@font-face {
  font-family: 'Sbzt';
  src: url('../assets/font/sbzt.ttf') format('truetype');
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

#app {
  font-family: 'Sbzt', 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
  height: 100vh;
  height: 100dvh;
  min-height: 100vh;
  min-height: 100dvh;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow-x: hidden;
}

.app-layout {
  height: 100%;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
}

.app-header-bar {
  text-align: left;
  padding: env(safe-area-inset-top, 0px) env(safe-area-inset-right, 0px) 0
    env(safe-area-inset-left, 0px) !important;
  flex-shrink: 0;
  --ux: 1vw;
  --app-header-logo-w: calc(var(--ux) * 10);
  --app-header-logo-h: calc(var(--app-header-logo-w) * 53 / 207);
  --app-header-min-bar: clamp(52px, calc(var(--ux) * 10), 72px);
  --app-header-content-h: max(var(--app-header-min-bar), var(--app-header-logo-h));
  --app-header-safe-top: env(safe-area-inset-top, 0px);
  --app-header-text-fs: clamp(16px, calc(var(--ux) * 4.1), 26px);
  height: calc(var(--app-header-content-h) + var(--app-header-safe-top)) !important;
  box-sizing: border-box;
  position: relative;
  z-index: 20;
  background-color: #fff;
  overflow: visible;
}

@supports (width: 1svw) {
  .app-header-bar {
    --ux: 1svw;
  }
}

.app-header-inner {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  height: 100%;
  min-width: 0;
  padding: 0 clamp(10px, calc(var(--ux) * 2.8), 24px);
  box-sizing: border-box;
  gap: clamp(8px, calc(var(--ux) * 1.4), 16px);
  overflow: visible;
}

.app-header-logo {
  width: var(--app-header-logo-w);
  height: auto;
  aspect-ratio: 207 / 53;
  max-width: none;
  object-fit: contain;
  object-position: left center;
  display: block;
  flex: 0 0 auto;
  flex-shrink: 0;
  align-self: center;
}

.app-header-right {
  box-sizing: border-box;
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: flex-end;
  gap: clamp(10px, calc(var(--ux) * 1.2), 18px);
  flex: 1 1 auto;
  width: auto;
  max-width: none;
  min-width: 0;
  margin-left: auto;
  overflow: visible;
  font-size: var(--app-header-text-fs);
  line-height: 1.25;
  font-weight: 500;
  font-family: 'Sbzt', 'Microsoft YaHei', 'PingFang SC', sans-serif;
}

.app-header-phone,
.app-header-menu__item {
  font: inherit;
  white-space: nowrap;
}

.app-header-phone {
  flex: 0 0 auto;
  color: #5a6b5d;
}

.app-header-menu {
  flex: 0 1 auto;
  min-width: 0;
  width: auto !important;
  max-width: 100%;
  border-bottom: none !important;
  display: flex !important;
  flex-direction: row !important;
  flex-wrap: nowrap !important;
  align-items: center !important;
  justify-content: flex-start !important;
  gap: clamp(8px, calc(var(--ux) * 1.2), 18px);
  overflow-x: auto;
  overflow-y: visible;
  scrollbar-width: thin;
  list-style: none;
  margin: 0;
  padding: 0;
  font: inherit;
}

.app-header-menu__item {
  border-bottom: 2px solid transparent;
  float: none !important;
  flex: 0 0 auto;
  height: auto !important;
  min-height: 0;
  display: inline-flex !important;
  align-items: center !important;
  padding: 0 clamp(8px, calc(var(--ux) * 1.2), 20px) !important;
  overflow: visible;
  text-decoration: none;
  color: #5a6b5d;
  cursor: pointer;
  box-sizing: border-box;
  font: inherit !important;
}

.app-header-menu__item span {
  font-size: inherit !important;
  line-height: inherit !important;
}

.app-header-menu__item.is-active {
  color: #409eff;
  border-bottom-color: #409eff;
}

@media (max-width: 768px) {
  .app-header-bar {
    --app-header-text-fs: clamp(16px, calc(var(--ux) * 3.5), 24px);
  }

  .app-header-menu {
    gap: clamp(5px, calc(var(--ux) * 1), 12px);
  }

  .app-header-menu__item {
    padding: 0 clamp(6px, calc(var(--ux) * 1), 14px) !important;
  }
}

.app-main--landing {
  flex: 1;
  min-height: 0;
  min-width: 0;
  width: 100%;
  max-width: 100%;
  padding: 0 !important;
  overflow: hidden;
  box-sizing: border-box;
}


* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
.star-landing-root {
            font-family: 'Sbzt', 'Microsoft YaHei', 'PingFang SC', sans-serif;
            width: 100%;
            max-width: 100%;
            min-width: 0;
            overflow-x: hidden;
            /* 动态视口：横竖屏、移动端地址栏收起/展开时更稳 */
            --vh: 100vh;
            --vh-static: 100vh;
            /* 通栏：间距/字号按视口宽度比例（--ux≈1% 屏宽），块高用 aspect-ratio 跟宽度走 */
            --ux: 1vw;
            --section-pad-x: clamp(12px, calc(var(--ux) * 4), 72px);
            --section-pad-y: clamp(20px, calc(var(--ux) * 5.5), 96px);
            --section-pad-y-lg: clamp(28px, calc(var(--ux) * 7), 112px);
            --section-pad-bottom: clamp(10px, calc(var(--ux) * 2), 28px);
            --gap-cards: clamp(6px, calc(var(--ux) * 1.6), 26px);
            --radius-lg: clamp(12px, calc(var(--ux) * 2.2), 34px);
            --text-display: clamp(22px, calc(var(--ux) * 5), 48px);
            --text-display-track: clamp(2px, calc(var(--ux) * 0.35), 10px);
            --text-subtitle: clamp(20px, calc(var(--ux) * 4.8), 28px);
            --text-tag: clamp(11px, calc(var(--ux) * 2.4), 15px);
            --text-body: clamp(12px, calc(var(--ux) * 2.8), 16px);
            --text-small: clamp(10px, calc(var(--ux) * 2.4), 14px);
            --text-product-title: clamp(44px, calc(var(--ux) * 8.4), 84px);
            --block-head-gap: clamp(20px, calc(var(--ux) * 5), 64px);
            --gallery-gap-fluid: clamp(6px, calc(var(--ux) * 1.5), 18px);
            --text-lead: clamp(13px, calc(var(--ux) * 3.6), 22px);
        }

        @supports (height: 100dvh) {
            .star-landing-root {
                --vh: 100dvh;
            }
        }

        @supports (height: 100svh) {
            .star-landing-root {
                --vh-static: 100svh;
            }
        }

        @supports (width: 1svw) {
            .star-landing-root {
                --ux: 1svw;
            }
        }

        .star-landing-root--shell {
            height: 100%;
            min-height: 0;
            display: flex;
            flex-direction: column;
        }

        .landing-scroll-container {
            flex: 1;
            min-height: 0;
            min-width: 0;
            width: 100%;
            max-width: 100%;
            margin: 0;
            padding: 0;
            overflow-y: auto;
            overflow-x: hidden;
            scroll-behavior: smooth;
            /* 不显示滚动条，仍可滚动（触摸板 / 滚轮 / 触摸滑动） */
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .landing-scroll-container::-webkit-scrollbar {
            display: none;
            width: 0;
            height: 0;
        }

        .landing-anchor-section {
            scroll-margin-top: 8px;
        }

        #story {
            scroll-margin-top: 8px;
        }

        /* ========== 第一屏 ========== */
        .screen1 {
            width: 100%;
            max-width: 100%;
            /* 设计比例 1920×1192，高度缩小五分之一 */
            aspect-ratio: 1920 / calc(1192 * 4 / 5);
            height: auto;
            margin-top: 0;
            position: relative;
            overflow: hidden;
            background-color: #5fb3c4;
        }

        .screen1.screen1--in-shell {
            margin-top: 0;
            aspect-ratio: 1920 / calc(1192 * 4 / 5);
            height: auto;
        }

        .screen2.screen2--in-shell {
            width: 100%;
            margin-top: 0;
        }

        .screen2.screen2--in-shell .screen-section-body {
            padding-bottom: 12px;
        }

        /* 背景图：铺满 screen1 比例框 */
        .bg-wrapper {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            display: block;
            overflow: hidden;
        }

        .bg-image {
            width: 100%;
            height: 100%;
            display: block;
            object-fit: cover;
            object-position: center center;
        }

        /* 右侧内容区 */
        .content {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            display: flex;
            flex-direction: column;
            align-items: flex-end;
            justify-content: center;
            padding-right: clamp(5%, calc(var(--ux) * 10), 16%);
            z-index: 10;
            pointer-events: none;
        }

        .content > * {
            pointer-events: auto;
        }

        /* 外层限定宽度；内文横向铺满、自动换行、高度随内容；字号随该块宽度（cqi），无 JS */
        .description {
            container-type: inline-size;
            container-name: landing-desc;
            color: #fff;
            text-shadow: 0 1px 3px rgba(0, 0, 0, 0.45);
            text-align: right;
            width: min(100%, calc(var(--ux) * 100 / 2.75));
            max-width: min(100%, calc(var(--ux) * 100 / 2.75));
            min-width: 0;
            height: auto;
            box-sizing: border-box;
            display: flex;
            flex-direction: column;
            align-items: stretch;
            gap: clamp(4px, calc(var(--ux) * 0.9), 12px);
            letter-spacing: clamp(0, calc(var(--ux) * 0.12), 1px);
            overflow: hidden;
        }

        .description-line,
        .description-line--lead,
        .description-line--sub {
            display: block;
            width: 100%;
            max-width: 100%;
            min-width: 0;
            box-sizing: border-box;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            line-height: 1.55;
            text-align: right;
        }

        /* 无容器查询时用屏宽刻度；支持 cqi 时随 .description 实际宽度变化 */
        .description-line--lead {
            font-size: clamp(32px, calc(var(--ux) * 6.8), 60px);
        }

        .description-line--sub {
            font-size: clamp(30px, calc(var(--ux) * 6.2), 56px);
        }

        @supports (font-size: 1cqi) {
            .description-line--lead {
                font-size: clamp(30px, 15cqi, 68px);
            }

            .description-line--sub {
                font-size: clamp(28px, 14cqi, 64px);
            }
        }

        .hero-play-btn {
            width: clamp(88px, calc(var(--ux) * 10), 144px);
            height: clamp(88px, calc(var(--ux) * 10), 144px);
            padding: 0;
            border: 4px solid rgba(255, 255, 255, 0.85);
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.22);
            backdrop-filter: blur(4px);
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
            transition: background 0.2s ease, transform 0.2s ease;
        }

        .hero-play-btn--center {
            position: absolute;
            left: 50%;
            top: 50%;
            z-index: 11;
            transform: translate(-50%, -50%);
            pointer-events: auto;
        }

        .hero-play-btn:hover {
            background: rgba(255, 255, 255, 0.38);
        }

        .hero-play-btn--center:hover {
            transform: translate(-50%, -50%) scale(1.05);
        }

        .hero-play-btn__icon {
            width: 0;
            height: 0;
            margin-left: clamp(6px, calc(var(--ux) * 0.7), 12px);
            border-style: solid;
            border-width: clamp(12px, calc(var(--ux) * 1.4), 20px) 0 clamp(12px, calc(var(--ux) * 1.4), 20px) clamp(20px, calc(var(--ux) * 2.2), 32px);
            border-color: transparent transparent transparent #fff;
        }

        .hero-video-overlay {
            position: fixed;
            inset: 0;
            z-index: 10000;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: clamp(16px, 4vw, 48px);
            background: rgba(0, 0, 0, 0.82);
        }

        .hero-video-overlay__player {
            width: min(960px, 100%);
            max-height: 85vh;
            border-radius: clamp(8px, calc(var(--ux) * 0.8), 12px);
            background: #000;
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.45);
        }

        .hero-video-overlay__close {
            position: absolute;
            top: clamp(12px, 3vw, 24px);
            right: clamp(12px, 3vw, 24px);
            width: clamp(36px, calc(var(--ux) * 4), 44px);
            height: clamp(36px, calc(var(--ux) * 4), 44px);
            padding: 0;
            border: none;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            font-size: clamp(22px, calc(var(--ux) * 2.4), 28px);
            line-height: 1;
            cursor: pointer;
            transition: background 0.2s ease;
        }

        .hero-video-overlay__close:hover {
            background: rgba(255, 255, 255, 0.28);
        }

        /* 萤火虫 */
        .firefly {
            position: absolute;
            width: 6px;
            height: 6px;
            background: #ffeb3b;
            border-radius: 50%;
            box-shadow: 0 0 15px #ffeb3b, 0 0 30px #ffeb3b;
            animation: twinkle 2s ease-in-out infinite;
            z-index: 5;
        }

        @keyframes twinkle {
            0%, 100% { opacity: 0.4; transform: scale(1); }
            50% { opacity: 1; transform: scale(1.3); }
        }

        /* ========== 第二屏 星角故事 ========== */
        .screen2 {
            width: 100%;
            max-width: 100%;
            box-sizing: border-box;
            min-height: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            align-items: stretch;
            background: none;
        }

        .screen-section-body {
            width: 100%;
            box-sizing: border-box;
            padding: var(--section-pad-y-lg) var(--section-pad-x) var(--section-pad-bottom);
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .screen-section-body--story {
            background: #f7f3ea;
        }

        .screen-section-body--ability {
            background: #f3efe4;
        }

        /* 小标签在上、主标题在下：略收紧标签与标题间距（与星角故事区一致） */
        .screen2 .section-header .tag,
        .screen3 .section-header .tag,
        .screen4 .section-header .tag {
            margin-bottom: 8px;
        }

        .section-header {
            text-align: center;
            margin-bottom: var(--block-head-gap);
        }

        .tag {
            display: inline-block;
            background: #74b9ff;
            color: white;
            padding: clamp(6px, calc(var(--ux) * 1.4), 10px) clamp(12px, calc(var(--ux) * 3.2), 26px);
            border-radius: clamp(14px, calc(var(--ux) * 2.8), 22px);
            font-size: var(--text-tag);
            margin-bottom: clamp(10px, calc(var(--ux) * 3), 22px);
            position: relative;
        }

        .tag::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 0;
            border-left: 8px solid transparent;
            border-right: 8px solid transparent;
            border-top: 8px solid #74b9ff;
        }

        /* 设计稿英文小标签：STORY / POWER / WITH ME */
        .tag.tag--en {
            letter-spacing: 0.16em;
            font-weight: 700;
            text-transform: uppercase;
            font-size: clamp(9px, calc(var(--ux) * 1.35), 12px);
            padding-left: clamp(14px, calc(var(--ux) * 3.6), 28px);
            padding-right: clamp(14px, calc(var(--ux) * 3.6), 28px);
            font-family: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
        }

        .section-title {
            font-size: var(--text-product-title);
            color: #2d3436;
            font-weight: 600;
            letter-spacing: var(--text-display-track);
            margin-bottom: clamp(6px, calc(var(--ux) * 1.2), 14px);
        }

        .section-subtitle {
            font-size: var(--text-subtitle);
            color: #b2bec3;
            font-style: italic;
        }

        /* 星角故事：六段文案网格 */
        .story-list {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: clamp(12px, calc(var(--ux) * 2.5), 24px);
            width: 100%;
            max-width: min(1120px, 100%);
            align-self: center;
            box-sizing: border-box;
        }

        .story-item {
            display: flex;
            flex-direction: column;
            align-items: stretch;
            padding: 0;
            border-radius: var(--radius-lg);
            box-shadow: 0 10px 28px rgba(45, 52, 54, 0.08);
            text-align: left;
            min-width: 0;
            overflow: hidden;
            position: relative;
            background: #fff;
        }

        .story-item__media {
            width: 100%;
            aspect-ratio: 16 / 9;
            flex-shrink: 0;
            overflow: hidden;
            line-height: 0;
        }

        .story-item__bg {
            display: block;
            width: 100%;
            height: 100%;
            object-fit: cover;
            object-position: center;
        }

        .story-item__content {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: clamp(8px, calc(var(--ux) * 1.5), 14px);
            width: 100%;
            padding: clamp(14px, calc(var(--ux) * 3), 28px);
            box-sizing: border-box;
        }

        .story-item__num {
            font-size: clamp(22px, calc(var(--ux) * 5.5), 40px);
            font-weight: 700;
            color: #00b894;
            line-height: 1;
        }

        .story-item__text {
            margin: 0;
            font-size: clamp(18px, calc(var(--ux) * 4.2), 26px);
            line-height: 1.65;
            color: #2d3436;
        }

        /* 卡片宽随所在行容器 inline-size 变化（窗口缩放 / 父级变宽时重算，避免只靠首屏 flex） */
        @supports (width: 1cqi) {
            .ability-cards {
                container-type: inline-size;
                container-name: ability-cards-row;
            }

            .ability-card {
                flex: 0 0 calc((100cqi - 3 * var(--ability-card-gap)) / 4);
                width: calc((100cqi - 3 * var(--ability-card-gap)) / 4);
                max-width: calc((100cqi - 3 * var(--ability-card-gap)) / 4);
            }
        }

        .story-abilities-bundle {
            position: relative;
            z-index: 2;
        }

        /* ========== 第三屏 星角能力 ========== */
        .screen3 {
            width: 100%;
            max-width: 100%;
            box-sizing: border-box;
            /* 与屏幕左右留白（约 6px）；与 ability-cards 负边距公式一致 */
            --ability-edge-inset: 6px;
            --screen3-pad-x: var(--section-pad-x);
            min-height: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            align-items: stretch;
            background: none;
        }

        .screen3 .screen-section-body {
            padding: var(--section-pad-y-lg) var(--screen3-pad-x) clamp(32px, calc(var(--ux) * 5.5), 88px);
        }

        .screen3 .tag {
            background: #a29bfe;
        }

        .screen3 .tag::after {
            border-top-color: #a29bfe;
        }

        /* 抵消 screen3 左右 padding，铺满屏宽并保留 --ability-edge-inset */
        .ability-cards {
            --ability-card-gap: clamp(8px, calc(var(--ux) * 1.5), 16px);
            display: flex;
            flex-direction: row;
            flex-wrap: wrap;
            align-items: stretch;
            align-self: stretch;
            justify-content: flex-start;
            gap: var(--ability-card-gap);
            width: calc(100% + 2 * var(--screen3-pad-x) - 2 * var(--ability-edge-inset));
            max-width: none;
            margin-left: calc(-1 * var(--screen3-pad-x) + var(--ability-edge-inset));
            margin-right: calc(-1 * var(--screen3-pad-x) + var(--ability-edge-inset));
            box-sizing: border-box;
        }

        .ability-card {
            flex: 0 0 calc((100% - 3 * var(--ability-card-gap)) / 4);
            width: calc((100% - 3 * var(--ability-card-gap)) / 4);
            min-width: 0;
            height: auto;
            border-radius: var(--radius-lg);
            padding: 0;
            position: relative;
            box-sizing: border-box;
            display: flex;
            flex-direction: column;
            align-items: stretch;
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            box-shadow: 0 14px 36px rgba(45, 52, 54, 0.12);
            background: #fff;
        }

        .ability-card__media {
            width: 100%;
            aspect-ratio: 619 / 736;
            flex-shrink: 0;
            overflow: hidden;
            line-height: 0;
            background: #f5f0e8;
        }

        .ability-card__bg {
            display: block;
            width: 100%;
            height: 100%;
            object-fit: cover;
            object-position: center top;
        }

        .ability-card__body {
            display: flex;
            flex-direction: column;
            align-items: stretch;
            flex: 1 1 auto;
            min-width: 0;
            min-height: 0;
            padding: clamp(10px, calc(var(--ux) * 2.2), 40px) clamp(8px, calc(var(--ux) * 1.8), 30px);
            box-sizing: border-box;
        }

        .ability-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 44px rgba(45, 52, 54, 0.16);
        }

        .ability-card.blue,
        .ability-card.pink,
        .ability-card.yellow,
        .ability-card.green {
            background: #fff;
        }

        .ability-card__head {
            display: flex;
            flex-direction: row;
            align-items: baseline;
            gap: clamp(6px, calc(var(--ux) * 1.2), 14px);
            min-width: 0;
            margin-bottom: clamp(8px, calc(var(--ux) * 2.2), 28px);
        }

        .ability-card__head .card-number {
            flex-shrink: 0;
            margin-bottom: 0;
        }

        .ability-card__head .card-title {
            flex: 1 1 auto;
            min-width: 0;
            margin-bottom: 0;
        }

        .card-number {
            font-size: clamp(26px, calc(var(--ux) * 8.2), 72px);
            font-weight: 700;
            color: #2d3436;
            margin-bottom: clamp(4px, calc(var(--ux) * 0.9), 10px);
            font-family: 'Sbzt', 'Microsoft YaHei', 'PingFang SC', sans-serif;
            line-height: 1;
            min-width: 0;
            max-width: 100%;
            overflow-wrap: anywhere;
        }

        .card-title {
            font-size: clamp(24px, calc(var(--ux) * 6.2), 48px);
            font-weight: 600;
            margin-bottom: clamp(8px, calc(var(--ux) * 2.2), 28px);
            line-height: 1.25;
            min-width: 0;
            max-width: 100%;
            overflow-wrap: break-word;
            word-break: break-word;
        }

        .ability-card.blue .card-title {
            color: #00b894;
        }

        .ability-card.pink .card-title {
            color: #e84393;
        }

        .ability-card.yellow .card-title {
            color: #d35400;
        }

        .ability-card.green .card-title {
            color: #00b894;
        }

        .card-desc {
            font-size: clamp(24px, calc(var(--ux) * 5.6), 32px);
            color: #636e72;
            line-height: 1.55;
            flex: 1 1 auto;
            min-width: 0;
            min-height: 0;
            max-width: 100%;
            overflow: hidden auto;
            overflow-wrap: break-word;
            word-break: break-word;
        }

        /* ========== 第四屏 我与星角 ========== */
        .screen4 {
            width: 100%;
            max-width: 100%;
            min-height: 0;
            box-sizing: border-box;
            --screen4-pad-x: var(--section-pad-x);
            /* 底部额外留白：产品白卡叠入时，轮播与箭头仍能通过滚动完全露出 */
            --screen4-pad-bottom-base: clamp(48px, calc(var(--ux) * 11), 160px);
            --screen4-overlap-clearance: clamp(52px, calc(var(--ux) * 12.5), 140px);
            background-color: #ebe4f7;
            background-image:
                linear-gradient(to top, rgba(20, 28, 32, 0.38) 0%, rgba(45, 52, 54, 0.14) 22%, rgba(45, 52, 54, 0.04) 48%, transparent min(52%, 220px)),
                url('../assets/image/memory-section-bg.png');
            background-size: 100% 100%, cover;
            background-position: center bottom, center;
            background-repeat: no-repeat, no-repeat;
            padding: clamp(20px, calc(var(--ux) * 5), 40px) var(--screen4-pad-x) calc(var(--screen4-pad-bottom-base) + var(--screen4-overlap-clearance));
            display: flex;
            flex-direction: column;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        /* 标题区：标签、三角、大标题同一竖轴居中 */
        .screen4 .section-header {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            width: 100%;
        }

        .screen4 .tag {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: #00b894;
            color: #fff;
            padding: clamp(6px, calc(var(--ux) * 1.4), 10px) clamp(12px, calc(var(--ux) * 3.2), 26px);
            border-radius: clamp(14px, calc(var(--ux) * 2.8), 22px);
            font-size: var(--text-tag);
            position: relative;
            width: auto;
            height: auto;
            min-width: 0;
            box-sizing: border-box;
            text-align: center;
            line-height: 1.4;
        }

        .screen4 .tag::after {
            display: block;
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 0;
            border-left: 8px solid transparent;
            border-right: 8px solid transparent;
            border-top: 8px solid #00b894;
        }

        .screen4 .section-title {
            text-align: center;
        }

        .screen4 .section-subtitle {
            text-align: center;
        }

        /* 抵消 screen4 左右 padding，视频列表与屏同宽；cqi 相对本容器算五卡宽度 */
        .gallery-container {
            --gallery-gap: var(--gallery-gap-fluid);
            align-self: stretch;
            width: calc(100% + 2 * var(--screen4-pad-x));
            max-width: none;
            margin-left: calc(-1 * var(--screen4-pad-x));
            margin-right: calc(-1 * var(--screen4-pad-x));
            position: relative;
            margin-top: clamp(16px, calc(var(--ux) * 5), 44px);
            overflow: hidden;
            box-sizing: border-box;
            container-type: inline-size;
            container-name: gallery;
        }

        .gallery-wrapper {
            display: flex;
            gap: var(--gallery-gap);
            padding: clamp(10px, calc(var(--ux) * 3), 22px) 0;
            transition: transform 0.5s ease;
            width: max-content;
        }

        /* 一屏固定 5 张，宽度随容器（5 卡之间 4 道 gap） */
        .screen4 .video-card {
            box-sizing: border-box;
            width: calc((100cqi - 4 * var(--gallery-gap)) / 5);
            aspect-ratio: 3 / 4;
            height: auto;
            min-height: clamp(72px, calc(var(--ux) * 18), 120px);
            background-image: url('../assets/image/memory-video-card-frame.png');
            background-size: cover;
            background-position: center;
            border-radius: clamp(12px, calc(var(--ux) * 2.2), 22px);
            position: relative;
            flex-shrink: 0;
            overflow: hidden;
        }

        .screen4 .video-card .video-player {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 20px;
            display: none;
        }

        .screen4 .video-card.has-video .video-player {
            display: block;
        }

        .carousel-controls {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: clamp(10px, calc(var(--ux) * 3), 22px);
            margin-top: clamp(16px, calc(var(--ux) * 5), 40px);
        }

        .arrow-btn {
            width: clamp(36px, calc(var(--ux) * 9), 52px);
            height: clamp(36px, calc(var(--ux) * 9), 52px);
            border-radius: 50%;
            background: transparent;
            border: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform 0.3s ease;
            padding: 0;
        }

        .arrow-btn img {
            width: 100%;
            height: 100%;
            object-fit: contain;
        }

        .arrow-btn:hover {
            transform: scale(1.1);
        }

        /* 总宽 = 屏宽 1/10；圆点按比例分配（当前项略宽） */
        .screen4 .dots {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 10vw;
            min-width: 0;
            max-width: 10vw;
            box-sizing: border-box;
            gap: clamp(1px, 0.25vw, 4px);
            flex-shrink: 0;
        }

        .screen4 .dot {
            flex: 1 1 0;
            min-width: 0;
            width: auto;
            height: clamp(4px, 0.65vw, 9px);
            border-radius: 999px;
            background: #dfe6e9;
            cursor: pointer;
            transition: flex-grow 0.3s ease, background 0.3s ease, border-radius 0.3s ease;
        }

        .screen4 .dot.active {
            flex: 2.6 1 0;
            background: #a29bfe;
            min-width: clamp(10px, 1.8vw, 22px);
        }

        /* 仅桌面：我与星角接近一屏 */
        @media (min-width: 769px) {
            .screen4 {
                min-height: min(var(--vh), 960px);
            }
        }

        /* ========== 我与星角 → 粉底+产品+浅绿 CTA（关系见模板注释；变量在 bridge 上供子级继承） ========== */
        .memory-product-footer-bridge {
            position: relative;
            --memory-pink-h: clamp(72px, calc(var(--ux) * 18), 172px);
            --memory-pink-pad-bottom: clamp(28px, calc(var(--ux) * 6.5), 56px);
            --memory-pink-bottom-r: clamp(20px, calc(var(--ux) * 4.2), 44px);
            /* 粉底+产品上移量（略减，避免白卡盖住记忆区轮播/控件；与 screen4 底部 overlap-clearance 配合） */
            --product-straddle-lift: clamp(36px, calc(var(--memory-pink-h) * 0.28 + var(--ux) * 6), 92px);
            /* 粉+产品与浅绿之间的流式留白；略小于 underlap 常见值，使净 margin 常为负、粉底仍能压在绿顶 */
            --explore-cta-stack-gap: clamp(16px, calc(var(--ux) * 4.2), 38px);
            /* 粉底下沿压在浅绿区上的叠入量 */
            --explore-cta-underlap: clamp(18px, calc(var(--memory-pink-pad-bottom) * 0.5 + var(--memory-pink-bottom-r) * 0.42), 52px);
            --explore-cta-base-pad: clamp(28px, calc(var(--ux) * 7), 52px);
        }

        .memory-product-stack {
            position: relative;
            z-index: 3;
            margin-top: calc(-1 * var(--product-straddle-lift));
            width: 100%;
            max-width: 100%;
            box-sizing: border-box;
            /* 与「我与星角」底边衔接的整块粉区（设计图） */
            background: linear-gradient(180deg, #fdeef6 0%, #ffd8ea 22%, #ffc4df 55%, #ffb3d4 100%);
            padding-bottom: var(--memory-pink-pad-bottom);
            border-radius: 0 0 var(--memory-pink-bottom-r) var(--memory-pink-bottom-r);
        }

        /* 顶部一条：上沿直角接 screen4；侧面与主体粉底连成一片，下沿不设圆角（由 stack 底部统一圆角） */
        .memory-product-pink-deck {
            width: 100%;
            height: var(--memory-pink-h);
            min-height: var(--memory-pink-h);
            box-sizing: border-box;
            border-radius: 0;
            background: linear-gradient(180deg, #fff5fa 0%, #ffe8f2 45%, #ffd0e6 100%);
            position: relative;
            z-index: 1;
        }

        /* 产品详情：透明底透出 stack 的粉；白卡叠在上、规格区横向铺满（设计图） */
        .screen5 {
            --deck-card-inset: 0;
            width: 100%;
            max-width: 100%;
            box-sizing: border-box;
            display: flex;
            flex-direction: column;
            align-items: stretch;
            isolation: isolate;
            background: transparent;
            position: relative;
            z-index: 4;
            /* 整体上移后略回调，使白卡跨「记忆紫底 / 粉底」分界线更接近一半一半 */
            margin-top: calc(14px - var(--memory-pink-h) + (var(--product-straddle-lift) * 0.12));
            padding: 0;
        }

        .product-section {
            /* 与左右 padding 一致，供 .specs-container 负边距铺满白卡内宽 */
            --product-pad-x: var(--section-pad-x);
            background: #fff;
            /* 上圆角更明显，贴合「白卡压在粉底上」 */
            border-radius: clamp(22px, calc(var(--ux) * 4.8), 42px) clamp(22px, calc(var(--ux) * 4.8), 42px) clamp(14px, calc(var(--ux) * 3.2), 26px) clamp(14px, calc(var(--ux) * 3.2), 26px);
            margin-top: clamp(-8px, calc(var(--ux) * -1), -2px);
            margin-left: 0;
            margin-right: 0;
            width: 100%;
            max-width: 100%;
            margin-bottom: 0;
            box-sizing: border-box;
            padding: clamp(28px, calc(var(--ux) * 7), 64px) var(--product-pad-x) clamp(36px, calc(var(--ux) * 8), 88px);
            position: relative;
            z-index: 3;
            transform: translateY(clamp(-6px, calc(var(--ux) * -0.8), -2px));
            border: 1px solid rgba(255, 255, 255, 0.9);
            box-shadow:
                0 0 0 1px rgba(45, 52, 54, 0.05),
                0 -20px 48px rgba(0, 0, 0, 0.1),
                0 28px 56px rgba(0, 0, 0, 0.12);
        }

        /* 浅绿 CTA：先与粉+产品留白（stack-gap），再整体上移 underlap，使粉底压在绿区顶；z-index 低于 stack */
        .landing-explore-cta {
            width: 100%;
            max-width: 100%;
            box-sizing: border-box;
            margin-top: calc(var(--explore-cta-stack-gap) - var(--explore-cta-underlap));
            padding: calc(var(--explore-cta-base-pad) + (var(--explore-cta-underlap) * 0.62)) var(--section-pad-x) clamp(32px, calc(var(--ux) * 7.5), 60px);
            background: linear-gradient(180deg, #e8f8ef 0%, #d8f0e4 48%, #cce8da 100%);
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .landing-explore-cta__inner {
            max-width: 640px;
            margin: 0 auto;
        }

        .landing-explore-cta__title {
            margin: 0 0 clamp(10px, calc(var(--ux) * 2.2), 18px);
            font-size: clamp(34px, calc(var(--ux) * 7.6), 52px);
            font-weight: 700;
            letter-spacing: 0.04em;
            line-height: 1.45;
            color: #1e5638;
        }

        .landing-explore-cta__sub {
            margin: 0 0 clamp(18px, calc(var(--ux) * 4.2), 28px);
            font-size: clamp(24px, calc(var(--ux) * 5), 30px);
            font-weight: 500;
            line-height: 1.65;
            color: rgba(30, 86, 56, 0.82);
        }

                .screen5 .screen5-section-header {
            text-align: center;
            margin-bottom: clamp(24px, calc(var(--ux) * 6), 52px);
        }

        /* 大标题：气泡在上；「产品详情」四字连续、不加字间距 */
        .screen5-product-title {
            display: flex;
            justify-content: center;
            margin: 0 0 10px;
            line-height: 1.15;
            letter-spacing: 0;
        }

        .screen5-product-heading {
            --screen5-title-size: var(--text-product-title);
            display: inline-flex;
            align-items: stretch;
            flex-wrap: nowrap;
            white-space: nowrap;
            font-size: var(--screen5-title-size);
            color: #2d3436;
            font-weight: 600;
            max-width: 100%;
        }

        .screen5-char-col {
            display: inline-flex;
            flex-direction: column;
            align-items: center;
            flex-shrink: 0;
        }

        .screen5-title-main {
            font-size: inherit;
            font-weight: inherit;
            color: inherit;
            letter-spacing: normal;
            line-height: 1.15;
        }

        .screen5 .screen5-product-tag {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            box-sizing: border-box;
            background: transparent;
            background-image: url('../assets/image/product-heading-bubble-bg.png');
            /* contain 不变形；区域够大时整图放大，文字单行落在气泡内 */
            background-size: contain;
            background-repeat: no-repeat;
            background-position: center;
            min-width: min(280px, calc(var(--ux) * 72));
            min-height: clamp(52px, calc(var(--ux) * 14), 78px);
            padding: clamp(10px, calc(var(--ux) * 2.4), 18px) clamp(14px, calc(var(--ux) * 5), 34px) clamp(14px, calc(var(--ux) * 3.8), 24px);
            margin: 0 0 4px;
            color: #fff;
            font-size: clamp(20px, calc(var(--ux) * 4.8), 28px);
            font-weight: 500;
            line-height: 1.35;
            text-align: center;
            white-space: nowrap;
            position: relative;
            transform: translateX(calc(var(--screen5-title-size) * -1.62));
        }

        .screen5 .screen5-product-tag::after {
            display: none;
        }

        .screen5 .section-subtitle {
            font-size: var(--text-subtitle);
            color: #b2bec3;
            font-style: italic;
        }

        /* 每行 2 个，单卡宽约屏宽 30%（窄屏随容器收缩）；负边距抵消标题区 padding，与白卡左右对齐铺满 */
        .specs-container {
            --spec-grid-gap: clamp(10px, calc(var(--ux) * 2.8), 28px);
            display: grid;
            grid-template-columns: repeat(2, min(30vw, calc((100% - var(--spec-grid-gap)) / 2)));
            gap: var(--spec-grid-gap);
            justify-content: center;
            width: calc(100% + 2 * var(--product-pad-x));
            max-width: none;
            margin-left: calc(-1 * var(--product-pad-x));
            margin-right: calc(-1 * var(--product-pad-x));
            box-sizing: border-box;
        }

        .spec-card {
            background: #f8f9fa;
            border-radius: var(--radius-lg);
            padding: clamp(12px, calc(var(--ux) * 2.6), 30px);
            min-width: 0;
            width: 100%;
            max-width: 100%;
            height: auto;
            min-height: 0;
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .spec-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        }

        .spec-icon {
            width: clamp(36px, calc(var(--ux) * 8), 52px);
            height: clamp(36px, calc(var(--ux) * 8), 52px);
            display: block;
            object-fit: contain;
            object-position: left center;
            margin-bottom: 15px;
            flex-shrink: 0;
        }

        .spec-title {
            font-size: clamp(26px, calc(var(--ux) * 5.8), 36px);
            color: #2d3436;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .spec-content {
            font-size: clamp(24px, calc(var(--ux) * 5.6), 32px);
            color: #636e72;
            line-height: 1.5;
            margin-bottom: 5px;
        }

        .spec-note {
            font-size: clamp(20px, calc(var(--ux) * 4.8), 28px);
            color: #b2bec3;
        }

        /* ========== 页脚：桌面四列并排（星角萌萌｜产品｜支持｜关于）；手机 2×2；窄屏字号 clamp 缩小 ========== */
        .footer {
            position: relative;
            z-index: 5;
            background: #fff;
            color: #2d3436;
            --footer-head-fs: clamp(30px, calc(var(--ux) * 7), 40px);
            --footer-desc-fs: clamp(18px, calc(var(--ux) * 4.2), 24px);
            padding: clamp(24px, calc(var(--ux) * 5.5), 40px) var(--section-pad-x) clamp(20px, calc(var(--ux) * 4.5), 32px);
            text-align: left;
            margin-top: 0;
            border-top: 1px solid rgba(45, 52, 54, 0.08);
            box-shadow: 0 -4px 24px rgba(45, 52, 54, 0.06);
        }

        .footer-content {
            max-width: 1120px;
            margin: 0 auto;
        }

        .footer-main-row {
            display: grid;
            grid-template-columns: repeat(4, minmax(0, 1fr));
            align-items: start;
            column-gap: clamp(14px, calc(var(--ux) * 3.2), 28px);
            row-gap: clamp(16px, calc(var(--ux) * 4), 28px);
            margin-bottom: clamp(22px, calc(var(--ux) * 5), 36px);
            padding-bottom: clamp(20px, calc(var(--ux) * 4.5), 28px);
            border-bottom: 1px solid rgba(45, 52, 54, 0.08);
        }

        /* nav 不参与盒模型，三列与 aside 同属一行四格 */
        .footer-nav {
            display: contents;
        }

        .footer-brand {
            display: block;
            min-width: 0;
        }

        .footer-brand__body {
            min-width: 0;
        }

        .footer-brand__name {
            margin: 0 0 4px;
            font-size: var(--footer-head-fs);
            font-weight: 700;
            color: #2d3436;
            letter-spacing: 0.02em;
        }

        .footer-brand__tag {
            margin: 0 0 clamp(6px, calc(var(--ux) * 1.6), 10px);
            font-size: var(--footer-desc-fs);
            font-weight: 500;
            color: #27ae60;
            letter-spacing: 0.04em;
        }

                .footer-nav__col {
            min-width: 0;
            text-align: left;
        }

        .footer-meta {
            text-align: center;
        }

        .footer-nav__head {
            font-size: var(--footer-head-fs);
            font-weight: 600;
            color: #2d3436;
            margin-bottom: clamp(6px, calc(var(--ux) * 1.6), 11px);
        }

        .footer-nav__link {
            display: block;
            font-size: var(--footer-desc-fs);
            color: #636e72;
            text-decoration: none;
            margin-bottom: 5px;
            transition: color 0.2s ease;
            overflow-wrap: anywhere;
            word-break: break-word;
        }

        .footer-nav__link:hover {
            color: #27ae60;
        }

        .footer-nav__muted {
            display: block;
            font-size: var(--footer-desc-fs);
            color: #b2bec3;
            margin-bottom: 5px;
            overflow-wrap: anywhere;
            word-break: break-word;
        }

        .certificate {
            font-size: clamp(24px, calc(var(--ux) * 5.6), 32px);
            color: #636e72;
            margin-bottom: clamp(6px, calc(var(--ux) * 1.2), 10px);
        }

        .copyright {
            font-size: clamp(20px, calc(var(--ux) * 4.8), 28px);
            color: #b2bec3;
            margin: 0;
        }

        /* ========== 响应式 ========== */
                @media (max-width: 768px) {
            .star-landing-root {
                --section-pad-x: clamp(10px, calc(var(--ux) * 3.6), 22px);
                --section-pad-y: clamp(16px, calc(var(--ux) * 4.8), 52px);
                --section-pad-y-lg: clamp(22px, calc(var(--ux) * 6.2), 64px);
                --block-head-gap: clamp(14px, calc(var(--ux) * 4.2), 30px);
                --text-display: clamp(20px, calc(var(--ux) * 5.6), 34px);
                --text-product-title: clamp(44px, calc(var(--ux) * 10.4), 64px);
            }

            .content {
                align-items: flex-end;
                padding-left: clamp(8px, calc(var(--ux) * 2), 16px);
                padding-right: clamp(5%, calc(var(--ux) * 10), 16%);
            }

            .description {
                text-align: right;
                width: min(100%, calc(var(--ux) * 100 / 2.75));
                max-width: min(100%, calc(var(--ux) * 100 / 2.75));
            }

            .screen2 .screen-section-body {
                padding: var(--section-pad-y-lg) var(--section-pad-x) var(--section-pad-bottom);
            }

            .screen3 .screen-section-body {
                --screen3-pad-x: var(--section-pad-x);
                padding: var(--section-pad-y-lg) var(--screen3-pad-x) clamp(28px, calc(var(--ux) * 6), 52px);
            }

            .screen4 {
                --screen4-pad-x: var(--section-pad-x);
                --screen4-pad-bottom-base: clamp(28px, calc(var(--ux) * 6.5), 48px);
                --screen4-overlap-clearance: clamp(40px, calc(var(--ux) * 9.5), 100px);
                padding: var(--section-pad-y) var(--screen4-pad-x) calc(var(--screen4-pad-bottom-base) + var(--screen4-overlap-clearance));
            }

            .memory-product-footer-bridge {
                --memory-pink-h: clamp(56px, calc(var(--ux) * 14), 124px);
                --memory-pink-pad-bottom: clamp(22px, calc(var(--ux) * 5.5), 44px);
                --memory-pink-bottom-r: clamp(16px, calc(var(--ux) * 3.6), 32px);
                --explore-cta-base-pad: clamp(24px, calc(var(--ux) * 6), 40px);
                --product-straddle-lift: clamp(28px, calc(var(--memory-pink-h) * 0.3 + var(--ux) * 5), 76px);
                --explore-cta-stack-gap: clamp(18px, calc(var(--ux) * 4.6), 40px);
            }

            .screen5 {
                --deck-card-inset: 0;
                margin-top: calc(14px - var(--memory-pink-h) + (var(--product-straddle-lift) * 0.1));
                padding: 0;
            }

            .screen5-product-heading {
                font-size: var(--screen5-title-size);
            }

            .screen5 .screen5-product-tag {
                font-size: clamp(20px, calc(var(--ux) * 4.8), 28px);
                min-width: 0;
                width: 100%;
                max-width: min(300px, 100%);
                min-height: clamp(48px, calc(var(--ux) * 12), 64px);
                padding: clamp(8px, calc(var(--ux) * 2), 14px) clamp(10px, calc(var(--ux) * 2.8), 18px);
                transform: none;
                margin-left: auto;
                margin-right: auto;
            }
            
            .product-section {
                transform: translateY(-4px);
                margin-bottom: 0;
                --product-pad-x: var(--section-pad-x);
                padding: clamp(22px, calc(var(--ux) * 5.5), 36px) var(--product-pad-x) clamp(28px, calc(var(--ux) * 6.5), 40px);
                border-radius: clamp(18px, calc(var(--ux) * 4), 26px) clamp(18px, calc(var(--ux) * 4), 26px) clamp(10px, calc(var(--ux) * 2.4), 16px) clamp(10px, calc(var(--ux) * 2.4), 16px);
            }

            .screen5 .screen5-section-header {
                margin-bottom: clamp(18px, calc(var(--ux) * 4.5), 28px);
            }

            .landing-explore-cta {
                margin-top: calc(var(--explore-cta-stack-gap) - var(--explore-cta-underlap));
                padding: calc(var(--explore-cta-base-pad) + (var(--explore-cta-underlap) * 0.58)) var(--section-pad-x) clamp(28px, calc(var(--ux) * 6.5), 44px);
            }

            /* 手机：四块 2×2；字号随屏宽略缩（与 --ux 一致） */
            .footer-main-row {
                grid-template-columns: repeat(2, minmax(0, 1fr));
                column-gap: clamp(10px, calc(var(--ux) * 2.8), 18px);
                row-gap: clamp(14px, calc(var(--ux) * 3.6), 22px);
            }

            .footer {
                --footer-head-fs: clamp(26px, calc(var(--ux) * 6.5), 34px);
                --footer-desc-fs: clamp(16px, calc(var(--ux) * 3.8), 22px);
                padding: clamp(18px, calc(var(--ux) * 4.5), 28px) var(--section-pad-x);
            }

            .footer-brand__name,
            .footer-nav__head {
                font-size: var(--footer-head-fs);
            }

            .footer-brand__tag,
            .footer-nav__link,
            .footer-nav__muted {
                font-size: var(--footer-desc-fs);
            }

        }

        /* 手机 / 小平板横屏：视口矮，取消强 min-height、压缩上下留白 */
        @media (max-width: 926px) and (orientation: landscape) and (max-height: 540px) {
            .screen2 .screen-section-body {
                padding: 36px 28px 12px;
            }

            .screen3 .screen-section-body {
                --screen3-pad-x: 28px;
                padding: 40px 28px 44px;
            }

            .screen4 {
                min-height: 0;
                --screen4-pad-x: 20px;
                --screen4-pad-bottom-base: clamp(32px, 8svh, 64px);
                --screen4-overlap-clearance: clamp(32px, calc(var(--ux) * 8), 80px);
                padding: 12px 20px calc(var(--screen4-pad-bottom-base) + var(--screen4-overlap-clearance));
            }

            .section-header {
                margin-bottom: 28px;
            }

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

            .ability-card {
                flex: 0 0 calc((100% - var(--ability-card-gap)) / 2);
                width: calc((100% - var(--ability-card-gap)) / 2);
            }

            .story-item,
            .ability-card {
                min-height: 0;
            }

            .gallery-container {
                margin-top: 16px;
            }

            .carousel-controls {
                margin-top: 20px;
            }

            .screen4 .video-card {
                width: calc((100cqi - 4 * var(--gallery-gap)) / 5);
                min-height: 72px;
            }

            .memory-product-footer-bridge {
                --memory-pink-h: clamp(44px, calc(var(--ux) * 11), 100px);
                --memory-pink-pad-bottom: clamp(16px, calc(var(--ux) * 4), 32px);
                --memory-pink-bottom-r: clamp(14px, calc(var(--ux) * 3), 28px);
                --explore-cta-base-pad: clamp(20px, 5svh, 36px);
                --product-straddle-lift: clamp(22px, calc(var(--memory-pink-h) * 0.26 + var(--ux) * 4), 60px);
                --explore-cta-stack-gap: clamp(14px, calc(var(--ux) * 3.8), 28px);
            }

            .screen5 {
                margin-top: calc(14px - var(--memory-pink-h) + (var(--product-straddle-lift) * 0.08));
            }

            .product-section {
                transform: translateY(-4px);
                --product-pad-x: 16px;
                padding: 28px var(--product-pad-x) 36px;
            }

            .landing-explore-cta {
                margin-top: calc(var(--explore-cta-stack-gap) - var(--explore-cta-underlap));
                padding: calc(var(--explore-cta-base-pad) + (var(--explore-cta-underlap) * 0.55)) 16px 24px;
            }
        }

        /* 窄但不算「手机」的横屏（如分屏浏览器） */
        @media (min-width: 769px) and (max-width: 1200px) and (orientation: landscape) and (max-height: 560px) {
            .screen2 .screen-section-body {
                padding: 48px 40px 16px;
            }

            .screen3 .screen-section-body {
                --screen3-pad-x: 40px;
                padding: 56px 40px 48px;
            }

            .screen4 {
                min-height: 0;
                --screen4-pad-x: 40px;
                --screen4-pad-bottom-base: clamp(48px, 9vh, 96px);
                --screen4-overlap-clearance: clamp(40px, calc(var(--ux) * 10), 88px);
                padding: 20px 40px calc(var(--screen4-pad-bottom-base) + var(--screen4-overlap-clearance));
            }
        }

        /* 桌面横屏、窗口压扁 */
        @media (min-width: 1201px) and (orientation: landscape) and (max-height: 700px) {
            .screen2 .screen-section-body {
                padding: 56px 56px 16px;
            }

            .screen4 {
                min-height: 0;
                --screen4-pad-x: 56px;
                --screen4-pad-bottom-base: clamp(56px, 10vh, 112px);
                --screen4-overlap-clearance: clamp(44px, calc(var(--ux) * 10), 96px);
                padding: 24px 56px calc(var(--screen4-pad-bottom-base) + var(--screen4-overlap-clearance));
            }

            .section-header {
                margin-bottom: 40px;
            }
        }

html, body {
  height: 100%;
  margin: 0;
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

.app-main {
  flex: 1;
  min-height: 0;
  min-width: 0;
  width: 100%;
  max-width: 100%;
  padding: 0;
  overflow: hidden;
  box-sizing: border-box;
}

.hero-video-overlay[hidden] {
  display: none !important;
}