:root {
    --brand: #3246fe;
    --brand-2: #4f5efc;
    --brand-deep: #08183F;
    --ink: #10204A;
    --muted: #60708F;
    --soft: #F5F8FF;
    --soft-2: #EAF0FF;
    --line: #DBE7FF;
    --card: #FFFFFF;
    --green: #059669;
    --green-2: #07B999;
    --green-soft: #ECFDF5;
    --shadow: 0 24px 60px rgba(16, 32, 74, .12);
    --shadow-blue: 0 20px 44px rgba(32, 80, 237, .22);
    --radius-xl: 32px;
    --radius-lg: 22px;
    --radius-md: 16px;
    --max: 1280px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body {
    margin: 0;
    font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", system-ui, sans-serif;
    color: var(--ink);
    background: #fff;
    overflow-x: hidden;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(var(--max), calc(100% - 48px)); margin: 0 auto; }
.section { padding: 92px 0; position: relative; }
.section.soft { background: linear-gradient(180deg, #fff 0%, var(--soft) 100%); }
.section-head { text-align: center; max-width: 760px; margin: 0 auto 44px; }
.section-head h2 { margin: 14px 0 12px; font-size: clamp(30px, 4vw, 48px); line-height: 1.12; color: var(--brand-deep); }
.section-head p { margin: 0; color: var(--muted); line-height: 1.8; font-size: 16px; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 80;
    background: rgba(255, 255, 255, .86);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(219, 231, 255, .85);
}
.nav-wrap { height: 84px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 900; color: var(--brand); font-size: 20px; }
.brand-logo {
    width: 176px;
    height: 44px;
    background: url("../Images/logo.svg") no-repeat left center / contain;
    filter: brightness(0) saturate(100%) invert(25%) sepia(98%) saturate(3155%) hue-rotate(224deg) brightness(96%) contrast(95%);
}
.site-nav { display: flex; align-items: center; gap: 34px; color: #51607A; font-size: 17px; font-weight: 400; }
.site-nav a { position: relative; padding: 8px 0; white-space: nowrap; }
.site-nav a:hover, .site-nav a.active { color: var(--brand); }
.site-nav a.active::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 3px;
    border-radius: 3px;
    background: var(--brand);
}
.site-nav .nav-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0 20px;
    border-radius: 999px;
    background: var(--brand);
    color: #fff !important;
    box-shadow: var(--shadow-blue);
    transition: transform .22s ease, box-shadow .22s ease, background .22s ease;
}
.site-nav .nav-cta:hover {
    background: var(--brand-2);
    color: #fff !important;
    transform: translateY(-1px);
}
.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border: 1px solid var(--line);
    background: #fff;
    border-radius: 14px;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}
.menu-toggle span { width: 20px; height: 2px; background: var(--brand); border-radius: 2px; transition: .25s ease; }
.menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.fixed-nav {
    position: fixed;
    right: 22px;
    top: 160px;
    z-index: 60;
    width: 86px;
    background: #F3F6FF;
    border: 1px solid rgba(50,70,254,.38);
    border-radius: 18px;
    box-shadow: none;
    overflow: visible;
}
.fixed-nav a,
.fixed-nav-button {
    min-height: 72px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 7px;
    width: 100%;
    padding: 10px 8px;
    border: 0;
    border-bottom: 1px solid rgba(50,70,254,.18);
    color: #08183f;
    background: rgba(255,255,255,.72);
    font: inherit;
    font-size: 12px;
    font-weight: 600;
    text-align: center;
    position: relative;
    cursor: pointer;
}
.fixed-nav > :first-child { border-radius: 18px 18px 0 0; }
.fixed-nav > :last-child { border-bottom: 0; border-radius: 0 0 18px 18px; }
.fixed-nav a svg,
.fixed-nav-button svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    stroke: currentColor;
    stroke-width: 1.6;
    stroke-linecap: round;
    stroke-linejoin: round;
    fill: none;
    transition: transform .2s ease;
}
.fixed-nav a:hover svg,
.fixed-nav-button:hover svg { transform: scale(1.15); }
.fixed-nav a:hover,
.fixed-nav-button:hover,
.fixed-nav-button:focus-visible { color: #fff; background: var(--brand); }
.fixed-tip {
    position: absolute;
    right: calc(100% + 10px);
    top: 50%;
    transform: translate(10px, -50%);
    width: 180px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px 12px;
    border-radius: 12px;
    background: #fff;
    color: var(--brand);
    font-size: 12px;
    line-height: 1.55;
    box-shadow: 0 8px 24px rgba(16,32,74,.16);
    border: 1px solid rgba(50,70,254,.12);
    opacity: 0;
    visibility: hidden;
    transition: .22s ease;
    z-index: 20;
    pointer-events: none;
}
.fixed-tip::before {
    content: "";
    position: absolute;
    right: -7px;
    top: 50%;
    width: 12px;
    height: 12px;
    background: #fff;
    border-top: 1px solid rgba(50,70,254,.12);
    border-right: 1px solid rgba(50,70,254,.12);
    transform: translateY(-50%) rotate(45deg);
}
.fixed-nav-button:hover .fixed-tip,
.fixed-nav-button:focus-visible .fixed-tip { opacity: 1; visibility: visible; transform: translate(0, -50%); pointer-events: auto; }
.hero-section {
    position: relative;
    min-height: 760px;
    display: flex;
    align-items: center;
    padding: 92px 0 80px;
    background:
        radial-gradient(circle at 18% 18%, rgba(32,80,237,.16), transparent 28%),
        linear-gradient(180deg, #FFFFFF 0%, #F5F8FF 100%);
    overflow: hidden;
}
.hero-bg-orb { position: absolute; border-radius: 50%; filter: blur(6px); opacity: .55; }
.hero-bg-orb-one { width: 360px; height: 360px; background: #DDE7FF; right: -90px; top: 120px; }
.hero-bg-orb-two { width: 220px; height: 220px; background: #DFFCF2; left: 44%; bottom: 40px; }
.hero-grid { position: relative; display: grid; grid-template-columns: 1.02fr .98fr; gap: 52px; align-items: center; }
.hero-copy h1 { margin: 18px 0 18px; color: var(--brand-deep); font-size: clamp(44px, 7vw, 82px); line-height: 1.02; letter-spacing: -3px; }
.hero-copy h1 span { color: var(--brand); }
.hero-subtitle { margin: 0; max-width: 650px; color: var(--muted); font-size: 18px; line-height: 1.9; }
.hero-actions { display: grid; gap: 14px; margin: 28px 0 30px; max-width: 590px; }
.hero-download-group { display: grid; gap: 8px; }
.hero-download-title { margin: 0 0 6px; color: var(--brand-deep); font-size: 20px; line-height: 1.2; font-weight: 900; }
.hero-download-row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 7px; }
.hero-download-btn {
    min-height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    padding: 11px 17px;
    border: 2px solid rgba(50,70,254,.35);
    border-radius: 10px;
    background: rgba(255,255,255,.6);
    color: #3246fe;
    box-shadow: 0 1px 4px rgba(50,70,254,.08);
    font-weight: 500;
    transition: .2s ease;
}
.hero-download-btn:hover { transform: translateY(-2px); background: var(--brand); color: #fff; box-shadow: 0 6px 16px rgba(50,70,254,.18); border-color: var(--brand); }
.hero-download-btn:hover .download-sub { color: rgba(255,255,255,.82); }
.hero-download-btn .download-icon { width: 26px; height: 26px; flex: 0 0 26px; display: grid; place-items: center; }
.hero-download-btn .download-icon svg { width: 26px; height: 26px; fill: currentColor; stroke: none; }
.hero-download-btn .download-text { display: flex; flex-direction: column; align-items: flex-start; line-height: 1.12; white-space: nowrap; }
.hero-download-btn .download-main { font-size: 16px; font-weight: 600; }
.hero-download-btn .download-sub { margin-top: 4px; font-size: 12px; font-weight: 400; color: #6680CC; }
.hero-download-btn.pc-only .download-text { align-items: center; }
.hero-download-btn.tutorial .download-main { font-size: 16px; }
.hero-download-btn.version-card { position: relative; overflow: hidden; justify-content: center; }
.hero-download-btn.version-card .download-text { position: relative; display: inline-grid; align-items: center; justify-items: center; min-width: 0; min-height: 34px; }
.hero-download-btn.version-card .download-state { grid-area: 1 / 1; display: flex; flex-direction: column; justify-content: center; transition: opacity .2s ease, transform .2s ease; }
.hero-download-btn.version-card .download-state-default { align-items: center; text-align: center; }
.hero-download-btn.version-card .download-state-hover { align-items: flex-start; opacity: 0; transform: translateY(8px); }
.hero-download-btn.version-card:hover .download-state-default { opacity: 0; transform: translateY(-8px); }
.hero-download-btn.version-card:hover .download-state-hover { opacity: 1; transform: translateY(0); }
.hero-download-btn.version-card .download-state-hover .download-main { font-size: 14px; }
.hero-download-row .btn-wrap { position: relative; min-width: 0; }
.hero-download-row .btn-wrap .hero-download-btn { height: 100%; }
.cydia-tip {
    position: absolute;
    left: 50%;
    bottom: calc(100% + 10px);
    width: 250px;
    min-height: 58px;
    padding: 8px 12px;
    border-radius: 12px;
    background: #fff;
    color: var(--brand);
    font-size: 12px;
    line-height: 1.55;
    box-shadow: 0 8px 24px rgba(16,32,74,.16);
    border: 1px solid rgba(50,70,254,.12);
    opacity: 0;
    visibility: hidden;
    transform: translate(-50%, -6px);
    transition: .22s ease;
    z-index: 20;
    pointer-events: none;
}
.cydia-tip::before {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -7px;
    width: 12px;
    height: 12px;
    background: #fff;
    border-right: 1px solid rgba(50,70,254,.12);
    border-bottom: 1px solid rgba(50,70,254,.12);
    transform: translateX(-50%) rotate(45deg);
}
.cydia-tip p { margin: 0; }
.cydia-tip a { color: #318ddb; text-decoration: underline; }
.hero-download-row .btn-wrap:hover .cydia-tip { opacity: 1; visibility: visible; transform: translate(-50%, 0); pointer-events: auto; }
.console-visual { position: relative; min-height: 430px; display: flex; align-items: center; justify-content: center; }
.console-image { width: 100%; max-width: 640px; border-radius: 28px; filter: drop-shadow(0 32px 50px rgba(8,24,63,.22)); }
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.feature-card {
    min-height: 240px;
    padding: 24px;
    border: 1px solid var(--line);
    border-radius: 24px;
    background: rgba(255,255,255,.88);
    box-shadow: 0 16px 36px rgba(16,32,74,.07);
    transition: .25s ease;
}
.feature-card:hover { transform: translateY(-6px); border-color: var(--brand); box-shadow: 0 22px 44px rgba(32,80,237,.14); }
.feature-icon {
    width: 54px;
    height: 54px;
    display: grid;
    place-items: center;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--soft-2) 0%, #d8e5ff 100%);
    color: var(--brand);
    margin-bottom: 18px;
    box-shadow: 0 4px 12px rgba(32, 80, 237, .10);
    transition: transform .22s ease, box-shadow .22s ease;
}
.feature-icon svg {
    width: 26px;
    height: 26px;
    stroke: var(--brand);
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
    fill: none;
}
.feature-card:hover .feature-icon {
    transform: scale(1.1);
    box-shadow: 0 8px 20px rgba(32, 80, 237, .2);
}
.feature-card h3 { margin: 0 0 10px; color: var(--brand-deep); font-size: 18px; }
.feature-card p { margin: 0; color: var(--muted); line-height: 1.75; font-size: 14px; }

.timeline { position: relative; display: flex; justify-content: center; align-items: stretch; gap: 18px; padding-top: 32px; }
.timeline::before { content: ""; position: absolute; top: 64px; left: 8%; right: 8%; height: 2px; background: var(--line); }
.timeline article {
    position: relative;
    width: fit-content;
    min-width: 128px;
    max-width: 360px;
    padding: 54px 30px 22px;
    border: 1px solid var(--line);
    border-radius: 24px;
    background: #fff;
    box-shadow: 0 16px 36px rgba(16,32,74,.07);
    text-align: center;
}
.timeline article span {
    position: absolute;
    top: -32px;
    left: 50%;
    transform: translateX(-50%);
    width: 64px;
    height: 64px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: var(--brand);
    color: #fff;
    font-weight: 900;
    box-shadow: 0 10px 20px rgba(32,80,237,.22);
}
.timeline article span svg {
    width: 30px;
    height: 30px;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    fill: none;
}
.timeline h3 { margin: 0 0 8px; color: var(--brand-deep); }
.timeline p { width: max-content; max-width: 324px; margin: 0 auto; color: var(--muted); font-size: 14px; line-height: 1.7; text-align: left; }
.showcase-section { background: #fff; }
.showcase-stack { display: grid; gap: 28px; }
.showcase-card {
    display: grid;
    grid-template-columns: .9fr 1.1fr;
    align-items: center;
    gap: 36px;
    padding: 36px;
    border: 0;
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, #FFFFFF, #F7FAFF);
    box-shadow: none;
    overflow: hidden;
}
.showcase-stack .showcase-card:first-child,
.showcase-stack .showcase-card:last-child { background: linear-gradient(315deg, #FFFFFF, #F7FAFF); }
.showcase-card.reverse { grid-template-columns: 1.1fr .9fr; }
.showcase-card.reverse .showcase-copy { order: 2; }
.showcase-copy h2 { margin: 14px 0 14px; color: var(--brand-deep); font-size: clamp(28px, 4vw, 44px); line-height: 1.16; }
.showcase-copy p { margin: 0; color: var(--muted); line-height: 1.9; font-size: 16px; }
.showcase-visual {
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 26px;
    background: #EEF4FF;
    padding: 22px;
}
.showcase-visual img { max-height: 300px; object-fit: contain; filter: none; }
.pricing-section { background: linear-gradient(180deg, var(--soft) 0%, #fff 100%); }
.pricing-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.pricing-grid article {
    padding: 30px 22px;
    border: 1px solid var(--line);
    border-radius: 24px;
    background: #fff;
    text-align: center;
    box-shadow: 0 16px 36px rgba(16,32,74,.07);
}
.pricing-grid span { display: block; color: var(--muted); font-size: 14px; font-weight: 800; margin-bottom: 12px; }
.pricing-grid strong { display: block; color: var(--brand); font-size: 24px; }
.pricing-grid .price-highlight { color: #fa4e5f; }
.site-footer { background: #0d0d0d; color: #DCE6FF; padding: 44px 0; text-align: center; font-size: 14px; }
.footer-brand { color: #fff; font-size: 22px; font-weight: 900; margin-bottom: 12px; }
.site-footer p { margin: 0 0 8px; }
.site-footer a { color: inherit; font-weight: 400; text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
@media (max-width: 1080px) {
    .site-nav {
        position: fixed;
        top: 84px;
        left: 16px;
        right: 16px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 12px;
        border: 1px solid var(--line);
        border-radius: 22px;
        background: rgba(255,255,255,.98);
        box-shadow: var(--shadow);
    }
    .site-nav.active { display: flex; }
    .site-nav a { padding: 14px 16px; border-radius: 12px; }
    .site-nav a:hover { background: var(--soft); }
    .site-nav a.active::after { display: none; }
    .menu-toggle { display: flex; }
    .fixed-nav { display: none; }
    .hero-section { min-height: auto; padding: 72px 0; }
    .hero-grid { grid-template-columns: 1fr; gap: 34px; }
    .console-visual { min-height: 380px; }
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
    .timeline { flex-direction: column; align-items: stretch; padding-top: 32px; }
    .timeline::before { top: 0; bottom: 0; left: 32px; right: auto; width: 2px; height: auto; }
    .timeline article { width: auto; max-width: none; text-align: left; padding: 30px 22px 26px 98px; }
    .timeline article span { left: 32px; top: -32px; transform: translateX(-50%); }
    .timeline p { width: auto; max-width: none; margin: 0; }
    .showcase-card, .showcase-card.reverse { grid-template-columns: 1fr; }
    .showcase-card.reverse .showcase-copy { order: 0; }
    .pricing-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
    .container { width: min(100% - 28px, var(--max)); }
    .section { padding: 64px 0; }
    .brand-logo { width: 148px; }
    .nav-wrap { height: 72px; }
    .site-nav { top: 72px; }
    .hero-copy h1 { letter-spacing: -1.6px; }
    .hero-actions { max-width: none; }
    .hero-download-row { grid-template-columns: 1fr; }
    .hero-download-btn { justify-content: flex-start; }
    .hero-download-btn.version-card { justify-content: center; }
    .hero-download-btn.pc-only .download-text { align-items: flex-start; }
    .hero-download-btn.version-card .download-text { align-items: center; }
    .feature-grid { grid-template-columns: 1fr; }
    .showcase-card { padding: 22px; border-radius: 24px; }
    .showcase-visual { min-height: 220px; }
    .pricing-grid { grid-template-columns: 1fr; }
}