/* =============================================================================
   软叙空间（vest 72 / 海南链沁网络科技有限公司）- Figma 1:1 复刻
   源文件: figma.com/design/w1yEwtRyWACCPhy3QIh0mh  node 204634:6364
   画板: 1611 x 5320

   >=1611px   完全按 Figma 绝对坐标渲染，像素级还原
   768-1610px 整体等比缩放（zoom），版式不变
   <768px     单栏流式布局（移动端适配，非原稿版式）

   注意：不引 Google Fonts —— 展示机在国内（47.107.183.96），fonts.googleapis.com
   会被墙掉导致首屏阻塞。正文一律走系统 CJK 字体栈。
   ========================================================================== */

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

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

body { margin: 0; background: #fbf4e4; overflow-x: hidden; }

h1, h2, p { margin: 0; font-weight: inherit; }

img { display: block; }

a { color: inherit; text-decoration: none; }

:root {
  --f-han: "PingFang SC", "Source Han Sans SC", "Noto Sans SC", "Hiragino Sans GB",
           "Microsoft YaHei", sans-serif;

  --c-bg-top:  #fbf4e4;  /* 画板渐变起点 = 导航条底色 */
  --c-bg-btm:  #e9d4a5;  /* 画板渐变终点 */
  --c-ink:     #000;
  --c-nav-ink: #282626;
  --c-word:    #191717;
  --c-cta-bg:  #10100e;
}

/* 渐变铺满整个视口宽度：顶色与导航条同色，所以 .stage 两侧留白不会露边 */
.canvas {
  background: linear-gradient(180deg, var(--c-bg-top) 54.327%, var(--c-bg-btm) 100%);
}

.stage { width: 1611px; margin: 0 auto; }

.page {
  position: relative;
  width: 1611px;
  height: 5320px;
}

/* section 不参与定位，子元素直接相对 .page 绝对定位 */
.page section { position: static; }

/* ============================== 顶部导航 ============================== */
/* 原稿导航 frame 起点 x=-17（画板外），这里改为贴左满宽，子元素用画板绝对坐标，
   渲染结果与原稿逐像素一致，同时消掉右侧 17px 的渐变缝。 */
.nav {
  position: absolute;
  left: 0; top: 0;
  width: 1611px; height: 132px;
  background: var(--c-bg-top);
}

.nav-mark {
  position: absolute;
  left: 15px; top: 1px;
  width: 104px; height: 106px;
  border-radius: 12px;
  object-fit: cover;
}

.nav-word {
  position: absolute;
  left: 143px; top: 23px;
  width: 317px; height: 87px;
  font-family: var(--f-han);
  font-size: 64px; font-weight: 400; line-height: 87px;
  letter-spacing: 1.92px;
  color: var(--c-word);
  white-space: nowrap;
}

.nav-links {
  position: absolute;
  left: 460px; top: 48px;
  height: 33px;
  display: flex;
  align-items: center;
  gap: 60px;
}

.nav-links a {
  font-family: var(--f-han);
  font-size: 22px; font-weight: 700; line-height: 33px;
  letter-spacing: 0.66px;
  color: var(--c-nav-ink);
  white-space: nowrap;
  transition: opacity .2s;
}

.nav-links a:hover { opacity: .6; }

.nav-cta {
  position: absolute;
  left: 1129px; top: 38px;
  width: 120px; height: 56px;
  border-radius: 40px;
  background: var(--c-cta-bg);
  color: #fff;
  font-family: var(--f-han);
  font-size: 20px; font-weight: 700; line-height: 56px;
  text-align: center;
  transition: opacity .2s;
}

.nav-cta:hover { opacity: .85; }

/* ============================== 正文文案 ============================== */
/* 原稿字号 48 / 行距 58 / 字距 1.44 —— 行距与字距写死，保证换行点与 Figma 一致 */
.txt {
  position: absolute;
  font-family: var(--f-han);
  font-size: 48px; font-weight: 400; line-height: 58px;
  letter-spacing: 1.44px;
  color: var(--c-ink);
}

.txt-1 { left: 155px; top:  323px; width:  857px; }
.txt-2 { left: 205px; top: 2402px; width:  726px; }
.txt-3 { left: 568px; top: 3323px; width: 1012px; }
.txt-4 { left: 418px; top: 4016px; width:  748px; }

/* ============================== 截图组件 ============================== */
.rx {
  position: absolute;
  object-fit: cover;
  max-width: none;
}

.rx-3 { left: 1047px; top:  260px; width: 478px; height: 1000px; }
.rx-2 { left:   77px; top: 1096px; width: 557px; height: 1102px; }
.rx-1 { left: 1007px; top: 2111px; width: 467px; height:  996px; }
.rx-4 { left:   77px; top: 3018px; width: 396px; height:  818px; }
.rx-5 { left:  221px; top: 4494px; width: 347px; height:  733px; }
.rx-6 { left:  957px; top: 4494px; width: 402px; height:  716px; }

/* ======================= 768-1610px 等比缩放 ======================= */
@media (max-width: 1610px) { .stage { zoom: .99; } }
@media (max-width: 1500px) { .stage { zoom: .93; } }
@media (max-width: 1400px) { .stage { zoom: .86; } }
@media (max-width: 1300px) { .stage { zoom: .80; } }
@media (max-width: 1200px) { .stage { zoom: .74; } }
@media (max-width: 1100px) { .stage { zoom: .68; } }
@media (max-width: 1000px) { .stage { zoom: .61; } }
@media (max-width:  900px) { .stage { zoom: .55; } }
@media (max-width:  820px) { .stage { zoom: .49; } }

/* ================= <768px 单栏流式布局（移动端适配，非原稿版式） ================= */
@media (max-width: 767px) {

  .stage { zoom: 1; width: 100%; }

  .page {
    width: 100%;
    height: auto;
    padding: 96px 24px 72px;
  }

  .page section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 28px;
    margin-bottom: 56px;
  }

  .s4 { margin-bottom: 0; }

  /* 导航压成固定高度的普通栏 */
  .nav {
    position: absolute;
    left: 0; top: 0;
    width: 100%; height: 72px;
  }

  .nav-mark { left: 14px; top: 10px; width: 52px; height: 53px; }

  .nav-word {
    left: 76px; top: 10px;
    width: auto; height: 53px;
    font-size: 28px; line-height: 53px; letter-spacing: .84px;
  }

  /* 窄屏放不下导航项，收起，只留下载按钮；页脚里有联系方式 */
  .nav-links { display: none; }

  .nav-cta {
    left: auto; right: 14px; top: 18px;
    width: 88px; height: 38px;
    font-size: 15px; line-height: 38px;
  }

  .txt,
  .rx {
    position: static;
    left: auto; top: auto;
  }

  .txt {
    width: 100%;
    font-size: 17px; line-height: 32px; letter-spacing: .5px;
  }

  /* 原稿的硬换行在窄屏会切得很碎，统一按容器宽度自然回流 */
  .txt br { display: none; }

  .rx {
    width: 100%;
    max-width: 320px;
    height: auto;
  }
}

/* ================================ 页脚 ================================ */
.site-footer {
  background: #000;
  color: rgba(255, 255, 255, .72);
  font-family: var(--f-han);
  padding: 40px 24px;
}

.site-footer__inner {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
  line-height: 1.9;
}

.site-footer__corp {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
}

.site-footer__addr,
.site-footer__contact {
  font-size: 13px;
}

.site-footer__sep {
  margin: 0 10px;
  color: rgba(255, 255, 255, .35);
}

.site-footer__icp {
  margin-top: 8px;
  font-size: 13px;
}

.site-footer__icp a {
  color: rgba(255, 255, 255, .72);
  transition: color .2s;
}

.site-footer__icp a:hover { color: #fff; }

@media (max-width: 767px) {
  .site-footer { padding: 28px 16px; }
  .site-footer__corp { font-size: 15px; }
  .site-footer__addr,
  .site-footer__contact,
  .site-footer__icp { font-size: 12px; }
  /* 窄屏把「手机号 | 邮箱」拆成两行，竖线隐藏 */
  .site-footer__contact span { display: block; }
  .site-footer__sep { display: none; }
}