* {
    box-sizing: border-box;
}

:root {
    --primary: rgb(70,139,223);
    --primary-dark: #1f5fa8;
    --primary-soft: #eaf4ff;
    --text: #152033;
    --muted: #64748b;
    --line: #dbe7f5;
    --card: #ffffff;
    --bg: #f7fbff;
    --shadow: 0 14px 36px rgba(27, 83, 143, 0.10);
    --radius: 22px;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(70,139,223,0.14), transparent 30rem),
        linear-gradient(180deg, #f8fcff 0%, #eef7ff 42%, #ffffff 100%);
    line-height: 1.75;
    overflow-x: hidden;
}

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

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

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(219,231,245,0.9);
}

.header-inner,
.footer-inner,
.footer-bottom,
.container {
    width: min(1120px, calc(100% - 32px));
    margin: 0 auto;
}

.header-inner {
    min-height: 68px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.logo,
.footer-logo {
    width: 38px;
    height: 38px;
    border-radius: 12px;
}

.brand-text {
    font-size: 18px;
    color: #10233f;
}

.nav-toggle {
    width: 42px;
    height: 42px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: #fff;
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    cursor: pointer;
}

.nav-toggle span {
    width: 18px;
    height: 2px;
    background: var(--primary-dark);
    border-radius: 99px;
}

.site-nav {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 76px;
    display: none;
    flex-direction: column;
    gap: 8px;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: #fff;
    box-shadow: var(--shadow);
}

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

.site-nav a {
    padding: 11px 12px;
    color: #334155;
    border-radius: 12px;
    font-size: 15px;
}

.site-nav a:hover {
    background: var(--primary-soft);
    color: var(--primary-dark);
}

.hero {
    padding: 44px 0 34px;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
    align-items: center;
}

.badge-row,
.tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 16px 0 0;
}

.badge,
.tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 12px;
    border-radius: 999px;
    background: rgba(70,139,223,0.10);
    color: var(--primary-dark);
    font-size: 13px;
    font-weight: 700;
}

.eyebrow {
    color: var(--primary);
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    font-size: 13px;
    margin-bottom: 10px;
}

h1,
h2,
h3 {
    line-height: 1.25;
    margin: 0;
    letter-spacing: -0.03em;
}

h1 {
    font-size: clamp(34px, 9vw, 60px);
    color: #10233f;
}

h2 {
    font-size: clamp(26px, 6vw, 38px);
    color: #10233f;
}

h3 {
    font-size: 20px;
    color: #13243a;
}

.lead {
    margin: 18px 0 0;
    color: #475569;
    font-size: 17px;
}

.hero-actions {
    margin-top: 26px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 14px;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 24px;
    border-radius: 999px;
    background: rgb(70,139,223);
    color: #fff;
    font-weight: 800;
    font-size: 16px;
    box-shadow: 0 12px 26px rgba(70,139,223,0.26);
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
    border: 0;
    cursor: pointer;
}

.download-btn:hover {
    transform: translateY(-2px);
    background: #3d82d9;
    box-shadow: 0 16px 30px rgba(70,139,223,0.32);
}

.micro-copy {
    color: var(--muted);
    font-size: 13px;
}

.phone-showcase {
    position: relative;
    min-height: 360px;
    border-radius: 32px;
    background:
        linear-gradient(145deg, rgba(70,139,223,0.16), rgba(255,255,255,0.7)),
        radial-gradient(circle at 70% 20%, rgba(70,139,223,0.18), transparent 16rem);
    border: 1px solid rgba(70,139,223,0.18);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 26px;
    overflow: hidden;
}

.phone-showcase::before,
.phone-showcase::after {
    content: "";
    position: absolute;
    border-radius: 999px;
    background: rgba(70,139,223,0.12);
}

.phone-showcase::before {
    width: 190px;
    height: 190px;
    right: -70px;
    top: -50px;
}

.phone-showcase::after {
    width: 140px;
    height: 140px;
    left: -52px;
    bottom: -44px;
}

.app-img {
    position: relative;
    z-index: 1;
    width: min(270px, 78%);
    filter: drop-shadow(0 24px 32px rgba(31,95,168,0.22));
}

.section {
    padding: 34px 0;
}

.section-head {
    margin-bottom: 22px;
}

.section-head p {
    color: var(--muted);
    margin: 12px 0 0;
}

.card,
.info-card,
.step-card,
.article-card,
.faq-item {
    background: rgba(255,255,255,0.92);
    border: 1px solid rgba(219,231,245,0.95);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.card,
.info-card,
.article-card,
.faq-item {
    padding: 22px;
}

.card p,
.info-card p,
.article-card p,
.faq-item p {
    color: var(--muted);
    margin: 10px 0 0;
}

.feature-grid,
.card-grid,
.article-grid,
.faq-grid,
.steps-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

.icon-box {
    width: 46px;
    height: 46px;
    border-radius: 16px;
    background: var(--primary-soft);
    color: var(--primary-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    margin-bottom: 14px;
}

.split {
    display: grid;
    grid-template-columns: 1fr;
    gap: 18px;
    align-items: start;
}

.panel {
    padding: 24px;
    border-radius: 26px;
    background: linear-gradient(145deg, rgba(70,139,223,0.10), #ffffff);
    border: 1px solid rgba(70,139,223,0.16);
}

.panel ul,
.clean-list {
    padding-left: 20px;
    margin: 14px 0 0;
    color: #475569;
}

.panel li,
.clean-list li {
    margin: 8px 0;
}

.stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 20px;
}

.stat {
    padding: 16px;
    border-radius: 18px;
    background: #fff;
    border: 1px solid var(--line);
}

.stat strong {
    display: block;
    color: var(--primary-dark);
    font-size: 24px;
}

.stat span {
    color: var(--muted);
    font-size: 13px;
}

.page-hero {
    padding: 42px 0 22px;
}

.page-hero .lead {
    max-width: 780px;
}

.content {
    padding: 18px 0 48px;
}

.content-body {
    display: grid;
    grid-template-columns: 1fr;
    gap: 18px;
}

.content-body p {
    color: #475569;
    margin: 0 0 14px;
}

.notice {
    padding: 18px;
    border-radius: 20px;
    background: #f0f7ff;
    border: 1px solid rgba(70,139,223,0.20);
    color: #315170;
}

.notice strong {
    color: var(--primary-dark);
}

.download-strip {
    display: flex;
    flex-direction: column;
    gap: 14px;
    align-items: flex-start;
    justify-content: space-between;
    padding: 24px;
    border-radius: 26px;
    background: linear-gradient(135deg, rgb(70,139,223), #80b7f1);
    color: #fff;
    overflow: hidden;
}

.download-strip h2,
.download-strip p {
    color: #fff;
}

.download-strip .download-btn {
    background: #fff;
    color: var(--primary-dark);
    box-shadow: 0 12px 26px rgba(16,35,63,0.14);
}

.step-card {
    padding: 20px;
    display: flex;
    gap: 14px;
}

.step-number {
    flex: 0 0 38px;
    width: 38px;
    height: 38px;
    border-radius: 14px;
    background: var(--primary);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
}

.faq-item h3 {
    font-size: 18px;
}

.article-card {
    display: flex;
    flex-direction: column;
    min-height: 100%;
}

.article-card a {
    margin-top: auto;
    color: var(--primary-dark);
    font-weight: 800;
    padding-top: 16px;
}

.site-footer {
    margin-top: 36px;
    background: #10233f;
    color: #dbeafe;
}

.footer-inner {
    padding: 34px 0 20px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.footer-brand {
    display: flex;
    gap: 14px;
    align-items: center;
}

.footer-brand p {
    margin: 4px 0 0;
    color: #b7c8dc;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.footer-links a {
    color: #dbeafe;
    padding: 8px 0;
}

.footer-links a:hover {
    color: #fff;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.10);
    padding: 16px 0 24px;
    color: #a8bdd4;
    font-size: 13px;
}

@media (min-width: 720px) {
    .header-inner,
    .footer-inner,
    .footer-bottom,
    .container {
        width: min(1120px, calc(100% - 56px));
    }

    .hero {
        padding: 62px 0 48px;
    }

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

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

    .download-strip {
        flex-direction: row;
        align-items: center;
    }

    .footer-inner {
        grid-template-columns: 1fr auto;
        align-items: center;
    }
}

@media (min-width: 960px) {
    .nav-toggle {
        display: none;
    }

    .site-nav {
        position: static;
        display: flex;
        flex-direction: row;
        box-shadow: none;
        padding: 0;
        border: 0;
        background: transparent;
        gap: 4px;
    }

    .site-nav a {
        padding: 9px 12px;
    }

    .hero-grid {
        grid-template-columns: 1.05fr .95fr;
        gap: 56px;
    }

    .feature-grid,
    .card-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .split {
        grid-template-columns: 1.1fr .9fr;
        gap: 28px;
    }

    .content-body {
        grid-template-columns: minmax(0, 1fr) 340px;
        gap: 28px;
    }

    .content-body .main-copy {
        min-width: 0;
    }

    .sticky-side {
        position: sticky;
        top: 92px;
    }
}