/* 国粤柏盛：原生多页站点，共享设计与响应式布局。 */
:root {
  --navy: #0b203d;
  --navy-deep: #08192e;
  --blue: #1263e8;
  --blue-dark: #074dbf;
  --cyan: #59d6ee;
  --ink: #152841;
  --muted: #69788b;
  --line: #e1e7ef;
  --paper: #f3f6fb;
  --white: #fff;
  --content: 1200px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 110px; }
body { margin: 0; background: var(--white); color: var(--ink); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif; font-size: 17px; line-height: 1.75; -webkit-font-smoothing: antialiased; }
body.dialog-open { overflow: hidden; }
body, h1, h2, h3, p, figure { margin: 0; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { color: inherit; cursor: pointer; }
button, a, input { -webkit-tap-highlight-color: transparent; }
button { border: 0; }
img { display: block; max-width: 100%; height: auto; }
button:focus-visible, a:focus-visible, input:focus-visible { outline: 3px solid #2c9bec; outline-offset: 5px; }
::selection { background: #b8d9ff; color: var(--navy); }
[hidden] { display: none !important; }
.container { width: min(var(--content), calc(100% - 96px)); margin-inline: auto; }
.section { padding: 100px 0; }
.section-muted { background: var(--paper); }
.skip-link { position: fixed; top: -80px; left: 20px; z-index: 1000; background: white; padding: 12px 24px; color: var(--blue); }
.skip-link:focus { top: 12px; }
.eyebrow { color: var(--blue); font-size: 13px; font-weight: 650; line-height: 1.6; letter-spacing: 2px; margin-bottom: 18px; }
.section-heading { display: flex; justify-content: space-between; align-items: flex-end; gap: 32px; margin-bottom: 44px; }
.section-title { font-size: calc(clamp(28px, 3.2vw, 40px) + 2px); line-height: 1.5; letter-spacing: -1px; font-weight: 650; }
.section-description { color: var(--muted); font-size: 18px; line-height: 1.95; }
.section-heading > .section-description { max-width: 420px; padding-bottom: 4px; }
.button { display: inline-flex; justify-content: center; align-items: center; gap: 28px; min-height: 52px; padding: 13px 25px; border: 1px solid transparent; border-radius: 4px; font-size: 16px; line-height: 1.5; font-weight: 550; transition: background .2s, color .2s, transform .2s; }
.button span { font-size: 22px; line-height: 1; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: white; background: var(--blue); }
.button-primary:hover { background: var(--blue-dark); }
.button-outline { border-color: #bccbdc; background: transparent; color: var(--ink); }
.button-outline:hover { background: #e9f0f9; border-color: var(--blue); }
.button-ghost { border-color: #55657b; color: white; background: transparent; }
.button-ghost:hover { background: #ffffff12; border-color: #b9d0e7; }
.text-link { display: inline-flex; align-items: center; gap: 24px; font-size: 16px; color: var(--blue); font-weight: 550; }
.text-link span { font-size: 22px; transition: transform .2s; }
.text-link:hover span { transform: translate(3px, -3px); }

/* Shared navigation */
[data-site-header] { position: sticky; top: 0; z-index: 50; }
.site-header { background: #fffffff7; border-bottom: 1px solid #e6ebf1; backdrop-filter: blur(16px); }
.header-inner { height: 88px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-mark { width: 76px; height: 48px; overflow: hidden; display: block; position: relative; background: #fff; }
.brand-mark img { position: absolute; width: 98px; height: 98px; max-width: none; top: -23px; left: -11px; }
.brand-name { font-size: 24px; font-weight: 650; letter-spacing: 2px; line-height: 1.2; }
.brand-name small { display: block; font-size: 10px; font-weight: 500; letter-spacing: 1.9px; margin-top: 7px; }
.main-nav { display: flex; align-items: center; gap: 36px; height: 100%; }
.main-nav > a { display: inline-flex; align-items: center; position: relative; height: 100%; font-size: 16px; transition: color .2s; }
.main-nav > a:hover, .main-nav > a[aria-current] { color: var(--blue); }
.main-nav > a[aria-current]::after { content: ''; height: 3px; position: absolute; left: 0; right: 0; bottom: 0; background: var(--blue); }
.main-nav > .header-contact { gap: 8px; height: 38px; border-left: 1px solid var(--line); padding-left: 28px; color: var(--blue); margin-left: 4px; }
.header-contact > span { font-size: 20px; margin-left: 8px; }
.menu-toggle { display: none; background: transparent; width: 44px; height: 44px; padding: 10px; }
.menu-toggle span { display: block; height: 2px; width: 22px; background: var(--navy); margin: 6px 0; transition: transform .2s; }

/* Home */
.hero { position: relative; overflow: hidden; background: var(--navy); color: white; }
.hero-art { position: absolute; width: 1150px; max-width: none; right: -220px; top: -25px; opacity: .16; pointer-events: none; }
.hero-layout { position: relative; display: grid; grid-template-columns: 1.08fr 1fr; gap: 80px; align-items: center; padding-top: 80px; padding-bottom: 72px; }
.hero-copy { padding: 7px 0; }
.hero .eyebrow { display: flex; align-items: center; gap: 12px; color: #abbed5; letter-spacing: 2px; font-size: 14px; margin-bottom: 28px; }
.hero .eyebrow > span { width: 25px; height: 2px; background: var(--cyan); }
.hero h1 { font-size: calc(clamp(46px, 5.2vw, 70px) + 2px); font-weight: 600; line-height: 1.27; letter-spacing: 1px; margin-bottom: 28px; }
.hero h1 > span { color: #75daed; }
.hero-description { max-width: 530px; font-size: 17px; color: #b9c9dc; line-height: 2; }
.hero-actions { display: flex; gap: 15px; margin-top: 34px; }
.hero .button-primary { background: #2678f2; }
.hero .button-primary:hover { background: #3987ff; }
.hero-markets { display: flex; align-items: center; gap: 19px; font-size: 14px; margin-top: 40px; color: #839bb5; }
.hero-markets strong { color: #c2d3e6; font-weight: 500; font-size: 16px; }
.hero-markets i { height: 11px; width: 1px; background: #354b66; }
.hero-visual { position: relative; }
.hero-photo-frame { position: relative; overflow: hidden; border-radius: 130px 8px 8px 8px; aspect-ratio: 1.02; background: #283f5e; }
.hero-photo { width: 100%; height: 100%; object-fit: cover; }
.hero-photo-frame::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 50%, #071a32dd); }
.hero-photo-caption { position: absolute; left: 30px; bottom: 28px; z-index: 1; }
.hero-photo-caption span { font-size: 12px; letter-spacing: 3px; color: #d5e2ed; }
.hero-photo-caption p { font-size: 23px; letter-spacing: 1px; margin-top: 7px; }
.hero-visual-label { display: flex; align-items: center; gap: 9px; margin-top: 17px; font-size: 12px; color: #9aafc9; letter-spacing: 2px; }
.hero-visual-label > span:last-child { margin-left: auto; color: #7891af; font-size: 11px; }
.status-dot { width: 5px; height: 5px; border-radius: 50%; background: #53cce2; }
.hero-bottom { display: flex; justify-content: space-between; align-items: center; min-height: 66px; border-top: 1px solid #ffffff20; color: #8da4bf; font-size: 13px; letter-spacing: 1.5px; position: relative; }
.hero-bottom a { display: inline-flex; align-items: center; gap: 20px; }
.hero-bottom a:hover { color: white; }
.hero-bottom a span { color: var(--cyan); font-size: 22px; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.feature-card { padding: 32px 30px; display: flex; flex-direction: column; }
.feature-card + .feature-card { border-left: 1px solid var(--line); }
.feature-top { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 25px; }
.feature-top img { width: 63px; height: 65px; object-fit: contain; }
.feature-top > span { font-size: 13px; color: #92a4b9; letter-spacing: 2px; }
.feature-card h3 { font-size: 21px; line-height: 1.6; font-weight: 600; margin-bottom: 14px; }
.feature-card p { color: var(--muted); font-size: 15px; line-height: 1.95; margin-bottom: 26px; }
.feature-card .text-link { margin-top: auto; font-size: 14px; }
.platform-section { background: var(--paper); }
.platform-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 100px; align-items: center; }
.platform-layout .section-description { margin: 22px 0 28px; max-width: 475px; }
.platform-list > div { display: flex; gap: 15px; align-items: center; padding: 20px 0; border-bottom: 1px solid #dce4ef; }
.platform-list > div:first-child { padding-top: 0; }
.platform-list > div:last-child { border: 0; padding-bottom: 0; }
.platform-list img { width: 24px; height: 24px; flex-shrink: 0; }
.platform-list p { font-size: 16px; }
.security-intro { display: grid; grid-template-columns: 1.1fr 1fr; gap: 80px; align-items: center; margin-bottom: 64px; }
.security-image { position: relative; background: #f6f8fb; overflow: hidden; border-radius: 5px; }
.security-image img { width: 100%; }
.security-image > span { display: block; padding: 0 24px 22px; text-align: right; font-size: 13px; letter-spacing: 2px; color: #7c8c9d; }
.security-intro .section-description { margin: 22px 0; font-size: 17px; }
.assurance-list { border-top: 1px solid var(--line); }
.assurance-list > div { display: grid; grid-template-columns: 45px 285px 1fr 22px; align-items: center; gap: 24px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.assurance-list > div > span { font-size: 14px; color: #8b9baf; }
.assurance-list h3 { font-size: 19px; font-weight: 550; }
.assurance-list p { font-size: 15px; color: var(--muted); }
.assurance-list > div > span:last-child { color: #9db6d4; font-size: 22px; }
.download-strip { background: #edf3fd; padding: 40px 0; border-top: 1px solid #e0e9f8; }
.download-strip-inner, .download-strip-brand { display: flex; align-items: center; gap: 24px; }
.download-strip-inner { justify-content: space-between; }
.download-strip-brand > img { width: 82px; height: 82px; border-radius: 14px; background: white; }
.download-strip .eyebrow { margin-bottom: 5px; }
.download-strip h2 { font-size: 24px; font-weight: 600; }

/* Shared inner pages */
.page-hero { padding: 28px 0 58px; background: #f0f5fc; border-bottom: 1px solid #e4edf8; }
.breadcrumb { display: flex; align-items: center; gap: 12px; color: #7a8ca2; font-size: 14px; margin-bottom: 38px; flex-wrap: wrap; }
.breadcrumb a:hover { color: var(--blue); }
.breadcrumb [aria-current] { color: var(--ink); }
.page-hero h1 { font-size: calc(clamp(34px, 4vw, 48px) + 2px); line-height: 1.35; font-weight: 600; letter-spacing: -1px; }
.page-hero .eyebrow { margin-bottom: 12px; }
.page-hero .section-description { margin-top: 18px; max-width: 690px; }
.page-hero .section-title { font-size: calc(clamp(34px, 4vw, 48px) + 2px); }
.prose p { color: var(--muted); font-size: 17px; line-height: 2.15; margin-top: 22px; }
.about-intro { display: grid; grid-template-columns: 1.1fr 1fr; gap: 68px; align-items: center; }
.about-intro .section-heading { margin-bottom: 0; }
.about-photo { width: 100%; }
.about-photo img { width: 100%; border-radius: 5px; }
.about-photo figcaption { margin-top: 15px; color: var(--muted); font-size: 14px; }
.document-feature { display: grid; grid-template-columns: 1fr 1.05fr; gap: 75px; align-items: center; }
.document-feature .section-description { margin-top: 24px; }
.document-feature img { max-height: 450px; object-fit: contain; width: 100%; background: #fff; padding: 12px; border: 1px solid var(--line); border-radius: 5px; }
.document-feature figcaption { font-size: 14px; color: var(--muted); margin-top: 12px; text-align: center; }
.certificate-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.certificate-card { border: 1px solid var(--line); border-radius: 5px; padding: 20px; background: #fff; min-width: 0; transition: border-color .2s, box-shadow .2s; }
.certificate-card:hover { border-color: #aac8ef; box-shadow: 0 8px 25px #123e6510; }
.certificate-card .image-preview { background: #f3f5f8; }
.certificate-card img { width: 100%; height: 270px; padding: 12px; object-fit: contain; }
.certificate-card figcaption { margin-top: 16px; font-size: 16px; line-height: 1.75; }
.image-preview { display: block; padding: 0; width: 100%; background: transparent; position: relative; cursor: zoom-in; }
.image-preview::after { content: '↗'; position: absolute; right: 12px; bottom: 12px; display: grid; place-items: center; width: 31px; height: 31px; border-radius: 50%; background: #fff; color: var(--blue); box-shadow: 0 2px 8px #0b203d1a; font-size: 20px; }
.image-preview:hover::after { background: var(--blue); color: white; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.contact-item { display: flex; align-items: flex-start; gap: 22px; padding: 30px; background: white; border: 1px solid var(--line); border-radius: 5px; }
.contact-item img { width: 40px; height: 40px; object-fit: contain; flex-shrink: 0; }
.contact-item h3 { font-size: 20px; font-weight: 550; margin-bottom: 10px; }
.contact-item > div { min-width: 0; }
.contact-item p { color: var(--muted); font-size: 16px; line-height: 2; overflow-wrap: anywhere; }
.contact-item a:hover { color: var(--blue); }
.contact-item .text-link { margin-top: 12px; }
.help-list { margin-top: 30px; }
.help-card { display: flex; align-items: center; gap: 30px; border: 1px solid var(--line); border-radius: 5px; padding: 36px; transition: background .2s, border-color .2s; }
.help-card:hover { background: #f6f9ff; border-color: #aac8ef; }
.help-card-icon { display: grid; place-items: center; width: 76px; height: 76px; border-radius: 8px; background: var(--navy); flex-shrink: 0; }
.help-card-icon img { width: 40px; height: 40px; object-fit: contain; }
.help-card-content { flex: 1; }
.help-card-content h2, .help-card-content h3 { font-size: 24px; margin-bottom: 8px; font-weight: 600; }
.help-card-content p { color: var(--muted); font-size: 16px; }
.help-card-number { color: #8fa2b9; font-size: 14px; letter-spacing: 2px; }
.help-card .text-link { margin-top: 12px; }
.support-banner { display: flex; align-items: center; justify-content: space-between; gap: 30px; padding: 38px; background: var(--paper); border-left: 3px solid var(--blue); margin-top: 42px; }
.support-banner h2, .support-banner h3 { font-size: 24px; font-weight: 550; }
.support-banner p { margin-top: 8px; color: var(--muted); }
.guide-layout { display: grid; grid-template-columns: 225px minmax(0, 1fr); gap: 60px; align-items: start; }
.guide-sidebar { position: sticky; top: 118px; padding: 22px 0; border-top: 2px solid var(--blue); }
.guide-sidebar .eyebrow { margin: 0 15px 18px; }
.guide-sidebar h2 { font-size: 20px; margin: 0 15px 18px; }
.guide-sidebar a { display: flex; gap: 12px; padding: 12px 15px; font-size: 15px; border-radius: 3px; color: var(--muted); }
.guide-sidebar a span { font-size: 13px; color: #9baac0; padding-top: 1px; }
.guide-sidebar a:hover, .guide-sidebar a[aria-current] { background: #eaf2ff; color: var(--blue); }
.guide-step { margin-bottom: 50px; scroll-margin-top: 115px; }
.guide-step figcaption { display: flex; align-items: center; gap: 18px; margin-bottom: 18px; }
.step-number { display: grid; place-items: center; width: 35px; height: 35px; color: var(--blue); background: #edf4ff; font-size: 14px; flex-shrink: 0; }
.guide-step h2 { font-size: 22px; font-weight: 550; }
.guide-step .image-preview { border: 1px solid var(--line); border-radius: 4px; overflow: hidden; }
.guide-step img { width: 100%; }

/* Download */
.download-hero { background: #f0f5fc url('../images/light-background.jpg?v=1.0.5') center / cover no-repeat; }
.download-layout { display: grid; grid-template-columns: 1.3fr 1fr; gap: 95px; align-items: center; padding-bottom: 14px; }
.app-heading { display: flex; align-items: center; gap: 20px; margin-bottom: 27px; }
.app-logo { width: 88px; height: 88px; border-radius: 18px; border: 1px solid #dee7f3; background: white; }
.app-heading .eyebrow { margin-bottom: 6px; }
.app-heading h1 { font-size: 36px; }
.download-tagline { font-size: 26px; font-weight: 500; line-height: 1.7; }
.download-platforms { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 25px; }
.download-platforms a { padding: 7px 15px; border: 1px solid #c6d4e7; background: #ffffff85; font-size: 14px; border-radius: 3px; color: #465f7d; }
.download-platforms a:hover { border-color: var(--blue); color: var(--blue); }
.download-photo { width: 100%; aspect-ratio: 1.4; border-radius: 65px 5px 5px 5px; object-fit: cover; }
.download-section { padding-top: 70px; }
.download-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.download-card { border: 1px solid var(--line); padding: 30px; border-radius: 6px; background: white; scroll-margin-top: 112px; }
.download-card-heading { display: flex; align-items: center; gap: 16px; padding-bottom: 25px; border-bottom: 1px solid var(--line); margin-bottom: 12px; }
.platform-icon { width: 50px; height: 50px; border-radius: 11px; background: #edf4ff; color: var(--blue); display: grid; place-items: center; }
.platform-icon svg { width: 26px; height: 26px; }
.download-card h2 { font-size: 24px; font-weight: 550; }
.download-card-heading p { font-size: 14px; color: var(--muted); }
.download-card-heading > .platform-code { margin-left: auto; font-size: 13px; letter-spacing: 1px; color: #99a9bd; }
.download-link { display: flex; width: 100%; align-items: center; gap: 16px; padding: 19px 0; background: transparent; text-align: left; border-bottom: 1px solid #edf0f5; }
.download-link:last-child { border: 0; padding-bottom: 5px; }
.download-link > span:first-child { font-size: 13px; color: #9baec4; }
.download-link strong { font-size: 16px; font-weight: 500; flex: 1; }
.download-link > span:last-child { color: var(--blue); font-size: 21px; transition: transform .2s; }
.download-link:hover { color: var(--blue); }
.download-link:hover > span:last-child { transform: translateY(3px); }
.download-note { margin-top: 26px; font-size: 15px; color: var(--muted); text-align: center; }
.download-note a { color: var(--blue); border-bottom: 1px solid #bbd2f5; }

/* Dialogs */
dialog { border: 0; padding: 0; }
dialog::backdrop { background: #071427cf; backdrop-filter: blur(6px); }
.download-dialog { width: min(440px, calc(100% - 40px)); border-radius: 10px; padding: 35px; box-shadow: 0 20px 100px #0004; color: var(--ink); }
.dialog-close { width: 38px; height: 38px; border-radius: 50%; background: #f0f4f9; color: #6e829d; font-size: 29px; line-height: 1; }
.download-dialog > .dialog-close { position: absolute; right: 15px; top: 15px; }
.download-dialog .eyebrow { margin-top: 8px; margin-bottom: 12px; }
.download-dialog h2 { font-size: 28px; font-weight: 600; margin-bottom: 12px; }
.download-dialog p { font-size: 16px; color: var(--muted); }
.download-dialog label { display: block; font-size: 15px; margin: 25px 0 8px; }
.download-dialog input { display: block; width: 100%; height: 50px; border: 1px solid #c8d5e6; padding: 12px 14px; border-radius: 4px; background: #fff; color: var(--ink); }
.download-dialog input[aria-invalid="true"] { border-color: #c43939; }
.download-dialog .form-message { color: #bd3030; min-height: 24px; margin: 8px 0 14px; font-size: 14px; }
.download-dialog .button { width: 100%; }
.download-dialog .dialog-help { font-size: 14px; margin-top: 20px; text-align: center; }
.dialog-help a { color: var(--blue); }
.image-dialog { width: min(1240px, 96vw); height: min(900px, 96dvh); max-height: 96dvh; background: transparent; color: white; overflow: hidden; }
.image-dialog-toolbar { height: 50px; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 0 10px; }
.image-dialog-toolbar > span { font-size: 14px; letter-spacing: 2px; }
.image-dialog-toolbar a { font-size: 14px; margin-left: auto; }
.image-dialog .dialog-close { background: #ffffff20; color: white; }
.image-dialog-stage { display: flex; align-items: center; gap: 10px; height: calc(100% - 106px); pointer-events: none; }
.image-dialog-stage img { object-fit: contain; max-height: 100%; width: calc(100% - 108px); pointer-events: auto; }
.preview-nav { width: 44px; height: 44px; background: #ffffff20; color: white; border-radius: 50%; font-size: 22px; flex-shrink: 0; pointer-events: auto; }
.preview-nav:hover, .image-dialog .dialog-close:hover { background: #ffffff40; }
.image-dialog > p { padding: 14px 10px; text-align: center; font-size: 15px; height: 56px; }

/* Footer */
.site-footer { background: var(--navy-deep); color: #a6b6ca; padding: 60px 0 25px; }
.footer-main { display: grid; grid-template-columns: 1.55fr .9fr 1.1fr 1fr; gap: 35px; padding-bottom: 44px; }
.footer-brand .brand-name { color: #eff4fb; font-size: 22px; }
.footer-brand .brand-mark { width: 65px; height: 42px; border-radius: 3px; }
.footer-brand .brand-mark img { width: 87px; height: 87px; top: -21px; left: -10px; }
.footer-brand > p { margin-top: 20px; font-size: 13px; color: #7891ad; }
.footer-column h2 { font-size: 14px; font-weight: 500; margin: 3px 0 20px; color: #ebf0f6; }
.footer-column > a { display: block; width: fit-content; font-size: 14px; line-height: 2.25; }
.footer-column > a:hover { color: white; }
.trading-hours { font-size: 15px; line-height: 2; font-variant-numeric: tabular-nums; letter-spacing: .5px; }
.footer-column > .footer-phone { font-size: 24px; font-weight: 500; color: white; letter-spacing: .4px; line-height: 1.2; margin-bottom: 9px; }
.footer-bottom { padding-top: 23px; border-top: 1px solid #ffffff14; font-size: 12px; line-height: 2; color: #768ba5; }
.footer-legal { display: flex; justify-content: space-between; gap: 20px; padding-top: 13px; color: #647992; }

/* Responsive */
@media (min-width: 1600px) { :root { --content: 1320px; } .hero-layout { gap: 100px; } }
@media (max-width: 1100px) {
  .container { width: calc(100% - 64px); }
  .main-nav { gap: 24px; }
  .main-nav > .header-contact { padding-left: 20px; }
  .hero-layout { gap: 45px; padding-top: 64px; padding-bottom: 60px; }
  .hero-actions { gap: 12px; }
  .hero-actions .button { padding-inline: 18px; gap: 18px; }
  .hero h1 { font-size: 56px; }
  .hero-photo-frame { border-top-left-radius: 95px; }
  .feature-card { padding: 26px 22px; }
  .feature-card h3 { font-size: 19px; }
  .platform-layout, .security-intro { gap: 55px; }
  .assurance-list > div { grid-template-columns: 32px 250px 1fr 18px; gap: 17px; }
  .about-intro, .document-feature, .download-layout { gap: 40px; }
  .certificate-card img { height: 240px; }
  .footer-main { gap: 25px; grid-template-columns: 1.3fr .8fr 1fr 1fr; }
}
@media (max-width: 900px) {
  .section { padding: 70px 0; }
  .header-inner { height: 76px; }
  .menu-toggle { display: block; }
  .main-nav { display: none; position: absolute; top: 76px; left: 0; width: 100%; height: auto; padding: 12px 32px 22px; background: white; border-bottom: 1px solid var(--line); box-shadow: 0 15px 20px #0b203d0d; }
  .main-nav.is-open { display: flex; flex-direction: column; align-items: stretch; gap: 0; }
  .main-nav > a { padding: 15px 0; height: auto; }
  .main-nav > a[aria-current]::after { display: none; }
  .main-nav > .header-contact { border-left: 0; border-top: 1px solid var(--line); padding: 20px 0 5px; margin: 8px 0 0; height: auto; }
  .menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }
  .hero-layout { grid-template-columns: 1.12fr 1fr; gap: 32px; }
  .hero h1 { font-size: 46px; }
  .hero-description { font-size: 15px; }
  .hero .eyebrow { font-size: 12px; letter-spacing: 1px; }
  .hero-actions { flex-wrap: wrap; }
  .hero-markets { gap: 12px; flex-wrap: wrap; font-size: 12px; }
  .hero-markets strong { font-size: 14px; }
  .hero-photo-caption { left: 22px; bottom: 22px; }
  .hero-photo-caption p { font-size: 18px; }
  .hero-visual-label { letter-spacing: 1px; }
  .hero-visual-label > span:last-child { display: none; }
  .section-title { font-size: 32px; }
  .section-description { font-size: 16px; }
  .section-heading { gap: 30px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { display: grid; grid-template-columns: 70px 1fr; column-gap: 22px; padding: 26px; }
  .feature-card + .feature-card { border-left: 0; border-top: 1px solid var(--line); }
  .feature-top { grid-row: 1 / 4; margin: 0; flex-direction: column; justify-content: flex-start; gap: 20px; }
  .feature-top > span { margin-left: 25px; }
  .feature-card h3 { font-size: 21px; margin-bottom: 10px; }
  .feature-card p { margin-bottom: 12px; }
  .platform-layout, .security-intro { gap: 36px; }
  .platform-list p { font-size: 14px; }
  .assurance-list > div { grid-template-columns: 25px 200px 1fr; }
  .assurance-list > div > span:last-child { display: none; }
  .assurance-list h3 { font-size: 17px; }
  .assurance-list p { font-size: 14px; }
  .download-strip h2 { font-size: 20px; }
  .download-strip-brand > img { width: 65px; height: 65px; }
  .about-intro, .document-feature { grid-template-columns: 1fr; gap: 35px; }
  .about-photo img { max-height: 420px; object-fit: cover; }
  .certificate-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .contact-item { gap: 15px; padding: 24px; }
  .contact-item img { width: 32px; height: 32px; }
  .contact-grid { gap: 20px; }
  .guide-layout { grid-template-columns: 175px minmax(0, 1fr); gap: 26px; }
  .guide-sidebar { top: 100px; }
  .guide-sidebar a { font-size: 14px; padding-inline: 10px; }
  .download-layout { gap: 30px; }
  .download-tagline { font-size: 22px; }
  .download-card { padding: 24px; }
  .footer-main { grid-template-columns: 1.1fr 1fr; gap: 35px; }
  .footer-column h2 { margin-bottom: 13px; }
}
@media (max-width: 600px) {
  html { scroll-padding-top: 86px; }
  .container { width: calc(100% - 40px); }
  .header-inner { height: 70px; }
  .brand { gap: 5px; }
  .brand-mark { width: 64px; height: 43px; }
  .brand-mark img { width: 85px; height: 85px; left: -10px; top: -20px; }
  .brand-name { font-size: 22px; }
  .brand-name small { font-size: 9px; letter-spacing: 1.8px; margin-top: 6px; }
  .main-nav { top: 70px; padding-inline: 25px; }
  .section { padding: 55px 0; }
  .eyebrow { font-size: 12px; letter-spacing: 1.5px; margin-bottom: 12px; }
  .section-title { font-size: 30px; }
  .section-heading { display: block; margin-bottom: 30px; }
  .section-heading > .section-description { margin-top: 16px; }
  .hero-layout { grid-template-columns: 1fr; padding-top: 44px; padding-bottom: 28px; gap: 32px; }
  .hero-copy { padding: 0; }
  .hero .eyebrow { margin-bottom: 22px; }
  .hero h1 { font-size: 48px; line-height: 1.3; margin-bottom: 22px; }
  .hero-description { font-size: 15px; max-width: 430px; }
  .hero-actions { margin-top: 26px; gap: 10px; flex-wrap: wrap; }
  .hero-actions .button { font-size: 14px; min-height: 48px; gap: 14px; padding-inline: 16px; white-space: nowrap; }
  .hero-markets { margin-top: 24px; gap: 15px; }
  .hero-photo-frame { aspect-ratio: 1.65; border-radius: 65px 5px 5px 5px; }
  .hero-photo { object-position: center 42%; }
  .hero-photo-caption { left: 24px; bottom: 20px; }
  .hero-photo-caption p { font-size: 20px; }
  .hero-visual-label { margin-top: 13px; font-size: 11px; }
  .hero-visual-label > span:last-child { display: inline; }
  .hero-bottom { min-height: 58px; font-size: 11px; letter-spacing: 0; gap: 20px; }
  .hero-bottom a { gap: 10px; white-space: nowrap; }
  .hero-bottom a span { font-size: 19px; }
  .feature-card { padding: 25px 20px; column-gap: 18px; grid-template-columns: 49px 1fr; }
  .feature-top img { width: 46px; height: 50px; }
  .feature-top > span { margin-left: 16px; }
  .feature-card h3 { font-size: 18px; }
  .feature-card p { font-size: 14px; }
  .platform-layout, .security-intro { grid-template-columns: 1fr; gap: 32px; }
  .platform-layout .section-description { margin: 18px 0 22px; }
  .platform-list > div { padding-block: 16px; }
  .platform-list p { font-size: 15px; }
  .security-intro { margin-bottom: 35px; }
  .security-intro > div:last-child { grid-row: 1; }
  .security-intro .section-description { font-size: 16px; }
  .security-image > span { padding-bottom: 15px; font-size: 12px; }
  .assurance-list > div { grid-template-columns: 26px 1fr; gap: 8px 14px; padding: 22px 0; }
  .assurance-list > div > span:first-child { grid-column: 1; grid-row: 1; }
  .assurance-list h3 { grid-column: 2; }
  .assurance-list p { grid-column: 2; }
  .download-strip { padding: 30px 0; }
  .download-strip-inner { flex-direction: column; align-items: stretch; gap: 24px; }
  .download-strip-brand { gap: 16px; }
  .download-strip-brand > img { width: 62px; height: 62px; }
  .download-strip h2 { font-size: 18px; }
  .page-hero { padding: 22px 0 40px; }
  .breadcrumb { font-size: 13px; margin-bottom: 26px; gap: 10px; }
  .page-hero h1, .page-hero .section-title { font-size: 36px; }
  .page-hero .section-description { font-size: 15px; margin-top: 14px; }
  .prose p { font-size: 16px; margin-top: 18px; }
  .certificate-grid { gap: 14px; }
  .certificate-card { padding: 10px; }
  .certificate-card img { height: 190px; padding: 4px; }
  .certificate-card figcaption { font-size: 13px; margin-top: 12px; }
  .certificate-card .image-preview::after { width: 25px; height: 25px; right: 5px; bottom: 5px; font-size: 16px; }
  .contact-grid { grid-template-columns: 1fr; gap: 16px; }
  .contact-item { padding: 24px; }
  .contact-item p { font-size: 15px; overflow-wrap: anywhere; }
  .help-card { gap: 18px; padding: 24px 18px; align-items: flex-start; }
  .help-card-icon { width: 54px; height: 54px; }
  .help-card-icon img { width: 32px; height: 32px; }
  .help-card-content h2, .help-card-content h3 { font-size: 21px; }
  .help-card-content p { font-size: 14px; }
  .help-card-number { display: none; }
  .support-banner { padding: 26px 22px; align-items: flex-start; flex-direction: column; gap: 22px; margin-top: 30px; }
  .support-banner h2, .support-banner h3 { font-size: 22px; }
  .support-banner p { font-size: 15px; }
  .guide-layout { grid-template-columns: 1fr; gap: 34px; }
  .guide-sidebar { position: static; padding-top: 18px; }
  .guide-sidebar nav { display: grid; grid-template-columns: 1fr 1fr; gap: 2px; }
  .guide-sidebar .eyebrow, .guide-sidebar h2 { margin-left: 10px; }
  .guide-step { margin-bottom: 32px; scroll-margin-top: 88px; }
  .guide-step h2 { font-size: 20px; }
  .guide-step figcaption { gap: 13px; }
  .download-layout { grid-template-columns: 1fr; gap: 30px; padding-bottom: 0; }
  .app-heading { gap: 16px; margin-bottom: 20px; }
  .app-logo { width: 75px; height: 75px; border-radius: 15px; }
  .app-heading h1 { font-size: 30px; }
  .download-tagline { font-size: 22px; }
  .download-photo { aspect-ratio: 2.1; border-radius: 55px 5px 5px 5px; }
  .download-platforms { margin-top: 20px; }
  .download-grid { grid-template-columns: 1fr; gap: 20px; }
  .download-card { padding: 25px; }
  .download-card-heading { display: grid; grid-template-columns: 50px minmax(0, 1fr); gap: 4px 16px; }
  .download-card-heading .platform-icon { grid-row: 1 / 3; }
  .download-card-heading > .platform-code { grid-column: 2; margin-left: 0; }
  .download-note { font-size: 14px; line-height: 2; }
  .download-dialog { padding: 28px; }
  .image-dialog { width: 100%; max-width: 100%; height: 94dvh; }
  .image-dialog-stage { gap: 4px; }
  .preview-nav { width: 32px; height: 38px; border-radius: 4px; font-size: 18px; }
  .image-dialog-stage img { width: calc(100% - 72px); }
  .image-dialog > p { font-size: 13px; }
  .site-footer { padding-top: 40px; }
  .footer-main { grid-template-columns: 1fr 1fr; gap: 32px 20px; padding-bottom: 32px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-brand > p { margin-top: 14px; font-size: 13px; }
  .footer-contact { grid-column: 1 / -1; }
  .footer-contact > a { display: inline-block; }
  .footer-contact > .footer-phone { margin-right: 22px; }
  .footer-legal { flex-direction: column; gap: 5px; padding-top: 12px; }
  .footer-bottom { font-size: 12px; }
}
@media (max-width: 360px) {
  .container { width: calc(100% - 32px); }
  .hero h1 { font-size: 44px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .button { font-size: 13px; padding-inline: 13px; gap: 8px; }
  .hero-markets { gap: 12px; }
  .certificate-card img { height: 155px; }
  .footer-contact > a { display: block; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}
@media print {
  [data-site-header], [data-site-footer], .skip-link, .guide-sidebar, .image-preview::after, .support-banner { display: none; }
  .container { width: 100%; }
  .section { padding: 24px 0; }
  .page-hero { background: white; padding: 20px 0; }
  .guide-layout { display: block; }
  .guide-step, .certificate-card { break-inside: avoid; }
}