:root {
    color-scheme: light;
    --paper: #f8f8f3;
    --white: #fff;
    --ink: #182822;
    --muted: #52625a;
    --forest: #183a30;
    --green: #2d604c;
    --lime: #d5f49d;
    --line: #dce3da;
    --gutter: clamp(16px, 4.5vw, 64px);
    --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-padding-top: 86px; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 1rem/1.7 var(--sans); }
h1, h2, h3, p, ul { margin: 0; }
h1, h2, h3 { line-height: 1.2; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
:focus-visible { outline: 2px solid #2c73ba; outline-offset: 4px; }
[tabindex="-1"]:focus { outline: none; }

.shell { width: min(1200px, calc(100% - var(--gutter) * 2)); margin-inline: auto; }
.skip-link {
    position: fixed;
    z-index: 4;
    top: 10px;
    left: var(--gutter);
    transform: translateY(-180%);
    padding: 8px 16px;
    border-radius: 8px;
    background: var(--forest);
    color: var(--white);
}
.skip-link:focus { transform: none; }

.site-header {
    position: sticky;
    top: 0;
    z-index: 2;
    border-bottom: 1px solid var(--line);
    background: var(--paper);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 71px; }
.brand { display: inline-flex; flex: none; align-items: center; gap: 10px; font-size: 1.12rem; font-weight: 750; }
.site-nav { display: flex; align-items: center; gap: clamp(12px, 2.8vw, 36px); font-size: .92rem; font-weight: 600; }
.site-nav a { display: inline-flex; align-items: center; min-height: 44px; white-space: nowrap; }
.site-nav a:hover { color: var(--green); text-decoration: underline; text-underline-offset: 4px; }
.site-nav .nav-contact { padding-inline: 16px; border: 1px solid var(--line); border-radius: 8px; }

.hero {
    display: grid;
    grid-template-columns: 1.08fr 1fr;
    align-items: center;
    gap: clamp(32px, 5vw, 80px);
    padding-block: clamp(60px, 7vw, 110px);
}
.eyebrow {
    color: var(--green);
    font-size: .875rem;
    font-weight: 700;
    letter-spacing: .06em;
}
.hero h1 {
    margin-block: 19px 24px;
    font-size: clamp(2.55rem, 5.25vw, 4.85rem);
    letter-spacing: -.065em;
    line-height: 1.15;
}
.hero h1 em { color: var(--green); font-style: normal; }
.hero-intro { max-width: 31em; color: var(--muted); font-size: clamp(1rem, 1.4vw, 1.15rem); }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 32px; }
.actions .button { min-width: 108px; }
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 10px 19px;
    border: 1px solid transparent;
    border-radius: 9px;
    font-size: .95rem;
    font-weight: 700;
    line-height: 1.4;
}
.button-primary { background: var(--forest); color: var(--white); }
.button-primary:hover { background: var(--green); }
.button-secondary { border-color: #cbd7cd; color: var(--forest); }
.button-secondary:hover { background: #edf2e9; border-color: #a0b4a5; }
.button-light { background: var(--lime); color: var(--forest); overflow-wrap: anywhere; }
.button-light:hover { background: #ebffcb; }

.hero-art {
    position: relative;
    isolation: isolate;
    overflow: hidden;
    display: grid;
    min-height: 368px;
    border-radius: 24px;
    background:
        radial-gradient(ellipse at 65% 34%, #2f5746, transparent 72%),
        #17362d;
}
.hero-art::before {
    position: absolute;
    z-index: -1;
    inset: 0;
    background-image: linear-gradient(#d5f49d14 1px, transparent 1px), linear-gradient(90deg, #d5f49d14 1px, transparent 1px);
    background-size: 30px 30px;
    background-position: center;
    mask-image: radial-gradient(ellipse, #000 18%, transparent 84%);
    content: "";
}
.orbital-lines { position: absolute; width: 92%; height: 92%; inset: 4%; color: #9ec58b; }
.orbit-app {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 12px;
    width: 160px;
    padding: 11px;
    border-radius: 15px;
    box-shadow: 0 14px 32px #091c1580;
    color: var(--ink);
    background: #f9fcf3;
}
.orbit-app img { width: 48px; border-radius: 11px; }
.orbit-app small, .orbit-app strong { display: block; white-space: nowrap; }
.orbit-app small { color: var(--muted); font-size: .69rem; }
.orbit-app strong { font-size: 1rem; }
.orbit-reader { left: 12%; top: 29%; transform: rotate(-8deg); }
.orbit-ant { right: 11%; bottom: 25%; transform: rotate(8deg); }

.products-section { padding-block: clamp(45px, 6.5vw, 86px); border-block: 1px solid var(--line); background: #eff2ea; }
.section-heading { display: flex; justify-content: space-between; align-items: baseline; gap: 12px 28px; margin-bottom: 26px; }
h2 { font-size: clamp(1.85rem, 3.3vw, 2.75rem); letter-spacing: -.04em; }
.section-heading > p, .about-copy p { color: var(--muted); }
.product-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
.product-card {
    display: flex;
    flex-direction: column;
    min-width: 0;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: var(--white);
}
.product-art {
    position: relative;
    isolation: isolate;
    display: grid;
    min-height: 156px;
    place-items: center;
    overflow: hidden;
}
.reader-art { background: #dae9ef; }
.ant-art { background: #fae5d9; }
.product-art::before, .product-art::after {
    position: absolute;
    z-index: -1;
    width: 75%;
    height: 215%;
    pointer-events: none;
    content: "";
}
.reader-art::before, .reader-art::after {
    border: 1px solid #56839b58;
    border-radius: 12px;
    box-shadow: 0 0 0 14px #c3dce6, 0 0 0 15px #56839b4d, 0 0 0 33px #d6e5ec, 0 0 0 34px #56839b38;
    transform: rotate(-24deg);
}
.reader-art::before { inset: 38% auto auto -36%; }
.reader-art::after { inset: auto -35% 28% auto; }
.ant-art::before, .ant-art::after {
    border: 1px solid #b8665055;
    border-radius: 51% 49% 63% 37% / 38% 59% 41% 62%;
    box-shadow: 0 0 0 13px #f5dbcf, 0 0 0 14px #b8665048, 0 0 0 29px #fae5d9, 0 0 0 30px #b866503f;
    transform: rotate(-33deg);
}
.ant-art::before { inset: -95% auto auto -26%; }
.ant-art::after { inset: auto -24% -88% auto; }
.product-art img { filter: drop-shadow(0 9px 16px #18282230); }
.product-body { display: flex; flex: 1; flex-direction: column; align-items: start; padding: clamp(20px, 3vw, 30px); }
.product-category { color: var(--green); font-size: .78rem; font-weight: 700; }
.product-body h3 { margin-block: 6px 8px; font-size: 1.55rem; }
.product-description { flex: 1; color: var(--muted); }
.product-link, .back-link {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    color: var(--green);
    font-size: .92rem;
    font-weight: 700;
    text-decoration: underline;
    text-underline-offset: 4px;
}
.product-link { margin-top: 10px; }
.product-link:hover, .back-link:hover { color: var(--forest); text-decoration-thickness: 2px; }

.about-section { display: grid; grid-template-columns: 1fr 1.35fr; gap: 18px 38px; padding-block: clamp(50px, 7vw, 96px); }
.about-copy h3 { margin-bottom: 10px; font-size: clamp(1.1rem, 2vw, 1.45rem); }
.about-copy p { max-width: 39em; }
.contact-section { margin-bottom: clamp(46px, 6vw, 78px); }
.contact-panel {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 22px 36px;
    padding: clamp(24px, 5vw, 52px);
    border-radius: 18px;
    background: var(--forest);
    color: var(--white);
}
.contact-panel p { margin-top: 9px; color: #d7e3d9; }

.site-footer { padding-block: 26px; border-top: 1px solid var(--line); }
.footer-top, .footer-meta { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px 24px; }
.footer-top { padding-bottom: 18px; }
.footer-meta { border-top: 1px solid var(--line); padding-top: 15px; color: var(--muted); font-size: .81rem; }
.footer-nav, .filings { display: flex; align-items: center; flex-wrap: wrap; gap: 6px 18px; }
.footer-nav { font-size: .9rem; font-weight: 600; }
.footer-nav a, .filings a { display: inline-flex; align-items: center; min-height: 44px; }
.footer-nav a:hover, .footer-nav [aria-current], .filings a { text-decoration: underline; text-underline-offset: 4px; }
.filings { list-style: none; padding: 0; }
.filings a:hover { color: var(--forest); }

.detail-page { padding-block: 24px clamp(46px, 6vw, 78px); }
.detail-hero {
    display: grid;
    grid-template-columns: 1fr .9fr;
    align-items: center;
    gap: clamp(24px, 5vw, 76px);
    margin-top: 12px;
    padding-bottom: clamp(42px, 6vw, 80px);
}
.detail-hero h1 { margin-block: 8px 14px; font-size: clamp(2.9rem, 6vw, 5rem); letter-spacing: -.06em; }
.detail-lead { font-size: clamp(1.15rem, 2.2vw, 1.65rem); font-weight: 700; }
.detail-description { max-width: 34em; margin-top: 8px; color: var(--muted); }
.detail-hero .product-art { min-height: 310px; border-radius: 22px; }
.detail-section { margin-bottom: clamp(38px, 6vw, 72px); }
.feature-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
    padding: 0;
    margin-top: 20px;
    list-style: none;
}
.feature-grid li { padding: clamp(16px, 3vw, 25px); border: 1px solid var(--line); border-radius: 13px; background: var(--white); }
.feature-grid h3 { margin-bottom: 8px; font-size: 1.12rem; }
.feature-grid p, .agreements > p { color: var(--muted); }
.agreements { margin: 0; padding: clamp(22px, 4vw, 42px); border: 1px solid var(--line); border-radius: 18px; background: #eff2ea; }
.agreements h2 { font-size: clamp(1.6rem, 2.6vw, 2rem); }
.agreements > p { margin-top: 9px; }
.agreement-links { display: flex; flex-wrap: wrap; gap: 10px; padding: 0; margin-top: 16px; list-style: none; }

@media (max-width: 850px) {
    .hero { grid-template-columns: 1fr; padding-block: 48px; }
    .hero h1 { font-size: clamp(2.5rem, 7.5vw, 4.25rem); }
    .hero-art { min-height: clamp(244px, 52vw, 385px); }
    .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 600px) {
    html { scroll-padding-top: 70px; }
    .header-inner { min-height: 59px; }
    .brand { font-size: 1rem; gap: 6px; }
    .brand img { width: 30px; }
    .site-nav { gap: clamp(6px, 2vw, 14px); font-size: .78rem; }
    .site-nav .nav-contact { padding-inline: 0; border: 0; }
    .hero { padding-block: 38px; gap: 27px; }
    .hero h1 { margin-block: 13px 16px; }
    .actions { margin-top: 22px; }
    .hero-art { border-radius: 16px; }
    .orbit-app { width: 130px; padding: 8px; gap: 7px; border-radius: 12px; }
    .orbit-app img { width: 37px; }
    .orbit-app strong { font-size: .89rem; }
    .orbit-reader { left: 10%; top: 25%; }
    .orbit-ant { right: 8%; bottom: 24%; }
    .section-heading { align-items: start; flex-direction: column; }
    .product-grid, .about-section, .detail-hero { grid-template-columns: 1fr; }
    .footer-meta { gap: 4px; }
    .filings { column-gap: 12px; }
    .detail-hero .product-art { min-height: 198px; border-radius: 16px; }
    .detail-hero .product-art img { width: 90px; }
}

@media (prefers-reduced-motion: no-preference) {
    html { scroll-behavior: smooth; }
}