/* 全局样式 */
:root {
    --color-bg: #f5f5f7;
    --color-surface: #ffffff;
    --color-surface-muted: #f5f5f7;
    --color-text: #1d1d1f;
    --color-muted: #86868b;
    --color-border: #d2d2d7;
    --color-border-soft: #e5e5e5;
    --color-primary: #0071e3;
    --color-primary-hover: #0077ed;
    --color-primary-soft: rgba(0, 113, 227, 0.1);
    --color-danger: #e30000;
    --color-success: #2e7d32;
    --color-warning: #ff9500;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.12);
    --shadow-panel: 0 4px 24px rgba(0, 0, 0, 0.08);
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: inherit;
    letter-spacing: 0;
}

@font-face {
    font-family: "SourceHanSansCN";
    src: url("assets/fonts/SourceHanSansCN-Regular.otf") format("opentype");
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

body {
    font-family: "SourceHanSansCN", -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
    min-height: 100vh;
    padding: 20px;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
}

button,
input,
select {
    font: inherit;
}

.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
}

header {
    text-align: center;
    padding: 40px 20px 20px;
}

header h1 {
    font-size: 32px;
    font-weight: 600;
    color: var(--color-text);
}

header p {
    margin-top: 6px;
    font-size: 15px;
    color: var(--color-muted);
}

/* 通用表单 */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-label,
.form-group label {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-muted);
}

.form-group .hint,
.field-note {
    font-size: 12px;
    color: var(--color-muted);
    margin-top: 6px;
}

.required-mark {
    color: var(--color-danger);
}

.form-input,
.form-select,
input[type="number"],
input[type="text"],
select {
    width: 100%;
    min-width: 0;
    padding: 10px 14px;
    font-size: 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    color: var(--color-text);
    transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.form-input:focus,
.form-select:focus,
input[type="number"]:focus,
input[type="text"]:focus,
select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-soft);
}

input[readonly] {
    background: var(--color-surface-muted);
    color: var(--color-muted);
}

.input-error {
    border-color: var(--color-danger) !important;
}

.error-message {
    display: none;
    color: var(--color-danger);
    font-size: 13px;
    margin-top: 8px;
}

/* 通用按钮 */
.btn,
.btn-add,
.more-btn,
.feature-btn,
.vip-btn,
.share-btn,
.gift-download-btn,
.back-btn,
.back-button,
.btn-generate,
.btn-copy,
.compact-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 0;
    border-radius: var(--radius-md);
    text-decoration: none;
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s, color 0.2s, box-shadow 0.2s, transform 0.2s;
}

.btn-add,
.more-btn,
.feature-btn,
.btn-generate,
.back-button {
    padding: 12px 24px;
    color: #ffffff;
    background: var(--color-primary);
    font-size: 15px;
    font-weight: 500;
    white-space: nowrap;
    box-shadow: 0 4px 12px rgba(0, 113, 227, 0.25);
}

.btn-add:hover,
.more-btn:hover,
.feature-btn:hover,
.btn-generate:hover,
.back-button:hover {
    background: var(--color-primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-add .icon,
.more-btn span {
    font-size: 18px;
    line-height: 1;
}

.back-btn,
.compact-link {
    padding: 10px 22px;
    color: var(--color-text);
    background: var(--color-surface-muted);
    font-size: 15px;
}

.back-btn:hover,
.compact-link:hover {
    background: #e8e8ed;
}

.launch-page .back-btn,
.more-page .back-btn {
    margin-top: 30px;
}

.compact-link {
    padding: 6px 12px;
    color: var(--color-muted);
    font-size: 13px;
}

.vip-btn,
.share-btn,
.gift-download-btn {
    padding: 12px 28px;
    color: #ffffff;
    font-size: 16px;
    font-weight: 600;
}

.vip-btn {
    color: var(--color-warning);
    background: #ffffff;
}

.share-btn {
    background: var(--color-warning);
}

.gift-download-btn {
    background: #34c759;
    margin-top: 12px;
}

.vip-btn:hover,
.share-btn:hover,
.gift-download-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-copy {
    padding: 10px 18px;
    color: var(--color-primary);
    background: var(--color-surface);
    border: 1px solid var(--color-primary);
    font-size: 14px;
    font-weight: 500;
}

.btn-copy:hover {
    color: #ffffff;
    background: var(--color-primary);
}

.action-row,
.page-footer-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

.vip-page .action-row {
    margin-top: 30px;
}

/* 万能材料计算器 */
#calculator-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 20px;
}

.calc-item {
    background: var(--color-surface);
    border: 1px solid var(--color-border-soft);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.2s;
}

.calc-item:hover {
    box-shadow: var(--shadow-md);
}

.calc-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.calc-item-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-muted);
}

.btn-delete {
    padding: 4px 12px;
    color: #ff3b30;
    background: none;
    border: 0;
    border-radius: var(--radius-sm);
    font-size: 14px;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-delete:hover {
    background: rgba(255, 59, 48, 0.1);
}

.calc-item-content {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
    gap: 16px;
}

.preview-group,
.dimensions-group {
    min-width: 0;
}

.dimension-input-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
}

.dimension-input-wrapper .form-input {
    flex: 1;
}

.unit-label {
    color: var(--color-muted);
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
}

.shape-preview {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 64px;
    padding: 10px;
    overflow: hidden;
    background: var(--color-surface-muted);
    border-radius: var(--radius-md);
}

.shape-placeholder {
    color: var(--color-muted);
    font-size: 14px;
}

.shape-preview svg {
    display: block;
    width: auto;
    height: auto;
    max-width: 100%;
    max-height: 60px;
}

.dimensions-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
}

.result-section {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 16px;
    padding: 16px 20px;
    background: var(--color-surface-muted);
    border-radius: var(--radius-md);
}

.item-result-section {
    gap: 20px;
}

.item-result {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.result-label {
    color: var(--color-muted);
    font-size: 14px;
}

.result-value {
    color: var(--color-text);
    font-size: 24px;
    font-weight: 600;
}

.result-unit {
    margin-left: 4px;
    color: var(--color-muted);
    font-size: 14px;
}

.add-section {
    display: flex;
    justify-content: center;
    margin: 20px 0;
}

.total-section {
    position: sticky;
    bottom: 20px;
    z-index: 100;
    margin-top: 20px;
}

.total-card {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 20px;
    color: #ffffff;
    background: var(--color-text);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.total-row,
.total-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    gap: 40px;
}

.total-item {
    flex: 1;
}

.total-item:last-child {
    text-align: right;
}

.total-label {
    font-size: 16px;
    font-weight: 500;
}

.total-value {
    font-size: 32px;
    font-weight: 600;
}

.total-unit {
    color: var(--color-muted);
    font-size: 16px;
}

footer {
    text-align: center;
    padding: 40px 20px;
}

.shape-symbol-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 64px;
    padding: 10px;
    background: #f0f4f8;
    border-radius: var(--radius-md);
}

.shape-symbol {
    margin-bottom: 6px;
    color: var(--color-primary);
    font-size: 46px;
    line-height: 1;
}

.shape-desc {
    color: var(--color-muted);
    font-size: 12px;
    font-weight: 500;
    text-align: center;
}

/* 更多功能 / 小程序入口 */
.more-page .more-container,
.launch-page .more-container,
.vip-page .vip-container {
    width: 100%;
    max-width: 800px;
    margin: 60px auto;
    padding: 40px 20px;
    text-align: center;
}

.launch-page {
    padding-top: 10px;
}

.launch-page .more-container {
    margin-top: 20px;
    background: var(--color-surface);
    border: 1px solid var(--color-border-soft);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
}

.more-container h1,
.vip-container h1,
.qrcode-container h2 {
    margin-bottom: 12px;
    color: var(--color-text);
    font-size: 32px;
    font-weight: 600;
}

.vip-container h1 {
    color: var(--color-warning);
}

.more-container p,
.vip-container p,
.qrcode-desc {
    margin-bottom: 32px;
    color: var(--color-muted);
    font-size: 17px;
}

.qrcode-container {
    max-width: 400px;
    margin: 0 auto;
    padding: 20px;
    text-align: center;
}

.qrcode-image {
    display: block;
    width: 220px;
    height: 220px;
    margin: 0 auto;
    object-fit: contain;
    border: 1px solid var(--color-border-soft);
    border-radius: var(--radius-lg);
}

.qrcode-tip {
    margin-top: 20px;
    color: var(--color-primary);
    font-size: 14px;
    font-weight: 500;
}

.legacy-note {
    display: block;
    margin-top: 12px;
    color: var(--color-muted);
    font-size: 14px;
}

.feature-list {
    display: grid;
    gap: 16px;
    margin-top: 36px;
}

.feature-card {
    padding: 28px;
    background: var(--color-surface);
    border: 1px solid var(--color-border-soft);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.2s, transform 0.2s;
}

.feature-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.feature-card h3 {
    margin-bottom: 10px;
    color: var(--color-text);
    font-size: 20px;
    font-weight: 600;
}

.feature-card p {
    margin-bottom: 18px;
    color: var(--color-muted);
    font-size: 15px;
}

.vip-promo-card,
.gift-section {
    margin-top: 36px;
    padding: 30px;
    color: #ffffff;
    text-align: center;
    background: var(--color-text);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-panel);
}

.vip-promo-card h3 {
    margin-bottom: 10px;
    font-size: 24px;
}

.vip-promo-card p,
.gift-section p {
    color: rgba(255, 255, 255, 0.9);
}

/* VIP 页面 */
.gift-list,
.gift-box {
    margin: 20px 0;
    padding: 20px 24px;
    text-align: left;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: var(--radius-md);
}

.gift-list ul {
    list-style: none;
}

.gift-list li {
    padding: 8px 0;
    color: rgba(255, 255, 255, 0.95);
    font-size: 15px;
}

.gift-list li::before {
    content: "· ";
}

.gift-heading,
.gift-box p {
    margin: 0 0 8px;
    color: #ffffff;
    font-weight: 600;
}

.copy-tip {
    min-height: 20px;
    margin-top: 8px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
}

.gift-box {
    display: none;
    margin-top: 24px;
}

.gift-box.show {
    display: block;
    animation: fadeIn 0.4s;
}

.wechat-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    text-align: center;
    background: rgba(0, 0, 0, 0.85);
}

.wechat-overlay.show {
    display: flex;
}

.wechat-overlay h3 {
    margin-bottom: 12px;
    color: #ffffff;
    font-size: 22px;
}

.wechat-overlay p {
    max-width: 400px;
    color: #d6d6d6;
    font-size: 16px;
    line-height: 1.6;
}

.wechat-gesture {
    margin-bottom: 10px;
    font-size: 50px;
}

.wechat-note {
    margin-top: 30px;
    color: #999999 !important;
    font-size: 14px !important;
}

.arrow-up {
    width: 0;
    height: 0;
    margin: 20px auto;
    border-right: 15px solid transparent;
    border-bottom: 20px solid #ffffff;
    border-left: 15px solid transparent;
    animation: bounce 1.5s infinite;
}

.random-badge {
    display: inline-block;
    margin-left: 8px;
    padding: 4px 10px;
    color: #ffffff;
    background: #ff3b30;
    border-radius: var(--radius-lg);
    font-size: 12px;
    font-weight: 600;
}

/* 切管计算器 */
.cutting-page {
    padding: 40px 20px 120px;
    background: var(--color-bg);
}

.cutting-page .container {
    max-width: 680px;
}

.cutting-page .header {
    margin-bottom: 32px;
    text-align: center;
}

.cutting-page .header h1 {
    margin-bottom: 8px;
    color: var(--color-text);
    font-size: 36px;
    font-weight: 600;
}

.cutting-page .header p {
    color: var(--color-muted);
    font-size: 17px;
}

.cutting-page .calculator {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    padding: 36px;
    background: var(--color-surface);
    border: 1px solid var(--color-border-soft);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-panel);
}

.cutting-page .form-group {
    min-width: 0;
    margin-bottom: 0;
}

.cutting-page .form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--color-text);
    font-size: 14px;
}

.cutting-page input[type="number"],
.cutting-page select {
    padding: 12px 14px;
    height: 46px;
    line-height: 22px;
    background: #fafafa;
}

.input-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.pieces-hint {
    margin-top: 8px;
    color: var(--color-primary);
    font-size: 13px;
    font-weight: 500;
}

.with-floating-gap {
    margin-bottom: 0 !important;
}

.cutting-page .shape-demo-group {
    grid-column: 1 / -1;
}

.cutting-page .shape-demo-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
}

.cutting-page .shape-demo-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px;
    cursor: pointer;
    background: #f6f7f9;
    border: 1px solid var(--color-border-soft);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.cutting-page .shape-demo-card:hover {
    border-color: var(--color-primary);
    background: #eef5ff;
}

.cutting-page .shape-demo-card.active {
    background: #e9f2ff;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 1px rgba(0, 122, 255, 0.18);
}

.cutting-page .shape-demo-card svg {
    width: 52px;
    height: 52px;
}

.cutting-page .shape-demo-card circle,
.cutting-page .shape-demo-card rect,
.cutting-page .shape-demo-card polygon {
    fill: none;
    stroke: #374151;
    stroke-width: 4;
}

.cutting-page .shape-demo-name {
    color: var(--color-text);
    font-size: 13px;
    font-weight: 600;
}

.floating-results {
    position: fixed;
    right: 20px;
    bottom: 24px;
    left: 20px;
    z-index: 1000;
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    gap: 24px;
    width: min(600px, calc(100% - 40px));
    margin: 0 auto;
    padding: 18px 28px;
    color: #ffffff;
    background: rgba(29, 29, 31, 0.96);
    border-radius: var(--radius-xl);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.result-column {
    flex: 1;
    text-align: center;
}

.result-column .result-label {
    margin-bottom: 6px;
    color: var(--color-muted);
    font-size: 12px;
}

.result-column .result-value {
    color: #ffffff;
    font-size: 20px;
    font-weight: 700;
}

.result-divider {
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
}

/* 规格表 */
.spec-page {
    padding: 60px 0 90px;
    background: var(--color-surface);
}

.search-container {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    z-index: 1000;
    padding: 12px 20px;
    background: rgba(255, 255, 255, 0.86);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
}

.search-box,
.content {
    max-width: 1024px;
    margin: 0 auto;
}

.search-box {
    max-width: 760px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.search-wrapper {
    position: relative;
    flex: 0 1 460px;
}

.search-input {
    padding-left: 36px !important;
    background: var(--color-surface-muted) !important;
    font-size: 14px !important;
}

.search-input:focus {
    background: var(--color-surface) !important;
}

.search-icon {
    position: absolute;
    top: 50%;
    left: 12px;
    color: var(--color-muted);
    font-size: 14px;
    transform: translateY(-50%);
}

.stats {
    color: var(--color-muted);
    font-size: 12px;
    white-space: nowrap;
}

.content {
    padding: 40px 20px;
}

.header-info {
    padding: 40px 20px 56px;
    text-align: center;
}

.header-info h1 {
    margin-bottom: 12px;
    color: var(--color-text);
    font-size: 44px;
    font-weight: 600;
}

.header-info p {
    color: var(--color-muted);
    font-size: 20px;
}

.spec-source-tools {
    margin-top: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.source-note {
    color: var(--color-muted);
    font-size: 13px;
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 16px;
}

.spec-card {
    padding: 20px;
    cursor: pointer;
    background: var(--color-surface);
    border: 1px solid var(--color-border-soft);
    border-radius: var(--radius-lg);
    transition: box-shadow 0.2s, border-color 0.2s, transform 0.2s;
}

.spec-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.spec-size {
    margin-bottom: 10px;
    color: var(--color-text);
    font-size: 17px;
    font-weight: 600;
}

.spec-status {
    display: inline-block;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 500;
}

.spec-status.in-stock {
    color: var(--color-success);
    background: #e8f5e9;
}

.no-results {
    display: none;
    padding: 80px 20px;
    color: var(--color-muted);
    font-size: 17px;
    text-align: center;
}

.empty-icon {
    margin-bottom: 16px;
    font-size: 48px;
}

.empty-hint {
    margin-top: 8px;
    font-size: 14px;
}

.back-button {
    position: fixed;
    bottom: 30px;
    left: 50%;
    z-index: 1000;
    transform: translateX(-50%);
}

.back-button:hover {
    transform: translateX(-50%) translateY(-1px);
}

/* OEM 工具 */
.oem-tool-page {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    background: var(--color-bg);
}

.oem-tool-page .container {
    max-width: 680px;
    text-align: center;
}

.oem-tool-page .logo {
    margin-bottom: 12px;
    color: var(--color-text);
    font-size: 24px;
    font-weight: 600;
}

.oem-tool-page .title {
    margin-bottom: 16px;
    color: var(--color-text);
    font-size: 44px;
    font-weight: 700;
}

.oem-tool-page .subtitle {
    margin-bottom: 48px;
    color: var(--color-muted);
    font-size: 20px;
}

.input-section,
.result-card {
    margin-bottom: 30px;
    padding: 36px;
    background: var(--color-surface);
    border: 1px solid var(--color-border-soft);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-panel);
}

.input-group {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: stretch;
    gap: 20px;
}

.input-wrapper {
    position: relative;
}

.oem-tool-page .result-section {
    display: none;
    margin-top: 0;
    padding: 0;
    background: transparent;
    border-radius: 0;
    animation: fadeIn 0.4s;
}

.oem-tool-page .result-section.show {
    display: block;
}

.result-url {
    margin-bottom: 24px;
    padding: 16px;
    color: var(--color-primary);
    word-break: break-all;
    background: var(--color-surface-muted);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: "SF Mono", Monaco, "Courier New", monospace;
    font-size: 16px;
}

.qr-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

#qrcode {
    padding: 20px;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

#qrcode canvas,
#qrcode img {
    width: 400px;
    height: 400px;
}

.qr-hint {
    color: var(--color-muted);
    font-size: 14px;
}

.toast {
    position: fixed;
    bottom: 40px;
    left: 50%;
    z-index: 1000;
    padding: 14px 26px;
    color: #ffffff;
    background: rgba(29, 29, 31, 0.96);
    border-radius: var(--radius-md);
    opacity: 0;
    transform: translateX(-50%) translateY(80px);
    transition: opacity 0.2s, transform 0.2s;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* 预览页 */
.preview-page .container {
    max-width: 800px;
    padding: 30px;
    background: var(--color-surface);
    border: 1px solid var(--color-border-soft);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.preview-page h1 {
    margin-bottom: 30px;
    text-align: center;
}

.shape-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.shape-card {
    padding: 20px;
    text-align: center;
    background: #f0f4f8;
    border-radius: var(--radius-md);
    transition: transform 0.2s;
}

.shape-card:hover {
    transform: translateY(-2px);
}

.shape-name {
    margin-bottom: 5px;
    color: var(--color-text);
    font-size: 16px;
    font-weight: 600;
}

.info-box {
    margin: 20px 0;
    padding: 15px;
    background: #e8f4fd;
    border-left: 4px solid var(--color-primary);
    border-radius: var(--radius-sm);
}

.info-list {
    margin: 10px 0 0 20px;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%,
    100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* 响应式设计 */
@media (min-width: 1200px) {
    .calc-item-content {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        align-items: start;
    }

    .shape-preview {
        min-height: 72px;
    }

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

@media (min-width: 768px) and (max-width: 1199px) {
    .calc-item-content {
        grid-template-columns: 1fr 1fr;
    }

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

@media (max-width: 767px) {
    body {
        padding: 16px;
    }

    header h1,
    .more-container h1,
    .vip-container h1,
    .qrcode-container h2 {
        font-size: 24px;
    }

    .calc-item,
    .feature-card,
    .cutting-page .calculator,
    .input-section,
    .result-card {
        padding: 18px;
    }

    .calc-item-content,
    .input-row,
    .cutting-page .calculator {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .dimensions-grid {
        grid-template-columns: 1fr;
    }

    .total-row,
    .total-inner {
        gap: 16px;
    }

    .total-value {
        font-size: 24px;
    }

    .result-value,
    .result-column .result-value {
        font-size: 18px;
    }

    .more-btn,
    .btn-add,
    .feature-btn {
        padding: 11px 18px;
        font-size: 15px;
    }

    .cutting-page {
        padding: 28px 16px 120px;
    }

    .cutting-page .header h1,
    .header-info h1,
    .oem-tool-page .title {
        font-size: 28px;
    }

    .cutting-page .shape-demo-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .floating-results {
        padding: 16px;
        gap: 14px;
    }

    .result-divider {
        height: 30px;
    }

    .specs-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: 12px;
    }

    .spec-card {
        padding: 16px;
    }

    #qrcode canvas,
    #qrcode img {
        width: 280px;
        height: 280px;
    }
}