:root {
    --purple: #814cf6;
    --blue: #319cff;
    --ink: #101c35;
    --muted: #728098;
    --line: #edf0f7;
    --shadow: 0 16px 38px #273b7910;
}
* {
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
    scroll-padding-top: 105px;
}
body {
    margin: 0;
    background: linear-gradient(180deg, #fbfcff, #f0f5ff);
    font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    color: var(--ink);
    font-size: 16px;
}
a {
    color: inherit;
    text-decoration: none;
}
button {
    font: inherit;
    cursor: pointer;
}
a:focus-visible,
button:focus-visible {
    outline: 3px solid #1d74ef;
    outline-offset: 5px;
}
header {
    position: sticky;
    top: 0;
    background: #ffffffed;
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
    z-index: 10;
}
.header-inner {
    max-width: 1420px;
    padding: 18px 44px;
    margin: auto;
    display: flex;
    align-items: center;
    gap: 36px;
}
.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}
.brand img {
    width: 48px;
    height: 48px;
    object-fit: contain;
}
.brand strong {
    font-size: 23px;
    letter-spacing: -1px;
}
.brand small {
    display: block;
    font-size: 12px;
    color: var(--muted);
    margin-top: 3px;
}
nav {
    display: flex;
    align-items: center;
    gap: 30px;
    margin: auto;
    white-space: nowrap;
}
nav a {
    font-weight: 700;
    font-size: 15px;
    position: relative;
    padding: 12px 0;
}
nav a.active {
    color: #4584f7;
}
nav a.active:after {
    content: "";
    height: 3px;
    background: linear-gradient(90deg, var(--blue), var(--purple));
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    border-radius: 3px;
}
.contacts {
    display: flex;
    gap: 12px;
}
.pill {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: 28px;
    color: white;
    padding: 12px 18px;
    font-size: 13px;
    font-weight: 700;
    box-shadow: 0 7px 20px #317cff20;
    white-space: nowrap;
}
.pill img {
    width: 20px;
    height: 20px;
}
.telegram {
    background: linear-gradient(110deg, #32a6ff, #3267ff);
}
.whatsapp {
    background: linear-gradient(110deg, #20d79a, #08bb7a);
}
main {
    max-width: 1280px;
    margin: 56px auto 40px;
    padding: 0 36px;
}
.panel {
    border: 1px solid var(--line);
    border-radius: 22px;
    background: #fff;
    box-shadow: var(--shadow);
    padding: 28px;
    margin-bottom: 28px;
}
.section-heading {
    border-left: 6px solid var(--purple);
    padding-left: 18px;
    margin-bottom: 24px;
}
.section-heading h1,
.section-heading h2 {
    font-size: 25px;
    line-height: 1.5;
    margin: 0 0 3px;
    font-weight: 800;
}
.section-heading p {
    color: var(--muted);
    margin: 0;
    line-height: 1.6;
    font-size: 16px;
}
.title-icon {
    width: 25px;
    height: 25px;
    vertical-align: -4px;
    margin-right: 9px;
}
.ip-panel {
    display: grid;
    grid-template-columns: 1fr 340px;
    align-items: center;
    min-height: 375px;
    gap: 25px;
}
.ip-panel .section-heading {
    margin-bottom: 24px;
}
.shield {
    width: 100%;
    height: 315px;
    object-fit: contain;
}
.ip-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}
.ip-card {
    display: flex;
    align-items: center;
    gap: 22px;
    border: 1px solid var(--line);
    box-shadow: 0 10px 30px #2c3e7610;
    border-radius: 20px;
    min-height: 105px;
    padding: 23px;
    transition:
        transform 0.2s,
        box-shadow 0.2s;
}
.ip-card:hover,
.market-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px #6446ba18;
}
.ip-card img {
    width: 48px;
    height: 48px;
    object-fit: contain;
}
.ip-card strong {
    display: block;
    font-size: 16px;
    margin-bottom: 9px;
}
.ip-card small {
    font-size: 13px;
    color: var(--muted);
}
.arrow {
    margin-left: auto;
    color: var(--purple);
    font-size: 28px;
}
.client-list {
    display: grid;
    gap: 20px;
}
.client {
    display: grid;
    grid-template-columns: 1fr 425px;
    gap: 28px;
    align-items: center;
    border: 1px solid var(--line);
    box-shadow: 0 9px 25px #23326008;
    border-radius: 20px;
    padding: 24px;
}
.client-info {
    display: flex;
    align-items: center;
    gap: 26px;
}
.number {
    background: #f1ecff;
    border-radius: 12px;
    padding: 21px 13px;
    font-size: 22px;
    color: var(--purple);
    font-weight: 800;
}
.client-icon {
    height: 54px;
    width: 54px;
    object-fit: contain;
}
.client h3 {
    font-size: 17px;
    margin: 0 0 9px;
    line-height: 1.6;
}
.client p {
    font-size: 14px;
    color: var(--muted);
    margin: 0;
    line-height: 1.7;
}
.client p.highlight {
    color: #e39732;
}
.download-area {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}
.tutorial {
    grid-column: 1/-1;
    padding: 14px;
    background: #f7f3ff;
    border-radius: 12px;
    text-align: center;
    color: var(--purple);
    font-size: 14px;
    font-weight: 700;
}
.download {
    display: block;
    border: 0;
    text-align: center;
    border-radius: 11px;
    padding: 13px 8px;
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    transition:
        filter 0.2s,
        transform 0.2s;
}
.download:hover,
.pill:hover {
    filter: brightness(1.07);
    transform: translateY(-1px);
}
.overseas {
    background: linear-gradient(110deg, #31a8fc, #3068ff);
}
.domestic {
    background: linear-gradient(110deg, #995dff, #6b31ec);
}
.market-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.market-card {
    border: 1px solid var(--line);
    border-radius: 20px;
    box-shadow: 0 8px 26px #2c3e7609;
    padding: 24px;
    transition:
        transform 0.2s,
        box-shadow 0.2s;
}
.market-top {
    display: flex;
    gap: 16px;
    align-items: center;
    margin-bottom: 22px;
}
.market-top img {
    width: 50px;
    height: 50px;
    object-fit: contain;
}
.market-top h3 {
    font-size: 17px;
    line-height: 1.5;
    margin: 0 0 5px;
}
.market-top p {
    font-size: 13px;
    color: var(--muted);
    margin: 0;
}
.market-links {
    display: grid;
    gap: 10px;
}
.market-links a {
    background: #f7f3ff;
    border-radius: 10px;
    color: var(--purple);
    padding: 13px;
    text-align: center;
    font-size: 14px;
    font-weight: 700;
}
.market-links a:hover,
.tutorial:hover {
    background: #eee5ff;
}
.benefits {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    padding: 25px 20px 10px;
}
.benefit {
    display: flex;
    gap: 15px;
    align-items: center;
}
.benefit img {
    height: 43px;
    width: 43px;
    object-fit: contain;
}
.benefit strong {
    font-size: 16px;
}
.benefit p {
    font-size: 13px;
    color: var(--muted);
    margin: 6px 0 0;
}
footer {
    text-align: center;
    color: #929ab0;
    font-size: 12px;
    padding: 25px;
}
.menu {
    display: none;
    border: 1px solid var(--line);
    background: white;
    border-radius: 9px;
    width: 40px;
    height: 40px;
    font-size: 21px;
}
dialog {
    border: 1px solid var(--line);
    border-radius: 20px;
    max-width: 480px;
    width: calc(100% - 40px);
    padding: 28px;
    box-shadow: var(--shadow);
    color: var(--ink);
}
dialog::backdrop {
    background: #13203e55;
    backdrop-filter: blur(4px);
}
dialog h2 {
    font-size: 21px;
    margin-top: 0;
}
dialog p {
    font-size: 15px;
    color: var(--muted);
    line-height: 1.8;
}
.modal-actions {
    display: flex;
    gap: 10px;
    margin-top: 24px;
}
.modal-actions > * {
    flex: 1;
}
.close-modal {
    border: 1px solid var(--line);
    border-radius: 11px;
    background: #f7f8fc;
    color: var(--muted);
    font-size: 14px;
}
@media (min-width: 1450px) {
    main {
        max-width: 1420px;
    }
    .header-inner {
        gap: 50px;
    }
    .ip-panel {
        grid-template-columns: 1fr 380px;
    }
}
@media (max-width: 1150px) {
    .header-inner {
        padding: 15px 26px;
        gap: 20px;
    }
    .contacts .whatsapp {
        display: none;
    }
    nav {
        gap: 20px;
    }
    .ip-panel {
        grid-template-columns: 1fr 270px;
    }
    .client {
        grid-template-columns: 1fr 360px;
    }
    .client-info {
        gap: 16px;
    }
    .brand strong {
        font-size: 21px;
    }
}
@media (max-width: 900px) {
    .contacts {
        display: none;
    }
    .ip-panel {
        grid-template-columns: 1fr 220px;
        gap: 12px;
    }
    .ip-grid {
        grid-template-columns: 1fr;
    }
    .shield {
        height: 270px;
    }
    .client {
        grid-template-columns: 1fr;
    }
    .market-grid {
        grid-template-columns: 1fr;
    }
    .market-card {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }
    .market-top {
        margin: 0;
    }
    .benefits {
        grid-template-columns: 1fr 1fr;
    }
}
@media (max-width: 600px) {
    .header-inner {
        padding: 13px 18px;
        justify-content: space-between;
    }
    .brand img {
        width: 40px;
        height: 40px;
    }
    .brand strong {
        font-size: 20px;
    }
    .menu {
        display: block;
    }
    nav {
        display: none;
        position: absolute;
        left: 0;
        right: 0;
        top: 72px;
        padding: 15px 20px;
        background: white;
        box-shadow: var(--shadow);
        gap: 10px;
        flex-wrap: wrap;
    }
    nav.open {
        display: flex;
    }
    nav a {
        flex: 1;
        text-align: center;
        font-size: 14px;
    }
    main {
        margin-top: 24px;
        padding: 0 16px;
    }
    .panel {
        padding: 22px 18px;
        border-radius: 18px;
        margin-bottom: 20px;
    }
    .ip-panel {
        display: block;
        min-height: 0;
    }
    .shield {
        display: block;
        height: 200px;
        width: 220px;
        margin: 10px auto 0;
    }
    .section-heading {
        padding-left: 12px;
        border-left-width: 5px;
        margin-bottom: 20px;
    }
    .section-heading h1,
    .section-heading h2 {
        font-size: 21px;
    }
    .section-heading p {
        font-size: 14px;
    }
    .ip-grid {
        gap: 12px;
    }
    .ip-card {
        min-height: 90px;
        padding: 18px;
        gap: 17px;
    }
    .client {
        padding: 18px 15px;
        gap: 18px;
        border-radius: 16px;
    }
    .client-info {
        gap: 12px;
        align-items: flex-start;
    }
    .number {
        font-size: 17px;
        padding: 15px 9px;
    }
    .client-icon {
        width: 40px;
        height: 40px;
        margin-top: 6px;
    }
    .client h3 {
        font-size: 15px;
    }
    .client p {
        font-size: 13px;
    }
    .download {
        font-size: 12px;
        line-height: 1.6;
    }
    .market-card {
        display: block;
        padding: 20px;
    }
    .market-top {
        margin-bottom: 20px;
    }
    .benefits {
        padding: 15px 5px;
        gap: 25px 10px;
    }
    .benefit {
        gap: 10px;
        align-items: flex-start;
    }
    .benefit img {
        width: 32px;
        height: 32px;
    }
    .benefit strong {
        font-size: 14px;
    }
    .benefit p {
        font-size: 12px;
        line-height: 1.6;
    }
}

/* Qingping: navy, teal and a compact workspace composition */
:root {
    --purple: #0e9c8c;
    --blue: #139cbd;
    --ink: #15324a;
    --muted: #667e8e;
    --line: #dce7eb;
    --shadow: 0 8px 24px #15324a06;
}
body {
    background: #eef3f5;
    color: var(--ink);
}
header {
    background: #102a43;
    border: 0;
}
.header-inner {
    max-width: 1320px;
    padding: 20px 36px;
    gap: 28px;
}
.brand strong {
    color: #fff;
    font-size: 22px;
    letter-spacing: 2px;
}
.brand small {
    color: #aac1ce;
    font-size: 12px;
}
.brand img {
    width: 44px;
    height: 44px;
}
nav {
    gap: 24px;
}
nav a {
    color: #bacbd5;
    font-weight: 500;
}
nav a.active {
    color: #5eead4;
}
nav a.active:after {
    background: #5eead4;
    height: 2px;
}
.pill {
    border-radius: 8px;
    padding: 11px 13px;
    box-shadow: none;
    font-size: 12px;
}
.telegram {
    background: #20425b;
}
.whatsapp {
    background: #176b66;
}
.pill img {
    width: 17px;
    height: 17px;
}
main {
    max-width: 1320px;
    margin: 32px auto;
    padding: 0 36px;
}
.panel {
    border-radius: 12px;
    padding: 26px;
    border: 1px solid var(--line);
    box-shadow: none;
    margin-bottom: 24px;
}
.section-heading {
    border: 0;
    padding: 0;
    margin-bottom: 24px;
}
.section-heading h1,
.section-heading h2 {
    font-weight: 700;
    font-size: 24px;
    letter-spacing: 0.5px;
}
.section-heading p {
    font-size: 14px;
    margin-top: 7px;
}
.title-icon {
    margin-right: 10px;
    width: 26px;
    height: 26px;
}
.ip-panel {
    grid-template-columns: 1fr 340px;
    gap: 36px;
    min-height: 300px;
    background: #fff;
}
.ip-grid {
    gap: 14px;
}
.ip-card {
    border-radius: 8px;
    padding: 20px;
    gap: 14px;
    min-height: 112px;
    box-shadow: none;
    background: #f7fafb;
    border: 1px solid #e0eaee;
}
.ip-card img {
    width: 37px;
    height: 37px;
}
.ip-card strong {
    font-size: 15px;
}
.ip-card small {
    font-size: 13px;
}
.arrow {
    font-size: 23px;
}
.ip-card:hover,
.market-card:hover {
    box-shadow: 0 8px 18px #102a4310;
    transform: translateY(-2px);
    border-color: #0e9c8c;
}
.network-summary {
    background: #14364d;
    border-radius: 9px;
    padding: 26px;
    color: white;
    align-self: stretch;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.eyebrow {
    color: #70dccc;
    font-size: 11px;
    letter-spacing: 2px;
}
.network-summary h2 {
    font-size: 31px;
    line-height: 1.5;
    font-weight: 600;
    letter-spacing: 2px;
    margin: 16px 0 12px;
}
.network-summary p {
    font-size: 12px;
    color: #a8c1ce;
    margin: 0;
    line-height: 1.8;
}
.summary-bottom {
    display: flex;
    justify-content: space-between;
    border-top: 1px solid #ffffff20;
    margin-top: 22px;
    padding-top: 16px;
    font-size: 11px;
    color: #a8c1ce;
}
.client-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}
.client {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: space-between;
    padding: 22px 18px;
    gap: 24px;
    border-radius: 9px;
    box-shadow: none;
    background: #fbfcfd;
}
.client-info {
    gap: 12px;
    flex-wrap: wrap;
    align-items: center;
}
.number {
    order: 0;
    width: 100%;
    padding: 0;
    background: none;
    font-size: 12px;
    color: #8397a3;
    letter-spacing: 2px;
}
.client-icon {
    width: 44px;
    height: 44px;
    background: #e6f4f0;
    border-radius: 10px;
    padding: 8px;
}
.client-info > div {
    flex: 1;
    min-width: 150px;
}
.client h3 {
    font-size: 15px;
    line-height: 1.7;
    margin-bottom: 7px;
}
.client p {
    font-size: 13px;
}
.client p.highlight {
    color: #657e8e;
}
.tutorial {
    background: none;
    border: 1px solid #dce7eb;
    border-radius: 6px;
    font-size: 12px;
    padding: 12px;
    color: #356277;
}
.download-area {
    gap: 8px;
}
.download {
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    padding: 12px 7px;
}
.overseas {
    background: #118e82;
}
.domestic {
    background: #24485f;
}
.tutorial:hover,
.market-links a:hover {
    background: #e8f5f2;
}
.market-grid {
    gap: 18px;
}
.market-card {
    border-radius: 9px;
    background: #fbfcfd;
    box-shadow: none;
    padding: 22px;
}
.market-top h3 {
    font-size: 16px;
}
.market-top img {
    width: 42px;
    height: 42px;
    background: #e6f4f0;
    border-radius: 10px;
    padding: 7px;
}
.market-links a {
    background: white;
    border: 1px solid #dce7eb;
    border-radius: 6px;
    color: #356277;
    font-size: 13px;
    font-weight: 500;
}
.benefits {
    background: #e4ecef;
    border-radius: 10px;
    padding: 24px;
    gap: 20px;
}
.benefit img {
    width: 33px;
    height: 33px;
}
.benefit strong {
    font-size: 14px;
}
.benefit p {
    font-size: 12px;
}
footer {
    padding: 12px 0 28px;
    color: #7b909c;
}
dialog {
    border-radius: 12px;
}
.close-modal {
    border-radius: 6px;
}
@media (min-width: 1450px) {
    main {
        max-width: 1320px;
    }
    .header-inner {
        gap: 28px;
    }
    .ip-panel {
        grid-template-columns: 1fr 340px;
    }
}
@media (max-width: 1150px) {
    .header-inner {
        padding: 18px 26px;
        gap: 20px;
    }
    .contacts {
        display: none;
    }
    .client-list {
        grid-template-columns: 1fr;
    }
    .client {
        display: grid;
        grid-template-columns: 1fr 350px;
    }
    .client-info {
        flex-wrap: nowrap;
    }
    .number {
        width: auto;
    }
    .ip-panel {
        grid-template-columns: 1fr 280px;
    }
    .client-info > div {
        min-width: 0;
    }
}
@media (max-width: 900px) {
    .ip-panel {
        grid-template-columns: 1fr 250px;
    }
    .ip-grid {
        grid-template-columns: 1fr;
    }
    .market-grid {
        grid-template-columns: 1fr;
    }
    .market-card {
        display: grid;
        grid-template-columns: 1fr 1fr;
    }
    .network-summary h2 {
        font-size: 26px;
    }
    .benefits {
        grid-template-columns: 1fr 1fr;
    }
}
@media (max-width: 600px) {
    .header-inner {
        padding: 15px 18px;
    }
    .brand strong {
        font-size: 20px;
    }
    .brand small {
        font-size: 11px;
    }
    .menu {
        color: #5eead4;
        background: #20425b;
        border-color: #355569;
    }
    nav {
        top: 74px;
        background: #102a43;
        padding: 16px 12px;
    }
    nav a {
        font-size: 13px;
    }
    main {
        padding: 0 16px;
        margin-top: 20px;
    }
    .panel {
        padding: 20px 16px;
        border-radius: 10px;
    }
    .ip-panel {
        display: flex;
        flex-direction: column;
        gap: 20px;
        align-items: stretch;
    }
    .network-summary {
        padding: 22px;
        min-height: 210px;
        order: -1;
    }
    .network-summary h2 {
        font-size: 27px;
        margin: 10px 0;
    }
    .summary-bottom {
        margin-top: 15px;
        padding-top: 12px;
    }
    .section-heading h1,
    .section-heading h2 {
        font-size: 21px;
    }
    .section-heading p {
        font-size: 13px;
    }
    .ip-grid {
        gap: 10px;
    }
    .ip-card {
        padding: 17px;
        min-height: 90px;
    }
    .client {
        display: flex;
        padding: 20px 16px;
        gap: 18px;
    }
    .client-info {
        gap: 13px;
        align-items: center;
    }
    .number {
        width: auto;
        padding: 0;
        font-size: 12px;
    }
    .client-icon {
        margin: 0;
    }
    .client h3 {
        font-size: 15px;
    }
    .client-info > div {
        min-width: 0;
    }
    .market-card {
        display: block;
        padding: 20px;
    }
    .market-top {
        margin-bottom: 18px;
    }
    .benefits {
        padding: 20px 16px;
        gap: 24px 12px;
    }
    .benefit {
        gap: 9px;
    }
    .benefit img {
        width: 28px;
        height: 28px;
    }
    .benefit strong {
        font-size: 13px;
    }
    .benefit p {
        font-size: 12px;
    }
}

.brand {
    gap: 13px;
}
.brand strong {
    font-weight: 500;
    letter-spacing: 3px;
    font-size: 21px;
}
.brand small {
    letter-spacing: 2.5px;
    font-size: 9px;
    margin-top: 7px;
    color: #94aebb;
}
.brand img {
    width: 44px;
    height: 44px;
}
@media (max-width: 600px) {
    .brand strong {
        font-size: 19px;
    }
    .brand small {
        font-size: 8px;
        letter-spacing: 2px;
    }
}
.brand img {
    width: 64px;
    height: 64px;
    object-fit: contain;
    background: #fff;
    border-radius: 8px;
    padding: 3px;
}
.brand {
    gap: 14px;
}
@media (max-width: 600px) {
    .brand img {
        width: 52px;
        height: 52px;
    }
    .header-inner {
        padding: 11px 18px;
    }
    nav {
        top: 74px;
    }
}

.page-label {
    font-size: 12px;
    letter-spacing: 2px;
    color: #0e9c8c;
    font-weight: 700;
}
.intro {
    margin: 8px 0 30px;
}
.intro h1 {
    font-size: 36px;
    margin: 12px 0;
    line-height: 1.4;
}
.intro p {
    color: var(--muted);
    line-height: 1.8;
    margin: 0;
    font-size: 16px;
}
.home-hero {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 55px;
    background: #102a43;
    border: 0;
    padding: 48px;
    color: white;
    align-items: center;
}
.home-hero h1 {
    font-size: 46px;
    line-height: 1.4;
    letter-spacing: 1px;
    margin: 18px 0 20px;
}
.home-hero h1 span {
    color: #79e4cc;
}
.home-hero p {
    font-size: 16px;
    color: #b7cbd7;
    line-height: 1.9;
    max-width: 500px;
}
.hero-actions {
    display: flex;
    gap: 12px;
    margin-top: 28px;
}
.action {
    display: inline-block;
    background: #118e82;
    color: white;
    border: 0;
    border-radius: 6px;
    padding: 14px 22px;
    font-size: 14px;
    text-align: center;
    cursor: pointer;
}
.action.secondary {
    background: #24485f;
}
.hero-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    border: 1px solid #ffffff20;
    border-radius: 12px;
    padding: 30px;
    background: #193a50;
}
.hero-brand img {
    width: 200px;
    height: 200px;
    object-fit: contain;
    background: white;
    border-radius: 12px;
}
.hero-brand strong {
    font-size: 20px;
    margin-top: 20px;
    letter-spacing: 5px;
}
.hero-brand small {
    letter-spacing: 3px;
    font-size: 12px;
    color: #93b2c4;
    margin-top: 10px;
}
.highlights {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin: 24px 0 34px;
}
.highlight-item {
    background: white;
    border: 1px solid var(--line);
    border-radius: 9px;
    padding: 24px;
}
.highlight-item strong {
    font-size: 21px;
}
.highlight-item p {
    color: var(--muted);
    font-size: 14px;
    line-height: 1.6;
    margin: 10px 0 0;
}
.feature-grid,
.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}
.feature,
.product {
    border: 1px solid var(--line);
    background: white;
    border-radius: 10px;
    padding: 26px;
    display: flex;
    flex-direction: column;
}
.feature h3,
.product h3 {
    font-size: 20px;
    line-height: 1.5;
    margin: 18px 0 12px;
}
.feature p,
.product p {
    font-size: 15px;
    line-height: 1.9;
    color: var(--muted);
    margin: 0;
}
.feature ul,
.product ul {
    padding-left: 20px;
    color: var(--muted);
    font-size: 14px;
    line-height: 2;
    margin-bottom: 24px;
}
.feature a,
.product a {
    color: #0e9c8c;
    font-size: 14px;
    margin-top: auto;
    padding-top: 16px;
    border-top: 1px solid var(--line);
}
.index-num {
    font-size: 12px;
    letter-spacing: 2px;
    color: #728b9a;
}
.tag {
    align-self: flex-start;
    font-size: 12px;
    background: #e6f4f0;
    color: #167e70;
    border-radius: 4px;
    padding: 6px 9px;
}
.section-title {
    font-size: 26px;
    margin: 34px 0 12px;
}
.section-copy {
    color: var(--muted);
    font-size: 15px;
    margin-bottom: 24px;
    line-height: 1.8;
}
.cta-strip {
    padding: 32px;
    margin-top: 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 25px;
    background: #dfedea;
    border-radius: 10px;
}
.cta-strip h2 {
    font-size: 23px;
    margin: 0 0 10px;
}
.cta-strip p {
    font-size: 14px;
    color: var(--muted);
    margin: 0;
}
.vcf-layout {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 24px;
    align-items: start;
}
.vcf-layout .panel {
    margin: 0;
}
label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--ink);
    margin-bottom: 9px;
}
input,
textarea {
    font: inherit;
    color: var(--ink);
    width: 100%;
    border: 1px solid #cbdce4;
    border-radius: 6px;
    background: #fbfcfd;
    padding: 12px;
    outline: none;
}
input:focus,
textarea:focus {
    border-color: #0e9c8c;
    box-shadow: 0 0 0 3px #0e9c8c15;
}
textarea {
    resize: vertical;
    min-height: 245px;
    font-size: 14px;
    line-height: 1.7;
}
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
    margin-bottom: 22px;
}
.field {
    margin-bottom: 22px;
}
.checks {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}
.checks label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
}
.checks input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: #118e82;
}
.checks input[type="number"] {
    width: 90px;
    padding: 7px;
}
.form-help {
    font-size: 13px;
    color: var(--muted);
    line-height: 1.8;
    margin-top: 12px;
}
.form-error {
    color: #bc3a3a;
    font-size: 14px;
    white-space: pre-line;
}
.preview-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}
.preview-title h2 {
    font-size: 21px;
    margin: 0;
}
.preview-title span {
    font-size: 13px;
    color: var(--muted);
}
.empty {
    padding: 80px 15px;
    text-align: center;
    color: var(--muted);
    font-size: 15px;
    line-height: 1.8;
    background: #f5f9fa;
    border-radius: 7px;
    margin-top: 22px;
}
.preview-scroll {
    max-height: 430px;
    overflow: auto;
    margin: 20px 0;
}
table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    text-align: left;
}
td,
th {
    padding: 12px;
    border-bottom: 1px solid var(--line);
    overflow-wrap: anywhere;
}
th {
    background: #f3f7f8;
    font-weight: 500;
}
#download-vcf[hidden],
#preview-table[hidden],
.empty[hidden] {
    display: none;
}
.privacy-note {
    background: #e6f4f0;
    border-radius: 7px;
    color: #246d61;
    font-size: 14px;
    padding: 18px;
    line-height: 1.8;
    margin-top: 22px;
}
.mini-steps {
    display: flex;
    gap: 25px;
    font-size: 14px;
    color: var(--muted);
    margin-bottom: 25px;
    flex-wrap: wrap;
}
@media (max-width: 950px) {
    .home-hero {
        gap: 30px;
        padding: 32px;
    }
    .home-hero h1 {
        font-size: 35px;
    }
    .hero-brand img {
        width: 150px;
        height: 150px;
    }
    .feature-grid,
    .product-grid {
        grid-template-columns: 1fr 1fr;
    }
    .vcf-layout {
        grid-template-columns: 1fr;
    }
    .highlights {
        grid-template-columns: 1fr 1fr;
    }
}
@media (max-width: 600px) {
    .home-hero {
        grid-template-columns: 1fr;
        padding: 26px 22px;
        gap: 26px;
    }
    .home-hero h1 {
        font-size: 32px;
    }
    .hero-brand {
        padding: 22px;
    }
    .hero-brand img {
        width: 160px;
        height: 160px;
    }
    .feature-grid,
    .product-grid {
        grid-template-columns: 1fr;
    }
    .highlights {
        gap: 10px;
    }
    .highlight-item {
        padding: 18px 14px;
    }
    .highlight-item strong {
        font-size: 18px;
    }
    .highlight-item p {
        font-size: 13px;
    }
    .intro h1 {
        font-size: 28px;
    }
    .intro p {
        font-size: 15px;
    }
    .cta-strip {
        display: block;
        padding: 24px;
    }
    .cta-strip .action {
        margin-top: 20px;
    }
    .form-row {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .checks {
        gap: 12px;
    }
    .feature,
    .product {
        padding: 22px;
    }
    .section-title {
        font-size: 23px;
    }
    .hero-actions {
        gap: 10px;
    }
    .action {
        padding: 13px 16px;
    }
    .empty {
        padding: 50px 10px;
    }
    td,
    th {
        padding: 10px 7px;
    }
}

/* Zhangguo technology theme */
:root {
    --purple: #4fe2fa;
    --blue: #587cff;
    --ink: #e8f0ff;
    --muted: #9aadc8;
    --line: #ffffff15;
    --shadow: 0 22px 55px #00000030;
}
body {
    background: #070e1d;
    background-image:
        radial-gradient(ellipse at 12% 0%, #19396e55, transparent 45%),
        radial-gradient(ellipse at 95% 45%, #083d4d35, transparent 50%);
    color: var(--ink);
    font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
}
header {
    background: #091325ed;
    backdrop-filter: blur(22px);
    border-bottom: 1px solid #7297f024;
}
.header-inner {
    max-width: 1380px;
    padding: 18px 36px;
}
.brand strong {
    color: #f1f6ff;
    font-weight: 600;
    letter-spacing: 3px;
}
.brand small {
    color: #859fc4;
}
.brand img {
    background: #fff;
    border-radius: 10px;
    border: 1px solid #ffffff38;
}
nav a {
    color: #9eb1cd;
    font-size: 14px;
}
nav a.active {
    color: #6ce6ff;
}
nav a.active:after {
    background: linear-gradient(90deg, #587cff, #4fe2fa);
    box-shadow: 0 0 12px #4fe2fa65;
}
.pill {
    background: #152540;
    border: 1px solid #6da9fa25;
    border-radius: 7px;
    box-shadow: none;
    color: #dceaff;
}
.whatsapp {
    background: #12313d;
    border-color: #4fe2fa25;
}
.menu {
    background: #172846;
    border-color: #587cff40;
    color: #69e5fa;
}
main {
    max-width: 1380px;
    margin: 38px auto;
    padding: 0 36px;
}
.panel {
    background: linear-gradient(145deg, #152440c4, #101b30e8);
    border: 1px solid #7395d52b;
    box-shadow: var(--shadow);
    border-radius: 16px;
    padding: 30px;
}
.page-label,
.eyebrow {
    font-size: 12px;
    letter-spacing: 2.5px;
    color: #66deff;
}
.intro {
    padding: 14px 0 22px;
    margin: 0 0 20px;
    max-width: 900px;
}
.intro h1 {
    font-size: 40px;
    font-weight: 700;
    letter-spacing: 1px;
}
.intro p {
    line-height: 1.9;
    color: #9aadc8;
}
.section-title {
    font-size: 27px;
    letter-spacing: 0.5px;
    margin-top: 38px;
}
.section-copy {
    color: #9aadc8;
    line-height: 1.9;
    font-size: 15px;
}
.home-hero {
    position: relative;
    overflow: hidden;
    grid-template-columns: 1.3fr 1fr;
    border-color: #587cff50;
    background: linear-gradient(115deg, #142c52, #10273d 60%, #101a33);
    padding: 56px;
    gap: 50px;
}
.home-hero:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(
        90deg,
        transparent,
        #587cff,
        #4fe2fa,
        transparent
    );
}
.home-hero h1 {
    font-size: 46px;
    line-height: 1.5;
}
.home-hero h1 span {
    color: #74e6ff;
}
.home-hero p {
    color: #adc2df;
    font-size: 16px;
}
.hero-brand {
    background: #07132665;
    border: 1px solid #69b4ed38;
    box-shadow: inset 0 0 45px #315c8b15;
    border-radius: 14px;
    padding: 34px;
}
.hero-brand img {
    width: 175px;
    height: 175px;
    border-radius: 12px;
}
.hero-brand strong {
    color: #ecf4ff;
}
.hero-brand small {
    color: #86a1c1;
    font-size: 12px;
}
.action,
.download.overseas {
    background: linear-gradient(110deg, #3d64eb, #248ebc);
    color: white;
    border: 1px solid #84a5ff40;
    box-shadow: 0 7px 20px #345de825;
    border-radius: 7px;
    font-size: 14px;
    font-weight: 600;
    transition:
        transform 0.18s,
        filter 0.18s,
        box-shadow 0.18s;
}
.action:hover,
.download:hover {
    transform: translateY(-2px);
    filter: brightness(1.12);
    box-shadow: 0 9px 25px #3d64eb35;
}
.action.secondary,
.domestic {
    background: #152b47;
    border: 1px solid #66cde638;
    box-shadow: none;
    color: #c3e6ff;
}
.highlights {
    gap: 14px;
    margin: 22px 0 38px;
}
.highlight-item {
    background: #102039b5;
    border: 1px solid #799cda25;
    border-radius: 10px;
    padding: 25px;
    position: relative;
}
.highlight-item:before {
    content: "";
    position: absolute;
    top: 24px;
    bottom: 24px;
    left: 0;
    width: 2px;
    background: #587cff;
}
.highlight-item strong {
    font-size: 20px;
    color: #dfeaff;
}
.highlight-item p {
    color: #8fa8ca;
    font-size: 14px;
}
.product-grid,
.feature-grid {
    gap: 20px;
}
.product,
.feature {
    position: relative;
    overflow: hidden;
    background: linear-gradient(145deg, #142441, #0d1a2e);
    border: 1px solid #7197d82c;
    border-radius: 12px;
    padding: 28px;
    box-shadow: 0 16px 36px #00000018;
    transition:
        transform 0.2s,
        border-color 0.2s,
        box-shadow 0.2s;
}
.product:hover,
.feature:hover {
    transform: translateY(-4px);
    border-color: #50c7ed70;
    box-shadow: 0 15px 40px #1739693b;
}
.product:before,
.feature:before {
    content: "";
    position: absolute;
    top: 0;
    left: 28px;
    width: 45px;
    height: 2px;
    background: linear-gradient(90deg, #587cff, #4fe2fa);
}
.tag {
    font-size: 12px;
    color: #8ee7ff;
    background: #285d851f;
    border: 1px solid #62dfff30;
    border-radius: 5px;
    letter-spacing: 0.5px;
    padding: 7px 10px;
}
.product h3,
.feature h3 {
    font-size: 21px;
    color: #edf3ff;
    line-height: 1.6;
    margin: 20px 0 12px;
}
.product p,
.feature p {
    color: #9bb1cf;
    font-size: 15px;
    line-height: 1.9;
}
.product ul,
.feature ul {
    color: #91a9cb;
    line-height: 2.1;
    font-size: 14px;
}
.product li::marker,
.feature li::marker {
    color: #5d97e9;
}
.product a,
.feature a {
    color: #69dbff;
    border-color: #7494d023;
    padding-top: 18px;
    font-size: 14px;
}
.index-num {
    color: #6d92c0;
    font-size: 12px;
    letter-spacing: 2px;
}
.cta-strip {
    background: linear-gradient(110deg, #172e51, #123746);
    border: 1px solid #66cde62d;
    box-shadow: none;
    padding: 32px;
    border-radius: 12px;
}
.cta-strip h2 {
    color: #e4f1ff;
}
.cta-strip p {
    color: #9db7d5;
}
.section-heading h1,
.section-heading h2 {
    color: #edf3ff;
}
.section-heading p {
    color: #9aadc8;
}
.ip-panel {
    background: linear-gradient(130deg, #142440, #0e1f35);
}
.ip-card {
    background: #10213a;
    border-color: #709bd92a;
    box-shadow: none;
    border-radius: 10px;
}
.ip-card:hover {
    background: #142b49;
    border-color: #50c7ed70;
    box-shadow: 0 10px 30px #00000025;
}
.ip-card strong {
    color: #e3efff;
}
.ip-card small {
    color: #8fa8ca;
}
.arrow {
    color: #67dbff;
}
.network-summary {
    background: linear-gradient(145deg, #174265, #182949);
    border: 1px solid #66cde62e;
    border-radius: 10px;
}
.network-summary h2 {
    color: #e7f6ff;
}
.network-summary p,
.summary-bottom {
    color: #9dbdd7;
}
.client,
.market-card {
    background: linear-gradient(145deg, #13223a, #0e1b30);
    border: 1px solid #709bd92a;
    box-shadow: none;
    border-radius: 10px;
}
.client-icon,
.market-top img {
    background: #48b6c313;
    border: 1px solid #62dfff25;
}
.client h3,
.market-top h3 {
    color: #e6f0ff;
}
.client p,
.client p.highlight,
.market-top p {
    color: #9aadc8;
}
.number {
    color: #69a3db;
}
.tutorial,
.market-links a {
    background: #162a46;
    border: 1px solid #6c9bd22b;
    color: #9ed9f4;
    border-radius: 6px;
}
.tutorial:hover,
.market-links a:hover {
    background: #1c3957;
}
.market-card:hover {
    border-color: #50c7ed70;
    box-shadow: 0 10px 30px #00000025;
}
.benefits {
    background: #102038;
    border: 1px solid #799cda25;
    border-radius: 10px;
}
.benefit strong {
    color: #d7e7fd;
}
.benefit p {
    color: #8fa8ca;
}
.vcf-layout .panel {
    background: #101e35;
}
.vcf-layout label {
    color: #c7d9f1;
}
.vcf-layout input,
.vcf-layout textarea {
    background: #081427;
    color: #e7efff;
    border-color: #7298d338;
    font-size: 15px;
    box-shadow: none;
}
.vcf-layout input::placeholder,
.vcf-layout textarea::placeholder {
    color: #6881a4;
}
.vcf-layout input:focus,
.vcf-layout textarea:focus {
    border-color: #5fbde8;
    box-shadow: 0 0 0 3px #4fe2fa10;
}
.checks input[type="checkbox"] {
    accent-color: #587cff;
}
.form-help,
.mini-steps,
.preview-title span {
    color: #8ba5c7;
}
.empty {
    background: #0a172a;
    color: #7f9cc2;
    border: 1px dashed #7298d336;
}
.privacy-note {
    background: #143444;
    color: #92d4df;
    border: 1px solid #66cde62b;
}
.form-error {
    color: #ff9898;
}
th {
    background: #162c48;
    color: #cbdffa;
}
td {
    color: #adc5e3;
}
td,
th {
    border-color: #7395d52b;
}
dialog {
    background: #10213a;
    border: 1px solid #709bd950;
    color: #e3f0ff;
    box-shadow: 0 30px 90px #00000080;
}
dialog p {
    color: #9eb5d2;
}
dialog::backdrop {
    background: #020917b8;
    backdrop-filter: blur(8px);
}
.close-modal {
    background: #19314f;
    border-color: #7298d338;
    color: #b7cde8;
}
footer {
    color: #607fa8;
    font-size: 12px;
    padding: 18px 0 30px;
}
a:focus-visible,
button:focus-visible {
    outline: 3px solid #70dfff;
    outline-offset: 4px;
}
#one-stop {
    scroll-margin-top: 125px;
}
@media (max-width: 1150px) {
    .home-hero {
        padding: 36px;
        gap: 32px;
    }
    .home-hero h1 {
        font-size: 37px;
    }
}
@media (max-width: 600px) {
    main {
        padding: 0 16px;
        margin-top: 24px;
    }
    .header-inner {
        padding: 12px 18px;
    }
    .brand strong {
        font-size: 19px;
    }
    .brand small {
        font-size: 10px;
        letter-spacing: 1.8px;
    }
    nav {
        background: #091325;
        border-bottom: 1px solid #7297f024;
        top: 76px;
    }
    nav a {
        font-size: 13px;
    }
    .panel {
        padding: 22px 18px;
        border-radius: 12px;
    }
    .home-hero {
        display: grid;
        grid-template-columns: 1fr;
        padding: 28px 22px;
        gap: 26px;
    }
    .home-hero h1 {
        font-size: 31px;
    }
    .home-hero p {
        font-size: 15px;
    }
    .hero-brand {
        padding: 24px;
    }
    .hero-brand img {
        width: 140px;
        height: 140px;
    }
    .intro h1 {
        font-size: 29px;
    }
    .intro p {
        font-size: 15px;
    }
    .highlights {
        gap: 10px;
    }
    .highlight-item {
        padding: 20px 15px;
    }
    .highlight-item strong {
        font-size: 17px;
    }
    .highlight-item p {
        font-size: 13px;
    }
    .product,
    .feature {
        padding: 25px 22px;
    }
    .product h3,
    .feature h3 {
        font-size: 20px;
    }
    .section-title {
        font-size: 24px;
    }
    .section-copy {
        font-size: 14px;
    }
    .cta-strip {
        padding: 25px 22px;
    }
    .network-summary {
        padding: 24px;
    }
    .ip-card {
        padding: 18px;
    }
    .benefits {
        padding: 20px 16px;
    }
    .vcf-layout input,
    .vcf-layout textarea {
        font-size: 16px;
    }
}
@media (prefers-reduced-motion: reduce) {
    * {
        scroll-behavior: auto !important;
        transition: none !important;
    }
}

/* Auth Component & Form Styles */
.auth-container {
    min-height: calc(100vh - 240px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
}

.auth-card {
    background: linear-gradient(145deg, #152440c4, #101b30e8);
    border: 1px solid #7395d52b;
    border-radius: 20px;
    padding: 40px;
    width: 100%;
    max-width: 440px;
    box-shadow: var(--shadow);
    position: relative;
    backdrop-filter: blur(16px);
}

.auth-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 40px;
    right: 40px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--purple), var(--blue), transparent);
}

.auth-header {
    text-align: center;
    margin-bottom: 32px;
}

.auth-title {
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: 8px;
    color: #edf3ff;
}

.auth-subtitle {
    color: var(--muted);
    font-size: 0.95rem;
}

.auth-status {
    padding: 12px 16px;
    border-radius: 8px;
    background-color: rgba(79, 226, 250, 0.1);
    border: 1px solid var(--purple);
    color: var(--purple);
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 8px;
    color: #c7d9f1;
}

.form-label-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.form-label-row .form-label {
    margin-bottom: 0;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    background-color: #081427;
    border: 1px solid #7298d338;
    border-radius: 8px;
    color: #e7efff;
    font-size: 0.95rem;
    font-family: inherit;
    transition: all 0.2s ease;
}

.form-input:focus {
    outline: none;
    border-color: #5fbde8;
    box-shadow: 0 0 0 3px rgba(79, 226, 250, 0.15);
}

.form-input::placeholder {
    color: #6881a4;
}

.form-checkbox-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 0;
    font-size: 0.88rem;
    color: #c7d9f1;
    cursor: pointer;
    user-select: none;
}

.form-checkbox {
    width: 16px;
    height: 16px;
    accent-color: var(--purple);
    cursor: pointer;
}

.form-error {
    color: #ff9898;
    font-size: 0.85rem;
    margin-top: 6px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

.btn-primary {
    background: linear-gradient(110deg, #3d64eb, #248ebc);
    color: white;
    border: 1px solid #84a5ff40;
    box-shadow: 0 7px 20px rgba(52, 93, 232, 0.25);
    font-weight: 700;
}

.btn-primary:hover {
    transform: translateY(-2px);
    filter: brightness(1.12);
    box-shadow: 0 9px 25px rgba(61, 100, 235, 0.35);
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1.05rem;
}

.btn-full {
    width: 100%;
}

.auth-footer {
    text-align: center;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--line);
    font-size: 0.9rem;
    color: var(--muted);
}

.auth-link {
    color: var(--purple);
    font-weight: 600;
    transition: color 0.2s ease, text-shadow 0.2s ease;
}

.auth-link:hover {
    color: #8ceeff;
    text-shadow: 0 0 8px rgba(79, 226, 250, 0.4);
}

.auth-forgot {
    font-size: 0.85rem;
}