/* 前后台共用：幻灯片文字/按钮图层（所见即所得）
 * 设计参考宽度 1200px：--layer-size 为设计稿像素
 */
.hero-overlay-box,
.canvas-layers.hero-overlay-box {
    position: absolute;
    inset: 0;
    z-index: 3;
    pointer-events: none;
    container-type: inline-size;
    container-name: hero-overlay;
    /* 1 设计像素 = 容器宽度 / 1200 */
    --hero-unit: calc(100cqw / 1200);
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

.hero-overlay-layer {
    position: absolute;
    left: 0;
    top: 0;
    z-index: 3;
    max-width: 90%;
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    border: 1px solid transparent;
    color: #fff;
    font-family: inherit;
    font-weight: 700;
    font-size: calc(var(--layer-size, 28) * var(--hero-unit, 1px));
    line-height: 1.25;
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.35);
    white-space: pre-wrap;
    word-break: break-word;
    pointer-events: auto;
    --layer-rot: 0;
    transform: translate(var(--layer-tx, -50%), -50%) rotate(calc(var(--layer-rot) * 1deg));
    cursor: default;
}

.hero-overlay-layer.is-btn {
    text-shadow: none;
    border-radius: calc(var(--layer-radius, 999) * var(--hero-unit, 1px));
    padding: 0.55em 1.35em;
    font-weight: 600;
    white-space: nowrap;
    box-shadow: 0 6px 18px rgba(15, 23, 42, 0.18);
}

.hero-overlay-link {
    color: inherit;
    text-decoration: none;
}

/* 后台编辑态 */
.hero-overlay-layer.layer {
    cursor: move;
}
.hero-overlay-layer.layer.selected {
    border-color: #3b82f6;
    box-shadow: 0 0 0 1px rgba(59, 130, 246, 0.35);
    z-index: 30;
}
.hero-overlay-layer.layer.is-btn.selected {
    box-shadow: 0 0 0 1px rgba(59, 130, 246, 0.35), 0 6px 18px rgba(15, 23, 42, 0.18);
}
.hero-overlay-layer.layer.editing {
    cursor: text;
    z-index: 31;
    min-width: 0;
    width: max-content;
    max-width: 90%;
}
.hero-overlay-layer.is-regular {
    font-weight: 400;
}
.hero-overlay-layer.is-kicker {
    letter-spacing: 0.18em;
    font-weight: 400;
    opacity: 0.9;
}
.hero-overlay-layer.is-img {
    text-shadow: none;
    line-height: 0;
    letter-spacing: 0;
    opacity: 1;
    max-width: none;
}
.hero-overlay-layer.is-img img {
    display: block;
    height: calc(var(--layer-size, 20) * var(--hero-unit, 1px));
    width: auto;
    max-width: none;
    pointer-events: none;
}
.hero-overlay-layer.is-img > .layer-img-box,
.hero-overlay-layer.is-img > .hero-overlay-link {
    display: block;
}
.layer-img-box {
    position: relative;
    display: block;
    overflow: hidden;
    line-height: 0;
    background: transparent;
}
.hero-overlay-layer.is-img.is-fx {
    --bri-t: clamp(-1, calc(var(--img-bri, 0) * 0.01), 1);
    --bri-up: max(0, var(--bri-t));
}
.hero-overlay-layer.is-img.is-fx img {
    filter: hue-rotate(calc(var(--img-hue, 0) * 1deg)) saturate(calc(var(--img-sat, 100) * 1%)) contrast(calc((1 - var(--bri-up)) / (1 + var(--bri-up)))) brightness(calc(1 + var(--bri-t)));
}
.hero-overlay-layer.is-img.is-fx.is-frost img {
    filter: hue-rotate(calc(var(--img-hue, 0) * 1deg)) saturate(calc(var(--img-sat, 100) * 1%)) contrast(calc((1 - var(--bri-up)) / (1 + var(--bri-up)))) brightness(calc(1 + var(--bri-t))) blur(calc(var(--img-frost, 0) * var(--hero-unit, 1px)));
}
.hero-overlay-layer.is-img.is-noisy .layer-img-box::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    opacity: calc(var(--img-noise, 0) * 0.01);
    mix-blend-mode: overlay;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    background-size: 140px 140px;
}
.hero-overlay-layer.is-img.is-frost img,
.hero-overlay-layer.is-img.is-noisy .layer-img-box::after {
    -webkit-mask-image: var(--img-mask);
    mask-image: var(--img-mask);
    -webkit-mask-repeat: no-repeat;
    mask-repeat: no-repeat;
    -webkit-mask-position: center;
    mask-position: center;
    -webkit-mask-size: 100% 100%;
    mask-size: 100% 100%;
    -webkit-mask-mode: alpha;
    mask-mode: alpha;
}
.hero-overlay-layer.is-img.is-sized img {
    width: calc(var(--layer-w) * var(--hero-unit, 1px));
    object-fit: fill;
}
.hero-overlay-layer.is-btn.is-regular {
    font-weight: 400;
}

@supports not (width: 1cqw) {
    .hero-overlay-box,
    .canvas-layers.hero-overlay-box {
        --hero-unit: 1px;
    }
}