:root{
  --bg:#0b1020;
  --panel:#0f1730;
  --muted:#8fa3c8;
  --text:#e7eefc;
  --brand:#6aa6ff;
  --accent:#66e3c4;
  --border: rgba(255,255,255,0.08);
  --shadow: 0 8px 20px rgba(0,0,0,.25);
  --radius: 16px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,Arial}
a{color:inherit;text-decoration:none}
.container{max-width:1180px;margin:0 auto;padding:0 20px}

/* 顶栏 */
.topbar{ background: #24A7FCFF; border-bottom:1px solid rgba(255,255,255,.10); }
.nav-wrap{display:flex;align-items:center;justify-content:space-between;min-height:64px}
.brand{display:flex;align-items:center;gap:12px}
.logo{width:32px;height:32px;filter:drop-shadow(0 2px 6px rgba(0,0,0,.4))}
.brand-name{
  font-weight: 700;
  letter-spacing: .5px;
  color: #eef4ff;
}
.nav{display:flex;align-items:center;gap:18px}
.nav a{
  padding: 8px 12px;
  border-radius: 10px;
  color: #c9d6e8;
}
.nav a:hover{
  background: rgba(255,255,255,.08);
  color: #ffffff;
}
.nav a.active{ background:#3a6ea5; color:#fff; border:1px solid rgba(255,255,255,.12); }
.btn.ghost{
  border: 1px solid rgba(255,255,255,.14);
  color: #eef4ff;
  background: rgba(255,255,255,.04);
}
.btn.ghost:hover{
  background: rgba(255,255,255,.08);
}

/* 主页：上方两张卡片 */
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:28px 0}
.hero-card{background:linear-gradient(180deg, rgba(20,30,60,.85), rgba(20,30,60,.6));border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);position:relative;min-height:180px}
.hero-card h2{margin:0 0 8px}
.bg-hint{position:absolute;right:16px;bottom:14px;color:var(--muted);font-size:12px}

/* 分割标题 */
.section-title h3{margin:8px 0 12px;font-size:20px;color:#cfe0ff}

/* 模块区：五块卡片 */
.modules{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.module-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:16px 14px;box-shadow:var(--shadow)}
.module-card h4{margin:0 0 10px;color:var(--accent)}
.module-card ul{margin:0;padding-left:18px;color:var(--muted)}

/* 宽管道占位（你手绘的下方两条） */
.wide-pipe{margin:22px 0 36px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px}
.pipe-card{background:var(--panel);border:1px dashed var(--brand);border-radius:var(--radius);padding:18px;text-align:center;color:#cfe0ff}
.pipe-arrow{color:var(--muted);font-size:28px;text-align:center}

/* 通用页面段落 */
.page-section{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:22px;margin:24px 0;box-shadow:var(--shadow)}
.placeholder-panel{margin-top:12px;border:1px dashed var(--border);border-radius:12px;padding:20px;color:var(--muted)}
.auth-cards{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.auth-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:18px}
.placeholder-form{margin-top:10px;border:1px dashed var(--border);border-radius:10px;padding:16px;color:var(--muted)}

/* 响应式 */
@media (max-width: 1100px){
  .modules{grid-template-columns:repeat(3,1fr)}
}
@media (max-width: 760px){
  .hero-grid{grid-template-columns:1fr}
  .modules{grid-template-columns:repeat(2,1fr)}
  .nav{gap:10px}
}
@media (max-width: 480px){
  .modules{grid-template-columns:1fr}
}

.input {
  width:100%;
  padding:10px 12px;
  border-radius:10px;
  border:1px solid var(--border);
  background:#0b1330;
  color:var(--text);
  outline:none;
}
.input:focus {
  border-color:rgba(106,166,255,.6);
}
.btn-primary {
  padding:10px 14px;
  border-radius:12px;
  background:linear-gradient(145deg,#6aa6ff66,#66e3c466);
  border:1px solid var(--border);
  color:var(--text);
  cursor:pointer;
}
.alert{
  margin-top:12px;
  padding:10px 12px;
  border-radius:10px;
  border:1px solid rgba(255,100,100,.25);
  background: rgba(255,100,100,.08);
  color:#ff9b9b;
}
.hidden{ display:none; }


/* 下载进度浮层 */
.dl-progress {
  position: fixed;
  right: 16px;
  bottom: 16px;
  width: 360px;
  max-width: calc(100vw - 32px);
  background: #fff;
  color: #333;
  border-radius: 12px;
  box-shadow: 0 8px 26px rgba(0,0,0,.15);
  padding: 14px 16px 16px;
  z-index: 9999;
  font-size: 14px;
}
.dl-progress.hidden { display: none; }
.dl-progress-title { font-weight: 600; margin-bottom: 8px; }
.dl-progress-bar {
  height: 8px;
  background: #eee;
  border-radius: 999px;
  overflow: hidden;
  position: relative;
}
.dl-progress-fill {
  height: 100%;
  width: 0%;
  background: var(--primary, #3b82f6);
  transition: width .2s ease;
}
.dl-progress-text { margin-top: 8px; color: #666; line-height: 1.4; }
.dl-progress-cancel {
  position: absolute;
  top: 6px;
  right: 8px;
  width: 28px; height: 28px; line-height: 24px;
  border: none; background: transparent; color: #999;
  font-size: 18px; cursor: pointer; border-radius: 50%;
}
.dl-progress-cancel:hover { background: rgba(0,0,0,.06); color: #333; }

/* 不确定进度：条纹动画 */
.dl-progress.indeterminate .dl-progress-fill {
  width: 40%;
  animation: dl-indeterminate 1.1s infinite linear;
  background-image: linear-gradient(90deg, rgba(255,255,255,.4) 25%, rgba(255,255,255,0) 25%, rgba(255,255,255,0) 50%, rgba(255,255,255,.4) 50%, rgba(255,255,255,.4) 75%, rgba(255,255,255,0) 75%);
  background-size: 40px 8px;
}
@keyframes dl-indeterminate {
  from { transform: translateX(-60%); }
  to   { transform: translateX(160%); }
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 10px;
}
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.table{
  border-collapse: collapse;
  width: 100%;
  background: rgba(255,255,255,0.04);
}
.table th, .table td{
  border: 1px solid var(--border);
  padding: 8px 12px;
  font-size: 14px;
  color: var(--text);
}
.table thead th{
  background: rgba(255,255,255,0.06);
  font-weight: 700;
}


.upload-group {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
  margin-bottom: 12px;
}

.upload-block {
  text-align: center;
}

.upload-btn {
  background-color: #3f689e;
  color: #fff;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 16px;
  cursor: pointer;
  display: inline-block;
  transition: background-color 0.3s ease;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  text-align: center;
}

.upload-btn:hover {
  background-color: #0056b3;
}

.filename-text {
  font-size: 14px;
  color: #666;
  margin-top: 6px;
}
.btn.upload-btn {
  background-color: #3f689e;
  color: white;
  border: none;
  border-radius: 8px;
  padding: 10px 20px;
  font-size: 15px;
  transition: background 0.3s ease;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.btn.upload-btn:hover {
  background-color: #0056b3;
}
.img-preview{
  border:1px solid var(--border);
  border-radius:10px;
  background: rgba(255,255,255,0.04);
  padding:4px;
  width:100%;
  height:auto;
  max-height:360px;
  object-fit:contain;
}

/* 只保留这一份（或保留你文件中后面的那份），不要嵌到 .img-preview 里 */
.modal .modal-content{
  background-color:#f7f9fc;
  border-radius:12px;
  padding:24px;
  box-shadow:0 8px 32px rgba(0,0,0,0.2);
  color:#111;
}


/* 只影响空间分析区的按钮样式，不改全局 .btn-primary */
.spatial-analysis-group .card-grid {
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.spatial-analysis-group .card {
  padding: 10px 10px;  /* 可略微紧凑，和其它卡片保持一致 */
}
.spatial-analysis-group .btn-primary {
  width: 100%;
  height: 48px;         /* 推荐 44~56px 都可，看喜好 */
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 600;
  border-radius: 12px;
  text-align: center;
  box-sizing: border-box;
  white-space: normal;
  word-break: break-all;
  /* 颜色沿用全局btn-primary, 无需重复设置 */
  margin: 0;
  padding: 0;
  /* 覆盖默认btn-primary的padding，不然高宽难一致 */
}
.spatial-analysis-group .btn-primary:hover {
  filter: brightness(1.06);
}

.result-box {
  margin-top: 12px;
  padding: 10px;
  border-radius: 6px;
  background-color: rgba(255,255,255,0.08);
  color: #f4dada;
  white-space: pre-wrap;
  font-size: 14px;
}
.result-box img {
  margin-top: 10px;
  max-width: 100%;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0,0,0,0.2);
}

/* 导航栏样式 */
.workflow-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0;
}

.workflow-nav button {
  padding: 6px 12px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  font-size: 13px;
}

.workflow-nav button.active {
  background: #3cc;
  color: #111;
}

/* Step 面板显示/隐藏 */
.step-panel {
  display: none;
}

.step-panel.is-active {
  display: block;
}

/* 让新的主面板居中一点 */
.workflow-main {
  max-width: 1320px;
  margin: 0 auto;
}

/* Step1 内部两列布局 */
.step1-columns {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1.7fr);
  gap: 16px;
}

.step1-col {
  min-width: 0;
}

/* ===== 3D 弹窗：正式主题（只作用于 feature3DModal）===== */

/* 弹窗整体文字 */
#feature3DModal { color: var(--text); }
#feature3DModal .amodal__title,
#feature3DModal label,
#feature3DModal p,
#feature3DModal small,
#feature3DModal h4,
#feature3DModal h5 {
  color: var(--text);
}
#feature3DModal .muted { color: var(--muted) !important; }

/* 表单控件（深色） */
#feature3DModal input[type="file"],
#feature3DModal select,
#feature3DModal textarea {
  background: rgba(11, 19, 48, 0.85);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
}

/* file input 按钮（兼容不同浏览器） */
#feature3DModal input[type="file"]::file-selector-button,
#feature3DModal input[type="file"]::-webkit-file-upload-button {
  background: linear-gradient(145deg,#6aa6ff66,#66e3c466);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 8px 12px;
  cursor: pointer;
}

/* 下拉选项（避免 option 白字白底/黑字黑底问题） */
#feature3DModal select option {
  background: #fff;
  color: #111;
}

/* Top15 表格（暗色） */
#feature3DModal .table {
  background: rgba(255,255,255,0.03);
  border-collapse: collapse;
}
#feature3DModal .table th,
#feature3DModal .table td {
  color: var(--text);
  border: 1px solid var(--border);
}
#feature3DModal .table thead th {
  background: rgba(255,255,255,0.06);
}

/* 结果卡片如果是白底：卡片内标题要变深色（否则白底白字看不见） */
#feature3DModal .image-panel {
  background: #fff;
  border: 1px solid rgba(0,0,0,0.08);
}
#feature3DModal .image-panel h5 {
  color: #111;
}

/* 图片预览区域 */
#feature3DModal .img-preview {
  background: rgba(0,0,0,0.04);
  border: 1px solid rgba(0,0,0,0.12);
  border-radius: 10px;
}

/* 关闭按钮 */
#feature3DModal #feature3DClose { color: var(--text); }

#feature3DModal .image-panel{
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
}
#feature3DModal .image-panel h5{ color: var(--text); }
#feature3DModal .img-preview{
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
}


/* ===== 首页亮色门户风格 ===== */
.home-landing{
  margin: 0 -20px;
}

.home-hero{
  background: linear-gradient(90deg, #3b82f6 0%, #57c7ef 100%);
  padding: 88px 20px 96px;
  text-align: center;
}

.home-hero-inner{
  max-width: 980px;
  margin: 0 auto;
  color: #ffffff;
}

.home-hero h1{
  margin: 0 0 20px;
  font-size: 52px;
  line-height: 1.2;
  font-weight: 800;
  color: #ffffff;
}

.home-hero p{
  margin: 0 auto;
  max-width: 900px;
  font-size: 22px;
  line-height: 1.8;
  color: rgba(255,255,255,0.95);
}

.home-actions{
  margin-top: 34px;
  display: flex;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
}

.hero-btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 170px;
  height: 52px;
  padding: 0 24px;
  border-radius: 12px;
  font-size: 17px;
  font-weight: 700;
  transition: all .25s ease;
}

.hero-btn-primary{
  background: #ffffff;
  color: #2f6fe4;
  box-shadow: 0 8px 20px rgba(0,0,0,.12);
}

.hero-btn-primary:hover{
  transform: translateY(-2px);
}

.hero-btn-secondary{
  background: transparent;
  color: #ffffff;
  border: 1px solid rgba(255,255,255,.45);
}

.hero-btn-secondary:hover{
  background: rgba(255,255,255,.08);
}

.home-section{
  background: #f3f6fb;
  padding: 56px 20px 10px;
}

.home-section:last-child{
  padding-bottom: 80px;
}

.home-section-title{
  margin: 0 auto 30px;
  text-align: center;
  font-size: 28px;
  font-weight: 800;
  color: #16345f;
}

.quick-grid{
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.quick-card{
  background: #ffffff;
  border-radius: 18px;
  min-height: 110px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #2f80ed;
  font-size: 28px;
  font-weight: 700;
  box-shadow: 0 8px 24px rgba(20,40,80,.08);
  transition: transform .25s ease, box-shadow .25s ease;
}

.quick-card:hover{
  transform: translateY(-4px);
  box-shadow: 0 14px 28px rgba(20,40,80,.12);
}

.feature-grid{
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.feature-card{
  background: #ffffff;
  border-radius: 18px;
  padding: 26px 24px;
  box-shadow: 0 8px 24px rgba(20,40,80,.08);
}

.feature-card h3{
  margin: 0 0 12px;
  font-size: 24px;
  color: #16345f;
}

.feature-card p{
  margin: 0;
  font-size: 17px;
  line-height: 1.8;
  color: #5b6f8f;
}

/* 页脚亮色适配：首页时更协调 */
.home-landing + .footer,
.footer{
  position: relative;
}

/* 响应式 */
@media (max-width: 992px){
  .quick-grid{
    grid-template-columns: repeat(2, 1fr);
  }
  .feature-grid{
    grid-template-columns: repeat(2, 1fr);
  }
  .home-hero h1{
    font-size: 40px;
  }
  .home-hero p{
    font-size: 18px;
  }
}

@media (max-width: 640px){
  .quick-grid,
  .feature-grid{
    grid-template-columns: 1fr;
  }
  .home-hero{
    padding: 64px 16px 72px;
  }
  .home-hero h1{
    font-size: 32px;
  }
  .home-hero p{
    font-size: 16px;
  }
  .quick-card{
    font-size: 22px;
  }
}

html, body{
  margin: 0;
  padding: 0;
  background: #f3f6fb !important;
}

body{
  min-height: 100vh;
}
.footer{
  background: #24A7FCFF !important;
  border: none !important;
  margin: 0 !important;
  padding: 0 !important;
  color: #d7e2f1 !important;
}

.footer .container{
  width: 100% !important;
  max-width: none !important;
  margin: 0 auto !important;
  padding: 18px 0 !important;
  text-align: center !important;
  background: transparent !important;
}

.footer p{
  margin: 0 !important;
  padding: 0 !important;
  width: 100%;
  text-align: center !important;
  color: inherit !important;
}