* {
    box-sizing: border-box;
}
:root {
    --brand-gradient: linear-gradient(90deg, #3558F2 0%, #7B4EF1 50%, #B84DDA 100%);
    --blue: #2980FE;
    --blue-dark: #1768E8;
    --text: #1f2937;
    --muted: #667085;
    --light: #f5f7fb;
    --line: #e5eaf3;
    --card: #ffffff;
    --shadow: 0 18px 45px rgba(31, 41, 55, 0.08);
    --radius: 28px;
}
html {
    scroll-behavior: smooth;
}
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
    background: #f8fafd;
    color: var(--text);
    line-height: 1.72;
    overflow-x: hidden;
}
a {
    color: inherit;
    text-decoration: none;
}
img {
    max-width: 100%;
    height: auto;
    display: block;
}
.site-header {
    position: sticky;
    top: 0;
    z-index: 40;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(229, 234, 243, 0.85);
}
.header-inner {
    max-width: 1180px;
    margin: 0 auto;
    padding: 14px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}
.brand,
.footer-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    letter-spacing: -0.02em;
}
.logo-img,
.footer-logo {
    width: 42px;
    height: 42px;
    border-radius: 13px;
    object-fit: cover;
    box-shadow: 0 8px 18px rgba(41, 128, 254, 0.18);
}
.brand-text {
    font-size: 17px;
    color: #111827;
}
.nav-toggle {
    width: 44px;
    height: 44px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: #fff;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    cursor: pointer;
}
.nav-toggle span {
    width: 18px;
    height: 2px;
    background: #1f2937;
    border-radius: 999px;
}
.site-nav {
    position: absolute;
    top: 70px;
    left: 16px;
    right: 16px;
    display: none;
    flex-direction: column;
    padding: 14px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 20px;
    box-shadow: var(--shadow);
}
.site-nav.is-open {
    display: flex;
}
.site-nav a {
    padding: 11px 13px;
    border-radius: 12px;
    color: #4b5563;
    font-size: 14px;
    font-weight: 650;
}
.site-nav a.active,
.site-nav a:hover {
    color: var(--blue);
    background: #eef5ff;
}
.container,
.section-inner {
    width: min(100% - 32px, 1180px);
    margin: 0 auto;
}
.section {
    padding: 58px 0;
}
.section-header {
    max-width: 760px;
    margin-bottom: 26px;
}
.section-kicker,
.badge,
.card-tag {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 7px 12px;
    border-radius: 999px;
    background: #eef5ff;
    color: var(--blue);
    font-size: 13px;
    font-weight: 800;
}
h1,
h2,
h3 {
    margin: 0 0 14px;
    line-height: 1.18;
    color: #111827;
}
h1 {
    font-size: clamp(34px, 7vw, 64px);
    letter-spacing: -0.05em;
}
h2 {
    font-size: clamp(26px, 4vw, 42px);
    letter-spacing: -0.035em;
}
h3 {
    font-size: 20px;
}
p {
    margin: 0 0 16px;
    color: var(--muted);
}
.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 13px 24px;
    border-radius: 999px;
    background: var(--blue);
    color: #fff;
    font-weight: 800;
    letter-spacing: 0.01em;
    box-shadow: 0 14px 26px rgba(41, 128, 254, 0.25);
    transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
}
.download-btn:hover {
    background: var(--blue-dark);
    transform: translateY(-1px);
    box-shadow: 0 18px 32px rgba(23, 104, 232, 0.28);
}
.text-link {
    color: var(--blue);
    font-weight: 800;
}
.network-manager-hero {
    width: min(100% - 26px, 1220px);
    margin: 22px auto 0;
    padding: 28px;
    border-radius: 34px;
    background: var(--brand-gradient);
    position: relative;
    overflow: hidden;
    color: #fff;
    box-shadow: 0 26px 70px rgba(53, 88, 242, 0.25);
}
.network-manager-hero:before,
.network-manager-hero:after {
    content: "";
    position: absolute;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.18);
    filter: blur(3px);
}
.network-manager-hero:before {
    width: 220px;
    height: 220px;
    top: -90px;
    right: -50px;
}
.network-manager-hero:after {
    width: 170px;
    height: 170px;
    bottom: -60px;
    left: 18%;
}
.hero-grid {
    position: relative;
    z-index: 1;
    display: grid;
    gap: 28px;
    align-items: center;
}
.hero-copy h1,
.hero-copy p {
    color: #fff;
}
.hero-copy p {
    font-size: 17px;
    max-width: 650px;
    opacity: 0.92;
}
.hero-actions {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
    margin: 24px 0 18px;
}
.hero-note {
    color: rgba(255,255,255,.86);
    font-size: 14px;
}
.hero-tags,
.float-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.hero-tags span,
.float-tags span {
    padding: 8px 12px;
    border: 1px solid rgba(255,255,255,.32);
    border-radius: 999px;
    background: rgba(255,255,255,.13);
    color: #fff;
    font-size: 13px;
    font-weight: 750;
}
.hero-visual {
    position: relative;
    min-height: 320px;
}
.visual-card {
    position: relative;
    border-radius: 30px;
    background: rgba(255,255,255,.18);
    border: 1px solid rgba(255,255,255,.24);
    padding: 18px;
    backdrop-filter: blur(16px);
}
.visual-card img {
    margin: 0 auto;
    border-radius: 26px;
    max-height: 420px;
    object-fit: contain;
}
.status-card {
    position: absolute;
    left: 12px;
    bottom: 18px;
    max-width: 215px;
    padding: 14px;
    border-radius: 20px;
    background: rgba(255,255,255,.94);
    color: #111827;
    box-shadow: 0 18px 35px rgba(17, 24, 39, .15);
}
.status-card strong {
    display: block;
    margin-bottom: 3px;
}
.status-card span {
    color: var(--muted);
    font-size: 13px;
}
.float-tags {
    margin-top: 12px;
}
.daily-scenes,
.card-grid,
.risk-grid,
.faq-grid,
.simple-grid {
    display: grid;
    gap: 16px;
}
.scene-card,
.bento-card,
.info-card,
.risk-card,
.faq-item,
.step-card,
.download-panel,
.content-card,
.tip-panel,
.check-card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 22px;
    box-shadow: 0 10px 30px rgba(31, 41, 55, 0.04);
}
.scene-card {
    position: relative;
    overflow: hidden;
}
.scene-card:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--blue);
}
.bento-feature-center {
    display: grid;
    gap: 16px;
}
.bento-card {
    min-height: 190px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}
.bento-card.featured {
    background: linear-gradient(180deg, #ffffff 0%, #f3f7ff 100%);
}
.bento-card .card-tag {
    align-self: flex-start;
}
.feature-panel,
.split-panel,
.safety-panel,
.device-panel,
.diagnosis-panel,
.account-security-section .section-panel {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 34px;
    padding: 24px;
    box-shadow: var(--shadow);
}
.split-grid,
.feature-grid {
    display: grid;
    gap: 24px;
    align-items: center;
}
.feature-image-wrap {
    background: #f3f7ff;
    border-radius: 30px;
    padding: 20px;
    border: 1px solid #dfe8ff;
}
.feature-image-wrap img {
    max-height: 430px;
    object-fit: contain;
    margin: 0 auto;
}
.point-list,
.check-list,
.clean-list {
    list-style: none;
    padding: 0;
    margin: 18px 0 0;
    display: grid;
    gap: 10px;
}
.point-list li,
.check-list li,
.clean-list li {
    position: relative;
    padding-left: 27px;
    color: #485467;
}
.point-list li:before,
.check-list li:before,
.clean-list li:before {
    content: "";
    position: absolute;
    left: 0;
    top: 10px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--blue);
    box-shadow: 0 0 0 5px #eaf3ff;
}
.smart-route-section,
.network-diagnosis-section,
.page-soft-bg {
    background: #f1f5fb;
}
.route-board {
    display: grid;
    gap: 14px;
}
.route-line {
    padding: 16px;
    border-radius: 20px;
    background: #fff;
    border: 1px solid var(--line);
}
.route-line span {
    display: block;
    color: var(--blue);
    font-size: 13px;
    font-weight: 850;
    margin-bottom: 4px;
}
.public-wifi-section .safety-panel,
.privacy-guard-section .safety-panel {
    display: grid;
    gap: 22px;
}
.panel-tags {
    display: flex;
    gap: 9px;
    flex-wrap: wrap;
    margin: 12px 0;
}
.panel-tags span {
    background: #f4f7fb;
    border: 1px solid var(--line);
    color: #344054;
    padding: 7px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 800;
}
.process-steps {
    display: grid;
    gap: 14px;
    counter-reset: step;
}
.step-card {
    position: relative;
}
.step-num {
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 13px;
    background: var(--blue);
    color: #fff;
    font-weight: 900;
    margin-bottom: 12px;
}
.risk-card {
    border-left: 4px solid var(--blue);
}
.cta-section {
    width: min(100% - 32px, 1180px);
    margin: 40px auto 70px;
    border-radius: 34px;
    background: var(--brand-gradient);
    padding: 42px 22px;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
}
.cta-section h2,
.cta-section p {
    color: #fff;
}
.cta-section p {
    max-width: 680px;
    margin: 0 auto 22px;
    opacity: .9;
}
.page-hero {
    width: min(100% - 32px, 1180px);
    margin: 30px auto 0;
    padding: 34px 24px;
    border-radius: 34px;
    background: linear-gradient(180deg, #ffffff 0%, #f3f7ff 100%);
    border: 1px solid #dfe8ff;
}
.page-hero p {
    max-width: 780px;
    font-size: 17px;
}
.content-layout {
    width: min(100% - 32px, 1180px);
    margin: 28px auto 70px;
    display: grid;
    gap: 20px;
}
.article-body {
    display: grid;
    gap: 18px;
}
.side-panel {
    display: grid;
    gap: 16px;
    align-content: start;
}
.highlight-box {
    padding: 18px;
    border-radius: 24px;
    background: #eef5ff;
    border: 1px solid #d9e8ff;
}
.help-list {
    display: grid;
    gap: 12px;
    padding: 0;
    margin: 0;
    list-style: none;
}
.help-list li {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 14px;
}
.download-page .download-panel {
    text-align: center;
}
.download-page .download-panel .download-btn {
    margin: 8px auto 18px;
}
.faq-item h3 {
    font-size: 18px;
    margin-bottom: 8px;
}
.site-footer {
    background: #111827;
    color: #e5e7eb;
    padding: 42px 18px 24px;
}
.footer-grid {
    width: min(100%, 1180px);
    margin: 0 auto;
    display: grid;
    gap: 24px;
}
.site-footer p,
.footer-bottom {
    color: #aeb6c4;
}
.site-footer h3 {
    color: #fff;
    font-size: 16px;
}
.site-footer a:not(.footer-brand) {
    display: block;
    color: #cbd5e1;
    margin: 9px 0;
    font-size: 14px;
}
.footer-brand {
    color: #fff;
    margin-bottom: 14px;
}
.footer-bottom {
    width: min(100%, 1180px);
    margin: 28px auto 0;
    padding-top: 18px;
    border-top: 1px solid rgba(255,255,255,.12);
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 13px;
}
@media (min-width: 700px) {
    .daily-scenes,
    .simple-grid,
    .risk-grid,
    .faq-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .process-steps {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .footer-grid {
        grid-template-columns: 1.4fr 1fr 1fr 1fr;
    }
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
    }
}
@media (min-width: 980px) {
    .nav-toggle {
        display: none;
    }
    .site-nav {
        position: static;
        display: flex;
        flex-direction: row;
        padding: 0;
        background: transparent;
        border: 0;
        box-shadow: none;
        gap: 2px;
    }
    .site-nav a {
        padding: 9px 11px;
    }
    .network-manager-hero {
        padding: 52px;
    }
    .hero-grid {
        grid-template-columns: 1.05fr .95fr;
    }
    .daily-scenes {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
    .bento-feature-center {
        grid-template-columns: repeat(4, minmax(0, 1fr));
        grid-auto-rows: minmax(190px, auto);
    }
    .bento-card.featured {
        grid-column: span 2;
        grid-row: span 2;
    }
    .bento-card.wide {
        grid-column: span 2;
    }
    .split-grid,
    .feature-grid {
        grid-template-columns: 1fr 1fr;
    }
    .public-wifi-section .safety-panel,
    .privacy-guard-section .safety-panel {
        grid-template-columns: 1.05fr .95fr;
    }
    .risk-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
    .faq-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .content-layout {
        grid-template-columns: minmax(0, 1fr) 330px;
        align-items: start;
    }
    .process-steps {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}
@media (max-width: 480px) {
    .network-manager-hero {
        padding: 24px 18px;
        border-radius: 28px;
    }
    .section {
        padding: 44px 0;
    }
    .scene-card,
    .bento-card,
    .info-card,
    .risk-card,
    .faq-item,
    .step-card,
    .content-card,
    .tip-panel,
    .check-card {
        padding: 18px;
        border-radius: 22px;
    }
    .download-btn {
        width: 100%;
    }
    .hero-actions .download-btn,
    .cta-section .download-btn,
    .download-panel .download-btn {
        width: auto;
        min-width: 180px;
    }
    .hero-visual {
        min-height: auto;
    }
    .status-card {
        position: relative;
        left: auto;
        bottom: auto;
        margin-top: 12px;
        max-width: none;
    }
}