/* =====================================================================
   长春小程序开发获客站 —— 全站唯一样式源
   铁律：同一类元素全站同一套组件，页面里不另写样式
   移动优先；微信内置浏览器为主要场景
   ===================================================================== */

:root {
    --c-primary: #1657e0;
    --c-primary-d: #0f43b4;
    --c-primary-l: #eaf1ff;
    --c-ink: #10192b;
    --c-ink-2: #4c5872;
    --c-ink-3: #8892a6;
    --c-line: #e6eaf2;
    --c-bg: #f5f7fb;
    --c-white: #ffffff;
    --c-warn: #ff6a00;
    --r-lg: 16px;
    --r: 12px;
    --r-sm: 8px;
    --sh: 0 1px 2px rgba(16, 25, 43, .04), 0 8px 24px rgba(16, 25, 43, .06);
    --sh-h: 0 2px 6px rgba(16, 25, 43, .08), 0 14px 36px rgba(16, 25, 43, .10);
    --wrap: 1120px;
    --gap: 16px;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

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

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
                 "Microsoft YaHei", "Source Han Sans SC", sans-serif;
    color: var(--c-ink);
    background: var(--c-white);
    font-size: 15px;
    line-height: 1.7;
    overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--c-primary); text-decoration: none; }
h1, h2, h3, h4 { margin: 0; line-height: 1.35; font-weight: 700; }
p { margin: 0 0 10px; }
ul, ol { margin: 0; padding: 0; list-style: none; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 16px; width: 100%; }
.center { text-align: center; }
.nowrap { white-space: nowrap; }
.empty { color: var(--c-ink-3); padding: 32px 0; text-align: center; }

/* ---------------- 顶部导航 ---------------- */
.hd {
    position: sticky; top: 0; z-index: 60;
    background: rgba(255, 255, 255, .92);
    backdrop-filter: saturate(180%) blur(12px);
    border-bottom: 1px solid var(--c-line);
}
.hd-in { display: flex; align-items: center; gap: 12px; height: 56px; }
.logo { display: flex; align-items: center; gap: 8px; flex: 0 0 auto; }
.logo-mark {
    width: 28px; height: 28px; border-radius: 8px; flex: 0 0 auto;
    background: linear-gradient(135deg, var(--c-primary), #4b8bff);
    color: #fff; font-size: 14px; font-weight: 700;
    display: flex; align-items: center; justify-content: center;
}
.logo-txt { font-size: 15px; font-weight: 700; color: var(--c-ink); white-space: nowrap; }
.nav { display: none; flex: 1 1 auto; gap: 4px; }
.nav-a {
    color: var(--c-ink-2); font-size: 14px; padding: 6px 10px; border-radius: var(--r-sm);
    white-space: nowrap;
}
.nav-a.on, .nav-a:hover { color: var(--c-primary); background: var(--c-primary-l); }
.hd-tel { margin-left: auto; flex: 0 0 auto; }

/* ---------------- 按钮（全站唯一按钮体系） ---------------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    font-size: 15px; font-weight: 600; line-height: 1;
    padding: 13px 20px; border-radius: var(--r);
    border: 1px solid transparent; cursor: pointer;
    transition: transform .12s ease, box-shadow .15s ease, background .15s ease;
    text-align: center;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--c-primary); color: #fff; box-shadow: 0 6px 16px rgba(22, 87, 224, .24); }
.btn-primary:hover { background: var(--c-primary-d); }
.btn-ghost { background: var(--c-white); color: var(--c-primary); border-color: var(--c-primary); }
.btn-ghost:hover { background: var(--c-primary-l); }
.btn-sm { font-size: 14px; padding: 9px 14px; border-radius: var(--r-sm); }
.btn-block { width: 100%; }

/* ---------------- 首屏 ---------------- */
.hero {
    padding: 30px 0 26px;
    background:
        radial-gradient(1200px 420px at 12% -20%, #e6efff 0%, rgba(230, 239, 255, 0) 62%),
        linear-gradient(180deg, #f8fbff 0%, var(--c-white) 82%);
}
.hero-h1 { font-size: 25px; letter-spacing: -.3px; margin-bottom: 12px; }
.hero-sub { font-size: 15px; color: var(--c-ink-2); margin-bottom: 14px; }
.hero-pts { display: flex; flex-wrap: wrap; gap: 8px 8px; margin-bottom: 18px; }
.hero-pts li {
    font-size: 13px; color: var(--c-primary-d);
    background: var(--c-primary-l); border-radius: 999px; padding: 5px 12px;
    border: 1px solid #d6e3ff;
}
.hero-btns { display: flex; flex-wrap: wrap; gap: 10px; }
.hero-btns .btn { flex: 1 1 auto; min-width: 150px; }
.hero-note { font-size: 12.5px; color: var(--c-ink-3); margin: 14px 0 0; }

/* ---------------- 区块（全站统一标题样式，一律左对齐） ---------------- */
.sec { padding: 32px 0; border-top: 1px solid var(--c-line); }
.sec:first-of-type { border-top: 0; }
.sec-h { margin-bottom: 18px; }
.sec-t { font-size: 20px; letter-spacing: -.2px; padding-left: 11px; position: relative; }
.sec-t::before {
    content: ""; position: absolute; left: 0; top: 4px; bottom: 4px; width: 4px;
    border-radius: 3px; background: linear-gradient(180deg, var(--c-primary), #6ea1ff);
}
.sec-s { font-size: 13.5px; color: var(--c-ink-2); margin: 6px 0 0; padding-left: 11px; }

/* ---------------- 报价三档 ---------------- */
.price-grid { display: grid; grid-template-columns: 1fr; gap: 14px; }
.price-card {
    background: var(--c-white); border: 1px solid var(--c-line);
    border-radius: var(--r-lg); padding: 18px 16px; box-shadow: var(--sh);
    display: flex; flex-direction: column; position: relative;
}
.price-card.hot { border-color: var(--c-primary); box-shadow: var(--sh-h); }
.price-flag {
    position: absolute; top: -11px; left: 16px;
    background: var(--c-primary); color: #fff; font-size: 12px; font-weight: 600;
    padding: 3px 10px; border-radius: 999px;
}
.price-tier { font-size: 17px; }
.price-scope { font-size: 13px; color: var(--c-ink-2); margin: 4px 0 10px; }
.price-num { font-size: 30px; font-weight: 800; color: var(--c-primary); line-height: 1.1; margin: 0 0 4px; letter-spacing: -1px; }
.price-num em { font-size: 17px; font-style: normal; font-weight: 700; margin-right: 1px; }
.price-num span { font-size: 14px; font-weight: 600; color: var(--c-ink-2); margin-left: 3px; }
.price-for { font-size: 13.5px; color: var(--c-ink-2); margin-bottom: 10px; }
.price-items { margin-bottom: 12px; flex: 1 1 auto; }
.price-items li { font-size: 13.5px; color: var(--c-ink-2); padding: 3px 0 3px 20px; position: relative; }
.price-items li::before {
    content: ""; position: absolute; left: 5px; top: 11px; width: 5px; height: 9px;
    border: 2px solid var(--c-primary); border-top: 0; border-left: 0;
    transform: rotate(42deg); border-radius: 1px;
}
.price-time { font-size: 13px; color: var(--c-ink-3); margin-bottom: 12px; }
.price-foot { font-size: 12.5px; color: var(--c-ink-3); margin: 14px 0 0; }

/* ---------------- 表格（AI 抽取单元，全站统一） ---------------- */
.tbl-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid var(--c-line); border-radius: var(--r); }
.tbl { width: 100%; border-collapse: collapse; font-size: 13.5px; min-width: 520px; }
.tbl th, .tbl td { padding: 11px 12px; text-align: left; border-bottom: 1px solid var(--c-line); vertical-align: top; }
.tbl th { background: #f8fafd; font-weight: 700; color: var(--c-ink); white-space: nowrap; }
.tbl tr:last-child td { border-bottom: 0; }
.tbl td:first-child { font-weight: 600; }

/* ---------------- 步骤流程 ---------------- */
.step-list { display: grid; gap: 12px; }
.step { display: flex; gap: 12px; background: var(--c-white); border: 1px solid var(--c-line); border-radius: var(--r); padding: 14px; }
.step-n {
    flex: 0 0 auto; width: 26px; height: 26px; border-radius: 50%;
    background: var(--c-primary-l); color: var(--c-primary); font-size: 13px; font-weight: 700;
    display: flex; align-items: center; justify-content: center;
}
.step-b { flex: 1 1 auto; }
.step-t { font-size: 15px; display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.step-d { font-size: 12px; font-weight: 600; color: var(--c-primary); background: var(--c-primary-l); padding: 2px 8px; border-radius: 999px; }
.step-p { font-size: 13.5px; color: var(--c-ink-2); margin: 5px 0 0; }

/* ---------------- 行业卡片 ---------------- */
.ind-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.ind-card { background: var(--c-bg); border: 1px solid var(--c-line); border-radius: var(--r); padding: 14px; }
.ind-t { font-size: 15px; margin-bottom: 8px; }
.ind-ul { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.ind-ul li { font-size: 12.5px; color: var(--c-ink-2); background: var(--c-white); border: 1px solid var(--c-line); border-radius: 6px; padding: 3px 8px; }
.ind-a { font-size: 13px; font-weight: 600; }

/* ---------------- FAQ ---------------- */
.faq { border: 1px solid var(--c-line); border-radius: var(--r); overflow: hidden; background: var(--c-white); }
.faq-i { border-bottom: 1px solid var(--c-line); }
.faq-i:last-child { border-bottom: 0; }
.faq-q {
    display: flex; align-items: flex-start; gap: 10px;
    padding: 14px; cursor: pointer; list-style: none;
}
.faq-q::-webkit-details-marker { display: none; }
.faq-q h3 { font-size: 15px; flex: 1 1 auto; font-weight: 600; }
.faq-ico { flex: 0 0 auto; width: 16px; height: 16px; margin-top: 4px; position: relative; }
.faq-ico::before, .faq-ico::after {
    content: ""; position: absolute; background: var(--c-ink-3); border-radius: 2px;
}
.faq-ico::before { left: 0; right: 0; top: 7px; height: 2px; }
.faq-ico::after { top: 0; bottom: 0; left: 7px; width: 2px; transition: opacity .15s; }
.faq-i[open] .faq-ico::after { opacity: 0; }
.faq-a { padding: 0 14px 14px; }
.faq-a p { font-size: 14px; color: var(--c-ink-2); margin: 0; }

/* ---------------- 留资表单 ---------------- */
.lead-card {
    background: linear-gradient(180deg, #f3f7ff 0%, var(--c-white) 100%);
    border: 1px solid #d9e5ff; border-radius: var(--r-lg); padding: 20px 16px; box-shadow: var(--sh);
}
.lead-t { font-size: 19px; }
.lead-s { font-size: 13.5px; color: var(--c-ink-2); margin: 6px 0 16px; }
.lead-form { display: grid; gap: 12px; }
.lf { display: block; }
.lf-l { display: block; font-size: 13px; font-weight: 600; color: var(--c-ink-2); margin-bottom: 5px; }
.lf input, .lf select, .lf textarea {
    width: 100%; font-size: 15px; font-family: inherit; color: var(--c-ink);
    padding: 12px 12px; border: 1px solid var(--c-line); border-radius: var(--r-sm);
    background: var(--c-white); outline: none; transition: border-color .15s, box-shadow .15s;
    appearance: none;
}
.lf select { background-image: linear-gradient(45deg, transparent 50%, var(--c-ink-3) 50%), linear-gradient(135deg, var(--c-ink-3) 50%, transparent 50%); background-position: calc(100% - 18px) 19px, calc(100% - 13px) 19px; background-size: 5px 5px, 5px 5px; background-repeat: no-repeat; }
.lf textarea { resize: vertical; line-height: 1.6; }
.lf input:focus, .lf select:focus, .lf textarea:focus { border-color: var(--c-primary); box-shadow: 0 0 0 3px rgba(22, 87, 224, .12); }
.lead-priv { font-size: 12px; color: var(--c-ink-3); margin: 10px 0 0; text-align: center; }
.lead-ok { text-align: center; padding: 24px 0; }
.lead-ok-t { font-size: 19px; font-weight: 700; color: #16a34a; margin-bottom: 8px; }
.lead-err { color: #d81b1b; font-size: 13px; margin: 8px 0 0; text-align: center; }

/* ---------------- CTA ---------------- */
.cta-box { background: var(--c-ink); border-radius: var(--r-lg); padding: 20px 16px; text-align: center; }
.cta-t { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 14px; }
.cta-btns { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.cta-btns .btn-primary { background: #fff; color: var(--c-ink); box-shadow: none; }
.cta-bar {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 70;
    display: flex; gap: 8px; padding: 8px 12px calc(8px + env(safe-area-inset-bottom));
    background: rgba(255, 255, 255, .96); backdrop-filter: blur(10px);
    border-top: 1px solid var(--c-line);
}
.cb { flex: 1 1 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 1px; border-radius: var(--r); padding: 8px 6px; line-height: 1.25; }
.cb b { font-size: 15px; font-weight: 700; }
.cb span { font-size: 11.5px; opacity: .85; }
.cb-tel { background: var(--c-primary-l); color: var(--c-primary-d); }
.cb-lead { background: var(--c-primary); color: #fff; }
.cb-space { height: 76px; }

/* ---------------- 文章 ---------------- */
.post-grid { display: grid; grid-template-columns: 1fr; gap: 12px; }
.post-card {
    display: block; background: var(--c-white); border: 1px solid var(--c-line);
    border-radius: var(--r); padding: 14px; box-shadow: var(--sh);
}
.post-card:hover { border-color: #c9d8f7; }
.pc-t { font-size: 15.5px; color: var(--c-ink); margin-bottom: 5px; }
.pc-d { font-size: 13.5px; color: var(--c-ink-2); margin-bottom: 6px; }
.pc-m { font-size: 12px; color: var(--c-ink-3); }
.crumb { padding: 14px 16px 0; font-size: 12.5px; color: var(--c-ink-3); max-width: var(--wrap); margin: 0 auto; }
.crumb a { color: var(--c-ink-3); }
.crumb-s { margin: 0 5px; }
.crumb-c { color: var(--c-ink-2); }
.article { padding-top: 12px; padding-bottom: 8px; }
.art-t { font-size: 22px; letter-spacing: -.3px; margin-bottom: 8px; }
.art-m { font-size: 12.5px; color: var(--c-ink-3); padding-bottom: 14px; border-bottom: 1px solid var(--c-line); margin-bottom: 16px; }
.art-body { font-size: 15.5px; color: #202a3d; word-wrap: break-word; }
.art-body h2 {
    font-size: 19px; margin: 26px 0 10px; padding-left: 11px; position: relative;
}
.art-body h2::before {
    content: ""; position: absolute; left: 0; top: 4px; bottom: 4px; width: 4px;
    border-radius: 3px; background: var(--c-primary);
}
.art-body h3 { font-size: 16.5px; margin: 18px 0 6px; }
.art-body p { margin: 0 0 12px; }
.art-body ul, .art-body ol { margin: 0 0 14px; padding-left: 0; }
.art-body ul li { padding: 3px 0 3px 20px; position: relative; }
.art-body ul li::before { content: ""; position: absolute; left: 6px; top: 12px; width: 5px; height: 5px; border-radius: 50%; background: var(--c-primary); }
.art-body ol { counter-reset: n; }
.art-body ol li { padding: 3px 0 3px 28px; position: relative; counter-increment: n; }
.art-body ol li::before {
    content: counter(n); position: absolute; left: 0; top: 4px;
    width: 19px; height: 19px; border-radius: 50%; background: var(--c-primary-l); color: var(--c-primary);
    font-size: 12px; font-weight: 700; display: flex; align-items: center; justify-content: center;
}
.art-body table { width: 100%; border-collapse: collapse; font-size: 13.5px; margin: 12px 0 18px; }
.art-body th, .art-body td { border: 1px solid var(--c-line); padding: 9px 10px; text-align: left; vertical-align: top; }
.art-body th { background: #f8fafd; font-weight: 700; }
.art-body img { border-radius: var(--r); margin: 8px 0; }
.art-body strong { color: var(--c-ink); }
.art-tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 20px 0 4px; }
.tag { font-size: 12.5px; color: var(--c-ink-2); background: var(--c-bg); border: 1px solid var(--c-line); border-radius: 999px; padding: 4px 11px; }
.pn { display: grid; gap: 8px; margin-top: 18px; }
.pn-a { display: block; background: var(--c-bg); border: 1px solid var(--c-line); border-radius: var(--r); padding: 11px 13px; }
.pn-l { display: block; font-size: 12px; color: var(--c-ink-3); }
.pn-t { display: block; font-size: 14px; color: var(--c-ink); }
.pager { display: flex; align-items: center; justify-content: center; gap: 12px; margin-top: 20px; }
.pg { font-size: 14px; padding: 8px 14px; border: 1px solid var(--c-line); border-radius: var(--r-sm); color: var(--c-ink-2); background: var(--c-white); }
.pg-c { font-size: 13px; color: var(--c-ink-3); }

/* ---------------- 页脚 ---------------- */
.ft { background: #0d1526; color: #93a0b8; padding: 24px 0; margin-top: 8px; }
.ft p { margin: 0 0 4px; font-size: 12.5px; line-height: 1.7; }
.ft-1 { color: #e6ecf7; font-size: 13.5px; margin-bottom: 8px; }
.ft-3 { color: #6b7793; }

/* ---------------- 平板 / 桌面 ---------------- */
@media (min-width: 700px) {
    body { font-size: 15.5px; }
    .nav { display: flex; }
    .hero { padding: 44px 0 38px; }
    .hero-h1 { font-size: 32px; }
    .hero-sub { font-size: 16.5px; max-width: 760px; }
    .hero-btns .btn { flex: 0 0 auto; min-width: 190px; }
    .sec { padding: 44px 0; }
    .sec-t { font-size: 24px; }
    .sec-s { font-size: 14.5px; }
    .price-grid { grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .ind-grid { grid-template-columns: repeat(3, 1fr); }
    .step-list { grid-template-columns: repeat(2, 1fr); }
    .post-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .pn { grid-template-columns: 1fr 1fr; }
    .lead-card { padding: 28px 26px; max-width: 720px; margin: 0 auto; }
    .lead-form { grid-template-columns: 1fr 1fr; }
    .lf-full { grid-column: 1 / -1; }
    .art-t { font-size: 27px; }
    .art-body { font-size: 16px; }
    .art-body h2 { font-size: 21px; }
    .faq-q { padding: 16px 18px; }
    .faq-a { padding: 0 18px 16px; }
}
@media (min-width: 1024px) {
    .ind-grid { grid-template-columns: repeat(4, 1fr); }
    .post-grid { grid-template-columns: repeat(3, 1fr); }
    .cta-bar { display: none; }
    .cb-space { height: 0; }
}