* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'PingFang SC', sans-serif;
    background: #0D0D1A;
    color: #fff;
    line-height: 1.6;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 80px;
}

/* NAV */
.nav {
    position: sticky; top: 0; z-index: 100;
    background: #08080F;
    border-bottom: 1px solid #ffffff10;
    height: 72px;
    display: flex; align-items: center;
}
.nav .container { display: flex; align-items: center; justify-content: space-between; width: 100%; }
.logo { display: flex; align-items: center; gap: 8px; }
.logo-icon {
    width: 32px; height: 32px; border-radius: 8px;
    background: linear-gradient(135deg, #A855F7, #06B6D4);
}
.logo span { font-size: 18px; font-weight: 700; color: #fff; }
.nav-links { display: flex; gap: 32px; }
.nav-links a { color: #B0B0BA; font-size: 14px; text-decoration: none; position: relative; padding-bottom: 4px; transition: color 0.2s; }
.nav-links a::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: linear-gradient(90deg, #A855F7, #06B6D4); border-radius: 2px; transition: width 0.3s; }
.nav-links a:hover { color: #E8E8F0; }
.nav-links a.active { color: #fff; }
.nav-links a.active::after, .nav-links a:hover::after { width: 100%; }
.nav-cta { display: flex; align-items: center; gap: 12px; }
.link-secondary { color: #B0B0BA; font-size: 13px; text-decoration: none; }
.link-secondary:hover { color: #B0B0BA; }

/* BUTTONS */
.btn-primary, .btn-outline, .btn-green { text-decoration: none; }
.btn-primary {
    background: linear-gradient(90deg, #A855F7, #06B6D4);
    color: #fff; border: none; border-radius: 4px;
    padding: 8px 20px; font-size: 14px; font-weight: 600; cursor: pointer;
    transition: filter 0.25s ease, box-shadow 0.25s ease;
}
.btn-primary:hover { filter: brightness(1.15); box-shadow: 0 6px 24px #A855F760; }
.btn-outline {
    background: transparent; color: #A855F7;
    border: 1px solid #A855F7; border-radius: 4px;
    padding: 8px 20px; font-size: 14px; cursor: pointer;
    transition: background 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.btn-outline:hover { background: #A855F720; box-shadow: 0 4px 16px #A855F740; border-color: #C084FC; }
.btn-green {
    background: #16A34A; color: #fff; border: none; border-radius: 4px;
    padding: 8px 20px; font-size: 14px; font-weight: 600; cursor: pointer;
    transition: filter 0.25s ease, box-shadow 0.25s ease;
}
.btn-green:hover { filter: brightness(1.15); box-shadow: 0 6px 24px #16A34A80; }
.btn-lg { padding: 14px 32px; font-size: 16px; }
.btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* HERO */
#heroCanvas {
    position: absolute; top: 0; left: 0;
    width: 100%; height: 100%;
    pointer-events: none;
}
.hero {
    position: relative;
    background: linear-gradient(135deg, #0A0A1A 0%, #0D1B3E 50%, #0A0A1A 100%);
    padding: 160px 0 120px;
    text-align: center;
    border-bottom: 2px solid #A855F750;
    overflow: hidden;
}
.hero h1 {
    font-size: 56px; font-weight: 800; line-height: 1.2;
    margin: 32px 0;
}
.hero .subtitle {
    color: #B0B0BA; font-size: 18px; max-width: 860px;
    margin: 0 auto 32px;
}
.hero .btns { margin-top: 32px; }
.hero-update {
    margin-top: 20px; font-size: 16px; color: #22C55E; letter-spacing: 0.04em; font-weight: 600;
    animation: hero-update-pulse 2s ease-in-out infinite;
}
@keyframes hero-update-pulse {
    0%, 100% { opacity: 1; text-shadow: 0 0 6px #22C55E80; }
    50% { opacity: 0.65; text-shadow: 0 0 14px #22C55Ecc; }
}

/* TAGS */
.tags { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 16px; }
.features .tags { justify-content: flex-start; gap: 8px; }
.features .tag { border-radius: 4px; border: none; padding: 4px 10px; }
.tag {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 4px 12px; border-radius: 20px; font-size: 12px;
}
.tag.purple { background: #A855F720; color: #A855F7; border: 1px solid #A855F760; }
.tag.cyan   { background: #06B6D420; color: #06B6D4; border: 1px solid #06B6D460; }
.tag.pink   { background: #EC489920; color: #EC4899; border: 1px solid #EC489960; }
.tag.green  { background: #22C55E20; color: #22C55E; border: 1px solid #22C55E60; }
.tag.orange { background: #F9731620; color: #F97316; border: 1px solid #F9731660; }
.tag.blue   { background: #3B82F620; color: #3B82F6; border: 1px solid #3B82F660; }
.tag.yellow { background: #EAB30820; color: #EAB308; border: 1px solid #EAB30860; }

/* STATS */
.stats {
    position: relative; overflow: hidden;
    background: #0A0A0A;
    border-top: 2px solid #06B6D450;
    display: flex; align-items: center; justify-content: center;
    height: 100px; gap: 0;
}
.stat { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 4px; }
.num { font-size: 36px; font-weight: 800; }
.label { color: #B0B0BA; font-size: 13px; }
.divider { width: 1px; height: 40px; background: #ffffff20; }
.num.purple { color: #A855F7; }
.num.cyan   { color: #06B6D4; }
.num.pink   { color: #EC4899; }

/* SECTIONS */
section { padding: 80px 0; }
section h2 {
    font-size: 40px; font-weight: 800; text-align: center;
    margin-bottom: 16px;
}
.desc {
    color: #B0B0BA; font-size: 16px; text-align: center;
    margin: 0 auto 48px;
    white-space: pre-line;
}

/* GRIDS */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 24px; }
.grid-4 { display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: 24px; }

/* CARDS */
.card {
    background: #13131F; border-radius: 8px; padding: 28px;
    display: flex; flex-direction: column; gap: 12px;
    overflow: hidden;
}
.card h3 { font-size: 18px; font-weight: 700; color: #fff; }
.card p { color: #B0B0BA; font-size: 14px; }
.card.purple { border: 1px solid #A855F740; }
.card.cyan   { border: 1px solid #06B6D440; }
.card.pink   { border: 1px solid #EC489940; }
.card.green  { border: 1px solid #22C55E40; background: #0D1A0D; }
.card.orange { border: 1px solid #F9731640; }
.card.blue   { border: 1px solid #3B82F640; }
.card.yellow { border: 1px solid #EAB30840; }
.card img { width: 100%; border-radius: 6px; object-fit: cover; }

/* SECTION BACKGROUNDS */
.opportunity {
    position: relative; overflow: hidden;
    background: linear-gradient(160deg, #0D0D2A, #1A0D2E);
    border-top: 2px solid #A855F750;
}
.pain { position: relative; overflow: hidden; background: #050508; border-top: 2px solid #EC489950; }
.sec-canvas {
    position: absolute; top: 0; left: 0;
    width: 100%; height: 100%;
    pointer-events: none;
}
.feat {
    position: relative; overflow: hidden;
    background: linear-gradient(160deg, #0A1A1A, #0D2020);
    border-top: 2px solid #06B6D450;
}
.features { position: relative; overflow: hidden; background: #050508; border-top: 2px solid #A855F750; }
.tech {
    position: relative; overflow: hidden;
    background: linear-gradient(160deg, #0A0A1A, #0D1A2E);
    border-top: 2px solid #06B6D450;
}
.cases { position: relative; overflow: hidden; background: #050508; border-top: 2px solid #A855F750; }
.compare {
    position: relative; overflow: hidden;
    background: linear-gradient(160deg, #0D0D2A, #0A1A1A);
    border-top: 2px solid #06B6D450;
}
.bonus { position: relative; overflow: hidden; background: #050508; border-top: 2px solid #A855F750; }
.showcase {
    position: relative; overflow: hidden;
    background: linear-gradient(160deg, #0A0A1A, #1A0D2E);
    border-top: 2px solid #06B6D450;
}
.faq { position: relative; overflow: hidden; background: #050508; border-top: 2px solid #A855F750; }
/* PRICE */
.price-section { padding: 80px 0; background: #050508; border-top: 2px solid #A855F750; }
.price-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; align-items: stretch; }
.price-card {
    background: #0D0D1A; border: 1px solid #ffffff15; border-radius: 16px;
    overflow: hidden; position: relative; transition: transform .25s, box-shadow .25s;
    display: flex; flex-direction: column;
}
.price-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px #A855F730; }
.price-card-featured { border-color: #A855F7; box-shadow: 0 0 30px #A855F730; }
.price-card-badge {
    position: absolute; top: 16px; right: 16px;
    background: #A855F7; color: #fff; font-size: 12px; font-weight: 700;
    padding: 3px 10px; border-radius: 20px;
}
.price-card-header { padding: 32px 32px 0; }
.price-card-header h3 { font-size: 22px; font-weight: 800; margin-bottom: 6px; }
.price-card-header p { color: #B0B0BA; font-size: 14px; }
.price-card-body { padding: 24px 32px 32px; display: flex; flex-direction: column; flex: 1; }
.price-amount { font-size: 36px; font-weight: 900; color: #A855F7; margin-bottom: 20px; }
.price-features { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.price-features li { color: #D4D4D8; font-size: 14px; padding-left: 20px; position: relative; }
.price-features li.feature-highlight { color: #A855F7; font-weight: 600; }
.price-features li.feature-highlight::before { color: #A855F7; }
.price-features li.feature-locked { color: #ffffff25; }
.price-features li.feature-locked::before { color: #ffffff25; }

.price-table-wrap { margin-top: 48px; overflow-x: auto; }
.price-table {
    width: 100%; border-collapse: collapse;
    color: #D4D4D8; font-size: 14px;
    border-color: #ffffff15;
}
.price-table th, .price-table td {
    padding: 10px 14px; text-align: center;
    border: 1px solid #ffffff15;
}
.price-table thead tr { background: #1A1A2E; color: #fff; font-weight: 700; }
.price-table .table-section-header th {
    background: #13131F; color: #A855F7;
    font-size: 13px; font-weight: 700;
}
.price-table tbody tr:nth-child(even) { background: #0D0D1A; }
.price-table tbody tr:hover { background: #ffffff08; }
.tip-red { color: #E53333; }

.cta {
    position: relative; overflow: hidden;
    background: linear-gradient(135deg, #1A0A2E, #0A1A2E);
    text-align: center; padding: 80px 0;
}
.cta h2 { font-size: 48px; }
.cta p { color: #B0B0BA; font-size: 18px; margin-bottom: 32px; }

/* OPPORTUNITY target tags */
.opportunity .target .tags { gap: 12px; justify-content: flex-start; }
.opportunity .target .tag {
    background: #13131F; border-radius: 8px;
    padding: 12px 20px; font-size: 14px; color: #fff;
    gap: 8px;
}
.opportunity .target .tag.purple { border: 1px solid #A855F740; background: #13131F; }
.opportunity .target .tag.cyan   { border: 1px solid #06B6D440; background: #13131F; }
.opportunity .target .tag.pink   { border: 1px solid #EC489940; background: #13131F; }
.opportunity .target .tag.green  { border: 1px solid #22C55E40; background: #13131F; }
.target { margin-top: 48px; }
.target h3 { font-size: 24px; font-weight: 800; margin-bottom: 8px; }
.target > p { color: #B0B0BA; font-size: 14px; margin-bottom: 16px; }
.urgency {
    margin-top: 48px; background: #1A0A0A;
    border: 1px solid #EC489950; border-radius: 8px; padding: 28px;
}
.urgency h3 { font-size: 18px; font-weight: 700; margin-bottom: 12px; }
.urgency p { color: #B0B0BA; font-size: 14px; }
.highlight { color: #22C55E !important; margin-top: 12px; display: flex; align-items: center; gap: 6px; }

/* PAIN */
.solution { color: #A855F7 !important; font-size: 13px !important; }
.card.cyan .solution { color: #06B6D4 !important; }
.card.pink .solution { color: #EC4899 !important; }

/* TECH */
.tech-stack { color: #06B6D4; font-size: 13px; }

/* CASES */
.case-loc { color: #B0B0BA; font-size: 13px; }
.screenshot-row { margin-top: 24px; }
.screenshot-img { width: 100%; border-radius: 8px; cursor: zoom-in; border: 1px solid #ffffff15; }
.lightbox { display:none; position:fixed; inset:0; background:#000000cc; z-index:9999; align-items:center; justify-content:center; }
.lightbox.active { display:flex; }
.lightbox img { max-width:90vw; max-height:90vh; border-radius:8px; cursor:zoom-out; }

/* COMPARE TABLE */
.compare-table {
    border: 1px solid #ffffff15; border-radius: 8px;
    overflow: hidden; margin-bottom: 48px;
}
.compare-row {
    display: grid; grid-template-columns: 320px 1fr 1fr;
}
.compare-row.hdr {
    background: #1A1A2E; height: 52px;
    font-size: 14px; font-weight: 700;
}
.compare-row.hdr .col-us { color: #A855F7; background: #1E1040; }
.compare-row.hdr .col-them { color: #B0B0BA; }
.compare-row.odd  { background: #0D0D1A; }
.compare-row.even { background: #141428; }
.col-label, .col-us, .col-them {
    padding: 0 24px; height: 48px;
    display: flex; align-items: center; font-size: 13px;
}
.col-label { color: #fff; }
.col-us { color: #A855F7; }
.col-them { color: #B0B0BA; justify-content: center; }

/* BONUS */
.badge {
    display: inline-block; padding: 3px 8px;
    border-radius: 4px; font-size: 11px;
    align-self: flex-start;
}
.badge.purple { background: #A855F720; color: #A855F7; }
.badge.cyan   { background: #06B6D420; color: #06B6D4; }

.link-update { display: inline-flex; align-items: center; gap: 6px; color: #06B6D4; font-size: 13px; text-decoration: none; }

/* FAQ */
.faq-list { display: flex; flex-direction: column; gap: 16px; max-width: 800px; margin: 0 auto; }
.faq-item {
    background: #13131F; border: 1px solid #ffffff15;
    border-radius: 8px; padding: 24px;
}
.faq-item h3 { font-size: 16px; font-weight: 700; margin-bottom: 10px; }
.faq-item p { color: #B0B0BA; font-size: 14px; }

/* GUARANTEE */
.guarantee {
    background: #0A1A0A; border-top: 2px solid #22C55E50;
    display: flex; align-items: center; justify-content: center;
    gap: 40px; padding: 16px 80px; flex-wrap: wrap;
    color: #fff; font-size: 13px;
}

/* FOOTER */
.footer {
    background: #0A0A14; padding: 20px 80px;
    text-align: center;
}
.footer p { color: #B0B0BA; font-size: 13px; }
.footer a { color: #B0B0BA; text-decoration: none; }
.footer a:hover { color: #fff; }
.friend-link { margin-bottom: 12px; text-align: left; }
.friend-link a { color: #B0B0BA; font-size: 12px; margin: 0 8px; text-decoration: none; }
.friend-link a:hover { color: #fff; }
.friend-link span:last-child { display: none; }

.mobile-overlay {
    display: none;
    position: fixed; inset: 0; z-index: 98;
    background: #00000060;
}
.mobile-overlay.open { display: block; }

.card-hdr { display: flex; align-items: center; gap: 10px; }
.card-hdr h3 { margin: 0; }

i[data-lucide] { display: inline-flex; vertical-align: middle; flex-shrink: 0; }

/* HAMBURGER & MOBILE MENU */
.nav-hamburger {
    display: none;
    flex-direction: column; justify-content: center; gap: 5px;
    background: none; border: none; cursor: pointer; padding: 4px;
}
.nav-hamburger span {
    display: block; width: 24px; height: 2px; background: #fff; border-radius: 2px;
    transition: all 0.3s;
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
    display: none;
    flex-direction: column;
    background: #08080F;
    border-bottom: 1px solid #ffffff15;
    position: sticky; top: 72px; z-index: 99;
}
.mobile-menu.open { display: flex; }
.mobile-menu-link {
    padding: 14px 20px;
    color: #B0B0BA; font-size: 15px; text-decoration: none;
    border-bottom: 1px solid #ffffff08;
}
.mobile-menu-link:hover { color: #fff; background: #ffffff08; }

/* MOBILE */
@media (max-width: 768px) {
    .container { padding: 0 20px; }

    /* Nav */
    .nav-links, .nav-cta .link-secondary { display: none; }
    .nav-cta { gap: 8px; }

    /* Hero */
    .hero { padding: 60px 0 40px; }
    .hero h1 { font-size: 28px; }
    .hero .subtitle { font-size: 15px; }

    /* Stats */
    .stats { height: auto; padding: 20px 0; flex-wrap: wrap; gap: 16px; }
    .divider { display: none; }
    .stat { flex: 0 0 45%; }
    .num { font-size: 28px; }

    /* Sections */
    section { padding: 48px 0; }
    section h2 { font-size: 24px; }
    .cta h2 { font-size: 26px; }
    .desc { font-size: 14px; margin-bottom: 32px; }

    /* Grids */
    .grid-2, .grid-3, .grid-4, .price-cards { grid-template-columns: 1fr; }

    /* Compare table */
    .compare-table { font-size: 12px; }
    .compare-row { grid-template-columns: 100px 1fr 1fr; }
    .col-label, .col-us, .col-them { padding: 0 10px; font-size: 12px; height: auto; min-height: 48px; white-space: normal; }

    /* Guarantee */
    .guarantee { padding: 16px 20px; gap: 12px; justify-content: flex-start; }

    /* Footer */
    .footer { padding: 20px; }
}

/* LIGHTBOX */
.lightbox {
    display: flex; position: fixed; inset: 0; z-index: 1000;
    background: #000000cc; align-items: center; justify-content: center;
    cursor: zoom-out;
    opacity: 0; pointer-events: none; transition: opacity .25s;
}
.lightbox.open { opacity: 1; pointer-events: auto; }
.lightbox img {
    max-width: 90vw; max-height: 90vh; border-radius: 8px; box-shadow: 0 0 60px #00000080;
    transform: scale(0.7); opacity: 0; transition: transform .25s ease, opacity .25s;
}
.lightbox.open img { transform: scale(1); opacity: 1; }
.side-nav {
    position: fixed; right: 20px; top: 50%; transform: translateY(-50%);
    z-index: 200; display: flex; flex-direction: column; gap: 10px;
}
.side-dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: #ffffff30; border: 1px solid #ffffff40;
    cursor: pointer; transition: all .25s; position: relative;
}
.side-dot:hover, .side-dot.active {
    background: #A855F7; border-color: #A855F7;
    box-shadow: 0 0 8px #A855F780;
}
.side-dot.active { transform: scale(1.4); }
.side-dot::after {
    content: attr(title);
    position: absolute; right: 18px; top: 50%; transform: translateY(-50%);
    background: #1A1A2E; color: #fff; font-size: 12px;
    padding: 3px 8px; border-radius: 4px; white-space: nowrap;
    opacity: 0; pointer-events: none; transition: opacity .2s;
    border: 1px solid #ffffff15;
}
.side-dot:hover::after { opacity: 1; }
@media (max-width: 768px) { .side-nav { display: none; } }

/* DEMO */
.demo-section { padding: 80px 0; background: #050508; border-top: 2px solid #A855F750; }
.demo-contact {
    display: flex; gap: 32px; flex-wrap: wrap;
    background: #13131F; border: 1px solid #ffffff15; border-radius: 8px;
    padding: 16px 24px; margin-bottom: 48px; color: #B0B0BA; font-size: 14px;
}
.demo-list { display: flex; flex-direction: column; gap: 48px; }
.demo-item {
    display: grid; grid-template-columns: 280px 1fr; gap: 40px; align-items: center;
    background: #0D0D1A; border: 1px solid #ffffff15; border-radius: 12px; padding: 32px;
}
.demo-item-info { display: flex; flex-direction: column; gap: 12px; }
.demo-item-info h3 { font-size: 22px; font-weight: 800; }
.demo-tip { color: #B0B0BA; font-size: 14px; }
.demo-img-wrap img { width: 100%; border-radius: 8px; display: block; transition: transform .25s; }
.demo-img-wrap:hover img { transform: scale(1.02); }

/* PAGE HERO */
.page-hero {
    background: linear-gradient(135deg, #0A0A1A 0%, #0D1B3E 50%, #0A0A1A 100%);
    padding: 80px 0; text-align: center;
    border-bottom: 2px solid #A855F750;
}
.page-hero h1 { font-size: 40px; font-weight: 800; margin-bottom: 12px; }
.page-hero p { color: #B0B0BA; font-size: 16px; max-width: 960px; margin: 0 auto; line-height: 2; }

@media (max-width: 768px) {
    .demo-item { grid-template-columns: 1fr; }
    .demo-contact { flex-direction: column; gap: 8px; }
}

/* CONTACT */
.contact-section { padding: 80px 0; background: #050508; border-top: 2px solid #A855F750; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; margin-bottom: 48px; }
.contact-card {
    background: #0D0D1A; border: 1px solid #ffffff15; border-radius: 12px;
    padding: 40px; display: flex; flex-direction: column; gap: 16px;
}
.contact-card-icon { width: 56px; height: 56px; border-radius: 12px; background: #13131F; display: flex; align-items: center; justify-content: center; }
.contact-card h3 { font-size: 22px; font-weight: 800; }
.contact-desc { color: #B0B0BA; font-size: 14px; line-height: 1.7; }
.contact-info { display: flex; flex-direction: column; gap: 12px; margin-top: 8px; }
.contact-row { display: flex; align-items: center; gap: 12px; }
.contact-label { color: #B0B0BA; font-size: 14px; min-width: 110px; }
.contact-value { font-size: 16px; font-weight: 700; color: #fff; }
.contact-qrcode { display: flex; flex-direction: column; align-items: flex-start; gap: 8px; margin-top: 8px; }
.contact-qrcode img { width: 160px; border-radius: 8px; }
.contact-qrcode p { color: #B0B0BA; font-size: 13px; }
.contact-notice {
    background: #0D0D1A; border: 1px solid #ffffff15; border-radius: 12px;
    padding: 32px 40px;
}
.contact-notice h3 { font-size: 18px; font-weight: 700; margin-bottom: 16px; }
.contact-notice ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.contact-notice ul li { color: #B0B0BA; font-size: 14px; padding-left: 20px; position: relative; }
.contact-notice ul li::before { content: '·'; position: absolute; left: 0; color: #A855F7; font-size: 20px; line-height: 1; }

@media (max-width: 768px) {
    .contact-grid { grid-template-columns: 1fr; }
}

/* CHANGELOG */
.changelog-section { padding: 80px 0; background: #050508; border-top: 2px solid #A855F750; }
.changelog-wrap {
    max-width: 860px; margin: 0 auto;
    padding: 0 48px;
}
.api_document { position: relative; padding-left: 32px; }
.api_document::before {
    content: ''; position: absolute; left: 0; top: 0; bottom: 0;
    width: 2px; background: linear-gradient(180deg, #A855F7, #06B6D4 60%, #ffffff10);
}
.api_document p { color: #B0B0BA; font-size: 14px; line-height: 1.9; margin-bottom: 4px; }
/* version block: <b><span>date</span><span>name</span></b> */
.api_document b {
    display: flex; align-items: center; gap: 16px;
    margin: 40px 0 16px; position: relative;
}
.api_document b::before {
    content: ''; position: absolute; left: -38px; top: 50%; transform: translateY(-50%);
    width: 12px; height: 12px; border-radius: 50%;
    background: #52525B; border: 2px solid #3F3F46;
}
/* date span */
.api_document b span:first-child {
    font-size: 13px; font-weight: 600; color: #B0B0BA; white-space: nowrap;
}
/* version name span */
.api_document b span:last-child {
    display: inline-block;
    background: #1E1A2E; color: #A855F7;
    border: 1px solid #A855F740; border-radius: 4px;
    padding: 4px 14px; font-size: 14px; font-weight: 700;
}
/* latest version (orange class = most recent) */
.api_document b span.orange:first-child { color: #F97316; }
.api_document b span.orange:last-child {
    background: linear-gradient(90deg, #A855F7, #06B6D4);
    color: #fff; border: none;
    box-shadow: 0 4px 16px #A855F750;
}
.api_document b:has(span.orange)::before {
    background: #A855F7; border-color: #A855F7;
    box-shadow: 0 0 8px #A855F780;
    width: 14px; height: 14px; left: -39px;
}
@media (max-width: 768px) {
    .changelog-wrap { padding: 0 20px; }
    .api_document { padding-left: 24px; }
    .api_document b { flex-wrap: wrap; gap: 8px; }
    .api_document b::before { left: -30px; }
    .api_document b:has(span.orange)::before { left: -31px; }
}