:root {
    --ip-bg: #fafaf7;
    --ip-bg-alt: #eff4fb;
    --ip-surface: #ffffff;
    --ip-surface-soft: #f5f6f2;
    --ip-border: #e6e6df;
    --ip-text: #2c2c2a;
    --ip-text-soft: #5f5e5a;
    --ip-text-muted: #8a8984;
    --ip-blue: #2b6fc0;
    --ip-blue-dark: #143b66;
    --ip-blue-light: #e8f1fb;
    --ip-orange: #f2a93b;
    --ip-orange-dark: #e0622e;
    --ip-success: #1d9e75;
    --ip-warning: #ba7517;
    --ip-danger: #d14545;
    --ip-shadow: 0 10px 30px rgba(20, 59, 102, 0.08);
    --ip-shadow-soft: 0 4px 18px rgba(20, 59, 102, 0.06);
    --ip-radius: 14px;
    --ip-radius-lg: 20px;
    --ip-container: 1200px;
}

html, body {
    background: var(--ip-bg);
    color: var(--ip-text);
    font-family: 'Noto Sans SC', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
}

a {
    color: inherit;
}

.ip-navbar,
.navbar {
    background: var(--ip-blue-dark);
    color: #fff;
    border-bottom: none;
    box-shadow: 0 4px 18px rgba(20, 59, 102, 0.08);
}

.ip-navbar .logo,
.navbar .logo {
    color: #fff;
    font-weight: 800;
    letter-spacing: 0.02em;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.ip-navbar .logo .logo-icon,
.navbar .logo .logo-icon {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
}

.ip-navbar .nav-links a,
.navbar .nav-links a {
    color: rgba(255, 255, 255, 0.78);
}

.ip-navbar .nav-links a.active,
.ip-navbar .nav-links a:hover,
.navbar .nav-links a.active,
.navbar .nav-links a:hover {
    color: #fff;
}

.btn,
.btn-primary,
.btn-secondary,
.btn-outline,
.btn-white {
    border-radius: 12px;
    font-weight: 700;
    transition: transform 0.16s ease, box-shadow 0.16s ease, background 0.16s ease, color 0.16s ease;
}

.btn:hover,
.btn-primary:hover,
.btn-secondary:hover,
.btn-outline:hover,
.btn-white:hover {
    transform: translateY(-1px);
}

.btn-primary {
    background: var(--ip-blue);
    color: #fff;
}

.btn-primary:hover {
    background: var(--ip-blue-dark);
}

.btn-secondary {
    background: #fff;
    color: var(--ip-blue);
    border: 1px solid rgba(43, 111, 192, 0.22);
}

.btn-secondary:hover {
    background: var(--ip-blue-light);
}

.btn-white {
    background: #fff;
    color: var(--ip-blue-dark);
}

.btn-outline,
.btn-outline-white {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.26);
    color: #fff;
}

.btn-outline:hover,
.btn-outline-white:hover {
    background: rgba(255, 255, 255, 0.08);
}

.ip-shell {
    max-width: var(--ip-container);
    margin: 0 auto;
}

.ip-hero {
    background: linear-gradient(135deg, var(--ip-blue-dark) 0%, #1d4f86 58%, var(--ip-blue) 100%);
    color: #fff;
    position: relative;
    overflow: hidden;
}

.ip-hero::after {
    content: '';
    position: absolute;
    inset: auto -140px -140px auto;
    width: 380px;
    height: 380px;
    background: radial-gradient(circle, rgba(242, 169, 59, 0.18), transparent 70%);
    pointer-events: none;
}

.ip-hero-inner {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 48px;
    align-items: center;
    padding: 76px 32px 84px;
}

.ip-kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.86);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 999px;
    padding: 8px 15px;
    font-size: 13px;
}

.ip-hero h1 {
    font-size: clamp(2.8rem, 6vw, 4.4rem);
    line-height: 1.12;
    font-weight: 900;
    letter-spacing: -0.04em;
    margin: 22px 0 18px;
}

.ip-hero p {
    color: rgba(255, 255, 255, 0.84);
    font-size: 18px;
    line-height: 1.8;
    max-width: 520px;
}

.ip-action-row {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 32px;
}

.ip-chip-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
}

.ip-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border-radius: 999px;
    padding: 8px 13px;
    background: #fff;
    color: var(--ip-text);
    font-size: 12px;
    border: 1px solid var(--ip-border);
}

.ip-chip--dark {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    border-color: rgba(255, 255, 255, 0.14);
}

.ip-section {
    padding: 30px 32px;
}

.ip-section--tight {
    padding-top: 0;
}

.ip-section-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 18px;
}

.ip-section-title {
    font-size: 30px;
    font-weight: 900;
    color: var(--ip-blue-dark);
    letter-spacing: -0.03em;
}

.ip-section-subtitle {
    margin-top: 10px;
    font-size: 15px;
    color: var(--ip-text-soft);
    line-height: 1.7;
}

.ip-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
}

.ip-grid-4 {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.ip-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.ip-card {
    background: var(--ip-surface);
    border: 1px solid var(--ip-border);
    border-radius: var(--ip-radius);
    box-shadow: var(--ip-shadow-soft);
    overflow: hidden;
}

.ip-card--pad {
    padding: 22px;
}

.ip-card--soft {
    background: linear-gradient(180deg, #fff 0%, #fcfcfa 100%);
}

.ip-card-title {
    display: flex;
    align-items: center;
    gap: 9px;
    font-size: 18px;
    font-weight: 800;
    color: var(--ip-text);
}

.ip-card-desc {
    color: var(--ip-text-soft);
    font-size: 14px;
    line-height: 1.7;
    margin-top: 12px;
}

.ip-stat-row {
    display: flex;
    background: var(--ip-surface);
    border: 1px solid var(--ip-border);
    border-radius: 16px;
    box-shadow: var(--ip-shadow-soft);
    overflow: hidden;
}

.ip-stat {
    flex: 1;
    text-align: center;
    padding: 18px 10px;
    border-right: 1px solid #efefe9;
}

.ip-stat:last-child {
    border-right: none;
}

.ip-stat-value {
    font-size: 24px;
    font-weight: 900;
    color: var(--ip-blue-dark);
    line-height: 1;
}

.ip-stat-label {
    font-size: 12px;
    color: var(--ip-text-muted);
    margin-top: 8px;
}

.ip-stat-note {
    max-width: 780px;
    margin: 10px auto 0;
    color: var(--ip-text-muted);
    font-size: 12px;
    line-height: 1.7;
    text-align: center;
}

.ip-panel {
    background: var(--ip-surface);
    border: 1px solid var(--ip-border);
    border-radius: var(--ip-radius);
    box-shadow: var(--ip-shadow-soft);
}

.ip-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 18px 22px 0;
}

.ip-panel-body {
    padding: 20px 22px 22px;
}

.ip-badge {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 700;
    background: #eff4fb;
    color: var(--ip-blue);
}

.ip-badge--dark {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
}

.ip-badge--success {
    background: rgba(29, 158, 117, 0.12);
    color: var(--ip-success);
}

.ip-badge--warning {
    background: rgba(186, 117, 23, 0.12);
    color: var(--ip-warning);
}

.ip-badge--danger {
    background: rgba(209, 69, 69, 0.12);
    color: var(--ip-danger);
}

.ip-muted {
    color: var(--ip-text-muted);
}

.ip-list {
    display: grid;
    gap: 12px;
}

.ip-list-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 14px 0;
    border-bottom: 1px solid #f0f0ea;
}

.ip-list-item:last-child {
    border-bottom: none;
}

.ip-avatar {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--ip-blue-dark), var(--ip-blue));
    color: #fff;
    display: grid;
    place-items: center;
    font-weight: 800;
    flex: none;
}

.ip-avatar--light {
    background: #fff;
    color: var(--ip-blue-dark);
    border: 1px solid rgba(20, 59, 102, 0.12);
}

.ip-timeline {
    display: grid;
    gap: 14px;
}

.ip-time-item {
    display: grid;
    grid-template-columns: 18px 1fr;
    gap: 12px;
    align-items: start;
}

.ip-time-dot {
    width: 12px;
    height: 12px;
    margin-top: 6px;
    border-radius: 50%;
    background: var(--ip-blue);
    box-shadow: 0 0 0 4px rgba(43, 111, 192, 0.12);
}

.ip-time-line {
    padding-bottom: 2px;
}

.ip-time-title {
    font-weight: 800;
    color: var(--ip-text);
}

.ip-time-meta {
    margin-top: 3px;
    color: var(--ip-text-soft);
    font-size: 13px;
    line-height: 1.6;
}

.ip-grid-tools {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 14px;
}

.ip-tool-card {
    background: var(--ip-surface);
    border: 1px solid var(--ip-border);
    border-radius: 16px;
    padding: 18px;
    box-shadow: var(--ip-shadow-soft);
}

.ip-tool-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    background: var(--ip-blue-light);
    color: var(--ip-blue);
    font-size: 20px;
}

.ip-tool-title {
    font-size: 16px;
    font-weight: 800;
    margin-top: 14px;
}

.ip-tool-desc {
    margin-top: 10px;
    color: var(--ip-text-soft);
    font-size: 13px;
    line-height: 1.7;
}

.ip-footer {
    background: var(--ip-blue-dark);
    color: rgba(255, 255, 255, 0.76);
    margin-top: 34px;
}

.ip-footer-inner {
    max-width: var(--ip-container);
    margin: 0 auto;
    padding: 34px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.ip-footer-links {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
    font-size: 14px;
}

.ip-fixed-cta {
    position: fixed;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 100%;
    max-width: var(--ip-container);
    background: rgba(255, 255, 255, 0.96);
    border-top: 1px solid var(--ip-border);
    backdrop-filter: blur(12px);
    box-shadow: 0 -6px 18px rgba(20, 59, 102, 0.08);
    z-index: 60;
}

.ip-fixed-cta-inner {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
}

.ip-tabs {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.ip-tab {
    border: 1px solid var(--ip-border);
    background: #fff;
    border-radius: 999px;
    padding: 8px 14px;
    color: var(--ip-text-soft);
    font-size: 13px;
    font-weight: 700;
}

.ip-tab.active {
    background: var(--ip-blue);
    color: #fff;
    border-color: transparent;
}

.ip-workspace {
    display: grid;
    grid-template-columns: 270px 1fr;
    gap: 20px;
}

.ip-sidebar {
    background: var(--ip-surface);
    border: 1px solid var(--ip-border);
    border-radius: 18px;
    box-shadow: var(--ip-shadow-soft);
    padding: 18px;
    position: sticky;
    top: 88px;
    height: fit-content;
}

.ip-sidebar-section {
    margin-bottom: 18px;
}

.ip-sidebar-title {
    font-size: 13px;
    font-weight: 800;
    color: var(--ip-blue-dark);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 10px;
}

.ip-sidebar-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 12px;
    color: var(--ip-text-soft);
    font-size: 14px;
    font-weight: 600;
}

.ip-sidebar-link.active,
.ip-sidebar-link:hover {
    background: var(--ip-blue-light);
    color: var(--ip-blue-dark);
}

.ip-form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px 16px;
}

.ip-input,
.ip-select,
.ip-textarea {
    width: 100%;
    border: 1px solid #dfe3dd;
    background: #fff;
    border-radius: 12px;
    padding: 12px 14px;
    font: inherit;
    color: var(--ip-text);
    outline: none;
}

.ip-input:focus,
.ip-select:focus,
.ip-textarea:focus {
    border-color: rgba(43, 111, 192, 0.45);
    box-shadow: 0 0 0 4px rgba(43, 111, 192, 0.08);
}

.ip-label {
    display: block;
    margin-bottom: 6px;
    font-size: 13px;
    font-weight: 700;
    color: var(--ip-text-soft);
}

.ip-table {
    width: 100%;
    border-collapse: collapse;
}

.ip-table th,
.ip-table td {
    border-bottom: 1px solid #f0f0ea;
    text-align: left;
    padding: 12px 10px;
    font-size: 14px;
    vertical-align: top;
}

.ip-table th {
    color: var(--ip-text-muted);
    font-weight: 800;
}

@media (max-width: 1024px) {
    .ip-hero-inner,
    .ip-workspace {
        grid-template-columns: 1fr;
    }

    .ip-grid-4,
    .ip-grid-tools {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 768px) {
    .ip-hero-inner,
    .ip-section,
    .ip-footer-inner {
        padding-left: 16px;
        padding-right: 16px;
    }

    .ip-hero h1 {
        font-size: 2.5rem;
    }

    .ip-hero p {
        font-size: 16px;
    }

    .ip-grid-2,
    .ip-grid-3,
    .ip-grid-4,
    .ip-grid-tools {
        grid-template-columns: 1fr;
    }

    .ip-section-title {
        font-size: 24px;
    }

    .ip-stat-row {
        flex-direction: column;
    }

    .ip-stat {
        border-right: none;
        border-bottom: 1px solid #efefe9;
    }

    .ip-stat:last-child {
        border-bottom: none;
    }

    .ip-fixed-cta {
        max-width: none;
        width: 100%;
        left: 0;
        transform: none;
    }
}