* {
    padding: 0;
    margin: 0;
    -webkit-user-drag: none;
    user-select: none;
    box-sizing: border-box;
}

/* 统一缩放因子：1920×1080 基准（1.78 = 1920/1080），超宽屏按高度封顶，防止元素放大溢出 */
:root {
    --dw: min(1vw, 1.78vh);
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', Arial, sans-serif;
    width: 100%;
    height: 100%;
}

/* 黑金版：单张 bg 整页背景，bottom 锚定保底部黄角贴边；
   顶部约 12% 是烘焙好的深色头带（16:9 视口时正好露出做顶栏区） */
.desktop {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
    background-color: #0d0a04;
    background-repeat: no-repeat;
    background-position: center bottom;
    background-size: cover;
}

/* ============ 顶栏：文字链 ×2 + 商务合作黄色胶囊（全部 CSS，无切图） ============ */
.header {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 5;
    height: calc(6.6 * var(--dw));
    display: flex;
    justify-content: flex-end;
    align-items: center;
    padding: 0 4vw;
    gap: calc(2.6 * var(--dw));
}

.logo {
    height: calc(4.6 * var(--dw));
    width: auto;
    object-fit: contain;
    margin-right: auto;
    flex-shrink: 0;
}

.nav-link {
    color: #e8e8e8;
    font-size: calc(1.25 * var(--dw));
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: color 0.2s;
}

.nav-link:hover {
    color: #FFD640;
}

.nav-pill {
    background: linear-gradient(180deg, #FFE27A, #F5C518);
    color: #111;
    font-weight: 700;
    font-size: calc(1.2 * var(--dw));
    padding: calc(0.65 * var(--dw)) calc(2 * var(--dw));
    border-radius: calc(2 * var(--dw));
    cursor: pointer;
    transition: transform 0.2s, opacity 0.2s;
}

.nav-pill:active {
    transform: scale(0.97);
    opacity: 0.85;
}

/* ============ 左列：无切图文字全部 CSS ============ */
.left-col {
    position: absolute;
    left: 4vw;
    top: calc(19 * var(--dw));
    z-index: 4;
}

/* 黄描边小标签 */
.tag {
    display: inline-block;
    color: #FFD640;
    border: 1px solid #FFD640;
    border-radius: calc(1.5 * var(--dw));
    font-size: calc(1.3 * var(--dw));
    padding: calc(0.45 * var(--dw)) calc(1.5 * var(--dw));
    letter-spacing: 0.06em;
}

/* 大标题：白 + 黄两行，下带金色渐隐线 */
.headline {
    margin-top: calc(1.6 * var(--dw));
    font-size: calc(3.8 * var(--dw));
    line-height: 1.28;
    font-weight: 800;
    letter-spacing: 0.04em;
}

.headline .hl-white {
    color: #ffffff;
}

.headline .hl-yellow {
    color: #FFD640;
}

.headline::after {
    content: '';
    display: block;
    width: calc(14 * var(--dw));
    height: calc(0.28 * var(--dw));
    margin-top: calc(0.7 * var(--dw));
    border-radius: calc(0.14 * var(--dw));
    background: linear-gradient(90deg, #FFD640, rgba(255, 214, 64, 0));
}

/* 特性词 2×2：金棕色 */
.feature-grid {
    margin-top: calc(1.7 * var(--dw));
    display: grid;
    grid-template-columns: repeat(2, max-content);
    column-gap: calc(2 * var(--dw));
    row-gap: calc(1 * var(--dw));
    color: #C9A45C;
    font-size: calc(1.25 * var(--dw));
    letter-spacing: 0.08em;
}

/* 免费开始 / 立即体验 */
.cta-row {
    margin-top: calc(2.8 * var(--dw));
    display: flex;
    align-items: center;
    gap: calc(1.5 * var(--dw));
}

.cta {
    cursor: pointer;
    transition: transform 0.2s, opacity 0.2s;
}

.cta:active {
    transform: scale(0.97);
    opacity: 0.9;
}

.cta--primary {
    background: linear-gradient(180deg, #FFE27A, #F2BD0F);
    color: #111;
    font-weight: 800;
    font-size: calc(1.7 * var(--dw));
    padding: calc(1.2 * var(--dw)) calc(3.4 * var(--dw));
    border-radius: calc(2.6 * var(--dw));
    box-shadow: 0 0 calc(1.4 * var(--dw)) rgba(255, 214, 64, 0.5);
}

.cta--ghost {
    color: #ffffff;
    font-size: calc(1.6 * var(--dw));
    padding: calc(1.1 * var(--dw)) calc(2.8 * var(--dw));
    border: 1px solid rgba(255, 255, 255, 0.45);
    border-radius: calc(2.6 * var(--dw));
    background: rgba(0, 0, 0, 0.35);
}

/* 底部小口号：黄字 + 竖线分隔 */
.foot-note {
    margin-top: calc(2.6 * var(--dw));
    display: flex;
    align-items: center;
    gap: calc(1.2 * var(--dw));
    color: #FFD640;
    font-size: calc(1.2 * var(--dw));
    letter-spacing: 0.06em;
}

.foot-note i {
    width: 1px;
    height: calc(1.05 * var(--dw));
    background: rgba(255, 255, 255, 0.35);
}

/* ============ 中上部：双胶囊标语切图，微倾斜 ============ */
.title-img {
    position: absolute;
    left: 17vw;
    top: calc(14.5 * var(--dw));
    z-index: 3;
    width: calc(32 * var(--dw));
    height: auto;
    object-fit: contain;
    transform: rotate(-5deg);
    pointer-events: none;
}

/* ============ 右侧：单张人物拼合大图，贴底 ============ */
.renwu-img {
    position: absolute;
    right: 0;
    bottom: 0;
    z-index: 2;
    width: calc(63.5 * var(--dw));
    height: auto;
    object-fit: contain;
    pointer-events: none;
}

/* ============ 二维码面板：qrpic 整图，叠在人物图左下 ============ */
.qr-panel {
    position: absolute;
    right: 17.5vw;
    bottom: calc(8 * var(--dw));
    z-index: 4;
    width: calc(28 * var(--dw));
    height: calc(28 * 440 / 1066 * var(--dw));
    background-repeat: no-repeat;
    background-size: 100% 100%;
}

/* 动态二维码：按像素实测精确叠在面板白框上（白框内缘 x 42~397 / y 42~397，1066×440）
   盖住图里的占位码，保持白底可扫 */
.qr-panel #qrcode {
    position: absolute;
    left: 3.94%;
    top: 9.55%;
    width: 33.4%;
    height: 80.91%;
    background: #fff;
    border-radius: calc(0.3 * var(--dw));
    display: flex;
    align-items: center;
    justify-content: center;
}

.qr-panel #qrcode img,
.qr-panel #qrcode canvas {
    width: 92% !important;
    height: 92% !important;
    display: block;
}