:root {
    --bg: #0e1418;
    --bg-2: #151c22;
    --bg-3: #1c252c;
    --line: #283139;
    --fg: #e8edf1;
    --fg-2: #a8b3bd;
    --fg-3: #6c7782;
    --primary: #ffb74d;
    --primary-2: #ff8a4d;
    --accent: #2fabbb;
    --accent-2: #5fd2dd;
    --success: #4caf50;
    --warning: #ff7043;
    --shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
    --radius: 14px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
    background: var(--bg);
    color: var(--fg);
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}
a { color: var(--accent-2); text-decoration: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== Language Switch ===== */
body.lang-en [data-lang="zh"] { display: none !important; }
body:not(.lang-en) [data-lang="en"] { display: none !important; }
.lang-toggle {
    display: inline-flex; gap: 2px;
    background: var(--bg-3); padding: 3px;
    border-radius: 999px; border: 1px solid var(--line);
}
.lang-btn {
    background: transparent; color: var(--fg-2); border: none;
    padding: 5px 12px; border-radius: 999px; cursor: pointer;
    font-size: 13px; font-weight: 700; font-family: inherit;
    transition: all .2s;
}
.lang-btn:hover { color: var(--fg); }
.lang-btn.active {
    background: var(--accent); color: #0e1418;
}
/* Gate 畫面右上角的語言切換 */
.gate-lang {
    position: fixed; top: 18px; right: 18px; z-index: 10000;
    display: none;
}
body.audience-pending .gate-lang { display: block; }

/* ===== Nav ===== */
.nav {
    position: sticky; top: 0; z-index: 100;
    background: rgba(14, 20, 24, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
}
.nav-inner {
    display: flex; align-items: center; justify-content: space-between;
    padding: 14px 24px; max-width: 1200px; margin: 0 auto;
}
.nav-brand {
    display: inline-flex; align-items: center;
}
.nav-brand img { height: 36px; width: auto; display: block; }
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a { color: var(--fg-2); font-size: 14px; transition: color .2s; }
.nav-links a:hover { color: var(--fg); }
.nav-cta {
    background: linear-gradient(135deg, var(--primary), var(--primary-2));
    color: #1a1a1a !important; padding: 8px 18px; border-radius: 999px;
    font-weight: 700; font-size: 14px;
}
@media (max-width: 720px) {
    .nav-links a:not(.nav-cta) { display: none; }
}

/* ===== Audience Gate (首訪強制選擇) ===== */
/* 預設讓 body 與 html 鎖在 viewport，避免任何可能的捲動或殘影 */
html.audience-pending,
body.audience-pending {
    height: 100vh; overflow: hidden;
}
/* 在身份未確認前，整頁內容完全從 layout 移除 */
body.audience-pending .nav,
body.audience-pending .audience-bar,
body.audience-pending main,
body.audience-pending section,
body.audience-pending footer {
    display: none !important;
}
.audience-gate {
    position: fixed; inset: 0; z-index: 9999;
    display: none;
    align-items: center; justify-content: center;
    padding: 24px;
    background:
        radial-gradient(1000px 600px at 30% 20%, rgba(255, 183, 77, 0.20), transparent 60%),
        radial-gradient(800px 500px at 70% 80%, rgba(47, 171, 187, 0.18), transparent 70%),
        #0a0e12;
    opacity: 0;
    transition: opacity .35s ease;
    overflow-y: auto; /* 小螢幕可捲動內容卡片 */
}
body.audience-pending .audience-gate {
    display: flex; opacity: 1;
}
.audience-gate.fade-out {
    opacity: 0; pointer-events: none;
}
.gate-inner { text-align: center; max-width: 920px; width: 100%; }
.gate-logo { height: 44px; margin-bottom: 32px; }
.gate-title {
    font-size: 38px; font-weight: 800; line-height: 1.2;
    letter-spacing: -0.01em; margin-bottom: 14px;
}
.gate-title .grad {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
}
.gate-sub {
    font-size: 17px; color: var(--fg-2); margin-bottom: 40px;
}
.gate-choices {
    display: grid; grid-template-columns: 1fr 1fr; gap: 20px;
}
.gate-card {
    background: var(--bg-3); border: 2px solid var(--line);
    padding: 36px 28px; border-radius: 16px; cursor: pointer;
    text-align: left; transition: all .25s;
    font-family: inherit; color: inherit;
}
.gate-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
}
.gate-card.store:hover { border-color: var(--accent); }
.gate-card.pos:hover { border-color: var(--primary); }
.gate-card-icon {
    width: 56px; height: 56px; border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    font-size: 26px; margin-bottom: 18px;
}
.gate-card.store .gate-card-icon {
    background: rgba(47, 171, 187, 0.18); color: var(--accent-2);
}
.gate-card.pos .gate-card-icon {
    background: rgba(255, 183, 77, 0.18); color: var(--primary);
}
.gate-card-title {
    font-size: 22px; font-weight: 800; margin-bottom: 8px;
}
.gate-card-sub {
    color: var(--fg-2); font-size: 14px; margin-bottom: 18px; line-height: 1.55;
}
.gate-card-pros {
    list-style: none; padding: 0; margin: 0;
}
.gate-card-pros li {
    color: var(--fg-2); font-size: 13px; padding-left: 20px;
    position: relative; margin-bottom: 6px;
}
.gate-card-pros li::before {
    content: "✓"; position: absolute; left: 0;
    color: var(--success); font-weight: 700;
}
.gate-foot {
    margin-top: 32px; font-size: 12px; color: var(--fg-3);
}
@media (max-width: 720px) {
    .gate-title { font-size: 26px; }
    .gate-sub { font-size: 15px; margin-bottom: 28px; }
    .gate-choices { grid-template-columns: 1fr; gap: 14px; }
    .gate-card { padding: 24px 20px; }
    .gate-card-title { font-size: 18px; }
}

/* ===== Audience Switcher ===== */
.audience-bar {
    position: sticky; top: 64px; z-index: 90;
    background: rgba(20, 26, 32, 0.96);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
    padding: 14px 16px;
}
.audience-inner {
    max-width: 1200px; margin: 0 auto;
    display: flex; align-items: center; justify-content: center;
    gap: 12px; flex-wrap: wrap;
}
.audience-prompt {
    font-size: 13px; color: var(--fg-3); margin-right: 4px;
}
.audience-toggle {
    display: inline-flex; gap: 4px;
    background: var(--bg-3); padding: 4px;
    border-radius: 999px; border: 1px solid var(--line);
}
.audience-btn {
    background: transparent; color: var(--fg-2); border: none;
    padding: 8px 18px; border-radius: 999px; cursor: pointer;
    font-size: 14px; font-weight: 600; font-family: inherit;
    transition: all .25s; display: inline-flex; align-items: center; gap: 6px;
}
.audience-btn:hover { color: var(--fg); }
.audience-btn.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-2));
    color: #1a1a1a;
    box-shadow: 0 2px 12px rgba(255, 138, 77, 0.3);
}

/* 顯示/隱藏對應的區塊 */
body.audience-pos [data-audience="store"] { display: none !important; }
body.audience-store [data-audience="pos"] { display: none !important; }

@media (max-width: 720px) {
    .audience-bar { top: 56px; padding: 10px 12px; }
    .audience-prompt { display: none; }
    .audience-btn { padding: 7px 14px; font-size: 13px; }
}

/* ===== Hero ===== */
.hero {
    position: relative; padding: 96px 0 80px;
    background: radial-gradient(1200px 600px at 50% -200px, rgba(255, 183, 77, 0.18), transparent 60%),
                radial-gradient(800px 400px at 80% 100%, rgba(47, 171, 187, 0.12), transparent 70%);
    text-align: center;
    overflow: hidden;
}
.hero-badge {
    display: inline-block; padding: 6px 16px; border-radius: 999px;
    background: rgba(47, 171, 187, 0.15); color: var(--accent-2);
    font-size: 13px; font-weight: 600; margin-bottom: 24px;
    border: 1px solid rgba(47, 171, 187, 0.3);
}
.hero h1 {
    font-size: 56px; line-height: 1.15; font-weight: 800;
    margin-bottom: 24px; letter-spacing: -0.02em;
}
.hero h1 .grad {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 50%, var(--accent) 100%);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero p.lead {
    font-size: 20px; color: var(--fg-2); max-width: 760px; margin: 0 auto 40px;
}
.hero-cta { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 14px 28px; border-radius: 10px; font-weight: 700; font-size: 15px;
    text-decoration: none; transition: all .2s; cursor: pointer; border: none;
}
.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-2));
    color: #1a1a1a;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(255, 138, 77, 0.3); }
.btn-secondary {
    background: transparent; color: var(--fg); border: 1px solid var(--line);
}
.btn-secondary:hover { background: var(--bg-2); border-color: var(--fg-3); }
@media (max-width: 720px) {
    .hero h1 { font-size: 36px; }
    .hero p.lead { font-size: 17px; }
    .hero { padding: 64px 0 56px; }
}

/* ===== Partner Strip ===== */
.partners {
    padding: 48px 0; background: var(--bg-2);
    border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.partners-label {
    text-align: center; color: var(--fg-3); font-size: 13px;
    letter-spacing: 2px; margin-bottom: 28px; text-transform: uppercase;
}
.partners-row {
    display: flex; gap: 20px; justify-content: center; align-items: stretch;
    flex-wrap: wrap;
}
.partner-logo {
    background: #ffffff; border-radius: 10px;
    padding: 18px 24px; min-width: 160px; height: 80px;
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    transition: transform .2s;
}
.partner-logo:hover { transform: translateY(-3px); }
.partner-logo img {
    max-height: 44px; max-width: 140px; width: auto; height: auto;
    object-fit: contain;
}

/* ===== Section ===== */
section { padding: 80px 0; }
.section-head { text-align: center; margin-bottom: 56px; }
.section-tag {
    display: inline-block; padding: 4px 12px; border-radius: 6px;
    background: rgba(255, 183, 77, 0.15); color: var(--primary);
    font-size: 12px; font-weight: 700; letter-spacing: 1px; margin-bottom: 12px;
}
.section-head h2 {
    font-size: 40px; font-weight: 800; letter-spacing: -0.01em;
    line-height: 1.2; margin-bottom: 16px;
}
.section-head p { font-size: 18px; color: var(--fg-2); max-width: 680px; margin: 0 auto; }
@media (max-width: 720px) {
    .section-head h2 { font-size: 28px; }
    section { padding: 56px 0; }
}

/* ===== Value Cards ===== */
.values { background: linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%); }
.values-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.value-card {
    background: var(--bg-3); padding: 32px; border-radius: var(--radius);
    border: 1px solid var(--line); transition: all .25s;
}
.value-card:hover { transform: translateY(-4px); border-color: var(--primary); }
.value-icon {
    width: 48px; height: 48px; border-radius: 12px;
    background: linear-gradient(135deg, rgba(255, 183, 77, 0.2), rgba(255, 138, 77, 0.2));
    display: flex; align-items: center; justify-content: center;
    font-size: 24px; margin-bottom: 20px;
}
.value-card h3 { font-size: 20px; margin-bottom: 12px; font-weight: 700; }
.value-card p { color: var(--fg-2); font-size: 15px; }
@media (max-width: 960px) { .values-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .values-grid { grid-template-columns: 1fr; } }

/* ===== Integration Diagram ===== */
.integration { background: var(--bg-2); }

/* 兩種介接模式並列卡片 */
.mode-grid {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 28px; margin-top: 48px;
}
.mode-card {
    background: var(--bg-3); border-radius: var(--radius);
    border: 1px solid var(--line); padding: 32px;
    display: flex; flex-direction: column;
}
.mode-card.a { border-top: 4px solid var(--accent); }
.mode-card.b { border-top: 4px solid var(--primary); }
.mode-card .mode-tag {
    display: inline-block; align-self: flex-start;
    padding: 4px 12px; border-radius: 6px;
    font-size: 11px; font-weight: 700; letter-spacing: 1px;
    text-transform: uppercase; margin-bottom: 12px;
}
.mode-card.a .mode-tag { background: rgba(47, 171, 187, 0.15); color: var(--accent-2); }
.mode-card.b .mode-tag { background: rgba(255, 183, 77, 0.15); color: var(--primary); }
.mode-card h3 { font-size: 22px; margin-bottom: 10px; }
.mode-card .subtitle { color: var(--fg-2); font-size: 14px; margin-bottom: 24px; }
.mode-flow {
    background: rgba(0, 0, 0, 0.25); border-radius: 10px;
    padding: 16px; margin-bottom: 20px;
    font-family: "Menlo", "Consolas", monospace; font-size: 12px;
    color: var(--accent-2); line-height: 1.7;
}
.mode-flow .arrow-inline { color: var(--fg-3); margin: 0 4px; }
.mode-pros { list-style: none; flex: 1; }
.mode-pros li {
    color: var(--fg-2); font-size: 14px; padding-left: 22px;
    position: relative; margin-bottom: 10px;
}
.mode-pros li::before {
    content: "▸"; position: absolute; left: 0; color: var(--primary);
    font-weight: 700;
}
.mode-pros li strong { color: var(--fg); }
.mode-footer {
    margin-top: 20px; padding-top: 16px; border-top: 1px dashed var(--line);
    color: var(--fg-3); font-size: 12px;
}

/* 客製化 callout */
.custom-callout {
    margin-top: 32px; padding: 24px 28px; border-radius: var(--radius);
    background: linear-gradient(135deg, rgba(255, 183, 77, 0.08), rgba(47, 171, 187, 0.08));
    border: 1px dashed var(--line);
    display: flex; gap: 20px; align-items: center; flex-wrap: wrap;
}
.custom-callout-icon { font-size: 36px; line-height: 1; }
.custom-callout-text { flex: 1; min-width: 260px; }
.custom-callout-text h4 { font-size: 17px; margin-bottom: 6px; }
.custom-callout-text p { color: var(--fg-2); font-size: 14px; }

@media (max-width: 880px) {
    .mode-grid { grid-template-columns: 1fr; }
}

/* ===== Feature Grid (12 modules) ===== */
.features-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.feature-card {
    background: var(--bg-2); border: 1px solid var(--line);
    padding: 28px; border-radius: var(--radius); transition: all .25s;
}
.feature-card:hover { background: var(--bg-3); transform: translateY(-3px); }
.feature-card .num {
    font-family: "Menlo", "Consolas", monospace; font-size: 13px;
    color: var(--primary); margin-bottom: 8px; font-weight: 700;
}
.feature-card h3 {
    font-size: 19px; margin-bottom: 12px;
    display: flex; align-items: center; gap: 10px;
}
.feature-card h3 i { color: var(--accent-2); font-size: 18px; width: 22px; text-align: center; }
.mode-card h3 {
    display: flex; align-items: center; gap: 10px;
}
.mode-card h3 i { width: 24px; text-align: center; }
.mode-card.a h3 i { color: var(--accent-2); }
.mode-card.b h3 i { color: var(--primary); }
.feature-card p { color: var(--fg-2); font-size: 14px; margin-bottom: 12px; }
.feature-card ul { list-style: none; }
.feature-card li {
    color: var(--fg-2); font-size: 13px; padding-left: 18px; position: relative;
    margin-bottom: 6px;
}
.feature-card li::before {
    content: "✓"; position: absolute; left: 0; color: var(--success); font-weight: 700;
}
@media (max-width: 960px) { .features-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .features-grid { grid-template-columns: 1fr; } }

/* ===== Scenarios ===== */
.scenarios { background: var(--bg-2); }
.scenario-list {
    display: grid; grid-template-columns: 1fr 1fr; gap: 24px;
}
.scenario {
    display: flex; gap: 20px; padding: 24px;
    background: var(--bg-3); border-radius: var(--radius);
    border-left: 4px solid var(--accent);
}
.scenario-icon {
    font-size: 32px; flex-shrink: 0; line-height: 1;
}
.scenario h4 { font-size: 17px; margin-bottom: 8px; }
.scenario p { color: var(--fg-2); font-size: 14px; }
@media (max-width: 720px) { .scenario-list { grid-template-columns: 1fr; } }

/* ===== Stats ===== */
.stats {
    background: linear-gradient(135deg, var(--bg-3), var(--bg-2));
    border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.stats-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px;
    text-align: center;
}
.stat-num {
    font-size: 44px; font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1; margin-bottom: 8px;
}
.stat-label { color: var(--fg-2); font-size: 14px; }
@media (max-width: 720px) { .stats-grid { grid-template-columns: 1fr 1fr; } .stat-num { font-size: 32px; } }

/* ===== CTA ===== */
.cta-section {
    padding: 96px 0; text-align: center;
    background: radial-gradient(800px 400px at 50% 0%, rgba(255, 183, 77, 0.15), transparent 70%);
}
.cta-section h2 { font-size: 40px; font-weight: 800; margin-bottom: 16px; }
.cta-section p { font-size: 18px; color: var(--fg-2); margin-bottom: 32px; }
.cta-section .btn { font-size: 16px; padding: 16px 32px; }
@media (max-width: 720px) { .cta-section h2 { font-size: 28px; } }

/* ===== Footer ===== */
footer {
    background: #08090b; padding: 48px 0 32px;
    border-top: 1px solid var(--line); color: var(--fg-3); font-size: 14px;
}
.footer-inner {
    display: flex; justify-content: space-between; align-items: center;
    flex-wrap: wrap; gap: 16px;
}
.footer-brand { display: flex; align-items: center; gap: 10px; color: var(--fg-2); }
.footer-brand img { width: 28px; height: 28px; border-radius: 6px; }
.footer-links { display: flex; gap: 20px; }
.footer-links a { color: var(--fg-3); transition: color .2s; }
.footer-links a:hover { color: var(--fg); }

/* Animation */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
.hero h1, .hero p.lead, .hero-cta { animation: fadeUp .8s ease-out both; }
.hero p.lead { animation-delay: .1s; }
.hero-cta { animation-delay: .2s; }

/* 原行內 style 屬性（CSP 不允許 inline style，改為 class；!important 維持原優先權） */
.lp-1 { color: var(--fg) !important; }
.lp-2 { padding: 48px 0 !important; }
.lp-3 { color: var(--primary) !important; }
.lp-4 { text-align: center !important; margin: 8px 0 24px !important; }
.lp-5 { margin-top: 10px !important; }
.lp-6 { text-align: center !important; margin: 48px 0 24px !important; }