:root {
    --scb-bg: #f6f8fb;
    --scb-surface: #ffffff;
    --scb-surface-2: #eef6f2;
    --scb-ink: #142033;
    --scb-muted: #5b6577;
    --scb-border: #dbe3ee;
    --scb-primary: #2457ff;
    --scb-primary-dark: #173ab4;
    --scb-accent: #00a878;
    --scb-warm: #f6b443;
    --scb-dark: #112033;
    --scb-dark-muted: #b7c5d8;
    --scb-radius: 8px;
    --scb-shadow: 0 18px 44px rgba(20, 32, 51, 0.11);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body.scb-body,
body {
    margin: 0;
    background: var(--scb-bg);
    color: var(--scb-ink);
    font-family: "Noto Sans SC", "Microsoft YaHei", Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    letter-spacing: 0;
}

body.scb-body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

:lang(zh-CN),
:lang(zh-TW),
:lang(zh-HK) {
    line-break: strict;
    word-break: normal;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
}

.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;
}

.scb-container {
    width: min(1440px, calc(100% - 48px));
    margin: 0 auto;
}

.scb-main {
    flex: 1 0 auto;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.86), rgba(246, 248, 251, 0) 420px),
        var(--scb-bg);
}

.scb-header {
    position: sticky;
    top: 0;
    z-index: 40;
    border-bottom: 1px solid rgba(219, 227, 238, 0.88);
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(16px);
}

.scb-header-inner {
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.scb-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    min-width: max-content;
    color: var(--scb-ink);
    font-weight: 800;
}

.scb-brand img {
    display: block;
    max-height: 38px;
    width: auto;
}

.scb-brand-mark {
    display: inline-grid;
    place-items: center;
    width: 38px;
    height: 38px;
    border-radius: var(--scb-radius);
    background: var(--scb-ink);
    color: #fff;
    font-size: 0.78rem;
    font-weight: 900;
}

.scb-header-panel {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 26px;
    width: 100%;
}

.scb-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
}

.scb-nav a,
.scb-login-link {
    display: inline-flex;
    align-items: center;
    min-height: 38px;
    padding: 0 12px;
    color: var(--scb-muted);
    font-size: 0.94rem;
    font-weight: 700;
    transition: color 0.2s ease, background 0.2s ease;
}

.scb-nav a:hover,
.scb-nav a.is-active,
.scb-login-link:hover {
    border-radius: var(--scb-radius);
    background: #edf2ff;
    color: var(--scb-primary-dark);
}

.scb-header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.scb-lang-switcher {
    position: relative;
}

.scb-lang-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 40px;
    padding: 0 12px;
    border: 1px solid var(--scb-border);
    border-radius: 999px;
    background: #fff;
    color: var(--scb-ink);
    font-size: 0.9rem;
    font-weight: 800;
    cursor: pointer;
}

.scb-lang-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    z-index: 50;
    display: none;
    min-width: 150px;
    padding: 8px;
    border: 1px solid var(--scb-border);
    border-radius: var(--scb-radius);
    background: #fff;
    box-shadow: var(--scb-shadow);
}

.scb-lang-menu.is-open {
    display: grid;
    gap: 4px;
}

.scb-lang-menu a {
    display: block;
    padding: 9px 10px;
    border-radius: var(--scb-radius);
    color: var(--scb-muted);
    font-size: 0.92rem;
    font-weight: 800;
}

.scb-lang-menu a:hover,
.scb-lang-menu a.is-active {
    background: #edf2ff;
    color: var(--scb-primary-dark);
}

.scb-menu-button {
    display: none;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border: 1px solid var(--scb-border);
    border-radius: var(--scb-radius);
    background: #fff;
    color: var(--scb-ink);
}

.scb-hero,
.scb-page-hero,
.scb-auth {
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--scb-border);
    background: #fbfcff;
}

.scb-hero {
    padding: 88px 0 72px;
}

.scb-page-hero {
    padding: 76px 0 60px;
}

.scb-auth {
    padding: 72px 0;
}

.scb-hero-grid,
.scb-page-hero-grid,
.scb-auth-grid,
.scb-split,
.scb-compare {
    display: grid;
    grid-template-columns: minmax(0, 0.82fr) minmax(520px, 1.18fr);
    gap: 48px;
    align-items: center;
}

.scb-hero-copy,
.scb-auth-copy,
.scb-narrow {
    max-width: 720px;
}

.scb-eyebrow {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    min-height: 28px;
    padding: 0 10px;
    border: 1px solid rgba(36, 87, 255, 0.18);
    border-radius: 999px;
    background: #edf2ff;
    color: var(--scb-primary-dark);
    font-size: 0.76rem;
    font-weight: 900;
    letter-spacing: 0;
    text-transform: uppercase;
}

.scb-hero h1,
.scb-page-hero h1,
.scb-auth h1 {
    margin: 16px 0 0;
    max-width: 760px;
    color: var(--scb-ink);
    font-size: clamp(2.35rem, 5.2vw, 4.15rem);
    font-weight: 900;
    line-height: 1.08;
    letter-spacing: 0;
    text-wrap: balance;
}

.scb-page-hero h1,
.scb-auth h1 {
    font-size: clamp(2.05rem, 4.2vw, 3.45rem);
}

:lang(zh-CN) .scb-hero h1,
:lang(zh-TW) .scb-hero h1,
:lang(zh-HK) .scb-hero h1 {
    max-width: 940px;
    font-size: clamp(2.25rem, 4.2vw, 3.7rem);
    font-weight: 850;
    line-height: 1.16;
}

:lang(zh-CN) .scb-page-hero h1,
:lang(zh-TW) .scb-page-hero h1,
:lang(zh-HK) .scb-page-hero h1,
:lang(zh-CN) .scb-auth h1,
:lang(zh-TW) .scb-auth h1,
:lang(zh-HK) .scb-auth h1 {
    max-width: 680px;
    font-size: clamp(2rem, 3.7vw, 3.1rem);
    font-weight: 850;
    line-height: 1.18;
}

.scb-lead,
.scb-section-heading p,
.scb-auth-copy p,
.scb-page-hero p {
    color: var(--scb-muted);
    font-size: 1.12rem;
    line-height: 1.75;
}

.scb-lead {
    margin: 20px 0 0;
    max-width: 700px;
}

.scb-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 30px;
}

.scb-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    min-height: 48px;
    padding: 0 18px;
    border: 1px solid transparent;
    border-radius: 999px;
    font-weight: 850;
    line-height: 1;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.scb-btn:hover {
    transform: translateY(-1px);
}

.scb-btn-primary {
    background: var(--scb-primary);
    color: #fff;
    box-shadow: 0 12px 22px rgba(36, 87, 255, 0.2);
}

.scb-btn-primary:hover {
    background: var(--scb-primary-dark);
}

.scb-btn-secondary {
    border-color: var(--scb-border);
    background: #fff;
    color: var(--scb-ink);
}

.scb-btn-secondary:hover {
    border-color: #b9c6dc;
    box-shadow: 0 10px 22px rgba(20, 32, 51, 0.08);
}

.scb-btn-ghost {
    border-color: transparent;
    background: transparent;
    color: var(--scb-primary-dark);
    box-shadow: none;
}

.scb-btn-ghost:hover {
    background: #edf2ff;
}

.scb-btn-small {
    min-height: 40px;
    padding: 0 14px;
    font-size: 0.9rem;
}

.scb-btn-block {
    width: 100%;
}

.scb-cta-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: flex-end;
}

.scb-proof-row {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    margin-top: 28px;
    max-width: 820px;
}

.scb-hero-visual {
    margin: 0;
    min-height: 520px;
    border-radius: 18px;
    overflow: hidden;
}

.scb-hero-visual img {
    display: block;
    width: 100%;
    height: 100%;
    min-height: 520px;
    object-fit: cover;
    object-position: center;
}

.scb-page-visual {
    margin: 0;
    border: 1px solid rgba(189, 201, 222, 0.82);
    border-radius: 18px;
    overflow: hidden;
    background: #fff;
    box-shadow: 0 24px 60px rgba(20, 32, 51, 0.14);
}

.scb-page-visual img {
    display: block;
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}

.scb-proof-row div {
    display: grid;
    grid-template-columns: 38px minmax(0, 1fr);
    gap: 12px;
    align-items: center;
    min-height: 82px;
    padding: 14px;
    border: 1px solid var(--scb-border);
    border-radius: var(--scb-radius);
    background: #fff;
}

.scb-proof-row i {
    display: inline-grid;
    place-items: center;
    width: 38px;
    height: 38px;
    border-radius: var(--scb-radius);
    background: #edf2ff;
    color: var(--scb-primary);
}

.scb-proof-row span {
    display: block;
    color: var(--scb-ink);
    font-size: 0.95rem;
    font-weight: 850;
    line-height: 1.45;
}

.scb-feature-rail,
.scb-mini-stack,
.scb-auth-card {
    border: 1px solid var(--scb-border);
    border-radius: var(--scb-radius);
    background: var(--scb-surface);
    box-shadow: var(--scb-shadow);
}

.scb-browser-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    min-height: 46px;
    padding: 0 14px;
    border-bottom: 1px solid var(--scb-border);
    background: #f9fbff;
}

.scb-browser-bar span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #e25252;
}

.scb-browser-bar span:nth-child(2) {
    background: var(--scb-warm);
}

.scb-browser-bar span:nth-child(3) {
    background: var(--scb-accent);
}

.scb-browser-bar p {
    margin: 0 0 0 8px;
    color: var(--scb-muted);
    font-size: 0.82rem;
    font-weight: 700;
}

.scb-dashboard-preview {
    display: grid;
    grid-template-columns: 86px minmax(0, 1fr);
    min-height: 420px;
}

.scb-preview-sidebar {
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 18px 14px;
    background: var(--scb-dark);
}

.scb-preview-sidebar strong {
    display: grid;
    place-items: center;
    width: 46px;
    height: 34px;
    border-radius: var(--scb-radius);
    background: #fff;
    color: var(--scb-dark);
    font-size: 0.78rem;
}

.scb-preview-sidebar span {
    width: 100%;
    height: 9px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.22);
}

.scb-preview-main {
    padding: 24px;
}

.scb-preview-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 18px;
}

.scb-preview-top small {
    color: var(--scb-accent);
    font-weight: 900;
}

.scb-preview-top h2 {
    margin: 5px 0 0;
    max-width: 320px;
    color: var(--scb-ink);
    font-size: 1.55rem;
    font-weight: 900;
    line-height: 1.15;
}

.scb-preview-top span {
    display: inline-flex;
    min-width: max-content;
    padding: 8px 10px;
    border-radius: 999px;
    background: #e8f8f3;
    color: #007958;
    font-size: 0.78rem;
    font-weight: 900;
}

.scb-preview-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
    margin-top: 24px;
}

.scb-preview-grid article {
    min-height: 142px;
    padding: 14px;
    border: 1px solid var(--scb-border);
    border-radius: var(--scb-radius);
    background: #fbfcff;
}

.scb-preview-grid i,
.scb-feature-card i,
.scb-role-card i,
.scb-support-grid i,
.scb-mini-stack i,
.scb-stack-list i {
    display: inline-grid;
    place-items: center;
    width: 38px;
    height: 38px;
    border-radius: var(--scb-radius);
    background: #edf2ff;
    color: var(--scb-primary);
}

.scb-preview-grid strong {
    display: block;
    margin-top: 12px;
    color: var(--scb-ink);
    font-size: 0.92rem;
}

.scb-preview-grid p {
    margin: 8px 0 0;
    color: var(--scb-muted);
    font-size: 0.78rem;
    line-height: 1.45;
}

.scb-preview-chart {
    display: flex;
    align-items: end;
    gap: 12px;
    height: 130px;
    margin-top: 28px;
    padding: 18px;
    border: 1px solid var(--scb-border);
    border-radius: var(--scb-radius);
    background: #f7fafc;
}

.scb-preview-chart span {
    flex: 1;
    min-height: 24px;
    border-radius: 999px 999px 4px 4px;
    background: linear-gradient(180deg, var(--scb-accent), var(--scb-primary));
}

.scb-section {
    padding: 82px 0;
}

.scb-section-tight {
    padding-top: 64px;
}

.scb-section-soft {
    border-block: 1px solid var(--scb-border);
    background: var(--scb-surface-2);
}

.scb-section-contrast {
    background: var(--scb-dark);
    color: #fff;
}

.scb-section-contrast .scb-eyebrow {
    border-color: rgba(255, 255, 255, 0.16);
    background: rgba(255, 255, 255, 0.08);
    color: #d9f7eb;
}

.scb-section-contrast p {
    color: var(--scb-dark-muted);
}

.scb-section-heading {
    max-width: 760px;
    margin: 0 auto 34px;
    text-align: center;
}

.scb-section-heading-left {
    margin: 0;
    text-align: left;
}

.scb-section-heading h2,
.scb-split h2,
.scb-compare h2,
.scb-cta-band h2,
.scb-auth-card h2,
.scb-panel h2 {
    margin: 14px 0 0;
    color: inherit;
    font-size: clamp(2rem, 4vw, 3.15rem);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: 0;
    text-wrap: balance;
}

:lang(zh-CN) .scb-section-heading h2,
:lang(zh-TW) .scb-section-heading h2,
:lang(zh-HK) .scb-section-heading h2,
:lang(zh-CN) .scb-split h2,
:lang(zh-TW) .scb-split h2,
:lang(zh-HK) .scb-split h2,
:lang(zh-CN) .scb-compare h2,
:lang(zh-TW) .scb-compare h2,
:lang(zh-HK) .scb-compare h2,
:lang(zh-CN) .scb-cta-band h2,
:lang(zh-TW) .scb-cta-band h2,
:lang(zh-HK) .scb-cta-band h2 {
    font-size: clamp(1.72rem, 3.2vw, 2.7rem);
    font-weight: 850;
    line-height: 1.22;
}

.scb-section-heading p,
.scb-split p,
.scb-compare p,
.scb-cta-band p {
    margin: 14px 0 0;
}

.scb-feature-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.scb-feature-card,
.scb-role-card,
.scb-panel,
.scb-path-grid article,
.scb-fit-grid article,
.scb-trust-grid article,
.scb-support-grid article,
.scb-faq-list article {
    border: 1px solid var(--scb-border);
    border-radius: var(--scb-radius);
    background: #fff;
    box-shadow: 0 12px 30px rgba(20, 32, 51, 0.06);
}

.scb-path-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}

.scb-path-grid article {
    position: relative;
    min-height: 248px;
    padding: 22px;
    overflow: hidden;
}

.scb-path-grid article::after {
    content: "";
    position: absolute;
    right: -36px;
    bottom: -44px;
    width: 126px;
    height: 126px;
    border-radius: 999px;
    background: rgba(36, 87, 255, 0.08);
}

.scb-path-grid span {
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    border-radius: var(--scb-radius);
    background: var(--scb-ink);
    color: #fff;
    font-weight: 950;
}

.scb-path-grid h3 {
    margin: 20px 0 0;
    color: var(--scb-ink);
    font-size: 1.18rem;
    font-weight: 900;
    line-height: 1.34;
}

.scb-path-grid p {
    margin: 10px 0 0;
    color: var(--scb-muted);
    font-size: 1rem;
    line-height: 1.68;
}

.scb-feature-card {
    min-height: 236px;
    padding: 22px;
}

.scb-feature-card h3,
.scb-role-card h3,
.scb-support-grid h3 {
    margin: 18px 0 0;
    color: var(--scb-ink);
    font-size: 1.2rem;
    font-weight: 900;
    line-height: 1.32;
}

.scb-feature-card p,
.scb-role-card p,
.scb-support-grid p,
.scb-panel p,
.scb-faq-list p {
    margin: 10px 0 0;
    color: var(--scb-muted);
    font-size: 1.02rem;
    line-height: 1.7;
}

.scb-text-link,
.scb-role-card a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    width: fit-content;
    margin-top: 18px;
    color: var(--scb-primary-dark);
    font-weight: 900;
}

.scb-step-list {
    display: grid;
    gap: 14px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.scb-step-list li {
    display: grid;
    grid-template-columns: 58px minmax(0, 1fr);
    gap: 16px;
    min-height: 122px;
    padding: 20px;
    border: 1px solid var(--scb-border);
    border-radius: var(--scb-radius);
    background: #fff;
}

.scb-step-list > li > span {
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    border-radius: var(--scb-radius);
    background: var(--scb-ink);
    color: #fff;
    font-weight: 950;
}

.scb-step-list h3 {
    margin: 0;
    color: var(--scb-ink);
    font-size: 1.16rem;
    font-weight: 900;
    line-height: 1.34;
}

.scb-step-list p {
    margin: 8px 0 0;
    color: var(--scb-muted);
    font-size: 1.02rem;
    line-height: 1.66;
}

.scb-role-cards {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.scb-role-card {
    display: flex;
    flex-direction: column;
    min-height: 300px;
    padding: 24px;
}

.scb-role-card strong {
    display: block;
    margin-top: auto;
    padding-top: 18px;
    color: var(--scb-accent);
    line-height: 1.5;
}

.scb-compare {
    align-items: start;
}

.scb-compare-table {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.scb-compare-table > div {
    display: grid;
    gap: 10px;
    min-height: 290px;
    padding: 18px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: var(--scb-radius);
    background: rgba(255, 255, 255, 0.07);
}

.scb-compare-table span {
    color: var(--scb-warm);
    font-weight: 900;
}

.scb-compare-table strong {
    display: block;
    padding: 14px;
    border-radius: var(--scb-radius);
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    line-height: 1.45;
}

.scb-cta-band {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 34px;
    border: 1px solid var(--scb-border);
    border-radius: var(--scb-radius);
    background: #fff;
    box-shadow: var(--scb-shadow);
}

.scb-cta-band h2 {
    max-width: 720px;
}

.scb-page-hero .scb-mini-stack {
    align-self: stretch;
}

.scb-mini-stack {
    display: grid;
    gap: 0;
    overflow: hidden;
}

.scb-mini-stack article {
    display: grid;
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 14px;
    padding: 18px;
    border-bottom: 1px solid var(--scb-border);
}

.scb-mini-stack article:last-child {
    border-bottom: 0;
}

.scb-mini-stack strong {
    display: block;
    color: var(--scb-ink);
    font-size: 1.04rem;
    font-weight: 900;
    line-height: 1.34;
}

.scb-mini-stack p {
    margin: 5px 0 0;
    color: var(--scb-muted);
    font-size: 1rem;
    line-height: 1.6;
}

.scb-role-hero-card {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 24px;
    align-items: end;
    margin-top: 26px;
    padding: 30px;
    border: 1px solid var(--scb-border);
    border-radius: var(--scb-radius);
    background: #fff;
    box-shadow: var(--scb-shadow);
}

.scb-back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--scb-primary-dark);
    font-weight: 900;
}

.scb-role-benefit {
    display: grid;
    gap: 12px;
    padding: 18px;
    border-radius: var(--scb-radius);
    background: #e8f8f3;
    color: #00694e;
    line-height: 1.55;
}

.scb-role-benefit i {
    font-size: 1.4rem;
}

.scb-two-column {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    align-items: start;
}

.scb-panel {
    padding: 24px;
}

.scb-panel-muted {
    background: #f8fafc;
}

.scb-panel h2 {
    font-size: 1.65rem;
}

.scb-check-list {
    display: grid;
    gap: 12px;
    margin: 20px 0 0;
    padding: 0;
    list-style: none;
}

.scb-check-list li {
    display: grid;
    grid-template-columns: 26px minmax(0, 1fr);
    gap: 10px;
    color: var(--scb-muted);
    line-height: 1.55;
}

.scb-check-list i {
    color: var(--scb-accent);
    line-height: 1.55;
}

.scb-x-list i {
    color: #d94c4c;
}

.scb-asset-visual {
    align-self: stretch;
}

.scb-asset-visual img {
    min-height: 100%;
}

.scb-fit-grid,
.scb-trust-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}

.scb-fit-grid article {
    display: grid;
    grid-template-columns: 42px minmax(0, 1fr);
    gap: 14px;
    align-items: center;
    min-height: 132px;
    padding: 20px;
}

.scb-fit-grid i {
    display: inline-grid;
    place-items: center;
    width: 42px;
    height: 42px;
    border-radius: var(--scb-radius);
    background: #edf2ff;
    color: var(--scb-primary);
}

.scb-fit-grid span {
    color: var(--scb-ink);
    font-weight: 850;
    line-height: 1.48;
}

.scb-trust-grid article {
    min-height: 178px;
    padding: 22px;
}

.scb-trust-grid strong {
    display: block;
    color: var(--scb-ink);
    font-size: 1.12rem;
    font-weight: 900;
    line-height: 1.32;
}

.scb-trust-grid span {
    display: block;
    margin-top: 10px;
    color: var(--scb-muted);
    line-height: 1.62;
}

.scb-support-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}

.scb-support-grid article {
    min-height: 220px;
    padding: 20px;
}

.scb-feature-rail {
    display: grid;
    overflow: hidden;
}

.scb-feature-rail article {
    display: grid;
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 14px;
    padding: 20px;
    border-bottom: 1px solid var(--scb-border);
}

.scb-feature-rail article:last-child {
    border-bottom: 0;
}

.scb-feature-rail span,
.scb-start-compact span {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    border-radius: var(--scb-radius);
    background: #edf2ff;
    color: var(--scb-primary-dark);
    font-weight: 950;
}

.scb-feature-rail strong,
.scb-start-compact strong {
    display: block;
    color: var(--scb-ink);
    font-size: 1.05rem;
    font-weight: 900;
    line-height: 1.34;
}

.scb-feature-rail p,
.scb-start-compact p {
    grid-column: 2;
    margin: 6px 0 0;
    color: var(--scb-muted);
    font-size: 1rem;
    line-height: 1.6;
}

.scb-stack-list,
.scb-start-compact {
    display: grid;
    gap: 12px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.scb-stack-list div,
.scb-start-compact li {
    display: grid;
    grid-template-columns: 46px minmax(0, 1fr);
    gap: 14px;
    align-items: center;
    padding: 16px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: var(--scb-radius);
    background: rgba(255, 255, 255, 0.08);
}

.scb-stack-list span {
    color: #fff;
    font-weight: 800;
    line-height: 1.45;
}

.scb-stack-list-light div {
    border-color: var(--scb-border);
    background: #fff;
}

.scb-stack-list-light span {
    color: var(--scb-ink);
}

.scb-start-compact {
    counter-reset: compact;
}

.scb-start-compact li {
    border-color: var(--scb-border);
    background: #fff;
    box-shadow: 0 12px 30px rgba(20, 32, 51, 0.06);
}

.scb-faq-list {
    display: grid;
    gap: 14px;
    max-width: 880px;
}

.scb-faq-list article {
    padding: 24px;
}

.scb-faq-list h2 {
    margin: 0;
    color: var(--scb-ink);
    font-size: 1.24rem;
    font-weight: 900;
    line-height: 1.34;
}

.scb-auth-grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(420px, 0.78fr);
}

.scb-auth-card {
    padding: 28px;
}

.scb-auth-card h2 {
    color: var(--scb-ink);
    font-size: 2rem;
}

.scb-auth-card > p {
    margin: 8px 0 0;
    color: var(--scb-muted);
    font-size: 1.04rem;
    line-height: 1.65;
}

.scb-form {
    display: grid;
    gap: 16px;
    margin-top: 24px;
}

.scb-form-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.scb-field-full {
    grid-column: 1 / -1;
}

.scb-field label {
    display: block;
    margin-bottom: 7px;
    color: var(--scb-ink);
    font-size: 0.9rem;
    font-weight: 850;
}

.scb-field input {
    width: 100%;
    min-height: 46px;
    border: 1px solid var(--scb-border);
    border-radius: var(--scb-radius);
    background: #fbfcff;
    color: var(--scb-ink);
    padding: 0 13px;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.scb-field input:focus {
    border-color: var(--scb-primary);
    box-shadow: 0 0 0 4px rgba(36, 87, 255, 0.12);
}

.scb-field small {
    display: block;
    margin-top: 8px;
    color: var(--scb-muted);
    line-height: 1.45;
}

.scb-check-field {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    color: var(--scb-muted);
    font-weight: 700;
}

.scb-check-field input {
    width: 16px;
    height: 16px;
    accent-color: var(--scb-primary);
}

.scb-auth-switch {
    margin: 2px 0 0;
    color: var(--scb-muted);
    text-align: center;
}

.scb-auth-switch a {
    color: var(--scb-primary-dark);
    font-weight: 900;
}

.scb-role-picker {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
}

.scb-role-picker label {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 64px;
    padding: 14px;
    border: 1px solid var(--scb-border);
    border-radius: var(--scb-radius);
    background: #fbfcff;
    color: var(--scb-ink);
    cursor: pointer;
    transition: background .18s ease, border-color .18s ease, color .18s ease;
}

.scb-role-picker input {
    position: absolute;
    width: 1px;
    height: 1px;
    opacity: 0;
    pointer-events: none;
}

.scb-role-picker label:has(input:checked) {
    border-color: var(--scb-primary);
    background: var(--scb-primary);
    color: #fff;
}

.scb-role-picker strong {
    display: block;
    text-align: center;
}

.scb-role-picker small {
    margin-top: 4px;
    color: var(--scb-muted);
    line-height: 1.4;
}

.scb-footer {
    flex-shrink: 0;
    border-top: 1px solid var(--scb-border);
    background: #fff;
}

.scb-footer-grid {
    display: grid;
    grid-template-columns: minmax(280px, 1.4fr) repeat(3, minmax(150px, 0.6fr));
    gap: 28px;
    padding: 42px 0;
}

.scb-footer-brand p {
    max-width: 360px;
    margin: 16px 0 0;
    color: var(--scb-muted);
    line-height: 1.65;
}

.scb-footer-brand small {
    display: block;
    margin-top: 18px;
    color: #7a8496;
}

.scb-footer-column {
    display: grid;
    align-content: start;
    gap: 10px;
}

.scb-footer-column h2 {
    margin: 0 0 4px;
    color: var(--scb-ink);
    font-size: 0.92rem;
    font-weight: 900;
}

.scb-footer-column a {
    color: var(--scb-muted);
    font-size: 0.94rem;
    font-weight: 700;
}

.scb-footer-column a:hover {
    color: var(--scb-primary-dark);
}

@media (max-width: 1040px) {
    .scb-hero-grid,
    .scb-page-hero-grid,
    .scb-auth-grid,
    .scb-split,
    .scb-compare,
    .scb-auth-grid {
        grid-template-columns: 1fr;
    }

    .scb-feature-grid,
    .scb-role-cards,
    .scb-path-grid,
    .scb-fit-grid,
    .scb-trust-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .scb-footer-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 820px) {
    .scb-header-inner {
        min-height: 64px;
    }

    .scb-menu-button {
        display: inline-flex;
    }

    .scb-header-panel {
        position: absolute;
        left: 16px;
        right: 16px;
        top: calc(100% + 8px);
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 14px;
        padding: 16px;
        border: 1px solid var(--scb-border);
        border-radius: var(--scb-radius);
        background: #fff;
        box-shadow: var(--scb-shadow);
    }

    .scb-header-panel.is-open {
        display: flex;
    }

    .scb-nav,
    .scb-header-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .scb-nav a,
    .scb-login-link,
    .scb-lang-button,
    .scb-header-actions .scb-btn {
        justify-content: center;
        width: 100%;
    }

    .scb-lang-menu {
        position: static;
        box-shadow: none;
        width: 100%;
        margin-top: 8px;
    }

    .scb-hero,
    .scb-page-hero,
    .scb-auth,
    .scb-section {
        padding: 52px 0;
    }

    .scb-proof-row,
    .scb-feature-grid,
    .scb-role-cards,
    .scb-path-grid,
    .scb-fit-grid,
    .scb-trust-grid,
    .scb-support-grid,
    .scb-two-column,
    .scb-compare-table,
    .scb-form-grid,
    .scb-role-picker {
        grid-template-columns: 1fr;
    }

    .scb-dashboard-preview {
        grid-template-columns: 1fr;
        min-height: auto;
    }

    .scb-hero-visual,
    .scb-page-visual,
    .scb-hero-visual img,
    .scb-page-visual img {
        min-height: 320px;
    }

    .scb-preview-sidebar {
        display: none;
    }

    .scb-preview-grid {
        grid-template-columns: 1fr;
    }

    .scb-role-hero-card,
    .scb-cta-band {
        grid-template-columns: 1fr;
        flex-direction: column;
        align-items: flex-start;
    }

    .scb-cta-band .scb-btn {
        width: 100%;
    }

    .scb-cta-actions {
        width: 100%;
        justify-content: stretch;
    }

    .scb-footer-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 560px) {
    .scb-container {
        width: min(100% - 24px, 1160px);
    }

    .scb-hero h1,
    .scb-page-hero h1,
    .scb-auth h1 {
        font-size: 2.15rem;
    }

    :lang(zh-CN) .scb-hero h1,
    :lang(zh-TW) .scb-hero h1,
    :lang(zh-HK) .scb-hero h1,
    :lang(zh-CN) .scb-page-hero h1,
    :lang(zh-TW) .scb-page-hero h1,
    :lang(zh-HK) .scb-page-hero h1,
    :lang(zh-CN) .scb-auth h1,
    :lang(zh-TW) .scb-auth h1,
    :lang(zh-HK) .scb-auth h1 {
        font-size: 2rem;
        line-height: 1.22;
    }

    .scb-actions,
    .scb-preview-top {
        flex-direction: column;
        align-items: stretch;
    }

    .scb-actions .scb-btn {
        width: 100%;
    }

    .scb-step-list li,
    .scb-feature-rail article,
    .scb-fit-grid article,
    .scb-proof-row div,
    .scb-stack-list div,
    .scb-start-compact li {
        grid-template-columns: 1fr;
    }

    .scb-feature-rail p,
    .scb-start-compact p {
        grid-column: 1;
    }
}