/* ============================================================
   编程定制开发站（/dev/）样式
   ------------------------------------------------------------
   与影像站共用黑白杂志语言（衬线标题 / 发丝线 / 大留白），
   但这一侧加入"工程感"：等宽字的编号与英文标签、细网格、深色首屏。
   ★ 与 style.css 完全隔离：影像站的导航、作品墙、灯箱规则都不进来，
     两边可以各自改而不互相牵连。
   ============================================================ */

:root {
    --black: #0a0a0a;
    --ink: #1a1a1a;
    --grey: #8a8a8a;
    --line: #e5e5e5;
    --paper: #f7f7f5;
    --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", Georgia, serif;
    --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", "Courier New", monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body.dev-body {
    font-family: var(--sans);
    font-size: 15px;
    line-height: 1.9;
    color: var(--ink);
    background: #fff;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
a, button, [role="button"] { -webkit-tap-highlight-color: transparent; }

/* ---------------- 顶部导航 ---------------- */
.dev-top {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, .96);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(8px);
}

.dev-top-inner {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 28px;
    height: 68px;
    display: flex;
    align-items: center;
    gap: 28px;
}

.dev-brand { display: flex; flex-direction: column; line-height: 1.25; flex: 0 0 auto; }
.dev-brand-cn { font-family: var(--serif); font-weight: 700; font-size: 17px; letter-spacing: 2px; }
.dev-brand-en { font-family: var(--mono); font-size: 8.5px; letter-spacing: 1.6px; color: #a9a9a9; margin-top: 3px; }

.dev-nav {
    display: flex;
    align-items: center;
    gap: 26px;
    margin-left: auto;
    font-size: 13px;
    letter-spacing: 1.5px;
}
.dev-nav a { color: #666; padding: 6px 0; border-bottom: 1px solid transparent; transition: color .3s ease, border-color .3s ease; }
.dev-nav a.active { color: var(--black); border-bottom-color: var(--black); }


/* ---------------- 通用版心 / 标题 ---------------- */
.dev-wrap { max-width: 1180px; margin: 0 auto; padding: 0 28px; }

.dev-sec { padding: 76px 0; border-bottom: 1px solid var(--line); }
.dev-sec:last-of-type { border-bottom: 0; }

.dev-eyebrow {
    font-family: var(--mono);
    font-size: 10.5px;
    letter-spacing: 2.4px;
    color: #a3a3a3;
    text-transform: uppercase;
}

.dev-h2 {
    font-family: var(--serif);
    font-weight: 700;
    font-size: clamp(22px, 2.4vw, 30px);
    letter-spacing: 3px;
    line-height: 1.5;
    margin-top: 14px;
}

.dev-lead { margin-top: 18px; color: #5f5f5f; max-width: 720px; }
.dev-lead p + p { margin-top: 10px; }

.dev-sec-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; flex-wrap: wrap; margin-bottom: 38px; }
.dev-more { font-family: var(--mono); font-size: 11px; letter-spacing: 1.4px; color: #888; border-bottom: 1px solid #ccc; padding-bottom: 2px; }

/* ---------------- 首页首屏（深色 + 网格） ---------------- */
.dev-hero {
    background-color: var(--black);
    color: #f2f2f2;
    background-image:
        linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
    background-size: 38px 38px, 38px 38px;
    padding: clamp(70px, 12vh, 130px) 0 clamp(60px, 10vh, 110px);
    position: relative;
    overflow: hidden;
}

.dev-hero-inner { max-width: 1180px; margin: 0 auto; padding: 0 28px; position: relative; z-index: 1; }

.dev-hero .dev-eyebrow { color: rgba(255, 255, 255, .42); }

.dev-h1 {
    font-family: var(--serif);
    font-weight: 700;
    font-size: clamp(30px, 4.6vw, 56px);
    line-height: 1.35;
    letter-spacing: 4px;
    margin-top: 20px;
    max-width: 15em;
}

.dev-hero-sub {
    margin-top: 22px;
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 2px;
    color: rgba(255, 255, 255, .55);
}

.dev-hero-intro {
    margin-top: 34px;
    max-width: 620px;
    color: rgba(255, 255, 255, .74);
    line-height: 2.1;
}
.dev-hero-intro p + p { margin-top: 8px; }

.dev-hero-actions { margin-top: 44px; display: flex; gap: 14px; flex-wrap: wrap; }

.dev-btn {
    display: inline-block;
    padding: 13px 34px;
    font-size: 12px;
    letter-spacing: 3px;
    border: 1px solid transparent;
    transition: background-color .35s ease, color .35s ease, border-color .35s ease;
}
.dev-btn--light { background: #fff; color: var(--black); }
.dev-btn--ghost { border-color: rgba(255, 255, 255, .45); color: #fff; }
.dev-btn--dark { background: var(--black); color: #fff; }
.dev-btn--line { border-color: var(--black); color: var(--black); }

/* 首屏访客计数：贴在两个按钮正下方、与按钮左边缘对齐（不是居中）。
   字距放宽、颜色压低，跟深色首屏融为一体，不抢标题。
   ★ 数字单独收紧字距：汉字之间留 4px 很透气，但 1,168 被同样拉开会读成 1、1、6、8。 */
.dev-visitors {
    margin-top: 26px;
    font-size: 11px;
    letter-spacing: 4px;
    color: rgba(255, 255, 255, .5);
}
.dev-visitors span { letter-spacing: 1px; }

/* 首屏右下角的装饰：一段等宽符号，纯装饰、不参与交互 */
.dev-hero::after {
    content: "</>  { }  ;";
    position: absolute;
    right: clamp(14px, 3vw, 48px);
    bottom: clamp(10px, 2vw, 30px);
    font-family: var(--mono);
    font-size: clamp(46px, 7vw, 110px);
    line-height: 1;
    color: rgba(255, 255, 255, .05);
    pointer-events: none;
    white-space: nowrap;
}

/* ---------------- 内页页头（浅色小首屏） ---------------- */
.dev-page-head { padding: clamp(52px, 8vh, 86px) 0 clamp(34px, 5vh, 52px); border-bottom: 1px solid var(--line); }
.dev-page-title {
    font-family: var(--serif);
    font-weight: 700;
    font-size: clamp(26px, 3.4vw, 40px);
    letter-spacing: 4px;
    line-height: 1.4;
    margin-top: 14px;
}
.dev-page-note { margin-top: 16px; color: #666; max-width: 680px; }

/* ---------------- 服务与报价 ---------------- */
.dev-services { display: grid; gap: 0; border-top: 1px solid var(--line); }

.dev-service {
    display: grid;
    grid-template-columns: 56px 1fr 210px;
    gap: 20px;
    align-items: baseline;
    padding: 26px 4px;
    border-bottom: 1px solid var(--line);
}
.dev-service-no { font-family: var(--mono); font-size: 11px; color: #b5b5b5; letter-spacing: 1px; }
.dev-service-name { font-family: var(--serif); font-size: 19px; font-weight: 600; letter-spacing: 1.5px; }
.dev-service-desc { margin-top: 8px; font-size: 13.5px; color: #6b6b6b; line-height: 1.9; }
.dev-service-price { text-align: right; font-family: var(--mono); font-size: 13px; letter-spacing: .5px; color: var(--ink); }

/* ---------------- 案例 ---------------- */
.dev-cases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }

.dev-case { border: 1px solid var(--line); display: flex; flex-direction: column; background: #fff; }
.dev-case-img { aspect-ratio: 4 / 3; background: var(--paper); overflow: hidden; }
.dev-case-img img { width: 100%; height: 100%; object-fit: cover; }
.dev-case-body { padding: 20px 20px 22px; }
.dev-case-client { font-family: var(--mono); font-size: 10px; letter-spacing: 1.6px; color: #a0a0a0; text-transform: uppercase; }
.dev-case-title { font-family: var(--serif); font-size: 17px; font-weight: 600; letter-spacing: 1px; margin-top: 10px; }
.dev-case-sum { margin-top: 10px; font-size: 13px; color: #6d6d6d; line-height: 1.9; }
.dev-case-link { display: inline-block; margin-top: 14px; font-family: var(--mono); font-size: 11px; letter-spacing: 1.2px; border-bottom: 1px solid #bbb; }

/* ---------------- 服务流程 ---------------- */
.dev-steps { counter-reset: step; border-top: 1px solid var(--line); }
.dev-step {
    counter-increment: step;
    display: grid;
    grid-template-columns: 92px 1fr;
    gap: 24px;
    padding: 30px 4px;
    border-bottom: 1px solid var(--line);
    position: relative;
}
.dev-step::before {
    content: counter(step, decimal-leading-zero);
    font-family: var(--mono);
    font-size: 26px;
    color: #d8d8d8;
    line-height: 1;
    letter-spacing: 1px;
}
.dev-step-title { font-family: var(--serif); font-size: 19px; font-weight: 600; letter-spacing: 1.5px; }
.dev-step-desc { margin-top: 10px; font-size: 13.5px; color: #6b6b6b; line-height: 1.95; }

/* ---------------- 售卖软件 ---------------- */
.dev-soft { display: grid; gap: 26px; }

.dev-soft-card {
    border: 1px solid var(--line);
    display: grid;
    grid-template-columns: 320px 1fr;
    background: #fff;
}
.dev-soft-cover { background: var(--paper); border-right: 1px solid var(--line); }
/* 没填封面就整块不渲染，卡片改成单列 —— 否则左边会留一条 320px 的空白 */
.dev-soft-card--noimg { grid-template-columns: 1fr; }
.dev-soft-cover img { width: 100%; height: 100%; object-fit: cover; display: block; }

.dev-soft-body { padding: 28px 30px 26px; display: flex; flex-direction: column; }
.dev-soft-top { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; }
.dev-soft-name { font-family: var(--serif); font-size: 21px; font-weight: 700; letter-spacing: 1.5px; }
.dev-soft-ver {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 1.2px;
    color: #9a9a9a;
    border: 1px solid var(--line);
    padding: 2px 7px;
}
.dev-soft-sum { margin-top: 14px; font-size: 13.8px; color: #656565; line-height: 1.95; }

.dev-soft-feats { list-style: none; margin-top: 18px; display: grid; gap: 7px; }
.dev-soft-feats li { font-size: 13.2px; color: #555; padding-left: 16px; position: relative; line-height: 1.85; }
.dev-soft-feats li::before {
    content: "";
    position: absolute;
    left: 0;
    top: .85em;
    width: 6px;
    height: 1px;
    background: #b5b5b5;
}

.dev-soft-foot {
    margin-top: auto;
    padding-top: 24px;
    display: flex;
    align-items: center;
    gap: 18px;
    flex-wrap: wrap;
}
.dev-soft-price { font-family: var(--mono); font-size: 16px; letter-spacing: .5px; color: var(--black); }

.dev-btn--sm { padding: 10px 22px; font-size: 11.5px; letter-spacing: 2px; }

/* ---------------- 联系我们 ---------------- */
/* ★ 两栏等高：右侧二维码卡跟着左侧文字块撑满 ——
   这是「二维码和左边文字上下齐平」的实现方式（靠 stretch，不是写死像素）。 */
.dev-contact-grid {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 56px;
    align-items: stretch;
}

/* ★ 标签必须锁定宽度且不换行：早先写 `.dev-contact--big span`（0,1,1）与后面的
   `.dev-contact span`（同为 0,1,1）打平，后者在源序里更靠后 ⇒ 42px 生效，
   "手机 / 微信" 被挤成两行、"座机" 跑到左边。改成 li > span（0,1,2）就压得住了。 */
.dev-contact--big { margin-top: 0; gap: 14px; }
.dev-contact--big li { font-size: 16px; gap: 16px; align-items: baseline; }
.dev-contact--big li > span {
    flex: 0 0 104px;
    font-size: 11px;
    letter-spacing: 1.2px;
    white-space: nowrap;
}
.dev-contact--big a { border-bottom: 1px solid var(--line); }
.dev-contact-none { color: #b09a6a; font-size: 13px !important; }

.dev-tips { margin-top: 44px; padding-top: 32px; border-top: 1px solid var(--line); }
.dev-tips-list { margin: 18px 0 0 20px; display: grid; gap: 12px; font-size: 13.8px; color: #5f5f5f; line-height: 1.95; }
.dev-tips-list b { font-weight: 600; color: var(--ink); }
.dev-tips-note { margin-top: 20px; font-size: 12.8px; color: #8d8d8d; line-height: 1.9; }

/* 二维码卡片：边框与白底放在**容器**上，图片本身不再带边距 ——
   这样卡片高度能跟着左栏 stretch 撑满，图片在中间按比例缩放，不会被白边吃掉一块。 */
.dev-contact-qr {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 18px 14px;
    background: #fff;
    border: 1px solid var(--line);
}
.dev-contact-qr img {
    /* 宽度吃满卡片内宽（300 - padding），正方形图自然就是这么大；
       高度用 auto + max-height 兜住非正方形图，不会把卡片撑破。 */
    width: 100%;
    height: auto;
    max-height: 100%;
    object-fit: contain;
    border: 0;
    padding: 0;
}
.dev-contact-qr span { display: block; font-family: var(--mono); font-size: 10px; letter-spacing: 1.4px; color: #a3a3a3; }

/* ---------------- 底部联系条（首页用） ---------------- */
.dev-cta {
    background: var(--black);
    color: #f2f2f2;
    padding: 64px 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
    background-size: 38px 38px, 38px 38px;
}
.dev-cta-inner { max-width: 1180px; margin: 0 auto; padding: 0 28px; display: flex; align-items: center; justify-content: space-between; gap: 28px; flex-wrap: wrap; }
.dev-cta-title { font-family: var(--serif); font-size: clamp(20px, 2.4vw, 28px); font-weight: 700; letter-spacing: 2px; }
.dev-cta-tip { margin-top: 12px; color: rgba(255, 255, 255, .62); font-size: 13.5px; max-width: 560px; }

/* ---------------- 页脚 ---------------- */
.dev-foot { border-top: 1px solid var(--line); background: var(--paper); }
.dev-contact { list-style: none; margin-top: 22px; display: grid; gap: 8px; }
.dev-contact li { display: flex; gap: 14px; font-size: 13.5px; align-items: baseline; }
.dev-contact span {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 1.4px;
    color: #a8a8a8;
    flex: 0 0 42px;
}
.dev-contact em { font-style: normal; color: #555; }

/* 页脚右侧的备案号：要求"不带下划线、能点开就行" ⇒ 只继承颜色，不加装饰 */
.dev-icp {
    color: inherit;
    text-decoration: none;
    transition: opacity .3s ease;
}

.dev-foot-bottom {
    /* 上边框由 .dev-foot 负责画，这里不再重复画一条 */
    border-top: 0;
    padding: 16px 28px;
    max-width: 1180px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    font-family: var(--mono);
    font-size: 9.5px;
    letter-spacing: 1.4px;
    color: #aaa;
}

/* 空板块提示（表还没建、或后台还没录内容时） */
.dev-empty { padding: 40px 0; color: #a5a5a5; font-size: 13.5px; letter-spacing: 1px; }

/* ============================================================
   悬停：只给真有鼠标的设备
   ============================================================ */
@media (hover: hover) and (pointer: fine) {
    .dev-nav a:hover { color: var(--black); }
    .dev-more:hover { color: var(--black); border-color: var(--black); }
    .dev-btn--light:hover { background: transparent; color: #fff; border-color: #fff; }
    .dev-btn--ghost:hover { background: #fff; color: var(--black); border-color: #fff; }
    .dev-btn--dark:hover { background: transparent; color: var(--black); border-color: var(--black); }
    .dev-btn--line:hover { background: var(--black); color: #fff; }
    .dev-case img { transition: transform .6s cubic-bezier(.22,.61,.36,1); }
    .dev-case:hover img { transform: scale(1.03); }
    .dev-case:hover .dev-case-link { border-color: var(--black); }
    .dev-faq summary:hover { color: var(--black); }
}

/* ============================================================
   手机 / 窄屏
   ============================================================ */
@media (max-width: 900px) {
    .dev-cases { grid-template-columns: repeat(2, 1fr); gap: 18px; }
    .dev-service { grid-template-columns: 40px 1fr; }
    .dev-service-price { grid-column: 2; text-align: left; margin-top: 10px; color: #555; }
    .dev-soft-card { grid-template-columns: 1fr; }
    .dev-soft-cover { border-right: 0; border-bottom: 1px solid var(--line); aspect-ratio: 16 / 9; }
    .dev-contact-grid { grid-template-columns: 1fr; gap: 36px; }
    .dev-contact-qr { text-align: left; }
}

@media (max-width: 720px) {
    .dev-top-inner {
        height: auto;
        padding: 14px 20px 12px;
        flex-wrap: wrap;
        gap: 12px 16px;
    }
    .dev-brand-cn { font-size: 15px; letter-spacing: 1.5px; }

    /* 导航横排、可横向滑动：五个中文项在 390 宽下放不下，换行会把头部顶得太高 */
    .dev-nav {
        order: 3;
        width: 100%;
        margin-left: 0;
        gap: 20px;
        font-size: 12.5px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        padding-bottom: 2px;
    }
    .dev-nav::-webkit-scrollbar { display: none; }
    .dev-nav a { white-space: nowrap; }

    .dev-wrap, .dev-hero-inner, .dev-cta-inner { padding-left: 20px; padding-right: 20px; }
    .dev-foot-bottom { padding-left: 20px; padding-right: 20px; }

    .dev-sec { padding: 52px 0; }
    .dev-h1 { font-size: 30px; letter-spacing: 2px; }
    .dev-hero { padding: 56px 0 60px; }
    .dev-hero-intro { margin-top: 26px; font-size: 14px; }
    .dev-hero-actions { margin-top: 32px; }
    .dev-btn { padding: 12px 26px; letter-spacing: 2px; }

    .dev-cases { grid-template-columns: 1fr; }
    .dev-step { grid-template-columns: 56px 1fr; gap: 16px; padding: 24px 2px; }
    .dev-step::before { font-size: 20px; }
    .dev-step-title { font-size: 17px; }
    .dev-faq summary { font-size: 15.5px; padding: 20px 36px 20px 2px; }
    .dev-faq-answer { padding: 0 36px 22px 2px; font-size: 13.5px; }

    .dev-cta { padding: 46px 0; }

    .dev-soft-body { padding: 20px 18px 22px; }
    .dev-soft-name { font-size: 19px; }
    .dev-contact--big li { font-size: 14.5px; gap: 12px; }
    .dev-contact--big span { flex: 0 0 74px; }
    .dev-contact-qr img { width: 150px; height: 150px; }
    .dev-tips-list { margin-left: 18px; font-size: 13.2px; }
}

/* 系统关了动效：直接到位 */
@media (prefers-reduced-motion: reduce) {
    * { transition: none !important; }
}