/* ============================================================
   PC 端色觉自测全局样式
   ============================================================ */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --primary: #2b6cb0;
    --primary-dark: #1a4971;
    --primary-light: #ebf4ff;
    --accent: #ed8936;
    --success: #38a169;
    --warning: #d69e2e;
    --danger: #e53e3e;
    --text: #2d3748;
    --text-light: #718096;
    --bg: #f7fafc;
    --white: #ffffff;
    --border: #e2e8f0;
    --radius: 10px;
    --shadow: 0 2px 12px rgba(45, 55, 72, 0.08);
    --shadow-lg: 0 8px 30px rgba(45, 55, 72, 0.14);
}

html { font-size: 16px; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC',
                 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 15px;
    line-height: 1.6;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; }

/* ---------- 隐私横幅 ---------- */
.privacy-banner {
    display: none;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 16px;
    background: #fffbeb;
    border-bottom: 1px solid #fef3c7;
    color: #92400e;
    font-size: 13px;
    text-align: center;
}
.privacy-banner.visible {
    display: flex;
}
.privacy-banner .privacy-icon {
    font-size: 14px;
}

/* ---------- 顶部导航 ---------- */
.pc-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--white);
    box-shadow: 0 1px 4px rgba(45, 55, 72, 0.06);
}
.pc-header-inner {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}
.pc-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    white-space: nowrap;
}
.pc-logo .logo-icon {
    width: 36px;
    height: 36px;
    border-radius: 9px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}
.pc-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    flex: 1;
}
.pc-nav a {
    padding: 6px 14px;
    border-radius: 6px;
    color: var(--text-light);
    font-size: 14px;
    transition: all 0.2s;
    white-space: nowrap;
}
.pc-nav a:hover { background: var(--primary-light); color: var(--primary); }
.pc-nav a.active { background: var(--primary-light); color: var(--primary); font-weight: 600; }

.pc-header-right {
    display: flex;
    align-items: center;
    gap: 14px;
}

/* 多语言切换 */
.lang-switch {
    position: relative;
}
.lang-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 7px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--white);
    color: var(--text);
    font-size: 14px;
    transition: all 0.2s;
}
.lang-btn:hover { border-color: var(--primary); color: var(--primary); }
.lang-btn .caret { font-size: 10px; color: var(--text-light); }
.lang-flag { margin-right: 4px; }
.lang-menu {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    min-width: 130px;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    display: none;
    z-index: 120;
}
.lang-switch.open .lang-menu { display: block; }
.lang-menu button,
.lang-menu a.lang-link {
    display: flex;
    align-items: center;
    width: 100%;
    padding: 10px 16px;
    border: none;
    background: transparent;
    text-align: left;
    font-size: 14px;
    color: var(--text);
    text-decoration: none;
    transition: background 0.2s;
}
.lang-menu button:hover,
.lang-menu a.lang-link:hover { background: var(--primary-light); }
.lang-menu button.active { color: var(--primary); font-weight: 600; }

/* 页脚 */
.pc-footer {
    background: #1a202c;
    color: #a0aec0;
    margin-top: 48px;
}
.pc-footer-inner {
    max-width: 1180px;
    margin: 0 auto;
    padding: 32px 24px;
    display: grid;
    grid-template-columns: 1.8fr 1fr 1fr 1fr 1.5fr;
    gap: 24px;
}
.pc-footer h4 {
    color: #fff;
    font-size: 15px;
    margin-bottom: 12px;
}
.pc-footer p { font-size: 13px; line-height: 1.8; }
.pc-footer .footer-link { display: block; font-size: 13px; padding: 4px 0; color: #a0aec0; transition: color 0.2s; }
.pc-footer .footer-link:hover { color: #fff; }
.pc-footer-bottom {
    border-top: 1px solid #2d3748;
    padding: 16px 24px;
    text-align: center;
    font-size: 12px;
    color: #718096;
}
.pc-friend-links {
    max-width: 1180px;
    margin: 0 auto;
    padding: 32px 24px;
    display: grid;
    grid-template-columns: 1.8fr 1fr 1fr 1fr 1.5fr;
    gap: 24px;
}
.pc-friend-links a{
    font-size: 13px;
    padding: 0 2px;
}

/* ---------- 主容器 ---------- */
.pc-main {
    max-width: 1180px;
    margin: 0 auto;
    padding: 32px 24px 0;
    min-height: calc(100vh - 340px);
}

/* 页头 */
.page-hero {
    background: linear-gradient(135deg, var(--primary) 0%, #4299e1 100%);
    border-radius: var(--radius);
    color: #fff;
    padding: 40px 44px;
    margin-bottom: 32px;
    box-shadow: var(--shadow-lg);
}
.page-hero h1 { font-size: 28px; font-weight: 700; margin-bottom: 10px; }
.page-hero p { font-size: 15px; opacity: 0.9; max-width: 720px; }

/* 测试卡片网格 */
.card-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.test-card {
    background: var(--white);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 24px;
    transition: all 0.25s;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.test-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}
.test-card .card-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: #fff;
    margin-bottom: 4px;
    overflow: hidden;
}
.test-card .card-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}
.test-card h3 { font-size: 17px; color: var(--text); }
.test-card p { font-size: 13px; color: var(--text-light); flex: 1; }
.test-card .card-meta { font-size: 12px; color: var(--text-light); }
.test-card .btn { align-self: flex-start; }

/* 按钮 */
.btn {
    display: inline-block;
    padding: 10px 22px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    border: none;
    transition: all 0.2s;
    text-align: center;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { filter: brightness(0.95); }
.btn-outline { background: transparent; color: var(--primary); border: 1px solid var(--primary); }
.btn-outline:hover { background: var(--primary-light); }
.btn-ghost { background: var(--white); color: var(--text-light); border: 1px solid var(--border); }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { filter: brightness(0.95); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { filter: brightness(0.95); }
.btn-lg { padding: 13px 32px; font-size: 15px; }
.btn-sm { padding: 7px 14px; font-size: 13px; }
.btn-block { display: block; width: 100%; }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }

/* Panel / Card */
.panel {
    background: var(--white);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    padding: 28px;
    margin-bottom: 20px;
}
.panel-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.panel-sub { font-size: 13px; color: var(--text-light); margin-bottom: 20px; }

/* 测试容器 */
.test-container {
    max-width: 820px;
    margin: 0 auto;
}
.test-stage {
    background: var(--white);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    padding: 28px;
    text-align: center;
}
.test-question-info { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; }
.test-progress { font-size: 13px; color: var(--text-light); }
.test-progress-bar {
    height: 6px;
    background: var(--border);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 22px;
}
.test-progress-bar .bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), #63b3ed);
    border-radius: 3px;
    transition: width 0.3s;
}

/* Canvas 容器 */
.canvas-wrap {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 16px;
    margin: 0 auto 20px;
    max-width: 560px;
}
.canvas-wrap canvas { display: block; width: 100%; height: auto; }
.canvas-hint { font-size: 12px; color: var(--text-light); margin-top: 10px; }

/* 选项 */
.option-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 14px;
    margin-top: 16px;
}
.option-btn {
    padding: 14px 20px;
    border: 2px solid var(--border);
    border-radius: 10px;
    background: var(--white);
    font-size: 15px;
    color: var(--text);
    transition: all 0.2s;
}
.option-btn:hover { border-color: var(--primary); background: var(--primary-light); }
.option-btn.selected { border-color: var(--primary); background: var(--primary-light); color: var(--primary); font-weight: 600; }
.option-btn.large { font-size: 22px; font-weight: 700; }

/* 操作行 */
.action-row {
    display: flex;
    justify-content: center;
    gap: 14px;
    margin-top: 22px;
    flex-wrap: wrap;
}

/* 结果页 */
.result-card { text-align: center; }
.result-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 28px;
    border-radius: 999px;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 18px;
}
.result-badge.normal { background: #f0fff4; color: var(--success); border: 1px solid #c6f6d5; }
.result-badge.possible { background: #fffaf0; color: var(--warning); border: 1px solid #feebc8; }
.result-score { font-size: 40px; font-weight: 800; color: var(--text); margin: 8px 0 4px; }
.result-score-label { font-size: 13px; color: var(--text-light); }
.result-text {
    max-width: 560px;
    margin: 18px auto;
    padding: 16px 20px;
    background: var(--bg);
    border-radius: 8px;
    font-size: 14px;
    color: var(--text);
}
.result-advice {
    max-width: 560px;
    margin: 0 auto 8px;
    font-size: 13px;
    color: var(--text-light);
}
.record-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 4px;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}
.record-item:last-child { border-bottom: none; }

/* 文章 */
.article-list-item {
    padding: 20px 4px;
    border-bottom: 1px solid var(--border);
    display: flex;
    gap: 20px;
    align-items: flex-start;
}
.article-list-item:last-child { border-bottom: none; }
.article-list-item h3 { font-size: 18px; color: var(--text); transition: color 0.2s; }
.article-list-item h3:hover { color: var(--primary); }
.article-list-item p { font-size: 13px; color: var(--text-light); margin: 6px 0; }
.article-date { font-size: 12px; color: var(--text-light); }
.article-body { max-width: 820px; margin: 0 auto; }
.article-body h2 { font-size: 22px; margin: 24px 0 12px; }
.article-body h3 { font-size: 18px; margin: 20px 0 10px; }
.article-body p { margin: 12px 0; font-size: 15px; line-height: 1.9; }
.article-body ul, .article-body ol { margin: 12px 0 12px 24px; list-style: disc; line-height: 1.9; }
.article-body ol { list-style: decimal; }

/* 警示 */
.alert {
    padding: 14px 18px;
    border-radius: 8px;
    font-size: 14px;
    margin-bottom: 18px;
    line-height: 1.6;
}
.alert-info { background: #ebf8ff; border: 1px solid #bee3f8; color: #2b6cb0; }
.alert-warning { background: #fffaf0; border: 1px solid #feebc8; color: #975a16; }
.alert-success { background: #f0fff4; border: 1px solid #c6f6d5; color: #276749; }
.alert-error { background: #fff5f5; border: 1px solid #fed7d7; color: #9b2c2c; }

/* SVG 图标统一样式 */
.svg-icon { display: inline-flex; align-items: center; justify-content: center; vertical-align: middle; }
.svg-icon svg { display: block; width: 100%; height: 100%; }

/* 引导步骤 */
.step-list { text-align: left; margin: 16px auto; max-width: 560px; }
.step-list li {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    padding: 10px 0;
    font-size: 14px;
}
.step-num {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: var(--primary-light);
    color: var(--primary);
    font-weight: 700;
    font-size: 13px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* 分类标签 */
.cat-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.cat-tab {
    padding: 7px 16px;
    border: 1px solid var(--border);
    background: var(--white);
    color: var(--text-light);
    border-radius: 20px;
    cursor: pointer;
    font-size: 13px;
    transition: all 0.2s;
}
.cat-tab:hover { border-color: var(--primary); color: var(--primary); }
.cat-tab.active { background: var(--primary); border-color: var(--primary); color: #fff; font-weight: 600; }

/* 记录条目头部 + 徽章 */
.record-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.record-head .result-badge { padding: 4px 12px; font-size: 12px; border-radius: 20px; }

/* 场景解读条目 */
.scene-item {
    padding: 18px 4px;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}
.scene-item:last-child { border-bottom: none; }

/* 空态提示 */
.section-empty {
    padding: 30px 0;
    text-align: center;
    color: var(--text-light);
    font-size: 14px;
}

/* ---------- 排列测试（d15 / fm100） ---------- */
.seq-area {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 16px;
    margin-bottom: 18px;
}
.seq-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 12px;
}
.seq-block {
    width: 58px;
    text-align: center;
}
.seq-block.anchor { opacity: 0.92; }
.seq-block.placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 58px;
    border: 2px dashed var(--border);
    border-radius: 8px;
}
.seq-empty { font-size: 22px; color: var(--text-light); }
.seq-color {
    width: 58px;
    height: 48px;
    border-radius: 8px;
    border: 1px solid rgba(0,0,0,0.08);
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}
.seq-label { display: block; margin-top: 4px; font-size: 11px; color: var(--text-light); }

.cand-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    margin-top: 14px;
}
.cand-item {
    width: 52px;
    height: 44px;
    border-radius: 8px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: transform 0.15s, border-color 0.15s;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}
.cand-item:hover { transform: scale(1.08); border-color: var(--primary); }

/* ---------- 形状选项（HRR） ---------- */
.shape-demo {
    display: inline-block;
    vertical-align: middle;
    margin-right: 8px;
}
.shape-demo.circle {
    width: 18px; height: 18px; border-radius: 50%;
    background: var(--primary); border: 2px solid var(--primary-dark, #2b6cb0);
}
.shape-demo.square {
    width: 18px; height: 18px;
    background: var(--primary); border: 2px solid var(--primary-dark, #2b6cb0);
}
.shape-demo.star {
  width: 18px;  /* 必须设置宽高 */
  height: 18px;
  background-color: var(--primary);
  /* 使用 polygon 定义五角星的10个顶点坐标 */
  clip-path: polygon(
    50% 0%, 
    61% 35%, 
    98% 35%, 
    68% 57%, 
    79% 91%, 
    50% 70%, 
    21% 91%, 
    32% 57%, 
    2% 35%, 
    39% 35%
  );
  /* 如果需要兼容旧版 Safari/Chrome，可添加前缀 */
  -webkit-clip-path: polygon(
    50% 0%, 
    61% 35%, 
    98% 35%, 
    68% 57%, 
    79% 91%, 
    50% 70%, 
    21% 91%, 
    32% 57%, 
    2% 35%, 
    39% 35%
  );
}

.shape-demo.none {
    width: 18px; height: 18px;
    border: 2px dashed var(--text-light);
    border-radius: 4px;
}

/* ---------- 色觉镜（anomaloscope） ---------- */
.anomalo-stage { max-width: 640px; margin: 0 auto; text-align: center; }
.anomalo-stage canvas { margin-bottom: 6px; }
.slider-row {
    display: flex;
    align-items: center;
    gap: 12px;
    max-width: 480px;
    margin: 12px auto 6px;
}
.slider-label { font-size: 13px; color: var(--text-light); flex-shrink: 0; }
.slider-row input[type="range"] { flex: 1; accent-color: var(--primary); }
.slider-val {
    width: 44px;
    font-size: 14px;
    font-weight: 700;
    color: var(--primary);
    text-align: right;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1100px) {
    .card-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 900px) {
    .pc-nav a { padding: 6px 8px; font-size: 13px; }
    .pc-footer-inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    .pc-header-inner { height: auto; padding: 12px 16px; flex-wrap: wrap; gap: 10px; }
    .pc-nav { order: 3; width: 100%; overflow-x: auto; }
    .card-grid { grid-template-columns: repeat(2, 1fr); }
    .page-hero { padding: 28px 22px; }
    .option-grid { grid-template-columns: 1fr; }
    .pc-footer-inner { grid-template-columns: 1fr; }
    .pc-main { padding: 20px 16px 0; }
}
@media (max-width: 480px) {
    .card-grid { grid-template-columns: 1fr; }
}

/* 桌面端视口内居中限制（记忆偏好：PC 端界面限制 430px 居中，此处为整页容器最大宽 1180，测试核心容器 820） */
@media (min-width: 0px) {
    /* 注：主容器已按桌面布局设置，保留此注释记录惯例 */
}
/* ============================================================
   邀请解锁面板样式（color-quant 邀请3人解锁）
   ============================================================ */
.invite-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
}
.invite-desc {
    font-size: 15px;
    color: var(--text);
    line-height: 1.7;
    margin-bottom: 16px;
}
.invite-progress {
    font-size: 22px;
    font-weight: 700;
    color: var(--accent);
    text-align: center;
    margin-bottom: 16px;
    padding: 12px 20px;
    background: #FFF8E7;
    border-radius: var(--radius);
}
.invite-link-row {
    display: flex;
    gap: 10px;
    align-items: center;
    margin-bottom: 10px;
}
.invite-input {
    flex: 1;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    color: var(--text-light);
    background: #f7fafc;
    outline: none;
}
.invite-tip {
    font-size: 13px;
    color: var(--text-light);
    text-align: center;
}
.btn-sm {
    padding: 10px 18px;
    font-size: 14px;
    border-radius: 6px;
}
.invite-unlocked {
    background: linear-gradient(135deg, #38a169, #48bb78);
    color: #fff;
    padding: 16px 24px;
    border-radius: var(--radius);
    text-align: center;
    font-weight: 700;
    font-size: 18px;
    margin-bottom: 16px;
}

/* ---------- 色觉原理科普区 ---------- */
.science-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.science-card { text-align: center; }
.science-visual { width: 100%; height: 140px; margin-bottom: 12px; }
.science-visual canvas, .science-visual svg { width: 100%; height: 100%; border-radius: 8px; }
.science-card h4 { font-size: 15px; color: var(--text); margin-bottom: 6px; }
.science-card p { font-size: 13px; color: var(--text-light); line-height: 1.6; }

/* ---------- 色觉模拟器 ---------- */
.simulator-panel { overflow: hidden; }
.simulator-tabs { display: flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; }
.sim-tab {
    padding: 8px 16px; border: 1px solid var(--border); border-radius: 20px;
    background: var(--white); font-size: 13px; color: var(--text);
    cursor: pointer; transition: all 0.2s;
}
.sim-tab:hover { border-color: var(--primary); color: var(--primary); }
.sim-tab.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.simulator-viewport { position: relative; margin-bottom: 12px; }
.sim-image-wrap {
    position: relative; width: 100%; max-width: 640px; margin: 0 auto;
    border-radius: 12px; overflow: hidden; background: #2d3748;
    aspect-ratio: 16/9;
}
.sim-image-wrap canvas { display: block; width: 100%; height: 100%; }
.sim-label {
    position: absolute; top: 12px; padding: 4px 10px; border-radius: 4px;
    font-size: 12px; font-weight: 600; color: #fff; background: rgba(0,0,0,0.5);
}
.sim-label.normal { left: 12px; }
.sim-label.simulated { right: 12px; }
.sim-divider {
    position: absolute; top: 0; left: 50%; width: 2px; height: 100%;
    background: rgba(255,255,255,0.8); cursor: ew-resize; z-index: 10;
    box-shadow: 0 0 8px rgba(0,0,0,0.3);
}
.sim-hint { text-align: center; font-size: 13px; color: var(--text-light); margin-top: 8px; }
.simulator-examples { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-top: 12px; }
.sim-thumb {
    padding: 8px 14px; border: 1px solid var(--border); border-radius: 8px;
    background: var(--white); font-size: 13px; cursor: pointer; transition: all 0.2s;
}
.sim-thumb:hover { border-color: var(--primary); }
.sim-thumb.active { background: var(--primary-light); border-color: var(--primary); color: var(--primary); font-weight: 600; }