:root {
    --accent: #ffac00;
    --bg: #f6f7fb;
    --ink: #1a1d2e;
    --line: #e3e6ef;
    --main: #3f51b5;
    --mut: #5d6273;
    --panel: #ffffff;
    --sans: system-ui, -apple-system, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg);
    color: var(--ink);
    font-family: var(--sans);
    font-size: 16px;
    line-height: 1.7;
}

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

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

.sutoz-shell {
    margin: 0 auto;
    max-width: 1080px;
    padding: 0 24px;
}

.sutoz-shell-narrow {
    max-width: 760px;
}

.sutoz-top {
    background-color: var(--panel);
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    z-index: 50;
}

.sutoz-top-in {
    align-items: center;
    display: flex;
    gap: 32px;
    height: 64px;
}

.sutoz-brand {
    align-items: center;
    display: flex;
    font-weight: 700;
    font-size: 18px;
    gap: 10px;
}

.sutoz-burger {
    background: none;
    border: none;
    color: var(--ink);
    cursor: pointer;
    display: none;
    font-size: 22px;
}

.sutoz-nav {
    display: flex;
    flex: 1;
    gap: 28px;
}

.sutoz-nav a {
    color: var(--mut);
    font-size: 14px;
    transition: color 0.2s;
}

.sutoz-nav a:hover {
    color: var(--main);
}

.sutoz-cta {
    align-items: center;
    background-color: var(--main);
    border-radius: 10px;
    color: #fff;
    display: inline-flex;
    font-size: 15px;
    font-weight: 600;
    gap: 8px;
    justify-content: center;
    padding: 12px 28px;
    transition: background-color 0.2s, transform 0.2s;
}

.sutoz-cta:hover {
    background-color: #34439c;
    transform: translateY(-1px);
}

.sutoz-cta-mini {
    font-size: 13px;
    padding: 8px 18px;
}

.sutoz-cta-ghost {
    background-color: transparent;
    border: 1px solid var(--line);
    color: var(--ink);
}

.sutoz-cta-ghost:hover {
    background-color: var(--panel);
    border-color: var(--main);
    color: var(--main);
}

.sutoz-cta-big {
    font-size: 17px;
    width: 100%;
}

.sutoz-lead {
    padding: 84px 0 64px;
    text-align: center;
}

.sutoz-lead-tag {
    color: var(--main);
    display: inline-block;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.12em;
    margin-bottom: 18px;
}

.sutoz-lead-tag::before {
    background-color: var(--accent);
    content: '';
    display: inline-block;
    height: 10px;
    margin-right: 10px;
    vertical-align: 1px;
    width: 4px;
}

.sutoz-lead h1 {
    font-size: 40px;
    font-weight: 700;
    letter-spacing: 0.02em;
    line-height: 1.3;
    margin: 0 auto 20px;
    max-width: 640px;
}

.sutoz-lead-txt {
    color: var(--mut);
    margin: 0 auto 34px;
    max-width: 560px;
}

.sutoz-lead-act {
    display: flex;
    gap: 14px;
    justify-content: center;
    margin-bottom: 56px;
}

.sutoz-lead-shots {
    display: flex;
    gap: 24px;
    justify-content: center;
}

.sutoz-lead-shots img {
    border: 1px solid var(--line);
    border-radius: 10px;
    box-shadow: 0 18px 40px rgba(63, 81, 181, 0.14);
    width: 224px;
}

.sutoz-lead-shots img:nth-child(2) {
    transform: translateY(-16px);
}

.sutoz-shelf {
    padding: 76px 0;
}

.sutoz-shelf-alt {
    background-color: var(--panel);
    border-bottom: 1px solid var(--line);
    border-top: 1px solid var(--line);
}

.sutoz-shelf-head {
    margin-bottom: 44px;
    max-width: 640px;
}

.sutoz-shelf-kick {
    color: var(--main);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.08em;
}

.sutoz-shelf-head h2 {
    font-size: 28px;
    letter-spacing: 0.02em;
    margin: 10px 0 12px;
}

.sutoz-shelf-head p {
    color: var(--mut);
}

.sutoz-figure {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
}

.sutoz-stat {
    background-color: var(--panel);
    border-bottom: 1px solid var(--line);
    border-top: 1px solid var(--line);
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 28px 32px;
}

.sutoz-stat + .sutoz-stat {
    border-left: 1px solid var(--line);
}

.sutoz-stat-label {
    color: var(--mut);
    font-size: 13px;
}

.sutoz-stat-val {
    color: var(--main);
    font-size: 22px;
    font-variant-numeric: tabular-nums;
    font-weight: 700;
}

.sutoz-flow {
    position: relative;
}

.sutoz-flow::before {
    background-color: var(--line);
    content: '';
    left: 50%;
    position: absolute;
    top: 0;
    transform: translateX(-50%);
    width: 2px;
}

.sutoz-flow-item {
    display: flex;
    gap: 20px;
    margin-bottom: 36px;
    position: relative;
}

.sutoz-flow-item:nth-child(odd) {
    justify-content: flex-end;
}

.sutoz-flow-item:nth-child(even) {
    flex-direction: row-reverse;
    justify-content: flex-end;
}

.sutoz-flow-node {
    align-items: center;
    background-color: var(--panel);
    border: 2px solid var(--accent);
    border-radius: 50%;
    color: var(--main);
    display: flex;
    flex-shrink: 0;
    font-size: 13px;
    font-weight: 700;
    height: 42px;
    justify-content: center;
    width: 42px;
}

.sutoz-cell {
    background-color: var(--panel);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 22px 26px;
    width: calc(50% - 36px);
}

.sutoz-cell h3 {
    align-items: center;
    display: flex;
    font-size: 17px;
    gap: 10px;
    margin-bottom: 8px;
}

.sutoz-cell h3 i {
    color: var(--main);
    font-size: 20px;
}

.sutoz-cell p {
    color: var(--mut);
    font-size: 15px;
}

.sutoz-rail {
    cursor: grab;
    display: flex;
    gap: 20px;
    overflow-x: auto;
    padding: 4px;
    scrollbar-width: none;
}

.sutoz-rail::-webkit-scrollbar {
    display: none;
}

.sutoz-rail.sutoz-drag {
    cursor: grabbing;
    user-select: none;
}

.sutoz-rail img {
    border: 1px solid var(--line);
    border-radius: 10px;
    flex-shrink: 0;
    width: 250px;
}

.sutoz-walk {
    display: grid;
    gap: 24px;
    grid-template-columns: repeat(4, 1fr);
    list-style: none;
}

.sutoz-walk-item {
    background-color: var(--panel);
    border: 1px solid var(--line);
    border-radius: 10px;
    border-top: 3px solid var(--accent);
    padding: 24px;
}

.sutoz-walk-num {
    color: var(--main);
    font-size: 14px;
    font-variant-numeric: tabular-nums;
    font-weight: 700;
}

.sutoz-walk-item h3 {
    font-size: 17px;
    margin: 8px 0;
}

.sutoz-walk-item p {
    color: var(--mut);
    font-size: 14px;
}

.sutoz-fold-item {
    background-color: var(--panel);
    border: 1px solid var(--line);
    border-radius: 10px;
    margin-bottom: 12px;
    overflow: hidden;
}

.sutoz-fold-item button {
    align-items: center;
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    font-family: var(--sans);
    font-size: 15px;
    font-weight: 600;
    justify-content: space-between;
    padding: 16px 20px;
    text-align: left;
    width: 100%;
}

.sutoz-fold-item button i {
    color: var(--mut);
    transition: transform 0.25s;
}

.sutoz-fold-item.sutoz-expanded button i {
    transform: rotate(180deg);
}

.sutoz-fold-body {
    padding: 0 20px;
}

.sutoz-fold-body p {
    color: var(--mut);
    font-size: 14px;
    padding-bottom: 16px;
}

html.sutoz-ready .sutoz-fold-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

html.sutoz-ready .sutoz-fold-item.sutoz-expanded .sutoz-fold-body {
    max-height: 320px;
}

.sutoz-voice-list {
    display: grid;
    gap: 14px;
    grid-template-columns: repeat(2, 1fr);
}

.sutoz-voice-item {
    background-color: var(--panel);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 18px 20px;
}

.sutoz-voice-top {
    align-items: center;
    display: flex;
    gap: 10px;
    justify-content: space-between;
    margin-bottom: 8px;
}

.sutoz-voice-name {
    font-size: 14px;
    font-weight: 600;
}

.sutoz-voice-time {
    color: var(--mut);
    font-size: 12px;
    font-variant-numeric: tabular-nums;
}

.sutoz-voice-item p {
    color: var(--mut);
    font-size: 14px;
}

.sutoz-get {
    padding-bottom: 88px;
}

.sutoz-get-card {
    background-color: var(--panel);
    border: 1px solid var(--line);
    border-radius: 10px;
    border-top: 4px solid var(--accent);
    box-shadow: 0 16px 36px rgba(26, 29, 46, 0.06);
    margin: 0 auto;
    max-width: 520px;
    padding: 36px;
    text-align: center;
}

.sutoz-get-app {
    align-items: center;
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 26px;
    text-align: left;
}

.sutoz-get-app img {
    border-radius: 12px;
    width: 64px;
}

.sutoz-get-app h2 {
    font-size: 22px;
}

.sutoz-get-meta {
    color: var(--mut);
    font-size: 13px;
    font-variant-numeric: tabular-nums;
}

.sutoz-get-note {
    color: var(--mut);
    font-size: 13px;
    margin-top: 14px;
}

.sutoz-get-note i {
    margin-right: 6px;
    vertical-align: -2px;
}

.sutoz-bottom {
    background-color: var(--panel);
    border-top: 1px solid var(--line);
    padding: 40px 0;
}

.sutoz-bottom-in {
    text-align: center;
}

.sutoz-bottom-brand {
    align-items: center;
    display: inline-flex;
    font-weight: 700;
    gap: 8px;
}

.sutoz-bottom-brand img {
    border-radius: 6px;
    width: 24px;
}

.sutoz-bottom-links {
    display: flex;
    gap: 22px;
    justify-content: center;
    margin: 16px 0;
}

.sutoz-bottom-links a {
    color: var(--mut);
    font-size: 13px;
}

.sutoz-bottom-links a:hover {
    color: var(--main);
}

.sutoz-bottom-note {
    color: var(--mut);
    font-size: 12px;
    margin: 0 auto;
    max-width: 520px;
}

.sutoz-bottom-copy {
    color: var(--mut);
    font-size: 12px;
    margin-top: 10px;
}

.sutoz-bottom-copy a:hover {
    color: var(--main);
}

html.sutoz-ready [data-anim].sutoz-on-view {
    animation: sutoz-rise 0.6s ease;
}

@keyframes sutoz-rise {
    from {
        opacity: 0;
        transform: translateY(18px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 900px) {
    .sutoz-figure-in {
        grid-template-columns: repeat(2, 1fr);
    }

    .sutoz-stat:nth-child(3) {
        border-left: none;
    }

    .sutoz-flow::before {
        left: 21px;
    }

    .sutoz-flow-item,
    .sutoz-flow-item:nth-child(even) {
        flex-direction: row;
        justify-content: flex-start;
    }

    .sutoz-cell {
        width: auto;
    }

    .sutoz-walk {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .sutoz-burger {
        display: block;
        margin-left: auto;
    }

    .sutoz-nav {
        background-color: var(--panel);
        border-bottom: 1px solid var(--line);
        display: none;
        flex-direction: column;
        gap: 0;
        left: 0;
        padding: 8px 24px 16px;
        position: absolute;
        right: 0;
        top: 64px;
    }

    .sutoz-nav.sutoz-expanded {
        display: flex;
    }

    .sutoz-nav a {
        padding: 12px 0;
    }

    .sutoz-cta-mini {
        display: none;
    }

    .sutoz-lead {
        padding: 56px 0 48px;
    }

    .sutoz-lead h1 {
        font-size: 28px;
    }

    .sutoz-lead-act {
        flex-wrap: wrap;
    }

    .sutoz-lead-shots {
        gap: 12px;
    }

    .sutoz-lead-shots img {
        width: 30vw;
    }

    .sutoz-lead-shots img:nth-child(2) {
        transform: translateY(-10px);
    }

    .sutoz-shelf {
        padding: 56px 0;
    }

    .sutoz-shelf-head h2 {
        font-size: 22px;
    }

    .sutoz-stat {
        padding: 20px 24px;
    }

    .sutoz-stat-val {
        font-size: 18px;
    }

    .sutoz-walk {
        grid-template-columns: 1fr;
    }

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

    .sutoz-voice-top {
        align-items: flex-start;
        flex-direction: column;
        gap: 2px;
    }

    .sutoz-rail img {
        width: 210px;
    }
}