:root {
    --blue: #2563eb;
    --deep: #1e3a5f;
    --orange: #f59e0b;
    --ink: #1f2937;
    --muted: #526174;
    --line: #dfe7f1;
    --surface: #ffffff;
    --background: #f8fafc;
    --soft-blue: #eef5ff;
    --radius: 18px;
    --shadow: 0 18px 48px rgba(30, 58, 95, .10);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--ink);
    background: var(--background);
    font-family: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
    line-height: 1.7;
}

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

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

button, a {
    -webkit-tap-highlight-color: transparent;
}

button {
    font: inherit;
}

.container {
    width: min(1160px, calc(100% - 40px));
    margin: 0 auto;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: fixed;
    left: 16px;
    top: -80px;
    z-index: 1000;
    padding: 10px 16px;
    color: #fff;
    background: var(--deep);
    border-radius: 8px;
}

.skip-link:focus {
    top: 16px;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, .94);
    border-bottom: 1px solid rgba(223, 231, 241, .9);
    backdrop-filter: blur(14px);
}

.header-inner {
    min-height: 76px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
}

.brand {
    width: 214px;
    height: 58px;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.brand img {
    width: auto;
    max-height: 100%;
    object-fit: contain;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
    font-size: 15px;
    font-weight: 650;
}

.nav-links a {
    padding: 10px 0;
    color: #42526a;
}

.nav-links a:hover, .nav-links a:focus-visible {
    color: var(--blue);
}

.nav-links .nav-action {
    padding: 11px 20px;
    color: #fff;
    background: var(--blue);
    border-radius: 999px;
}

.nav-links .nav-action:hover, .nav-links .nav-action:focus-visible {
    color: #fff;
    background: #174fc8;
}

.menu-toggle {
    display: none;
    width: 46px;
    height: 46px;
    padding: 11px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: #fff;
    cursor: pointer;
}

.menu-toggle > span:not(.sr-only) {
    display: block;
    height: 2px;
    margin: 5px 0;
    background: var(--deep);
    border-radius: 2px;
}

.hero {
    width: min(1240px, calc(100% - 40px));
    min-height: 610px;
    margin: 34px auto 0;
    padding: 48px;
    display: grid;
    grid-template-columns: minmax(310px, .82fr) minmax(0, 1.55fr);
    gap: 54px;
    align-items: center;
    border-radius: 30px;
    background: linear-gradient(135deg, #eef5ff 0%, #fff 52%, #fff8e8 100%);
    border: 1px solid #dce8f8;
    box-shadow: var(--shadow);
    overflow: hidden;
    position: relative;
}

.hero::after {
    content: "";
    position: absolute;
    width: 340px;
    height: 340px;
    right: -170px;
    top: -170px;
    border-radius: 50%;
    background: rgba(37, 99, 235, .08);
}

.login-entry {
    position: relative;
    z-index: 2;
    padding: 30px;
    background: #fff;
    border: 1px solid #d9e5f5;
    border-top: 5px solid var(--blue);
    border-radius: 22px;
    box-shadow: 0 18px 40px rgba(30, 58, 95, .12);
}

.eyebrow {
    display: inline-block;
    color: var(--blue);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .1em;
    text-transform: uppercase;
}

.login-entry h2, .login-entry .login-title {
    margin: 8px 0 12px;
    color: var(--deep);
    font-size: 25px;
    line-height: 1.35;
    font-weight: 700;
}

.login-entry p {
    margin: 0 0 18px;
    color: var(--muted);
    font-size: 14px;
}

.login-entry ul {
    list-style: none;
    padding: 0;
    margin: 0 0 22px;
    display: grid;
    gap: 12px;
}

.login-entry li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: #34465d;
}

.login-entry li span {
    width: 30px;
    height: 30px;
    display: grid;
    place-items: center;
    flex: 0 0 auto;
    color: var(--blue);
    background: var(--soft-blue);
    border-radius: 50%;
    font-size: 11px;
    font-weight: 800;
}

.login-entry small {
    display: block;
    margin-top: 12px;
    color: #748196;
    text-align: center;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-kicker {
    display: inline-flex;
    padding: 7px 13px;
    color: #174fc8;
    background: rgba(37, 99, 235, .09);
    border: 1px solid rgba(37, 99, 235, .14);
    border-radius: 999px;
    font-size: 14px;
    font-weight: 750;
}

.hero h1 {
    max-width: 720px;
    margin: 20px 0 18px;
    color: var(--deep);
    font-size: clamp(38px, 5vw, 64px);
    line-height: 1.16;
    letter-spacing: -.035em;
}

.hero-lead {
    max-width: 680px;
    margin: 0;
    color: var(--muted);
    font-size: 18px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin: 30px 0 25px;
}

.button {
    min-height: 48px;
    padding: 12px 23px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid transparent;
    border-radius: 12px;
    font-weight: 750;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

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

.button:focus-visible, a:focus-visible, button:focus-visible {
    outline: 3px solid rgba(245, 158, 11, .45);
    outline-offset: 3px;
}

.button-primary {
    color: #fff;
    background: var(--blue);
    box-shadow: 0 10px 24px rgba(37, 99, 235, .22);
}

.button-primary:hover {
    background: #174fc8;
}

.button-secondary {
    color: var(--deep);
    background: #fff;
    border-color: #ccd9e9;
}

.button-block {
    width: 100%;
}

.hero-notes {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.hero-notes span {
    padding: 7px 11px;
    color: #50627a;
    background: rgba(255, 255, 255, .72);
    border: 1px solid #dce5ef;
    border-radius: 8px;
    font-size: 13px;
}

.section {
    padding: 92px 0;
}

.section-heading {
    max-width: 720px;
    margin: 0 auto 40px;
    text-align: center;
}

.section-heading h2, .service-copy h2, .cta-inner h2 {
    margin: 10px 0 14px;
    color: var(--deep);
    font-size: clamp(30px, 4vw, 44px);
    line-height: 1.25;
    letter-spacing: -.025em;
}

.section-heading p, .service-copy > p {
    margin: 0;
    color: var(--muted);
    font-size: 16px;
}

.heading-row {
    max-width: none;
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 24px;
    text-align: left;
}

.heading-row h2 {
    margin-bottom: 0;
}

.text-link {
    color: var(--blue);
    font-weight: 750;
    white-space: nowrap;
}

.step-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
}

.step-card {
    padding: 25px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
}

.step-number {
    color: var(--orange);
    font-weight: 850;
    font-size: 13px;
}

.step-card h3 {
    margin: 16px 0 9px;
    color: var(--deep);
    font-size: 20px;
}

.step-card p {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
}

.gifts-section {
    background: #fff;
}

.price-notice {
    margin: -18px 0 30px;
    padding: 14px 18px;
    color: #6b5207;
    background: #fff9e8;
    border: 1px solid #f5dc9a;
    border-radius: 12px;
    font-size: 14px;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 18px;
}

.product-card {
    min-width: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 16px;
    transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}

.product-card:hover {
    transform: translateY(-4px);
    border-color: #afc8ee;
    box-shadow: 0 14px 32px rgba(30, 58, 95, .10);
}

.product-image {
    aspect-ratio: 1 / 1;
    padding: 12px;
    display: grid;
    place-items: center;
    overflow: hidden;
    background: #f6f8fb;
}

.product-card img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 9px;
}

.product-name {
    padding: 15px 15px 8px;
    color: var(--deep);
    font-weight: 750;
    line-height: 1.45;
}

.product-bottom {
    margin-top: auto;
    padding: 0 15px 15px;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.product-price {
    color: #d35400;
    font-size: 15px;
    font-weight: 850;
}

.product-cta {
    color: var(--blue);
    font-size: 12px;
    font-weight: 700;
}

.scenarios-section {
    background: var(--background);
}

.scenario-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.scenario-grid article {
    padding: 28px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
}

.scenario-grid article > span {
    width: 46px;
    height: 46px;
    display: grid;
    place-items: center;
    color: #fff;
    background: var(--blue);
    border-radius: 14px;
    font-weight: 850;
}

.scenario-grid h3 {
    margin: 18px 0 8px;
    color: var(--deep);
}

.scenario-grid p {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
}

.services-section {
    color: #fff;
    background: var(--deep);
}

.service-layout {
    display: grid;
    grid-template-columns: .9fr 1.1fr;
    gap: 70px;
    align-items: center;
}

.service-copy .eyebrow {
    color: #9bc0ff;
}

.service-copy h2 {
    color: #fff;
}

.service-copy > p {
    color: #c7d3e2;
}

.service-copy .button {
    margin-top: 26px;
}

.service-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.service-list article {
    padding: 22px;
    background: rgba(255, 255, 255, .07);
    border: 1px solid rgba(255, 255, 255, .12);
    border-radius: 15px;
}

.service-list strong {
    color: #fff;
    font-size: 17px;
}

.service-list p {
    margin: 7px 0 0;
    color: #c7d3e2;
    font-size: 14px;
}

.faq-section {
    background: #fff;
}

.faq-layout {
    display: grid;
    grid-template-columns: .7fr 1.3fr;
    gap: 70px;
    align-items: start;
}

.faq-heading {
    margin: 0;
    text-align: left;
    position: sticky;
    top: 115px;
}

.faq-list {
    display: grid;
    gap: 13px;
}

.faq-item {
    border: 1px solid var(--line);
    border-radius: 15px;
    overflow: hidden;
    background: #fff;
}

.faq-item button {
    width: 100%;
    min-height: 58px;
    padding: 17px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    color: var(--deep);
    background: #fff;
    border: 0;
    cursor: pointer;
    text-align: left;
    font-weight: 750;
}

.faq-item button span {
    color: var(--blue);
    font-size: 22px;
}

.faq-answer {
    padding: 0 20px 18px;
    color: var(--muted);
}

.faq-answer p {
    margin: 0;
}

[hidden] {
    display: none !important;
}

.cta-section {
    padding: 62px 0;
    color: #fff;
    background: var(--blue);
}

.cta-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 40px;
}

.cta-inner .eyebrow {
    color: #d8e7ff;
}

.cta-inner h2 {
    margin: 6px 0;
    color: #fff;
}

.cta-inner p {
    margin: 0;
    color: #dbe7ff;
}

.button-light {
    color: var(--deep);
    background: #fff;
    white-space: nowrap;
}

.site-footer {
    padding: 58px 0 24px;
    color: #bac5d4;
    background: #132a46;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr;
    gap: 60px;
}

.footer-brand {
    display: inline-block;
    color: #fff;
    font-size: 24px;
    font-weight: 850;
}

.footer-grid p {
    max-width: 420px;
    margin: 10px 0 0;
}

.footer-grid > div:not(:first-child) {
    display: grid;
    align-content: start;
    gap: 8px;
}

.footer-grid strong {
    margin-bottom: 6px;
    color: #fff;
}

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

.footer-bottom {
    margin-top: 42px;
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    gap: 20px;
    border-top: 1px solid rgba(255, 255, 255, .12);
    font-size: 13px;
}

.footer-bottom p {
    margin: 0;
}

.back-to-top {
    position: fixed;
    right: 22px;
    bottom: 22px;
    z-index: 40;
    width: 48px;
    height: 48px;
    color: #fff;
    background: var(--blue);
    border: 0;
    border-radius: 50%;
    box-shadow: 0 12px 28px rgba(30, 58, 95, .24);
    cursor: pointer;
}

@media (max-width: 980px) {
    .hero {
        grid-template-columns: .9fr 1.1fr;
        gap: 32px;
        padding: 34px;
    }

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

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

    .service-layout, .faq-layout {
        gap: 42px;
    }
}

@media (max-width: 760px) {
    .container {
        width: min(100% - 28px, 1160px);
    }

    .header-inner {
        min-height: 66px;
    }

    .brand {
        width: 176px;
        height: 48px;
    }

    .menu-toggle {
        display: block;
    }

    .nav-links {
        position: absolute;
        left: 14px;
        right: 14px;
        top: 66px;
        padding: 14px;
        display: grid;
        gap: 2px;
        background: #fff;
        border: 1px solid var(--line);
        border-radius: 14px;
        box-shadow: var(--shadow);
    }

    .nav-links a {
        min-height: 44px;
        padding: 10px 12px;
        display: flex;
        align-items: center;
        border-radius: 8px;
    }

    .nav-links .nav-action {
        justify-content: center;
    }

    .hero {
        width: min(100% - 28px, 1240px);
        min-height: 0;
        margin-top: 18px;
        padding: 28px 20px;
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .hero-content {
        grid-row: 1;
    }

    .login-entry {
        grid-row: 2;
        padding: 24px;
    }

    .hero h1 {
        font-size: clamp(34px, 10vw, 48px);
    }

    .hero-lead {
        font-size: 16px;
    }

    .hero-actions .button {
        width: 100%;
    }

    .section {
        padding: 70px 0;
    }

    .section-heading {
        margin-bottom: 30px;
    }

    .heading-row {
        display: block;
    }

    .heading-row .text-link {
        display: inline-block;
        margin-top: 14px;
    }

    .product-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 11px;
    }

    .product-name {
        padding: 12px 11px 6px;
        font-size: 14px;
    }

    .product-bottom {
        padding: 0 11px 12px;
    }

    .product-price {
        font-size: 13px;
    }

    .product-cta {
        font-size: 11px;
    }

    .step-grid, .scenario-grid, .service-list {
        grid-template-columns: 1fr;
    }

    .service-layout, .faq-layout {
        grid-template-columns: 1fr;
    }

    .faq-heading {
        position: static;
    }

    .cta-inner {
        display: block;
    }

    .cta-inner .button {
        margin-top: 22px;
        width: 100%;
    }

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

    .footer-bottom {
        display: block;
    }

    .footer-bottom p + p {
        margin-top: 7px;
    }
}

@media (max-width: 390px) {
    .hero {
        padding-left: 16px;
        padding-right: 16px;
    }

    .login-entry {
        padding: 21px 18px;
    }

    .product-grid {
        gap: 9px;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *, *::before, *::after {
        transition: none !important;
    }
}