/* ==========================================================================
   好恢复 · 主站视觉系统（仅 www.haohuifu.com 生效，不污染分站）
   设计语言：深墨 Ink / 暖纸 Paper / 黄铜 Brass
   排版：中文系统字族 + 等宽编号 + 表格数字
   ========================================================================== */

:root {
  --ink: #0B1219;
  --ink-2: #101A24;
  --ink-3: #17232F;
  --paper: #F3F0E9;
  --paper-2: #FCFBF7;
  --line: #E2DCD1;
  --line-soft: #EDE8DF;
  --text: #171B21;
  --muted: #6A6E74;
  --brass: #A97C3F;
  --brass-lit: #C79A5C;
  --brass-soft: #F1E8D9;

  --brand: #0B1219;
  --brand-dark: #000000;
  --brand-soft: #F1E8D9;
  --accent: #A97C3F;
  --bg: #F3F0E9;
  --card: #FCFBF8;
  --radius: 3px;
  --shadow: 0 18px 50px rgba(11, 18, 25, .08);
  --container: 1240px;
  --header-h: 74px;

  --sans: "HarmonyOS Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
          -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", "Cascadia Code", Consolas,
          "Liberation Mono", "Courier New", monospace;
  --ease: cubic-bezier(.16, 1, .3, 1);
}

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: var(--sans);
  font-size: 15.5px;
  line-height: 1.75;
  font-feature-settings: "kern" 1;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--ink); color: var(--paper); }
a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--brass);
  outline-offset: 3px;
}
img { max-width: 100%; }

.container { width: min(100% - 48px, var(--container)); }

/* 章节节奏 */
.section { padding: clamp(46px, 5.2vw, 78px) 0; }
.section-muted {
  background: var(--paper-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.section-dark {
  position: relative;
  background: var(--ink);
  color: #fff;
  border: 0;
  overflow: hidden;
}
.section-dark::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(to right, rgba(255, 255, 255, .045) 0 1px, transparent 1px 96px);
  pointer-events: none;
}
.section-dark > .container { position: relative; z-index: 1; }

.stat-section { padding: 0 0 clamp(34px, 4vw, 54px); }

/* ==========================================================================
   按钮
   ========================================================================== */
.btn {
  border-radius: 2px;
  padding: 13px 24px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .02em;
  border: 1px solid transparent;
  transition: background .25s var(--ease), color .25s var(--ease),
              border-color .25s var(--ease), transform .25s var(--ease);
}
.btn:active { transform: translateY(1px); }

.btn-primary { background: var(--ink); color: #fff; border-color: var(--ink); }
.btn-primary:hover { background: var(--ink-3); border-color: var(--ink-3); color: #fff; }

.btn-accent { background: var(--brass); color: #fff; border-color: var(--brass); }
.btn-accent:hover { background: #966D35; border-color: #966D35; color: #fff; }

.btn-outline { background: transparent; border-color: var(--line); color: var(--text); }
.btn-outline:hover { border-color: var(--ink); color: var(--ink); background: transparent; }

.btn-ghost-light {
  background: rgba(255, 255, 255, .06);
  border-color: rgba(255, 255, 255, .28);
  color: #fff;
}
.btn-ghost-light:hover { background: rgba(255, 255, 255, .14); color: #fff; }

/* ==========================================================================
   顶部信息条 + 页头
   ========================================================================== */
.site-topbar {
  background: var(--ink);
  color: rgba(255, 255, 255, .58);
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
}
.topbar-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 36px; }
.topbar-note { text-transform: uppercase; }
.topbar-contact { display: flex; align-items: center; gap: 8px; white-space: nowrap; }
.topbar-contact a { color: #fff; font-weight: 600; letter-spacing: .06em; }
.topbar-contact a:hover { color: var(--brass-lit); }
.topbar-sep { opacity: .3; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--ink);
  border-bottom: 1px solid rgba(255, 255, 255, .1);
  backdrop-filter: blur(14px);
  transition: background .3s var(--ease), box-shadow .3s var(--ease);
}
.site-header.is-scrolled {
  background: rgba(11, 18, 25, .92);
  box-shadow: 0 12px 40px rgba(0, 0, 0, .28);
}
.header-inner { min-height: var(--header-h); gap: 24px; }

.brand { gap: 11px; }
.brand-mark { flex: 0 0 auto; width: 30px; height: 30px; color: var(--brass-lit); }
.brand-title { font-size: 16.5px; font-weight: 700; color: #fff; letter-spacing: .04em; }
.brand-sub {
  font-family: var(--mono);
  font-size: 10px;
  color: rgba(255, 255, 255, .45);
  letter-spacing: .18em;
  text-transform: uppercase;
}

.site-nav { gap: 2px; }
.site-nav a {
  position: relative;
  padding: 9px 13px;
  border-radius: 0;
  color: rgba(255, 255, 255, .7);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .02em;
  transition: color .2s var(--ease);
}
.site-nav a::after {
  content: "";
  position: absolute;
  left: 13px; right: 13px; bottom: 3px;
  height: 1px;
  background: var(--brass-lit);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s var(--ease);
}
.site-nav a:hover { color: #fff; background: none; }
.site-nav a:hover::after { transform: scaleX(1); }

.header-actions { gap: 10px; }
.header-phone {
  padding: 10px 18px;
  font-size: 13px;
  background: var(--brass);
  border-color: var(--brass);
  color: #fff;
  font-variant-numeric: tabular-nums;
}
.header-phone:hover { background: #966D35; border-color: #966D35; color: #fff; }

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 7px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, .28);
  color: #fff;
  border-radius: 2px;
  padding: 9px 13px;
  font-size: 13px;
  font-family: var(--sans);
}
.nav-toggle::before {
  content: "";
  width: 13px; height: 1px;
  background: currentColor;
  box-shadow: 0 4px 0 currentColor, 0 -4px 0 currentColor;
}

/* ==========================================================================
   首屏
   ========================================================================== */
.hero {
  position: relative;
  background: var(--ink);
  color: #fff;
  overflow: hidden;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(680px 420px at var(--mx, 78%) var(--my, 8%), rgba(169, 124, 63, .30), transparent 68%),
    repeating-linear-gradient(to right, rgba(255, 255, 255, .045) 0 1px, transparent 1px 92px);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E");
  opacity: .05;
  mix-blend-mode: overlay;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 1;
  padding: clamp(54px, 7vw, 100px) 0 clamp(46px, 5.5vw, 84px);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.16fr .84fr;
  gap: clamp(32px, 5vw, 68px);
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--brass-lit);
}
.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: currentColor;
  opacity: .75;
}
.section-dark .eyebrow { color: var(--brass-lit); }

.hero h1 {
  margin: 22px 0 0;
  font-size: clamp(36px, 4.2vw, 57px);
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: .01em;
  color: #fff;
  max-width: none;
}
.hero h1 em {
  font-style: normal;
  color: var(--brass-lit);
}
.hero .hero-lead {
  margin: 24px 0 0;
  max-width: none;
  font-size: clamp(14px, 1.2vw, 16px);
  line-height: 1.9;
  color: rgba(255, 255, 255, .9);
  letter-spacing: .02em;
}
.hero .hero-lead span {
  font-family: var(--mono);
  font-size: .92em;
  color: rgba(255, 255, 255, .55);
  margin: 0 4px;
}
.hero .hero-desc {
  margin: 18px 0 0;
  max-width: 42em;
  font-size: 15px;
  line-height: 1.95;
  color: rgba(255, 255, 255, .68);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }

/* 右侧速判面板 */
.hero-panel {
  position: relative;
  background: rgba(255, 255, 255, .035);
  border: 1px solid rgba(255, 255, 255, .16);
  backdrop-filter: blur(8px);
}
.hero-panel-hd {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 15px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, .14);
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .68);
}
.hero-panel-hd .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--brass-lit);
  box-shadow: 0 0 0 4px rgba(199, 154, 92, .18);
}
.hero-panel ul { margin: 0; padding: 0; list-style: none; }
.hero-panel li {
  display: grid;
  grid-template-columns: 62px 1fr;
  gap: 14px;
  padding: 15px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, .09);
}
.hero-panel li:last-child { border-bottom: 0; }
.hero-panel .st {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .1em;
  color: rgba(255, 255, 255, .5);
  padding-top: 4px;
  text-transform: uppercase;
}
.hero-panel li b { display: block; font-size: 14.5px; font-weight: 600; color: #fff; letter-spacing: .01em; }
.hero-panel li p { margin: 5px 0 0; font-size: 13px; line-height: 1.75; color: rgba(255, 255, 255, .64); }
.hero-panel li.alert .st { color: var(--brass-lit); }
.hero-panel li.alert b { color: var(--brass-lit); }
.hero-panel-ft {
  padding: 13px 20px;
  border-top: 1px solid rgba(255, 255, 255, .14);
  font-size: 12px;
  color: rgba(255, 255, 255, .5);
}

/* 品牌 / 格式滚动带 */
.marquee {
  position: relative;
  z-index: 1;
  border-top: 1px solid rgba(255, 255, 255, .1);
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 3%, #000 97%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 3%, #000 97%, transparent);
}
.marquee-track {
  display: flex;
  width: max-content;
  animation: mq 52s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
.mq-group { display: flex; }
.mq-item {
  padding: 15px 28px;
  border-right: 1px solid rgba(255, 255, 255, .1);
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: .1em;
  color: rgba(255, 255, 255, .6);
  white-space: nowrap;
}
@keyframes mq { to { transform: translateX(-50%); } }

/* ==========================================================================
   数据条
   ========================================================================== */
.stat-band {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--line);
}
.stat-cell { padding: 30px 26px 28px; border-left: 1px solid var(--line); }
.stat-cell:first-child { border-left: 0; padding-left: 0; }
.stat-num {
  display: block;
  font-size: clamp(26px, 2.9vw, 38px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
}
.stat-num .n { font: inherit; }
.stat-num i { font-style: normal; color: var(--brass); font-size: .62em; margin-left: 2px; }
.stat-label {
  display: block;
  margin-top: 12px;
  font-size: 13px;
  color: #5F6469;
  letter-spacing: .02em;
}

/* ==========================================================================
   章节头
   ========================================================================== */
.sec-head {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 24px;
  margin-bottom: clamp(30px, 4vw, 48px);
}
.sec-head h2 {
  margin: 16px 0 0;
  font-size: clamp(25px, 2.8vw, 36px);
  line-height: 1.28;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--ink);
}
.sec-head p {
  margin: 14px 0 0;
  max-width: 48em;
  font-size: 15px;
  line-height: 1.9;
  color: #5D6167;
}
.sec-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 4px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink);
  border-bottom: 1px solid var(--ink);
  white-space: nowrap;
  transition: gap .25s var(--ease), color .25s var(--ease);
}
.sec-link:hover { gap: 14px; color: var(--brass); border-color: var(--brass); }
.section-dark .sec-head h2 { color: #fff; }
.section-dark .sec-head p { color: rgba(255, 255, 255, .56); }
.section-dark .sec-link { color: #fff; border-color: rgba(255, 255, 255, .4); }
.section-dark .sec-link:hover { color: var(--brass-lit); border-color: var(--brass-lit); }

/* 锚点跳转避让吸顶导航 */
section[id] { scroll-margin-top: 96px; }

/* 首屏分层入场 */
@keyframes heroIn {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: none; }
}
.js .hero-main > * { animation: heroIn .85s var(--ease) both; }
.js .hero-main > *:nth-child(1) { animation-delay: .05s; }
.js .hero-main > *:nth-child(2) { animation-delay: .12s; }
.js .hero-main > *:nth-child(3) { animation-delay: .20s; }
.js .hero-main > *:nth-child(4) { animation-delay: .28s; }
.js .hero-main > *:nth-child(5) { animation-delay: .36s; }
.js .hero-panel { animation: heroIn 1s var(--ease) both; animation-delay: .30s; }

/* ==========================================================================
   故障分诊
   ========================================================================== */
.triage-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.triage-card {
  background: var(--paper-2);
  padding: 30px 28px 28px;
  transition: background .3s var(--ease);
}
.triage-card:hover { background: #fff; }
.triage-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.triage-card h3 { margin: 0; font-size: 18px; font-weight: 700; color: var(--ink); letter-spacing: .02em; }
.triage-code { font-family: var(--mono); font-size: 10.5px; letter-spacing: .14em; color: var(--brass); }
.triage-sub { margin: 10px 0 0; font-size: 13px; line-height: 1.8; color: var(--muted); }
.triage-row { margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--line-soft); }
.triage-row dt {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
}
.triage-row dd { margin: 6px 0 0; font-size: 13.5px; line-height: 1.8; color: var(--text); }
.triage-row.alert dd { color: var(--ink); font-weight: 600; }

/* ==========================================================================
   服务卡
   ========================================================================== */
.svc-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.svc-card {
  position: relative;
  display: block;
  background: var(--paper-2);
  padding: 24px 24px 22px;
  min-height: 188px;
  transition: background .3s var(--ease);
}
.svc-card::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--brass);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s var(--ease);
}
.svc-card:hover { background: #fff; }
.svc-card:hover::after { transform: scaleX(1); }
.svc-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.svc-ico {
  width: 27px;
  height: 27px;
  color: var(--brass);
  opacity: 1;
  transition: opacity .3s var(--ease), transform .4s var(--ease);
}
.svc-card:hover .svc-ico { opacity: 1; transform: translateY(-1px); }
.svc-idx {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  color: var(--brass);
}
.svc-card h3 {
  margin: 13px 0 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
  letter-spacing: .01em;
}
.svc-card p { margin: 8px 0 0; font-size: 13.5px; line-height: 1.8; color: #565B61; }
.svc-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }
.svc-tags span {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .05em;
  color: #6B6459;
  border: 1px solid #D8D1C4;
  padding: 2px 6px;
  white-space: nowrap;
}
.svc-card .arrow {
  position: absolute;
  right: 22px; bottom: 20px;
  font-size: 15px;
  color: var(--brass);
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity .3s var(--ease), transform .3s var(--ease);
}
.svc-card:hover .arrow { opacity: 1; transform: translateX(0); }

/* ==========================================================================
   流程
   ========================================================================== */
.flow {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-top: 1px solid var(--ink);
}
.flow-step { position: relative; display: flex; flex-direction: column; padding: 30px 22px 0 0; }
.flow-step::before {
  content: "";
  position: absolute;
  top: -3.5px; left: 0;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--ink);
}
.flow-num {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--brass);
}
.flow-step h3 { margin: 12px 0 0; font-size: 17px; font-weight: 700; color: var(--ink); }
.flow-step p { margin: 10px 0 0; font-size: 13.5px; line-height: 1.85; color: #5A5F65; padding-right: 8px; }
.flow-time {
  align-self: flex-start;
  margin-top: auto;
  padding-top: 16px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .1em;
  color: var(--brass);
}

/* ==========================================================================
   技术手段（深色）
   ========================================================================== */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0 40px;
}
.tech-item {
  padding: 24px 0 26px;
  border-top: 1px solid rgba(255, 255, 255, .15);
}
.tech-code {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  color: var(--brass-lit);
}
.tech-code span {
  color: rgba(255, 255, 255, .42);
  letter-spacing: .06em;
  text-transform: uppercase;
  font-size: 10px;
}
.tech-item h3 { margin: 13px 0 0; font-size: 17px; font-weight: 600; color: #fff; letter-spacing: .02em; }
.tech-item p { margin: 9px 0 0; font-size: 13.5px; line-height: 1.85; color: rgba(255, 255, 255, .62); }

/* ==========================================================================
   覆盖表
   ========================================================================== */
.table-scroll { width: 100%; }
.cov {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}
.cov thead th {
  text-align: left;
  padding: 0 18px 12px 0;
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 400;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--ink);
}
.cov tbody td {
  padding: 16px 18px 16px 0;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  line-height: 1.75;
  color: var(--muted);
}
.cov tbody td:first-child { color: var(--ink); font-weight: 600; white-space: nowrap; }
.cov tbody tr { transition: background .2s var(--ease); }
.cov tbody tr:hover { background: rgba(255, 255, 255, .7); }

/* ==========================================================================
   边界说明
   ========================================================================== */
.limit-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 48px; }
.limit-item {
  display: grid;
  grid-template-columns: 26px 1fr;
  gap: 14px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.limit-item .mark {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--brass);
  padding-top: 2px;
}
.limit-item h3 { margin: 0; font-size: 15.5px; font-weight: 700; color: var(--ink); }
.limit-item p { margin: 7px 0 0; font-size: 13.5px; line-height: 1.85; color: #5A5F65; }

/* ==========================================================================
   软件产品
   ========================================================================== */
.sw-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: 56px;
  border-top: 1px solid var(--ink);
}
.sw-row {
  display: grid;
  grid-template-columns: 1fr 72px 22px;
  align-items: center;
  gap: 16px;
  padding: 17px 4px;
  border-bottom: 1px solid var(--line);
  transition: padding-left .3s var(--ease), color .25s var(--ease);
}
.sw-row:hover { padding-left: 12px; color: var(--brass); }
.sw-row strong { font-size: 15px; font-weight: 600; color: var(--ink); }
.sw-row:hover strong { color: var(--brass); }
.sw-row .cnt {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--muted);
  text-align: right;
}
.sw-row .go { font-size: 13px; color: var(--brass); text-align: right; }
.sw-note {
  margin: 22px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--brass);
  font-size: 13px;
  line-height: 1.85;
  color: var(--muted);
}

/* ==========================================================================
   服务网络
   ========================================================================== */
.net-band {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: clamp(28px, 4vw, 56px);
  align-items: center;
  background: var(--ink);
  color: #fff;
  padding: clamp(34px, 4.5vw, 58px);
  overflow: hidden;
}
.net-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(to right, rgba(255, 255, 255, .05) 0 1px, transparent 1px 76px);
  pointer-events: none;
}
.net-band > * { position: relative; z-index: 1; }
.net-band h2 { margin: 14px 0 0; font-size: clamp(22px, 2.4vw, 30px); font-weight: 700; color: #fff; line-height: 1.3; }
.net-band p { margin: 12px 0 0; font-size: 13.5px; line-height: 1.9; color: rgba(255, 255, 255, .6); }
.net-nums { display: flex; gap: 36px; margin: 22px 0 0; }
.net-nums div { border-left: 1px solid rgba(255, 255, 255, .22); padding-left: 14px; }
.net-nums b { display: block; font-size: 24px; font-weight: 700; line-height: 1.1; font-variant-numeric: tabular-nums; }
.net-nums span { font-size: 12px; color: rgba(255, 255, 255, .5); }
.net-actions { display: flex; flex-direction: column; gap: 10px; }
.net-actions .btn { width: 100%; }

/* ==========================================================================
   FAQ
   ========================================================================== */
.qa-list { border-top: 1px solid var(--ink); }
.qa-item { border-bottom: 1px solid var(--line); background: none; border-radius: 0; padding: 0; }
.qa-item summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding: 21px 0;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink);
  transition: color .2s var(--ease);
}
.qa-item summary::-webkit-details-marker { display: none; }
.qa-item summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--mono);
  font-size: 19px;
  line-height: 1.35;
  color: var(--brass);
}
.qa-item[open] summary::after { content: "−"; }
.qa-item summary:hover { color: var(--brass); }
.qa-body { padding: 0 0 22px; }
.qa-body p { margin: 0; max-width: 52em; font-size: 14px; line-height: 1.95; color: var(--muted); }
.qa-item[open] .qa-body { animation: qaIn .32s var(--ease); }
@keyframes qaIn { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }

/* ==========================================================================
   联系区块
   ========================================================================== */
.contact-block {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: clamp(30px, 4.5vw, 60px);
  background: var(--ink);
  color: #fff;
  padding: clamp(34px, 5vw, 64px);
  overflow: hidden;
}
.contact-block::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(520px 320px at 88% 12%, rgba(169, 124, 63, .26), transparent 70%),
    repeating-linear-gradient(to right, rgba(255, 255, 255, .045) 0 1px, transparent 1px 84px);
  pointer-events: none;
}
.contact-block > * { position: relative; z-index: 1; }
.contact-block h2 { margin: 14px 0 0; font-size: clamp(22px, 2.5vw, 31px); line-height: 1.32; font-weight: 700; color: #fff; }
.contact-block .lead { margin: 14px 0 0; font-size: 13.5px; line-height: 1.95; color: rgba(255, 255, 255, .6); max-width: 30em; }
.contact-tel {
  display: block;
  margin-top: 26px;
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--brass-lit);
  font-variant-numeric: tabular-nums;
}
.contact-tel-note { margin-top: 6px; font-family: var(--mono); font-size: 10.5px; letter-spacing: .16em; color: rgba(255, 255, 255, .4); text-transform: uppercase; }
.contact-rows { border-top: 1px solid rgba(255, 255, 255, .16); }
.contact-row {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 14px;
  padding: 13px 0;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
  font-size: 13.5px;
  color: rgba(255, 255, 255, .82);
  margin: 0;
}
.contact-row span {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  color: rgba(255, 255, 255, .42);
  padding-top: 4px;
}
.contact-row a { color: #fff; }
.contact-row a:hover { color: var(--brass-lit); }
.contact-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 22px; }

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer {
  background: var(--ink);
  color: rgba(255, 255, 255, .56);
  margin-top: 0;
  border-top: 1px solid rgba(255, 255, 255, .1);
  position: relative;
  overflow: hidden;
}
.footer-grid {
  grid-template-columns: 1.5fr 1fr 1fr 1.1fr;
  gap: 40px;
  padding: clamp(44px, 5vw, 68px) 0 36px;
}
.footer-brand .logo { display: flex; align-items: center; gap: 10px; color: #fff; }
.footer-brand .logo .brand-mark { width: 26px; height: 26px; color: var(--brass-lit); }
.footer-brand .logo span { font-size: 16px; font-weight: 700; color: #fff; letter-spacing: .04em; }
.footer-brand p { margin: 16px 0 0; font-size: 13px; line-height: 1.9; color: rgba(255, 255, 255, .5); max-width: 26em; }
.footer-note {
  margin-top: 14px !important;
  padding-left: 12px;
  border-left: 1px solid var(--brass);
  color: rgba(255, 255, 255, .42) !important;
  font-size: 12px !important;
}
.footer-col h4 {
  margin: 0 0 15px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .1em;
  color: rgba(255, 255, 255, .62);
}
.footer-col ul { margin: 0; padding: 0; list-style: none; }
.footer-col li { margin-bottom: 9px; font-size: 13px; line-height: 1.7; }
.footer-col a { color: rgba(255, 255, 255, .72); transition: color .2s var(--ease); }
.footer-col a:hover { color: var(--brass-lit); }
.footer-col span { color: rgba(255, 255, 255, .55); }
.footer-im { margin: 14px 0 0; font-size: 12px; color: rgba(255, 255, 255, .45); line-height: 1.9; }

.footer-wordmark {
  padding: 6px 0 0;
  text-align: center;
  font-family: var(--mono);
  font-size: clamp(44px, 9.6vw, 132px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: rgba(255, 255, 255, .035);
  user-select: none;
  pointer-events: none;
  white-space: nowrap;
  overflow: hidden;
}

.footer-meta {
  display: block;
  border-top: 1px solid rgba(255, 255, 255, .12);
  padding: 22px 0 30px;
  font-size: 12.5px;
  color: rgba(255, 255, 255, .42);
}
.footer-disclaimer { margin: 0; line-height: 1.95; max-width: 76em; }
.footer-links { margin: 16px 0 0; display: flex; flex-wrap: wrap; gap: 20px; }
.footer-links a { color: rgba(255, 255, 255, .7); }
.footer-links a:hover { color: var(--brass-lit); }
.footer-copy { margin: 16px 0 0; display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.footer-copy a { color: rgba(255, 255, 255, .45); }
.footer-copy a:hover { color: rgba(255, 255, 255, .75); }

/* ==========================================================================
   内页：分类 / 内容 / 单页
   ========================================================================== */
.page-banner {
  position: relative;
  background: var(--ink);
  color: #fff;
  padding: clamp(34px, 4.5vw, 58px) 0 clamp(38px, 5vw, 64px);
  overflow: hidden;
}
.page-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(560px 300px at 84% -10%, rgba(169, 124, 63, .22), transparent 70%),
    repeating-linear-gradient(to right, rgba(255, 255, 255, .05) 0 1px, transparent 1px 88px);
  pointer-events: none;
}
.page-banner > * { position: relative; z-index: 1; }
.page-banner h1 {
  margin: 12px 0 0;
  font-size: clamp(26px, 3.2vw, 40px);
  line-height: 1.28;
  font-weight: 700;
  letter-spacing: .01em;
  color: #fff;
}
.page-banner p {
  margin: 14px 0 0;
  max-width: 54em;
  font-size: 14px;
  line-height: 1.9;
  color: rgba(255, 255, 255, .6);
}
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: rgba(255, 255, 255, .42);
}
.breadcrumb a { color: rgba(255, 255, 255, .68); }
.breadcrumb a:hover { color: var(--brass-lit); }
.breadcrumb .sep { opacity: .35; }

.page-banner .article-meta {
  margin: 18px 0 0;
  padding: 0;
  border: 0;
  color: rgba(255, 255, 255, .45);
}
.page-banner .article-meta span { letter-spacing: .12em; }

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 318px;
  gap: clamp(24px, 3.5vw, 44px);
  padding: clamp(36px, 4.5vw, 60px) 0 clamp(56px, 7vw, 96px);
}
.page-main { min-width: 0; }

/* 卡片/面板：去阴影，用细线 */
.panel {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 3px;
  box-shadow: none;
}
.panel-hd {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 15px 20px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
}
.panel-hd h2 { margin: 0; font-size: 13.5px; font-weight: 700; letter-spacing: .02em; }
.panel-hd::before {
  content: "";
  width: 3px; height: 13px;
  background: var(--brass);
}
.panel-bd { padding: 20px; }
.panel-bd p { margin: 0 0 12px; font-size: 13px; line-height: 1.9; color: var(--muted); }
.panel-bd p:last-child { margin-bottom: 0; }

.side-list { list-style: none; margin: 0; padding: 0; }
.side-list li { border-bottom: 1px solid var(--line-soft); }
.side-list li:last-child { border-bottom: 0; }
.side-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 11px 0;
  font-size: 13.5px;
  color: #3A3F45;
  transition: color .2s var(--ease), padding-left .25s var(--ease);
}
.side-list a::after { content: "→"; font-size: 12px; color: var(--brass); opacity: 0; transition: opacity .2s; }
.side-list a:hover { color: var(--brass); padding-left: 4px; }
.side-list a:hover::after { opacity: 1; }

/* 正文排版 */
.article { overflow: hidden; }
.article .panel-bd { padding: clamp(24px, 3.5vw, 44px); }
.article h1 {
  margin: 0 0 10px;
  font-size: clamp(24px, 2.8vw, 33px);
  line-height: 1.34;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--ink);
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 26px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--muted);
}
.article-body { font-size: 15px; color: #2A2F35; }
.prose { line-height: 1.95; }
.prose p { margin: 0 0 1.15em; }
.prose > p:first-of-type {
  font-size: 16px;
  line-height: 1.95;
  color: #23282E;
}
.prose h2 {
  position: relative;
  margin: 2.1em 0 .7em;
  padding-left: 14px;
  font-size: 20px;
  line-height: 1.5;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: .01em;
}
.prose h2::before {
  content: "";
  position: absolute;
  left: 0; top: .28em; bottom: .28em;
  width: 3px;
  background: var(--brass);
}
.prose h3 { margin: 1.7em 0 .5em; font-size: 16.5px; font-weight: 700; color: var(--ink); }
.prose ul, .prose ol { margin: 0 0 1.2em; padding-left: 1.35em; }
.prose li { margin-bottom: .45em; }
.prose ul li::marker { color: var(--brass); }
.prose ol li::marker { color: var(--brass); font-family: var(--mono); font-size: .9em; }
.prose strong { color: var(--ink); font-weight: 700; }
.prose blockquote {
  margin: 1.5em 0;
  padding: 16px 22px;
  background: var(--brass-soft);
  border-left: 2px solid var(--brass);
  color: #4A4136;
  font-size: 14px;
}
.prose table { width: 100%; border-collapse: collapse; margin: 1.4em 0; font-size: 13.5px; }
.prose th, .prose td { border: 1px solid var(--line); padding: 9px 12px; text-align: left; }
.prose th { background: var(--paper); font-weight: 700; color: var(--ink); }
.prose img { border: 1px solid var(--line); margin: 1.6em 0 .6em; }
.prose code { font-family: var(--mono); font-size: .9em; background: #EFEBE3; padding: 1px 5px; }
.prose a { color: var(--brass); border-bottom: 1px solid rgba(169, 124, 63, .35); }
.prose a:hover { border-color: var(--brass); }

/* 正文尾注与动作区 */
.note-box {
  margin-top: 34px;
  padding: 18px 22px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 2px solid var(--brass);
}
.note-box p { margin: 0; font-size: 12.5px; line-height: 1.9; color: var(--muted); }
.note-box strong { color: var(--ink); font-size: 13px; }

.article-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.aside-sticky { position: sticky; top: calc(var(--header-h) + 20px); }

/* 列表卡 */
.list-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.list-card {
  display: flex;
  flex-direction: column;
  background: var(--paper-2);
  box-shadow: none;
  border: 0;
  border-radius: 0;
  overflow: hidden;
  transition: background .3s var(--ease);
}
.list-card:hover { background: #fff; }
.list-card .thumb { display: block; overflow: hidden; border-bottom: 1px solid var(--line); }
.list-card .thumb img { width: 100%; height: 176px; object-fit: cover; transition: transform .6s var(--ease); }
.list-card:hover .thumb img { transform: scale(1.03); }
.list-card .card-body { padding: 22px 22px 24px; flex: 1; display: flex; flex-direction: column; }
.list-card h2 { margin: 0; font-size: 16.5px; line-height: 1.55; font-weight: 700; }
.list-card h2 a { color: var(--ink); }
.list-card h2 a:hover { color: var(--brass); }
.list-card p { margin: 10px 0 0; font-size: 13px; line-height: 1.85; color: var(--muted); flex: 1; }
.list-card .more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--brass);
}
.list-card .meta-line {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .1em;
  color: var(--muted);
}

/* 分页 */
.pager {
  flex-direction: row;
  flex-wrap: wrap;
  border-top: 0;
  padding: 30px 0 0;
  gap: 8px;
}
.pager a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  padding: 0 12px;
  border: 1px solid var(--line);
  background: var(--paper-2);
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--ink);
  transition: border-color .2s, color .2s, background .2s;
}
.pager a:hover { border-color: var(--ink); color: var(--ink); background: #fff; }

.empty-state { padding: 48px 24px; text-align: center; color: var(--muted); font-size: 14px; }
.empty-state a { color: var(--brass); border-bottom: 1px solid rgba(169, 124, 63, .4); }

/* 平台浮动咨询按钮：改为品牌色 */
#vmapp-message-float-root button {
  background: var(--brass) !important;
  border-radius: 2px !important;
  font-family: var(--sans) !important;
  font-size: 13px !important;
  letter-spacing: .06em;
  padding: 11px 16px !important;
  box-shadow: 0 12px 32px rgba(11, 18, 25, .3) !important;
}

/* ==========================================================================
   滚动动效（渐进增强，无 JS 时内容照常可见）
   ========================================================================== */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
  transition-delay: var(--d, 0ms);
}
.js [data-reveal].is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js [data-reveal] { opacity: 1; transform: none; transition: none; }
  .marquee-track { animation: none; }
  * { animation-duration: .001s !important; transition-duration: .001s !important; }
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1080px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-brand { grid-column: 1 / -1; }
  .tech-grid { gap: 0 28px; }
  .svc-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-band { grid-template-columns: repeat(3, 1fr); }
  .stat-cell { border-bottom: 1px solid var(--line); }
}

@media (max-width: 960px) {
  .container { width: min(100% - 36px, var(--container)); }
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero-panel { max-width: 520px; }
  .hero .hero-desc { max-width: none; }
  .triage-grid { grid-template-columns: 1fr; }
  .flow { grid-template-columns: repeat(2, 1fr); gap: 0 24px; }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .limit-grid { grid-template-columns: 1fr; gap: 0; }
  .net-band { grid-template-columns: 1fr; }
  .contact-block { grid-template-columns: 1fr; }
  .page-layout { grid-template-columns: 1fr; }
  .page-layout aside { display: none; }
  .sec-head { grid-template-columns: 1fr; align-items: start; gap: 14px; }

  .site-nav {
    position: absolute;
    top: calc(100% + 1px);
    left: 0; right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 6px;
    background: var(--ink-2);
    border: 1px solid rgba(255, 255, 255, .14);
    box-shadow: 0 24px 48px rgba(0, 0, 0, .35);
  }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 13px 14px; border-bottom: 1px solid rgba(255, 255, 255, .07); border-radius: 0; }
  .site-nav a:last-child { border-bottom: 0; }
  .site-nav a::after { display: none; }
  .nav-toggle { display: inline-flex; }
  .header-phone { display: none; }
  .topbar-note { font-size: 10.5px; letter-spacing: .06em; }
}

@media (max-width: 720px) {
  body { font-size: 15px; }
  .hero h1 { font-size: clamp(27px, 8.3vw, 36px); line-height: 1.24; letter-spacing: 0; }
  .hero .eyebrow { font-size: 9.5px; letter-spacing: .1em; }
  .eyebrow::before { width: 16px; }
  .page-banner h1 { font-size: clamp(24px, 7vw, 31px); }
  .sec-head h2 { font-size: clamp(22px, 6vw, 28px); }
  .svc-grid { grid-template-columns: 1fr; }
  .svc-card { min-height: 0; }
  .list-grid { grid-template-columns: 1fr; }
  .stat-band { grid-template-columns: repeat(2, 1fr); }
  .stat-cell { padding: 22px 18px; }
  .stat-cell:nth-child(odd) { border-left: 0; padding-left: 0; }
  .tech-grid { grid-template-columns: 1fr; }
  .flow { grid-template-columns: 1fr; }
  .flow-step { padding: 24px 0 0; border-top: 1px solid var(--line-soft); }
  .flow-step::before { display: none; }
  .flow:last-child { border-bottom: 1px solid var(--line-soft); }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-col li { margin-bottom: 6px; }
  .hero-actions .btn { flex: 1 1 auto; }
  .net-nums { gap: 22px; }
  .contact-row { grid-template-columns: 60px 1fr; }
  .article .panel-bd { padding: 20px 16px; }

  .cov thead { display: none; }
  .cov tbody tr { display: block; padding: 14px 0; border-bottom: 1px solid var(--line); }
  .cov tbody td { display: block; padding: 3px 0; border: 0; }
  .cov tbody td::before {
    content: attr(data-label);
    display: inline-block;
    min-width: 62px;
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: .12em;
    color: var(--muted);
  }
  .cov tbody td:first-child { white-space: normal; }
}

@media (max-width: 420px) {
  .container { width: min(100% - 28px, var(--container)); }
  .topbar-note { display: none; }
  .topbar-inner { justify-content: center; }
}