/* ─── TOKENS ─── */
:root {
    --bg: #060608;
    --bg2: #0d0d12;
    --bg3: #12121a;
    --border: rgba(255, 255, 255, 0.06);
    --text: #d4cfc8;
    --text-dim: #6b6870;
    --amber: #f5c97a;
    --amber-dim: #a8823a;
    --amber-glow: rgba(245, 201, 122, 0.15);
    --lavender: #b8a8d4;
    --warm: #f0e8d8;
    --radius: 4px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
    font-size: 16px;
}
body {
    background: var(--bg);
    color: var(--text);
    font-family: "DM Mono", monospace;
    font-weight: 300;
    overflow-x: hidden;
}

/* ─── NOISE GRAIN ─── */
body::after {
    content: "";
    position: fixed;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.035'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 9999;
    opacity: 0.5;
}

/* ─── CUSTOM CURSOR ─── */
body {
    cursor: none;
}
#cur {
    position: fixed;
    width: 6px;
    height: 6px;
    background: var(--amber);
    border-radius: 50%;
    pointer-events: none;
    z-index: 10000;
    transform: translate(-50%, -50%);
    transition: width 0.15s, height 0.15s, background 0.15s;
}
#cur-ring {
    position: fixed;
    width: 28px;
    height: 28px;
    border: 1px solid var(--amber);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    transition: width 0.25s, height 0.25s, opacity 0.25s, border-color 0.25s;
    opacity: 0.35;
}
body:has(a:hover, button:hover) #cur {
    width: 10px;
    height: 10px;
    background: var(--amber);
}
body:has(a:hover, button:hover) #cur-ring {
    width: 44px;
    height: 44px;
    opacity: 0.6;
}

/* ─── NAV ─── */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 500;
    padding: 22px 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: linear-gradient(
            to bottom,
            rgba(6, 6, 8, 0.92) 0%,
            transparent 100%
    );
    backdrop-filter: blur(12px);
}
.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: "Syne", sans-serif;
    font-weight: 800;
    font-size: 22px;
    color: var(--warm);
    letter-spacing: 0.08em;
    text-decoration: none;
}
.nav-logo-img {
    flex-shrink: 0;
    display: block;
}
.nav-logo sup {
    font-size: 10px;
    color: var(--amber);
    vertical-align: super;
}
.nav-links {
    display: flex;
    gap: 36px;
    list-style: none;
}
.nav-links a {
    color: var(--text-dim);
    text-decoration: none;
    font-size: 12px;
    letter-spacing: 0.06em;
    transition: color 0.2s;
}
.nav-links a:hover {
    color: var(--amber);
}
.nav-cta {
    padding: 9px 22px;
    border: 1px solid var(--amber);
    color: var(--amber);
    font-family: "DM Mono", monospace;
    font-size: 12px;
    letter-spacing: 0.06em;
    background: transparent;
    cursor: none;
    transition: background 0.2s, color 0.2s;
    border-radius: var(--radius);
}
.nav-cta:hover {
    background: var(--amber);
    color: var(--bg)!important;
}
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: none;
    padding: 4px;
    z-index: 600;
    position: relative;
}
.hamburger span {
    width: 24px;
    height: 1px;
    background: var(--text);
    display: block;
    transition: all 0.3s ease;
}

/* Mobile nav overlay */
.mobile-nav {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 400;
    background: rgba(6, 6, 8, 0.97);
    backdrop-filter: blur(16px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    opacity: 0;
    transition: opacity 0.3s;
}
.mobile-nav.open {
    opacity: 1;
}
.mobile-nav a {
    font-family: "Cormorant Garamond", serif;
    font-size: clamp(36px, 8vw, 56px);
    font-weight: 300;
    letter-spacing: 0.04em;
    color: var(--warm);
    text-decoration: none;
    transition: color 0.2s;
    padding: 8px 0;
}
.mobile-nav a:hover {
    color: var(--amber);
}
.mobile-nav .mobile-cta {
    margin-top: 32px;
    padding: 14px 40px;
    border: 1px solid var(--amber);
    color: var(--amber);
    font-family: "DM Mono", monospace;
    font-size: 12px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}
.mobile-nav .mobile-cta:hover {
    background: var(--amber);
    color: var(--bg);
}

/* ─── HERO ─── */
.hero {
    min-height: 100svh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 160px 24px 80px;
    position: relative;
    overflow: hidden;
}

/* Radial glow orb */
.hero-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -55%);
    width: 700px;
    height: 700px;
    background: radial-gradient(
            ellipse at center,
            rgba(245, 201, 122, 0.18) 0%,
            rgba(240, 180, 80, 0.06) 35%,
            transparent 70%
    );
    border-radius: 50%;
    pointer-events: none;
    z-index: 1;
    animation: pulse-glow 4s ease-in-out infinite alternate;
}
@keyframes pulse-glow {
    from {
        opacity: 0.7;
        transform: translate(-50%, -55%) scale(1);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -55%) scale(1.08);
    }
}

/* Floating ring decoration */
.hero-ring {
    position: absolute;
    top: 60%;
    left: 50%;
    width: 340px;
    height: 340px;
    border: 1px solid rgba(245, 201, 122, 0.1);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: rotate-ring 30s linear infinite;
    pointer-events: none;
    z-index: 1;
}
.hero-ring::after {
    content: "";
    position: absolute;
    top: -4px;
    left: 50%;
    width: 8px;
    height: 8px;
    background: var(--amber);
    border-radius: 50%;
    transform: translateX(-50%);
}
.hero-ring-2 {
    position: absolute;
    top: 60%;
    left: 50%;
    width: 520px;
    height: 520px;
    border: 1px dashed rgba(245, 201, 122, 0.05);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: rotate-ring 60s linear infinite reverse;
    pointer-events: none;
    z-index: 1;
}
@keyframes rotate-ring {
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

/* Particle dots */
.particles {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}
.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: var(--amber);
    border-radius: 50%;
    opacity: 0;
    animation: float-particle linear infinite;
}
@keyframes float-particle {
    0% {
        opacity: 0;
        transform: translateY(0) scale(0);
    }
    10% {
        opacity: 0.6;
        transform: translateY(-10px) scale(1);
    }
    90% {
        opacity: 0.3;
    }
    100% {
        opacity: 0;
        transform: translateY(-200px) scale(0.5);
    }
}

/* eyebrow */
.eyebrow {
    font-size: 11px;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--amber);
    margin-bottom: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    position: relative;
    z-index: 2;
    opacity: 0;
    animation: fade-up 0.8s 0.2s forwards;
}
.eyebrow::before,
.eyebrow::after {
    content: "";
    width: 28px;
    height: 1px;
    background: var(--amber-dim);
}

main h1 {
    font-family: "Cormorant Garamond", serif;
    font-size: clamp(56px, 8vw, 130px);
    font-weight: 300;
    line-height: 0.92;
    color: var(--warm);
    letter-spacing: -0.02em;
    margin-bottom: 28px;
    position: relative;
    z-index: 2;
    opacity: 0;
    animation: fade-up 0.9s 0.35s forwards;
}
main h1 em {
    font-style: italic;
    color: var(--amber);
}

main p {
    max-width: 480px;
    font-size: 15px;
    line-height: 1.7;
    color: var(--text-dim);
    margin: 0 auto 48px;
    position: relative;
    z-index: 2;
    opacity: 0;
    animation: fade-up 0.9s 0.5s forwards;
}

/* signup form — THE challenge HTML */
.signup {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    width: 100%;
    max-width: 440px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
    opacity: 0;
    animation: fade-up 0.9s 0.65s forwards;
}
.signup-row {
    display: flex;
    width: 100%;
    gap: 0;
}
.signup input[type="email"] {
    flex: 1;
    padding: 14px 20px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-right: none;
    border-radius: var(--radius) 0 0 var(--radius);
    color: var(--warm);
    font-family: "DM Mono", monospace;
    font-size: 13px;
    outline: none;
    transition: border-color 0.25s, background 0.25s;
}
.signup input[type="email"]::placeholder {
    color: var(--text-dim);
}
.signup input[type="email"]:focus {
    border-color: rgba(245, 201, 122, 0.5);
    background: rgba(245, 201, 122, 0.04);
}
.signup button[type="submit"] {
    padding: 14px 28px;
    background: var(--amber);
    border: 1px solid var(--amber);
    color: var(--bg);
    font-family: "DM Mono", monospace;
    font-size: 12px;
    font-weight: 400;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: none;
    border-radius: 0 var(--radius) var(--radius) 0;
    white-space: nowrap;
    transition: background 0.2s, opacity 0.2s;
}
.signup button[type="submit"]:hover {
    background: #ffd98a;
    border-color: #ffd98a;
}
/* ─── 联系区块 ─── */
.contact-block {
    max-width: 520px;
    margin: 0 auto;
}
.contact-block.signup {
    margin: 0;
}
.contact-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}
.contact-btn-primary,
.contact-btn-ghost {
    padding: 14px 28px;
    font-family: "DM Mono", monospace;
    font-size: 12px;
    letter-spacing: 0.06em;
    border-radius: var(--radius);
    cursor: none;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
    text-decoration: none;
    border: 1px solid var(--amber);
}
.contact-btn-primary {
    background: var(--amber);
    color: var(--bg);
    flex: 1;
    min-width: 140px;
    text-align: center;
}
.contact-btn-primary:hover {
    background: var(--warm);
    border-color: var(--warm);
}
.contact-btn-ghost {
    background: transparent;
    color: var(--amber);
    flex: 1;
    min-width: 140px;
}
.contact-btn-ghost:hover {
    background: var(--amber);
    color: var(--bg);
}
.contact-info {
    padding: 18px 20px 10px;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--radius);
    margin-bottom: 14px;
}
.contact-info-center {
    text-align: center;
}
.contact-line {
    display: flex;
    align-items: baseline;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px 16px;
    margin-bottom: 10px;
    font-size: 14px;
}
.contact-label {
    color: var(--text-dim);
    font-size: 11px;
    letter-spacing: 0.1em;
    font-family: "DM Mono", monospace;
}
.contact-value {
    font-family: "Syne", sans-serif;
    font-size: 22px;
    font-weight: 700;
    color: var(--amber);
    text-decoration: none;
    letter-spacing: 0.04em;
}
.contact-value:hover {
    color: var(--warm);
}
.contact-wechat-tip {
    font-size: 13px;
    color: var(--text-dim);
    text-align: center;
}
.contact-wechat-tip em {
    color: var(--amber);
    font-style: normal;
    font-weight: 600;
}
.contact-note {
    text-align: left;
}
.cta-section .contact-block {
    max-width: 480px;
    margin: 0 auto;
}

.email-note {
    font-size: 11px;
    color: var(--text-dim);
    letter-spacing: 0.06em;
}

/* scroll hint */
.scroll-hint {
    position: absolute;
    bottom: 36px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-dim);
    font-size: 10px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    opacity: 0;
    animation: fade-up 0.6s 1.2s forwards;
    z-index: 2;
}
.scroll-line {
    width: 1px;
    height: 48px;
    background: linear-gradient(to bottom, var(--amber-dim), transparent);
    animation: scroll-line 2s ease-in-out infinite;
}
@keyframes scroll-line {
    0%,
    100% {
        opacity: 0.4;
        transform: scaleY(1);
    }
    50% {
        opacity: 1;
        transform: scaleY(0.6);
    }
}

/* ─── MARQUEE STRIP ─── */
.marquee-strip {
    overflow: hidden;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 14px 0;
    background: var(--bg2);
}
.marquee-inner {
    display: flex;
    gap: 0;
    white-space: nowrap;
    animation: marquee 22s linear infinite;
}
.marquee-inner span {
    font-size: 11px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--text-dim);
    padding: 0 40px;
}
.marquee-inner span.accent {
    color: var(--amber);
}
@keyframes marquee {
    to {
        transform: translateX(-50%);
    }
}

/* ─── SECTION COMMONS ─── */
section {
    padding: 120px 24px;
}
.container {
    max-width: 1100px;
    margin: 0 auto;
}
.section-label {
    font-size: 10px;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--amber);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}
.section-label::before {
    content: "";
    width: 20px;
    height: 1px;
    background: var(--amber-dim);
}
.section-title {
    font-family: "Cormorant Garamond", serif;
    font-size: clamp(36px, 5vw, 68px);
    font-weight: 300;
    line-height: 1;
    letter-spacing: -0.01em;
    color: var(--warm);
    margin-bottom: 64px;
}
.section-title em {
    font-style: italic;
    color: var(--amber);
}

/* ─── REVEAL ANIMATIONS ─── */
.reveal {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.7s, transform 0.7s;
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}
.reveal-left {
    opacity: 0;
    transform: translateX(-32px);
    transition: opacity 0.7s, transform 0.7s;
}
.reveal-left.visible {
    opacity: 1;
    transform: translateX(0);
}
.reveal-scale {
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.7s, transform 0.7s;
}
.reveal-scale.visible {
    opacity: 1;
    transform: scale(1);
}

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

/* ─── PRODUCT PREVIEW SECTION ─── */
.preview-section {
    background: var(--bg2);
    overflow: hidden;
}
.preview-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2px;
    border: 1px solid var(--border);
}
.preview-card {
    padding: 48px;
    background: var(--bg3);
    border-right: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}
.preview-card:last-child {
    border-right: none;
}
.preview-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(
            ellipse at 20% 20%,
            var(--amber-glow),
            transparent 60%
    );
    opacity: 0;
    transition: opacity 0.4s;
}
.preview-card:hover::before {
    opacity: 1;
}
.preview-num {
    font-size: 10px;
    letter-spacing: 0.2em;
    color: var(--text-dim);
    margin-bottom: 32px;
    font-family: "DM Mono", monospace;
}
.preview-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.preview-icon svg {
    width: 32px;
    height: 32px;
    stroke: var(--amber);
    fill: none;
    stroke-width: 1.2;
}
.preview-card h3 {
    font-family: "Syne", sans-serif;
    font-size: 18px;
    font-weight: 600;
    color: var(--warm);
    margin-bottom: 12px;
    letter-spacing: 0.02em;
}
.preview-card p {
    font-size: 13px;
    line-height: 1.7;
    color: var(--text-dim);
}

/* ─── FEATURES ─── */
.features-section {
    background: var(--bg);
}
.features-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    border: 1px solid var(--border);
}
.feat {
    padding: 40px 36px;
    background: var(--bg2);
    border-right: 1px solid var(--border);
    transition: background 0.3s;
}
.feat:nth-child(3n) {
    border-right: none;
}
.feat:hover {
    background: var(--bg3);
}
.feat-tag {
    display: inline-block;
    padding: 3px 10px;
    border: 1px solid var(--border);
    font-size: 9px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 20px;
    border-radius: 2px;
}
.feat h3 {
    font-family: "Syne", sans-serif;
    font-size: 16px;
    font-weight: 600;
    color: var(--warm);
    margin-bottom: 10px;
}
.feat p {
    font-size: 12px;
    line-height: 1.7;
    color: var(--text-dim);
}
.feat-icon {
    font-size: 24px;
    margin-bottom: 16px;
    line-height: 1;
}

/* ─── SPECS ─── */
.specs-section {
    background: var(--bg2);
}
.specs-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}
.specs-text p {
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-dim);
    margin-bottom: 28px;
}
.specs-text .specs-cta {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--amber);
    text-decoration: none;
    transition: gap 0.2s;
}
.specs-text .specs-cta:hover {
    gap: 16px;
}
.specs-text .specs-cta::after {
    content: "→";
}
.specs-table {
    border: 1px solid var(--border);
}
.spec-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
    font-size: 12px;
    letter-spacing: 0.06em;
    transition: background 0.2s;
}
.spec-row:last-child {
    border-bottom: none;
}
.spec-row:hover {
    background: rgba(245, 201, 122, 0.03);
}
.spec-key {
    color: var(--text-dim);
}
.spec-val {
    color: var(--warm);
    font-weight: 400;
}
.spec-badge {
    padding: 2px 8px;
    border: 1px solid var(--amber);
    border-radius: 2px;
    color: var(--amber);
    font-size: 9px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

/* ─── WAITLIST CTA ─── */
.cta-section {
    background: var(--bg);
    text-align: center;
    padding: 160px 24px;
    position: relative;
    overflow: hidden;
}
.cta-glow {
    position: absolute;
    bottom: -200px;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 600px;
    background: radial-gradient(
            ellipse at center bottom,
            rgba(245, 201, 122, 0.14) 0%,
            transparent 65%
    );
    pointer-events: none;
}
.cta-section .section-title {
    margin-bottom: 24px;
}
.cta-section > .container > p {
    max-width: 460px;
    margin: 0 auto 48px;
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-dim);
}
.cta-form {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    max-width: 440px;
    margin: 0 auto;
}
.cta-form .signup-row {
    width: 100%;
}
.cta-form input[type="email"] {
    flex: 1;
    padding: 16px 22px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-right: none;
    border-radius: var(--radius) 0 0 var(--radius);
    color: var(--warm);
    font-family: "DM Mono", monospace;
    font-size: 13px;
    outline: none;
    transition: border-color 0.25s;
}
.cta-form input[type="email"]::placeholder {
    color: var(--text-dim);
}
.cta-form input[type="email"]:focus {
    border-color: rgba(245, 201, 122, 0.5);
}
.cta-form button[type="submit"] {
    padding: 16px 32px;
    background: var(--amber);
    border: 1px solid var(--amber);
    color: var(--bg);
    font-family: "DM Mono", monospace;
    font-size: 12px;
    font-weight: 400;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: none;
    border-radius: 0 var(--radius) var(--radius) 0;
    transition: background 0.2s;
}
.cta-form button[type="submit"]:hover {
    background: #ffd98a;
}
.cta-note {
    font-size: 11px;
    color: var(--text-dim);
    letter-spacing: 0.06em;
}
.counter-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 22px;
    border: 1px solid var(--border);
    border-radius: 24px;
    font-size: 12px;
    color: var(--text-dim);
    margin-bottom: 48px;
}
.counter-dot {
    width: 6px;
    height: 6px;
    background: #4caf50;
    border-radius: 50%;
    animation: blink 2s infinite;
}
@keyframes blink {
    0%,
    100% {
        opacity: 1;
    }
    50% {
        opacity: 0.3;
    }
}
.counter-badge strong {
    color: var(--amber);
    font-family: "Syne", sans-serif;
    font-size: 15px;
}

/* ─── FOOTER ─── */
footer {
    border-top: 1px solid var(--border);
    padding: 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    background: var(--bg2);
}
.footer-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: "Syne", sans-serif;
    font-weight: 800;
    font-size: 18px;
    color: var(--warm);
    letter-spacing: 0.15em;
}
.footer-logo sup {
    color: var(--amber);
    font-size: 9px;
    vertical-align: super;
}
footer p {
    font-size: 11px;
    color: var(--text-dim);
    letter-spacing: 0.06em;
}
.footer-links {
    display: flex;
    gap: 28px;
    list-style: none;
}
.footer-links a {
    font-size: 11px;
    color: var(--text-dim);
    text-decoration: none;
    letter-spacing: 0.08em;
    transition: color 0.2s;
}
.footer-links a:hover {
    color: var(--amber);
}

/* ─── IMAGE PLACEHOLDER ─── */
.img-placeholder {
    background: var(--bg3);
    border: 1px dashed rgba(245, 201, 122, 0.2);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    color: var(--amber-dim);
    font-size: 11px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    text-align: center;
    padding: 20px;
}
.img-placeholder .ph-icon {
    font-size: 28px;
    opacity: 0.5;
}

/* ─── VISUAL DEMO STRIP ─── */
.demo-strip {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2px;
    margin-bottom: 80px;
}
.demo-strip-five {
    grid-template-columns: repeat(4, 1fr);
}
.section-desc {
    max-width: 640px;
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-dim);
    margin: -24px 0 48px;
}
.demo-card {
    aspect-ratio: 4/3;
    border: 1px solid var(--border);
    overflow: hidden;
    position: relative;
}
.demo-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    display: block;
}
.demo-strip-five .demo-card {
    aspect-ratio: 4 / 3;
}
.demo-strip-five .demo-card.scene-api {
    aspect-ratio: 4 / 3;
}
.demo-card .img-placeholder {
    height: 100%;
    border: none;
    border-radius: 0;
}

/* warm scene mock */
.scene-warm {
    background: radial-gradient(
            ellipse at 50% 80%,
            rgba(245, 150, 50, 0.25) 0%,
            rgba(6, 6, 8, 0.9) 60%
    );
}
.scene-cool {
    background: radial-gradient(
            ellipse at 50% 80%,
            rgba(100, 150, 255, 0.2) 0%,
            rgba(6, 6, 8, 0.9) 60%
    );
}
.scene-focus {
    background: radial-gradient(
            ellipse at 50% 80%,
            rgba(220, 220, 180, 0.18) 0%,
            rgba(6, 6, 8, 0.9) 60%
    );
}
.scene-admin {
    background: radial-gradient(
            ellipse at 50% 70%,
            rgba(255, 87, 87, 0.22) 0%,
            rgba(6, 6, 8, 0.92) 65%
    );
}
.scene-client {
    background: radial-gradient(
            ellipse at 50% 70%,
            rgba(255, 145, 77, 0.2) 0%,
            rgba(6, 6, 8, 0.92) 65%
    );
}
.scene-api {
    background: radial-gradient(
            ellipse at 50% 70%,
            rgba(184, 168, 212, 0.22) 0%,
            rgba(6, 6, 8, 0.92) 65%
    );
}
.demo-panel-body {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 24px;
    gap: 8px;
    z-index: 1;
}
.demo-panel-tag {
    font-size: 10px;
    letter-spacing: 0.2em;
    color: var(--amber);
    font-family: "DM Mono", monospace;
}
.demo-panel-body strong {
    font-family: "Syne", sans-serif;
    font-size: clamp(18px, 2.5vw, 24px);
    font-weight: 700;
    color: var(--warm);
}
.demo-panel-body p {
    font-size: 12px;
    color: var(--text-dim);
    line-height: 1.5;
    max-width: 200px;
}
.arch-visual {
    width: 100%;
    margin: 32px 0;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--bg3);
}
.arch-layer {
    padding: 16px 20px;
    font-size: 11px;
    letter-spacing: 0.06em;
    line-height: 1.5;
    border-bottom: 1px solid var(--border);
    font-family: "DM Mono", monospace;
}
.arch-layer:last-child {
    border-bottom: none;
}
.arch-layer-top {
    color: var(--warm);
    background: rgba(255, 87, 87, 0.06);
}
.arch-layer-mid {
    color: var(--amber);
    background: rgba(245, 201, 122, 0.04);
}
.arch-layer-bot {
    color: var(--text-dim);
}

/* ─── SCREENSHOTS ─── */
.screenshots-section {
    background: var(--bg);
    padding: 100px 24px;
}
.screenshot-showcase {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 2px;
    border: 1px solid var(--border);
}
.screenshot-figure {
    margin: 0;
    background: var(--bg3);
    overflow: hidden;
    position: relative;
}
.screenshot-figure img {
    width: 100%;
    height: auto;
    display: block;
    vertical-align: middle;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
.screenshot-figure:hover img {
    transform: scale(1.02);
}
.screenshot-figure figcaption {
    padding: 14px 18px;
    font-size: 11px;
    letter-spacing: 0.08em;
    color: var(--text-dim);
    border-top: 1px solid var(--border);
    font-family: "DM Mono", monospace;
}
.screenshot-pc img {
    object-fit: cover;
    object-position: top center;
    max-height: 520px;
}

/* ─── H5 EMBED ─── */
.h5-embed-section {
    background: var(--bg2);
    padding: 100px 24px;
    overflow: hidden;
}
.h5-embed-layout {
    display: grid;
    grid-template-columns: minmax(280px, 360px) 1fr;
    gap: 64px;
    align-items: center;
}
.phone-frame {
    width: 100%;
    max-width: 345px;
    margin: 0 auto;
    background: #0a0a0e;
    border-radius: 36px;
    padding: 12px 12px 20px;
    border: 1px solid var(--border);
    box-shadow: 0 40px 80px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(245, 201, 122, 0.08);
}
.phone-frame-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px 12px;
    font-size: 11px;
    color: var(--text-dim);
}
.phone-title {
    font-family: "Syne", sans-serif;
    font-weight: 600;
    color: var(--warm);
    letter-spacing: 0.06em;
}
.phone-signal,
.phone-battery {
    width: 18px;
    height: 8px;
    border: 1px solid var(--text-dim);
    border-radius: 2px;
    opacity: 0.5;
}
.phone-screen {
    position: relative;
    border-radius: 24px;
    overflow: hidden;
    background: #fff;
    aspect-ratio: 9 / 16;
    max-height: min(72vh, 640px);
    border: 1px solid var(--border);
}
.phone-screen iframe {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
    background: #f5f5f5;
}
.iframe-fallback {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    text-align: center;
    background: var(--bg3);
    font-size: 12px;
    color: var(--text-dim);
    line-height: 1.6;
}
.iframe-fallback[hidden] {
    display: none !important;
}
.phone-home-indicator {
    width: 100px;
    height: 4px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    margin: 14px auto 0;
}
.h5-embed-aside {
    display: flex;
    flex-direction: column;
    gap: 28px;
}
.terminal-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
    border: 1px solid var(--border);
}
.terminal-item {
    padding: 24px 28px;
    background: var(--bg3);
    border-bottom: 1px solid var(--border);
    transition: background 0.25s;
}
.terminal-item:last-child {
    border-bottom: none;
}
.terminal-item:hover {
    background: rgba(245, 201, 122, 0.03);
}
.terminal-tag {
    display: inline-block;
    font-size: 10px;
    letter-spacing: 0.15em;
    color: var(--amber);
    margin-bottom: 10px;
    font-family: "DM Mono", monospace;
}
.terminal-item h3 {
    font-family: "Syne", sans-serif;
    font-size: 17px;
    font-weight: 600;
    color: var(--warm);
    margin-bottom: 8px;
}
.terminal-item p {
    font-size: 13px;
    line-height: 1.7;
    color: var(--text-dim);
}
.h5-embed-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}
.h5-btn-primary,
.h5-btn-ghost {
    padding: 12px 28px;
    font-family: "DM Mono", monospace;
    font-size: 12px;
    letter-spacing: 0.06em;
    border-radius: var(--radius);
    cursor: none;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
    text-decoration: none;
}
.h5-btn-primary {
    background: var(--amber);
    color: var(--bg);
    border: 1px solid var(--amber);
}
.h5-btn-primary:hover {
    background: var(--warm);
    border-color: var(--warm);
}
.h5-btn-ghost {
    background: transparent;
    color: var(--amber);
    border: 1px solid var(--amber);
}
.h5-btn-ghost:hover {
    background: var(--amber);
    color: var(--bg);
}
.h5-embed-url {
    font-size: 12px;
    color: var(--text-dim);
    font-family: "DM Mono", monospace;
}
.h5-embed-url a {
    color: var(--amber);
    text-decoration: none;
}
.h5-embed-url a:hover {
    text-decoration: underline;
}
.scene-label {
    position: absolute;
    bottom: 16px;
    left: 16px;
    font-size: 10px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--amber);
    padding: 4px 10px;
    border: 1px solid rgba(245, 201, 122, 0.3);
    border-radius: 2px;
    background: rgba(6, 6, 8, 0.7);
}

/* App mockup lines */
.app-lines {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 24px;
    gap: 8px;
    pointer-events: none;
}
.app-line {
    height: 3px;
    border-radius: 2px;
    background: rgba(245, 201, 122, 0.2);
    transform-origin: left;
    animation: line-grow 1.8s 0.5s cubic-bezier(0.4, 0, 0.2, 1) both;
}
.app-line:nth-child(1) {
    width: 60%;
}
.app-line:nth-child(2) {
    width: 40%;
    animation-delay: 0.65s;
}
.app-line:nth-child(3) {
    width: 75%;
    animation-delay: 0.8s;
}
@keyframes line-grow {
    from {
        transform: scaleX(0);
    }
    to {
        transform: scaleX(1);
    }
}

/* ─── HORIZONTAL SCROLL LOGOS (fake partners) ─── */
.logos-section {
    padding: 60px 24px;
    border-bottom: 1px solid var(--border);
}
.logos-label {
    text-align: center;
    font-size: 10px;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 36px;
}
.logos-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 56px;
    flex-wrap: wrap;
}
.logo-item {
    font-family: "Syne", sans-serif;
    font-size: 14px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.15);
    font-weight: 700;
    white-space: nowrap;
}

/* ─── TIMELINE / HOW IT WORKS ─── */
.how-section {
    background: var(--bg2);
}
.timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    border: 1px solid var(--border);
    margin-top: 0;
}
.timeline-step {
    padding: 40px 32px;
    border-right: 1px solid var(--border);
    position: relative;
    transition: background 0.3s;
}
.timeline-step:last-child {
    border-right: none;
}
.timeline-step:hover {
    background: rgba(245, 201, 122, 0.02);
}
.step-num {
    font-size: 10px;
    letter-spacing: 0.2em;
    color: var(--amber);
    margin-bottom: 20px;
    font-family: "DM Mono", monospace;
}
.timeline-step h3 {
    font-family: "Syne", sans-serif;
    font-size: 15px;
    font-weight: 600;
    color: var(--warm);
    margin-bottom: 10px;
}
.timeline-step p {
    font-size: 12px;
    line-height: 1.7;
    color: var(--text-dim);
}
.step-line {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: transparent;
    overflow: hidden;
}
.step-line::after {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, var(--amber), transparent);
    animation: slide-line 3s linear infinite;
}
@keyframes slide-line {
    to {
        left: 100%;
    }
}
.timeline-step:nth-child(2) .step-line::after {
    animation-delay: -0.75s;
}
.timeline-step:nth-child(3) .step-line::after {
    animation-delay: -1.5s;
}
.timeline-step:nth-child(4) .step-line::after {
    animation-delay: -2.25s;
}

/* ─── SUCCESS STATE ─── */
.success-msg {
    display: none;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: #7ecfa0;
    letter-spacing: 0.06em;
}
.success-msg.show {
    display: flex;
}
.success-msg::before {
    content: "✓";
    font-size: 16px;
}

/* ─── RESPONSIVE ─── */
@media (max-width: 900px) {
    nav {
        padding: 18px 24px;
    }
    .nav-links,
    .nav-cta {
        display: none;
    }
    .hamburger {
        display: flex;
    }

    section {
        padding: 80px 20px;
    }
    .hero {
        padding: 140px 20px 80px;
    }
    .hero-glow {
        width: 400px;
        height: 400px;
    }
    .hero-ring {
        width: 280px;
        height: 280px;
    }
    .hero-ring-2 {
        width: 420px;
        height: 420px;
    }

    .preview-grid {
        grid-template-columns: 1fr;
    }
    .preview-card {
        border-right: none;
        border-bottom: 1px solid var(--border);
    }
    .preview-card:last-child {
        border-bottom: none;
    }

    .features-list {
        grid-template-columns: 1fr;
    }
    .feat {
        border-right: none;
        border-bottom: 1px solid var(--border);
    }
    .feat:last-child {
        border-bottom: none;
    }

    .specs-layout {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .timeline {
        grid-template-columns: 1fr 1fr;
    }
    .timeline-step:nth-child(2n) {
        border-right: none;
    }
    .timeline-step {
        border-bottom: 1px solid var(--border);
    }

    .demo-strip,
    .demo-strip-five {
        grid-template-columns: 1fr 1fr;
    }
    .screenshot-showcase {
        grid-template-columns: 1fr;
    }
    .h5-embed-layout {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    footer {
        flex-direction: column;
        text-align: center;
        padding: 36px 24px;
    }
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }

    .logos-row {
        gap: 32px;
    }
}
@media (max-width: 640px) {
    .demo-strip-five {
        grid-template-columns: 1fr;
    }
}
@media (max-width: 560px) {
    main h1 {
        font-size: clamp(44px, 12vw, 72px);
    }
    .signup-row {
        flex-direction: column;
        gap: 10px;
    }
    .signup input[type="email"] {
        border-right: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: var(--radius);
    }
    .signup button[type="submit"] {
        border-radius: var(--radius);
        padding: 14px;
    }
    .cta-form .signup-row {
        flex-direction: column;
        gap: 10px;
    }
    .cta-form input[type="email"] {
        border-right: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: var(--radius);
    }
    .cta-form button[type="submit"] {
        border-radius: var(--radius);
    }
    .timeline {
        grid-template-columns: 1fr;
    }
    .timeline-step {
        border-right: none;
    }
    .preview-card {
        padding: 32px 24px;
    }
}