:root {
    --bg-top: #0b1424;
    --bg-mid: #3f2e1f;
    --bg-amber: #a8733e;
    --bg-sky: #d9e9ff;
    --sheet-top: rgba(247, 250, 255, 0.985);
    --sheet-bottom: rgba(238, 245, 255, 0.985);
    --ink: #1d2b44;
    --ink-soft: #324663;
    --muted: #5f728e;
    --line: rgba(34, 53, 82, 0.1);
    --blue: #2f7dff;
    --amber: #d98b22;
    --card: rgba(255, 255, 255, 0.94);
    --card-strong: rgba(255, 255, 255, 0.98);
    --shadow-sheet: 0 28px 90px rgba(10, 20, 36, 0.26);
    --shadow-card: 0 14px 34px rgba(47, 60, 90, 0.08);
}

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

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    font-family: "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--ink);
    background:
        radial-gradient(circle at 15% 0%, rgba(124, 165, 255, 0.18), transparent 22%),
        radial-gradient(circle at 82% 12%, rgba(255, 214, 161, 0.14), transparent 16%),
        linear-gradient(180deg, var(--bg-top) 0%, #15243d 20%, var(--bg-mid) 44%, var(--bg-amber) 66%, var(--bg-sky) 100%);
    padding: 38px 18px 52px;
}

img {
    display: block;
    max-width: 100%;
}

a {
    color: inherit;
    text-decoration: none;
}

.container {
    max-width: 980px;
    margin: 0 auto;
    background: linear-gradient(180deg, var(--sheet-top) 0%, var(--sheet-bottom) 100%);
    border-radius: 32px;
    box-shadow: var(--shadow-sheet);
    overflow: hidden;
}

.hero-section,
.section {
    padding: 42px 46px;
}

.hero-section {
    background:
        radial-gradient(circle at top center, rgba(255, 255, 255, 0.62), transparent 56%),
        linear-gradient(180deg, #f7faff 0%, #eef4ff 100%);
    text-align: center;
}

.section {
    border-top: 1px solid rgba(255, 255, 255, 0.68);
}

.section-kicker,
.section-index,
.workflow-step span {
    font-family: "IBM Plex Mono", monospace;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.hero-mark {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2px;
    margin-bottom: 2px;
}

.hero-line {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ink);
    letter-spacing: -0.055em;
    line-height: 1;
}

.brand {
    font-size: clamp(3.7rem, 9vw, 5.8rem);
    font-weight: 800;
    background: linear-gradient(90deg, #12203c 0%, #223a6a 30%, #6aa6ff 50%, #223a6a 70%, #12203c 100%);
    background-size: 220% auto;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: wordmark-shine 9s linear infinite;
}

.descriptor {
    font-size: clamp(1.16rem, 2.15vw, 1.7rem);
    font-weight: 700;
    color: var(--ink-soft);
    margin: 0 auto;
    max-width: 760px;
}

.hero-summary {
    max-width: 760px;
    margin: 14px auto 0;
    font-size: 1rem;
    line-height: 1.72;
    color: var(--muted);
}

.hero-promise {
    max-width: 860px;
    margin: 10px auto 0;
    font-size: clamp(0.93rem, 1.35vw, 0.98rem);
    font-weight: 700;
    line-height: 1.5;
    color: var(--ink-soft);
    white-space: nowrap;
}

.hero-mouse {
    width: clamp(66px, 6vw, 84px);
    height: auto;
    margin-left: 4px;
    position: relative;
    top: 6px;
    filter: drop-shadow(0 10px 14px rgba(10, 20, 36, 0.16));
    transform-origin: center;
    animation: mouse-float 6.4s ease-in-out infinite;
}

.hero-proof {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px 18px;
    margin-top: 18px;
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--ink-soft);
}

.hero-proof span {
    position: relative;
}

.hero-proof span:not(:last-child)::after {
    content: "";
    position: absolute;
    right: -10px;
    top: 50%;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: rgba(29, 43, 68, 0.2);
    transform: translateY(-50%);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 22px;
    align-items: stretch;
    margin-top: 28px;
    text-align: left;
}

.hero-copy,
.hero-visual,
.media-card,
.audio-panel,
.text-card,
.mode-card,
.diagram-card,
.proof-card,
.workflow-step,
.hardware-card,
.model-card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 24px;
    box-shadow: var(--shadow-card);
}

.hero-copy,
.text-card,
.mode-card {
    padding: 26px 28px;
}

.hero-copy,
.hero-visual,
.media-card,
.text-card,
.mode-card,
.diagram-card,
.proof-card,
.workflow-step,
.hardware-card {
    position: relative;
    overflow: hidden;
    transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.hero-copy::before,
.hero-visual::before,
.media-card::before,
.text-card::before,
.mode-card::before,
.diagram-card::before,
.proof-card::before,
.workflow-step::before,
.hardware-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(115deg, transparent 0%, rgba(255, 255, 255, 0.38) 48%, transparent 72%);
    transform: translateX(-130%);
    transition: transform 0.65s ease;
    pointer-events: none;
}

.hero-copy:hover,
.hero-visual:hover,
.media-card:hover,
.text-card:hover,
.mode-card:hover,
.diagram-card:hover,
.proof-card:hover,
.workflow-step:hover,
.hardware-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 36px rgba(47, 60, 90, 0.12);
}

.hero-copy:hover::before,
.hero-visual:hover::before,
.media-card:hover::before,
.text-card:hover::before,
.mode-card:hover::before,
.diagram-card:hover::before,
.proof-card:hover::before,
.workflow-step:hover::before,
.hardware-card:hover::before {
    transform: translateX(130%);
}

.hero-copy p,
.text-card p,
.mode-card p,
.model-card p,
.section-intro,
.media-copy p,
.proof-card p,
.workflow-step p,
.architecture-node p,
.hardware-card p {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--muted);
}

.hero-copy p + p,
.text-card p + p {
    margin-top: 16px;
}

.hero-visual {
    padding: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(243, 248, 255, 0.98) 100%);
}

.hero-visual img {
    width: 100%;
    max-height: 310px;
    object-fit: contain;
    border-radius: 18px;
}

.section-head {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 18px;
    align-items: start;
    margin-bottom: 24px;
}

.section-index {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid rgba(47, 125, 255, 0.16);
    background: rgba(236, 244, 255, 0.86);
    color: var(--blue);
    font-size: 0.84rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.section-kicker {
    font-size: 0.78rem;
    color: var(--blue);
    margin-bottom: 8px;
}

h2,
h3 {
    letter-spacing: -0.04em;
    color: var(--ink);
}

h2 {
    font-size: clamp(2rem, 4vw, 3.1rem);
    line-height: 1.04;
    margin-bottom: 8px;
}

.single-line-heading {
    font-size: clamp(1.8rem, 3.25vw, 2.95rem);
    white-space: nowrap;
}

h3 {
    font-size: 1.22rem;
    line-height: 1.16;
    margin-bottom: 8px;
}

.model-card {
    padding: 28px 30px;
    background: linear-gradient(180deg, #eff6ff 0%, #f9fbff 100%);
}

.flow-track {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    margin-top: 18px;
    padding: 18px 20px;
    background: var(--card-strong);
    border: 1px solid var(--line);
    border-radius: 18px;
}

.flow-track span {
    position: relative;
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.95rem;
    color: var(--ink-soft);
}

.flow-track span:not(:last-child)::after {
    content: "\2192";
    margin-left: 16px;
    color: rgba(47, 125, 255, 0.9);
}

.media-grid,
.change-grid,
.proof-grid,
.hardware-grid {
    display: grid;
    gap: 20px;
}

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

.change-grid {
    align-items: start;
}

.media-card {
    padding: 22px;
    display: grid;
    gap: 16px;
}

.media-topline {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.media-label {
    font-size: 0.84rem;
    font-weight: 800;
    color: var(--blue);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.media-label.accent {
    color: var(--amber);
}

.inline-watch {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--ink-soft);
    white-space: nowrap;
    opacity: 0.86;
    transition: opacity 0.18s ease, transform 0.18s ease;
}

.inline-watch::after {
    content: "\2197";
    font-size: 0.86rem;
}

.inline-watch:hover {
    opacity: 1;
    transform: translateY(-1px);
}

.poster {
    overflow: hidden;
    border-radius: 18px;
    border: 1px solid rgba(29, 43, 68, 0.08);
}

.poster img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
}

.audio-panel {
    margin-top: 20px;
    padding: 22px 24px;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 18px;
    align-items: center;
}

.audio-panel audio {
    width: 100%;
}

.mode-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(249, 251, 255, 0.98) 100%);
}

.change-grid > .text-card,
.change-grid > .mode-card {
    height: 100%;
}

.compact-text-card {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.text-flow {
    display: grid;
    gap: 16px;
}

.micro-callout {
    padding: 12px 14px;
    border-radius: 16px;
    background: linear-gradient(180deg, rgba(235, 244, 255, 0.96) 0%, rgba(247, 250, 255, 0.98) 100%);
    border: 1px solid rgba(47, 125, 255, 0.1);
    font-size: 0.94rem;
    line-height: 1.65;
    color: var(--ink-soft);
}

.mode-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.mode-list article {
    padding: 12px 0 15px;
    border: 0;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
    background: transparent;
    transition: none;
}

.mode-list article:first-child {
    padding-top: 4px;
}

.mode-list article:last-child {
    border-bottom: 0;
    padding-bottom: 0;
}

.mode-list article:hover {
    transform: none;
    box-shadow: none;
}

.mode-list h3 {
    margin-bottom: 4px;
    background: linear-gradient(90deg, var(--ink) 0%, var(--ink) 34%, #6aa6ff 50%, var(--ink) 66%, var(--ink) 100%);
    background-size: 220% auto;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: heading-shine 7s linear infinite;
}

.mode-list p {
    max-width: 34ch;
}

.mode-visual {
    margin-top: auto;
    padding-top: 18px;
}

.mode-visual img {
    width: 100%;
    max-height: 186px;
    object-fit: cover;
    border-radius: 18px;
    border: 1px solid rgba(29, 43, 68, 0.08);
    background: linear-gradient(180deg, rgba(255, 252, 240, 0.98) 0%, rgba(255, 248, 223, 0.94) 100%);
}

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

.proof-card {
    overflow: hidden;
    padding: 0;
}

.proof-card img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}

.proof-card h3,
.proof-card p {
    padding-left: 22px;
    padding-right: 22px;
}

.proof-card h3 {
    padding-top: 20px;
}

.proof-card p {
    padding-bottom: 22px;
}

.support-figure {
    display: block;
    width: min(100%, 420px);
    margin-top: auto;
    padding-top: 18px;
    overflow: hidden;
    border-radius: 18px;
    border: 1px solid rgba(29, 43, 68, 0.08);
    background: linear-gradient(180deg, rgba(255, 252, 240, 0.98) 0%, rgba(255, 248, 223, 0.94) 100%);
}

.support-figure img {
    width: 100%;
    aspect-ratio: 2 / 1;
    object-fit: cover;
}

.support-figure figcaption {
    padding: 12px 16px 14px;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--ink-soft);
}

.diagram-card {
    padding: 22px 22px 18px;
    background: linear-gradient(180deg, #121b2d 0%, #0e1727 100%);
    border-color: rgba(157, 174, 203, 0.18);
    box-shadow: 0 18px 40px rgba(11, 20, 36, 0.28);
}

.diagram-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 16px;
}

.diagram-head .section-kicker,
.diagram-head h3 {
    color: #f7fbff;
}

.diagram-head .section-kicker {
    opacity: 0.86;
}

.diagram-badge {
    display: inline-flex;
    align-items: center;
    padding: 10px 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: #d9e4f8;
    font-size: 0.82rem;
    font-weight: 700;
    white-space: nowrap;
}

.mermaid {
    display: flex;
    justify-content: center;
    overflow-x: auto;
    padding: 8px 0 4px;
}

.mermaid svg {
    max-width: 100%;
    height: auto;
}

.workflow-row {
    position: relative;
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 14px;
    padding-top: 16px;
    margin-top: 18px;
}

.workflow-row::before {
    content: "";
    position: absolute;
    top: 38px;
    left: 32px;
    right: 32px;
    height: 1px;
    background: linear-gradient(90deg, rgba(47, 125, 255, 0.22), rgba(47, 125, 255, 0.1));
    z-index: 0;
}

.workflow-step {
    position: relative;
    padding: 22px 18px;
    min-height: 186px;
    z-index: 1;
}

.workflow-step span {
    display: inline-block;
    margin-bottom: 12px;
    font-size: 0.82rem;
    color: var(--blue);
}

.workflow-step.emphasis {
    background: linear-gradient(180deg, #edf5ff 0%, #f8fbff 100%);
    border-color: rgba(47, 125, 255, 0.14);
}

.architecture-board {
    display: grid;
    gap: 18px;
}

.architecture-outcomes {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.architecture-outcomes span {
    padding: 10px 14px;
    border-radius: 999px;
    background: rgba(242, 247, 255, 0.96);
    border: 1px solid rgba(47, 125, 255, 0.1);
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--ink-soft);
}

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

.hardware-card {
    padding: 22px;
    min-height: 172px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(245, 249, 255, 0.98) 100%);
}

strong {
    color: var(--ink-soft);
}

@keyframes heading-shine {
    0% {
        background-position: 220% center;
    }
    100% {
        background-position: -20% center;
    }
}

@keyframes wordmark-shine {
    0% {
        background-position: 220% center;
    }
    100% {
        background-position: -20% center;
    }
}

@keyframes mouse-float {
    0%,
    100% {
        transform: translateY(0px) rotate(-3deg);
    }
    50% {
        transform: translateY(-3px) rotate(-1deg);
    }
}

@media (max-width: 900px) {
    .hero-grid,
    .media-grid,
    .change-grid,
    .proof-grid,
    .hardware-grid,
    .workflow-row,
    .audio-panel {
        grid-template-columns: 1fr;
    }

    .mode-list {
        grid-template-columns: 1fr;
    }

    .single-line-heading {
        white-space: normal;
    }

    .audio-panel {
        align-items: start;
    }

    .workflow-row::before,
    .diagram-card::before {
        display: none;
    }

    .workflow-step {
        min-height: unset;
    }
}

@media (max-width: 720px) {
    body {
        padding: 20px 10px 36px;
    }

    .container {
        border-radius: 24px;
    }

    .hero-section,
    .section {
        padding: 28px 22px;
    }

    .hero-mark {
        gap: 10px;
        align-items: flex-end;
    }

    .descriptor {
        font-size: 1.08rem;
    }

    .hero-promise {
        white-space: normal;
    }

    .hero-proof {
        justify-content: flex-start;
        text-align: left;
    }

    .hero-proof span:not(:last-child)::after {
        display: none;
    }

    .media-topline {
        align-items: flex-start;
        flex-direction: column;
    }

    .diagram-head {
        flex-direction: column;
        align-items: flex-start;
    }

    .section-head {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .section-index {
        width: 40px;
        height: 40px;
    }

    h2 {
        font-size: clamp(1.7rem, 10vw, 2.35rem);
    }
}