/* ========================================
   CSS Variables / Design Tokens
   ======================================== */
:root {
    --orange: #FF6B35;
    --orange-light: #FF8C5A;
    --orange-dark: #E55A25;
    --blue: #1A73E8;
    --green: #07C160;
    --purple: #8B5CF6;
    --pink: #EC4899;
    --primary: #FF6B35;
    --primary-light: #FF8C5A;
    --dark: #1C1E26;
    --gray-50: #F8F9FA;
    --gray-100: #F1F3F5;
    --gray-200: #E9ECEF;
    --gray-300: #DEE2E6;
    --gray-400: #CED4DA;
    --gray-500: #ADB5BD;
    --gray-600: #6C757D;
    --gray-700: #495057;
    --gray-800: #343A40;
    --gray-900: #212529;
    --text: #1C1E26;
    --text-light: #5A5F6D;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 24px;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
    --shadow-lg: 0 20px 60px rgba(0,0,0,0.12);
    --shadow-orange: 0 4px 20px rgba(255,107,53,0.35);
    --font-stack: 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --max-width: 1200px;
    --section-gap: 100px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-stack);
    background: #fff;
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

ul, ol { 
    list-style: none; 
}

img { 
    max-width: 100%; 
    height: auto; 
    display: block; 
}
button{
    border: none;
    background: none;
    cursor: pointer;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 40px;
}

/* Scroll Animation Classes */
.fade-up {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-up.delay-1 { transition-delay: 0.1s; }
.fade-up.delay-2 { transition-delay: 0.22s; }
.fade-up.delay-3 { transition-delay: 0.38s; }
.fade-up.delay-4 { transition-delay: 0.52s; }

/* ========================================
   Navigation
   ======================================== */
nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(0,0,0,0.06);
    transition: box-shadow 0.3s;
}

nav.scrolled {
    box-shadow: 0 2px 24px rgba(0,0,0,0.06);
}

.nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 40px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 20px;
    font-size: 20px;
    font-weight: 700;
    color: var(--dark);
}

.logo-icon {
    height: 30px;
    border-radius: 10px;
    overflow: hidden;
    transition: transform 0.3s;
    flex-shrink: 0;
}

.logo-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.logo:hover .logo-icon {
    transform: rotate(-8deg) scale(1.08);
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    color: var(--text-light);
    font-size: 15px;
    transition: color 0.2s;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px; left: 0; right: 0;
    height: 2px;
    background: var(--orange);
    border-radius: 1px;
    transform: scaleX(0);
    transition: transform 0.25s;
}

.nav-links a:hover { 
    color: var(--orange); 
}

.nav-links a:hover::after { 
    transform: scaleX(1); 
}

.nav-cta {
    background: var(--orange);
    color: #fff;
    padding: 8px 20px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 14px;
    transition: all 0.25s;
}

.nav-cta:hover {
    background: var(--orange-light);
    transform: translateY(-1px);
    box-shadow: var(--shadow-orange);
}

/* ========================================
   Hero Section - Download Landing
   ======================================== */
.hero {
    padding: 140px 0 var(--section-gap);
    background: linear-gradient(180deg, #F8F9FA 0%, #FFFFFF 60%, #FFF8F4 100%);
    position: relative;
    overflow: hidden;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,107,53,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,107,53,0.04) 1px, transparent 1px);
    background-size: 60px 60px;
    animation: gridMove 25s linear infinite;
    pointer-events: none;
}

@keyframes gridMove {
    0%   { transform: translateY(0); }
    100% { transform: translateY(60px); }
}

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

.hero-glow.glow-1 {
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(255,107,53,0.12) 0%, transparent 70%);
    top: 10%; right: 5%;
    animation: glowFloat 8s ease-in-out infinite;
}

.hero-glow.glow-2 {
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(26,115,232,0.08) 0%, transparent 70%);
    bottom: 10%; left: 5%;
    animation: glowFloat 10s ease-in-out infinite reverse;
}

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

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

.hero-text {
    position: relative;
    z-index: 2;
}

.hero-brand {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 28px;
}

.hero-brand-icon-wrap {
    position: relative;
    height: 68px;
}

.hero-brand-icon-wrap::before {
    content: '';
    position: absolute;
    inset: -6px;
    border-radius: 22px;
    background: linear-gradient(135deg, rgba(255,107,53,0.3), rgba(255,140,0,0.15));
    animation: iconPulse 2.5s ease-in-out infinite;
}

@keyframes iconPulse {
    0%, 100% { opacity: 0.4; transform: scale(1); }
    50%       { opacity: 0.8; transform: scale(1.06); }
}

.hero-brand-icon {
    position: relative;
    width: 68px;
    height: 68px;
    border-radius: 18px;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(255,107,53,0.35);
    z-index: 1;
}

.hero-brand-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.hero-brand-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.hero-brand-name {
    font-size: 30px !important;
    font-weight: 800;
    color: var(--dark);
    letter-spacing: -0.5px;
}

.hero-brand-tag {
    font-size: 12px;
    color: #fff;
    font-weight: 600;
    background: linear-gradient(135deg, var(--orange), #FF8C00);
    padding: 3px 12px;
    border-radius: 20px;
    align-self: flex-start;
    box-shadow: 0 2px 12px rgba(255,107,53,0.25);
}

.hero .hero-short-comment {
    font-size: clamp(34px, 4.8vw, 52px);
    font-weight: 800;
    line-height: 1.15;
    color: var(--dark);
    margin-bottom: 18px;
}

.hero .hero-short-comment span {
    background: linear-gradient(135deg, var(--orange), #FF8C00);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero .hero-short-comment .cursor {
    display: inline-block;
    width: 3px;
    height: 1em;
    background: var(--orange);
    margin-left: 4px;
    animation: blink 1s step-end infinite;
    vertical-align: text-bottom;
    -webkit-text-fill-color: initial;
    background-clip: initial;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50%      { opacity: 0; }
}

.hero-desc {
    font-size: 17px;
    color: var(--text-light);
    margin-bottom: 36px;
    max-width: 460px;
    line-height: 1.75;
}

.hero-ctas {
    display: flex;
    gap: 14px;
    margin-bottom: 44px;
    flex-wrap: wrap;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(135deg, var(--orange), #FF8C00);
    color: #fff;
    padding: 15px 36px;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 4px 20px rgba(255,107,53,0.35);
    position: relative;
    overflow: hidden;
}

.btn-primary::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.2), transparent);
    opacity: 0;
    transition: opacity 0.3s;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 32px rgba(255,107,53,0.45);
}

.btn-primary:hover::after { 
    opacity: 1; 
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    color: var(--text);
    padding: 15px 32px;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 600;
    border: 2px solid var(--gray-200);
    cursor: pointer;
    transition: all 0.25s;
}

.btn-outline:hover {
    border-color: var(--orange);
    color: var(--orange);
    background: rgba(255,107,53,0.03);
}

.hero-stats {
    display: flex;
    gap: 44px;
}

.stat {
    position: relative;
}

.stat::after {
    content: '';
    position: absolute;
    bottom: -8px; left: 0;
    width: 24px; height: 3px;
    background: var(--orange);
    border-radius: 2px;
    opacity: 0;
    transition: opacity 0.3s;
}

.stat:hover::after { 
    opacity: 1; 
}

.stat-number {
    font-size: 28px;
    font-weight: 800;
    color: var(--dark);
}

.stat-label {
    font-size: 13px;
    color: var(--text-light);
    margin-top: 2px;
}

/* Hero Visual - Client Screenshot */
.hero-visual {
    position: relative;
    z-index: 2;
}

.screenshot-wrapper {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: visible;
}

.screenshot-main {
    width: 100%;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: #fff;
    box-shadow:
        0 32px 64px rgba(0,0,0,0.15),
        0 16px 32px rgba(0,0,0,0.1),
        0 0 0 1px rgba(0,0,0,0.05);
    transform: perspective(1200px) rotateY(-8deg) rotateX(4deg);
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
}

.screenshot-main:hover {
    transform: perspective(1200px) rotateY(-4deg) rotateX(2deg);
}

.screenshot-main img {
    width: 100%;
    display: block;
    border-radius: var(--radius-lg);
}

.screenshot-glow {
    position: absolute;
    inset: -20px;
    background: radial-gradient(ellipse at center, rgba(255,107,53,0.15) 0%, transparent 70%);
    z-index: -1;
    pointer-events: none;
}

/* Floating Tags */
.float-tag {
    position: absolute;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255,255,255,0.9);
    border-radius: var(--radius-md);
    padding: 10px 16px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.12);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 500;
    z-index: 10;
    animation: tagFloat 3s ease-in-out infinite;
}

.float-tag .tag-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.float-tag.tag-1 {
    top: 20px; right: -30px;
    animation-delay: 0s;
}

.float-tag.tag-1 .tag-dot { 
    background: #4CAF50; 
}

.float-tag.tag-2 {
    bottom: 80px; left: -40px;
    animation-delay: 0.8s;
}

.float-tag.tag-2 .tag-dot { 
    background: var(--orange); 
}

.float-tag.tag-3 {
    bottom: 20px; right: 20px;
    animation-delay: 1.6s;
}

.float-tag.tag-3 .tag-dot { 
    background: #2196F3; 
}

@keyframes tagFloat {
    0%, 100% { transform: translateY(0); }
    50%       { transform: translateY(-8px); }
}

/* ========================================
   Three Steps Section
   ======================================== */
.steps-section {
    padding: var(--section-gap) 0;
    background: var(--dark);
    color: #fff;
    position: relative;
    overflow: hidden;
}

.steps-section::before {
    content: '';
    position: absolute;
    top: -200px; right: -200px;
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(255,107,53,0.08) 0%, transparent 70%);
    pointer-events: none;
}

.steps-header {
    text-align: center;
    margin-bottom: 60px;
}

.steps-header .section-label {
    font-size: 13px;
    color: rgba(255,255,255,0.5);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 12px;
}

.steps-header h2 {
    font-size: clamp(32px, 4vw, 42px);
    font-weight: 700;
    margin-bottom: 12px;
}

.steps-header p {
    color: rgba(255,255,255,0.5);
    font-size: 16px;
}

.steps-grid {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: 20px;
    max-width: 1000px;
    margin: 0 auto;
}

.step-item {
    flex: 1;
    text-align: center;
    max-width: 280px;
}

.step-icon-wrap {
    position: relative;
    width: 100px;
    height: 100px;
    margin: 0 auto 20px;
}

.step-icon {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: rgba(255,255,255,0.05);
    border: 2px solid rgba(255,107,53,0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    position: relative;
}

.step-num {
    position: absolute;
    top: -4px;
    right: -4px;
    width: 32px;
    height: 32px;
    background: var(--orange);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    border: 2px solid var(--dark);
}

.step-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 100px;
    color: rgba(255,107,53,0.5);
    font-size: 24px;
    flex-shrink: 0;
}

.step-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: #fff;
}

.step-desc {
    font-size: 14px;
    color: rgba(255,255,255,0.5);
    line-height: 1.6;
}

/* ========================================
   Core Features Section
   ======================================== */
.features {
    padding: var(--section-gap) 0;
    position: relative;
    overflow: hidden;
}

.features::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gray-200), transparent);
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    background: rgba(255,107,53,0.08);
    color: var(--orange);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(28px, 4vw, 38px);
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 12px;
}

.section-desc {
    color: var(--text-light);
    font-size: 17px;
    max-width: 500px;
    margin: 0 auto;
}

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

.feat {
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-xl);
    padding: 32px;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
}

.feat::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--orange), #FF8C00);
    transform: scaleX(0);
    transition: transform 0.3s;
}

.feat:hover {
    border-color: rgba(255,107,53,0.3);
    box-shadow: 0 16px 48px rgba(255,107,53,0.08);
    transform: translateY(-4px);
}

.feat:hover::before { 
    transform: scaleX(1); 
}

.feat-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.feat-icon svg {
    width: 26px;
    height: 26px;
    stroke: #fff;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
    fill: none;
}

.feat:hover .feat-icon {
    transform: scale(1.08) translateY(-3px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.18);
}

/* Feature Icons with Brand Colors */
.feat-icon--deploy { 
    background: linear-gradient(135deg, #FF6B35, #E8530E); 
    box-shadow: 0 4px 14px rgba(255,107,53,0.35); 
}
.feat-icon--wechat { 
    background: linear-gradient(135deg, #07C160, #059B4D); 
    box-shadow: 0 4px 14px rgba(7,193,96,0.35); 
}
.feat-icon--skills { 
    background: linear-gradient(135deg, #F5A623, #E08E0B); 
    box-shadow: 0 4px 14px rgba(245,166,35,0.35); 
}
.feat-icon--memory { 
    background: linear-gradient(135deg, #8B5CF6, #7C3AED); 
    box-shadow: 0 4px 14px rgba(139,92,246,0.35); 
}
.feat-icon--secure { 
    background: linear-gradient(135deg, #3B82F6, #2563EB); 
    box-shadow: 0 4px 14px rgba(59,130,246,0.35); 
}
.feat-icon--easy { 
    background: linear-gradient(135deg, #EC4899, #DB2777); 
    box-shadow: 0 4px 14px rgba(236,72,153,0.35); 
}

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

.feat p {
    color: var(--text-light);
    font-size: 15px;
    line-height: 1.7;
}

/* ========================================
   Use Cases Section
   ======================================== */
.usecases {
    padding: var(--section-gap) 0;
    background: var(--gray-50);
}

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

.usecase-card {
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-xl);
    padding: 28px;
    transition: all 0.3s;
}

.usecase-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.08);
    border-color: rgba(255,107,53,0.2);
}

.usecase-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 16px;
}

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

.usecase-card p {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.7;
}

/* ========================================
   Comparison Section
   ======================================== */
.comparison {
    padding: var(--section-gap) 0;
    background: #fff;
    position: relative;
}

.comparison::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gray-200), transparent);
}

.compare-table-wrapper {
    max-width: 1000px;
    margin: 0 auto;
    overflow-x: auto;
}

.compare-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 15px;
    min-width: 700px;
}

.compare-table th,
.compare-table td {
    padding: 16px 20px;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.compare-table th {
    background: var(--gray-50);
    font-weight: 600;
    color: var(--dark);
    font-size: 14px;
}

.compare-table th:first-child {
    border-radius: var(--radius-md) 0 0 0;
    width: 160px;
}

.compare-table th:last-child {
    border-radius: 0 var(--radius-md) 0 0;
}

.compare-table td:first-child {
    font-weight: 500;
    color: var(--dark);
}

.compare-table tr:hover td {
    background: var(--gray-50);
}

.compare-table tr:last-child td:first-child {
    border-radius: 0 0 0 var(--radius-md);
}

.compare-table tr:last-child td:last-child {
    border-radius: 0 0 var(--radius-md) 0;
}

/* QClaw Column Highlight */
.compare-table th:nth-child(2),
.compare-table td:nth-child(2) {
    background: rgba(255,107,53,0.03);
    border-left: 2px solid var(--orange);
    border-right: 2px solid var(--orange);
}

.compare-table th:nth-child(2) {
    background: linear-gradient(180deg, rgba(255,107,53,0.08), rgba(255,107,53,0.04));
    color: var(--orange);
    font-weight: 700;
}

.compare-table tr:hover td:nth-child(2) {
    background: rgba(255,107,53,0.06);
}

/* Status Icons */
.status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
}

.status-yes { color: #22C55E; font-weight: 500; }
.status-no { color: #EF4444; }
.status-partial { color: #F59E0B; }

.status-icon {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
}

.status-yes .status-icon { background: #22C55E; color: #fff; }
.status-no .status-icon { background: #EF4444; color: #fff; }
.status-partial .status-icon { background: #F59E0B; color: #fff; }

/* ========================================
   FAQ Section
   ======================================== */
.faq {
    padding: var(--section-gap) 0;
    background: var(--gray-50);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    margin-bottom: 16px;
    overflow: hidden;
    transition: border-color 0.3s, box-shadow 0.3s;
    background: #fff;
}

.faq-item:hover {
    border-color: rgba(255,107,53,0.3);
}

.faq-item.active {
    border-color: var(--orange);
    box-shadow: 0 4px 20px rgba(255,107,53,0.08);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    color: var(--dark);
    background: #fff;
    transition: background 0.2s;
    user-select: none;
    border: none;
    width: 100%;
    text-align: left;
}

.faq-question:hover {
    background: var(--gray-50);
}

.faq-question .q-icon {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(255,107,53,0.08);
    color: var(--orange);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 700;
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1),
                background 0.2s, color 0.2s;
}

.faq-item.active .faq-question .q-icon {
    transform: rotate(45deg);
    background: var(--orange);
    color: #fff;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.faq-answer-inner {
    padding: 0 24px 20px;
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.85;
}

.faq-item.active .faq-answer {
    max-height: 300px;
}

/* ========================================
   Download Section
   ======================================== */
.download {
    padding: var(--section-gap) 0;
    background: linear-gradient(180deg, #fff 0%, var(--gray-50) 100%);
    text-align: center;
}

.download h2 {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 700;
    margin-bottom: 16px;
}

.download > .container > p {
    color: var(--text-light);
    font-size: 18px;
    margin-bottom: 40px;
}

.dl-platforms {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 32px;
}

.dl-card {
    display: flex;
    align-items: center;
    gap: 16px;
    background: #fff;
    border: 2px solid var(--gray-200);
    padding: 24px 36px;
    border-radius: var(--radius-lg);
    transition: all 0.3s;
    min-width: 240px;
    cursor: pointer;
}

.dl-card:hover {
    border-color: var(--orange);
    background: rgba(255,107,53,0.03);
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(255,107,53,0.1);
}

.dl-card .icon { 
    font-size: 36px; 
}

.dl-card .os { 
    font-weight: 700; 
    font-size: 16px; 
}

.dl-card .note { 
    font-size: 12px; 
    color: var(--text-light); 
}

.dl-note {
    font-size: 13px;
    color: var(--text-light);
}

/* ========================================
   Footer
   ======================================== */
footer {
    background: var(--dark);
    color: rgba(255,255,255,0.5);
    padding: 48px 0 32px;
    font-size: 14px;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding-bottom: 32px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 32px;
}

.footer-brand .logo { 
    color: #fff; 
}

.footer-brand p {
    margin-top: 8px;
    font-size: 13px;
    max-width: 280px;
    color: rgba(255,255,255,0.4);
}

.footer-links {
    display: flex;
    gap: 60px;
}

.footer-col h4 {
    color: rgba(255,255,255,0.8);
    font-size: 14px;
    margin-bottom: 12px;
}

.footer-col a {
    display: block;
    color: rgba(255,255,255,0.4);
    font-size: 13px;
    margin-bottom: 8px;
    transition: color 0.2s;
}

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

.footer-bottom {
    gap: 12px;
    text-align: center;
}

.footer-bottom a { 
    color: rgba(255,255,255,0.4); 
}

.footer-bottom a:hover { 
    color: var(--orange); 
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
    .features-grid { 
        grid-template-columns: repeat(2, 1fr); 
    }
    .usecases-grid { 
        grid-template-columns: repeat(2, 1fr); 
    }
    .steps-grid {
        flex-direction: column;
        align-items: center;
        gap: 40px;
    }
    .step-arrow {
        transform: rotate(90deg);
        height: 40px;
        width: 100px;
    }
    .screenshot-main {
        transform: perspective(1200px) rotateY(-4deg) rotateX(2deg);
    }
}

@media (max-width: 768px) {
    .nav-inner { 
        padding: 0 20px; 
    }
    .nav-links { 
        display: none; 
    }
    .container { 
        padding: 0 20px; 
    }

    .hero { 
        padding: 120px 0 60px; 
    }
    .hero-inner {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .hero-visual { 
        order: -1; 
    }
    .hero-stats { 
        gap: 24px; 
    }
    .float-tag { 
        display: none; 
    }
    .screenshot-main {
        transform: none;
    }

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

    .compare-table-wrapper {
        margin: 0 -20px;
        padding: 0 20px;
    }

    .footer-links {
        flex-direction: column;
        gap: 24px;
    }
}

@media (max-width: 480px) {
    .hero h1 { 
        font-size: 30px; 
    }
    .hero-ctas { 
        flex-direction: column; 
    }
    .hero-ctas .btn-primary,
    .hero-ctas .btn-outline {
        width: 100%;
        justify-content: center;
    }
    .hero-stats {
        flex-direction: column;
        gap: 16px;
    }
    .step-icon-wrap,
    .step-icon {
        width: 80px;
        height: 80px;
    }
    .step-icon {
        font-size: 32px;
    }
}

/* ========================================
   SEO Hidden Content
   ======================================== */
.seo-hidden {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

/* °²È«ÏÂÔØ°´Å¥ */
.aqdownload {
    width: 240px;
    height: 86px;
    font-size: 26px;
    color: #fff;
    font-weight: bold;
    line-height: 28px;
    background: linear-gradient(135deg, var(--orange), #FF8C00);
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-content: center;
    border-radius: 10px;
    float: left;
   transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 4px 20px rgba(255, 107, 53, 0.35);
}
.aqdownload:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 32px rgba(255, 107, 53, 0.45);
}
.aqdownload i {
    margin-right: 10px;
    width: 23px;
    height: 28px;
    background-position: -102px -59px;
    display: inline-block;
}
.aqdownload span {
    width: 100%;
    font-size: 14px;
    color: #fff;
    line-height: 1;
    padding-top: 7px;
    display: block;
}
.aq-download-box .cptshow {
    width: 29px;
    height: 14px;
    background-position: -67px -73px;
    position: absolute;
    top: 37px;
    right: -50px;
    display: inline-block;
    cursor: pointer;
}
.ptdownload {
    width: 116px;
    height: 42px;
    font-size: 14px;
    color: #1e1e1e;
    border: #ebebeb solid 1px;
    background: #fff;
    border-radius: 8px;
    text-align: center;
    line-height: 42px;
    position: absolute;
    top: 62px;
    right: -136px;
    display: none;
}
.cc_icon {
    background: url(https://resource.yesky.com/TLimages2023/yeskydown/ccsoftpark/images/icon.png) no-repeat;
}
.aq-download-box{
    position: relative;
    margin-right: 130px;
}

/* ========================================
   Back to Top Button
   ======================================== */
.back-to-top {
    position: fixed;
    bottom: 100px;
    right: 32px;
    width: 66px;
    height: 66px;
    background: linear-gradient(135deg, var(--orange), #FF8C00);
    color: #fff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(255, 107, 53, 0.35);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 99;
}

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

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 32px rgba(255, 107, 53, 0.45);
}

.back-to-top:active {
    transform: translateY(-2px);
}

.back-to-top svg {
    width: 24px;
    height: 24px;
}

@media (max-width: 768px) {
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 44px;
        height: 44px;
    }
}