:root {
  --bg: #f6f7fb; --card: #ffffff; --text: #0f1729; --sub: #536077; --line: #e3e7f0;
  --accent: #4f46e5; --accent-2: #2dd4a8; --ok: #0f9d6a; --warn: #b45309; --warn-bg: #fff7ed;
  --hero-a: #eef0ff; --hero-b: #f6f7fb;
  --radius: 16px; --shadow: 0 10px 30px rgba(31, 41, 90, .08);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1226; --card: #131c36; --text: #ecf1ff; --sub: #9db0d3; --line: #25325a;
    --accent: #8b93ff; --accent-2: #3ddc97; --ok: #3ddc97; --warn: #fbbf77; --warn-bg: #2a2114;
    --hero-a: #16204a; --hero-b: #0b1226; --shadow: 0 10px 30px rgba(0, 0, 0, .35);
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
.platform-current { outline: 2px solid var(--accent); outline-offset: 3px; }
code[data-copy] { cursor: copy; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.65 -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif; }
a { color: var(--accent); }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 20px; }
header.top { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
header.top .wrap { display: flex; align-items: center; gap: 18px; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 18px; color: var(--text); text-decoration: none; }
.brand img { width: 30px; height: 30px; border-radius: 8px; }
nav { margin-left: auto; display: flex; gap: 18px; align-items: center; font-size: 15px; }
nav a { color: var(--sub); text-decoration: none; }
nav a:hover { color: var(--text); }
.lang { border: 1px solid var(--line); border-radius: 999px; padding: 3px 12px; }
.hero { background: linear-gradient(180deg, var(--hero-a), var(--hero-b)); padding: 48px 0 40px; text-align: center; }
.hero.poster { min-height: 100svh; display: flex; align-items: center; padding: 88px 0 28px; }
.hero.poster .wrap { width: 100%; }
.badge { display: inline-block; font-size: 13px; padding: 4px 12px; border-radius: 999px; background: color-mix(in srgb, var(--accent) 14%, transparent); color: var(--accent); font-weight: 600; }
h1 { font-size: clamp(28px, 4.6vw, 48px); line-height: 1.15; margin: 16px 0 10px; letter-spacing: -.02em; }
.lead { font-size: clamp(15px, 2vw, 19px); color: var(--sub); max-width: 680px; margin: 0 auto 20px; }
.poster-feats { list-style: none; display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 10px; margin: 0 0 22px; padding: 0; }
.poster-feats li { background: var(--card); border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px; font-size: 14px; font-weight: 600; box-shadow: var(--shadow); }
.poster-feats li::before { content: "✓ "; color: var(--ok); }
.poster-price { display: flex; justify-content: center; gap: 10px; margin: 0 0 26px; flex-wrap: wrap; }
.price-item { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 10px 20px; box-shadow: var(--shadow); min-width: 84px; }
.price-item .price-name { display: block; font-size: 12px; color: var(--sub); }
.price-item .price { display: block; font-size: 22px; font-weight: 800; color: var(--accent); margin: 2px 0 0; }
@media (max-width: 560px) {
  .hero.poster { padding: 76px 0 20px; }
  .lead { margin-bottom: 16px; }
  .poster-feats { margin-bottom: 16px; }
  .poster-price { margin-bottom: 18px; }
  .price-item { padding: 8px 14px; min-width: 70px; }
  .price-item .price { font-size: 18px; }
}
.cta { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 13px 22px; border-radius: 12px; font-weight: 700; text-decoration: none; border: 1px solid var(--line); background: var(--card); color: var(--text); cursor: pointer; font-size: 16px; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; box-shadow: var(--shadow); }
.btn.disabled { opacity: .55; cursor: not-allowed; }
.btn:focus-visible, a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.hint { color: var(--sub); font-size: 14px; margin-top: 14px; }
section { padding: 56px 0; }
section h2 { font-size: clamp(24px, 3.4vw, 34px); margin: 0 0 8px; letter-spacing: -.01em; }
section .sub { color: var(--sub); margin: 0 0 28px; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); }
.card h3 { margin: 6px 0 6px; font-size: 18px; }
.card p { margin: 0; color: var(--sub); font-size: 15px; }
.num { width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; font-weight: 800; }
.dl { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); }
.dl .card .meta { color: var(--sub); font-size: 14px; margin: 8px 0 14px; }
.dl .card .btn { width: 100%; justify-content: center; }
.dl .card.soon { border-style: dashed; box-shadow: none; }
details { margin-top: 14px; font-size: 13px; color: var(--sub); }
details summary { cursor: pointer; }
code.hash { display: block; word-break: break-all; background: color-mix(in srgb, var(--text) 6%, transparent); padding: 8px 10px; border-radius: 8px; margin-top: 6px; font-size: 12px; }
.notice { background: var(--warn-bg); border: 1px solid color-mix(in srgb, var(--warn) 40%, transparent); color: var(--warn); border-radius: var(--radius); padding: 18px 20px; }
.notice ul { margin: 8px 0 0; padding-left: 20px; }
.notice.promo { background: color-mix(in srgb, var(--accent) 12%, transparent); border-color: color-mix(in srgb, var(--accent) 40%, transparent); color: var(--text); margin-top: 16px; }
.notice.promo .row { margin-top: 10px; }
.price { font-size: 28px; font-weight: 700; color: var(--accent); margin: 4px 0; }
.feat { list-style: none; margin: 16px 0 0; padding: 0; display: grid; gap: 8px; }
.feat li { padding-left: 24px; position: relative; color: var(--text); }
.feat li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 700; }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px 18px; margin: 0 0 10px; color: var(--text); font-size: 16px; }
.faq summary { font-weight: 700; }
.faq p { color: var(--sub); margin: 10px 0 0; }
footer { border-top: 1px solid var(--line); padding: 32px 0 48px; color: var(--sub); font-size: 14px; }
footer .links { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 12px; }
footer a { color: var(--sub); }
.doc { max-width: 780px; margin: 0 auto; padding: 40px 20px 80px; }
.doc h1 { font-size: 32px; text-align: left; }
.doc h2 { font-size: 22px; margin-top: 32px; }
.doc table { border-collapse: collapse; width: 100%; font-size: 14px; margin: 14px 0; display: block; overflow-x: auto; }
.doc th, .doc td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
.doc blockquote { margin: 14px 0; padding: 8px 16px; border-left: 4px solid var(--accent); background: color-mix(in srgb, var(--accent) 8%, transparent); color: var(--sub); }
.doc code { background: color-mix(in srgb, var(--text) 8%, transparent); padding: 1px 6px; border-radius: 6px; font-size: .92em; }
.doc .row { display: flex; gap: 10px; flex-wrap: wrap; margin: 16px 0; }
.doc .sub { color: var(--sub); font-size: 14px; }
.tgtabs { display: flex; gap: 8px; flex-wrap: wrap; margin: 10px 0 20px; }
.tgtab { padding: 8px 14px; border-radius: 10px; border: 1px solid var(--line); background: var(--card); color: var(--sub); font-weight: 600; cursor: pointer; }
.tgtab.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.qrimg { max-width: 240px; width: 100%; border-radius: 8px; }
[data-pane] .card { margin: 10px 0; }
.steps { counter-reset: s; list-style: none; padding: 0; }
.steps li { counter-increment: s; position: relative; padding: 4px 0 14px 44px; }
.steps li::before { content: counter(s); position: absolute; left: 0; top: 2px; width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center; background: var(--accent); color: #fff; font-weight: 800; font-size: 14px; }
@media (max-width: 640px) { nav a.hide-sm { display: none; } .hero { padding: 48px 0 36px; } }

/* Visual refresh: quieter surfaces, clearer hierarchy and touch targets. */
:root {
  --bg: #f7f8fc; --card: #fff; --text: #17213b; --sub: #55647a; --line: #e2e7ef;
  --accent: #4d48ca; --accent-2: #36bfa6; --hero-a: #e9edff; --hero-b: #f7f8fc;
  --radius: 20px; --shadow: 0 12px 32px rgba(32, 46, 89, .06);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101626; --card: #192238; --text: #f1f4ff; --sub: #b0bfd5; --line: #303d55;
    --accent: #a9aaff; --accent-2: #55dfc4; --hero-a: #202b4c; --hero-b: #101626;
    --shadow: 0 12px 32px rgba(0, 0, 0, .18);
  }
}
body { line-height: 1.7; overflow-wrap: anywhere; }
.wrap { max-width: 1160px; padding-inline: 24px; }
header.top .wrap { height: 72px; }
.brand { letter-spacing: -.02em; }
.brand img { width: 36px; height: 36px; border-radius: 11px; }
nav { gap: 26px; font-weight: 600; }
nav a, .btn, .tgtab { transition: color .18s ease, background-color .18s ease, border-color .18s ease, transform .18s ease, box-shadow .18s ease; }
.lang { padding: 6px 14px; }
.hero.poster { min-height: calc(100svh - 72px); padding: 64px 0 70px; background: radial-gradient(ellipse at 50% 0%, var(--hero-a), transparent 70%), var(--hero-b); }
.hero.poster .wrap { max-width: 920px; }
.badge { padding: 6px 14px; letter-spacing: .04em; }
h1 { font-size: clamp(36px, 5.3vw, 64px); line-height: 1.12; letter-spacing: -.04em; margin: 22px auto 18px; max-width: 850px; }
.lead { max-width: 680px; line-height: 1.8; margin-bottom: 28px; }
.poster-feats { gap: 10px; margin-bottom: 30px; }
.poster-feats li { box-shadow: none; padding: 8px 15px; }
.poster-price { max-width: 560px; margin: 0 auto 30px; gap: 10px; flex-wrap: nowrap; }
.price-item { flex: 1; min-width: 0; padding: 15px 12px; box-shadow: none; }
.price-item .price-name { font-size: 13px; }
.price-item .price { font-size: clamp(22px, 3vw, 30px); line-height: 1.25; }
.cta { gap: 10px; }
.btn { justify-content: center; min-height: 48px; border-radius: 12px; padding: 11px 20px; line-height: 1.4; }
.btn:hover:not(.disabled) { transform: translateY(-2px); box-shadow: var(--shadow); border-color: var(--accent); }
.btn.primary { color: var(--card); }
.hint { line-height: 1.6; }
section:not(.hero) { padding: 76px 0; }
section h2 { font-size: clamp(28px, 3.5vw, 40px); line-height: 1.2; letter-spacing: -.035em; }
section .sub { margin: 12px 0 30px; }
.grid, .dl { gap: 18px; }
.card { padding: 26px; min-width: 0; }
.card h3 { margin: 12px 0 8px; font-size: 19px; line-height: 1.35; }
.card p { line-height: 1.75; }
.num { width: 42px; height: 42px; border-radius: 13px; }
#pricing .card { display: flex; flex-direction: column; }
#pricing .card .price { font-size: 36px; line-height: 1.2; margin: 10px 0; }
.notice { padding: 24px; }
.notice.promo { padding: clamp(24px, 4vw, 42px); }
.notice.promo .row { display: flex; flex-wrap: wrap; gap: 10px; }
.faq details { padding: 19px 22px; border-radius: 14px; }
.faq summary { line-height: 1.45; }
footer { padding: 40px 0 56px; }
.doc { max-width: 820px; padding: 48px 24px 90px; }
.doc h1 { font-size: clamp(32px, 5vw, 46px); }
.doc h2 { line-height: 1.3; margin-top: 36px; }
.doc .row { gap: 10px; }
.doc .card { margin-top: 20px; }
.tgtabs { margin-left: 0; }
@media (max-width: 640px) {
  .wrap { padding-inline: 20px; }
  header.top .wrap { height: 64px; gap: 10px; }
  .brand { font-size: 16px; }
  .brand img { width: 32px; height: 32px; }
  nav { gap: 10px; font-size: 14px; }
  .hero.poster { min-height: calc(100svh - 64px); padding: 42px 0 48px; }
  h1 { font-size: clamp(32px, 9vw, 44px); margin: 18px auto 14px; }
  .lead { font-size: 15px; margin-bottom: 20px; }
  .poster-feats { gap: 7px; margin-bottom: 22px; }
  .poster-feats li { font-size: 13px; padding: 6px 10px; }
  .poster-price { margin-bottom: 22px; gap: 8px; }
  .price-item { padding: 12px 6px; }
  .price-item .price { font-size: 22px; }
  .cta .btn { flex: 1 1 160px; }
  section:not(.hero) { padding: 52px 0; }
  .grid, .dl { grid-template-columns: minmax(0, 1fr); }
  .card { padding: 22px; }
  .doc { padding: 32px 20px 64px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}

/* Art direction: an editorial connection canvas. */
:root {
  --bg: #f3f1e9; --card: #fcfbf6; --text: #182824; --sub: #5a6a63; --line: #cdd5c9;
  --accent: #17584a; --accent-2: #b9e96e; --hero-a: #dcebcf; --hero-b: #f3f1e9;
  --warn: #79501b; --warn-bg: #f4e9ce; --radius: 8px; --shadow: 0 18px 45px rgba(22, 45, 34, .07);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101d19; --card: #192b24; --text: #edf4e8; --sub: #b1c2b4; --line: #3a5044;
    --accent: #b9e96e; --accent-2: #6db29a; --hero-a: #25483a; --hero-b: #101d19;
    --warn: #f3cc8f; --warn-bg: #352c1c; --shadow: 0 18px 45px rgba(0, 0, 0, .2);
  }
}
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif; }
.wrap { max-width: 1360px; padding-inline: clamp(22px, 5vw, 72px); }
header.top { background: var(--bg); backdrop-filter: none; }
header.top .wrap { height: 78px; }
.brand { font-size: 19px; letter-spacing: -.04em; }
.brand img { border-radius: 50%; }
nav { font-size: 14px; }
.lang { border-radius: 2px; }
.hero.poster { position: relative; overflow: hidden; min-height: 0; text-align: left; padding: clamp(65px, 8vw, 120px) 0 64px; background: var(--bg); }
.hero.poster .hero-layout { max-width: 1360px; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); align-items: center; gap: 5%; }
.hero-copy { position: relative; z-index: 1; min-width: 0; }
.badge { border: 1px solid var(--line); background: transparent; color: var(--accent); border-radius: 2px; font-size: 11px; text-transform: uppercase; letter-spacing: .12em; }
.hero h1 { max-width: 720px; margin: 30px 0 22px; font-size: clamp(48px, 6.4vw, 91px); font-weight: 800; line-height: 1.06; letter-spacing: -.065em; }
.hero .lead { margin: 0 0 28px; max-width: 570px; font-size: clamp(16px, 1.4vw, 19px); }
.poster-feats { justify-content: flex-start; gap: 8px; margin-bottom: 30px; }
.poster-feats li { background: transparent; border: 0; border-bottom: 1px solid var(--line); border-radius: 0; padding: 7px 12px 7px 0; font-size: 13px; }
.poster-feats li::before { color: var(--accent); }
.poster-price { max-width: 550px; margin: 0 0 28px; gap: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.price-item { text-align: left; border: 0; border-right: 1px solid var(--line); border-radius: 0; background: transparent; padding: 14px 18px; }
.price-item:first-child { padding-left: 0; }
.price-item:last-child { border-right: 0; }
.price-item .price { color: var(--text); font-size: 29px; letter-spacing: -.04em; }
.cta { justify-content: flex-start; }
.btn { border-radius: 3px; font-size: 14px; min-height: 50px; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--card); }
.hero .hint { max-width: 540px; font-size: 12px; }
.hero-art { aspect-ratio: 1; max-width: 620px; width: 100%; position: relative; display: grid; place-items: center; border-radius: 50%; background: radial-gradient(circle, var(--hero-a), transparent 68%); }
.orbit { position: absolute; border: 1px solid var(--line); border-radius: 50%; inset: 8%; }
.orbit-two { inset: 20%; border-color: var(--accent); opacity: .5; }
.orbit-three { inset: 32%; border-style: dashed; }
.orbit-core { width: 29%; aspect-ratio: 1; border-radius: 50%; display: grid; place-items: center; background: var(--accent); color: var(--card); box-shadow: 0 0 0 18px color-mix(in srgb, var(--accent) 10%, transparent); }
.orbit-core span { font-size: clamp(45px, 7vw, 100px); line-height: 1; }
.orbit-dot { position: absolute; width: 13px; height: 13px; background: var(--accent); border: 3px solid var(--bg); border-radius: 50%; }
.dot-one { top: 17%; left: 23%; }.dot-two { right: 17%; top: 35%; }.dot-three { bottom: 18%; left: 41%; }
.art-label { position: absolute; bottom: 6%; right: 3%; font-size: 10px; font-weight: 700; letter-spacing: .18em; color: var(--sub); }
.art-label span { color: var(--accent); }
section:not(.hero) { padding: clamp(72px, 9vw, 132px) 0; }
section h2 { font-size: clamp(38px, 5vw, 66px); font-weight: 750; letter-spacing: -.055em; }
section .sub { max-width: 600px; font-size: 16px; }
.intro-steps { border-top: 1px solid var(--line); }
.intro-steps .grid { gap: 0; border-top: 1px solid var(--line); }
.intro-steps .card { background: transparent; border: 0; border-right: 1px solid var(--line); border-radius: 0; box-shadow: none; padding: 28px 30px 12px 0; }
.intro-steps .card + .card { padding-left: 30px; }
.intro-steps .card:last-child { border-right: 0; }
.intro-steps .num { background: transparent; color: var(--accent); font-size: 15px; border: 1px solid var(--line); border-radius: 50%; }
.intro-steps .card h3 { font-size: 25px; margin-top: 34px; }
#features { background: var(--hero-a); }
#features .grid { grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
#features .card { grid-column: span 2; min-height: 220px; border: 0; border-radius: 0; box-shadow: none; padding: 32px; }
#features .card:nth-child(-n+2) { grid-column: span 3; min-height: 250px; }
#features .card h3 { font-size: clamp(22px, 2.3vw, 30px); letter-spacing: -.03em; margin: 0 0 35px; }
#pricing .grid { gap: 0; border: 1px solid var(--line); }
#pricing .card { border: 0; border-right: 1px solid var(--line); border-radius: 0; box-shadow: none; padding: 34px; }
#pricing .card:last-child { border-right: 0; background: var(--hero-a); }
#pricing .card .price { color: var(--text); font-size: clamp(42px, 5vw, 65px); letter-spacing: -.06em; margin: 28px 0; }
#promo { padding-top: 0; }
.notice.promo { background: var(--accent); color: var(--card); border: 0; border-radius: 0; padding: clamp(36px, 6vw, 80px); }
.notice.promo strong { display: block; font-size: clamp(30px, 4vw, 52px); line-height: 1.2; }
.notice.promo p { max-width: 700px; }
#download { border-top: 1px solid var(--line); }
.dl .card { border-radius: 0; box-shadow: none; }
.faq details { border-radius: 0; border-width: 0 0 1px; background: transparent; padding: 24px 0; }
.doc { max-width: 960px; }
.doc h1 { font-size: clamp(48px, 6vw, 74px); letter-spacing: -.06em; }
.doc .notice { border-radius: 0; padding: 28px; }
#buyApp { border-top: 1px solid var(--line); margin-top: 36px; padding: 24px 0; }
#platformRow .btn { flex: 1 1 150px; min-height: 76px; font-size: 17px; }
footer { background: var(--text); color: var(--bg); }
footer a { color: var(--bg); }
@media (max-width: 800px) {
  .hero.poster .hero-layout { grid-template-columns: 1fr; gap: 12px; }
  .hero-art { width: min(75%, 420px); margin: 0 auto; }
  .hero h1 { max-width: 680px; }
  #features .card { grid-column: span 3; }
  #features .card:last-child { grid-column: span 6; }
}
@media (max-width: 640px) {
  header.top .wrap { height: 64px; }
  .hero.poster { padding: 54px 0 40px; }
  .hero h1 { font-size: clamp(43px, 11vw, 60px); margin: 23px 0 18px; }
  .hero-art { width: 80%; }
  .intro-steps .card, .intro-steps .card + .card { padding: 24px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .intro-steps .card h3 { margin-top: 18px; }
  #features .grid { grid-template-columns: 1fr; }
  #features .card, #features .card:nth-child(-n+2), #features .card:last-child { grid-column: auto; min-height: 0; padding: 26px; }
  #features .card h3 { margin-bottom: 20px; }
  #pricing .card { border-right: 0; border-bottom: 1px solid var(--line); padding: 26px; }
  #pricing .card:last-child { border-bottom: 0; }
  #pricing .card .price { margin: 16px 0; }
}

/* Refined editorial layout */
:root { --bg: #f6f5ef; --card: #fffef9; --text: #152e2b; --sub: #5b6e68; --line: #d6ded4; --accent: #145c50; --accent-2: #c4ec8e; --hero-a: #e5f1d9; --hero-b: #f6f5ef; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #101d1b; --card: #192c27; --text: #eef5e9; --sub: #b4c8bb; --line: #3d554b; --accent: #c4ec8e; --accent-2: #76b7a3; --hero-a: #243f34; --hero-b: #101d1b; }
}
.hero.poster { padding-block: clamp(70px, 8vw, 125px); }
.hero.poster .hero-layout { gap: clamp(30px, 7vw, 100px); }
.hero h1 { font-size: clamp(48px, 5.6vw, 80px); line-height: 1.13; letter-spacing: -.055em; }
.hero .lead { max-width: 540px; margin-bottom: 36px; }
.hero .cta { margin-bottom: 18px; }
.hero-art { aspect-ratio: 1.04; max-width: none; background: transparent; border-radius: 0; }
.art-frame { position: absolute; inset: 0; overflow: hidden; border-radius: 20px; background: var(--hero-a); border: 1px solid var(--line); }
.art-frame::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, color-mix(in srgb, var(--card) 55%, transparent), transparent 60%); }
.art-frame::after { content: ''; position: absolute; width: 42%; aspect-ratio: 1; border-radius: 50%; background: var(--accent-2); filter: blur(55px); opacity: .35; right: -10%; bottom: -10%; }
.art-top { position: absolute; z-index: 2; inset: 26px 30px auto; display: flex; justify-content: space-between; font-size: 10px; font-weight: 800; letter-spacing: .18em; color: var(--accent); }
.art-top span:last-child { letter-spacing: .2em; opacity: .55; }
.orbit { inset: 12%; border-color: color-mix(in srgb, var(--accent) 35%, transparent); }
.orbit-two { inset: 23%; opacity: .7; }
.orbit-three { inset: 33%; }
.orbit-core { position: absolute; left: 36%; top: 36%; width: 28%; box-shadow: 0 0 0 18px color-mix(in srgb, var(--accent) 8%, transparent), 0 20px 45px color-mix(in srgb, var(--accent) 20%, transparent); }
.orbit-core span { font-size: clamp(42px, 5vw, 76px); font-weight: 300; }
.art-label { z-index: 2; bottom: 27px; left: 30px; right: 30px; font-size: 10px; letter-spacing: .08em; }
.dot-one { top: 19%; left: 23%; }.dot-two { right: 20%; top: 38%; }.dot-three { bottom: 19%; left: 43%; }
.intro-steps .grid { margin-top: 48px; }
.intro-steps .card h3 { font-size: 25px; }
#features .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; background: transparent; border: 0; margin-top: 48px; }
#features .card, #features .card:nth-child(-n+2) { grid-column: auto; min-height: 260px; display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 14px; padding: clamp(26px, 3vw, 42px); }
#features .card:nth-child(2), #features .card:nth-child(3) { background: color-mix(in srgb, var(--card) 65%, var(--hero-a)); }
.feature-index { color: var(--accent); font-size: 12px; font-weight: 800; letter-spacing: .12em; margin-bottom: auto; }
#features .card h3 { margin: 35px 0 14px; }
#features .card p { max-width: 430px; }
#pricing .grid { margin-top: 48px; border-radius: 14px; overflow: hidden; }
#pricing .card { min-height: 260px; }
.notice.promo { border-radius: 16px; }
.notice.promo .btn.primary { background: var(--card); border-color: var(--card); color: var(--accent); }
.dl .card { border-radius: 14px; }
.faq { max-width: 1050px; }
.faq h2 { margin-bottom: 32px; }
@media (max-width: 800px) {
  .hero-art { width: min(100%, 500px); }
  #features .card:last-child { grid-column: auto; }
}
@media (max-width: 640px) {
  .hero.poster { padding: 48px 0 60px; }
  .hero.poster .hero-layout { gap: 42px; }
  .hero h1 { font-size: clamp(42px, 10vw, 58px); }
  .hero .lead { margin-bottom: 26px; }
  .art-frame { border-radius: 14px; }
  #features .grid { grid-template-columns: 1fr; gap: 12px; margin-top: 30px; }
  #features .card, #features .card:nth-child(-n+2) { min-height: 210px; }
  #features .card h3 { margin-top: 26px; }
  #pricing .grid { margin-top: 30px; }
}

/* Bonnie: a warmer, product-led visual system. */
:root {
  --bg: #f8f6f1; --card: #fffefa; --text: #201c32; --sub: #696477; --line: #e3dfe7;
  --accent: #5846d9; --accent-2: #f2a894; --hero-a: #eeeafa; --hero-b: #f8f6f1;
  --shadow: 0 18px 50px rgba(48, 35, 91, .08);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141321; --card: #211f32; --text: #f4f0ff; --sub: #bcb5cf; --line: #39354d;
    --accent: #b8a9ff; --accent-2: #f2a894; --hero-a: #29253f; --hero-b: #141321;
    --shadow: 0 18px 50px rgba(0, 0, 0, .24);
  }
}
header.top { background: color-mix(in srgb, var(--bg) 92%, transparent); backdrop-filter: blur(18px); }
header.top .wrap { height: 76px; }
.brand { gap: 11px; font-size: 18px; }
.brand img { border-radius: 12px; }
nav a { position: relative; }
nav a:not(.lang)::after { content: ''; position: absolute; left: 0; right: 100%; bottom: -7px; height: 2px; background: var(--accent); transition: right .2s ease; }
nav a:hover::after { right: 0; }
.lang { border-radius: 999px; }
.hero.poster { padding: clamp(64px, 7vw, 108px) 0 clamp(80px, 9vw, 130px); background: radial-gradient(ellipse at 75% 30%, var(--hero-a), transparent 50%), var(--bg); }
.hero.poster .hero-layout { grid-template-columns: minmax(0, 1fr) minmax(0, .9fr); gap: clamp(45px, 7vw, 100px); }
.badge { border: 0; border-radius: 99px; background: var(--hero-a); padding: 8px 14px; letter-spacing: .08em; }
.badge::before { content: ''; display: inline-block; width: 7px; height: 7px; border-radius: 50%; margin-right: 8px; background: var(--accent); vertical-align: 1px; }
.hero h1 { max-width: 700px; font-size: clamp(49px, 5.5vw, 78px); line-height: 1.15; margin: 26px 0 24px; letter-spacing: -.055em; }
.hero .lead { max-width: 560px; font-size: clamp(16px, 1.3vw, 18px); line-height: 1.85; margin-bottom: 32px; }
.cta { gap: 10px; }
.btn { border-radius: 12px; padding-inline: 20px; }
.hero .cta .btn { min-height: 54px; }
.hero .hint { margin-top: 18px; }
.hero-art { aspect-ratio: 1.05; }
.art-frame { border: 1px solid color-mix(in srgb, var(--accent) 20%, var(--line)); border-radius: 28px; background: linear-gradient(145deg, var(--card), var(--hero-a)); box-shadow: var(--shadow); }
.art-frame::before { background: linear-gradient(125deg, color-mix(in srgb, var(--card) 70%, transparent), transparent 55%); }
.art-frame::after { background: var(--accent-2); width: 48%; opacity: .22; }
.art-top { inset: 25px 28px auto; color: var(--sub); font-size: 10px; }
.connection-visual { position: absolute; left: 12%; right: 12%; top: 14%; bottom: 25%; }
.connection-ring { position: absolute; border-radius: 50%; border: 1px solid color-mix(in srgb, var(--accent) 24%, transparent); inset: 3%; }
.ring-b { inset: 16%; border-style: dashed; }
.ring-c { inset: 29%; border-color: color-mix(in srgb, var(--accent) 45%, transparent); }
.connection-center { position: absolute; inset: 37%; display: grid; place-items: center; border-radius: 50%; background: var(--accent); color: var(--card); box-shadow: 0 0 0 14px color-mix(in srgb, var(--accent) 10%, transparent), 0 16px 35px color-mix(in srgb, var(--accent) 25%, transparent); }
.connection-center span { font-size: clamp(32px, 4vw, 56px); line-height: 1; }
.connection-node { position: absolute; width: 12px; height: 12px; border: 3px solid var(--card); background: var(--accent); border-radius: 50%; box-shadow: 0 2px 8px color-mix(in srgb, var(--accent) 35%, transparent); }
.node-a { left: 14%; top: 22%; }.node-b { right: 14%; top: 38%; }.node-c { bottom: 14%; left: 42%; background: var(--accent-2); }
.art-caption { position: absolute; bottom: 26px; left: 28px; right: 28px; z-index: 2; display: grid; gap: 3px; padding-top: 16px; border-top: 1px solid var(--line); color: var(--sub); font-size: 12px; }
.art-caption span:first-child { color: var(--accent); font-size: 10px; letter-spacing: .12em; font-weight: 800; }
.art-caption strong { color: var(--text); font-size: 18px; }
section h2 { font-size: clamp(36px, 4vw, 56px); }
.intro-steps .grid { gap: 28px; }
.intro-steps .card { border-right: 0; }
.intro-steps .card + .card { padding-left: 0; }
.intro-steps .num { border: 0; background: var(--hero-a); color: var(--accent); }
#features { background: var(--hero-a); }
#features .grid { gap: 14px; }
#features .card, #features .card:nth-child(-n+2) { border-color: transparent; border-radius: 22px; box-shadow: 0 2px 12px color-mix(in srgb, var(--text) 4%, transparent); }
#features .card:nth-child(2), #features .card:nth-child(3) { background: var(--card); }
.feature-index { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 12px; background: var(--hero-a); letter-spacing: 0; }
#pricing .grid { gap: 14px; border: 0; overflow: visible; }
#pricing .card { border: 1px solid var(--line); border-radius: 20px; }
#pricing .card:last-child { border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--line)); background: var(--hero-a); }
#promo { padding-top: 0; }
.notice.promo { background: var(--text); color: var(--bg); border-radius: 24px; }
.notice.promo .btn.primary { color: var(--text); background: var(--bg); border-color: var(--bg); }
.dl .card { border-radius: 20px; }
.faq details { transition: padding .2s ease; }
.faq details[open] { padding-bottom: 30px; }
footer { background: var(--text); color: var(--bg); }
@media (max-width: 800px) {
  .hero.poster .hero-layout { grid-template-columns: 1fr; }
  .hero-art { width: min(100%, 540px); }
}
@media (max-width: 640px) {
  header.top .wrap { height: 64px; }
  .hero.poster { padding: 52px 0 70px; }
  .hero h1 { font-size: clamp(42px, 10vw, 60px); }
  .hero.poster .hero-layout { gap: 38px; }
  .art-frame { border-radius: 22px; }
  .art-caption { bottom: 18px; left: 20px; right: 20px; }
  .art-top { inset: 20px 20px auto; }
  #pricing .card { border: 1px solid var(--line); }
  #features .card, #features .card:nth-child(-n+2) { min-height: 200px; }
}

/* Market landing page */
.announcement { min-height: 42px; padding: 9px 24px; display: flex; justify-content: center; align-items: center; gap: 24px; background: var(--text); color: var(--bg); text-decoration: none; font-size: 13px; font-weight: 700; line-height: 1.4; }
.announcement span:last-child { opacity: .8; font-weight: 500; }
.announcement b { margin-left: 3px; }
.hero.poster { position: relative; isolation: isolate; padding: clamp(72px, 7vw, 110px) 0 clamp(84px, 8vw, 120px); background: radial-gradient(ellipse at 80% 16%, color-mix(in srgb, var(--accent-2) 23%, transparent), transparent 34%), radial-gradient(ellipse at 60% 65%, var(--hero-a), transparent 48%), var(--bg); }
.hero.poster::before { content: ''; z-index: -1; position: absolute; inset: 0; opacity: .23; background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px); background-size: 72px 72px; mask-image: linear-gradient(90deg, transparent 10%, black); }
.hero.poster .hero-layout { grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: clamp(40px, 6vw, 90px); }
.hero h1 { font-size: clamp(48px, 5.2vw, 76px); max-width: 690px; }
.hero .lead { max-width: 570px; }
.hero-benefits { list-style: none; display: flex; flex-wrap: wrap; gap: 9px; padding: 0; margin: 0 0 28px; }
.hero-benefits li { padding: 7px 11px; background: color-mix(in srgb, var(--card) 75%, transparent); border: 1px solid var(--line); border-radius: 8px; font-size: 13px; font-weight: 700; }
.hero-benefits li::before { content: '✦'; margin-right: 7px; color: var(--accent); }
.hero-prices { display: flex; align-items: center; max-width: 510px; border-top: 1px solid var(--line); margin-top: 30px; padding-top: 20px; color: var(--text); text-decoration: none; }
.hero-prices span { flex: 1; display: grid; gap: 3px; padding-left: 20px; border-left: 1px solid var(--line); }
.hero-prices span:first-child { padding-left: 0; border: 0; }
.hero-prices small { color: var(--sub); font-size: 12px; }
.hero-prices strong { font-size: 23px; line-height: 1.2; letter-spacing: -.04em; }
.hero-prices b { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 50%; border: 1px solid var(--line); color: var(--accent); }
.art-frame { background: linear-gradient(150deg, var(--card), var(--hero-a) 68%, color-mix(in srgb, var(--accent-2) 20%, var(--hero-a))); }
.art-frame::before { background: repeating-linear-gradient(0deg, transparent 0 39px, color-mix(in srgb, var(--accent) 8%, transparent) 40px), repeating-linear-gradient(90deg, transparent 0 39px, color-mix(in srgb, var(--accent) 8%, transparent) 40px); mask-image: linear-gradient(transparent, black); }
.connection-ring { box-shadow: 0 0 0 20px color-mix(in srgb, var(--accent) 2%, transparent); }
#promo { padding: 0; margin-top: -28px; position: relative; z-index: 1; }
.notice.promo { display: flex; justify-content: space-between; align-items: end; gap: 30px; padding: clamp(28px, 4vw, 52px); box-shadow: var(--shadow); }
.promo-copy { max-width: 700px; }
.promo-eyebrow { display: block; margin-bottom: 12px; font-size: 10px; font-weight: 800; letter-spacing: .15em; opacity: .7; }
.notice.promo strong { font-size: clamp(28px, 3vw, 42px); }
.notice.promo p { margin-bottom: 0; opacity: .8; font-size: 14px; }
.notice.promo .row { justify-content: flex-end; flex-shrink: 0; }
.notice.promo .btn:not(.primary) { background: transparent; color: var(--bg); border-color: color-mix(in srgb, var(--bg) 40%, transparent); }
.intro-steps { border: 0; }
.intro-steps .grid { margin-top: 36px; }
#features .card:nth-child(1) { background: var(--card); }
#features .card:nth-child(4) { background: color-mix(in srgb, var(--accent-2) 14%, var(--card)); }
@media (max-width: 1000px) {
  .notice.promo { align-items: start; flex-direction: column; }
  .notice.promo .row { justify-content: flex-start; }
}
@media (max-width: 800px) {
  .hero.poster .hero-layout { grid-template-columns: 1fr; }
  .hero-art { width: min(100%, 480px); }
}
@media (max-width: 640px) {
  .announcement { gap: 12px; font-size: 12px; padding-inline: 16px; }
  .hero.poster { padding: 48px 0 70px; }
  .hero h1 { font-size: clamp(40px, 10vw, 56px); }
  .hero-benefits { gap: 6px; }
  .hero-benefits li { font-size: 12px; }
  .hero-prices { margin-top: 22px; }
  .hero-prices span { padding-left: 12px; }
  .hero-prices strong { font-size: 20px; }
  #promo { margin-top: -20px; }
  .notice.promo { border-radius: 18px; gap: 20px; }
  .notice.promo .row { width: 100%; }
  .notice.promo .row .btn { flex: 1 1 auto; }
}

:root { --poster-bg: #171533; --poster-text: #fff; --poster-shade: rgba(16, 13, 39, .8); --poster-shadow: rgba(35, 22, 78, .25); }
.hero-poster { position: absolute; inset: 0; overflow: hidden; border-radius: 26px; background: var(--poster-bg); box-shadow: 0 28px 70px var(--poster-shadow); }
.hero-poster img { display: block; width: 100%; height: 100%; object-fit: cover; }
.hero-poster::after { content: ''; position: absolute; inset: 45% 0 0; background: linear-gradient(transparent, var(--poster-shade)); }
.hero-poster-copy { position: absolute; z-index: 1; left: clamp(22px, 3vw, 38px); bottom: clamp(22px, 3vw, 38px); right: 22px; display: grid; gap: 8px; color: var(--poster-text); }
.hero-poster-copy span { font-size: 10px; font-weight: 800; letter-spacing: .15em; opacity: .8; }
.hero-poster-copy strong { font-size: clamp(20px, 2vw, 28px); line-height: 1.3; letter-spacing: -.03em; }
@media (max-width: 640px) { .hero-poster { border-radius: 20px; } }

/* Campaign art is local; text and links remain real page content. */
.hero.poster {
  --text: #f8f6ff; --sub: #d3cde7; --line: rgba(232, 225, 255, .25);
  --accent: #c3b3ff; --card: #201a3c; --hero-a: #30254e;
  color: var(--text);
  background: linear-gradient(90deg, rgba(16, 14, 37, .88), rgba(16, 14, 37, .46)), url('homepage-background-v2.jpg') center / cover no-repeat, #15132c;
}
.hero.poster::before { opacity: .08; }
.hero.poster .badge { background: rgba(211, 194, 255, .14); color: #e3d8ff; }
.hero.poster .hero-benefits li { background: rgba(24, 19, 48, .65); }
.hero.poster .btn:not(.primary) { background: rgba(24, 19, 48, .7); color: var(--text); }
.hero.poster .btn.primary { color: #1a1430; }
.hero.poster .hint a { color: #e2d6ff; }
#promo .notice.promo {
  position: relative; overflow: hidden; min-height: 330px; align-items: flex-start;
  flex-direction: column; justify-content: center; color: #fff;
  background: linear-gradient(90deg, rgba(8, 6, 34, .93) 0%, rgba(8, 6, 34, .83) 38%, rgba(8, 6, 34, .05) 100%), url('seven-day-poster-v2.jpg') center / cover no-repeat, #110d32;
}
#promo .promo-copy { max-width: 590px; }
#promo .promo-eyebrow { color: #d6c7ff; opacity: 1; }
#promo .notice.promo strong { color: #fff; font-size: clamp(32px, 4vw, 56px); }
#promo .notice.promo p { color: #e4dff1; opacity: 1; }
#promo .notice.promo .row { justify-content: flex-start; }
#promo .notice.promo .btn:not(.primary) { background: rgba(16, 12, 43, .58); color: #fff; border-color: rgba(255, 255, 255, .45); }
#promo .notice.promo .btn.primary { background: #fff; border-color: #fff; color: #21183e; }
@media (max-width: 800px) {
  .hero.poster { background-position: center; }
  #promo .notice.promo { min-height: 360px; background-position: 65% center; }
}
@media (max-width: 640px) {
  #promo .notice.promo { min-height: 420px; justify-content: flex-end; background-image: linear-gradient(0deg, rgba(8, 6, 34, .98) 0%, rgba(8, 6, 34, .9) 46%, rgba(8, 6, 34, .12) 100%), url('seven-day-poster-v2.jpg'); background-position: 70% center; }
  #promo .notice.promo .row { flex-wrap: wrap; }
}

/* Campaign in the first screen; the feature cards illustrate each benefit. */
.hero-art#promo { margin: 0; padding: 0; position: relative; aspect-ratio: 1.05; }
.hero-campaign { position: absolute; inset: 0; overflow: hidden; display: flex; flex-direction: column; justify-content: flex-end; padding: clamp(24px, 3vw, 40px); border-radius: 26px; color: #fff; background: linear-gradient(0deg, rgba(8, 6, 34, .98), rgba(8, 6, 34, .75) 47%, rgba(8, 6, 34, .08) 90%), url('seven-day-poster-v2.jpg') 68% center / cover no-repeat, #100b2d; box-shadow: 0 28px 70px rgba(35, 22, 78, .25); }
.hero-campaign .promo-eyebrow { color: #d6c7ff; }
.hero-campaign strong { display: block; color: #fff; font-size: clamp(30px, 3.5vw, 48px); line-height: 1.15; letter-spacing: -.04em; }
.hero-campaign p { color: #eee9fa; font-size: 14px; line-height: 1.7; margin: 12px 0 0; }
.hero-campaign .row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.hero.poster .hero-campaign .btn:not(.primary) { color: #fff; background: rgba(16, 12, 43, .65); border-color: rgba(255, 255, 255, .4); }
.hero.poster .hero-campaign .btn.primary { background: #fff; border-color: #fff; color: #21183e; }
.hero-campaign .btn { min-height: 44px; font-size: 13px; }
.download-info { max-width: 510px; color: var(--sub); }
.download-info p { margin: 10px 0; }
.download-info a { color: var(--text); }
#features { --text: #f8f6ff; --sub: #d3cde7; --line: rgba(232,225,255,.18); --accent: #c3b3ff; --card: #211d3c; --hero-a: #30254e; color: var(--text); background: linear-gradient(180deg, rgba(16,14,37,.93), rgba(20,17,42,.94)), url('homepage-background-v2.jpg') center / cover no-repeat, #15132c; }
#features .card, #features .card:nth-child(1), #features .card:nth-child(2), #features .card:nth-child(3), #features .card:nth-child(4) { position: relative; overflow: hidden; background: rgba(35, 30, 66, .86); border: 1px solid var(--line); }
#features .card h3, #features .card p, #features .feature-index { position: relative; z-index: 1; }
.feature-motion { position: absolute; right: 6%; top: 12%; width: 120px; height: 100px; opacity: .75; pointer-events: none; }
.feature-motion i { display: block; position: absolute; border: 1px solid rgba(197, 181, 255, .65); }
.feature-1 .feature-motion i { width: 75px; height: 48px; border-radius: 50%; transform: rotate(-25deg); animation: feature-flow 5s ease-in-out infinite alternate; }
.feature-1 .feature-motion i:nth-child(2) { left: 34px; transform: rotate(25deg); animation-delay: -2s; }
.feature-1 .feature-motion i:nth-child(3) { left: 17px; top: 14px; width: 65px; height: 20px; border-color: rgba(255, 174, 160, .65); }
.feature-2 .feature-motion i { left: 50%; top: 50%; width: 28px; height: 28px; margin: -14px; border-radius: 50%; animation: feature-pulse 4s ease-out infinite; }
.feature-2 .feature-motion i:nth-child(2) { animation-delay: -1.3s; }.feature-2 .feature-motion i:nth-child(3) { animation-delay: -2.6s; }
.feature-3 .feature-motion i { width: 70px; height: 70px; left: 20px; top: 15px; border-radius: 50%; border-style: dashed; animation: feature-spin 18s linear infinite; }
.feature-3 .feature-motion i:nth-child(2) { inset: 30px auto auto 35px; width: 40px; height: 40px; border-style: solid; animation-direction: reverse; }
.feature-3 .feature-motion i:nth-child(3) { inset: 47px auto auto 52px; width: 6px; height: 6px; background: #c3b3ff; border: 0; border-radius: 50%; }
.feature-4 .feature-motion i { width: 55px; height: 65px; left: 28px; top: 15px; border-radius: 30px 30px 40px 40px; animation: feature-flow 5s ease-in-out infinite alternate; }
.feature-4 .feature-motion i:nth-child(2) { width: 35px; height: 43px; left: 38px; top: 25px; animation-delay: -2s; }
.feature-4 .feature-motion i:nth-child(3) { width: 8px; height: 8px; left: 52px; top: 42px; border-radius: 50%; background: #c3b3ff; }
@keyframes feature-flow { from { translate: 0 -4px; } to { translate: 0 6px; } }
@keyframes feature-pulse { 0% { transform: scale(.6); opacity: .9; } 100% { transform: scale(3.3); opacity: 0; } }
@keyframes feature-spin { to { transform: rotate(360deg); } }
@media (max-width: 640px) { .hero-art#promo { aspect-ratio: auto; min-height: 420px; } .hero-campaign { border-radius: 20px; } .feature-motion { width: 100px; right: 3%; opacity: .45; } }
@media (prefers-reduced-motion: reduce) { .feature-motion i { animation: none; } }

/* First-screen campaign emphasis */
.hero h1 { font-family: 'Microsoft YaHei', 'PingFang SC', system-ui, sans-serif; font-weight: 900; font-size: clamp(42px, 4.2vw, 64px); line-height: 1.16; letter-spacing: -.045em; }
.hero h1 span { display: block; white-space: nowrap; }
.hero-benefits { gap: 8px; }
.hero.poster .hero-benefits li { position: relative; overflow: hidden; padding: 10px 14px; border-radius: 10px; font-size: 14px; font-weight: 800; }
.hero.poster .hero-benefits li:nth-child(1) { color: #fff3cd; background: linear-gradient(120deg, #842c25, #c54e29); border-color: #ffae62; box-shadow: 0 5px 20px rgba(255, 102, 57, .3); }
.hero.poster .hero-benefits li:nth-child(2) { color: #f3eeff; background: linear-gradient(120deg, #47318a, #7546bb); border-color: #c3a9ff; box-shadow: 0 5px 20px rgba(151, 102, 255, .3); }
.hero.poster .hero-benefits li:nth-child(3) { color: #e9fff8; background: linear-gradient(120deg, #0c5b61, #168078); border-color: #79e9c7; box-shadow: 0 5px 20px rgba(38, 199, 165, .25); }
.hero-benefits li::before { color: currentColor; }
.hero-benefits li::after { content: ''; position: absolute; inset: -50% auto -50% -50%; width: 25%; background: linear-gradient(90deg, transparent, rgba(255,255,255,.35), transparent); transform: skewX(-20deg); animation: benefit-shine 6s ease-in-out infinite; pointer-events: none; }
.hero-benefits li:nth-child(2)::after { animation-delay: 1s; }.hero-benefits li:nth-child(3)::after { animation-delay: 2s; }
.hero-prices { position: relative; max-width: 570px; margin-top: 24px; padding: 16px 18px; border: 1px solid rgba(255, 177, 103, .6); border-radius: 16px; background: linear-gradient(120deg, rgba(120, 34, 57, .9), rgba(78, 32, 85, .9)); box-shadow: 0 10px 32px rgba(241, 91, 55, .2); gap: 12px; }
.hero-prices span.price-flash { flex: none; display: grid; place-items: center; padding: 8px 10px; border: 0; border-radius: 7px; background: #ffda62; color: #6f1b19; font-size: 13px; font-weight: 900; line-height: 1.2; transform: rotate(-4deg); box-shadow: 0 3px 0 #d78a3c; }
.hero-prices span.price-options { display: flex; flex: 1; min-width: 0; gap: 0; padding: 0; border: 0; }
.hero-prices .price-options > span { flex: 1; display: grid; gap: 4px; padding: 0 10px; border-left: 1px solid rgba(255, 222, 189, .24); }
.hero-prices .price-options > span:first-child { border-left: 0; }
.hero-prices .price-options small { color: #ffe4cf; font-size: 12px; white-space: nowrap; }
.hero-prices .price-options strong { color: #fff3c5; font-family: 'Segoe UI', 'Arial', 'Microsoft YaHei', sans-serif; font-size: clamp(27px, 3vw, 37px); font-weight: 800; line-height: 1.15; letter-spacing: 0; font-variant-numeric: lining-nums tabular-nums; text-shadow: none; white-space: nowrap; }
.hero-prices b { flex: none; color: #fff1d0; border-color: rgba(255, 222, 189, .4); }
@keyframes benefit-shine { 0%, 25% { left: -50%; } 60%, 100% { left: 130%; } }
@media (max-width: 640px) {
  .hero h1 { font-size: clamp(32px, 8.4vw, 50px); }
  .hero.poster .hero-benefits li { font-size: 12px; padding: 8px 10px; }
  .hero-prices { padding: 13px 10px; gap: 5px; }
  .hero-prices span.price-flash { font-size: 11px; padding: 7px 6px; }
  .hero-prices .price-options > span { padding: 0 5px; }
  .hero-prices .price-options small { font-size: 10px; }
  .hero-prices .price-options strong { font-size: clamp(23px, 6vw, 30px); }
  .hero-prices b { width: 27px; height: 27px; }
}
@media (prefers-reduced-motion: reduce) { .hero-benefits li::after { animation: none; display: none; } }

/* One continuous canvas for the hero and the feature story. */
.landing-backdrop { background: linear-gradient(90deg, rgba(16,14,37,.9), rgba(16,14,37,.55)), url('homepage-background-v2.jpg') center top / cover no-repeat, #15132c; }
.landing-backdrop .hero.poster, .landing-backdrop #features { background: transparent; }
.landing-backdrop .hero.poster::before { display: none; }
#features .grid { gap: 16px; }
#features .card.feature-card { position: relative; display: block; min-height: 290px; padding: 0; border: 1px solid rgba(218,205,255,.2); border-radius: 22px; background: #100d2a; isolation: isolate; }
.feature-art { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center; z-index: -2; }
.feature-card::after { content: ''; position: absolute; inset: 0; z-index: -1; background: linear-gradient(90deg, rgba(14,11,37,.97) 0%, rgba(14,11,37,.88) 38%, rgba(14,11,37,.2) 100%); }
.feature-copy { display: flex; flex-direction: column; align-items: flex-start; width: 68%; min-height: 290px; padding: clamp(24px, 3vw, 38px); }
#features .feature-copy h3 { margin: auto 0 12px; font-size: clamp(22px, 2vw, 28px); }
#features .feature-copy p { color: #e3def2; font-size: 14px; line-height: 1.7; }
#features .feature-index { background: rgba(186,165,255,.18); color: #e5dcff; }
@media (max-width: 640px) {
  .landing-backdrop { background-size: auto 100%; }
  #features .card.feature-card { min-height: 250px; }
  .feature-copy { width: 72%; min-height: 250px; padding: 24px; }
  #features .feature-copy h3 { margin-top: auto; }
}

/* Mobile layout: equal columns, full-width panels and predictable wrapping. */
@media (max-width: 640px) {
  .wrap { width: 100%; padding-inline: 20px; }
  header.top .wrap { height: 60px; }
  header.top nav { gap: 8px; }
  .brand span { white-space: nowrap; }
  .announcement { justify-content: space-between; gap: 8px; padding: 10px 20px; }
  .announcement span { min-width: 0; }
  .hero.poster { padding: 40px 0 56px; }
  .hero.poster .hero-layout { width: 100%; grid-template-columns: minmax(0, 1fr); gap: 30px; }
  .hero-copy { width: 100%; }
  .hero h1 { margin: 20px 0 16px; font-size: clamp(30px, 8.2vw, 44px); line-height: 1.2; letter-spacing: -.045em; }
  .hero h1 span { white-space: normal; overflow-wrap: normal; }
  .hero .lead { font-size: 15px; line-height: 1.75; margin-bottom: 22px; }
  .hero-benefits { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; margin: 0 0 20px; }
  .hero.poster .hero-benefits li { display: flex; align-items: center; justify-content: center; min-height: 48px; padding: 6px 4px; text-align: center; font-size: 11px; line-height: 1.35; overflow-wrap: anywhere; }
  .hero-benefits li::before { flex: none; margin-right: 3px; }
  .hero .cta { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; margin: 0; }
  .hero .cta .btn { width: 100%; min-width: 0; min-height: 50px; padding: 9px 5px; font-size: 13px; text-align: center; }
  .hero .cta .btn:nth-child(3) { grid-column: 1 / -1; min-height: 42px; }
  .hero .hint { margin: 12px 0 0; font-size: 12px; }
  .hero-prices { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 10px; width: 100%; max-width: none; padding: 14px; margin-top: 20px; align-items: center; }
  .hero-prices span.price-flash { font-size: 11px; padding: 7px; }
  .hero-prices span.price-options { width: 100%; min-width: 0; }
  .hero-prices .price-options > span { min-width: 0; text-align: center; padding: 0 4px; }
  .hero-prices .price-options small { white-space: normal; line-height: 1.2; }
  .hero-prices .price-options strong { font-size: clamp(22px, 6vw, 28px); }
  .hero-prices > b { display: none; }
  .download-info { margin-top: 14px; }
  .hero-art#promo { width: 100%; max-width: none; min-height: 0; aspect-ratio: auto; }
  .hero-campaign { position: relative; min-height: 390px; padding: 24px; background-position: 68% center; }
  .hero-campaign strong { font-size: clamp(30px, 8vw, 40px); }
  .hero-campaign p { font-size: 13px; }
  .hero-campaign .row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); width: 100%; gap: 8px; }
  .hero-campaign .row .btn { width: 100%; min-width: 0; padding: 9px 5px; }
  .hero-campaign .row .btn:last-child { grid-column: 1 / -1; }
  #features { padding: 56px 0 64px; }
  #features h2 { font-size: clamp(28px, 7.5vw, 38px); line-height: 1.25; }
  #features .sub { margin: 10px 0 24px; font-size: 14px; }
  #features .grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 12px; margin: 0; }
  #features .card.feature-card { width: 100%; min-width: 0; min-height: 240px; }
  .feature-copy { width: 70%; min-width: 0; min-height: 240px; padding: 22px; }
  #features .feature-copy h3 { font-size: 21px; line-height: 1.35; }
  #features .feature-copy p { font-size: 13px; }
  #faq { padding: 56px 0; }
  .faq details { overflow-wrap: anywhere; }
}
@media (max-width: 350px) {
  .wrap { padding-inline: 16px; }
  .hero h1 { font-size: 29px; }
  .hero.poster .hero-benefits li { font-size: 10px; }
  .hero-prices { padding-inline: 9px; }
  .hero-prices .price-options strong { font-size: 21px; }
  .hero-campaign { padding: 20px; }
}
@media (max-width: 640px) {
  html[lang="zh-CN"] .hero .lead { font-size: clamp(13px, 3.6vw, 15px); }
  html[lang="zh-CN"] .hero.poster .hero-benefits li { font-size: clamp(9px, 2.7vw, 11px); white-space: nowrap; }
}

/* 2026-11-09 推广改版：下载区提示 + RTL（波斯语页） */
.dl-note { max-width: 560px; margin: 8px auto 0; }
.dl-note b, .dl-note strong { color: var(--text); }
.tf-qr { vertical-align: middle; border-radius: 8px; margin-right: 8px; }
[dir="rtl"] nav { margin-left: 0; margin-right: auto; }
[dir="rtl"] .hero-copy, [dir="rtl"] .feature-copy, [dir="rtl"] .faq { text-align: right; }


/* 语言折叠菜单（2026-11-10：七种语言平铺会把导航挤爆）。
   用原生 <details>，不依赖 JS，CSP 下也能工作。 */
.langmenu { position: relative; }
.langmenu > summary {
  list-style: none; cursor: pointer; user-select: none;
  border: 1px solid var(--line); border-radius: 999px; padding: 3px 12px;
  display: inline-flex; align-items: center; gap: 5px; white-space: nowrap;
}
.langmenu > summary::-webkit-details-marker { display: none; }
/* 箭头用 CSS 画三角，不依赖字体里有没有那个字符 —— 2026-11-10 用转义写崩过一次 */
.langmenu > summary::after {
  content: ''; width: 0; height: 0; opacity: .7;
  border-left: 4px solid transparent; border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
}
.langmenu[open] > summary::after { border-top: 0; border-bottom: 5px solid currentColor; }
.langmenu .langlist {
  position: absolute; top: calc(100% + 6px); inset-inline-end: 0; z-index: 60;
  display: grid; gap: 2px; padding: 6px; min-width: 128px;
  background: #171427; border: 1px solid var(--line); border-radius: 10px;
  box-shadow: 0 10px 28px rgba(0,0,0,.4);
}
.langmenu .langlist .lang {
  border: 0; border-radius: 6px; padding: 6px 10px; text-align: start; white-space: nowrap;
}
.langmenu .langlist .lang:hover { background: rgba(255,255,255,.1); }
.langmenu .langlist .lang.current { font-weight: 700; }
.langmenu .langlist .lang.current { position: relative; padding-inline-start: 22px; }
.langmenu .langlist .lang.current::before { content: ''; position: absolute; inset-inline-start: 8px; top: 50%; width: 6px; height: 6px; margin-top: -3px; border-radius: 50%; background: currentColor; opacity: .8; }

/* ---- 网页客服（src/support.js）：右下角常驻按钮 + 折叠面板 ---- */
/* 用 inset-inline-* 而不是 left/right，阿拉伯语和波斯语的 RTL 页面自动镜像到左下角。 */
.sup-fab { position: fixed; inset-block-end: 18px; inset-inline-end: 18px; z-index: 40; padding: 12px 18px; border-radius: 999px; border: 1px solid var(--line); background: #4f46e5; color: #fff; font-weight: 700; font-size: 15px; cursor: pointer; box-shadow: 0 8px 24px rgba(0,0,0,.22); }
.sup-fab:hover { filter: brightness(1.08); }
.sup-panel { position: fixed; inset-block-end: 18px; inset-inline-end: 18px; z-index: 41; width: min(360px, calc(100vw - 32px)); max-height: min(560px, calc(100vh - 40px)); display: flex; flex-direction: column; background: var(--card); color: var(--text); border: 1px solid var(--line); border-radius: 16px; box-shadow: 0 16px 48px rgba(0,0,0,.28); overflow: hidden; }
.sup-panel[hidden] { display: none; }
.sup-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 12px 14px; border-bottom: 1px solid var(--line); font-weight: 700; }
.sup-close { border: 0; background: transparent; color: var(--sub); font-size: 22px; line-height: 1; cursor: pointer; padding: 0 4px; }
.sup-log { flex: 1 1 auto; overflow-y: auto; padding: 12px 14px; display: flex; flex-direction: column; gap: 10px; }
.sup-msg { display: flex; flex-direction: column; gap: 2px; }
.sup-msg b { font-size: 12px; color: var(--sub); font-weight: 600; }
.sup-msg p { margin: 0; padding: 9px 12px; border-radius: 12px; font-size: 15px; white-space: pre-wrap; overflow-wrap: anywhere; }
.sup-user { align-items: flex-end; }
.sup-user p { background: #4f46e5; color: #fff; }
.sup-bot p, .sup-agent p { background: color-mix(in srgb, var(--text) 8%, transparent); }
.sup-agent b { color: #4f46e5; }
.sup-note { margin: 0; font-size: 13px; color: var(--sub); text-align: center; }
.sup-form, .sup-contact { display: flex; gap: 8px; padding: 10px 14px; border-top: 1px solid var(--line); }
.sup-contact { border-top: 0; border-bottom: 1px solid var(--line); padding-block: 0; }
.sup-input { flex: 1 1 auto; min-width: 0; padding: 10px 12px; border-radius: 10px; border: 1px solid var(--line); background: var(--bg); color: var(--text); font-size: 15px; }
.sup-send { flex: 0 0 auto; padding: 10px 14px; border-radius: 10px; border: 0; background: #4f46e5; color: #fff; font-weight: 700; cursor: pointer; font-size: 15px; }
.sup-send:disabled { opacity: .55; cursor: default; }
.sup-foot { padding: 8px 14px 12px; font-size: 13px; text-align: center; }
.sup-foot a { color: var(--sub); }
@media (max-width: 480px) {
  .sup-panel { inset-block-end: 0; inset-inline-end: 0; width: 100vw; max-height: 82vh; border-radius: 16px 16px 0 0; }
}

/* ---- 结账页：收银台是主角 ---- */
/* 2026-11-11 返工：原来二维码藏在一个写着"去支付"的灰按钮后面，USDT 反而占一大块，
   买家以为只收 USDT。现在收银台直接嵌在页面上，其它方式折叠。 */
.pay-head { margin-bottom: 10px; }
.pay-head .sub { font-size: 13px; opacity: .7; margin-left: 6px; }
.pay-title { font-size: 17px; font-weight: 700; margin: 16px 0 10px; }
.btn.pay-big { display: block; width: 100%; padding: 16px; font-size: 17px; font-weight: 700; text-align: center; }
.pay-more { margin-top: 18px; border-top: 1px solid var(--line); padding-top: 12px; }
.pay-more > summary { cursor: pointer; font-size: 14px; opacity: .8; padding: 6px 0; }
.pay-more[open] > summary { margin-bottom: 8px; }

.notice-gap { margin-top: 14px; }

/* Windows 蓝色警告的图解。默认折叠：真正被拦住的人才会点开，不打扰其他人。
   安装指南页里是展开的（那页的人就是来看怎么装的）。 */
.winwarn { margin: 10px auto 0; max-width: 640px; text-align: left; border: 1px solid rgba(255,176,32,.45); border-radius: 10px; padding: 10px 14px; background: rgba(255,176,32,.07); }
.winwarn > summary { cursor: pointer; font-weight: 600; list-style: none; }
.winwarn > summary::-webkit-details-marker { display: none; }
/* direction: ltr 是必须的，不是顺手写的：阿拉伯语/波斯语页面上 direction 是 rtl，
   而 SVG 的 <text> 会跟着继承——text-anchor:start 在 rtl 下变成「从右往左排」，
   于是第一个面板里的英文整段向左跑出框外被切掉（2026-11-11 在线上截图里看到的）。
   这张图画的是 Windows 自己的英文对话框，本来就该是从左到右。 */
.winwarn-art { display: block; width: 100%; height: auto; max-width: 640px; margin: 12px 0; direction: ltr; unicode-bidi: isolate; }
.winwarn-steps { margin: 0 0 8px; padding-left: 1.2em; }
.winwarn-steps li { margin: 4px 0; }
.winwarn-why { opacity: .8; font-size: 13px; margin: 6px 0 2px; }