/**
 * 商户后台登录 — Bootstrap 5 骨架 + 玻璃拟态 / 动态科技感背景
 * 由 login/index 引用
 */
*,
*::before,
*::after {
    box-sizing: border-box;
}

.sb-login-page {
    --sb-l-cyan: #22d3ee;
    --sb-l-cyan-bright: #67e8f9;
    --sb-l-cyan-dim: rgba(34, 211, 238, 0.45);
    --sb-l-violet: #a78bfa;
    --sb-l-violet-dim: rgba(167, 139, 250, 0.35);
    --sb-l-bg: #020617;
    --sb-l-glass: rgba(15, 23, 42, 0.42);
    --sb-l-glass-strong: rgba(2, 6, 23, 0.55);
    --sb-l-border: rgba(255, 255, 255, 0.12);
    --sb-l-border-glow: rgba(34, 211, 238, 0.35);
    --sb-l-text: #e2e8f0;
    --sb-l-muted: #94a3b8;
    min-height: 100vh;
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--sb-l-text);
    background: var(--sb-l-bg);
    overflow-x: hidden;
    position: relative;
}

/* ---------- 星空层 ---------- */
.sb-login-sky {
    position: fixed;
    inset: 0;
    z-index: 0;
    background:
        radial-gradient(ellipse 120% 100% at 50% 120%, rgba(34, 211, 238, 0.1), transparent 55%),
        radial-gradient(ellipse 80% 60% at 80% -10%, rgba(167, 139, 250, 0.08), transparent 45%),
        linear-gradient(180deg, #020617 0%, #0a0f1a 40%, #020617 100%);
    pointer-events: none;
}

.sb-stars {
    position: absolute;
    inset: 0;
    opacity: 0.85;
}

.sb-stars--1 {
    background-image:
        radial-gradient(1px 1px at 8% 12%, rgba(255, 255, 255, 0.95), transparent),
        radial-gradient(1px 1px at 22% 8%, rgba(255, 255, 255, 0.7), transparent),
        radial-gradient(1px 1px at 35% 18%, rgba(255, 255, 255, 0.55), transparent),
        radial-gradient(1px 1px at 48% 6%, rgba(255, 255, 255, 0.9), transparent),
        radial-gradient(1px 1px at 62% 14%, rgba(255, 255, 255, 0.5), transparent),
        radial-gradient(1px 1px at 78% 10%, rgba(255, 255, 255, 0.75), transparent),
        radial-gradient(1px 1px at 92% 16%, rgba(255, 255, 255, 0.6), transparent),
        radial-gradient(1px 1px at 15% 28%, rgba(255, 255, 255, 0.65), transparent),
        radial-gradient(1px 1px at 40% 32%, rgba(255, 255, 255, 0.85), transparent),
        radial-gradient(1px 1px at 55% 26%, rgba(255, 255, 255, 0.45), transparent),
        radial-gradient(1px 1px at 70% 30%, rgba(255, 255, 255, 0.7), transparent),
        radial-gradient(1px 1px at 88% 28%, rgba(255, 255, 255, 0.55), transparent),
        radial-gradient(1px 1px at 10% 45%, rgba(255, 255, 255, 0.5), transparent),
        radial-gradient(1px 1px at 28% 48%, rgba(255, 255, 255, 0.8), transparent),
        radial-gradient(1px 1px at 50% 42%, rgba(255, 255, 255, 0.6), transparent),
        radial-gradient(1px 1px at 72% 46%, rgba(255, 255, 255, 0.9), transparent),
        radial-gradient(1px 1px at 95% 44%, rgba(255, 255, 255, 0.5), transparent),
        radial-gradient(1px 1px at 18% 62%, rgba(255, 255, 255, 0.7), transparent),
        radial-gradient(1px 1px at 42% 58%, rgba(255, 255, 255, 0.55), transparent),
        radial-gradient(1px 1px at 65% 64%, rgba(255, 255, 255, 0.85), transparent),
        radial-gradient(1px 1px at 85% 60%, rgba(255, 255, 255, 0.5), transparent),
        radial-gradient(1px 1px at 12% 78%, rgba(255, 255, 255, 0.65), transparent),
        radial-gradient(1px 1px at 38% 82%, rgba(255, 255, 255, 0.45), transparent),
        radial-gradient(1px 1px at 58% 76%, rgba(255, 255, 255, 0.75), transparent),
        radial-gradient(1px 1px at 80% 80%, rgba(255, 255, 255, 0.55), transparent),
        radial-gradient(1px 1px at 95% 88%, rgba(255, 255, 255, 0.9), transparent),
        radial-gradient(2px 2px at 25% 52%, rgba(34, 211, 238, 0.5), transparent),
        radial-gradient(2px 2px at 60% 20%, rgba(167, 139, 250, 0.4), transparent),
        radial-gradient(2px 2px at 82% 72%, rgba(34, 211, 238, 0.35), transparent);
    background-size: 100% 100%;
    animation: sb-login-twinkle-a 5.5s ease-in-out infinite alternate;
}

.sb-stars--2 {
    background-image:
        radial-gradient(1px 1px at 5% 35%, rgba(255, 255, 255, 0.6), transparent),
        radial-gradient(1px 1px at 30% 22%, rgba(255, 255, 255, 0.45), transparent),
        radial-gradient(1px 1px at 52% 36%, rgba(255, 255, 255, 0.8), transparent),
        radial-gradient(1px 1px at 68% 18%, rgba(255, 255, 255, 0.5), transparent),
        radial-gradient(1px 1px at 90% 38%, rgba(255, 255, 255, 0.7), transparent),
        radial-gradient(1px 1px at 14% 55%, rgba(255, 255, 255, 0.55), transparent),
        radial-gradient(1px 1px at 44% 68%, rgba(255, 255, 255, 0.85), transparent),
        radial-gradient(1px 1px at 76% 54%, rgba(255, 255, 255, 0.5), transparent),
        radial-gradient(1px 1px at 8% 88%, rgba(255, 255, 255, 0.65), transparent),
        radial-gradient(1px 1px at 48% 92%, rgba(255, 255, 255, 0.5), transparent),
        radial-gradient(1px 1px at 92% 62%, rgba(255, 255, 255, 0.75), transparent);
    background-size: 100% 100%;
    animation: sb-login-twinkle-b 7s ease-in-out infinite alternate;
}

.sb-stars--3 {
    background-image:
        radial-gradient(1px 1px at 18% 14%, rgba(255, 255, 255, 0.9), transparent),
        radial-gradient(1px 1px at 66% 8%, rgba(255, 255, 255, 0.4), transparent),
        radial-gradient(1px 1px at 44% 48%, rgba(255, 255, 255, 0.65), transparent),
        radial-gradient(1px 1px at 22% 72%, rgba(255, 255, 255, 0.5), transparent),
        radial-gradient(1px 1px at 88% 48%, rgba(255, 255, 255, 0.8), transparent),
        radial-gradient(1px 1px at 54% 88%, rgba(255, 255, 255, 0.55), transparent);
    background-size: 100% 100%;
    animation: sb-login-twinkle-c 4s ease-in-out infinite alternate;
}

@keyframes sb-login-twinkle-a {
    0% {
        opacity: 0.45;
    }
    100% {
        opacity: 1;
    }
}

@keyframes sb-login-twinkle-b {
    0% {
        opacity: 0.35;
    }
    100% {
        opacity: 0.9;
    }
}

@keyframes sb-login-twinkle-c {
    0% {
        opacity: 0.2;
        transform: scale(1);
    }
    100% {
        opacity: 0.85;
        transform: scale(1.02);
    }
}

/* 细网格 */
.sb-login-grid {
    position: fixed;
    inset: 0;
    z-index: 1;
    background-image:
        linear-gradient(rgba(34, 211, 238, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(34, 211, 238, 0.05) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse 75% 70% at 50% 45%, #000 18%, transparent 72%);
    pointer-events: none;
    animation: sb-login-grid-drift 24s linear infinite;
}

@keyframes sb-login-grid-drift {
    0% {
        background-position: 0 0, 0 0;
    }
    100% {
        background-position: 48px 48px, 48px 48px;
    }
}

/* 极光色块（可由脚本轻微视差平移） */
.sb-login-aurora {
    position: fixed;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    overflow: hidden;
    transition: transform 0.5s ease-out;
    will-change: transform;
}

.sb-aurora {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.45;
    mix-blend-mode: screen;
}

.sb-aurora--a {
    width: min(55vw, 420px);
    height: min(55vw, 420px);
    left: -10%;
    top: 15%;
    background: radial-gradient(circle, rgba(34, 211, 238, 0.5), transparent 70%);
    animation: sb-login-aurora-a 14s ease-in-out infinite;
}

.sb-aurora--b {
    width: min(60vw, 480px);
    height: min(60vw, 480px);
    right: -15%;
    bottom: 5%;
    background: radial-gradient(circle, rgba(167, 139, 250, 0.45), transparent 70%);
    animation: sb-login-aurora-b 18s ease-in-out infinite;
}

.sb-aurora--c {
    width: min(45vw, 360px);
    height: min(45vw, 360px);
    left: 35%;
    bottom: 25%;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.35), transparent 65%);
    animation: sb-login-aurora-c 12s ease-in-out infinite;
}

@keyframes sb-login-aurora-a {
    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }
    50% {
        transform: translate(8%, -6%) scale(1.08);
    }
}

@keyframes sb-login-aurora-b {
    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }
    50% {
        transform: translate(-10%, 8%) scale(1.12);
    }
}

@keyframes sb-login-aurora-c {
    0%,
    100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.35;
    }
    50% {
        transform: translate(-5%, -12%) scale(1.15);
        opacity: 0.55;
    }
}

/* 悬浮光球（随 JS 视差微调） */
.sb-login-orbs {
    position: fixed;
    inset: 0;
    z-index: 1;
    pointer-events: none;
}

.sb-orb {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.12), transparent 55%);
    box-shadow:
        inset 0 0 40px rgba(34, 211, 238, 0.06),
        0 0 60px rgba(34, 211, 238, 0.08);
}

.sb-orb--1 {
    width: clamp(120px, 22vw, 200px);
    height: clamp(120px, 22vw, 200px);
    left: 8%;
    top: 22%;
    animation: sb-login-orb-float 9s ease-in-out infinite;
}

.sb-orb--2 {
    width: clamp(100px, 18vw, 170px);
    height: clamp(100px, 18vw, 170px);
    right: 10%;
    top: 48%;
    animation: sb-login-orb-float 11s ease-in-out infinite reverse;
}

@keyframes sb-login-orb-float {
    0%,
    100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-12px);
    }
}

/* 扫描线 */
.sb-login-scan {
    position: fixed;
    inset: 0;
    z-index: 2;
    pointer-events: none;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 0, 0, 0.03) 2px,
        rgba(0, 0, 0, 0.03) 4px
    );
    mask-image: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.35) 50%, transparent 100%);
    mask-size: 100% 120px;
    mask-repeat: no-repeat;
    animation: sb-login-scan-move 7s linear infinite;
    opacity: 0.6;
}

@keyframes sb-login-scan-move {
    0% {
        mask-position: 0 -30%;
    }
    100% {
        mask-position: 0 130%;
    }
}

/* 细微噪点 */
.sb-login-noise {
    position: fixed;
    inset: 0;
    z-index: 2;
    pointer-events: none;
    opacity: 0.04;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- 主内容（Bootstrap 栅格内） ---------- */
.sb-login-main {
    position: relative;
    z-index: 3;
}

.sb-login-stack {
    max-width: 440px;
    animation: sb-login-stack-in 0.85s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes sb-login-stack-in {
    0% {
        opacity: 0;
        transform: translateY(20px) scale(0.98);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.sb-login-brand {
    margin-bottom: clamp(1.25rem, 4vw, 1.85rem);
}

.sb-login-brand-badge {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    padding: 0.4rem 0.9rem;
    border-radius: 999px;
    border: 1px solid var(--sb-l-cyan-dim);
    color: var(--sb-l-cyan-bright);
    background: rgba(34, 211, 238, 0.12);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    margin-bottom: 0.85rem;
    box-shadow:
        0 0 24px rgba(34, 211, 238, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

.sb-login-brand-badge--pulse {
    animation: sb-login-badge-pulse 3s ease-in-out infinite;
}

@keyframes sb-login-badge-pulse {
    0%,
    100% {
        box-shadow:
            0 0 20px rgba(34, 211, 238, 0.12),
            inset 0 1px 0 rgba(255, 255, 255, 0.1);
    }
    50% {
        box-shadow:
            0 0 32px rgba(34, 211, 238, 0.28),
            inset 0 1px 0 rgba(255, 255, 255, 0.18);
    }
}

.sb-login-title-glow {
    margin: 0 0 0.5rem;
    font-size: clamp(1.4rem, 4.5vw, 1.95rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    background: linear-gradient(120deg, #f8fafc 0%, var(--sb-l-cyan) 42%, var(--sb-l-violet) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    filter: drop-shadow(0 0 28px rgba(34, 211, 238, 0.25));
}

.sb-login-lead {
    margin: 0 auto;
    font-size: clamp(0.8125rem, 2.4vw, 0.9375rem);
    color: var(--sb-l-muted);
    max-width: 24rem;
    line-height: 1.55;
}

/* 渐变描边外框（阴影呼吸，不 filter 子树） */
.sb-login-card-wrap {
    position: relative;
    border-radius: 22px;
    padding: 1px;
    background: linear-gradient(
        125deg,
        rgba(34, 211, 238, 0.65) 0%,
        rgba(167, 139, 250, 0.5) 45%,
        rgba(6, 182, 212, 0.55) 100%
    );
    background-size: 200% 200%;
    animation: sb-login-border-breathe 6s ease-in-out infinite alternate;
    box-shadow:
        0 0 0 1px rgba(255, 255, 255, 0.06),
        0 28px 90px -28px rgba(0, 0, 0, 0.85),
        0 0 80px -20px rgba(34, 211, 238, 0.16);
}

@keyframes sb-login-border-breathe {
    0% {
        background-position: 0% 50%;
        box-shadow:
            0 0 0 1px rgba(255, 255, 255, 0.06),
            0 28px 90px -28px rgba(0, 0, 0, 0.85),
            0 0 72px -22px rgba(34, 211, 238, 0.12);
    }
    100% {
        background-position: 100% 50%;
        box-shadow:
            0 0 0 1px rgba(255, 255, 255, 0.08),
            0 32px 100px -26px rgba(0, 0, 0, 0.88),
            0 0 110px -18px rgba(167, 139, 250, 0.22);
    }
}

.sb-login-card {
    position: relative;
    border-radius: 21px;
    overflow: hidden;
}

.sb-login-card--glass .sb-login-card-inner {
    border-radius: 20px;
    background: linear-gradient(
        145deg,
        rgba(255, 255, 255, 0.08) 0%,
        var(--sb-l-glass) 40%,
        rgba(2, 6, 23, 0.65) 100%
    );
    backdrop-filter: blur(22px) saturate(160%);
    -webkit-backdrop-filter: blur(22px) saturate(160%);
    border: 1px solid var(--sb-l-border);
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.14),
        inset 0 -1px 0 rgba(0, 0, 0, 0.2),
        0 20px 50px rgba(0, 0, 0, 0.35);
    padding: clamp(1.35rem, 4vw, 1.85rem) clamp(1.15rem, 4vw, 1.65rem) clamp(1.35rem, 4vw, 1.55rem);
}

.sb-login-card-shimmer {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: linear-gradient(
        105deg,
        transparent 40%,
        rgba(255, 255, 255, 0.06) 50%,
        transparent 60%
    );
    background-size: 200% 100%;
    animation: sb-login-shimmer 4.5s ease-in-out infinite;
    z-index: 0;
}

@keyframes sb-login-shimmer {
    0% {
        background-position: 120% 0;
    }
    100% {
        background-position: -120% 0;
    }
}

.sb-login-card-inner {
    position: relative;
    z-index: 1;
}

.sb-login-card::before {
    content: "";
    position: absolute;
    left: 1.25rem;
    right: 1.25rem;
    top: 0;
    height: 1px;
    border-radius: 2px;
    background: linear-gradient(90deg, transparent, var(--sb-l-cyan), var(--sb-l-violet), transparent);
    opacity: 0.85;
    pointer-events: none;
    z-index: 2;
    animation: sb-login-top-glow 2.8s ease-in-out infinite alternate;
}

@keyframes sb-login-top-glow {
    0% {
        opacity: 0.45;
        filter: blur(0);
    }
    100% {
        opacity: 1;
        filter: blur(0.5px);
    }
}

.sb-login-msg {
    display: none;
    margin-bottom: 1rem;
    padding: 0.65rem 0.85rem;
    border-radius: 12px;
    font-size: 0.8125rem;
    line-height: 1.45;
    border: 1px solid rgba(248, 113, 113, 0.35);
    background: rgba(127, 29, 29, 0.4);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: #fecaca;
}

.sb-login-msg.is-visible {
    display: block;
    animation: sb-login-msg-in 0.35s ease both;
}

@keyframes sb-login-msg-in {
    from {
        opacity: 0;
        transform: translateY(-6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.sb-login-msg.is-success {
    border-color: rgba(52, 211, 153, 0.4);
    background: rgba(6, 78, 59, 0.4);
    color: #a7f3d0;
}

.sb-login-field {
    margin-bottom: 1.1rem;
}

.sb-login-field label {
    display: block;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--sb-l-muted);
    margin-bottom: 0.4rem;
}

.sb-login-field input {
    width: 100%;
    padding: 0.7rem 0.95rem;
    font-size: clamp(0.875rem, 2.5vw, 0.9375rem);
    color: var(--sb-l-text);
    background: rgba(2, 6, 23, 0.35);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(148, 163, 184, 0.22);
    border-radius: 12px;
    outline: none;
    transition:
        border-color 0.25s ease,
        box-shadow 0.25s ease,
        background 0.25s ease,
        transform 0.2s ease;
}

.sb-login-field input::placeholder {
    color: rgba(148, 163, 184, 0.55);
}

.sb-login-field input:hover {
    border-color: rgba(148, 163, 184, 0.35);
    background: rgba(2, 6, 23, 0.42);
}

.sb-login-field input:focus {
    border-color: var(--sb-l-border-glow);
    box-shadow:
        0 0 0 3px rgba(34, 211, 238, 0.14),
        0 0 28px rgba(34, 211, 238, 0.12);
    background: rgba(2, 6, 23, 0.5);
}

.sb-login-submit {
    position: relative;
    width: 100%;
    margin-top: 0.35rem;
    padding: 0.8rem 1rem;
    font-size: 0.9375rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    color: #020617;
    border: none;
    border-radius: 14px;
    cursor: pointer;
    overflow: hidden;
    background: linear-gradient(135deg, var(--sb-l-cyan-bright) 0%, var(--sb-l-cyan) 35%, #0891b2 100%);
    box-shadow:
        0 4px 28px rgba(34, 211, 238, 0.35),
        inset 0 1px 0 rgba(255, 255, 255, 0.35);
    transition:
        transform 0.2s ease,
        filter 0.2s ease,
        opacity 0.2s ease,
        box-shadow 0.2s ease;
}

.sb-login-submit-label {
    position: relative;
    z-index: 1;
}

.sb-login-submit-glow {
    position: absolute;
    inset: -50%;
    background: conic-gradient(from 0deg, transparent, rgba(255, 255, 255, 0.35), transparent 40%);
    animation: sb-login-btn-glow 3s linear infinite;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.sb-login-submit:hover:not(:disabled) .sb-login-submit-glow {
    opacity: 0.45;
}

@keyframes sb-login-btn-glow {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

.sb-login-submit:hover:not(:disabled) {
    filter: brightness(1.06);
    transform: translateY(-2px);
    box-shadow:
        0 8px 36px rgba(34, 211, 238, 0.45),
        inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.sb-login-submit:active:not(:disabled) {
    transform: translateY(0);
}

.sb-login-submit:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.sb-login-divider {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin: 1.15rem 0 0.85rem;
    color: rgba(148, 163, 184, 0.55);
    font-size: 0.75rem;
    letter-spacing: 0.12em;
}

.sb-login-divider::before,
.sb-login-divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(148, 163, 184, 0.25), transparent);
}

.sb-login-wechat {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.72rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    color: #ecfdf5;
    border-radius: 14px;
    border: 1px solid rgba(16, 185, 129, 0.45);
    background: rgba(6, 78, 59, 0.35);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    cursor: pointer;
    transition:
        transform 0.2s ease,
        border-color 0.2s ease,
        box-shadow 0.2s ease,
        opacity 0.2s ease;
}

.sb-login-wechat:hover:not(:disabled) {
    border-color: rgba(52, 211, 153, 0.65);
    box-shadow: 0 0 28px rgba(16, 185, 129, 0.2);
    transform: translateY(-1px);
}

.sb-login-wechat:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.sb-login-wechat-icon {
    width: 1.15rem;
    height: 1.15rem;
    border-radius: 0.25rem;
    background: linear-gradient(145deg, #34d399, #059669);
    box-shadow: 0 0 12px rgba(52, 211, 153, 0.35);
}

.sb-login-hint {
    margin-top: 1.15rem;
    font-size: clamp(0.7rem, 2vw, 0.75rem);
    line-height: 1.55;
    color: var(--sb-l-muted);
}

.sb-login-hint code {
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 0.8em;
    padding: 0.12rem 0.4rem;
    border-radius: 6px;
    background: rgba(34, 211, 238, 0.12);
    border: 1px solid rgba(34, 211, 238, 0.2);
    color: var(--sb-l-cyan-bright);
}

.sb-login-footer {
    margin-top: clamp(1.75rem, 5vw, 2.5rem);
    font-size: 0.68rem;
    color: rgba(148, 163, 184, 0.5);
    letter-spacing: 0.08em;
}

/* 减弱动效 */
@media (prefers-reduced-motion: reduce) {
    .sb-stars--1,
    .sb-stars--2,
    .sb-stars--3,
    .sb-login-grid,
    .sb-aurora--a,
    .sb-aurora--b,
    .sb-aurora--c,
    .sb-orb--1,
    .sb-orb--2,
    .sb-login-scan,
    .sb-login-card-shimmer,
    .sb-login-card-wrap,
    .sb-login-brand-badge--pulse,
    .sb-login-submit-glow,
    .sb-login-card::before {
        animation: none !important;
    }

    .sb-login-stack {
        animation: none;
    }

    .sb-login-aurora {
        transition: none;
        transform: none !important;
    }
}

/* 小屏收紧 */
@media (max-width: 380px) {
    .sb-login-card--glass .sb-login-card-inner {
        padding: 1.25rem 1rem 1.15rem;
    }
}