/* ===== Reset & Variables ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --graphite: #111418;
    --graphite-2: #0D1117;
    --surface: #1A202C;
    --surface-hover: #222C3A;
    --border: #2D3748;
    --white: #F8FAFC;
    --text: #CBD5E1;
    --muted: #94A3B8;
    --blue: #3B82F6;
    --blue-2: #6366F1;
    --orange: #F97316;
    --radius: 8px;
    --radius-sm: 6px;
    --container: 1180px;
}

html { scroll-behavior: smooth; }

body {
    font-family: Inter, "HarmonyOS Sans", "Microsoft YaHei", Arial, sans-serif;
    background: var(--graphite);
    color: var(--white);
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
button { border: none; background: none; cursor: pointer; font: inherit; color: inherit; }
ul { list-style: none; }

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

/* ===== Navigation ===== */
.nav {
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    position: sticky;
    top: 0;
    background: rgba(17, 20, 24, 0.82);
    backdrop-filter: blur(18px);
    z-index: 20;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 800;
    font-size: 24px;
    letter-spacing: -0.5px;
    color: var(--white);
}

.logo-img {
    width: 34px;
    height: 34px;
    border-radius: 3px;
    object-fit: contain;
}

.menu {
    display: flex;
    gap: 34px;
    color: var(--text);
    font-size: 14px;
}

.menu a {
    transition: color 0.15s;
}

.menu a:hover {
    color: var(--blue);
}

.nav-cta {
    background: var(--orange);
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    font-weight: 700;
    font-size: 14px;
    box-shadow: 0 10px 30px rgba(249, 115, 22, 0.22);
    transition: transform 0.15s, box-shadow 0.15s;
}

.nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 14px 36px rgba(249, 115, 22, 0.28);
}

/* ===== Master UI Classes ===== */
.grid-bg {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
    background-size: 64px 64px;
    mask-image: linear-gradient(to bottom, rgba(0,0,0,.9), transparent 85%);
}

.orbit {
    position: absolute;
    right: -120px;
    top: 120px;
    width: 680px;
    height: 680px;
    border-radius: 50%;
    border: 1px solid rgba(59,130,246,.28);
    box-shadow: inset 0 0 80px rgba(59,130,246,.08);
}

.orbit:before, .orbit:after {
    content: "";
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(59,130,246,.18);
}

.orbit:before { inset: 80px; }
.orbit:after { inset: 170px; }

.growth-line {
    position: absolute;
    right: 90px;
    top: 430px;
    width: 480px;
    height: 170px;
    border-top: 3px solid var(--orange);
    border-radius: 50%;
    transform: rotate(-12deg);
    filter: drop-shadow(0 0 16px rgba(249,115,22,.35));
}

.eyebrow {
    display: inline-flex;
    gap: 10px;
    align-items: center;
    border: 1px solid rgba(59,130,246,.35);
    background: rgba(59,130,246,.1);
    color: #BFD8FF;
    border-radius: 4px;
    padding: 9px 14px;
    font-size: 14px;
    margin-bottom: 28px;
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--blue);
    box-shadow: 0 0 16px var(--blue);
}

h1 {
    font-size: 44px;
    line-height: 1.2;
    margin: 0 0 20px;
    letter-spacing: -1px;
    font-weight: 800;
}

.grad {
    background: linear-gradient(90deg, #fff 20%, #A7C7FF 58%, #FFB27A 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.lead {
    font-size: 16px;
    color: var(--text);
    max-width: 650px;
    margin: 0 0 28px;
    line-height: 1.8;
}

.actions {
    display: flex;
    gap: 16px;
    margin-bottom: 46px;
}

.btn {
    padding: 15px 24px;
    border-radius: var(--radius-sm);
    font-weight: 800;
    display: inline-flex;
    gap: 10px;
    align-items: center;
    font-size: 15px;
}

.btn-primary {
    background: var(--blue);
    box-shadow: 0 14px 36px rgba(59,130,246,.22);
}

.btn-cta {
    background: var(--orange);
    box-shadow: 0 14px 36px rgba(249,115,22,.24);
}

.metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    max-width: 640px;
}

.metric {
    background: rgba(26,32,44,.72);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 18px 20px;
}

.metric strong {
    font-size: 30px;
    display: block;
    margin-bottom: 4px;
}

.metric span {
    display: block;
    color: var(--muted);
    font-size: 14px;
}

.visual {
    position: relative;
}

.dashboard {
    background: rgba(26,32,44,.8);
    border: 1px solid rgba(59,130,246,.28);
    border-radius: 6px;
    padding: 22px;
    box-shadow: 0 30px 90px rgba(0,0,0,.35);
    backdrop-filter: blur(10px);
}

.dash-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 18px;
    color: var(--muted);
    font-size: 13px;
}

.pill {
    padding: 6px 10px;
    background: rgba(34,197,94,.12);
    color: #86EFAC;
    border-radius: 4px;
    border: 1px solid rgba(34,197,94,.25);
}

.chart {
    height: 230px;
    border-radius: 4px;
    background: linear-gradient(180deg, rgba(59,130,246,.18), rgba(59,130,246,.04));
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,.06);
}

.chart svg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.insights {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 14px;
}

.insight {
    background: rgba(13,17,23,.7);
    border: 1px solid rgba(255,255,255,.07);
    padding: 16px;
    border-radius: 4px;
}

.insight b {
    display: block;
    margin-bottom: 6px;
}

.insight p {
    margin: 0;
    color: var(--muted);
    font-size: 13px;
}

.blue { color: var(--blue); }
.orange { color: var(--orange); }

section {
    padding: 110px 0;
    border-top: 1px solid rgba(255,255,255,.06);
}

.section-head {
    max-width: 780px;
    margin-bottom: 42px;
}

.kicker {
    color: var(--blue);
    font-weight: 800;
    margin-bottom: 12px;
}

.section-head h2 {
    font-size: 34px;
    line-height: 1.3;
    margin: 0 0 16px;
    letter-spacing: -0.5px;
}

.section-head p {
    color: var(--text);
    font-size: 16px;
    margin: 0;
    line-height: 1.8;
}

.cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 30px;
    transition: .15s ease;
}

.card:hover {
    border-color: var(--blue);
    transform: translateY(-1px);
    background: var(--surface-hover);
}

.icon {
    width: 44px;
    height: 44px;
    border-radius: 4px;
    background: rgba(59,130,246,.14);
    display: grid;
    place-items: center;
    color: var(--blue);
    font-size: 22px;
    margin-bottom: 18px;
}

.card h3 {
    margin: 0 0 12px;
    font-size: 18px;
}

.card p {
    margin: 0;
    color: var(--muted);
    font-size: 16px;
    line-height: 1.8;
}

.cta-block {
    background: linear-gradient(135deg, rgba(59,130,246,.18), rgba(249,115,22,.16));
    border: 1px solid rgba(255,255,255,.09);
    border-radius: 6px;
    padding: 54px;
    display: flex;
    justify-content: space-between;
    gap: 28px;
    align-items: center;
}

.cta-block h2 {
    font-size: 34px;
    margin: 0 0 12px;
}

.cta-block p {
    color: var(--text);
    margin: 0;
}

.footer {
    padding: 54px 0;
    background: var(--graphite-2);
    color: var(--muted);
    font-size: 14px;
}

.footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* ===== Feature Code Editor ===== */
.feature-code {
    background: #0D1117;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.feature-code-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: rgba(255,255,255,.03);
    border-bottom: 1px solid var(--border);
}

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

.feature-code-dots i {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: block;
}

.feature-code-dots i:nth-child(1) { background: #FF5F57; }
.feature-code-dots i:nth-child(2) { background: #FEBC2E; }
.feature-code-dots i:nth-child(3) { background: #28C840; }

.feature-code-title {
    font-size: 12px;
    color: var(--muted);
    font-family: 'JetBrains Mono', 'Courier New', monospace;
}

.feature-code-body {
    padding: 20px;
    font-family: 'JetBrains Mono', 'Courier New', monospace;
    font-size: 13px;
    line-height: 1.7;
    color: #8B949E;
    min-height: 280px;
    overflow-x: auto;
}

.feature-code-body .line {
    display: block;
    white-space: pre;
}

.feature-code-body .kw { color: #FF7B72; }
.feature-code-body .fn { color: #D2A8FF; }
.feature-code-body .str { color: #A5D6FF; }
.feature-code-body .cm { color: #8B949E; font-style: italic; }
.feature-code-body .num { color: #79C0FF; }
.feature-code-body .op { color: #FF7B72; }
.feature-code-body .var { color: #FFA657; }
.feature-code-body .type { color: #7EE787; }
.feature-code-body .prop { color: #D2A8FF; }

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 705px;
    overflow: hidden;
    background: 
        radial-gradient(circle at 72% 28%, rgba(59, 130, 246, 0.26), transparent 35%),
        radial-gradient(circle at 82% 72%, rgba(249, 115, 22, 0.16), transparent 30%),
        linear-gradient(180deg, #111418 0%, #0D1117 100%);
}

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

.hero-gradient {
    position: absolute;
    top: -20%;
    left: 50%;
    transform: translateX(-50%);
    width: 1000px;
    height: 1000px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.12) 0%, transparent 70%);
    filter: blur(100px);
}

.hero-mesh {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
    background-size: 64px 64px;
    mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 85%);
}

.hero-inner {
    position: relative;
    z-index: 1;
    padding: 95px 0 50px;
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 48px;
    align-items: center;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    gap: 10px;
    align-items: center;
    border: 1px solid rgba(59, 130, 246, 0.35);
    background: rgba(59, 130, 246, 0.1);
    color: #BFD8FF;
    border-radius: var(--radius-sm);
    padding: 9px 14px;
    font-size: 14px;
    margin-bottom: 28px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--blue);
    box-shadow: 0 0 16px var(--blue);
}

.hero-title {
    font-size: 44px;
    line-height: 1.2;
    margin: 0 0 20px;
    letter-spacing: -1px;
    font-weight: 800;
}

.gradient-text {
    background: linear-gradient(90deg, #fff 20%, #A7C7FF 58%, #FFB27A 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 16px;
    color: var(--text);
    max-width: 650px;
    margin: 0 0 28px;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 46px;
}

.btn-primary {
    padding: 15px 24px;
    border-radius: var(--radius-sm);
    font-weight: 800;
    font-size: 15px;
    display: inline-flex;
    gap: 10px;
    align-items: center;
    background: var(--blue);
    box-shadow: 0 14px 36px rgba(59, 130, 246, 0.22);
    transition: transform 0.15s, box-shadow 0.15s;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 18px 42px rgba(59, 130, 246, 0.28);
}

.btn-primary svg {
    transition: transform 0.15s;
}

.btn-primary:hover svg {
    transform: translateX(3px);
}

.btn-secondary {
    padding: 15px 24px;
    border-radius: var(--radius-sm);
    font-weight: 800;
    font-size: 15px;
    display: inline-flex;
    gap: 10px;
    align-items: center;
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--white);
    transition: border-color 0.15s, background 0.15s;
}

.btn-secondary:hover {
    border-color: var(--blue);
    background: var(--surface-hover);
}

.hero-metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    max-width: 640px;
}

.metric {
    background: rgba(26, 32, 44, 0.72);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 18px 20px;
}

.metric-value {
    font-size: 30px;
    font-weight: 800;
    color: var(--white);
    display: block;
    margin-bottom: 4px;
}

.metric-label {
    color: var(--muted);
    font-size: 14px;
}

/* Hero Visual */
.hero-visual {
    position: relative;
}

.visual-card {
    background: rgba(26, 32, 44, 0.8);
    border: 1px solid rgba(59, 130, 246, 0.28);
    border-radius: var(--radius);
    padding: 22px;
    box-shadow: 0 30px 90px rgba(0, 0, 0, 0.35);
    backdrop-filter: blur(10px);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 18px;
    color: var(--muted);
    font-size: 13px;
}

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

.card-dots i {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.card-dots i:nth-child(1) { background: #ff5f57; }
.card-dots i:nth-child(2) { background: #febc2e; }
.card-dots i:nth-child(3) { background: #28c840; }

.card-title {
    color: var(--muted);
    font-size: 13px;
}

.card-body {
    display: flex;
    gap: 16px;
}

.card-sidebar {
    width: 140px;
    background: rgba(13, 17, 23, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: var(--radius-sm);
    padding: 12px;
    flex-shrink: 0;
}

.sidebar-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    font-size: 13px;
    color: var(--muted);
    border-radius: var(--radius-sm);
    margin-bottom: 4px;
    transition: background 0.15s, color 0.15s;
}

.sidebar-item:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--white);
}

.sidebar-item.active {
    background: rgba(59, 130, 246, 0.15);
    color: var(--blue);
}

.sidebar-icon {
    font-size: 14px;
}

.card-chat {
    flex: 1;
    background: rgba(13, 17, 23, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: var(--radius-sm);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-height: 320px;
    overflow-y: auto;
}

.chat-msg {
    display: flex;
    gap: 10px;
    max-width: 85%;
}

.chat-msg.in { align-self: flex-start; }
.chat-msg.out { align-self: flex-end; flex-direction: row-reverse; }

.chat-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
    background: rgba(59, 130, 246, 0.2);
}

.chat-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.chat-bubble {
    padding: 10px 14px;
    font-size: 13px;
    line-height: 1.5;
    border-radius: var(--radius-sm);
    background: rgba(26, 32, 44, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--text);
}

.chat-msg.out .chat-bubble {
    background: var(--blue);
    border-color: var(--blue);
    color: var(--white);
}

/* ===== Section Common ===== */
section {
    padding: 110px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.section-header {
    max-width: 780px;
    margin-bottom: 42px;
}

.section-header.center {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.section-tag {
    color: var(--blue);
    font-weight: 800;
    font-size: 14px;
    margin-bottom: 12px;
    display: block;
}

.section-title {
    font-size: 34px;
    line-height: 1.3;
    margin: 0 0 16px;
    letter-spacing: -0.5px;
    font-weight: 800;
    color: var(--white);
}

.section-desc {
    color: var(--text);
    font-size: 16px;
    margin: 0;
    line-height: 1.8;
}

/* ===== Channels ===== */
.channels-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
}

.channel-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: border-color 0.15s, transform 0.15s, background 0.15s;
}

.channel-card:hover {
    border-color: var(--blue);
    transform: translateY(-1px);
    background: var(--surface-hover);
}

.channel-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    display: grid;
    place-items: center;
    color: var(--white);
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 16px;
}

.channel-icon.wechat { background: #07c160; }
.channel-icon.wecom { background: #3370ff; }
.channel-icon.feishu { background: #3370ff; }
.channel-icon.dingtalk { background: #1677ff; }
.channel-icon.web { background: #6366f1; }
.channel-icon.telegram { background: #229ed9; }
.channel-icon.slack { background: #4a154b; }
.channel-icon.discord { background: #5865f2; }

.channel-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin: 0 0 8px;
    color: var(--white);
}

.channel-card p {
    font-size: 16px;
    color: var(--muted);
    margin: 0;
    line-height: 1.8;
}

/* ===== Compare ===== */
.compare-wrapper {
    display: grid;
    grid-template-columns: 1fr 60px 1fr;
    gap: 0;
    align-items: stretch;
    max-width: 900px;
    margin: 0 auto;
}

.compare-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 28px;
}

.compare-card.new {
    border-color: var(--blue);
    box-shadow: 0 0 0 1px var(--blue);
}

.compare-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.compare-badge {
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
}

.old-badge {
    background: rgba(239, 68, 68, 0.15);
    color: #fca5a5;
}

.new-badge {
    background: rgba(59, 130, 246, 0.15);
    color: #93c5fd;
}

.compare-header h3 {
    font-size: 18px;
    font-weight: 700;
    margin: 0 0 4px;
}

.compare-header p {
    font-size: 13px;
    color: var(--muted);
    margin: 0;
}

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

.compare-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 16px;
    color: var(--text);
    line-height: 1.8;
}

.mark {
    width: 22px;
    height: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 11px;
    font-weight: 700;
    flex-shrink: 0;
}

.mark.x {
    background: rgba(239, 68, 68, 0.15);
    color: #fca5a5;
}

.mark.check {
    background: var(--blue);
    color: var(--white);
}

.compare-divider {
    display: flex;
    align-items: center;
    justify-content: center;
}

.vs-badge {
    width: 48px;
    height: 48px;
    background: var(--surface);
    border: 2px solid var(--border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 14px;
    color: var(--muted);
}

/* ===== Features ===== */
.features-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 48px;
    border-bottom: 1px solid var(--border);
    overflow-x: auto;
}

.feature-tab {
    padding: 14px 20px;
    font-size: 14px;
    font-weight: 600;
    color: var(--muted);
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: color 0.15s, border-color 0.15s;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 8px;
}

.feature-tab:hover {
    color: var(--text);
}

.feature-tab.active {
    color: var(--white);
    border-bottom-color: var(--blue);
}

.tab-num {
    font-size: 12px;
    color: var(--muted);
    font-weight: 700;
}

.feature-tab.active .tab-num {
    color: var(--blue);
}

.features-content {
    max-width: 1000px;
    margin: 0 auto;
}

.feature-panel {
    display: none;
    grid-template-columns: 1.15fr 1fr;
    gap: 56px;
    align-items: center;
}

.feature-panel.active {
    display: grid;
}

.feature-image {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.feature-image img {
    width: 100%;
    height: auto;
    display: block;
}

.feature-info h3 {
    font-size: 18px;
    font-weight: 800;
    margin: 0 0 14px;
    letter-spacing: -0.5px;
}

.feature-info > p {
    font-size: 16px;
    color: var(--text);
    line-height: 1.8;
    margin: 0 0 24px;
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    color: var(--text);
    line-height: 1.8;
}

.feature-list li::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--blue);
    border-radius: 50%;
    flex-shrink: 0;
}

/* ===== Pricing ===== */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    max-width: 1000px;
    margin: 0 auto 60px;
}

.pricing-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 28px;
    display: flex;
    flex-direction: column;
    transition: border-color 0.15s, transform 0.15s;
    position: relative;
}

.pricing-card:hover {
    border-color: var(--blue);
    transform: translateY(-2px);
}

.pricing-card.featured {
    border-color: var(--orange);
    box-shadow: 0 0 0 1px var(--orange);
}

.pricing-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    padding: 4px 10px;
    background: var(--orange);
    color: var(--white);
    font-size: 11px;
    font-weight: 700;
    border-radius: var(--radius-sm);
}

.pricing-header {
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.pricing-tier {
    font-size: 14px;
    font-weight: 700;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
}

.pricing-price {
    display: flex;
    align-items: baseline;
    gap: 2px;
}

.price-symbol {
    font-size: 20px;
    font-weight: 700;
    color: var(--white);
}

.price-amount {
    font-size: 48px;
    font-weight: 800;
    letter-spacing: -2px;
    color: var(--white);
    line-height: 1;
}

.price-period {
    font-size: 16px;
    color: var(--muted);
    margin-left: 4px;
}

.pricing-token {
    font-size: 14px;
    color: var(--text);
    margin-bottom: 20px;
    padding: 12px 14px;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: var(--radius-sm);
}

.pricing-token strong {
    color: var(--blue);
    font-weight: 800;
}

.pricing-features {
    flex: 1;
    margin-bottom: 24px;
}

.pricing-features ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.pricing-features ul li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    color: var(--text);
    line-height: 1.8;
}

.pricing-features ul li::before {
    content: '✓';
    font-size: 12px;
    font-weight: 700;
    color: var(--blue);
    flex-shrink: 0;
}

.pricing-btn {
    display: block;
    text-align: center;
    padding: 14px;
    background: var(--surface-hover);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 700;
    color: var(--white);
    transition: border-color 0.15s, background 0.15s;
}

.pricing-btn:hover {
    border-color: var(--blue);
    background: var(--surface);
}

.pricing-btn.primary {
    background: var(--orange);
    border-color: var(--orange);
    box-shadow: 0 10px 30px rgba(249, 115, 22, 0.22);
}

.pricing-btn.primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 14px 36px rgba(249, 115, 22, 0.28);
}

/* TOKEN Recharge */
.recharge-section {
    max-width: 1000px;
    margin: 0 auto 40px;
    text-align: center;
}

.recharge-section h3 {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 8px;
}

.recharge-section > p {
    font-size: 15px;
    color: var(--muted);
    margin-bottom: 32px;
}

.recharge-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 14px;
}

.recharge-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 16px;
    text-align: center;
    transition: border-color 0.15s, transform 0.15s;
    position: relative;
}

.recharge-card:hover {
    border-color: var(--blue);
    transform: translateY(-2px);
}

.recharge-card.hot {
    border-color: var(--orange);
    box-shadow: 0 0 0 1px var(--orange);
}

.recharge-tag {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    padding: 3px 10px;
    background: var(--orange);
    color: var(--white);
    font-size: 11px;
    font-weight: 700;
    border-radius: var(--radius-sm);
    white-space: nowrap;
}

.recharge-amount {
    font-size: 22px;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 8px;
}

.recharge-tokens {
    font-size: 13px;
    color: var(--text);
    margin-bottom: 6px;
}

.recharge-bonus {
    font-size: 12px;
    color: var(--blue);
    font-weight: 600;
}

/* Promo Banner */
.promo-banner {
    max-width: 1000px;
    margin: 0 auto;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.18), rgba(249, 115, 22, 0.16));
    border: 1px solid rgba(255, 255, 255, 0.09);
    border-radius: var(--radius);
    padding: 32px 36px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
}

.promo-content {
    display: flex;
    align-items: center;
    gap: 16px;
}

.promo-icon {
    font-size: 24px;
    color: var(--orange);
}

.promo-content h4 {
    font-size: 20px;
    font-weight: 800;
    margin: 0 0 4px;
}

.promo-content p {
    font-size: 14px;
    color: var(--text);
    margin: 0;
}

.promo-btn {
    padding: 12px 24px;
    background: var(--orange);
    color: var(--white);
    font-weight: 700;
    font-size: 14px;
    border-radius: var(--radius-sm);
    white-space: nowrap;
    transition: transform 0.15s, box-shadow 0.15s;
    box-shadow: 0 10px 30px rgba(249, 115, 22, 0.22);
}

.promo-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 14px 36px rgba(249, 115, 22, 0.28);
}

/* ===== Scenarios ===== */
.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.scenario-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px 24px;
    transition: border-color 0.15s, transform 0.15s, background 0.15s;
}

.scenario-card:hover {
    border-color: var(--blue);
    transform: translateY(-1px);
    background: var(--surface-hover);
}

.scenario-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    background: rgba(59, 130, 246, 0.14);
    display: grid;
    place-items: center;
    color: var(--blue);
    font-size: 22px;
    margin-bottom: 18px;
}

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

.scenario-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin: 0 0 10px;
}

.scenario-card p {
    font-size: 16px;
    color: var(--muted);
    margin: 0;
    line-height: 1.8;
}

/* ===== CTA ===== */
.cta {
    padding: 110px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.cta-inner {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.18), rgba(249, 115, 22, 0.16));
    border: 1px solid rgba(255, 255, 255, 0.09);
    border-radius: var(--radius);
    padding: 64px 54px;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.cta-inner h2 {
    font-size: 34px;
    font-weight: 800;
    margin: 0 0 16px;
    letter-spacing: -0.5px;
}

.cta-inner p {
    font-size: 18px;
    color: var(--text);
    margin: 0 0 32px;
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
}

/* ===== Footer ===== */
.footer {
    padding: 54px 0 32px;
    background: var(--graphite-2);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

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

.footer-top {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 48px;
    margin-bottom: 40px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 800;
    font-size: 20px;
    color: var(--white);
}

.footer-logo img {
    width: 32px;
    height: 32px;
    border-radius: 3px;
}

.footer-brand > p {
    font-size: 14px;
    color: var(--muted);
    line-height: 1.6;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-col h5 {
    font-size: 13px;
    font-weight: 700;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 6px;
}

.footer-col a {
    font-size: 14px;
    color: var(--muted);
    transition: color 0.15s;
}

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

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    font-size: 13px;
    color: var(--muted);
    margin: 0;
}

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

.footer-legal a {
    font-size: 13px;
    color: var(--muted);
    transition: color 0.15s;
}

.footer-legal a:hover {
    color: var(--blue);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .hero-inner {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    .hero-visual {
        max-width: 540px;
        margin: 0 auto;
    }
    .channels-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
    }
    .recharge-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .scenarios-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-top {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .nav-burger {
        display: flex;
    }
    .nav-links.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 80px;
        left: 0;
        right: 0;
        background: rgba(17, 20, 24, 0.98);
        backdrop-filter: blur(18px);
        padding: 20px 24px;
        gap: 16px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .hero {
        min-height: auto;
    }
    .hero-inner {
        padding: 80px 0 40px;
    }
    .hero-title {
        font-size: 32px;
        letter-spacing: -0.5px;
    }
    .hero-metrics {
        grid-template-columns: 1fr;
    }
    .section-title {
        font-size: 28px;
        letter-spacing: -0.5px;
    }
    .channels-grid {
        grid-template-columns: 1fr;
    }
    .compare-wrapper {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .compare-divider {
        padding: 8px 0;
    }
    .feature-panel {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    .features-tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    .recharge-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .scenarios-grid {
        grid-template-columns: 1fr;
    }
    .cta-inner {
        padding: 40px 24px;
    }
    .cta-inner h2 {
        font-size: 28px;
    }
    .cta-actions {
        flex-direction: column;
        align-items: center;
    }
    .footer-links {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
    .promo-banner {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }
    .hero-actions {
        flex-direction: column;
    }
    .hero-actions .btn-primary,
    .hero-actions .btn-secondary {
        width: 100%;
        justify-content: center;
    }
    .recharge-grid {
        grid-template-columns: 1fr;
    }
}