:root {
    --bg: #f4f6f2;
    --surface: #ffffff;
    --ink: #17201b;
    --muted: #68726c;
    --line: #dfe5df;
    --accent: #176b4c;
    --accent-dark: #0f4f38;
    --accent-soft: #e4f2eb;
    --danger: #b13b35;
    --danger-soft: #f9e8e6;
    --warning: #8a6416;
    --warning-soft: #f9f0d8;
    --shadow: 0 16px 44px rgba(24, 39, 31, .08);
}

* { box-sizing: border-box; }
html { background: var(--bg); }
body {
    margin: 0;
    color: var(--ink);
    background:
        radial-gradient(circle at 85% -10%, rgba(45, 139, 101, .13), transparent 30rem),
        var(--bg);
    font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
    line-height: 1.5;
}
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
.shell { width: min(1180px, calc(100% - 36px)); margin: 0 auto; }
.topbar {
    position: sticky;
    top: 0;
    z-index: 10;
    border-bottom: 1px solid rgba(223, 229, 223, .82);
    background: rgba(244, 246, 242, .86);
    backdrop-filter: blur(16px);
}
.topbar-inner { height: 68px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; gap: 11px; align-items: center; font-weight: 800; letter-spacing: -.02em; }
.brand-mark {
    width: 34px; height: 34px; display: grid; place-items: center;
    color: white; background: var(--accent); border-radius: 10px;
    box-shadow: 0 8px 18px rgba(23, 107, 76, .22);
}
.nav { display: flex; gap: 24px; color: var(--muted); font-size: 14px; }
.nav a:hover { color: var(--accent); }
.main-content { min-height: calc(100vh - 138px); padding: 52px 0 64px; }
.hero, .task-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; margin-bottom: 28px; }
.hero h1, .task-head h1 { margin: 3px 0 8px; font-size: clamp(34px, 5vw, 58px); line-height: 1.02; letter-spacing: -.055em; }
.hero p, .task-head p { margin: 0; color: var(--muted); }
.eyebrow { color: var(--accent); font-size: 12px; font-weight: 800; letter-spacing: .15em; }
.health { display: flex; align-items: center; gap: 9px; padding: 10px 14px; border: 1px solid var(--line); border-radius: 999px; background: rgba(255,255,255,.75); font-size: 13px; color: var(--muted); }
.pulse { width: 8px; height: 8px; border-radius: 50%; background: #2aa66f; box-shadow: 0 0 0 5px rgba(42,166,111,.12); }
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 22px; }
.stat { min-height: 114px; padding: 20px; display: flex; flex-direction: column; justify-content: space-between; border: 1px solid var(--line); border-radius: 18px; background: rgba(255,255,255,.75); }
.stat span { color: var(--muted); font-size: 13px; }
.stat strong { font-size: 34px; letter-spacing: -.04em; }
.panel { margin-top: 20px; overflow: hidden; border: 1px solid var(--line); border-radius: 22px; background: var(--surface); box-shadow: var(--shadow); }
.panel-heading { padding: 22px 24px; display: flex; justify-content: space-between; align-items: center; gap: 20px; border-bottom: 1px solid var(--line); }
.panel-heading h2 { margin: 0; font-size: 19px; letter-spacing: -.02em; }
.panel-heading p { margin: 4px 0 0; color: var(--muted); font-size: 13px; }
.upload-form { display: grid; grid-template-columns: minmax(300px, 1fr) 230px auto; gap: 16px; align-items: end; padding: 24px; }
.file-drop {
    min-height: 92px; display: flex; align-items: center; gap: 14px; padding: 18px;
    border: 1px dashed #a9bbb0; border-radius: 16px; background: #f8faf8; cursor: pointer;
}
.file-drop:hover { border-color: var(--accent); background: var(--accent-soft); }
.file-drop input { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
.file-icon { width: 42px; height: 42px; display: grid; place-items: center; flex: 0 0 auto; border-radius: 12px; color: var(--accent); background: var(--accent-soft); font-size: 24px; }
.file-drop strong, .file-drop small { display: block; }
.file-drop small, .number-field small { color: var(--muted); margin-top: 4px; font-size: 12px; }
.number-field span { display: block; margin-bottom: 7px; font-size: 13px; font-weight: 700; }
input[type=text], input[type=password] {
    width: 100%; height: 46px; padding: 0 13px; border: 1px solid #cfd7d1;
    border-radius: 11px; outline: none; background: white;
}
input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(23,107,76,.12); }
.button { min-height: 44px; padding: 0 17px; border: 0; border-radius: 11px; cursor: pointer; font-weight: 750; white-space: nowrap; }
.button.primary { color: white; background: var(--accent); box-shadow: 0 9px 20px rgba(23,107,76,.18); }
.button.primary:hover { background: var(--accent-dark); }
.button.ghost { color: var(--ink); border: 1px solid var(--line); background: white; }
.button.danger-button { color: var(--danger); border: 1px solid #edc7c3; background: var(--danger-soft); }
.button.wide { width: 100%; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { padding: 13px 16px; color: var(--muted); background: #fafbfa; text-align: left; font-size: 12px; font-weight: 700; }
td { padding: 16px; border-top: 1px solid #edf0ed; vertical-align: middle; }
td small { display: block; margin-top: 3px; color: var(--muted); }
tbody tr:hover { background: #fbfcfb; }
.code-pill { display: inline-flex; padding: 4px 8px; border-radius: 7px; background: #edf1ee; font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 12px; }
.badge { display: inline-flex; padding: 5px 9px; border-radius: 999px; font-size: 12px; font-weight: 800; }
.badge.large { padding: 9px 14px; font-size: 13px; }
.badge.success { color: var(--accent-dark); background: var(--accent-soft); }
.badge.danger { color: var(--danger); background: var(--danger-soft); }
.badge.warning { color: var(--warning); background: var(--warning-soft); }
.badge.active { color: #245990; background: #e8f1fb; }
.badge.muted { color: #65716a; background: #edf0ee; }
.text-link { color: var(--accent); font-weight: 750; }
.empty-state { padding: 54px 20px; text-align: center; color: var(--muted); }
.alert { margin: 16px 0; padding: 13px 16px; border-radius: 12px; font-size: 14px; }
.alert.success { color: var(--accent-dark); background: var(--accent-soft); border: 1px solid #c8e4d5; }
.alert.danger { color: var(--danger); background: var(--danger-soft); border: 1px solid #edc7c3; }
.alert.warning { color: var(--warning); background: var(--warning-soft); border: 1px solid #ead8aa; }
.breadcrumb { display: flex; gap: 10px; margin-bottom: 26px; color: var(--muted); font-size: 13px; }
.breadcrumb a { color: var(--accent); }
.progress-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 22px 0; }
.progress-card { padding: 18px; border: 1px solid var(--line); border-radius: 16px; background: white; }
.progress-card > div:first-child { display: flex; justify-content: space-between; margin-bottom: 14px; }
.progress-card span { color: var(--muted); font-size: 13px; }
.progress-track { height: 7px; overflow: hidden; border-radius: 99px; background: #e8ece9; }
.progress-track span { display: block; height: 100%; border-radius: inherit; background: var(--accent); }
.action-row { display: flex; gap: 10px; flex-wrap: wrap; margin: 20px 0; }
.error-cell { max-width: 360px; color: var(--danger); font-size: 12px; word-break: break-word; }
.login-wrap { min-height: 66vh; display: grid; place-items: center; }
.login-card { width: min(430px, 100%); padding: 34px; border: 1px solid var(--line); border-radius: 24px; background: white; box-shadow: var(--shadow); }
.login-card h1 { margin: 7px 0; font-size: 32px; letter-spacing: -.04em; }
.login-card > p { margin: 0 0 24px; color: var(--muted); }
.form-stack { display: grid; gap: 16px; }
.form-stack label > span { display: block; margin-bottom: 7px; font-size: 13px; font-weight: 700; }
.footer { min-height: 70px; display: grid; place-items: center; color: var(--muted); border-top: 1px solid var(--line); font-size: 12px; }

@media (max-width: 900px) {
    .stat-grid { grid-template-columns: repeat(2, 1fr); }
    .upload-form { grid-template-columns: 1fr 1fr; }
    .file-drop { grid-column: 1 / -1; }
}
@media (max-width: 640px) {
    .shell { width: min(100% - 24px, 1180px); }
    .main-content { padding-top: 32px; }
    .hero, .task-head { align-items: flex-start; flex-direction: column; }
    .stat-grid, .progress-grid, .upload-form { grid-template-columns: 1fr; }
    .upload-form { padding: 18px; }
    .panel-heading { padding: 18px; }
    .nav { gap: 14px; }
    .health { display: none; }
}