:root {
    --navy-900: #07182d;
    --navy-800: #0a203c;
    --blue-500: #2f7cf6;
    --blue-600: #1f63d6;
    --ink-900: #10233b;
    --ink-600: #50627a;
    --ink-400: #8291a6;
    --line: #e2e8f2;
    --surface: #ffffff;
    --canvas: #f3f6fb;
    --radius: 16px;
    --shadow: 0 14px 34px rgba(13, 38, 76, 0.08);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
    color: var(--ink-900);
    background: var(--surface);
    font-size: 16px;
    line-height: 1.7;
}

a {
    color: var(--blue-600);
    text-decoration: none;
}

a:hover {
    color: var(--blue-500);
}

h1,
h2,
h3,
p,
dl,
dd {
    margin: 0;
}

.site-wrap {
    width: 100%;
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    z-index: 100;
    padding: 10px 16px;
    background: var(--navy-900);
    color: #ffffff;
    border-radius: 0 0 8px 0;
}

.skip-link:focus {
    left: 0;
    color: #ffffff;
}

.site-header {
    background: rgba(255, 255, 255, 0.96);
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(10px);
}

.header-inner {
    min-height: 76px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.site-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--ink-900);
    min-width: 0;
}

.site-brand:hover {
    color: var(--ink-900);
}

.site-brand-mark {
    width: 42px;
    height: 42px;
    flex: 0 0 42px;
    border-radius: 13px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, var(--blue-500), #6fb4ff);
    color: #ffffff;
    font-size: 20px;
    font-weight: 700;
    box-shadow: 0 8px 18px rgba(47, 124, 246, 0.3);
}

.site-brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.3;
    min-width: 0;
}

.site-brand-text strong {
    font-size: 18px;
    letter-spacing: 0.04em;
}

.site-brand-text small {
    color: var(--ink-600);
    font-size: 12px;
    overflow-wrap: anywhere;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.site-nav a {
    padding: 8px 12px;
    border-radius: 8px;
    color: var(--ink-600);
    font-size: 14px;
    font-weight: 600;
}

.site-nav a:hover {
    background: var(--canvas);
    color: var(--blue-600);
}

.site-nav a.site-nav-cta {
    background: var(--blue-600);
    color: #ffffff;
    box-shadow: 0 8px 16px rgba(31, 99, 214, 0.18);
}

.site-nav a.site-nav-cta:hover {
    background: #1755bd;
    color: #ffffff;
}

.hero {
    background:
        radial-gradient(circle at 88% 8%, rgba(47, 124, 246, 0.16), transparent 38%),
        linear-gradient(160deg, #f7faff 0%, #eef4ff 58%, #ffffff 100%);
    border-bottom: 1px solid var(--line);
}

.hero-inner {
    padding-top: 76px;
    padding-bottom: 76px;
    max-width: 900px;
}

.eyebrow {
    color: var(--blue-600);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.hero h1 {
    margin-top: 12px;
    font-size: clamp(28px, 4.4vw, 46px);
    line-height: 1.28;
    letter-spacing: 0.01em;
}

.lead {
    margin-top: 18px;
    max-width: 760px;
    color: var(--ink-600);
    font-size: clamp(15px, 1.8vw, 18px);
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 10px 20px;
    border: 1px solid transparent;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    transition: background 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}

.btn-primary {
    background: var(--blue-600);
    color: #ffffff;
    box-shadow: 0 10px 20px rgba(31, 99, 214, 0.22);
}

.btn-primary:hover {
    background: #1755bd;
    color: #ffffff;
}

.btn-ghost {
    background: #ffffff;
    border-color: var(--line);
    color: var(--ink-900);
}

.btn-ghost:hover {
    border-color: #c3d2e8;
    color: var(--blue-600);
}

.hero-points {
    margin: 24px 0 0;
    padding: 0;
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 10px 22px;
    color: var(--ink-600);
    font-size: 13px;
}

.hero-points li {
    display: flex;
    align-items: center;
    gap: 7px;
}

.hero-points li::before {
    content: "";
    width: 6px;
    height: 6px;
    flex: 0 0 6px;
    border-radius: 50%;
    background: var(--blue-500);
}

.section {
    padding: 68px 0;
}

.section-muted {
    background: var(--canvas);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.section-head {
    max-width: 720px;
    margin-bottom: 30px;
}

.section-head h2,
.about-grid h2 {
    margin-top: 8px;
    font-size: clamp(24px, 3vw, 32px);
    line-height: 1.3;
}

.section-head p:last-child {
    margin-top: 12px;
    color: var(--ink-600);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
}

.card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 22px;
    box-shadow: var(--shadow);
}

.card h3 {
    font-size: 17px;
    line-height: 1.4;
}

.card p {
    margin-top: 10px;
    color: var(--ink-600);
    font-size: 14px;
}

.about-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 36px;
    align-items: start;
}

.facts {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 8px 24px;
    box-shadow: var(--shadow);
}

.facts > div {
    display: grid;
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 16px;
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
}

.facts > div:last-child {
    border-bottom: 0;
}

.facts dt {
    color: var(--ink-400);
    font-size: 13px;
}

.facts dd {
    font-size: 14px;
    overflow-wrap: anywhere;
}

.contact-section {
    background: linear-gradient(180deg, #ffffff 0%, #f7faff 100%);
}

.contact-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 40px;
    align-items: start;
}

.contact-intro h2 {
    margin-top: 8px;
    font-size: clamp(24px, 3vw, 32px);
    line-height: 1.3;
}

.contact-intro .lead {
    margin-top: 14px;
}

.contact-points {
    margin: 22px 0 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 10px;
    color: var(--ink-600);
    font-size: 14px;
}

.contact-points li {
    position: relative;
    padding-left: 20px;
}

.contact-points li::before {
    content: "";
    position: absolute;
    left: 2px;
    top: 9px;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--blue-500);
}

.wechat-card {
    margin-top: 22px;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: #ffffff;
    box-shadow: var(--shadow);
}

.wechat-head h3 {
    margin-top: 6px;
    font-size: 17px;
    line-height: 1.4;
}

.wechat-body {
    margin-top: 16px;
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    gap: 18px;
}

.wechat-qr {
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: #ffffff;
    color: var(--ink-600);
    font-family: inherit;
    cursor: pointer;
    display: grid;
    gap: 8px;
    justify-items: center;
    max-width: 100%;
}

.wechat-qr:hover {
    border-color: #c3d2e8;
}

.wechat-qr:focus-visible,
.wechat-copy:focus-visible {
    outline: 3px solid rgba(47, 124, 246, 0.24);
    outline-offset: 2px;
}

.wechat-qr img {
    display: block;
    width: 168px;
    height: 168px;
    max-width: 100%;
    border-radius: 6px;
    background: var(--canvas);
    object-fit: contain;
}

.wechat-qr-hint {
    font-size: 12px;
}

.wechat-id {
    display: grid;
    gap: 8px;
    align-content: start;
    min-width: 0;
}

.wechat-label {
    color: var(--ink-400);
    font-size: 12px;
}

.wechat-id code {
    display: inline-block;
    max-width: 100%;
    padding: 6px 10px;
    border-radius: 8px;
    background: var(--canvas);
    color: var(--ink-900);
    font-size: 16px;
    font-weight: 600;
    overflow-wrap: anywhere;
}

.wechat-copy {
    justify-self: start;
    min-height: 40px;
}

.wechat-status {
    min-height: 18px;
    color: #1d6b3a;
    font-size: 12px;
}

.privacy-note {
    margin-top: 24px;
    padding: 14px 16px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: #ffffff;
    color: var(--ink-600);
    font-size: 12px;
}

.privacy-note a {
    font-weight: 600;
}

.contact-card {
    min-width: 0;
    padding: 26px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: var(--shadow);
}

.lead-form {
    display: grid;
    gap: 16px;
}

.form-row {
    display: grid;
    gap: 6px;
}

.form-row label {
    color: var(--ink-900);
    font-size: 13px;
    font-weight: 600;
}

.form-row-split {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.form-row-split > div {
    display: grid;
    min-width: 0;
    gap: 6px;
}

.optional {
    color: var(--ink-400);
    font-size: 12px;
    font-weight: 400;
}

.lead-form input[type="text"],
.lead-form input[type="tel"],
.lead-form textarea {
    width: 100%;
    min-width: 0;
    min-height: 44px;
    padding: 10px 12px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: #ffffff;
    color: var(--ink-900);
    font-family: inherit;
    font-size: 16px;
    line-height: 1.45;
}

.lead-form textarea {
    resize: vertical;
    min-height: 108px;
}

.lead-form input[type="text"]:focus,
.lead-form input[type="tel"]:focus,
.lead-form textarea:focus {
    outline: 3px solid rgba(47, 124, 246, 0.18);
    outline-offset: 1px;
    border-color: var(--blue-500);
}

.field-hint {
    color: var(--ink-400);
    font-size: 12px;
}

.field-error {
    color: #b42318;
    font-size: 12px;
}

.checkbox-row {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    color: var(--ink-600);
    font-size: 13px;
}

.checkbox-row input {
    width: 20px;
    height: 20px;
    flex: 0 0 20px;
    margin-top: 2px;
    accent-color: var(--blue-600);
}

.checkbox-row label {
    flex: 1;
    cursor: pointer;
}

.form-submit {
    width: 100%;
}

.form-alert {
    margin-bottom: 18px;
    padding: 12px 14px;
    border: 1px solid #bfe5cb;
    border-radius: 10px;
    background: #edf8f1;
    color: #1d6b3a;
    font-size: 14px;
}

.form-alert ul {
    margin: 6px 0 0;
    padding-left: 18px;
}

.form-alert-error {
    border-color: #f3c2bd;
    background: #fff1f0;
    color: #9f2318;
}

.hp-field {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.site-footer {
    background: var(--navy-900);
    color: #cfe0f8;
    padding: 40px 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    gap: 32px;
}

.site-footer strong {
    color: #ffffff;
    font-size: 16px;
}

.site-footer p {
    margin-top: 8px;
    color: #9fb8d8;
    font-size: 13px;
}

.site-footer a {
    color: #8fc0ff;
    font-weight: 600;
}

.site-footer a:hover {
    color: #ffffff;
}

.site-footer .muted {
    color: #829bb9;
    font-size: 12px;
}

.footer-bottom {
    margin-top: 28px;
    padding-top: 18px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 8px;
    color: #829bb9;
    font-size: 12px;
}

@media (max-width: 980px) {
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 26px;
    }
}

@media (max-width: 760px) {
    .site-wrap {
        padding: 0 18px;
    }

    .header-inner {
        min-height: 68px;
        flex-direction: column;
        align-items: flex-start;
        justify-content: center;
        padding-top: 12px;
        padding-bottom: 12px;
        gap: 10px;
    }

    .site-nav {
        width: 100%;
    }

    .site-nav a {
        display: inline-flex;
        align-items: center;
        min-height: 44px;
        padding: 8px 10px;
        white-space: nowrap;
    }

    .hero-points {
        gap: 8px 14px;
    }

    .checkbox-row label {
        display: flex;
        align-items: center;
        min-height: 44px;
    }

    .contact-card {
        padding: 20px;
    }

    .form-row-split {
        grid-template-columns: 1fr;
    }

    .wechat-body {
        flex-direction: column;
    }

    .hero-inner {
        padding-top: 52px;
        padding-bottom: 52px;
    }

    .section {
        padding: 48px 0;
    }

    .about-grid,
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .facts {
        padding: 4px 18px;
    }

    .facts > div {
        grid-template-columns: 1fr;
        gap: 2px;
    }
}