:root{
  --primary-deep:#0A2540;
  --gold:#D4A017;
  --warm-orange:#F1785B;
  --pale-linen:#F5F0E6;
  --white:#FFFFFF;
  --ink:#1A1E24;
  --slate:#5A6472;
  --warm-line:#E3D9C4;
  --success:#2A9D6E;
  --info:#1E6FD9;
  --radius-lg:24px;
  --radius-md:14px;
  --radius-sm:8px;
  --content-max:1440px;
  --header-h:80px;
  --container-pad:24px;
  --font-head:'PingFang SC','Microsoft YaHei',sans-serif;
  --font-body:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --font-mono:'JetBrains Mono','SFMono-Regular',Consolas,monospace;
  --transition-fast:0.2s ease;
  --transition-base:0.35s ease;
}

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

html{
  scroll-behavior:smooth;
}

@media(prefers-reduced-motion:reduce){
  html{
    scroll-behavior:auto;
  }
  *,*::before,*::after{
    animation-duration:0.001s !important;
    animation-iteration-count:1 !important;
    transition-duration:0.001s !important;
  }
}

body{
  font-family:var(--font-body);
  background:var(--primary-deep);
  color:var(--ink);
  line-height:1.8;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}

img{
  display:block;
  max-width:100%;
}

a{
  color:var(--info);
  text-decoration:none;
  transition:color var(--transition-fast);
}

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

button{
  font-family:inherit;
  cursor:pointer;
  border:none;
  background:none;
}

ul,ol{
  list-style:none;
}

:focus-visible{
  outline:3px solid var(--gold);
  outline-offset:2px;
  border-radius:4px;
}

.skip-link{
  position:absolute;
  left:-9999px;
  top:8px;
  z-index:2000;
  background:var(--gold);
  color:var(--primary-deep);
  font-weight:700;
  padding:10px 20px;
  border-radius:var(--radius-md);
}

.skip-link:focus{
  left:8px;
}

/* ===== 坐标网格背景 ===== */
.coordinate-sky{
  position:relative;
  background:
    radial-gradient(circle at 20% 30%, rgba(212,160,23,0.08), transparent 40%),
    linear-gradient(rgba(212,160,23,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(212,160,23,0.06) 1px, transparent 1px),
    var(--primary-deep);
  background-size:auto, 32px 32px, 32px 32px, auto;
}

.coordinate-sky::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  bottom:0;
  background:radial-gradient(ellipse at 70% 10%, rgba(212,160,23,0.12), transparent 50%);
  pointer-events:none;
}

/* ===== 头部 ===== */
.site-header{
  position:relative;
  z-index:1000;
  background:var(--primary-deep);
  border-bottom:1px solid rgba(212,160,23,0.25);
}

.header-shell{
  max-width:var(--content-max);
  margin:0 auto;
  padding:0 var(--container-pad);
  height:var(--header-h);
  display:grid;
  grid-template-columns:280px 1fr auto;
  align-items:center;
  gap:24px;
}

/* 品牌坐标 */
.brand-coordinate{
  display:flex;
  align-items:center;
  min-width:0;
}

.brand-core{
  display:flex;
  align-items:center;
  gap:14px;
  color:var(--white);
  text-decoration:none;
}

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

.brand-mark{
  position:relative;
  width:42px;
  height:42px;
  flex-shrink:0;
  display:flex;
  align-items:center;
  justify-content:center;
}

.brand-mark-ring{
  width:36px;
  height:36px;
  border:2px solid var(--gold);
  border-radius:50%;
  position:relative;
  display:block;
}

.brand-mark-ring::before{
  content:"";
  position:absolute;
  top:-3px;
  left:-3px;
  right:-3px;
  bottom:-3px;
  border-radius:50%;
  border:1px solid rgba(212,160,23,0.35);
}

.brand-mark-dot{
  position:absolute;
  width:8px;
  height:8px;
  background:var(--gold);
  border-radius:50%;
  top:50%;
  left:50%;
  transform:translate(-50%,-50%);
  box-shadow:0 0 12px rgba(212,160,23,0.7);
}

.brand-text-group{
  display:flex;
  flex-direction:column;
  line-height:1.2;
}

.brand-name{
  font-family:var(--font-head);
  font-weight:900;
  font-size:20px;
  letter-spacing:1px;
  color:var(--white);
}

.brand-sub{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:0.08em;
  color:var(--gold);
  margin-top:2px;
}

/* 命令栏导航 */
.command-rail-wrapper{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:20px;
}

.command-rail{
  display:flex;
  align-items:center;
  gap:4px;
}

.command-link{
  position:relative;
  font-family:var(--font-body);
  font-size:14px;
  font-weight:500;
  color:rgba(255,255,255,0.78);
  padding:10px 12px;
  border-radius:var(--radius-sm);
  transition:color var(--transition-fast),background var(--transition-fast);
  text-decoration:none;
  white-space:nowrap;
}

.command-link::before{
  content:"";
  position:absolute;
  top:50%;
  left:-1px;
  width:3px;
  height:0;
  background:var(--gold);
  border-radius:0 3px 3px 0;
  transform:translateY(-50%);
  transition:height var(--transition-fast);
}

.command-link:hover{
  color:var(--gold);
  background:rgba(212,160,23,0.08);
}

.command-link:hover::before,
.command-link[aria-current="page"]::before{
  height:18px;
}

.command-link[aria-current="page"]{
  color:var(--gold);
}

/* 用户区 */
.user-chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  border:1px solid rgba(212,160,23,0.5);
  border-radius:999px;
  padding:7px 18px;
  font-size:14px;
  font-weight:600;
  color:var(--gold);
  text-decoration:none;
  transition:all var(--transition-fast);
  background:rgba(212,160,23,0.06);
}

.user-chip:hover{
  background:var(--gold);
  color:var(--primary-deep);
  border-color:var(--gold);
}

.user-chip-dot{
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--success);
  box-shadow:0 0 6px rgba(42,157,110,0.7);
}

.user-chip-text{
  font-family:var(--font-body);
}

/* 移动导航按钮 */
.nav-trigger{
  display:none;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  width:44px;
  height:44px;
  border-radius:var(--radius-sm);
  border:1px solid rgba(212,160,23,0.4);
  background:transparent;
  gap:5px;
  padding:0;
}

.nav-trigger-box{
  display:flex;
  flex-direction:column;
  gap:4px;
}

.nav-trigger-line{
  display:block;
  width:20px;
  height:2px;
  background:var(--gold);
  border-radius:2px;
  transition:all var(--transition-fast);
}

.nav-trigger[aria-expanded="true"] .nav-trigger-line:nth-child(1){
  transform:translateY(6px) rotate(45deg);
}

.nav-trigger[aria-expanded="true"] .nav-trigger-line:nth-child(2){
  opacity:0;
}

.nav-trigger[aria-expanded="true"] .nav-trigger-line:nth-child(3){
  transform:translateY(-6px) rotate(-45deg);
}

/* 移动导航面板 */
.nav-panel{
  display:none;
}

/* ===== 页脚 ===== */
.site-footer{
  position:relative;
  background:var(--primary-deep);
  color:rgba(255,255,255,0.75);
  border-top:1px solid rgba(212,160,23,0.3);
}

.footer-topline{
  height:3px;
  background:linear-gradient(90deg, var(--gold), var(--warm-orange), transparent);
}

.footer-shell{
  max-width:var(--content-max);
  margin:0 auto;
  padding:56px var(--container-pad) 28px;
}

.footer-main-grid{
  display:grid;
  grid-template-columns:1.3fr 1fr 0.8fr 1.4fr;
  gap:48px;
  padding-bottom:40px;
}

.footer-brand-name{
  font-family:var(--font-head);
  font-weight:900;
  font-size:24px;
  color:var(--white);
  letter-spacing:1px;
  margin-bottom:2px;
}

.footer-brand-sub{
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--gold);
  letter-spacing:0.06em;
  margin-bottom:14px;
}

.footer-about{
  font-size:14px;
  line-height:1.7;
  color:rgba(255,255,255,0.6);
  max-width:280px;
}

.footer-heading{
  font-family:var(--font-head);
  font-weight:700;
  font-size:14px;
  letter-spacing:0.08em;
  color:var(--gold);
  text-transform:uppercase;
  margin-bottom:16px;
  position:relative;
  padding-bottom:8px;
}

.footer-heading::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:28px;
  height:2px;
  background:var(--gold);
  border-radius:2px;
}

.footer-list li{
  font-size:14px;
  line-height:2;
  color:rgba(255,255,255,0.7);
}

.footer-links li{
  margin-bottom:8px;
}

.footer-links a{
  display:inline-block;
  font-size:14px;
  color:rgba(255,255,255,0.7);
  text-decoration:none;
  position:relative;
  padding-left:16px;
  transition:color var(--transition-fast),padding-left var(--transition-fast);
}

.footer-links a::before{
  content:"+";
  position:absolute;
  left:0;
  top:50%;
  transform:translateY(-50%);
  color:var(--gold);
  font-family:var(--font-mono);
  font-size:13px;
}

.footer-links a:hover{
  color:var(--gold);
  padding-left:20px;
}

.footer-trust-text{
  font-size:13px;
  line-height:1.8;
  color:rgba(255,255,255,0.58);
  border-left:3px solid rgba(212,160,23,0.5);
  padding-left:14px;
}

.footer-bottom{
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap:12px;
  border-top:1px solid rgba(212,160,23,0.18);
  padding-top:20px;
  font-family:var(--font-mono);
  font-size:13px;
  color:rgba(255,255,255,0.5);
}

.footer-location{
  font-family:var(--font-mono);
  color:rgba(212,160,23,0.7);
  letter-spacing:0.04em;
}

/* ===== 通用容器 ===== */
.page-container{
  max-width:var(--content-max);
  margin:0 auto;
  padding:0 var(--container-pad);
}

/* ===== 通用按钮 ===== */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-body);
  font-weight:600;
  font-size:15px;
  padding:12px 28px;
  border-radius:999px;
  text-decoration:none;
  transition:all var(--transition-fast);
  border:1px solid transparent;
}

.btn-primary{
  background:var(--warm-orange);
  color:var(--primary-deep);
}

.btn-primary:hover{
  background:var(--gold);
  color:var(--primary-deep);
}

.btn-secondary{
  border-color:var(--gold);
  color:var(--gold);
  background:transparent;
}

.btn-secondary:hover{
  background:var(--gold);
  color:var(--primary-deep);
}

/* ===== 面包屑 ===== */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  gap:6px;
  font-family:var(--font-mono);
  font-size:13px;
  color:rgba(255,255,255,0.6);
  padding:16px 0 8px;
}

.breadcrumb a{
  color:var(--gold);
  text-decoration:none;
}

.breadcrumb a:hover{
  color:var(--warm-orange);
}

.breadcrumb span{
  color:rgba(255,255,255,0.4);
}

/* ===== 胶囊标签 ===== */
.pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-family:var(--font-mono);
  font-size:12px;
  padding:4px 14px;
  border-radius:999px;
  border:1px solid transparent;
  line-height:1.6;
  white-space:nowrap;
}

.pill-gold{
  border-color:var(--gold);
  color:var(--gold);
  background:rgba(212,160,23,0.08);
}

.pill-orange{
  border-color:var(--warm-orange);
  color:var(--warm-orange);
  background:rgba(241,120,91,0.1);
}

.pill-slate{
  border-color:rgba(255,255,255,0.25);
  color:rgba(255,255,255,0.7);
  background:rgba(255,255,255,0.03);
}

.pill-success{
  border-color:var(--success);
  color:var(--success);
  background:rgba(42,157,110,0.1);
}

/* ===== 坐标交叉线 ===== */
.crosshair-hit{
  position:relative;
}

.crosshair-hit::before,
.crosshair-hit::after{
  content:"";
  position:absolute;
  pointer-events:none;
  opacity:0;
  transition:opacity var(--transition-fast);
  z-index:2;
}

.crosshair-hit::before{
  top:50%;
  left:-8px;
  right:-8px;
  height:1px;
  background:linear-gradient(90deg, transparent, var(--gold), transparent);
  transform:translateY(-50%);
}

.crosshair-hit::after{
  left:50%;
  top:-8px;
  bottom:-8px;
  width:1px;
  background:linear-gradient(180deg, transparent, var(--gold), transparent);
  transform:translateX(-50%);
}

.crosshair-hit:hover::before,
.crosshair-hit:hover::after{
  opacity:0.6;
}

/* ===== 滚动显现 ===== */
.reveal{
  opacity:0;
  transform:translateY(16px);
  transition:opacity 0.6s ease, transform 0.6s ease;
  will-change:opacity, transform;
}

.reveal.is-visible{
  opacity:1;
  transform:translateY(0);
}

@media(prefers-reduced-motion:reduce){
  .reveal{
    opacity:1;
    transform:none;
  }
}

/* ===== 滚动进度条 ===== */
.progress-track{
  position:fixed;
  top:0;
  left:0;
  right:0;
  height:3px;
  background:transparent;
  z-index:1500;
  pointer-events:none;
}

.progress-fill{
  height:100%;
  width:0;
  background:linear-gradient(90deg, var(--gold), var(--warm-orange));
  border-radius:0 3px 3px 0;
  transition:width 0.1s linear;
}

@media(prefers-reduced-motion:reduce){
  .progress-fill{
    transition:none;
  }
}

/* ===== 正文容器 ===== */
.content-section{
  padding:48px 0;
}

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

.section-title{
  font-family:var(--font-head);
  font-weight:900;
  font-size:32px;
  line-height:1.3;
  letter-spacing:0.02em;
  color:var(--primary-deep);
  margin-bottom:16px;
}

.section-subtitle{
  font-family:var(--font-mono);
  font-size:14px;
  color:var(--slate);
  margin-bottom:24px;
  letter-spacing:0.04em;
}

/* ===== 响应式图片容器 ===== */
.visual-frame{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  background:linear-gradient(135deg, rgba(212,160,23,0.12), rgba(10,37,64,0.08));
  min-height:200px;
  border:1px solid var(--warm-line);
}

.visual-frame::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(rgba(212,160,23,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(212,160,23,0.06) 1px, transparent 1px);
  background-size:24px 24px;
  pointer-events:none;
}

.visual-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  position:relative;
  z-index:1;
}

.visual-frame-tall{
  min-height:360px;
}

/* ===== 响应式断点 ===== */
@media(max-width:1200px){
  .header-shell{
    grid-template-columns:240px 1fr auto;
  }
  .footer-main-grid{
    grid-template-columns:1fr 1fr;
    gap:32px;
  }
}

@media(max-width:968px){
  .header-shell{
    grid-template-columns:1fr auto;
    height:auto;
    padding-top:14px;
    padding-bottom:14px;
  }
  .brand-coordinate{
    grid-column:1;
  }
  .command-rail-wrapper{
    grid-column:2;
  }
  .command-rail{
    display:none;
  }
  .nav-trigger{
    display:flex;
  }
  .nav-panel{
    display:block;
    max-height:0;
    overflow:hidden;
    transition:max-height 0.4s ease;
    background:rgba(10,37,64,0.98);
  }
  .nav-panel[data-open="true"]{
    max-height:480px;
  }
  .nav-panel-inner{
    display:flex;
    flex-direction:column;
    padding:8px 24px 24px;
    gap:4px;
  }
  .nav-panel-inner .command-link{
    color:rgba(255,255,255,0.85);
    font-size:15px;
    padding:12px 16px;
    border-bottom:1px solid rgba(255,255,255,0.06);
  }
  .nav-panel-inner .user-chip{
    margin-top:12px;
  }
}

@media(max-width:768px){
  .footer-main-grid{
    grid-template-columns:1fr;
    gap:28px;
  }
  .footer-bottom{
    flex-direction:column;
    text-align:center;
  }
  .section-title{
    font-size:26px;
  }
}

@media(max-width:480px){
  :root{
    --container-pad:16px;
  }
  .header-shell{
    gap:10px;
  }
  .brand-name{
    font-size:17px;
  }
  .brand-sub{
    font-size:10px;
  }
  .user-chip{
    display:none;
  }
  .nav-panel-inner .user-chip{
    display:inline-flex;
  }
  .command-rail-wrapper{
    grid-column:2;
    display:flex;
    justify-content:flex-end;
  }
  .footer-main-grid{
    grid-template-columns:1fr;
  }
}