/* 官网公共样式：品牌色、排版和布局统一在这里调整。 */
:root {
  --brand: #ff9800;
  --brand-deep: #a84b00;
  --ink: #202a30;
  --muted: #606b72;
  --surface: #fff;
  --canvas: #f5f7f8;
  --border: #dce2e5;
  --footer: #142129;
  --footer-text: #c7d0d4;
  --focus: #965000;
  --scrollbar-thumb: #87949c;
  --scrollbar-track: #f0f3f4;
  --scrollbar-hover: #53636c;
  --radius: 8px;
  --ease: 180ms ease;
  font-family: "Avenir Next", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  color: var(--ink);
  background: var(--surface);
  font-synthesis: none;
  scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
  scrollbar-width: auto;
  scrollbar-gutter: stable;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 104px; }
body { margin: 0; font-size: 16px; line-height: 1.75; }
body, * { scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track); }
::-webkit-scrollbar { width: 11px; height: 11px; }
::-webkit-scrollbar-track { background: var(--scrollbar-track); }
::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border: 3px solid var(--scrollbar-track); border-radius: 8px; }
::-webkit-scrollbar-thumb:hover { background: var(--scrollbar-hover); }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; cursor: pointer; }
button, summary { cursor: pointer; }
button { font: inherit; }
button, a, summary { -webkit-tap-highlight-color: transparent; }
a, button, summary { transition: color var(--ease), background-color var(--ease), border-color var(--ease), transform var(--ease); }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid var(--focus); outline-offset: 5px; }
a:active, button:active { transform: translateY(1px); }
a:hover { color: var(--brand-deep); }
button:disabled { cursor: not-allowed; opacity: .55; }
button:disabled:hover { transform: none; }
button[aria-disabled="true"] { cursor: not-allowed; }
svg { flex: none; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3 { line-height: 1.28; letter-spacing: -.045em; font-weight: 600; text-wrap: balance; }
h1 { font-size: clamp(40px, 5.4vw, 72px); }
h2 { font-size: clamp(30px, 3vw, 44px); }
h3 { font-size: 24px; }
p { text-wrap: pretty; }
small { font-size: 13px; }
.wrap { width: min(1240px, calc(100% - 96px)); margin-inline: auto; }
.wide { width: min(1440px, calc(100% - 48px)); margin-inline: auto; }
.section { padding-block: 112px; }
.eyebrow { display: flex; align-items: center; gap: 10px; color: var(--brand-deep); font-size: 12px; font-weight: 700; letter-spacing: .16em; margin-bottom: 22px; }
.eyebrow::before { content: ""; width: 24px; height: 2px; background: var(--brand); }
.muted { color: var(--muted); }
.text-link { display: inline-flex; align-items: center; gap: 22px; min-height: 44px; font-size: 15px; font-weight: 600; border-bottom: 1px solid currentColor; }
.text-link:hover { gap: 28px; }
.arrow { font-size: 21px; font-weight: 400; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 28px; padding: 13px 24px; min-height: 50px; border: 1px solid var(--brand); border-radius: 3px; background: var(--brand); color: var(--ink); font-size: 15px; font-weight: 600; }
.button:hover { color: var(--ink); background: #ffaf39; border-color: #ffaf39; }
.button.outline { border-color: var(--border); background: transparent; }
.button.outline:hover { border-color: var(--brand-deep); color: var(--brand-deep); }
.skip-link { position: fixed; top: -100px; left: 16px; z-index: 100; background: var(--surface); padding: 12px 20px; }
.skip-link:focus { top: 12px; }
.site-header { position: sticky; top: 0; z-index: 20; background: var(--surface); border-bottom: 1px solid var(--border); }
.header-inner { height: 90px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 10px; flex: none; }
.brand img { width: 43px; height: 43px; object-fit: contain; }
.brand-word { font-size: 29px; font-weight: 650; line-height: 1; letter-spacing: -.055em; }
.brand-note { font-size: 10px; color: var(--muted); letter-spacing: .16em; margin-top: 6px; }
.site-nav { display: flex; align-items: center; gap: 32px; font-size: 14px; }
.site-nav a { display: inline-flex; min-height: 44px; align-items: center; border-bottom: 2px solid transparent; }
.site-nav a:hover, .site-nav a[aria-current="page"] { border-color: var(--brand); color: var(--brand-deep); }
.site-nav .contact-nav { padding: 0 18px; border: 1px solid var(--border); border-radius: 3px; margin-left: 10px; }
.site-nav .contact-nav:hover { border-color: var(--brand); }
.menu-button { display: none; min-width: 44px; min-height: 44px; border: 1px solid var(--border); border-radius: 3px; background: var(--surface); }
.menu-button:hover { background: var(--canvas); }
.hero { position: relative; isolation: isolate; display: flex; align-items: center; min-height: 640px; color: var(--surface); overflow: clip; background: var(--footer); }
.hero-image { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -2; }
.hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(11,24,34,.82), rgba(11,24,34,.26) 65%, rgba(11,24,34,.04)); z-index: -1; }
.hero-content { padding-block: 96px 120px; }
.hero .eyebrow { color: #ffca80; margin-bottom: 28px; }
.hero h1 { max-width: 790px; letter-spacing: -.035em; }
.hero h1 span { color: #ffb64d; }
.hero-copy { max-width: 490px; color: #e0e6e9; font-size: 17px; margin-top: 28px; line-height: 1.9; }
.hero-actions { display: flex; align-items: center; gap: 34px; margin-top: 38px; }
.hero-actions .text-link { color: var(--surface); border-bottom-color: #9aa6ad; }
.hero-actions .text-link:hover { color: #ffca80; }
.hero-caption { position: absolute; right: 30px; bottom: 20px; font-size: 11px; color: #e0e6e9; }
.hero-bottom { position: absolute; bottom: 24px; left: max(48px, calc((100% - 1240px)/2)); display: flex; gap: 14px; align-items: center; font-size: 11px; letter-spacing: .12em; color: #e0e6e9; }
.hero-bottom i { display: block; width: 44px; height: 1px; background: #e0e6e9; }
.process-strip { display: grid; grid-template-columns: repeat(4, 1fr); padding-block: 30px; border-bottom: 1px solid var(--border); }
.process-step { display: flex; gap: 16px; align-items: center; justify-content: center; border-right: 1px solid var(--border); }
.process-step:last-child { border: 0; }
.process-step svg { color: var(--brand-deep); width: 28px; height: 28px; }
.process-step strong { display: block; font-size: 15px; font-weight: 600; }
.process-step small { color: var(--muted); font-size: 10px; letter-spacing: .09em; }
.section-heading { display: flex; justify-content: space-between; gap: 40px; align-items: end; margin-bottom: 48px; }
.section-heading p { max-width: 430px; color: var(--muted); font-size: 15px; }
.product-layout { display: grid; grid-template-columns: 1.12fr 1fr; gap: 80px; align-items: center; }
.product-gallery { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; }
.product-frame { height: 470px; position: relative; overflow: hidden; }
.product-frame img { width: 100%; height: 100%; object-fit: contain; }
.image-label { font-size: 11px; color: var(--muted); text-align: right; }
.gallery-controls { display: flex; gap: 10px; justify-content: center; margin-top: 16px; }
.gallery-controls button { min-height: 44px; padding: 8px 18px; border: 1px solid var(--border); border-radius: 3px; font-size: 12px; background: var(--surface); color: var(--muted); }
.gallery-controls button:hover { border-color: var(--brand-deep); color: var(--brand-deep); }
.gallery-controls button[aria-pressed="true"] { border-color: var(--brand); background: #fff4e5; color: var(--brand-deep); }
.product-copy .tag { display: inline-flex; font-size: 12px; color: var(--brand-deep); border: 1px solid #eec99e; padding: 4px 12px; margin-bottom: 24px; }
.product-copy h3 { font-size: 33px; }
.product-copy > p { margin-top: 22px; color: var(--muted); }
.spec-list { margin: 30px 0; }
.spec-list div { display: grid; grid-template-columns: 100px 1fr; padding: 14px 0; border-bottom: 1px solid var(--border); font-size: 14px; }
.spec-list dt { color: var(--muted); }
.spec-list dd { margin: 0; }
.product-note { display: block; color: var(--muted); margin-top: 18px; font-size: 12px; }
.platform-section { background: var(--canvas); }
.flow { display: grid; grid-template-columns: repeat(4, 1fr); padding: 48px 24px; border: 1px solid var(--border); background: var(--surface); border-radius: var(--radius); }
.flow-node { position: relative; text-align: center; padding: 8px 12px; }
.flow-node:not(:last-child)::after { content: "→"; position: absolute; right: -11px; top: 40px; font-size: 24px; color: var(--brand-deep); }
.flow-icon { display: grid; place-items: center; width: 76px; height: 76px; margin: 0 auto 18px; background: #fff4e5; color: var(--brand-deep); border-radius: 50%; }
.flow-icon svg { width: 33px; height: 33px; }
.flow-node h3 { font-size: 17px; }
.flow-node p { font-size: 13px; color: var(--muted); margin-top: 8px; }
.capabilities { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; margin-top: 40px; }
.capability { padding-top: 24px; border-top: 1px solid var(--border); }
.capability h3 { font-size: 19px; margin-bottom: 12px; }
.capability p { color: var(--muted); font-size: 14px; }
.app-section { display: grid; grid-template-columns: 1fr 1fr; gap: 96px; align-items: center; }
.app-copy > p { margin: 26px 0; color: var(--muted); max-width: 460px; }
.feature-line { display: flex; align-items: flex-start; gap: 16px; margin: 22px 0; }
.feature-line svg { width: 21px; height: 21px; color: var(--brand-deep); margin-top: 3px; }
.feature-line h3 { font-size: 16px; }
.feature-line p { font-size: 13px; color: var(--muted); margin-top: 5px; }
.app-copy .text-link { margin-top: 12px; }
.app-stage { min-height: 570px; display: grid; place-items: center; position: relative; background: var(--canvas); border-radius: var(--radius); overflow: clip; }
.app-stage::before { content: ""; position: absolute; width: 300px; height: 300px; border: 1px solid #e9be85; border-radius: 50%; }
.app-stage::after { content: ""; position: absolute; width: 460px; height: 460px; border: 1px solid #e8ded0; border-radius: 50%; }
.phone { position: relative; z-index: 1; width: 264px; border: 7px solid #263139; border-radius: 34px; padding: 16px 14px 12px; background: #f6f5ef; box-shadow: 0 22px 50px #1527351c; }
.phone-top { width: 62px; height: 13px; border-radius: 15px; background: #263139; margin: -6px auto 18px; }
.phone-heading { font-size: 15px; font-weight: 700; }
.phone-connected { display: block; color: #3d7255; font-size: 10px; margin: 3px 0 14px; }
.phone-energy { border-radius: 13px; background: #fce9cd; padding: 16px 12px; }
.phone-energy small { color: #865221; font-size: 10px; }
.phone-energy strong { display: block; font-size: 26px; margin: 8px 0; line-height: 1.2; font-weight: 600; }
.phone-flow { display: flex; justify-content: space-between; font-size: 10px; padding-top: 12px; border-top: 1px solid #e4c69c; }
.phone-data { background: var(--surface); margin-top: 12px; border-radius: 11px; padding: 12px; }
.phone-data h4 { font-size: 11px; margin: 0 0 9px; }
.phone-numbers { display: flex; justify-content: space-between; font-size: 16px; font-weight: 600; }
.phone-numbers small { font-size: 9px; font-weight: 400; }
.phone-tabs { display: flex; justify-content: space-around; font-size: 10px; color: var(--muted); padding-top: 16px; }
.phone-tabs span:first-child { color: var(--brand-deep); }
.app-caption { position: absolute; bottom: 16px; font-size: 11px; color: var(--muted); z-index: 1; }
.about-band { background: var(--canvas); }
.about-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 96px; }
.about-copy p { color: var(--muted); margin-bottom: 20px; }
.company-name { display: block; font-size: 17px; margin-bottom: 22px; color: var(--ink); font-weight: 600; }
.contact-section { display: grid; grid-template-columns: .9fr 1.1fr; gap: 90px; }
.contact-list { margin: 0; }
.contact-list > div { padding: 18px 0; border-bottom: 1px solid var(--border); }
.contact-list dt { font-size: 12px; color: var(--muted); margin-bottom: 6px; }
.contact-list dd { margin: 0; font-size: 17px; overflow-wrap: anywhere; }
.contact-list a { display: inline-flex; align-items: center; min-height: 36px; }
.site-footer { background: var(--footer); color: var(--footer-text); padding: 60px 0 24px; }
.footer-main { display: flex; justify-content: space-between; gap: 48px; padding-bottom: 48px; }
.footer-brand { font-size: 29px; color: var(--surface); font-weight: 600; letter-spacing: -.04em; }
.footer-company { font-size: 13px; margin-top: 10px; }
.footer-links { display: flex; gap: 64px; }
.footer-links strong { display: block; color: var(--surface); font-size: 13px; margin-bottom: 16px; }
.footer-links a { display: block; font-size: 13px; min-height: 36px; }
.site-footer a:hover { color: #ffc16d; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 22px; border-top: 1px solid #42515a; font-size: 11px; }
.footer-bottom a { display: inline-flex; align-items: center; min-height: 32px; }
.support-hero { background: var(--canvas); padding: 72px 0; }
.breadcrumbs { font-size: 12px; color: var(--muted); margin-bottom: 24px; display: flex; gap: 12px; align-items: center; }
.breadcrumbs a { min-height: 32px; display: inline-flex; align-items: center; }
.support-hero h1 { font-size: 46px; }
.support-hero p { margin-top: 20px; color: var(--muted); max-width: 650px; }
.support-layout { display: grid; grid-template-columns: 220px 1fr; gap: 70px; }
.support-aside a { display: block; min-height: 48px; padding: 12px 0; font-size: 14px; border-bottom: 1px solid var(--border); }
.support-aside a:hover { border-color: var(--brand); }
.support-content h2 { font-size: 28px; margin-bottom: 24px; }
.download-card { border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; }
.download-title { display: flex; gap: 18px; align-items: center; }
.download-title img { width: 60px; height: 60px; border-radius: 13px; }
.download-title h3 { font-size: 24px; }
.download-title p { font-size: 13px; color: var(--muted); margin-top: 5px; }
.download-description { color: var(--muted); font-size: 14px; margin: 24px 0; }
.download-meta { display: flex; flex-wrap: wrap; gap: 12px 30px; font-size: 12px; color: var(--muted); margin-bottom: 24px; }
.download-actions { display: flex; gap: 24px; align-items: center; flex-wrap: wrap; }
.download-actions .text-link { font-size: 13px; }
.download-hint { min-height: 24px; font-size: 12px; color: var(--muted); margin-top: 16px; }
.platform-guidance { font-size: 13px; color: var(--brand-deep); padding: 14px; background: #fff4e5; border-left: 2px solid var(--brand); margin-top: 18px; }
[hidden] { display: none !important; }
.checksum { margin-top: 24px; padding-top: 18px; border-top: 1px solid var(--border); }
.checksum summary { font-size: 12px; color: var(--muted); min-height: 36px; display: flex; align-items: center; gap: 8px; }
.checksum summary::before { content: "+"; font-size: 17px; }
.checksum[open] summary::before { content: "−"; }
.checksum code { display: block; padding: 12px; background: var(--canvas); font-size: 11px; overflow-wrap: anywhere; }
.support-block { margin-top: 64px; scroll-margin-top: 110px; }
.guide-list { padding-left: 22px; margin: 0; color: var(--muted); font-size: 14px; }
.guide-list li { margin: 14px 0; padding-left: 8px; }
.guide-list strong { color: var(--ink); }
.faq { border-bottom: 1px solid var(--border); }
.faq summary { padding: 20px 32px 20px 0; position: relative; list-style: none; font-size: 15px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 2px; top: 16px; font-size: 24px; color: var(--brand-deep); }
.faq[open] summary::after { content: "−"; }
.faq summary:hover { color: var(--brand-deep); }
.faq > p { color: var(--muted); font-size: 14px; padding: 0 24px 22px 0; }
.legal { max-width: 800px; padding-block: 64px 100px; }
.legal h1 { font-size: 34px; margin: 28px 0; }
.legal h2 { font-size: 23px; margin: 40px 0 18px; }
.legal p, .legal li { margin-bottom: 16px; color: var(--muted); }
.legal a { color: var(--brand-deep); text-decoration: underline; overflow-wrap: anywhere; }
.not-found { min-height: 55vh; display: grid; align-content: center; justify-items: start; gap: 24px; }
@media (max-width: 1000px) {
  .wrap { width: calc(100% - 64px); }
  .site-nav { gap: 20px; }
  .product-layout, .app-section, .about-layout, .contact-section { gap: 40px; }
  .product-frame { height: 390px; }
  .support-layout { grid-template-columns: 160px 1fr; gap: 36px; }
}
@media (max-width: 760px) {
  html { scroll-padding-top: 88px; }
  .wrap { width: calc(100% - 40px); }
  .wide { width: 100%; }
  .section { padding-block: 64px; }
  .header-inner { height: 76px; flex-wrap: wrap; gap: 0; }
  .brand-word { font-size: 26px; }
  .brand img { width: 38px; height: 38px; }
  .menu-button { display: grid; place-items: center; }
  .site-header.menu-open .header-inner { height: auto; padding-top: 16px; }
  .site-nav { display: none; flex-basis: 100%; padding: 20px 0 16px; align-items: stretch; gap: 0; }
  .site-header.menu-open .site-nav { display: flex; flex-direction: column; }
  .site-nav a { min-height: 48px; border-bottom: 1px solid var(--border); }
  .site-nav .contact-nav { margin: 8px 0 0; padding-left: 0; border: 0; }
  .hero { min-height: 590px; }
  .hero-image { object-position: 65% center; }
  .hero::after { background: linear-gradient(90deg, rgba(11,24,34,.87), rgba(11,24,34,.43)); }
  .hero-content { padding-block: 70px 110px; }
  .hero h1 { font-size: clamp(36px, 8.6vw, 56px); }
  .hero-copy { font-size: 15px; max-width: 410px; }
  .hero-actions { gap: 24px; flex-wrap: wrap; }
  .hero-bottom { left: 20px; bottom: 28px; font-size: 10px; }
  .hero-caption { font-size: 9px; right: 16px; bottom: 8px; }
  .process-strip { grid-template-columns: 1fr 1fr; gap: 24px 8px; }
  .process-step:nth-child(2) { border: 0; }
  .process-step { justify-content: flex-start; padding-left: 10px; gap: 10px; }
  .process-step strong { font-size: 13px; }
  .process-step small { font-size: 9px; }
  .section-heading { flex-direction: column; align-items: flex-start; gap: 24px; margin-bottom: 32px; }
  .product-layout, .app-section, .about-layout, .contact-section { grid-template-columns: 1fr; gap: 36px; }
  .product-copy h3 { font-size: 29px; }
  .product-frame { height: 340px; }
  .product-gallery { padding: 16px; }
  .gallery-controls button { flex: 1; padding-inline: 8px; }
  .flow { grid-template-columns: 1fr 1fr; gap: 32px 12px; padding: 32px 12px; }
  .flow-node { padding-inline: 4px; }
  .flow-node:nth-child(2)::after { content: "↓"; top: auto; right: calc(50% - 8px); bottom: -32px; }
  .flow-node:nth-child(3) { order: 4; }
  .flow-node:nth-child(3)::after { content: "←"; right: auto; left: -18px; }
  .flow-node:nth-child(4) { order: 3; }
  .flow-node h3 { font-size: 15px; }
  .flow-node p { font-size: 12px; }
  .capabilities { grid-template-columns: 1fr; gap: 8px; }
  .capability { padding-block: 22px 14px; }
  .app-stage { min-height: 540px; }
  .app-section .app-stage { order: 2; }
  .footer-main { flex-direction: column; gap: 32px; }
  .footer-links { gap: 72px; }
  .footer-bottom { flex-direction: column; gap: 8px; }
  .support-hero { padding-block: 40px; }
  .support-hero h1 { font-size: 36px; }
  .support-layout { grid-template-columns: 1fr; gap: 36px; }
  .support-aside { display: flex; gap: 24px; flex-wrap: wrap; }
  .support-aside a { font-size: 13px; }
  .download-card { padding: 22px; }
  .download-title h3 { font-size: 20px; }
  .download-actions { gap: 12px; }
  .download-actions .button { flex-basis: 100%; }
  .legal h1 { font-size: 28px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}
@media (forced-colors: active) {
  :root, body, * { scrollbar-color: auto; }
  .button, .flow-icon, .menu-button { border: 1px solid ButtonText; }
}