/* ===== CSS Variables ===== */
:root {
    /* Colors */
    --primary: #2563EB;
    --primary-dark: #1D4ED8;
    --primary-light: #3B82F6;
    --secondary: #7C3AED;
    --secondary-light: #8B5CF6;
    --accent-cyan: #06B6D4;
    --accent-orange: #F59E0B;
    --gradient: linear-gradient(135deg, #2563EB, #7C3AED);
    --gradient-light: linear-gradient(135deg, #3B82F6, #8B5CF6);

    /* Text */
    --text-dark: #0F172A;
    --text-body: #334155;
    --text-muted: #64748B;
    --text-light: #94A3B8;
    --text-white: #FFFFFF;

    /* Backgrounds */
    --bg-white: #FFFFFF;
    --bg-light: #F8FAFC;
    --bg-gray: #F1F5F9;
    --bg-dark: #0F172A;

    /* Borders */
    --border: #E2E8F0;
    --border-light: #F1F5F9;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
    --shadow-glow: 0 0 40px rgba(37, 99, 235, 0.15);

    /* Layout */
    --container-max: 1200px;
    --radius: 12px;
    --radius-lg: 20px;
    --radius-xl: 24px;
    --nav-height: 72px;

    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    color: var(--text-body);
    background: var(--bg-white);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

ul, ol {
    list-style: none;
}

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

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

input, textarea {
    font-family: inherit;
    outline: none;
}

/* ===== Container ===== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius);
    font-size: 15px;
    font-weight: 600;
    transition: var(--transition);
    white-space: nowrap;
    cursor: pointer;
}

.btn-primary {
    background: var(--gradient);
    color: var(--text-white);
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4);
}

.btn-outline {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-white);
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

.btn-sm {
    padding: 8px 20px;
    font-size: 14px;
}

.btn-block {
    width: 100%;
    padding: 14px 28px;
}

/* ===== Navbar ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    z-index: 1000;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    border-bottom-color: var(--border);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-logo-img {
    height: 38px;
    width: auto;
    display: block;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-body);
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: "";
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    border-radius: 2px;
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-cta {
    display: flex;
    align-items: center;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 4px;
}

.hamburger span {
    width: 24px;
    height: 2px;
    background: var(--text-dark);
    border-radius: 2px;
    transition: var(--transition);
}

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

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(160deg, #0F172A 0%, #1E1B4B 40%, #1E293B 100%);
    overflow: hidden;
    padding-top: var(--nav-height);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

.hero-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
}

.shape-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #2563EB, transparent 70%);
    top: -100px;
    right: -100px;
    animation: float-shape 12s ease-in-out infinite;
}

.shape-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #7C3AED, transparent 70%);
    bottom: -50px;
    left: -50px;
    animation: float-shape 15s ease-in-out infinite reverse;
}

.shape-3 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, #06B6D4, transparent 70%);
    top: 40%;
    left: 30%;
    animation: float-shape 10s ease-in-out infinite;
    opacity: 0.2;
}

@keyframes float-shape {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

.hero-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}

.hero-container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    padding-top: 40px;
    padding-bottom: 40px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 24px;
    backdrop-filter: blur(10px);
}

.badge-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #10B981;
    box-shadow: 0 0 8px #10B981;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(0.85); }
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    color: var(--text-white);
    line-height: 1.15;
    letter-spacing: -2px;
    margin-bottom: 24px;
}

.gradient-text {
    background: var(--gradient-light);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.65);
    line-height: 1.8;
    margin-bottom: 36px;
    max-width: 540px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* Hero Visual */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-card {
    width: 100%;
    max-width: 420px;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(20px);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(255, 255, 255, 0.03);
}

.card-dots {
    display: flex;
    gap: 6px;
}

.card-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.15);
}

.card-dots span:nth-child(1) { background: #FF5F57; opacity: 0.8; }
.card-dots span:nth-child(2) { background: #FEBC2E; opacity: 0.8; }
.card-dots span:nth-child(3) { background: #28C840; opacity: 0.8; }

.card-title {
    font-size: 13px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.5);
    margin-left: 4px;
}

.card-body {
    padding: 20px;
    font-family: "SF Mono", "Fira Code", "Consolas", monospace;
    font-size: 13px;
    line-height: 1.8;
}

.code-line {
    color: rgba(255, 255, 255, 0.5);
}

.code-indent {
    padding-left: 20px;
}

.code-key {
    color: #F59E0B;
    font-weight: 600;
}

.code-str {
    color: #93C5FD;
}

.code-val {
    color: #86EFAC;
}

.code-success {
    color: #34D399;
    margin-top: 4px;
}

.hero-floating-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(10px);
}

.float-1 {
    top: 10%;
    left: -20px;
    animation: float-card 4s ease-in-out infinite;
}

.float-2 {
    bottom: 10%;
    right: -20px;
    animation: float-card 4s ease-in-out infinite 2s;
}

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

.float-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.float-icon-blue {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
}

.float-icon-purple {
    background: rgba(124, 58, 237, 0.1);
    color: var(--secondary);
}

.float-value {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1;
}

.float-label {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
}

/* ===== Stats ===== */
.stats {
    padding: 60px 0;
    background: var(--bg-light);
    border-bottom: 1px solid var(--border);
}

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

.stat-item {
    text-align: center;
    padding: 24px 16px;
    border-radius: var(--radius);
    background: var(--bg-white);
    border: 1px solid var(--border-light);
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: rgba(37, 99, 235, 0.2);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 500;
}

/* ===== Sections ===== */
.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 64px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(37, 99, 235, 0.08);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    border-radius: 100px;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

.section-tag-light {
    background: rgba(255, 255, 255, 0.15);
    color: rgba(255, 255, 255, 0.9);
}

.section-title {
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    font-weight: 800;
    color: var(--text-dark);
    line-height: 1.3;
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.section-title-light {
    color: var(--text-white);
}

.section-desc {
    font-size: 16px;
    color: var(--text-muted);
    line-height: 1.7;
}

.section-desc-light {
    color: rgba(255, 255, 255, 0.65);
}

/* ===== Features ===== */
.features {
    background: var(--bg-white);
}

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

.feature-card {
    padding: 32px 24px;
    border-radius: var(--radius-lg);
    background: var(--bg-white);
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    transition: var(--transition);
}

.icon-blue { background: rgba(37, 99, 235, 0.1); color: var(--primary); }
.icon-purple { background: rgba(124, 58, 237, 0.1); color: var(--secondary); }
.icon-cyan { background: rgba(6, 182, 212, 0.1); color: var(--accent-cyan); }
.icon-orange { background: rgba(245, 158, 11, 0.1); color: var(--accent-orange); }

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

.feature-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.feature-desc {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
}

/* ===== Solutions ===== */
.solutions {
    background: var(--bg-light);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.solution-card {
    padding: 36px 28px;
    border-radius: var(--radius-lg);
    background: var(--bg-white);
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
}

.solution-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(37, 99, 235, 0.2);
}

.solution-number {
    font-size: 48px;
    font-weight: 800;
    color: rgba(37, 99, 235, 0.1);
    line-height: 1;
    margin-bottom: 16px;
    transition: var(--transition);
}

.solution-card:hover .solution-number {
    color: rgba(37, 99, 235, 0.15);
}

.solution-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.solution-desc {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 20px;
}

.solution-tags {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.solution-tags li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-body);
}

.solution-tags li::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--gradient);
    flex-shrink: 0;
}

/* ===== Tech Stack ===== */
.tech-stack {
    background: var(--bg-white);
}

.tech-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    max-width: 900px;
    margin: 0 auto;
}

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 24px 32px;
    border-radius: var(--radius);
    background: var(--bg-light);
    border: 1px solid var(--border);
    transition: var(--transition);
    min-width: 140px;
}

.tech-item:hover {
    background: var(--bg-white);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
    border-color: rgba(37, 99, 235, 0.2);
}

.tech-icon {
    color: var(--primary);
    transition: var(--transition);
}

.tech-item:hover .tech-icon {
    color: var(--secondary);
    transform: scale(1.1);
}

.tech-item span {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-body);
}

/* ===== About ===== */
.about {
    background: var(--bg-light);
}

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

.about-content .section-tag {
    margin-bottom: 16px;
}

.about-content .section-title {
    text-align: left;
}

.about-text {
    font-size: 15px;
    color: var(--text-body);
    line-height: 1.8;
    margin-bottom: 16px;
}

.about-highlights {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 32px;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: var(--bg-white);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.highlight-item:hover {
    border-color: rgba(37, 99, 235, 0.2);
    box-shadow: var(--shadow);
}

.highlight-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(37, 99, 235, 0.08);
    color: var(--primary);
    flex-shrink: 0;
}

.highlight-item span {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dark);
}

.about-visual {
    display: flex;
    justify-content: center;
}

.about-card {
    width: 100%;
    max-width: 380px;
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px 24px;
    background: var(--gradient);
    color: var(--text-white);
}

.about-card-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.2);
}

.about-card-header span {
    font-size: 16px;
    font-weight: 700;
}

.about-card-body {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.cert-item {
    display: flex;
    align-items: center;
    gap: 12px;
}

.cert-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--primary);
    flex-shrink: 0;
    position: relative;
}

.cert-dot::after {
    content: "";
    position: absolute;
    top: -3px;
    left: -3px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    border: 1px solid rgba(37, 99, 235, 0.3);
}

.cert-item span {
    font-size: 14px;
    color: var(--text-body);
    font-weight: 500;
}

/* ===== Contact ===== */
.contact {
    background: linear-gradient(160deg, #0F172A 0%, #1E1B4B 50%, #1E293B 100%);
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: "";
    position: absolute;
    top: -200px;
    right: -200px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.15), transparent 70%);
    border-radius: 50%;
}

.contact-wrapper {
    position: relative;
    z-index: 2;
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.contact-info .section-tag {
    display: inline-block;
    margin-bottom: 16px;
}

.contact-info .section-title {
    text-align: center;
}

.contact-items {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 40px;
    text-align: left;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 24px 26px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.09);
    border-radius: 14px;
    transition: var(--transition);
}

.contact-item:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(37, 99, 235, 0.4);
    transform: translateY(-2px);
}

.contact-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.8);
    flex-shrink: 0;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.contact-item:hover .contact-icon {
    background: rgba(37, 99, 235, 0.2);
    color: var(--text-white);
    border-color: rgba(37, 99, 235, 0.3);
}

.contact-label {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 2px;
}

.contact-value {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
}

/* ===== Footer ===== */
.footer {
    background: #0A0F1E;
    color: rgba(255, 255, 255, 0.6);
    padding: 64px 0 32px;
}

.footer-top {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 60px;
    margin-bottom: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .nav-logo {
    margin-bottom: 16px;
}

.footer-brand .nav-logo-img {
    height: 40px;
}

.footer-desc {
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 16px;
    max-width: 320px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.footer-col h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 16px;
}

.footer-col a,
.footer-col span {
    display: block;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.55);
    margin-bottom: 10px;
    transition: var(--transition);
}

.footer-col a:hover {
    color: var(--text-white);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-copyright {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
}

.footer-icp {
    display: flex;
    gap: 20px;
}

.footer-icp a {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
    transition: var(--transition);
}

.footer-icp a:hover {
    color: rgba(255, 255, 255, 0.7);
}

/* ===== Back to Top ===== */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gradient);
    color: var(--text-white);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
}

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

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

/* ===== Scroll Animations ===== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .hero-content {
        max-width: 600px;
        margin: 0 auto;
    }

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

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

    .hero-buttons {
        justify-content: center;
    }

    .hero-visual {
        order: -1;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-content .section-title {
        text-align: center;
    }

    .about-content .section-tag {
        margin-left: auto;
        margin-right: auto;
    }

    .about-content {
        max-width: 600px;
        margin: 0 auto;
    }

    .footer-top {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        padding: 24px;
        gap: 20px;
        border-bottom: 1px solid var(--border);
        transform: translateY(-150%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-cta {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .section {
        padding: 64px 0;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .solutions-grid {
        grid-template-columns: 1fr;
    }

    .about-highlights {
        grid-template-columns: 1fr;
    }

    .contact-items {
        grid-template-columns: 1fr;
    }

    .footer-links {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .hero-floating-card {
        display: none;
    }

    .container {
        padding: 0 20px;
    }
}

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

    .tech-item {
        min-width: 120px;
        padding: 16px 20px;
    }

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

    .hero-title {
        font-size: 2rem;
    }

    .page-hero {
        padding: 130px 0 60px;
    }

    .detail-row {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .detail-row.reverse .detail-visual {
        order: -1;
    }

    .cta-banner {
        padding: 48px 28px;
    }

    .process-grid {
        grid-template-columns: 1fr;
    }

    .timeline::before {
        left: 10px;
    }

    .timeline-item {
        padding-left: 44px;
    }

    .timeline-dot {
        left: 3px;
    }
}

/* ===== 子页面横幅 (Page Hero) ===== */
.page-hero {
    position: relative;
    padding: 160px 0 90px;
    background: linear-gradient(160deg, #0F172A 0%, #1E1B4B 40%, #1E293B 100%);
    overflow: hidden;
}

.page-hero .hero-shape {
    opacity: 0.3;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 20px;
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.6);
    transition: var(--transition);
}

.breadcrumb a:hover {
    color: var(--text-white);
}

.breadcrumb .separator {
    color: rgba(255, 255, 255, 0.3);
}

.breadcrumb .current {
    color: rgba(255, 255, 255, 0.9);
}

.page-hero-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--text-white);
    letter-spacing: -1px;
    line-height: 1.2;
    margin-bottom: 16px;
}

.page-hero-desc {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.7;
    max-width: 640px;
}

/* ===== 详情区块 (Detail Rows) ===== */
.detail-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
    margin-bottom: 96px;
}

.detail-row:last-of-type {
    margin-bottom: 0;
}

.detail-row.reverse .detail-visual {
    order: -1;
}

.detail-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: rgba(37, 99, 235, 0.08);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    border-radius: 100px;
    margin-bottom: 16px;
}

.detail-title {
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    font-weight: 800;
    color: var(--text-dark);
    letter-spacing: -0.5px;
    line-height: 1.3;
    margin-bottom: 16px;
}

.detail-desc {
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 20px;
}

.detail-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.detail-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 14px;
    color: var(--text-body);
    line-height: 1.6;
}

.detail-list li::before {
    content: "";
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: rgba(37, 99, 235, 0.1);
    flex-shrink: 0;
    margin-top: 2px;
    background-image: url("data:image/svg+xml,%3Csvg width='10' height='10' viewBox='0 0 24 24' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M5 13L9 17L19 7' stroke='%232563EB' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center;
}

/* 详情页终端卡片（复用样式） */
.terminal-card {
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
    background: rgba(15, 23, 42, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.terminal-card .card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(255, 255, 255, 0.03);
}

.terminal-card .card-body {
    padding: 20px;
    font-family: "SF Mono", "Fira Code", "Consolas", monospace;
    font-size: 13px;
    line-height: 1.9;
    min-height: 180px;
}

/* 详情页指标卡片 */
.metrics-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.metric-box {
    padding: 28px 24px;
    border-radius: var(--radius-lg);
    background: var(--bg-white);
    border: 1px solid var(--border);
    text-align: center;
    transition: var(--transition);
}

.metric-box:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(37, 99, 235, 0.2);
}

.metric-box .metric-value {
    font-size: 1.8rem;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 6px;
}

.metric-box .metric-label {
    font-size: 13px;
    color: var(--text-muted);
}

/* ===== CTA 横幅 ===== */
.cta-banner {
    position: relative;
    padding: 64px 48px;
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, #2563EB 0%, #7C3AED 100%);
    text-align: center;
    overflow: hidden;
}

.cta-banner::before {
    content: "";
    position: absolute;
    top: -100px;
    right: -100px;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
}

.cta-banner::after {
    content: "";
    position: absolute;
    bottom: -120px;
    left: -80px;
    width: 260px;
    height: 260px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
}

.cta-banner-title {
    position: relative;
    z-index: 2;
    font-size: clamp(1.5rem, 3vw, 2.2rem);
    font-weight: 800;
    color: var(--text-white);
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.cta-banner-desc {
    position: relative;
    z-index: 2;
    font-size: 15px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 28px;
}

.cta-banner .btn {
    position: relative;
    z-index: 2;
}

.cta-banner .btn-white {
    background: var(--text-white);
    color: var(--primary);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.cta-banner .btn-white:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.2);
}

/* ===== 流程步骤 ===== */
.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    counter-reset: step;
}

.process-step {
    position: relative;
    padding: 32px 24px;
    border-radius: var(--radius-lg);
    background: var(--bg-white);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.process-step:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.process-step .step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--gradient);
    color: var(--text-white);
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 16px;
}

.process-step h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.process-step p {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.7;
}

/* ===== 发展历程时间轴 ===== */
.timeline {
    position: relative;
    max-width: 720px;
    margin: 0 auto;
    padding-left: 0;
}

.timeline::before {
    content: "";
    position: absolute;
    left: 12px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: linear-gradient(180deg, var(--primary), var(--secondary));
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    padding-left: 48px;
    padding-bottom: 40px;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: 5px;
    top: 6px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--text-white);
    border: 4px solid var(--primary);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.15);
}

.timeline-year {
    font-size: 15px;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 6px;
}

.timeline-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 6px;
}

.timeline-desc {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
}

/* ===== 卡片链接 (了解更多) ===== */
.card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    margin-top: 16px;
    transition: var(--transition);
}

.card-link:hover {
    gap: 10px;
    color: var(--primary-dark);
}

/* ===== 响应式补充 ===== */
@media (max-width: 1024px) {
    .detail-row {
        grid-template-columns: 1fr;
        gap: 40px;
        margin-bottom: 72px;
    }

    .detail-row.reverse .detail-visual {
        order: 0;
    }

    .process-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .page-hero {
        padding: 140px 0 70px;
    }
}

@media (max-width: 768px) {
    .detail-row {
        margin-bottom: 56px;
    }

    .process-grid {
        grid-template-columns: 1fr;
    }

    .cta-banner {
        padding: 48px 32px;
    }

    .metrics-card {
        grid-template-columns: 1fr;
    }
}

/* ===== Token 聚合审计平台页（LinkToken）===== */
.tk-hero {
    padding: 150px 0 90px;
    background:
        radial-gradient(ellipse at 15% 20%, rgba(37, 99, 235, 0.08), transparent 55%),
        radial-gradient(ellipse at 85% 10%, rgba(124, 58, 237, 0.06), transparent 50%),
        var(--bg-light);
}

.tk-hero-container {
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: 56px;
    align-items: center;
}

.tk-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: rgba(37, 99, 235, 0.1);
    border: 1px solid rgba(37, 99, 235, 0.2);
    border-radius: 100px;
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-bottom: 20px;
}

.tk-hero-title {
    font-size: 2.8rem;
    font-weight: 800;
    line-height: 1.25;
    color: var(--text-dark);
    margin-bottom: 20px;
    letter-spacing: -1px;
}

.tk-hero-subtitle {
    font-size: 17px;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 28px;
}

.tk-hero-buttons {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 22px;
}

.btn-dark {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 30px;
    background: var(--bg-dark);
    color: var(--text-white);
    border-radius: 12px;
    font-size: 15px;
    font-weight: 600;
    border: 1px solid var(--bg-dark);
    cursor: pointer;
    transition: var(--transition);
}

.btn-dark:hover {
    background: #1E293B;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline-dark {
    display: inline-flex;
    align-items: center;
    padding: 14px 30px;
    background: transparent;
    color: var(--text-dark);
    border-radius: 12px;
    font-size: 15px;
    font-weight: 600;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.btn-outline-dark:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

.btn-outline-light-tk {
    display: inline-flex;
    align-items: center;
    padding: 14px 30px;
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-white);
    border-radius: 12px;
    font-size: 15px;
    font-weight: 600;
    border: 1px solid rgba(255, 255, 255, 0.25);
    transition: var(--transition);
}

.btn-outline-light-tk:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.5);
}

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

.tk-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-muted);
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: 100px;
    padding: 6px 14px;
}

.tk-tag svg {
    color: var(--primary);
}

/* 控制台 Mockup */
.tk-mockup {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.tk-mockup-header {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 12px 16px;
    background: var(--bg-gray);
    border-bottom: 1px solid var(--border);
}

.tk-mockup-header-inline {
    display: flex;
    gap: 6px;
}

.tk-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
}

.tk-mockup-title {
    margin-left: 8px;
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
}

.tk-mockup-body {
    display: grid;
    grid-template-columns: 108px 1fr;
}

.tk-mockup-side {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 12px 8px;
    background: var(--bg-light);
    border-right: 1px solid var(--border-light);
}

.tk-side-item {
    font-size: 12px;
    color: var(--text-muted);
    padding: 7px 10px;
    border-radius: 8px;
}

.tk-side-item.active {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    font-weight: 600;
}

.tk-mockup-main {
    padding: 14px 16px;
}

.tk-traffic-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 13px;
    color: var(--text-dark);
}

.tk-processing {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1px;
    color: #16A34A;
    background: #DCFCE7;
    padding: 3px 10px;
    border-radius: 100px;
}

.tk-pulse {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #16A34A;
    animation: tkPulse 1.6s ease-in-out infinite;
}

@keyframes tkPulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.75); }
}

.tk-traffic-row {
    display: grid;
    grid-template-columns: 1.1fr 1.3fr 0.7fr 0.5fr;
    gap: 8px;
    font-size: 12px;
    padding: 8px 10px;
    border-radius: 8px;
    color: var(--text-body);
}

.tk-traffic-row:nth-child(odd) {
    background: var(--bg-light);
}

.tk-traffic-head-row {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--text-light);
}

.tk-ok {
    color: #16A34A;
    font-weight: 600;
}

/* Hero 信息块 */
.tk-facts {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    margin-top: 16px;
}

.tk-fact {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 12px 14px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.tk-fact-label {
    font-size: 11px;
    color: var(--text-light);
}

.tk-fact strong {
    font-size: 14px;
    color: var(--text-dark);
    font-weight: 700;
}

.tk-fact-sub {
    font-size: 11px;
    color: var(--text-muted);
}

/* 通用 section 变体 */
.tk-section {
    padding: 88px 0;
}

.tk-section-alt {
    background: var(--bg-light);
}

/* 痛点卡片 */
.tk-pain-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 48px;
}

.tk-pain-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    transition: var(--transition);
}

.tk-pain-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: rgba(37, 99, 235, 0.3);
}

.tk-pain-card h3 {
    font-size: 18px;
    color: var(--text-dark);
    margin-bottom: 10px;
    font-weight: 700;
}

.tk-pain-card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.75;
}

.tk-pain-icon,
.tk-cap-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
}

.tk-icon-blue { background: rgba(37, 99, 235, 0.1); color: #2563EB; }
.tk-icon-purple { background: rgba(124, 58, 237, 0.1); color: #7C3AED; }
.tk-icon-cyan { background: rgba(6, 182, 212, 0.1); color: #06B6D4; }
.tk-icon-orange { background: rgba(245, 158, 11, 0.12); color: #F59E0B; }
.tk-icon-green { background: rgba(22, 163, 74, 0.1); color: #16A34A; }

/* 架构分层 */
.tk-arch {
    max-width: 880px;
    margin: 48px auto 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.tk-arch-label {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--text-light);
    margin-bottom: 10px;
    text-align: center;
}

.tk-arch-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    width: 100%;
}

.tk-arch-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px 18px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    transition: var(--transition);
}

.tk-arch-card:hover {
    border-color: rgba(37, 99, 235, 0.35);
    box-shadow: var(--shadow);
}

.tk-arch-card strong {
    font-size: 14px;
    color: var(--text-dark);
}

.tk-arch-card span {
    font-size: 12px;
    color: var(--text-muted);
}

.tk-arch-arrow {
    color: var(--primary-light);
    padding: 2px 0;
}

.tk-arch-core {
    background: var(--gradient);
    border-radius: 14px;
    padding: 20px 28px;
    text-align: center;
    box-shadow: var(--shadow-glow);
    margin: 4px 0;
}

.tk-arch-core strong {
    display: block;
    color: var(--text-white);
    font-size: 17px;
    margin-bottom: 12px;
}

.tk-arch-chips {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
}

.tk-arch-chips span {
    background: rgba(255, 255, 255, 0.16);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: var(--text-white);
    font-size: 13px;
    padding: 5px 16px;
    border-radius: 100px;
}

/* 八大能力 */
.tk-cap-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 48px;
}

.tk-cap-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 26px 22px;
    transition: var(--transition);
}

.tk-cap-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.tk-cap-card h3 {
    font-size: 16px;
    color: var(--text-dark);
    margin-bottom: 8px;
    font-weight: 700;
}

.tk-cap-card p {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.7;
}

.tk-cap-icon {
    width: 42px;
    height: 42px;
    margin-bottom: 14px;
}

/* 接入步骤 + 代码 */
.tk-integrate {
    display: grid;
    grid-template-columns: 1fr 1.15fr;
    gap: 48px;
    margin-top: 48px;
    align-items: start;
}

.tk-steps {
    display: flex;
    flex-direction: column;
    gap: 26px;
}

.tk-step {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.tk-step-num {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    font-weight: 800;
    font-size: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tk-step h3 {
    font-size: 16px;
    color: var(--text-dark);
    margin-bottom: 4px;
    font-weight: 700;
}

.tk-step p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
}

.tk-code-card {
    background: var(--bg-dark);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.tk-code-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.tk-copy-btn {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: rgba(255, 255, 255, 0.7);
    font-size: 12px;
    padding: 5px 12px;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
}

.tk-copy-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    color: var(--text-white);
}

.tk-code {
    padding: 20px 22px;
    font-family: "SF Mono", "Fira Code", Consolas, monospace;
    font-size: 13px;
    line-height: 1.75;
    color: rgba(255, 255, 255, 0.85);
    overflow-x: auto;
}

.tk-kw { color: #C084FC; }
.tk-str { color: #6EE7B7; }
.tk-num { color: #FCA5A5; }

/* 场景卡片 */
.tk-scene-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 48px;
}

.tk-scene-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 30px 26px;
    transition: var(--transition);
}

.tk-scene-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: rgba(37, 99, 235, 0.3);
}

.tk-scene-card h3 {
    font-size: 17px;
    color: var(--text-dark);
    margin-bottom: 10px;
    font-weight: 700;
}

.tk-scene-card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.75;
    margin-bottom: 18px;
}

.tk-scene-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.tk-scene-tags span {
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
    background: rgba(37, 99, 235, 0.08);
    border: 1px solid rgba(37, 99, 235, 0.15);
    padding: 4px 12px;
    border-radius: 100px;
}

/* FAQ 手风琴 */
.tk-faq {
    max-width: 820px;
    margin: 48px auto 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.tk-faq-item {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: 14px;
    overflow: hidden;
    transition: var(--transition);
}

.tk-faq-item.open {
    border-color: rgba(37, 99, 235, 0.35);
    box-shadow: var(--shadow);
}

.tk-faq-q {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 24px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-dark);
    text-align: left;
    font-family: inherit;
}

.tk-faq-arrow {
    flex-shrink: 0;
    color: var(--text-light);
    transition: var(--transition);
}

.tk-faq-item.open .tk-faq-arrow {
    transform: rotate(180deg);
    color: var(--primary);
}

.tk-faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
}

.tk-faq-a p {
    padding: 0 24px 20px;
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.8;
}

/* 深色 CTA */
.tk-cta {
    background: var(--bg-dark);
    background-image: radial-gradient(ellipse at 50% 0%, rgba(37, 99, 235, 0.25), transparent 60%);
    border-radius: var(--radius-xl);
    padding: 64px 40px;
    text-align: center;
}

.tk-cta-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}

.tk-cta h2 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-white);
    line-height: 1.4;
    margin-bottom: 14px;
    letter-spacing: -0.5px;
}

.tk-cta p {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 30px;
}

.tk-cta-buttons {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Token 页响应式 */
@media (max-width: 1024px) {
    .tk-hero-container {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .tk-hero-title {
        font-size: 2.2rem;
    }

    .tk-cap-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .tk-integrate {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .tk-hero {
        padding: 130px 0 70px;
    }

    .tk-pain-grid,
    .tk-scene-grid {
        grid-template-columns: 1fr;
    }

    .tk-facts {
        grid-template-columns: repeat(2, 1fr);
    }

    .tk-arch-cards {
        grid-template-columns: 1fr;
    }

    .tk-cap-grid {
        grid-template-columns: 1fr;
    }

    .tk-section {
        padding: 64px 0;
    }

    .tk-cta {
        padding: 48px 24px;
    }

    .tk-cta h2 {
        font-size: 1.5rem;
    }
}