:root { color-scheme: light; --ink: #182230; --muted: #697586; --blue: #2864ed; --line: #eef0f4; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; color: var(--ink); background: #fff; font-synthesis: none; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 100px; }
body { margin: 0; font-size: 15px; line-height: 1.75; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
img { max-width: 100%; height: auto; }
[hidden] { display: none !important; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid #a9c4ff; outline-offset: 4px; }
.section { width: min(1120px, 100%); margin: auto; padding-left: 32px; padding-right: 32px; }
.skip-link { position: fixed; top: -100px; left: 20px; z-index: 20; padding: 10px; background: #fff; color: var(--blue); }
.skip-link:focus { top: 10px; }
.header { position: sticky; top: 0; z-index: 10; background: #fff; border-bottom: 1px solid var(--line); }
.header-inner { max-width: 1184px; margin: auto; padding: 18px 32px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 9px; color: var(--blue); font-size: 22px; font-weight: 700; white-space: nowrap; }
.header nav { display: flex; align-items: center; gap: 30px; font-size: 14px; color: #4c5869; }
.header nav a:hover { color: var(--blue); }
.header .nav-download { padding: 6px 14px; border: 1px solid #e3e8f0; border-radius: 6px; }
.hero { padding-top: 82px; padding-bottom: 72px; text-align: center; }
.eyebrow { font-size: 13px; color: var(--blue); margin: 0 0 16px; }
h1 { font-size: 48px; line-height: 1.35; letter-spacing: -1px; margin: 0 0 20px; font-weight: 750; }
.accent { color: var(--blue); }
.hero-description { color: var(--muted); font-size: 17px; margin: 0 0 32px; }
.hero-actions { display: flex; align-items: center; justify-content: center; gap: 14px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 14px; padding: 10px 21px; border-radius: 6px; font-size: 14px; font-weight: 550; border: 1px solid transparent; }
.primary { background: var(--blue); color: #fff; }
.primary:hover { background: #1e50c5; }
.secondary { border-color: #e3e8f0; background: #fff; }
.secondary:hover { border-color: #b9cbea; color: var(--blue); }
.button[aria-disabled=true] { opacity: .5; pointer-events: none; }
.section-heading { text-align: center; margin-bottom: 32px; }
.section-heading h2 { font-size: 28px; line-height: 1.4; font-weight: 700; margin: 0 0 14px; }
.section-heading p { color: var(--muted); font-size: 14px; margin: 0; }
.features { padding-top: 12px; padding-bottom: 70px; }
.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.feature-card { border: 1px solid var(--line); border-radius: 10px; padding: 27px; background: #fff; box-shadow: 0 2px 3px #18223003; }
.feature-icon { display: flex; align-items: center; justify-content: center; width: 45px; height: 45px; background: #eff5ff; border: 1px solid #e1ebff; border-radius: 9px; color: var(--blue); margin-bottom: 22px; }
.feature-icon svg { width: 24px; height: 24px; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.feature-card h3 { font-size: 17px; margin: 0 0 11px; }
.feature-card p { color: var(--muted); font-size: 13px; line-height: 1.85; margin: 0; }
.plans-section { padding-top: 12px; padding-bottom: 68px; }
.plan-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 17px; }
.plan-card { background: #fff; border: 1px solid #e7ebf1; border-radius: 10px; padding: 25px; display: flex; flex-direction: column; }
.plan-card h3 { font-size: 17px; font-weight: 600; margin: 0 0 20px; }
.plan-price { display: flex; align-items: baseline; gap: 4px; margin: 0 0 3px; }
.plan-price strong { font-size: 34px; font-weight: 650; line-height: 1.4; }
.plan-price>span { font-size: 14px; }
.plan-duration { font-size: 12px; color: var(--muted); margin-bottom: 25px; }
.plan-quota { font-size: 12px; display: flex; align-items: baseline; gap: 5px; margin: 0 0 23px; padding-top: 20px; border-top: 1px solid var(--line); }
.plan-quota strong { font-size: 19px; font-weight: 600; }
.plan-card>a { display: block; border: 1px solid #dce5f4; color: var(--blue); border-radius: 5px; text-align: center; padding: 8px 4px; font-size: 12px; margin-top: auto; }
.plan-card>a:hover { background: #f5f8ff; }
.plan-note { margin: 20px 0 0; color: #8b95a3; text-align: center; font-size: 11px; }
.loading-message { grid-column: 1 / -1; color: var(--muted); text-align: center; font-size: 13px; padding: 30px; }
.fetch-error { text-align: center; padding: 15px; font-size: 13px; color: var(--muted); }
.fetch-error button { background: #fff; border: 1px solid #dce5f4; color: var(--blue); padding: 7px 15px; border-radius: 5px; }
.download-section { padding-top: 54px; padding-bottom: 46px; background: #f9fafc; border-top: 1px solid #f1f3f7; border-bottom: 1px solid #f1f3f7; text-align: center; }
.download-section .section-heading { margin-bottom: 20px; }
.release-info { color: #8993a3; font-size: 12px; margin: 0 0 20px; }
.other-browsers { margin-top: 16px; color: var(--muted); font-size: 12px; }
.other-browsers summary { cursor: pointer; }
.other-browsers .hero-actions { margin-top: 12px; }
.browser-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 20px; font-size: 12px; color: #5b75a6; margin: 20px 0 26px; }
.browser-links a:hover { color: var(--blue); }
.install-guide { color: var(--muted); font-size: 12px; line-height: 1.85; }
.install-guide strong { color: #4d5a6b; font-size: 13px; font-weight: 600; }
.install-guide p { margin: 5px 0; }
.install-guide code { font-size: 11px; overflow-wrap: anywhere; }
.checksum { font-size: 11px; color: #8b95a3; max-width: 580px; margin: 15px auto 0; }
.checksum summary { cursor: pointer; }
.checksum code { display: block; font-size: 10px; overflow-wrap: anywhere; margin-top: 8px; }
.faq-section { max-width: 864px; padding-top: 60px; padding-bottom: 52px; }
.faq-section .section-heading { margin-bottom: 22px; }
.faq-list details { border-bottom: 1px solid var(--line); padding: 16px 0; }
.faq-list summary { display: flex; justify-content: space-between; align-items: center; gap: 20px; font-size: 13px; font-weight: 500; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary:after { content: "+"; font-size: 19px; color: #9ca6b4; font-weight: 400; }
.faq-list details[open] summary:after { content: "−"; }
.faq-list p { color: var(--muted); font-size: 12px; margin: 12px 26px 0 0; line-height: 1.85; }
.contact-section { max-width: 864px; padding-top: 15px; padding-bottom: 55px; display: flex; justify-content: space-between; align-items: center; gap: 30px; }
.contact-section h2 { margin: 0 0 9px; font-size: 22px; font-weight: 650; }
.contact-section p { color: var(--muted); font-size: 13px; margin: 0; }
.contact-section .contact-text { color: var(--ink); white-space: pre-wrap; margin-top: 15px; overflow-wrap: anywhere; }
.contact-image-wrap { width: 138px; padding: 5px; border: 1px solid var(--line); background: #fff; border-radius: 7px; flex: none; }
.contact-image-wrap img { display: block; aspect-ratio: 1; object-fit: contain; }
.footer { border-top: 1px solid var(--line); }
.footer-inner { padding-top: 24px; padding-bottom: 25px; display: flex; align-items: center; justify-content: space-between; gap: 25px; }
.footer .brand { font-size: 15px; }
.footer p { color: #8b95a3; font-size: 10px; margin: 0; }
.footer-inner>span { color: #8b95a3; font-size: 11px; white-space: nowrap; }
@media(max-width:800px) { .header nav { gap: 18px; font-size: 12px; } .brand { font-size: 20px; } .hero { padding-top: 64px; padding-bottom: 56px; } h1 { font-size: 42px; } .feature-card { padding: 22px; } .feature-grid { gap: 15px; } .feature-card p { font-size: 12px; } .plan-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } .footer-inner { flex-wrap: wrap; gap: 15px; } .footer p { order: 3; width: 100%; } }
@media(max-width:560px) { html { scroll-padding-top: 85px; } .section { padding-left: 22px; padding-right: 22px; } .header-inner { padding: 14px 22px; gap: 15px; } .brand { font-size: 19px; gap: 7px; } .header nav>a:not(.nav-download) { display: none; } .header .nav-download { padding: 5px 12px; } .hero { padding-top: 46px; padding-bottom: 45px; } h1 { font-size: 34px; margin-bottom: 16px; } .eyebrow { font-size: 12px; margin-bottom: 13px; } .hero-description { font-size: 14px; max-width: 300px; margin: 0 auto 26px; } .button { padding: 9px 18px; font-size: 13px; } .section-heading { margin-bottom: 25px; } .section-heading h2 { font-size: 24px; margin-bottom: 10px; } .section-heading p { font-size: 12px; } .feature-grid { grid-template-columns: 1fr; gap: 12px; } .feature-card { padding: 22px; } .feature-icon { margin-bottom: 15px; width: 40px; height: 40px; } .feature-card h3 { font-size: 16px; margin-bottom: 7px; } .features { padding-bottom: 44px; } .plan-grid { gap: 12px; } .plan-card { padding: 21px 17px; } .plan-card h3 { font-size: 15px; } .plan-price strong { font-size: 30px; } .plan-quota { font-size: 11px; gap: 4px; } .plan-quota strong { font-size: 17px; } .plan-duration { font-size: 11px; } .plan-note { font-size: 10px; } .plans-section { padding-bottom: 44px; } .download-section { padding-top: 40px; padding-bottom: 35px; } .faq-section { padding-top: 43px; padding-bottom: 33px; } .faq-list summary { font-size: 12px; } .contact-section { align-items: flex-start; flex-direction: column; padding-bottom: 37px; gap: 20px; } .contact-section h2 { font-size: 21px; } .contact-section p { font-size: 12px; } .footer-inner { gap: 13px; padding-top: 19px; padding-bottom: 20px; } }
@media(max-width:360px) { .plan-grid { grid-template-columns: 1fr; } }
@media(prefers-reduced-motion:reduce) { html { scroll-behavior: auto; } }