:root {
    --ink: #0a2b42;
    --ink-soft: #2d6693;
    --blue-950: #0a3453;
    --blue-900: #0f4d78;
    --blue-800: #1162a0;
    --blue-700: #1477b8;
    --ice-50: #e7f4ff;
    --ice-100: #d9eeff;
    --ice-200: #c3e4fb;
    --ice-300: #9fd3f7;
    --cyan: #3fb0e8;
    --cyan-deep: #1287c8;
    --mint: #3fcbae;
    --gold: #e6b34f;
    --white: #ffffff;
    --line: rgba(18, 102, 156, .2);
    --shadow: 0 26px 64px rgba(17, 84, 132, .16);
    --radius: 8px;
    --container: 1240px;
    --serif: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
    --sans: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", sans-serif;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    background: var(--ice-50);
}

body {
    margin: 0;
    color: var(--ink);
    background: var(--ice-50);
    font-family: var(--sans);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

body.menu-open {
    overflow: hidden;
}

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

button,
input,
textarea {
    font: inherit;
}

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

svg {
    width: 1em;
    height: 1em;
    fill: none;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 1.8;
}

.svg-sprite {
    position: absolute;
    width: 0;
    height: 0;
    overflow: hidden;
}

.site-container {
    width: min(calc(100% - 48px), var(--container));
    margin-inline: auto;
}

.site-header {
    position: fixed;
    z-index: 80;
    inset: 0 0 auto;
    color: var(--ink);
    border-bottom: 1px solid rgba(255, 255, 255, .66);
    box-shadow: 0 8px 30px rgba(17, 84, 132, .08);
    transition: color .35s ease, border-color .35s ease, box-shadow .35s ease;
}

/* 毛玻璃底色放在伪元素上：header 自身带 backdrop-filter 时，
   会成为 fixed 子元素的包含块，移动端菜单会被压成 0 高度而错位 */
.site-header::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    background: rgba(255, 255, 255, .88);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    transition: background .35s ease;
}

.site-header.is-scrolled {
    color: var(--ink);
    border-color: var(--line);
    box-shadow: 0 8px 34px rgba(17, 84, 132, .14);
}

.site-header.is-scrolled::before {
    background: rgba(255, 255, 255, .97);
}

.header-inner {
    min-height: 78px;
    display: flex;
    align-items: center;
    gap: 32px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    flex: 0 0 auto;
}

.brand-mark {
    width: 38px;
    height: 38px;
    display: grid;
    place-items: center;
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, .8);
    border-radius: var(--radius);
    background: linear-gradient(145deg, #2ba3e0, #0d5f9c);
    box-shadow: 0 10px 24px rgba(58, 156, 198, .2);
    backdrop-filter: blur(12px);
}

.site-header.is-scrolled .brand-mark {
    color: var(--white);
    border-color: transparent;
    background: linear-gradient(135deg, #2499d9, #0d5f9c);
}

.brand-mark svg {
    width: 22px;
    height: 22px;
}

.brand-mark-image {
    border-color: rgba(255, 255, 255, .9);
    background: none;
    box-shadow: 0 10px 24px rgba(17, 84, 132, .28);
}

.brand-mark img {
    width: 100%;
    height: 100%;
    display: block;
    border-radius: inherit;
    object-fit: cover;
}

.brand-copy {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.brand-copy strong {
    font-size: 16px;
    line-height: 1.2;
    letter-spacing: .02em;
}

.brand-copy small {
    font-size: 9px;
    line-height: 1.2;
    letter-spacing: .24em;
    opacity: .66;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 28px;
    margin-left: auto;
}

.main-nav a {
    position: relative;
    padding: 28px 0;
    color: inherit;
    font-size: 14px;
    opacity: .84;
    transition: opacity .2s ease;
}

.main-nav a::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 18px;
    width: 0;
    height: 2px;
    border-radius: 2px;
    background: currentColor;
    transform: translateX(-50%);
    transition: width .25s ease;
}

.main-nav a:hover,
.main-nav a.is-active {
    opacity: 1;
}

.main-nav a:hover::after,
.main-nav a.is-active::after {
    width: 18px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 14px;
}

.header-status {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 12px;
    color: var(--ink-soft);
    opacity: 1;
}

.header-status i,
.data-live i,
.rail-status i {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--mint);
    box-shadow: 0 0 0 5px rgba(122, 224, 193, .13);
}

.header-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 11px 16px;
    color: var(--blue-800);
    border: 1px solid rgba(45, 143, 189, .22);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, .92);
    font-size: 13px;
    font-weight: 700;
    backdrop-filter: blur(12px);
}

.site-header.is-scrolled .header-cta {
    color: var(--white);
    border-color: transparent;
    background: linear-gradient(135deg, #1683c9, #0b5c96);
}

.header-cta svg {
    width: 15px;
    height: 15px;
    transition: transform .2s ease;
}

.header-cta:hover svg {
    transform: translateX(3px);
}

.menu-toggle {
    display: none;
    width: 40px;
    height: 40px;
    padding: 0;
    color: currentColor;
    border: 0;
    border-radius: var(--radius);
    background: transparent;
}

.menu-toggle svg {
    width: 24px;
    height: 24px;
}

.menu-close-icon {
    display: none;
}

.hero {
    position: relative;
    min-height: 820px;
    display: flex;
    align-items: center;
    overflow: hidden;
    color: var(--ink);
    background:
        radial-gradient(circle at 76% 28%, rgba(88, 180, 234, .55), transparent 32%),
        linear-gradient(135deg, #d3eafd, #a6d2f3 54%, #e4f3ff);
}

.hero-media {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 46%;
    filter: saturate(1.08) brightness(1.03) contrast(1.06);
    transform: scale(1.03);
    animation: heroDrift 18s ease-out both;
}

@keyframes heroDrift {
    from { transform: scale(1.1); }
    to { transform: scale(1.03); }
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(90deg, rgba(255, 255, 255, .88) 0%, rgba(244, 251, 255, .66) 26%, rgba(214, 236, 253, .26) 48%, rgba(178, 218, 249, .04) 66%, rgba(178, 218, 249, 0) 82%),
        linear-gradient(180deg, rgba(222, 241, 255, .14), transparent 48%, rgba(168, 214, 248, .16));
}

.hero-frost {
    position: absolute;
    inset: 0;
    opacity: .5;
    background-image:
        radial-gradient(circle at 10% 12%, rgba(255,255,255,.8) 0 1px, transparent 2px),
        radial-gradient(circle at 68% 18%, rgba(255,255,255,.7) 0 1px, transparent 2px),
        radial-gradient(circle at 82% 44%, rgba(255,255,255,.55) 0 1px, transparent 2px),
        linear-gradient(112deg, transparent 42%, rgba(255,255,255,.05) 43%, transparent 44%);
    pointer-events: none;
}

.snow-canvas {
    position: absolute;
    z-index: 6;
    inset: 0;
    width: 100%;
    height: 820px;
    pointer-events: none;
}

.hero-inner {
    position: relative;
    z-index: 8;
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(340px, .75fr);
    align-items: center;
    gap: 70px;
    padding-top: 74px;
}

.hero-copy {
    max-width: 720px;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--blue-700);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .16em;
    text-transform: uppercase;
}

.eyebrow span {
    width: 30px;
    height: 1px;
    background: currentColor;
}

.eyebrow-light {
    color: var(--blue-700);
}

.hero h1 {
    margin: 22px 0 24px;
    font-family: var(--serif);
    font-size: 78px;
    font-weight: 700;
    line-height: 1.08;
    letter-spacing: .01em;
}

.hero h1 span,
.hero h1 strong {
    display: block;
}

.hero h1 strong {
    position: relative;
    width: max-content;
    color: #0e79bd;
    font-weight: 700;
}

.hero h1 strong::after {
    content: "";
    position: absolute;
    z-index: -1;
    left: -8px;
    right: -16px;
    bottom: 3px;
    height: 18px;
    opacity: .24;
    background: linear-gradient(90deg, rgba(63, 176, 232, .85), transparent);
    transform: skewX(-18deg);
}

.hero-copy > p {
    max-width: 650px;
    margin: 0;
    color: #2d6693;
    font-size: 17px;
    line-height: 1.9;
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 34px;
}

.btn {
    min-height: 50px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 0 22px;
    border: 1px solid transparent;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 800;
    transition: transform .2s ease, background .2s ease, border-color .2s ease;
}

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

.btn-primary {
    color: var(--white);
    background: linear-gradient(135deg, #1683c9, #0b5c96);
    box-shadow: 0 16px 34px rgba(11, 92, 150, .32);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #1d91d8, #0c6aa9);
}

.btn-primary svg {
    width: 18px;
    height: 18px;
}

.btn-ghost {
    color: var(--blue-800);
    border-color: rgba(18, 102, 156, .3);
    background: rgba(255, 255, 255, .9);
    backdrop-filter: blur(12px);
}

.btn-ghost:hover {
    border-color: rgba(18, 102, 156, .48);
    background: #ffffff;
}

.hero-notice {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 24px;
    color: #2d6693;
    font-size: 12px;
}

.live-dot {
    position: relative;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--mint);
}

.live-dot::after {
    content: "";
    position: absolute;
    inset: -5px;
    border: 1px solid rgba(122, 224, 193, .45);
    border-radius: 50%;
    animation: pulse 2s ease-out infinite;
}

@keyframes pulse {
    0% { opacity: 1; transform: scale(.8); }
    100% { opacity: 0; transform: scale(1.6); }
}

.hero-observation {
    justify-self: end;
    width: 330px;
    text-align: center;
}

.observation-orbit {
    position: relative;
    width: 280px;
    height: 280px;
    margin: auto;
}

.orbit-ring {
    width: 100%;
    height: 100%;
    overflow: visible;
    transform: rotate(-90deg);
}

.orbit-ring circle {
    fill: none;
    stroke-width: 1;
}

.orbit-ring circle:first-child {
    stroke: rgba(37, 128, 168, .18);
    stroke-dasharray: 2 9;
}

.orbit-progress {
    stroke: #38b4e0;
    stroke-width: 3;
    stroke-linecap: round;
    stroke-dasharray: 578;
    stroke-dashoffset: calc(578 - 578 * var(--orbit-progress, .72));
    filter: drop-shadow(0 0 8px rgba(74, 181, 222, .38));
    animation: drawOrbit 1.6s ease both;
}

@keyframes drawOrbit {
    from { stroke-dashoffset: 578; }
}

.orbit-core {
    position: absolute;
    inset: 37px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, .82);
    border-radius: 50%;
    background: radial-gradient(circle at 40% 35%, rgba(255, 255, 255, .95), rgba(230, 247, 254, .78));
    box-shadow: inset 0 0 60px rgba(103, 200, 236, .12), 0 30px 70px rgba(62, 151, 190, .14);
    backdrop-filter: blur(12px);
}

.orbit-core span {
    font-size: 13px;
    color: #64889b;
}

.orbit-core strong {
    margin: 4px 0 0;
    font-family: var(--serif);
    font-size: 86px;
    line-height: 1;
    color: #1689b7;
    text-shadow: 0 10px 34px rgba(86, 200, 243, .2);
}

.orbit-core small {
    margin-top: 4px;
    font-size: 12px;
    color: #5f9dc9;
}

.orbit-label {
    position: absolute;
    padding: 5px 10px;
    color: var(--blue-800);
    border: 1px solid rgba(255,255,255,.84);
    border-radius: 999px;
    background: rgba(255,255,255,.92);
    box-shadow: 0 8px 22px rgba(61, 146, 184, .1);
    font-size: 11px;
    backdrop-filter: blur(8px);
}

.orbit-label-top { left: 4px; top: 56px; }
.orbit-label-right { right: -4px; top: 128px; }
.orbit-label-bottom { left: 54px; bottom: 12px; }

.observation-caption {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: -8px;
    padding: 0 22px;
    color: #4a8bbc;
    font-size: 11px;
}

.observation-caption strong {
    color: var(--blue-700);
    font-size: 12px;
}

.hero-stat-rail {
    position: absolute;
    z-index: 9;
    left: 50%;
    bottom: 0;
    min-height: 104px;
    display: grid;
    grid-template-columns: repeat(3, 1fr) 1.45fr;
    border: 1px solid rgba(255,255,255,.8);
    border-bottom: 0;
    border-radius: var(--radius) var(--radius) 0 0;
    background: rgba(255, 255, 255, .92);
    box-shadow: 0 -22px 60px rgba(57, 143, 180, .11);
    backdrop-filter: blur(20px);
    transform: translateX(-50%);
}

.hero-stat {
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    padding: 20px 30px;
    border-right: 1px solid var(--line);
}

.hero-stat strong {
    color: var(--ink);
    font-size: 25px;
    line-height: 1;
}

.hero-stat > span {
    color: #5793c1;
    font-size: 11px;
}

.hero-stat-wide {
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
}

.rail-label {
    grid-column: 1 / -1;
}

.rail-status {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
}

.scroll-cue {
    position: absolute;
    z-index: 10;
    left: 28px;
    bottom: 120px;
    width: 28px;
    height: 54px;
    display: grid;
    place-items: start center;
    padding-top: 10px;
    border: 1px solid rgba(25, 128, 174, .24);
    border-radius: 16px;
}

.scroll-cue span {
    width: 3px;
    height: 10px;
    border-radius: 3px;
    background: rgba(36, 145, 189, .78);
    animation: scrollCue 1.8s ease-in-out infinite;
}

@keyframes scrollCue {
    0%, 100% { transform: translateY(0); opacity: .4; }
    50% { transform: translateY(18px); opacity: 1; }
}

.section {
    position: relative;
    padding: 128px 0;
    overflow: hidden;
}

.forecast-section {
    background:
        radial-gradient(circle at 92% 12%, rgba(90, 178, 232, .34), transparent 30%),
        linear-gradient(180deg, #dceffd, #c6e3f9);
}

.section-heading {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(330px, .7fr);
    align-items: end;
    gap: 70px;
    margin-bottom: 52px;
}

.section-heading h2 {
    max-width: 760px;
    margin: 15px 0 0;
    font-family: var(--serif);
    font-size: 48px;
    line-height: 1.28;
    letter-spacing: .01em;
}

.section-heading p {
    margin: 0 0 6px;
    color: var(--ink-soft);
    font-size: 15px;
    line-height: 1.95;
}

.forecast-console {
    display: grid;
    grid-template-columns: minmax(0, 1.72fr) minmax(300px, .72fr);
    gap: 18px;
}

.chart-panel,
.condition-panel,
.station-card,
.data-chart,
.platform-card {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: #ffffff;
    box-shadow: var(--shadow);
}

.chart-panel {
    padding: 30px 30px 24px;
}

.panel-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 24px;
}

.panel-head-compact {
    display: block;
}

.panel-kicker {
    display: block;
    margin-bottom: 7px;
    color: var(--blue-700);
    font-size: 10px;
    font-weight: 800;
    letter-spacing: .15em;
    text-transform: uppercase;
}

.panel-head h3,
.data-chart h3 {
    margin: 0;
    font-size: 20px;
    line-height: 1.35;
}

.chart-legend {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 16px;
    padding-top: 5px;
}

.chart-legend span {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    color: var(--ink-soft);
    font-size: 11px;
}

.chart-legend i {
    width: 18px;
    height: 3px;
    border-radius: 3px;
}

.chart-stage {
    position: relative;
    width: 100%;
}

.chart-stage-large {
    height: 350px;
    margin-top: 14px;
}

.chart-stage svg {
    width: 100%;
    height: 100%;
    overflow: visible;
    stroke-width: 0;
}

.chart-grid-line {
    stroke: rgba(24, 80, 111, .11);
    stroke-width: 1;
    stroke-dasharray: 4 7;
}

.chart-axis-label {
    fill: #5b99c5;
    font-family: var(--sans);
    font-size: 11px;
}

.chart-line {
    fill: none;
    stroke-width: 3;
    stroke-linecap: round;
    stroke-linejoin: round;
    filter: drop-shadow(0 7px 8px rgba(42, 147, 192, .12));
}

.chart-area {
    opacity: 0;
    animation: areaIn .9s .35s ease forwards;
}

@keyframes areaIn {
    to { opacity: .82; }
}

.chart-dot {
    stroke: #fff;
    stroke-width: 2;
    cursor: pointer;
    transition: transform .18s ease;
    transform-box: fill-box;
    transform-origin: center;
}

.chart-dot:hover {
    transform: scale(1.7);
}

.chart-footnote {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    margin-top: 8px;
    padding-top: 16px;
    border-top: 1px solid var(--line);
    color: #5c9ac6;
    font-size: 10px;
}

.chart-tooltip {
    position: fixed;
    z-index: 100;
    min-width: 128px;
    display: none;
    padding: 10px 12px;
    color: var(--ink);
    border: 1px solid rgba(60, 151, 190, .18);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, .96);
    box-shadow: 0 18px 42px rgba(37, 128, 168, .16);
    backdrop-filter: blur(12px);
    pointer-events: none;
    font-size: 11px;
    line-height: 1.7;
}

.chart-tooltip.is-visible {
    display: block;
}

.chart-tooltip strong {
    display: block;
    margin-bottom: 3px;
    color: var(--blue-700);
}

.condition-panel {
    padding: 30px;
    color: var(--ink);
    border-color: rgba(77, 167, 205, .17);
    background:
        radial-gradient(circle at 88% 10%, rgba(80, 180, 232, .32), transparent 32%),
        linear-gradient(155deg, #ffffff, #ddeffc);
}

.condition-panel .panel-kicker {
    color: var(--blue-700);
}

.condition-score {
    display: flex;
    align-items: baseline;
    gap: 7px;
    margin-top: 7px;
    color: #1689b7;
    font-family: var(--sans);
    font-size: 30px;
    font-weight: 700;
    letter-spacing: -.5px;
}

.condition-score small {
    color: #4c8dc0;
    font-size: 12px;
    font-weight: 400;
    letter-spacing: 0;
}

.condition-list {
    display: grid;
    gap: 22px;
    margin-top: 38px;
}

.condition-row .condition-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 9px;
    font-size: 12px;
}

.condition-label span {
    color: #4a8bbc;
}

.condition-label strong {
    color: var(--ink);
}

.chart-holder {
    position: relative;
}

.chart-season-overlay {
    position: absolute;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #1477b8;
    font-size: 18px;
    font-weight: 600;
    letter-spacing: .6px;
    pointer-events: none;
    text-shadow: 0 1px 0 rgba(255, 255, 255, .92), 0 0 14px rgba(255, 255, 255, .9);
    inset: 14px 0 0;
}

@media (max-width: 720px) {
    .chart-season-overlay {
        font-size: 15px;
        text-align: center;
        padding: 0 16px;
    }
}
.footnote-season {
    color: #1477b8;
    font-weight: 600;
}
.condition-score em {
    color: #4c8dc0;
    font-size: 12px;
    font-style: normal;
    font-weight: 400;
    letter-spacing: 0;
}

.wind-compass {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-top: 16px;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: rgba(255, 255, 255, .7);
}

.wind-compass-svg {
    flex: none;
    width: 92px;
    height: 92px;
}

.wind-compass-ring {
    fill: #f2fafe;
    stroke: rgba(30, 110, 165, .28);
    stroke-width: 1.5;
}

.wind-compass-inner {
    fill: none;
    stroke: rgba(30, 110, 165, .16);
    stroke-width: 1;
    stroke-dasharray: 3 4;
}

.wind-compass-cardinal {
    fill: #4c8dc0;
    font-size: 11px;
    text-anchor: middle;
}

.wind-compass-needle {
    transform-box: view-box;
    transform-origin: 60px 60px;
    transition: transform .9s cubic-bezier(.2, .8, .2, 1);
}

.wind-compass-arrow {
    fill: #1689b7;
}

.wind-compass-hub {
    fill: #0b5c96;
}

.wind-compass-meta {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.wind-compass-meta span {
    color: #4c8dc0;
    font-size: 11px;
}

.wind-compass-meta strong {
    color: #0f4d78;
    font-size: 18px;
}

.wind-compass-meta small {
    color: #35709f;
    font-size: 11px;
}
.condition-empty {
    margin: 0;
    padding: 14px 0;
    color: #35709f;
    font-size: 12px;
}

.condition-source {
    margin: 16px 0 0;
    color: #4c8dc0;
    font-size: 10px;
}
.condition-track {
    height: 5px;
    overflow: hidden;
    border-radius: 5px;
    background: rgba(55, 144, 183, .12);
}

.condition-track i {
    display: block;
    width: 0;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, #56c8f3, #8ce5ca);
    box-shadow: 0 0 12px rgba(86, 200, 243, .36);
    transition: width 1s cubic-bezier(.2,.8,.2,1);
}

.condition-summary {
    display: grid;
    grid-template-columns: 22px 1fr 1px 22px 1fr;
    align-items: center;
    gap: 10px;
    margin-top: 38px;
    padding-top: 24px;
    border-top: 1px solid var(--line);
}

.condition-summary > svg {
    width: 20px;
    height: 20px;
    color: var(--blue-700);
}

.condition-summary div:not(.condition-divider) {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.condition-summary strong {
    font-size: 13px;
}

.condition-summary span {
    color: #5797c3;
    font-size: 9px;
}

.condition-divider {
    width: 1px;
    height: 32px;
    background: var(--line);
}

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

.station-card {
    min-width: 0;
    padding: 24px;
    box-shadow: 0 18px 50px rgba(10, 43, 68, .08);
    transition: transform .25s ease, box-shadow .25s ease;
}

.station-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 26px 60px rgba(10, 43, 68, .13);
}

.station-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
}

.station-head > div {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
}

.station-index {
    width: 46px;
    height: 46px;
    display: grid;
    flex: 0 0 auto;
    place-items: center;
    color: var(--white);
    border-radius: var(--radius);
    background: linear-gradient(145deg, #1999cb, #10688e);
    font-family: var(--serif);
    font-size: 25px;
    box-shadow: 0 10px 22px rgba(22, 139, 184, .18);
}

.station-index-0,
.station-index-1 {
    background: linear-gradient(145deg, #86c6ea, #3f8fbe);
}

.station-index-2,
.station-index-3 {
    background: linear-gradient(145deg, #39afd3, #1d789e);
}

.station-index-4,
.station-index-5 {
    background: linear-gradient(145deg, #34c7bb, #168e9b);
}

.station-head h3 {
    margin: 0 0 4px;
    font-size: 17px;
}

.station-head p {
    display: flex;
    align-items: center;
    gap: 4px;
    min-width: 0;
    margin: 0;
    overflow: hidden;
    color: #5e97c2;
    font-size: 10px;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.station-head p svg {
    width: 12px;
    height: 12px;
    flex: 0 0 auto;
}

.station-grade {
    flex: 0 0 auto;
    padding: 5px 9px;
    color: #137c9e;
    border-radius: 999px;
    background: #d0eafb;
    font-size: 10px;
    font-weight: 800;
}

.station-meta {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin: 20px 0;
    padding: 14px 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.station-meta > div {
    display: grid;
    grid-template-columns: 16px 1fr;
    align-items: center;
    gap: 5px;
}

.station-meta svg {
    grid-row: 1 / 3;
    width: 15px;
    height: 15px;
    color: #54b4d8;
}

.station-meta span {
    color: #6f9dc2;
    font-size: 9px;
}

.station-meta strong {
    font-size: 12px;
}

.mini-forecast {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 5px;
    min-height: 112px;
}

.mini-day {
    min-width: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 7px;
}

.mini-day > span,
.mini-day small {
    color: #6f9dc2;
    font-size: 8px;
    white-space: nowrap;
}

.mini-day strong {
    font-size: 11px;
}

.mini-bar {
    position: relative;
    width: 7px;
    height: 52px;
    overflow: hidden;
    border-radius: 6px;
    background: #dbe9f4;
}

.mini-bar i {
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    border-radius: 6px;
    background: linear-gradient(180deg, #5ecdf3, #1b8dbd);
    transform-origin: bottom;
    animation: barGrow .8s ease both;
}

@keyframes barGrow {
    from { transform: scaleY(0); }
}

.station-best {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-top: 18px;
    padding: 12px 14px;
    border-radius: var(--radius);
    background: #e2f0fb;
    font-size: 10px;
}

.station-best span {
    color: #5a7b95;
}

.station-best strong {
    color: #0b5f92;
}

.data-section {
    color: var(--ink);
    background:
        linear-gradient(rgba(38, 126, 180, .09) 1px, transparent 1px),
        linear-gradient(90deg, rgba(38, 126, 180, .09) 1px, transparent 1px),
        radial-gradient(circle at 78% 12%, rgba(74, 174, 228, .34), transparent 32%),
        linear-gradient(145deg, #e5f3fe, #cfe7f9 54%, #e0f0fd);
    background-size: 64px 64px, 64px 64px, auto, auto;
}

.data-mist {
    position: absolute;
    top: 0;
    right: -10%;
    width: 55%;
    height: 55%;
    opacity: .42;
    background: radial-gradient(ellipse at center, rgba(110, 195, 240, .42), transparent 65%);
    filter: blur(10px);
}

.section-heading-light h2 {
    color: var(--ink);
}

.section-heading-light p {
    color: var(--ink-soft);
}

.data-metrics {
    position: relative;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255,255,255,.95);
    box-shadow: 0 22px 54px rgba(17, 84, 132, .14);
    backdrop-filter: blur(12px);
}

.data-metric {
    min-width: 0;
    padding: 25px 28px;
    border-right: 1px solid var(--line);
}

.data-metric:last-child {
    border-right: 0;
}

.data-metric > span {
    color: #5793c1;
    font-size: 10px;
    letter-spacing: .1em;
}

.data-metric strong {
    display: flex;
    align-items: baseline;
    gap: 6px;
    margin: 14px 0 8px;
    color: var(--ink);
    font-family: var(--serif);
    font-size: 36px;
    line-height: 1;
}

.data-metric strong small {
    font-family: var(--sans);
    font-size: 11px;
    font-weight: 500;
    color: var(--blue-700);
}

.data-metric p {
    margin: 0;
    color: #3d7cae;
    font-size: 10px;
    line-height: 1.6;
}

.data-metric-accent {
    background: linear-gradient(135deg, rgba(103, 207, 239, .2), rgba(119, 221, 195, .1));
}

.data-metric-accent strong {
    font-size: 29px;
}

.data-chart-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.65fr) minmax(320px, .75fr);
    grid-template-rows: auto auto;
    gap: 18px;
    margin-top: 18px;
}

.data-chart {
    min-width: 0;
    padding: 28px;
    color: var(--ink);
    border-color: var(--line);
    background: #ffffff;
    box-shadow: 0 20px 52px rgba(17, 84, 132, .14);
    backdrop-filter: blur(14px);
}

.data-chart-wide {
    grid-row: span 2;
}

.data-chart .panel-kicker {
    color: var(--blue-700);
}

.data-chart h3 {
    margin-top: 3px;
}

.data-live {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #35709f;
    font-size: 10px;
}

.chart-stage-dark {
    height: 390px;
    margin-top: 24px;
}

.chart-stage-small {
    height: 190px;
    margin-top: 20px;
}

.data-empty-state {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 120px;
    padding: 18px;
    border: 1px dashed rgba(30, 110, 165, .28);
    border-radius: 16px;
    background: rgba(255, 255, 255, .55);
    color: #35709f;
    font-size: 12px;
    text-align: center;
}

.chart-stage.data-empty-state {
    height: auto;
    min-height: 190px;
}

.station-grid .data-empty-state {
    grid-column: 1 / -1;
}
.footnote-legend {
    display: inline-flex;
    align-items: center;
}

.footnote-legend i {
    display: inline-block;
    width: 8px;
    height: 8px;
    margin-right: 6px;
    border-radius: 50%;
}

.chart-axis-label-temp {
    fill: #b8822b;
    font-weight: 600;
}
.chart-stage-large.chart-season-note {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 350px;
    min-height: 350px;
    border: 1px dashed rgba(30, 110, 165, .28);
    border-radius: 16px;
    background: rgba(255, 255, 255, .55);
    color: #35709f;
    font-size: 15px;
    letter-spacing: .5px;
}
.panel-head-side {
    display: flex;
    align-items: center;
    gap: 16px;
}

.chart-legend-static {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 11px;
    color: #35709f;
}

.chart-legend-static i {
    display: inline-block;
    width: 9px;
    height: 9px;
    margin-right: 6px;
    border-radius: 50%;
}
.chart-stage-dark .chart-grid-line {
    stroke: rgba(30, 110, 165, .16);
}

.chart-stage-dark .chart-axis-label {
    fill: #3d7cae;
}

.quality-peak {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--line);
    font-size: 10px;
}

.quality-peak span {
    color: #3d7cae;
}

.quality-peak strong {
    color: #1c9b91;
}

.data-explainer {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.data-explainer p {
    margin: 18px 0 22px;
    color: #456b86;
    font-size: 12px;
    line-height: 1.9;
}

.explainer-flow {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--blue-700);
    font-size: 9px;
    white-space: nowrap;
}

.explainer-flow i {
    width: 14px;
    height: 1px;
    background: rgba(18, 102, 156, .45);
}

.data-source {
    margin: 26px 0 0;
    color: #5d8098;
    font-size: 10px;
}

.science-section {
    background:
        radial-gradient(circle at 82% 18%, rgba(74, 174, 228, .34), transparent 30%),
        #d7ebfb;
}

.science-layout {
    display: grid;
    grid-template-columns: minmax(0, .88fr) minmax(0, 1.12fr);
    gap: 22px;
}

.science-visual {
    position: relative;
    min-height: 620px;
    overflow: hidden;
    border-radius: var(--radius);
    background: linear-gradient(145deg, #e4f3fe, #c7e5fa);
    box-shadow: var(--shadow);
}

.science-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: 58% center;
    filter: saturate(.9) brightness(1.1) contrast(.95);
}

.science-visual-overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(180deg, rgba(226, 242, 254, .05), rgba(206, 232, 252, .3) 43%, rgba(232, 245, 254, .92) 88%),
        linear-gradient(90deg, rgba(247, 252, 255, .22), transparent 60%);
}

.crystal-diagram {
    position: absolute;
    top: 54px;
    left: 50%;
    width: 180px;
    height: 180px;
    transform: translateX(-50%);
}

.crystal-diagram span {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 1px;
    height: 78px;
    background: linear-gradient(transparent, rgba(41, 158, 201, .82), transparent);
    transform-origin: center top;
    animation: crystalGlow 3s ease-in-out infinite;
}

.crystal-diagram span:nth-child(1) { transform: translate(-50%, -50%) rotate(0deg); }
.crystal-diagram span:nth-child(2) { transform: translate(-50%, -50%) rotate(60deg); }
.crystal-diagram span:nth-child(3) { transform: translate(-50%, -50%) rotate(120deg); }
.crystal-diagram span:nth-child(4) { transform: translate(-50%, -50%) rotate(180deg); }
.crystal-diagram span:nth-child(5) { transform: translate(-50%, -50%) rotate(240deg); }
.crystal-diagram span:nth-child(6) { transform: translate(-50%, -50%) rotate(300deg); }

@keyframes crystalGlow {
    0%, 100% { opacity: .42; }
    50% { opacity: 1; }
}

.science-caption {
    position: absolute;
    right: 38px;
    bottom: 38px;
    left: 38px;
    color: var(--ink);
}

.science-caption > span {
    color: var(--blue-700);
    font-size: 9px;
    letter-spacing: .2em;
}

.science-caption strong {
    display: block;
    margin: 10px 0 12px;
    font-family: var(--serif);
    font-size: 34px;
}

.science-caption p {
    max-width: 380px;
    margin: 0;
    color: #446a86;
    font-size: 12px;
    line-height: 1.8;
}

.science-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
}

.science-item {
    min-height: 300px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 28px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: #ffffff;
    box-shadow: 0 18px 45px rgba(17, 84, 132, .12);
    transition: transform .25s ease, border-color .25s ease;
}

.science-item:hover {
    border-color: rgba(37, 145, 190, .32);
    transform: translateY(-4px);
}

.science-number {
    color: #2688c2;
    font-family: var(--serif);
    font-size: 26px;
}

.science-item h3 {
    margin: 0 0 12px;
    font-size: 18px;
}

.science-item p {
    margin: 0;
    color: var(--ink-soft);
    font-size: 12px;
    line-height: 1.9;
}

.science-item {
    cursor: pointer;
}

.science-thumb {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 480 / 300;
    margin: 14px 0 16px;
    border-radius: 12px;
    object-fit: contain;
    background: #eaf7ff;
}

.science-body {
    display: flex;
    flex: 1;
    flex-direction: column;
}

.science-body p {
    display: -webkit-box;
    overflow: hidden;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
}

.science-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: auto;
    padding-top: 14px;
    color: #1477b8;
    font-size: 11px;
    font-weight: 600;
}

.science-more svg {
    width: 14px;
    height: 14px;
}

.science-item:focus-visible {
    outline: 2px solid #1477b8;
    outline-offset: 3px;
}

.science-modal {
    position: fixed;
    z-index: 70;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    inset: 0;
}

.science-modal[hidden] {
    display: none;
}

.science-modal-backdrop {
    position: absolute;
    background: rgba(10, 43, 66, .42);
    opacity: 0;
    transition: opacity .3s ease;
    inset: 0;
    backdrop-filter: blur(3px);
}

.science-modal-card {
    position: relative;
    width: min(760px, 100%);
    max-height: 86vh;
    overflow: auto;
    border-radius: 18px;
    background: #ffffff;
    box-shadow: 0 30px 80px rgba(12, 60, 96, .32);
    transform: translateY(20px) scale(.96);
    opacity: 0;
    transition: transform .32s cubic-bezier(.2, .8, .2, 1), opacity .3s ease;
}

.science-modal.is-open .science-modal-backdrop {
    opacity: 1;
}

.science-modal.is-open .science-modal-card {
    transform: none;
    opacity: 1;
}

.science-modal-image {
    display: block;
    width: 100%;
    height: auto;
    max-height: 52vh;
    aspect-ratio: 480 / 300;
    object-fit: contain;
    background: #eaf7ff;
}

.science-modal-body {
    padding: 26px 30px 32px;
}

.science-modal-title {
    margin: 0 0 14px;
    color: #0a2b42;
    font-size: 22px;
}

.science-modal-text {
    margin: 0;
    color: #2d6693;
    font-size: 14px;
    line-height: 2.1;
}

.science-modal-close {
    position: absolute;
    z-index: 2;
    top: 14px;
    right: 14px;
    display: grid;
    width: 38px;
    height: 38px;
    place-items: center;
    border: 1px solid rgba(255, 255, 255, .8);
    border-radius: 50%;
    background: rgba(255, 255, 255, .94);
    color: #0f4d78;
    cursor: pointer;
    transition: transform .2s ease, background .2s ease;
}

.science-modal-close:hover {
    transform: rotate(90deg);
    background: #ffffff;
}

.science-modal-close svg {
    width: 16px;
    height: 16px;
}

body.modal-open {
    overflow: hidden;
}

@media (max-width: 720px) {
    .science-modal {
        padding: 14px;
    }



    .science-modal-body {
        padding: 20px 20px 24px;
    }
}
.download-section {
    background:
        radial-gradient(circle at 50% 0, rgba(255, 255, 255, .5), transparent 38%),
        #c9e3f8;
}

.download-glow {
    position: absolute;
    top: -180px;
    left: 50%;
    width: 800px;
    height: 400px;
    border-radius: 50%;
    background: rgba(255, 255, 255, .3);
    filter: blur(50px);
    transform: translateX(-50%);
}

.section-heading-centered {
    grid-template-columns: 1fr;
    justify-items: center;
    gap: 18px;
    text-align: center;
}

.section-heading-centered p {
    max-width: 620px;
}

.platform-grid {
    position: relative;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.platform-card {
    min-height: 278px;
    display: grid;
    grid-template-columns: 1fr 150px;
    align-items: center;
    gap: 22px;
    padding: 30px;
    background: #ffffff;
}

.platform-copy > span {
    color: #0c679f;
    font-size: 10px;
    font-weight: 800;
    letter-spacing: .12em;
    text-transform: uppercase;
}

.platform-copy h3 {
    margin: 14px 0 12px;
    font-family: var(--serif);
    font-size: 27px;
}

.platform-copy p {
    margin: 0 0 20px;
    color: var(--ink-soft);
    font-size: 11px;
    line-height: 1.8;
}

.platform-copy a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--blue-700);
    font-size: 11px;
    font-weight: 800;
}

.platform-copy a svg {
    width: 14px;
    height: 14px;
}

.platform-pending {
    color: #4c8dc0 !important;
    font-size: 10px !important;
}

.qr-area {
    width: 150px;
    height: 150px;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--white);
}

.qr-area img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.qr-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    color: #4c8dc0;
    background:
        linear-gradient(45deg, rgba(32, 118, 157, .05) 25%, transparent 25%, transparent 75%, rgba(32, 118, 157, .05) 75%),
        linear-gradient(45deg, rgba(32, 118, 157, .05) 25%, transparent 25%, transparent 75%, rgba(32, 118, 157, .05) 75%);
    background-position: 0 0, 8px 8px;
    background-size: 16px 16px;
}

.qr-placeholder svg {
    width: 38px;
    height: 38px;
    color: #3f93c9;
}

.qr-placeholder span {
    font-size: 11px;
    font-weight: 800;
}

.qr-placeholder small {
    font-size: 8px;
}

.site-footer {
    color: #39648a;
    border-top: 1px solid rgba(60, 151, 190, .12);
    background: linear-gradient(180deg, #d5e9fa, #b7d6f0);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr .7fr 1fr;
    gap: 80px;
    padding-top: 70px;
    padding-bottom: 54px;
}

.brand-footer {
    color: var(--ink);
}

.footer-brand p {
    max-width: 420px;
    margin: 22px 0 0;
    font-size: 12px;
    line-height: 1.9;
}

.footer-links,
.footer-contact {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    font-size: 11px;
}

.footer-links strong,
.footer-contact strong {
    margin-bottom: 8px;
    color: var(--ink);
    font-size: 13px;
}

.footer-links a {
    color: #3d688c;
    transition: color .2s ease;
}

.footer-links a:hover {
    color: var(--blue-700);
}

.footer-contact span {
    color: #4c7392;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    gap: 30px;
    padding-top: 20px;
    padding-bottom: 24px;
    border-top: 1px solid rgba(54, 143, 181, .14);
    color: #547a97;
    font-size: 9px;
}

.js [data-reveal] {
    opacity: 0;
    transform: translateY(26px);
    transition: opacity .7s ease, transform .7s ease;
}

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

@media (max-width: 1180px) {
    .main-nav {
        gap: 18px;
    }

    .header-status {
        display: none;
    }

    .hero-inner {
        gap: 30px;
    }

    .hero h1 {
        font-size: 64px;
    }

    .platform-card {
        grid-template-columns: 1fr 120px;
        padding: 24px;
    }

    .qr-area {
        width: 120px;
        height: 120px;
    }
}

@media (max-width: 960px) {
    .site-container {
        width: min(calc(100% - 36px), var(--container));
    }

    .header-inner {
        min-height: 70px;
    }

    .site-header.is-scrolled {
        backdrop-filter: none;
    }

    .site-header::before {
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
    }

    .menu-toggle {
        display: grid;
        place-items: center;
    }

    .main-nav {
        position: fixed;
        z-index: 90;
        top: 70px;
        right: 0;
        bottom: auto;
        left: 0;
        height: calc(100vh - 70px);
        height: calc(100dvh - 70px);
        overflow-y: auto;
        display: flex;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 30px 24px;
        color: var(--ink);
        background: rgba(233, 245, 255, .98);
        backdrop-filter: blur(20px);
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transform: translateY(-12px);
        transition: opacity .3s ease, transform .35s ease, visibility .35s ease;
    }

    .main-nav.is-open {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: translateY(0);
    }

    .main-nav a {
        padding: 20px 0;
        border-bottom: 1px solid var(--line);
        font-family: var(--serif);
        font-size: 22px;
        opacity: 1;
    }

    .main-nav a::after {
        display: none;
    }

    .menu-open-icon {
        display: block;
    }

    .menu-close-icon {
        display: none;
    }

    body.menu-open .menu-open-icon {
        display: none;
    }

    body.menu-open .menu-close-icon {
        display: block;
    }

    body.menu-open .site-header,
    body.menu-open .site-header.is-scrolled {
        color: var(--ink);
    }

    body.menu-open .site-header::before,
    body.menu-open .site-header.is-scrolled::before {
        background: rgba(233, 245, 255, .98);
    }

    body.menu-open .brand-mark {
        color: var(--white);
        border-color: transparent;
        background: linear-gradient(135deg, #1b78a9, #0d9bcf);
    }

    .header-cta {
        display: none;
    }

    .hero {
        min-height: 940px;
        align-items: flex-start;
    }

    .snow-canvas {
        height: 940px;
    }

    .hero-inner {
        position: static;
        grid-template-columns: 1fr;
        padding-top: 130px;
        text-align: left;
    }

    .hero-copy {
        position: relative;
        z-index: 8;
        max-width: 680px;
    }

    .hero h1 {
        font-size: 58px;
    }

    .hero-observation {
        position: absolute;
        right: 8px;
        bottom: 96px;
        width: 260px;
    }

    .observation-orbit {
        width: 220px;
        height: 220px;
    }

    .orbit-core {
        inset: 30px;
    }

    .orbit-core strong {
        font-size: 64px;
    }

    .hero-stat-rail {
        grid-template-columns: repeat(3, 1fr);
    }

    .hero-stat-wide {
        display: none;
    }

    .scroll-cue {
        display: none;
    }

    .section {
        padding: 96px 0;
    }

    .section-heading {
        grid-template-columns: 1fr;
        gap: 22px;
        margin-bottom: 40px;
    }

    .section-heading h2 {
        font-size: 40px;
    }

    .forecast-console,
    .data-chart-grid,
    .science-layout {
        grid-template-columns: 1fr;
    }

    .data-chart-wide {
        grid-row: auto;
    }

    .station-grid {
        grid-template-columns: 1fr;
    }

    .data-metrics {
        grid-template-columns: repeat(2, 1fr);
    }

    .data-metric:nth-child(2) {
        border-right: 0;
    }

    .data-metric:nth-child(-n+2) {
        border-bottom: 1px solid var(--line);
    }

    .science-visual {
        min-height: 520px;
    }

    .platform-grid {
        grid-template-columns: 1fr;
    }

    .platform-card {
        grid-template-columns: 1fr 160px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 50px;
    }

    .footer-brand {
        grid-column: 1 / -1;
    }
}

@media (max-width: 640px) {
    .site-container {
        width: min(calc(100% - 28px), var(--container));
    }

    .brand-copy strong {
        font-size: 14px;
    }

    .brand-copy small {
        font-size: 8px;
    }

    .hero {
        min-height: 900px;
    }

    .snow-canvas {
        height: 900px;
    }

    .hero-inner {
        padding-top: 116px;
    }

    .hero h1 {
        margin-top: 18px;
        font-size: 42px;
    }

    .hero-copy > p {
        font-size: 14px;
        line-height: 1.8;
    }

    .hero-actions {
        align-items: stretch;
        flex-direction: column;
        width: 100%;
        max-width: 300px;
        margin-top: 28px;
    }

    .hero-observation {
        right: 50%;
        bottom: 108px;
        transform: translateX(50%);
    }

    .observation-orbit {
        width: 210px;
        height: 210px;
    }

    .observation-caption {
        padding: 0;
    }

    .hero-stat-rail {
        min-height: 92px;
    }

    .hero-stat {
        padding: 16px 12px;
    }

    .hero-stat strong {
        font-size: 21px;
    }

    .hero-stat > span {
        font-size: 9px;
    }

    .section {
        padding: 76px 0;
    }

    .section-heading h2 {
        font-size: 34px;
    }

    .section-heading p {
        font-size: 13px;
    }

    .chart-panel,
    .condition-panel,
    .station-card,
    .data-chart,
    .platform-card {
        padding: 22px;
    }

    .panel-head {
        display: block;
    }

    .chart-legend {
        justify-content: flex-start;
        margin-top: 14px;
    }

    .chart-stage-large {
        height: 280px;
    }

    .chart-stage-dark {
        height: 280px;
    }

    .chart-footnote {
        flex-direction: column;
        gap: 5px;
    }

    .station-head {
        align-items: center;
    }

    .station-meta {
        gap: 5px;
    }

    .mini-bar {
        height: 46px;
    }

    .data-metrics {
        grid-template-columns: 1fr;
    }

    .data-metric,
    .data-metric:nth-child(2) {
        border-right: 0;
        border-bottom: 1px solid var(--line);
    }

    .data-metric:last-child {
        border-bottom: 0;
    }

    .science-visual {
        min-height: 470px;
    }

    .science-list {
        grid-template-columns: 1fr;
    }

    .science-item {
        min-height: 230px;
    }

    .platform-card {
        grid-template-columns: 1fr;
    }

    .qr-area {
        width: 146px;
        height: 146px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 38px;
        padding-top: 54px;
    }

    .footer-brand {
        grid-column: auto;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 8px;
    }
}

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

    *,
    *::before,
    *::after {
        animation-duration: .001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .001ms !important;
    }
}

/* ===== 首页底部滚动文字（雾凇播报） ===== */
.rime-ticker {
    position: relative;
    background: linear-gradient(115deg, rgba(219, 240, 255, .95), rgba(235, 248, 255, .82) 46%, rgba(226, 246, 246, .94));
    border-top: 1px solid rgba(126, 191, 232, .42);
    border-bottom: 1px solid rgba(126, 191, 232, .42);
}

.rime-ticker-inner {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding-top: .7rem;
    padding-bottom: .7rem;
}

.rime-ticker-tag {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    flex: none;
    padding: .3rem .75rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, .9);
    color: #0f6f95;
    font-size: .8rem;
    font-weight: 700;
    letter-spacing: .06em;
    box-shadow: 0 2px 10px rgba(56, 134, 178, .16);
}

.rime-ticker-tag svg {
    width: 1rem;
    height: 1rem;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.7;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.rime-ticker-viewport {
    flex: 1 1 auto;
    min-width: 0;
    overflow: hidden;
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 4%, #000 96%, transparent);
    mask-image: linear-gradient(90deg, transparent, #000 4%, #000 96%, transparent);
}

.rime-ticker-track {
    display: flex;
    width: max-content;
    animation: rime-ticker-scroll var(--ticker-duration, 24s) linear infinite;
}

.rime-ticker-viewport:hover .rime-ticker-track {
    animation-play-state: paused;
}

.rime-ticker-item {
    flex: none;
    padding-right: 4rem;
    color: var(--ticker-color, #0b6d8c);
    font-size: var(--ticker-size, 19px);
    font-weight: 600;
    line-height: 1.7;
    white-space: nowrap;
}

@keyframes rime-ticker-scroll {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

.rime-ticker-inner-notice {
    padding-top: .55rem;
    padding-bottom: .75rem;
    border-top: 1px dashed rgba(126, 191, 232, .5);
}

.rime-ticker-tag-notice {
    color: #14829f;
    background: rgba(255, 255, 255, .74);
}

@media (max-width: 720px) {
    .rime-ticker-inner { gap: .6rem; }
    .rime-ticker-tag { font-size: .72rem; padding: .25rem .6rem; }
    .rime-ticker-item { padding-right: 2.5rem; }
}

@media (prefers-reduced-motion: reduce) {
    .rime-ticker-track { animation: none; }
    .rime-ticker-item { max-width: 100%; overflow: hidden; text-overflow: ellipsis; }
    .rime-ticker-item[aria-hidden="true"] { display: none; }
}

/* ===== 20260911w 预报卡片 4-7 天遮罩 + PC 底栏 ===== */
.station-card { position: relative; }
.mini-forecast { position: relative; }
.mini-day:nth-child(n+2) { filter: blur(6px); opacity: .3; pointer-events: none; }
.forecast-lock {
    position: absolute; top: 0; right: 0; width: 85.6%; height: 100%; z-index: 2;
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 5px;
    background: linear-gradient(90deg, rgba(238,249,255,0) 0%, rgba(238,249,255,.72) 14%, rgba(238,249,255,.94) 34%);
    border-left: 1px solid rgba(91,192,235,.28);
    border-radius: 0 14px 14px 0;
    backdrop-filter: blur(2px);
}
.forecast-lock img { width: 52px; height: 52px; padding: 3px; border-radius: 9px; background: #fff; box-shadow: 0 4px 12px rgba(27,141,189,.28); }
.forecast-lock svg { width: 30px; height: 30px; fill: #2f82b5; }
.forecast-lock strong { font-size: 13px; color: #0d5c8c; }
.forecast-lock span { font-size: 10px; color: #2f82b5; white-space: nowrap; }

.pc-app-bar {
    display: none; position: fixed; left: 0; right: 0; bottom: 0; z-index: 1000;
    padding: 10px 0; background: rgba(255,255,255,.94); backdrop-filter: blur(12px);
    border-top: 1px solid rgba(91,192,235,.35);
    box-shadow: 0 -8px 28px rgba(27,141,189,.16);
}
.pc-app-bar-inner { display: flex; align-items: center; justify-content: center; gap: 14px; }
.pc-app-bar-inner > img { width: 46px; height: 46px; padding: 2px; border-radius: 8px; background: #fff; box-shadow: 0 2px 8px rgba(27,141,189,.22); }
.pc-app-bar-copy { display: flex; flex-direction: column; line-height: 1.45; }
.pc-app-bar-copy strong { font-size: 14px; color: #0d5c8c; }
.pc-app-bar-copy span { font-size: 12px; color: #2f82b5; }
.pc-app-bar-actions { display: flex; gap: 10px; margin-left: 8px; }
.pc-app-btn { padding: 8px 18px; border-radius: 999px; font-size: 13px; text-decoration: none; border: 1px solid #5ecdf3; color: #0d5c8c; background: #fff; transition: all .2s ease; }
.pc-app-btn:hover { border-color: #1b8dbd; background: #eaf7ff; }
.pc-app-btn-primary { background: linear-gradient(135deg, #5ecdf3, #1b8dbd); color: #fff; border-color: transparent; }
.pc-app-btn-primary:hover { background: linear-gradient(135deg, #4cc0ea, #1779a3); filter: brightness(1.05); }
body.has-app-bar { padding-bottom: 74px; }

/* ===== 20260911x 收窄卡片遮罩 + 图表小程序码 ===== */
.forecast-lock {
    position: absolute; top: 0; right: 0; width: 85.6%; height: 100%; z-index: 2;
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px;
    background: linear-gradient(90deg, rgba(238,249,255,0) 0%, rgba(238,249,255,.68) 16%, rgba(238,249,255,.94) 36%);
    border-left: 1px solid rgba(91,192,235,.28);
    border-radius: 0 0 14px 0;
    backdrop-filter: blur(2px);
}
.forecast-lock img { width: 34px; height: 34px; padding: 2px; border-radius: 6px; background: #fff; box-shadow: 0 2px 8px rgba(27,141,189,.26); }
.forecast-lock svg { width: 22px; height: 22px; fill: #2f82b5; }
.forecast-lock strong { font-size: 10px; color: #0d5c8c; }
.forecast-lock span { font-size: 9px; color: #2f82b5; white-space: nowrap; }

.chart-qr {
    position: absolute; right: 16px; bottom: 14px; z-index: 3;
    display: flex; flex-direction: column; align-items: center; gap: 4px;
    padding: 7px 9px; background: rgba(255,255,255,.9); border: 1px solid rgba(91,192,235,.4);
    border-radius: 12px; backdrop-filter: blur(4px);
    box-shadow: 0 4px 14px rgba(27,141,189,.18);
}
.chart-qr img { width: 40px; height: 40px; border-radius: 6px; display: block; background: #fff; }
.chart-qr span { font-size: 9px; color: #1477b8; white-space: nowrap; }

/* ===== 20260911y 卡片保留日期 + 顶部趋势图遮挡 ===== */
.mini-day:nth-child(n+2) {
    filter: none;
    opacity: 1;
}
.mini-day:nth-child(n+2) .mini-bar,
.mini-day:nth-child(n+4) strong {
    filter: blur(5px);
    opacity: .35;
}
.forecast-lock {
    top: 0;
    right: 0;
    width: 85.6%;
    bottom: 20px;
    height: auto;
}
.chart-lock {
    position: absolute;
    top: 14px;
    right: 0;
    bottom: 14px;
    width: 85.6%;
    z-index: 4;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    background: linear-gradient(90deg, rgba(238,249,255,0) 0%, rgba(238,249,255,.7) 18%, rgba(238,249,255,.94) 40%);
    border-left: 1px solid rgba(91,192,235,.28);
    border-radius: 0 0 14px 0;
    backdrop-filter: blur(2px);
    pointer-events: none;
}
.chart-lock img { width: 46px; height: 46px; padding: 3px; border-radius: 8px; background: #fff; box-shadow: 0 4px 12px rgba(27,141,189,.28); }
.chart-lock strong { font-size: 13px; color: #0d5c8c; }
.chart-lock span { font-size: 10px; color: #2f82b5; white-space: nowrap; }