:root { color-scheme: light; font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif; color: #252420; background: #faf9f6; font-synthesis: none; -webkit-font-smoothing: antialiased; --orange: #fa7c1f; --ink: #252420; --muted: #746f68; --line: #e5e1da; --page-width: 1200px; --page-gutter: 48px; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 110px; }
body { margin: 0; }
a { color: inherit; text-decoration: none; touch-action: manipulation; transition: color .2s, background .2s, transform .2s; }
a, summary { -webkit-tap-highlight-color: transparent; }
a:focus-visible, summary:focus-visible { outline: 3px solid #cd6419; outline-offset: 5px; border-radius: 4px; }
h1, h2, h3, p, figure, blockquote { margin: 0; }
h1, h2, h3 { font-weight: 650; }
img { display: block; max-width: 100%; height: auto; }
::selection { background: #ffdcc0; color: #48250b; }
.container, .workflow, .about, .closing { width: min(var(--page-width), calc(100% - 2 * var(--page-gutter))); margin-inline: auto; }
.skip-link { position: fixed; left: 24px; top: -80px; z-index: 20; padding: 14px; background: white; }
.skip-link:focus { top: 12px; }
.header { position: sticky; top: 0; z-index: 10; border-bottom: 1px solid var(--line); background: #faf9f6f5; }
.header-inner { min-height: 88px; display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.brand { flex-shrink: 0; }
.brand img { width: 166px; height: auto; }
.nav { display: flex; align-items: center; gap: 29px; font-size: 13px; }
.nav .section-link { color: #68645e; }
.nav .section-link:hover { color: #a74608; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 50px; padding: 14px 26px; border: 1px solid transparent; border-radius: 6px; font-size: 14px; font-weight: 550; white-space: nowrap; }
.button:hover { transform: translateY(-2px); }
.button-dark { background: var(--ink); color: white; }
.button-dark:hover { background: #44403a; }
.button-orange { background: var(--orange); color: #281706; }
.button-orange:hover { background: #ff963f; }
.nav-entry { min-height: 43px; padding: 11px 18px; font-size: 12px; }
.eyebrow { color: #a54e10; font-size: 10px; font-weight: 600; line-height: 1.5; letter-spacing: .16em; }
.hero { display: grid; grid-template-columns: 1fr 1.12fr; align-items: center; gap: 60px; min-height: 650px; padding-block: 64px 68px; }
h1 { margin-block: 23px; font-size: clamp(44px, 4.45vw, 66px); line-height: 1.27; letter-spacing: -.045em; }
h1 span { color: #c8560c; }
.hero-description { color: var(--muted); font-size: 14px; line-height: 2; }
.hero-actions { display: flex; align-items: center; gap: 25px; flex-wrap: wrap; margin-top: 29px; }
.quiet-link { padding-block: 7px; color: #51473d; font-size: 13px; border-bottom: 1px solid #bbb0a2; }
.quiet-link:hover { color: #ad4b0b; border-bottom-color: currentColor; }
.hero-note { margin-top: 27px; color: #837a70; font-size: 10px; letter-spacing: .1em; }
.hero-note span { padding-inline: 11px; color: #bfb6aa; }
.hero-visual { border: 1px solid #e5ddd2; border-radius: 9px; overflow: hidden; background: #f1ece3; }
.image-label { display: flex; justify-content: space-between; gap: 10px; padding: 14px 18px; color: #847a6c; font-size: 9px; letter-spacing: .09em; }
.hero-image { width: 100%; aspect-ratio: 1.32; object-fit: cover; object-position: center; }
.hero-visual figcaption { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 19px 21px; color: #6e6254; font-size: 12px; line-height: 1.8; }
.hero-visual figcaption strong { color: #2f2a24; font-size: 17px; font-weight: 550; }
.concept-label { flex-shrink: 0; font-size: 9px; color: #847a6c; text-align: right; }
.intro-strip { display: grid; grid-template-columns: repeat(3, 1fr); border-block: 1px solid var(--line); padding-block: 25px; color: #777066; font-size: 12px; }
.intro-strip span { display: flex; justify-content: center; gap: 28px; border-left: 1px solid var(--line); }
.intro-strip span:first-child { border-left: 0; }
.intro-strip b { color: #b37345; font-size: 10px; font-weight: 500; }
.section { padding-block: 104px; }
.section-heading { display: flex; justify-content: space-between; align-items: flex-end; gap: 35px; margin-bottom: 46px; }
h2 { margin-top: 18px; font-size: clamp(29px, 3vw, 42px); line-height: 1.4; letter-spacing: -.035em; }
.section-heading > p { padding-bottom: 5px; max-width: 360px; font-size: 13px; line-height: 1.95; color: var(--muted); }
.scenario-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.scenario-card { display: flex; flex-direction: column; padding: 29px; background: #f0ece4; border: 1px solid #e8e1d6; border-radius: 8px; }
.scenario-card:nth-child(2) { background: #f2eeea; }
.scenario-card:nth-child(3) { background: #eaece7; border-color: #dfe2d9; }
.card-top { display: flex; justify-content: space-between; gap: 10px; color: #8b7968; font-size: 10px; letter-spacing: .12em; }
.scenario-card h3 { margin-block: 40px 14px; font-size: 22px; line-height: 1.5; letter-spacing: -.025em; }
.scenario-card > p { min-height: 68px; color: #777066; font-size: 12px; line-height: 1.9; }
.prompt-example { flex: 1; margin-top: 30px; padding-top: 20px; border-top: 1px solid #d9d2c7; }
.prompt-example > span { color: #928575; font-size: 10px; }
.prompt-example blockquote { margin-top: 10px; font-size: 13px; line-height: 2; color: #514b43; }
.card-bottom { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; margin-top: 31px; font-size: 10px; color: #85796b; }
.card-bottom a { flex-shrink: 0; font-size: 12px; color: #8b410e; padding-block: 8px; border-bottom: 1px solid #c8a589; }
.card-bottom a:hover { color: #bf550a; }
.section-note { margin-top: 20px; color: #857e74; font-size: 11px; line-height: 1.8; }
.workflow, .about, .closing { border-radius: 18px; }
.workflow > .container, .about > .container, .closing > .container { width: calc(100% - 64px); }
.workflow { background: #faf9f6; color: var(--ink); }
.workflow .eyebrow { color: var(--muted); }
.workflow .section-heading > p { color: var(--muted); }
.workflow-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; list-style: none; margin: 55px 0 0; padding: 0; }
.workflow-grid li { border-top: 1px solid var(--line); padding-top: 24px; }
.step-number { color: var(--muted); font-size: 13px; letter-spacing: .1em; }
.workflow-grid h3 { margin-top: 26px; font-size: 18px; font-weight: 550; }
.workflow-grid p { margin-top: 15px; color: var(--muted); font-size: 12px; line-height: 2; }
.step-tag { display: block; margin-top: 27px; color: var(--muted); font-size: 10px; }
.workflow-bottom { margin-top: 60px; padding-top: 30px; border-top: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.workflow-bottom p { font-size: 13px; line-height: 1.9; color: var(--muted); }
.platform-grid { display: grid; grid-template-columns: 1.08fr 1fr; gap: 22px; }
.platform-feature { padding: 36px; border: 1px solid var(--line); background: #fdfcf9; border-radius: 8px; }
.feature-video { grid-row: span 2; background: #f1e9dd; display: flex; align-items: flex-start; flex-direction: column; }
.feature-label { color: #9a673e; font-size: 11px; }
.platform-feature h3 { margin-top: 24px; font-size: 24px; line-height: 1.4; }
.platform-feature p { max-width: 450px; margin-top: 18px; font-size: 13px; line-height: 1.9; color: var(--muted); }
.platform-feature .feature-detail { padding-top: 14px; font-size: 11px; color: #847b6e; }
.feature-video h3 { font-size: 32px; margin-top: 30px; }
.feature-video ul { padding: 0; margin: 42px 0 35px; list-style: none; width: 100%; }
.feature-video li { padding-block: 15px; border-top: 1px solid #dbd0c0; color: #635340; font-size: 13px; }
.feature-video .quiet-link { margin-top: auto; }
.feature-credits { grid-column: 1 / -1; display: grid; grid-template-columns: 1fr 1fr; column-gap: 55px; background: #f0f0e9; }
.feature-credits .feature-label { grid-column: 1; }
.feature-credits h3 { grid-column: 1; margin-top: 12px; }
.feature-credits > p { grid-column: 2; grid-row: 1 / 3; margin-top: 0; }
.feature-credits .feature-detail { grid-row: 3; }
.about { background: #f0eee7; }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 85px; }
.about-copy { padding-top: 8px; }
.about-copy p { margin-bottom: 20px; font-size: 13px; line-height: 2; color: #777067; }
.about-copy .about-lead { color: #3d3831; font-size: 19px; line-height: 1.8; }
.faq-layout { display: grid; grid-template-columns: .95fr 1.2fr; gap: 80px; }
.faq-intro { margin-top: 23px; color: var(--muted); font-size: 12px; line-height: 1.9; }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list details:first-child { border-top: 1px solid var(--line); }
.faq-list summary { padding: 24px 6px; cursor: pointer; font-size: 14px; line-height: 1.7; }
.faq-list summary::marker { color: #a26a40; font-size: 12px; }
.faq-list details[open] summary { color: #99501d; }
.faq-list p { margin: 0 8px 24px 20px; color: var(--muted); font-size: 13px; line-height: 1.95; }
.closing { padding-block: 70px; background: #272723; }
.closing-inner { display: flex; justify-content: space-between; gap: 40px; align-items: center; }
.closing .eyebrow { color: #ffac6d; }
.closing h2 { font-size: 38px; color: #f7f5ee; }
.footer { background: #faf9f6; padding-block: 43px 25px; }
.footer-top { display: flex; align-items: center; gap: 32px; padding-bottom: 33px; }
.footer-top p { color: #92897c; font-size: 12px; }
.footer-top nav { display: flex; gap: 28px; margin-left: auto; color: #736c62; font-size: 12px; }
.footer a:hover { color: #a5490a; }
.footer-bottom { border-top: 1px solid var(--line); display: flex; gap: 20px; flex-wrap: wrap; padding-top: 22px; font-size: 11px; line-height: 1.8; color: #81786b; }
.footer-bottom a { margin-left: auto; }
@media (max-width: 1050px) {
  :root { --page-gutter: 32px; }
  .workflow > .container, .about > .container, .closing > .container { width: calc(100% - 48px); }
  .nav { gap: 19px; }
  .hero { gap: 36px; min-height: 610px; }
  h1 { font-size: 48px; }
  .hero-description { font-size: 13px; }
  .desktop-break { display: none; }
  .scenario-card { padding: 22px; }
  .scenario-card h3 { font-size: 19px; }
  .card-bottom { flex-wrap: wrap; gap: 3px; }
  .workflow-grid { gap: 22px; }
  .about-grid, .faq-layout { gap: 45px; }
}
@media (max-width: 760px) {
  html { scroll-padding-top: 94px; }
  :root { --page-gutter: 20px; }
  .workflow, .about, .closing { border-radius: 14px; }
  .workflow > .container, .about > .container, .closing > .container { width: calc(100% - 40px); }
  .header-inner { min-height: 76px; gap: 15px; }
  .brand img { width: 142px; }
  .nav .section-link { display: none; }
  .nav-entry { min-height: 42px; padding: 10px 14px; font-size: 12px; }
  .hero { grid-template-columns: 1fr; gap: 40px; padding-block: 53px 35px; }
  .hero-copy { text-align: left; }
  h1 { font-size: clamp(40px, 8vw, 58px); margin-block: 22px; }
  .hero-description { max-width: 430px; line-height: 1.95; }
  .hero-note { margin-top: 23px; }
  .hero-image { aspect-ratio: 1.55; }
  .hero-visual figcaption { padding: 16px; }
  .hero-visual figcaption strong { font-size: 15px; }
  .image-label { padding: 12px 14px; font-size: 8px; }
  .intro-strip { padding-block: 19px; font-size: 10px; }
  .intro-strip span { flex-direction: column; align-items: center; gap: 8px; }
  .intro-strip b { font-size: 9px; }
  .section { padding-block: 65px; }
  .section-heading { flex-direction: column; align-items: flex-start; gap: 20px; margin-bottom: 30px; }
  h2 { font-size: 29px; margin-top: 15px; }
  .section-heading > p { font-size: 12px; }
  .scenario-grid { grid-template-columns: 1fr; gap: 16px; }
  .scenario-card { padding: 27px; }
  .scenario-card h3 { margin-top: 27px; font-size: 23px; }
  .scenario-card > p { min-height: 0; }
  .prompt-example { margin-top: 23px; }
  .card-bottom { flex-wrap: nowrap; margin-top: 20px; gap: 12px; }
  .workflow-grid { grid-template-columns: 1fr 1fr; gap: 32px 24px; margin-top: 35px; }
  .workflow-grid h3 { font-size: 16px; margin-top: 20px; }
  .workflow-grid p { font-size: 12px; }
  .step-tag { font-size: 9px; }
  .workflow-bottom { margin-top: 36px; flex-direction: column; align-items: flex-start; gap: 22px; }
  .platform-grid, .about-grid, .faq-layout { grid-template-columns: 1fr; gap: 20px; }
  .platform-feature { padding: 28px; }
  .feature-video h3 { font-size: 28px; }
  .platform-feature h3 { margin-top: 19px; }
  .feature-video ul { margin-block: 27px; }
  .feature-credits { display: block; }
  .feature-credits > p { margin-top: 18px; }
  .about-grid { gap: 38px; }
  .about-copy .about-lead { font-size: 17px; }
  .faq-layout { gap: 30px; }
  .faq-list summary { font-size: 13px; padding-block: 22px; }
  .closing { padding-block: 51px; }
  .closing-inner { flex-direction: column; align-items: flex-start; gap: 28px; }
  .closing h2 { font-size: 30px; }
  .footer-top { flex-wrap: wrap; gap: 20px; padding-bottom: 26px; }
  .footer-top nav { width: 100%; margin-left: 0; gap: 26px; }
  .footer-bottom { gap: 9px 15px; }
  .footer-bottom a { margin-left: 0; flex-basis: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  a { transition: none; }
  .button:hover { transform: none; }
}