Redesign login page with feature carousel

frontend/src/App.css

@@ -4125,30 +4125,49 @@ input[type="checkbox"] {
 
 .login-page-wrapper {
   min-height: 100vh;
-  background: radial-gradient(circle at 12% 10%, rgba(37, 99, 235, 0.15) 0%, transparent 42%),
+  background:
-    radial-gradient(circle at 90% 0%, rgba(14, 165, 233, 0.14) 0%, transparent 45%),
+    linear-gradient(135deg, rgba(15, 23, 42, 0.04), rgba(37, 99, 235, 0.07)),
     linear-gradient(180deg, #f8fafc 0%, #e8eefc 100%);
   display: flex;
   align-items: center;
   justify-content: center;
-  padding: 24px;
+  padding: 28px;
+}
+
+.login-shell {
+  width: min(1180px, 100%);
+  min-height: min(720px, calc(100vh - 56px));
+  display: grid;
+  grid-template-columns: minmax(340px, 420px) minmax(0, 1fr);
+  background: #ffffff;
+  border: 1px solid #dbe4f3;
+  border-radius: 18px;
+  box-shadow: 0 18px 38px rgba(15, 23, 42, 0.14);
+  overflow: hidden;
 }
 
 .login-card {
-  width: min(420px, 94vw);
+  width: 100%;
   background: #ffffff;
-  border: 1px solid #dbe4f3;
+  border-right: 1px solid #dbe4f3;
-  border-radius: 16px;
+  padding: 34px;
-  box-shadow: 0 24px 52px rgba(15, 23, 42, 0.16);
-  padding: 24px;
   display: flex;
   flex-direction: column;
-  gap: 14px;
+  justify-content: center;
+  gap: 16px;
+}
+
+.login-card--checking {
+  width: min(420px, 94vw);
+  border: 1px solid #dbe4f3;
+  border-radius: 14px;
+  box-shadow: var(--shadow-panel);
 }
 
 .login-card h2 {
   margin: 0;
-  font-size: 1.4em;
+  font-size: 1.55em;
+  line-height: 1.25;
   color: var(--color-text-primary);
 }
 
@@ -4166,7 +4185,7 @@ input[type="checkbox"] {
   color: var(--color-accent-strong);
   font-weight: 700;
   font-size: 0.75em;
-  letter-spacing: 0.4px;
+  letter-spacing: 0;
   padding: 4px 10px;
 }
 
@@ -4196,7 +4215,7 @@ input[type="checkbox"] {
 .login-card input,
 .login-card select {
   width: 100%;
-  padding: 10px 12px;
+  padding: 11px 12px;
   border: 1px solid #cbd5e1;
   border-radius: 8px;
   font-size: 0.95em;
@@ -4240,6 +4259,149 @@ input[type="checkbox"] {
   color: #1e3a8a;
 }
 
+.login-submit-btn {
+  min-height: 42px;
+  border-radius: 8px;
+  font-weight: 700;
+}
+
+.login-visual-panel {
+  min-width: 0;
+  display: grid;
+  grid-template-rows: auto minmax(0, 1fr) auto;
+  gap: 18px;
+  padding: 34px;
+  background: #f8fafc;
+}
+
+.login-slide-copy {
+  max-width: 680px;
+}
+
+.login-slide-copy span {
+  color: var(--color-accent-strong);
+  font-size: 0.82em;
+  font-weight: 700;
+}
+
+.login-slide-copy h3 {
+  margin: 8px 0 8px;
+  color: var(--color-text-primary);
+  font-size: 1.55em;
+  line-height: 1.25;
+}
+
+.login-slide-copy p {
+  margin: 0;
+  color: var(--color-text-secondary);
+  line-height: 1.58;
+}
+
+.login-slide-frame {
+  position: relative;
+  min-height: 0;
+  border: 1px solid #cbd5e1;
+  border-radius: 12px;
+  overflow: hidden;
+  background: #0f172a;
+}
+
+.login-slide-image {
+  position: absolute;
+  inset: 0;
+  width: 100%;
+  height: 100%;
+  object-fit: cover;
+  opacity: 0;
+  transform: scale(1.018);
+  transition: opacity 0.45s ease, transform 0.7s ease;
+}
+
+.login-slide-image.active {
+  opacity: 1;
+  transform: scale(1);
+}
+
+.login-slide-dots {
+  display: flex;
+  justify-content: center;
+  gap: 8px;
+}
+
+.login-slide-dots button {
+  width: 30px;
+  height: 8px;
+  border: 1px solid #93a4bd;
+  border-radius: 999px;
+  background: #e2e8f0;
+  padding: 0;
+  cursor: pointer;
+}
+
+.login-slide-dots button.active {
+  width: 42px;
+  border-color: var(--color-accent);
+  background: var(--color-accent);
+}
+
+@media (max-width: 920px) {
+  .login-page-wrapper {
+    align-items: flex-start;
+    overflow-y: auto;
+  }
+
+  .login-shell {
+    min-height: auto;
+    grid-template-columns: 1fr;
+  }
+
+  .login-card {
+    border-right: none;
+    border-bottom: 1px solid #dbe4f3;
+    padding: 24px;
+  }
+
+  .login-visual-panel {
+    min-height: 420px;
+    padding: 24px;
+  }
+}
+
+@media (max-width: 560px) {
+  .login-page-wrapper {
+    padding: 12px;
+  }
+
+  .login-shell {
+    border-radius: 12px;
+  }
+
+  .login-card,
+  .login-visual-panel {
+    padding: 18px;
+  }
+
+  .login-card h2,
+  .login-slide-copy h3 {
+    font-size: 1.28em;
+  }
+
+  .login-visual-panel {
+    min-height: 360px;
+  }
+}
+
+@media (prefers-reduced-motion: reduce) {
+  .login-slide-image {
+    transition: opacity 0.15s ease;
+    transform: none;
+  }
+
+  .login-slide-image.active {
+    transform: none;
+  }
+}
+
 .user-role-chip {
   display: inline-flex;
   align-items: center;

frontend/src/App.jsx

@@ -2095,7 +2095,7 @@ function App() {
     if (!authChecked) {
         return (
             <div className="login-page-wrapper">
-                <div className="login-card">
+                <div className="login-card login-card--checking">
                     <h2>正在检查登录状态...</h2>
                     <p>请稍候，系统正在验证会话。</p>
                 </div>

frontend/src/LoginPage.jsx

@@ -1,5 +1,26 @@
 import React, { useEffect, useState } from 'react';
 import apiClient from './api/client';
+import clusterDeliveryUrl from './assets/login/cluster-delivery.svg';
+import processingArchitectureUrl from './assets/login/processing-architecture.svg';
+import systemOverviewUrl from './assets/login/system-overview.svg';
+
+const loginSlides = [
+  {
+    title: '统一管理雷达数据生产流程',
+    description: '覆盖源数据入库、精密轨道匹配、生产编排、成果目录和地图分析，形成可审计的工程闭环。',
+    image: systemOverviewUrl,
+  },
+  {
+    title: '面向 D-InSAR / SBAS 的处理链路',
+    description: '扫描与解析先行，生产任务进入队列，运行结果和失败归因统一登记，便于复查和补跑。',
+    image: processingArchitectureUrl,
+  },
+  {
+    title: '支持集群生产与成果交付',
+    description: '主服务器负责资产、权限和审计，生产节点承担受控处理服务，结果回传后进入交付申请与下载流程。',
+    image: clusterDeliveryUrl,
+  },
+];
 
 const LoginPage = ({ onLoginSuccess }) => {
   const [username, setUsername] = useState('');
@@ -7,6 +28,7 @@ const LoginPage = ({ onLoginSuccess }) => {
   const [loading, setLoading] = useState(false);
   const [message, setMessage] = useState('');
   const [licenseStatus, setLicenseStatus] = useState(null);
+  const [activeSlide, setActiveSlide] = useState(0);
 
   useEffect(() => {
     const checkLicense = async () => {
@@ -20,6 +42,13 @@ const LoginPage = ({ onLoginSuccess }) => {
     checkLicense();
   }, []);
 
+  useEffect(() => {
+    const timer = window.setInterval(() => {
+      setActiveSlide((current) => (current + 1) % loginSlides.length);
+    }, 5200);
+    return () => window.clearInterval(timer);
+  }, []);
+
   const handleSubmit = async (event) => {
     event.preventDefault();
     setLoading(true);
@@ -48,10 +77,11 @@ const LoginPage = ({ onLoginSuccess }) => {
 
   return (
     <div className="login-page-wrapper">
-      <div className="login-card">
+      <div className="login-shell">
+        <section className="login-card" aria-label="系统登录">
           <div className="login-card-header">
-          <div className="login-brand-tag">InSAR</div>
+            <div className="login-brand-tag">InSAR Production</div>
-          <h2>管理系统登录</h2>
+            <h2>雷达数据生产管理系统</h2>
             <p className="login-subtitle">内网受控访问，请使用管理员分配的账号登录。</p>
           </div>
 
@@ -84,7 +114,7 @@ const LoginPage = ({ onLoginSuccess }) => {
                 required
               />
             </label>
-          <button type="submit" className="primary-btn" disabled={loading}>
+            <button type="submit" className="primary-btn login-submit-btn" disabled={loading}>
               {loading ? '登录中...' : '登录'}
             </button>
           </form>
@@ -99,6 +129,37 @@ const LoginPage = ({ onLoginSuccess }) => {
             <strong>提示：</strong>
             <span>首次部署请确认已在 `.env` 配置管理员账号与密码。</span>
           </div>
+        </section>
+
+        <section className="login-visual-panel" aria-label="系统能力介绍">
+          <div className="login-slide-copy">
+            <span>系统能力</span>
+            <h3>{loginSlides[activeSlide].title}</h3>
+            <p>{loginSlides[activeSlide].description}</p>
+          </div>
+          <div className="login-slide-frame">
+            {loginSlides.map((slide, index) => (
+              <img
+                key={slide.title}
+                src={slide.image}
+                alt={slide.title}
+                className={`login-slide-image ${index === activeSlide ? 'active' : ''}`}
+                aria-hidden={index !== activeSlide}
+              />
+            ))}
+          </div>
+          <div className="login-slide-dots" aria-label="切换系统介绍图">
+            {loginSlides.map((slide, index) => (
+              <button
+                key={slide.title}
+                type="button"
+                className={index === activeSlide ? 'active' : ''}
+                aria-label={`查看${slide.title}`}
+                onClick={() => setActiveSlide(index)}
+              />
+            ))}
+          </div>
+        </section>
       </div>
     </div>
   );

frontend/src/assets/login/cluster-delivery.svg

@@ -0,0 +1,78 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="1440" height="900" viewBox="0 0 1440 900" role="img" aria-labelledby="title desc">
+  <title id="title">Cluster and Result Delivery Architecture</title>
+  <desc id="desc">A cluster processing and result delivery architecture for radar data production.</desc>
+  <defs>
+    <linearGradient id="bg3" x1="0" y1="0" x2="1" y2="1">
+      <stop offset="0" stop-color="#111827"/>
+      <stop offset="0.48" stop-color="#123b61"/>
+      <stop offset="1" stop-color="#14532d"/>
+    </linearGradient>
+    <filter id="shadow3" x="-20%" y="-20%" width="140%" height="140%">
+      <feDropShadow dx="0" dy="18" stdDeviation="20" flood-color="#020617" flood-opacity="0.3"/>
+    </filter>
+  </defs>
+  <rect width="1440" height="900" fill="url(#bg3)"/>
+  <g opacity="0.2" stroke="#d1fae5" stroke-width="1.5" fill="none">
+    <path d="M100 190h1240M100 360h1240M100 530h1240M100 700h1240"/>
+    <path d="M230 90v720M430 90v720M630 90v720M830 90v720M1030 90v720M1230 90v720"/>
+  </g>
+  <g transform="translate(130 104)" filter="url(#shadow3)" font-family="Segoe UI, Arial, sans-serif">
+    <rect width="1180" height="692" rx="22" fill="#f8fafc"/>
+    <text x="54" y="76" font-size="32" font-weight="700" fill="#0f172a">集群生产与成果交付</text>
+    <text x="54" y="110" font-size="18" fill="#475569">主服务器统一管理任务，子服务器只承担受控生产服务，成果回传后进入交付流程。</text>
+    <g transform="translate(70 172)">
+      <rect width="280" height="370" rx="18" fill="#e0f2fe" stroke="#7dd3fc"/>
+      <text x="34" y="52" font-size="25" font-weight="700" fill="#0f172a">主服务器</text>
+      <text x="34" y="88" font-size="17" fill="#475569">资产、任务、用户、审计</text>
+      <g transform="translate(34 132)" fill="#0f172a">
+        <rect width="212" height="42" rx="8" fill="#ffffff" stroke="#bfdbfe"/>
+        <text x="18" y="27" font-size="16">任务队列</text>
+        <rect y="62" width="212" height="42" rx="8" fill="#ffffff" stroke="#bfdbfe"/>
+        <text x="18" y="89" font-size="16">成果目录</text>
+        <rect y="124" width="212" height="42" rx="8" fill="#ffffff" stroke="#bfdbfe"/>
+        <text x="18" y="151" font-size="16">用户权限</text>
+      </g>
+    </g>
+    <g transform="translate(460 172)">
+      <rect width="280" height="370" rx="18" fill="#ecfdf5" stroke="#86efac"/>
+      <text x="34" y="52" font-size="25" font-weight="700" fill="#0f172a">生产节点</text>
+      <text x="34" y="88" font-size="17" fill="#475569">LandSAR / Gamma 执行</text>
+      <g transform="translate(34 132)">
+        <rect width="92" height="92" rx="14" fill="#10b981"/>
+        <text x="26" y="54" font-size="18" font-weight="700" fill="#ffffff">1.6</text>
+        <rect x="120" width="92" height="92" rx="14" fill="#059669"/>
+        <text x="146" y="54" font-size="18" font-weight="700" fill="#ffffff">GPU</text>
+        <rect y="120" width="212" height="46" rx="10" fill="#ffffff" stroke="#bbf7d0"/>
+        <text x="18" y="149" font-size="16" fill="#166534">受控 Worker 服务</text>
+      </g>
+    </g>
+    <g transform="translate(850 172)">
+      <rect width="260" height="370" rx="18" fill="#fef3c7" stroke="#fcd34d"/>
+      <text x="34" y="52" font-size="25" font-weight="700" fill="#0f172a">成果交付</text>
+      <text x="34" y="88" font-size="17" fill="#475569">申请、打包、下载</text>
+      <g transform="translate(34 132)">
+        <path d="M0 0h180l44 48v118H0z" fill="#ffffff" stroke="#fde68a"/>
+        <path d="M180 0v48h44" fill="#fde68a"/>
+        <text x="22" y="68" font-size="18" font-weight="700" fill="#92400e">交付包</text>
+        <text x="22" y="105" font-size="15" fill="#78350f">D-InSAR / SBAS</text>
+        <text x="22" y="132" font-size="15" fill="#78350f">LT-1 / GF3 正射</text>
+      </g>
+    </g>
+    <g fill="none" stroke="#2563eb" stroke-width="6" stroke-linecap="round" stroke-linejoin="round">
+      <path d="M368 322h70"/>
+      <path d="M758 322h70"/>
+      <path d="M438 358h-70"/>
+      <path d="M828 358h-70"/>
+    </g>
+    <g fill="#2563eb">
+      <path d="M438 322l-14-10v20z"/>
+      <path d="M828 322l-14-10v20z"/>
+      <path d="M368 358l14-10v20z"/>
+      <path d="M758 358l14-10v20z"/>
+    </g>
+    <g transform="translate(70 584)">
+      <rect width="1040" height="56" rx="12" fill="#0f172a"/>
+      <text x="28" y="36" font-size="18" fill="#dbeafe">最小化子服务器代码暴露：仅部署受控执行服务、运行环境和任务数据目录；业务资产与权限仍由主服务器统一管理。</text>
+    </g>
+  </g>
+</svg>

frontend/src/assets/login/processing-architecture.svg

@@ -0,0 +1,85 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="1440" height="900" viewBox="0 0 1440 900" role="img" aria-labelledby="title desc">
+  <title id="title">Production Pipeline Architecture</title>
+  <desc id="desc">A pipeline diagram for SAR data parsing, precise orbit matching, D-InSAR and SBAS production, and catalog registration.</desc>
+  <defs>
+    <linearGradient id="bg2" x1="0" y1="0" x2="1" y2="1">
+      <stop offset="0" stop-color="#082f49"/>
+      <stop offset="0.48" stop-color="#0f3b5f"/>
+      <stop offset="1" stop-color="#164e63"/>
+    </linearGradient>
+    <filter id="shadow2" x="-20%" y="-20%" width="140%" height="140%">
+      <feDropShadow dx="0" dy="16" stdDeviation="18" flood-color="#020617" flood-opacity="0.24"/>
+    </filter>
+  </defs>
+  <rect width="1440" height="900" fill="url(#bg2)"/>
+  <g opacity="0.18" fill="none" stroke="#bae6fd" stroke-width="2">
+    <path d="M132 170C345 72 525 75 672 178s335 103 564-4"/>
+    <path d="M80 700c203-126 385-132 545-18s378 113 735-3"/>
+  </g>
+  <g transform="translate(140 110)" filter="url(#shadow2)">
+    <rect width="1160" height="680" rx="20" fill="#f8fafc"/>
+    <text x="48" y="72" font-family="Segoe UI, Arial, sans-serif" font-size="32" font-weight="700" fill="#0f172a">生产处理链路</text>
+    <text x="48" y="106" font-family="Segoe UI, Arial, sans-serif" font-size="18" fill="#475569">增量扫描优先，解析与预览异步，生产结果统一登记到成果目录。</text>
+    <g transform="translate(64 170)" font-family="Segoe UI, Arial, sans-serif">
+      <g>
+        <rect width="184" height="122" rx="14" fill="#dbeafe" stroke="#93c5fd"/>
+        <text x="24" y="44" font-size="23" font-weight="700" fill="#0f172a">源数据扫描</text>
+        <text x="24" y="80" font-size="16" fill="#475569">增量过滤</text>
+      </g>
+      <g transform="translate(240 0)">
+        <rect width="184" height="122" rx="14" fill="#e0f2fe" stroke="#7dd3fc"/>
+        <text x="24" y="44" font-size="23" font-weight="700" fill="#0f172a">元数据解析</text>
+        <text x="24" y="80" font-size="16" fill="#475569">XML / TAR / ZIP</text>
+      </g>
+      <g transform="translate(480 0)">
+        <rect width="184" height="122" rx="14" fill="#dcfce7" stroke="#86efac"/>
+        <text x="24" y="44" font-size="23" font-weight="700" fill="#0f172a">精轨匹配</text>
+        <text x="24" y="80" font-size="16" fill="#475569">自动补链</text>
+      </g>
+      <g transform="translate(720 0)">
+        <rect width="184" height="122" rx="14" fill="#fef3c7" stroke="#fcd34d"/>
+        <text x="24" y="44" font-size="23" font-weight="700" fill="#0f172a">生产编排</text>
+        <text x="24" y="80" font-size="16" fill="#475569">队列 / Worker</text>
+      </g>
+      <g transform="translate(960 0)">
+        <rect width="132" height="122" rx="14" fill="#fee2e2" stroke="#fca5a5"/>
+        <text x="24" y="44" font-size="23" font-weight="700" fill="#0f172a">成果</text>
+        <text x="24" y="80" font-size="16" fill="#475569">登记交付</text>
+      </g>
+      <g fill="none" stroke="#2563eb" stroke-width="5" stroke-linecap="round">
+        <path d="M192 61h38"/>
+        <path d="M432 61h38"/>
+        <path d="M672 61h38"/>
+        <path d="M912 61h38"/>
+      </g>
+    </g>
+    <g transform="translate(64 380)" font-family="Segoe UI, Arial, sans-serif">
+      <rect width="500" height="190" rx="16" fill="#0f172a"/>
+      <text x="30" y="48" font-size="24" font-weight="700" fill="#f8fafc">D-InSAR / SBAS 生产</text>
+      <text x="30" y="84" font-size="17" fill="#cbd5e1">LandSAR、Gamma、SARscape 按任务类型接入</text>
+      <g transform="translate(30 120)">
+        <rect width="112" height="36" rx="18" fill="#2563eb"/>
+        <text x="24" y="24" font-size="15" fill="#ffffff">配对</text>
+        <rect x="130" width="112" height="36" rx="18" fill="#0ea5e9"/>
+        <text x="154" y="24" font-size="15" fill="#ffffff">处理</text>
+        <rect x="260" width="112" height="36" rx="18" fill="#10b981"/>
+        <text x="284" y="24" font-size="15" fill="#ffffff">登记</text>
+      </g>
+      <rect x="600" width="492" height="190" rx="16" fill="#eef2ff"/>
+      <text x="630" y="48" font-size="24" font-weight="700" fill="#0f172a">可审计运行记录</text>
+      <text x="630" y="84" font-size="17" fill="#475569">成功、部分成功、失败原因与日志明细独立记录</text>
+      <g fill="#2563eb">
+        <circle cx="648" cy="132" r="8"/>
+        <circle cx="648" cy="164" r="8"/>
+        <circle cx="846" cy="132" r="8"/>
+        <circle cx="846" cy="164" r="8"/>
+      </g>
+      <g font-size="16" fill="#334155">
+        <text x="668" y="137">任务批次</text>
+        <text x="668" y="169">失败归因</text>
+        <text x="866" y="137">成果目录</text>
+        <text x="866" y="169">交付申请</text>
+      </g>
+    </g>
+  </g>
+</svg>

frontend/src/assets/login/system-overview.svg

@@ -0,0 +1,81 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="1440" height="900" viewBox="0 0 1440 900" role="img" aria-labelledby="title desc">
+  <title id="title">Radar Data Production System Overview</title>
+  <desc id="desc">An engineering-style system overview with satellite acquisition, asset catalog, processing, result management, and map analysis.</desc>
+  <defs>
+    <linearGradient id="bg" x1="0" y1="0" x2="1" y2="1">
+      <stop offset="0" stop-color="#0f172a"/>
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