* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --page-bg: #f2f4f7;
    --hero-dark: #020816;
    --hero-blue: #1d7aff;
    --card-bg: rgba(8, 14, 30, 0.88);
    --card-border: rgba(255, 255, 255, 0.12);
    --text-primary: #0b1220;
    --text-secondary: #687385;
    --popup-bg: #f9fbff;
    --input-border: #d5dce8;
}

html {
    /* 隐藏页面滚动条，但保留鼠标滚轮、触控板和键盘滚动 */
    scrollbar-width: none;
    -ms-overflow-style: none;
}

html::-webkit-scrollbar,
body::-webkit-scrollbar {
    width: 0;
    height: 0;
    display: none;
}

body {
    font-family: Inter;
    background: var(--page-bg);
    color: var(--text-primary);
    overflow-y: auto;
}

a {
    text-decoration: none;
}

button,
input {
    font-family: inherit;
}

.page {
    min-height: 100vh;
    overflow-x: hidden;
}

.hero {
    position: relative;
    width: min(1440px, 100%);
    aspect-ratio: 1440 / 630;
    min-height: 0;
    margin: 0 auto;
    background: #050b19;
    overflow: hidden;
    cursor: pointer;
}

.hero-track {
    display: flex;
    width: 100%;
    height: 100%;
    min-height: 0;
    transition: transform 0.6s ease;
}

.hero-slide {
    position: relative;
    flex: 0 0 100%;
    width: 100%;
    height: 100%;
    min-height: 0;
    background: #050b19;
    overflow: hidden;
}

.hero-slide::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg,
            rgba(0, 0, 0, 0.92) 0%,
            rgba(0, 0, 0, 0.74) 30%,
            rgba(0, 0, 0, 0.22) 60%,
            rgba(0, 0, 0, 0.05) 100%);
    z-index: 1;
    pointer-events: none;
}

.hero-slide--first {
    background: #040a16;
}

.hero-slide--first::before {
    background: linear-gradient(90deg,
            rgba(0, 0, 0, 0.18) 0%,
            rgba(0, 0, 0, 0.08) 34%,
            rgba(0, 0, 0, 0.02) 58%,
            rgba(0, 0, 0, 0) 78%);
}

.hero-first-image-wrap {
    position: absolute;
    inset: 0;
    z-index: 0;
    background: #040a16;
}

.hero-first-image {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center center;
    pointer-events: none;
    user-select: none;
    -webkit-user-drag: none;
}

.hero-slide--alt2 {
    background:
        radial-gradient(circle at 70% 45%,
            rgba(14, 98, 255, 0.45),
            transparent 28%),
        radial-gradient(circle at 18% 70%,
            rgba(36, 164, 255, 0.12),
            transparent 25%),
        linear-gradient(90deg, #050913 0%, #041126 48%, #07142f 100%);
}

.hero-slide--alt3 {
    background:
        radial-gradient(circle at 72% 50%, rgba(0, 143, 255, 0.4), transparent 30%),
        linear-gradient(135deg, #04080f 10%, #07122a 52%, #020714 100%);
}

.hero-slide--alt4 {
    background:
        radial-gradient(circle at 78% 40%,
            rgba(41, 122, 255, 0.42),
            transparent 25%),
        linear-gradient(90deg, #05070d 0%, #061126 50%, #08162f 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    width: min(1280px, calc(100% - 80px));
    height: 100%;
    min-height: 0;
    margin: 0 auto;
    padding: 66px 0 44px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    pointer-events: none;
}
.hero-description{
    color: rgba(255, 255, 255, 0.70);
    font-family: Inter;
    font-size: 16px;
    font-style: normal;
    font-weight: 500;
    line-height: 64px; /* 320% */
}


.hero-copy {
    max-width: 430px;
    margin-left: 52px;
    pointer-events: auto;
}

.hero-kicker {
    margin-bottom: 14px;
    color: rgba(8, 117, 255, 1);
    font-size: clamp(29px, 2.5vw, 38px);
    line-height: 1.12;
    font-weight: 800;
    letter-spacing: -0.025em;
    text-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
}

.hero-title {
    font-size: clamp(27px, 2.15vw, 32px);
    line-height: 1.18;
    font-weight: 800;
    color: rgba(255, 255, 255, 0.9);
    letter-spacing: -0.02em;
    text-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
}

.hero-title .accent {
    display: block;
    margin-top: 6px;
    color: rgba(255, 255, 255, 0.9);
}

.hero-btn {
    margin-top: 22px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 160px;
    height: 44px;
    padding: 12px 22px;
    border: none;
    border-radius: 44px;
    background: #0875ff;
    color: #ffffff;
    font-size: 14px;
    font-weight: 700;
    box-shadow: 0 14px 34px rgba(8, 117, 255, 0.35);
    cursor: pointer;
}

.hero-arrow {
    position: absolute;
    top: 50%;
    z-index: 5;
    width: 36px;
    height: 36px;
    margin-top: -18px;
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: 50%;
    background: rgba(3, 9, 20, 0.22);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    backdrop-filter: blur(6px);
    transition: background 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}

.hero-arrow:hover {
    background: rgba(19, 30, 56, 0.55);
    border-color: rgba(255, 255, 255, 0.5);
    transform: scale(1.05);
}

.hero-arrow--prev {
    left: 26px;
}

.hero-arrow--next {
    right: 26px;
}

.hero-arrow svg {
    width: 18px;
    height: 18px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.hero.is-single-slide .hero-arrow {
    display: none;
}




.content-section {
    width: min(1280px, calc(100% - 80px));
    margin: 0 auto;
    padding: 84px 78px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 420px;
    gap: 64px;
    align-items: start;
}

.philosophy-label {
    display: inline-block;
    color: rgba(8, 117, 255, 1);
    font-size: 15px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.philosophy-title {
    margin-top: 18px;
    font-size: 34px;
    line-height: 1.1;
    font-weight: 800;
    color: #070d17;
}

.philosophy-line {
    width: 42px;
    height: 4px;
    margin: 16px 0 32px;
    border-radius: 999px;
    background: rgba(8, 117, 255, 1);
}

.philosophy-text {
    /* max-width: 520px; */
    color: rgba(88, 96, 109, 1);
    font-size: 16px;
    line-height: 1.8;
}

.interested-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-top: 36px;
    min-width: 168px;
    height: 44px;
    padding: 10px 28px;
    border: none;
    border-radius: 20px;
    background: rgba(0, 0, 0, 1);
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 8px 18px rgba(0, 0, 0, 0.12);
}

.interested-btn .arrow {
    font-size: 18px;
    line-height: 1;
}

.popup-anchor {
    position: relative;
    min-height: 380px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 右侧耳机线稿使用普通 PNG 图片，不使用 SVG 或 Base64。 */
.product-sketch {
    display: block;
    width: min(100%, 430px);
    max-height: 360px;
    object-fit: contain;
    object-position: center;
    opacity: 1;
    visibility: visible;
    transition:
        opacity 0.2s ease,
        visibility 0.2s ease;
    user-select: none;
    -webkit-user-drag: none;
}

/* 点击 I'm Interested 后，右侧线稿隐藏，让同一位置显示表单。 */
.product-sketch.is-hidden {
    display: none;
}

.subscribe-popup {
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    /* max-width: 380px; */
    padding: 24px;
    border-radius: 24px;
    background: linear-gradient(180deg, #ffffff 0%, #f7faff 100%);
    box-shadow: 0 22px 50px rgba(13, 32, 72, 0.18);
    opacity: 0;
    visibility: hidden;
    transform: translateY(14px);
    transition:
        opacity 0.25s ease,
        transform 0.25s ease,
        visibility 0.25s ease;
    z-index: 20;
}

.subscribe-popup.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.subscribe-popup.centered-mode {
    position: fixed;
    top: 50%;
    left: 50%;
    right: auto;
    width: min(90vw, 420px);
    max-width: 420px;
    transform: translate(-50%, calc(-50% + 14px));
    z-index: 1001;
}

.subscribe-popup.centered-mode.is-visible {
    transform: translate(-50%, -50%);
}

.popup-overlay {
    position: fixed;
    inset: 0;
    background: rgba(5, 11, 24, 0.32);
    opacity: 0;
    visibility: hidden;
    transition:
        opacity 0.25s ease,
        visibility 0.25s ease;
    z-index: 1000;
}

.popup-overlay.is-visible {
    opacity: 1;
    visibility: visible;
}

.popup-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 12px;
}

.popup-title {
    font-size: 26px;
    line-height: 1.12;
    font-weight: 800;
    color: #0a1018;
}

.popup-close {
    flex-shrink: 0;
    border: none;
    background: transparent;
    color: #252b36;
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
    padding: 2px 0 0;
}

.popup-desc {
    color: rgba(88, 96, 109, 1);
    font-size: 13px;
    line-height: 1.55;
    margin-bottom: 18px;
}

.popup-form {
    position: relative;
}

.popup-input {
    width: 100%;
    height: 48px;
    margin-bottom: 16px;
    padding: 0 18px;
    border-radius: 999px;
    border: 1px solid var(--input-border);
    background: rgba(255, 255, 255, 0.92);
    outline: none;
    color: #1c2430;
    font-size: 14px;
    transition:
        border-color 0.2s ease,
        box-shadow 0.2s ease;
}

.popup-input:focus {
    border-color: #1d7aff;
    box-shadow: 0 0 0 4px rgba(29, 122, 255, 0.09);
}

.popup-input::placeholder {
    color: #8d98aa;
}

/* 表单错误状态：提示统一显示在第二个输入框下方 */
.popup-input.has-error {
    border-color: #ff3347;
    box-shadow: none;
}

.popup-input.has-error:focus {
    border-color: #ff3347;
    box-shadow: 0 0 0 4px rgba(255, 51, 71, 0.09);
}

.popup-consent input[type="checkbox"].has-error {
    border-color: #ff3347;
    box-shadow: 0 0 0 3px rgba(255, 51, 71, 0.08);
}

.popup-form-error {
    display: none;
    align-items: center;
    gap: 7px;
    margin: -7px 8px 17px;
    color: #ff3347;
    font-size: 12px;
    line-height: 1.4;
}

.popup-form-error.is-visible {
    display: flex;
}

.popup-error-icon {
    display: inline-flex;
    flex: 0 0 14px;
    align-items: center;
    justify-content: center;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #ff3347;
    color: #ffffff;
    font-size: 10px;
    font-weight: 800;
    line-height: 1;
}

/* 提交成功提示 */
.popup-success {
    display: none;
    align-items: flex-start;
    gap: 13px;
    margin-top: 22px;
    padding: 15px 17px;
    border: 1px solid #78e2b8;
    border-radius: 15px;
    background: #eafbf4;
    color: #17202b;
}

.popup-success.is-visible {
    display: flex;
}

.popup-success-icon {
    display: inline-flex;
    flex: 0 0 28px;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    margin-top: 1px;
    line-height: 1;
}

.popup-success-icon svg {
    display: block;
    width: 28px;
    height: 28px;
}

.popup-success-copy {
    min-width: 0;
}

.popup-success-title {
    display: block;
    margin-bottom: 2px;
    color: #111820;
    font-size: 14px;
    font-weight: 800;
    line-height: 1.35;
}

.popup-success-text {
    color: #596474;
    font-size: 12px;
    line-height: 1.45;
}

.popup-footnote.is-hidden {
    display: none;
}

.popup-consent {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin: 2px 8px 18px;
    color: #5f6979;
    font-size: 13px;
    line-height: 1.55;
    cursor: pointer;
    user-select: none;
}

.popup-consent>span {
    min-width: 0;
}

/* Privacy Policy 默认蓝色且不带下划线 */
.popup-consent a {
    color: #0875ff;
    text-decoration: none;
    text-underline-offset: 3px;
    transition: text-decoration-color 0.2s ease;
}

/* 鼠标悬浮时显示蓝色下划线 */
.popup-consent a:hover,
.popup-consent a:focus-visible {
    color: #0875ff;
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-decoration-color: #0875ff;
}

/* 自定义复选框：默认白底、浅灰边框、圆角 */
.popup-consent input[type="checkbox"] {
    position: relative;
    flex: 0 0 18px;
    width: 18px;
    height: 18px;
    margin-top: 2px;
    border: 2px solid #d7dde7;
    border-radius: 5px;
    outline: none;
    appearance: none;
    -webkit-appearance: none;
    background: #ffffff;
    cursor: pointer;
    transition:
        background-color 0.2s ease,
        border-color 0.2s ease,
        box-shadow 0.2s ease;
}

.popup-consent input[type="checkbox"]:hover {
    border-color: #bfc8d6;
}

.popup-consent input[type="checkbox"]:focus-visible {
    box-shadow: 0 0 0 3px rgba(8, 117, 255, 0.16);
}

/* 勾选后：蓝色圆角方块 */
.popup-consent input[type="checkbox"]:checked {
    border-color: #0875ff;
    background: #0875ff;
}

/* 白色对勾 */
.popup-consent input[type="checkbox"]:checked::after {
    content: "";
    position: absolute;
    top: 2px;
    left: 5px;
    width: 4px;
    height: 8px;
    border-right: 2px solid #ffffff;
    border-bottom: 2px solid #ffffff;
    transform: rotate(45deg);
}

.popup-submit {
    width: 100%;
    height: 52px;
    border: none;
    border-radius: 23px;
    background: #0875ff;
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 14px 34px 0 rgba(8, 117, 255, 0.35);
    transition:
        transform 0.2s ease,
        box-shadow 0.2s ease;
}

.popup-submit:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 14px 28px rgba(27, 119, 255, 0.28);
}

.popup-submit:disabled {
    opacity: 0.72;
    cursor: not-allowed;
    transform: none;
}

.popup-footnote {
    margin-top: 18px;
    color: #687385;
    font-size: 12px;
    line-height: 1.6;
}

.popup-footer-inline {
    margin-top: 3px;
}

.popup-policy-mini {
    position: absolute;
    right: 0;
    bottom: -18px;
    font-size: 11px;
    color: #66727f;
}

/* 隐私弹窗样式 */
.cky-notice-des P:last-child, .cky-preference-content-wrapper p:last-child, 
.cky-cookie-des-table li div:last-child p:last-child, .cky-gpc-wrapper 
.cky-gpc-desc p:last-child {
    margin-bottom: 0 !important;
    text-align: left !important;
    line-height: 24px !important;
}

.cky-consent-bar .cky-notice-des p, .cky-gpc-wrapper .cky-gpc-desc p,
.cky-preference-body-wrapper .cky-preference-content-wrapper p,
.cky-accordion-header-wrapper .cky-accordion-header-des p, 
.cky-cookie-des-table li div:last-child p {
    color: inherit;
    margin-top: 0;
    word-break: break-word;
    text-align: left;
}

.cky-notice .cky-title {
    color: #dddddd !important;
    font-weight: 700 !important;
    font-size: 18px !important;
    line-height: 24px !important;
    margin: 0 0 12px 0 !important;
    overflow-wrap: break-word !important;
    text-align: left !important;

}

@media (min-width: 1600px) {
    .hero-copy {
        margin-left: 72px;
    }

    .hero-first-image {
        object-position: center center;
    }
}

.site-footer {
    color: rgba(149, 158, 173, 1);
    text-align: right;
    padding: 22px 16px;
    font-size: 12px;
}

.site-footer a {
    color: rgba(149, 158, 173, 1);
}

@media (max-width: 1100px) {
    .product-sketch {
        width: min(100%, 390px);
        max-height: 330px;
    }

    .hero-content {
        width: calc(100% - 48px);
    }

    .hero-copy {
        margin-left: 28px;
    }

    .hero-title {
        font-size: 42px;
    }

    .content-section {
        width: calc(100% - 48px);
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .popup-anchor {
        min-height: 0;
    }

    .subscribe-popup {
        position: relative;
        max-width: 420px;
    }
}

@media (max-width: 768px) {

    .hero {
        aspect-ratio: auto;
        min-height: 500px;
    }

    .hero-track,
    .hero-slide,
    .hero-content {
        min-height: 500px;
    }

    .hero-content {
        padding: 58px 0 46px;
    }

    .hero-copy {
        margin-left: 8px;
        max-width: 290px;
    }

    .hero-kicker {
        font-size: 30px;
    }

    .hero-title {
        font-size: 27px;
    }

    .hero-btn {
        min-width: 150px;
        height: 42px;
        font-size: 13px;
    }

    .hero-first-image {
        object-position: center top;
    }

    .hero-arrow--prev {
        left: 14px;
    }

    .hero-arrow--next {
        right: 14px;
    }

    .content-section {
        width: calc(100% - 24px);
        padding: 56px 0 48px;
    }

    .popup-anchor {
        min-height: 300px;
    }

    .product-sketch {
        width: min(100%, 330px);
        max-height: 280px;
    }

    .philosophy-title {
        font-size: 40px;
    }

    .philosophy-text {
        font-size: 16px;
    }

    .subscribe-popup {
        max-width: none;
    }

    .subscribe-popup.centered-mode {
        width: min(92vw, 420px);
        padding: 20px 16px 18px;
    }
}

/*
 * 第一张 Banner 的 logo 已经包含在 1440 × 630 的图片中。
 * 让文字层与图片使用同一个等比例设计画布，避免不同屏幕下
 * 图片居中缩放，而文字仍按 1280px 容器定位造成左右错位。
 */
.hero-slide--first .hero-content {
    width: min(100%, 1462.857px);
}

.hero-slide--first .hero-copy {
    margin-left: 10.625%;
}
/* =========================================================
   Latest responsive Banner layout
   - The dark Banner background spans the full viewport width.
   - The 1440 × 630 artwork remains centered at its native ratio.
   - On screens wider than 1440px, only the outer dark background grows.
   - On narrower desktop screens, the complete artwork scales down together.
   ========================================================= */
.hero {
    width: 100%;
    max-width: none;
    height: min(630px, 43.75vw);
    min-height: 0;
    margin: 0;
    aspect-ratio: auto;
    background: #020812;
}

.hero-track,
.hero-slide {
    width: 100%;
    height: 100%;
    min-height: 0;
}

.hero-slide--first::before {
    background: none;
}

.hero-first-image-wrap {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    right: auto;
    width: min(1440px, 100%);
    height: 100%;
    transform: translateX(-50%);
    background: #020812;
}

.hero-first-image {
    width: 100%;
    height: 100%;
    object-fit: fill;
    object-position: center;
}

.hero-content,
.hero-slide--first .hero-content {
    width: min(1440px, 100%);
    height: 100%;
    min-height: 0;
    margin: 0 auto;
    padding: 0;
    justify-content: center;
}

.hero-copy,
.hero-slide--first .hero-copy {
    width: min(520px, 42%);
    max-width: 520px;
    margin-left: 10.625%;
    transform: translateY(8px);
}

.hero-kicker {
    margin-bottom: 14px;
    font-size: clamp(51px, 2.05vw, 42px);
    line-height: 1.1;
}

.hero-title {
    font-size: clamp(45px, 1.85vw, 38px);
    line-height: 1.16;
}

.hero-title .accent {
    margin-top: 5px;
}

.hero-btn {
    min-width: 178px;
    height: 46px;
    margin-top: 24px;
    padding: 12px 24px;
    font-size: 15px;
}

.hero-arrow {
    top: 50%;
    width: 42px;
    height: 42px;
    margin-top: -21px;
}

.hero-arrow--prev {
    left: 26px;
}

.hero-arrow--next {
    right: 26px;
}

/* Standard notebook / smaller desktop screens. */
@media (max-width: 1100px) {
    .hero {
        height: 43.75vw;
    }

    .hero-content,
    .hero-slide--first .hero-content {
        width: 100%;
        padding: 0;
    }

    .hero-copy,
    .hero-slide--first .hero-copy {
        width: 44%;
        max-width: 430px;
        margin-left: 8%;
        transform: none;
    }

    .hero-kicker {
        margin-bottom: 10px;
        font-size: clamp(27px, 3.1vw, 34px);
    }

    .hero-title {
        font-size: clamp(25px, 2.8vw, 32px);
    }

    .hero-btn {
        min-width: 156px;
        height: 42px;
        margin-top: 20px;
        padding: 10px 20px;
        font-size: 13px;
    }
}

/* Tablet and phone fallback: keep the artwork useful without squeezing text. */
@media (max-width: 768px) {
    .hero {
        height: 520px;
        min-height: 520px;
    }

    .hero-track,
    .hero-slide,
    .hero-content,
    .hero-slide--first .hero-content {
        height: 520px;
        min-height: 520px;
    }

    .hero-first-image-wrap {
        width: 100%;
    }

    .hero-first-image {
        object-fit: cover;
        object-position: 64% center;
    }

    .hero-copy,
    .hero-slide--first .hero-copy {
        width: 56%;
        max-width: 320px;
        margin-left: 7%;
    }

    .hero-kicker {
        font-size: clamp(27px, 7vw, 32px);
    }

    .hero-title {
        font-size: clamp(24px, 6.2vw, 29px);
    }

    .hero-arrow--prev {
        left: 12px;
    }

    .hero-arrow--next {
        right: 12px;
    }
}