color: #7d4f66;
    font-size: 1rem;
    line-height: 1.8;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.7);
}

.love-note p {
    margin: 0;
}

.hero__art {
    min-height: 680px;
    display: flex;
    align-items: center;
    justify-content: center;
    perspective: 1200px;
}

.poster {
    position: relative;
    width: min(100%, 620px);
    aspect-ratio: 0.9;
    border-radius: 46px;
    padding: 28px;
    background:
        radial-gradient(circle at top left, rgba(255, 255, 255, 0.82), transparent 24%),
        linear-gradient(180deg, rgba(255, 255, 255, 0.84), rgba(221, 241, 255, 0.86));
    border: 1px solid rgba(255, 255, 255, 0.74);
    box-shadow:
        0 30px 80px rgba(44, 110, 171, 0.24),
        inset 0 0 0 10px rgba(255, 255, 255, 0.26);
    transform-style: preserve-3d;
    transition: transform 220ms ease;
}

.poster__top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--blue-deep);
    font-size: 0.8rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.poster__top strong {
    padding: 10px 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.76);
    box-shadow: inset 0 0 0 1px rgba(77, 167, 255, 0.16);
}

.sticker,
.mini-card {
    position: absolute;
    border-radius: 34px;
    background: var(--panel-strong);
    border: 1px solid rgba(255, 255, 255, 0.92);
    box-shadow: 0 18px 40px rgba(54, 122, 181, 0.18);
}

.sticker {
    display: grid;
    place-items: center;
    padding: 22px;
}

.sticker__badge {
    position: absolute;
    top: 14px;
    left: 16px;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.82);
    color: var(--blue-deep);
    font-size: 0.74rem;
    text-transform: uppercase;
    letter-spacing: 0.16em;
}

.sticker--bunny {
    width: 58%;
    height: 54%;
    left: 4%;
    top: 14%;
    transform: rotate(-7deg) translateZ(16px);
}

.sticker--hamster {
    width: 42%;
    height: 38%;
    right: 7%;
    bottom: 18%;
    transform: rotate(7deg) translateZ(28px);
}

.bunny-face,
.hamster-face {
    position: relative;
    width: 100%;
    height: 100%;
}

.ear,
.hamster-ear,
.face,
.eye,
.blush,
.mouth,
.bow,
.cheek,
.nose {
    position: absolute;
}

.ear {
    width: 30%;
    height: 45%;
    top: 2%;
    background: #fefcff;
    border-radius: 999px 999px 42% 42%;
    box-shadow: inset 0 0 0 1px rgba(77, 167, 255, 0.08);
}

.ear::after {
    content: "";
    position: absolute;
    inset: 16% 28% 18%;
    border-radius: 999px;
    background: #ffd1e6;
}

.ear--left {
    left: 20%;
    transform: rotate(-12deg);
}

.ear--right {
    right: 20%;
    transform: rotate(12deg);
}

.face--bunny {
    width: 64%;
    height: 56%;
    left: 18%;
    bottom: 12%;
    background: #fffefe;
    border-radius: 44% 44% 42% 42%;
    box-shadow: inset 0 -10px 24px rgba(173, 214, 246, 0.24);
}

.eye {
    width: 8px;
    height: 14px;
    top: 53%;
    background: #3d6082;
    border-radius: 999px;
}

.eye--left {
    left: 40%;
}

.eye--right {
    right: 40%;
}

.blush {
    width: 14%;
    height: 8%;
    top: 60%;
    background: rgba(255, 199, 221, 0.82);
    border-radius: 999px;
}

.blush--left {
    left: 24%;
}

.blush--right {
    right: 24%;
}

.mouth {
    width: 36px;
    height: 18px;
    left: 50%;
    top: 63%;
    transform: translateX(-50%);
    border-bottom: 3px solid #6d87a4;
    border-radius: 0 0 999px 999px;
}

.bow {
    width: 54px;
    height: 54px;
    right: 19%;
    top: 25%;
    background: var(--pink);
    border-radius: 14px;
    transform: rotate(18deg);
}

.bow::before,
.bow::after {
    content: "";
    position: absolute;
    width: 34px;
    height: 28px;
    background: var(--pink);
    top: 14px;
    border-radius: 14px;
}

.bow::before {
    left: -16px;
    transform: rotate(-22deg);
}

.bow::after {
    right: -16px;
    transform: rotate(22deg);
}

.face--hamster {
    width: 68%;
    height: 62%;
    left: 16%;
    top: 18%;
    background: linear-gradient(180deg, #ffe7bf, var(--hamster));
    border-radius: 48% 48% 44% 44%;
}

.hamster-ear {
    width: 18%;
    height: 18%;
    top: 16%;
    background: var(--hamster-deep);
    border-radius: 999px;
}

.hamster-ear::after {
    content: "";
    position: absolute;
    inset: 18%;
    border-radius: 999px;
    background: #ffd6dd;
}

.hamster-ear--left {
    left: 19%;
}

.hamster-ear--right {
    right: 19%;
}

.cheek {
    width: 18%;
    height: 16%;
    top: 52%;
    background: #fff7ef;
    border-radius: 999px;
}

.cheek--left {
    left: 18%;
}

.cheek--right {
    right: 18%;
}

.nose {
    width: 16px;
    height: 12px;
    left: 50%;
    top: 50%;
    transform: translateX(-50%);
    background: #9d6a55;
    border-radius: 999px;
}

.mouth--hamster {
    top: 57%;
    border-bottom-color: #8b5d4e;
}

.cloud {
    position: absolute;
    background: rgba(255, 255, 255, 0.86);
    border-radius: 999px;
    box-shadow: inset 0 0 0 1px rgba(77, 167, 255, 0.08);
}

.cloud::before,
.cloud::after {
    content: "";
    position: absolute;
    background: inherit;
    border-radius: inherit;
}

.cloud--left {
    width: 110px;
    height: 44px;
    left: 10%;
    bottom: 14%;
}

.cloud--left::before {
    width: 40px;
    height: 40px;
    left: 12px;
    top: -18px;
}

.cloud--left::after {
    width: 52px;
    height: 52px;
    right: 14px;
    top: -26px;
}

.cloud--right {
    width: 138px;
    height: 54px;
    right: 8%;
    top: 16%;
}

.cloud--right::before {
    width: 48px;
    height: 48px;
    left: 14px;
    top: -20px;
}

.cloud--right::after {
    width: 60px;
    height: 60px;
    right: 18px;
    top: -28px;
}

.mini-card {
    padding: 16px 18px;
    display: grid;
    gap: 8px;
    color: var(--blue-deep);
}

.mini-card span {
    font-size: 0.74rem;
    text-transform: uppercase;
    letter-spacing: 0.18em;
}

.mini-card strong {
    font-size: 1.1rem;
    color: var(--text-strong);
}

.mini-card--love {
    left: 9%;
    bottom: 8%;
    transform: rotate(-5deg) translateZ(30px);
}

.mini-card--cute {
    right: 8%;
    top: 14%;
    transform: rotate(5deg) translateZ(24px);
}

.panel {
    margin-top: 20px;
    padding: 30px;
    border-radius: var(--radius-xl);
}

.panel__intro {
    max-width: 680px;
}

.panel__intro h2,
.closing h2 {
    font-size: clamp(2rem, 4.6vw, 3.6rem);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    margin-top: 24px;
}

.info-card {
    min-height: 220px;
    padding: 24px;
    border-radius: 28px;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(234, 246, 255, 0.8));
    box-shadow: inset 0 0 0 1px rgba(77, 167, 255, 0.12);
}

.info-card__label {
    display: inline-flex;
    padding: 9px 12px;
    border-radius: 999px;
    background: linear-gradient(135deg, #dff3ff, #ffffff);
    color: var(--blue-deep);
    text-transform: uppercase;
    font-size: 0.74rem;
    letter-spacing: 0.16em;
}

.info-card h3 {
    margin: 20px 0 10px;
    font-size: 1.4rem;
    line-height: 1.35;
    color: var(--text-strong);
}

.info-card p,
.closing p {
    margin: 0;
    line-height: 1.85;
    color: var(--muted);
}

.closing {
    padding: 24px 0 12px;
}

.closing__bubble {
    padding: 34px;
    border-radius: var(--radius-xl);
    background:
        radial-gradient(circle at top right, rgba(255, 199, 221, 0.48), transparent 26%),
        linear-gradient(180deg, rgba(255, 255, 255, 0.74), rgba(245, 251, 255, 0.6));
    text-align: center;
}

.closing__mini {
    margin: 0 0 12px;
    color: var(--blue-deep);
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-size: 0.76rem;
}

.closing h2 {
    margin-bottom: 14px;
}

.reveal {
    opacity: 0;
    transform: translateY(26px);
    transition: opacity 560ms ease, transform 560ms ease;
}

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

@keyframes float-up {
    0%,
    100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-16px);
    }
}

@keyframes twinkle {
    0%,
    100% {
        transform: rotate(45deg) scale(0.85);
        opacity: 0.55;
    }
    50% {
        transform: rotate(45deg) scale(1.2);
        opacity: 1;
    }
}

@media (max-width: 980px) {
    .hero,
    .card-grid {
        grid-template-columns: 1fr;
    }

    .hero {
        min-height: auto;
        padding-top: 14px;
        gap: 18px;
    }

    .hero__art {
        min-height: 460px;
        order: -1;
    }

    .poster {
        max-width: 560px;
    }
}

@media (max-width: 640px) {
    .page-shell {
        width: min(100% - 18px, 1180px);
        padding-top: 14px;
    }

    .hero__copy,
    .panel,
    .closing__bubble {
        padding: 20px;
        border-radius: 28px;
    }

    .hero {
        gap: 14px;
    }

    .eyebrow {
        margin-bottom: 12px;
        font-size: 0.68rem;
        letter-spacing: 0.14em;
    }

    .hero h1 {
        gap: 6px;
        font-size: clamp(2.5rem, 14vw, 4rem);
    }

    .hero__lead,
    .info-card p,
    .closing p {
        font-size: 0.96rem;
    }

    .hero__lead {
        margin-top: 16px;
        line-height: 1.75;
    }

    .hero__actions {
        flex-direction: column;
        gap: 10px;
        margin-top: 22px;
    }

    .button {
        width: 100%;
    }

    .likes {
        gap: 8px;
        margin-top: 20px;
    }

    .likes li {
        padding: 8px 12px;
        font-size: 0.88rem;
    }

    .love-note {
        margin-top: 18px;
        padding: 14px 16px;
        font-size: 0.92rem;
        line-height: 1.7;
    }

    .hero__art {
        min-height: 390px;
    }

    .poster {
        aspect-ratio: 0.82;
        padding: 16px;
        border-radius: 28px;
    }

    .poster__top {
        font-size: 0.66rem;
        letter-spacing: 0.12em;
    }

    .poster__top strong {
        padding: 8px 10px;
    }

    .sticker,
    .mini-card {
        border-radius: 24px;
    }

    .sticker {
        padding: 16px;
    }

    .sticker__badge {
        top: 10px;
        left: 10px;
        padding: 6px 9px;
        font-size: 0.62rem;
        letter-spacing: 0.12em;
    }

    .sticker--bunny {
        width: 63%;
        height: 50%;
        left: 1%;
        top: 18%;
    }

    .sticker--hamster {
        width: 46%;
        height: 31%;
        right: 2%;
        bottom: 17%;
    }

    .mini-card {
        padding: 10px 12px;
        gap: 5px;
    }

    .mini-card span {
        font-size: 0.62rem;
        letter-spacing: 0.12em;
    }

    .mini-card strong {
        font-size: 0.86rem;
    }

    .cloud--right {
        right: 2%;
        top: 18%;
        transform: scale(0.86);
    }

    .cloud--left {
        left: 2%;
        bottom: 12%;
        transform: scale(0.84);
    }

    .panel {
        margin-top: 14px;
        padding-top: 24px;
    }

    .panel__intro h2,
    .closing h2 {
        font-size: clamp(1.9rem, 9vw, 2.6rem);
    }

    .card-grid {
        gap: 14px;
        margin-top: 18px;
    }

    .info-card {
        min-height: auto;
        padding: 20px;
        border-radius: 22px;
    }

    .info-card h3 {
        margin-top: 16px;
        font-size: 1.15rem;
    }

    .closing {
        padding-top: 16px;
    }
}

@media (max-width: 420px) {
    body::before {
        opacity: 0.18;
    }

    .page-shell {
        width: calc(100% - 14px);
        padding-top: 10px;
    }

    .hero {
        gap: 12px;
    }

    .hero__copy,
    .panel,
    .closing__bubble {
        padding: 18px;
        border-radius: 24px;
    }

    .hero h1 {
        font-size: clamp(2.2rem, 13vw, 3.3rem);
    }

    .hero__lead {
        font-size: 0.92rem;
    }

    .hero__art {
        min-height: 340px;
    }

    .poster {
        aspect-ratio: 0.8;
        padding: 14px;
    }

    .poster__top strong {
        display: none;
    }

    .sticker--bunny {
        width: 67%;
        height: 49%;
        left: -1%;
        top: 19%;
    }

    .sticker--hamster {
        width: 47%;
        height: 29%;
        right: -1%;
        bottom: 18%;
    }

    .mini-card--cute,
    .cloud--right {
        display: none;
    }

    .mini-card--love {
        left: 6%;
        bottom: 8%;
    }

    .cloud--left {
        transform: scale(0.72);
        left: -2%;
        bottom: 10%;
    }

    .likes li {
        font-size: 0.82rem;
    }

    .panel__intro h2,
    .closing h2 {
        font-size: clamp(1.7rem, 8.8vw, 2.3rem);
    }

    .closing__mini {
        margin-bottom: 10px;
        font-size: 0.68rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation: none !important;
        transition-duration: 0.01ms !important;
        transition-delay: 0ms !important;
    }
}