/* ===== Mobile polish layer · QING Portfolio =====
   Desktop styles stay intact. This file only refines tablet/mobile screens. */

.nav-mobile-actions {
  display: none;
}

@media (max-width: 920px) {
  :root {
    --pad-x: clamp(22px, 5.2vw, 44px);
  }

  .nav-inner {
    gap: 18px;
  }

  .footer {
    padding-top: 54px;
    padding-bottom: 32px;
  }
}

@media (max-width: 640px) {
  :root {
    --pad-x: clamp(20px, 5.6vw, 28px);
  }

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

  body {
    letter-spacing: 0;
    text-size-adjust: 100%;
    -webkit-text-size-adjust: 100%;
  }

  a,
  button {
    -webkit-tap-highlight-color: transparent;
  }

  .reveal {
    transform: translateY(22px);
  }

  .section {
    padding: 76px var(--pad-x);
  }

  .section.off,
  .section.dark {
    padding-top: 78px;
    padding-bottom: 82px;
  }

  .eyebrow {
    font-size: 10px;
    letter-spacing: 0.18em;
    line-height: 1.7;
    margin-bottom: 12px;
  }

  .h-display,
  .h-1,
  .h-2,
  .h-3 {
    letter-spacing: -0.012em;
  }

  .h-display { font-size: clamp(40px, 13vw, 58px); line-height: 1.06; }
  .h-1 { font-size: clamp(30px, 9vw, 42px); line-height: 1.12; }
  .h-2 { font-size: clamp(26px, 7.6vw, 34px); line-height: 1.18; }
  .h-3 { font-size: clamp(19px, 5.2vw, 24px); line-height: 1.34; }

  .body-lg,
  .body {
    font-size: 13.5px;
    line-height: 1.82;
  }

  .link-arrow {
    font-size: 13px;
    padding-bottom: 3px;
  }

  /* Mobile navigation: premium, not crowded */
  .nav {
    top: 0;
    left: 0;
    right: 0;
    height: 52px;
    border-left: 0;
    border-right: 0;
    box-shadow: none;
  }

  .nav-inner {
    padding: 0 max(var(--pad-x), env(safe-area-inset-left)) 0 max(var(--pad-x), env(safe-area-inset-left));
    gap: 10px;
  }

  .nav-logo {
    font-size: 13px;
    letter-spacing: 0.13em;
    max-width: 54vw;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .nav-links {
    display: none !important;
  }

  .nav-mobile-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 16px;
    list-style: none;
    font-family: var(--font-en);
    font-size: 11px;
    line-height: 1;
    letter-spacing: 0.13em;
    text-transform: uppercase;
    white-space: nowrap;
  }

  .nav-mobile-actions a {
    opacity: 0.82;
    padding: 12px 0;
  }

  .nav-mobile-actions a:hover {
    opacity: 1;
  }

  /* Home hero */
  .hero {
    min-height: 84svh;
    padding: 92px var(--pad-x) 62px;
    align-items: flex-end;
    text-align: left;
  }

  .hero-inner {
    max-width: 100%;
    text-align: left;
  }

  .hero-tag {
    font-size: 9px;
    letter-spacing: 0.22em;
    line-height: 1.8;
    margin-bottom: 34px;
    color: rgba(255, 255, 255, 0.42);
  }

  .hero h1 {
    font-size: clamp(54px, 18vw, 76px);
    letter-spacing: 0.08em;
    line-height: 0.98;
    margin-bottom: 24px;
  }

  .hero-sub {
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 30px;
  }

  .hero-sub-en {
    font-size: 10px;
    letter-spacing: 0.42em;
  }

  .hero-sub-rule {
    display: none;
  }

  .hero-sub-cn {
    width: 100%;
    font-size: 12px;
    line-height: 1.75;
    color: rgba(255, 255, 255, 0.58);
  }

  .hero-desc {
    justify-content: flex-start;
    align-items: flex-start;
    flex-direction: column;
    gap: 9px;
    margin-bottom: 28px;
    font-size: 12px;
    line-height: 1.6;
  }

  .hero-desc-item {
    padding: 0;
    border-right: 0 !important;
  }

  .hero-meta {
    justify-content: flex-start;
    flex-direction: column;
    gap: 8px;
    font-size: 10px;
    line-height: 1.75;
    text-align: left;
    color: rgba(255, 255, 255, 0.38);
  }

  .hero-meta strong {
    display: block;
    margin: 0 0 2px;
    color: rgba(255, 255, 255, 0.62);
  }

  .hero-scroll {
    display: none;
  }

  .strip {
    padding: 15px 0;
  }

  .strip-track {
    gap: 38px;
    font-size: 10px;
    letter-spacing: 0.2em;
  }

  .strip-track span {
    gap: 38px;
  }

  /* Mobile works directory */
  .fan-section {
    padding: 70px 0 86px;
  }

  .fan-head {
    text-align: left;
    margin-bottom: 40px;
  }

  .fan-head .body-lg {
    margin-left: 0 !important;
    margin-right: 0 !important;
    max-width: 100% !important;
    font-size: 13.5px !important;
    line-height: 1.84 !important;
  }

  .fan-stage {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
    perspective: none;
    padding: 0 var(--pad-x);
  }

  .fan-card,
  .fan-card:first-child {
    width: 100%;
    height: 112px;
    margin-left: 0;
    border-radius: 0 !important;
    transform: none !important;
    box-shadow: none !important;
    display: grid;
    grid-template-columns: 0.94fr 1.06fr;
  }

  .fan-card:hover {
    transform: none !important;
  }

  .fan-card-inner {
    min-height: 0;
    align-items: flex-end;
    justify-content: flex-start;
    padding: 17px;
  }

  .fan-card-foot {
    border-top: 0 !important;
    border-left: 1px solid rgba(255, 255, 255, 0.08);
    padding: 18px 18px 17px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
  }

  .fan-card.light .fan-card-foot {
    border-left-color: rgba(0, 0, 0, 0.08);
  }

  .fan-card-img-label {
    text-align: left;
    font-size: 8px;
    line-height: 1.65;
  }

  .fan-no {
    font-size: 10px;
    margin-bottom: 8px;
  }

  .fan-card-foot strong {
    font-size: 14px;
    line-height: 1.35;
  }



  /* Mobile home directory: fixed alternating sequence — white / black / white / black / white / black / white */
  .fan-stage .fan-card:nth-child(odd) {
    background: #f1f1f2 !important;
    color: #0f0f10 !important;
    border: 1px solid rgba(0, 0, 0, 0.075) !important;
  }

  .fan-stage .fan-card:nth-child(even) {
    background: #101012 !important;
    color: #ffffff !important;
    border: 1px solid rgba(255, 255, 255, 0.085) !important;
  }

  .fan-stage .fan-card:nth-child(odd) .fan-card-inner {
    background-image: repeating-linear-gradient(
      45deg, transparent, transparent 20px,
      rgba(0, 0, 0, 0.018) 20px, rgba(0, 0, 0, 0.018) 21px) !important;
  }

  .fan-stage .fan-card:nth-child(even) .fan-card-inner {
    background-image: repeating-linear-gradient(
      45deg, transparent, transparent 20px,
      rgba(255, 255, 255, 0.024) 20px, rgba(255, 255, 255, 0.024) 21px) !important;
  }

  .fan-stage .fan-card:nth-child(odd) .fan-card-foot {
    border-left-color: rgba(0, 0, 0, 0.075) !important;
  }

  .fan-stage .fan-card:nth-child(even) .fan-card-foot {
    border-left-color: rgba(255, 255, 255, 0.085) !important;
  }

  .fan-stage .fan-card:nth-child(odd) .fan-card-img-label,
  .fan-stage .fan-card:nth-child(odd) .fan-no {
    color: rgba(0, 0, 0, 0.58) !important;
  }

  .fan-stage .fan-card:nth-child(even) .fan-card-img-label,
  .fan-stage .fan-card:nth-child(even) .fan-no {
    color: rgba(255, 255, 255, 0.56) !important;
  }

  .fan-stage .fan-card:nth-child(odd) .fan-card-foot strong {
    color: #0f0f10 !important;
  }

  .fan-stage .fan-card:nth-child(even) .fan-card-foot strong {
    color: rgba(255, 255, 255, 0.93) !important;
  }

  .sec-head {
    display: block;
    margin-bottom: 30px;
  }

  .sec-head [style*="text-align:right"],
  .sec-head [style*="text-align: right"] {
    text-align: left !important;
    max-width: 100% !important;
    margin-top: 18px;
  }

  .tools-grid {
    margin-top: 28px;
  }

  .tg-col {
    padding: 22px 0 24px !important;
  }

  .tg-cat {
    font-size: 9px;
    margin-bottom: 14px;
  }

  .tg-tag {
    font-size: 11.5px;
    padding: 6px 11px;
  }

  .process-strip {
    margin: 28px 0 0;
  }

  .ps-item,
  .ps-item:not(:first-child) {
    padding: 24px 0 !important;
    border-right: 0;
  }

  .ps-item:not(:last-child) {
    border-bottom: 1px solid var(--gray-3);
  }

  .ps-cn {
    font-size: 15px;
  }

  .ps-desc {
    font-size: 13px;
    line-height: 1.72;
  }

  .contact-avail {
    display: flex;
    width: fit-content;
    max-width: 100%;
    padding: 8px 12px;
    font-size: 10px;
    line-height: 1.5;
    letter-spacing: 0.11em;
  }

  .contact-row {
    margin-top: 30px;
  }

  .cr-value {
    font-size: 14px;
    line-height: 1.7;
    word-break: break-word;
  }

  .footer {
    padding: 48px var(--pad-x) 34px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom {
    margin-top: 36px;
    flex-direction: column;
    gap: 8px;
  }
}

/* ===== Product pages · tablet refinement ===== */
@media (max-width: 920px) {
  .kv-hero,
  .robot-hero,
  .speaker-hero,
  .humanoid-hero,
  .air-hero,
  .headphone-hero,
  .ar-hero {
    min-height: 88svh;
  }

  .kv-placeholder,
  .robot-placeholder,
  .speaker-placeholder,
  .humanoid-placeholder,
  .air-placeholder,
  .hp-placeholder,
  .ar-placeholder {
    max-width: 100%;
  }
}

/* ===== Product pages · premium phone layout ===== */
@media (max-width: 640px) {
  .kv-hero,
  .robot-hero,
  .speaker-hero,
  .humanoid-hero,
  .air-hero,
  .headphone-hero,
  .ar-hero {
    min-height: 84svh;
    padding: 92px var(--pad-x) 58px !important;
    align-items: flex-end !important;
    justify-content: flex-end !important;
    text-align: left !important;
  }

  .kv-hero-inner,
  .robot-hero-inner,
  .speaker-hero-inner,
  .humanoid-hero-inner,
  .air-hero-inner,
  .headphone-hero-inner,
  .ar-hero-inner {
    width: 100% !important;
    max-width: 100% !important;
    text-align: left !important;
    margin: 0 !important;
  }

  .kv-kicker,
  .robot-kicker,
  .speaker-kicker,
  .humanoid-kicker,
  .air-kicker,
  .hp-kicker,
  .ar-kicker {
    font-size: 9px !important;
    letter-spacing: 0.22em !important;
    line-height: 1.8 !important;
    margin-bottom: 28px !important;
  }

  .kv-hero h1,
  .robot-hero h1,
  .speaker-hero h1,
  .humanoid-hero h1,
  .air-hero h1,
  .headphone-hero h1,
  .ar-hero h1 {
    font-size: clamp(38px, 12.4vw, 54px) !important;
    line-height: 1.12 !important;
    letter-spacing: 0.02em !important;
    margin-bottom: 16px !important;
    text-align: left !important;
  }

  .kv-subtitle,
  .robot-subtitle,
  .speaker-subtitle,
  .humanoid-subtitle,
  .air-subtitle,
  .hp-subtitle,
  .ar-subtitle {
    font-size: 11px !important;
    line-height: 1.65 !important;
    letter-spacing: 0.08em !important;
    margin-bottom: 24px !important;
    text-align: left !important;
  }

  .kv-intro,
  .robot-intro,
  .speaker-intro,
  .humanoid-intro,
  .air-intro,
  .hp-intro,
  .ar-intro {
    max-width: 100% !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
    font-size: 13px !important;
    line-height: 1.86 !important;
    letter-spacing: 0.02em !important;
    text-align: left !important;
  }

  .kv-meta,
  .robot-meta,
  .speaker-meta,
  .humanoid-meta,
  .air-meta,
  .hp-meta,
  .ar-meta {
    margin-top: 30px !important;
    padding-top: 22px !important;
    grid-template-columns: 1fr 1fr !important;
    gap: 17px 18px !important;
    max-width: 100% !important;
    font-size: 12px !important;
    line-height: 1.55 !important;
    text-align: left !important;
  }

  .kv-meta strong,
  .robot-meta strong,
  .speaker-meta strong,
  .humanoid-meta strong,
  .air-meta strong,
  .hp-meta strong,
  .ar-meta strong {
    font-size: 9px !important;
    line-height: 1.4 !important;
    margin-bottom: 5px !important;
  }

  .kv-section,
  .robot-section,
  .speaker-section,
  .humanoid-section,
  .air-section,
  .hp-section,
  .ar-section {
    padding: 74px var(--pad-x) !important;
  }

  .kv-section-head,
  .robot-section-head,
  .speaker-section-head,
  .humanoid-section-head,
  .air-section-head,
  .hp-section-head,
  .ar-section-head,
  .robot-system-head,
  .speaker-system-head,
  .humanoid-system-head,
  .air-system-head,
  .hp-system-head,
  .ar-system-head {
    display: grid !important;
    grid-template-columns: 1fr !important;
    gap: 16px !important;
    align-items: start !important;
    margin-bottom: 32px !important;
    padding-top: 0 !important;
  }

  .kv-section-title,
  .robot-section-title,
  .speaker-section-title,
  .humanoid-section-title,
  .air-section-title,
  .hp-section-title,
  .ar-section-title,
  .kv-summary h2,
  .robot-summary h2,
  .speaker-summary h2,
  .humanoid-summary h2,
  .air-summary h2,
  .hp-summary h2,
  .ar-summary h2,
  .kv-next-name,
  .robot-next-name,
  .speaker-next-name,
  .humanoid-next-name,
  .air-next-name,
  .hp-next-name,
  .ar-next-name {
    font-size: clamp(24px, 7.3vw, 32px) !important;
    line-height: 1.22 !important;
    letter-spacing: -0.006em !important;
  }

  .kv-desc,
  .robot-desc,
  .speaker-desc,
  .humanoid-desc,
  .air-desc,
  .hp-desc,
  .ar-desc,
  .robot-system-text,
  .speaker-system-text,
  .humanoid-system-text,
  .air-system-text,
  .hp-system-text,
  .ar-system-text,
  .kv-caption p,
  .robot-caption p,
  .speaker-caption p,
  .humanoid-caption p,
  .air-caption p,
  .hp-caption p,
  .ar-caption p,
  .kv-summary p,
  .robot-summary p,
  .speaker-summary p,
  .humanoid-summary p,
  .air-summary p,
  .hp-summary p,
  .ar-summary p,
  .robot-card p,
  .speaker-card p,
  .humanoid-card p,
  .air-card p,
  .hp-card p,
  .ar-card p {
    font-size: 13.5px !important;
    line-height: 1.82 !important;
    letter-spacing: 0.01em !important;
  }

  .robot-brand-grid,
  .speaker-brand-grid,
  .humanoid-brand-grid,
  .air-brand-grid,
  .hp-brand-grid,
  .ar-brand-grid,
  .kv-pair,
  .robot-pair,
  .speaker-pair,
  .air-pair,
  .air-feature-pair,
  .humanoid-image-stage,
  .air-story-split,
  .hp-split,
  .ar-split {
    display: grid !important;
    grid-template-columns: 1fr !important;
    gap: 42px !important;
  }

  .robot-card,
  .speaker-card,
  .humanoid-card,
  .air-card,
  .hp-card,
  .ar-card,
  .robot-card:nth-child(even),
  .speaker-card:nth-child(even),
  .humanoid-card:nth-child(even),
  .air-card:nth-child(even),
  .hp-card:nth-child(even),
  .ar-card:nth-child(even) {
    min-height: auto !important;
    padding: 24px 0 !important;
    border-right: 0 !important;
  }

  .robot-focus-panel,
  .speaker-focus-panel,
  .humanoid-focus-panel,
  .air-focus-panel,
  .hp-focus-panel,
  .ar-focus-panel {
    min-height: auto !important;
    grid-template-columns: 1fr !important;
    gap: 18px !important;
    padding: 28px 0 !important;
  }

  .robot-focus-panel strong,
  .speaker-focus-panel strong,
  .humanoid-focus-panel strong,
  .air-focus-panel strong,
  .hp-focus-panel strong,
  .ar-focus-panel strong {
    font-size: clamp(22px, 6.4vw, 28px) !important;
    line-height: 1.28 !important;
  }

  .kv-placeholder,
  .robot-placeholder,
  .speaker-placeholder,
  .humanoid-placeholder,
  .air-placeholder,
  .hp-placeholder,
  .ar-placeholder,
  .hp-story-screen,
  .ar-story-screen,
  .humanoid-story-screen,
  .air-story-split-media,
  .hp-split-screen,
  .ar-split-screen {
    width: 100% !important;
    max-width: 100% !important;
    aspect-ratio: 4 / 5 !important;
    min-height: min(64svh, 620px) !important;
    border-radius: 0 !important;
    overflow: hidden !important;
  }

  .kv-placeholder,
  .speaker-placeholder,
  .air-placeholder.white,
  .ar-placeholder.white,
  .hp-placeholder.white,
  .humanoid-placeholder.white {
    border-color: rgba(0, 0, 0, 0.10) !important;
  }

  .robot-placeholder,
  .hp-placeholder.dark,
  .ar-placeholder.dark,
  .humanoid-placeholder.dark {
    border-color: rgba(255, 255, 255, 0.11) !important;
  }

  .project-image {
    object-fit: cover !important;
  }

  .kv-placeholder::before,
  .robot-placeholder::before,
  .speaker-placeholder::before,
  .humanoid-placeholder::before,
  .air-placeholder::before,
  .hp-placeholder::before,
  .ar-placeholder::before {
    left: 18px !important;
    top: 18px !important;
    max-width: calc(100% - 36px) !important;
    font-size: 9px !important;
    line-height: 1.5 !important;
    letter-spacing: 0.18em !important;
    white-space: normal !important;
  }

  .kv-placeholder::after,
  .robot-placeholder::after,
  .speaker-placeholder::after,
  .humanoid-placeholder::after,
  .air-placeholder::after,
  .hp-placeholder::after,
  .ar-placeholder::after {
    left: 18px !important;
    bottom: 18px !important;
    max-width: calc(100% - 36px) !important;
    font-size: 11px !important;
    line-height: 1.62 !important;
    letter-spacing: 0.02em !important;
    white-space: normal !important;
  }

  .kv-caption,
  .robot-caption,
  .speaker-caption,
  .humanoid-caption,
  .air-caption,
  .hp-caption,
  .ar-caption,
  .robot-tile .robot-caption,
  .speaker-tile .speaker-caption,
  .air-tile .air-caption {
    display: grid !important;
    grid-template-columns: 1fr !important;
    gap: 9px !important;
    padding-top: 16px !important;
  }

  .kv-caption h3,
  .robot-caption h3,
  .speaker-caption h3,
  .humanoid-caption h3,
  .air-caption h3,
  .hp-caption h3,
  .ar-caption h3 {
    font-size: clamp(18px, 5.2vw, 23px) !important;
    line-height: 1.32 !important;
    margin-bottom: 7px !important;
  }

  .kv-num,
  .robot-num,
  .speaker-num,
  .humanoid-num,
  .air-num,
  .hp-num,
  .ar-num {
    font-size: 10px !important;
    letter-spacing: 0.18em !important;
    line-height: 1.6 !important;
  }

  .robot-tag,
  .speaker-tag,
  .humanoid-tag,
  .air-tag,
  .hp-tag,
  .ar-tag {
    font-size: 12px !important;
    padding: 8px 10px !important;
  }

  .robot-color-row,
  .speaker-color-row,
  .humanoid-color-row,
  .air-color-row,
  .hp-color-row,
  .ar-color-row {
    grid-template-columns: 34px 1fr !important;
    gap: 11px !important;
    font-size: 12.5px !important;
    line-height: 1.55 !important;
  }

  .air-story-split-copy,
  .hp-split-copy,
  .ar-split-copy,
  .ar-split-note,
  .hp-split-note {
    padding: 0 !important;
    max-width: 100% !important;
  }

  .kv-summary,
  .robot-summary,
  .speaker-summary,
  .humanoid-summary,
  .air-summary,
  .hp-summary,
  .ar-summary {
    grid-template-columns: 1fr !important;
    gap: 18px !important;
    padding-top: 30px !important;
  }

  .kv-next,
  .robot-next,
  .speaker-next,
  .humanoid-next,
  .air-next,
  .hp-next,
  .ar-next {
    padding: 70px var(--pad-x) !important;
  }

  .kv-next-inner,
  .robot-next-inner,
  .speaker-next-inner,
  .humanoid-next-inner,
  .air-next-inner,
  .hp-next-inner,
  .ar-next-inner {
    grid-template-columns: 1fr !important;
    gap: 26px !important;
    align-items: start !important;
  }

  .kv-next-meta,
  .robot-next-meta,
  .speaker-next-meta,
  .humanoid-next-meta,
  .air-next-meta,
  .hp-next-meta,
  .ar-next-meta {
    align-items: flex-start !important;
    text-align: left !important;
    font-size: 12.5px !important;
    line-height: 1.75 !important;
  }
}

@media (max-width: 420px) {
  .kv-meta,
  .robot-meta,
  .speaker-meta,
  .humanoid-meta,
  .air-meta,
  .hp-meta,
  .ar-meta {
    grid-template-columns: 1fr !important;
  }

  .kv-placeholder,
  .robot-placeholder,
  .speaker-placeholder,
  .humanoid-placeholder,
  .air-placeholder,
  .hp-placeholder,
  .ar-placeholder,
  .hp-story-screen,
  .ar-story-screen,
  .humanoid-story-screen,
  .air-story-split-media,
  .hp-split-screen,
  .ar-split-screen {
    min-height: 58svh !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}


/* ===== Mobile nav forced contrast theme fix =====
   Must override product-page body colors on black/white alternating sections. */
@media (max-width: 640px) {
  .nav.light,
  .nav:not(.dark) {
    background: rgba(255, 255, 255, 0.94) !important;
    color: #111111 !important;
    border-bottom: 1px solid rgba(0, 0, 0, 0.12) !important;
  }

  .nav.dark {
    background: rgba(6, 6, 6, 0.92) !important;
    color: #ffffff !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.14) !important;
  }

  .nav.light .nav-logo,
  .nav.light .nav-mobile-actions a,
  .nav:not(.dark) .nav-logo,
  .nav:not(.dark) .nav-mobile-actions a {
    color: #111111 !important;
    opacity: 1 !important;
  }

  .nav.dark .nav-logo,
  .nav.dark .nav-mobile-actions a {
    color: #ffffff !important;
    opacity: 1 !important;
  }
}

/* ===== Title weight polish · desktop + mobile sync =====
   Keep the Apple-like refined tone, but make first-level titles slightly stronger. */
.hero h1,
.h-display,
.product-hero h1,
.kv-hero h1,
.robot-hero h1,
.speaker-hero h1,
.humanoid-hero h1,
.air-hero h1,
.headphone-hero h1,
.ar-hero h1 {
  font-weight: 300 !important;
  -webkit-font-smoothing: antialiased;
  text-rendering: geometricPrecision;
}

.h-1,
.kv-section-title,
.kv-focus-title,
.robot-section-title,
.speaker-section-title,
.humanoid-section-title,
.air-section-title,
.hp-section-title,
.ar-section-title {
  font-weight: 400 !important;
  -webkit-font-smoothing: antialiased;
  text-rendering: geometricPrecision;
}

@media (max-width: 640px) {
  .hero h1,
  .h-display,
  .product-hero h1,
  .kv-hero h1,
  .robot-hero h1,
  .speaker-hero h1,
  .humanoid-hero h1,
  .air-hero h1,
  .headphone-hero h1,
  .ar-hero h1 {
    font-weight: 300 !important;
  }

  .h-1,
  .kv-section-title,
  .kv-focus-title,
  .robot-section-title,
  .speaker-section-title,
  .humanoid-section-title,
  .air-section-title,
  .hp-section-title,
  .ar-section-title {
    font-weight: 400 !important;
  }
}


/* ===== Home directory · mobile center-high gallery override ===== */
@media (max-width: 640px) {
  .fan-section {
    padding: 78px 0 96px !important;
  }

  .fan-head {
    padding: 0 var(--pad-x) !important;
    margin-bottom: 38px !important;
  }

  .fan-stage {
    display: flex !important;
    grid-template-columns: none !important;
    align-items: flex-end !important;
    justify-content: flex-start !important;
    gap: 12px !important;
    height: 332px !important;
    min-height: 332px !important;
    perspective: none !important;
    overflow-x: auto !important;
    overflow-y: hidden !important;
    scroll-snap-type: x mandatory !important;
    padding: 36px var(--pad-x) 10px !important;
    -webkit-overflow-scrolling: touch;
  }

  .fan-stage::-webkit-scrollbar {
    display: none;
  }

  .fan-card,
  .fan-card:first-child {
    width: 128px !important;
    flex: 0 0 128px !important;
    margin-left: 0 !important;
    border-radius: 0 !important;
    transform: none !important;
    box-shadow: none !important;
    display: flex !important;
    flex-direction: column !important;
    grid-template-columns: none !important;
    scroll-snap-align: center !important;
    overflow: visible !important;
  }

  .fan-card.f-1,
  .fan-card.f-7 {
    height: 174px !important;
  }

  .fan-card.f-2,
  .fan-card.f-6 {
    height: 214px !important;
  }

  .fan-card.f-3,
  .fan-card.f-5 {
    height: 252px !important;
  }

  .fan-card.f-4 {
    height: 296px !important;
    width: 142px !important;
    flex-basis: 142px !important;
  }

  .fan-card::before {
    content: attr(data-caption) !important;
    top: -24px !important;
    left: 0 !important;
    font-size: 8px !important;
    letter-spacing: 0.04em !important;
    opacity: 0.52 !important;
  }

  .fan-card:hover {
    transform: none !important;
    box-shadow: none !important;
  }

  .fan-card-inner {
    flex: 1 1 auto !important;
    min-height: 0 !important;
    padding: 15px !important;
    border-radius: 0 !important;
    align-items: center !important;
    justify-content: center !important;
  }

  .fan-card-foot {
    min-height: 66px !important;
    border-left: 0 !important;
    border-top: 1px solid rgba(255, 255, 255, 0.08) !important;
    border-radius: 0 !important;
    padding: 11px 13px 13px !important;
  }

  .fan-stage .fan-card:nth-child(odd) .fan-card-foot {
    border-top-color: rgba(0, 0, 0, 0.075) !important;
  }

  .fan-stage .fan-card:nth-child(even) .fan-card-foot {
    border-top-color: rgba(255, 255, 255, 0.085) !important;
  }

  .fan-card-img-label {
    font-size: 7px !important;
    line-height: 1.7 !important;
    letter-spacing: 0.17em !important;
    text-align: center !important;
  }

  .fan-no {
    font-size: 9px !important;
    margin-bottom: 5px !important;
  }

  .fan-card-foot strong {
    font-size: 13px !important;
    line-height: 1.35 !important;
  }
}


/* ===== Home directory · strict rectangle corners ===== */
.fan-card,
.fan-card::after,
.fan-card-inner,
.fan-card-foot {
  border-radius: 0 !important;
}

@media (max-width: 640px) {
  .fan-card,
  .fan-card::after,
  .fan-card-inner,
  .fan-card-foot {
    border-radius: 0 !important;
  }
}

/* ===== Home rhythm update: separate intro + dark/light section fixes ===== */
@media (max-width: 640px) {
  .portfolio-intro-section {
    padding-top: 84px !important;
    padding-bottom: 88px !important;
  }

  .portfolio-intro-inner {
    border-top-color: rgba(255, 255, 255, 0.14) !important;
    padding-top: 34px !important;
  }

  .portfolio-intro-section .eyebrow {
    color: rgba(255, 255, 255, 0.46) !important;
  }

  .portfolio-intro-section .h-2 {
    color: #ffffff !important;
  }

  .portfolio-intro-copy {
    color: rgba(255, 255, 255, 0.64) !important;
  }

  .portfolio-intro-note {
    color: rgba(255, 255, 255, 0.44) !important;
  }

  .process-dark .sec-head p,
  .process-dark .ps-en,
  .process-dark .ps-desc {
    color: rgba(255, 255, 255, 0.58) !important;
  }

  .process-dark .eyebrow,
  .process-dark .ps-num {
    color: rgba(255, 255, 255, 0.38) !important;
  }

  .process-dark .ps-cn,
  .process-dark .h-2 {
    color: rgba(255, 255, 255, 0.94) !important;
  }

  .process-dark .process-strip,
  .process-dark .ps-item,
  .process-dark .ps-item:not(:last-child) {
    border-color: rgba(255, 255, 255, 0.12) !important;
  }

  .contact-light {
    background: #ffffff !important;
    color: #111111 !important;
  }

  .contact-light .contact-avail {
    border-color: rgba(0, 0, 0, 0.14) !important;
    color: rgba(0, 0, 0, 0.62) !important;
  }

  .contact-light .eyebrow,
  .contact-light .cr-label {
    color: rgba(0, 0, 0, 0.44) !important;
  }

  .contact-light .h-2,
  .contact-light .cr-value {
    color: #111111 !important;
  }

  .contact-light .contact-row,
  .contact-light .cr-item {
    border-color: rgba(0, 0, 0, 0.1) !important;
  }
}

/* ===== Production preview cleanup: hide technical Codex placeholder labels =====
   Data attributes and HTML comments are retained for Codex replacement rules.
   This only prevents technical labels such as HOME HERO COVER / file paths from appearing in the visible portfolio preview. */
.hero-bg-label,
.kv-placeholder::before,
.kv-placeholder::after,
.robot-placeholder::before,
.robot-placeholder::after,
.speaker-placeholder::before,
.speaker-placeholder::after,
.humanoid-placeholder::before,
.humanoid-placeholder::after,
.air-placeholder::before,
.air-placeholder::after,
.hp-placeholder::before,
.hp-placeholder::after,
.ar-placeholder::before,
.ar-placeholder::after {
  content: none !important;
  display: none !important;
}

/* ======================================================================
   V70 MOBILE COMPLETE IMAGE MODE · DO NOT REMOVE
   目标：手机端所有作品图完整显示，不裁切。
   说明：只通过移动端 CSS 覆盖 object-fit / background-size，保留原图片命名与 HTML 路径。
   Codex 后续只需按 CODEX_IMAGE_NAMING_AND_PLACEMENT_MASTER.txt 放图，不要改命名。
   ====================================================================== */
@media (max-width: 640px) {
  /* 首页首屏封面：第三层 var(--hero-cover) 使用 contain，避免移动端裁切。 */
  .hero-bg {
    background-size: cover, cover, contain, auto, cover !important;
    background-position: center center, center center, center center, center center, center center !important;
    background-repeat: no-repeat, no-repeat, no-repeat, repeat, no-repeat !important;
  }

  /* 首页目录封面：封面完整显示，不再按 cover 裁切。 */
  .fan-card-inner::before {
    background-size: contain !important;
    background-position: center center !important;
    background-repeat: no-repeat !important;
    transform: none !important;
  }

  .fan-card:hover .fan-card-inner::before {
    transform: none !important;
  }

  /* 产品页首屏背景图：完整显示，不放大、不裁切。 */
  .project-hero-media img {
    object-fit: contain !important;
    object-position: center center !important;
    transform: none !important;
  }

  .project-hero-media.dim-dark img,
  .project-hero-media.dim-light img {
    filter: saturate(0.94) brightness(0.62) contrast(1.02) blur(2px) !important;
  }

  .project-hero-media.dim-light img {
    filter: saturate(0.92) brightness(0.92) contrast(0.98) blur(2px) !important;
  }

  /* 正文作品图：保持 16:9 容器，图片完整显示，不裁切。 */
  .kv-placeholder,
  .robot-placeholder,
  .speaker-placeholder,
  .humanoid-placeholder,
  .air-placeholder,
  .hp-placeholder,
  .ar-placeholder,
  .hp-story-screen,
  .ar-story-screen,
  .humanoid-story-screen,
  .air-story-split-media,
  .hp-split-screen,
  .ar-split-screen {
    aspect-ratio: 16 / 9 !important;
    min-height: auto !important;
    height: auto !important;
    overflow: hidden !important;
  }

  .project-image,
  .kv-placeholder > .project-image,
  .robot-placeholder > .project-image,
  .speaker-placeholder > .project-image,
  .humanoid-placeholder > .project-image,
  .air-placeholder > .project-image,
  .hp-placeholder > .project-image,
  .ar-placeholder > .project-image,
  .crop-tight > .project-image {
    width: 100% !important;
    height: 100% !important;
    object-fit: contain !important;
    object-position: center center !important;
    transform: none !important;
  }

  /* 深色/浅色图框分别保留高级底色，contain 后不会显得空。 */
  .robot-placeholder,
  .hp-placeholder.dark,
  .ar-placeholder.dark,
  .humanoid-placeholder.dark,
  .air-placeholder.dark,
  .kv-placeholder.dark,
  .speaker-placeholder.dark {
    background-color: #080808 !important;
  }

  .kv-placeholder,
  .speaker-placeholder,
  .air-placeholder.white,
  .ar-placeholder.white,
  .hp-placeholder.white,
  .humanoid-placeholder.white {
    background-color: #f4f4f5 !important;
  }
}

@media (max-width: 420px) {
  .kv-placeholder,
  .robot-placeholder,
  .speaker-placeholder,
  .humanoid-placeholder,
  .air-placeholder,
  .hp-placeholder,
  .ar-placeholder,
  .hp-story-screen,
  .ar-story-screen,
  .humanoid-story-screen,
  .air-story-split-media,
  .hp-split-screen,
  .ar-split-screen {
    aspect-ratio: 16 / 9 !important;
    min-height: auto !important;
  }
}

/* ======================================================================
   V71 MOBILE QUIET TYPOGRAPHY · DO NOT REMOVE
   目标：移动端减少文字压迫感，保留更多留白与高级感。
   说明：只覆盖手机端字体、行距、间距和次要信息显隐，不改图片命名、不改 HTML 结构。
   ====================================================================== */
@media (max-width: 640px) {
  :root {
    --pad-x: clamp(24px, 6.2vw, 32px);
  }

  body {
    font-size: 12px !important;
    letter-spacing: 0 !important;
  }

  .section,
  .section.off,
  .section.dark {
    padding-top: 94px !important;
    padding-bottom: 100px !important;
  }

  .eyebrow {
    font-size: 8.5px !important;
    letter-spacing: 0.2em !important;
    line-height: 1.8 !important;
    margin-bottom: 14px !important;
  }

  .h-display {
    font-size: clamp(34px, 10vw, 46px) !important;
    line-height: 1.1 !important;
  }

  .h-1 {
    font-size: clamp(26px, 7.4vw, 34px) !important;
    line-height: 1.16 !important;
  }

  .h-2 {
    font-size: clamp(22px, 6.2vw, 29px) !important;
    line-height: 1.22 !important;
  }

  .h-3 {
    font-size: clamp(17px, 4.7vw, 22px) !important;
    line-height: 1.35 !important;
  }

  .body-lg,
  .body,
  .sec-head p,
  .portfolio-intro-copy,
  .portfolio-intro-copy p,
  .home-creative-copy,
  .ps-desc,
  .cr-value {
    font-size: 12px !important;
    line-height: 1.76 !important;
    letter-spacing: 0.005em !important;
  }

  .body-lg,
  .body,
  .sec-head p,
  .portfolio-intro-copy,
  .home-creative-copy {
    max-width: 30em !important;
  }

  .hero {
    min-height: 92svh !important;
    padding: 110px var(--pad-x) 82px !important;
  }

  .hero-tag {
    font-size: 8px !important;
    letter-spacing: 0.2em !important;
    line-height: 1.8 !important;
    margin-bottom: 30px !important;
  }

  .hero h1 {
    font-size: clamp(48px, 15.5vw, 66px) !important;
    line-height: 1.03 !important;
    letter-spacing: 0.075em !important;
    margin-bottom: 20px !important;
  }

  .hero-sub {
    gap: 8px !important;
    margin-bottom: 24px !important;
  }

  .hero-sub-en {
    font-size: 9px !important;
    letter-spacing: 0.36em !important;
  }

  .hero-sub-cn {
    max-width: 24em !important;
    font-size: 11px !important;
    line-height: 1.72 !important;
  }

  .hero-desc {
    max-width: 28em !important;
    gap: 7px !important;
    margin-bottom: 0 !important;
    font-size: 10.5px !important;
    line-height: 1.68 !important;
    color: rgba(255, 255, 255, 0.48) !important;
  }

  .hero-desc-item strong {
    color: rgba(255, 255, 255, 0.68) !important;
  }

  .hero-meta,
  .strip {
    display: none !important;
  }

  .fan-section {
    padding-top: 96px !important;
    padding-bottom: 108px !important;
  }

  .fan-head {
    margin-bottom: 44px !important;
  }

  .fan-head .body-lg {
    font-size: 12px !important;
    line-height: 1.74 !important;
    max-width: 29em !important;
  }

  .fan-stage {
    height: 348px !important;
    min-height: 348px !important;
  }

  .portfolio-intro-section {
    padding-top: 100px !important;
    padding-bottom: 108px !important;
  }

  .portfolio-intro-inner {
    padding-top: 38px !important;
  }

  .portfolio-intro-copy p + p {
    margin-top: 14px !important;
  }

  .portfolio-intro-note,
  .tg-cat,
  .ps-en,
  .contact-avail,
  .cr-label {
    font-size: 8.5px !important;
    letter-spacing: 0.18em !important;
  }

  .home-creative-grid,
  .tools-grid,
  .process-strip {
    margin-top: 34px !important;
  }

  .home-creative-card p,
  .tg-tag,
  .ps-desc,
  .contact-light p {
    font-size: 11.5px !important;
    line-height: 1.72 !important;
  }

  .ps-cn {
    font-size: 14px !important;
    line-height: 1.38 !important;
  }

  .footer {
    padding-top: 58px !important;
    padding-bottom: 42px !important;
  }

  /* Product hero: quieter on phone */
  .kv-hero,
  .robot-hero,
  .speaker-hero,
  .humanoid-hero,
  .air-hero,
  .headphone-hero,
  .ar-hero {
    min-height: 90svh !important;
    padding: 112px var(--pad-x) 76px !important;
  }

  .kv-kicker,
  .robot-kicker,
  .speaker-kicker,
  .humanoid-kicker,
  .air-kicker,
  .hp-kicker,
  .ar-kicker {
    font-size: 8px !important;
    letter-spacing: 0.2em !important;
    line-height: 1.8 !important;
    margin-bottom: 26px !important;
  }

  .kv-hero h1,
  .robot-hero h1,
  .speaker-hero h1,
  .humanoid-hero h1,
  .air-hero h1,
  .headphone-hero h1,
  .ar-hero h1 {
    font-size: clamp(32px, 9.6vw, 44px) !important;
    line-height: 1.16 !important;
    letter-spacing: 0.01em !important;
    margin-bottom: 14px !important;
  }

  .kv-subtitle,
  .robot-subtitle,
  .speaker-subtitle,
  .humanoid-subtitle,
  .air-subtitle,
  .hp-subtitle,
  .ar-subtitle {
    font-size: 9.5px !important;
    line-height: 1.66 !important;
    letter-spacing: 0.08em !important;
    margin-bottom: 18px !important;
  }

  .kv-intro,
  .robot-intro,
  .speaker-intro,
  .humanoid-intro,
  .air-intro,
  .hp-intro,
  .ar-intro {
    max-width: 29em !important;
    font-size: 11.5px !important;
    line-height: 1.76 !important;
    letter-spacing: 0.005em !important;
    color: rgba(255, 255, 255, 0.6) !important;
  }

  .air-hero .air-intro,
  .speaker-hero .speaker-intro,
  .humanoid-hero .humanoid-intro,
  .ar-hero .ar-intro,
  .headphone-hero .hp-intro {
    color: currentColor !important;
    opacity: 0.62 !important;
  }

  .kv-meta,
  .robot-meta,
  .speaker-meta,
  .humanoid-meta,
  .air-meta,
  .hp-meta,
  .ar-meta {
    display: none !important;
  }

  .kv-section,
  .robot-section,
  .speaker-section,
  .humanoid-section,
  .air-section,
  .hp-section,
  .ar-section {
    padding-top: 96px !important;
    padding-bottom: 104px !important;
  }

  .kv-section-head,
  .robot-section-head,
  .speaker-section-head,
  .humanoid-section-head,
  .air-section-head,
  .hp-section-head,
  .ar-section-head,
  .robot-system-head,
  .speaker-system-head,
  .humanoid-system-head,
  .air-system-head,
  .hp-system-head,
  .ar-system-head {
    gap: 14px !important;
    margin-bottom: 42px !important;
  }

  .kv-section-title,
  .robot-section-title,
  .speaker-section-title,
  .humanoid-section-title,
  .air-section-title,
  .hp-section-title,
  .ar-section-title,
  .kv-summary h2,
  .robot-summary h2,
  .speaker-summary h2,
  .humanoid-summary h2,
  .air-summary h2,
  .hp-summary h2,
  .ar-summary h2,
  .kv-next-name,
  .robot-next-name,
  .speaker-next-name,
  .humanoid-next-name,
  .air-next-name,
  .hp-next-name,
  .ar-next-name {
    font-size: clamp(21px, 5.8vw, 28px) !important;
    line-height: 1.25 !important;
    letter-spacing: -0.004em !important;
  }

  .kv-desc,
  .robot-desc,
  .speaker-desc,
  .humanoid-desc,
  .air-desc,
  .hp-desc,
  .ar-desc,
  .robot-system-text,
  .speaker-system-text,
  .humanoid-system-text,
  .air-system-text,
  .hp-system-text,
  .ar-system-text,
  .kv-caption p,
  .robot-caption p,
  .speaker-caption p,
  .humanoid-caption p,
  .air-caption p,
  .hp-caption p,
  .ar-caption p,
  .kv-summary p,
  .robot-summary p,
  .speaker-summary p,
  .humanoid-summary p,
  .air-summary p,
  .hp-summary p,
  .ar-summary p,
  .robot-card p,
  .speaker-card p,
  .humanoid-card p,
  .air-card p,
  .hp-card p,
  .ar-card p {
    max-width: 31em !important;
    font-size: 11.5px !important;
    line-height: 1.72 !important;
    letter-spacing: 0 !important;
  }

  .robot-brand-grid,
  .speaker-brand-grid,
  .humanoid-brand-grid,
  .air-brand-grid,
  .hp-brand-grid,
  .ar-brand-grid,
  .kv-pair,
  .robot-pair,
  .speaker-pair,
  .air-pair,
  .air-feature-pair,
  .humanoid-image-stage,
  .air-story-split,
  .hp-split,
  .ar-split {
    gap: 52px !important;
  }

  .robot-card,
  .speaker-card,
  .humanoid-card,
  .air-card,
  .hp-card,
  .ar-card,
  .robot-card:nth-child(even),
  .speaker-card:nth-child(even),
  .humanoid-card:nth-child(even),
  .air-card:nth-child(even),
  .hp-card:nth-child(even),
  .ar-card:nth-child(even) {
    padding-top: 22px !important;
    padding-bottom: 26px !important;
  }

  .robot-focus-panel,
  .speaker-focus-panel,
  .humanoid-focus-panel,
  .air-focus-panel,
  .hp-focus-panel,
  .ar-focus-panel {
    gap: 16px !important;
    padding-top: 34px !important;
    padding-bottom: 36px !important;
  }

  .robot-focus-panel strong,
  .speaker-focus-panel strong,
  .humanoid-focus-panel strong,
  .air-focus-panel strong,
  .hp-focus-panel strong,
  .ar-focus-panel strong {
    font-size: clamp(19px, 5.2vw, 24px) !important;
    line-height: 1.34 !important;
  }

  .kv-caption,
  .robot-caption,
  .speaker-caption,
  .humanoid-caption,
  .air-caption,
  .hp-caption,
  .ar-caption,
  .robot-tile .robot-caption,
  .speaker-tile .speaker-caption,
  .air-tile .air-caption {
    gap: 7px !important;
    padding-top: 18px !important;
  }

  .kv-caption h3,
  .robot-caption h3,
  .speaker-caption h3,
  .humanoid-caption h3,
  .air-caption h3,
  .hp-caption h3,
  .ar-caption h3 {
    font-size: clamp(16px, 4.5vw, 20px) !important;
    line-height: 1.34 !important;
    margin-bottom: 5px !important;
  }

  .kv-num,
  .robot-num,
  .speaker-num,
  .humanoid-num,
  .air-num,
  .hp-num,
  .ar-num {
    font-size: 8.8px !important;
    letter-spacing: 0.16em !important;
    line-height: 1.55 !important;
  }

  .robot-tag,
  .speaker-tag,
  .humanoid-tag,
  .air-tag,
  .hp-tag,
  .ar-tag {
    font-size: 10.5px !important;
    line-height: 1.45 !important;
    padding: 7px 9px !important;
  }

  .robot-color-row,
  .speaker-color-row,
  .humanoid-color-row,
  .air-color-row,
  .hp-color-row,
  .ar-color-row {
    grid-template-columns: 30px 1fr !important;
    gap: 10px !important;
    font-size: 11px !important;
    line-height: 1.55 !important;
  }

  .kv-summary,
  .robot-summary,
  .speaker-summary,
  .humanoid-summary,
  .air-summary,
  .hp-summary,
  .ar-summary {
    gap: 20px !important;
    padding-top: 42px !important;
  }

  .kv-next,
  .robot-next,
  .speaker-next,
  .humanoid-next,
  .air-next,
  .hp-next,
  .ar-next {
    padding-top: 92px !important;
    padding-bottom: 94px !important;
  }

  .kv-next-meta,
  .robot-next-meta,
  .speaker-next-meta,
  .humanoid-next-meta,
  .air-next-meta,
  .hp-next-meta,
  .ar-next-meta {
    font-size: 11px !important;
    line-height: 1.68 !important;
  }
}

@media (max-width: 420px) {
  .hero h1 {
    font-size: clamp(44px, 14.5vw, 58px) !important;
  }

  .kv-hero h1,
  .robot-hero h1,
  .speaker-hero h1,
  .humanoid-hero h1,
  .air-hero h1,
  .headphone-hero h1,
  .ar-hero h1 {
    font-size: clamp(30px, 9vw, 40px) !important;
  }

  .body-lg,
  .body,
  .hero-sub-cn,
  .kv-intro,
  .robot-intro,
  .speaker-intro,
  .humanoid-intro,
  .air-intro,
  .hp-intro,
  .ar-intro,
  .kv-desc,
  .robot-desc,
  .speaker-desc,
  .humanoid-desc,
  .air-desc,
  .hp-desc,
  .ar-desc,
  .kv-caption p,
  .robot-caption p,
  .speaker-caption p,
  .humanoid-caption p,
  .air-caption p,
  .hp-caption p,
  .ar-caption p {
    font-size: 11px !important;
    line-height: 1.7 !important;
  }
}

/* ===== Mobile safe title rendering =====
   手机上关闭银灰文字渐变，避免微信/部分安卓 WebView 把渐变渲染成色块。
   桌面端仍保留银灰渐变；移动端使用纯银白文字，更稳、更高级。 */
@media (max-width: 720px) {
  .hero h1,
  .kv-hero h1,
  .robot-hero h1,
  .speaker-hero h1,
  .humanoid-hero h1,
  .air-hero h1,
  .headphone-hero h1,
  .ar-hero h1 {
    background: none !important;
    background-image: none !important;
    -webkit-background-clip: initial !important;
    background-clip: border-box !important;
    color: #e6e6e6 !important;
    -webkit-text-fill-color: #e6e6e6 !important;
    text-shadow: 0 12px 42px rgba(0, 0, 0, 0.30) !important;
  }
}


/* ======================================================================
   V73 MOBILE FINAL SELF-CHECK OVERRIDES · DO NOT REMOVE
   自检修复点：
   1) 移动端全面禁用文字渐变，避免微信/安卓 WebView 把渐变渲染成银灰色块。
   2) 收紧手机导航，避免 360px / 390px 宽度下 WORKS、CONTACT 与 Logo 挤压或横向溢出。
   3) 保持正文作品图完整显示：16:9 容器 + object-fit: contain，不裁切。
   4) 继续压低移动端文字密度，保留更多留白。
   ====================================================================== */
@media (max-width: 720px) {
  /* 所有标题类在移动端禁止 background-clip:text，彻底杜绝“渐变变成色块”。 */
  h1,
  h2,
  h3,
  .h-display,
  .h-1,
  .h-2,
  .h-3,
  .hero h1,
  .kv-hero h1,
  .robot-hero h1,
  .speaker-hero h1,
  .humanoid-hero h1,
  .air-hero h1,
  .headphone-hero h1,
  .ar-hero h1,
  .kv-section-title,
  .robot-section-title,
  .speaker-section-title,
  .humanoid-section-title,
  .air-section-title,
  .hp-section-title,
  .ar-section-title,
  .kv-summary h2,
  .robot-summary h2,
  .speaker-summary h2,
  .humanoid-summary h2,
  .air-summary h2,
  .hp-summary h2,
  .ar-summary h2,
  .kv-next-name,
  .robot-next-name,
  .speaker-next-name,
  .humanoid-next-name,
  .air-next-name,
  .hp-next-name,
  .ar-next-name {
    background: none !important;
    background-image: none !important;
    -webkit-background-clip: border-box !important;
    background-clip: border-box !important;
    -webkit-text-fill-color: currentColor !important;
  }

  .hero h1,
  .kv-hero h1,
  .robot-hero h1,
  .speaker-hero h1,
  .humanoid-hero h1,
  .air-hero h1,
  .headphone-hero h1,
  .ar-hero h1 {
    color: #e8e8e8 !important;
    -webkit-text-fill-color: #e8e8e8 !important;
    text-shadow: 0 12px 42px rgba(0, 0, 0, 0.32) !important;
  }

  .section.dark h1,
  .section.dark h2,
  .section.dark h3,
  .process-dark h1,
  .process-dark h2,
  .process-dark h3,
  .portfolio-intro-section h1,
  .portfolio-intro-section h2,
  .portfolio-intro-section h3 {
    color: rgba(255, 255, 255, 0.94) !important;
    -webkit-text-fill-color: rgba(255, 255, 255, 0.94) !important;
  }
}

@media (max-width: 640px) {
  /* 手机导航：更紧凑，防止横向溢出。 */
  .nav {
    height: 52px !important;
    overflow: hidden !important;
  }

  .nav-inner {
    width: 100% !important;
    min-width: 0 !important;
    padding-left: max(18px, env(safe-area-inset-left)) !important;
    padding-right: max(18px, env(safe-area-inset-right)) !important;
    gap: 10px !important;
  }

  .nav-logo {
    flex: 1 1 auto !important;
    min-width: 0 !important;
    max-width: none !important;
    font-size: clamp(12px, 3.45vw, 14px) !important;
    letter-spacing: 0.12em !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    white-space: nowrap !important;
  }

  .nav-mobile-actions {
    flex: 0 0 auto !important;
    min-width: 0 !important;
    gap: clamp(10px, 3vw, 16px) !important;
    font-size: clamp(9px, 2.65vw, 11px) !important;
    letter-spacing: 0.12em !important;
  }

  .nav-mobile-actions a {
    padding: 14px 0 !important;
  }

  /* 手机端正文保持轻量阅读，不让一屏被文字压满。 */
  .kv-intro,
  .robot-intro,
  .speaker-intro,
  .humanoid-intro,
  .air-intro,
  .hp-intro,
  .ar-intro,
  .kv-desc,
  .robot-desc,
  .speaker-desc,
  .humanoid-desc,
  .air-desc,
  .hp-desc,
  .ar-desc,
  .kv-caption p,
  .robot-caption p,
  .speaker-caption p,
  .humanoid-caption p,
  .air-caption p,
  .hp-caption p,
  .ar-caption p {
    max-width: 29em !important;
  }

  /* 图片完整显示最终锁定：防止前面规则把 contain 又覆盖回 cover。 */
  .project-image,
  .kv-placeholder > .project-image,
  .robot-placeholder > .project-image,
  .speaker-placeholder > .project-image,
  .humanoid-placeholder > .project-image,
  .air-placeholder > .project-image,
  .hp-placeholder > .project-image,
  .ar-placeholder > .project-image,
  .crop-tight > .project-image {
    object-fit: contain !important;
    object-position: center center !important;
    transform: none !important;
  }

  .kv-placeholder,
  .robot-placeholder,
  .speaker-placeholder,
  .humanoid-placeholder,
  .air-placeholder,
  .hp-placeholder,
  .ar-placeholder,
  .hp-story-screen,
  .ar-story-screen,
  .humanoid-story-screen,
  .air-story-split-media,
  .hp-split-screen,
  .ar-split-screen {
    aspect-ratio: 16 / 9 !important;
    min-height: auto !important;
    height: auto !important;
  }
}

@media (max-width: 360px) {
  /* 极窄手机上保留 WORKS，隐藏 CONTACT，避免顶部挤压。 */
  .nav-mobile-actions li:last-child {
    display: none !important;
  }

  .nav-logo {
    font-size: 12px !important;
    letter-spacing: 0.105em !important;
  }
}

/* ======================================================================
   V74 MOBILE HUMANOID DARK RHYTHM FIX · DO NOT REMOVE
   问题：人形机器人篇章在手机端黑白段落切换过于跳，图片未放入时会像底色错乱。
   修复：只在移动端把人形机器人篇章统一为深色系统；桌面端保持原设计。
   同时隐藏未加载图片的浏览器 alt 文本，避免预览时出现破图文字。
   ====================================================================== */
@media (max-width: 640px) {
  .kv-placeholder:not(.has-image) > img.project-image,
  .robot-placeholder:not(.has-image) > img.project-image,
  .speaker-placeholder:not(.has-image) > img.project-image,
  .humanoid-placeholder:not(.has-image) > img.project-image,
  .air-placeholder:not(.has-image) > img.project-image,
  .hp-placeholder:not(.has-image) > img.project-image,
  .ar-placeholder:not(.has-image) > img.project-image,
  .hp-story-screen:not(.has-image) > img.project-image,
  .ar-story-screen:not(.has-image) > img.project-image,
  .humanoid-story-screen:not(.has-image) > img.project-image,
  .air-story-split-media:not(.has-image) > img.project-image,
  .hp-split-screen:not(.has-image) > img.project-image,
  .ar-split-screen:not(.has-image) > img.project-image {
    display: none !important;
    visibility: hidden !important;
    opacity: 0 !important;
  }

  body[data-pid="humanoid"],
  body[data-pid="humanoid"] .humanoid-page,
  body[data-pid="humanoid"] .humanoid-section,
  body[data-pid="humanoid"] .humanoid-section.white,
  body[data-pid="humanoid"] .humanoid-section.light,
  body[data-pid="humanoid"] .humanoid-section.dark,
  body[data-pid="humanoid"] .product-creative,
  body[data-pid="humanoid"] .humanoid-next {
    background: #050505 !important;
    color: #ffffff !important;
  }

  body[data-pid="humanoid"] .nav,
  body[data-pid="humanoid"] .nav.light,
  body[data-pid="humanoid"] .nav:not(.dark) {
    background: rgba(6, 6, 6, 0.94) !important;
    color: #ffffff !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.14) !important;
  }

  body[data-pid="humanoid"] .nav .nav-logo,
  body[data-pid="humanoid"] .nav .nav-mobile-actions a,
  body[data-pid="humanoid"] .nav.light .nav-logo,
  body[data-pid="humanoid"] .nav.light .nav-mobile-actions a,
  body[data-pid="humanoid"] .nav:not(.dark) .nav-logo,
  body[data-pid="humanoid"] .nav:not(.dark) .nav-mobile-actions a {
    color: #ffffff !important;
    opacity: 0.92 !important;
  }

  body[data-pid="humanoid"] .humanoid-section-title,
  body[data-pid="humanoid"] .humanoid-focus-title,
  body[data-pid="humanoid"] .humanoid-summary h2,
  body[data-pid="humanoid"] .humanoid-next-name,
  body[data-pid="humanoid"] .humanoid-caption h3,
  body[data-pid="humanoid"] .humanoid-focus-panel strong,
  body[data-pid="humanoid"] .product-creative-title {
    color: rgba(255, 255, 255, 0.94) !important;
    -webkit-text-fill-color: rgba(255, 255, 255, 0.94) !important;
  }

  body[data-pid="humanoid"] .humanoid-desc,
  body[data-pid="humanoid"] .humanoid-system-text,
  body[data-pid="humanoid"] .humanoid-card p,
  body[data-pid="humanoid"] .humanoid-caption p,
  body[data-pid="humanoid"] .humanoid-summary p,
  body[data-pid="humanoid"] .humanoid-focus-panel p,
  body[data-pid="humanoid"] .product-creative-copy,
  body[data-pid="humanoid"] .product-creative-point p {
    color: rgba(255, 255, 255, 0.58) !important;
  }

  body[data-pid="humanoid"] .humanoid-num,
  body[data-pid="humanoid"] .humanoid-card h3,
  body[data-pid="humanoid"] .humanoid-focus-panel h3,
  body[data-pid="humanoid"] .product-creative-label,
  body[data-pid="humanoid"] .product-creative-point span {
    color: rgba(255, 255, 255, 0.38) !important;
  }

  body[data-pid="humanoid"] .humanoid-system-head,
  body[data-pid="humanoid"] .humanoid-brand-grid,
  body[data-pid="humanoid"] .humanoid-card,
  body[data-pid="humanoid"] .humanoid-focus-panel,
  body[data-pid="humanoid"] .humanoid-summary,
  body[data-pid="humanoid"] .humanoid-next,
  body[data-pid="humanoid"] .product-creative,
  body[data-pid="humanoid"] .product-creative-point {
    border-color: rgba(255, 255, 255, 0.12) !important;
  }

  body[data-pid="humanoid"] .humanoid-placeholder,
  body[data-pid="humanoid"] .humanoid-section.white .humanoid-placeholder,
  body[data-pid="humanoid"] .humanoid-section.light .humanoid-placeholder,
  body[data-pid="humanoid"] .humanoid-section.dark .humanoid-placeholder {
    background:
      linear-gradient(135deg, rgba(255,255,255,0.035), rgba(255,255,255,0.008)),
      repeating-linear-gradient(45deg, transparent, transparent 24px, rgba(255,255,255,0.025) 24px, rgba(255,255,255,0.025) 25px),
      #080808 !important;
    border-color: rgba(255, 255, 255, 0.12) !important;
  }

  body[data-pid="humanoid"] .humanoid-tag,
  body[data-pid="humanoid"] .humanoid-color-chip {
    color: rgba(255, 255, 255, 0.58) !important;
    border-color: rgba(255, 255, 255, 0.16) !important;
  }

  body[data-pid="humanoid"] .humanoid-color-row,
  body[data-pid="humanoid"] .humanoid-palette-note {
    color: rgba(255, 255, 255, 0.52) !important;
  }
}

/* ======================================================================
   V75 MOBILE STORY PAIRING FIX · DO NOT REMOVE
   问题：人形机器人移动端文案与图片脱节，像被拆散的段落。
   修复：只在手机端把每个 VISUAL STORY 变成“图片在上、文案紧跟其下”的完整案例卡片。
   图片命名、HTML 路径、80 张图片规则均不改。
   ====================================================================== */
@media (max-width: 640px) {
  /* 避免图片未放入时，浏览器显示 broken image 的 alt 文字。 */
  img.project-image {
    font-size: 0 !important;
    color: transparent !important;
    text-indent: -9999px !important;
  }

  img.project-image[hidden] {
    display: none !important;
    visibility: hidden !important;
    opacity: 0 !important;
  }

  body[data-pid="humanoid"] .humanoid-story-screen {
    min-height: auto !important;
    display: block !important;
    padding-top: 54px !important;
    padding-bottom: 58px !important;
  }

  body[data-pid="humanoid"] .humanoid-story-screen .humanoid-section-inner {
    display: flex !important;
    flex-direction: column !important;
    gap: 0 !important;
    width: 100% !important;
  }

  /* 让图片容器的子元素参与同一层级排序：图片 -> 文案。 */
  body[data-pid="humanoid"] .humanoid-story-screen .humanoid-image-stage {
    display: contents !important;
  }

  body[data-pid="humanoid"] .humanoid-story-screen .humanoid-placeholder {
    order: 1 !important;
    width: 100% !important;
    max-width: 100% !important;
    aspect-ratio: 16 / 9 !important;
    min-height: auto !important;
    margin: 0 0 18px 0 !important;
  }

  body[data-pid="humanoid"] .humanoid-story-screen .humanoid-section-head {
    order: 2 !important;
    display: block !important;
    width: 100% !important;
    max-width: 100% !important;
    margin: 0 !important;
    padding: 0 !important;
  }

  body[data-pid="humanoid"] .humanoid-story-screen .humanoid-section-head > div {
    display: block !important;
    width: 100% !important;
  }

  body[data-pid="humanoid"] .humanoid-story-screen .humanoid-num {
    margin-bottom: 10px !important;
  }

  body[data-pid="humanoid"] .humanoid-story-screen .humanoid-section-title {
    max-width: 12em !important;
    font-size: clamp(21px, 5.7vw, 27px) !important;
    line-height: 1.28 !important;
    letter-spacing: -0.004em !important;
    margin: 0 !important;
  }

  body[data-pid="humanoid"] .humanoid-story-screen .humanoid-desc {
    max-width: 30em !important;
    margin: 13px 0 0 0 !important;
    font-size: 11.2px !important;
    line-height: 1.72 !important;
    letter-spacing: 0 !important;
  }

  /* 手机端隐藏重复 caption，避免“标题说明 + 英文说明 + 段落”叠成满屏文字。 */
  body[data-pid="humanoid"] .humanoid-story-screen .humanoid-caption {
    display: none !important;
  }

  body[data-pid="humanoid"] .humanoid-story-screen.compact .humanoid-placeholder,
  body[data-pid="humanoid"] .humanoid-story-screen.compact .humanoid-caption,
  body[data-pid="humanoid"] .humanoid-story-screen.compact:nth-of-type(even) .humanoid-placeholder,
  body[data-pid="humanoid"] .humanoid-story-screen.compact:nth-of-type(even) .humanoid-caption {
    max-width: 100% !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
  }
}

/* ======================================================================
   V76 MOBILE SHORT COPY MODE · DO NOT REMOVE
   目标：电脑端保留完整文案；手机端只保留“编号 + 一句话标题/图片标题”，减少满屏文字。
   说明：仅通过 max-width:640px CSS 控制显示，不删除 HTML 文案，不改图片命名和路径。
   ====================================================================== */
@media (max-width: 640px) {
  /* 1) 手机端隐藏长段落：电脑端仍完整显示。 */
  .kv-desc,
  .robot-desc,
  .speaker-desc,
  .humanoid-desc,
  .air-desc,
  .hp-desc,
  .ar-desc,
  .kv-caption p,
  .robot-caption p,
  .speaker-caption p,
  .humanoid-caption p,
  .air-caption p,
  .hp-caption p,
  .ar-caption p,
  .air-story-note,
  .hp-split-note,
  .ar-split-note,
  .product-creative-copy,
  .product-creative-point p,
  .robot-system-text,
  .speaker-system-text,
  .humanoid-system-text,
  .air-system-text,
  .hp-system-text,
  .ar-system-text,
  .robot-card p,
  .speaker-card p,
  .humanoid-card p,
  .air-card p,
  .hp-card p,
  .ar-card p,
  .robot-focus-panel p,
  .speaker-focus-panel p,
  .humanoid-focus-panel p,
  .air-focus-panel p,
  .hp-focus-panel p,
  .ar-focus-panel p {
    display: none !important;
  }

  /* 2) 手机端隐藏辅助色卡/说明，避免 KV 页面一张图下面堆多层信息。 */
  .kv-palette,
  .swatches,
  .kv-palette-title,
  .kv-palette-note,
  .air-story-tags,
  .robot-tags,
  .speaker-tags,
  .humanoid-tags,
  .hp-tags,
  .ar-tags {
    display: none !important;
  }

  /* 3) 保留的移动端文字：更小、更克制、更像图片注释。 */
  .kv-section-head,
  .robot-section-head,
  .speaker-section-head,
  .humanoid-section-head,
  .air-section-head,
  .hp-section-head,
  .ar-section-head {
    margin-bottom: 24px !important;
  }

  .kv-section-title,
  .robot-section-title,
  .speaker-section-title,
  .humanoid-section-title,
  .air-section-title,
  .hp-section-title,
  .ar-section-title {
    max-width: 13em !important;
    font-size: clamp(19px, 5.25vw, 25px) !important;
    line-height: 1.32 !important;
    letter-spacing: 0 !important;
  }

  .kv-num,
  .robot-num,
  .speaker-num,
  .humanoid-num,
  .air-num,
  .hp-num,
  .ar-num {
    font-size: 8.5px !important;
    line-height: 1.4 !important;
    letter-spacing: 0.18em !important;
  }

  .kv-caption,
  .robot-caption,
  .speaker-caption,
  .air-caption,
  .hp-caption,
  .ar-caption {
    padding-top: 12px !important;
    gap: 6px !important;
  }

  .kv-caption h3,
  .robot-caption h3,
  .speaker-caption h3,
  .air-caption h3,
  .hp-caption h3,
  .ar-caption h3,
  .humanoid-caption h3 {
    margin: 0 !important;
    max-width: 16em !important;
    font-size: 12.5px !important;
    line-height: 1.45 !important;
    letter-spacing: 0.02em !important;
    font-weight: 500 !important;
  }

  /* 4) 手机端减少系统说明区密度，但不影响桌面端。 */
  .robot-card,
  .speaker-card,
  .humanoid-card,
  .air-card,
  .hp-card,
  .ar-card,
  .product-creative-point {
    padding-top: 16px !important;
    padding-bottom: 16px !important;
  }

  .robot-card h3,
  .speaker-card h3,
  .humanoid-card h3,
  .air-card h3,
  .hp-card h3,
  .ar-card h3,
  .product-creative-point span {
    font-size: 11px !important;
    line-height: 1.45 !important;
    letter-spacing: 0.08em !important;
  }

  /* 5) 手机端图文紧凑成组：图片下方只跟一行标题说明。 */
  .kv-placeholder,
  .robot-placeholder,
  .speaker-placeholder,
  .air-placeholder,
  .hp-placeholder,
  .ar-placeholder,
  .humanoid-placeholder {
    margin-bottom: 0 !important;
  }

  .kv-tile,
  .robot-tile,
  .speaker-tile,
  .air-tile,
  .hp-split,
  .ar-split {
    gap: 14px !important;
  }

  /* 人形机器人已在 V75 做成“图片在上、文案紧跟图片下方”，这里只再删减长段落。 */
  body[data-pid="humanoid"] .humanoid-story-screen .humanoid-desc {
    display: none !important;
  }

  body[data-pid="humanoid"] .humanoid-story-screen .humanoid-section-head {
    padding-top: 14px !important;
  }

  body[data-pid="humanoid"] .humanoid-story-screen .humanoid-section-title {
    font-size: clamp(19px, 5.25vw, 25px) !important;
    line-height: 1.32 !important;
    max-width: 13em !important;
  }
}

/* ======================================================================
   V77 MOBILE ULTRA SHORT COPY + COMPACT RHYTHM · DO NOT REMOVE
   用户要求：手机端所有文案继续精简，电脑端不动；同时收掉过大的留白。
   说明：只在 max-width:640px 生效，不改 HTML、不改图片路径、不改 80 张图片命名规则。
   ====================================================================== */
@media (max-width: 640px) {
  :root {
    --pad-x: clamp(18px, 5.2vw, 24px) !important;
  }

  /* 全局收紧：避免手机端大面积空白。 */
  .section,
  .section.off,
  .section.dark,
  .portfolio-intro-section,
  .process-dark,
  .contact-light {
    padding-top: 56px !important;
    padding-bottom: 60px !important;
  }

  .hero {
    min-height: 76svh !important;
    padding: 86px var(--pad-x) 48px !important;
  }

  .hero-tag {
    margin-bottom: 18px !important;
  }

  .hero h1 {
    margin-bottom: 16px !important;
  }

  .hero-sub {
    margin-bottom: 12px !important;
  }

  .hero-desc,
  .hero-meta,
  .strip,
  .portfolio-intro-note,
  .home-creative-card p,
  .sec-head p,
  .portfolio-intro-copy p:not(:first-child),
  .tools-grid,
  .process-strip .ps-desc,
  .footer-bottom {
    display: none !important;
  }

  .fan-section {
    padding-top: 58px !important;
    padding-bottom: 66px !important;
  }

  .fan-head {
    margin-bottom: 24px !important;
  }

  .fan-head .body-lg {
    display: none !important;
  }

  .fan-stage {
    height: 292px !important;
    min-height: 292px !important;
    padding-top: 26px !important;
  }

  /* 产品首屏：不再用接近一整屏的大空白。 */
  .kv-hero,
  .robot-hero,
  .speaker-hero,
  .humanoid-hero,
  .air-hero,
  .headphone-hero,
  .ar-hero {
    min-height: 62svh !important;
    padding: 78px var(--pad-x) 36px !important;
    align-items: flex-end !important;
  }

  .kv-kicker,
  .robot-kicker,
  .speaker-kicker,
  .humanoid-kicker,
  .air-kicker,
  .hp-kicker,
  .ar-kicker {
    margin-bottom: 14px !important;
    font-size: 7.8px !important;
    letter-spacing: 0.18em !important;
  }

  .kv-hero h1,
  .robot-hero h1,
  .speaker-hero h1,
  .humanoid-hero h1,
  .air-hero h1,
  .headphone-hero h1,
  .ar-hero h1 {
    font-size: clamp(28px, 8.2vw, 38px) !important;
    line-height: 1.14 !important;
    margin-bottom: 10px !important;
  }

  .kv-subtitle,
  .robot-subtitle,
  .speaker-subtitle,
  .humanoid-subtitle,
  .air-subtitle,
  .hp-subtitle,
  .ar-subtitle {
    font-size: 8.8px !important;
    line-height: 1.48 !important;
    margin-bottom: 0 !important;
    max-width: 24em !important;
  }

  /* 手机端产品首屏只保留标题 + 极短副标题，隐藏长 intro/meta。 */
  .kv-intro,
  .robot-intro,
  .speaker-intro,
  .humanoid-intro,
  .air-intro,
  .hp-intro,
  .ar-intro,
  .kv-meta,
  .robot-meta,
  .speaker-meta,
  .humanoid-meta,
  .air-meta,
  .hp-meta,
  .ar-meta {
    display: none !important;
  }

  /* 手机端删除长说明区：桌面端仍保留。 */
  .product-creative,
  .kv-section:has(.kv-summary),
  .robot-section:has(.robot-system-head),
  .robot-section:has(.robot-summary),
  .speaker-section:has(.speaker-system-head),
  .speaker-section:has(.speaker-summary),
  .humanoid-section:has(.humanoid-system-head),
  .humanoid-section:has(.humanoid-summary),
  .air-section:has(.air-system-head),
  .air-section:has(.air-summary),
  .hp-section:has(.hp-system-head),
  .hp-section:has(.hp-summary),
  .ar-section:has(.ar-system-head),
  .ar-section:has(.ar-summary) {
    display: none !important;
  }

  /* 产品正文：只保留图片 + 轻量标题，不要满屏解释。 */
  .kv-section,
  .robot-section,
  .speaker-section,
  .humanoid-section,
  .air-section,
  .hp-section,
  .ar-section {
    padding-top: 42px !important;
    padding-bottom: 46px !important;
  }

  .kv-section-head,
  .robot-section-head,
  .speaker-section-head,
  .air-section-head,
  .hp-section-head,
  .ar-section-head {
    display: none !important;
  }

  .kv-pair,
  .robot-pair,
  .speaker-pair,
  .air-pair,
  .air-feature-pair,
  .humanoid-image-stage,
  .air-story-split,
  .hp-split,
  .ar-split,
  .robot-brand-grid,
  .speaker-brand-grid,
  .humanoid-brand-grid,
  .air-brand-grid,
  .hp-brand-grid,
  .ar-brand-grid {
    gap: 18px !important;
  }

  .kv-tile,
  .robot-tile,
  .speaker-tile,
  .air-tile,
  .hp-split,
  .ar-split,
  .air-story-split {
    gap: 10px !important;
  }

  .kv-caption,
  .robot-caption,
  .speaker-caption,
  .humanoid-caption,
  .air-caption,
  .hp-caption,
  .ar-caption,
  .robot-tile .robot-caption,
  .speaker-tile .speaker-caption,
  .air-tile .air-caption {
    padding-top: 10px !important;
    gap: 4px !important;
  }

  .kv-caption h3,
  .robot-caption h3,
  .speaker-caption h3,
  .humanoid-caption h3,
  .air-caption h3,
  .hp-caption h3,
  .ar-caption h3,
  .air-story-split-copy h3,
  .hp-split-copy h3,
  .ar-split-copy h3 {
    font-size: 12.2px !important;
    line-height: 1.38 !important;
    letter-spacing: 0.015em !important;
    margin: 0 !important;
    max-width: 17em !important;
    font-weight: 500 !important;
  }

  .kv-num,
  .robot-num,
  .speaker-num,
  .humanoid-num,
  .air-num,
  .hp-num,
  .ar-num {
    font-size: 7.8px !important;
    line-height: 1.35 !important;
    letter-spacing: 0.16em !important;
    margin-bottom: 4px !important;
  }

  /* 隐藏所有解释段落、注释、标签、色卡、辅助卖点。 */
  .kv-desc,
  .robot-desc,
  .speaker-desc,
  .humanoid-desc,
  .air-desc,
  .hp-desc,
  .ar-desc,
  .kv-caption p,
  .robot-caption p,
  .speaker-caption p,
  .humanoid-caption p,
  .air-caption p,
  .hp-caption p,
  .ar-caption p,
  .air-story-note,
  .air-story-tags,
  .hp-split-note,
  .ar-split-note,
  .robot-tags,
  .speaker-tags,
  .humanoid-tags,
  .air-tags,
  .hp-tags,
  .ar-tags,
  .kv-palette,
  .swatches,
  .kv-palette-title,
  .kv-palette-note,
  .air-story-split-copy p,
  .hp-split-copy p,
  .ar-split-copy p,
  .robot-focus-panel,
  .speaker-focus-panel,
  .humanoid-focus-panel,
  .air-focus-panel,
  .hp-focus-panel,
  .ar-focus-panel,
  .product-creative-points {
    display: none !important;
  }

  /* 拆分图文模块也压缩成“图 + 一句标题”。 */
  .air-story-split-copy,
  .hp-split-copy,
  .ar-split-copy {
    padding: 0 !important;
    margin: 0 !important;
  }

  .air-story-split-copy .air-num,
  .hp-split-copy .hp-num,
  .ar-split-copy .ar-num {
    display: block !important;
  }

  .kv-placeholder,
  .robot-placeholder,
  .speaker-placeholder,
  .humanoid-placeholder,
  .air-placeholder,
  .hp-placeholder,
  .ar-placeholder,
  .hp-story-screen,
  .ar-story-screen,
  .humanoid-story-screen,
  .air-story-split-media,
  .hp-split-screen,
  .ar-split-screen {
    margin: 0 !important;
  }

  /* 人形机器人：继续保持图片和一句话标题成组，进一步收紧上下距离。 */
  body[data-pid="humanoid"] .humanoid-story-screen {
    padding-top: 38px !important;
    padding-bottom: 42px !important;
  }

  body[data-pid="humanoid"] .humanoid-story-screen .humanoid-placeholder {
    margin-bottom: 10px !important;
  }

  body[data-pid="humanoid"] .humanoid-story-screen .humanoid-section-head {
    display: block !important;
    padding-top: 0 !important;
  }

  body[data-pid="humanoid"] .humanoid-story-screen .humanoid-section-title {
    font-size: 12.6px !important;
    line-height: 1.42 !important;
    max-width: 18em !important;
    letter-spacing: 0.01em !important;
    margin: 0 !important;
  }

  body[data-pid="humanoid"] .humanoid-story-screen .humanoid-num {
    margin-bottom: 4px !important;
  }

  /* 下一页入口也收紧，避免尾部大空白。 */
  .kv-next,
  .robot-next,
  .speaker-next,
  .humanoid-next,
  .air-next,
  .hp-next,
  .ar-next {
    padding-top: 52px !important;
    padding-bottom: 56px !important;
  }

  .kv-next-inner,
  .robot-next-inner,
  .speaker-next-inner,
  .humanoid-next-inner,
  .air-next-inner,
  .hp-next-inner,
  .ar-next-inner {
    gap: 14px !important;
  }

  .kv-next-meta,
  .robot-next-meta,
  .speaker-next-meta,
  .humanoid-next-meta,
  .air-next-meta,
  .hp-next-meta,
  .ar-next-meta {
    display: none !important;
  }
}

@media (max-width: 420px) {
  .kv-hero,
  .robot-hero,
  .speaker-hero,
  .humanoid-hero,
  .air-hero,
  .headphone-hero,
  .ar-hero {
    min-height: 58svh !important;
  }

  .kv-section,
  .robot-section,
  .speaker-section,
  .humanoid-section,
  .air-section,
  .hp-section,
  .ar-section {
    padding-top: 36px !important;
    padding-bottom: 40px !important;
  }
}

/* ======================================================================
   V78 MOBILE SELF-CHECK FIX · desktop unchanged
   修复点：
   1) 不再把 hp/ar/humanoid 的整段 story/split section 当图片容器压成 16:9；
   2) 图片未放入时，移动端占位底色改成干净纯色，避免斜纹/渐变看起来像乱码；
   3) 保留 16:9 图片完整显示、手机端短文案模式、电脑端当前效果不动。
   ====================================================================== */
@media (max-width: 640px) {
  /* Story / split 是页面段落，不是图片框；必须恢复正常文档流，避免图文被裁切。 */
  .hp-story-screen,
  .ar-story-screen,
  .humanoid-story-screen,
  .hp-split-screen,
  .ar-split-screen {
    width: 100% !important;
    max-width: 100% !important;
    aspect-ratio: auto !important;
    height: auto !important;
    min-height: auto !important;
    overflow: visible !important;
  }

  .hp-story-screen,
  .ar-story-screen,
  .hp-split-screen,
  .ar-split-screen {
    display: block !important;
    align-items: initial !important;
  }

  /* 正文真正的图片框继续保持 16:9 + contain，保证完整、不裁切。 */
  .kv-placeholder,
  .robot-placeholder,
  .speaker-placeholder,
  .humanoid-placeholder,
  .air-placeholder,
  .hp-placeholder,
  .ar-placeholder,
  .air-story-split-media {
    width: 100% !important;
    max-width: 100% !important;
    aspect-ratio: 16 / 9 !important;
    height: auto !important;
    min-height: auto !important;
    overflow: hidden !important;
    border-radius: 0 !important;
  }

  .kv-placeholder > img.project-image,
  .robot-placeholder > img.project-image,
  .speaker-placeholder > img.project-image,
  .humanoid-placeholder > img.project-image,
  .air-placeholder > img.project-image,
  .hp-placeholder > img.project-image,
  .ar-placeholder > img.project-image,
  .air-story-split-media > img.project-image {
    width: 100% !important;
    height: 100% !important;
    object-fit: contain !important;
    object-position: center center !important;
    transform: none !important;
  }

  /* 未放图时的占位背景：纯色，不用斜纹/渐变，避免“底色乱码”。 */
  .kv-placeholder:not(.has-image),
  .speaker-placeholder:not(.has-image),
  .air-placeholder:not(.has-image),
  .hp-placeholder:not(.has-image),
  .ar-placeholder:not(.has-image),
  .humanoid-placeholder:not(.has-image) {
    background: #f3f3f4 !important;
  }

  .robot-placeholder:not(.has-image),
  .kv-section.black .kv-placeholder:not(.has-image),
  .hp-section.dark .hp-placeholder:not(.has-image),
  .ar-section.dark .ar-placeholder:not(.has-image),
  body[data-pid="humanoid"] .humanoid-placeholder:not(.has-image) {
    background: #080808 !important;
  }

  .speaker-section.soft .speaker-placeholder:not(.has-image),
  .speaker-section .speaker-placeholder:not(.has-image),
  .air-section .air-placeholder:not(.has-image),
  .hp-section.white .hp-placeholder:not(.has-image),
  .ar-section.white .ar-placeholder:not(.has-image),
  .kv-section.white .kv-placeholder:not(.has-image) {
    background: #f4f4f5 !important;
  }

  /* 图文成组：图片下方只保留编号 + 一句标题，避免文案漂到别处。 */
  .hp-story-screen .hp-caption,
  .ar-story-screen .ar-caption,
  .hp-split-screen .hp-split-copy,
  .ar-split-screen .ar-split-copy {
    margin-top: 10px !important;
    padding-top: 0 !important;
  }

  .hp-story-screen .hp-section-head,
  .ar-story-screen .ar-section-head,
  .hp-split-screen .hp-section-head,
  .ar-split-screen .ar-section-head {
    display: none !important;
  }
}

/* ======================================================================
   V79 MOBILE COPY HIERARCHY UNIFICATION · desktop unchanged
   目标：统一所有产品页手机端作品图片下方文案层级。
   规则：每张图只显示 2 层信息：
   1) 一级标记：01 / 10 这种统一编号；
   2) 二级标题：中文短标题，不再混用英文、段落、色卡或 section-title。
   说明：桌面端仍读取原 HTML 文案；手机端读取 data-mobile-num / data-mobile-title。
   ====================================================================== */
@media (max-width: 640px) {
  .mobile-copy-unit {
    display: block !important;
    width: 100% !important;
    max-width: 100% !important;
    margin: 10px 0 0 0 !important;
    padding: 0 !important;
    border: 0 !important;
    background: transparent !important;
    text-align: left !important;
  }

  .mobile-copy-unit > * {
    display: none !important;
  }

  .mobile-copy-unit::before {
    content: attr(data-mobile-num) !important;
    display: block !important;
    margin: 0 0 4px 0 !important;
    font-family: var(--font-en) !important;
    font-size: 7.8px !important;
    line-height: 1.35 !important;
    letter-spacing: 0.16em !important;
    font-weight: 500 !important;
    text-transform: uppercase !important;
    color: currentColor !important;
    opacity: 0.46 !important;
    -webkit-text-fill-color: currentColor !important;
  }

  .mobile-copy-unit::after {
    content: attr(data-mobile-title) !important;
    display: block !important;
    max-width: 17em !important;
    font-family: var(--font-cn) !important;
    font-size: 12.2px !important;
    line-height: 1.38 !important;
    letter-spacing: 0.015em !important;
    font-weight: 500 !important;
    color: currentColor !important;
    opacity: 0.94 !important;
    -webkit-text-fill-color: currentColor !important;
  }

  /* KV 第二张原来是 kv-focus-text，手机端也纳入同一套“编号 + 短标题”。 */
  .kv-focus {
    display: block !important;
  }

  .kv-focus .kv-placeholder {
    margin-bottom: 0 !important;
  }

  .kv-focus-text.mobile-copy-unit {
    margin-top: 10px !important;
  }

  .kv-focus-text.mobile-copy-unit .kv-focus-title,
  .kv-focus-text.mobile-copy-unit p,
  .kv-focus-text.mobile-copy-unit .kv-palette {
    display: none !important;
  }

  /* 人形机器人之前用 section-title，当成另一套模板；现在统一回 caption。 */
  body[data-pid="humanoid"] .humanoid-story-screen .humanoid-section-head {
    display: none !important;
  }

  body[data-pid="humanoid"] .humanoid-story-screen .humanoid-caption.mobile-copy-unit {
    display: block !important;
    order: 2 !important;
    margin-top: 10px !important;
    padding-top: 0 !important;
  }

  body[data-pid="humanoid"] .humanoid-story-screen .humanoid-placeholder {
    order: 1 !important;
    margin-bottom: 0 !important;
  }

  /* 耳机 / AR / 空净 split 模块也统一成同一套文案，不再显示带英文后缀的编号。 */
  .air-story-split-copy.mobile-copy-unit,
  .hp-split-copy.mobile-copy-unit,
  .ar-split-copy.mobile-copy-unit {
    display: block !important;
    margin-top: 10px !important;
    padding: 0 !important;
  }

  .air-story-split-copy.mobile-copy-unit > *,
  .hp-split-copy.mobile-copy-unit > *,
  .ar-split-copy.mobile-copy-unit > * {
    display: none !important;
  }

  /* 防止旧规则把同页 section-head 或长段落再次显示出来。 */
  .kv-section-head,
  .robot-section-head,
  .speaker-section-head,
  .air-section-head,
  .hp-section-head,
  .ar-section-head,
  .humanoid-section-head,
  .kv-desc,
  .robot-desc,
  .speaker-desc,
  .humanoid-desc,
  .air-desc,
  .hp-desc,
  .ar-desc,
  .kv-caption p,
  .robot-caption p,
  .speaker-caption p,
  .humanoid-caption p,
  .air-caption p,
  .hp-caption p,
  .ar-caption p,
  .air-story-split-copy p,
  .hp-split-copy p,
  .ar-split-copy p,
  .kv-palette,
  .swatches,
  .kv-palette-title,
  .kv-palette-note {
    display: none !important;
  }
}

/* ======================================================================
   V81 MOBILE IMAGE LOADING FIX · desktop unchanged
   问题：旧规则在手机端把 not(.has-image) 的 lazy 图片 display:none，
   可能导致移动端 lazy 图片不进入可见区域，onload 不触发，父级永远得不到 has-image。
   修复：手机端先允许 img 本身参与布局和加载；真正 404 的图片仍由 onerror 加 hidden 后隐藏。
   ====================================================================== */
@media (max-width: 640px) {
  .kv-placeholder:not(.has-image) > img.project-image,
  .robot-placeholder:not(.has-image) > img.project-image,
  .speaker-placeholder:not(.has-image) > img.project-image,
  .humanoid-placeholder:not(.has-image) > img.project-image,
  .air-placeholder:not(.has-image) > img.project-image,
  .hp-placeholder:not(.has-image) > img.project-image,
  .ar-placeholder:not(.has-image) > img.project-image,
  .hp-story-screen:not(.has-image) > img.project-image,
  .ar-story-screen:not(.has-image) > img.project-image,
  .humanoid-story-screen:not(.has-image) > img.project-image,
  .air-story-split-media:not(.has-image) > img.project-image,
  .hp-split-screen:not(.has-image) > img.project-image,
  .ar-split-screen:not(.has-image) > img.project-image {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
  }

  img.project-image[hidden],
  .kv-placeholder:not(.has-image) > img.project-image[hidden],
  .robot-placeholder:not(.has-image) > img.project-image[hidden],
  .speaker-placeholder:not(.has-image) > img.project-image[hidden],
  .humanoid-placeholder:not(.has-image) > img.project-image[hidden],
  .air-placeholder:not(.has-image) > img.project-image[hidden],
  .hp-placeholder:not(.has-image) > img.project-image[hidden],
  .ar-placeholder:not(.has-image) > img.project-image[hidden] {
    display: none !important;
    visibility: hidden !important;
    opacity: 0 !important;
  }
}

/* Section 7 / AR only: mixed source ratios, no 16:9 lock on desktop-sized mobile layouts. */
@media (max-width: 920px) {
  body[data-pid="ar"] .ar-story-screen,
  body[data-pid="ar"] .ar-split-screen {
    aspect-ratio: auto !important;
    min-height: auto !important;
    height: auto !important;
    display: block !important;
    align-items: initial !important;
    overflow: visible !important;
  }

  body[data-pid="ar"] .ar-placeholder,
  body[data-pid="ar"] .ar-placeholder.landscape,
  body[data-pid="ar"] .ar-placeholder.portrait,
  body[data-pid="ar"] .ar-placeholder.tall {
    width: 100% !important;
    max-width: 100% !important;
    aspect-ratio: auto !important;
    height: auto !important;
    min-height: 0 !important;
    overflow: visible !important;
  }

body[data-pid="ar"] .ar-placeholder > img.project-image,
  body[data-pid="ar"] .ar-story-screen img.project-image,
  body[data-pid="ar"] .ar-split-screen img.project-image {
    position: static !important;
    inset: auto !important;
    display: block !important;
    width: 100% !important;
    height: auto !important;
    object-fit: contain !important;
    object-position: center center !important;
    transform: none !important;
  }
}

/* ======================================================================
   V82 HERO + DIRECTORY FILL UPDATE
   Scope: top hero visuals and home directory thumbnails only.
   Keep body project images, especially Section 7 / AR real-ratio images,
   on their existing contain / natural-ratio rules.
   ====================================================================== */
.hero-bg {
  background-image:
    repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.035) 0 1px, transparent 1px 18px),
    linear-gradient(135deg, #141b28 0%, #070a10 55%, #020305 100%) !important;
}

.hero-bg::before {
  content: "";
  position: absolute;
  inset: -8%;
  z-index: 0;
  background-image: var(--hero-cover);
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  transform: scale(1.01);
  transform-origin: center center;
  pointer-events: none;
}

.hero-bg::after {
  z-index: 1;
  background:
    linear-gradient(180deg, rgba(3, 8, 15, 0.34) 0%, rgba(3, 8, 15, 0.58) 68%, rgba(3, 8, 15, 0.98) 100%),
    linear-gradient(90deg, rgba(0, 0, 0, 0.68) 0%, rgba(0, 0, 0, 0.28) 42%, rgba(0, 0, 0, 0.40) 100%),
    rgba(0, 0, 0, 0.18) !important;
}

.hero-bg-label {
  z-index: 2 !important;
}

.project-hero-media img {
  object-fit: cover !important;
  object-position: center center !important;
  transform: scale(1.18) !important;
}

.fan-card-inner {
  padding: 0 !important;
}

.fan-card-inner::before {
  inset: -7% !important;
  background-size: cover !important;
  background-position: center center !important;
  background-repeat: no-repeat !important;
  transform: scale(1.01) !important;
}

.fan-card:hover .fan-card-inner::before {
  transform: scale(1.055) !important;
}

.fan-card-foot {
  min-height: clamp(56px, 4.4vw, 66px) !important;
  padding: 12px 14px 13px !important;
}

@media (max-width: 720px) {
  .hero-bg::before {
    inset: -12%;
  }

  .project-hero-media img {
    transform: scale(1.22) !important;
  }

  .fan-card-inner::before {
    inset: -10% !important;
  }

  .fan-card-foot {
    min-height: 56px !important;
    padding: 10px 12px 12px !important;
  }
}

/* ======================================================================
   V83 AR HERO COVER STRUCTURE FIX
   AR hero should use the same contained cover-frame behavior as the
   previous product chapters. This only scopes the top hero cover layer;
   Section 7 body images keep their real-ratio / contain logic above.
   ====================================================================== */
body[data-pid="ar"] .ar-hero {
  position: relative !important;
  overflow: hidden !important;
  background: #070707 !important;
  color: #ffffff !important;
  isolation: isolate !important;
}

body[data-pid="ar"] .ar-hero .project-hero-media {
  position: absolute !important;
  inset: 0 !important;
  width: 100% !important;
  height: 100% !important;
  z-index: 0 !important;
  overflow: hidden !important;
}

body[data-pid="ar"] .ar-hero .project-hero-media img {
  width: 100% !important;
  height: 100% !important;
  object-fit: cover !important;
  object-position: center center !important;
  transform: scale(1.02) !important;
}

body[data-pid="ar"] .ar-hero-inner {
  position: relative !important;
  z-index: 3 !important;
}

@media (max-width: 720px) {
  body[data-pid="ar"] .ar-hero {
    min-height: 84svh !important;
    padding-top: 92px !important;
    padding-bottom: 58px !important;
  }

  body[data-pid="ar"] .ar-hero .project-hero-media img {
    transform: scale(1.04) !important;
  }
}

/* ======================================================================
   V84 HOME HERO BACKGROUND RESTORE
   Use the original direct layered background on the homepage hero so the
   cover image always renders on desktop and mobile. Keep cover filling;
   avoid the pseudo-element image layer that could disappear in preview.
   ====================================================================== */
body[data-pid="home"] .hero-bg {
  background-image:
    linear-gradient(180deg, rgba(3, 8, 15, 0.34) 0%, rgba(3, 8, 15, 0.58) 68%, rgba(3, 8, 15, 0.98) 100%),
    linear-gradient(90deg, rgba(0, 0, 0, 0.68) 0%, rgba(0, 0, 0, 0.28) 42%, rgba(0, 0, 0, 0.40) 100%),
    url("images/00-home-hero/cover-home-hero.webp"),
    repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.035) 0 1px, transparent 1px 18px),
    linear-gradient(135deg, #141b28 0%, #070a10 55%, #020305 100%) !important;
  background-size: cover, cover, cover, auto, cover !important;
  background-position: center center, center center, center center, center center, center center !important;
  background-repeat: no-repeat, no-repeat, no-repeat, repeat, no-repeat !important;
}

body[data-pid="home"] .hero-bg::before {
  content: none !important;
  display: none !important;
}

/* ======================================================================
   V86 NETLIFY WORKS VISIBILITY + LIGHTBOX
   The home directory must render by default, even if scroll JS never runs.
   Keep this block at the end of the stylesheet so it wins every breakpoint.
   ====================================================================== */
body[data-pid="home"] #works.fan-section {
  display: block !important;
  visibility: visible !important;
  opacity: 1 !important;
  height: auto !important;
  min-height: clamp(560px, 58vw, 820px) !important;
  max-height: none !important;
  overflow: visible !important;
  transform: none !important;
  pointer-events: auto !important;
  position: relative !important;
  z-index: 5 !important;
  isolation: isolate !important;
}

body[data-pid="home"] #works .fan-head,
body[data-pid="home"] #works .fan-stage,
body[data-pid="home"] #works .fan-card,
body[data-pid="home"] #works .fan-card-inner,
body[data-pid="home"] #works .fan-card-foot,
body[data-pid="home"] #works .reveal {
  display: revert !important;
  visibility: visible !important;
  opacity: 1 !important;
  max-height: none !important;
}

body[data-pid="home"] #works .fan-head {
  display: block !important;
  transform: none !important;
}

body[data-pid="home"] #works .fan-stage {
  display: flex !important;
  height: clamp(330px, 38vw, 535px) !important;
  min-height: 330px !important;
  overflow: visible !important;
  pointer-events: auto !important;
  position: relative !important;
  z-index: 1 !important;
}

body[data-pid="home"] #works .fan-card {
  display: flex !important;
  pointer-events: auto !important;
  visibility: visible !important;
  opacity: 1 !important;
}

body[data-pid="home"] #works .fan-card-inner,
body[data-pid="home"] #works .fan-card-foot {
  display: flex !important;
}

@media (max-width: 820px) {
  body[data-pid="home"] #works.fan-section {
    min-height: 540px !important;
    overflow: visible !important;
  }

  body[data-pid="home"] #works .fan-stage {
    height: 360px !important;
    min-height: 360px !important;
    overflow-x: auto !important;
    overflow-y: visible !important;
  }
}

@media (max-width: 640px) {
  body[data-pid="home"] #works.fan-section {
    min-height: 520px !important;
  }

  body[data-pid="home"] #works .fan-stage {
    height: 332px !important;
    min-height: 332px !important;
    overflow-x: auto !important;
    overflow-y: visible !important;
  }
}

img.project-image {
  cursor: zoom-in;
}

.image-lightbox {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 28px;
  background: rgba(0, 0, 0, 0.86);
  overflow: hidden;
  cursor: zoom-out;
  overscroll-behavior: contain;
  touch-action: none;
}

.image-lightbox img {
  display: block;
  max-width: 92vw;
  max-height: 90vh;
  width: auto;
  height: auto;
  object-fit: contain;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.46);
  cursor: zoom-in;
  transform: translate3d(0, 0, 0) scale(1);
  transform-origin: center center;
  user-select: none;
  -webkit-user-drag: none;
  will-change: transform;
  touch-action: none;
}

.image-lightbox.is-zoomed img {
  cursor: grab;
}

.image-lightbox.is-dragging img {
  cursor: grabbing;
}

.image-lightbox-close {
  position: fixed;
  top: 18px;
  right: 18px;
  z-index: 100000;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(255, 255, 255, 0.34);
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.36);
  color: #ffffff;
  font-family: Arial, sans-serif;
  font-size: 30px;
  line-height: 38px;
  text-align: center;
  cursor: pointer;
}

body.lightbox-open {
  overflow: hidden;
  overscroll-behavior: none;
  touch-action: none;
}

@media (max-width: 640px) {
  .image-lightbox {
    padding: 16px;
  }

  .image-lightbox-close {
    top: 12px;
    right: 12px;
    width: 38px;
    height: 38px;
    font-size: 27px;
    line-height: 34px;
  }
}