/* ==========================================================================
   AndSoo 软件官网 - 主样式
   设计语言参考 Foxit 官网：白底 + 品牌红点缀、卡片矩阵、大留白、轻阴影
   所有图形用内联 SVG 与 CSS 渐变，零外链图片
   ========================================================================== */

:root {
    --brand: #e02020;
    --brand-2: #ff5a3c;
    --brand-soft: #fff1ee;
    --ink: #14181f;
    --text: #2b313c;
    --sub: #6b7480;
    --line: #e9ecf1;
    --line-2: #dfe3ea;
    --bg: #f6f7f9;
    --white: #fff;
    --ok: #0a8f4a;
    --warn: #d97706;
    --radius: 14px;
    --radius-sm: 10px;
    --radius-lg: 20px;
    --shadow: 0 2px 8px rgba(20, 25, 40, .05);
    --shadow-md: 0 6px 20px rgba(20, 25, 40, .08);
    --shadow-lg: 0 16px 40px rgba(20, 25, 40, .12);
    --wrap: 1200px;
    --header-h: 68px;
}

* { box-sizing: border-box; }

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

body {
    margin: 0;
    background: var(--white);
    color: var(--text);
    font: 15px/1.7 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
          "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; border: 0; }
h1, h2, h3, h4, h5 { margin: 0; color: var(--ink); font-weight: 700; line-height: 1.35; }
p { margin: 0 0 12px; }
ul, ol { margin: 0 0 12px; padding-left: 22px; }
code { background: #f1f3f7; padding: 2px 6px; border-radius: 4px; font-size: .9em; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.muted { color: var(--sub); }
.center { text-align: center; }
.nowrap { white-space: nowrap; }

/* ---------------------------------------------------------------- 按钮 */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 11px 24px; border: 1px solid transparent; border-radius: 999px;
    font-size: 15px; font-weight: 600; line-height: 1; cursor: pointer;
    transition: all .18s ease; white-space: nowrap;
}
.btn svg { flex: none; }
.btn-primary {
    background: linear-gradient(135deg, var(--brand), var(--brand-2));
    color: #fff; box-shadow: 0 6px 16px rgba(224, 32, 32, .26);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 10px 22px rgba(224, 32, 32, .34); }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: #000; }
.btn-ghost { background: #fff; border-color: var(--line-2); color: var(--ink); }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); }
.btn-light { background: rgba(255, 255, 255, .16); border-color: rgba(255, 255, 255, .4); color: #fff; }
.btn-light:hover { background: rgba(255, 255, 255, .26); }
.btn-lg { padding: 15px 34px; font-size: 16px; }
.btn-sm { padding: 7px 16px; font-size: 13px; }
.btn-block { width: 100%; }
.btn:disabled, .btn.is-disabled { opacity: .5; cursor: not-allowed; transform: none; }
.btn-link { color: var(--brand); font-weight: 600; }
.btn-link:hover { text-decoration: underline; }

/* ---------------------------------------------------------------- 头部 */
.site-header {
    position: sticky; top: 0; z-index: 60;
    background: rgba(255, 255, 255, .92);
    backdrop-filter: saturate(180%) blur(12px);
    border-bottom: 1px solid var(--line);
}
.header-inner {
    display: flex; align-items: center; gap: 28px;
    min-height: var(--header-h); padding-top: 8px; padding-bottom: 8px;
}
.brand { display: flex; align-items: center; gap: 10px; flex: none; }
.brand-logo {
    width: var(--logo-size, 40px); height: var(--logo-size, 40px);
    border-radius: 11px; flex: none;
    background: linear-gradient(135deg, var(--brand), var(--brand-2));
    display: inline-flex; align-items: center; justify-content: center;
    color: #fff; font-weight: 800; font-size: calc(var(--logo-size, 40px) * .42);
    letter-spacing: -.5px; box-shadow: 0 4px 12px rgba(224, 32, 32, .3);
}
.brand-name { font-size: 20px; font-weight: 800; color: var(--ink); letter-spacing: -.3px; }
.brand-sub { font-size: 11px; color: var(--sub); letter-spacing: 2px; margin-top: -3px; }

.main-nav { display: flex; align-items: center; gap: 4px; flex: 1; }
.main-nav > a, .nav-item > a {
    display: flex; align-items: center; gap: 5px;
    padding: 9px 14px; border-radius: 9px; font-size: 15px; font-weight: 500; color: var(--text);
    transition: all .15s;
}
.main-nav > a:hover, .nav-item > a:hover { color: var(--brand); background: var(--brand-soft); }
.main-nav > a.on, .nav-item.on > a { color: var(--brand); font-weight: 700; }

.nav-item { position: relative; }
.nav-item .caret { width: 10px; height: 10px; opacity: .5; transition: transform .2s; }
.nav-item:hover .caret { transform: rotate(180deg); }
.drop {
    position: absolute; top: calc(100% + 8px); left: -12px; min-width: 620px;
    background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
    box-shadow: var(--shadow-lg); padding: 22px 24px;
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px 24px;
    opacity: 0; visibility: hidden; transform: translateY(-6px);
    transition: all .18s ease;
}
.nav-item:hover .drop { opacity: 1; visibility: visible; transform: translateY(0); }
.drop-col h5 { font-size: 12px; color: var(--sub); font-weight: 600; letter-spacing: .5px;
               margin-bottom: 8px; text-transform: uppercase; }
.drop-col a { display: flex; align-items: center; gap: 9px; padding: 6px 8px; margin-left: -8px;
              border-radius: 8px; font-size: 14px; color: var(--text); }
.drop-col a:hover { background: var(--bg); color: var(--brand); }
.drop-ico { width: 26px; height: 26px; border-radius: 7px; flex: none;
            display: inline-flex; align-items: center; justify-content: center; color: #fff; }
.drop-foot { grid-column: 1 / -1; margin-top: 10px; padding-top: 14px; border-top: 1px solid var(--line);
             display: flex; justify-content: space-between; align-items: center; font-size: 13px; }

.header-actions { display: flex; align-items: center; gap: 10px; flex: none; }
.header-actions .who { font-size: 14px; color: var(--sub); }
.nav-toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; color: var(--ink); }

/* ---------------------------------------------------------------- Hero */
.hero {
    position: relative; overflow: hidden;
    background: linear-gradient(160deg, #fff5f2 0%, #ffffff 46%, #f4f7ff 100%);
    border-bottom: 1px solid var(--line);
}
.hero::before {
    content: ''; position: absolute; width: 520px; height: 520px; right: -140px; top: -220px;
    background: radial-gradient(circle, rgba(224, 32, 32, .14) 0%, transparent 68%); border-radius: 50%;
}
.hero::after {
    content: ''; position: absolute; width: 460px; height: 460px; left: -160px; bottom: -260px;
    background: radial-gradient(circle, rgba(58, 96, 255, .12) 0%, transparent 68%); border-radius: 50%;
}
.hero-inner {
    position: relative; z-index: 2;
    display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center;
    padding: 68px 24px 76px;
}
.hero-tag {
    display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px; border-radius: 999px;
    background: #fff; border: 1px solid var(--line-2); box-shadow: var(--shadow);
    font-size: 13px; font-weight: 600; color: var(--brand); margin-bottom: 20px;
}
.hero h1 { font-size: 44px; line-height: 1.2; letter-spacing: -1px; margin-bottom: 16px; }
.hero h1 em { font-style: normal; color: var(--brand); }
.hero .lead { font-size: 17px; color: var(--sub); max-width: 520px; margin-bottom: 26px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 26px; }
.hero-points { display: flex; gap: 26px; flex-wrap: wrap; }
.hero-point { display: flex; align-items: center; gap: 9px; font-size: 14px; color: var(--text); }
.hero-point .dot { width: 22px; height: 22px; border-radius: 50%; background: var(--brand-soft);
                   display: inline-flex; align-items: center; justify-content: center; flex: none; }

/* Hero 右侧产品预览（纯 CSS/SVG 拼出的软件界面示意） */
.hero-visual { position: relative; }
.window {
    background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg); overflow: hidden;
}
.window-bar { display: flex; align-items: center; gap: 7px; padding: 12px 16px;
              background: #fafbfc; border-bottom: 1px solid var(--line); }
.window-bar i { width: 10px; height: 10px; border-radius: 50%; display: block; }
.window-bar i:nth-child(1) { background: #ff5f57; }
.window-bar i:nth-child(2) { background: #febc2e; }
.window-bar i:nth-child(3) { background: #28c840; }
.window-title { margin-left: 10px; font-size: 12px; color: var(--sub); }
.window-body { padding: 18px; }
.mock-row { display: flex; gap: 12px; align-items: center; margin-bottom: 14px; }
.mock-thumb { width: 46px; height: 58px; border-radius: 6px; flex: none;
              background: linear-gradient(150deg, var(--brand-soft), #ffe6de); position: relative; }
.mock-thumb::after { content: ''; position: absolute; inset: 8px; border-radius: 3px;
                     border: 1.5px dashed rgba(224, 32, 32, .35); }
.mock-lines { flex: 1; }
.mock-line { height: 9px; border-radius: 5px; background: #eef1f5; margin-bottom: 7px; }
.mock-line.w80 { width: 80%; } .mock-line.w60 { width: 60%; } .mock-line.w45 { width: 45%; }
.mock-line.tool { background: linear-gradient(90deg, var(--brand), var(--brand-2)); height: 10px; }
.mock-toolbar { display: flex; gap: 6px; margin-bottom: 16px; padding-bottom: 14px;
                border-bottom: 1px solid var(--line); }
.mock-btn { height: 26px; flex: 1; border-radius: 6px; background: #f1f3f7; }
.mock-btn.on { background: linear-gradient(135deg, var(--brand), var(--brand-2)); }
.float-card {
    position: absolute; background: #fff; border: 1px solid var(--line); border-radius: 12px;
    box-shadow: var(--shadow-md); padding: 12px 16px; display: flex; align-items: center; gap: 10px;
    font-size: 13px; font-weight: 600; color: var(--ink);
}
.float-card .fc-ico { width: 30px; height: 30px; border-radius: 9px; color: #fff; flex: none;
                      display: inline-flex; align-items: center; justify-content: center; }
.float-1 { left: -26px; bottom: 64px; animation: floaty 5s ease-in-out infinite; }
.float-2 { right: -18px; top: 34px; animation: floaty 6.5s ease-in-out infinite reverse; }
@keyframes floaty { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-9px); } }

/* ---------------------------------------------------------------- 区块 */
.section { padding: 68px 0; }
.section.alt { background: var(--bg); }
.section.tight { padding: 46px 0; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 42px; }
.section-head h2 { font-size: 32px; letter-spacing: -.6px; margin-bottom: 12px; }
.section-head p { color: var(--sub); font-size: 16px; }
.section-head.left { text-align: left; margin-left: 0; }
.eyebrow { display: inline-block; font-size: 13px; font-weight: 700; color: var(--brand);
           letter-spacing: 1.4px; text-transform: uppercase; margin-bottom: 10px; }

/* ---------------------------------------------------------------- 产品卡 */
.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.pcard {
    display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line);
    border-radius: var(--radius-lg); overflow: hidden; transition: all .22s ease;
}
.pcard:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
.pcard-cover {
    position: relative; height: 150px; display: flex; align-items: center; justify-content: center;
    background: var(--cover); overflow: hidden;
}
.pcard-cover::after {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(circle at 78% 18%, rgba(255, 255, 255, .38) 0%, transparent 55%);
}
.pcard-cover .cover-ico { color: #fff; opacity: .96; position: relative; z-index: 2; }
.pcard-body { padding: 20px 22px 22px; display: flex; flex-direction: column; flex: 1; }
.pcard h3 { font-size: 19px; margin-bottom: 7px; }
.pcard .sub { font-size: 13.5px; color: var(--sub); margin-bottom: 12px; }
.pcard .sum { font-size: 14px; color: var(--text); margin-bottom: 16px; flex: 1; }
.pcard-foot { display: flex; gap: 10px; align-items: center; margin-top: auto; }
.pcard-badge {
    position: absolute; top: 14px; left: 14px; z-index: 3; padding: 4px 11px; border-radius: 999px;
    background: rgba(255, 255, 255, .94); color: var(--brand); font-size: 12px; font-weight: 700;
}
.pcard-badge.r { left: auto; right: 14px; }

/* 横向大卡（首页主力产品） */
.fcard {
    display: grid; grid-template-columns: .9fr 1.1fr; gap: 34px; align-items: center;
    background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
    padding: 32px; transition: all .22s;
}
.fcard + .fcard { margin-top: 22px; }
.fcard:hover { box-shadow: var(--shadow-md); }
.fcard-visual { border-radius: var(--radius); height: 210px; display: flex; align-items: center;
                justify-content: center; background: var(--cover); color: #fff; position: relative; }
.fcard h3 { font-size: 25px; margin-bottom: 8px; }
.fcard .sub { color: var(--sub); margin-bottom: 14px; }
.fcard .sum { margin-bottom: 18px; }
.fcard-actions { display: flex; gap: 10px; flex-wrap: wrap; }

/* ---------------------------------------------------------------- 特色区 */
.feature { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 24px; }
.feature .fi {
    width: 48px; height: 48px; border-radius: 13px; display: inline-flex; align-items: center;
    justify-content: center; color: #fff; margin-bottom: 16px;
    background: linear-gradient(135deg, var(--brand), var(--brand-2));
}
.feature h3 { font-size: 17px; margin-bottom: 8px; }
.feature p { font-size: 14px; color: var(--sub); margin: 0; }

/* 数据条 */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.stat b { display: block; font-size: 34px; font-weight: 800; color: var(--ink); letter-spacing: -1px; }
.stat b em { font-style: normal; color: var(--brand); font-size: 22px; }
.stat span { font-size: 14px; color: var(--sub); }

/* ---------------------------------------------------------------- 下载中心 */
.dl-row {
    display: flex; align-items: center; gap: 18px; padding: 18px 22px; background: #fff;
    border: 1px solid var(--line); border-radius: var(--radius); transition: all .18s;
}
.dl-row + .dl-row { margin-top: 12px; }
.dl-row:hover { border-color: var(--brand); box-shadow: var(--shadow); }
.dl-ico { width: 44px; height: 44px; border-radius: 12px; flex: none; color: #fff;
          display: inline-flex; align-items: center; justify-content: center; }
.dl-main { flex: 1; min-width: 0; }
.dl-main h4 { font-size: 16px; margin-bottom: 4px; }
.dl-meta { font-size: 13px; color: var(--sub); display: flex; gap: 14px; flex-wrap: wrap; }
.dl-meta b { font-weight: 600; color: var(--text); }

.platform-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 22px; }
.ptab {
    padding: 9px 18px; border-radius: 999px; border: 1px solid var(--line-2); background: #fff;
    font-size: 14px; font-weight: 500; color: var(--text); display: inline-flex; align-items: center; gap: 7px;
}
.ptab:hover { border-color: var(--brand); color: var(--brand); }
.ptab.on { background: var(--ink); border-color: var(--ink); color: #fff; }
.ptab .cnt { opacity: .6; font-size: 12px; }

/* ---------------------------------------------------------------- 页面头 */
.page-head {
    background: linear-gradient(160deg, #fff5f2 0%, #fff 70%);
    border-bottom: 1px solid var(--line); padding: 44px 0 38px;
}
.page-head h1 { font-size: 34px; letter-spacing: -.8px; margin-bottom: 10px; }
.page-head p { color: var(--sub); font-size: 16px; max-width: 720px; margin: 0; }
.crumb { font-size: 13px; color: var(--sub); margin-bottom: 14px; }
.crumb a:hover { color: var(--brand); }
.crumb span { margin: 0 7px; opacity: .5; }

/* ---------------------------------------------------------------- 定价 */
.plans { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; align-items: stretch; }
.plan {
    position: relative; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
    padding: 28px 24px; display: flex; flex-direction: column; transition: all .2s;
}
.plan:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.plan.hot { border-color: var(--brand); box-shadow: 0 10px 30px rgba(224, 32, 32, .13); }
.plan-badge {
    position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
    padding: 5px 16px; border-radius: 999px; font-size: 12px; font-weight: 700; color: #fff;
    background: linear-gradient(135deg, var(--brand), var(--brand-2)); white-space: nowrap;
}
.plan h3 { font-size: 18px; margin-bottom: 6px; }
.plan .benefit { font-size: 13.5px; color: var(--sub); margin-bottom: 18px; min-height: 22px; }
.plan .price { font-size: 40px; font-weight: 800; color: var(--ink); letter-spacing: -1.6px; line-height: 1; }
.plan .price small { font-size: 17px; font-weight: 700; margin-right: 2px; }
.plan .price em { font-style: normal; font-size: 14px; color: var(--sub); font-weight: 500; letter-spacing: 0; }
.plan ul { list-style: none; padding: 0; margin: 20px 0; flex: 1; }
.plan li { display: flex; gap: 9px; align-items: flex-start; font-size: 14px; margin-bottom: 10px; color: var(--text); }
.plan li svg { flex: none; margin-top: 3px; }
.plan-note { font-size: 13px; color: var(--sub); margin-top: 14px; }

/* 套餐卡上的库存提示（只有开启库存卡密销售时才出现） */
.plan-stock { display: inline-block; margin: 14px 0 4px; padding: 4px 10px; border-radius: 20px;
              font-size: 12.5px; font-weight: 600; color: #0a7a41; background: #e8f7ef;
              border: 1px solid #c6ebd8; }
.plan-stock.out { color: #a31919; background: #fdecec; border-color: #f7cfcf; }

.pay-methods { display: flex; gap: 12px; justify-content: center; margin-top: 22px; flex-wrap: wrap; }
.pay-method {
    display: flex; align-items: center; gap: 10px; padding: 12px 20px; border-radius: 12px;
    border: 2px solid var(--line-2); background: #fff; cursor: pointer; font-weight: 600; font-size: 15px;
}
.pay-method.on { border-color: var(--brand); background: var(--brand-soft); }
.pay-method .pm-ico { width: 26px; height: 26px; border-radius: 7px; display: inline-flex;
                      align-items: center; justify-content: center; color: #fff; flex: none; }

/* ---------------------------------------------------------------- 表单 / 卡片 */
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 28px; }
.card + .card { margin-top: 18px; }
.card h2 { font-size: 20px; margin-bottom: 6px; }
.card h3 { font-size: 16px; margin-bottom: 14px; }
.card-head { display: flex; justify-content: space-between; align-items: center; gap: 16px;
             margin-bottom: 18px; flex-wrap: wrap; }
.card-head h2 { margin: 0; }

.form-row { margin-bottom: 16px; }
.form-row label { display: block; font-size: 14px; font-weight: 500; color: var(--text); margin-bottom: 7px; }
.form-row .hint { font-size: 12.5px; color: var(--sub); margin-top: 6px; }
input[type=text], input[type=password], input[type=email], input[type=number], input[type=tel],
select, textarea {
    width: 100%; padding: 11px 14px; font-size: 15px; font-family: inherit; color: var(--ink);
    background: #fff; border: 1px solid var(--line-2); border-radius: var(--radius-sm);
    outline: none; transition: all .15s;
}
input:focus, select:focus, textarea:focus {
    border-color: var(--brand); box-shadow: 0 0 0 3px rgba(224, 32, 32, .1);
}
textarea { min-height: 120px; resize: vertical; line-height: 1.7; }
.form-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
.checkbox { display: flex; align-items: center; gap: 9px; font-size: 14px; cursor: pointer; }
.checkbox input { width: auto; }

.alert { padding: 13px 18px; border-radius: var(--radius-sm); font-size: 14px; margin-bottom: 18px; }
.alert-ok { background: #eaf8ef; border: 1px solid #b8e6c9; color: #0a6e3b; }
.alert-err { background: #fdecec; border: 1px solid #f5c2c2; color: #a31919; }
.alert-info { background: #eef3ff; border: 1px solid #c8d7ff; color: #24458f; }
.alert-warn { background: #fff8e8; border: 1px solid #f5dfae; color: #8a5b00; }

/* ---------------------------------------------------------------- 表格 */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
table.data { width: 100%; border-collapse: collapse; font-size: 14px; }
table.data th, table.data td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--line);
                               white-space: nowrap; }
table.data th { background: #fafbfc; font-weight: 600; color: var(--sub); font-size: 13px; }
table.data tr:last-child td { border-bottom: 0; }
table.data tr:hover td { background: #fcfdfe; }
table.data td.wrap-cell { white-space: normal; min-width: 220px; }

.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge-ok { background: #eaf8ef; color: #0a6e3b; }
.badge-off { background: #f1f3f7; color: var(--sub); }
.badge-warn { background: #fff8e8; color: #8a5b00; }
.badge-err { background: #fdecec; color: #a31919; }
.badge-brand { background: var(--brand-soft); color: var(--brand); }

/* ---------------------------------------------------------------- 会员中心 */
.vip-layout { display: grid; grid-template-columns: 220px 1fr; gap: 24px; align-items: start; }
.vip-side { background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
            padding: 16px; position: sticky; top: calc(var(--header-h) + 16px); }
.vip-user { padding: 8px 10px 16px; border-bottom: 1px solid var(--line); margin-bottom: 12px; }
.vip-user b { display: block; font-size: 15px; color: var(--ink); word-break: break-all; }
.vip-user span { font-size: 13px; color: var(--sub); }
.vip-side a { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 9px;
              font-size: 14px; color: var(--text); font-weight: 500; }
.vip-side a:hover { background: var(--bg); }
.vip-side a.on { background: var(--brand-soft); color: var(--brand); font-weight: 700; }

.kpi-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 20px; }
.kpi { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; }
.kpi span { font-size: 13px; color: var(--sub); display: block; margin-bottom: 6px; }
.kpi b { font-size: 24px; font-weight: 800; color: var(--ink); letter-spacing: -.5px; }
.kpi b.sm { font-size: 17px; }

.card-key {
    border: 1px dashed var(--line-2); border-radius: var(--radius); padding: 18px 20px; background: #fcfdfe;
    display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
}
.card-key + .card-key { margin-top: 12px; }
.card-key .no { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 17px; font-weight: 700;
                letter-spacing: .5px; color: var(--ink); word-break: break-all; }
.card-key .meta { font-size: 13px; color: var(--sub); margin-top: 5px; }
.card-key .meta code { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 13px;
                       background: #eef2f8; border-radius: 4px; padding: 1px 6px; color: var(--ink); }

/* 卡密工具条：张数统计 + 复制全部 */
.card-tools { display: flex; align-items: center; justify-content: space-between;
              gap: 12px; flex-wrap: wrap; padding: 0 2px 16px; }

/* ---------------------------------------------------------------- 文章 */
.article { max-width: 820px; }
.article h1 { font-size: 30px; letter-spacing: -.6px; margin-bottom: 14px; }
.article-meta { color: var(--sub); font-size: 14px; margin-bottom: 28px;
                display: flex; gap: 16px; flex-wrap: wrap; }
.article-body { font-size: 16px; line-height: 1.9; color: var(--text); }
.article-body h3 { font-size: 19px; margin: 28px 0 12px; padding-left: 12px; border-left: 4px solid var(--brand); }
.article-body p { margin-bottom: 16px; }
.article-body li { margin-bottom: 8px; }
.article-body code { background: #f1f3f7; padding: 2px 7px; border-radius: 5px; font-size: 14px; }

.news-card { display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line);
             border-radius: var(--radius); overflow: hidden; transition: all .2s; height: 100%; }
.news-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.news-cover { height: 118px; background: var(--cover); display: flex; align-items: center;
              justify-content: center; color: #fff; }
.news-body { padding: 18px 20px 20px; display: flex; flex-direction: column; flex: 1; }
.news-body h3 { font-size: 16px; line-height: 1.5; margin-bottom: 9px; }
.news-body p { font-size: 13.5px; color: var(--sub); flex: 1; margin-bottom: 12px; }
.news-meta { font-size: 12.5px; color: var(--sub); display: flex; gap: 12px; }

/* ---------------------------------------------------------------- 页脚 */
.site-footer { background: #14181f; color: #a9b1bd; padding: 54px 0 0; margin-top: 0; font-size: 14px; }
.footer-top { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 32px; padding-bottom: 40px; }
.footer-brand .brand-logo { --logo-size: 38px; }
.footer-brand .brand-name { color: #fff; }
.site-footer h5 { color: #fff; font-size: 15px; margin-bottom: 16px; font-weight: 600; }
.site-footer a { display: block; padding: 5px 0; color: #a9b1bd; font-size: 14px; }
.site-footer a:hover { color: #fff; }
.footer-desc { margin-top: 16px; line-height: 1.8; font-size: 13.5px; max-width: 300px; }
.footer-contact div { padding: 5px 0; }
.footer-bottom { border-top: 1px solid #262c36; padding: 20px 0; display: flex;
                 justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 13px; }
.footer-links { display: flex; gap: 14px; flex-wrap: wrap; }
.footer-links a { display: inline; padding: 0; }
.footer-bottom .muted { color: #6b7480; }

/* ---------------------------------------------------------------- 通用小组件 */
.pagination { display: flex; gap: 8px; justify-content: center; margin-top: 32px; }
.pagination a, .pagination span {
    min-width: 38px; height: 38px; padding: 0 12px; border-radius: 9px; border: 1px solid var(--line-2);
    display: inline-flex; align-items: center; justify-content: center; font-size: 14px; background: #fff;
}
.pagination a:hover { border-color: var(--brand); color: var(--brand); }
.pagination .on { background: var(--ink); border-color: var(--ink); color: #fff; }

.empty { text-align: center; padding: 60px 20px; color: var(--sub); }
.empty svg { opacity: .35; margin-bottom: 14px; }

.toast {
    position: fixed; left: 50%; bottom: 34px; transform: translateX(-50%) translateY(16px);
    background: var(--ink); color: #fff; padding: 12px 24px; border-radius: 999px; font-size: 14px;
    opacity: 0; transition: all .24s; z-index: 200; pointer-events: none; box-shadow: var(--shadow-lg);
}
.toast.on { opacity: 1; transform: translateX(-50%) translateY(0); }

.copy-btn { background: #fff; border: 1px solid var(--line-2); border-radius: 8px; padding: 6px 14px;
            font-size: 13px; cursor: pointer; font-family: inherit; color: var(--text); }
.copy-btn:hover { border-color: var(--brand); color: var(--brand); }

.tabs { display: flex; gap: 6px; border-bottom: 1px solid var(--line); margin-bottom: 22px; flex-wrap: wrap; }
.tab { padding: 10px 18px; font-size: 15px; font-weight: 500; color: var(--sub); border-bottom: 2px solid transparent;
       margin-bottom: -1px; }
.tab:hover { color: var(--brand); }
.tab.on { color: var(--brand); border-bottom-color: var(--brand); font-weight: 700; }

/* 截图占位（产品详情） */
.shot { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #fff; }
.shot-visual { height: 190px; background: var(--cover); display: flex; align-items: center;
               justify-content: center; color: #fff; }
.shot-cap { padding: 14px 18px; }
.shot-cap b { display: block; font-size: 15px; color: var(--ink); }
.shot-cap span { font-size: 13px; color: var(--sub); }

.step { display: flex; gap: 16px; }
.step-no { width: 34px; height: 34px; border-radius: 50%; flex: none; display: inline-flex;
           align-items: center; justify-content: center; font-weight: 700; color: #fff; font-size: 15px;
           background: linear-gradient(135deg, var(--brand), var(--brand-2)); }
.step h4 { font-size: 16px; margin-bottom: 5px; }
.step p { font-size: 14px; color: var(--sub); margin: 0; }

.prose { font-size: 15.5px; line-height: 1.85; color: var(--text); }
.prose h3 { font-size: 20px; margin: 28px 0 12px; }
.prose h4 { font-size: 17px; margin: 22px 0 10px; }
.prose p { margin-bottom: 14px; }
.prose ul, .prose ol { margin-bottom: 16px; }
.prose li { margin-bottom: 7px; }
.prose table { width: 100%; border-collapse: collapse; font-size: 14px; margin: 18px 0; }
.prose th, .prose td { border: 1px solid var(--line); padding: 10px 13px; text-align: left; }
.prose th { background: #fafbfc; font-weight: 600; }
.prose code { font-size: .92em; }
.prose pre { background: #14181f; color: #e6e9ef; padding: 16px 18px; border-radius: var(--radius-sm);
             overflow-x: auto; font-size: 13px; line-height: 1.7; }
.prose pre code { background: none; color: inherit; padding: 0; }

/* ---------------------------------------------------------------- 响应式 */
@media (max-width: 1080px) {
    .hero-inner { grid-template-columns: 1fr; gap: 34px; padding: 48px 24px 56px; }
    .hero h1 { font-size: 36px; }
    .grid-4, .plans { grid-template-columns: repeat(2, 1fr); }
    .footer-top { grid-template-columns: 1fr 1fr; }
    .vip-layout { grid-template-columns: 1fr; }
    .vip-side { position: static; }
    .drop { min-width: 460px; grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 820px) {
    .nav-toggle { display: block; }
    .main-nav {
        display: none; position: absolute; top: 100%; left: 0; right: 0; background: #fff;
        border-bottom: 1px solid var(--line); flex-direction: column; align-items: stretch;
        padding: 12px; gap: 2px; box-shadow: var(--shadow-md); max-height: 76vh; overflow-y: auto;
    }
    .main-nav.open { display: flex; }
    .nav-item .drop { position: static; opacity: 1; visibility: visible; transform: none;
                      box-shadow: none; border: 0; padding: 6px 0 6px 12px; min-width: 0;
                      grid-template-columns: 1fr; display: none; }
    .nav-item.exp .drop { display: grid; }
    .header-actions .who { display: none; }
    .grid-3, .grid-2, .grid-4, .plans, .kpi-row { grid-template-columns: 1fr; }
    .fcard { grid-template-columns: 1fr; padding: 24px; }
    .fcard-visual { height: 160px; }
    .stats { grid-template-columns: repeat(2, 1fr); gap: 26px; }
    .section { padding: 46px 0; }
    .section-head h2, .page-head h1 { font-size: 26px; }
    .hero h1 { font-size: 30px; }
    .form-grid-2 { grid-template-columns: 1fr; }
    .float-card { display: none; }
    .article h1 { font-size: 24px; }
    .wrap { padding: 0 16px; }
    .brand-name { font-size: 18px; }
}
@media (max-width: 520px) {
    .footer-top { grid-template-columns: 1fr; }
    .hero-actions .btn { width: 100%; }
    .dl-row { flex-wrap: wrap; }
    table.data th, table.data td { padding: 10px 11px; font-size: 13px; }
}

/* 打印 */
@media print {
    .site-header, .site-footer, .hero-actions, .no-print { display: none !important; }
    body { font-size: 12pt; }
}

/* ---- 产品详情 · 界面预览（真实截图） ---- */
.shot-visual { overflow: hidden; }
.shot-visual a { display: block; width: 100%; height: 100%; }
.shot-visual img { display: block; width: 100%; height: 100%;
                   object-fit: cover; transition: transform .35s ease; }
.shot-visual a:hover img { transform: scale(1.04); }

/* ---------------------------------------------------------------- 按软件购买 */
.soft-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 26px; }
.soft-tabs a { padding: 8px 16px; border-radius: 20px; border: 1px solid var(--line-2);
               font-size: 14px; color: var(--sub); background: #fff; transition: all .18s; }
.soft-tabs a:hover { border-color: var(--brand); color: var(--brand); }
.soft-tabs a.on { background: var(--brand); border-color: var(--brand); color: #fff; font-weight: 600; }

.soft-block + .soft-block { margin-top: 46px; padding-top: 36px; border-top: 1px solid var(--line); }
.soft-block-head { display: flex; align-items: center; justify-content: space-between;
                   gap: 14px; flex-wrap: wrap; margin-bottom: 20px; }
.soft-block-head h2 { font-size: 21px; letter-spacing: -.3px; }

/* ---------------------------------------------------------------- 接口文档（后台 + 公开页共用） */
.doc-sec { background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
           margin-bottom: 20px; overflow: hidden; }
.doc-sec-head { display: flex; align-items: center; gap: 12px; padding: 16px 22px;
                border-bottom: 1px solid var(--line); background: #fcfdfe; flex-wrap: wrap; }
.doc-sec-head h2 { font-size: 16px; margin: 0; letter-spacing: -.2px; }
.doc-sec-head .sp { margin-left: auto; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.doc-sec-body { padding: 22px; }
.doc-h3 { font-size: 15px; margin: 0 0 10px; }
.doc-sec-body > .doc-h3 + * { margin-top: 0; }
.doc-sec-body > * + .doc-h3 { margin-top: 24px; }
.doc-muted { color: var(--sub); font-size: 14px; }
.doc-hint { color: var(--sub); font-size: 12.5px; margin-top: 4px; }
.doc-ul { margin: 8px 0 0; padding-left: 20px; }
.doc-ul li { margin: 4px 0; }

.doc-kv { display: grid; grid-template-columns: 158px 1fr; gap: 11px 16px; font-size: 14px;
          align-items: baseline; margin: 0; }
.doc-kv dt { color: var(--sub); }
.doc-kv dd { margin: 0; }
.doc-kv code { background: #f5f7fa; border: 1px solid var(--line); border-radius: 6px;
               padding: 2px 7px; font-size: 13px; word-break: break-all; }

.doc-note { margin-top: 16px; padding: 12px 16px; border-radius: 10px; background: #f7fbff;
            border: 1px solid #d8e8fb; font-size: 13.5px; color: #26527f; }
.doc-alert { margin-top: 16px; padding: 13px 16px; border-radius: 10px; font-size: 13.5px;
             background: #fff8ee; border: 1px solid #f6ddb8; color: #8a5a10; }
.doc-alert-info { background: #f4f9ff; border-color: #d3e6fb; color: #26527f; }

.doc-table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 10px; }
.doc-table-wrap table.data { min-width: 520px; }
table.doc-table { font-size: 13.5px; }
table.doc-table th, table.doc-table td { padding: 9px 13px; }
table.doc-table th { font-size: 12.5px; white-space: nowrap; }
table.doc-table tr:last-child td { border-bottom: 0; }
.doc-scroll { max-height: 420px; overflow-y: auto; }

.doc-code { background: #14181f; color: #e6e9ef; padding: 16px 18px; border-radius: 10px;
            overflow-x: auto; font-family: ui-monospace, Menlo, Consolas, monospace;
            font-size: 13px; line-height: 1.75; white-space: pre; margin: 0; }
.doc-code-sm { font-size: 12px; }
.doc-code .k { color: #ff9d7a; }
.doc-code .s { color: #9ae6a8; }
.doc-code .c { color: #7d8798; }

.doc-two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.doc-modes { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 14px 0 0; }
.doc-mode { border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; background: #fcfdfe; }
.doc-mode-head { display: flex; align-items: center; gap: 8px; font-weight: 600; font-size: 14.5px;
                 margin-bottom: 8px; }
.doc-mode .doc-ul { font-size: 13.5px; color: var(--text); }

.doc-api { border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px; margin-bottom: 14px; }
.doc-api:last-child { margin-bottom: 0; }
.doc-api-head { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; flex-wrap: wrap; }
.doc-api-head b { font-size: 15px; }
.doc-api-desc { font-size: 13.5px; margin: 0 0 12px; }
.doc-api .doc-table-wrap { margin-bottom: 12px; }

.doc-faq { color: var(--text); font-size: 14px; }
.doc-faq p { margin: 0 0 14px; }
.doc-faq p:last-child { margin-bottom: 0; }

/* 公开文档页的头部与目录 */
.doc-hero { padding: 52px 0 34px; background: linear-gradient(180deg, #fbfcfe, #fff); border-bottom: 1px solid var(--line); }
.doc-hero h1 { font-size: 32px; margin: 0 0 12px; letter-spacing: -.6px; }
.doc-hero p { color: var(--sub); font-size: 15.5px; margin: 0; max-width: 720px; }
.doc-hero .doc-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 18px; }
.doc-hero .doc-tags span { font-size: 12.5px; color: var(--sub); background: #fff;
                           border: 1px solid var(--line-2); border-radius: 20px; padding: 4px 12px; }
.doc-toc { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 24px; }
.doc-toc a { font-size: 13.5px; color: var(--sub); background: #fff; border: 1px solid var(--line-2);
             border-radius: 20px; padding: 6px 14px; transition: all .18s; }
.doc-toc a:hover { color: var(--brand); border-color: var(--brand); }

@media (max-width: 900px) {
    .doc-two-col, .doc-modes { grid-template-columns: 1fr; }
    .doc-kv { grid-template-columns: 1fr; gap: 4px 0; }
    .doc-kv dd { margin-bottom: 10px; }
    .doc-hero { padding: 34px 0 24px; }
    .doc-hero h1 { font-size: 25px; }
    .doc-sec-body { padding: 18px 16px; }
}