:root {
  --ink: #14233a;
  --ink-soft: #40516a;
  --muted: #708096;
  --line: #dce5e8;
  --paper: #ffffff;
  --canvas: #f5f8f7;
  --primary: #1769e0;
  --primary-dark: #0c438f;
  --brand-green: #18a87b;
  --rise: #e5484d;
  --fall: #19a66a;
  --closed: #1e88e5;
  --shadow: 0 26px 80px rgba(31, 52, 75, .13);
  font-family: "HarmonyOS Sans SC", "MiSans", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--canvas);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; background: var(--canvas); color: var(--ink); }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }

.site-frame {
  width: min(1440px, calc(100% - 32px));
  margin: 16px auto;
  background: var(--paper);
  border: 1px solid rgba(189, 203, 207, .7);
  border-radius: 28px;
  overflow: hidden;
  box-shadow: 0 12px 38px rgba(46, 67, 84, .08);
}

.site-header {
  min-height: 78px;
  padding: 0 clamp(22px, 4.5vw, 72px);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 36px;
  border-bottom: 1px solid #edf2f3;
  background: rgba(255,255,255,.92);
}

.site-brand { display: inline-flex; align-items: center; gap: 11px; font-weight: 760; text-decoration: none; letter-spacing: -.03em; }
.brand-mark { width: 31px; height: 31px; padding: 7px; display: flex; align-items: end; justify-content: center; gap: 3px; border-radius: 10px; background: var(--primary); box-shadow: 0 8px 20px rgba(23,105,224,.25); }
.brand-mark i { display: block; width: 3px; border-radius: 3px; background: #fff; }
.brand-mark i:nth-child(1) { height: 7px; opacity: .72; }
.brand-mark i:nth-child(2) { height: 13px; }
.brand-mark i:nth-child(3) { height: 10px; opacity: .86; }

.site-nav { display: flex; justify-content: center; gap: clamp(18px, 2.2vw, 36px); }
.site-nav a { position: relative; padding: 29px 0 26px; color: #607188; font-size: 14px; font-weight: 560; text-decoration: none; white-space: nowrap; }
.site-nav a::after { content: ""; position: absolute; left: 50%; right: 50%; bottom: -1px; height: 2px; background: var(--primary); transition: left .2s ease, right .2s ease; }
.site-nav a:hover, .site-nav a.is-active { color: var(--ink); }
.site-nav a.is-active::after { left: 0; right: 0; }

.header-cta { padding: 10px 16px; border-radius: 11px; background: #edf5ff; color: var(--primary); font-size: 13px; font-weight: 700; text-decoration: none; transition: transform .2s ease, background .2s ease; }
.header-cta:hover { transform: translateY(-2px); background: #e1efff; }

.hero { position: relative; }
.hero-home { min-height: 660px; padding: clamp(64px, 7vw, 108px) clamp(28px, 6.2vw, 98px) 66px; display: grid; grid-template-columns: .92fr 1.08fr; gap: clamp(42px, 7vw, 100px); align-items: center; overflow: hidden; background-image: linear-gradient(rgba(19,70,106,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(19,70,106,.035) 1px, transparent 1px); background-size: 32px 32px; }
.hero-home::before { content: ""; position: absolute; width: 720px; height: 720px; right: -210px; top: -260px; border-radius: 50%; background: radial-gradient(circle, rgba(23,105,224,.11), rgba(24,168,123,.035) 47%, transparent 70%); pointer-events: none; }

.eyebrow { margin: 0 0 18px; display: flex; align-items: center; gap: 10px; color: var(--primary); font-size: 12px; font-weight: 760; letter-spacing: .14em; text-transform: uppercase; }
.eyebrow > span { width: 26px; height: 2px; background: currentColor; }
.hero h1, .page-hero h1 { margin: 0; font-size: clamp(52px, 5.8vw, 82px); line-height: 1.04; letter-spacing: -.075em; font-weight: 820; }
.hero h1 em, .page-hero h1 em { color: var(--primary); font-style: normal; }
.hero-lead { max-width: 560px; margin: 26px 0 0; color: var(--ink-soft); font-size: 18px; line-height: 1.8; }
.hero-actions { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 12px; }
.button { min-height: 50px; padding: 0 19px; display: inline-flex; align-items: center; justify-content: center; gap: 14px; border-radius: 13px; font-size: 14px; font-weight: 720; text-decoration: none; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: #fff; background: var(--primary); box-shadow: 0 12px 28px rgba(23,105,224,.23); }
.button-primary:hover { background: #0f5dcc; box-shadow: 0 15px 34px rgba(23,105,224,.3); }
.button-quiet { color: var(--ink); background: #eef3f3; }
.button-light { color: var(--primary-dark); background: #fff; box-shadow: 0 12px 30px rgba(8,34,67,.17); }
.button-disabled { color: #8794a4; background: #edf1f2; cursor: default; }
.button-disabled:hover { transform: none; }

.hero-proof { margin-top: 36px; padding-top: 23px; display: flex; flex-wrap: wrap; gap: 18px 26px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
.hero-proof b { color: var(--ink); margin-right: 3px; }

.product-stage { position: relative; min-height: 480px; display: grid; place-items: center; }
.stage-orbit { position: absolute; border: 1px solid rgba(23,105,224,.13); border-radius: 50%; }
.orbit-one { width: 510px; height: 510px; }
.orbit-two { width: 390px; height: 390px; border-color: rgba(24,168,123,.13); }
.browser-card { position: relative; z-index: 2; width: min(100%, 530px); padding: 15px; border: 1px solid #dce7ec; border-radius: 25px; background: rgba(255,255,255,.97); box-shadow: var(--shadow); transform: rotate(1.2deg); }
.browser-bar { height: 39px; padding: 0 5px 12px; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; color: var(--muted); font-size: 10px; border-bottom: 1px solid #edf2f3; }
.traffic { display: flex; gap: 5px; }
.traffic i { width: 7px; height: 7px; border-radius: 50%; background: #dfe6e7; }
.status-dot { justify-self: end; color: var(--brand-green); }
.plugin-head { padding: 19px 8px 14px; display: flex; align-items: center; justify-content: space-between; }
.plugin-head > div { display: grid; gap: 4px; }
.plugin-head strong { font-size: 21px; }
.demo-label { color: var(--muted); font-size: 10px; letter-spacing: .12em; }
.market-badge { padding: 7px 10px; border-radius: 8px; background: #e8f3fd; color: var(--closed); font-size: 11px; font-weight: 720; }
.summary-row { padding: 13px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; background: #f4f8f8; border-radius: 14px; }
.summary-row > div { display: grid; gap: 4px; text-align: center; }
.summary-row span { color: var(--muted); font-size: 10px; }
.summary-row strong { font-size: 20px; }
.rise { color: var(--rise) !important; }
.fall { color: var(--fall) !important; }
.fund-list { margin-top: 8px; }
.fund-row { min-height: 61px; padding: 11px 9px; display: grid; grid-template-columns: 1fr auto; align-items: center; border-bottom: 1px solid #edf2f3; }
.fund-row.featured { margin-top: 9px; border-radius: 10px; background: #fff8f7; border-bottom-color: transparent; }
.fund-name, .fund-value { display: grid; gap: 4px; }
.fund-name b { font-size: 12px; }
.fund-name span, .fund-value span { color: var(--muted); font-size: 9px; }
.fund-value { text-align: right; }
.fund-value b { font-size: 13px; }
.sync-line { padding: 13px 8px 3px; display: flex; justify-content: space-between; color: var(--muted); font-size: 9px; }
.sync-line span { color: var(--brand-green); }
.sync-line i { display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.floating-chip { position: absolute; z-index: 3; padding: 9px 12px; border: 1px solid #e1e9eb; border-radius: 10px; background: rgba(255,255,255,.96); box-shadow: 0 12px 28px rgba(44,67,86,.12); font-size: 10px; font-weight: 720; }
.chip-focus { left: -6px; top: 105px; color: var(--rise); }
.chip-badge { right: -5px; bottom: 85px; color: var(--primary); }

.feature-strip { display: grid; grid-template-columns: repeat(5, 1fr); background: #eef4f3; border-top: 1px solid #dfe9e8; border-bottom: 1px solid #dfe9e8; }
.feature-strip > div { min-height: 126px; padding: 24px clamp(14px, 2.2vw, 32px); display: grid; align-content: center; gap: 5px; border-right: 1px solid #d8e4e3; }
.feature-strip > div:last-child { border-right: 0; }
.feature-strip span { color: var(--primary); font-size: 10px; font-weight: 760; }
.feature-strip b { font-size: 14px; }
.feature-strip small { color: var(--muted); font-size: 11px; }

.content-section { padding: clamp(76px, 8vw, 120px) clamp(28px, 6.2vw, 98px); }
.section-heading { display: grid; grid-template-columns: 1fr 1.15fr; gap: 30px 70px; align-items: end; margin-bottom: 48px; }
.section-heading .eyebrow { grid-column: 1 / -1; margin-bottom: -4px; }
.section-heading h2 { margin: 0; font-size: clamp(38px, 4vw, 58px); line-height: 1.08; letter-spacing: -.055em; }
.section-heading > p:last-child { margin: 0; color: var(--ink-soft); line-height: 1.8; }
.content-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.info-card { position: relative; min-height: 330px; padding: 30px; overflow: hidden; border: 1px solid var(--line); border-radius: 20px; background: #fbfdfd; }
.info-card-wide { grid-column: 1 / -1; min-height: 280px; background: linear-gradient(125deg, #f1f7ff, #f4faf7); }
.card-index { color: var(--primary); font-size: 11px; font-weight: 800; }
.info-card h3 { margin: 54px 0 9px; font-size: 25px; letter-spacing: -.035em; }
.info-card-wide h3 { margin-top: 36px; }
.info-card p { margin: 0; max-width: 650px; color: var(--ink-soft); line-height: 1.7; }
.info-card ul { margin: 22px 0 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 24px; list-style: none; }
.info-card li { position: relative; padding-left: 16px; color: var(--ink-soft); font-size: 13px; line-height: 1.55; }
.info-card li::before { content: ""; position: absolute; left: 0; top: .55em; width: 6px; height: 6px; border-radius: 50%; background: var(--brand-green); }

.closing-cta { margin: 0 clamp(20px, 3vw, 46px) 46px; padding: clamp(38px, 5vw, 66px); display: flex; justify-content: space-between; align-items: center; gap: 30px; border-radius: 23px; color: #fff; background: linear-gradient(125deg, var(--primary-dark), var(--primary) 62%, #218ab6); overflow: hidden; }
.closing-cta.compact { padding-top: 45px; padding-bottom: 45px; }
.closing-cta .eyebrow { margin-bottom: 12px; }
.eyebrow.light { color: #acd5ff; }
.closing-cta h2 { max-width: 720px; margin: 0; font-size: clamp(29px, 3.3vw, 48px); line-height: 1.12; letter-spacing: -.05em; }

.page-hero { min-height: 390px; padding: clamp(64px, 7vw, 100px) clamp(28px, 6.2vw, 98px); display: grid; grid-template-columns: 1.2fr .8fr; align-items: end; gap: 50px; background-image: linear-gradient(rgba(19,70,106,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(19,70,106,.035) 1px, transparent 1px); background-size: 32px 32px; }
.page-hero h1 { font-size: clamp(50px, 5.4vw, 76px); }
.page-hero > p { max-width: 490px; margin: 0 0 10px; color: var(--ink-soft); font-size: 18px; line-height: 1.8; }

.download-layout, .guide-layout, .faq-layout { padding: clamp(66px, 7vw, 105px) clamp(28px, 6.2vw, 98px); display: grid; grid-template-columns: .78fr 1.22fr; gap: clamp(45px, 7vw, 100px); }
.download-intro, .guide-aside, .faq-aside { align-self: start; }
.platform-mark, .aside-label { display: inline-block; margin-bottom: 20px; color: var(--primary); font-size: 11px; font-weight: 800; letter-spacing: .12em; }
.download-intro h2, .guide-aside h2, .faq-aside h2 { margin: 0; font-size: clamp(32px, 3.3vw, 48px); line-height: 1.12; letter-spacing: -.05em; }
.download-intro > p, .guide-aside > p, .faq-aside > p { margin: 20px 0 26px; color: var(--ink-soft); line-height: 1.8; }
.install-notes { margin-top: 32px; display: grid; gap: 12px; color: var(--muted); font-size: 12px; }
.install-notes span { padding-left: 18px; position: relative; }
.install-notes span::before { content: ""; position: absolute; left: 0; top: .35em; width: 7px; height: 7px; border-radius: 50%; background: var(--brand-green); }
.download-list { display: grid; gap: 16px; }
.download-card { position: relative; min-height: 270px; padding: 28px; border: 1px solid var(--line); border-radius: 20px; background: #fbfdfd; }
.download-card.is-primary { background: linear-gradient(140deg, #f0f6ff, #fff 60%); border-color: #c9dcf6; }
.download-card-top { display: flex; justify-content: space-between; color: var(--primary); font-size: 11px; font-weight: 800; }
.recommend { padding: 5px 8px; border-radius: 7px; color: var(--primary); background: #e3f0ff; }
.download-card h2 { margin: 46px 0 10px; font-size: 25px; letter-spacing: -.035em; }
.download-card p { margin: 0 0 24px; color: var(--ink-soft); line-height: 1.7; }
.download-card .button { min-height: 45px; }
.miniapp-qr { margin-top: 24px; display: flex; align-items: center; gap: 18px; }
.miniapp-qr img { width: 126px; height: 126px; padding: 7px; border: 1px solid var(--line); border-radius: 16px; background: #fff; object-fit: contain; }
.miniapp-qr > div { display: grid; gap: 7px; }
.miniapp-qr strong { font-size: 15px; }
.miniapp-qr span { color: var(--muted); font-size: 11px; line-height: 1.55; }
.mini-steps { margin: 0 clamp(28px, 6.2vw, 98px) clamp(76px, 8vw, 116px); display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.mini-steps > div { min-height: 190px; padding: 30px; border-right: 1px solid var(--line); }
.mini-steps > div:last-child { border-right: 0; }
.mini-steps span { display: grid; place-items: center; width: 29px; height: 29px; margin-bottom: 28px; border-radius: 50%; color: #fff; background: var(--primary); font-size: 11px; }
.mini-steps b { font-size: 17px; }
.mini-steps p { color: var(--muted); font-size: 12px; line-height: 1.6; }

.guide-aside, .faq-aside { position: sticky; top: 24px; }
.guide-steps { position: relative; }
.guide-steps::before { content: ""; position: absolute; left: 26px; top: 26px; bottom: 26px; width: 1px; background: var(--line); }
.guide-step { position: relative; display: grid; grid-template-columns: 54px 1fr; gap: 25px; padding-bottom: 62px; }
.guide-step:last-child { padding-bottom: 0; }
.step-number { position: relative; z-index: 1; width: 54px; height: 54px; display: grid; place-items: center; border: 1px solid #cddce2; border-radius: 50%; color: var(--primary); background: #fff; font-size: 11px; font-weight: 800; }
.step-body { padding: 5px 0 0; }
.step-body h2 { margin: 0 0 9px; font-size: 25px; letter-spacing: -.035em; }
.step-body > p { margin: 0 0 20px; color: var(--ink-soft); line-height: 1.7; }
.step-body ol { margin: 0; padding: 0; display: grid; gap: 9px; list-style: none; counter-reset: guide-list; }
.step-body li { counter-increment: guide-list; position: relative; padding: 12px 14px 12px 42px; border-radius: 10px; color: var(--ink-soft); background: #f2f6f6; font-size: 13px; line-height: 1.55; }
.step-body li::before { content: counter(guide-list); position: absolute; left: 15px; color: var(--primary); font-size: 10px; font-weight: 800; }
.tip-banner { margin: 0 clamp(28px, 6.2vw, 98px) clamp(76px, 8vw, 116px); padding: 25px; display: flex; align-items: center; gap: 22px; border: 1px solid #cfe2f5; border-radius: 17px; background: #f1f7fd; }
.tip-banner b { font-size: 15px; }
.tip-banner p { margin: 5px 0 0; color: var(--ink-soft); font-size: 12px; }
.tip-banner code { color: var(--closed); }

.aside-links { display: grid; border-top: 1px solid var(--line); }
.aside-links a { padding: 14px 0; display: flex; justify-content: space-between; border-bottom: 1px solid var(--line); color: var(--ink); font-size: 13px; font-weight: 700; text-decoration: none; }
.aside-links a:hover { color: var(--primary); }
.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary { min-height: 94px; display: grid; grid-template-columns: 44px 1fr 24px; align-items: center; gap: 15px; cursor: pointer; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-number { color: var(--primary); font-size: 10px; font-weight: 800; }
.faq-item summary strong { font-size: 18px; letter-spacing: -.02em; }
.faq-item summary i { position: relative; width: 18px; height: 18px; }
.faq-item summary i::before, .faq-item summary i::after { content: ""; position: absolute; left: 3px; right: 3px; top: 8px; height: 1px; background: var(--ink); transition: transform .2s ease; }
.faq-item summary i::after { transform: rotate(90deg); }
.faq-item[open] summary i::after { transform: rotate(0); }
.faq-answer { padding: 0 39px 28px 59px; color: var(--ink-soft); line-height: 1.8; }
.empty-state { padding: 30px; border: 1px dashed #cbd9dd; border-radius: 16px; color: var(--muted); background: #f8fbfb; text-align: center; }

.site-footer { min-height: 82px; padding: 0 clamp(22px, 4.5vw, 72px); display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 20px; border-top: 1px solid #edf2f3; color: var(--muted); font-size: 11px; }
.site-footer span:first-child { color: var(--ink); font-weight: 800; }
.site-footer a { justify-self: end; color: var(--primary); text-decoration: none; font-weight: 700; }

.reveal { animation: reveal-up .72s both cubic-bezier(.22,.8,.24,1); }
.reveal-delay { animation-delay: .12s; }
@keyframes reveal-up { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }

@media (max-width: 1080px) {
  .site-header { gap: 20px; }
  .site-nav { gap: 16px; }
  .site-nav a:last-child { display: none; }
  .hero-home { grid-template-columns: 1fr; }
  .hero-copy { max-width: 720px; }
  .product-stage { width: min(650px, 100%); margin: 0 auto; }
  .download-layout, .guide-layout, .faq-layout { grid-template-columns: .9fr 1.1fr; gap: 48px; }
}

@media (max-width: 820px) {
  .site-frame { width: 100%; margin: 0; border: 0; border-radius: 0; }
  .site-header { min-height: 68px; grid-template-columns: 1fr auto; }
  .site-nav { grid-column: 1 / -1; order: 3; justify-content: flex-start; overflow-x: auto; scrollbar-width: none; border-top: 1px solid #edf2f3; }
  .site-nav::-webkit-scrollbar { display: none; }
  .site-nav a { padding: 15px 0 13px; }
  .site-nav a:last-child { display: block; }
  .hero-home { min-height: auto; }
  .feature-strip { grid-template-columns: repeat(2, 1fr); }
  .feature-strip > div { border-bottom: 1px solid #d8e4e3; }
  .feature-strip > div:last-child { grid-column: 1 / -1; }
  .section-heading { grid-template-columns: 1fr; gap: 20px; }
  .content-grid { grid-template-columns: 1fr; }
  .info-card-wide { grid-column: auto; }
  .closing-cta { align-items: flex-start; flex-direction: column; }
  .page-hero { grid-template-columns: 1fr; align-items: start; }
  .download-layout, .guide-layout, .faq-layout { grid-template-columns: 1fr; }
  .guide-aside, .faq-aside { position: static; }
  .mini-steps { grid-template-columns: 1fr; }
  .mini-steps > div { border-right: 0; border-bottom: 1px solid var(--line); }
  .mini-steps > div:last-child { border-bottom: 0; }
}

@media (max-width: 560px) {
  .site-header { padding-left: 18px; padding-right: 18px; }
  .site-brand { font-size: 14px; }
  .brand-mark { width: 28px; height: 28px; }
  .header-cta { padding: 9px 12px; }
  .hero-home { padding: 58px 20px 48px; }
  .hero h1, .page-hero h1 { font-size: 47px; }
  .hero-lead, .page-hero > p { font-size: 16px; }
  .hero-actions { display: grid; }
  .button { width: 100%; }
  .product-stage { min-height: 400px; }
  .browser-card { padding: 11px; border-radius: 19px; transform: none; }
  .orbit-one { width: 390px; height: 390px; }
  .orbit-two { width: 300px; height: 300px; }
  .floating-chip { display: none; }
  .feature-strip > div { min-height: 110px; }
  .content-section, .download-layout, .guide-layout, .faq-layout { padding-left: 20px; padding-right: 20px; }
  .info-card { padding: 24px; }
  .info-card ul { grid-template-columns: 1fr; }
  .closing-cta { margin-left: 12px; margin-right: 12px; padding: 30px 24px; }
  .page-hero { min-height: 340px; padding: 56px 20px; }
  .mini-steps, .tip-banner { margin-left: 20px; margin-right: 20px; }
  .guide-step { grid-template-columns: 44px 1fr; gap: 14px; }
  .miniapp-qr { align-items: flex-start; }
  .miniapp-qr img { width: 112px; height: 112px; }
  .guide-steps::before { left: 21px; }
  .step-number { width: 44px; height: 44px; }
  .faq-item summary { grid-template-columns: 30px 1fr 20px; min-height: 84px; }
  .faq-item summary strong { font-size: 16px; }
  .faq-answer { padding-left: 45px; }
  .site-footer { padding: 24px 20px; grid-template-columns: 1fr auto; }
  .site-footer span:nth-child(2) { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}