/* ===== 色彩与尺寸变量 ===== */
:root {
    --platform-primary-color: #80AACD;
    --platform-soft-color: #E8F7FF;
    --max-content-width: 1152px;
    /* 等价于 Tailwind 的 max-w-6xl */
    --header-height: 60px;
}

/* ===== 基础重置 ===== */
* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    height: 100%;
}

body {
    /* 主流手机竖屏视口宽度下限：低于此宽度不再缩小，由浏览器横向滚动 */
    min-width: 375px;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
    color: #000;
    line-height: 1.5;
}

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

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

/* ===== 整体背景容器：带蓝色头部的背景 ===== */
.page-bg {
    min-height: 100vh;
    width: 100%;
    display: flex;
    justify-content: center;
    margin: 0;
    padding: 0;
    background-image: url("../siteimgs/head-bg.png");
    background-repeat: no-repeat;
    background-position: top;
    background-size: 100% 520px;
    border-top: 1px solid var(--platform-primary-color);
    border-bottom: 1px solid var(--platform-primary-color);
}

/* ===== 限制宽度的内容框 ===== */
.content-frame {
    max-width: var(--max-content-width);
    width: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 8px 16px;
}

/* ===== 导航栏 ===== */
.site-header {
    /* 建立层叠上下文，保证移动端下拉菜单盖过 hero（hero track 的 transform 会形成层叠上下文） */
    position: relative;
    z-index: 20;
    display: flex;
    flex-direction: row;
    align-items: center;
    width: 100%;
    height: var(--header-height);
    padding: 0 16px;
}

.site-header__logo {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    color: #fff;
}

.site-header__logo img {
    width: 160px;
    height: 40px;
}

/* ===== 导航链接 ===== */
.site-nav {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    margin-left: auto;
}

/* 桌面端：横向胶囊，隐藏汉堡按钮 */
.site-nav__toggle {
    display: none;
}

.site-nav__links {
    display: flex;
    align-items: center;
    gap: 0;
    border: 1px solid #fff;
    border-radius: 6px;
    overflow: hidden;
    background-color: var(--platform-soft-color);
}

.site-nav__link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 28px;
    padding: 0 18px;
    color: #fff;
    font-size: 14px;
    line-height: 1;
    background-color: var(--platform-primary-color);
    transition: background-color 0.2s ease, color 0.2s ease;
}

.site-nav__link:hover {
    background-color: #6a93b8;
    color: #fff;
}

/* 当前页/激活态：每个菜单项均为当前色，模板通用 */
.site-nav__link.is-active {
    background-color: var(--platform-primary-color);
    color: #fff;
    font-weight: 600;
}

.site-nav__divider {
    width: 1px;
    height: 18px;
    background-color: #fff;
    opacity: 0.5;
}

/* ===== 主内容区（占位） ===== */
.site-main {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    width: 100%;
    flex: 1;
    padding: 16px 0;
}

/* ===== Hero 幻灯片 ===== */
.hero-slider {
    position: relative;
    width: 100%;
    overflow: hidden;
}

.hero-slider__track {
    display: flex;
    transition: transform 0.5s ease;
}

.hero-slider__slide {
    flex: 0 0 100%;
    min-width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 14px;
    padding: 40px 0 8px 0;
}

/* 切换导轨（指示点）：刻意做小做淡，仅吸引有探索欲的用户 */
.hero-slider__dots {
    display: flex;
    justify-content: center;
    gap: 6px;
    padding: 6px 0 4px 0;
}

.hero-slider__dot {
    width: 6px;
    height: 6px;
    padding: 0;
    border: none;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.hero-slider__dot:hover {
    background-color: rgba(255, 255, 255, 0.7);
}

.hero-slider__dot.is-active {
    background-color: rgba(255, 255, 255, 0.75);
    transform: scale(1.2);
}

/* ===== Hero 第1页：主标题 / 副标题 / 核心差异点 ===== */
.hero__title {
    margin: 0 0 10px 0;
    font-size: 30px;
    font-weight: 700;
    line-height: 1.3;
    color: #fff;
    text-shadow: 0 2px 10px rgba(30, 60, 90, .25);
}

/* 副标题 */
.hero__subtitle {
    margin: 0 0 18px 0;
    font-size: 15.5px;
    line-height: 1.8;
    color: rgba(255, 255, 255, .92);
    max-width: 760px;
}

/* 3个核心差异点：并排小卡片 */
.hero__diffs {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    width: 100%;
    max-width: 1000px;
    box-sizing: border-box;
}

.hero__diff {
    background-color: rgba(255, 255, 255, 0.13);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 10px;
    padding: 16px 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color .2s ease, transform .15s ease;
}

.hero__diff:hover {
    background-color: rgba(255, 255, 255, 0.22);
    transform: translateY(-2px);
}

.hero__diff-text {
    margin: 0;
    font-size: 14px;
    line-height: 1.7;
    color: #fff;
}

/* 手机宽度：差异点卡片改为一列，压缩hero间距，并同步加高蓝色背景避免第三张卡片溢出蓝底 */
@media (max-width: 640px) {
    .page-bg {
        background-size: 100% 640px;
    }

    .hero-slider__slide {
        padding-top: 24px;
        gap: 10px;
    }

    .hero__diffs {
        grid-template-columns: 1fr;
        max-width: 480px;
        gap: 10px;
    }

    .hero__title {
        font-size: 22px;
        margin-bottom: 6px;
    }

    .hero__subtitle {
        font-size: 14px;
        margin-bottom: 12px;
    }

    .hero__diff {
        padding: 12px;
    }

    .hero__diff-text {
        font-size: 13px;
    }
}

/* ===== Hero 第2页：业界新闻 ===== */
.hero-news {
    text-align: left;
}

.hero-news__title {
    margin: 0 0 8px 0;
    font-size: 36px;
    font-weight: 700;
    color: #fff;
    text-align: center;
}

.hero-news__list {
    list-style: none;
    margin: 0 auto;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
    max-width: 720px;
}

.hero-news__item a {
    display: flex;
    align-items: baseline;
    gap: 12px;
    padding: 10px 14px;
    border-radius: 6px;
    background-color: rgba(255, 255, 255, 0.15);
    color: #fff;
    font-size: 15px;
    transition: background-color 0.2s ease;
}

.hero-news__item a:hover {
    background-color: rgba(255, 255, 255, 0.28);
}

.hero-news__date {
    flex: 0 0 auto;
    color: var(--platform-soft-color);
    font-size: 13px;
    white-space: nowrap;
}

.hero-news__text {
    flex: 1 1 auto;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}




/* ===== 谁适合使用 xwPlatform ===== */
.audience {
    width: 100%;
    /* 负 margin 上移卡片，使卡片垂直中央压在蓝色背景(520px)下沿 */
    margin-top: 38px;
    padding: 0 0 16px 0;
}

.audience__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.audience__card {
    display: flex;
    align-items: stretch;
    border: 1px solid var(--platform-primary-color);
    border-radius: 6px;
    overflow: hidden;
    background-color: var(--platform-soft-color);
}

/* 文字区：从微白渐变到透明，与图片区浅蓝底自然过渡 */
.audience__text {
    flex: 1 1 auto;
    padding: 12px;
    background: linear-gradient(to right, rgba(255, 255, 255, 0.45), transparent);
}

.audience__name {
    margin: 0 0 6px 0;
    font-size: 15px;
    font-weight: 700;
    color: #000;
}

.audience__desc {
    margin: 0;
    font-size: 13px;
    color: #333;
    line-height: 1.5;
}

.audience__media {
    flex: 0 0 56px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.audience__media svg {
    width: 40px;
    height: 40px;
    color: var(--platform-primary-color);
}

/* 响应式：中等宽度过渡为 2x2，手机宽度切换为四行一列 */
@media (max-width: 991px) {
    .audience__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 599px) {
    .audience__grid {
        grid-template-columns: 1fr;
    }
}

/* ===== 响应式：平板及以下收缩为汉堡菜单 ===== */
@media (max-width: 767px) {
    /* 汉堡按钮 */
    .site-nav__toggle {
        display: inline-flex;
        flex-direction: column;
        justify-content: center;
        gap: 5px;
        width: 36px;
        height: 32px;
        padding: 7px 7px;
        background-color: var(--platform-soft-color);
        border: 1px solid #fff;
        border-radius: 6px;
        cursor: pointer;
    }

    .site-nav__toggle-bar {
        display: block;
        height: 2px;
        width: 100%;
        background-color: var(--platform-primary-color);
        border-radius: 1px;
        transition: transform 0.25s ease, opacity 0.25s ease;
    }

    /* 打开时变为 X */
    .site-nav.is-open .site-nav__toggle-bar:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .site-nav.is-open .site-nav__toggle-bar:nth-child(2) {
        opacity: 0;
    }

    .site-nav.is-open .site-nav__toggle-bar:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    /* 链接变为下拉菜单：白底深字，对比清晰 */
    .site-nav__links {
        display: none;
        position: absolute;
        top: calc(100% + 6px);
        right: 0;
        flex-direction: column;
        align-items: stretch;
        min-width: 150px;
        border: 1px solid var(--platform-primary-color);
        border-radius: 8px;
        overflow: hidden;
        background-color: #fff;
        box-shadow: 0 6px 16px rgba(30, 60, 90, 0.18);
    }

    .site-nav.is-open .site-nav__links {
        display: flex;
    }

    .site-nav__link {
        width: 100%;
        height: 42px;
        justify-content: flex-start;
        padding: 0 18px;
        font-size: 15px;
        color: #2c4a66;
        background-color: transparent;
    }

    .site-nav__link:hover {
        color: #fff;
        background-color: var(--platform-primary-color);
    }

    .site-nav__divider {
        width: 100%;
        height: 1px;
        background-color: #d8e4ef;
        opacity: 1;
    }
}

/* 小屏手机：logo 略缩，避免与汉堡按钮拥挤 */
@media (max-width: 480px) {
    .site-header__logo img {
        width: 130px;
        height: 32px;
    }
}

/* ===== 只需4步，创建自己的ERP ===== */
.steps {
    width: 100%;
    padding: 24px 0 8px 0;
}

.steps__title {
    margin: 0 0 20px 0;
    font-size: 26px;
    font-weight: 700;
    color: #2c4a66;
    text-align: center;
}

.steps__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.steps__card {
    display: flex;
    flex-direction: column;
    background: #fff;
    border: 1px solid #d8e4ef;
    border-radius: 12px;
    padding: 16px;
    box-shadow: 0 2px 8px rgba(44, 74, 102, 0.06);
}

.steps__head {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.steps__num {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--platform-primary-color);
    color: #fff;
    font-size: 15px;
    font-weight: 700;
}

.steps__name {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    color: #2c4a66;
}

.steps__img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 8px;
    border: 1px solid #e2ebf3;
}

/* 响应式：手机宽度切换为一行四列 */
@media (max-width: 667px) {
    .steps__grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 10px;
    }

    .steps__card {
        padding: 8px;
        border-radius: 8px;
    }

    .steps__head {
        flex-direction: column;
        gap: 6px;
        margin-bottom: 8px;
        text-align: center;
    }

    .steps__num {
        width: 24px;
        height: 24px;
        font-size: 13px;
    }

    .steps__name {
        font-size: 13px;
        line-height: 1.3;
    }

    .steps__img {
        border-radius: 6px;
    }
}

/* ===== 图片放大弹层 ===== */
.steps__img {
    cursor: zoom-in;
}

.lightbox {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.lightbox[hidden] {
    display: none;
}

.lightbox__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 30, 45, 0.82);
}

.lightbox__img {
    position: relative;
    max-width: 92vw;
    max-height: 88vh;
    border-radius: 8px;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.45);
    cursor: zoom-out;
}

.lightbox__close {
    position: absolute;
    top: 16px;
    right: 20px;
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.16);
    color: #fff;
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
    transition: background 0.2s ease;
}

.lightbox__close:hover {
    background: rgba(255, 255, 255, 0.32);
}

/* ===== 他们谈 xwPlatform ===== */
.voices {
    width: 100%;
    padding: 40px 0 8px 0;
}

.voices__title {
    margin: 0 0 20px 0;
    font-size: 26px;
    font-weight: 700;
    color: #2c4a66;
    text-align: center;
}

.voices__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.voices__card {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    background: #fff;
    border: 1px solid #d8e4ef;
    border-radius: 12px;
    padding: 14px;
    box-shadow: 0 2px 8px rgba(44, 74, 102, 0.06);
    cursor: pointer;
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.voices__card:hover {
    box-shadow: 0 4px 16px rgba(44, 74, 102, 0.14);
    transform: translateY(-2px);
}

.voices__avatar {
    flex: 0 0 auto;
    width: 44px;
    height: 44px;
    border-radius: 50%;
}

.voices__body {
    min-width: 0;
}

.voices__name {
    margin: 0 0 6px 0;
    font-size: 14px;
    font-weight: 600;
    color: #2c4a66;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.voices__text {
    margin: 0;
    font-size: 13px;
    line-height: 1.6;
    color: #5a6b7a;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 响应式：中等宽度 2x2，手机宽度四行一列 */
@media (max-width: 991px) {
    .voices__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .voices__grid {
        grid-template-columns: 1fr;
    }
}

/* ===== 谈话内容弹层 ===== */
.voice-modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.voice-modal[hidden] {
    display: none;
}

.voice-modal__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 30, 45, 0.55);
}

.voice-modal__panel {
    position: relative;
    width: min(520px, 92vw);
    max-height: 80vh;
    overflow-y: auto;
    background: #fff;
    border-radius: 12px;
    padding: 22px 24px;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.28);
}

.voice-modal__head {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.voice-modal__avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

.voice-modal__name {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    color: #2c4a66;
}

.voice-modal__text {
    margin: 0;
    font-size: 14px;
    line-height: 1.8;
    color: #41546a;
    text-align: justify;
}

/* ===== xwPlatform 优势 ===== */
.compare {
    width: 100%;
    padding: 40px 0 8px 0;
}

.compare__title {
    margin: 0 0 20px 0;
    font-size: 26px;
    font-weight: 700;
    color: #2c4a66;
    text-align: center;
}

.compare__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    align-items: stretch;
}

.compare__card {
    display: flex;
    flex-direction: column;
    background: #fff;
    border: 1px solid #d8e4ef;
    border-radius: 12px;
    padding: 18px 16px;
    box-shadow: 0 2px 8px rgba(44, 74, 102, 0.06);
}

/* xwPlatform 主卡：主色描边突出 */
.compare__card--highlight {
    border: 2px solid var(--platform-primary-color);
    box-shadow: 0 4px 16px rgba(128, 170, 205, 0.28);
}

.compare__logo {
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
}

.compare__logo img {
    max-width: 140px;
    max-height: 40px;
    object-fit: contain;
}

/* xwPlatform logo 为白色前景，加品牌色渐变底衬托 */
.compare__card--highlight .compare__logo img {
    background: linear-gradient(135deg, #80aacd, #5d8cb8);
    padding: 8px 16px;
    border-radius: 8px;
}

.compare__desc {
    margin: 0 0 12px 0;
    font-size: 13px;
    line-height: 1.7;
    color: #5a6b7a;
}

.compare__features {
    margin: 0;
    padding: 0;
    list-style: none;
    font-size: 13px;
    line-height: 1.6;
    color: #41546a;
}

.compare__features li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 6px;
}

.compare__features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 6px;
    width: 12px;
    height: 12px;
    background: url('../siteimgs/checkmark.svg') center/contain no-repeat;
}

/* apibuilder 截图：宽度撑满卡片，点击可放大（复用 lightbox） */
.compare__shot {
    display: block;
    width: 100%;
    height: auto;
    margin-top: auto;
    border: 1px solid #e2ebf3;
    border-radius: 8px;
    cursor: zoom-in;
}

/* 响应式：平板两列（第二张独占一行居中由 grid 处理为1+2），手机一列 */
@media (max-width: 991px) {
    .compare__grid {
        /* 三卡变两行：第二行独卡跨两列，与第一行总宽对齐 */
        grid-template-columns: repeat(2, 1fr);
    }

    .compare__card:last-child {
        grid-column: 1 / -1;
        max-width: none;
    }
}

@media (max-width: 600px) {
    .compare__grid {
        grid-template-columns: 1fr;
    }
}

/* ===== 用户计划：tag 列表 ===== */
.customers {
    width: 100%;
    padding: 32px 0 8px 0;
}

/* 虚线框容器，参考 tagcontainer 风格 */
.customers__container {
    padding: 16px 18px;
    border: 1px dashed #c5d4e3;
    border-radius: 8px;
    background: #fafbfc;
}

.customers__title {
    margin: 0 0 20px 0;
    font-size: 26px;
    font-weight: 700;
    color: #2c4a66;
    text-align: center;
}

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

/* tag：白底细边框小圆角，hover 主色描边 */
.customers__tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    border: 1px solid #d0dae5;
    border-radius: 5px;
    font-size: 15px;
    color: #555;
    background: #fff;
    white-space: nowrap;
    transition: border-color .15s, color .15s;
}

.customers__tag:hover {
    border-color: var(--platform-primary-color);
    color: var(--platform-primary-color);
}

/* 离线说明：低调的灰色小字 */
.customers__note {
    margin: 14px 0 0;
    text-align: center;
    font-size: 13px;
    color: #9aa7b4;
}

/* 加入用户计划：虚线边框的行动按钮样式 */
.customers__tag--join {
    border-style: dashed;
    border-color: var(--platform-primary-color);
    color: var(--platform-primary-color);
    text-decoration: none;
    font-weight: 500;
}

.customers__tag--join:hover {
    background: var(--platform-primary-color);
    color: #fff;
}

.customers__logo {
    width: 22px;
    height: 22px;
    border-radius: 3px;
    object-fit: contain;
}

/* ===== 页脚 ===== */
.site-footer {
    width: 100%;
    min-width: 375px;
    background: var(--platform-primary-color);
}

.site-footer__inner {
    max-width: var(--max-content-width);
    margin: 0 auto;
    min-height: 80px;
    padding: 8px 16px;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.site-footer__brand img {
    height: 32px;
    display: block;
}

.site-footer__legal {
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-items: flex-end;
    gap: 2px;
    color: #fff;
    text-align: right;
}

.site-footer__copyright {
    font-size: 16px;
    white-space: nowrap;
}

.site-footer__beian {
    font-size: 12px;
}

.site-footer__beian a {
    color: #fff;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.site-footer__beian a:hover {
    text-decoration: underline;
}

.site-footer__beian img {
    width: 16px;
    height: 16px;
}

/* 小屏：logo 与备案信息上下排布 */
@media (max-width: 600px) {
    .site-footer__inner {
        flex-direction: column;
        justify-content: center;
        gap: 10px;
        padding: 14px 16px;
    }

    .site-footer__legal {
        align-items: center;
    }

    .site-footer__copyright {
        font-size: 13px;
    }
}

/* ===== 下载页 ===== */
.download {
    padding: 32px 0 8px;
}

.download__head {
    text-align: center;
    margin-bottom: 24px;
}

.download__title {
    font-size: 28px;
    font-weight: 600;
    color: #fff;
}

.download__subtitle {
    margin-top: 8px;
    font-size: 15px;
    color: rgba(255, 255, 255, .85);
}

.download__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 8px;
}

/* 下载窗格：白底卡片 + 浅蓝边框 + 阴影，位于蓝色背景上有层次 */
.download__panel {
    border: 1px solid var(--platform-primary-color);
    background: #fff;
    padding: 20px 24px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(93, 140, 184, .18);
    display: flex;
    flex-direction: column;
}

.download__panel-head {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* 平台图标：主色圆底白色图形 */
.download__os {
    width: 40px;
    height: 40px;
    flex: 0 0 auto;
}

.download__panel-title {
    font-size: 17px;
    font-weight: 600;
    color: #2c4a66;
}

.download__panel-meta {
    display: block;
    font-size: 12.5px;
    font-weight: 400;
    color: #7a8a99;
    margin-top: 2px;
}

/* 下载按钮：主色底白字，hover 微浮起 */
.download__btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 42px;
    margin-top: 18px;
    background: var(--platform-primary-color);
    color: #fff;
    font-size: 16px;
    border-radius: 8px;
    text-decoration: none;
    box-shadow: 0 2px 8px rgba(128, 170, 205, .35);
    transition: background .2s, transform .15s, box-shadow .15s;
}

.download__btn:hover {
    background: #6a93b8;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(106, 147, 184, .45);
}

.download__btn:active {
    transform: translateY(0);
}

.download__tips {
    list-style: none;
    margin: 18px 0 0;
    padding: 14px 16px;
    background: var(--platform-soft-color);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.download__tips li {
    display: flex;
    align-items: center;
    font-size: 14px;
    color: #4a5b6a;
}

.download__tips svg {
    width: 16px;
    height: 16px;
    margin-right: 8px;
    color: var(--platform-primary-color);
    flex: 0 0 auto;
}

/* ===== 升级记录 ===== */
.changelog {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin: 40px 0 40px;
}

.changelog__title {
    font-size: 26px;
    font-weight: 600;
    color: #2c4a66;
    text-align: center;
    margin-top: -18px;
    margin-bottom: 0px;
}

.changelog__item {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--platform-primary-color);
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(93, 140, 184, .1);
}

.changelog__version {
    font-size: 20px;
    font-weight: 600;
    color: #2c4a66;
    min-height: 52px;
    padding: 0 20px;
    display: flex;
    align-items: center;
    background: linear-gradient(to right, var(--platform-soft-color), #fff 65%);
    border-bottom: 1px solid rgba(128, 170, 205, .35);
}

.changelog__list {
    list-style: none;
    margin: 0;
    padding: 8px 20px 14px;
}

.changelog__list li {
    min-height: 32px;
    display: flex;
    align-items: center;
    line-height: 1.7;
    color: #3d4f5e;
}

/* 最新版本：主色描边加粗突出 */
.changelog__item--latest {
    border: 2px solid var(--platform-primary-color);
    box-shadow: 0 4px 16px rgba(93, 140, 184, .22);
}

.changelog__badge {
    margin-left: 10px;
    padding: 2px 10px;
    background: var(--platform-primary-color);
    color: #fff;
    font-size: 12px;
    font-weight: 500;
    border-radius: 9999px;
    line-height: 1.4;
}

/* 手机宽度：下载窗格改为一列 */
@media (max-width: 640px) {
    .download__grid {
        grid-template-columns: 1fr;
    }

    .download__title {
        font-size: 24px;
    }
}

/* ===== 关于页 ===== */
.about {
    padding: 32px 0 40px;
}

.about__head {
    text-align: center;
    margin-bottom: 24px;
}

.about__title {
    font-size: 28px;
    font-weight: 600;
    color: #fff;
}

.about__subtitle {
    margin-top: 8px;
    font-size: 15px;
    color: rgba(255, 255, 255, .85);
}

/* 内容卡片：白底圆角，阅读区限宽 */
.about__card {
    max-width: 900px;
    margin: 0 auto 24px;
    background: #fff;
    border: 1px solid var(--platform-primary-color);
    border-radius: 10px;
    padding: 28px 32px;
    box-shadow: 0 2px 10px rgba(93, 140, 184, .1);
}

.about__text {
    margin: 0 0 14px;
    font-size: 15px;
    line-height: 1.9;
    color: #3d4f5e;
    text-align: justify;
}

.about__text:last-child {
    margin-bottom: 0;
}

/* 行业困境列表：两条对比性描述 */
.about__painpoints {
    list-style: none;
    margin: 0 0 14px;
    padding: 4px 0 4px 16px;
    border-left: 3px solid var(--platform-primary-color);
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.about__painpoints li {
    font-size: 15px;
    line-height: 1.9;
    color: #3d4f5e;
    text-align: justify;
}

.about__section-title {
    font-size: 26px;
    font-weight: 600;
    color: #2c4a66;
    text-align: center;
    margin: 28px 0 16px;
}

/* 授权条款：编号圆标 + 条款内容 */
.about__license {
    list-style: none;
    margin: 20px 0 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.about__license li {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.about__license-no {
    flex: 0 0 auto;
    width: 24px;
    height: 24px;
    margin-top: 2px;
    background: var(--platform-primary-color);
    color: #fff;
    font-size: 13px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about__license-body {
    font-size: 15px;
    line-height: 1.9;
    color: #3d4f5e;
    text-align: justify;
}

.about__license-body strong {
    color: #2c4a66;
}


@media (max-width: 640px) {
    .about__card {
        padding: 20px 18px;
    }

    .about__title {
        font-size: 24px;
    }
}