:root {
  color-scheme: dark;
  --bg: #071421;
  --surface: #0d2032;
  --surface-light: #112b40;
  --text: #f1f6fb;
  --muted: #a8b9c9;
  --accent: #69e3ee;
  --line: #263b4e;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", sans-serif;
}
.hero-demo { align-self: center; min-width: 0; border: 1px solid #365265; border-radius: 8px; overflow: hidden; background: #102637; }
.browser-frame { min-width: 0; overflow: hidden; }
.browser-bar { display: flex; align-items: center; gap: 14px; min-height: 34px; padding: 7px 14px; color: #b4c6d3; font-size: 11px; background: #182e3e; }
.browser-dots { display: flex; gap: 5px; }
.browser-dots i { width: 6px; height: 6px; border-radius: 50%; background: #6b8999; }
.preview-image-link { display: block; background: #f5f2eb; }
.browser-image { width: 100%; height: auto; display: block; aspect-ratio: 2; object-fit: cover; object-position: top; }
.preview-image-link:focus-visible { outline-offset: -4px; }
.preview-caption { padding: 14px 20px 10px; }
.preview-caption p { color: #d6e4ee; font-size: 14px; }
.preview-caption a { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 44px; font-size: 14px; color: var(--accent); font-weight: 550; }
.preview-caption a:hover { color: #c4ffff; }
.studio-showcase { display: grid; grid-template-columns: 1.65fr 1fr; background: #0d2032; border: 1px solid #345164; border-radius: 8px; overflow: hidden; align-items: center; }
.showcase-image { min-width: 0; padding: 24px; background: #142c3e; }
.showcase-image .browser-frame { border: 1px solid #385466; border-radius: 5px; }
.showcase-copy { padding: 32px; }
.studio-disclosure { color: #b8dce5; display: inline-block; font-size: 12px; border: 1px solid #426372; border-radius: 3px; padding: 4px 9px; }
.showcase-copy h3 { margin-top: 20px; font-size: 26px; font-weight: 550; }
.showcase-copy p { margin-top: 14px; color: var(--muted); font-size: 16px; }
.showcase-copy .button { margin-top: 26px; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 28px; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.75 var(--font); -webkit-font-smoothing: antialiased; }
body::before { content: ""; position: absolute; z-index: -1; inset: 0 0 auto; height: 820px; pointer-events: none; background: radial-gradient(ellipse at 86% 25%, #16394a55, transparent 56%); }
::selection { background: var(--accent); color: var(--bg); }
a { color: inherit; text-decoration: none; }
a, summary { -webkit-tap-highlight-color: transparent; }
a:focus-visible, summary:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; border-radius: 4px; }
[tabindex="-1"]:focus { outline: none; }
button, a, summary { touch-action: manipulation; }
h1, h2, h3, h4, p { margin: 0; }
ul, ol { margin: 0; padding: 0; }
h1, h2, h3, h4 { line-height: 1.4; }
.container { width: min(1184px, calc(100% - 96px)); margin-inline: auto; }
.mono { font-family: "Consolas", "SFMono-Regular", monospace; }
.accent { color: var(--accent); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 10; top: 12px; left: 12px; padding: 10px 20px; color: var(--bg); background: var(--accent); transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }
.site-header { border-bottom: 1px solid var(--line); }
.header-inner { min-height: 92px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 650; font-size: 18px; white-space: nowrap; }
.brand-mark { display: inline-flex; align-items: baseline; font-family: Arial, sans-serif; font-weight: 800; letter-spacing: -3px; font-size: 30px; line-height: 1; padding-right: 4px; }
.brand-mark span { color: var(--accent); }
nav { display: flex; gap: 30px; font-size: 14px; }
nav a { padding: 12px 0; color: #c5d1dc; transition: color .18s ease; }
nav a:hover { color: var(--accent); }
.header-note { font-size: 13px; color: var(--muted); display: flex; align-items: center; gap: 10px; }
.status-dot { display: inline-block; width: 6px; height: 6px; flex: 0 0 6px; border-radius: 50%; background: var(--accent); }
.hero { display: grid; grid-template-columns: 1.55fr 1fr; gap: 44px 64px; padding-top: 78px; }
.eyebrow { display: flex; align-items: center; gap: 12px; color: var(--accent); font-size: 14px; letter-spacing: .1em; }
.short-line { width: 26px; height: 1px; background: var(--accent); }
h1 { margin-top: 26px; font-size: clamp(48px, 5.4vw, 72px); font-weight: 650; line-height: 1.19; letter-spacing: -.055em; }
h1 span { display: block; }
h1 .hero-lead { font-size: clamp(21px, 2.55vw, 32px); letter-spacing: -.035em; line-height: 1.6; margin-bottom: 14px; }
.hero-subtitle { margin-top: 28px; font-size: 18px; letter-spacing: .055em; }
.hero-description { margin-top: 6px; color: var(--muted); font-size: 15px; }
.hero-actions { display: flex; gap: 14px; margin-top: 30px; }
.button { min-height: 52px; padding: 12px 23px; display: inline-flex; align-items: center; justify-content: space-between; gap: 24px; border: 1px solid transparent; border-radius: 4px; font-size: 15px; font-weight: 600; transition: background .18s ease, transform .18s ease, border-color .18s ease; }
.button span { font-size: 21px; font-weight: 400; line-height: 1; }
.button-primary { background: var(--accent); color: #07232b; }
.button-primary:hover { background: #92eff6; transform: translateY(-2px); }
.button-secondary { border-color: #40556a; }
.button-secondary:hover { border-color: var(--accent); background: #102a3b; transform: translateY(-2px); }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; }
.tag { border: 1px solid #345063; padding: 3px 10px; color: #b6c9d6; border-radius: 3px; font-size: 13px; }
.hero-bottom { grid-column: 1 / -1; padding: 25px 0; border-bottom: 1px solid var(--line); display: flex; justify-content: space-between; color: var(--muted); font-size: 13px; }
.hero-bottom .mono { font-size: 11px; letter-spacing: .13em; }
.hero-bottom .mono span { margin-left: 24px; color: var(--accent); font-size: 18px; }
.section { padding-top: 82px; }
.section-heading { margin-bottom: 32px; }
.section-kicker { display: flex; gap: 13px; align-items: center; color: var(--accent); font-size: 14px; margin-bottom: 14px; }
.section-kicker > span { font: 12px "Consolas", monospace; border-right: 1px solid #3c5969; padding-right: 13px; }
.section-heading h2 { font-size: clamp(26px, 3vw, 36px); font-weight: 600; letter-spacing: -.035em; }
.section-heading > p { color: var(--muted); max-width: 650px; margin-top: 12px; }
summary { display: flex; align-items: center; justify-content: space-between; gap: 20px; cursor: pointer; list-style: none; }
summary::-webkit-details-marker { display: none; }
.plus { position: relative; width: 18px; height: 18px; flex: 0 0 18px; }
.plus::before, .plus::after { content: ""; position: absolute; top: 8px; left: 2px; width: 14px; height: 1px; background: currentColor; }
.plus::after { transform: rotate(90deg); transition: transform .18s ease; }
details[open] > summary .plus::after { transform: rotate(0deg); }
.scenario-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.scenario-card { border-top: 1px solid #385166; padding-top: 20px; }
.scenario-top { display: flex; align-items: center; justify-content: space-between; color: #8ea9bd; font-size: 12px; }
.scenario-icon { font-family: Arial, sans-serif; color: var(--accent); font-size: 27px; line-height: 1; }
.scenario-card h3 { font-size: 21px; font-weight: 550; margin-top: 26px; }
.scenario-card p { color: var(--muted); margin-top: 12px; font-size: 15px; }
.scenario-card .tag-row { margin-top: 23px; }
.scenario-card .tag { border-color: var(--line); }
.scenarios-section { padding-bottom: 84px; }
.pricing-section { padding-block: 76px 40px; border-block: 1px solid var(--line); background: #0a1a2a; }
.price-card { display: grid; grid-template-columns: .82fr 1.5fr; border: 1px solid #426374; border-radius: 8px; background: #0c2031; overflow: hidden; }
.price-overview { padding: 38px 42px; background: linear-gradient(130deg, #193e4e, #0f2939); display: flex; flex-direction: column; align-items: flex-start; border-right: 1px solid #375465; }
.price-badge { background: #1d4856; color: #a1f0f3; padding: 4px 11px; font-size: 13px; border: 1px solid #3e7380; border-radius: 3px; }
.price-overview h3 { font-size: 23px; font-weight: 550; margin-top: 23px; }
.price { display: flex; align-items: baseline; gap: 7px; line-height: 1.2; margin-top: 10px; }
.price > span { font-size: 30px; color: var(--accent); }
.price strong { font-family: Arial, sans-serif; font-size: 86px; font-weight: 500; letter-spacing: -.06em; }
.price-overview p { color: #acc6d3; font-size: 14px; margin-top: 12px; }
.price-overview .button { margin-top: auto; width: 100%; }
.price-scope { padding: 38px 42px; }
.price-scope h4 { font-size: 15px; font-weight: 600; }
.included-list { display: grid; grid-template-columns: 1.2fr 1fr; column-gap: 18px; row-gap: 14px; list-style: none; margin-top: 20px; font-size: 15px; }
.included-list li { display: flex; gap: 11px; align-items: baseline; }
.included-list li > span { color: var(--accent); }
.delivery { margin-top: 28px; border: 1px solid #2d4c60; border-radius: 4px; padding: 14px 17px; display: flex; gap: 13px; background: #112a3c; }
.clock-icon { color: var(--accent); font-size: 25px; line-height: 1.2; }
.delivery p { color: #bbccd8; font-size: 14px; }
.delivery strong { display: block; color: var(--text); font-weight: 500; margin-bottom: 3px; }
.exclusions { margin-top: 23px; font-size: 14px; color: var(--muted); }
.exclusions h4 { color: #d1dce4; font-size: 14px; margin-bottom: 6px; }
.hosting-note { color: #cfdee8; margin-top: 7px; }
.contact-status { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; margin-top: 20px; font-size: 13px; color: var(--muted); }
.contact-status > span { display: flex; align-items: center; gap: 9px; color: #c2d2dc; }
.contact-status .status-dot { background: #d7bd86; }
.process { list-style: none; display: grid; grid-template-columns: repeat(6, 1fr); border-block: 1px solid var(--line); padding-block: 26px; }
.process li { position: relative; display: flex; flex-direction: column; gap: 14px; padding: 0 20px; border-left: 1px solid var(--line); font-size: 14px; }
.process li:first-child { border-left: none; padding-left: 0; }
.step-number { color: var(--accent); font-size: 12px; }
.step-arrow { position: absolute; right: 18px; top: -4px; color: #7292a8; font-size: 20px; }
.faq { display: grid; grid-template-columns: .75fr 1.6fr; gap: 70px; padding-block: 62px 82px; scroll-margin-top: 30px; }
.faq-heading .mono { color: var(--accent); font-size: 14px; }
.faq-heading h3 { margin-top: 16px; font-size: 26px; font-weight: 550; max-width: 220px; line-height: 1.6; }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item:first-child { border-top: 1px solid var(--line); }
.faq-item summary { min-height: 70px; padding: 16px 2px; font-size: 16px; font-weight: 500; }
.faq-item summary:hover { color: var(--accent); }
.faq-item .plus { color: #9fb8c9; }
.faq-item p { padding: 0 30px 23px 2px; color: var(--muted); font-size: 15px; line-height: 1.9; }
.footer { border-top: 1px solid var(--line); padding-block: 32px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.footer-brand { display: inline-flex; padding-block: 8px; font-size: 16px; font-weight: 550; }
.footer p { color: var(--muted); font-size: 13px; margin-top: 2px; }
.footer-end { display: flex; align-items: center; gap: 30px; color: var(--muted); font-size: 12px; }
.footer-end a { display: flex; align-items: center; gap: 20px; padding-block: 12px; font-size: 13px; color: #cfdee8; }
.footer-end a:hover { color: var(--accent); }
.no-script { padding: 40px; }
@media (min-width: 1000px) and (prefers-reduced-motion: no-preference) {
  .hero-copy { animation: enter .55s ease-out both; }
  @keyframes enter { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
}
@media (max-width: 1050px) {
  .container { width: calc(100% - 64px); }
  .header-note { display: none; }
  .hero { column-gap: 32px; padding-top: 58px; }
  .hero-actions { gap: 10px; }
  .button { padding-inline: 17px; gap: 15px; }
  .price-overview, .price-scope { padding: 30px; }
  .included-list { grid-template-columns: 1fr; row-gap: 10px; }
  .price-overview .button { margin-top: 36px; }
  .process li { padding-inline: 12px; font-size: 13px; }
  .step-arrow { right: 10px; }
}
@media (max-width: 760px) {
  .container { width: calc(100% - 40px); }
  .header-inner { min-height: 74px; gap: 12px; flex-wrap: wrap; padding-block: 13px; }
  .brand { font-size: 16px; gap: 9px; }
  .brand-mark { font-size: 28px; }
  nav { gap: 18px; font-size: 13px; }
  nav a:last-child { display: none; }
  .hero { grid-template-columns: 1fr; padding-top: 40px; gap: 34px; }
  .eyebrow { font-size: 13px; }
  h1 { font-size: clamp(44px, 8.9vw, 64px); margin-top: 22px; line-height: 1.18; }
  h1 .hero-lead { font-size: clamp(20px, 4.5vw, 27px); margin-bottom: 12px; }
  .hero-subtitle { font-size: 16px; margin-top: 23px; letter-spacing: 0; }
  .hero-description { font-size: 14px; margin-top: 8px; }
  .hero-actions { margin-top: 25px; gap: 12px; }
  .hero-actions .button { min-height: 50px; font-size: 14px; gap: 18px; }
  .hero-bottom { padding-block: 18px; margin-top: -15px; font-size: 12px; }
  .hero-bottom .mono { display: none; }
  .section { padding-top: 55px; }
  .section-heading { margin-bottom: 25px; }
  .section-heading h2 { font-size: 27px; }
  .section-heading > p { font-size: 15px; line-height: 1.8; }
  .section-kicker { font-size: 13px; margin-bottom: 12px; }
  .scenario-grid { grid-template-columns: 1fr; gap: 29px; }
  .scenario-card { padding-top: 18px; }
  .scenario-card h3 { margin-top: 15px; font-size: 22px; }
  .scenario-card .tag-row { margin-top: 17px; }
  .scenario-card p { max-width: 510px; }
  .scenarios-section { padding-bottom: 55px; }
  .pricing-section { padding-block: 52px 30px; }
  .price-card { grid-template-columns: 1fr; }
  .price-overview { padding: 27px; border-right: 0; border-bottom: 1px solid #375465; }
  .price-overview h3 { margin-top: 18px; font-size: 23px; }
  .price strong { font-size: 78px; }
  .price-overview .button { margin-top: 23px; }
  .price-scope { padding: 27px; }
  .included-list { gap: 14px; }
  .contact-status { display: block; line-height: 1.8; }
  .contact-status p { margin-top: 7px; font-size: 12px; }
  .process { grid-template-columns: repeat(3, 1fr); gap: 26px 0; padding-block: 24px; }
  .process li { font-size: 13px; padding-inline: 14px; }
  .process li:nth-child(4) { padding-left: 0; border-left: none; }
  .process li:nth-child(3) .step-arrow { display: none; }
  .step-arrow { right: 12px; }
  .faq { grid-template-columns: 1fr; gap: 24px; padding-block: 42px 55px; }
  .faq-heading h3 { max-width: none; font-size: 23px; margin-top: 10px; }
  .faq-item summary { font-size: 15px; min-height: 68px; gap: 14px; }
  .faq-item p { font-size: 15px; padding-right: 8px; }
  .footer { flex-direction: column; align-items: flex-start; gap: 21px; padding-block: 25px; }
  .footer-end { width: 100%; justify-content: space-between; }
}
@media (max-width: 370px) {
  .container { width: calc(100% - 32px); }
  .header-inner { column-gap: 8px; }
  nav { gap: 12px; }
  nav a { font-size: 12px; }
  .brand { font-size: 14px; gap: 6px; }
  h1 .hero-lead { font-size: 19px; }
  .hero-actions { gap: 8px; }
  .hero-actions .button { padding-inline: 13px; gap: 10px; font-size: 13px; }
  .hero-subtitle { font-size: 15px; }
  .section-heading h2 { font-size: 24px; }
  .price-scope, .price-overview { padding: 23px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* 真实样式预览：单张截图，无 iframe 与嵌套滚动。 */
.hero { grid-template-columns: 1.1fr 1fr; column-gap: 48px; }
@media (max-width: 1050px) {
  .hero { column-gap: 30px; }
  .studio-showcase { grid-template-columns: 1.2fr 1fr; }
  .showcase-image { padding: 16px; }
  .showcase-copy { padding: 24px; }
  .showcase-copy h3 { font-size: 23px; }
}
@media (max-width: 800px) {
  .hero { grid-template-columns: 1fr; padding-top: 30px; gap: 26px; }
  .hero-demo { width: 100%; }
  .hero-demo .browser-image { height: 176px; aspect-ratio: auto; object-fit: cover; object-position: top; }
  .hero-demo .browser-bar { min-height: 28px; padding-block: 4px; }
  .hero-demo .preview-caption { padding: 8px 16px 4px; }
  .hero-demo .preview-caption p { font-size: 13px; }
  .hero-demo .preview-caption a { min-height: 44px; }
  .studio-showcase { grid-template-columns: 1fr; }
  .showcase-copy { padding: 25px; }
  .showcase-copy .button { width: 100%; }
  .showcase-image { padding: 16px; }
  .hero-actions .button { min-width: 136px; justify-content: space-between; }
}
@media (min-width: 651px) and (max-width: 800px) {
  .hero-demo .browser-image { height: auto; aspect-ratio: 2; }
}
@media (max-width: 420px) {
  .header-inner { min-height: 70px; }
  nav { gap: 14px; }
  nav a { font-size: 12px; }
  .hero h1 { margin-top: 16px; }
  .hero-subtitle { margin-top: 18px; }
  .hero-actions { margin-top: 22px; }
}