/* ==========================================================================
   轻简响应式IDC模板 · 基础与前台样式
   移动优先，无第三方依赖；断点 1080 / 860 / 620
   ========================================================================== */

:root {
  --c-primary: #1f5eff;
  --c-primary-dark: #1348d6;
  --c-primary-soft: #eaf0ff;
  --c-ink: #17222e;
  --c-body: #4b5866;
  --c-muted: #8792a0;
  --c-line: #e3e8ef;
  --c-line-strong: #cfd7e2;
  --c-bg: #ffffff;
  --c-bg-soft: #f5f7fb;
  --c-ok: #12a05a;
  --c-warn: #d98200;
  --c-bad: #dc3b3b;
  --c-info: #1f7fe8;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 1px 2px rgba(23, 34, 46, .04), 0 8px 24px rgba(23, 34, 46, .06);
  --shadow-hover: 0 2px 4px rgba(23, 34, 46, .06), 0 14px 34px rgba(31, 94, 255, .12);
  --gap: 20px;
  --container: 1180px;
  --header-h: 64px;
}

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

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

body {
  margin: 0;
  color: var(--c-body);
  background: var(--c-bg);
  font: 400 15px/1.7 "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

h1, h2, h3, h4, p, ul, ol, dl, figure { margin: 0; padding: 0; }
ul, ol { list-style: none; }
a { color: inherit; text-decoration: none; transition: color .15s ease; }
a:hover { color: var(--c-primary); }
img, svg { max-width: 100%; display: block; }
strong, b { font-weight: 600; color: var(--c-ink); }
i, em { font-style: normal; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 20px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.todo { color: var(--c-muted); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  height: 38px; padding: 0 18px; border: 1px solid transparent; border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 500; line-height: 1; cursor: pointer; white-space: nowrap;
  transition: color .15s ease, background-color .15s ease, border-color .15s ease;
}
.btn-primary { background: var(--c-primary); color: #fff; }
.btn-primary:hover { background: var(--c-primary-dark); color: #fff; }
.btn-line { border-color: var(--c-line-strong); color: var(--c-ink); background: #fff; }
.btn-line:hover { border-color: var(--c-primary); color: var(--c-primary); }
.btn-ghost { color: var(--c-ink); }
.btn-ghost:hover { color: var(--c-primary); }
.btn-invert { background: #fff; color: var(--c-primary); }
.btn-invert:hover { background: var(--c-primary-soft); color: var(--c-primary-dark); }
.btn-sm { height: 30px; padding: 0 12px; font-size: 13px; }
.btn-lg { height: 44px; padding: 0 26px; font-size: 15px; }
.btn-block { display: flex; width: 100%; }
.btn[disabled] { opacity: .55; cursor: not-allowed; }

/* ---------- 标签与状态 ---------- */
.tag {
  display: inline-block; padding: 1px 8px; border-radius: 4px; font-size: 12px;
  color: var(--c-body); background: var(--c-bg-soft); border: 1px solid var(--c-line);
}
.tag-lg { font-size: 13px; padding: 3px 12px; }
.tag-host { color: #1f7fe8; background: #eaf4ff; border-color: #d6e9ff; }
.tag-vps { color: #6b47e0; background: #f0ecff; border-color: #e0d8ff; }
.tag-dedi { color: #0f7d68; background: #e6f7f2; border-color: #cdeee5; }
.tag-cdn { color: #b4610b; background: #fff4e6; border-color: #ffe4c2; }
.tag-in { color: var(--c-ok); background: #eaf8f1; border-color: #cdefdd; }
.tag-out { color: var(--c-warn); background: #fff7e9; border-color: #ffe6bd; }

.pill {
  display: inline-flex; align-items: center; gap: 5px; padding: 2px 10px; border-radius: 999px;
  font-size: 12px; color: var(--c-muted); background: #f1f3f7;
}
.pill::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; opacity: .8; }
.pill-ok { color: var(--c-ok); background: #eaf8f1; }
.pill-warn { color: var(--c-warn); background: #fff6e8; }
.pill-bad { color: var(--c-bad); background: #fdeeef; }
.pill-info { color: var(--c-info); background: #eaf3fd; }
.pill-lg { font-size: 13px; padding: 4px 14px; }

/* ---------- 表单 ---------- */
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 16px; }
.form-row { margin-bottom: 16px; }
.form-label { display: block; margin-bottom: 6px; font-size: 13px; color: var(--c-ink); font-weight: 500; }
.form-label .req { color: var(--c-bad); margin-left: 2px; }
.form-control {
  width: 100%; height: 40px; padding: 0 12px; color: var(--c-ink); font-size: 14px;
  background: #fff; border: 1px solid var(--c-line-strong); border-radius: var(--radius-sm);
  transition: border-color .15s ease, box-shadow .15s ease;
}
textarea.form-control { height: auto; padding: 10px 12px; line-height: 1.6; resize: vertical; }
select.form-control { padding-right: 30px; appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--c-muted) 50%), linear-gradient(135deg, var(--c-muted) 50%, transparent 50%);
  background-position: calc(100% - 16px) 18px, calc(100% - 11px) 18px; background-size: 5px 5px, 5px 5px; background-repeat: no-repeat; }
.form-control:focus { outline: none; border-color: var(--c-primary); box-shadow: 0 0 0 3px rgba(31, 94, 255, .12); }
.form-control[readonly] { background: var(--c-bg-soft); color: var(--c-muted); }
.form-tip { margin-top: 6px; font-size: 12px; color: var(--c-muted); line-height: 1.6; }
.form-check { display: inline-flex; align-items: center; gap: 7px; font-size: 13px; color: var(--c-body); cursor: pointer; }
.form-check input { width: 15px; height: 15px; accent-color: var(--c-primary); }
.form-row-between { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.form-row-inline { display: flex; align-items: flex-end; gap: 10px; }
.form-row-inline .grow { flex: 1; min-width: 0; }
.form-row-inline .side-fixed { min-width: 140px; }
.form-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 6px; }
.form-link { font-size: 13px; color: var(--c-primary); }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50; height: var(--header-h);
  background: rgba(255, 255, 255, .96); border-bottom: 1px solid var(--c-line);
  backdrop-filter: saturate(140%) blur(6px);
}
.header-inner { display: flex; align-items: center; gap: 24px; height: var(--header-h); }
.brand { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.brand-logo { height: 26px; width: auto; }
.brand-text { font-size: 18px; font-weight: 700; color: var(--c-ink); letter-spacing: .5px; }
.site-nav { display: flex; align-items: center; gap: 4px; flex: 1; }
.nav-item { display: inline-flex; align-items: center; height: 40px; padding: 0 12px; font-size: 15px; color: var(--c-ink); border-radius: var(--radius-sm); }
.nav-item:hover, .nav-item.is-active { color: var(--c-primary); background: var(--c-primary-soft); }
.nav-group { position: relative; display: flex; align-items: center; }
.nav-menu {
  position: absolute; top: 100%; left: 0; display: none; min-width: 208px; padding: 8px;
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); box-shadow: var(--shadow);
}
.nav-group:hover .nav-menu, .nav-group:focus-within .nav-menu { display: block; }
.nav-menu a { display: block; padding: 8px 10px; border-radius: var(--radius-sm); }
.nav-menu a:hover { background: var(--c-bg-soft); }
.nav-menu b { display: block; font-size: 14px; }
.nav-menu i { display: block; font-size: 12px; color: var(--c-muted); }
.header-actions { display: flex; align-items: center; gap: 10px; margin-left: auto; }
.user-chip { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; color: var(--c-ink); }
.user-chip .money { font-size: 13px; color: var(--c-primary); }

.nav-toggle { display: none; width: 40px; height: 36px; padding: 8px 9px; background: none; border: 1px solid var(--c-line); border-radius: var(--radius-sm); cursor: pointer; }
.nav-toggle span { display: block; height: 2px; margin: 3px 0; background: var(--c-ink); border-radius: 2px; }

/* ---------- 首页 Hero ---------- */
.hero { padding: 52px 0 60px; background: linear-gradient(180deg, #f2f6ff 0%, #ffffff 78%); border-bottom: 1px solid var(--c-line); }
.hero-inner { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: 40px; align-items: center; }
.hero-eyebrow { font-size: 13px; color: var(--c-primary); font-weight: 500; margin-bottom: 14px; }
.hero-title { font-size: 40px; line-height: 1.24; font-weight: 700; color: var(--c-ink); letter-spacing: -.5px; }
.hero-desc { margin-top: 16px; font-size: 16px; max-width: 34em; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 26px; }
.hero-stats { display: flex; gap: 28px; flex-wrap: wrap; margin-top: 30px; padding-top: 22px; border-top: 1px dashed var(--c-line-strong); }
.hero-stats li b { display: block; font-size: 22px; color: var(--c-ink); }
.hero-stats li i { font-size: 13px; color: var(--c-muted); }

.hero-panel { background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px 22px; }
.hero-panel-head { display: flex; align-items: center; gap: 8px; font-size: 15px; font-weight: 600; color: var(--c-ink); padding-bottom: 12px; border-bottom: 1px solid var(--c-line); }
.hero-panel-head span { width: 8px; height: 8px; border-radius: 50%; background: var(--c-ok); }
.hero-panel-list li { display: flex; align-items: center; justify-content: space-between; padding: 11px 0; border-bottom: 1px dashed var(--c-line); }
.hero-panel-list li:last-child { border-bottom: none; }
.hero-panel-list i { color: var(--c-ink); font-size: 14px; }
.hero-panel-foot { margin-top: 12px; font-size: 12px; color: var(--c-muted); }

/* ---------- 通用区块 ---------- */
.section { padding: 62px 0; }
.section-soft { background: var(--c-bg-soft); border-top: 1px solid var(--c-line); border-bottom: 1px solid var(--c-line); }
.section-head { margin-bottom: 30px; }
.section-between { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.section-title { font-size: 28px; font-weight: 700; color: var(--c-ink); line-height: 1.35; }
.section-sub { margin-top: 8px; font-size: 15px; color: var(--c-muted); max-width: 46em; }

.grid { display: grid; gap: var(--gap); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* ---------- 步骤条 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; counter-reset: step; }
.steps li { position: relative; padding: 18px 18px 18px 20px; background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); }
.steps li + li::before { content: ""; position: absolute; left: -10px; top: 50%; width: 10px; height: 1px; background: var(--c-line-strong); }
.step-no { display: inline-flex; align-items: center; justify-content: center; width: 24px; height: 24px; margin-bottom: 10px; font-size: 13px; font-weight: 600; color: #fff; background: var(--c-primary); border-radius: 50%; }
.steps b { display: block; font-size: 16px; margin-bottom: 4px; }
.steps i { font-size: 13px; color: var(--c-muted); }
.steps-section { padding: 34px 0; }

/* ---------- 产品线卡片 ---------- */
.line-card { display: block; padding: 24px 22px; background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); box-shadow: var(--shadow); transition: box-shadow .15s ease, transform .15s ease, border-color .15s ease; }
.line-card:hover { border-color: #c9d8ff; box-shadow: var(--shadow-hover); }
.line-card b { display: block; font-size: 17px; margin-bottom: 8px; }
.line-card i { display: block; font-size: 14px; color: var(--c-muted); line-height: 1.7; }
.line-card .more { display: block; margin-top: 14px; font-size: 13px; color: var(--c-primary); }
.line-card-sm { padding: 18px; }
.line-icon { display: block; width: 34px; height: 34px; margin-bottom: 14px; border-radius: 8px; background: var(--c-primary-soft) no-repeat center / 20px 20px; }
.icon-host { background-image: url("../images/ic-host.svg"); }
.icon-vps { background-image: url("../images/ic-vps.svg"); }
.icon-dedi { background-image: url("../images/ic-dedi.svg"); }
.icon-cdn { background-image: url("../images/ic-cdn.svg"); }

/* ---------- 产品卡 ---------- */
.p-card { display: flex; flex-direction: column; padding: 22px; background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); box-shadow: var(--shadow); }
.p-card-head { display: flex; gap: 8px; margin-bottom: 12px; }
.p-tag { font-size: 12px; color: var(--c-primary); background: var(--c-primary-soft); border-radius: 4px; padding: 1px 8px; }
.p-tag-hot { color: #b4610b; background: #fff4e6; }
.p-name { font-size: 18px; color: var(--c-ink); font-weight: 600; }
.p-desc { margin-top: 8px; font-size: 14px; color: var(--c-muted); flex: 1; }
.p-card-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 18px; padding-top: 16px; border-top: 1px dashed var(--c-line-strong); }
.p-price { color: var(--c-primary); font-weight: 700; font-size: 22px; }
.p-price i { font-size: 14px; }
.p-price em { font-size: 12px; font-weight: 400; color: var(--c-muted); margin-left: 2px; }

.feature-grid { gap: 14px; }
.feature { padding: 20px; background: var(--c-bg-soft); border-radius: var(--radius); border: 1px solid var(--c-line); }
.feature b { display: block; font-size: 16px; margin-bottom: 6px; }
.feature i { font-size: 14px; color: var(--c-muted); }

/* ---------- 新闻 ---------- */
.news-grid { gap: 22px; }
.news-col { background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); padding: 18px 20px; }
.news-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 12px; border-bottom: 1px solid var(--c-line); margin-bottom: 6px; }
.news-head b { font-size: 16px; }
.news-head a { font-size: 13px; color: var(--c-primary); }
.news-list li { display: flex; gap: 14px; align-items: baseline; padding: 10px 0; border-bottom: 1px dashed var(--c-line); }
.news-list li:last-child { border-bottom: none; }
.news-date { font-size: 12px; color: var(--c-muted); flex-shrink: 0; font-variant-numeric: tabular-nums; }
.news-list a { font-size: 14px; color: var(--c-ink); }
.news-empty { color: var(--c-muted); font-size: 13px; }

/* ---------- 会员等级 ---------- */
.level { padding: 20px; text-align: center; background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); }
.level b { display: block; font-size: 16px; }
.level i { display: block; margin: 8px 0 10px; font-size: 13px; color: var(--c-muted); }
.level em { display: inline-block; font-size: 18px; font-weight: 700; color: var(--c-primary); }
.level-grid { gap: 14px; }
.level-note { margin-top: 16px; font-size: 13px; color: var(--c-muted); }

/* ---------- CTA ---------- */
.cta-band { background: linear-gradient(120deg, var(--c-primary) 0%, #4b7bff 60%, #6d5cff 100%); color: #fff; padding: 46px 0; }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.cta-inner h2 { font-size: 24px; font-weight: 700; color: #fff; }
.cta-inner p { margin-top: 6px; color: rgba(255, 255, 255, .85); font-size: 14px; }

/* ---------- 页头 / 面包屑 ---------- */
.page-head { padding: 36px 0 26px; background: var(--c-bg-soft); border-bottom: 1px solid var(--c-line); }
.page-head-sm { padding: 28px 0 22px; }
.page-title { font-size: 28px; font-weight: 700; color: var(--c-ink); line-height: 1.35; }
.page-title-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.page-sub { margin-top: 8px; font-size: 14px; color: var(--c-muted); max-width: 60em; }
.crumb { font-size: 13px; color: var(--c-muted); margin-bottom: 12px; }
.crumb a { color: var(--c-muted); }
.crumb a:hover { color: var(--c-primary); }
.crumb span { margin: 0 8px; color: var(--c-line-strong); }

/* ---------- 类型 tab / 筛选 ---------- */
.type-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin: 24px 0 18px; }
.type-tab { padding: 7px 16px; font-size: 14px; color: var(--c-body); background: #fff; border: 1px solid var(--c-line); border-radius: 999px; }
.type-tab:hover { color: var(--c-primary); border-color: #c9d8ff; }
.type-tab.is-active { color: #fff; background: var(--c-primary); border-color: var(--c-primary); }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.data-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.data-table th, .data-table td { padding: 13px 14px; text-align: left; border-bottom: 1px solid var(--c-line); vertical-align: middle; }
.data-table thead th { font-size: 13px; font-weight: 600; color: var(--c-muted); background: var(--c-bg-soft); white-space: nowrap; }
.data-table tbody tr:hover { background: #fafbfe; }
.data-table .col-op { text-align: right; white-space: nowrap; }
.data-table .col-op .btn { margin-left: 6px; }
.t-name { font-weight: 600; color: var(--c-ink); }
.t-desc { color: var(--c-muted); font-size: 13px; max-width: 34em; }
.t-price { color: var(--c-primary); font-weight: 600; }
.t-price i { font-size: 12px; }
.t-price em { font-size: 12px; font-style: normal; color: var(--c-muted); font-weight: 400; }
.t-link { color: var(--c-primary); }
.t-code { display: inline-block; margin-left: 6px; font-size: 12px; color: var(--c-muted); font-variant-numeric: tabular-nums; }
.t-remark { display: block; font-size: 12px; color: var(--c-muted); }
.t-mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px; }
.t-money { font-variant-numeric: tabular-nums; }
.t-money.plus { color: var(--c-ok); }
.t-money.minus { color: var(--c-bad); }
.t-fee { display: block; font-size: 12px; color: var(--c-muted); }
.t-product { display: flex; flex-direction: column; gap: 2px; }
.t-item { font-size: 13px; color: var(--c-ink); }
.t-item i { color: var(--c-muted); margin-left: 4px; }

/* ---------- 详情 / 购买页 ---------- */
.detail-wrap { display: grid; grid-template-columns: minmax(0, 1fr) 328px; gap: 24px; align-items: start; padding: 24px 20px 60px; }
.detail-main { min-width: 0; }
.panel { background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); padding: 20px 22px; margin-bottom: 16px; }
.panel-title { font-size: 16px; font-weight: 600; color: var(--c-ink); padding-bottom: 14px; margin-bottom: 14px; border-bottom: 1px solid var(--c-line); }
.panel-note { margin-top: 12px; font-size: 12px; color: var(--c-muted); }
.panel + .panel { margin-top: 0; }

.opt-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; }
.opt-list-period { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
.opt-list-inline { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); }
.opt-opt { position: relative; display: block; cursor: pointer; }
.opt-opt input { position: absolute; opacity: 0; width: 0; height: 0; }
.opt-body { display: block; padding: 12px 14px; border: 1px solid var(--c-line-strong); border-radius: var(--radius-sm); background: #fff; transition: border-color .15s ease, background-color .15s ease; }
.opt-opt:hover .opt-body { border-color: #b9cfff; }
.opt-opt input:checked + .opt-body { border-color: var(--c-primary); background: var(--c-primary-soft); box-shadow: inset 0 0 0 1px var(--c-primary); }
.opt-body b { display: block; font-size: 14px; }
.opt-price { display: block; margin-top: 4px; font-size: 15px; color: var(--c-primary); font-weight: 600; }
.opt-price i { font-size: 12px; }
.opt-fee { display: block; margin-top: 2px; font-size: 12px; color: var(--c-warn); }
.opt-chip { display: inline-flex; align-items: center; gap: 6px; padding: 7px 12px; border: 1px solid var(--c-line-strong); border-radius: var(--radius-sm); font-size: 13px; cursor: pointer; }
.opt-chip input { accent-color: var(--c-primary); }
.opt-chip.is-checked, .opt-chip:has(input:checked) { border-color: var(--c-primary); background: var(--c-primary-soft); }

.opt-groups { display: flex; flex-direction: column; gap: 16px; }
.opt-group { padding: 14px 16px; background: var(--c-bg-soft); border-radius: var(--radius-sm); border: 1px solid var(--c-line); }
.opt-group-head { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
.opt-group-head b { font-size: 14px; }
.opt-unit { font-size: 12px; color: var(--c-muted); }
.opt-slider { display: flex; align-items: center; gap: 10px; }
.range-input { flex: 1; accent-color: var(--c-primary); height: 4px; }
.qty-btn { width: 30px; height: 30px; flex-shrink: 0; font-size: 16px; line-height: 1; color: var(--c-ink); background: #fff; border: 1px solid var(--c-line-strong); border-radius: var(--radius-sm); cursor: pointer; }
.qty-btn:hover { border-color: var(--c-primary); color: var(--c-primary); }
.qty-value { min-width: 42px; text-align: right; font-weight: 600; color: var(--c-ink); font-variant-numeric: tabular-nums; }
.opt-stepper { display: flex; align-items: center; gap: 8px; }
.opt-stepper .qty-input { width: 110px; }
.opt-fixed { display: flex; gap: 8px; flex-wrap: wrap; }
.inline-empty { padding: 14px 16px; font-size: 13px; color: var(--c-muted); background: var(--c-bg-soft); border: 1px dashed var(--c-line-strong); border-radius: var(--radius-sm); }

.spec-table { margin-top: 6px; border-top: 1px dashed var(--c-line); }
.spec-row { display: grid; grid-template-columns: 88px minmax(0, 1fr) 88px minmax(0, 1fr); gap: 8px; padding: 10px 0; font-size: 13px; border-bottom: 1px dashed var(--c-line); }
.spec-row i { color: var(--c-muted); }
.dot-list { display: flex; flex-direction: column; gap: 8px; }
.dot-list li { position: relative; padding-left: 16px; font-size: 14px; }
.dot-list li::before { content: ""; position: absolute; left: 2px; top: 9px; width: 5px; height: 5px; border-radius: 50%; background: var(--c-primary); opacity: .55; }
.dot-list-sm li { font-size: 13px; }
.kv-list { display: flex; flex-direction: column; }
.kv-list li { display: flex; justify-content: space-between; gap: 12px; padding: 9px 0; font-size: 13px; border-bottom: 1px dashed var(--c-line); }
.kv-list li:last-child { border-bottom: none; }
.kv-list i { color: var(--c-muted); }
.kv-list b { text-align: right; }

.buy-aside { position: relative; }
.buy-form { display: flex; flex-direction: column; gap: 14px; position: sticky; top: calc(var(--header-h) + 16px); }
.buy-card { padding: 20px; background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); box-shadow: var(--shadow); }
.buy-card-plain h3 { font-size: 15px; margin-bottom: 6px; }
.buy-card-head { font-size: 14px; color: var(--c-muted); margin-bottom: 8px; }
.buy-total { display: flex; align-items: baseline; gap: 2px; color: var(--c-primary); font-weight: 700; font-size: 34px; line-height: 1.1; }
.buy-total i { font-size: 16px; }
.buy-total span { margin-left: 6px; font-size: 13px; font-weight: 400; color: var(--c-muted); }
.buy-lines { margin: 14px 0; font-size: 13px; }
.buy-lines li { display: flex; justify-content: space-between; gap: 10px; padding: 6px 0; border-bottom: 1px dashed var(--c-line); color: var(--c-body); }
.buy-lines li:last-child { border-bottom: none; }
.buy-tip { font-size: 12px; color: var(--c-muted); margin-bottom: 14px; }
.buy-foot { margin-top: 8px; font-size: 12px; color: var(--c-muted); }
.buy-form .btn + .btn { margin-top: 8px; }

/* ---------- 文章 ---------- */
.article-wrap { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 24px; align-items: start; padding: 26px 20px 60px; }
.article-list { display: flex; flex-direction: column; }
.article-item { padding: 20px 0; border-bottom: 1px solid var(--c-line); }
.article-item:first-child { padding-top: 6px; }
.article-title { font-size: 18px; font-weight: 600; color: var(--c-ink); }
.article-title:hover { color: var(--c-primary); }
.article-sum { margin-top: 6px; font-size: 14px; color: var(--c-muted); }
.article-meta { display: flex; gap: 14px; align-items: center; margin-top: 8px; font-size: 12px; color: var(--c-muted); }
.article-title-lg { max-width: 42em; }
.article-body-wrap { background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); padding: 24px 26px; }
.article-body { font-size: 15px; color: var(--c-body); }
.article-body h2, .article-body h3 { margin: 22px 0 10px; color: var(--c-ink); }
.article-body p { margin-bottom: 14px; }
.article-body img { border-radius: var(--radius-sm); margin: 14px 0; }
.article-body ul { list-style: disc; padding-left: 22px; margin-bottom: 14px; }
.article-body pre { overflow-x: auto; padding: 14px; background: var(--c-bg-soft); border-radius: var(--radius-sm); font-size: 13px; }
.article-foot { display: flex; gap: 10px; margin-top: 24px; padding-top: 18px; border-top: 1px solid var(--c-line); }
.article-rel { display: flex; flex-direction: column; gap: 8px; margin-top: 16px; }
.rel-item { display: flex; gap: 10px; font-size: 13px; }
.rel-item i { color: var(--c-muted); flex-shrink: 0; }

.article-side { display: flex; flex-direction: column; gap: 16px; }
.side-card { background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); padding: 18px 20px; }
.side-card h3 { font-size: 15px; margin-bottom: 12px; }
.side-list li { padding: 8px 0; border-bottom: 1px dashed var(--c-line); font-size: 14px; }
.side-list li:last-child { border-bottom: none; }
.side-text { font-size: 13px; color: var(--c-muted); margin-bottom: 14px; }
.side-card .btn + .btn { margin-top: 8px; }

/* ---------- 分页 / 空状态 ---------- */
.pagination { display: flex; gap: 8px; align-items: center; justify-content: center; flex-wrap: wrap; margin-top: 24px; font-size: 14px; }
.pagination a, .pagination span { display: inline-flex; align-items: center; justify-content: center; min-width: 34px; height: 34px; padding: 0 10px; border: 1px solid var(--c-line); border-radius: var(--radius-sm); color: var(--c-body); background: #fff; }
.pagination a:hover { border-color: var(--c-primary); color: var(--c-primary); }
.pagination .current, .pagination .page-cur { border-color: var(--c-primary); background: var(--c-primary); color: #fff; }
.pagination .disabled { color: var(--c-line-strong); }

.empty-state { padding: 46px 20px; text-align: center; color: var(--c-muted); }
.empty-state img { width: 96px; margin: 0 auto 14px; opacity: .9; }
.empty-state p { font-size: 15px; color: var(--c-ink); }
.empty-tip { margin-top: 8px; font-size: 13px !important; color: var(--c-muted) !important; }
.empty-tip a { color: var(--c-primary); }

/* ---------- 登录注册 ---------- */
.auth-wrap { display: flex; justify-content: center; padding: 54px 20px 70px; background: var(--c-bg-soft); min-height: calc(100vh - var(--header-h)); }
.auth-box { display: grid; grid-template-columns: 320px minmax(0, 1fr); width: 100%; max-width: 900px; background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); align-self: flex-start; }
.auth-box-narrow { grid-template-columns: minmax(0, 1fr); max-width: 520px; }
.auth-side { padding: 30px 28px; background: linear-gradient(160deg, #13306e 0%, #1f5eff 100%); color: #fff; }
.auth-side h2 { font-size: 22px; color: #fff; }
.auth-side p { margin-top: 12px; font-size: 14px; color: rgba(255, 255, 255, .82); }
.auth-points { margin-top: 20px; display: flex; flex-direction: column; gap: 10px; }
.auth-points li { position: relative; padding-left: 18px; font-size: 13px; color: rgba(255, 255, 255, .9); }
.auth-points li::before { content: ""; position: absolute; left: 0; top: 7px; width: 8px; height: 8px; border-radius: 2px; background: rgba(255, 255, 255, .55); }
.auth-side-foot { margin-top: 26px; font-size: 13px; }
.auth-side-foot a { color: #fff; text-decoration: underline; }
.auth-form { padding: 30px 32px; }
.auth-title { font-size: 22px; font-weight: 700; color: var(--c-ink); margin-bottom: 20px; }
.auth-desc { margin-top: -10px; margin-bottom: 18px; font-size: 13px; color: var(--c-muted); }
.auth-alt { margin-top: 16px; font-size: 13px; color: var(--c-muted); text-align: center; }
.auth-alt a { color: var(--c-primary); }
#sendCode { height: 40px; margin-bottom: 0; }

/* ---------- 页脚 ---------- */
.site-footer { background: #0f1a2b; color: #9fb0c6; padding: 46px 0 26px; margin-top: 8px; }
.footer-top { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 2fr); gap: 40px; padding-bottom: 30px; border-bottom: 1px solid rgba(255, 255, 255, .08); }
.footer-brand .brand-logo { height: 26px; margin-bottom: 14px; }
.footer-slogan { font-size: 14px; line-height: 1.8; max-width: 30em; }
.footer-contact { margin-top: 14px; font-size: 13px; }
.footer-contact li { padding: 3px 0; }
.footer-contact a { color: #cfe0f7; }
.footer-cols { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.footer-col h4 { font-size: 14px; color: #fff; margin-bottom: 12px; }
.footer-col a { display: block; padding: 4px 0; font-size: 13px; color: #9fb0c6; }
.footer-col a:hover { color: #fff; }
.footer-note { padding-top: 20px; font-size: 12px; }
.disclaim { color: #7f8ea3; line-height: 1.8; }
.footer-links { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; margin: 14px 0; }
.footer-links a { color: #9fb0c6; }
.copyright { color: #7f8ea3; }
.copyright a { color: #9fb0c6; }

/* ---------- 悬浮工具条 ---------- */
.float-bar { position: fixed; right: 14px; bottom: 84px; z-index: 40; display: flex; flex-direction: column; gap: 2px;
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius-sm); box-shadow: var(--shadow); overflow: hidden; }
.float-item { display: flex; flex-direction: column; align-items: center; justify-content: center; width: 52px; height: 52px; font-size: 12px; color: var(--c-body); background: none; border: none; cursor: pointer; border-bottom: 1px solid var(--c-line); }
.float-item:last-child { border-bottom: none; }
.float-item:hover { color: var(--c-primary); background: var(--c-primary-soft); }
.to-top { display: none; }
body.is-scrolled .to-top { display: flex; }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .detail-wrap, .article-wrap { grid-template-columns: minmax(0, 1fr); }
  .buy-aside, .article-side { order: -1; }
  .buy-form { position: static; flex-direction: row; flex-wrap: wrap; }
  .buy-form .buy-card { flex: 1; min-width: 260px; }
  .hero-inner { grid-template-columns: minmax(0, 1fr); }
  .hero-panel { max-width: 460px; }
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps li + li::before { display: none; }
}

@media (max-width: 860px) {
  .site-header { height: auto; position: sticky; }
  .header-inner { flex-wrap: wrap; height: auto; padding: 12px 20px; gap: 12px; }
  .nav-toggle { display: block; margin-left: auto; }
  .header-actions { margin-left: auto; }
  .site-nav { display: none; width: 100%; flex-direction: column; align-items: stretch; gap: 0; padding-bottom: 10px; border-top: 1px solid var(--c-line); }
  body.nav-open .site-nav { display: flex; }
  .nav-item { height: 46px; border-bottom: 1px solid var(--c-line); border-radius: 0; }
  .nav-group { display: block; }
  .nav-menu { position: static; display: none; box-shadow: none; border: none; border-radius: 0; padding: 0 0 8px 14px; }
  .nav-group.is-open .nav-menu { display: block; }
  .grid-3, .grid-2 { grid-template-columns: minmax(0, 1fr); }
  .footer-top { grid-template-columns: minmax(0, 1fr); gap: 26px; }
  .auth-box { grid-template-columns: minmax(0, 1fr); }
  .auth-side { padding: 22px; }
  .hero-title { font-size: 32px; }
  .float-bar { right: 8px; bottom: 70px; }
}

@media (max-width: 620px) {
  .section { padding: 42px 0; }
  .grid-4 { grid-template-columns: minmax(0, 1fr); }
  .steps { grid-template-columns: minmax(0, 1fr); }
  .form-grid { grid-template-columns: minmax(0, 1fr); }
  .spec-row { grid-template-columns: 80px minmax(0, 1fr); }
  .page-title, .section-title { font-size: 22px; }
  .hero { padding: 34px 0 40px; }
  .hero-title { font-size: 27px; }
  .auth-form { padding: 22px 20px; }
  .article-body-wrap { padding: 18px 16px; }
  .buy-total { font-size: 28px; }
  .float-bar { display: none; }
  /* 表格转卡片 */
  .table-wrap { overflow: visible; }
  .data-table thead { display: none; }
  .data-table, .data-table tbody, .data-table tr, .data-table td { display: block; width: 100%; }
  .data-table tr { margin-bottom: 12px; padding: 6px 12px; background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius-sm); }
  .data-table td { display: flex; justify-content: space-between; gap: 12px; padding: 9px 0; border-bottom: 1px dashed var(--c-line); text-align: right; }
  .data-table td:last-child { border-bottom: none; }
  .data-table td::before { content: attr(data-label); color: var(--c-muted); font-size: 12px; text-align: left; flex-shrink: 0; }
  .data-table td[data-label=""]::before, .data-table td:not([data-label])::before { display: none; }
  .data-table .col-op { text-align: right; }
}

/* ===================== AI 助手与扩展插槽（预留层） ===================== */

.yx-slot { display: inline-flex; align-items: center; gap: 8px; }
.yx-slot:not(.has-content):empty { display: none; }
.yx-ai-mount { position: relative; z-index: 60; }
.yx-ai-mount:empty { display: none; }
.yx-ai-frame { width: 100%; }
.yx-ai-frame iframe { width: 100%; min-height: 420px; border: 1px solid var(--c-line); border-radius: var(--radius); background: #fff; }
[data-yx-slot="header"] .yx-ai-entry,
[data-yx-slot="user-header"] .yx-ai-entry {
  --yx-ai-bg: var(--c-primary); --yx-ai-fg: #fff; --yx-ai-radius: 999px;
  display: inline-flex; align-items: center; gap: 6px; height: 34px; padding: 0 14px;
  font-size: 13px; color: var(--yx-ai-fg); background: var(--yx-ai-bg); border: none; border-radius: var(--yx-ai-radius); cursor: pointer;
}
.yx-ai-panel {
  position: fixed; right: 16px; bottom: 16px; z-index: 70; width: min(380px, calc(100vw - 32px));
  max-height: min(70vh, 560px); overflow: auto; background: #fff; border: 1px solid var(--c-line);
  border-radius: var(--radius); box-shadow: var(--shadow-hover);
}
.yx-ai-panel:empty { display: none; }
.yx-ai-bubble { display: inline-block; padding: 8px 12px; margin: 6px 0; border-radius: 12px; background: var(--c-bg-soft); font-size: 13px; }
.host-info-box { margin-top: 4px; padding: 12px 14px; background: var(--c-bg-soft); border: 1px dashed var(--c-line-strong); border-radius: var(--radius-sm); }
.host-info-box .form-row:last-child { margin-bottom: 0; }
[data-yx-block] { position: relative; }

@media (max-width: 620px) {
  .yx-ai-panel { right: 8px; left: 8px; width: auto; bottom: 8px; max-height: 62vh; }
  .yx-ai-mount { margin-top: 10px; }
}