:root {
  --brand-blue: #1556d8;
  --brand-blue-deep: #0d3184;
  --brand-blue-soft: #eaf2ff;
  --logo-yellow: #f2cd4b;
  --ink: #101318;
  --muted: #667085;
  --line: #dfe5ee;
  --surface: #f7faff;
  --surface-warm: #f5f2e8;
  --white: #ffffff;
  --black: #111111;
  --charcoal: #202321;
  --paper: #f6f6f2;
  --green: #16b878;
  --green-soft: #b7e8d2;
  --content-max: 1200px;
  --page-pad: clamp(20px, 5vw, 72px);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-soft: 0 18px 50px rgba(16, 19, 24, 0.08);
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--surface); font-family: "Segoe UI", "Microsoft YaHei", sans-serif; font-size: 16px; line-height: 1.7; letter-spacing: 0; }
body.is-menu-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--logo-yellow); outline-offset: 4px; }

.container { width: min(var(--content-max), calc(100% - (var(--page-pad) * 2))); margin-inline: auto; }
.is-data-loading main, .is-data-loading footer { visibility: hidden; }
.site-data-error { position: fixed; z-index: 50; top: 50%; left: 50%; width: min(460px, calc(100% - 40px)); padding: 24px; border: 1px solid #d9a2a2; color: #8b2c2c; background: #fff5f5; box-shadow: var(--shadow-soft); transform: translate(-50%, -50%); }
.mobile-actions { display: none; }
.skip-link { position: fixed; z-index: 100; top: 12px; left: 16px; padding: 8px 12px; color: var(--white); background: var(--black); transform: translateY(-150%); transition: transform 180ms ease; }
.skip-link:focus { transform: translateY(0); }
.eyebrow { display: flex; align-items: center; gap: 10px; margin: 0 0 22px; color: var(--brand-blue); font-size: 11px; font-weight: 700; letter-spacing: 0.12em; line-height: 1.2; }
.eyebrow__line { width: 28px; height: 2px; background: currentColor; }
.section-heading { max-width: 640px; }
.section-heading h2 { margin: 0; font-size: clamp(38px, 5vw, 68px); font-weight: 700; letter-spacing: 0; line-height: 1.12; }
.section-heading h2 em { color: var(--brand-blue); font-style: normal; }
.section-heading > p:last-child { max-width: 560px; margin: 26px 0 0; color: var(--muted); }
.section-heading--light .eyebrow { color: var(--green-soft); }
.section-heading--light h2 { color: var(--white); }
.section-heading--light h2 em { color: var(--green); }
.section-heading--light > p:last-child { color: #c2c7c3; }

.site-header { position: sticky; z-index: 20; top: 0; border-bottom: 1px solid transparent; background: rgba(247, 250, 255, 0.88); backdrop-filter: blur(16px); transition: box-shadow 180ms ease, border-color 180ms ease; }
.site-header.is-scrolled { border-color: var(--line); box-shadow: 0 8px 30px rgba(16, 19, 24, 0.08); }
.header-inner { display: flex; min-height: 76px; align-items: center; justify-content: space-between; gap: 30px; }
.brand-lockup { display: inline-flex; width: 160px; height: 50px; align-items: center; overflow: hidden; flex-shrink: 0; }
.brand-lockup img { width: 100%; height: 100%; object-fit: contain; object-position: left center; mix-blend-mode: multiply; }
.site-nav { display: flex; align-items: center; gap: clamp(14px, 2vw, 28px); }
.site-nav__link { position: relative; padding: 8px 0; color: #4d5562; font-size: 14px; white-space: nowrap; }
.site-nav__link::after { position: absolute; right: 0; bottom: 0; left: 0; height: 2px; background: var(--brand-blue); content: ""; transform: scaleX(0); transform-origin: right; transition: transform 180ms ease; }
.site-nav__link:hover, .site-nav__link.is-active { color: var(--brand-blue); }
.site-nav__link:hover::after, .site-nav__link.is-active::after { transform: scaleX(1); transform-origin: left; }
.nav-cta, .button { display: inline-flex; align-items: center; justify-content: center; gap: 12px; border: 1px solid transparent; font-weight: 700; line-height: 1.2; transition: color 180ms ease, background-color 180ms ease, border-color 180ms ease, transform 180ms ease; }
.nav-cta { min-height: 42px; padding: 0 18px; color: var(--white); background: var(--brand-blue); border-radius: var(--radius-sm); font-size: 13px; }
.nav-cta:hover, .button:hover { transform: translateY(-2px); }
.menu-toggle { display: none; border: 0; color: var(--ink); background: transparent; cursor: pointer; }
.menu-toggle__label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.menu-toggle__bars { display: flex; width: 28px; flex-direction: column; gap: 5px; }
.menu-toggle__bars i { display: block; width: 100%; height: 2px; background: currentColor; transition: transform 180ms ease, opacity 180ms ease; }
.menu-toggle[aria-expanded="true"] .menu-toggle__bars i:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] .menu-toggle__bars i:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] .menu-toggle__bars i:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.hero { position: relative; min-height: 680px; padding: clamp(64px, 9vw, 112px) 0 84px; overflow: hidden; background: var(--surface); }
.hero::after { position: absolute; right: -160px; bottom: -240px; width: 480px; height: 480px; border: 1px solid rgba(21, 86, 216, 0.12); border-radius: 50%; content: ""; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 0.92fr) minmax(420px, 1.08fr); align-items: center; gap: clamp(40px, 7vw, 112px); }
.hero-copy { position: relative; z-index: 1; }
.hero-copy h1 { max-width: 600px; margin: 0; color: var(--ink); font-size: clamp(54px, 8vw, 104px); font-weight: 800; letter-spacing: 0; line-height: 0.98; }
.hero-lead { max-width: 530px; margin: 34px 0 0; color: #303945; font-size: clamp(20px, 2.3vw, 29px); line-height: 1.45; }
.hero-note { max-width: 480px; margin: 16px 0 0; color: var(--muted); font-size: 14px; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; margin-top: 34px; }
.button { min-height: 50px; padding: 0 22px; border-radius: var(--radius-sm); font-size: 14px; cursor: pointer; }
.button--primary { color: var(--white); background: var(--brand-blue); }
.button--primary:hover { background: var(--brand-blue-deep); }
.button--text { padding-inline: 0; color: var(--brand-blue); border-bottom-color: var(--brand-blue); border-radius: 0; }
.button--outline { color: var(--brand-blue); border-color: var(--brand-blue); background: transparent; }
.button--outline:hover { color: var(--white); background: var(--brand-blue); }
.hero-trust { display: flex; flex-wrap: wrap; gap: 28px; margin-top: 72px; padding-top: 20px; border-top: 1px solid var(--line); }
.hero-trust div { display: flex; align-items: center; gap: 10px; }
.hero-trust strong { color: var(--brand-blue); font-size: 12px; }
.hero-trust span { color: var(--muted); font-size: 12px; }
.hero-media { position: relative; margin: 0; padding: 14px 14px 0 0; }
.hero-media::before { position: absolute; top: 0; right: 0; width: 72%; height: 72%; border-top: 1px solid var(--brand-blue); border-right: 1px solid var(--brand-blue); content: ""; }
.hero-media img { position: relative; z-index: 1; width: 100%; min-height: 480px; object-fit: cover; object-position: center; filter: saturate(0.86); }
.hero-media figcaption { position: relative; z-index: 2; display: flex; justify-content: space-between; gap: 16px; margin: -44px 24px 0; padding: 14px 16px; color: var(--white); background: var(--brand-blue); font-size: 11px; letter-spacing: 0.08em; }
.hero-media__index { position: absolute; z-index: 2; right: -26px; top: 46%; color: var(--brand-blue); font-size: 14px; font-weight: 700; letter-spacing: 0.12em; writing-mode: vertical-rl; }
.hero-media__index span { margin: 8px 0; color: var(--muted); font-weight: 400; }
.hero-footline { display: flex; gap: 8px; width: min(var(--content-max), calc(100% - (var(--page-pad) * 2))); margin: 70px auto 0; }
.hero-footline span { display: block; width: 42px; height: 4px; background: var(--brand-blue); }
.hero-footline span:nth-child(2) { width: 18px; background: var(--logo-yellow); }
.hero-footline span:nth-child(3) { width: 8px; background: var(--ink); }

.dewu-section { padding: 120px 0 92px; color: var(--paper); background: var(--black); }
.dewu-section .container { position: relative; }
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin-top: 72px; border-top: 1px solid #414441; border-bottom: 1px solid #414441; }
.service-item { position: relative; min-height: 290px; padding: 28px 28px 40px 0; border-right: 1px solid #414441; }
.service-item:not(:first-child) { padding-left: 28px; }
.service-item:last-child { border-right: 0; }
.service-item__number { color: var(--green); font-size: 12px; letter-spacing: 0.12em; }
.service-item h3 { margin: 52px 0 14px; color: var(--white); font-size: 25px; }
.service-item p { max-width: 270px; margin: 0; color: #aeb5b0; font-size: 14px; }
.service-item__arrow { position: absolute; right: 28px; bottom: 32px; color: var(--green); font-size: 25px; }
.dewu-disclaimer { display: flex; align-items: flex-start; gap: 14px; max-width: 800px; margin-top: 52px; padding-top: 20px; border-top: 1px solid #414441; }
.dewu-disclaimer__mark { display: inline-grid; width: 22px; height: 22px; flex: 0 0 22px; place-items: center; color: var(--black); background: var(--green); font-weight: 800; }
.dewu-disclaimer p { margin: 0; color: #aeb5b0; font-size: 13px; }

.process-section { padding: 126px 0; background: var(--white); }
.process-list { margin: 76px 0 0; padding: 0; border-top: 1px solid var(--line); list-style: none; }
.process-step { display: grid; grid-template-columns: 100px 1fr 80px; align-items: center; gap: 26px; min-height: 118px; border-bottom: 1px solid var(--line); }
.process-step__number { color: var(--brand-blue); font-size: 13px; font-weight: 800; letter-spacing: 0.1em; }
.process-step h3 { margin: 0; font-size: 22px; }
.process-step p { margin: 3px 0 0; color: var(--muted); font-size: 14px; }
.process-step__status { color: #98a1ae; font-size: 10px; letter-spacing: 0.14em; text-align: right; }
.process-step:hover .process-step__status { color: var(--brand-blue); }

.cases-section { padding: 126px 0; background: var(--surface-warm); }
.cases-layout { display: grid; grid-template-columns: 0.9fr 1.1fr; align-items: start; gap: clamp(48px, 9vw, 140px); }
.cases-layout .button { margin-top: 34px; }
.case-board { position: relative; padding: 34px; color: var(--ink); background: var(--white); box-shadow: var(--shadow-soft); }
.case-board__label { margin-bottom: 34px; color: var(--muted); font-size: 10px; letter-spacing: 0.12em; }
.case-rule { display: grid; grid-template-columns: 45px 1fr; gap: 20px; padding: 22px 0; border-top: 1px solid var(--line); }
.case-rule > div { min-width: 0; }
.case-rule span { color: var(--brand-blue); font-size: 12px; font-weight: 800; }
.case-rule strong { font-size: 17px; }
.case-rule p { margin: 3px 0 0; color: var(--muted); font-size: 13px; }
.case-rule__media { width: 100%; max-height: 132px; margin-top: 14px; object-fit: cover; }
.case-rule__media[src=""] { display: none; }
.case-board__stamp { position: absolute; right: 28px; bottom: 24px; width: 58px; height: 58px; display: grid; place-items: center; border: 1px solid var(--brand-blue); color: var(--brand-blue); font-size: 9px; font-weight: 800; line-height: 1.2; text-align: center; transform: rotate(-8deg); }

.about-section { padding: 126px 0; background: var(--surface); }
.about-grid { display: grid; grid-template-columns: 1fr 0.92fr; align-items: center; gap: clamp(56px, 9vw, 140px); }
.about-media { position: relative; display: grid; grid-template-columns: 0.7fr 1.3fr; align-items: end; gap: 14px; padding-bottom: 28px; }
.about-media::before { position: absolute; top: -28px; left: -28px; width: 74%; height: 78%; border-top: 1px solid var(--logo-yellow); border-left: 1px solid var(--logo-yellow); content: ""; }
.about-media img { position: relative; z-index: 1; width: 100%; object-fit: cover; }
.about-media img:first-child { height: 180px; }
.about-media img:nth-child(2) { height: 420px; }
.about-media__caption { position: absolute; z-index: 2; right: 18px; bottom: 0; padding: 8px 12px; color: var(--white); background: var(--brand-blue); font-size: 10px; letter-spacing: 0.08em; }
.about-grid .section-heading > p:nth-of-type(2) { margin-top: 16px; }
.about-meta { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 38px; padding-top: 18px; border-top: 1px solid var(--line); color: var(--muted); font-size: 10px; letter-spacing: 0.14em; }

.faq-section { padding: 126px 0; background: var(--white); }
.faq-layout { display: grid; grid-template-columns: 0.8fr 1.2fr; align-items: start; gap: clamp(48px, 9vw, 140px); }
.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary { display: flex; min-height: 86px; align-items: center; justify-content: space-between; gap: 20px; padding: 22px 0; color: var(--ink); cursor: pointer; font-size: 18px; font-weight: 700; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary span { position: relative; width: 20px; height: 20px; flex: 0 0 20px; }
.faq-item summary span::before, .faq-item summary span::after { position: absolute; top: 9px; left: 2px; width: 16px; height: 1px; background: var(--brand-blue); content: ""; }
.faq-item summary span::after { transform: rotate(90deg); transition: transform 180ms ease; }
.faq-item[open] summary span::after { transform: rotate(0); }
.faq-item p { max-width: 700px; margin: -4px 34px 24px 0; color: var(--muted); font-size: 14px; }

.contact-section { padding: 120px 0; background: var(--black); }
.contact-grid { display: grid; grid-template-columns: 0.86fr 1.14fr; align-items: start; gap: clamp(48px, 8vw, 120px); }
.contact-note { display: flex; flex-direction: column; gap: 8px; margin-top: 58px; padding-top: 18px; border-top: 1px solid #414441; }
.contact-note span { color: var(--green); font-size: 10px; letter-spacing: 0.16em; }
.contact-note strong { color: var(--paper); font-size: 14px; font-weight: 500; }
.lead-form { padding: 34px; background: var(--paper); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px 18px; }
.field { display: flex; flex-direction: column; gap: 7px; color: var(--ink); font-size: 12px; font-weight: 700; }
.field b { color: var(--green); }
.field input, .field textarea { width: 100%; border: 1px solid #cfd5cf; border-radius: 0; color: var(--ink); background: var(--white); outline: 0; transition: border-color 180ms ease, box-shadow 180ms ease; }
.field input { height: 48px; padding: 0 13px; }
.field textarea { min-height: 110px; padding: 12px 13px; resize: vertical; }
.field input::placeholder, .field textarea::placeholder { color: #9ca39e; }
.field input:focus, .field textarea:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(22, 184, 120, 0.16); }
.field.has-error input, .field.has-error textarea { border-color: #c64444; }
.field--full { grid-column: 1 / -1; }
.consent { display: flex; align-items: flex-start; gap: 10px; margin-top: 22px; color: #667068; font-size: 12px; line-height: 1.5; }
.consent input { width: 16px; height: 16px; flex: 0 0 16px; margin: 1px 0 0; accent-color: var(--green); }
.consent.has-error { color: #a83232; }
.button--green { margin-top: 24px; color: var(--black); background: var(--green); }
.button--green:hover { background: #42d99d; }
.button:disabled { cursor: wait; opacity: 0.62; }
.form-message { min-height: 24px; margin: 14px 0 0; color: #657168; font-size: 12px; }
.form-message.is-success { color: #087249; }
.form-message.is-error { color: #a83232; }

.site-footer { padding: 66px 0 22px; color: #c1c7c2; background: #151716; }
.footer-grid { display: grid; grid-template-columns: 1.15fr 0.8fr 0.9fr; gap: 50px; padding-bottom: 52px; }
.brand-lockup--footer { width: 170px; background: transparent; }
.brand-lockup--footer img { mix-blend-mode: normal; }
.footer-summary { margin: 18px 0 0; color: #9ca39e; font-size: 13px; }
.footer-links { display: flex; flex-direction: column; align-items: flex-start; gap: 8px; font-size: 13px; }
.footer-links > span { margin-bottom: 10px; color: var(--green); font-size: 10px; letter-spacing: 0.14em; }
.footer-links a:hover { color: var(--white); }
.footer-links p { max-width: 260px; margin: 0; color: #9ca39e; font-size: 12px; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 18px; border-top: 1px solid #343936; color: #7f8782; font-size: 10px; letter-spacing: 0.1em; }

.error-page { min-height: 100vh; display: grid; place-items: center; padding: 30px; }
.error-main { width: min(680px, 100%); }
.error-main h1 { margin: 0; font-size: clamp(48px, 8vw, 96px); line-height: 1; }
.error-main > p:not(.eyebrow) { color: var(--muted); }

.reveal { opacity: 1; transform: none; }
.js-ready .reveal { opacity: 0; transform: translateY(18px); transition: opacity 520ms var(--ease), transform 520ms var(--ease); }
.js-ready .reveal.is-visible { opacity: 1; transform: none; }
.js-ready .reveal--delay { transition-delay: 90ms; }
.js-ready .reveal--delay-2 { transition-delay: 180ms; }

@media (max-width: 1023px) {
  :root { --page-pad: 32px; }
  .site-nav { gap: 16px; }
  .site-nav__link { font-size: 13px; }
  .hero-grid { grid-template-columns: 1fr 0.9fr; gap: 36px; }
  .hero-copy h1 { font-size: clamp(54px, 8vw, 82px); }
  .hero-media img { min-height: 420px; }
  .cases-layout, .about-grid, .faq-layout, .contact-grid { gap: 52px; }
}

@media (max-width: 767px) {
  :root { --page-pad: 20px; }
  body { font-size: 15px; }
  .site-header { background: rgba(247, 250, 255, 0.96); }
  .header-inner { min-height: 68px; }
  .brand-lockup { width: 142px; height: 44px; }
  .menu-toggle { display: block; }
  .site-nav { position: absolute; top: calc(100% + 1px); right: 0; left: 0; display: flex; visibility: hidden; padding: 22px var(--page-pad) 30px; flex-direction: column; align-items: stretch; gap: 0; border-bottom: 1px solid var(--line); background: var(--surface); opacity: 0; transform: translateY(-8px); transition: visibility 180ms ease, opacity 180ms ease, transform 180ms ease; }
  .site-nav.is-open { visibility: visible; opacity: 1; transform: none; }
  .site-nav__link { padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
  .site-nav__link::after { display: none; }
  .nav-cta { margin-top: 20px; }
  .hero { min-height: 0; padding: 60px 0 58px; }
  .hero::after { right: -260px; bottom: -260px; width: 420px; height: 420px; }
  .hero-grid, .cases-layout, .about-grid, .faq-layout, .contact-grid { display: block; }
  .hero-copy h1 { font-size: clamp(50px, 16vw, 78px); }
  .hero-lead { margin-top: 26px; font-size: 21px; }
  .hero-trust { gap: 14px 22px; margin-top: 50px; }
  .hero-media { margin-top: 48px; padding-right: 10px; }
  .hero-media img { min-height: 280px; height: 62vw; }
  .hero-media__index { right: -18px; }
  .hero-footline { margin-top: 44px; }
  .section-heading h2 { font-size: clamp(40px, 13vw, 58px); }
  .dewu-section, .process-section, .cases-section, .about-section, .faq-section, .contact-section { padding: 78px 0; }
  .service-grid { display: block; margin-top: 48px; }
  .service-item, .service-item:not(:first-child) { min-height: 0; padding: 24px 44px 34px 0; border-right: 0; border-bottom: 1px solid #414441; }
  .service-item:last-child { border-bottom: 0; }
  .service-item h3 { margin-top: 28px; }
  .service-item__arrow { right: 4px; bottom: 30px; }
  .dewu-disclaimer { margin-top: 36px; }
  .process-list { margin-top: 44px; }
  .process-step { grid-template-columns: 44px 1fr; gap: 12px; min-height: 120px; padding: 18px 0; }
  .process-step__status { grid-column: 2; grid-row: 2; text-align: left; }
  .process-step h3 { font-size: 18px; line-height: 1.35; }
  .process-step p { font-size: 13px; }
  .cases-layout .button { margin-top: 28px; }
  .case-board { margin-top: 48px; padding: 24px; }
  .case-rule { grid-template-columns: 34px 1fr; gap: 12px; }
  .about-media { margin: 54px 0 72px; padding-bottom: 24px; }
  .about-media img:first-child { height: 28vw; min-height: 110px; }
  .about-media img:nth-child(2) { height: 64vw; min-height: 240px; }
  .faq-list { margin-top: 48px; }
  .faq-item summary { min-height: 76px; font-size: 16px; }
  .faq-item p { margin-right: 0; font-size: 13px; }
  .contact-note { margin-top: 40px; }
  .lead-form { margin-top: 48px; padding: 22px 18px; }
  .form-grid { display: block; }
  .field { margin-bottom: 18px; }
  .field--full { margin-bottom: 0; }
  .lead-form .button { width: 100%; }
  .footer-grid { display: block; padding-bottom: 34px; }
  .footer-links { margin-top: 34px; }
  .footer-bottom { display: block; }
  .footer-bottom span { display: block; margin-top: 8px; }
  body.has-mobile-actions { padding-bottom: 78px; }
  .mobile-actions { position: fixed; z-index: 25; right: 0; bottom: 0; left: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; padding: 10px var(--page-pad) calc(10px + env(safe-area-inset-bottom)); border-top: 1px solid var(--line); background: var(--surface); box-shadow: 0 -8px 24px rgba(16, 19, 24, 0.08); }
  .mobile-actions__link { display: inline-flex; min-height: 44px; align-items: center; justify-content: center; border: 1px solid var(--brand-blue); color: var(--brand-blue); background: var(--surface); font-size: 13px; font-weight: 700; }
  .mobile-actions__link--primary { color: var(--white); background: var(--brand-blue); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
  .js-ready .reveal { opacity: 1; transform: none; }
}