/* ===== RESET ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box
}

:root {
    --bg: #0B1020;
    --bg-surface: #111827;
    --bg-card: rgba(17, 24, 39, .6);
    --glass: rgba(255, 255, 255, .04);
    --glass-border: rgba(255, 255, 255, .08);
    --blue: #2563EB;
    --purple: #7C3AED;
    --cyan: #06B6D4;
    --text-primary: #F1F5F9;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;
    --radius: 16px;
    --radius-lg: 24px;
    --radius-sm: 10px;
    --font-sans: -apple-system, "Microsoft YaHei", BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

html {
    scroll-behavior: smooth;
    font-size: 16px
}

body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased
}

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

img {
    max-width: 100%;
    display: block
}

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px
}

@media (max-width: 768px) {
    .container {
        padding: 0 16px
    }
}

/* ===== LOADER ===== */
.loader {
    position: fixed;
    inset: 0;
    background: var(--bg);
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 24px;
    transition: opacity .6s ease, visibility .6s ease
}

.loader.hide {
    opacity: 0;
    visibility: hidden;
    pointer-events: none
}

.loader-logo {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--blue), var(--purple), var(--cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: loaderPulse 1.2s ease-in-out infinite
}

.loader-bar {
    width: 180px;
    height: 3px;
    border-radius: 3px;
    background: rgba(255, 255, 255, .08);
    overflow: hidden
}

.loader-bar-inner {
    width: 0;
    height: 100%;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--blue), var(--purple), var(--cyan));
    animation: loaderFill 1.2s ease forwards
}

@keyframes loaderPulse {
    0%, 100% {
        opacity: 1
    }
    50% {
        opacity: .5
    }
}

@keyframes loaderFill {
    0% {
        width: 0
    }
    100% {
        width: 100%
    }
}

/* ===== SCROLL PROGRESS ===== */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--blue), var(--purple), var(--cyan));
    z-index: 10001;
    width: 0;
    transition: width .1s linear;
    pointer-events: none
}

/* ===== NAV ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 0 24px;
    transition: all .35s ease
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px
}

.nav.scrolled {
    background: rgba(11, 16, 32, .92);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    box-shadow: 0 1px 0 rgba(255, 255, 255, .05), 0 8px 32px rgba(0, 0, 0, .3)
}

.nav-logo {
    font-size: 1.25rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--blue), var(--purple), var(--cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -.02em;
    cursor: pointer
}

.nav-links {
    display: flex;
    gap: 4px;
    list-style: none
}

.nav-links a {
    padding: 8px 14px;
    border-radius: 8px;
    font-size: .85rem;
    color: var(--text-secondary);
    transition: all .25s ease;
    cursor: pointer;
    white-space: nowrap
}

.nav-links a:hover, .nav-links a.active {
    color: var(--text-primary);
    background: rgba(255, 255, 255, .07)
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px
}

.hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all .3s ease
}

.hamburger.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px)
}

.hamburger.open span:nth-child(2) {
    opacity: 0
}

.hamburger.open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px)
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(11, 16, 32, .97);
    backdrop-filter: blur(24px);
    z-index: 999;
    padding: 32px 24px;
    overflow-y: auto
}

.mobile-menu.open {
    display: block;
    animation: mFadeIn .3s ease
}

.mobile-menu a {
    display: block;
    padding: 16px 0;
    font-size: 1.125rem;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(255, 255, 255, .05);
    transition: color .2s;
    cursor: pointer
}

.mobile-menu a:hover, .mobile-menu a.active {
    color: var(--text-primary)
}

@media (max-width: 900px) {
    .nav-links {
        display: none
    }

    .hamburger {
        display: flex
    }
}

/* ===== HERO ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding: 120px 0 80px
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0
}

.hero-bg .grid-overlay {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(255, 255, 255, .03) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .03) 1px, transparent 1px);
    background-size: 60px 60px
}

.hero-bg .glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    pointer-events: none
}

.hero-bg .glow-1 {
    top: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(37, 99, 235, .15), transparent 70%);
    animation: gFloat 8s ease-in-out infinite
}

.hero-bg .glow-2 {
    bottom: -10%;
    left: -5%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(124, 58, 237, .12), transparent 70%);
    animation: gFloat 10s ease-in-out infinite reverse
}

.hero-bg .glow-3 {
    top: 30%;
    left: 40%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(6, 182, 212, .1), transparent 70%);
    animation: gFloat 12s ease-in-out infinite 2s
}

@keyframes gFloat {
    0%, 100% {
        transform: translateY(0) scale(1)
    }
    50% {
        transform: translateY(-30px) scale(1.05)
    }
}

.hero .container {
    display: grid;
    grid-template-columns:1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1
}

.hero-content {
    opacity: 0;
    animation: mFadeUp .8s ease forwards
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    border-radius: 100px;
    background: rgba(37, 99, 235, .1);
    border: 1px solid rgba(37, 99, 235, .2);
    font-size: .8rem;
    color: var(--cyan);
    margin-bottom: 24px;
    letter-spacing: .02em
}

.hero-badge .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--cyan);
    animation: mPulse 2s ease infinite
}

@keyframes mPulse {
    0%, 100% {
        opacity: 1
    }
    50% {
        opacity: .4
    }
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.25rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -.03em;
    margin-bottom: 20px
}

.hero h1 .gradient-text {
    background: linear-gradient(135deg, var(--blue), var(--purple), var(--cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% 200%;
    animation: gradShift 4s ease infinite
}

@keyframes gradShift {
    0% {
        background-position: 0% 50%
    }
    50% {
        background-position: 100% 50%
    }
    100% {
        background-position: 0% 50%
    }
}

.hero p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin-bottom: 36px;
    line-height: 1.7
}

.hero-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 12px;
    font-weight: 600;
    font-size: .95rem;
    cursor: pointer;
    border: none;
    transition: all .3s cubic-bezier(.16, 1, .3, 1);
    position: relative;
    overflow: hidden
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, .1), transparent);
    opacity: 0;
    transition: opacity .3s
}

.btn:hover::after {
    opacity: 1
}

.btn-primary {
    background: linear-gradient(135deg, var(--blue), var(--purple));
    color: #fff;
    box-shadow: 0 4px 24px rgba(37, 99, 235, .3)
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(37, 99, 235, .45)
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(8px)
}

.btn-outline:hover {
    border-color: var(--blue);
    background: rgba(37, 99, 235, .08);
    transform: translateY(-2px)
}

.hero-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    opacity: 0;
    animation: mFadeUp 1s ease .2s forwards
}

.hero-visual .tech-sphere {
    width: 100%;
    max-width: 480px;
    aspect-ratio: 1;
    position: relative
}

.hero-visual .orbit {
    position: absolute;
    border: 1px solid rgba(255, 255, 255, .06);
    border-radius: 50%;
    animation: mSpin 20s linear infinite
}

.hero-visual .orbit-1 {
    inset: 10%;
    animation-duration: 25s
}

.hero-visual .orbit-2 {
    inset: 22%;
    animation-duration: 18s;
    animation-direction: reverse
}

.hero-visual .orbit-3 {
    inset: 34%;
    animation-duration: 30s
}

.hero-visual .orbit::before {
    content: '';
    position: absolute;
    top: -4px;
    left: 50%;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--cyan);
    box-shadow: 0 0 16px var(--cyan)
}

.hero-visual .orbit-2::before {
    background: var(--purple);
    box-shadow: 0 0 16px var(--purple)
}

.hero-visual .orbit-3::before {
    background: var(--blue);
    box-shadow: 0 0 16px var(--blue)
}

@keyframes mSpin {
    from {
        transform: rotate(0)
    }
    to {
        transform: rotate(360deg)
    }
}

.hero-visual .center-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    border-radius: 20px;
    background: linear-gradient(135deg, var(--blue), var(--purple));
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 60px rgba(37, 99, 235, .3);
    z-index: 2;
    animation: mFloatSlow 4s ease-in-out infinite
}

@keyframes mFloatSlow {
    0%, 100% {
        transform: translate(-50%, -50%) translateY(0)
    }
    50% {
        transform: translate(-50%, -50%) translateY(-12px)
    }
}

.hero-visual .particle {
    position: absolute;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--text-muted);
    animation: mParticle 6s ease-in-out infinite
}

@keyframes mParticle {
    0%, 100% {
        opacity: .3;
        transform: translateY(0)
    }
    50% {
        opacity: 1;
        transform: translateY(-20px)
    }
}

@media (max-width: 900px) {
    .hero .container {
        grid-template-columns:1fr;
        text-align: center
    }

    .hero p {
        margin-left: auto;
        margin-right: auto
    }

    .hero-buttons {
        justify-content: center
    }

    .hero-visual {
        order: -1;
        max-width: 300px;
        margin: 0 auto
    }
}

/* ===== TRUST ===== */
.trust-bar {
    padding: 48px 0;
    position: relative
}

.trust-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--glass-border), transparent)
}

.trust-grid {
    display: grid;
    grid-template-columns:repeat(4, 1fr);
    gap: 24px
}

.trust-item {
    text-align: center;
    padding: 24px 16px;
    border-radius: var(--radius);
    background: var(--glass);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(8px);
    transition: all .4s cubic-bezier(.16, 1, .3, 1)
}

.trust-item:hover {
    border-color: rgba(37, 99, 235, .25);
    transform: translateY(-4px)
}

.trust-item .number {
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--blue), var(--cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 4px
}

.trust-item .label {
    font-size: .85rem;
    color: var(--text-muted)
}

.trust-item .note {
    font-size: .7rem;
    color: var(--text-muted);
    opacity: .6;
    margin-top: 2px
}

.trust-item svg {
    width: 30px;
}

@media (max-width: 600px) {
    .trust-grid {
        grid-template-columns:repeat(2, 1fr)
    }
}

/* ===== SECTION COMMON ===== */
section {
    padding: 100px 0
}

.section-header {
    text-align: center;
    margin-bottom: 56px
}

.section-tag {
    display: inline-block;
    padding: 5px 14px;
    border-radius: 100px;
    background: rgba(37, 99, 235, .08);
    border: 1px solid rgba(37, 99, 235, .15);
    font-size: .75rem;
    color: var(--cyan);
    letter-spacing: .06em;
    text-transform: uppercase;
    margin-bottom: 16px
}

.section-header h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    letter-spacing: -.02em;
    margin-bottom: 12px
}

.section-header p {
    color: var(--text-secondary);
    max-width: 560px;
    margin: 0 auto;
    font-size: 1rem
}

/* ===== BENTO ===== */
.bento-grid {
    display: grid;
    grid-template-columns:repeat(3, 1fr);
    gap: 16px
}

.bento-card {
    padding: 32px;
    border-radius: var(--radius-lg);
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(12px);
    transition: all .45s cubic-bezier(.16, 1, .3, 1);
    position: relative;
    overflow: hidden
}

.bento-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--blue), var(--purple), var(--cyan));
    opacity: 0;
    transition: opacity .3s
}

.bento-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at var(--mx, 50%) var(--my, 50%), rgba(37, 99, 235, .06), transparent 60%);
    opacity: 0;
    transition: opacity .3s;
    pointer-events: none
}

.bento-card:hover {
    border-color: rgba(37, 99, 235, .2);
    transform: translateY(-6px);
    box-shadow: 0 24px 60px rgba(0, 0, 0, .3)
}

.bento-card:hover::before {
    opacity: 1
}

.bento-card:hover::after {
    opacity: 1
}

.bento-card.featured {
    grid-column: span 2
}

.bento-card .card-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    transition: transform .3s
}

.bento-card:hover .card-icon {
    transform: scale(1.1) rotate(-5deg)
}

.bento-card .card-icon svg {
    width: 24px;
    height: 24px
}

.bento-card .card-icon.blue {
    background: rgba(37, 99, 235, .12);
    color: var(--blue)
}

.bento-card .card-icon.purple {
    background: rgba(124, 58, 237, .12);
    color: var(--purple)
}

.bento-card .card-icon.cyan {
    background: rgba(6, 182, 212, .12);
    color: var(--cyan)
}

.bento-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px
}

.bento-card p {
    color: var(--text-secondary);
    font-size: .9rem;
    line-height: 1.65;
    margin-bottom: 16px
}

.bento-card .tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px
}

.bento-card .tag {
    padding: 4px 10px;
    border-radius: 6px;
    background: rgba(255, 255, 255, .04);
    border: 1px solid rgba(255, 255, 255, .06);
    font-size: .75rem;
    color: var(--text-muted);
    transition: all .2s
}

.bento-card .tag:hover {
    border-color: rgba(37, 99, 235, .2);
    color: var(--text-secondary)
}

@media (max-width: 900px) {
    .bento-grid {
        grid-template-columns:1fr 1fr
    }

    .bento-card.featured {
        grid-column: span 2
    }
}

@media (max-width: 600px) {
    .bento-grid {
        grid-template-columns:1fr
    }

    .bento-card.featured {
        grid-column: span 1
    }
}

/* ===== TECH ===== */
.tech-section {
    background: linear-gradient(180deg, var(--bg) 0%, var(--bg-surface) 50%, var(--bg) 100%)
}

.tech-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    max-width: 800px;
    margin: 0 auto
}

.tech-tag {
    padding: 10px 20px;
    border-radius: 100px;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    font-size: .875rem;
    color: var(--text-secondary);
    transition: all .35s cubic-bezier(.16, 1, .3, 1);
    cursor: default;
    position: relative;
    overflow: hidden
}

.tech-tag::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(37, 99, 235, .15), rgba(124, 58, 237, .15));
    opacity: 0;
    transition: opacity .3s
}

.tech-tag:hover {
    border-color: var(--blue);
    color: var(--text-primary);
    transform: translateY(-3px) scale(1.05)
}

.tech-tag:hover::after {
    opacity: 1
}

.tech-tag.highlight {
    border-color: rgba(37, 99, 235, .3);
    color: var(--text-primary);
    background: rgba(37, 99, 235, .1)
}

/* ===== CASES ===== */
.case-filters {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-bottom: 40px;
    flex-wrap: wrap
}

.filter-btn {
    padding: 10px 20px;
    border-radius: 100px;
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: .85rem;
    transition: all .25s ease
}

.filter-btn:hover, .filter-btn.active {
    background: rgba(37, 99, 235, .1);
    border-color: var(--blue);
    color: var(--text-primary)
}

.cases-grid {
    display: grid;
    grid-template-columns:repeat(3, 1fr);
    gap: 20px
}

.case-card {
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    transition: all .45s cubic-bezier(.16, 1, .3, 1)
}

.case-card.hidden {
    display: none
}

.case-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 24px 64px rgba(0, 0, 0, .35);
    border-color: rgba(37, 99, 235, .2)
}

.case-thumb {
    height: 200px;
    position: relative;
    overflow: hidden
}

.case-thumb .gradient-bg {
    width: 100%;
    height: 100%;
    transition: transform .6s
}

.case-card:hover .gradient-bg {
    transform: scale(1.05)
}

.case-thumb .gradient-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 60%, var(--bg-card))
}

.case-card .case-overlay {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 4px 10px;
    border-radius: 6px;
    background: rgba(0, 0, 0, .5);
    backdrop-filter: blur(8px);
    font-size: .7rem;
    color: var(--text-secondary);
    z-index: 1
}

.case-info {
    padding: 24px
}

.case-info h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px
}

.case-info .desc {
    font-size: .85rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
    line-height: 1.6
}

.case-info .case-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 16px
}

.case-info .case-tag {
    padding: 3px 8px;
    border-radius: 4px;
    font-size: .7rem
}

.case-tag.service {
    background: rgba(37, 99, 235, .1);
    color: var(--blue);
    border: 1px solid rgba(37, 99, 235, .15)
}

.case-tag.tech {
    background: rgba(124, 58, 237, .1);
    color: var(--purple);
    border: 1px solid rgba(124, 58, 237, .15)
}

.case-info .case-placeholder {
    font-size: .7rem;
    color: var(--text-muted);
    font-style: italic;
    margin-bottom: 12px
}

.case-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: .85rem;
    color: var(--cyan);
    font-weight: 600;
    transition: gap .2s ease;
    cursor: pointer
}

.case-link:hover {
    gap: 12px
}

@media (max-width: 900px) {
    .cases-grid {
        grid-template-columns:1fr 1fr
    }
}

@media (max-width: 600px) {
    .cases-grid {
        grid-template-columns:1fr
    }
}

/* ===== PROCESS ===== */
.process-section {
    background: linear-gradient(180deg, var(--bg) 0%, var(--bg-surface) 50%, var(--bg) 100%)
}

.process-track {
    display: flex;
    gap: 0;
    position: relative;
    max-width: 1000px;
    margin: 0 auto
}

.process-track::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 40px;
    right: 40px;
    height: 2px;
    background: rgba(255, 255, 255, .05);
    z-index: 0
}

.process-track .line-fill {
    position: absolute;
    top: 40px;
    left: 40px;
    height: 2px;
    background: linear-gradient(90deg, var(--blue), var(--purple), var(--cyan));
    z-index: 1;
    width: 0;
    transition: width 1.8s cubic-bezier(.16, 1, .3, 1)
}

.process-step {
    flex: 1;
    text-align: center;
    padding: 0 12px;
    position: relative;
    z-index: 1
}

.process-step .step-num {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--bg);
    border: 2px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-weight: 800;
    font-size: .95rem;
    color: var(--text-muted);
    transition: all .4s
}

.process-step.active .step-num {
    border-color: var(--blue);
    color: var(--cyan);
    box-shadow: 0 0 24px rgba(37, 99, 235, .3)
}

.process-step h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 6px
}

.process-step p {
    font-size: .8rem;
    color: var(--text-muted);
    line-height: 1.5
}

@media (max-width: 768px) {
    .process-track {
        flex-direction: column;
        gap: 24px
    }

    .process-track::before, .process-track .line-fill {
        display: none
    }

    .process-step {
        text-align: left;
        display: flex;
        gap: 16px;
        align-items: flex-start
    }

    .process-step .step-num {
        margin: 0;
        flex-shrink: 0
    }
}

/* ===== ABOUT ===== */
.about-section {
    background: linear-gradient(180deg, var(--bg) 0%, var(--bg-surface) 50%, var(--bg) 100%)
}

.about-grid {
    display: grid;
    grid-template-columns:1.2fr 1fr;
    gap: 60px;
    align-items: center
}

.about-content h2 {
    font-size: clamp(1.75rem, 4vw, 2.25rem);
    font-weight: 800;
    margin-bottom: 20px;
    letter-spacing: -.02em
}

.about-content p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.75;
    font-size: .95rem
}

.about-content .scope-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 20px 0
}

.about-content .scope-chip {
    padding: 5px 12px;
    border-radius: 8px;
    background: rgba(255, 255, 255, .04);
    border: 1px solid var(--glass-border);
    font-size: .78rem;
    color: var(--text-muted);
    transition: all .2s
}

.about-content .scope-chip:hover {
    border-color: rgba(37, 99, 235, .3);
    color: var(--text-secondary)
}

.about-card {
    padding: 40px;
    border-radius: var(--radius-lg);
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(12px)
}

.about-card .compliance-badge {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px;
    border-radius: 12px;
    background: rgba(34, 197, 94, .08);
    border: 1px solid rgba(34, 197, 94, .15);
    margin-bottom: 20px
}

.about-card .compliance-badge svg {
    color: #22c55e;
    flex-shrink: 0
}

.about-card .compliance-badge span {
    font-size: .85rem;
    color: #22c55e;
    font-weight: 600
}

.about-card .info-item {
    display: flex;
    gap: 12px;
    padding: 14px 0;
    border-bottom: 1px solid rgba(255, 255, 255, .04)
}

.about-card .info-item:last-child {
    border: none
}

.about-card .info-item .label {
    font-size: .8rem;
    color: var(--text-muted);
    min-width: 80px;
    flex-shrink: 0
}

.about-card .info-item .value {
    font-size: .85rem;
    color: var(--text-secondary)
}

@media (max-width: 900px) {
    .about-grid {
        grid-template-columns:1fr;
        gap: 40px
    }
}

/* ===== CONTACT ===== */
.contact-grid {
    display: grid;
    grid-template-columns:1fr 1fr;
    gap: 48px
}

.contact-form {
    padding: 40px;
    border-radius: var(--radius-lg);
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(12px)
}

.form-group {
    margin-bottom: 20px;
    position: relative
}

.form-group label {
    display: block;
    font-size: .85rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-secondary)
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, .04);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    outline: none;
    transition: all .3s ease;
    font-size: .95rem
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    border-color: var(--blue);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, .15);
    background: rgba(255, 255, 255, .06)
}

.form-group textarea {
    resize: vertical;
    min-height: 120px
}

.form-group select option {
    background: var(--bg-surface);
    color: var(--text-primary)
}

.form-group .error-msg {
    font-size: .75rem;
    color: #ef4444;
    margin-top: 6px;
    display: none;
    animation: mFadeIn .3s ease
}

.form-group.error input, .form-group.error textarea {
    border-color: #ef4444;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, .15)
}

.form-group.error .error-msg {
    display: block
}

.form-row {
    display: grid;
    grid-template-columns:1fr 1fr;
    gap: 16px
}

@media (max-width: 600px) {
    .form-row {
        grid-template-columns:1fr
    }
}

.form-submit {
    width: 100%;
    padding: 16px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--blue), var(--purple));
    color: #fff;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    transition: all .3s cubic-bezier(.16, 1, .3, 1)
}

.form-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(37, 99, 235, .35)
}

.form-submit:active {
    transform: translateY(0)
}

.form-submit:disabled {
    opacity: .6;
    cursor: not-allowed;
    transform: none
}

.form-submit .spinner {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, .3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: mSpin .6s linear infinite;
    vertical-align: middle;
    margin-right: 8px
}

.form-submit.loading .spinner {
    display: inline-block
}

.form-submit.loading .btn-text {
    opacity: .7
}

.form-note {
    font-size: .75rem;
    color: var(--text-muted);
    text-align: center;
    margin-top: 12px
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px
}

.info-card {
    padding: 24px;
    border-radius: var(--radius);
    background: var(--glass);
    border: 1px solid var(--glass-border);
    display: flex;
    gap: 16px;
    align-items: flex-start;
    transition: all .35s cubic-bezier(.16, 1, .3, 1)
}

.info-card:hover {
    border-color: rgba(37, 99, 235, .2);
    transform: translateY(-3px) translateX(4px)
}

.info-card .info-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(37, 99, 235, .1);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: transform .3s
}

.info-card:hover .info-icon {
    transform: scale(1.1)
}

.info-card .info-icon svg {
    width: 20px;
    height: 20px;
    color: var(--blue)
}

.info-card .info-label {
    font-size: .75rem;
    color: var(--text-muted);
    margin-bottom: 2px
}

.info-card .info-value {
    font-size: .95rem;
    color: var(--text-primary);
    font-weight: 600
}

@media (max-width: 768px) {
    .contact-grid {
        grid-template-columns:1fr
    }
}

/* ===== FOOTER ===== */
.footer {
    padding: 60px 0 30px;
    border-top: 1px solid var(--glass-border)
}

.footer-grid {
    display: grid;
    grid-template-columns:2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px
}

.footer-brand .footer-logo {
    font-size: 1.25rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--blue), var(--purple), var(--cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 12px
}

.footer-brand p {
    font-size: .85rem;
    color: var(--text-muted);
    line-height: 1.65;
    max-width: 280px
}

.footer-col h4 {
    font-size: .9rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-secondary)
}

.footer-col a {
    display: block;
    font-size: .85rem;
    color: var(--text-muted);
    padding: 4px 0;
    transition: all .2s;
    cursor: pointer
}

.footer-col a:hover {
    color: var(--text-primary);
    padding-left: 6px
}

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, .04);
    text-align: center
}

.footer-bottom p {
    font-size: .75rem;
    color: var(--text-muted);
    line-height: 1.8
}

.footer-bottom .compliance-text {
    margin-top: 4px;
    font-size: .7rem;
    color: var(--text-muted);
    opacity: .7
}

.footer-bottom p.beian-line {
    white-space: nowrap;
}

.footer-bottom .gongan {
    display: inline-flex;
    align-items: center;
    vertical-align: middle;
}

.footer-bottom .gongan img {
    display: inline-block;
    width: 14px;
    height: 14px;
    margin-right: 4px;
    vertical-align: middle;
    position: relative;
    top: -1px;
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns:1fr 1fr;
        gap: 24px
    }
}

@media (max-width: 480px) {
    .footer-grid {
        grid-template-columns:1fr
    }
}

/* ===== BACK TOP ===== */
.back-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--blue), var(--purple));
    border: none;
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: translateY(20px);
    transition: all .35s cubic-bezier(.16, 1, .3, 1);
    z-index: 900;
    box-shadow: 0 4px 24px rgba(37, 99, 235, .3)
}

.back-top.show {
    opacity: 1;
    transform: translateY(0)
}

.back-top:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 8px 32px rgba(37, 99, 235, .45)
}

/* ===== TOAST ===== */
.toast {
    position: fixed;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    padding: 16px 28px;
    border-radius: 12px;
    backdrop-filter: blur(12px);
    color: #fff;
    font-weight: 600;
    font-size: .9rem;
    z-index: 2000;
    transition: transform .5s cubic-bezier(.16, 1, .3, 1);
    pointer-events: none;
    display: flex;
    align-items: center;
    gap: 10px;
    white-space: nowrap
}

.toast.success {
    background: rgba(34, 197, 94, .92)
}

.toast.error {
    background: rgba(239, 68, 68, .92)
}

.toast.show {
    transform: translateX(-50%) translateY(0)
}

/* ===== GRADIENTS ===== */
.g1 {
    background: linear-gradient(135deg, #1a1a4e, #0f3460, #16213e)
}

.g2 {
    background: linear-gradient(135deg, #1a1a2e, #16213e, #0f3460)
}

.g3 {
    background: linear-gradient(135deg, #2d1b69, #11001c, #1a0a3e)
}

.g4 {
    background: linear-gradient(135deg, #0d2137, #0a2e4d, #071e30)
}

.g5 {
    background: linear-gradient(135deg, #1b2838, #0e1a29, #1a0a3e)
}

.g6 {
    background: linear-gradient(135deg, #0f2027, #203a43, #2c5364)
}

/* ===== ANIMS ===== */
@keyframes mFadeUp {
    from {
        opacity: 0;
        transform: translateY(30px)
    }
    to {
        opacity: 1;
        transform: translateY(0)
    }
}

@keyframes mFadeIn {
    from {
        opacity: 0
    }
    to {
        opacity: 1
    }
}

@keyframes mSpin {
    from {
        transform: rotate(0)
    }
    to {
        transform: rotate(360deg)
    }
}