:root {
    --ink: #eef0ff;
    --muted: #aab0cc;
    --bg: #0b0d1d;
    --panel: #141833;
    --panel-2: #1c2142;
    --line: rgba(214, 220, 255, 0.13);
    --violet: #7463ff;
    --cyan: #75dbff;
    --coral: #ffb86b;
    --max: 1180px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.7;
}

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

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

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    border-bottom: 1px solid var(--line);
    background: rgba(11, 13, 29, 0.92);
    backdrop-filter: blur(18px);
}

.nav-wrap {
    width: min(var(--max), calc(100% - 40px));
    margin: 0 auto;
    min-height: 74px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.brand img {
    width: 42px;
    height: 42px;
    object-fit: cover;
    border-radius: 12px;
}

.brand-name {
    color: #ffffff;
    font-size: 1.15rem;
}

.nav-toggle {
    display: none;
    border: 1px solid var(--line);
    border-radius: 9px;
    padding: 7px 10px;
    background: var(--panel);
    color: var(--ink);
    cursor: pointer;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.nav-links a {
    display: block;
    padding: 8px 12px;
    border-radius: 8px;
    color: var(--muted);
    font-size: 0.94rem;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
    background: var(--panel-2);
    color: #ffffff;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 44px;
    padding: 0 18px;
    border: 1px solid transparent;
    border-radius: 9px;
    font-weight: 700;
    cursor: pointer;
    transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-primary {
    background: var(--violet);
    color: #ffffff;
    box-shadow: 0 8px 22px rgba(116, 99, 255, 0.27);
}

.btn-primary:hover {
    background: #897bff;
}

.btn-secondary {
    border-color: var(--line);
    background: rgba(255, 255, 255, 0.03);
    color: var(--ink);
}

.btn-secondary:hover {
    border-color: rgba(117, 219, 255, 0.5);
    background: rgba(117, 219, 255, 0.08);
}

.container {
    width: min(var(--max), calc(100% - 40px));
    margin: 0 auto;
}

.hero {
    padding: 84px 0 70px;
    overflow: hidden;
    background:
        radial-gradient(circle at 88% 20%, rgba(117, 219, 255, 0.12), transparent 34%),
        radial-gradient(circle at 8% 22%, rgba(116, 99, 255, 0.15), transparent 32%);
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(310px, 0.95fr);
    gap: 54px;
    align-items: center;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--cyan);
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.eyebrow::before {
    content: "";
    width: 24px;
    height: 2px;
    background: var(--coral);
}

h1,
h2,
h3 {
    margin: 0;
    line-height: 1.2;
    letter-spacing: 0;
}

h1 {
    margin-top: 16px;
    max-width: 640px;
    font-size: clamp(2.4rem, 6vw, 4.5rem);
}

h2 {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
}

h3 {
    font-size: 1.15rem;
}

.hero-copy {
    max-width: 640px;
    margin: 20px 0 0;
    color: var(--muted);
    font-size: 1.08rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 28px;
}

.hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    margin-top: 26px;
    color: var(--muted);
    font-size: 0.9rem;
}

.hero-meta strong {
    display: block;
    color: var(--ink);
    font-size: 1.1rem;
}

.hero-visual {
    position: relative;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    align-items: end;
}

.phone-shot {
    width: 100%;
    max-width: 180px;
    margin: 0 auto;
    overflow: hidden;
    border: 1px solid rgba(238, 240, 255, 0.18);
    border-radius: 19px;
    background: #090b16;
    box-shadow: 0 24px 55px rgba(0, 0, 0, 0.4);
}

.phone-shot:nth-child(2) {
    transform: translateY(-30px);
}

.phone-shot img {
    width: 100%;
    height: auto;
}

.section {
    padding: 84px 0;
}

.section-dark {
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    background: #0f1227;
}

.section-heading {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 28px;
}

.section-heading a {
    color: var(--cyan);
    font-size: 0.93rem;
}

.section-note {
    max-width: 720px;
    margin: 14px 0 0;
    color: var(--muted);
}

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

.feature-card,
.stat-card,
.quote-card,
.step-card,
.faq-item,
.info-panel {
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--panel);
}

.feature-card {
    padding: 24px;
}

.feature-icon {
    display: inline-grid;
    width: 40px;
    height: 40px;
    place-items: center;
    margin-bottom: 18px;
    border-radius: 10px;
    background: rgba(117, 219, 255, 0.12);
    color: var(--cyan);
    font-weight: 800;
}

.feature-card p,
.quote-card p,
.step-card p,
.info-panel p {
    margin: 10px 0 0;
    color: var(--muted);
}

.showcase-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 24px;
    align-items: stretch;
}

.showcase-main,
.showcase-side {
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--panel);
    overflow: hidden;
}

.showcase-main {
    display: grid;
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    gap: 22px;
    padding: 24px;
    align-items: center;
}

.showcase-main img {
    width: 100%;
    max-width: 230px;
    margin: 0 auto;
}

.showcase-main p,
.showcase-side p {
    margin: 10px 0 0;
    color: var(--muted);
}

.showcase-side {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    padding: 18px;
}

.showcase-side figure {
    margin: 0;
}

.showcase-side img {
    width: 100%;
    max-width: 170px;
    margin: 0 auto;
}

figcaption {
    margin-top: 10px;
    color: var(--muted);
    font-size: 0.87rem;
    text-align: center;
}

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

.stat-card {
    padding: 20px;
}

.stat-card strong {
    display: block;
    color: var(--coral);
    font-size: 1.8rem;
}

.stat-card span {
    color: var(--muted);
    font-size: 0.9rem;
}

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

.quote-card {
    padding: 22px;
}

.quote-card cite {
    display: block;
    margin-top: 16px;
    color: var(--cyan);
    font-size: 0.9rem;
    font-style: normal;
}

.page-hero {
    padding: 70px 0 52px;
    border-bottom: 1px solid var(--line);
    background: linear-gradient(120deg, rgba(116, 99, 255, 0.15), rgba(117, 219, 255, 0.05));
}

.page-hero p {
    max-width: 760px;
    margin: 18px 0 0;
    color: var(--muted);
    font-size: 1.04rem;
}

.article {
    max-width: 880px;
}

.article h2 {
    margin-top: 46px;
    font-size: 1.7rem;
}

.article h3 {
    margin-top: 26px;
    color: var(--cyan);
}

.article p,
.article li {
    color: var(--muted);
}

.article p {
    margin: 16px 0 0;
}

.article ul,
.article ol {
    margin: 16px 0 0;
    padding-left: 22px;
}

.steps {
    display: grid;
    gap: 14px;
    margin-top: 24px;
}

.step-card {
    display: grid;
    grid-template-columns: 48px 1fr;
    gap: 14px;
    padding: 20px;
}

.step-number {
    display: grid;
    width: 40px;
    height: 40px;
    place-items: center;
    border-radius: 50%;
    background: var(--violet);
    color: #ffffff;
    font-weight: 800;
}

.callout {
    margin-top: 24px;
    padding: 20px 22px;
    border-left: 3px solid var(--coral);
    background: rgba(255, 184, 107, 0.08);
    color: var(--ink);
}

.faq-list {
    display: grid;
    gap: 12px;
    margin-top: 24px;
}

.faq-item {
    padding: 0 20px;
}

.faq-item summary {
    padding: 19px 0;
    cursor: pointer;
    font-weight: 700;
}

.faq-item p {
    margin: 0 0 20px;
    color: var(--muted);
}

.link-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 28px;
}

.site-footer {
    padding: 40px 0 28px;
    border-top: 1px solid var(--line);
    background: #080a16;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr 1fr;
    gap: 30px;
}

.footer-title {
    margin: 0 0 12px;
    color: #ffffff;
    font-weight: 700;
}

.footer-copy,
.footer-links a,
.disclaimer {
    color: var(--muted);
    font-size: 0.9rem;
}

.footer-links {
    display: grid;
    gap: 8px;
}

.footer-links a:hover {
    color: var(--cyan);
}

.disclaimer {
    margin: 26px 0 0;
    padding-top: 20px;
    border-top: 1px solid var(--line);
}

.copyright {
    margin: 18px 0 0;
    color: #747b9a;
    font-size: 0.82rem;
}

.reveal {
    opacity: 0;
    transform: translateY(14px);
    transition: opacity 500ms ease, transform 500ms ease;
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 900px) {
    .hero-grid,
    .showcase-grid {
        grid-template-columns: 1fr;
    }

    .hero-visual {
        max-width: 580px;
    }

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

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 680px) {
    .nav-wrap,
    .container {
        width: min(var(--max), calc(100% - 28px));
    }

    .nav-toggle {
        display: inline-flex;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 74px;
        left: 14px;
        right: 14px;
        flex-direction: column;
        align-items: stretch;
        padding: 10px;
        border: 1px solid var(--line);
        border-radius: 10px;
        background: #10142a;
    }

    .nav-links.is-open {
        display: flex;
    }

    .hero {
        padding: 56px 0 52px;
    }

    h1 {
        font-size: 2.55rem;
    }

    .hero-visual {
        gap: 8px;
    }

    .phone-shot {
        border-radius: 14px;
    }

    .section {
        padding: 58px 0;
    }

    .section-heading {
        display: block;
    }

    .section-heading a {
        display: inline-block;
        margin-top: 12px;
    }

    .feature-grid,
    .stats-grid,
    .quote-grid,
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .showcase-main {
        grid-template-columns: 1fr;
    }

    .showcase-side {
        padding: 14px;
    }
}