:root {
    --xdd-deep: #070b16;
    --xdd-panel: #0d1423;
    --xdd-panel-soft: #141d30;
    --xdd-ink: #eef5ff;
    --xdd-muted: #9cacbf;
    --xdd-gold: #f6d47b;
    --xdd-blue: #8fdfff;
    --xdd-rose: #ff7aa8;
    --xdd-violet: #9a86ff;
    --xdd-line: rgba(159, 190, 228, 0.18);
}

.xiaodaidai-page .front-main {
    background:
        radial-gradient(circle at 9% 38%, rgba(255, 122, 168, 0.08), transparent 28rem),
        radial-gradient(circle at 92% 56%, rgba(143, 223, 255, 0.09), transparent 30rem),
        #f9fbff;
}

.xdd-hero {
    position: relative;
    min-height: 760px;
    padding: clamp(78px, 9vw, 124px) 0 82px;
    overflow: hidden;
    color: var(--xdd-ink);
    background:
        radial-gradient(circle at 72% 18%, rgba(143, 223, 255, 0.12), transparent 28rem),
        radial-gradient(circle at 18% 10%, rgba(255, 122, 168, 0.13), transparent 26rem),
        linear-gradient(150deg, #070b16 0%, #0a1020 58%, #080c17 100%);
    isolation: isolate;
}

.xdd-hero .page-aurora {
    z-index: -1;
    opacity: 0.72;
}

.xdd-hero__mesh,
.xdd-intelligence__grid,
.xdd-engine-console__grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(143, 223, 255, 0.055) 1px, transparent 1px),
        linear-gradient(90deg, rgba(143, 223, 255, 0.055) 1px, transparent 1px);
    background-size: 38px 38px;
    mask-image: radial-gradient(circle at center, #000, transparent 78%);
    pointer-events: none;
}

.xdd-hero__mesh {
    z-index: -1;
    opacity: 0.55;
}

.xdd-hero__inner {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 0.86fr) minmax(480px, 0.92fr);
    gap: clamp(42px, 7vw, 86px);
    align-items: center;
}

.xdd-hero__copy {
    position: relative;
    z-index: 2;
}

.xdd-hero__copy .eyebrow {
    color: var(--xdd-gold);
}

.xdd-hero__copy .eyebrow::before {
    background: linear-gradient(90deg, var(--xdd-gold), var(--xdd-blue));
}

.xdd-hero__copy h1 {
    max-width: 700px;
    font-size: clamp(46px, 6.4vw, 82px);
    line-height: 1.02;
    letter-spacing: -0.035em;
    color: #f7fbff;
    background: linear-gradient(106deg, #fff 2%, #f7e4ad 28%, #f5f8ff 50%, #aeeaff 72%, #ffc0d5 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 16px 36px rgba(143, 223, 255, 0.12));
}

.xdd-hero__copy > p {
    max-width: 720px;
    margin-top: 24px;
    color: rgba(226, 235, 246, 0.72);
    font-size: clamp(16px, 1.8vw, 19px);
    line-height: 1.85;
}

.xdd-hero__actions,
.xdd-final-cta__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 32px;
}

.xdd-hero .ui-button--ghost,
.xdd-final-cta .ui-button--ghost {
    color: rgba(239, 246, 255, 0.9);
    border-color: rgba(159, 190, 228, 0.18);
    background: rgba(255, 255, 255, 0.065);
    box-shadow: none;
    backdrop-filter: blur(12px);
}

.xdd-hero__assurance {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 18px;
    margin-top: 25px;
}

.xdd-hero__assurance span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: rgba(222, 232, 244, 0.64);
    font-size: 12px;
    font-weight: 760;
}

.xdd-hero__assurance i {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--xdd-blue);
    box-shadow: 0 0 14px rgba(143, 223, 255, 0.82);
}

.xdd-intelligence {
    position: relative;
    min-width: 0;
    border: 1px solid rgba(159, 190, 228, 0.18);
    border-radius: 22px;
    overflow: hidden;
    background:
        linear-gradient(150deg, rgba(16, 24, 41, 0.92), rgba(8, 13, 25, 0.94)),
        radial-gradient(circle at 50% 42%, rgba(143, 223, 255, 0.14), transparent 20rem);
    box-shadow: 0 46px 130px rgba(0, 0, 0, 0.34), inset 0 1px 0 rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(24px) saturate(1.2);
}

.xdd-intelligence__topbar {
    min-height: 52px;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 14px;
    padding: 0 18px;
    border-bottom: 1px solid var(--xdd-line);
    background: rgba(255, 255, 255, 0.025);
}

.xdd-intelligence__topbar > span {
    display: flex;
    gap: 5px;
}

.xdd-intelligence__topbar i {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.23);
}

.xdd-intelligence__topbar i:first-child {
    background: var(--xdd-rose);
}

.xdd-intelligence__topbar i:nth-child(2) {
    background: var(--xdd-gold);
}

.xdd-intelligence__topbar i:nth-child(3) {
    background: #70e0bd;
}

.xdd-intelligence__topbar b,
.xdd-intelligence__topbar em {
    color: rgba(226, 235, 246, 0.64);
    font-size: 10px;
    font-style: normal;
    letter-spacing: 0.12em;
}

.xdd-intelligence__topbar em {
    color: var(--xdd-gold);
    letter-spacing: 0.04em;
}

.xdd-intelligence__stage {
    position: relative;
    min-height: 520px;
    overflow: hidden;
}

.xdd-intelligence__stage::before {
    content: "";
    position: absolute;
    left: 50%;
    top: 48%;
    width: 360px;
    height: 360px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(143, 223, 255, 0.16), rgba(154, 134, 255, 0.05) 48%, transparent 72%);
    transform: translate(-50%, -50%);
    filter: blur(8px);
}

.xdd-intelligence__orbit {
    position: absolute;
    left: 50%;
    top: 48%;
    border-radius: 50%;
    border: 1px solid rgba(143, 223, 255, 0.17);
    transform: translate(-50%, -50%);
    pointer-events: none;
}

.xdd-intelligence__orbit::before,
.xdd-intelligence__orbit::after {
    content: "";
    position: absolute;
    top: 50%;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--xdd-blue);
    box-shadow: 0 0 18px rgba(143, 223, 255, 0.9);
}

.xdd-intelligence__orbit::before {
    left: -4px;
}

.xdd-intelligence__orbit::after {
    right: -4px;
}

.xdd-intelligence__orbit--outer {
    width: 360px;
    height: 360px;
    animation: xdd-spin 28s linear infinite;
}

.xdd-intelligence__orbit--inner {
    width: 262px;
    height: 262px;
    border-style: dashed;
    border-color: rgba(246, 212, 123, 0.16);
    animation: xdd-spin-reverse 22s linear infinite;
}

.xdd-intelligence__core {
    position: absolute;
    left: 50%;
    top: 48%;
    width: 168px;
    height: 168px;
    display: grid;
    place-items: center;
    align-content: center;
    gap: 3px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 50%;
    background:
        radial-gradient(circle at 35% 25%, rgba(255, 255, 255, 0.22), transparent 30%),
        linear-gradient(145deg, rgba(255, 122, 168, 0.32), rgba(154, 134, 255, 0.25) 46%, rgba(143, 223, 255, 0.2));
    transform: translate(-50%, -50%);
    box-shadow: 0 0 70px rgba(143, 223, 255, 0.2), inset 0 0 34px rgba(255, 255, 255, 0.08);
    animation: xdd-core-breathe 5.6s ease-in-out infinite;
}

.xdd-intelligence__core img {
    width: 50px;
    height: 50px;
    object-fit: contain;
    filter: drop-shadow(0 8px 16px rgba(255, 122, 168, 0.25));
}

.xdd-intelligence__core strong {
    font-size: 18px;
    letter-spacing: 0.03em;
}

.xdd-intelligence__core small {
    color: rgba(235, 243, 252, 0.58);
    font-size: 9px;
    letter-spacing: 0.08em;
}

.xdd-intelligence__pulse {
    position: absolute;
    inset: -18px;
    border: 1px solid rgba(143, 223, 255, 0.16);
    border-radius: 50%;
    animation: xdd-pulse 3.4s ease-out infinite;
}

.xdd-intelligence__engine {
    position: absolute;
    min-width: 82px;
    display: grid;
    justify-items: center;
    gap: 2px;
    padding: 8px 10px;
    border: 1px solid rgba(159, 190, 228, 0.18);
    border-radius: 10px;
    background: rgba(13, 20, 35, 0.86);
    box-shadow: 0 14px 28px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(12px);
    animation: xdd-node-float 4.8s ease-in-out infinite;
}

.xdd-intelligence__engine b {
    color: var(--xdd-gold);
    font-size: 12px;
    letter-spacing: 0.08em;
}

.xdd-intelligence__engine em {
    color: rgba(224, 234, 246, 0.58);
    font-size: 9px;
    font-style: normal;
}

.xdd-intelligence__engine--rc {
    left: 7%;
    top: 42%;
}

.xdd-intelligence__engine--svi {
    left: 28%;
    top: 16%;
    animation-delay: -1.2s;
}

.xdd-intelligence__engine--suhf {
    right: 27%;
    top: 16%;
    animation-delay: -2.2s;
}

.xdd-intelligence__engine--iae {
    right: 6%;
    top: 42%;
    animation-delay: -3.2s;
}

.xdd-intelligence__bubble {
    position: absolute;
    max-width: 212px;
    padding: 11px 14px;
    border-radius: 14px;
    color: rgba(239, 246, 255, 0.78);
    font-size: 11px;
    line-height: 1.55;
    backdrop-filter: blur(14px);
}

.xdd-intelligence__bubble--user {
    left: 5%;
    bottom: 7%;
    border: 1px solid rgba(246, 212, 123, 0.2);
    border-bottom-left-radius: 3px;
    background: rgba(246, 212, 123, 0.09);
}

.xdd-intelligence__bubble--assistant {
    right: 5%;
    bottom: 7%;
    border: 1px solid rgba(143, 223, 255, 0.2);
    border-bottom-right-radius: 3px;
    background: rgba(143, 223, 255, 0.08);
}

.xdd-intelligence__status {
    min-height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    padding: 10px 14px;
    border-top: 1px solid var(--xdd-line);
    color: rgba(223, 234, 247, 0.46);
    font-size: 9px;
    letter-spacing: 0.05em;
}

.xdd-intelligence__status i {
    width: 28px;
    height: 1px;
    background: linear-gradient(90deg, rgba(246, 212, 123, 0.18), rgba(143, 223, 255, 0.48));
}

.xdd-facts {
    position: relative;
    z-index: 3;
    margin-top: -30px;
    padding-bottom: 42px;
}

.xdd-facts__grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1px;
    overflow: hidden;
    border: 1px solid rgba(159, 190, 228, 0.15);
    border-radius: 16px;
    background: rgba(159, 190, 228, 0.14);
    box-shadow: 0 30px 86px rgba(11, 16, 31, 0.16);
}

.xdd-fact {
    min-width: 0;
    min-height: 172px;
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 15px;
    padding: 24px 22px;
    background: rgba(255, 255, 255, 0.96);
}

.xdd-fact > span {
    color: var(--rose);
    font-size: 10px;
    font-weight: 900;
    letter-spacing: 0.12em;
}

.xdd-fact small {
    color: #7c8aa0;
    font-size: 10px;
    font-weight: 850;
    letter-spacing: 0.05em;
}

.xdd-fact h2 {
    margin-top: 5px;
    font-size: 18px;
    line-height: 1.35;
}

.xdd-fact p {
    margin-top: 8px;
    color: #68758b;
    font-size: 12px;
    line-height: 1.72;
}

.xdd-capabilities {
    padding-top: 72px;
}

.xdd-capability-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.xdd-capability-card,
.xdd-development__grid article,
.xdd-boundary-grid article {
    position: relative;
    min-width: 0;
    overflow: hidden;
    border: 1px solid rgba(159, 190, 228, 0.2);
    border-radius: 16px;
    background:
        radial-gradient(circle at 100% 0%, rgba(143, 223, 255, 0.13), transparent 18rem),
        linear-gradient(145deg, rgba(255, 255, 255, 0.94), rgba(247, 250, 255, 0.86));
    box-shadow: 0 22px 64px rgba(37, 46, 70, 0.08);
}

.xdd-capability-card {
    min-height: 314px;
    padding: 24px;
    transition: transform 0.3s var(--ease), box-shadow 0.3s ease, border-color 0.3s ease;
}

.xdd-capability-card:hover {
    transform: translateY(-5px);
    border-color: rgba(143, 223, 255, 0.42);
    box-shadow: 0 30px 80px rgba(57, 72, 102, 0.13);
}

.xdd-capability-card__index {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 36px;
}

.xdd-capability-card__index span {
    color: var(--rose);
    font-size: 11px;
    font-weight: 900;
}

.xdd-capability-card__index i {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, rgba(255, 122, 168, 0.42), transparent);
}

.xdd-capability-card > small,
.xdd-development__grid small,
.xdd-boundary-grid small {
    color: #6f7f96;
    font-size: 10px;
    font-weight: 850;
    letter-spacing: 0.06em;
}

.xdd-capability-card h3,
.xdd-development__grid h3,
.xdd-boundary-grid h3 {
    margin-top: 7px;
    font-size: 21px;
    line-height: 1.35;
}

.xdd-capability-card p,
.xdd-development__grid p,
.xdd-boundary-grid p {
    margin-top: 12px;
    color: #66748a;
    font-size: 13px;
    line-height: 1.82;
}

.xdd-capability-card .tag-row em,
.xdd-engine-panel .tag-row em {
    border: 1px solid rgba(120, 183, 255, 0.16);
    background: rgba(120, 183, 255, 0.08);
    color: #546a8e;
}

.xdd-demo-section,
.xdd-engine-section {
    color: var(--xdd-ink);
    background:
        radial-gradient(circle at 12% 18%, rgba(255, 122, 168, 0.1), transparent 26rem),
        radial-gradient(circle at 87% 70%, rgba(143, 223, 255, 0.1), transparent 28rem),
        var(--xdd-deep);
}

.xdd-demo-section .section-head h2,
.xdd-engine-section .section-head h2 {
    background: linear-gradient(100deg, #fff 0%, #f6d47b 32%, #8fdfff 70%, #ffc2d7 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.xdd-demo-section .section-head p,
.xdd-engine-section .section-head p {
    color: rgba(221, 232, 246, 0.62);
}

.xdd-demo {
    display: grid;
    grid-template-columns: minmax(280px, 0.72fr) minmax(0, 1.45fr);
    gap: 1px;
    overflow: hidden;
    border: 1px solid var(--xdd-line);
    border-radius: 18px;
    background: rgba(159, 190, 228, 0.16);
    box-shadow: 0 40px 120px rgba(0, 0, 0, 0.28);
}

.xdd-demo__rail {
    display: grid;
    gap: 1px;
    align-content: start;
    background: rgba(159, 190, 228, 0.08);
}

.xdd-demo__tab {
    min-width: 0;
    min-height: 112px;
    display: grid;
    grid-template-columns: 38px minmax(0, 1fr);
    gap: 12px;
    align-items: center;
    padding: 16px;
    border: 0;
    border-left: 2px solid transparent;
    color: rgba(230, 238, 248, 0.76);
    text-align: left;
    background: rgba(12, 18, 31, 0.96);
    transition: background 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}

.xdd-demo__tab:hover,
.xdd-demo__tab.is-active {
    color: #fff;
    border-left-color: var(--xdd-gold);
    background:
        linear-gradient(90deg, rgba(246, 212, 123, 0.08), transparent 62%),
        rgba(17, 25, 42, 0.98);
}

.xdd-demo__tab > span {
    width: 38px;
    height: 38px;
    display: grid;
    place-items: center;
    border: 1px solid rgba(143, 223, 255, 0.2);
    border-radius: 50%;
    color: var(--xdd-blue);
    font-size: 10px;
    font-weight: 900;
}

.xdd-demo__tab div {
    min-width: 0;
}

.xdd-demo__tab small {
    display: block;
    color: rgba(246, 212, 123, 0.66);
    font-size: 9px;
    font-weight: 850;
    letter-spacing: 0.08em;
}

.xdd-demo__tab strong {
    display: block;
    margin-top: 5px;
    overflow: hidden;
    color: inherit;
    font-size: 12px;
    line-height: 1.55;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.xdd-demo__viewport {
    min-width: 0;
    min-height: 560px;
    padding: 22px;
    background:
        linear-gradient(rgba(159, 190, 228, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(159, 190, 228, 0.035) 1px, transparent 1px),
        #0b111f;
    background-size: 34px 34px;
}

.xdd-demo__notice,
.xdd-engine-console__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--xdd-line);
}

.xdd-demo__notice span,
.xdd-engine-console__head span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--xdd-gold);
    font-size: 10px;
    font-weight: 850;
    letter-spacing: 0.08em;
}

.xdd-demo__notice span i {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #71e1be;
    box-shadow: 0 0 16px rgba(113, 225, 190, 0.72);
}

.xdd-demo__notice em,
.xdd-engine-console__head em {
    color: rgba(221, 232, 246, 0.42);
    font-size: 9px;
    font-style: normal;
}

.xdd-demo__panel {
    min-height: 472px;
    display: grid;
    align-content: center;
    gap: 18px;
    padding: 34px clamp(8px, 4vw, 44px) 10px;
    animation: xdd-panel-in 0.48s var(--ease);
}

.xdd-demo__panel[hidden],
.xdd-engine-panel[hidden] {
    display: none;
}

.xdd-chat {
    max-width: 80%;
    padding: 16px 18px;
    border: 1px solid var(--xdd-line);
    border-radius: 16px;
}

.xdd-chat span {
    display: block;
    margin-bottom: 6px;
    color: rgba(226, 236, 248, 0.46);
    font-size: 9px;
    font-weight: 800;
    letter-spacing: 0.06em;
}

.xdd-chat p {
    color: rgba(239, 246, 255, 0.84);
    font-size: 14px;
    line-height: 1.72;
}

.xdd-chat--user {
    justify-self: end;
    border-bottom-right-radius: 3px;
    background: linear-gradient(145deg, rgba(246, 212, 123, 0.12), rgba(255, 122, 168, 0.08));
}

.xdd-chat--assistant {
    justify-self: start;
    border-bottom-left-radius: 3px;
    background: linear-gradient(145deg, rgba(143, 223, 255, 0.12), rgba(154, 134, 255, 0.08));
}

.xdd-demo__thinking {
    display: flex;
    align-items: center;
    gap: 5px;
    padding-left: 12px;
}

.xdd-demo__thinking span {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--xdd-blue);
    animation: xdd-thinking 1.4s ease-in-out infinite;
}

.xdd-demo__thinking span:nth-child(2) {
    animation-delay: 0.18s;
}

.xdd-demo__thinking span:nth-child(3) {
    animation-delay: 0.36s;
}

.xdd-demo__thinking em {
    margin-left: 7px;
    color: rgba(222, 233, 246, 0.36);
    font-size: 9px;
    font-style: normal;
}

.xdd-demo__checks {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.xdd-demo__checks span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 9px;
    border: 1px solid rgba(113, 225, 190, 0.13);
    border-radius: 999px;
    color: rgba(213, 233, 226, 0.58);
    background: rgba(113, 225, 190, 0.045);
    font-size: 9px;
}

.xdd-demo__checks i {
    color: #71e1be;
    font-style: normal;
}

.xdd-engine-section {
    border-top: 1px solid rgba(159, 190, 228, 0.08);
    background:
        radial-gradient(circle at 78% 14%, rgba(246, 212, 123, 0.08), transparent 26rem),
        linear-gradient(180deg, #070b16, #090f1d);
}

.xdd-engine-console {
    display: grid;
    grid-template-columns: minmax(420px, 0.95fr) minmax(0, 1.05fr);
    overflow: hidden;
    border: 1px solid var(--xdd-line);
    border-radius: 18px;
    background: #0b111f;
    box-shadow: 0 40px 120px rgba(0, 0, 0, 0.26);
}

.xdd-engine-console__visual {
    position: relative;
    min-height: 600px;
    overflow: hidden;
    border-right: 1px solid var(--xdd-line);
    background:
        radial-gradient(circle at 50% 34%, rgba(143, 223, 255, 0.12), transparent 21rem),
        #090f1b;
}

.xdd-engine-console__application {
    position: absolute;
    left: 50%;
    top: 13%;
    width: 190px;
    min-height: 120px;
    display: grid;
    place-items: center;
    align-content: center;
    border: 1px solid rgba(246, 212, 123, 0.22);
    border-radius: 16px;
    background:
        radial-gradient(circle at 50% 0%, rgba(246, 212, 123, 0.12), transparent 10rem),
        rgba(14, 22, 38, 0.92);
    transform: translateX(-50%);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.26);
}

.xdd-engine-console__application small {
    color: var(--xdd-gold);
    font-size: 9px;
    font-weight: 850;
    letter-spacing: 0.1em;
}

.xdd-engine-console__application strong {
    margin-top: 5px;
    font-size: 24px;
}

.xdd-engine-console__application span {
    margin-top: 3px;
    color: rgba(225, 235, 247, 0.48);
    font-size: 9px;
}

.xdd-engine-console__bus {
    position: absolute;
    left: 12%;
    right: 12%;
    top: 38%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(143, 223, 255, 0.45) 12%, rgba(246, 212, 123, 0.4) 50%, rgba(143, 223, 255, 0.45) 88%, transparent);
}

.xdd-engine-console__bus::before {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 0;
    width: 1px;
    height: 98px;
    background: linear-gradient(transparent, rgba(246, 212, 123, 0.4));
}

.xdd-engine-console__bus i {
    position: absolute;
    top: -3px;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--xdd-blue);
    box-shadow: 0 0 16px rgba(143, 223, 255, 0.8);
    animation: xdd-bus-signal 4.8s ease-in-out infinite;
}

.xdd-engine-console__bus i:nth-child(2) { animation-delay: -1.2s; }
.xdd-engine-console__bus i:nth-child(3) { animation-delay: -2.4s; }
.xdd-engine-console__bus i:nth-child(4) { animation-delay: -3.6s; }

.xdd-engine-console__nodes {
    position: absolute;
    left: 6%;
    right: 6%;
    bottom: 8%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.xdd-engine-node {
    min-width: 0;
    min-height: 92px;
    display: grid;
    grid-template-columns: 54px minmax(0, 1fr);
    gap: 10px;
    align-items: center;
    padding: 12px;
    border: 1px solid rgba(159, 190, 228, 0.15);
    border-radius: 12px;
    color: rgba(229, 238, 249, 0.68);
    text-align: left;
    background: rgba(16, 24, 41, 0.88);
    transition: border-color 0.25s ease, background 0.25s ease, transform 0.25s var(--ease);
}

.xdd-engine-node:hover,
.xdd-engine-node.is-active {
    border-color: rgba(143, 223, 255, 0.42);
    color: #fff;
    background: linear-gradient(145deg, rgba(143, 223, 255, 0.11), rgba(154, 134, 255, 0.08)), rgba(16, 24, 41, 0.94);
    transform: translateY(-2px);
}

.xdd-engine-node b {
    width: 54px;
    height: 54px;
    display: grid;
    place-items: center;
    border: 1px solid rgba(246, 212, 123, 0.22);
    border-radius: 50%;
    color: var(--xdd-gold);
    font-size: 10px;
    letter-spacing: 0.05em;
}

.xdd-engine-node span {
    overflow: hidden;
    font-size: 10px;
    font-weight: 780;
    line-height: 1.45;
    text-overflow: ellipsis;
}

.xdd-engine-console__details {
    min-width: 0;
    min-height: 600px;
    padding: 26px;
    background: linear-gradient(160deg, rgba(15, 23, 39, 0.98), rgba(9, 15, 27, 0.98));
}

.xdd-engine-panel {
    min-height: 510px;
    display: grid;
    align-content: center;
    padding: clamp(22px, 5vw, 54px) 12px;
    animation: xdd-panel-in 0.48s var(--ease);
}

.xdd-engine-panel > span {
    color: var(--xdd-gold);
    font-size: 10px;
    font-weight: 850;
    letter-spacing: 0.09em;
}

.xdd-engine-panel h3 {
    max-width: 520px;
    margin-top: 13px;
    font-size: clamp(28px, 4vw, 44px);
    line-height: 1.15;
}

.xdd-engine-panel > p {
    max-width: 560px;
    margin-top: 18px;
    color: rgba(222, 233, 246, 0.64);
    font-size: 14px;
    line-height: 1.85;
}

.xdd-engine-panel .tag-row {
    margin-top: 24px;
}

.xdd-engine-panel .tag-row em {
    color: rgba(211, 229, 249, 0.62);
    background: rgba(143, 223, 255, 0.055);
}

.xdd-engine-panel__flow {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 44px;
    padding-top: 18px;
    border-top: 1px solid var(--xdd-line);
    color: rgba(223, 234, 247, 0.42);
    font-size: 9px;
}

.xdd-engine-panel__flow i {
    color: var(--xdd-blue);
    font-style: normal;
}

.xdd-development-section {
    background:
        radial-gradient(circle at 50% 0%, rgba(246, 212, 123, 0.09), transparent 30rem),
        #f9fbff;
}

.xdd-development__statement {
    position: relative;
    display: grid;
    justify-items: center;
    padding: 36px clamp(20px, 6vw, 72px);
    overflow: hidden;
    border: 1px solid rgba(246, 212, 123, 0.26);
    border-radius: 18px;
    text-align: center;
    background:
        radial-gradient(circle at 50% 0%, rgba(246, 212, 123, 0.18), transparent 24rem),
        linear-gradient(145deg, rgba(255, 255, 255, 0.97), rgba(255, 251, 240, 0.9));
    box-shadow: 0 28px 84px rgba(92, 72, 30, 0.08);
}

.xdd-development__statement::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(115deg, transparent 25%, rgba(255, 255, 255, 0.8) 48%, transparent 67%);
    transform: translateX(-110%);
    animation: xdd-statement-shine 7s var(--ease) infinite;
    pointer-events: none;
}

.xdd-development__statement span {
    color: #a07b25;
    font-size: 10px;
    font-weight: 900;
    letter-spacing: 0.1em;
}

.xdd-development__statement strong {
    max-width: 900px;
    margin-top: 9px;
    font-size: clamp(24px, 4vw, 42px);
    line-height: 1.25;
}

.xdd-development__statement p {
    max-width: 760px;
    margin-top: 13px;
    color: #6f7685;
    font-size: 13px;
}

.xdd-development__grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    margin-top: 18px;
}

.xdd-development__grid article {
    min-height: 260px;
    padding: 26px;
}

.xdd-development__grid article > span,
.xdd-boundary-grid article > span {
    display: block;
    margin-bottom: 30px;
    color: var(--rose);
    font-size: 10px;
    font-weight: 900;
    letter-spacing: 0.12em;
}

.xdd-boundary-section {
    color: var(--xdd-ink);
    background:
        radial-gradient(circle at 18% 12%, rgba(255, 122, 168, 0.08), transparent 25rem),
        linear-gradient(180deg, #0b111e, #070b15);
}

.xdd-boundary-section .section-head h2 {
    background: linear-gradient(100deg, #fff, #f6d47b 36%, #8fdfff 74%, #ffc2d7);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.xdd-boundary-section .section-head p {
    color: rgba(222, 233, 246, 0.6);
}

.xdd-boundary-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}

.xdd-boundary-grid article {
    min-height: 284px;
    padding: 24px;
    border-color: rgba(159, 190, 228, 0.14);
    background:
        radial-gradient(circle at 100% 0%, rgba(143, 223, 255, 0.09), transparent 17rem),
        rgba(16, 24, 41, 0.86);
    box-shadow: none;
}

.xdd-boundary-grid small {
    color: rgba(246, 212, 123, 0.62);
}

.xdd-boundary-grid h3 {
    color: rgba(244, 249, 255, 0.92);
}

.xdd-boundary-grid p {
    color: rgba(217, 229, 243, 0.56);
}

.xdd-final-cta {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 30px;
    align-items: center;
    margin-top: 68px;
    padding: 34px;
    border: 1px solid rgba(159, 190, 228, 0.15);
    border-radius: 18px;
    background:
        radial-gradient(circle at 12% 0%, rgba(255, 122, 168, 0.12), transparent 20rem),
        rgba(255, 255, 255, 0.045);
}

.xdd-final-cta > div > span {
    color: var(--xdd-gold);
    font-size: 10px;
    font-weight: 850;
    letter-spacing: 0.08em;
}

.xdd-final-cta h2 {
    margin-top: 7px;
    font-size: clamp(24px, 3.4vw, 38px);
    line-height: 1.25;
}

.xdd-final-cta p {
    margin-top: 10px;
    color: rgba(220, 231, 245, 0.54);
    font-size: 13px;
}

.xdd-final-cta__actions {
    justify-content: flex-end;
    margin-top: 0;
}

.xdd-demo__tab:focus-visible,
.xdd-engine-node:focus-visible,
.xiaodaidai-page .ui-button:focus-visible {
    outline: 2px solid var(--xdd-blue);
    outline-offset: 3px;
}

/* Shared Xiaodaidai entry cards used by the homepage, modules and about pages. */
.home-xiaodaidai,
.modules-xiaodaidai,
.about-rd {
    position: relative;
}

.home-xiaodaidai {
    color: var(--xdd-ink);
    background:
        radial-gradient(circle at 78% 12%, rgba(143, 223, 255, 0.12), transparent 28rem),
        radial-gradient(circle at 15% 60%, rgba(255, 122, 168, 0.09), transparent 24rem),
        var(--xdd-deep);
}

.home-xiaodaidai .section-head h2,
.modules-xiaodaidai .section-head h2 {
    background: linear-gradient(100deg, #fff 0%, #f6d47b 34%, #8fdfff 72%, #ffc2d7 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.home-xiaodaidai .section-head p,
.modules-xiaodaidai .section-head p {
    color: rgba(221, 232, 246, 0.6);
}

.home-xdd-spotlight,
.modules-xdd-layer {
    display: grid;
    grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
    gap: 20px;
    align-items: stretch;
}

.home-xdd-spotlight__core,
.modules-xdd-layer__diagram {
    position: relative;
    min-height: 390px;
    overflow: hidden;
    border: 1px solid var(--xdd-line);
    border-radius: 18px;
    background:
        radial-gradient(circle at 50% 45%, rgba(143, 223, 255, 0.14), transparent 19rem),
        linear-gradient(rgba(143, 223, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(143, 223, 255, 0.04) 1px, transparent 1px),
        #0b111f;
    background-size: auto, 34px 34px, 34px 34px, auto;
}

.home-xdd-spotlight__orb,
.modules-xdd-layer__core {
    position: absolute;
    left: 50%;
    top: 48%;
    width: 154px;
    height: 154px;
    display: grid;
    place-items: center;
    align-content: center;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 50%;
    color: #fff;
    background: linear-gradient(145deg, rgba(255, 122, 168, 0.3), rgba(154, 134, 255, 0.24), rgba(143, 223, 255, 0.2));
    transform: translate(-50%, -50%);
    box-shadow: 0 0 70px rgba(143, 223, 255, 0.18);
    animation: xdd-core-breathe 5.6s ease-in-out infinite;
}

.home-xdd-spotlight__orb img {
    width: 46px;
    height: 46px;
    object-fit: contain;
}

.home-xdd-spotlight__orb strong,
.modules-xdd-layer__core strong {
    margin-top: 4px;
    font-size: 17px;
}

.home-xdd-spotlight__orb small,
.modules-xdd-layer__core small {
    color: rgba(226, 236, 248, 0.5);
    font-size: 8px;
}

.home-xdd-spotlight__signal,
.modules-xdd-layer__engine {
    position: absolute;
    padding: 7px 10px;
    border: 1px solid rgba(159, 190, 228, 0.15);
    border-radius: 9px;
    color: rgba(227, 237, 249, 0.64);
    background: rgba(15, 23, 39, 0.88);
    font-size: 9px;
    font-weight: 800;
}

.home-command__app {
    position: absolute;
    left: 50%;
    top: 10%;
    z-index: 3;
    display: grid;
    justify-items: center;
    gap: 1px;
    padding: 8px 13px;
    border: 1px solid rgba(246, 212, 123, 0.22);
    border-radius: 10px;
    color: rgba(242, 248, 255, 0.84);
    background: rgba(12, 18, 31, 0.84);
    box-shadow: 0 14px 34px rgba(0, 0, 0, 0.2);
    transform: translateX(-50%);
    backdrop-filter: blur(12px);
}

.home-command__app b {
    color: var(--xdd-gold);
    font-size: 11px;
}

.home-command__app span {
    color: rgba(222, 233, 246, 0.48);
    font-size: 8px;
    letter-spacing: 0.06em;
}

.home-xdd-spotlight__signal--one { left: 8%; top: 18%; }
.home-xdd-spotlight__signal--two { right: 8%; top: 18%; }
.home-xdd-spotlight__signal--three { left: 8%; bottom: 14%; }
.home-xdd-spotlight__signal--four { right: 8%; bottom: 14%; }

.home-xdd-spotlight__content,
.modules-xdd-layer__content {
    display: grid;
    align-content: center;
    padding: clamp(26px, 5vw, 54px);
    border: 1px solid var(--xdd-line);
    border-radius: 18px;
    background:
        radial-gradient(circle at 100% 0%, rgba(246, 212, 123, 0.09), transparent 20rem),
        rgba(14, 22, 37, 0.92);
}

.home-xdd-spotlight__content > span,
.modules-xdd-layer__content > span {
    color: var(--xdd-gold);
    font-size: 10px;
    font-weight: 850;
    letter-spacing: 0.09em;
}

.home-xdd-spotlight__content h3,
.modules-xdd-layer__content h3 {
    margin-top: 10px;
    color: #f4f8ff;
    font-size: clamp(28px, 4vw, 44px);
    line-height: 1.2;
}

.home-xdd-spotlight__content > p,
.modules-xdd-layer__content > p {
    margin-top: 16px;
    color: rgba(222, 233, 246, 0.62);
    font-size: 14px;
    line-height: 1.85;
}

.home-xdd-spotlight__highlights,
.modules-xdd-layer__highlights {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin-top: 24px;
}

.home-xdd-spotlight__highlights span,
.modules-xdd-layer__highlights span {
    padding: 9px 10px;
    border: 1px solid rgba(143, 223, 255, 0.12);
    border-radius: 8px;
    color: rgba(213, 229, 248, 0.6);
    background: rgba(143, 223, 255, 0.04);
    font-size: 10px;
}

.home-xdd-spotlight__content .ui-button,
.modules-xdd-layer__content .ui-button {
    justify-self: start;
    margin-top: 26px;
}

.modules-xiaodaidai {
    color: var(--xdd-ink);
    background:
        radial-gradient(circle at 80% 18%, rgba(143, 223, 255, 0.1), transparent 25rem),
        linear-gradient(180deg, #070b16, #0a1020);
}

.modules-xdd-layer__engine--one { left: 7%; bottom: 13%; }
.modules-xdd-layer__engine--two { left: 30%; bottom: 7%; }
.modules-xdd-layer__engine--three { right: 27%; bottom: 7%; }
.modules-xdd-layer__engine--four { right: 5%; bottom: 13%; }

.modules-xdd-layer__diagram::after {
    content: "专项能力矩阵与基础能力";
    position: absolute;
    left: 50%;
    bottom: 28%;
    color: rgba(246, 212, 123, 0.52);
    font-size: 8px;
    font-weight: 850;
    letter-spacing: 0.1em;
    transform: translateX(-50%);
}

.about-rd {
    background:
        radial-gradient(circle at 50% 0%, rgba(246, 212, 123, 0.09), transparent 28rem),
        rgba(248, 251, 255, 0.72);
}

.about-rd__statement {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 24px;
    align-items: center;
    padding: 30px;
    border: 1px solid rgba(246, 212, 123, 0.24);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.88);
    box-shadow: 0 22px 68px rgba(79, 65, 39, 0.08);
}

.about-rd__seal {
    width: 94px;
    height: 94px;
    display: grid;
    place-items: center;
    border: 1px solid rgba(217, 169, 58, 0.34);
    border-radius: 50%;
    color: #9d7722;
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 0.08em;
    background: radial-gradient(circle, rgba(246, 212, 123, 0.18), transparent 70%);
}

.about-rd__statement h3 {
    font-size: clamp(24px, 3.4vw, 38px);
    line-height: 1.28;
}

.about-rd__statement p {
    margin-top: 10px;
    color: #6d788b;
    font-size: 13px;
    line-height: 1.8;
}

.about-rd__grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    margin-top: 16px;
}

.about-rd__grid article {
    min-height: 210px;
    padding: 24px;
    border: 1px solid rgba(159, 190, 228, 0.18);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.86);
}

.about-rd__grid span {
    color: var(--rose);
    font-size: 10px;
    font-weight: 900;
}

.about-rd__grid h3 {
    margin-top: 24px;
    font-size: 19px;
}

.about-rd__grid p {
    margin-top: 10px;
    color: #68758a;
    font-size: 13px;
    line-height: 1.78;
}

.xdd-upgrade-matrix {
    margin-top: clamp(30px, 5vw, 54px);
}

.xdd-upgrade-loop {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 10px;
    padding: 14px;
    border: 1px solid rgba(143, 223, 255, 0.18);
    border-radius: 16px;
    background: rgba(7, 13, 25, 0.78);
    box-shadow: inset 0 1px rgba(255, 255, 255, 0.035);
}

.xdd-upgrade-loop > i {
    display: none;
}

.xdd-upgrade-loop > span {
    position: relative;
    min-width: 0;
    display: flex;
    gap: 9px;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 8px 10px;
    border: 1px solid rgba(246, 212, 123, 0.14);
    border-radius: 10px;
    color: rgba(235, 244, 255, 0.8);
    background: linear-gradient(145deg, rgba(246, 212, 123, 0.08), rgba(143, 223, 255, 0.05));
    font-size: 12px;
    font-weight: 760;
    text-align: center;
}

.xdd-upgrade-loop > span:not(:last-of-type)::after {
    content: "→";
    position: absolute;
    z-index: 2;
    right: -11px;
    color: rgba(143, 223, 255, 0.58);
    font-size: 11px;
}

.xdd-upgrade-loop b {
    color: var(--xdd-gold);
    font-size: 9px;
    letter-spacing: 0.08em;
}

.xdd-upgrade-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    margin-top: 16px;
}

.xdd-upgrade-card {
    min-width: 0;
    min-height: 330px;
    display: flex;
    flex-direction: column;
    padding: clamp(20px, 2.8vw, 28px);
    overflow: hidden;
    border: 1px solid rgba(159, 190, 228, 0.16);
    border-radius: 16px;
    background:
        radial-gradient(circle at 100% 0%, rgba(143, 223, 255, 0.08), transparent 17rem),
        linear-gradient(155deg, rgba(18, 28, 47, 0.96), rgba(9, 15, 27, 0.98));
    box-shadow: 0 24px 70px rgba(0, 0, 0, 0.16);
}

.xdd-upgrade-card--hub {
    grid-column: 1 / -1;
    min-height: 0;
    border-color: rgba(246, 212, 123, 0.28);
    background:
        radial-gradient(circle at 12% 0%, rgba(246, 212, 123, 0.13), transparent 23rem),
        radial-gradient(circle at 90% 100%, rgba(143, 223, 255, 0.12), transparent 25rem),
        linear-gradient(145deg, rgba(20, 28, 46, 0.98), rgba(9, 15, 27, 0.98));
}

.xdd-upgrade-card__meta {
    min-width: 0;
    display: flex;
    gap: 10px;
    align-items: center;
    justify-content: space-between;
}

.xdd-upgrade-card__meta span {
    color: var(--xdd-gold);
    font-size: 9px;
    font-weight: 850;
    letter-spacing: 0.08em;
}

.xdd-upgrade-card__meta em {
    flex: 0 0 auto;
    padding: 5px 8px;
    border: 1px solid rgba(255, 122, 168, 0.28);
    border-radius: 999px;
    color: #ffd2e1;
    background: rgba(255, 122, 168, 0.09);
    font-size: 9px;
    font-style: normal;
    font-weight: 760;
}

.xdd-upgrade-card h3 {
    margin-top: 20px;
    color: #f5f9ff;
    font-size: clamp(20px, 2.2vw, 27px);
    line-height: 1.28;
    overflow-wrap: anywhere;
}

.xdd-upgrade-card__body {
    display: grid;
    gap: 16px;
    margin-top: auto;
    padding-top: 26px;
}

.xdd-upgrade-card--hub .xdd-upgrade-card__body {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.xdd-upgrade-card__body > div {
    min-width: 0;
    padding-top: 13px;
    border-top: 1px solid rgba(159, 190, 228, 0.13);
}

.xdd-upgrade-card__body small {
    color: rgba(143, 223, 255, 0.72);
    font-size: 9px;
    font-weight: 820;
    letter-spacing: 0.08em;
}

.xdd-upgrade-card__body p {
    margin-top: 7px;
    color: rgba(222, 233, 246, 0.68);
    font-size: 13px;
    line-height: 1.75;
    overflow-wrap: anywhere;
}

.xdd-upgrade-foundation {
    display: grid;
    grid-template-columns: minmax(210px, 0.72fr) minmax(280px, 0.92fr) minmax(0, 1.5fr);
    gap: 22px;
    align-items: center;
    margin-top: 16px;
    padding: 20px 24px;
    border: 1px solid rgba(159, 190, 228, 0.15);
    border-radius: 14px;
    background: rgba(12, 19, 33, 0.82);
}

.xdd-upgrade-foundation span {
    color: var(--xdd-gold);
    font-size: 10px;
    font-weight: 850;
    letter-spacing: 0.08em;
}

.xdd-upgrade-foundation strong {
    color: rgba(239, 246, 255, 0.84);
    font-size: 14px;
    overflow-wrap: anywhere;
}

.xdd-upgrade-foundation p {
    color: rgba(207, 221, 238, 0.58);
    font-size: 12px;
    line-height: 1.72;
}

@keyframes xdd-spin {
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

@keyframes xdd-spin-reverse {
    to { transform: translate(-50%, -50%) rotate(-360deg); }
}

@keyframes xdd-core-breathe {
    0%, 100% { box-shadow: 0 0 52px rgba(143, 223, 255, 0.14), inset 0 0 28px rgba(255, 255, 255, 0.06); }
    50% { box-shadow: 0 0 88px rgba(143, 223, 255, 0.27), inset 0 0 38px rgba(255, 255, 255, 0.11); }
}

@keyframes xdd-pulse {
    0% { opacity: 0.7; transform: scale(0.86); }
    100% { opacity: 0; transform: scale(1.18); }
}

@keyframes xdd-node-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-7px); }
}

@keyframes xdd-thinking {
    0%, 100% { opacity: 0.28; transform: translateY(0); }
    50% { opacity: 1; transform: translateY(-3px); }
}

@keyframes xdd-panel-in {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes xdd-bus-signal {
    0% { left: 0; opacity: 0; }
    18% { opacity: 1; }
    82% { opacity: 1; }
    100% { left: calc(100% - 7px); opacity: 0; }
}

@keyframes xdd-statement-shine {
    0%, 72% { transform: translateX(-110%); }
    100% { transform: translateX(110%); }
}

@media (max-width: 1080px) {
    .xdd-hero__inner,
    .home-xdd-spotlight,
    .modules-xdd-layer {
        grid-template-columns: 1fr;
    }

    .xdd-hero__copy {
        max-width: 850px;
        justify-self: center;
        text-align: center;
    }

    .xdd-hero__copy h1,
    .xdd-hero__copy > p {
        margin-left: auto;
        margin-right: auto;
    }

    .xdd-hero__actions,
    .xdd-hero__assurance {
        justify-content: center;
    }

    .xdd-intelligence {
        width: min(100%, 700px);
        justify-self: center;
    }

    .xdd-facts__grid,
    .xdd-boundary-grid {
        grid-template-columns: 1fr 1fr;
    }

    .xdd-engine-console {
        grid-template-columns: 1fr;
    }

    .xdd-engine-console__visual {
        min-height: 560px;
        border-right: 0;
        border-bottom: 1px solid var(--xdd-line);
    }

    .xdd-engine-console__details,
    .xdd-engine-panel {
        min-height: 0;
    }

    .xdd-engine-panel {
        padding: 46px 14px 22px;
    }

    .xdd-final-cta {
        grid-template-columns: 1fr;
    }

    .xdd-final-cta__actions {
        justify-content: flex-start;
    }

    .xdd-upgrade-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .xdd-upgrade-foundation {
        grid-template-columns: 1fr 1fr;
    }

    .xdd-upgrade-foundation p {
        grid-column: 1 / -1;
    }
}

@media (max-width: 820px) {
    .xdd-capability-grid,
    .xdd-development__grid,
    .about-rd__grid {
        grid-template-columns: 1fr 1fr;
    }

    .xdd-demo {
        grid-template-columns: 1fr;
    }

    .xdd-demo__rail {
        grid-template-columns: 1fr 1fr;
    }

    .xdd-demo__tab {
        min-height: 92px;
        border-left: 0;
        border-top: 2px solid transparent;
    }

    .xdd-demo__tab:hover,
    .xdd-demo__tab.is-active {
        border-top-color: var(--xdd-gold);
    }

    .xdd-demo__viewport {
        min-height: 500px;
    }

    .xdd-demo__panel {
        min-height: 420px;
    }

    .xdd-upgrade-loop {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .xdd-upgrade-loop > span:not(:last-of-type)::after {
        display: none;
    }

    .xdd-upgrade-loop > span:last-of-type {
        grid-column: 1 / -1;
    }
}

@media (max-width: 620px) {
    .xiaodaidai-page .container,
    .home-xiaodaidai .container,
    .modules-xiaodaidai .container,
    .about-rd .container {
        width: min(100% - 24px, 1180px);
    }

    .xdd-hero {
        min-height: auto;
        padding: 62px 0 58px;
    }

    .xdd-hero__inner {
        gap: 38px;
    }

    .xdd-hero__copy h1 {
        font-size: clamp(36px, 11.2vw, 48px);
        line-height: 1.12;
    }

    .xdd-hero__copy > p {
        font-size: 14px;
        line-height: 1.8;
    }

    .xdd-hero__actions,
    .xdd-final-cta__actions {
        display: grid;
        grid-template-columns: 1fr;
        width: 100%;
    }

    .xdd-hero .ui-button,
    .xdd-final-cta .ui-button {
        width: 100%;
    }

    .xdd-upgrade-grid,
    .xdd-upgrade-card--hub .xdd-upgrade-card__body,
    .xdd-upgrade-foundation {
        grid-template-columns: 1fr;
    }

    .xdd-upgrade-card {
        min-height: 0;
        padding: 20px 18px;
    }

    .xdd-upgrade-card__body {
        margin-top: 0;
    }

    .xdd-upgrade-foundation p {
        grid-column: auto;
    }

    .xdd-intelligence__topbar {
        grid-template-columns: auto 1fr;
    }

    .xdd-intelligence__topbar em {
        display: none;
    }

    .xdd-intelligence__stage {
        min-height: 430px;
    }

    .xdd-intelligence__orbit--outer {
        width: 286px;
        height: 286px;
    }

    .xdd-intelligence__orbit--inner {
        width: 214px;
        height: 214px;
    }

    .xdd-intelligence__core {
        width: 138px;
        height: 138px;
    }

    .xdd-intelligence__engine {
        min-width: 66px;
        padding: 6px 8px;
    }

    .xdd-intelligence__engine--rc { left: 2%; }
    .xdd-intelligence__engine--iae { right: 2%; }
    .xdd-intelligence__engine--svi { left: 21%; top: 13%; }
    .xdd-intelligence__engine--suhf { right: 20%; top: 13%; }

    .xdd-intelligence__bubble {
        max-width: 158px;
        padding: 9px 10px;
        font-size: 9px;
    }

    .xdd-intelligence__status {
        gap: 5px;
        font-size: 8px;
    }

    .xdd-intelligence__status i {
        width: 12px;
    }

    .xdd-facts {
        margin-top: 0;
        padding: 12px 0 22px;
        background: #f9fbff;
    }

    .xdd-facts__grid,
    .xdd-capability-grid,
    .xdd-development__grid,
    .xdd-boundary-grid,
    .about-rd__grid {
        grid-template-columns: 1fr;
    }

    .xdd-fact {
        min-height: 0;
        padding: 20px 18px;
    }

    .xdd-capabilities {
        padding-top: 64px;
    }

    .xdd-capability-card,
    .xdd-development__grid article,
    .xdd-boundary-grid article {
        min-height: 0;
    }

    .xdd-capability-card__index,
    .xdd-development__grid article > span,
    .xdd-boundary-grid article > span {
        margin-bottom: 24px;
    }

    .xdd-demo__rail {
        display: flex;
        overflow-x: auto;
        scroll-snap-type: x mandatory;
        scrollbar-width: none;
    }

    .xdd-demo__rail::-webkit-scrollbar {
        display: none;
    }

    .xdd-demo__tab {
        min-width: 250px;
        scroll-snap-align: start;
    }

    .xdd-demo__viewport {
        min-height: 0;
        padding: 16px;
    }

    .xdd-demo__notice {
        align-items: flex-start;
        flex-direction: column;
        gap: 6px;
    }

    .xdd-demo__panel {
        min-height: 430px;
        padding: 30px 0 4px;
    }

    .xdd-chat {
        max-width: 92%;
    }

    .xdd-chat p {
        font-size: 13px;
    }

    .xdd-engine-console__visual {
        min-height: 520px;
    }

    .xdd-engine-console__application {
        top: 9%;
        width: 164px;
        min-height: 104px;
    }

    .xdd-engine-console__bus {
        top: 33%;
    }

    .xdd-engine-console__nodes {
        left: 4%;
        right: 4%;
        bottom: 5%;
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .xdd-engine-node {
        min-height: 70px;
        grid-template-columns: 44px minmax(0, 1fr);
    }

    .xdd-engine-node b {
        width: 44px;
        height: 44px;
    }

    .xdd-engine-console__details {
        padding: 20px 16px;
    }

    .xdd-engine-console__head {
        align-items: flex-start;
        flex-direction: column;
        gap: 5px;
    }

    .xdd-engine-panel {
        padding: 38px 0 12px;
    }

    .xdd-engine-panel__flow {
        flex-wrap: wrap;
    }

    .xdd-development__statement {
        padding: 28px 18px;
    }

    .xdd-final-cta {
        margin-top: 54px;
        padding: 26px 20px;
    }

    .home-xdd-spotlight__core,
    .modules-xdd-layer__diagram {
        min-height: 330px;
    }

    .home-command__app {
        top: 7%;
    }

    .home-xdd-spotlight__content,
    .modules-xdd-layer__content {
        padding: 26px 20px;
    }

    .home-xdd-spotlight__highlights,
    .modules-xdd-layer__highlights {
        grid-template-columns: 1fr;
    }

    .about-rd__statement {
        grid-template-columns: 1fr;
        justify-items: center;
        text-align: center;
        padding: 26px 20px;
    }
}

@media (max-width: 380px) {
    .xdd-intelligence__engine--svi,
    .xdd-intelligence__engine--suhf {
        top: 10%;
    }

    .xdd-intelligence__bubble--user {
        left: 3%;
    }

    .xdd-intelligence__bubble--assistant {
        right: 3%;
    }
}

@media (prefers-reduced-motion: reduce) {
    .xdd-intelligence__orbit,
    .xdd-intelligence__core,
    .xdd-intelligence__pulse,
    .xdd-intelligence__engine,
    .xdd-demo__thinking span,
    .xdd-engine-console__bus i,
    .xdd-development__statement::before,
    .home-xdd-spotlight__orb,
    .modules-xdd-layer__core {
        animation: none !important;
    }

    .xdd-demo__panel,
    .xdd-engine-panel {
        animation: none;
    }
}