/* Player 项目介绍：仅作用于此页面与截图预览。 */
.player-page {
    --player-ink: #142838;
    --player-muted: #536575;
    --player-blue: #087ba8;
    --player-border: #dce5ec;
    min-width: 0;
    color: var(--player-ink);
}
.player-page figure, .player-page dl, .player-page dd { margin: 0; }
.player-page p { line-height: 1.85; }
.player-page h2 { font-size: 28px; font-weight: 700; line-height: 1.4; letter-spacing: -.6px; }
.player-page a:focus-visible, .player-page summary:focus-visible,
.player-lightbox a:focus-visible, .player-lightbox button:focus-visible { outline: 3px solid #16b6ee; outline-offset: 5px; }
.player-section { margin-top: 48px; scroll-margin-top: 84px; }
.player-eyebrow { color: #4b758d; font-size: 11px; font-weight: 700; letter-spacing: 2px; }
.player-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 1fr);
    gap: 28px 48px;
    align-items: center;
    padding: 38px 44px 0;
    overflow: hidden;
    border: 1px solid #243c50;
    border-radius: 16px;
    background: radial-gradient(ellipse at 95% 30%, #10394b 0%, #0c1c2d 45%, #0b1523 75%);
    color: #f1f6fa;
}
.player-brand { display: flex; align-items: center; gap: 14px; }
.player-brand img { width: 50px; height: 50px; border: 1px solid #2c445a; border-radius: 12px; }
.player-brand .player-eyebrow { color: #72d1f2; font-size: 10px; letter-spacing: 2.4px; }
.player-brand p + p { font-size: 15px; letter-spacing: 1px; }
.player-hero h1 { margin: 25px 0 18px; font-size: clamp(36px, 4vw, 49px); font-weight: 750; line-height: 1.23; letter-spacing: -1px; }
.player-hero-intro { max-width: 470px; color: #becddb; font-size: 15px; }
.player-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 25px; }
.player-button { display: inline-flex; align-items: center; justify-content: center; gap: 16px; min-height: 46px; padding: 11px 20px; border: 1px solid transparent; border-radius: 7px; font-size: 14px; font-weight: 600; line-height: 1.5; text-decoration: none; }
.player-button-primary { color: #062033; background: #36c6f1; }
.player-button-primary:hover { color: #062033; background: #7adfff; }
.player-button-ghost { color: #e0ecf4; border-color: #526b7f; }
.player-button-ghost:hover { color: #fff; background: #1c3549; }
.player-button-outline { color: #136d91; border-color: #99bccc; background: #fff; }
.player-button-outline:hover { color: #064565; background: #edf8fc; border-color: #3f8ba9; }
.player-hero-note { margin-top: 17px; font-size: 12px; color: #a5bacb; }
.player-hero-note i { margin-right: 7px; }
.player-hero-visual { min-width: 0; padding-top: 4px; }
.player-hero-phones { display: flex; align-items: flex-start; justify-content: center; gap: 20px; padding: 0 8px 32px; }
.player-image-link { display: block; position: relative; cursor: zoom-in; background: #0c1118; }
.player-image-link img { display: block; width: 100%; height: auto; }
.player-phone { overflow: hidden; border: 5px solid #263646; border-radius: 23px; box-shadow: 0 14px 28px rgba(2, 12, 25, .18); }
.player-hero-phones .player-phone { flex: 0 1 172px; min-width: 0; }
.player-hero-phones .player-phone:nth-child(2) { margin-top: 32px; }
.player-hero-visual > p { text-align: center; color: #91aebf; font-size: 11px; letter-spacing: 1px; }
.player-highlights { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); padding: 23px 0; border-top: 1px solid #2d4458; }
.player-highlights > div { padding-left: 24px; border-left: 1px solid #2d4458; }
.player-highlights > div:first-child { padding-left: 0; border-left: 0; }
.player-highlights dt { font-size: 17px; font-weight: 600; line-height: 1.5; }
.player-highlights dt i { margin-right: 9px; color: #57c8eb; }
.player-highlights dd { margin-top: 6px; color: #a5bacb; font-size: 12px; line-height: 1.75; }
.player-jump-nav { display: flex; flex-wrap: wrap; gap: 8px 30px; padding: 16px 0; border-bottom: 1px solid var(--player-border); }
.player-jump-nav a { display: inline-flex; align-items: center; min-height: 38px; font-size: 14px; color: var(--player-muted); }
.player-jump-nav a:hover { color: var(--player-blue); }
.player-section-heading { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: 24px; }
.player-section-heading h2 { margin-top: 8px; }
.player-section-heading > p { color: var(--player-muted); font-size: 14px; }
.player-section-number { display: block; font-size: 10px; letter-spacing: 1.6px; font-weight: 600; color: #5c778c; }
.player-signature-grid { display: grid; grid-template-columns: minmax(0, 1.18fr) minmax(0, .82fr); gap: 18px; }
.player-signature-card { min-width: 0; padding: 32px; overflow: hidden; border: 1px solid var(--player-border); border-radius: 12px; background: #fff; }
.player-signature-card h3 { margin: 13px 0 16px; font-size: 27px; font-weight: 700; line-height: 1.35; letter-spacing: -.4px; }
.player-signature-card > p { color: var(--player-muted); font-size: 14px; }
.player-signature-dolby { position: relative; border-color: #294d61; background: radial-gradient(circle at 100% 0, rgba(42, 147, 179, .24), transparent 42%), #0c1c2d; color: #f1f6fa; }
.player-signature-dolby .player-section-number { color: #63cbed; }
.player-signature-dolby > p { color: #bdced9; }
.player-route { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; margin: 22px 0 18px; }
.player-route span { padding: 7px 10px; border: 1px solid #3d6277; border-radius: 5px; background: rgba(18, 52, 69, .72); color: #e9f7fc; font-size: 11px; }
.player-route i { color: #64c9ea; }
.player-route b { color: #7291a2; font-size: 10px; font-weight: 500; }
.player-signature-dolby .player-capability-note { padding-top: 16px; border-top: 1px solid #29475a; color: #8faab9; font-size: 11px; line-height: 1.75; }
.player-engine-list { padding: 0; margin: 22px 0 0; list-style: none; }
.player-engine-list li { padding: 14px 0; border-top: 1px solid #e2eaf0; }
.player-engine-list strong { display: block; margin-bottom: 4px; color: #11789f; font-size: 14px; }
.player-engine-list span { display: block; color: var(--player-muted); font-size: 12px; line-height: 1.75; }
.player-distinct-list { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; margin-top: 18px; overflow: hidden; border: 1px solid var(--player-border); border-radius: 10px; background: var(--player-border); }
.player-distinct-list > div { padding: 20px; background: #f8fafc; }
.player-distinct-list strong { display: block; margin-bottom: 7px; color: var(--player-ink); font-size: 14px; }
.player-distinct-list span { display: block; color: var(--player-muted); font-size: 12px; line-height: 1.75; }
.player-playback { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 32px; align-items: center; padding: 28px; border: 1px solid var(--player-border); border-radius: 12px; background: #fff; }
.player-wide-screen { overflow: hidden; border: 6px solid #263646; border-radius: 12px; }
.player-image-zoom { position: absolute; bottom: 10px; right: 10px; padding: 6px 9px; font-size: 11px; border-radius: 5px; background: rgba(0, 12, 20, .85); color: #fff; }
.player-page figcaption { padding-top: 12px; font-size: 12px; line-height: 1.7; color: var(--player-muted); text-align: center; }
.player-playback-copy h3 { margin: 12px 0 14px; font-size: 23px; font-weight: 700; line-height: 1.4; }
.player-playback-copy > p { color: var(--player-muted); font-size: 14px; }
.player-feature-list { padding: 0; margin: 21px 0 0; list-style: none; }
.player-feature-list li { margin-top: 16px; }
.player-feature-list strong { display: block; font-size: 15px; font-weight: 600; margin-bottom: 5px; }
.player-feature-list span { display: block; color: var(--player-muted); font-size: 14px; line-height: 1.85; }
.player-story { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 56px; align-items: center; padding: 38px; border: 1px solid var(--player-border); border-radius: 12px; background: #fff; }
.player-story .player-section-number { margin-top: 16px; }
.player-story h2 { margin: 15px 0 18px; font-size: 32px; }
.player-story-intro { color: var(--player-muted); font-size: 15px; }
.player-screenshot-pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; align-items: start; padding: 20px 10px; border-radius: 12px; background: #edf4f9; }
.player-screenshot-pair figure:nth-child(2) { margin-top: 32px; }
.player-screenshot-pair .player-phone { border-width: 4px; border-radius: 18px; }
.player-numbered-list { list-style: none; margin: 24px 0; padding: 0; }
.player-numbered-list li { display: flex; gap: 14px; margin-top: 18px; }
.player-numbered-list > li > span { flex-shrink: 0; padding-top: 2px; color: #1380aa; font-size: 12px; font-weight: 600; }
.player-numbered-list h3 { font-size: 15px; font-weight: 600; line-height: 1.6; margin-bottom: 4px; }
.player-numbered-list p { color: var(--player-muted); font-size: 13px; }
.player-small-note { padding-top: 16px; border-top: 1px solid #e2eaf0; color: #627080; font-size: 12px; }
.player-story-reverse .player-story-copy { order: 2; }
.player-story-reverse .player-screenshot-pair { background: #eff3f8; }
.player-source-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.player-source-tags span { padding: 5px 9px; border: 1px solid #d9e4eb; border-radius: 4px; font-size: 11px; color: #42677b; background: #f4f8fa; }
.player-start { padding: 36px; border: 1px solid #cddfea; border-radius: 12px; background: #eaf3f9; }
.player-platform { font-size: 13px; color: #42677b; white-space: nowrap; }
.player-platform i { margin-right: 7px; }
.player-start-steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 36px; list-style: none; padding: 0; margin: 26px 0; }
.player-start-steps > li > span { display: block; color: #3686a6; font-size: 13px; letter-spacing: 1px; margin-bottom: 10px; }
.player-start-steps h3 { font-size: 17px; line-height: 1.5; font-weight: 600; margin-bottom: 9px; }
.player-start-steps p { color: var(--player-muted); font-size: 14px; }
.player-device-line { display: flex; align-items: center; gap: 20px; padding-top: 24px; border-top: 1px solid #cddfea; }
.player-device-line > i { font-size: 36px; color: #45839f; }
.player-device-line strong { display: block; font-size: 15px; font-weight: 600; }
.player-device-line span { display: block; margin-top: 5px; color: var(--player-muted); font-size: 13px; }
.player-about { padding: 36px; background: #fff; border: 1px solid var(--player-border); border-radius: 12px; }
.player-faq details { border-top: 1px solid #e1e8ee; }
.player-faq summary { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 19px 2px; list-style: none; cursor: pointer; font-size: 15px; font-weight: 600; }
.player-faq summary::-webkit-details-marker { display: none; }
.player-faq summary::after { content: '+'; font-size: 23px; color: #63869e; font-weight: 400; }
.player-faq details[open] summary::after { content: '−'; }
.player-faq details > p { padding: 0 28px 20px 2px; color: var(--player-muted); font-size: 14px; }
.player-feedback { display: flex; justify-content: space-between; align-items: center; gap: 24px; padding: 28px 0; border-top: 1px solid #e1e8ee; }
.player-feedback h3 { font-size: 19px; font-weight: 600; line-height: 1.5; margin-bottom: 5px; }
.player-feedback p { font-size: 14px; color: var(--player-muted); }
.player-feedback .player-button { flex-shrink: 0; }
.player-image-note { font-size: 12px; color: #637484; }
.player-preview-open { overflow: hidden; }
.player-lightbox { width: min(1180px, calc(100% - 32px)); max-width: none; max-height: 92vh; padding: 0; margin: auto; border: 1px solid #37556b; border-radius: 10px; background: #0b1523; color: #f0f6fb; }
.player-lightbox::backdrop { background: rgba(2, 8, 17, .88); }
.player-lightbox-toolbar { display: flex; align-items: center; gap: 16px; padding: 12px 16px; border-bottom: 1px solid #2b4255; }
.player-lightbox-toolbar p { flex: 1; font-size: 14px; line-height: 1.5; }
.player-lightbox-toolbar a { flex-shrink: 0; font-size: 13px; color: #87dafa; }
.player-lightbox-toolbar button { display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; width: 40px; height: 40px; color: #fff; border: 1px solid #526b7f; border-radius: 6px; background: transparent; cursor: pointer; }
.player-lightbox > img { display: block; width: 100%; max-height: calc(92vh - 78px); object-fit: contain; }
@media (max-width: 991px) {
    .player-hero { padding: 30px 28px 0; gap: 24px; }
    .player-hero-phones { gap: 12px; padding-right: 0; padding-left: 0; }
    .player-hero-phones .player-phone { border-width: 3px; border-radius: 15px; }
    .player-hero h1 { font-size: 38px; }
    .player-hero-intro { font-size: 14px; }
    .player-hero-note { font-size: 11px; }
    .player-actions { gap: 10px; }
    .player-button { padding: 11px 15px; }
    .player-highlights > div { padding-left: 16px; }
    .player-highlights dt { font-size: 15px; }
    .player-highlights dt i { display: none; }
    .player-section-heading { display: block; }
    .player-section-heading > p, .player-platform { display: block; margin-top: 10px; }
    .player-signature-grid { grid-template-columns: minmax(0, 1fr); }
    .player-distinct-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .player-playback { grid-template-columns: minmax(0, 1fr); }
    .player-playback-copy .player-feature-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
    .player-story { padding: 28px; gap: 30px; }
    .player-story h2 { font-size: 28px; }
    .player-screenshot-pair { gap: 12px; padding: 14px 8px; }
    .player-screenshot-pair .player-phone { border-width: 3px; border-radius: 13px; }
    .player-start, .player-about { padding: 28px; }
}
@media (max-width: 767px) {
    .player-section { margin-top: 34px; scroll-margin-top: 76px; }
    .player-page h2 { font-size: 24px; }
    .player-hero { grid-template-columns: minmax(0, 1fr); padding: 25px 22px 0; gap: 20px; }
    .player-hero h1 { font-size: 28px; margin-top: 21px; }
    .player-hero h1 br { display: none; }
    .player-hero-intro { max-width: none; }
    .player-actions .player-button { flex: 1 1 auto; padding: 11px 13px; }
    .player-hero-phones { gap: 20px; max-width: 280px; margin: 0 auto; padding-bottom: 20px; }
    .player-hero-phones .player-phone { flex-basis: 110px; }
    .player-hero-phones .player-phone:nth-child(2) { margin-top: 24px; }
    .player-hero-visual > p { font-size: 10px; }
    .player-highlights { padding: 20px 0; gap: 12px; }
    .player-highlights > div { padding-left: 10px; }
    .player-highlights dt { font-size: 13px; }
    .player-highlights dd { display: none; }
    .player-jump-nav { justify-content: space-between; gap: 4px; padding: 12px 0; }
    .player-jump-nav a { font-size: 12px; min-height: 40px; }
    .player-section-heading { margin-bottom: 20px; }
    .player-signature-card { padding: 24px 20px; }
    .player-signature-card h3 { font-size: 24px; }
    .player-route { gap: 6px; }
    .player-route i { display: none; }
    .player-distinct-list { grid-template-columns: minmax(0, 1fr); }
    .player-playback { padding: 18px; gap: 24px; }
    .player-wide-screen { border-width: 4px; border-radius: 9px; }
    .player-playback-copy h3 { font-size: 22px; }
    .player-playback-copy .player-feature-list { display: block; }
    .player-playback-copy .player-feature-list li { margin-top: 16px; }
    .player-story { grid-template-columns: minmax(0, 1fr); gap: 26px; padding: 24px 20px; }
    .player-story h2 { font-size: 28px; }
    .player-story-reverse .player-story-copy { order: 0; }
    .player-screenshot-pair { gap: 14px; padding: 14px 10px; }
    .player-screenshot-pair figure:nth-child(2) { margin-top: 24px; }
    .player-page figcaption { font-size: 11px; }
    .player-start, .player-about { padding: 24px 20px; }
    .player-start-steps { grid-template-columns: minmax(0, 1fr); gap: 24px; }
    .player-start-steps > li > span { margin-bottom: 7px; }
    .player-feedback { display: block; }
    .player-feedback .player-button { margin-top: 18px; }
    .player-faq summary { font-size: 14px; }
    .player-lightbox-toolbar { flex-wrap: wrap; gap: 8px; padding: 10px; }
    .player-lightbox-toolbar p { flex-basis: calc(100% - 48px); font-size: 12px; }
    .player-lightbox-toolbar a { order: 3; font-size: 12px; }
    .player-lightbox > img { max-height: calc(92vh - 115px); }
}
@media (max-width: 359px) {
    .player-hero { padding-right: 18px; padding-left: 18px; }
    .player-hero h1 { font-size: 24px; }
    .player-brand { gap: 10px; }
    .player-brand p + p { font-size: 14px; }
    .player-highlights { gap: 8px; }
    .player-highlights dt { font-size: 12px; }
    .player-highlights > div { padding-left: 8px; }
    .player-jump-nav a { font-size: 11px; }
    .player-story { padding-right: 16px; padding-left: 16px; }
}
@media (prefers-reduced-motion: reduce) {
    html:has(.player-page) { scroll-behavior: auto; }
    .player-page a { transition: none; }
}