@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Noto+Sans+SC:wght@400;500;600;700&display=swap');

/* ============================================
   全局重置
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

/* 统一替代界面 Emoji 的轻量内联 SVG 图标 */
.ui-icon-svg {
    display: inline-block;
    width: 1em;
    height: 1em;
    flex: 0 0 auto;
    vertical-align: -0.14em;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}

:root {
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-md: 18px;
    --font-size-lg: 22px;
    --font-size-xl: 28px;
    --font-size-2xl: 36px;
    --font-size-3xl: 44px;
}

body {
    background-color: #f0fdfa;
    color: #1e293b;
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 30px;
}

@media (max-width: 1200px) {
    .container {
        padding: 0 20px;
    }
}

/* ============================================
   背景粒子
   ============================================ */
.bg-particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.bg-particles .particle {
    position: absolute;
    border-radius: 50%;
    background: rgba(13, 148, 136, 0.05);
    animation: floatParticle 20s infinite ease-in-out;
}

@keyframes floatParticle {
    0%,
    100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.2;
    }
    25% {
        transform: translate(30px, -40px) scale(1.2);
        opacity: 0.5;
    }
    50% {
        transform: translate(-20px, -80px) scale(0.8);
        opacity: 0.3;
    }
    75% {
        transform: translate(40px, -30px) scale(1.1);
        opacity: 0.6;
    }
}

/* ============================================
   导航栏
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 12px 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.04);
    transition: background 0.3s, box-shadow 0.3s;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 2px 30px rgba(0, 0, 0, 0.06);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* ===== 导航栏 Logo（带圆形 M 标志） ===== */
.site-logo {
    display: flex;
    align-items: center;
    gap: 14px;
    text-decoration: none;
}

.brand-mark {
    display: block;
    width: 44px;
    height: 44px;
    flex: 0 0 auto;
}

.logo-orbit {
    position: relative;
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    border: 2px solid #0d9488;
    border-radius: 50%;
    color: #0d9488;
    font-weight: 800;
    font-size: 22px;
    line-height: 1;
    flex-shrink: 0;
}
.logo-orbit::after {
    position: absolute;
    content: "";
    inset: 5px -10px;
    border: 1.5px solid rgba(13, 148, 136, 0.35);
    border-radius: 50%;
    transform: rotate(-28deg);
    pointer-events: none;
}

.logo-text {
    display: flex;
    align-items: baseline;
    gap: 8px;
    font-size: 24px;
    font-weight: 700;
    color: #0f172a;
    white-space: nowrap;
}
.logo-text b {
    color: #0d9488;
    font-weight: 700;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: #1e293b;
    font-size: 15px;
    font-weight: 500;
    transition: color 0.2s;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2.5px;
    background: #0d9488;
    transition: width 0.3s;
    border-radius: 4px;
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-links a:hover,
.nav-links a.active {
    color: #0d9488;
}

/* 主要行动入口：在导航中明确突出“我要测评” */
.nav-links a.nav-eval-link {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 7px 15px;
    border: 1px solid #ee9b72;
    border-radius: 6px;
    color: #fff;
    background: #d97952;
    font-weight: 700;
    box-shadow: 0 5px 14px rgba(217,121,82,.2);
    transition: background .2s, border-color .2s, box-shadow .2s, transform .2s;
}

.nav-links a.nav-eval-link::after {
    display: none;
}

.nav-links a.nav-eval-link:hover,
.nav-links a.nav-eval-link.active {
    color: #fff;
    background: #bd613f;
    border-color: #bd613f;
    box-shadow: 0 8px 20px rgba(189,97,63,.28);
    transform: translateY(-1px);
}

.btn-outline {
    border: 2px solid #0d9488;
    background: transparent;
    color: #0d9488;
    padding: 6px 20px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.25s;
}

.btn-outline:hover {
    background: #0d9488;
    color: white;
    transform: scale(1.04);
}

.btn-primary {
    background: #0d9488;
    border: none;
    color: white;
    padding: 8px 26px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.25s;
}

.btn-primary:hover {
    background: #0f766e;
    transform: scale(1.04);
    box-shadow: 0 8px 28px rgba(13, 148, 136, 0.35);
}

/* ============================================
   轮播区
   ============================================ */
.hero-image-slider {
    position: relative;
    width: 100%;
    height: clamp(320px, 42vw, 560px);
    overflow: hidden;
    margin-top: 0;
    background: linear-gradient(135deg, #f0fdfa, #ccfbf1);
}
.hero-image-track {
    display: flex;
    width: 200%;
    height: 100%;
    transition: transform 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.hero-image-slide {
    position: relative;
    width: 50%;
    height: 100%;
    flex-shrink: 0;
}
.hero-image-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.hero-image-slide::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(13, 148, 136, 0.15);
    pointer-events: none;
    z-index: 1;
}
.hero-image-dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 5;
}
.hero-image-dots .dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: all 0.3s;
    border: 0;
}
.hero-image-dots .dot.active {
    background: #0d9488;
    transform: scale(1.25);
}

@media (max-width: 768px) {
    .hero-image-slider { height: 280px; }
}

/* ============================================
   数据看板
   ============================================ */
.stats-section {
    margin-top: 0px;
    position: relative;
    z-index: 5;
    padding-bottom: 10px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.stat-card {
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(16px);
    padding: 28px 20px;
    border-radius: 24px;
    text-align: center;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.5);
    transition: transform 0.4s, box-shadow 0.4s;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    border-radius: 24px 24px 0 0;
}

.stat-card-1::before {
    background: linear-gradient(90deg, #0d9488, #14b8a6);
}
.stat-card-2::before {
    background: linear-gradient(90deg, #8b5cf6, #a78bfa);
}
.stat-card-3::before {
    background: linear-gradient(90deg, #f59e0b, #fbbf24);
}
.stat-card-4::before {
    background: linear-gradient(90deg, #ef4444, #f87171);
}

.stat-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.06);
}

.stat-number-big {
    font-size: 48px;
    font-weight: 800;
    color: #0d9488;
    line-height: 1.1;
    letter-spacing: -2px;
}

.stat-card-2 .stat-number-big { color: #7c3aed; }
.stat-card-3 .stat-number-big { color: #d97706; }
.stat-card-4 .stat-number-big { color: #dc2626; }

.stat-number-big .number {
    font-size: 52px;
}

.stat-label {
    font-size: 16px;
    color: #64748b;
    font-weight: 500;
    margin-top: 6px;
}

/* ============================================
   Section 头部
   ============================================ */
.section-header {
    text-align: center;
    margin-bottom: 32px;
}

.section-title {
    font-size: 34px;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 4px;
}

.section-title i {
    color: #0d9488;
    margin-right: 8px;
}

.section-sub {
    font-size: 17px;
    color: #94a3b8;
}

/* ============================================
   5C 完整版（层次丰富，不AI）
   ============================================ */
.feature-5c-section {
    padding: 60px 24px 80px;
    background: #f0fdfa;
    position: relative;
    overflow: hidden;
}
.feature-5c-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 20% 30%, rgba(13, 148, 136, 0.04) 0%, transparent 60%),
        radial-gradient(circle at 80% 70%, rgba(13, 148, 136, 0.03) 0%, transparent 60%);
    pointer-events: none;
    z-index: 0;
}

.feature-5c-container {
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}
.feature-5c-header {
    text-align: center;
    margin-bottom: 48px;
}
.feature-5c-eyebrow {
    display: inline-block;
    color: #0d9488;
    font-weight: 500;
    font-size: 12px;
    line-height: 1;
    letter-spacing: 3px;
    text-transform: uppercase;
    background: rgba(13, 148, 136, 0.08);
    padding: 6px 20px;
    border-radius: 30px;
    margin-bottom: 12px;
    border: 1px solid rgba(13, 148, 136, 0.12);
}
.feature-5c-header h2 {
    color: #0f172a;
    font-weight: 700;
    font-size: 40px;
    line-height: 1.1;
    margin: 0 0 12px 0;
    letter-spacing: 1px;
}
.feature-5c-header h2::after {
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, #0d9488, #14b8a6, #0d9488);
    margin: 16px auto 0;
    border-radius: 4px;
    content: '';
}
.feature-5c-header p {
    color: #64748b;
    font-size: 18px;
    max-width: 560px;
    margin: 16px auto 0;
    line-height: 1.7;
}

.feature-5c-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    grid-template-rows: auto auto auto;
    gap: 44px 88px;
    align-items: center;
    justify-items: stretch;
}

/* 卡片：纯文字注释，不遮挡圆环英文标签 */
.feature-5c-card {
    background: transparent;
    border: none;
    border-radius: 0;
    padding: 0;
    max-width: 272px;
    width: 100%;
    box-shadow: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    transition: none;
    position: relative;
    z-index: 1;
}
.feature-5c-card:hover {
    background: transparent;
    box-shadow: none;
    border-color: transparent;
}
.feature-5c-card p {
    position: relative;
    z-index: 1;
    color: #475569;
    font-size: 17px;
    line-height: 1.85;
    margin: 0;
}
.feature-5c-lead {
    font-weight: 600;
    color: #1e293b;
    font-size: 18px;
}

.card-capture {
    grid-column: 1;
    grid-row: 1;
    align-self: start;
    justify-self: end;
}
.card-care {
    grid-column: 3;
    grid-row: 1;
    align-self: start;
    justify-self: start;
}
.card-contextualize {
    grid-column: 1;
    grid-row: 2;
    align-self: end;
    justify-self: end;
    margin-bottom: 44px;
}
.card-calculate {
    grid-column: 3;
    grid-row: 2;
    align-self: end;
    justify-self: start;
    margin-bottom: 44px;
}
.card-corroborate {
    grid-column: 2;
    grid-row: 3;
    justify-self: center;
    align-self: start;
    max-width: 340px;
    margin-top: 6px;
    padding: 0;
    text-align: center;
}

/* 每个卡片的主题色 */
.card-capture .feature-5c-lead { color: #0d9488; }

.card-care .feature-5c-lead { color: #ec4899; }

.card-calculate .feature-5c-lead { color: #8b5cf6; }

.card-contextualize .feature-5c-lead { color: #06b6d4; }

.card-corroborate .feature-5c-lead { color: #f59e0b; }

/* 圆环 */
.feature-5c-ring-wrapper {
    grid-column: 2;
    grid-row: 1 / 3;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 10px;
    position: relative;
    z-index: 4;
}

.feature-5c-ring {
    position: relative;
    width: 400px;
    height: 400px;
    max-width: 100%;
    aspect-ratio: 1;
    animation: float-ring 4s ease-in-out infinite;
}
@keyframes float-ring {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.feature-5c-pulse {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 1.5px solid;
    opacity: 0;
    animation: pulse-ring-tech 4.5s ease-out infinite;
}
.feature-5c-pulse:nth-child(1) { border-color: rgba(13, 148, 136, 0.25); }
.feature-5c-pulse:nth-child(2) { border-color: rgba(13, 148, 136, 0.25); animation-delay: 1.5s; }
.feature-5c-pulse:nth-child(3) { border-color: rgba(13, 148, 136, 0.25); animation-delay: 3s; }
@keyframes pulse-ring-tech {
    0%   { transform: scale(0.7); opacity: 0.5; }
    100% { transform: scale(1.5); opacity: 0; }
}

.feature-5c-orbit {
    position: absolute;
    inset: 8px;
    border-radius: 50%;
    border: 2.5px dashed rgba(13, 148, 136, 0.25);
    animation: spin-orbit-clockwise 25s linear infinite;
    z-index: 1;
}
@keyframes spin-orbit-clockwise {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}

.feature-5c-orbit-reverse {
    position: absolute;
    inset: 35px;
    border-radius: 50%;
    border: 2px dashed rgba(13, 148, 136, 0.15);
    animation: spin-orbit-counter 35s linear infinite;
    z-index: 1;
}
@keyframes spin-orbit-counter {
    from { transform: rotate(360deg); }
    to   { transform: rotate(0deg); }
}

.feature-5c-crosshair {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 110px;
    height: 110px;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 4;
}
.feature-5c-crosshair::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 60px;
    height: 1.5px;
    background: linear-gradient(90deg, transparent, rgba(13, 148, 136, 0.25), transparent);
    transform: translate(-50%, -50%);
}
.feature-5c-crosshair::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 1.5px;
    height: 60px;
    background: linear-gradient(180deg, transparent, rgba(13, 148, 136, 0.25), transparent);
    transform: translate(-50%, -50%);
}
.feature-5c-crosshair .dot-center {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #0d9488;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 20px rgba(13, 148, 136, 0.2);
    animation: pulse-dot 2s ease-in-out infinite;
}
.feature-5c-crosshair .ring-1 {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    border: 1px solid rgba(13, 148, 136, 0.15);
    transform: translate(-50%, -50%);
}
.feature-5c-crosshair .ring-2 {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    border: 1px solid rgba(13, 148, 136, 0.08);
    transform: translate(-50%, -50%);
}
@keyframes pulse-dot {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.6; }
    50% { transform: translate(-50%, -50%) scale(1.5); opacity: 1; }
}

.feature-5c-core {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 150px;
    height: 150px;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(4px);
    box-shadow: 0 0 40px rgba(13, 148, 136, 0.05), inset 0 0 30px rgba(13, 148, 136, 0.02);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
}
.feature-5c-core-outer {
    position: absolute;
    inset: -10px;
    border-radius: 50%;
    border: 1.5px solid rgba(13, 148, 136, 0.15);
}
.feature-5c-core-inner {
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    border: 1px solid rgba(13, 148, 136, 0.10);
}
.feature-5c-core b {
    font-weight: 700;
    font-size: 52px;
    line-height: 1;
    color: #0f172a;
    text-shadow: 0 0 30px rgba(13, 148, 136, 0.10);
    letter-spacing: 2px;
    background: linear-gradient(135deg, #0d9488, #0f766e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.feature-5c-node {
    position: absolute;
    width: 24px;
    height: 24px;
    transform: translate(-50%, -50%);
    z-index: 8;
}
.feature-5c-node > span {
    display: block;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 3px solid rgba(255,255,255,0.95);
    box-shadow: 0 0 12px rgba(13, 148, 136, 0.15);
    animation: node-pulse 4s ease-in-out infinite;
    position: relative;
    z-index: 2;
}
.feature-5c-node .ring-label {
    position: absolute;
    top: calc(100% + 10px);
    left: 50%;
    color: rgba(30, 41, 59, 0.22);
    font-weight: 500;
    font-size: 15px;
    line-height: 1;
    white-space: nowrap;
    transform: translateX(-50%);
    pointer-events: none;
    z-index: 1;
}

.node-capture > span { background: #0d9488; }
.node-care > span { background: #ec4899; }
.node-calculate > span { background: #8b5cf6; }
.node-contextualize > span { background: #06b6d4; }
.node-corroborate > span { background: #f59e0b; }

.node-capture > span, .node-capture { animation-delay: 0s; }
.node-care > span, .node-care { animation-delay: 0.8s; }
.node-calculate > span, .node-calculate { animation-delay: 1.6s; }
.node-contextualize > span, .node-contextualize { animation-delay: 2.4s; }
.node-corroborate > span, .node-corroborate { animation-delay: 3.2s; }

.node-capture {
    top: 11.33%;
    left: 21.91%;
}
.node-care {
    top: 11.33%;
    left: 78.09%;
}
.node-calculate {
    top: 64.77%;
    left: 95.46%;
}
.node-contextualize {
    top: 64.77%;
    left: 4.54%;
}
.node-corroborate {
    top: 97.8%;
    left: 50%;
}

@keyframes node-pulse {
    0%, 100% { transform: scale(1); box-shadow: 0 0 8px rgba(13, 148, 136, 0.1); }
    50% { transform: scale(1.3); box-shadow: 0 0 28px rgba(13, 148, 136, 0.3); }
}
@keyframes label-pulse {
    0%, 100% {
        font-size: 12px;
        padding: 3px 12px;
        background: rgba(255,255,255,0.7);
        border-color: rgba(255,255,255,0.4);
        box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    }
    50% {
        font-size: 14px;
        padding: 5px 16px;
        background: rgba(255,255,255,0.95);
        border-color: rgba(13, 148, 136, 0.2);
        box-shadow: 0 4px 16px rgba(13, 148, 136, 0.08);
    }
}

/* 响应式 */
@media (max-width: 1024px) {
    .feature-5c-grid {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
    }
    .card-capture,
    .card-care,
    .card-contextualize,
    .card-calculate,
    .card-corroborate {
        justify-self: stretch;
        max-width: none;
    }
    .card-corroborate {
        grid-column: 1 / 3;
        text-align: left;
        padding: 0;
    }
    .feature-5c-ring-wrapper {
        grid-column: 1 / 3;
        grid-row: 3 / 4;
    }
    .feature-5c-ring { width: 330px; height: 330px; }
    .feature-5c-core { width: 130px; height: 130px; }
    .feature-5c-core b { font-size: 42px; }
}
@media (max-width: 700px) {
    .feature-5c-grid { display: flex; flex-direction: column; align-items: center; gap: 16px; }
    .feature-5c-ring-wrapper { order: 0; width: 100%; }
    .feature-5c-ring { width: 280px; height: 280px; }
    .feature-5c-core { width: 110px; height: 110px; }
    .feature-5c-core b { font-size: 36px; }
    .feature-5c-node .ring-label {
        font-size: 13px;
        top: calc(100% + 8px);
    }
    .feature-5c-card p {
        font-size: 16px;
    }
    .feature-5c-lead {
        font-size: 17px;
    }
    .feature-5c-card {
        max-width: 100%;
        justify-self: stretch !important;
    }
    .card-contextualize,
    .card-calculate {
        margin-bottom: 0;
    }
    .card-corroborate {
        text-align: left;
        padding: 0;
        margin-top: 0;
    }
    .node-care { left: 86%; }
    .node-calculate { left: 92%; }
    .node-corroborate { left: 8%; }
}
@media (prefers-reduced-motion: reduce) {
    .feature-5c-pulse, .feature-5c-orbit, .feature-5c-orbit-reverse,
    .feature-5c-ring, .feature-5c-node > span { animation: none; }
    .feature-5c-card { transition: none; }
}

/* ============================================
   6大分组体系 - 侧边栏切换（放大版）
   ============================================ */
.group-section {
    padding: 40px 0 30px;
    background: #f0fdfa;
    position: relative;
}

.group-sidebar-layout {
    display: flex;
    gap: 0;
    max-width: 1100px;
    margin: 0 auto;
    border-radius: 16px;
    overflow: hidden;
    position: relative;
    min-height: 380px;

    background-image: url('../home_img/c0c006d5df40363562c36441b6d5a6d3.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-color: rgba(255, 255, 255, 0.85);
    background-blend-mode: overlay;

    box-shadow: 0 4px 32px rgba(0, 0, 0, 0.04);
}

.group-sidebar {
    flex: 0 0 190px;
    background: rgba(248, 250, 252, 0.6);
    border-right: 1px solid rgba(237, 242, 247, 0.5);
    display: flex;
    flex-direction: column;
    padding: 10px 0;
}

/* 使用全局字体变量 */
.group-sidebar-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 22px;
    font-size: var(--font-size-base);
    font-weight: 500;
    color: #64748b;
    cursor: pointer;
    transition: all 0.25s ease;
    border-left: 3px solid transparent;
}

.group-sidebar-item i {
    font-size: var(--font-size-md);
    color: #94a3b8;
    width: 24px;
    text-align: center;
    transition: color 0.25s;
}

.group-sidebar-item:hover {
    background: rgba(13, 148, 136, 0.06);
    color: #0f172a;
}
.group-sidebar-item:hover i {
    color: #0d9488;
}

.group-sidebar-item.active {
    background: rgba(255, 255, 255, 0.7);
    color: #0d9488;
    border-left-color: #0d9488;
    font-weight: 600;
}
.group-sidebar-item.active i {
    color: #0d9488;
}

.group-content {
    flex: 1;
    padding: 34px 40px;
    background: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    align-items: flex-start;
}

.group-content-panel {
    display: none;
    width: 100%;
    animation: panelFadeIn 0.3s ease;
}
.group-content-panel.active {
    display: block;
}

@keyframes panelFadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* 使用全局字体变量 */
.panel-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 28px;
}

.panel-tags-2col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px 40px;
}

.panel-tag {
    font-size: var(--font-size-base);
    font-weight: 500;
    color: #475569;
    padding: 6px 0;
    position: relative;
    padding-left: 24px;
    transition: color 0.2s;
    cursor: default;
}

.panel-tag::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #d4e2e0;
    transition: background 0.3s;
}

.panel-tag:hover {
    color: #0d9488;
}
.panel-tag:hover::before {
    background: #0d9488;
}

/* 响应式 */
@media (max-width: 768px) {
    .group-sidebar-layout {
        flex-direction: column;
        min-height: auto;
        max-width: 100%;
        border-radius: 12px;
    }

    .group-sidebar {
        flex: none;
        flex-direction: row;
        flex-wrap: wrap;
        border-right: none;
        border-bottom: 1px solid rgba(237,242,247,0.5);
        padding: 8px 10px;
        gap: 4px;
        background: rgba(255,255,255,0.7);
    }

    .group-sidebar-item {
        padding: 10px 16px;
        font-size: var(--font-size-sm);
        border-left: none;
        border-bottom: 2px solid transparent;
        flex: 1 0 auto;
        justify-content: center;
        min-width: 70px;
    }
    .group-sidebar-item i {
        font-size: var(--font-size-base);
        width: 20px;
    }
    .group-sidebar-item.active {
        border-left: none;
        border-bottom-color: #0d9488;
        background: transparent;
    }

    .group-content {
        padding: 22px 24px;
        background: rgba(255,255,255,0.5);
    }

    .panel-tags {
        gap: 6px 18px;
    }
    .panel-tags-2col {
        grid-template-columns: 1fr 1fr;
        gap: 4px 24px;
    }
    .panel-tag {
        font-size: var(--font-size-sm);
        padding-left: 18px;
    }
    .panel-tag::before {
        width: 5px;
        height: 5px;
    }
}

@media (max-width: 480px) {
    .group-sidebar-item {
        padding: 8px 12px;
        font-size: var(--font-size-xs);
        gap: 4px;
        min-width: 50px;
    }
    .group-sidebar-item i {
        font-size: var(--font-size-sm);
        width: 18px;
    }

    .group-content {
        padding: 16px 18px;
    }

    .panel-tags {
        gap: 4px 12px;
    }
    .panel-tags-2col {
        grid-template-columns: 1fr;
        gap: 2px 0;
    }
    .panel-tag {
        font-size: var(--font-size-xs);
        padding: 3px 0 3px 16px;
    }
    .panel-tag::before {
        width: 4px;
        height: 4px;
    }
}

/* ============================================
   合作伙伴
   ============================================ */
.partners-section {
    padding: 60px 0 70px;
    background: #f0fdfa;
    position: relative;
    overflow: hidden;
}
.partners-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 10% 20%, rgba(13, 148, 136, 0.04) 0%, transparent 50%),
        radial-gradient(circle at 90% 80%, rgba(13, 148, 136, 0.03) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

.partners-section .container {
    position: relative;
    z-index: 1;
}

.partners-section h3 {
    font-size: 34px;
    font-weight: 700;
    color: #0f172a;
    text-align: center;
    margin-bottom: 8px;
}
.partners-section h3 i {
    color: #0d9488;
    margin-right: 10px;
}
.partners-section .partners-sub {
    text-align: center;
    color: #64748b;
    font-size: 17px;
    margin-top: 0;
    margin-bottom: 32px;
}

.partners-scroll-wrapper {
    width: 100%;
    overflow: hidden;
    position: relative;
}

.partners-track {
    display: flex;
    align-items: center;
    gap: 24px;
    width: max-content;
    animation: scrollPartners 28s linear infinite;
}

.partners-scroll-wrapper:hover .partners-track {
    animation-play-state: paused;
}

.partner-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 180px;
    min-height: 120px;
    padding: 16px 14px;
    background: rgba(255,255,255,0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,0.7);
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s;
    flex-shrink: 0;
    gap: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
}
.partner-logo:hover {
    border-color: #0d9488;
    transform: translateY(-4px);
    box-shadow: 0 8px 28px rgba(13, 148, 136, 0.08);
}
.partner-logo img {
    max-width: 100%;
    max-height: 50px;
    object-fit: contain;
    display: block;
}
.partner-logo span {
    font-size: 13px;
    font-weight: 500;
    color: #475569;
    line-height: 1.3;
}

@keyframes scrollPartners {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

@media (max-width: 768px) {
    .partners-section { padding: 40px 0 50px; }
    .partners-section h3 { font-size: 28px; }
    .partners-section .partners-sub { font-size: 15px; }
    .partner-logo { width: 140px; min-height: 100px; padding: 12px 10px; }
    .partner-logo img { max-height: 36px; }
    .partner-logo span { font-size: 11px; }
    .partners-track { gap: 16px; }
}
@media (max-width: 480px) {
    .partner-logo { width: 110px; min-height: 80px; padding: 10px 8px; }
    .partner-logo img { max-height: 28px; }
    .partner-logo span { font-size: 10px; }
    .partners-track { gap: 12px; }
}

/* ============================================
   页脚
   ============================================ */
.footer {
    border-top: 1px solid #e2e8f0;
    padding: 28px 0 20px;
    margin-top: 0;
    text-align: center;
    color: #94a3b8;
    font-size: 14px;
}

.footer a {
    color: #0d9488;
    text-decoration: none;
    transition: color 0.2s;
}

.footer a:hover {
    color: #0f766e;
}

.footer .footer-links {
    display: flex;
    justify-content: center;
    gap: 28px;
    flex-wrap: wrap;
    margin-bottom: 14px;
}

.footer .footer-links a i {
    margin-right: 6px;
}

/* ============================================
   入场动画
   ============================================ */
.fade-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   测评集介绍页面
   ============================================ */
.page-dataset-header {
    padding: 90px 0 30px;
    text-align: center;
    background: linear-gradient(135deg, #f0fdfa, #ccfbf1);
}
.page-dataset-header h1 {
    font-size: 38px;
    color: #0d9488;
}
.page-dataset-header p {
    color: #64748b;
    font-size: 17px;
    margin-top: 6px;
}

.dataset-section {
    padding: 40px 0;
}
.dataset-section h2 {
    font-size: 26px;
    color: #0d9488;
    margin-bottom: 20px;
    border-left: 4px solid #0d9488;
    padding-left: 16px;
}

.dataset-group-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}
.dataset-group-card {
    background: #f8fafc;
    border-radius: 16px;
    padding: 20px 18px;
    border-left: 4px solid #0d9488;
    transition: all 0.3s;
}
.dataset-group-card:hover {
    background: white;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.04);
    transform: translateY(-3px);
}
.dataset-group-card .g-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}
.dataset-group-card .g-header i {
    font-size: 22px;
    color: #0d9488;
}
.dataset-group-card .g-header .g-name {
    font-size: 16px;
    font-weight: 700;
    color: #0f172a;
}
.dataset-group-card .g-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}
.dataset-group-card .g-tags .tag {
    font-size: 11px;
    padding: 3px 10px;
    border-radius: 16px;
    background: white;
    color: #475569;
    border: 1px solid #e9edf2;
    transition: all 0.2s;
}
.dataset-group-card .g-tags .tag:hover {
    border-color: #0d9488;
    color: #0d9488;
}

.d-risk .g-header i { color: #dc2626; }
.d-risk { border-left-color: #dc2626; }
.d-intent .g-header i { color: #d97706; }
.d-intent { border-left-color: #d97706; }
.d-source .g-header i { color: #0891b2; }
.d-source { border-left-color: #0891b2; }
.d-rare .g-header i { color: #ec4899; }
.d-rare { border-left-color: #ec4899; }
.d-lab .g-header i { color: #7c3aed; }
.d-lab { border-left-color: #7c3aed; }
.d-dept .g-header i { color: #0d9488; }
.d-dept { border-left-color: #0d9488; }

.dataset-dimension-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
    margin-bottom: 30px;
}
.dataset-dimension-card {
    background: white;
    border-radius: 16px;
    padding: 20px 14px;
    text-align: center;
    border: 1px solid #edf2f7;
    transition: all 0.3s;
}
.dataset-dimension-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.04);
}
.dataset-dimension-card .d-icon {
    font-size: 28px;
    display: block;
    margin-bottom: 6px;
}
.dataset-dimension-card h5 {
    font-size: 14px;
    font-weight: 700;
    color: #0f172a;
}
.dataset-dimension-card p {
    font-size: 12px;
    color: #94a3b8;
    margin-top: 2px;
}

.dataset-source-box {
    background: white;
    border-radius: 16px;
    padding: 24px 28px;
    border: 1px solid #edf2f7;
}
.dataset-source-box p {
    color: #475569;
    line-height: 1.8;
    font-size: 15px;
}

.dataset-meta-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 24px;
    margin-bottom: 40px;
}
.dataset-meta-card {
    background: white;
    border-radius: 16px;
    padding: 24px 28px;
    border: 1px solid #edf2f7;
    transition: all 0.3s;
}
.dataset-meta-card:hover {
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.04);
}
.dataset-meta-card h4 {
    font-size: 17px;
    color: #0f172a;
    margin-bottom: 14px;
}
.dataset-meta-card h4 i {
    color: #0d9488;
    margin-right: 8px;
}

.meta-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.meta-list li {
    padding: 8px 0;
    border-bottom: 1px solid #f1f5f9;
    font-size: 14px;
    color: #475569;
    display: flex;
    align-items: baseline;
    gap: 12px;
}
.meta-list li:last-child {
    border-bottom: none;
}
.meta-list .field {
    font-weight: 600;
    font-size: 13px;
    color: #0d9488;
    background: #f0fdfa;
    padding: 1px 10px;
    border-radius: 12px;
    min-width: 100px;
    flex-shrink: 0;
}

.json-example {
    background: #0f172a;
    color: #e2e8f0;
    padding: 18px 20px;
    border-radius: 12px;
    font-size: 12px;
    line-height: 1.7;
    overflow-x: auto;
    margin: 0;
    white-space: pre-wrap;
    word-break: break-word;
}

/* ============================================
   我要测评页面
   ============================================ */
.page-submit-header {
    padding: 90px 0 30px;
    text-align: center;
    background: linear-gradient(135deg, #f0fdfa, #ccfbf1);
}
.page-submit-header h1 {
    font-size: 38px;
    color: #0d9488;
}
.page-submit-header p {
    color: #64748b;
    font-size: 17px;
    margin-top: 6px;
}

.submit-section {
    padding: 30px 0 60px;
}

.submit-form {
    max-width: 820px;
    margin: 0 auto;
}

.form-block {
    background: white;
    border-radius: 24px;
    padding: 32px 36px;
    margin-bottom: 28px;
    border: 1px solid #edf2f7;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
}
.form-block h2 {
    font-size: 20px;
    color: #0d9488;
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 2px solid #f1f5f9;
}
.form-block h2 i {
    margin-right: 10px;
}

.form-group {
    margin-bottom: 20px;
}
.form-group:last-child {
    margin-bottom: 0;
}
.form-group.required label::after {
    content: ' *';
    color: #dc2626;
    font-weight: 700;
}
.form-group label {
    display: block;
    font-weight: 600;
    font-size: 15px;
    color: #1e293b;
    margin-bottom: 6px;
}
.form-group input[type="text"],
.form-group input[type="url"],
.form-group input[type="password"],
.form-group input[type="email"],
.form-group input[type="number"],
.form-group input[type="date"] {
    width: 100%;
    padding: 12px 16px;
    border-radius: 30px;
    border: 1.5px solid #e2e8f0;
    font-size: 15px;
    outline: none;
    transition: border-color 0.2s;
    background: white;
}
.form-group input:focus {
    border-color: #0d9488;
}
.form-group input::placeholder {
    color: #94a3b8;
}

.input-with-unit {
    display: flex;
    align-items: center;
    gap: 0;
}
.input-with-unit input {
    flex: 1;
    border-radius: 30px 0 0 30px !important;
    border-right: none !important;
}
.input-with-unit .unit {
    padding: 12px 18px;
    background: #f8fafc;
    border: 1.5px solid #e2e8f0;
    border-radius: 0 30px 30px 0;
    font-weight: 600;
    color: #64748b;
    font-size: 15px;
    white-space: nowrap;
}
.input-with-unit input:focus + .unit {
    border-color: #0d9488;
}

.radio-group {
    display: flex;
    gap: 24px;
    margin-top: 4px;
    flex-wrap: wrap;
}
.radio-group label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 400;
    font-size: 15px;
    color: #1e293b;
    cursor: pointer;
}
.radio-group input[type="radio"] {
    width: 16px;
    height: 16px;
    accent-color: #0d9488;
    cursor: pointer;
}

.char-count {
    display: block;
    text-align: right;
    font-size: 12px;
    color: #94a3b8;
    margin-top: 4px;
}

.code-block {
    position: relative;
    background: #0f172a;
    border-radius: 16px;
    padding: 16px 20px 20px;
    overflow-x: auto;
    margin-top: 4px;
}
.code-block .copy-btn {
    position: absolute;
    top: 12px;
    right: 14px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #e2e8f0;
    padding: 4px 14px;
    border-radius: 8px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.25s;
}
.code-block .copy-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}
.code-block pre {
    margin: 0;
    padding: 0;
    overflow-x: auto;
}
.code-block code {
    font-size: 13px;
    line-height: 1.8;
    color: #e2e8f0;
    white-space: pre;
}

.submit-btn {
    width: 100%;
    padding: 16px;
    font-size: 18px;
    border-radius: 30px;
    margin-top: 8px;
    background: #0d9488;
    color: white;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s;
}
.submit-btn:hover {
    background: #0f766e;
    transform: scale(1.02);
}
.submit-btn i {
    margin-right: 10px;
}

@media (max-width: 768px) {
    .page-submit-header {
        padding: 80px 0 20px;
    }
    .page-submit-header h1 {
        font-size: 28px;
    }
    .submit-form {
        padding: 0 4px;
    }
    .form-block {
        padding: 24px 18px;
    }
    .form-block h2 {
        font-size: 18px;
    }
    .radio-group {
        gap: 16px;
    }
    .input-with-unit input {
        font-size: 14px;
        padding: 10px 14px;
    }
    .input-with-unit .unit {
        padding: 10px 14px;
        font-size: 14px;
    }
    .code-block code {
        font-size: 11px;
    }
    .submit-btn {
        font-size: 16px;
        padding: 14px;
    }
}

@media (max-width: 480px) {
    .form-block {
        padding: 18px 14px;
    }
    .form-block h2 {
        font-size: 16px;
    }
    .form-group label {
        font-size: 14px;
    }
    .form-group input {
        font-size: 14px;
        padding: 10px 14px;
    }
    .radio-group {
        gap: 12px;
        flex-direction: column;
    }
    .input-with-unit .unit {
        padding: 8px 12px;
        font-size: 13px;
    }
    .code-block code {
        font-size: 10px;
    }
    .code-block .copy-btn {
        font-size: 10px;
        padding: 3px 10px;
        top: 8px;
        right: 10px;
    }
    .submit-btn {
        font-size: 15px;
        padding: 12px;
    }
}

/* ============================================
   下拉菜单（登录后"我的"）
   ============================================ */
.dropdown {
    position: relative;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 18px 6px 14px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    background: transparent;
    border: 1.5px solid #0d9488;
    color: #0d9488;
    transition: all 0.25s;
}
.dropdown-toggle:hover {
    background: #0d9488;
    color: white;
}
.dropdown-toggle i.fa-chevron-down {
    font-size: 11px;
    transition: transform 0.25s;
}
.dropdown-toggle.open i.fa-chevron-down {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 180px;
    background: white;
    border-radius: 16px;
    padding: 8px 0;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
    border: 1px solid #edf2f7;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all 0.25s ease;
    z-index: 1001;
    list-style: none;
}
.dropdown-menu.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.dropdown-menu li {
    padding: 0;
}
.dropdown-menu li a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    color: #1e293b;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: background 0.2s;
}
.dropdown-menu li a:hover {
    background: #f0fdfa;
    color: #0d9488;
}
.dropdown-menu li a i {
    width: 18px;
    color: #94a3b8;
}
.dropdown-menu li a:hover i {
    color: #0d9488;
}
.dropdown-menu li hr {
    margin: 6px 16px;
    border: none;
    border-top: 1px solid #f1f5f9;
}
.dropdown-menu li a#logoutBtn {
    color: #dc2626;
}
.dropdown-menu li a#logoutBtn i {
    color: #dc2626;
}
.dropdown-menu li a#logoutBtn:hover {
    background: #fef2f2;
    color: #dc2626;
}

.dropdown-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    display: none;
}

.nav-auth {
    position: relative;
    display: flex;
    align-items: center;
    gap: 12px;
}

@media (max-width: 768px) {
    .dropdown-menu {
        right: -10px;
        min-width: 160px;
    }
}

/* ============================================
   平台特点 - 导航标签
   ============================================ */
.feature-tabs {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px 16px;
    margin: 8px 0 32px;
}

.feature-tab {
    padding: 8px 22px;
    border-radius: 30px;
    border: 1.5px solid #e2e8f0;
    background: transparent;
    color: #64748b;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.feature-tab:hover {
    border-color: #0d9488;
    color: #0d9488;
    background: rgba(13, 148, 136, 0.04);
}

.feature-tab.active {
    background: #0d9488;
    color: #ffffff;
    border-color: #0d9488;
}

.feature-tab.active:hover {
    background: #0f766e;
    border-color: #0f766e;
}

/* ============================================
   平台特点 - 堆叠卡片（点击居中）
   ============================================ */
.feature-overlap-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 60px 20px 40px;
    position: relative;
    min-height: 380px;
    max-width: 1100px;
    margin: 0 auto;
    overflow: visible;
}

.feature-overlap-item {
    flex: 0 0 auto;
    width: 280px;
    min-height: 260px;
    padding: 24px 20px 20px;
    background: #ffffff;
    border-radius: 16px;
    border: 1px solid #e9edf2;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
    transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    cursor: pointer;
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    transform-origin: center center;
    will-change: transform, opacity, z-index;
    left: 50%;
    margin-left: -140px;
}

.feature-overlap-item .feature-icon-overlap {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    color: #ffffff;
    flex-shrink: 0;
}

.feature-overlap-item .feature-content-overlap {
    flex: 1;
    min-width: 0;
}

.feature-overlap-item .feature-content-overlap h3 {
    font-size: var(--font-size-md);
    font-weight: 700;
    color: #0f172a;
    margin: 0 0 6px 0;
}

.feature-overlap-item .feature-content-overlap p {
    font-size: var(--font-size-sm);
    color: #475569;
    margin: 0 0 12px 0;
    line-height: 1.7;
}

.feature-overlap-item .feature-content-overlap .feature-badge {
    font-size: var(--font-size-xs);
    font-weight: 600;
    padding: 3px 14px;
    border-radius: 30px;
    letter-spacing: 0.8px;
}

/* 图标颜色 */
.icon-traceable { background: linear-gradient(135deg, #0d9488, #0f766e); }
.icon-steps { background: linear-gradient(135deg, #8b5cf6, #7c3aed); }
.icon-real { background: linear-gradient(135deg, #06b6d4, #0891b2); }
.icon-review { background: linear-gradient(135deg, #ec4899, #db2777); }
.icon-loop { background: linear-gradient(135deg, #f59e0b, #d97706); }

.badge-blue { color: #0d9488; background: rgba(13,148,136,0.08); border-color: rgba(13,148,136,0.12); }
.badge-purple { color: #8b5cf6; background: rgba(139,92,246,0.08); border-color: rgba(139,92,246,0.12); }
.badge-cyan { color: #06b6d4; background: rgba(6,182,212,0.08); border-color: rgba(6,182,212,0.12); }
.badge-pink { color: #ec4899; background: rgba(236,72,153,0.08); border-color: rgba(236,72,153,0.12); }
.badge-orange { color: #f59e0b; background: rgba(245,158,11,0.08); border-color: rgba(245,158,11,0.12); }

@media (max-width: 1024px) {
    .feature-overlap-wrapper {
        flex-wrap: wrap;
        gap: 16px;
        justify-content: center;
        min-height: auto;
        padding: 40px 16px 30px;
    }
    .feature-overlap-item {
        position: relative !important;
        left: auto !important;
        margin-left: 0 !important;
        width: calc(33.33% - 16px);
        min-height: 200px;
        transform: none !important;
        opacity: 1 !important;
        z-index: auto !important;
        border-color: #e9edf2 !important;
        box-shadow: 0 4px 20px rgba(0,0,0,0.04) !important;
    }
    .feature-overlap-item.active {
        border-color: #0d9488 !important;
        box-shadow: 0 8px 28px rgba(13,148,136,0.15) !important;
        transform: scale(1.02) !important;
    }
    .feature-overlap-item.dimmed {
        opacity: 0.6 !important;
    }
}

@media (max-width: 768px) {
    .feature-overlap-item {
        width: calc(50% - 12px);
        min-height: 180px;
        padding: 18px 16px;
    }
}

@media (max-width: 480px) {
    .feature-overlap-item {
        width: 100%;
    }
}

/* ============================================
   从受控病例，走进真实临床（Methodology）
   ============================================ */
.method-section {
    padding: 58px 0 56px;
    background: #f0fdfa;
}
.method-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}
.method-heading {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 0.72fr);
    gap: 56px;
    align-items: end;
    margin-bottom: 24px;
}
.method-eyebrow {
    grid-column: 1 / -1;
    color: #0d9488;
    font-weight: 500;
    font-size: 12px;
    line-height: 1.4;
    letter-spacing: 2px;
    text-transform: uppercase;
}
.method-eyebrow::before {
    margin-right: 8px;
    color: #eb795f;
    content: "//";
}
.method-heading h2 {
    margin: 0;
    font-weight: 700;
    font-size: clamp(46px, 5vw, 72px);
    line-height: 1.1;
    letter-spacing: 0;
    color: #0f172a;
}
.method-heading h2 em {
    color: #0d9488;
    font-style: normal;
}
.method-heading > p:last-child {
    max-width: 520px;
    margin: 0;
    color: #475569;
    font-size: clamp(15px, 1.35vw, 18px);
    line-height: 1.7;
}
.method-cards {
    position: relative;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-top: 1px solid #d4e2e0;
    border-bottom: 1px solid #d4e2e0;
}
/* 卡片3：小字和底部文字变为蓝色 */
.method-card.knowledge small,
.method-card.knowledge b {
    color: #2563eb;
}
.method-divider-glow {
    position: absolute;
    z-index: 2;
    top: 0;
    bottom: 0;
    width: 1px;
    background: linear-gradient(180deg, transparent, rgba(13, 148, 136, 0.6), rgba(13, 148, 136, 0.8), rgba(13, 148, 136, 0.6), transparent);
    /* 取消竖向分隔线的流动动画，保留静态分隔线样式 */
    display: none;
    opacity: 0;
    pointer-events: none;
}
.method-card {
    position: relative;
    min-height: 280px;
    padding: 40px 30px;
    background: transparent;
    transition: transform 0.4s, box-shadow 0.4s;
}
.method-card + .method-card {
    padding-left: 42px;
    border-left: 1px solid #d4e2e0;
}
.method-card::after {
    position: absolute;
    content: "";
    inset: 0;
    box-shadow: 0 0 0 0 rgba(13, 148, 136, 0.12);
    transition: box-shadow 0.4s;
    pointer-events: none;
}
.method-card:hover {
    transform: translateY(-4px);
}
.method-card:hover::after {
    box-shadow: 0 0 30px 12px rgba(13, 148, 136, 0.08);
}
.method-card small {
    color: #0d9488;
    font-weight: 500;
    font-size: clamp(12px, 1.2vw, 16px);
    line-height: 1;
    letter-spacing: 1px;
}
.method-card.featured small {
    color: #eb795f;
}
.method-card h3 {
    margin: 18px 0 20px;
    color: #0f172a;
    font-weight: 600;
    font-size: clamp(25px, 2.45vw, 32px);
    line-height: 1.3;
}
.method-card p {
    max-width: 540px;
    margin: 0 0 24px;
    color: #475569;
    font-size: clamp(14px, 1.3vw, 17px);
    line-height: 1.7;
}

.method-card small {
    /*  display: none; */
}
.method-card b {
    color: #0d9488;
    font-weight: 500;
    font-size: clamp(12px, 1.15vw, 16px);
    line-height: 1.5;
}
.method-ribbon {
    position: relative;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    margin-top: 30px;
    padding: 22px 0 0;
}
.method-ribbon::before {
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, #0d9488, transparent);
    content: "";
    animation: method-ribbon-glow 5s ease-in-out infinite;
}
.method-ribbon span {
    position: relative;
    padding: 0 18px;
    border-right: 1px solid #d4e2e0;
    color: #475569;
    font-size: clamp(12px, 1.1vw, 15px);
    line-height: 1.5;
}
.method-ribbon span:first-child {
    padding-left: 0;
}
.method-ribbon span:last-child {
    border-right: 0;
}
.method-ribbon span::after {
    position: absolute;
    top: 24px;
    right: -1px;
    width: 1px;
    height: calc(100% - 24px);
    background: linear-gradient(180deg, transparent, rgba(13, 148, 136, 0.6), transparent);
    content: "";
    /* 取消指标栏竖线的动态光效 */
    display: none;
}
.method-ribbon span:last-child::after {
    display: none;
}
.method-ribbon b {
    display: block;
    margin-bottom: 7px;
    color: #0f172a;
    font-weight: 700;
    font-size: clamp(30px, 3.2vw, 44px);
    line-height: 1;
}

@keyframes method-divider-flow {
    0% { transform: translateY(-100%); opacity: 0; }
    20%, 80% { opacity: 1; }
    100% { transform: translateY(100%); opacity: 0; }
}
@keyframes method-ribbon-glow {
    0%, 100% { opacity: 0; }
    50% { opacity: 0.6; }
}
@keyframes method-metric-divider {
    0% { transform: translateY(-60%); opacity: 0; }
    50% { opacity: 0.6; }
    100% { transform: translateY(60%); opacity: 0; }
}

@media (max-width: 768px) {
    .method-section { padding: 42px 0; }
    .method-heading { display: block; margin-bottom: 31px; }
    .method-heading h2 { font-size: 40px; }
    .method-heading > p:last-child { margin-top: 18px; }
    .method-cards { display: block; }
    .method-card, .method-card + .method-card { min-height: 0; padding: 24px 0; border-right: 0; border-left: 0; border-bottom: 1px solid #d4e2e0; }
    .method-card:last-child { border-bottom: 0; }
    .method-card + .method-card { padding-left: 0; }
    .method-ribbon { grid-template-columns: 1fr 1fr; gap: 18px 0; padding-top: 22px; }
    .method-ribbon span { padding: 0; border-right: 0; }
}
@media (max-width: 480px) {
    .method-ribbon { grid-template-columns: 1fr; gap: 12px; }
}

/* ============================================
   邀请共建
   ============================================ */
.invite-section {
    padding: 60px 0 70px;
    background: #f0fdfa;
}

.invite-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 60px;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

.invite-left {
    flex: 0 0 48%;
}

.invite-right {
    flex: 1;
}

.invite-title {
    font-size: 28px;
    font-weight: 500;
    color: #0f172a;
    margin: 0 0 16px 0;
    line-height: 1.4;
}

.invite-title .highlight-teal {
    color: #0d9488;
    font-weight: 700;
}

.invite-line {
    width: 60px;
    height: 3px;
    background: #0d9488;
    border-radius: 4px;
}

.invite-desc {
    font-size: 16px;
    color: #475569;
    line-height: 1.9;
    margin: 0 0 24px 0;
}

.invite-btn-wrap {
    display: flex;
    justify-content: flex-start;
}

.invite-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 10px 28px;
    background: #0d9488;
    color: #ffffff;
    border-radius: 6px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: background 0.25s, transform 0.2s;
}

.invite-btn:hover {
    background: #0f766e;
    transform: translateY(-2px);
}

.invite-btn .btn-arrow {
    font-size: 18px;
    line-height: 1;
}

@media (max-width: 768px) {
    .invite-section {
        padding: 40px 0 50px;
    }
    .invite-card {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }
    .invite-left {
        flex: none;
        width: 100%;
    }
    .invite-right {
        width: 100%;
    }
    .invite-title {
        font-size: 24px;
    }
    .invite-desc {
        font-size: 15px;
    }
    .invite-line {
        margin: 0 auto;
    }
    .invite-btn-wrap {
        justify-content: center;
    }
    .invite-btn {
        padding: 10px 24px;
        font-size: 14px;
    }
}

/* ============================================
   统计徽章（测评集介绍）
   ============================================ */
.stats-badge-row {
    display: flex;
    flex-wrap: wrap;
    gap: 16px 40px;
    justify-content: center;
    padding: 20px 24px;
    margin-bottom: 32px;
    background: #f8fafc;
    border-radius: 16px;
    border: 1px solid #e9edf2;
}

.stats-badge {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 4px 8px;
    font-size: 15px;
    color: #475569;
}

.stats-badge-num {
    font-size: 28px;
    font-weight: 700;
    color: #0d9488;
    line-height: 1;
    margin-right: 4px;
}

.stats-badge-label {
    font-weight: 500;
    color: #1e293b;
}

.stats-badge-dot {
    color: #cbd5e1;
}

.stats-badge-detail {
    color: #94a3b8;
    font-size: 14px;
}

@media (max-width: 768px) {
    .stats-badge-row {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 12px;
        padding: 16px 20px;
    }
    .stats-badge {
        justify-content: center;
    }
}
/* 珊瑚橙高亮（用于真实世界情景数据） */
.method-card .highlight-coral {
    color: #eb795f;
}

/* 方法论流程：把两类场景放进一条可复核的评测路径 */
.method-process {
    display: flex;
    align-items: center;
    gap: 13px;
    margin: 0 0 32px;
    padding: 14px 0;
    border-top: 1px solid #dbe8ee;
    border-bottom: 1px solid #dbe8ee;
}

.method-process-step {
    display: flex;
    align-items: center;
    gap: 9px;
    flex: 1;
    min-width: 0;
}

.method-process-step span {
    display: inline-grid;
    place-items: center;
    width: 28px;
    height: 28px;
    flex: 0 0 28px;
    border: 1px solid #b9d5df;
    border-radius: 50%;
    color: #116b8b;
    background: #f4fafb;
    font-size: 11px;
    font-weight: 700;
}

.method-process-step b {
    overflow: hidden;
    color: #36546a;
    font-size: 13px;
    font-weight: 600;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* 登录后在导航中显示当前账号名称 */
.nav-user-name {
    display: inline-block;
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    vertical-align: middle;
    white-space: nowrap;
}

.method-process > i {
    flex: 0 0 auto;
    color: #9bb7c2;
    font-size: 11px;
}

.method-card h3 {
    font-size: clamp(23px, 2.2vw, 29px);
}

.method-card p {
    max-width: 500px;
}

.method-card b {
    display: inline-block;
    padding-top: 3px;
    font-size: clamp(12px, 1.05vw, 14px);
}

.method-heading h2 {
    font-size: clamp(34px, 3.6vw, 52px);
    line-height: 1.16;
}

.method-heading {
    gap: 36px;
    margin-bottom: 22px;
}

.method-heading > p:last-child {
    max-width: 390px;
    font-size: 15px;
    line-height: 1.65;
}

.method-process {
    margin-bottom: 26px;
}

.method-card {
    min-height: 230px;
    height: 100%;
    padding: 32px 28px;
}

.method-cards {
    align-items: stretch;
}

.method-card > div {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.method-card p {
    max-width: 440px;
    font-size: 15px;
    line-height: 1.65;
}

.method-card b {
    margin-top: auto;
}

.method-ribbon {
    margin-top: 22px;
    padding-top: 18px;
}

.method-ribbon span {
    font-size: 12px;
}

.method-ribbon b {
    margin-bottom: 5px;
    font-size: clamp(22px, 2.2vw, 30px);
}

@media (max-width: 768px) {
    .method-heading h2 {
        font-size: 34px;
    }

    .method-heading {
        margin-bottom: 20px;
    }

    .method-heading > p:last-child {
        max-width: 100%;
        font-size: 14px;
    }

    .method-process {
        display: grid;
        grid-template-columns: repeat(4, minmax(0, 1fr));
        gap: 10px 6px;
        padding: 13px 0;
    }

    .method-process > i {
        display: none;
    }

    .method-process-step {
        display: flex;
        flex-direction: column;
        gap: 6px;
        justify-content: center;
        text-align: center;
    }

    .method-process-step span {
        width: 26px;
        height: 26px;
        flex-basis: 26px;
    }

    .method-process-step b {
        max-width: 100%;
        font-size: 11px;
    }

    .method-card {
        min-height: 0;
        height: auto;
        padding: 24px 0;
    }

    .method-card > div {
        height: auto;
    }

    .method-ribbon b {
        font-size: 24px;
    }
}

/* ============================================
   首页演示版视觉优化：明亮、克制、信息可扫描
   ============================================ */
body {
    background: #f7fafc;
    color: #17324d;
}

.bg-particles {
    opacity: .35;
}

.navbar {
    padding: 14px 0;
    background: rgba(255, 255, 255, .96);
    border-bottom: 1px solid #e7eef3;
    box-shadow: 0 4px 18px rgba(17, 49, 77, .06);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, .99);
    box-shadow: 0 5px 24px rgba(17, 49, 77, .09);
}

.logo-orbit {
    border-color: #116b8b;
    color: #116b8b;
}

.logo-text b,
.nav-links a:hover,
.nav-links a.active {
    color: #116b8b;
}

.nav-links a::after,
.btn-primary,
.hero-cta {
    background: #116b8b;
}

.btn-outline {
    border-color: #116b8b;
    color: #116b8b;
}

.hero-image-slider {
    height: clamp(520px, 47vw, 670px);
    margin-top: 72px;
    background: #eaf4f8;
}

.hero-image-track,
.hero-image-slide {
    width: 100%;
}

.hero-image-slide::after {
    background: linear-gradient(90deg, rgba(255, 255, 255, .99) 0%, rgba(255, 255, 255, .97) 31%, rgba(255, 255, 255, .84) 52%, rgba(255, 255, 255, 0) 79%);
}

.hero-image-slide img {
    filter: saturate(.92) contrast(1.02);
}

.hero-copy {
    position: absolute;
    z-index: 4;
    top: 50%;
    left: max(30px, calc((100% - 1400px) / 2 + 30px));
    width: min(560px, 46vw);
    transform: translateY(-50%);
}

.hero-kicker {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 5px 12px;
    border-left: 3px solid #db8b5c;
    color: #35657d;
    background: rgba(255, 255, 255, .7);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1.5px;
}

.hero-copy h1 {
    margin: 22px 0 16px;
    color: #123a5a;
    font-size: clamp(36px, 4.2vw, 64px);
    font-weight: 700;
    line-height: 1.18;
    letter-spacing: 0;
}

.hero-copy h1 strong {
    color: #116b8b;
    font-weight: 700;
}

.hero-copy > p {
    max-width: 430px;
    margin: 0;
    color: #4a6475;
    font-size: clamp(15px, 1.35vw, 18px);
    line-height: 1.75;
}

.hero-metrics {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 24px;
    margin: 28px 0 30px;
    color: #547083;
    font-size: 13px;
}

.hero-metrics span {
    display: inline-flex;
    align-items: baseline;
    gap: 6px;
    padding-right: 24px;
    border-right: 1px solid #c8dce5;
}

.hero-metrics span:last-child {
    padding-right: 0;
    border-right: 0;
}

.hero-metrics b {
    color: #123a5a;
    font-size: 21px;
    font-weight: 700;
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    border-radius: 4px;
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    box-shadow: 0 8px 20px rgba(17, 107, 139, .2);
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

.hero-cta:hover {
    background: #0c5671;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 12px 26px rgba(17, 107, 139, .28);
}

.hero-image-dots .dot.active {
    background: #116b8b;
}

.method-section,
.feature-5c-section,
.invite-section {
    background: #fff;
}

.method-section {
    padding-top: 76px;
    padding-bottom: 68px;
}

.method-heading h2 {
    color: #173b59;
    font-size: clamp(40px, 4.3vw, 62px);
}

.method-heading h2 em {
    color: #116b8b;
}

.method-heading > p:last-child,
.method-card p,
.feature-5c-card p {
    color: #536b7a;
}

.method-cards {
    border-color: #dbe8ee;
}

.method-card + .method-card {
    border-color: #dbe8ee;
}

.method-card h3 {
    color: #173b59;
}

.method-ribbon::before {
    background: linear-gradient(90deg, transparent, #7eb6c7, transparent);
}

.feature-5c-section {
    padding-top: 76px;
    border-top: 1px solid #edf2f5;
}

.feature-5c-eyebrow {
    color: #116b8b;
    background: #edf6f8;
    border-color: #d5e8ee;
}

.feature-5c-header h2 {
    color: #173b59;
}

.feature-5c-header p {
    color: #536b7a;
}

.partners-section {
    background: #f7fafc;
    border-top: 1px solid #e8f0f3;
}

.invite-section {
    border-top: 1px solid #e8f0f3;
}

@media (max-width: 768px) {
    /* 所有内页的导航栏均为 fixed，统一为移动端标题区预留安全顶部空间 */
    .page-header,
    .page-submit-header,
    .login-page,
    .register-page {
        /* 窄屏导航可能出现多行内容，给页头留出完整安全区 */
        padding-top: calc(164px + env(safe-area-inset-top, 0px)) !important;
    }

    .hero-image-slider {
        height: 640px;
        /* 导航栏为 fixed，预留完整高度，避免 Hero 顶部文案被遮挡 */
        margin-top: 78px;
    }

    .hero-image-slide::after {
        background: linear-gradient(180deg, rgba(255, 255, 255, .98) 0%, rgba(255, 255, 255, .91) 54%, rgba(255, 255, 255, .15) 100%);
    }

    .hero-copy {
        top: 45%;
        left: 22px;
        width: calc(100% - 44px);
        transform: translateY(-50%);
    }

    .hero-copy h1 {
        margin-top: 18px;
        font-size: clamp(34px, 9vw, 48px);
    }

    .hero-metrics {
        gap: 10px 16px;
        margin: 22px 0 26px;
    }

    .hero-metrics span {
        padding-right: 16px;
    }

    .site-logo {
        gap: 7px;
    }

    .logo-orbit,
    .brand-mark {
        width: 34px;
        height: 34px;
    }

    .logo-text {
        gap: 3px;
        font-size: 16px;
    }

    .nav-links {
        gap: 7px;
    }

    .nav-links a {
        font-size: 12px;
    }

    .nav-links a.nav-eval-link {
        min-height: 30px;
        padding: 5px 8px;
    }

    .btn-outline,
    .btn-primary {
        padding: 6px 9px;
        font-size: 12px;
    }
}

/* 首页方法论最终紧凑排版 */
.method-heading h2 {
    font-size: clamp(34px, 3.6vw, 52px);
    line-height: 1.16;
}

.method-heading {
    gap: 36px;
    margin-bottom: 22px;
}

.method-heading > p:last-child {
    max-width: 390px;
    font-size: 15px;
    line-height: 1.65;
}

.method-card small {
    /*  display: none; */
}

.method-card {
    min-height: 230px;
    padding: 32px 28px;
}

.method-card p {
    max-width: 440px;
    font-size: 15px;
    line-height: 1.65;
}

.method-ribbon {
    margin-top: 22px;
    padding-top: 18px;
}

.method-ribbon span {
    font-size: 12px;
}

.method-ribbon b {
    margin-bottom: 5px;
    font-size: clamp(22px, 2.2vw, 30px);
}

@media (max-width: 768px) {
    .method-heading h2 {
        font-size: 34px;
    }

    .method-heading {
        margin-bottom: 20px;
    }

    .method-heading > p:last-child {
        max-width: 100%;
        font-size: 14px;
    }

    .method-card {
        min-height: 0;
        padding: 24px 0;
    }

    .method-ribbon b {
        font-size: 24px;
    }
}