:root {
    --season-page-bg: #fffdf8;
    --season-glow-1: rgba(212, 165, 116, 0.14);
    --season-glow-2: rgba(10, 61, 46, 0.08);
    --season-ornament: rgba(212, 165, 116, 0.12);
    --season-outline: rgba(212, 165, 116, 0.18);
    --season-accent: #c68b49;
    --season-accent-deep: #8b5d35;
    --season-shadow: rgba(139, 93, 53, 0.16);
    --season-shadow-strong: rgba(139, 93, 53, 0.24);
    --season-surface: rgba(255, 255, 255, 0.9);
    --season-card-tint: rgba(255, 248, 235, 0.72);
    --season-chip-bg: rgba(255, 255, 255, 0.16);
    --season-chip-border: rgba(255, 255, 255, 0.28);
    --season-chip-text: #ffffff;
    --season-day-overlay: rgba(255, 244, 220, 0.04);
    --season-night-overlay: rgba(12, 35, 52, 0);
}

html[data-season="summer"] {
    --season-page-bg: #fff8ef;
    --season-glow-1: rgba(241, 153, 74, 0.24);
    --season-glow-2: rgba(255, 210, 128, 0.18);
    --season-ornament: rgba(255, 210, 128, 0.18);
    --season-outline: rgba(214, 124, 58, 0.22);
    --season-accent: #d98a33;
    --season-accent-deep: #9f5b25;
    --season-shadow: rgba(217, 138, 51, 0.15);
    --season-shadow-strong: rgba(159, 91, 37, 0.24);
    --season-card-tint: rgba(255, 237, 210, 0.8);
    --season-day-overlay: rgba(255, 205, 128, 0.055);
}

html[data-season="autumn"] {
    --season-page-bg: #fcf6f0;
    --season-glow-1: rgba(160, 98, 54, 0.2);
    --season-glow-2: rgba(214, 151, 105, 0.17);
    --season-ornament: rgba(189, 120, 73, 0.14);
    --season-outline: rgba(136, 87, 54, 0.22);
    --season-accent: #b77342;
    --season-accent-deep: #865133;
    --season-shadow: rgba(134, 81, 51, 0.14);
    --season-shadow-strong: rgba(134, 81, 51, 0.22);
    --season-card-tint: rgba(248, 233, 220, 0.82);
    --season-day-overlay: rgba(174, 111, 64, 0.045);
}

html[data-season="winter"] {
    --season-page-bg: #f5fafe;
    --season-glow-1: rgba(97, 144, 184, 0.18);
    --season-glow-2: rgba(185, 218, 242, 0.16);
    --season-ornament: rgba(143, 188, 219, 0.14);
    --season-outline: rgba(93, 137, 179, 0.2);
    --season-accent: #5f8fb6;
    --season-accent-deep: #355e85;
    --season-shadow: rgba(53, 94, 133, 0.14);
    --season-shadow-strong: rgba(53, 94, 133, 0.22);
    --season-card-tint: rgba(234, 245, 252, 0.82);
    --season-day-overlay: rgba(156, 196, 226, 0.055);
}

html[data-season="spring"] {
    --season-page-bg: #f9fff7;
    --season-glow-1: rgba(118, 177, 97, 0.18);
    --season-glow-2: rgba(198, 230, 179, 0.16);
    --season-ornament: rgba(158, 210, 124, 0.14);
    --season-outline: rgba(101, 158, 83, 0.2);
    --season-accent: #6fa253;
    --season-accent-deep: #4c7d3f;
    --season-shadow: rgba(76, 125, 63, 0.14);
    --season-shadow-strong: rgba(76, 125, 63, 0.22);
    --season-card-tint: rgba(237, 248, 229, 0.82);
    --season-day-overlay: rgba(176, 220, 145, 0.05);
}

html[data-day-period="morning"] {
    --season-night-overlay: rgba(255, 232, 184, 0.035);
}

html[data-day-period="evening"] {
    --season-night-overlay: rgba(148, 87, 58, 0.045);
}

html[data-day-period="night"] {
    --season-night-overlay: rgba(7, 25, 42, 0.075);
}

body {
    background-color: var(--season-page-bg);
    isolation: isolate;
    transition: background-color 0.35s ease;
}

body::before,
body::after {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: -1;
    transition: opacity 0.35s ease, background 0.35s ease;
}

body::before {
    background:
        radial-gradient(circle at 82% 12%, var(--season-glow-1), transparent 36%),
        radial-gradient(circle at 18% 88%, var(--season-glow-2), transparent 38%);
}

body::after {
    background:
        linear-gradient(180deg, var(--season-day-overlay), var(--season-night-overlay)),
        linear-gradient(140deg, transparent 15%, var(--season-ornament) 50%, transparent 85%);
    opacity: 0.65;
}

.season-ambient {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.season-ambient span {
    position: absolute;
    display: block;
    opacity: 0;
    transition: opacity 0.45s ease, transform 0.45s ease;
}

.season-ambient__sun {
    top: 118px;
    right: 8vw;
    width: clamp(72px, 8vw, 118px);
    aspect-ratio: 1;
    border-radius: 50%;
    background:
        radial-gradient(circle, rgba(255, 233, 174, 0.42), rgba(255, 190, 91, 0.12) 58%, transparent 70%);
    filter: blur(0.2px);
}

.season-ambient__leaf {
    width: 16px;
    height: 9px;
    border-radius: 100% 0 100% 0;
    background: rgba(181, 104, 50, 0.34);
    transform: rotate(22deg);
}

.season-ambient__leaf--one {
    top: 28vh;
    left: 8vw;
}

.season-ambient__leaf--two {
    top: 58vh;
    right: 10vw;
    width: 13px;
    height: 8px;
}

.season-ambient__mate {
    right: 7vw;
    bottom: 9vh;
    width: 36px;
    height: 30px;
    border-radius: 8px 8px 16px 16px;
    border: 2px solid rgba(70, 117, 87, 0.28);
    background:
        radial-gradient(ellipse at 50% 15%, rgba(231, 242, 232, 0.56), transparent 34%),
        linear-gradient(145deg, rgba(116, 84, 53, 0.28), rgba(58, 104, 78, 0.24));
}

.season-ambient__mate::before,
.season-ambient__mate::after {
    content: "";
    position: absolute;
    left: 13px;
    bottom: 28px;
    width: 5px;
    height: 26px;
    border-radius: 999px;
    background: rgba(128, 160, 176, 0.24);
    filter: blur(2px);
    animation: seasonSteam 4.8s ease-in-out infinite;
}

.season-ambient__mate::after {
    left: 21px;
    height: 22px;
    animation-delay: 1.1s;
}

.season-ambient__sprout {
    left: 9vw;
    bottom: 12vh;
    width: 34px;
    height: 38px;
    border-left: 2px solid rgba(103, 158, 83, 0.34);
    transform: rotate(-8deg);
}

.season-ambient__sprout::before,
.season-ambient__sprout::after {
    content: "";
    position: absolute;
    bottom: 16px;
    width: 18px;
    height: 10px;
    border-radius: 100% 0 100% 0;
    background: rgba(118, 177, 97, 0.26);
}

.season-ambient__sprout::before {
    left: 0;
    transform: rotate(-28deg);
}

.season-ambient__sprout::after {
    left: 8px;
    transform: rotate(42deg);
}

html[data-season="summer"] .season-ambient__sun {
    opacity: 1;
    animation: seasonGlow 8s ease-in-out infinite;
}

html[data-season="autumn"] .season-ambient__leaf {
    opacity: 1;
    animation: seasonLeafDrift 11s ease-in-out infinite;
}

html[data-season="autumn"] .season-ambient__leaf--two {
    animation-delay: 2.2s;
}

html[data-season="winter"] .season-ambient__mate {
    opacity: 1;
}

html[data-season="spring"] .season-ambient__sprout {
    opacity: 1;
    animation: seasonSprout 7s ease-in-out infinite;
}

@keyframes seasonGlow {
    0%, 100% { transform: scale(1); opacity: 0.72; }
    50% { transform: scale(1.06); opacity: 1; }
}

@keyframes seasonLeafDrift {
    0%, 100% { transform: translate3d(0, 0, 0) rotate(22deg); }
    50% { transform: translate3d(16px, 9px, 0) rotate(36deg); }
}

@keyframes seasonSteam {
    0%, 100% { transform: translateY(4px) scaleY(0.72); opacity: 0.14; }
    45% { transform: translateY(-7px) scaleY(1.1); opacity: 0.34; }
}

@keyframes seasonSprout {
    0%, 100% { transform: rotate(-8deg) translateY(0); }
    50% { transform: rotate(-4deg) translateY(-3px); }
}

html[data-season] .nav,
html[data-season] .accessibility-bar {
    box-shadow: 0 14px 36px var(--season-shadow);
}

html[data-season] .nav {
    background:
        linear-gradient(180deg, rgba(10, 61, 46, 0.95) 0%, rgba(10, 61, 46, 0.84) 100%),
        radial-gradient(circle at right top, var(--season-glow-1), transparent 46%);
}

html[data-season] .accessibility-bar {
    background:
        linear-gradient(180deg, rgba(248, 246, 240, 0.97), rgba(255, 255, 255, 0.95)) !important;
}

html[data-season] .hero,
html[data-season] .map-hero,
html[data-season] .privacy-hero {
    position: relative;
    overflow: hidden;
}

html[data-season] .hero::before,
html[data-season] .map-hero::before,
html[data-season] .privacy-hero::before,
html[data-season] .hero::after,
html[data-season] .map-hero::after,
html[data-season] .privacy-hero::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    transition: opacity 0.35s ease, background 0.35s ease;
}

html[data-season] .hero::before,
html[data-season] .map-hero::before,
html[data-season] .privacy-hero::before {
    background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.08), transparent 58%),
        radial-gradient(circle at 88% 10%, var(--season-glow-1), transparent 48%);
    opacity: 0.95;
}

html[data-season] .hero::after,
html[data-season] .map-hero::after,
html[data-season] .privacy-hero::after {
    background:
        linear-gradient(180deg, transparent, rgba(8, 30, 24, 0.08)),
        radial-gradient(circle at 16% 0%, var(--season-ornament), transparent 42%);
    opacity: 0.92;
}

html[data-season] :is(
    .section,
    .info-card,
    .quick-link,
    .post-card,
    .sidebar-card,
    .blog-card,
    .map-stage-card,
    .map-panel-card,
    .bridge-card,
    .privacy-toc,
    .privacy-highlight,
    .privacy-contact-box,
    .search-modal-dialog,
    .search-result-card,
    .search-empty-state
) {
    background-image:
        linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(255, 255, 255, 0.89)),
        radial-gradient(circle at top right, var(--season-card-tint), transparent 68%);
    box-shadow:
        inset 0 0 0 1px var(--season-outline),
        0 18px 36px var(--season-shadow);
    transition: background 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}

html[data-season] :is(
    .map-overview-stat,
    .map-stat-chip,
    .map-stage-badge,
    .map-filter-btn,
    .map-panel-group-btn,
    .search-close-btn,
    .current-language,
    .nav-search-btn,
    .contrast-btn
) {
    transition: background 0.35s ease, border-color 0.35s ease, color 0.35s ease, box-shadow 0.35s ease;
}

html[data-season] :is(.map-kicker, .map-panel-kicker, .search-modal-kicker, .map-stage-badge, .search-result-category) {
    color: var(--season-accent-deep);
}

html[data-season] :is(.map-stat-chip, .map-overview-stat, .map-filter-btn, .map-panel-group-btn) {
    border-color: var(--season-outline);
    box-shadow: 0 10px 26px rgba(10, 61, 46, 0.06);
}

html[data-season] :is(.map-action-link.primary, .nav-login-btn, .back-to-top, .map-filter-btn.is-active, .map-panel-group-btn.is-active) {
    background-image: linear-gradient(135deg, var(--season-accent), var(--season-accent-deep));
    box-shadow: 0 16px 30px var(--season-shadow-strong);
    border-color: transparent !important;
    color: #ffffff !important;
}

html[data-season] :is(.current-language, .nav-search-btn, .contrast-btn) {
    border-color: rgba(255, 255, 255, 0.18);
    background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0.08)),
        radial-gradient(circle at top right, var(--season-glow-1), transparent 95%);
}

.season-inline-slot {
    list-style: none;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.season-inline-slot--aux {
    margin-left: 0.2rem;
}

.season-switcher {
    position: relative;
    display: inline-flex;
    align-items: center;
    color: var(--season-chip-text);
}

.season-switcher__trigger {
    min-height: 32px;
    padding: 0.22rem 0.6rem;
    border-radius: 999px;
    border: 1px solid var(--season-chip-border);
    background:
        linear-gradient(135deg, var(--season-chip-bg), rgba(255, 255, 255, 0.08)),
        radial-gradient(circle at top right, var(--season-glow-1), transparent 95%);
    color: inherit;
    display: inline-flex;
    align-items: center;
    gap: 0.42rem;
    font: inherit;
    font-size: 0.74rem;
    font-weight: 700;
    cursor: pointer;
    backdrop-filter: blur(10px);
    box-shadow: 0 10px 24px rgba(10, 61, 46, 0.14);
    transition: background 0.24s ease, border-color 0.24s ease, transform 0.24s ease, box-shadow 0.24s ease;
}

.season-switcher__trigger:hover,
.season-switcher__trigger:focus {
    background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.24), rgba(255, 255, 255, 0.14)),
        radial-gradient(circle at top right, var(--season-glow-1), transparent 95%);
    border-color: rgba(255, 255, 255, 0.44);
    outline: none;
    transform: translateY(-1px);
}

.season-switcher__trigger:focus-visible {
    outline: 2px solid rgba(255, 255, 255, 0.92);
    outline-offset: 2px;
}

.season-switcher__icon {
    font-size: 0.82rem;
    line-height: 1;
}

.season-switcher__current {
    white-space: nowrap;
    letter-spacing: 0;
}

.season-switcher__meta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    min-height: 20px;
    padding: 0 0.35rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.16);
    font-size: 0.62rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0;
}

.season-switcher__popover {
    position: absolute;
    top: calc(100% + 0.45rem);
    right: 0;
    min-width: 170px;
    padding: 0.35rem;
    border-radius: 14px;
    background: #ffffff;
    border: 1px solid rgba(10, 61, 46, 0.12);
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.16);
    opacity: 0;
    visibility: hidden;
    transform: translateY(6px);
    transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s ease;
    z-index: 1002;
}

.season-switcher.is-open .season-switcher__popover {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.season-switcher__option {
    width: 100%;
    border: 0;
    border-radius: 10px;
    background: transparent;
    color: #0a3d2e;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.55rem 0.68rem;
    font: inherit;
    font-size: 0.84rem;
    text-align: left;
}

.season-switcher__option:hover,
.season-switcher__option:focus,
.season-switcher__option.is-active {
    background:
        linear-gradient(135deg, rgba(255, 248, 235, 0.9), rgba(255, 255, 255, 0.96)),
        radial-gradient(circle at top right, var(--season-card-tint), transparent 90%);
    color: var(--season-accent-deep);
    outline: none;
}

.season-switcher__option.is-active::after {
    content: "✓";
    color: var(--season-accent-deep);
    font-weight: 700;
}

.season-switcher--surface {
    color: #0a3d2e;
}

.season-switcher--surface .season-switcher__trigger {
    background:
        linear-gradient(135deg, var(--season-surface), rgba(255, 255, 255, 0.82)),
        radial-gradient(circle at top right, var(--season-glow-1), transparent 95%);
    border-color: var(--season-outline);
}

.season-switcher--surface .season-switcher__trigger:focus-visible {
    outline-color: rgba(10, 61, 46, 0.85);
}

.season-weather {
    min-height: 32px;
    max-width: 300px;
    display: inline-flex;
    align-items: center;
    gap: 0.38rem;
    padding: 0.22rem 0.58rem;
    border-radius: 999px;
    border: 1px solid rgba(10, 61, 46, 0.14);
    background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.76), rgba(255, 255, 255, 0.56)),
        radial-gradient(circle at top right, var(--season-card-tint), transparent 95%);
    color: #0a3d2e;
    box-shadow: 0 10px 24px rgba(10, 61, 46, 0.08);
    font-size: 0.72rem;
    line-height: 1;
    white-space: nowrap;
}

.season-weather__mark {
    width: 8px;
    height: 8px;
    flex: 0 0 8px;
    border-radius: 50%;
    background: var(--season-accent);
    box-shadow: 0 0 0 4px var(--season-outline);
}

.season-weather__mark.season-asset-loaded {
    width: 18px;
    height: 18px;
    flex-basis: 18px;
    background-color: transparent;
    background-position: center;
    background-repeat: no-repeat;
    background-size: contain;
    box-shadow: none;
}

.season-weather__place {
    font-weight: 700;
}

.season-weather__temp {
    font-size: 0.82rem;
    color: var(--season-accent-deep);
}

.season-weather__condition {
    max-width: 116px;
    overflow: hidden;
    text-overflow: ellipsis;
    color: rgba(10, 61, 46, 0.72);
}

.season-weather.is-unavailable {
    opacity: 0.82;
}

.season-mascot {
    position: relative;
    z-index: 2;
    width: fit-content;
    max-width: min(100%, 240px);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
    padding: 0.35rem 0.62rem;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.26);
    background: rgba(255, 255, 255, 0.13);
    color: #ffffff;
    backdrop-filter: blur(10px);
}

.season-mascot[data-season="summer"] {
    --season-mascot-symbol: "";
}

.season-mascot[data-season="autumn"] {
    --season-mascot-symbol: "";
}

.season-mascot[data-season="winter"] {
    --season-mascot-symbol: "";
}

.season-mascot[data-season="spring"] {
    --season-mascot-symbol: "";
}

.season-mascot--map {
    position: absolute;
    right: clamp(1rem, 3vw, 2rem);
    top: clamp(1rem, 3vw, 1.75rem);
    z-index: 3;
    margin-top: 0;
}

.season-mascot--nav {
    margin-top: 0;
    padding: 0.3rem;
    border-radius: 50%;
}

.season-mascot--nav .season-mascot__context {
    display: none;
}

.season-mascot__asset {
    position: relative;
    width: 28px;
    height: 28px;
    flex: 0 0 28px;
    border-radius: 50%;
    background:
        radial-gradient(circle at 50% 38%, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.42) 42%, transparent 44%),
        linear-gradient(135deg, var(--season-accent), var(--season-accent-deep));
    box-shadow: 0 8px 18px var(--season-shadow-strong);
}

.season-mascot__asset.season-asset-loaded {
    background-color: transparent;
    background-position: center;
    background-repeat: no-repeat;
    background-size: contain;
    box-shadow: 0 8px 18px var(--season-shadow-strong);
}

.season-mascot__asset::after {
    content: "";
    position: absolute;
    inset: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.72);
}

.season-mascot__asset.season-asset-loaded::after {
    display: none;
}

.season-mascot__context {
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0;
    text-transform: uppercase;
}

.season-mascot__sticker {
    width: 18px;
    height: 18px;
    flex: 0 0 18px;
    display: none;
    background-position: center;
    background-repeat: no-repeat;
    background-size: contain;
}

.season-mascot__sticker.season-asset-loaded {
    display: inline-block;
}

.season-mascot--nav .season-mascot__sticker {
    display: none !important;
}

html.season-reduced-motion *,
html.season-reduced-motion *::before,
html.season-reduced-motion *::after {
    animation: none !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
}

@media (max-width: 968px) {
    .season-inline-slot--nav {
        display: flex;
        width: 100%;
        padding: 0.75rem 1.5rem 0.35rem;
    }

    .season-inline-slot--nav .season-switcher,
    .season-inline-slot--nav .season-switcher__trigger {
        width: 100%;
    }

    .season-inline-slot--nav .season-switcher__trigger {
        justify-content: space-between;
        min-height: 38px;
    }

    .accessibility-bar .controls {
        flex-wrap: wrap;
    }

    .season-inline-slot--aux {
        width: 100%;
        justify-content: center;
        padding-top: 0.35rem;
        margin-left: 0;
        flex-wrap: wrap;
    }

    .season-inline-slot--aux .season-switcher {
        width: min(100%, 240px);
    }

    .season-inline-slot--aux .season-switcher__trigger {
        width: 100%;
        justify-content: center;
    }

    .season-weather {
        max-width: min(100%, 270px);
    }

    .season-switcher__popover {
        position: static;
        width: 100%;
        margin-top: 0.45rem;
        box-shadow: none;
        transform: none;
        display: none;
    }

    .season-switcher.is-open .season-switcher__popover {
        display: block;
    }
}

@media (max-width: 640px) {
    .season-weather__place {
        display: none;
    }

    .season-weather__condition {
        max-width: 98px;
    }

    .season-mascot {
        margin-top: 0.75rem;
        padding: 0.3rem 0.52rem;
    }

    .season-mascot--map {
        right: 0.75rem;
        top: 0.75rem;
        margin-top: 0;
    }

    .season-mascot--nav {
        margin-top: 0;
        padding: 0.26rem;
    }

    .season-mascot__context {
        font-size: 0.66rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .season-ambient span,
    .season-ambient__mate::before,
    .season-ambient__mate::after {
        animation: none !important;
    }
}