/* ===== CSS 变量（主题色统一在此修改） ===== */
:root {
    --color-primary: #1e40af;        /* 深蓝 - 信赖专业 */
    --color-primary-dark: #1e3a8a;
    --color-primary-light: #3b82f6;
    --color-accent: #f97316;         /* 橙色 - 物流活力 */
    --color-accent-dark: #ea580c;
    --color-accent-light: #fb923c;
    --color-dark: #0f172a;
    --color-dark-2: #1e293b;
    --color-text: #334155;
    --color-text-light: #64748b;
    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    --color-border: #e2e8f0;
    --color-white: #ffffff;

    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
    --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.12);

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;

    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);

    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;

    --container-max: 1200px;
}

/* ===== 基础重置 ===== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition);
}

ul {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ===== 容器 ===== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== 按钮（主按钮用橙色，物流行业活力色） ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition);
    cursor: pointer;
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-white);
    box-shadow: 0 4px 14px rgba(249, 115, 22, 0.35);
}

.btn-primary:hover {
    background: var(--color-accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(249, 115, 22, 0.45);
}

.btn-outline {
    background: transparent;
    color: var(--color-white);
    border: 2px solid rgba(255, 255, 255, 0.6);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-white);
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

/* ===== 头部导航 ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
    transition: all var(--transition);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    border-bottom-color: var(--color-border);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-dark);
    font-weight: 700;
    font-size: 20px;
}

.logo-icon {
    display: flex;
    width: 36px;
    height: 36px;
    color: var(--color-accent);
}

.logo-icon svg {
    width: 100%;
    height: 100%;
}

.logo-17track {
    height: 26px;
    width: auto;
    margin-left: 6px;
    padding-left: 14px;
    border-left: 1px solid rgba(0, 0, 0, 0.15);
}

.nav-list {
    display: flex;
    gap: 6px;
}

.nav-link {
    position: relative;
    padding: 8px 14px;
    font-size: 14.5px;
    font-weight: 500;
    color: var(--color-text);
    border-radius: var(--radius-sm);
}

.nav-link::after {
    content: "";
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-accent-dark);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 24px;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-dark);
    transition: all var(--transition);
    border-radius: 2px;
}

.menu-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ===== Hero 首屏 ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 60%, #1e40af 100%);
    color: var(--color-white);
    overflow: hidden;
}

/* SVG 地图航线背景 */
.hero-bg-svg {
    position: absolute;
    inset: 0;
    z-index: 1;
    opacity: 0.9;
}

.hero-map {
    width: 100%;
    height: 100%;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(15, 23, 42, 0.7) 0%,
        rgba(30, 58, 138, 0.5) 100%
    );
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    padding-top: 80px;
    padding-bottom: 80px;
}

.hero-tagline {
    display: inline-block;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 4px;
    color: var(--color-accent-light);
    margin-bottom: 24px;
    padding: 6px 16px;
    border: 1px solid rgba(249, 115, 22, 0.5);
    border-radius: 50px;
    background: rgba(249, 115, 22, 0.12);
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: rgba(255, 255, 255, 0.88);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.7);
    letter-spacing: 2px;
    animation: bounce 2s infinite;
}

.hero-scroll svg {
    width: 20px;
    height: 20px;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

/* ===== 通用 Section ===== */
.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 64px;
}

.section-label {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 3px;
    color: var(--color-accent-dark);
    margin-bottom: 12px;
}

.section-title {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.section-desc {
    font-size: 16px;
    color: var(--color-text-light);
}

/* ===== 关于我们 ===== */
.about {
    background: var(--color-bg);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 64px;
    align-items: center;
    margin-bottom: 80px;
}

.about-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

/* 仓库 SVG 插画 */
.warehouse-illustration {
    width: 100%;
    height: auto;
    display: block;
    background: var(--color-dark);
}

.about-image-badge {
    position: absolute;
    bottom: -24px;
    right: -24px;
    background: var(--color-accent);
    color: var(--color-white);
    padding: 24px 28px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    text-align: center;
    z-index: 2;
}

.badge-number {
    display: block;
    font-size: 42px;
    font-weight: 800;
    line-height: 1;
}

.badge-label {
    display: block;
    font-size: 13px;
    margin-top: 4px;
    opacity: 0.95;
}

.about-content h3 {
    font-size: 26px;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 20px;
    line-height: 1.4;
}

.about-content p {
    color: var(--color-text);
    margin-bottom: 16px;
    line-height: 1.9;
}

.about-list {
    margin-top: 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.about-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
    color: var(--color-text);
}

.check-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    background: rgba(249, 115, 22, 0.12);
    color: var(--color-accent-dark);
    border-radius: 50%;
    font-size: 12px;
    font-weight: 700;
    flex-shrink: 0;
}

/* 数据统计 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    padding: 48px 32px;
    background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-lg);
    color: var(--color-white);
    position: relative;
    overflow: hidden;
}

.stats-grid::before {
    content: "";
    position: absolute;
    top: -50%;
    right: -10%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(249, 115, 22, 0.2), transparent 70%);
    border-radius: 50%;
}

.stat-item {
    text-align: center;
    position: relative;
    z-index: 1;
}

.stat-number {
    font-size: 48px;
    font-weight: 800;
    color: var(--color-white);
    line-height: 1;
}

.stat-suffix {
    font-size: 28px;
    font-weight: 800;
    color: var(--color-accent-light);
}

.stat-label {
    display: block;
    margin-top: 12px;
    font-size: 15px;
    color: rgba(255, 255, 255, 0.75);
}

/* ===== 服务项目 ===== */
.services {
    background: var(--color-bg-alt);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.service-card {
    background: var(--color-white);
    padding: 36px 28px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition);
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.service-card:hover::after {
    transform: scaleX(1);
}

.card-icon {
    display: inline-flex;
    width: 56px;
    height: 56px;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(30, 64, 175, 0.1), rgba(249, 115, 22, 0.1));
    color: var(--color-primary);
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    transition: all var(--transition);
}

.card-icon svg {
    width: 28px;
    height: 28px;
}

.service-card:hover .card-icon {
    background: var(--color-accent);
    color: var(--color-white);
    transform: scale(1.05);
}

.service-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 12px;
}

.service-card p {
    font-size: 15px;
    color: var(--color-text-light);
    line-height: 1.8;
}

/* ===== 服务网络 ===== */
.network {
    background: var(--color-bg);
}

.network-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.network-card {
    background: var(--color-bg-alt);
    padding: 32px 28px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: all var(--transition);
}

.network-card:hover {
    background: var(--color-white);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-accent-light);
}

.flag-emoji {
    font-size: 40px;
    display: block;
    margin-bottom: 16px;
    line-height: 1;
}

.network-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 6px;
}

.network-city {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-accent-dark);
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px dashed var(--color-border);
}

.network-detail {
    margin: 0;
}

.network-detail li {
    position: relative;
    padding-left: 18px;
    font-size: 14px;
    color: var(--color-text);
    margin-bottom: 8px;
}

.network-detail li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 9px;
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
}

/* ===== 核心优势 ===== */
.advantages {
    background: var(--color-bg-alt);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}

.advantage-item {
    position: relative;
    padding: 36px 24px;
    border-radius: var(--radius-md);
    background: var(--color-white);
    border: 1px solid var(--color-border);
    transition: all var(--transition);
    overflow: hidden;
}

.advantage-item::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition);
}

.advantage-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.advantage-item:hover::before {
    transform: scaleX(1);
}

.adv-number {
    display: block;
    font-size: 40px;
    font-weight: 800;
    color: var(--color-border);
    line-height: 1;
    margin-bottom: 16px;
    transition: color var(--transition);
}

.advantage-item:hover .adv-number {
    color: var(--color-accent);
}

.advantage-item h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 12px;
}

.advantage-item p {
    font-size: 14px;
    color: var(--color-text-light);
    line-height: 1.8;
}

/* ===== 行业资讯 ===== */
.news {
    background: var(--color-bg);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.news-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: all var(--transition);
}

.news-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.news-image {
    position: relative;
    height: 180px;
    display: flex;
    align-items: flex-end;
    padding: 20px;
    overflow: hidden;
}

.news-svg-icon {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 56px;
    height: 56px;
    opacity: 0.9;
}

.news-svg-icon svg {
    width: 100%;
    height: 100%;
}

.news-date {
    background: rgba(255, 255, 255, 0.95);
    color: var(--color-dark);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
    position: relative;
    z-index: 1;
}

.news-body {
    padding: 24px;
}

.news-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--color-accent-dark);
    background: rgba(249, 115, 22, 0.12);
    padding: 4px 10px;
    border-radius: 50px;
    margin-bottom: 12px;
}

.news-body h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 12px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-body p {
    font-size: 14px;
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
}

.news-link:hover {
    color: var(--color-accent-dark);
}

/* ===== 联系我们 ===== */
.contact {
    background: var(--color-bg-alt);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.contact-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.contact-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(30, 64, 175, 0.1);
    color: var(--color-primary);
    border-radius: var(--radius-md);
}

.contact-icon svg {
    width: 24px;
    height: 24px;
}

.contact-item h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 4px;
}

.contact-item p {
    font-size: 15px;
    color: var(--color-text-light);
}

/* 东南亚本地联系方式 */
.contact-whatsapp {
    margin-top: 8px;
    padding: 20px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-accent);
}

.contact-whatsapp h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 12px;
}

.whatsapp-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.whatsapp-list span {
    font-size: 14px;
    color: var(--color-text);
}

.contact-form-wrap {
    background: var(--color-white);
    padding: 40px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.contact-form h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 8px;
}

.form-tip {
    font-size: 14px;
    color: var(--color-text-light);
    margin-bottom: 24px;
}

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

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 12px 16px;
    font-size: 15px;
    font-family: inherit;
    color: var(--color-text);
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}

.contact-form select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    background: var(--color-white);
    box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.1);
}

.contact-form .form-full {
    margin-bottom: 16px;
}

.contact-form textarea {
    resize: vertical;
    margin-bottom: 20px;
}

.form-success {
    margin-top: 16px;
    padding: 12px 16px;
    background: rgba(16, 185, 129, 0.1);
    color: #059669;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    text-align: center;
    display: none;
}

.form-success.show {
    display: block;
}

/* ===== 页脚 ===== */
.footer {
    background: var(--color-dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 64px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 48px;
    padding-bottom: 48px;
}

.footer-brand .logo {
    color: var(--color-white);
    margin-bottom: 16px;
}

.footer-brand .logo-icon {
    color: var(--color-accent);
}

.footer-desc {
    font-size: 14px;
    line-height: 1.8;
    max-width: 320px;
}

.footer-col h4 {
    color: var(--color-white);
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer-col ul li {
    margin-bottom: 12px;
    font-size: 14px;
}

.footer-col ul li a:hover {
    color: var(--color-accent-light);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 24px 0;
    text-align: center;
    font-size: 13px;
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition);
}

.footer-bottom a:hover {
    color: var(--color-accent-light);
}

/* ===== 返回顶部 ===== */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    background: var(--color-accent);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition);
    z-index: 999;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--color-accent-dark);
    transform: translateY(-4px);
}

.back-to-top svg {
    width: 22px;
    height: 22px;
}

/* ===== 滚动动画 ===== */
[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

[data-animate].in-view {
    opacity: 1;
    transform: translateY(0);
}

/* ===== 运单查询 ===== */
.tracking {
    background: var(--color-bg);
}

.tracking-box {
    max-width: 820px;
    margin: 0 auto;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-lg);
    padding: 44px 40px;
    box-shadow: var(--shadow-lg);
}

.tracking-form {
    display: flex;
    gap: 14px;
    align-items: stretch;
}

.tracking-input-wrap {
    position: relative;
    flex: 1;
    display: flex;
    align-items: center;
}

.tracking-icon {
    position: absolute;
    left: 16px;
    width: 22px;
    height: 22px;
    color: var(--color-text-light);
    pointer-events: none;
}

.tracking-icon svg {
    width: 100%;
    height: 100%;
}

.tracking-form input {
    width: 100%;
    padding: 15px 16px 15px 50px;
    font-size: 15px;
    font-family: inherit;
    color: var(--color-dark);
    background: var(--color-white);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    transition: all var(--transition);
}

.tracking-form input::placeholder {
    color: var(--color-text-light);
}

.tracking-form input:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.35);
}

.tracking-btn {
    flex-shrink: 0;
    padding: 15px 34px;
}

.tracking-error {
    display: none;
    margin-top: 14px;
    font-size: 14px;
    color: #fff;
    background: rgba(239, 68, 68, 0.9);
    padding: 8px 14px;
    border-radius: var(--radius-sm);
}

.tracking-error.show {
    display: inline-block;
}

.tracking-provider {
    margin-top: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.85);
}

/* 17TRACK 文字标志（橙色 17 + 蓝色 TRACK，无外部图片） */
.wordmark-17track {
    display: inline-flex;
    align-items: baseline;
    padding: 2px 10px;
    background: var(--color-white);
    border-radius: var(--radius-sm);
    font-weight: 800;
    font-style: normal;
    letter-spacing: 0.5px;
    font-size: 17px;
    line-height: 1.4;
    color: #0033a0;
}

.wordmark-17track em {
    font-style: normal;
    color: #f60;
}

/* 查询结果区 */
.tracking-result {
    margin-top: 28px;
    text-align: left;
}

.tracking-loading,
.tracking-empty,
.tracking-fail {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.9);
    background: rgba(255, 255, 255, 0.12);
    padding: 14px 18px;
    border-radius: var(--radius-md);
}

.tracking-fail {
    background: rgba(239, 68, 68, 0.85);
    color: #fff;
}

.tracking-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: 20px 24px;
    margin-bottom: 16px;
}

.ts-status {
    display: inline-block;
    padding: 8px 18px;
    font-size: 15px;
    font-weight: 700;
    color: var(--color-white);
    background: var(--color-accent);
    border-radius: 999px;
    white-space: nowrap;
}

.ts-status--delivered {
    background: #10b981;
}

.ts-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 28px;
}

.ts-row {
    font-size: 13px;
    color: var(--color-text-light);
}

.ts-row strong {
    display: block;
    font-size: 15px;
    color: var(--color-dark);
    font-weight: 600;
}

.tracking-timeline {
    list-style: none;
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: 24px 24px 8px;
    max-height: 420px;
    overflow-y: auto;
}

.tl-item {
    position: relative;
    padding: 0 0 26px 28px;
    border-left: 2px solid var(--color-border);
}

.tl-item:last-child {
    border-left-color: transparent;
    padding-bottom: 8px;
}

.tl-dot {
    position: absolute;
    left: -7px;
    top: 4px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-border);
    border: 2px solid var(--color-white);
}

.tl-item.is-latest {
    border-left-color: var(--color-accent);
}

.tl-item.is-latest .tl-dot {
    background: var(--color-accent);
    box-shadow: 0 0 0 4px rgba(249, 115, 22, 0.2);
}

.tl-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 4px;
}

.tl-status {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-dark);
}

.tl-time {
    font-size: 13px;
    color: var(--color-text-light);
    white-space: nowrap;
}

.tl-content {
    font-size: 14px;
    color: var(--color-text);
    margin-bottom: 2px;
}

.tl-location {
    font-size: 13px;
    color: var(--color-text-light);
}

/* ===== 响应式：平板 ===== */
@media (max-width: 992px) {
    .section {
        padding: 72px 0;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
        padding: 32px 24px;
    }

    .services-grid,
    .network-grid,
    .advantages-grid,
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

/* ===== 响应式：手机 ===== */
@media (max-width: 768px) {
    html {
        scroll-padding-top: 64px;
    }

    .tracking-box {
        padding: 32px 22px;
    }

    .tracking-form {
        flex-direction: column;
    }

    .tracking-btn {
        width: 100%;
    }

    .nav-container {
        height: 64px;
    }

    .logo-17track {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .nav {
        position: fixed;
        top: 64px;
        left: 0;
        width: 100%;
        background: var(--color-white);
        padding: 16px 24px 24px;
        box-shadow: var(--shadow-md);
        transform: translateY(-150%);
        transition: transform var(--transition);
        border-top: 1px solid var(--color-border);
        max-height: calc(100vh - 64px);
        overflow-y: auto;
    }

    .nav.active {
        transform: translateY(0);
    }

    .nav-list {
        flex-direction: column;
        gap: 4px;
    }

    .nav-link {
        display: block;
        padding: 12px 16px;
        border-radius: var(--radius-sm);
    }

    .nav-link:hover,
    .nav-link.active {
        background: var(--color-bg-alt);
    }

    .nav-link::after {
        display: none;
    }

    .hero {
        min-height: 90vh;
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

    .hero-actions .btn {
        width: 100%;
    }

    .hero-scroll {
        display: none;
    }

    .section {
        padding: 56px 0;
    }

    .section-header {
        margin-bottom: 40px;
    }

    .about-list {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
        padding: 24px 16px;
    }

    .stat-number {
        font-size: 36px;
    }

    .services-grid,
    .network-grid,
    .advantages-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }

    .about-image-badge {
        right: 16px;
        bottom: -16px;
        padding: 16px 20px;
    }

    .badge-number {
        font-size: 32px;
    }

    .contact-form-wrap {
        padding: 24px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .back-to-top {
        right: 20px;
        bottom: 20px;
        width: 44px;
        height: 44px;
    }
}

/* ===== 响应式：小手机 ===== */
@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

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

    .about-image-badge {
        right: 16px;
        bottom: 16px;
    }
}