:root {
    --primary: rgb(70,139,223);
    --primary-dark: #1f5fae;
    --ink: #13233a;
    --muted: #66758b;
    --line: #dce7f5;
    --soft: #f4f8fe;
    --soft-blue: #eaf4ff;
    --white: #ffffff;
    --shadow: 0 18px 55px rgba(35, 79, 134, 0.10);
    --radius: 22px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
    color: var(--ink);
    background:
        radial-gradient(circle at 12% 8%, rgba(70,139,223,0.13), transparent 24rem),
        linear-gradient(180deg, #ffffff 0%, #f7fbff 42%, #ffffff 100%);
    line-height: 1.75;
    overflow-x: hidden;
}

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

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

.container {
    width: min(100% - 36px, 1160px);
    margin: 0 auto;
}

.narrow {
    width: min(100% - 36px, 880px);
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(255,255,255,0.88);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(220,231,245,0.85);
}

.header-inner {
    width: min(100% - 28px, 1180px);
    margin: 0 auto;
    min-height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}

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

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

.brand-name {
    white-space: nowrap;
}

.site-nav {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 6px;
    flex-wrap: wrap;
}

.site-nav a {
    color: #3b4c64;
    font-size: 14px;
    padding: 8px 10px;
    border-radius: 999px;
}

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

.site-main {
    min-height: 70vh;
}

.magazine-hero {
    padding: 52px 0 36px;
}

.hero-grid {
    display: grid;
    gap: 36px;
    align-items: center;
}

.eyebrow,
.badge {
    display: inline-flex;
    width: fit-content;
    align-items: center;
    gap: 8px;
    color: var(--primary-dark);
    background: rgba(70,139,223,0.10);
    border: 1px solid rgba(70,139,223,0.18);
    border-radius: 999px;
    padding: 6px 12px;
    font-size: 13px;
    font-weight: 700;
}

h1,
h2,
h3 {
    line-height: 1.18;
    margin: 0;
    letter-spacing: -0.04em;
}

h1 {
    font-size: clamp(38px, 10vw, 84px);
    margin-top: 18px;
}

h2 {
    font-size: clamp(28px, 5vw, 52px);
}

h3 {
    font-size: 21px;
}

p {
    margin: 0;
}

.lead {
    margin-top: 22px;
    color: var(--muted);
    font-size: 17px;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-top: 28px;
    min-height: 48px;
    padding: 0 26px;
    border-radius: 999px;
    color: var(--white);
    background: var(--primary);
    font-weight: 800;
    box-shadow: 0 14px 32px rgba(70,139,223,0.28);
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

.download-btn:hover {
    transform: translateY(-2px);
    background: var(--primary-dark);
    box-shadow: 0 18px 38px rgba(70,139,223,0.34);
}

.trust-tags {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 22px;
}

.trust-tags span {
    font-size: 13px;
    color: #314764;
    border: 1px solid var(--line);
    background: rgba(255,255,255,.78);
    border-radius: 999px;
    padding: 7px 11px;
}

.product-visual {
    position: relative;
    min-height: 460px;
    display: grid;
    place-items: center;
    border-radius: 30px;
    background:
        linear-gradient(145deg, rgba(70,139,223,0.18), rgba(255,255,255,0.70)),
        radial-gradient(circle at 80% 20%, rgba(70,139,223,0.20), transparent 18rem);
    border: 1px solid rgba(70,139,223,0.16);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.product-visual:before {
    content: "";
    position: absolute;
    width: 78%;
    height: 78%;
    border-radius: 999px;
    background: rgba(255,255,255,0.58);
    filter: blur(3px);
}

.app-image {
    position: relative;
    z-index: 2;
    width: min(70%, 330px);
    filter: drop-shadow(0 24px 40px rgba(32, 77, 133, .22));
}

.visual-card {
    position: absolute;
    z-index: 3;
    width: min(68%, 230px);
    padding: 16px;
    border-radius: 18px;
    background: rgba(255,255,255,0.88);
    border: 1px solid rgba(220,231,245,0.9);
    box-shadow: 0 16px 40px rgba(28, 76, 125, .10);
}

.visual-card span {
    display: block;
    color: var(--muted);
    font-size: 12px;
}

.visual-card strong {
    display: block;
    margin-top: 5px;
    color: var(--ink);
}

.visual-status {
    top: 24px;
    left: 18px;
}

.visual-backup {
    right: 18px;
    bottom: 94px;
}

.visual-asset {
    left: 22px;
    bottom: 24px;
}

.section {
    padding: 66px 0;
}

.section-heading {
    max-width: 760px;
    margin-bottom: 32px;
}

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

.section-number {
    display: inline-block;
    color: var(--primary);
    font-weight: 900;
    letter-spacing: .12em;
    margin-bottom: 12px;
}

.brand-statement {
    padding: 66px 0;
    background: linear-gradient(135deg, #ffffff, #eef7ff);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.statement-inner {
    max-width: 1030px;
}

.statement-inner p {
    max-width: 820px;
    margin-top: 22px;
    color: var(--muted);
    font-size: 17px;
}

.statement-quote {
    color: var(--primary-dark) !important;
    font-size: clamp(24px, 5vw, 44px) !important;
    line-height: 1.22;
    font-weight: 800;
    letter-spacing: -0.04em;
}

.story-timeline {
    display: grid;
    gap: 18px;
    position: relative;
}

.story-timeline article {
    background: rgba(255,255,255,0.86);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: 0 12px 34px rgba(27, 68, 119, .07);
}

.story-timeline article span {
    color: var(--primary);
    font-weight: 900;
    letter-spacing: .14em;
}

.story-timeline h3 {
    margin-top: 10px;
}

.story-timeline p {
    margin-top: 10px;
    color: var(--muted);
}

.story-timeline a,
.scenario-story-grid a,
.chapter-list a:hover strong {
    color: var(--primary-dark);
}

.story-timeline a,
.scenario-story-grid a {
    display: inline-block;
    margin-top: 14px;
    font-weight: 800;
}

.split-section {
    background: linear-gradient(180deg, transparent, rgba(234,244,255,0.72), transparent);
}

.split-block {
    display: grid;
    gap: 28px;
    align-items: center;
}

.split-block p {
    color: var(--muted);
    margin-top: 18px;
}

.info-panel {
    display: grid;
    gap: 14px;
    padding: 22px;
    border-radius: 28px;
    background: linear-gradient(135deg, rgba(70,139,223,0.14), rgba(255,255,255,0.92));
    border: 1px solid rgba(70,139,223,0.16);
    box-shadow: var(--shadow);
}

.info-panel div {
    padding: 20px;
    border-radius: 18px;
    background: rgba(255,255,255,0.8);
    border: 1px solid var(--line);
}

.info-panel p {
    margin-top: 6px;
    color: var(--muted);
}

.chapter-layout {
    display: grid;
    gap: 28px;
}

.chapter-title p {
    color: var(--muted);
    margin-top: 14px;
}

.chapter-list {
    display: grid;
    border-top: 1px solid var(--line);
}

.chapter-list a {
    display: grid;
    grid-template-columns: 44px 1fr;
    gap: 10px 16px;
    padding: 20px 0;
    border-bottom: 1px solid var(--line);
    align-items: start;
}

.chapter-list span {
    color: var(--primary);
    font-weight: 900;
}

.chapter-list strong {
    font-size: 20px;
}

.chapter-list em {
    grid-column: 2;
    color: var(--muted);
    font-style: normal;
}

.scenario-story-grid {
    display: grid;
    gap: 18px;
}

.scenario-story-grid article {
    min-height: 220px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 24px;
    border-radius: 28px;
    background:
        linear-gradient(160deg, rgba(255,255,255,0.96), rgba(234,244,255,0.76)),
        radial-gradient(circle at 20% 10%, rgba(70,139,223,0.16), transparent 14rem);
    border: 1px solid var(--line);
    box-shadow: 0 16px 44px rgba(32, 77, 133, .08);
}

.scenario-story-grid p {
    margin-top: 10px;
    color: var(--muted);
}

.risk-panel {
    padding: 72px 0;
}

.risk-inner {
    padding: 28px;
    border-radius: 32px;
    background: linear-gradient(135deg, #eef7ff, #ffffff);
    border: 1px solid rgba(70,139,223,0.15);
    box-shadow: var(--shadow);
}

.risk-inner h2 {
    max-width: 860px;
}

.risk-grid {
    display: grid;
    gap: 14px;
    margin-top: 28px;
}

.risk-grid div {
    padding: 18px;
    border-radius: 18px;
    background: rgba(255,255,255,0.74);
    border: 1px solid var(--line);
}

.risk-grid p {
    margin-top: 6px;
    color: var(--muted);
}

.faq-list,
.faq-page .container {
    display: grid;
    gap: 14px;
}

.faq-list details,
.faq-item {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 18px 20px;
    box-shadow: 0 10px 28px rgba(27, 68, 119, .06);
}

summary {
    cursor: pointer;
    font-weight: 800;
}

details p {
    margin-top: 12px;
    color: var(--muted);
}

.cta-section {
    padding: 72px 0;
    text-align: center;
    background:
        radial-gradient(circle at 50% 0%, rgba(70,139,223,0.14), transparent 22rem),
        linear-gradient(180deg, #ffffff, #eef7ff);
    border-top: 1px solid var(--line);
}

.cta-section p {
    max-width: 640px;
    margin: 16px auto 0;
    color: var(--muted);
}

.page-hero {
    padding: 58px 0 34px;
}

.page-hero .container {
    display: grid;
    gap: 14px;
}

.page-hero h1 {
    font-size: clamp(36px, 8vw, 72px);
    max-width: 920px;
}

.page-hero p {
    max-width: 760px;
    color: var(--muted);
    font-size: 17px;
}

.compact-hero,
.guide-hero,
.download-hero {
    background: linear-gradient(135deg, rgba(234,244,255,0.72), rgba(255,255,255,0.95));
    border-bottom: 1px solid var(--line);
}

.article-layout {
    width: min(100% - 36px, 1080px);
    margin: 0 auto;
    display: grid;
    gap: 24px;
    align-items: start;
}

.article-main {
    min-width: 0;
    padding: 24px;
    background: rgba(255,255,255,0.86);
    border: 1px solid var(--line);
    border-radius: 28px;
    box-shadow: 0 14px 44px rgba(32, 77, 133, .07);
}

.article-main h2 {
    font-size: clamp(24px, 4vw, 38px);
    margin-top: 28px;
}

.article-main h2:first-child {
    margin-top: 0;
}

.article-main p {
    color: var(--muted);
    margin-top: 12px;
}

.article-aside {
    display: grid;
    gap: 10px;
    padding: 20px;
    border-radius: 22px;
    background: linear-gradient(180deg, #ffffff, #f3f8ff);
    border: 1px solid var(--line);
    position: relative;
}

.article-aside strong {
    margin-bottom: 6px;
}

.article-aside a {
    color: var(--primary-dark);
    font-weight: 800;
    padding: 9px 0;
    border-bottom: 1px solid var(--line);
}

.aside-note,
.note-box {
    margin-top: 16px;
    padding: 16px;
    border-radius: 18px;
    background: var(--soft-blue);
    color: #38516e;
    border: 1px solid rgba(70,139,223,0.14);
}

.step-list {
    display: grid;
    gap: 16px;
    padding-left: 20px;
}

.step-list li {
    padding-left: 4px;
}

.step-list p {
    margin-top: 4px;
}

.guide-article {
    display: grid;
    gap: 18px;
}

.guide-section {
    padding: 22px;
    border-radius: 22px;
    background: linear-gradient(135deg, #ffffff, #f5f9ff);
    border: 1px solid var(--line);
}

.guide-section span {
    display: inline-block;
    color: var(--primary);
    font-weight: 900;
    letter-spacing: .12em;
    margin-bottom: 8px;
}

.guide-section h2 {
    margin-top: 0;
    font-size: clamp(22px, 4vw, 32px);
}

.check-card {
    padding: 22px;
    border-radius: 22px;
    background: var(--soft-blue);
    border: 1px solid rgba(70,139,223,0.16);
}

.check-card h2 {
    margin-top: 0;
    font-size: 24px;
}

.check-card ul {
    margin: 12px 0 0;
    padding-left: 20px;
    color: #435a76;
}

.cta-inline {
    margin-top: 18px;
    padding: 22px;
    border-radius: 22px;
    background: linear-gradient(135deg, #eef7ff, #ffffff);
    border: 1px solid var(--line);
    text-align: center;
}

.site-footer {
    background: #10243c;
    color: rgba(255,255,255,0.78);
    padding: 42px 0 18px;
}

.footer-grid {
    display: grid;
    gap: 24px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #fff;
    margin-bottom: 12px;
}

.footer-brand img {
    width: 36px;
    height: 36px;
    border-radius: 12px;
}

.footer-links {
    display: grid;
    gap: 10px;
}

.footer-links a {
    color: rgba(255,255,255,0.86);
}

.footer-bottom {
    width: min(100% - 36px, 1160px);
    margin: 30px auto 0;
    padding-top: 18px;
    border-top: 1px solid rgba(255,255,255,0.12);
    font-size: 13px;
    color: rgba(255,255,255,0.58);
}

@media (min-width: 760px) {
    .container {
        width: min(100% - 54px, 1160px);
    }

    .magazine-hero {
        padding: 78px 0 52px;
    }

    .hero-grid,
    .split-block,
    .chapter-layout,
    .article-layout {
        grid-template-columns: minmax(0, 1.02fr) minmax(310px, .78fr);
    }

    .reverse-layout {
        grid-template-columns: minmax(310px, .72fr) minmax(0, 1fr);
    }

    .reverse-layout .article-main {
        order: 2;
    }

    .reverse-layout .article-aside {
        order: 1;
    }

    .product-visual {
        min-height: 620px;
    }

    .story-timeline {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 22px 26px;
    }

    .story-timeline article:nth-child(even) {
        transform: translateY(32px);
    }

    .scenario-story-grid {
        grid-template-columns: 1.2fr .9fr .9fr;
    }

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

    .footer-grid {
        grid-template-columns: 1fr 320px;
        align-items: start;
    }
}

@media (min-width: 1024px) {
    .site-nav a {
        font-size: 15px;
        padding: 9px 13px;
    }

    .section {
        padding: 88px 0;
    }

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

    .article-aside {
        position: sticky;
        top: 96px;
    }
}

@media (max-width: 520px) {
    .header-inner {
        align-items: flex-start;
        flex-direction: column;
        padding: 12px 0;
        gap: 10px;
    }

    .site-nav {
        justify-content: flex-start;
    }

    .site-nav a {
        padding: 6px 9px;
        font-size: 13px;
    }

    .product-visual {
        min-height: 430px;
        border-radius: 24px;
    }

    .visual-card {
        width: 220px;
        padding: 12px;
        font-size: 13px;
    }

    .visual-backup {
        bottom: 88px;
        right: 10px;
    }

    .download-btn {
        width: 100%;
    }

    .article-main,
    .risk-inner {
        padding: 20px;
    }
}