@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700&family=Noto+Sans+SC:wght@400;500;600;700&display=swap');

:root {
  font-family: Manrope, "Noto Sans SC", "Microsoft YaHei", sans-serif;
  color: #11131a;
  background: #f7f8f9;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  --ink: #0b0d12;
  --muted: #777c86;
  --paper: #f7f8f9;
  --line: rgba(15, 18, 27, .12);
  --acid: #d6ff39;
  --violet: #8c5cff;
  --pink: #ff4b9b;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; background: var(--paper); }
button, input { font: inherit; }
button { border: 0; cursor: pointer; }
button:focus-visible, input:focus-visible { outline: 2px solid var(--violet); outline-offset: 3px; }
img { display: block; width: 100%; }
.app { min-height: 100vh; display: flex; flex-direction: column; overflow: hidden; padding-bottom: 0; }
.audio-engine { display: none; }
.container { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  height: 76px;
  color: white;
  background: rgba(7, 8, 11, .88);
  border-bottom: 1px solid rgba(255,255,255,.08);
  backdrop-filter: blur(16px);
}
.nav-shell { width: min(1240px, calc(100% - 40px)); height: 100%; margin: auto; display: flex; align-items: center; gap: 40px; }
.logo-button { padding: 0; color: white; background: none; }
.logo { display: flex; align-items: center; gap: 11px; font-size: 16px; font-weight: 600; letter-spacing: .08em; white-space: nowrap; }
.logo small { display: block; margin-top: 3px; color: #7d818c; font-size: 7px; letter-spacing: .25em; }
.logo-mark { position: relative; width: 42px; height: 25px; display: inline-flex; align-items: center; }
.logo-mark i { position: absolute; width: 28px; height: 18px; border: 1px solid; border-radius: 50% 8% 50% 8%; transform: skewX(-24deg); }
.logo-mark i:nth-child(1) { left: 0; color: #ff4b9b; }
.logo-mark i:nth-child(2) { left: 7px; color: #8c5cff; }
.logo-mark i:nth-child(3) { left: 14px; color: #5cddff; }
.main-nav { display: flex; align-items: stretch; justify-content: center; gap: 5px; margin-left: auto; height: 100%; }
.main-nav button { position: relative; padding: 0 16px; color: #afb2ba; background: none; font-size: 13px; transition: color .2s; }
.main-nav button:hover, .main-nav button.active { color: white; }
.main-nav button.active::after { content: ""; position: absolute; inset: auto 16px 0; height: 2px; background: linear-gradient(90deg, var(--pink), var(--violet)); }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.vip-link { display: flex; align-items: center; gap: 6px; padding: 8px 10px; color: white; background: none; }
.vip-link b { color: #ff6b23; font-size: 21px; font-style: italic; }
.vip-link span, .user-button span { font-size: 12px; }
.user-button { display: flex; gap: 7px; align-items: center; padding: 9px 12px; color: white; background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.1); border-radius: 999px; }
.download-history-button { position: relative; display: flex; align-items: center; gap: 7px; padding: 8px 10px; color: #fff; background: none; font-size: 11px; }
.download-history-button b { min-width: 17px; height: 17px; display: grid; place-items: center; padding: 0 4px; color: #090b0f; background: var(--acid); border-radius: 999px; font-size: 9px; }
.menu-button { display: none; padding: 8px; color: white; background: none; }

.hero { position: relative; min-height: 760px; display: grid; place-items: center; color: white; background-image: linear-gradient(90deg, rgba(4,5,7,.93), rgba(4,5,7,.48) 55%, rgba(4,5,7,.8)), url('./assets/hero.jpg'); background-size: cover; background-position: center top; }
.hero::after { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 72% 45%, rgba(126,75,255,.15), transparent 25%), linear-gradient(0deg, #08090d 0%, transparent 25%); pointer-events: none; }
.hero-noise { position: absolute; inset: 0; opacity: .12; background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.6'/%3E%3C/svg%3E"); }
.hero-content { position: relative; z-index: 2; width: min(1180px, calc(100% - 48px)); padding-top: 80px; }
.hero-kicker { display: flex; align-items: center; gap: 10px; color: #cbcdd3; font-size: 12px; letter-spacing: .28em; }
.hero-kicker i { width: 34px; height: 1px; background: var(--acid); }
.hero h1 { max-width: 780px; margin: 27px 0 23px; font-size: clamp(55px, 7vw, 94px); line-height: 1.04; letter-spacing: -.055em; }
.hero h1 em { color: transparent; -webkit-text-stroke: 1px rgba(255,255,255,.75); font-style: normal; }
.hero p { max-width: 560px; color: #b5b8c0; font-size: 16px; line-height: 1.9; }
.hero-buttons { display: flex; gap: 12px; margin-top: 36px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 9px; min-height: 48px; padding: 0 23px; border-radius: 2px; font-weight: 600; transition: transform .2s, background .2s, color .2s; }
.button:hover { transform: translateY(-2px); }
.button.primary { color: #090b0f; background: var(--acid); }
.button.ghost { color: white; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.3); }
.button.outline { color: inherit; background: transparent; border: 1px solid currentColor; }
.button.light { color: #0a0c10; background: white; }
.hero-stats { display: flex; gap: 52px; margin-top: 63px; color: #737680; font-size: 11px; letter-spacing: .08em; text-transform: uppercase; }
.hero-stats span { display: flex; flex-direction: column; gap: 4px; }
.hero-stats b { color: white; font-size: 18px; letter-spacing: 0; }
.hero-scroll { position: absolute; z-index: 3; right: 32px; bottom: 42px; display: flex; flex-direction: column; align-items: center; gap: 10px; color: #70737d; font-size: 8px; letter-spacing: .25em; writing-mode: vertical-rl; }
.hero-scroll i { width: 1px; height: 48px; background: linear-gradient(white, transparent); }

.section { padding: 112px 0; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 50px; margin-bottom: 48px; }
.section-heading > div { max-width: 650px; }
.eyebrow { display: inline-block; margin-bottom: 12px; color: #868a93; font-size: 10px; font-weight: 700; letter-spacing: .26em; }
.section-heading h2 { margin: 0; font-size: clamp(34px, 4vw, 50px); letter-spacing: -.04em; }
.section-heading p { max-width: 410px; margin: 0 0 5px; color: var(--muted); line-height: 1.8; }
.section-heading.inverse { color: white; }
.section-heading.inverse p { color: #8d919b; }
.track-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 34px 20px; }
.free-section .track-grid { grid-template-columns: repeat(5, 1fr); }
.track-card { position: relative; min-width: 0; }
.cover-button { position: relative; width: 100%; aspect-ratio: 1; padding: 0; overflow: hidden; background: #16181e; }
.cover-button img { height: 100%; object-fit: cover; transition: transform .45s ease, filter .45s; }
.cover-shade { position: absolute; inset: 0; opacity: 0; background: rgba(5,7,10,.45); transition: opacity .25s; }
.play-orbit { position: absolute; inset: 50% auto auto 50%; width: 52px; height: 52px; display: grid; place-items: center; color: #0b0d11; background: var(--acid); border-radius: 50%; opacity: 0; transform: translate(-50%, -42%) scale(.75); transition: .25s; }
.duration { position: absolute; right: 10px; bottom: 10px; padding: 3px 7px; color: white; background: rgba(4,5,7,.65); border-radius: 2px; font-size: 10px; opacity: 0; transition: .25s; }
.track-card:hover .cover-button img, .track-card.is-active .cover-button img { transform: scale(1.055); filter: saturate(1.15); }
.track-card:hover .cover-shade, .track-card:hover .duration, .track-card.is-active .cover-shade, .track-card.is-active .duration { opacity: 1; }
.track-card:hover .play-orbit, .track-card.is-active .play-orbit { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.track-meta { padding: 15px 28px 0 1px; }
.track-title { max-width: 100%; padding: 0; overflow: hidden; color: inherit; background: none; font-size: 13px; font-weight: 700; text-overflow: ellipsis; white-space: nowrap; }
.track-meta > span { display: block; margin-top: 4px; color: #888c94; font-size: 11px; }
.track-tags { display: flex; gap: 5px; margin-top: 10px; }
.track-tags i { padding: 3px 7px; color: #777b84; background: rgba(100,105,116,.08); border-radius: 2px; font-size: 9px; font-style: normal; }
.heart { position: absolute; right: 0; bottom: 31px; padding: 4px; color: #a1a4aa; background: none; }
.heart.active { color: #f75a9a; }
.commercial-section { color: white; background: #0a0c11; }
.commercial-section .track-card { color: white; }
.commercial-section .track-tags i { color: #8f9299; background: rgba(255,255,255,.06); }
.center-action { margin-top: 56px; text-align: center; }

.feature-strip { display: grid; grid-template-columns: 1.25fr .75fr; min-height: 530px; background: #dce2e4; }
.feature-image { overflow: hidden; }
.feature-image img { height: 100%; object-fit: cover; filter: saturate(.82) contrast(1.05); }
.feature-copy { display: flex; flex-direction: column; justify-content: center; padding: 70px max(50px, 8vw); background: #dfe5e7; }
.feature-copy h2 { margin: 8px 0 22px; font-size: clamp(40px, 5vw, 68px); line-height: 1.08; letter-spacing: -.06em; }
.feature-copy p { color: #5e646b; line-height: 1.9; }
.text-link { display: flex; align-items: center; gap: 10px; width: max-content; padding: 12px 0 7px; color: #12141a; background: none; border-bottom: 1px solid; font-weight: 700; }
.vip-banner { display: flex; justify-content: space-between; align-items: end; gap: 30px; padding: 85px max(24px, calc((100% - 1180px)/2)); color: white; background: linear-gradient(120deg, #7350ff, #a84edb 55%, #ff4b87); }
.vip-banner h2 { margin: 3px 0 8px; font-size: clamp(38px, 5vw, 62px); letter-spacing: -.05em; }
.vip-banner p { margin: 0; color: rgba(255,255,255,.76); }

.page-banner { min-height: 425px; display: grid; place-items: end center; padding: 0 24px 58px; margin-top: 76px; color: white; text-align: center; background: linear-gradient(rgba(5,7,10,.56), rgba(5,7,10,.88)), url('./assets/studio-banner.jpg') center/cover; }
.page-banner h1 { margin: 8px 0; font-size: clamp(47px, 6vw, 74px); letter-spacing: -.05em; }
.page-banner span { color: var(--acid); font-size: 10px; letter-spacing: .28em; }
.page-banner p { color: #b5b8c0; }
.catalog-content { padding: 64px 0 110px; }
.catalog-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 22px; padding-bottom: 28px; border-bottom: 1px solid var(--line); }
.category-tabs { display: flex; gap: 6px; flex-wrap: wrap; }
.category-tabs button { padding: 8px 12px; color: #747983; background: transparent; border-radius: 2px; font-size: 12px; }
.category-tabs button.active { color: #11131a; background: var(--acid); font-weight: 700; }
.search-box { display: flex; align-items: center; gap: 8px; min-width: 260px; padding: 9px 12px; background: white; border: 1px solid var(--line); }
.search-box input { width: 100%; border: 0; outline: 0; background: transparent; font-size: 12px; }
.result-note { display: flex; justify-content: space-between; margin: 27px 0; color: #8a8e96; font-size: 11px; }
.empty-state { padding: 100px 20px; color: #7e828b; text-align: center; border: 1px dashed var(--line); }
.empty-state h3 { color: #20232a; }

.membership-page { padding-top: 76px; background: #0a0c11; }
.membership-hero { min-height: 650px; padding: 130px 24px 80px; color: white; text-align: center; background: radial-gradient(circle at 50% 35%, rgba(124,72,255,.36), transparent 33%), linear-gradient(130deg, #08090d, #10121b); }
.membership-hero h1 { margin: 8px 0 18px; font-size: clamp(50px, 7vw, 85px); letter-spacing: -.06em; }
.membership-hero p { color: #9da1aa; }
.price { display: flex; justify-content: center; align-items: baseline; margin: 35px 0; }
.price sup { color: var(--acid); font-size: 22px; }
.price strong { color: var(--acid); font-size: 92px; line-height: 1; letter-spacing: -.08em; }
.price span { color: #888d96; }
.benefit-grid { display: grid; grid-template-columns: repeat(4, 1fr); padding: 70px 0 120px; color: white; }
.benefit-grid article { position: relative; min-height: 250px; padding: 30px; border: 1px solid rgba(255,255,255,.1); }
.benefit-grid article + article { border-left: 0; }
.benefit-grid article > span { position: absolute; top: 22px; right: 24px; color: #444751; font-size: 11px; }
.benefit-grid article svg { margin-top: 30px; color: var(--acid); }
.benefit-grid h3 { margin: 45px 0 10px; font-size: 17px; }
.benefit-grid p { color: #7f838c; font-size: 12px; line-height: 1.7; }

.about-page { padding-top: 76px; background: #eef0f1; }
.about-hero { min-height: 620px; display: grid; grid-template-columns: 1.25fr .75fr; align-items: end; gap: 60px; padding: 100px max(24px, calc((100% - 1180px)/2)); color: white; background: linear-gradient(90deg, rgba(5,6,9,.82), rgba(5,6,9,.3)), url('./assets/hero.jpg') center 25%/cover; }
.about-hero h1 { margin: 10px 0 0; font-size: clamp(52px, 7vw, 86px); line-height: 1.07; letter-spacing: -.06em; }
.about-hero p { color: #d0d2d7; line-height: 2; }
.about-story { display: grid; grid-template-columns: 1fr 1fr; gap: 100px; padding: 120px 0 90px; }
.about-story h2 { margin: 6px 0; font-size: 46px; letter-spacing: -.05em; }
.about-story p { margin: 0 0 20px; color: #60656d; line-height: 2; }
.contact-panel { display: grid; grid-template-columns: repeat(3, 1fr); margin-bottom: 100px; background: white; }
.contact-panel div { padding: 34px; border-right: 1px solid var(--line); }
.contact-panel div:last-child { border: 0; }
.contact-panel span { display: block; margin-bottom: 8px; color: #8a8e96; font-size: 10px; }
.contact-panel strong { font-size: 14px; }

.account-guest { min-height: 720px; flex: 1 0 auto; display: grid; place-items: center; padding-top: 76px; text-align: center; background: linear-gradient(140deg, #f7f8f9, #e9edf0); }
.account-guest > div { width: min(520px, calc(100% - 40px)); padding: 70px; background: white; box-shadow: 0 24px 70px rgba(30,35,45,.08); }
.account-guest svg { color: var(--violet); }
.account-guest h1 { margin: 20px 0 10px; font-size: 32px; }
.account-guest p { margin-bottom: 28px; color: var(--muted); }
.account-page { min-height: 750px; flex: 1 0 auto; padding-top: 145px; padding-bottom: 110px; }
.account-head { display: flex; align-items: center; gap: 20px; padding: 35px; color: white; background: #0b0d12; }
.avatar { width: 68px; height: 68px; display: grid; place-items: center; color: #0b0d12; background: var(--acid); border-radius: 50%; font-size: 25px; font-weight: 700; }
.account-head h1 { margin: 2px 0; }
.account-head p, .account-head span { margin: 0; color: #858993; font-size: 12px; }
.account-actions { display: flex; gap: 10px; margin-left: auto; }
.account-head .button { min-height: 42px; }
.account-head .account-logout { color: #b8bbc2; background: rgba(255,255,255,.08); }
.account-head .account-logout:hover { color: #fff; background: rgba(255,255,255,.14); }
.account-stats { display: grid; grid-template-columns: repeat(3, 1fr); margin: 25px 0 70px; background: white; }
.account-stats article { padding: 30px; border-right: 1px solid var(--line); }
.account-stats article:last-child { border: 0; }
.account-stats span { display: block; color: #898d95; font-size: 11px; }
.account-stats strong { display: block; margin-top: 10px; font-size: 26px; }
.download-list > div { display: flex; align-items: center; gap: 16px; padding: 14px; background: white; border-bottom: 1px solid var(--line); }
.download-list img { width: 58px; height: 58px; object-fit: cover; }
.download-list span { display: flex; flex-direction: column; gap: 5px; }
.download-list small { color: #8a8e96; }
.download-list button { display: flex; align-items: center; gap: 7px; margin-left: auto; padding: 9px 12px; color: #30343c; background: #f0f2f3; }

footer { padding: 70px 0 28px; color: white; background: #050609; }
.footer-top { display: flex; justify-content: space-between; gap: 40px; padding-bottom: 50px; }
.footer-top p { color: #6e7179; font-size: 12px; }
.footer-links { display: flex; align-items: center; gap: 30px; }
.footer-links button { color: #8c9098; background: none; font-size: 12px; }
.footer-links button:hover { color: white; }
.footer-bottom { display: flex; justify-content: space-between; padding-top: 25px; color: #555962; border-top: 1px solid rgba(255,255,255,.08); font-size: 10px; }

.modal-backdrop { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; padding: 24px; background: rgba(5,6,8,.75); backdrop-filter: blur(9px); animation: fade .2s; }
.modal { position: relative; width: min(500px, 100%); max-height: calc(100vh - 48px); padding: 48px; overflow: auto; background: white; box-shadow: 0 30px 100px rgba(0,0,0,.35); animation: rise .3s ease; }
.modal-close { position: absolute; top: 16px; right: 16px; padding: 7px; color: #656a72; background: #f0f1f2; border-radius: 50%; }
.login-modal h2, .payment-modal h2 { margin: 3px 0 9px; font-size: 30px; }
.login-modal > p, .payment-modal > p { color: var(--muted); font-size: 13px; }
.login-modal form { display: grid; gap: 18px; margin-top: 30px; }
.login-modal label { display: grid; gap: 7px; color: #5c6068; font-size: 11px; }
.login-modal input { padding: 13px 14px; border: 1px solid var(--line); }
.login-modal .remember-login { display: flex; align-items: center; gap: 8px; width: max-content; cursor: pointer; }
.login-modal .remember-login input { width: 15px; height: 15px; margin: 0; accent-color: var(--violet); }
.login-modal .form-error { margin: -4px 0 0; padding: 10px 12px; color: #a82d3b; background: #fff1f2; border: 1px solid #ffd6da; font-size: 11px; }
.login-modal form .button { width: 100%; margin-top: 7px; }
.login-modal form .button:disabled { cursor: wait; opacity: .65; transform: none; }
.demo-account { width: 100%; margin-top: 16px; padding: 11px; color: #686d76; background: #f4f5f6; font-size: 10px; }
.demo-account b { color: #343840; }
.switch-mode { width: 100%; margin-top: 17px; color: #686d76; background: none; font-size: 11px; }
.track-modal { width: min(860px, 100%); display: grid; grid-template-columns: 1fr 1fr; padding: 0; overflow: hidden; }
.track-modal-cover { position: relative; min-height: 510px; }
.track-modal-cover img { height: 100%; object-fit: cover; }
.track-modal-cover button { position: absolute; inset: 50% auto auto 50%; width: 66px; height: 66px; display: grid; place-items: center; color: #101218; background: var(--acid); border-radius: 50%; transform: translate(-50%, -50%); }
.track-modal-copy { align-self: center; padding: 48px; }
.track-modal-copy h2 { margin: 4px 0 14px; font-size: 36px; letter-spacing: -.05em; }
.track-modal-copy > p { color: #6f747d; font-size: 13px; line-height: 1.8; }
.track-modal-copy dl { margin: 25px 0; border-top: 1px solid var(--line); }
.track-modal-copy dl > div { display: flex; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 11px; }
.track-modal-copy dt { color: #8b8f97; }
.track-modal-copy dd { margin: 0; }
.payment-modal { text-align: center; }
.payment-icon { width: 46px; height: 46px; display: grid; place-items: center; margin: 0 auto 16px; color: #11131a; background: var(--acid); border-radius: 50%; font-weight: 700; }
.payment-modal img { width: 190px; height: 190px; margin: 25px auto 15px; object-fit: cover; }
.payment-total { display: flex; justify-content: space-between; margin: 20px 0; padding: 16px 0; border-block: 1px solid var(--line); }
.payment-total span { color: #7b8088; font-size: 12px; }
.payment-total strong { font-size: 18px; }
.payment-modal .button { width: 100%; }
.payment-modal small { display: block; margin-top: 10px; color: #a0a3aa; }

.player-bar { position: fixed; z-index: 70; inset: auto 18px 18px; min-height: 76px; display: grid; grid-template-columns: 260px 1fr 100px; align-items: center; gap: 24px; padding: 10px 18px; color: white; background: rgba(11,13,18,.95); border: 1px solid rgba(255,255,255,.1); box-shadow: 0 18px 55px rgba(0,0,0,.25); backdrop-filter: blur(18px); }
.player-track { display: flex; align-items: center; gap: 12px; min-width: 0; }
.player-track img { width: 54px; height: 54px; object-fit: cover; }
.player-track span { display: flex; flex-direction: column; min-width: 0; }
.player-track b { overflow: hidden; font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
.player-track small { color: #777b84; }
.player-control { display: grid; grid-template-columns: 42px 1fr auto; align-items: center; gap: 15px; }
.player-toggle { width: 42px; height: 42px; display: grid; place-items: center; color: #0a0c10; background: var(--acid); border-radius: 50%; }
.player-progress { position: relative; width: 100%; height: 5px; display: block; padding: 0; overflow: hidden; background: #4a4e58; border-radius: 999px; cursor: pointer; transition: height .15s ease; }
.player-progress:hover { height: 8px; }
.player-progress i { position: absolute; inset: 0 auto 0 0; display: block; min-width: 2px; height: 100%; background: linear-gradient(90deg, var(--pink), var(--acid)); border-radius: inherit; transition: width .15s linear; }
.player-control > span { color: #7f838c; font-size: 9px; }
.player-side { display: flex; align-items: center; justify-content: end; gap: 14px; color: #878b93; }
.player-side button { padding: 5px; color: inherit; background: none; }
.toast { position: fixed; z-index: 150; top: 94px; left: 50%; display: flex; align-items: center; gap: 9px; padding: 12px 18px; color: #0a0c10; background: var(--acid); box-shadow: 0 15px 40px rgba(0,0,0,.2); transform: translateX(-50%); font-size: 12px; font-weight: 700; animation: drop .25s ease; }

@keyframes fade { from { opacity: 0; } }
@keyframes rise { from { opacity: 0; transform: translateY(18px) scale(.98); } }
@keyframes drop { from { opacity: 0; transform: translate(-50%, -12px); } }

@media (max-width: 1050px) {
  .main-nav button { padding-inline: 9px; }
  .vip-link span, .user-button span, .download-history-button span { display: none; }
  .track-grid { grid-template-columns: repeat(3, 1fr); }
  .free-section .track-grid { grid-template-columns: repeat(3, 1fr); }
  .feature-strip { grid-template-columns: 1fr 1fr; }
  .benefit-grid { grid-template-columns: repeat(2, 1fr); }
  .benefit-grid article:nth-child(3) { border-left: 1px solid rgba(255,255,255,.1); }
  .benefit-grid article:nth-child(n+3) { border-top: 0; }
}
@media (max-width: 780px) {
  .container { width: min(100% - 32px, 620px); }
  .site-header { height: 66px; }
  .nav-shell { width: calc(100% - 28px); }
  .main-nav { position: absolute; inset: 66px 0 auto; display: none; height: auto; padding: 12px 16px 22px; background: rgba(7,8,11,.98); }
  .main-nav.is-open { display: grid; }
  .main-nav button { min-height: 44px; text-align: left; }
  .main-nav button.active::after { inset: 9px auto 9px 0; width: 2px; height: auto; }
  .menu-button { display: block; }
  .vip-link { margin-left: auto; }
  .hero { min-height: 720px; background-position: 40% top; }
  .hero h1 { font-size: 55px; }
  .hero-stats { gap: 25px; }
  .hero-scroll { display: none; }
  .section { padding: 80px 0; }
  .section-heading { display: block; }
  .section-heading p { margin-top: 15px; }
  .track-grid, .free-section .track-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-strip { grid-template-columns: 1fr; }
  .feature-image { height: 370px; }
  .feature-copy { padding: 60px 32px; }
  .vip-banner { display: block; }
  .vip-banner .button { margin-top: 25px; }
  .page-banner { margin-top: 66px; min-height: 350px; }
  .catalog-toolbar { align-items: stretch; flex-direction: column; }
  .search-box { min-width: 0; }
  .about-page, .membership-page { padding-top: 66px; }
  .about-hero { grid-template-columns: 1fr; align-content: end; min-height: 620px; }
  .about-story { grid-template-columns: 1fr; gap: 30px; padding: 80px 0 60px; }
  .contact-panel { grid-template-columns: 1fr; }
  .contact-panel div { border-right: 0; border-bottom: 1px solid var(--line); }
  .account-page { padding-top: 105px; }
  .account-head { align-items: flex-start; flex-wrap: wrap; }
  .account-actions { width: 100%; margin-left: 88px; }
  .footer-top, .footer-bottom { flex-direction: column; }
  .footer-links { align-items: flex-start; flex-direction: column; gap: 15px; }
  .track-modal { grid-template-columns: 1fr; }
  .track-modal-cover { min-height: 280px; max-height: 38vh; }
  .player-bar { inset: auto 8px 8px; grid-template-columns: 1fr auto; gap: 10px; }
  .player-control { grid-column: 1 / -1; grid-row: 2; grid-template-columns: 36px 1fr auto; }
  .player-toggle { width: 36px; height: 36px; }
  .player-side > svg { display: none; }
}
@media (max-width: 500px) {
  .logo small { display: none; }
  .logo { font-size: 14px; }
  .logo-mark { width: 34px; transform: scale(.85); transform-origin: left; }
  .user-button { display: none; }
  .account-actions { margin-left: 0; }
  .hero-content { width: calc(100% - 32px); }
  .hero h1 { font-size: 44px; }
  .hero-buttons { align-items: stretch; flex-direction: column; }
  .hero-stats { justify-content: space-between; gap: 8px; }
  .hero-stats b { font-size: 15px; }
  .track-grid, .free-section .track-grid { gap: 25px 12px; }
  .track-meta { padding-right: 0; }
  .heart { display: none; }
  .benefit-grid { grid-template-columns: 1fr; }
  .benefit-grid article + article { border-left: 1px solid rgba(255,255,255,.1); border-top: 0; }
  .membership-hero { min-height: 600px; }
  .price strong { font-size: 72px; }
  .account-stats { grid-template-columns: 1fr; }
  .account-stats article { border-right: 0; border-bottom: 1px solid var(--line); }
  .download-list button { font-size: 0; }
  .modal { padding: 38px 24px; }
  .track-modal { padding: 0; }
  .track-modal-copy { padding: 30px 24px; }
  .footer-bottom { line-height: 1.8; }
}

/* Reference homepage - mirrors the original business-document UI. */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header.home-header {
  position: absolute;
  height: clamp(76px, 6.3vw, 120px);
  background: transparent;
  border: 0;
  backdrop-filter: none;
}

.home-header .nav-shell {
  position: relative;
  width: 58.4%;
  max-width: 1112px;
  gap: 0;
}

.home-header .logo small,
.home-header .vip-link span,
.home-header .user-button svg { display: none; }

.home-header .logo-button {
  position: absolute;
  left: 0;
}

.home-header .main-nav {
  position: absolute;
  left: 37.2%;
  height: 100%;
  margin: 0;
  gap: 0;
}
.home-header .main-nav button {
  padding-inline: clamp(6px, .55vw, 11px);
  color: rgba(255, 255, 255, .86);
  font-size: clamp(10px, .84vw, 16px);
  font-weight: 600;
}
.home-header .main-nav button.active::after { display: none; }
.home-header .vip-link { padding: 8px 4px; }
.home-header .vip-link b { font-size: clamp(18px, 1.45vw, 28px); }
.home-header .user-button {
  padding: 0;
  color: rgba(255, 255, 255, .9);
  background: none;
  border: 0;
  border-radius: 0;
}
.home-header .user-button span { display: inline; font-size: clamp(10px, .84vw, 16px); }
.home-header .logo {
  gap: clamp(7px, .58vw, 11px);
  font-size: clamp(11px, .84vw, 16px);
}
.home-header .logo-mark {
  width: clamp(30px, 2.42vw, 46px);
  height: clamp(19px, 1.58vw, 30px);
  transform: none;
}
.home-header .logo-mark i {
  width: clamp(21px, 1.68vw, 32px);
  height: clamp(14px, 1.16vw, 22px);
}
.home-header .nav-actions {
  position: absolute;
  right: 4.5%;
  gap: clamp(4px, .36vw, 7px);
}

.hero {
  position: relative;
  display: block;
  width: 100%;
  height: auto;
  min-height: 0;
  aspect-ratio: 1903 / 950;
  background-image: url('./assets/hero-clean.png');
  background-position: center;
  background-repeat: no-repeat;
  background-size: 100% 100%;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, .1);
  pointer-events: none;
}

.hero::after { display: none; }

.hero-code-content {
  position: absolute;
  z-index: 2;
  top: 34.6%;
  left: 50%;
  display: flex;
  align-items: center;
  flex-direction: column;
  width: 46%;
  color: #fff;
  text-align: center;
  transform: translateX(-50%);
}

.hero-code-content::before {
  content: "";
  position: absolute;
  z-index: 0;
  inset: -14% -12% -18%;
  background: rgba(24, 24, 24, .08);
  backdrop-filter: blur(13px);
  -webkit-backdrop-filter: blur(13px);
  -webkit-mask-image: radial-gradient(ellipse at center, #000 48%, transparent 82%);
  mask-image: radial-gradient(ellipse at center, #000 48%, transparent 82%);
  pointer-events: none;
}

.hero-code-content > * {
  position: relative;
  z-index: 1;
}

.hero-code-kicker {
  margin: 0;
  font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: clamp(10px, .85vw, 16px);
  font-weight: 700;
  letter-spacing: .52em;
  text-shadow: 0 1px 4px rgba(0, 0, 0, .45);
}

.hero-code-title {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: clamp(7px, .6vw, 12px);
  margin-top: clamp(16px, 1.6vw, 30px);
  line-height: 1;
}

.hero-code-title strong {
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(35px, 3.15vw, 60px);
  font-weight: 400;
  letter-spacing: .25em;
  padding-left: .25em;
}

.hero-code-title span {
  color: rgba(255, 255, 255, .88);
  font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: clamp(17px, 1.35vw, 26px);
  font-weight: 500;
  letter-spacing: .42em;
  padding-left: .42em;
  text-shadow: 0 1px 6px rgba(0, 0, 0, .6);
}

.hero-code-download {
  width: clamp(126px, 11.2vw, 213px);
  height: clamp(34px, 3vw, 57px);
  margin-top: clamp(32px, 3.1vw, 59px);
  color: #fff;
  background: rgba(0, 0, 0, .08);
  border: 1px solid rgba(255, 255, 255, .86);
  font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: clamp(9px, .72vw, 14px);
  font-weight: 600;
  transition: color .2s ease, background .2s ease;
}

.hero-code-download:hover {
  color: #111;
  background: #fff;
}

.reference-home { background: #fff; }

.home-free-section {
  padding: clamp(66px, 7.2vw, 138px) 0 clamp(72px, 8.2vw, 156px);
  background: #fff;
}

.home-free-container {
  width: 58.4%;
  max-width: 1112px;
  margin: 0 auto;
}

.home-section-title {
  margin-bottom: clamp(44px, 4.4vw, 84px);
  text-align: center;
}

.home-section-title span {
  display: block;
  margin-bottom: 10px;
  color: #777;
  font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: clamp(8px, .7vw, 13px);
}

.home-section-title h2 {
  margin: 0;
  color: #090909;
  font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: clamp(20px, 1.8vw, 34px);
  font-weight: 700;
  letter-spacing: .22em;
}

.home-material-grid {
  display: grid;
  align-items: start;
}

.home-material-grid.free-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 2.3%;
}

.home-material-grid.commercial-grid {
  grid-template-columns: repeat(6, minmax(0, 1fr));
  column-gap: 1.9%;
  row-gap: clamp(42px, 4.2vw, 80px);
}

.home-material-card { min-width: 0; }

.home-cover {
  position: relative;
  display: block;
  width: 100%;
  padding: 0;
  overflow: hidden;
  aspect-ratio: 1;
  background: #e9ecee;
}

.home-cover img {
  height: 100%;
  object-fit: cover;
  transition: transform .35s ease, filter .35s ease;
}

.home-play {
  position: absolute;
  inset: 50% auto auto 50%;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  color: #fff;
  background: rgba(0, 0, 0, .62);
  border: 1px solid rgba(255, 255, 255, .8);
  border-radius: 50%;
  opacity: 0;
  transform: translate(-50%, -50%) scale(.84);
  transition: opacity .2s ease, transform .2s ease;
}

.home-material-card:hover .home-cover img,
.home-material-card.is-active .home-cover img {
  transform: scale(1.035);
  filter: brightness(.82);
}

.home-material-card:hover .home-play,
.home-material-card.is-active .home-play {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.home-track-name {
  display: block;
  width: 100%;
  margin-top: 12px;
  padding: 0;
  overflow: hidden;
  color: #111;
  background: none;
  font-family: Arial, "Noto Sans SC", sans-serif;
  font-size: clamp(8px, .68vw, 13px);
  font-weight: 700;
  text-align: left;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.home-material-card p {
  margin: 5px 0 0;
  color: #777;
  font-size: clamp(7px, .58vw, 11px);
  line-height: 1.7;
}

.free-grid .home-material-card p { text-align: center; }
.free-grid .home-track-name { text-align: center; }

.home-commercial-section {
  padding: clamp(65px, 7vw, 132px) 0 clamp(58px, 6vw, 114px);
  background: #f1f5f6;
}

.home-commercial-container {
  width: 90.5%;
  max-width: 1724px;
  margin: 0 auto;
}

.home-more {
  margin-top: clamp(42px, 4.5vw, 86px);
  text-align: center;
}

.home-more button {
  min-width: clamp(126px, 11vw, 208px);
  height: clamp(34px, 3vw, 55px);
  color: #111;
  background: #fff;
  border: 1px solid #222;
  font-family: "Noto Sans SC", sans-serif;
  font-size: clamp(9px, .72vw, 14px);
}

.site-footer {
  padding: 0;
  background: #030303;
}

.footer-compact {
  position: relative;
  min-height: clamp(74px, 7vw, 130px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 38px;
}

.footer-brand { display: flex; flex-direction: column; gap: 8px; }
.footer-brand .logo { transform: scale(.78); transform-origin: left center; }
.footer-records { position: absolute; left: 50%; display: flex; align-items: center; flex-direction: column; gap: 8px; width: max-content; color: #fff; text-align: center; transform: translateX(-50%); }
.footer-record-links { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; justify-content: center; }
.footer-records a,
.footer-records span { color: #fff; font-size: clamp(8px, .62vw, 11px); text-decoration: none; }
.footer-records a:hover { opacity: .85; }
.footer-records small { font-size: clamp(7px, .55vw, 10px); }
.footer-policy { display: flex; gap: 12px; flex-wrap: wrap; justify-content: flex-end; }
.footer-policy button { padding: 0; color: #fff; background: none; font-size: clamp(8px, .68vw, 12px); }
.footer-policy button:hover { opacity: .85; }

@media (max-width: 780px) {
  .home-header {
    position: fixed;
    height: 66px;
    background: rgba(5, 5, 5, .88);
    backdrop-filter: blur(12px);
  }

  .home-header .nav-shell { width: calc(100% - 28px); }
  .home-header .logo-button { position: static; }
  .home-header .main-nav {
    position: fixed;
    inset: 66px 0 auto;
    width: 100%;
    height: auto;
  }
  .home-header .nav-actions { position: static; margin-left: auto; }
  .hero { margin-top: 66px; aspect-ratio: 1903 / 950; }
  .hero-code-content { top: 31%; width: 75%; }
  .hero-code-kicker { letter-spacing: .35em; }
  .home-free-container, .home-commercial-container { width: calc(100% - 32px); }
  .home-material-grid.free-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px 12px; }
  .home-material-grid.commercial-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px 12px; }
  .home-track-name { font-size: 10px; }
  .home-material-card p { font-size: 9px; }
  .footer-compact { align-items: flex-start; flex-direction: column; padding-block: 28px; }
  .footer-records { position: static; align-self: center; width: 100%; transform: none; }
  .footer-record-links { gap: 8px 12px; }
  .footer-policy { justify-content: flex-start; }
}

@media (max-width: 480px) {
  .hero { aspect-ratio: 1.35; background-size: cover; }
  .home-material-grid.free-grid,
  .home-material-grid.commercial-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .home-section-title { margin-bottom: 34px; }
  .home-free-section, .home-commercial-section { padding-block: 58px; }
}

/* Music library, latest assets and master collections share the PDF reference layout. */
.reference-catalog {
  min-height: 100vh;
  background: #fff;
}

.reference-catalog-hero {
  position: relative;
  width: 100%;
  height: clamp(190px, 20vw, 380px);
  overflow: hidden;
  background-image: linear-gradient(rgba(0, 0, 0, .05), rgba(0, 0, 0, .05)), url('./assets/catalog-hero-clean.png');
  background-position: center;
  background-repeat: no-repeat;
  background-size: 100% 100%;
}

.reference-catalog-heading {
  position: absolute;
  z-index: 2;
  bottom: 0;
  left: 50%;
  width: 28.8%;
  max-width: 548px;
  height: clamp(68px, 6.2vw, 118px);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  color: #080808;
  background: #fff;
  transform: translateX(-50%);
}

.reference-catalog-heading span {
  margin-bottom: clamp(6px, .55vw, 10px);
  color: #777;
  font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: clamp(8px, .65vw, 12px);
}

.reference-catalog-heading h1 {
  margin: 0;
  font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: clamp(20px, 1.7vw, 32px);
  font-weight: 700;
  letter-spacing: .22em;
}

.reference-catalog-content {
  padding: clamp(58px, 5.1vw, 98px) 0 clamp(90px, 8vw, 152px);
  background: #fff;
}

.reference-catalog-container {
  width: 90.5%;
  max-width: 1724px;
  margin: 0 auto;
}

.reference-catalog .track-grid {
  grid-template-columns: repeat(6, minmax(0, 1fr));
  column-gap: 1.9%;
  row-gap: clamp(46px, 4.2vw, 80px);
}

.reference-catalog .cover-button {
  aspect-ratio: 1;
  background: #edf0f1;
}

.reference-catalog .play-orbit {
  width: clamp(36px, 2.7vw, 52px);
  height: clamp(36px, 2.7vw, 52px);
  color: #fff;
  background: rgba(0, 0, 0, .62);
  border: 1px solid rgba(255, 255, 255, .82);
}

.reference-catalog .track-meta {
  padding: clamp(10px, .8vw, 15px) 0 0;
}

.reference-catalog .track-title {
  font-family: Arial, "Noto Sans SC", sans-serif;
  font-size: clamp(8px, .68vw, 13px);
  font-weight: 700;
}

.reference-catalog .track-meta > span {
  margin-top: 5px;
  color: #777;
  font-family: Arial, "Noto Sans SC", sans-serif;
  font-size: clamp(7px, .58vw, 11px);
}

.reference-catalog .track-tags,
.reference-catalog .heart,
.reference-catalog .duration {
  display: none;
}

@media (max-width: 1050px) {
  .reference-catalog .track-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 780px) {
  .reference-catalog-hero {
    height: 190px;
    margin-top: 66px;
    background-size: cover;
  }
  .reference-catalog-heading { width: 68%; }
  .reference-catalog-container { width: calc(100% - 32px); }
  .reference-catalog .track-title { font-size: 10px; }
  .reference-catalog .track-meta > span { font-size: 9px; }
}

@media (max-width: 520px) {
  .reference-catalog .track-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 32px 12px;
  }
}

/* Song detail and QR payment flow. */
.track-detail-content {
  padding: clamp(80px, 8vw, 152px) 0 clamp(90px, 8vw, 152px);
  background: #fff;
}

.track-detail-container {
  width: 96%;
  max-width: 1828px;
  margin: 0 auto;
}

.track-detail-back {
  margin: 0 0 24px;
  padding: 0;
  color: #777;
  background: transparent;
  font-size: 12px;
}

.track-detail-back:hover { color: #111; }

.track-detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(250px, .92fr);
  align-items: start;
  gap: clamp(24px, 2.6vw, 50px);
}

.track-detail-artwork {
  position: relative;
  min-width: 0;
  overflow: visible;
  background: #09122b;
}

.track-detail-artwork > img {
  width: 100%;
  height: clamp(430px, 48vw, 910px);
  object-fit: cover;
}

.track-date {
  position: absolute;
  z-index: 2;
  top: clamp(-30px, -1.5vw, -18px);
  left: 0;
  width: clamp(64px, 6.7vw, 126px);
  height: clamp(88px, 9.5vw, 180px);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  color: #111;
  background: #fff;
  border: 1px solid #222;
}

.track-date strong {
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(27px, 2.7vw, 52px);
  line-height: 1;
}

.track-date span {
  margin-top: 11px;
  font-size: clamp(9px, .85vw, 16px);
  font-weight: 700;
}

.track-detail-side {
  display: grid;
  gap: clamp(24px, 2vw, 38px);
}

.detail-panel {
  color: #111;
  background: #f5f8f9;
  border: 1px solid #d4d9dc;
}

.detail-panel h2 {
  margin: 0;
  padding: clamp(20px, 1.8vw, 34px) clamp(23px, 2.1vw, 40px);
  border-bottom: 1px solid #d4d9dc;
  font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: clamp(18px, 1.55vw, 29px);
}

.detail-info > div {
  padding: clamp(20px, 2vw, 38px) clamp(23px, 2.1vw, 40px);
}

.detail-info p {
  margin: 0 0 18px;
  font-size: clamp(11px, .9vw, 17px);
  line-height: 1.8;
}

.detail-info p:last-child { margin-bottom: 0; }

.detail-actions > div {
  display: flex;
  gap: 12px;
  padding: clamp(24px, 2.4vw, 46px);
}

.detail-actions button,
.detail-payment button {
  min-height: 40px;
  padding: 0 18px;
  color: #222;
  background: #fff;
  border: 1px solid #222;
  font-size: 12px;
}

.detail-actions button:hover,
.detail-payment button:hover {
  color: #fff;
  background: #111;
}

.detail-payment > div {
  display: flex;
  align-items: center;
  flex-direction: column;
  padding: clamp(24px, 2.2vw, 42px);
  text-align: center;
}

.detail-payment img {
  width: min(100%, 230px);
  aspect-ratio: 1;
  object-fit: cover;
}

.detail-payment p {
  margin: 16px 0;
  color: #666;
  font-size: 11px;
}

.detail-payment button {
  width: 100%;
  min-height: 44px;
}

@media (max-width: 900px) {
  .track-detail-container { width: calc(100% - 32px); }
  .track-detail-layout { grid-template-columns: 1fr; }
  .track-detail-artwork > img { height: auto; aspect-ratio: 1.35; }
  .track-detail-side { grid-template-columns: 1fr 1fr; }
  .detail-payment { grid-column: 1 / -1; }
}

@media (max-width: 560px) {
  .track-detail-content { padding-top: 58px; }
  .track-detail-side { grid-template-columns: 1fr; }
  .detail-payment { grid-column: auto; }
}

/* About page company information from the supplied reference. */
.about-reference-content {
  min-height: clamp(430px, 35vw, 670px);
  display: grid;
  place-items: center;
  padding: clamp(76px, 7vw, 134px) 24px;
  background: #fff;
}

.about-reference-inner {
  width: min(980px, 100%);
}

.company-introduction {
  color: #4f5358;
  font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: clamp(14px, .9vw, 17px);
  line-height: 2.05;
  text-align: justify;
}

.company-introduction p {
  margin: 0 0 24px;
  text-indent: 2em;
}

.company-introduction p:last-child { margin-bottom: 0; }

.company-contact-list {
  width: min(400px, 100%);
  display: grid;
  gap: 30px;
  margin: clamp(58px, 5vw, 92px) auto 0;
  color: #666;
  font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

.company-contact-row {
  display: grid;
  grid-template-columns: 36px 1fr;
  align-items: center;
  gap: 30px;
  min-height: 36px;
}

.company-contact-icon {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  color: #222;
  border: 1px solid #222;
}

.company-contact-row p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
}

.company-contact-row small {
  color: inherit;
  font-size: inherit;
}

.company-contact-row a {
  color: inherit;
  text-decoration: none;
}

.company-contact-row a:hover { color: #111; text-decoration: underline; }

@media (max-width: 520px) {
  .company-introduction { line-height: 1.9; text-align: left; }
  .company-contact-list { gap: 24px; }
  .company-contact-row { gap: 18px; }
}