@charset "utf-8";

/* 页面独立样式：dev-eshop-system.html。
   公共样式见 global.css；本文件在 global.css 后加载，保留原章节编号。 */




/* ==========================================================================
   5.0 B2B电商系统开发 - 页面基础与通用排版
   ========================================================================== */

body.b2b-page {
    --b2b-navy: #102746;
    --b2b-blue: #176bdb;
    --b2b-text: #263d56;
    --b2b-muted: #687c92;
    --b2b-line: #e0e8f2;
    --b2b-soft: #f4f8fd;
    margin: 0;
    background: #fff;
    color: var(--b2b-text);
    font-family: system-ui, -apple-system, BlinkMacSystemFont,
        "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    font-size: 15px;
    line-height: 1.8;
}

.b2b-page main h1,
.b2b-page main h2,
.b2b-page main h3,
.b2b-page main p,
.b2b-page main ul,
.b2b-page main ol,
.b2b-page main dl,
.b2b-page main dt,
.b2b-page main dd {
    margin: 0;
    padding: 0;
}

.b2b-page main a {
    color: inherit;
    text-decoration: none;
}

.b2b-page main button {
    font-family: inherit;
    cursor: pointer;
}

.b2b-page main img {
    display: block;
    max-width: 100%;
    height: auto;
}

.b2b-page a:focus-visible,
.b2b-page button:focus-visible,
.b2b-page summary:focus-visible {
    outline: 3px solid #75aaf3;
    outline-offset: 4px;
}

.b2b-page main section[id] {
    scroll-margin-top: 116px;
}

.b2b-section {
    padding: 58px 0;
}

.b2b-section h2 {
    color: var(--b2b-navy);
    font-size: 28px;
    font-weight: 600;
    line-height: 1.4;
    letter-spacing: -.3px;
}

body.b2b-page {
    margin: 0;
    background: #fff;
    color: #334155;
    font-family: system-ui, -apple-system, BlinkMacSystemFont,
        "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    font-size: 15px;
    line-height: 1.8;
}

.b2b-page *,
.b2b-page *::before,
.b2b-page *::after {
    box-sizing: border-box;
}

#b2b-main h1,
#b2b-main h2,
#b2b-main h3,
#b2b-main h4,
#b2b-main p,
#b2b-main ul,
#b2b-main ol,
#b2b-main dl,
#b2b-main dt,
#b2b-main dd,
#b2b-main figure {
    margin: 0;
    padding: 0;
}

#b2b-main a {
    color: inherit;
    text-decoration: none;
}

#b2b-main button {
    font-family: inherit;
    cursor: pointer;
}

#b2b-main img {
    display: block;
    max-width: 100%;
    height: auto;
}

.b2b-page a:focus-visible,
.b2b-page button:focus-visible,
.b2b-page summary:focus-visible {
    outline: 3px solid #176bdb;
    outline-offset: 5px;
}

#b2b-main section[id] {
    scroll-margin-top: 116px;
}

.bc-wrap,
.b2b-wrap {
    width: calc(100% - 48px);
    max-width: 1160px;
    margin: 0 auto;
}

.bc-skip:focus {
    top: 12px;
}

.bc-section {
    padding: 43px 0;
}

#b2b-main h2 {
    color: #032d60;
    font-size: 28px;
    font-weight: 700;
    line-height: 1.5;
    letter-spacing: -.4px;
}

#b2b-main .bc-heading-center > p {
    max-width: 740px;
    margin: 14px auto 0;
    color: #475569;
    font-size: 16px;
    line-height: 1.9;
}

#b2b-main .bc-button,
#b2b-main .b2b-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    min-height: 44px;
    padding: 11px 22px;
    border: 1px solid transparent;
    border-radius: 24px;
    font-family: inherit;
    font-size: 14px;
    font-weight: 600;
    line-height: 1.6;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
}

#b2b-main .bc-button-primary,
#b2b-main .b2b-btn-primary {
    border-color: #0869d8;
    background: #0869d8;
    color: #fff;
    box-shadow: 0 3px 8px #0869d820;
}

#b2b-main .bc-button-primary:hover,
#b2b-main .b2b-btn-primary:hover {
    border-color: #0451ad;
    background: #0451ad;
    color: #fff;
}

#b2b-main .bc-button-primary > span {
    color: inherit;
}

#b2b-main .bc-button-outline {
    border-color: #0758b5;
    background: #fff;
    color: #0758b5;
}

#b2b-main .bc-button-outline:hover {
    border-color: #032d60;
    background: #edf5ff;
    color: #032d60;
}

#b2b-main .bc-text-link {
    display: inline-flex;
    align-items: center;
    gap: 11px;
    padding: 4px 0;
    color: #0758b5;
    font-size: 13px;
    font-weight: 600;
    line-height: 1.8;
    text-decoration: underline;
    text-underline-offset: 4px;
}

#b2b-main .bc-text-link:hover {
    color: #032d60;
}

#b2b-main .bc-check-list {
    display: grid;
    gap: 9px;
    list-style: none;
}

.bc-demo-main {
    flex: 1;
    min-width: 0;
    padding: 13px;
    background: #fbfdff;
}

#b2b-main .bc-rules-art-head h3 {
    margin: 8px 0 21px;
    color: #174a74;
    font-size: 18px;
    font-weight: 600;
    line-height: 1.6;
}

#b2b-main .bc-rule-row p {
    margin-top: 4px;
    color: #475569;
    font-size: 15px;
}

#b2b-main .bc-group-heading h3 {
    color: #073b5a;
    font-size: 21px;
    font-weight: 700;
    line-height: 1.6;
}

#b2b-main .bc-module-cards h4 {
    margin-bottom: 12px;
    color: #073b5a;
    font-size: 18px;
    font-weight: 700;
    line-height: 1.5;
}

#b2b-main .bc-module-cards p {
    margin-bottom: 18px;
    color: #334155;
    font-size: 14px;
    line-height: 1.85;
}

#b2b-main .bc-price {
    margin-bottom: 7px;
    color: #0758b5;
    font-size: 32px;
    font-weight: 700;
    line-height: 1.4;
}

#b2b-main .bc-period {
    margin-bottom: 23px;
    color: #475569;
    font-size: 12px;
}

.b2b-section {
    padding: 48px 0;
}



/* ==========================================================================
   5.1 B2B电商系统开发 - Hero首屏与面包屑
   ========================================================================== */

.b2b-page main .b2b-eyebrow {
    margin-bottom: 11px;
    color: #3d7bc9;
    font-size: 11px;
    font-weight: 600;
    line-height: 1.6;
    letter-spacing: 1.4px;
}

.b2b-page main .b2b-faq-intro > p:not(.b2b-eyebrow) {
    max-width: 280px;
    margin-top: 17px;
    color: #8a9cb0;
    font-size: 14px;
    line-height: 1.9;
}

#b2b-main .bc-eyebrow,
#b2b-main .b2b-eyebrow {
    margin-bottom: 12px;
    color: #1263ad;
    font-size: 11px;
    font-weight: 700;
    line-height: 1.6;
    letter-spacing: 1.2px;
}

.bc-hero {
    overflow: hidden;
    padding: 118px 0 43px;
    background-color: #f7faff;
    background-image: radial-gradient(circle at 0% 0%, #dbeafe 0%, transparent 40%), radial-gradient(circle at 90% 50%, #e0f2fe 0%, transparent 45%);
    border-bottom: 1px solid rgba(8, 105, 216, 0.08);
    box-shadow: 0 8px 24px -10px rgba(8, 105, 216, 0.12);
}

.bc-breadcrumb {
    margin-bottom: 28px;
}

#b2b-main .bc-breadcrumb ol {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 10px;
    list-style: none;
}

.bc-breadcrumb li {
    display: flex;
    align-items: center;
    color: #52657a;
    font-size: 15px;
    line-height: 1.8;
}

.bc-breadcrumb li + li::before {
    content: "›";
    margin-right: 10px;
    color: #71859d;
}

#b2b-main .bc-breadcrumb a {
    color: #52657a;
    font-size: inherit;
}

.bc-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, .97fr) minmax(0, 1.03fr);
    align-items: center;
    gap: 55px;
}

.bc-hero-copy {
    min-width: 0;
}

#b2b-main .bc-hero h1 {
    margin-bottom: 20px;
    color: #032d60;
    font-size: 34px;
    font-weight: 700;
    line-height: 1.45;
    letter-spacing: -.5px;
}

#b2b-main .bc-hero-desc {
    max-width: 495px;
    margin-bottom: 25px;
    color: #334155;
    font-size: 16px;
    line-height: 1.9;
}

#b2b-main .bc-hero-note {
    margin-top: 19px;
    color: #475569;
    font-size: 15px;
    line-height: 1.9;
}

.bc-hero-figure {
    min-width: 0;
}

.bc-hero-art {
    position: relative;
    isolation: isolate;
    min-height: 355px;
    overflow: hidden;
    padding: 23px 20px 58px;
    border-radius: 15px;
    background: linear-gradient(135deg, #06377c, #087be7 70%, #08a6c9);
}

.bc-hero-art::before {
    content: "";
    position: absolute;
    z-index: -1;
    top: -70px;
    right: -35px;
    width: 250px;
    height: 250px;
    border-radius: 50%;
    background: #ffffff18;
}

.bc-hero-figure figcaption {
    padding-top: 9px;
    color: #52657a;
    font-size: 11px;
    text-align: right;
}

#b2b-main .bc-feature-copy > p:not(.bc-eyebrow) {
    color: #334155;
    font-size: 15px;
    line-height: 1.9;
	text-align: justify;
}

#b2b-main .b2b-faq-intro > p:not(.b2b-eyebrow) {
    max-width: 280px;
    margin-top: 17px;
    color: #475569;
    font-size: 14px;
    line-height: 1.9;
}



/* ==========================================================================
   5.2 B2B电商系统开发 - 客户标识与品牌展示
   ========================================================================== */

.bc-project-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 90px;
    margin-bottom: 15px;
    border-radius: 7px;
    background: #f1f7ff;
}

#b2b-main .bc-project-logo img {
    width: 145px;
    height: 81px;
    object-fit: contain;
    mix-blend-mode: multiply;
}



/* ==========================================================================
   5.3 B2B电商系统开发 - 案例、项目与内容列表
   ========================================================================== */

.bc-projects {
    padding: 22px 0 33px;
    background: #fff;
}

.bc-project-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
}

#b2b-main .bc-project-item {
    display: flex;
    flex-direction: column;
    min-width: 0;
    padding: 22px;
    border: 1px solid #d5e0eb;
    border-radius: 11px;
    background: #fff;
    box-shadow: 0 4px 10px #123a6010;
}

#b2b-main .bc-project-item:hover {
    border-color: #92b6dc;
}

#b2b-main .bc-project-item h3 {
    margin-bottom: 9px;
    color: #073b5a;
    font-size: 19px;
    font-weight: 700;
    line-height: 1.5;
}

.bc-project-item p {
    margin-bottom: 17px;
    color: #334155;
    font-size: 15px;
    line-height: 1.85;
}

.bc-project-link {
    margin-top: auto;
    color: #0758b5;
    font-size: 15px;
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 4px;
}



/* ==========================================================================
   5.4 B2B电商系统开发 - 服务、理念与功能模块
   ========================================================================== */

.bc-feature-panel {
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    align-items: center;
    gap: 37px;
    padding: 35px;
    border: 1px solid #d5e0ec;
    border-radius: 13px;
    background: #fff;
    box-shadow: 0 3px 6px #163f6012,
        0 10px 20px #163f6008;
}

.bc-feature-copy {
    min-width: 0;
}

#b2b-main .bc-feature-copy h2 {
    margin-bottom: 18px;
}

#b2b-main .bc-feature-copy .bc-check-list {
    margin-top: 20px;
}

.bc-feature-copy > .bc-button,
.bc-feature-copy > .bc-text-link {
    margin-top: 22px;
}

.bc-feature-reverse {
    grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
}



/* ==========================================================================
   5.5 B2B电商系统开发 - 业务架构、流程与方案
   ========================================================================== */

.bc-system-art {
    padding: 26px;
    border: 1px solid #bad4f0;
    border-radius: 12px;
    background: linear-gradient(135deg, #deefff, #edf7ff);
}

.bc-system-users,
.bc-system-existing {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 9px;
}

.bc-system-users > span {
    padding: 10px 3px;
    border: 1px solid #bed5ec;
    border-radius: 5px;
    background: #fff;
    color: #245780;
    font-size: 15px;
    text-align: center;
}

.bc-system-line {
    width: 1px;
    height: 20px;
    margin: 0 auto;
    background: #8cb4de;
}

.bc-system-core {
    padding: 16px 10px;
    border: 1px solid #0758b5;
    border-radius: 6px;
    background: #0869d8;
    color: #fff;
    font-size: 17px;
    font-weight: 600;
    text-align: center;
}

.bc-system-core > span {
    display: block;
    margin-top: 5px;
    color: #e8f3ff;
    font-size: 15px;
    font-weight: 400;
}

.bc-system-bridge {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    padding: 13px 0;
    color: #475569;
    font-size: 12px;
}

.bc-system-bridge i {
    color: #0869d8;
    font-size: 21px;
    font-style: normal;
    line-height: 1;
}

.bc-system-existing > div {
    padding: 12px 3px;
    border: 1px solid #bed5ec;
    border-radius: 5px;
    background: #fff;
    text-align: center;
}

.bc-system-existing b {
    display: block;
    color: #245780;
    font-size: 15px;
    font-weight: 600;
}

.bc-system-existing span {
    display: block;
    margin-top: 5px;
    color: #475569;
    font-size: 12px;
}

#b2b-main .bc-system-art > p {
    margin-top: 17px;
    color: #52657a;
    font-size: 10px;
    line-height: 1.85;
    text-align: center;
}

.bc-budget-section {
    padding: 35px 0 42px;
}

.bc-budget {
    display: grid;
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
    overflow: hidden;
    border: 1px solid #cbddef;
    border-radius: 11px;
    background: #fff;
}

.bc-budget-summary {
    padding: 30px;
    border-right: 1px solid #d5e4f3;
    background: #edf5ff;
}

.bc-budget-summary > span {
    display: block;
    margin-bottom: 13px;
    color: #245780;
    font-size: 12px;
    font-weight: 500;
}

.bc-budget-details {
    padding: 29px 32px;
}

#b2b-main .bc-budget-details h3 {
    margin-bottom: 20px;
    color: #174a74;
    font-size: 19px;
    font-weight: 600;
}

.bc-budget-details dl {
    display: grid;
    gap: 16px;
}

.bc-budget-details dl > div {
    display: grid;
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 14px;
}

.bc-budget-details dt {
    color: #245780;
    font-size: 16px;
    font-weight: 600;
}

.bc-budget-details dd {
    color: #475569;
    font-size: 15px;
    line-height: 1.85;
}



/* ==========================================================================
   5.6 B2B电商系统开发 - 常见问题与文章详情
   ========================================================================== */

.b2b-faq-section {
    border-top: 1px solid #edf1f7;
    background: #fbfcfe;
}

.b2b-faq-layout {
    display: grid;
    grid-template-columns: minmax(0, .7fr) minmax(0, 1.3fr);
    align-items: start;
    gap: 75px;
}

.b2b-faq {
    border-bottom: 1px solid #e0e8f2;
}

.b2b-faq:first-child {
    border-top: 1px solid #e0e8f2;
}

.b2b-faq summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 19px 0;
    list-style: none;
    color: #365272;
    font-size: 18px;
    font-weight: 500;
    line-height: 1.6;
    cursor: pointer;
}

.b2b-faq summary::after {
    content: "+";
    flex-shrink: 0;
    color: #8b9eb6;
    font-size: 21px;
    font-weight: 400;
    line-height: 1;
}

.b2b-page main .b2b-faq > p {
    padding: 0 25px 20px 0;
    color: #7589a1;
    font-size: 15px;
    line-height: 1.9;
}

.bc-module-cards article {
    display: flex;
    flex-direction: column;
    min-width: 0;
    padding: 24px;
    border: 1px solid #d4e1ed;
    border-top: 4px solid #009b89;
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 4px 11px #0b345c12;
}

.bc-module-cards article > span {
    margin-top: auto;
    padding-top: 12px;
    border-top: 1px solid #e6edf5;
    color: #475569;
    font-size: 14px;
    line-height: 1.9;
}

.b2b-faq-section {
    border-top: 1px solid #e1ebf5;
    background: #fff;
}

.b2b-faq-layout {
    display: grid;
    grid-template-columns: minmax(0, .7fr) minmax(0, 1.3fr);
    align-items: start;
    gap: 70px;
}

.b2b-faq {
    border-bottom: 1px solid #d7e2ed;
}

.b2b-faq:first-child {
    border-top: 1px solid #d7e2ed;
}

.b2b-faq summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 19px 0;
    list-style: none;
    color: #174a74;
    font-size: 17px;
    font-weight: 600;
    line-height: 1.7;
    cursor: pointer;
}

.b2b-faq summary::-webkit-details-marker {
    display: none;
}

.b2b-faq summary::marker {
    content: "";
}

.b2b-faq summary::after {
    content: "+";
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 23px;
    height: 23px;
    border-radius: 50%;
    background: #e6f1ff;
    color: #0758b5;
    font-size: 18px;
    font-weight: 500;
    line-height: 1;
}

.b2b-faq[open] summary::after {
    content: "−";
}

#b2b-main .b2b-faq > p {
    padding: 0 25px 20px 0;
    color: #334155;
    font-size: 14px;
    line-height: 1.95;
}



/* ==========================================================================
   5.7 B2B电商系统开发 - 项目咨询与行动入口
   ========================================================================== */



/* ==========================================================================
   5.8 B2B电商系统开发 - 专项组件与兼容样式
   ========================================================================== */

.bc-skip {
    position: fixed;
    top: -100px;
    left: 20px;
    z-index: 10000;
    padding: 10px 18px;
    border: 1px solid #b4c9e2;
    border-radius: 5px;
    background: #fff;
    color: #032d60;
}

.bc-heading-center {
    max-width: 850px;
    margin: 0 auto 30px;
    text-align: center;
}

.bc-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 13px;
}

.bc-check-list li {
    position: relative;
    padding-left: 18px;
    color: #334155;
    font-size: 14px;
    line-height: 1.85;
}

.bc-check-list li::before {
    content: "✓";
    position: absolute;
    top: 0;
    left: 0;
    color: #008577;
    font-size: 12px;
    font-weight: 700;
}

.bc-demo {
    overflow: hidden;
    border: 1px solid #c7dcf4;
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 15px 23px #00265338;
}

.bc-demo-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 15px;
    padding: 12px;
    border-bottom: 1px solid #dce7f3;
}

.bc-demo-top b {
    color: #0d4a8b;
    font-size: 11px;
    letter-spacing: .5px;
}

.bc-demo-top > span {
    color: #526b86;
    font-size: 8px;
}

.bc-demo-body {
    display: flex;
    min-height: 225px;
}

.bc-demo-menu {
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex: 0 0 70px;
    padding: 18px 8px;
    background: #eaf3ff;
    color: #37628e;
    font-size: 8px;
}

.bc-demo-menu > span:nth-child(2) {
    color: #0758b5;
    font-weight: 700;
}

.bc-demo-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 11px;
}

.bc-demo-heading b {
    color: #174a74;
    font-size: 11px;
}

.bc-demo-heading > span {
    flex: 1;
    max-width: 140px;
    padding: 4px 7px;
    border: 1px solid #cfdeef;
    border-radius: 4px;
    background: #fff;
    color: #687f98;
    font-size: 7px;
}

.bc-demo-context {
    display: flex;
    gap: 7px;
    margin-bottom: 11px;
}

.bc-demo-context > span {
    padding: 4px 7px;
    border-radius: 4px;
    background: #e3f4f1;
    color: #16675b;
    font-size: 7px;
}

.bc-demo-product {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 9px 0;
    border-top: 1px solid #e0e8f3;
}

.bc-demo-product > i {
    flex: 0 0 25px;
    height: 25px;
    border-radius: 5px;
    background: #bedafa;
}

.bc-demo-product > div {
    flex: 1;
    min-width: 0;
}

.bc-demo-product b {
    display: block;
    color: #355b80;
    font-size: 8px;
    font-weight: 500;
}

.bc-demo-product div > span {
    display: block;
    margin-top: 4px;
    color: #647b93;
    font-size: 6px;
}

.bc-demo-product em {
    padding: 4px 5px;
    border-radius: 3px;
    background: #e9f3ff;
    color: #0869d8;
    font-size: 6px;
    font-style: normal;
    white-space: nowrap;
}

.bc-demo-submit {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-top: 10px;
}

.bc-demo-submit > span {
    color: #607b96;
    font-size: 6px;
}

.bc-demo-submit b {
    padding: 5px 8px;
    border-radius: 4px;
    background: #0869d8;
    color: #fff;
    font-size: 7px;
    font-weight: 500;
}

.bc-sync-chip {
    position: absolute;
    right: 18px;
    bottom: 17px;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 15px;
    border: 1px solid #b8d4f0;
    border-radius: 7px;
    background: #fff;
    box-shadow: 0 8px 15px #00265326;
}

.bc-sync-chip i {
    color: #008577;
    font-size: 24px;
    font-style: normal;
    line-height: 1;
}

.bc-sync-chip b {
    display: block;
    color: #174a74;
    font-size: 12px;
    font-weight: 600;
}

.bc-sync-chip span {
    display: block;
    margin-top: 4px;
    color: #475569;
    font-size: 8px;
}

.bc-rules-art {
    padding: 25px;
    border: 1px solid #bddaf4;
    border-radius: 12px;
    background: linear-gradient(135deg, #deefff, #d9f3ee);
}

.bc-rules-art-head > span {
    color: #29689d;
    font-size: 9px;
    font-weight: 600;
    letter-spacing: .8px;
}

.bc-rule-row {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 13px;
    border: 1px solid #bfd8e9;
    border-radius: 6px;
    background: #fff;
}

.bc-rule-row + .bc-rule-row {
    margin-top: 11px;
}

.bc-rule-row > span {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 50px;
    min-height: 37px;
    border-radius: 5px;
    background: #e4f4ef;
    color: #176654;
    font-size: 12px;
    font-weight: 600;
    text-align: center;
}

.bc-rule-row b {
    color: #245780;
    font-size: 15px;
    font-weight: 600;
}

.bc-capabilities {
    padding: 35px 0 43px;
    background: linear-gradient(180deg, #fff, #edf7ff);
}

.bc-module-group {
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr);
    align-items: start;
    gap: 28px;
}

.bc-module-group + .bc-module-group {
    margin-top: 28px;
}

.bc-group-heading {
    padding-top: 10px;
}

.bc-group-heading > span {
    display: block;
    margin-bottom: 12px;
    color: #1263ad;
    font-size: 9px;
    font-weight: 700;
    letter-spacing: .8px;
}

.bc-module-cards {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: stretch;
    gap: 22px;
}



/* ==========================================================================
   5.9 B2B电商系统开发 - 响应式与交互适配
   ========================================================================== */

@media (max-width: 700px) {
    
    .b2b-page main .b2b-faq-intro > p:not(.b2b-eyebrow) {
        max-width: none;
        margin-top: 12px;
    }
}

@media (max-width: 600px) {
    .b2b-section h2,
    .b2b-page main .b2b-contact h2 {
        font-size: 24px;
        line-height: 1.4;
    }
    
    .b2b-page main .b2b-faq > p {
        padding-right: 15px;
    }
}

@media (max-width: 1200px) {
    #b2b-main .bc-hero h1 {
        font-size: 30px;
    }
    
    .bc-hero-grid {
        gap: 35px;
    }
    
    .bc-module-group {
        grid-template-columns: 190px minmax(0, 1fr);
        gap: 23px;
    }
}

@media (max-width: 991.98px) {
    .bc-hero-grid {
        gap: 25px;
    }
    
    .bc-hero-art {
        padding: 21px 15px 58px;
    }
    
    .bc-demo-menu {
        flex-basis: 58px;
        padding-right: 6px;
        padding-left: 6px;
        font-size: 7px;
    }
    
    .bc-demo-main {
        padding: 11px 9px;
    }
    
    .bc-demo-product > i {
        flex-basis: 19px;
        height: 19px;
    }
    
    .bc-project-grid {
        gap: 19px;
    }
    
    #b2b-main .bc-project-item {
        padding: 20px;
    }
    
    .bc-feature-panel {
        gap: 27px;
        padding: 28px;
    }
    
    .bc-module-group {
        grid-template-columns: 1fr;
        gap: 18px;
    }
    
    .bc-group-heading {
        padding-top: 0;
    }
    
    .bc-group-heading h3 br {
        display: none;
    }
    
    .bc-group-heading > span {
        margin-bottom: 8px;
    }
    
    .bc-system-art {
        padding: 22px;
    }
    
    .b2b-faq-layout {
        gap: 35px;
    }
}

@media (max-width: 700px) {
    .bc-wrap,
    .b2b-wrap {
        width: calc(100% - 32px);
    }
    
    .bc-section {
        padding: 33px 0;
    }
    
    .bc-hero {
        padding: 110px 0 29px;
    }
    
    .bc-breadcrumb {
        margin-bottom: 23px;
    }
    
    .bc-hero-grid {
        grid-template-columns: 1fr;
        gap: 27px;
    }
    
    #b2b-main .bc-hero-desc {
        max-width: none;
    }
    
    .bc-hero-figure {
        width: 100%;
        max-width: 500px;
        margin: 0 auto;
    }
    
    .bc-hero-art {
        padding: 22px 18px 58px;
    }
    
    .bc-demo-menu {
        flex-basis: 68px;
        padding-right: 8px;
        padding-left: 8px;
        font-size: 8px;
    }
    
    .bc-projects {
        padding: 15px 0 27px;
    }
    
    .bc-project-grid {
        grid-template-columns: 1fr;
        gap: 18px;
    }
    
    #b2b-main .bc-project-item {
        padding: 23px;
    }
    
    .bc-project-logo {
        min-height: 100px;
    }
    
    .bc-feature-panel,
    .bc-feature-reverse {
        grid-template-columns: 1fr;
        gap: 26px;
        padding: 24px;
    }
    
    .bc-feature-copy h2 br {
        display: none;
    }
    
    .bc-feature-reverse .bc-feature-copy {
        grid-row: 1;
    }
    
    .bc-feature-reverse .bc-system-art {
        grid-row: 2;
    }
    
    .bc-capabilities {
        padding: 29px 0 34px;
    }
    
    .bc-module-cards {
        grid-template-columns: 1fr;
        gap: 17px;
    }
    
    .bc-module-cards article {
        padding: 23px;
    }
    
    .bc-budget-section {
        padding: 29px 0 33px;
    }
    
    .bc-budget {
        grid-template-columns: 1fr;
    }
    
    .bc-budget-summary {
        padding: 25px;
        border-right: 0;
        border-bottom: 1px solid #d5e4f3;
    }
    
    .bc-budget-details {
        padding: 25px;
    }
    
    .b2b-section {
        padding: 37px 0;
    }
    
    .b2b-faq-layout {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .b2b-faq-intro h2 br {
        display: none;
    }
    
    #b2b-main .b2b-faq-intro > p:not(.b2b-eyebrow) {
        max-width: none;
        margin-top: 12px;
    }
}

@media (max-width: 600px) {
    #b2b-main h2 {
        font-size: 24px;
    }
    
    #b2b-main .bc-hero h1 {
        font-size: 28px;
    }
    
    #b2b-main .bc-hero-desc {
        font-size: 15px;
    }
    
    .bc-heading-center {
        margin-bottom: 25px;
    }
    
    #b2b-main .bc-heading-center > p {
        font-size: 14px;
    }
    
    #b2b-main .bc-group-heading h3 {
        font-size: 20px;
    }
    
    #b2b-main .bc-price {
        font-size: 28px;
    }
    
    .b2b-faq summary {
        padding: 17px 0;
        font-size: 16px;
    }
    
    #b2b-main .b2b-faq > p {
        padding-right: 15px;
    }
}

@media (max-width: 380px) {
    #b2b-main .bc-hero h1 {
        font-size: 26px;
    }
    
    .bc-demo-top {
        padding: 10px;
    }
    
    .bc-demo-top b {
        font-size: 10px;
    }
    
    .bc-demo-top > span {
        font-size: 7px;
    }
    
    .bc-demo-menu {
        flex-basis: 52px;
        padding-right: 5px;
        padding-left: 5px;
        font-size: 7px;
    }
    
    .bc-demo-main {
        padding-right: 8px;
        padding-left: 8px;
    }
    
    .bc-demo-product > i {
        display: none;
    }
    
    .bc-feature-panel {
        padding: 21px;
    }
    
    .bc-rules-art,
    .bc-system-art {
        padding: 20px;
    }
    
    .bc-budget-details dl > div {
        grid-template-columns: 62px minmax(0, 1fr);
        gap: 10px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .b2b-page *,
    .b2b-page *::before,
    .b2b-page *::after {
        animation: none !important;
        transition: none !important;
        scroll-behavior: auto !important;
    }
}