:root {
  --gold: #c39a5c;
  --gold-light: #d0aa70;
  --gold-deep: #a66f32;
  --brown: #b98b52;
  --brown-dark: #82460d;
  --blue: #064d85;
  --ink: #713b09;
  --paper: #fffdf8;
  --white: #ffffff;
  --shadow: 0 14px 32px rgba(97, 64, 25, .14);
  --radius: 10px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; color: var(--ink); background: var(--paper); font-family: "SourceHanSansCN-Heavy"; font-size: 16px; line-height: 1.6; }
body.menu-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
.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; }
.section-inner { width: min(1200px, calc(100% - 48px)); height: 100%; margin: 0 auto; position: relative; }
.section-dark { color: var(--white); }
.section-light { background: var(--paper); }

.site-header { position: absolute; z-index: 10; top: 0; left: 0; width: 100%; height: 70px; padding: 0 32px; display: flex; align-items: center; gap: 28px; color: rgba(255, 255, 255, .92); }
.brand-cluster { display: inline-flex; align-items: center; gap: 8px; flex: none; }
.brand { display: inline-flex; align-items: center; gap: 7px; flex: none; }
.brand-image { display: block; height: 35px; width: auto; object-fit: contain; }
.brand-image--system { width: 68px; }
.brand-image--datayi { width: 66px; }
.site-nav { display: flex; align-items: center; justify-content: center; gap: 30px; min-width: 0; flex: 1; font-size: 16px; white-space: nowrap; }
.site-nav a { opacity: .78; transition: opacity .2s ease, color .2s ease; }
.site-nav a:hover, .site-nav a.is-current { color: #fff; opacity: 1; }
.site-nav a.is-current { position: relative; }
.site-nav a.is-current::after { content: ""; position: absolute; left: 50%; bottom: -10px; width: 24px; height: 2px; background: #fff; transform: translateX(-50%); }
.header-actions { display: flex; align-items: center; gap: 12px; flex: none; }
.language-switch, .header-cta, .small-button { border: 0; border-radius: 999px; cursor: pointer; transition: transform .2s ease, background .2s ease, color .2s ease; }
.small-button { border-radius: 8px; }
.language-switch { position: relative; display: inline-flex; align-items: center; gap: 1px; width: 86px; height: 37px; padding: 3px; color: #fff; border: 1px solid rgba(255,255,255,.8); border-radius: 999px; background: rgba(91, 49, 13, .92); font-size: 12px; overflow: hidden; }
.language-switch::before { position: absolute; top: 3px; bottom: 3px; left: 3px; width: calc(50% - 2px); border-radius: 999px; background: #d18f49; content: ""; transition: transform .25s ease; }
.language-switch.is-english::before { transform: translateX(100%); }
.language-switch span { position: relative; z-index: 1; flex: 1; padding: 8px 6px; border-radius: 999px; line-height: 1; text-align: center; background: transparent !important; }
.language-switch span.is-active { color: #fff; }
.header-cta { display: inline-flex; width: 88px; height: 37px; align-items: center; justify-content: center; padding: 6px 12px; color: #fff; border-radius: 6px; background: #713a0a; font-size: 13px; font-weight: 700; }
.language-switch:hover, .header-cta:hover, .small-button:hover { transform: translateY(-2px); }
.menu-toggle { display: none; width: 40px; height: 40px; border: 0; background: transparent; color: #fff; cursor: pointer; }
.menu-toggle span { display: block; width: 22px; height: 2px; margin: 5px auto; background: currentColor; }

.hero { min-height: 960px; position: relative; overflow: hidden; background: #c39b61 url("大泰易网站_slices/bg.png") center top / cover no-repeat; }
.hero-media { position: absolute; z-index: 0; top: clamp(128px, 10.8vw, 215px); right: clamp(24px, 18vw, 360px); width: min(30.25vw, 552px); height: min(30.25vw, 552px); max-width: none; border-radius: 14px; object-fit: cover; object-position: 70% center; box-shadow: 0 18px 40px rgba(69, 36, 12, .18); }
.hero-inner { display: flex; align-items: flex-start; padding-top: 300px; }
.hero-copy { width: 570px; position: relative; z-index: 1; }
.eyebrow { margin: 0 0 12px; font-size: 12px; font-weight: 700; letter-spacing: 1px; }
.hero h1 { margin: 0; font-size: 64px; font-weight: 800; line-height: 1.08; letter-spacing: 0; }
.hero-description { max-width: 570px; margin: 24px 0 0; color: rgba(255,255,255,.88); font-size: 15px; line-height: 1.8; }
.hero-actions { display: flex; gap: 20px; margin-top: 42px; }
.pill-button { display: inline-flex; min-width: 148px; min-height: 42px; align-items: center; justify-content: center; padding: 8px 22px; border: 1px solid rgba(255, 255, 255, .7); border-radius: 999px; color: #fff; background: rgba(126, 75, 26, .32); font-size: 14px; transition: transform .2s ease, background .2s ease; }
.pill-button:hover { transform: translateY(-3px); background: rgba(126, 75, 26, .7); }
.hero-actions .pill-button { border-color: #996633; background: #996633; }
.hero-actions .pill-button:hover { background: #996633; }
.pill-button--solid { border-color: var(--gold-deep); background: var(--gold-deep); }
.pill-button--light { min-width: 120px; border: 0; color: #fff; background: #c49d5f; }
.hero-note { position: absolute; z-index: 2; top: 512px; left: 530px; width: 310px; min-height: 136px; padding: 40px 20px 20px; background: url("大泰易网站_slices/领航、科研、伙伴，共同.png") center / 100% 100% no-repeat; color: #fff; font-size: 24px; font-weight: 700; line-height: 1.3; }
.hero-note span { white-space: nowrap; }

.founders { min-height: 1078px; padding: 108px 0 47px; background: #fffdf8 url("大泰易网站_slices/优秀伙伴风采bg.png") center / cover no-repeat; }
.section-heading { text-align: center; }
.section-heading img { width: 160px; height: 50px; margin: 0 auto 10px; object-fit: contain; }
.section-heading h2 { margin: 0; color: var(--brown-dark); font-size: 60px; line-height: 1.2; }
.section-heading h2 span { font-weight: 800; }
.section-heading p { margin: 8px 0 0; color: #999999; font-size: 12px; letter-spacing: .8px; }
.founder-grid { display: flex; align-items: flex-start; justify-content: center; gap: 0; margin-top: 74px; }
.founder-card { width: 249px; min-height: 681px; padding: 15px 15px 16px; border-radius: 10px; background: #fff; box-shadow: var(--shadow); position: relative; transition: transform .3s ease, box-shadow .3s ease; }
.founder-card:hover { z-index: 2; transform: translateY(-10px); box-shadow: 0 20px 38px rgba(97, 64, 25, .22); }
.founder-card--offset { margin-top: 34px; }
.founder-photo { width: 218px; height: 360px; overflow: hidden; border-radius: 8px; background: #aeb6c5; }
.founder-photo img { width: 100%; height: 100%; object-fit: cover; object-position: center top; }
.founder-content { padding: 12px 6px 0; }
.founder-content h3 { margin: 0; color: var(--brown-dark); font-size: 34px; line-height: 1.2; text-align: center; }
.founder-content p { min-height: 84px; margin: 12px 0 0; color: #584d41; font-size: 16px; line-height: 1.6; }
.founder-content span { display: block; padding: 12px 8px; border: 1px solid #b9bdc2; border-radius: 8px; color: #756654; background: #e5e7e9; font-size: 16px; line-height: 1.55; }

.experts { min-height: 1328px; position: relative; overflow: hidden; background: #be9257 url("大泰易网站_slices/顶尖专家团队bg.png") center / cover no-repeat; }
.experts-wordmark { position: absolute; z-index: 0; left: 50%; bottom: -4px; width: min(90.57vw, 1739px); max-width: none; opacity: .6; transform: translateX(-50%); }
.experts-inner { z-index: 1; display: grid; grid-template-columns: 390px 750px; gap: 60px; align-items: start; padding-top: 180px; }
.experts-intro { position: relative; z-index: 2; }
.experts-intro h2 { margin: 0; font-size: 46px; line-height: 1.2; }
.experts-intro > p { max-width: 330px; margin: 20px 0 42px; color: rgba(255,255,255,.9); font-size: 14px; line-height: 1.8; }
.expert-links { display: grid; gap: 14px; }
.expert-links a { display: flex; align-items: center; justify-content: space-between; width: 390px; min-height: 60px; padding: 0 22px; border-radius: 10px; color: var(--brown-dark); background: #fff; font-size: 20px; font-weight: 700; transition: transform .2s ease, box-shadow .2s ease; }
.expert-links a:hover { transform: translateX(6px); box-shadow: 0 8px 18px rgba(85, 51, 17, .18); }
.expert-links span { color: #663300; font-size: 20px; font-weight: 400; }
.expert-list { display: grid; gap: 18px; }
.expert-card { min-height: 350px; display: grid; grid-template-columns: 400px 1fr; overflow: hidden; border-radius: 10px; color: var(--brown-dark); background: #fff; box-shadow: 0 12px 28px rgba(81, 49, 18, .14); transition: transform .3s ease, box-shadow .3s ease; }
.expert-card:hover { transform: translateY(-6px); box-shadow: 0 18px 34px rgba(81, 49, 18, .22); }
.expert-card img { width: 400px; height: 100%; object-fit: cover; object-position: center; transform: none; }
.expert-card > div { padding: 100px 28px 24px; }
.expert-card h3 { margin: 0 0 14px; font-size: 30px; line-height: 1.35; }
.expert-card p { margin: 0; color: #756654; font-size: 20px; line-height: 1.7; }

.partners { min-height: 1080px; padding: 112px 0 90px; background: #fff url("大泰易网站_slices/优秀伙伴风采bg.png") center / cover no-repeat; }
.partner-grid { display: grid; grid-template-columns: repeat(2, 590px); gap: 20px; justify-content: center; margin-top: 72px; }
.partner-card { min-height: 266px; display: grid; grid-template-columns: 303px 1fr; overflow: hidden; border: 1px solid #cfaa7c; border-radius: 10px; background: #c49b62; box-shadow: 0 8px 18px rgba(88, 55, 19, .08); transition: transform .3s ease, box-shadow .3s ease; }
.partner-card:hover { transform: translateY(-7px); box-shadow: 0 18px 28px rgba(88, 55, 19, .18); }
.partner-card img { width: 303px; height: 262px; object-fit: cover; object-position: center top; background: #aeb6c5; }
.partner-card > div { display: flex; flex-direction: column; padding: 54px 24px 43px; color: #fff; }
.partner-card h3 { margin: 0; font-size: 30px; line-height: 1.2; }
.partner-card small { display: block; margin-top: 5px; font-size: 20px; opacity: .9; }
.partner-card span { display: block; width: 100%; height: 1px; margin: 22px 0 14px; background: rgba(255,255,255,.65); }
.partner-card p { margin: auto 0 0; color: #7b4712; font-size: 22px; line-height: 1.6; }
.partner-more { display: flex; width: 260px; height: 60px; align-items: center; justify-content: center; margin: 50px auto 0; border-radius: 999px; color: #fff; background: var(--gold); font-size: 30px; transition: transform .2s ease, background .2s ease; }
.partner-more:hover { transform: translateY(-3px); background: var(--gold-deep); }

.consultation { min-height: 600px; background: #064d85 url("大泰易网站_slices/img_大泰易logo效果图.png") center / cover no-repeat; }
.consultation-inner { display: flex; align-items: center; min-height: 600px; }
.consultation h2 { margin: 0; color: #fff; font-size: 46px; line-height: 1.25; }
.consultation p { margin: 20px 0 30px; color: rgba(255,255,255,.88); font-size: 15px; line-height: 1.8; }

.contact { min-height: 840px; padding: 84px 0 24px; background: #fff; }
.contact-heading { display: flex; align-items: flex-end; justify-content: space-between; padding-bottom: 30px; border-bottom: 1px solid #ded7ca; }
.contact-heading h2 { margin: 0; color: var(--brown-dark); font-size: 38px; line-height: 1.25; }
.contact-heading p { margin: 14px 0 0; color: #8d816f; font-size: 13px; }
.contact-actions { display: flex; gap: 12px; }
.small-button { display: inline-flex; min-height: 34px; align-items: center; padding: 6px 16px; color: #fff; background: #77736f; font-size: 12px; }
.small-button--gold { background: var(--gold-deep); }
.contact-grid { display: grid; grid-template-columns: 500px 250px 390px; gap: 30px; align-items: start; margin-top: 36px; }
.contact-card { border-radius: 10px; }
.contact-card--brand, .qr-panel { min-height: 330px; padding: 32px; color: #fff; background: #c49d5f; }
.contact-card--brand, .qr-panel { align-self: stretch; }
.footer-logo { display: block; width: 120px; height: 150px; object-fit: cover; }
.contact-card--brand > p { position: relative; top: -5px; max-width: 330px; margin: 28px 0 18px; font-size: 12px; line-height: 1.7; }
.contact-form { display: grid; gap: 9px; }
.contact-form input { width: 100%; height: 34px; padding: 6px 12px; border: 0; border-radius: 8px; color: var(--ink); background: #fff; outline: 0; font-size: 12px; }
.contact-form input:focus { box-shadow: 0 0 0 3px rgba(255,255,255,.35); }
.contact-form button { height: 36px; border: 0; border-radius: 8px; color: var(--brown-dark); background: #fff; cursor: pointer; font-size: 12px; font-weight: 700; transition: transform .2s ease; }
.contact-form button:hover { transform: translateY(-2px); }
.quick-links { padding-top: 12px; }
.quick-links h3, .qr-panel h3 { margin: 0; color: var(--brown-dark); font-size: 15px; }
.quick-links > div { position: relative; top: -5px; display: grid; grid-template-columns: repeat(2, 1fr); grid-auto-flow: column; grid-template-rows: repeat(4, min-content); gap: 14px 30px; margin-top: 28px; color: #8c7e6c; font-size: 12px; }
.quick-links a:hover { color: var(--brown-dark); }
.qr-panel { padding: 32px 24px; }
.qr-panel p { margin: 6px 0 20px; color: #fff; font-size: 12px; }
.qr-pair { display: flex; gap: 16px; }
.qr-code { width: 142px; height: 142px; flex: none; object-fit: cover; }
.site-footer { display: flex; align-items: center; justify-content: space-between; margin-top: 48px; padding-top: 16px; border-top: 1px solid #ded7ca; color: #a49a8c; font-size: 10px; }
.toast { position: fixed; z-index: 20; right: 24px; bottom: 24px; padding: 12px 18px; border-radius: 8px; color: #fff; background: rgba(51, 40, 28, .92); box-shadow: 0 8px 24px rgba(0,0,0,.18); opacity: 0; pointer-events: none; transform: translateY(12px); transition: opacity .2s ease, transform .2s ease; font-size: 13px; }
.toast.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 1400px) and (min-width: 761px) {
  .site-nav { position: fixed; top: 70px; right: 0; left: 0; display: grid; max-height: 0; gap: 0; overflow: hidden; padding: 0 28px; background: rgba(89, 52, 20, .97); transition: max-height .25s ease, padding .25s ease; }
  .site-header.is-open .site-nav { max-height: 600px; padding: 14px 28px 20px; }
  .site-nav a { padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,.12); font-size: 14px; }
  .site-nav a.is-current::after { left: 0; bottom: 0; transform: none; }
  .menu-toggle { display: block; }
}

.reveal { opacity: 1; transform: translateY(0); }
.js-ready .reveal { opacity: 0; transform: translateY(24px); transition: opacity .65s ease, transform .65s ease; }
.js-ready .reveal.is-visible { opacity: 1; transform: translateY(0); }
.js-ready .founder-card.is-visible:hover { transform: translateY(-10px); }
.js-ready .expert-card.is-visible:hover, .js-ready .partner-card.is-visible:hover { transform: translateY(-6px); }
.js-ready .reveal-delay-1 { transition-delay: .08s; }
.js-ready .reveal-delay-2 { transition-delay: .16s; }
.js-ready .reveal-delay-3 { transition-delay: .24s; }
.js-ready .reveal-delay-4 { transition-delay: .32s; }

html[lang="en"] .hero h1 { font-size: 42px; line-height: 1.4; }
html[lang="en"] .hero-description { font-size: 14px; }
html[lang="en"] .hero-note { font-size: 20px; }
html[lang="en"] .founder-content h3 { font-size: 28px; }
html[lang="en"] .founder-content p, html[lang="en"] .founder-content span { font-size: 14px; }
html[lang="en"] .experts-intro h2 { font-size: 42px; }
html[lang="en"] .expert-links a { font-size: 16px; }
html[lang="en"] .expert-links span { font-size: 14px; }
html[lang="en"] .expert-card h3 { font-size: 26px; }
html[lang="en"] .expert-card p { font-size: 16px; }
html[lang="en"] .partner-card h3 { font-size: 26px; }
html[lang="en"] .partner-card small { font-size: 16px; }
html[lang="en"] .partner-card p { font-size: 18px; }
html[lang="en"] .partner-more { font-size: 24px; }
html[lang="en"] .consultation h2 { font-size: 42px; }
html[lang="en"] .contact-heading h2 { font-size: 38px; }
html[lang="en"] .contact-card--brand > p, html[lang="en"] .qr-panel p { font-size: 11px; }
html[lang="en"] .quick-links > div { font-size: 11px; }

@media (max-width: 1500px) {
  .site-header { padding: 0 12px; gap: 30px; }
  .site-nav { justify-content: flex-start; gap: 20px; font-size: 16px; }
  .section-inner { width: min(1200px, calc(100% - 48px)); }
}

@media (max-width: 1250px) {
  .site-nav { gap: 16px; font-size: 14px; }
  .founder-grid { flex-wrap: wrap; max-width: 800px; margin-right: auto; margin-left: auto; gap: 20px; }
  .founder-card--offset { margin-top: 0; }
  .experts-inner { grid-template-columns: 320px minmax(0, 1fr); gap: 32px; }
  .expert-links a { width: 100%; }
  .expert-card { grid-template-columns: 42% 58%; }
  .expert-card img { width: 100%; }
  .contact-grid { grid-template-columns: 1fr 220px 1fr; gap: 20px; }
  .qr-pair { gap: 8px; }
  .qr-code { width: 112px; height: 112px; }
}

@media (max-width: 1200px) {
  .site-header { gap: 18px; }
  .site-nav { gap: 18px; font-size: 13px; }
  .hero-description { max-width: 540px; font-size: 13px; }
  .experts-intro h2 { font-size: 38px; }
  .partner-grid { grid-template-columns: minmax(0, 590px); }
  html[lang="en"] .partner-card { min-height: 278.75px; }
  html[lang="en"] .contact-card--brand { min-height: 466px; }
}

@media (max-width: 1100px) {
  .site-header { height: 70px; }
  .site-nav { gap: 12px; font-size: 11px; }
  .header-cta { display: none; }
  .hero-inner { padding-top: 250px; }
  .hero h1 { font-size: 54px; }
  .hero-media { width: 70vw; height: 70vw; opacity: .78; }
  .hero-note { left: 420px; top: 500px; }
}

@media (max-width: 950px) {
  .site-nav { gap: 6px; font-size: 10px; }
}

@media (max-width: 760px) {
  .section-inner { width: min(100% - 32px, 520px); }
  .site-header { position: fixed; width: calc(100% - 32px); height: 64px; color: #fff; }
  .site-header.is-scrolled { background: rgba(112, 66, 24, .94); border-radius: 0 0 10px 10px; box-shadow: 0 8px 20px rgba(57, 34, 13, .16); }
  .site-nav { position: fixed; top: 64px; right: 0; left: 0; display: grid; gap: 0; padding: 14px 22px 20px; border-radius: 0 0 10px 10px; background: rgba(89, 52, 20, .97); opacity: 0; pointer-events: none; transform: translateY(-10px); transition: opacity .2s ease, transform .2s ease; }
  .site-nav a { padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,.12); font-size: 14px; }
  .site-nav a.is-current::after { left: 0; bottom: 0; transform: none; }
  .site-header.is-open .site-nav { opacity: 1; pointer-events: auto; transform: translateY(0); }
  .language-switch { display: none; }
  .brand--system { display: none; }
  .menu-toggle { display: block; }
  .hero { min-height: 780px; }
  .hero-media { top: 130px; right: -38%; width: 128%; height: 128%; max-height: none; opacity: .65; }
  .hero-inner { padding-top: 190px; }
  .hero-copy { width: 100%; }
  .hero h1 { font-size: 42px; }
  .hero-description { max-width: 330px; font-size: 13px; }
  .hero-actions { gap: 10px; margin-top: 28px; }
  .pill-button { min-width: 132px; min-height: 38px; padding: 6px 14px; font-size: 12px; }
  .hero-note { top: 560px; left: calc(50% - 120px); width: 240px; min-height: 105px; padding: 28px 23px 14px; font-size: 12px; }
  .founders, .partners { min-height: auto; padding: 72px 0 80px; }
  .section-heading img { width: 128px; height: 40px; }
  .section-heading h2 { font-size: 30px; }
  .section-heading p { font-size: 10px; }
  .founder-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin-top: 46px; }
  .founder-card { width: auto; min-height: 0; padding: 8px; }
  .founder-photo { width: 100%; height: 230px; }
  .founder-content { padding: 10px 3px 4px; }
  .founder-content h3 { font-size: 17px; }
  .founder-content p { min-height: 116px; margin-top: 8px; font-size: 11px; }
  .founder-content span { font-size: 10px; }
  .founder-card:last-child { grid-column: 1 / -1; width: calc(50% - 7px); justify-self: center; }
  .experts { min-height: auto; padding: 74px 0 88px; }
  .experts-wordmark { width: 160%; bottom: 12px; }
  .experts-inner { display: block; padding-top: 0; }
  .experts-intro h2 { font-size: 34px; }
  .experts-intro > p { margin: 16px 0 28px; font-size: 13px; }
  .expert-links { gap: 10px; }
  .expert-links a { width: 100%; min-height: 48px; padding: 0 16px; font-size: 12px; }
  .expert-links span { font-size: 10px; }
  .expert-list { gap: 14px; margin-top: 32px; }
  .expert-card { grid-template-columns: 42% 58%; min-height: 180px; }
  .expert-card img { height: 180px; }
  .expert-card > div { padding: 30px 14px 18px; }
  .expert-card h3 { font-size: 16px; }
  .expert-card p { font-size: 10px; }
  .partner-grid { grid-template-columns: 1fr; gap: 14px; margin-top: 42px; }
  .partner-card { min-height: 190px; grid-template-columns: 43% 57%; }
  .partner-card img { width: 100%; height: 188px; }
  .partner-card > div { padding: 34px 16px 14px; }
  .partner-card h3 { font-size: 17px; }
  .partner-card small { font-size: 10px; }
  .partner-card span { margin: 14px 0 10px; }
  .partner-card p { font-size: 10px; }
  .partner-more { width: 130px; height: 30px; margin-top: 36px; font-size: 13px; }
  .consultation { min-height: 500px; background-position: 62% center; }
  .consultation-inner { align-items: flex-start; min-height: 500px; padding-top: 100px; }
  .consultation h2 { font-size: 32px; }
  .consultation p { font-size: 12px; }
  .contact { min-height: auto; padding: 64px 0 20px; }
  .contact-heading { display: block; }
  .contact-heading h2 { font-size: 28px; }
  .contact-heading p { font-size: 12px; }
  .contact-actions { margin-top: 22px; }
  .contact-grid { grid-template-columns: 1fr; gap: 24px; margin-top: 28px; }
  .contact-card--brand, .qr-panel { min-height: auto; padding: 26px; }
  .quick-links { padding: 0 8px; }
  .quick-links > div { margin-top: 18px; gap: 10px 24px; }
  .qr-pair { gap: 18px; }
  .qr-code { width: 132px; height: 132px; }
  .site-footer { display: grid; gap: 6px; margin-top: 32px; font-size: 9px; }
}