/* =========================================================
   Media — responsive
   ========================================================= */

@media (max-width: 1180px) {
  .nav-links a { padding: 8px 9px; font-size: 12.5px; }
  .brand-name { font-size: 16px; }
  .hero-title { font-size: clamp(2.25rem, 4.5vw, 4.35rem); }
  .c1 { left: 0; }
  .c2 { right: 0; }
  .c3 { left: -1%; }
  .chain { padding: 8px 16px; }
  .chain-line { left: 47px; }
}

@media (max-width: 1200px) {
  .nav-links { display: none; }
  .menu-btn { display: inline-grid; }
  .hero-grid-layout { grid-template-columns: minmax(0, 1fr) minmax(0, .9fr); }
  .hero-visual { min-height: 560px; }
  .o2 { width: 480px; height: 260px; }
  .o1 { width: 400px; height: 400px; }
  .o3 { width: 330px; height: 330px; }
  .float-chip { font-size: 10px; padding: 8px 10px; }
  .bento { gap: 12px; }
  .card-visual { height: 218px; }
  .card-lg .card-visual { height: 274px; }
  .card-copy { padding: 15px 18px 19px; }
}

@media (max-width: 980px) {
  .section { padding: clamp(68px, 9vw, 98px) 0; }
  .hero {
    min-height: auto;
    padding-top: calc(var(--nav-h) + 54px);
    padding-bottom: 88px;
  }
  .hero-grid-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .hero-copy { max-width: 720px; }
  .hero-title { font-size: clamp(2.6rem, 8vw, 4.6rem); }
  .hero-sub { max-width: 620px; }
  .hero-visual { min-height: 600px; margin-top: 6px; }
  .hero-phone { --s: 1 !important; }
  .float-chip { font-size: 11px; }
  .c1 { top: 9%; left: calc(50% - 235px); }
  .c2 { top: 19%; right: calc(50% - 235px); }
  .c3 { bottom: 18%; left: calc(50% - 215px); }
  .c4 { bottom: 8%; right: calc(50% - 215px); }
  .scroll-hint { display: none; }

  .section-head.split { grid-template-columns: 1fr; gap: 30px; }
  .stats-section .section-head.split { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }

  .bento { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .span-7, .span-5, .span-4 { grid-column: span 1; }
  .card-lg .card-visual { height: 260px; }
  .card-visual { height: 230px; }

  .kara-grid { grid-template-columns: 1fr; gap: 46px; }
  .kara-copy .h2 { max-width: 20ch; }
  .kara-visual { min-height: 600px; }
  .kara-actions { margin-top: 26px; }
  .karaoke-section { padding: 80px 0 96px; }

  .gallery-head { align-items: flex-start; }
  .shot { width: 300px; }
  .shot .phone-shell { --s: .88 !important; }

  .tech-head { grid-template-columns: 1fr; }
  .tech-head .h2 { max-width: 22ch; }
  .principles { grid-template-columns: repeat(2, 1fr); gap: 20px 18px; }

  .dl-grid-layout { grid-template-columns: 1fr; }
  .region-card { grid-template-columns: 170px 1fr; }

  .faq-grid { grid-template-columns: 1fr; gap: 34px; }
  .faq-head { position: static; }
  .faq-head .h2 { max-width: 20ch; }
  .faq-art { display: none; }

  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .footer-grid .footer-col:last-child { grid-column: 2 / 4; }
  .footer-word { font-size: clamp(6rem, 24vw, 12rem); }
}

@media (max-width: 820px) {
  .nav-cta { display: none; }
  .region-card { grid-template-columns: 150px 1fr; padding: 18px; }
  .radar { width: 148px; height: 148px; }
  .radar-ring.r3 { width: 142px; height: 142px; }
  .radar-ring.r2 { width: 108px; height: 108px; }
  .radar-core { width: 56px; height: 56px; font-size: 13px; }
  .dl-badge { display: none; }
  .brand-ver { display: none; }
}

@media (max-width: 760px) {
  :root { --nav-h: 64px; }
  .nav { padding: 10px var(--pad); }
  .nav-inner { height: 58px; padding-left: 10px; gap: 10px; }
  .nav.is-scrolled .nav-inner { height: 54px; }
  .brand-name { font-size: 15px; }
  .hero { padding-top: calc(var(--nav-h) + 40px); }
  .hero-title { font-size: clamp(2.3rem, 9.2vw, 3.4rem); }
  .hero-visual { min-height: 540px; }
  .hero-phone { --s: .92 !important; }
  .float-chip { font-size: 10px; }
  .c3 { display: none; }
  .c4 { bottom: 7%; right: calc(50% - 200px); }
  .c1 { top: 7%; left: calc(50% - 215px); }
  .c2 { top: 16%; right: calc(50% - 215px); }

  .bento { grid-template-columns: 1fr; gap: 13px; }
  .card-lg .card-visual, .card-visual { height: 250px; }
  .card-visual { height: 232px; }
  .section-head.center { text-align: left; }
  .section-head.center .lead { margin-left: 0; }

  .stats-grid { column-gap: 18px; }
  .stat-num { font-size: clamp(2rem, 8vw, 2.5rem); }
  .stat-zero { flex-direction: column; align-items: flex-start; gap: 4px; }
  .stat-zero .stat-label { margin-top: 0; }

  .gallery-head { flex-direction: column; align-items: flex-start; gap: 16px; }
  .gallery-tools { width: 100%; justify-content: flex-end; }
  .gallery-track { gap: 14px; }
  .shot { width: 286px; }
  .shot .phone-shell { --s: .84 !important; }
  .shot-frame { border-radius: 26px; padding: 13px 0; }

  .kara-visual { min-height: 560px; }
  .kara-visual .phone-shell { --s: .92 !important; }

  .chain-row { gap: 10px; }
  .chain-tag { display: none; }
  .principles { grid-template-columns: 1fr 1fr; }

  .dl-card { padding: 14px; }
  .dl-txt small { font-size: 9.5px; }
  .steps { gap: 9px; }
  .step-line { width: 18px; }
  .step b { font-size: 9.5px; }

  .footer-grid { grid-template-columns: 1fr 1fr; gap: 26px 20px; }
  .footer-grid .footer-col:last-child { grid-column: auto; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 6px; }

  .lightbox { width: 96vw; }
  .lb-inner { padding: 18px; border-radius: 24px; }
  .lb-stage .phone-shell { --s: 1.05 !important; }
  .lb-nav { width: 38px; height: 38px; }
  .lb-prev { left: 6px; }
  .lb-next { right: 6px; }
}

@media (max-width: 620px) {
  .pill-region { display: none; }
  .pop-region { right: -46px; }
  .lang-grid { grid-template-columns: 1fr; }
  .region-grid { grid-template-columns: 1fr; max-height: 250px; }
  .mm-block .lang-grid,
  .mm-block .region-grid { grid-template-columns: 1fr 1fr; }

  .hero-cta { gap: 9px; }
  .hero-cta .btn { flex: 1 1 auto; min-width: 168px; }
  .hero-micro { font-size: 10px; }
  .float-chip { display: none; }
  .hero-visual { min-height: 500px; margin-top: 10px; }
  .hero-phone { --s: .86 !important; }
  .halo { width: 400px; }
  .o1 { width: 330px; height: 330px; }
  .o2 { width: 380px; height: 220px; }
  .o3 { width: 280px; height: 280px; }

  .region-card { grid-template-columns: 1fr; text-align: left; }
  .radar { display: none; }
  .region-info { width: 100%; }
  .region-hint { grid-column: 1; }
  .region-btns { margin-top: 14px; }

  .dl-card .dl-arrow { width: 30px; height: 30px; }
  .step-line { display: none; }
  .steps { justify-content: flex-start; gap: 12px 18px; }

  .footer-word { font-size: 30vw; margin-top: 30px; }
  .to-top { right: 14px; bottom: 14px; }

  .lb-stage .phone-shell { --s: .92 !important; }
  .lb-stage { min-height: 300px; }
  .lb-cap { font-size: 11px; }
}

@media (max-width: 430px) {
  .nav { padding: 8px 12px; }
  .nav-inner { padding: 0 7px 0 8px; gap: 6px; }
  .nav-actions { gap: 5px; }
  .brand img { width: 28px; height: 28px; }
  .brand-name { font-size: 13px; letter-spacing: -.035em; }
  .brand-ver { display: none; }
  .icon-btn { width: 35px; height: 35px; }
  .pill { height: 35px; padding: 0 9px; }
  .menu-btn { width: 35px; }

  .hero-title { font-size: clamp(2.1rem, 9.6vw, 2.8rem); }
  .hero-sub { font-size: .92rem; }
  .hero-phone { --s: .8 !important; }
  .hero-visual { min-height: 470px; }
  .halo { width: 330px; }
  .o2 { display: none; }

  .stats-grid { grid-template-columns: 1fr 1fr; column-gap: 14px; }
  .stat-label { font-size: 8.5px; letter-spacing: .08em; }
  .h2 { font-size: clamp(1.85rem, 8.4vw, 2.4rem); }
  .card-copy h3 { font-size: 1.15rem; }
  .card-copy p { font-size: .84rem; }
  .card-copy { padding: 14px 16px 17px; }
  .card-visual { height: 210px; }
  .card-lg .card-visual { height: 226px; }
  .format-row span:nth-child(n+6) { display: none; }

  .kara-list li { font-size: 12px; }
  .kara-actions .btn { width: 100%; }
  .chip-note { margin-left: 2px; }
  .kara-visual { min-height: 520px; }
  .kara-visual .phone-shell { --s: .84 !important; }

  .tech-chips span { font-size: 8.5px; }
  .chain { padding: 6px 12px; }
  .chain-line { left: 38px; }
  .chain-idx { display: none; }
  .principles { grid-template-columns: 1fr; gap: 16px; }

  .dl-card { gap: 10px; }
  .dl-ico { width: 36px; height: 36px; }
  .dl-txt b { font-size: 12.5px; }
  .dl-txt small { font-size: 8.5px; }

  .footer-grid { grid-template-columns: 1fr; }
  .footer-col { padding-top: 4px; }
  .footer-word { font-size: 34vw; }
}

/* short viewports */
@media (max-height: 780px) {
  .hero { min-height: auto; }
  .lb-inner { padding: 18px; }
  .lb-stage { min-height: 320px; }
  .lb-stage .phone-shell { --s: .95 !important; }
}
@media (max-height: 700px) {
  .lb-stage .phone-shell { --s: .82 !important; }
}

/* hover-less devices */
@media (hover: none) {
  .card:hover { transform: none; }
  .shot:hover .shot-frame { transform: none; }
  .dl-card:hover { transform: none; }
}

/* 小屏省电：波形柱保留静态高度，不再逐根跑 60fps */
@media (max-width: 620px) {
  .eq i,
  .wave-bars i,
  .k-wave i,
  .mp-wave i,
  .k-art-vinyl,
  .p-vinyl {
    animation: none !important;
  }
  .aurora { animation-duration: 30s; }
  .float-chip { animation-duration: 9s; }
}

/* pricing / play panel */
@media (max-width: 900px) {
  .plans { grid-template-columns: 1fr; gap: 12px; }
  .plan { padding: 20px; }
  .plan-icon { margin: 16px 0 12px; }
  .pricing-foot { flex-direction: column; align-items: flex-start; gap: 14px; }
  .pricing-foot .btn { width: 100%; }
}
@media (max-width: 760px) {
  .dl-play { padding: 14px; }
  .dl-play-badge { font-size: 8px; }
  .dl-mini { padding: 14px; }
}
@media (max-width: 430px) {
  .dl-play-arrow { display: none; }
  .dl-play-mark { width: 40px; height: 40px; border-radius: 11px; }
  .dl-play-txt b { font-size: 15px; }
  .plan { padding: 18px; }
  .plan h3 { font-size: 1.2rem; }
}
@media (max-width: 430px) {
  .dl-play-txt small { display: none; }
}

@media (max-width: 360px) {
  .brand-name { font-size: 12px; letter-spacing: -.045em; }
  .nav-inner { padding-right: 5px; }
}

/* layouts */
@media (max-width: 980px) {
  .layout-grid { grid-template-columns: 1fr; gap: 26px; }
  .layout-visual { max-width: 760px; width: 100%; margin: 0 auto; }
}
@media (max-width: 620px) {
  .layout-item { padding: 14px 0; gap: 11px; }
  .layout-ico { width: 36px; height: 36px; border-radius: 10px; }
  .tablet-frame--main { padding: 8px; border-radius: 20px; }
  .tablet-thumbs { gap: 9px; }
}
@media (max-width: 430px) {
  .tablet-thumbs { grid-template-columns: 1fr; }
}

/* keep the 7-link nav inside the glass pill at 1280–1500 */
@media (max-width: 1500px) {
  .nav-links a { padding: 8px 9px; }
  .nav-inner { gap: 14px; }
}

/* cover designer card */
@media (max-width: 980px) {
  .cover-card { grid-template-columns: 1fr; }
  .cover-art { width: min(46vw, 292px); }
  .cover-studio {
    min-height: 430px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .cover-copy { padding: 28px 24px 32px; }
}
@media (max-width: 620px) {
  .cover-studio { min-height: 390px; padding: 20px 14px; }
  .cover-art { width: clamp(190px, 62vw, 252px); }
  .cover-tools { gap: 7px; padding: 7px 8px; }
  .cover-swatch { width: 22px; height: 22px; }
  .cover-bg-btn { padding: 6px 8px; font-size: 9.5px; }
  .cover-player { right: 10px; bottom: 10px; width: 190px; }
  .is-bg .cover-stage { transform: translateY(-12px); }
  .cover-copy { padding: 22px 18px 26px; }
}
@media (hover: none) {
  .cover-edit-hint { opacity: .9; transform: none; }
}
@media (max-width: 430px) {
  .cover-art { width: min(68vw, 240px); }
  .cover-title { font-size: 1.95rem; }
  .cover-edit-hint { top: 10px; right: 10px; padding: 6px; }
  .cover-edit-hint span { display: none; }
  .cover-tools { flex-direction: column; border-radius: 18px; }
  .cover-player { width: 176px; }
  .cover-points li { font-size: .8rem; }
}


/* first feature card */
.card-lg .visual-lib { height: 302px; }
@media (max-width: 980px) {
  .card-lg .visual-lib { height: 292px; }
}
@media (max-width: 430px) {
  .card-lg .visual-lib { height: 270px; }
  .lib-stage { transform: translateX(-50%) scale(.8); transform-origin: top center; }
}

/* new page structure */
@media (max-width: 1180px) {
  .overview-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .plans { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 980px) {
  .modules-grid { grid-template-columns: 1fr; }
  .module-visual { height: 154px; }
}
@media (max-width: 760px) {
  .overview-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ov-tile { min-height: 128px; }
  .plans { grid-template-columns: 1fr; gap: 12px; }
  .intro-name { font-size: clamp(2rem, 9.2vw, 3rem); }
  .intro-product { font-size: clamp(2rem, 8.4vw, 2.8rem); }
}
@media (max-width: 430px) {
  .overview-grid { gap: 8px; }
  .ov-tile { padding: 12px; border-radius: 15px; }
  .ov-ico { margin-top: 10px; }
  .ov-tile b { padding-top: 11px; font-size: .78rem; }
  .module-body { padding: 16px 16px 18px; }
  .module-body h3 { font-size: 1.08rem; }
  .module-specs li { font-size: 7.2px; }
}

/* module content blocks */
@media (max-width: 980px) {
  .module-block {
    grid-template-columns: 1fr;
    gap: 26px;
    padding: 48px 0;
  }
  .module-block:nth-child(even) .module-visual,
  .module-block:nth-child(even) .module-body { order: 0; }
  .module-block .module-visual { height: 300px; }
  .module-block .module-body h3 { font-size: clamp(1.6rem, 4.2vw, 2.1rem); }
}
@media (max-width: 760px) {
  .module-block { padding: 38px 0; gap: 22px; }
  .module-block .module-visual { height: 260px; border-radius: 22px; }
  .module-block .module-body p { margin-top: 12px; font-size: .9rem; line-height: 1.72; }
  .module-block .module-specs { margin-top: 18px; }
  .module-block .mod-phone { width: 108px; height: 205px; }
  .module-block .mod-tablet { width: min(300px, 82%); }
  .module-block .mod-theme i { width: 112px; height: 144px; }
  .module-block .mod-cover { width: 150px; height: 150px; }
}
@media (max-width: 430px) {
  .module-block .module-visual { height: 230px; }
  .module-block .module-specs { grid-template-columns: 1fr; }
  .module-block .mod-glyph { width: 60px; height: 60px; }
  .module-block .mod-glyph .ic { width: 28px; height: 28px; }
  .module-block .mod-phone { width: 92px; height: 176px; }
  .module-block .mod-tablet { width: min(250px, 86%); }
  .module-block .mod-theme i { width: 92px; height: 118px; }
  .module-block .mod-cover { width: 124px; height: 124px; font-size: 1.5rem; }
}