:root {
    --b2b-ink: #111b1b;
    --b2b-muted: #5d6867;
    --b2b-line: rgba(17, 31, 30, 0.15);
    --b2b-paper: #f5f7f6;
    --b2b-white: #ffffff;
    --b2b-teal: #08a89a;
    --b2b-teal-dark: #07887d;
    --b2b-charcoal: #0f1717;
}

html { scroll-behavior: smooth; }
body.b2b-home-page {
    margin: 0;
    color: var(--b2b-ink);
    background: var(--b2b-white);
    font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    letter-spacing: 0;
    -webkit-font-smoothing: antialiased;
}
body.b2b-home-page * { box-sizing: border-box; }
body.b2b-home-page a { color: inherit; text-decoration: none; }
.b2b-container { width: min(1180px, calc(100% - 64px)); margin: 0 auto; }

.b2b-nav-wrap {
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    z-index: 60;
    color: #fff;
    background: rgba(7, 17, 18, 0.18);
    border-bottom: 1px solid rgba(255, 255, 255, 0.18);
    backdrop-filter: blur(12px);
}
.b2b-nav-desktop { display: flex; align-items: center; height: 78px; }
.b2b-brand { display: inline-flex; align-items: center; width: 214px; flex: 0 0 214px; }
.b2b-logo {
    width: 96px;
    height: 38px;
    background-repeat: no-repeat;
    background-position: left center;
    background-size: contain;
    filter: brightness(0) invert(1);
}
.b2b-brand span { margin-left: 8px; color: #fff; font-size: 19px; font-weight: 760; white-space: nowrap; }
.b2b-nav-links { display: flex; align-items: stretch; gap: 42px; height: 100%; margin-left: 78px; font-size: 15px; font-weight: 650; }
.b2b-nav-links a { position: relative; display: inline-flex; align-items: center; color: rgba(255, 255, 255, 0.84); transition: color 180ms ease; }
.b2b-nav-links a::after { position: absolute; right: 0; bottom: -1px; left: 0; height: 2px; background: var(--b2b-teal); content: ""; opacity: 0; transform: scaleX(0.45); transition: opacity 180ms ease, transform 180ms ease; }
.b2b-nav-links a:hover, .b2b-nav-links a:focus-visible, .b2b-nav-links a.is-active { color: #fff; }
.b2b-nav-links a:hover::after, .b2b-nav-links a:focus-visible::after, .b2b-nav-links a.is-active::after { opacity: 1; transform: scaleX(1); }
.b2b-nav-actions { display: flex; align-items: center; gap: 22px; margin-left: auto; font-size: 15px; font-weight: 650; }
.b2b-login-link { color: rgba(255, 255, 255, 0.9); transition: color 180ms ease; }
.b2b-login-link:hover, .b2b-login-link:focus-visible { color: #fff; }
.b2b-nav-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 74px;
    height: 40px;
    padding: 0 18px;
    color: #fff;
    background: var(--b2b-teal);
    border: 1px solid var(--b2b-teal);
    border-radius: 4px;
    transition: background 180ms ease, border-color 180ms ease, transform 180ms ease;
}
.b2b-nav-button:hover, .b2b-nav-button:focus-visible { color: #fff; background: var(--b2b-teal-dark); border-color: var(--b2b-teal-dark); transform: translateY(-1px); }

.b2b-mobile-title { min-height: 66px; padding: 13px 20px; color: #fff; background: rgba(7, 17, 18, 0.34); }
.b2b-mobile-title .title-bar__toggle span { background: #fff; }

.b2b-hero {
    position: relative;
    display: flex;
    align-items: center;
    min-height: clamp(720px, 88vh, 900px);
    overflow: hidden;
    color: #fff;
    background-color: #182526;
    background-image: url('../images/b2b-campus-hero.png');
    background-repeat: no-repeat;
    background-position: center center;
    background-size: cover;
}
.b2b-hero-shade { position: absolute; inset: 0; background: rgba(4, 13, 14, 0.22); pointer-events: none; }
.b2b-hero-inner { position: relative; z-index: 2; padding-top: 74px; }
.b2b-hero-copy { width: min(640px, 57%); padding: 48px 0 36px; }
.b2b-eyebrow { margin: 0 0 18px; color: var(--b2b-teal); font-size: 12px; font-weight: 800; letter-spacing: 0.12em; text-transform: uppercase; }
.b2b-hero .b2b-eyebrow { color: #41d6c8; }
.b2b-hero h1 { margin: 0; color: #fff; font-size: clamp(56px, 5.15vw, 76px); line-height: 1.06; font-weight: 800; letter-spacing: 0; text-wrap: balance; }
.b2b-hero-tagline { margin: 26px 0 0; color: #fff; font-size: 31px; line-height: 1.3; font-weight: 520; }
.b2b-lead { max-width: 610px; margin: 16px 0 0; color: rgba(255, 255, 255, 0.82); font-size: 17px; line-height: 1.85; }
.b2b-hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }
.b2b-primary-btn, .b2b-secondary-btn, .b2b-light-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 164px;
    min-height: 50px;
    padding: 0 24px;
    border-radius: 4px;
    font-size: 15px;
    font-weight: 750;
    line-height: 1;
    white-space: nowrap;
    transition: background 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease;
}
.b2b-primary-btn { color: #fff; background: var(--b2b-teal); border: 1px solid var(--b2b-teal); }
.b2b-primary-btn:hover, .b2b-primary-btn:focus-visible { color: #fff; background: var(--b2b-teal-dark); border-color: var(--b2b-teal-dark); transform: translateY(-2px); }
.b2b-secondary-btn { color: #fff; background: rgba(8, 18, 19, 0.2); border: 1px solid rgba(255, 255, 255, 0.65); }
.b2b-secondary-btn:hover, .b2b-secondary-btn:focus-visible { color: #fff; background: rgba(255, 255, 255, 0.12); border-color: #fff; transform: translateY(-2px); }
.b2b-scroll-cue { position: absolute; z-index: 2; right: 40px; bottom: 34px; display: flex; align-items: center; gap: 12px; color: rgba(255, 255, 255, 0.76); font-size: 10px; font-weight: 700; letter-spacing: 0.14em; transform: rotate(90deg); transform-origin: right bottom; }
.b2b-scroll-cue i { display: block; width: 44px; height: 1px; background: rgba(255, 255, 255, 0.55); }

.b2b-concepts { padding: 90px 0 106px; background: var(--b2b-white); scroll-margin-top: 32px; }
.b2b-concept-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.b2b-concept { position: relative; min-height: 320px; padding: 0 54px 0 0; }
.b2b-concept + .b2b-concept { padding-left: 54px; border-left: 1px solid var(--b2b-line); }
.b2b-concept-no { display: block; color: var(--b2b-teal); font-size: 13px; font-weight: 800; letter-spacing: 0.1em; }
.b2b-concept h3 { margin: 84px 0 18px; color: var(--b2b-ink); font-size: 28px; line-height: 1.25; font-weight: 780; }
.b2b-concept p { max-width: 280px; margin: 0; color: var(--b2b-muted); font-size: 15px; line-height: 1.9; }
.b2b-concept a { position: absolute; bottom: 0; display: inline-flex; align-items: center; gap: 12px; color: var(--b2b-ink); font-size: 13px; font-weight: 750; }
.b2b-concept a::after { width: 38px; height: 1px; background: var(--b2b-teal); content: ""; transition: width 180ms ease; }
.b2b-concept a:hover::after, .b2b-concept a:focus-visible::after { width: 56px; }

.b2b-foundation { padding: 120px 0; background: var(--b2b-paper); scroll-margin-top: 32px; }
.b2b-foundation-grid { display: grid; grid-template-columns: 0.78fr 1.22fr; gap: 88px; align-items: center; }
.b2b-foundation-copy h2 { margin: 0; max-width: 430px; color: var(--b2b-ink); font-size: 42px; line-height: 1.25; font-weight: 780; }
.b2b-foundation-copy > p:not(.b2b-eyebrow) { margin: 26px 0 0; color: var(--b2b-muted); font-size: 16px; line-height: 1.95; }
.b2b-foundation-notes { display: grid; gap: 0; margin-top: 42px; border-top: 1px solid var(--b2b-line); }
.b2b-foundation-notes div { display: grid; grid-template-columns: 78px 1fr; gap: 16px; padding: 17px 0; border-bottom: 1px solid var(--b2b-line); }
.b2b-foundation-notes strong { color: var(--b2b-ink); font-size: 15px; }
.b2b-foundation-notes span { color: var(--b2b-muted); font-size: 14px; }
.b2b-foundation-media { position: relative; margin: 0; overflow: hidden; background: #dce3e2; }
.b2b-foundation-media img { display: block; width: 100%; height: 520px; object-fit: cover; object-position: center; transition: transform 700ms cubic-bezier(.2,.7,.2,1); }
.b2b-foundation-media:hover img { transform: scale(1.025); }
.b2b-foundation-media figcaption { position: absolute; right: 18px; bottom: 16px; padding: 9px 12px; color: rgba(255, 255, 255, 0.9); background: rgba(8, 18, 19, 0.64); border-radius: 3px; font-size: 12px; }

.b2b-manifesto { padding: 132px 0; color: #fff; background: var(--b2b-charcoal); }
.b2b-manifesto-inner { display: grid; grid-template-columns: 1.2fr 0.8fr; column-gap: 100px; align-items: end; }
.b2b-manifesto .b2b-eyebrow { grid-column: 1 / -1; color: #41d6c8; }
.b2b-manifesto h2 { margin: 0; color: #fff; font-size: 54px; line-height: 1.2; font-weight: 760; }
.b2b-manifesto p:not(.b2b-eyebrow) { max-width: 480px; margin: 0 0 8px; color: rgba(255, 255, 255, 0.66); font-size: 17px; line-height: 1.9; }
.b2b-light-btn { grid-column: 2; justify-self: start; margin-top: 34px; color: var(--b2b-charcoal); background: #fff; border: 1px solid #fff; }
.b2b-light-btn:hover, .b2b-light-btn:focus-visible { color: var(--b2b-charcoal); background: #dff7f4; border-color: #dff7f4; transform: translateY(-2px); }

.b2b-footer { padding: 62px 0 24px; color: #c8d3d1; background: #0a1111; }
.b2b-footer-grid { display: grid; grid-template-columns: 1.55fr 0.7fr 0.7fr 1fr; gap: 52px; }
.b2b-footer-logo { width: 150px; height: 38px; background-repeat: no-repeat; background-position: left center; background-size: contain; filter: brightness(0) invert(1); }
.b2b-footer p { max-width: 360px; margin: 18px 0 0; color: #879795; font-size: 14px; line-height: 1.8; }
.b2b-footer dl, .b2b-footer dd { margin: 0; }
.b2b-footer dt { margin-bottom: 18px; color: #fff; font-size: 14px; font-weight: 780; }
.b2b-footer dd { margin-top: 11px; color: #879795; font-size: 14px; }
.b2b-footer a { transition: color 160ms ease; }
.b2b-footer a:hover, .b2b-footer a:focus-visible { color: #fff; }
.b2b-beian { margin-top: 46px; padding-top: 20px; border-top: 1px solid rgba(255, 255, 255, 0.09); }
.b2b-beian p { max-width: none; margin: 0; color: #657371; font-size: 12px; }

@media (max-width: 1024px) {
    .b2b-container { width: min(100% - 48px, 920px); }
    .b2b-nav-links { gap: 30px; margin-left: 36px; }
    .b2b-hero { min-height: 720px; background-position: 56% center; }
    .b2b-hero-copy { width: 66%; }
    .b2b-concept { padding-right: 34px; }
    .b2b-concept + .b2b-concept { padding-left: 34px; }
    .b2b-foundation-grid { grid-template-columns: 0.9fr 1.1fr; gap: 48px; }
}

@media (max-width: 640px) {
    .b2b-container { width: min(100% - 32px, 560px); }
    .b2b-nav-wrap { position: absolute; background: rgba(7, 17, 18, 0.34); }
    .b2b-mobile-title { min-height: 64px; }
    .b2b-mobile-title .b2b-logo { width: 128px; height: 34px; }
    .b2b-hero { min-height: 720px; align-items: flex-end; background-position: 62% center; }
    .b2b-hero-shade { background: rgba(4, 13, 14, 0.44); }
    .b2b-hero-inner { padding-top: 70px; }
    .b2b-hero-copy { width: 100%; padding: 64px 0 72px; }
    .b2b-hero h1 { max-width: 100%; font-size: 43px; line-height: 1.12; }
    .b2b-hero-tagline { margin-top: 20px; font-size: 25px; }
    .b2b-lead { max-width: 96%; font-size: 15px; line-height: 1.8; }
    .b2b-hero-actions { display: grid; grid-template-columns: 1fr; gap: 10px; margin-top: 28px; }
    .b2b-primary-btn, .b2b-secondary-btn, .b2b-light-btn { width: 100%; min-height: 48px; }
    .b2b-scroll-cue { display: none; }
    .b2b-concepts { padding: 72px 0 80px; }
    .b2b-concept-grid { grid-template-columns: 1fr; }
    .b2b-concept, .b2b-concept + .b2b-concept { min-height: 0; padding: 30px 0 58px; border-left: 0; border-bottom: 1px solid var(--b2b-line); }
    .b2b-concept h3 { margin: 28px 0 12px; font-size: 25px; }
    .b2b-concept p { max-width: none; font-size: 15px; }
    .b2b-concept a { bottom: 20px; }
    .b2b-foundation { padding: 78px 0; }
    .b2b-foundation-grid { grid-template-columns: 1fr; gap: 42px; }
    .b2b-foundation-copy h2 { font-size: 33px; }
    .b2b-foundation-media img { height: 360px; }
    .b2b-manifesto { padding: 82px 0; }
    .b2b-manifesto-inner { display: block; }
    .b2b-manifesto h2 { font-size: 40px; }
    .b2b-manifesto p:not(.b2b-eyebrow) { margin-top: 24px; font-size: 15px; }
    .b2b-light-btn { margin-top: 30px; }
    .b2b-footer { padding-top: 48px; }
    .b2b-footer-mobile p { max-width: none; }
    .b2b-footer-mobile-links { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 24px; color: #b8c5c3; font-size: 14px; }
    .b2b-beian { margin-top: 32px; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
}