/* 传统官方企业门户：海军蓝 + 金色，居中对称 */

:root {
  --paper: #F7F4EE;
  --navy: #0B1F3A;
  --gold: #C9A227;
  --ink: #1C2430;
  --muted: #5C6570;
  --card: #FFFFFF;
  --line: #D9D2C5;
}

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

html {
  scroll-behavior: auto;
}

body {
  background: var(--paper);
  color: var(--ink);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.85;
}

h1,
h2,
h3,
.brand-name {
  font-family: "Noto Serif SC", "Songti SC", "STSong", Georgia, serif;
  font-weight: 600;
  color: var(--navy);
  line-height: 1.4;
}

p {
  margin-bottom: 16px;
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--navy);
  text-decoration: underline;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--gold);
}

svg {
  display: block;
}

.wrap {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- 导航 ---------- */
.site-header {
  background: var(--navy);
  width: 100%;
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 74px;
  gap: 16px 32px;
  flex-wrap: wrap;
  padding-top: 10px;
  padding-bottom: 10px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #f7f4ee;
  text-decoration: none;
}

.brand:hover {
  color: var(--gold);
}

.brand-mark {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.brand-name {
  color: inherit;
  font-size: 20px;
  letter-spacing: 0.06em;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 28px;
}

.site-nav a {
  color: #e8e4d8;
  text-decoration: none;
  padding: 8px 0 6px;
  border-bottom: 2px solid transparent;
  font-size: 15px;
  letter-spacing: 0.08em;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

/* ---------- Hero ---------- */
.hero {
  background: var(--navy);
  color: #f7f4ee;
  text-align: center;
  padding: 68px 0 76px;
  border-bottom: 3px solid var(--gold);
}

.hero h1 {
  color: #f7f4ee;
  font-size: 36px;
  margin-bottom: 22px;
}

.hero .lead {
  color: #d9d2c5;
  max-width: 780px;
  margin: 0 auto 16px;
  font-size: 17px;
}

.hero .lead:last-child {
  margin-bottom: 0;
}

/* ---------- 通用区块 ---------- */
.section {
  padding: 58px 0;
}

.section + .section {
  border-top: 1px solid var(--line);
}

.section-kicker {
  display: block;
  text-align: center;
  color: var(--gold);
  letter-spacing: 0.2em;
  font-size: 13px;
  margin-bottom: 8px;
}

.section-title {
  text-align: center;
  font-size: 28px;
  margin-bottom: 14px;
}

.section-intro {
  text-align: center;
  color: var(--muted);
  max-width: 840px;
  margin: 0 auto 36px;
}

.section-intro p {
  margin-bottom: 12px;
}

.prose {
  max-width: 860px;
  margin: 0 auto;
}

.prose h3 {
  font-size: 20px;
  margin: 28px 0 12px;
}

.prose p + p {
  margin-top: 0;
}

/* ---------- 三列矩形卡片 ---------- */
.card-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 28px 24px;
}

.card h3 {
  font-size: 20px;
  margin: 14px 0 12px;
}

.icon-box {
  width: 40px;
  height: 40px;
  color: var(--gold);
}

.icon-box svg {
  width: 40px;
  height: 40px;
}

.card-full {
  margin-top: 20px;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 26px;
  background: var(--gold);
  color: var(--navy);
  border: 1px solid var(--gold);
  border-radius: 2px;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  line-height: 1.4;
  text-decoration: none;
}

.btn:hover {
  background: #b8911f;
  border-color: #b8911f;
  color: #ffffff;
}

.btn-navy {
  background: var(--navy);
  border-color: var(--navy);
  color: #f7f4ee;
}

.btn-navy:hover {
  background: #16325a;
  color: #ffffff;
}

.btn-ghost {
  background: transparent;
  color: var(--navy);
  border-color: var(--navy);
}

.btn-ghost:hover {
  background: var(--navy);
  color: #f7f4ee;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.btn svg {
  width: 16px;
  height: 16px;
}

/* ---------- 多平台 ---------- */
.platform-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.platform {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 26px 24px;
}

.platform h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  margin-bottom: 12px;
}

.platform h3 svg {
  width: 22px;
  height: 22px;
  color: var(--gold);
  flex-shrink: 0;
}

.platform .btn {
  margin-top: 16px;
}

/* ---------- 深讲 ---------- */
.deep-block {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 28px 30px;
  margin-bottom: 20px;
}

.deep-block h3 {
  font-size: 20px;
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

/* ---------- 评价 ---------- */
.review-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.review {
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 4px solid var(--gold);
  border-radius: 2px;
  padding: 24px 28px;
}

.review h3 {
  font-size: 18px;
  margin-bottom: 4px;
}

.review .role {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 12px;
}

/* ---------- 数据背书 ---------- */
.stat-block {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 28px 30px;
  margin-bottom: 20px;
}

.stat-block h3 {
  color: var(--navy);
  font-size: 22px;
  margin-bottom: 12px;
}

.stat-block h3 span {
  color: var(--gold);
  margin-right: 8px;
}

/* ---------- 表格 ---------- */
.table-wrap {
  overflow-x: auto;
  margin: 24px 0;
  border: 1px solid var(--line);
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
}

th,
td {
  border: 1px solid var(--line);
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--navy);
  color: #f7f4ee;
  font-weight: 600;
  font-family: "Noto Serif SC", "Songti SC", "STSong", Georgia, serif;
}

tr:nth-child(even) td {
  background: #fbf8f2;
}

/* ---------- FAQ ---------- */
.faq-list {
  max-width: 920px;
  margin: 0 auto;
}

.faq-list dt {
  font-family: "Noto Serif SC", "Songti SC", "STSong", Georgia, serif;
  color: var(--navy);
  font-size: 18px;
  font-weight: 600;
  padding: 18px 22px 8px;
  border-left: 3px solid var(--gold);
  background: var(--card);
  margin-top: 16px;
}

.faq-list dd {
  padding: 0 22px 18px;
  border-left: 3px solid var(--gold);
  background: var(--card);
  color: var(--ink);
  border-bottom: 1px solid var(--line);
}

/* ---------- 下载页主推 ---------- */
.download-lead {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 36px 40px;
  text-align: center;
}

.download-lead .hero-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  color: var(--gold);
}

.download-lead h2 {
  font-size: 26px;
  margin-bottom: 14px;
}

.download-lead .btn {
  margin-top: 8px;
}

/* ---------- 分步 ---------- */
.step-group {
  margin-bottom: 36px;
}

.step-group h3 {
  font-size: 20px;
  margin-bottom: 16px;
}

.step {
  display: flex;
  gap: 16px;
  margin-bottom: 16px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 20px 22px;
}

.step-num {
  flex: 0 0 36px;
  width: 36px;
  height: 36px;
  background: var(--navy);
  color: var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Noto Serif SC", "Songti SC", "STSong", Georgia, serif;
  font-weight: 700;
}

.step h4 {
  font-family: "Noto Serif SC", "Songti SC", "STSong", Georgia, serif;
  color: var(--navy);
  font-size: 17px;
  margin-bottom: 6px;
}

/* ---------- 系统要求 ---------- */
.req-list {
  margin: 16px 0 8px 22px;
}

.req-list li {
  margin-bottom: 10px;
}

.update-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 22px 24px;
  margin-bottom: 16px;
}

.update-item h3 {
  font-size: 18px;
  margin-bottom: 10px;
}

/* ---------- 中文版长文 ---------- */
.article {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 42px 48px 48px;
}

.article h2 {
  font-size: 24px;
  margin: 36px 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

.article h2:first-of-type {
  margin-top: 0;
}

.article h3 {
  font-size: 19px;
  margin: 26px 0 10px;
}

.article p {
  margin-bottom: 16px;
}

.cta-panel {
  margin: 40px 0 8px;
  padding: 32px 28px;
  background: var(--navy);
  color: #f7f4ee;
  text-align: center;
  border-top: 3px solid var(--gold);
}

.cta-panel h2 {
  color: #f7f4ee;
  border: none;
  margin: 0 0 12px;
  padding: 0;
}

.cta-panel p {
  color: #d9d2c5;
  max-width: 720px;
  margin: 0 auto 18px;
}

.cta-panel a.btn {
  color: var(--navy);
  text-decoration: none;
}

.cta-panel a.btn:hover {
  color: #ffffff;
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--navy);
  color: #d9d2c5;
  padding: 40px 0 32px;
  margin-top: 8px;
}

.footer-verify {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(201, 162, 39, 0.35);
}

.footer-verify svg {
  width: 28px;
  height: 28px;
  color: var(--gold);
  flex-shrink: 0;
  margin-top: 4px;
}

.footer-verify p {
  color: #e8e4d8;
  margin: 0;
}

.footer-copy {
  font-size: 13px;
  color: #9aa3ad;
  text-align: center;
  margin: 0;
}

/* ---------- 下载脚本 loading ---------- */
@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* ---------- 响应式 ---------- */
@media (max-width: 860px) {
  .card-row,
  .platform-list {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    font-size: 28px;
  }

  .article {
    padding: 28px 20px 32px;
  }

  .download-lead {
    padding: 28px 20px;
  }

  .nav-bar {
    justify-content: center;
    text-align: center;
  }

  .site-nav {
    justify-content: center;
    width: 100%;
  }
}

@media (max-width: 560px) {
  .hero {
    padding: 44px 0 52px;
  }

  .section {
    padding: 40px 0;
  }

  .section-title {
    font-size: 24px;
  }

  .step {
    flex-direction: column;
  }
}