/* Google Fonts 改为 HTML link 异步加载，避免阻塞渲染 */

/* ===========================
   黑金奢华 + 高级电竞风 设计系统
   =========================== */

:root {
    --gold-primary: #ffd700;
    --gold-secondary: #d4af37;
    --gold-light: #f0c75e;
    --gold-gradient: linear-gradient(135deg, #f0c75e 0%, #ffd700 40%, #d4af37 70%, #b8860b 100%);
    --gold-neon: rgba(255, 215, 0, 0.6);

    --esports-orange: #ff6b00;
    --esports-orange-glow: rgba(255, 107, 0, 0.5);

    --bg-deep: #0a0a0f;
    --bg-deep-2: #0f0f17;
    --bg-gradient: radial-gradient(ellipse at top, #15151f 0%, #0a0a0f 60%, #050507 100%);

    --card-bg: rgba(20, 20, 30, 0.65);
    --card-bg-solid: #14141e;
    --card-border: rgba(255, 215, 0, 0.25);
    --card-border-hover: rgba(255, 215, 0, 0.8);

    --text-primary: #f5f5f7;
    --text-secondary: #a8a8b3;
    --text-gold: #ffd700;

    --neon-green: #2ed573;
    --neon-green-glow: rgba(46, 213, 115, 0.5);

    --font-en: 'Orbitron', 'Segoe UI', sans-serif;
    --font-cn: 'Noto Sans SC', 'Microsoft YaHei', 'PingFang SC', sans-serif;

    --clip-corner: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
    --clip-corner-sm: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-cn);
    background: var(--bg-gradient);
    color: var(--text-primary);
    min-height: 100vh;
    padding-bottom: 40px;
    overflow-x: hidden;
    position: relative;
}

/* 背景几何纹理 + 扫光层 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(255, 215, 0, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 215, 0, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: 0;
}

body::after {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 20% 30%, rgba(255, 215, 0, 0.08) 0%, transparent 40%),
                radial-gradient(circle at 80% 70%, rgba(255, 107, 0, 0.06) 0%, transparent 40%);
    pointer-events: none;
    z-index: 0;
    animation: bgFloat 40s ease-in-out infinite;
    will-change: transform;
}

@keyframes bgFloat {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-30px, 20px); }
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
    position: relative;
    z-index: 1;
    animation: fadeUp 0.8s ease both;
}

/* ===========================
   Banner 区域
   =========================== */
.banner-section {
    background:
        linear-gradient(135deg, rgba(255, 215, 0, 0.12) 0%, rgba(10, 10, 15, 0.9) 50%, rgba(255, 107, 0, 0.1) 100%),
        radial-gradient(ellipse at center, #1a1a25 0%, #0a0a0f 100%);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 20px;
    position: relative;
    box-shadow:
        0 0 0 1px rgba(255, 215, 0, 0.4),
        0 0 40px rgba(255, 215, 0, 0.15),
        0 8px 32px rgba(0, 0, 0, 0.8);
    clip-path: var(--clip-corner);
    animation: fadeUp 0.8s ease 0.1s both;
}

.banner-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(45deg, rgba(255, 215, 0, 0.04) 25%, transparent 25%, transparent 50%, rgba(255, 215, 0, 0.04) 50%, rgba(255, 215, 0, 0.04) 75%, transparent 75%, transparent),
        linear-gradient(-45deg, rgba(255, 107, 0, 0.03) 25%, transparent 25%, transparent 50%, rgba(255, 107, 0, 0.03) 50%, rgba(255, 107, 0, 0.03) 75%, transparent 75%, transparent);
    background-size: 40px 40px, 60px 60px;
    pointer-events: none;
    animation: bannerScan 16s linear infinite;
}

@keyframes bannerScan {
    0% { background-position: 0 0, 0 0; }
    100% { background-position: 80px 80px, -120px -120px; }
}

.banner-content {
    padding: 40px 20px;
    text-align: center;
    position: relative;
    z-index: 1;
}

.banner-logo {
    width: 90px;
    height: 90px;
    margin-bottom: 18px;
    border-radius: 50%;
    border: 2px solid var(--gold-primary);
    box-shadow:
        0 0 12px var(--gold-neon),
        0 0 24px rgba(255, 215, 0, 0.2);
    animation: logoPulse 6s ease-in-out infinite;
    will-change: transform;
}

@keyframes logoPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.03); }
}

.banner-title {
    font-family: var(--font-cn);
    font-weight: 700;
    font-size: 52px;
    background: linear-gradient(180deg, #fff8dc 0%, #ffd700 40%, #d4af37 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow:
        0 0 30px rgba(255, 215, 0, 0.6),
        0 0 60px rgba(255, 215, 0, 0.3);
    margin-bottom: 18px;
    letter-spacing: 8px;
    filter: drop-shadow(0 0 10px rgba(255, 215, 0, 0.5));
}

.banner-subtitle {
    background: rgba(10, 10, 15, 0.7);
    border-radius: 2px;
    padding: 10px 28px;
    display: inline-block;
    color: var(--gold-light);
    font-size: 15px;
    margin-bottom: 12px;
    border: 1px solid var(--gold-secondary);
    box-shadow: 0 0 15px rgba(255, 215, 0, 0.2), inset 0 0 10px rgba(255, 215, 0, 0.05);
    letter-spacing: 1px;
    clip-path: var(--clip-corner-sm);
}

.banner-tagline {
    color: rgba(255, 215, 0, 0.85);
    font-size: 14px;
    letter-spacing: 3px;
    font-weight: 400;
    font-family: var(--font-en);
}

/* ===========================
   Section Title
   =========================== */
.section-title {
    font-family: var(--font-cn);
    font-weight: 700;
    font-size: 28px;
    background: linear-gradient(90deg, #d4af37 0%, #ffd700 50%, #d4af37 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-align: center;
    margin: 30px 0 22px;
    letter-spacing: 5px;
    position: relative;
    filter: drop-shadow(0 0 8px rgba(255, 215, 0, 0.4));
}

.section-title::before,
.section-title::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 40px;
    height: 2px;
    background: var(--gold-gradient);
    box-shadow: 0 0 8px var(--gold-neon);
}

.section-title::before {
    left: 10%;
}

.section-title::after {
    right: 10%;
}

/* ===========================
   QR 二维码区域 (绿色霓虹)
   =========================== */
.qr-section {
    background:
        linear-gradient(135deg, rgba(46, 213, 115, 0.08) 0%, rgba(10, 10, 15, 0.8) 100%),
        radial-gradient(circle at center, rgba(46, 213, 115, 0.1) 0%, transparent 70%);
    border: 1px solid rgba(46, 213, 115, 0.4);
    border-radius: 4px;
    padding: 30px;
    margin-bottom: 20px;
    text-align: center;
    position: relative;
    box-shadow:
        0 0 30px rgba(46, 213, 115, 0.15),
        inset 0 0 30px rgba(46, 213, 115, 0.04);
    clip-path: var(--clip-corner);
    animation: fadeUp 0.8s ease 0.2s both;
}

.qr-container {
    display: inline-block;
    background: rgba(10, 10, 15, 0.6);
    border-radius: 4px;
    padding: 20px;
    max-width: 100%;
    border: 1px solid rgba(46, 213, 115, 0.3);
    box-shadow: 0 0 12px rgba(46, 213, 115, 0.15);
    backdrop-filter: blur(2px);
}

.qr-code {
    width: 100%;
    max-width: 200px;
    height: auto;
    aspect-ratio: 1 / 1;
    border-radius: 4px;
    border: 2px solid rgba(46, 213, 115, 0.6);
    box-shadow:
        0 0 25px rgba(46, 213, 115, 0.4),
        0 0 50px rgba(46, 213, 115, 0.2),
        inset 0 0 15px rgba(46, 213, 115, 0.1);
    transition: all 0.3s ease;
}

.qr-code:hover {
    box-shadow:
        0 0 35px rgba(46, 213, 115, 0.6),
        0 0 70px rgba(46, 213, 115, 0.3);
}

.qr-placeholder {
    width: 100%;
    max-width: 200px;
    height: auto;
    aspect-ratio: 1 / 1;
    border-radius: 4px;
    border: 2px dashed rgba(46, 213, 115, 0.5);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: rgba(46, 213, 115, 0.05);
    margin: 0 auto;
    box-shadow: inset 0 0 12px rgba(46, 213, 115, 0.08);
}

.qr-text {
    margin-top: 18px;
    font-size: 16px;
    color: var(--neon-green);
    font-weight: 600;
    line-height: 1.5;
    letter-spacing: 1px;
    text-shadow: 0 0 10px var(--neon-green-glow), 0 0 20px rgba(46, 213, 115, 0.3);
    font-family: var(--font-cn);
}

/* ===========================
   套餐卡片区域 (切角设计)
   =========================== */
.price-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-bottom: 20px;
}

.price-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
    cursor: pointer;
}

.price-card-link:active {
    opacity: 0.85;
}

.price-card {
    background: var(--card-bg);
    border-radius: 0;
    padding: 24px 14px;
    text-align: center;
    border: 1px solid var(--card-border);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(2px);
    clip-path: var(--clip-corner);
    box-shadow:
        0 4px 16px rgba(0, 0, 0, 0.5),
        inset 0 1px 0 rgba(255, 215, 0, 0.1);
    contain: layout style;
}

/* 卡片顶部金线 */
.price-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gold-gradient);
    box-shadow: 0 0 10px var(--gold-neon);
}

/* 金光扫过效果 */
.price-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 60%;
    height: 100%;
    background: linear-gradient(110deg, transparent 0%, rgba(255, 215, 0, 0.15) 45%, rgba(255, 215, 0, 0.35) 50%, rgba(255, 215, 0, 0.15) 55%, transparent 100%);
    transform: skewX(-20deg);
    transition: left 0.8s ease;
    pointer-events: none;
}

.price-card:hover {
    transform: translateY(-6px) scale(1.02);
    border-color: var(--card-border-hover);
    box-shadow:
        0 8px 24px rgba(0, 0, 0, 0.6),
        0 0 16px rgba(255, 215, 0, 0.25),
        inset 0 1px 0 rgba(255, 215, 0, 0.2);
    will-change: transform;
}

.price-card:hover::after {
    left: 120%;
}

.price-logo {
    width: 72px;
    height: 72px;
    margin-bottom: 14px;
    border-radius: 50%;
    border: 2px solid var(--gold-primary);
    box-shadow:
        0 0 18px rgba(255, 215, 0, 0.4),
        0 0 35px rgba(255, 215, 0, 0.2),
        inset 0 0 10px rgba(255, 215, 0, 0.15);
    transition: all 0.4s ease;
}

.price-card:hover .price-logo {
    box-shadow:
        0 0 25px rgba(255, 215, 0, 0.7),
        0 0 50px rgba(255, 215, 0, 0.4),
        inset 0 0 15px rgba(255, 215, 0, 0.25);
    transform: rotate(5deg);
}

.price-name {
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: 10px;
    letter-spacing: 2px;
}

.price-val {
    font-size: 20px;
    background: linear-gradient(180deg, #ffd700 0%, #d4af37 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 900;
    font-family: var(--font-en);
    letter-spacing: 1px;
    filter: drop-shadow(0 0 6px rgba(255, 215, 0, 0.4));
}

.price-hint {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 10px;
    font-style: italic;
    letter-spacing: 0.5px;
}

.price-img {
    max-width: 100%;
    height: auto;
    margin-top: 8px;
    border-radius: 4px;
    border: 1px solid rgba(255, 215, 0, 0.2);
}

/* ===========================
   规则区域
   =========================== */
.rules-section {
    background: var(--card-bg);
    border-radius: 4px;
    padding: 28px;
    margin-bottom: 20px;
    border: 1px solid var(--card-border);
    backdrop-filter: blur(5px);
    clip-path: var(--clip-corner);
    box-shadow:
        0 4px 20px rgba(0, 0, 0, 0.6),
        inset 0 1px 0 rgba(255, 215, 0, 0.08);
    animation: fadeUp 0.8s ease 0.3s both;
}

.rules-section h3 {
    font-family: var(--font-cn);
    font-weight: 700;
    font-size: 24px;
    background: linear-gradient(90deg, #d4af37 0%, #ffd700 50%, #d4af37 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 22px;
    text-align: center;
    letter-spacing: 3px;
    filter: drop-shadow(0 0 6px rgba(255, 215, 0, 0.4));
}

.rules-image {
    margin-bottom: 22px;
    border-radius: 4px;
    overflow: hidden;
    border: 1px solid rgba(255, 215, 0, 0.3);
    box-shadow: 0 0 10px rgba(255, 215, 0, 0.08);
    transition: all 0.4s ease;
}

.rules-image:hover {
    border-color: rgba(255, 215, 0, 0.6);
    box-shadow: 0 0 16px rgba(255, 215, 0, 0.2);
}

.rules-image img {
    width: 100%;
    height: auto;
    display: block;
    cursor: zoom-in;
    transition: transform 0.4s ease;
}

.rules-image:hover img {
    transform: scale(1.02);
}

.rules-list {
    list-style: none;
}

.rules-list li {
    color: var(--text-secondary);
    margin: 14px 0;
    font-size: 14px;
    line-height: 1.9;
    padding-left: 22px;
    position: relative;
    transition: color 0.3s ease;
}

.rules-list li:hover {
    color: var(--text-primary);
}

.rules-list li::before {
    content: '◆';
    position: absolute;
    left: 0;
    color: var(--gold-primary);
    text-shadow: 0 0 8px var(--gold-neon);
    font-size: 12px;
    top: 2px;
}

/* ===========================
   下单表单区域
   =========================== */
.order-section {
    background: var(--card-bg);
    border-radius: 4px;
    padding: 28px;
    border: 1px solid var(--card-border);
    backdrop-filter: blur(5px);
    clip-path: var(--clip-corner);
    box-shadow:
        0 4px 20px rgba(0, 0, 0, 0.6),
        inset 0 1px 0 rgba(255, 215, 0, 0.08);
    animation: fadeUp 0.8s ease 0.4s both;
}

.order-section h3 {
    font-family: var(--font-cn);
    font-weight: 700;
    font-size: 24px;
    background: linear-gradient(90deg, #d4af37 0%, #ffd700 50%, #d4af37 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 22px;
    text-align: center;
    letter-spacing: 3px;
    filter: drop-shadow(0 0 6px rgba(255, 215, 0, 0.4));
}

.form-item {
    margin-bottom: 18px;
}

.form-item label {
    display: block;
    margin-bottom: 8px;
    color: var(--gold-light);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 1px;
}

.form-item input,
.form-item textarea,
.form-item select {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid rgba(255, 215, 0, 0.2);
    border-radius: 4px;
    font-size: 14px;
    font-family: inherit;
    color: var(--text-primary);
    transition: all 0.3s ease;
    background: rgba(10, 10, 15, 0.7);
    backdrop-filter: blur(2px);
}

.form-item input::placeholder,
.form-item textarea::placeholder {
    color: rgba(168, 168, 179, 0.5);
}

.form-item input:focus,
.form-item textarea:focus,
.form-item select:focus {
    outline: none;
    border-color: var(--gold-primary);
    box-shadow:
        0 0 12px rgba(255, 215, 0, 0.4),
        0 0 24px rgba(255, 215, 0, 0.2),
        inset 0 0 8px rgba(255, 215, 0, 0.05);
    background: rgba(20, 20, 30, 0.9);
}

.form-item textarea {
    min-height: 100px;
    resize: vertical;
}

/* ===========================
   提交按钮 (扫光动画)
   =========================== */
.submit-btn {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #d4af37 0%, #ffd700 50%, #d4af37 100%);
    border: none;
    border-radius: 4px;
    color: #0a0a0f;
    font-size: 16px;
    font-weight: 700;
    font-family: var(--font-cn);
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 12px;
    letter-spacing: 3px;
    position: relative;
    overflow: hidden;
    box-shadow:
        0 4px 20px rgba(255, 215, 0, 0.5),
        0 0 40px rgba(255, 215, 0, 0.2);
    clip-path: var(--clip-corner-sm);
}

/* 按钮扫光 */
.submit-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.6), transparent);
    transform: skewX(-20deg);
    transition: left 0.6s ease;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow:
        0 6px 30px rgba(255, 215, 0, 0.7),
        0 0 60px rgba(255, 215, 0, 0.4);
}

.submit-btn:hover::before {
    left: 150%;
}

.submit-btn:active {
    transform: translateY(0);
    box-shadow:
        0 2px 10px rgba(255, 215, 0, 0.4);
}

/* ===========================
   Footer
   =========================== */
footer {
    text-align: center;
    padding: 30px 0;
    color: var(--gold-secondary);
    font-size: 13px;
    letter-spacing: 1px;
    border-top: 1px solid rgba(255, 215, 0, 0.15);
    margin-top: 20px;
    text-shadow: 0 0 8px rgba(255, 215, 0, 0.2);
}

footer p {
    margin-bottom: 5px;
}

footer a {
    color: inherit;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

/* ===========================
   图片预览遮罩
   =========================== */
.img-preview-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(5, 5, 8, 0.95);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: zoom-out;
    backdrop-filter: blur(2px);
}

.img-preview-overlay img {
    max-width: 90%;
    max-height: 90%;
    border-radius: 4px;
    border: 1px solid rgba(255, 215, 0, 0.4);
    box-shadow:
        0 0 40px rgba(255, 215, 0, 0.3),
        0 0 80px rgba(255, 215, 0, 0.15);
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

.qr-code {
    cursor: zoom-in;
}

/* ===========================
   弹窗公告 (深色 + 金边)
   =========================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(5, 5, 8, 0.85);
    z-index: 9998;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
    backdrop-filter: blur(3px);
}

.modal-content {
    background: linear-gradient(135deg, #14141e 0%, #0a0a0f 100%);
    border-radius: 4px;
    width: 90%;
    max-width: 400px;
    overflow: hidden;
    border: 1px solid rgba(255, 215, 0, 0.6);
    box-shadow:
        0 0 40px rgba(255, 215, 0, 0.4),
        0 0 80px rgba(255, 215, 0, 0.2),
        0 20px 60px rgba(0, 0, 0, 0.8);
    animation: slideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    clip-path: var(--clip-corner);
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px) scale(0.96); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-header {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.2) 0%, rgba(255, 215, 0, 0.1) 100%);
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255, 215, 0, 0.3);
    position: relative;
}

.modal-header h3 {
    color: var(--gold-primary);
    font-size: 18px;
    font-weight: 700;
    margin: 0;
    letter-spacing: 2px;
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
    font-family: var(--font-cn);
}

.modal-close {
    background: rgba(255, 215, 0, 0.1);
    border: 1px solid rgba(255, 215, 0, 0.4);
    color: var(--gold-primary);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    line-height: 1;
}

.modal-close:hover {
    background: rgba(255, 215, 0, 0.25);
    border-color: var(--gold-primary);
    box-shadow: 0 0 15px rgba(255, 215, 0, 0.5);
    transform: rotate(90deg);
}

.modal-body {
    padding: 24px;
}

.modal-body p {
    color: var(--text-primary);
    font-size: 15px;
    line-height: 1.9;
    margin: 0;
    white-space: pre-wrap;
}

.modal-footer {
    padding: 0 24px 24px;
}

.modal-footer .btn-primary {
    width: 100%;
    background: linear-gradient(135deg, #d4af37 0%, #ffd700 50%, #d4af37 100%);
    color: #0a0a0f;
    border: none;
    padding: 14px;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    letter-spacing: 3px;
    font-family: var(--font-cn);
    box-shadow: 0 4px 15px rgba(255, 215, 0, 0.4);
    clip-path: var(--clip-corner-sm);
}

.modal-footer .btn-primary:active {
    transform: scale(0.98);
    opacity: 0.9;
    box-shadow: 0 2px 10px rgba(255, 215, 0, 0.5);
}

/* ===========================
   入场渐显动画
   =========================== */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===========================
   响应式设计
   =========================== */
@media screen and (max-width: 1024px) {
    .container {
        max-width: 95%;
    }
}

@media screen and (max-width: 768px) {
    .container {
        max-width: 100%;
        padding: 0 15px;
    }

    .price-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
    }

    .banner-title {
        font-size: 42px;
        letter-spacing: 5px;
    }

    .banner-content {
        padding: 30px 15px;
    }

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

    .price-card {
        padding: 18px 10px;
    }

    .price-logo {
        width: 60px;
        height: 60px;
    }
}

@media screen and (max-width: 600px) {
    .price-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .banner-title {
        font-size: 38px;
        letter-spacing: 4px;
    }

    .banner-content {
        padding: 28px 15px;
    }

    .section-title {
        font-size: 22px;
    }

    .price-card {
        padding: 16px 8px;
    }

    .price-logo {
        width: 55px;
        height: 55px;
    }
}

@media screen and (max-width: 414px) {
    .banner-title {
        font-size: 34px;
        letter-spacing: 3px;
    }

    .banner-logo {
        width: 75px;
        height: 75px;
    }

    .price-name {
        font-size: 13px;
    }

    .price-val {
        font-size: 17px;
    }

    .banner-subtitle {
        font-size: 13px;
        padding: 8px 20px;
    }
}

@media screen and (max-width: 375px) {
    .price-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .banner-title {
        font-size: 30px;
        letter-spacing: 2px;
    }

    .banner-content {
        padding: 22px 12px;
    }

    .banner-logo {
        width: 65px;
        height: 65px;
        margin-bottom: 12px;
    }

    .banner-subtitle {
        font-size: 12px;
        padding: 6px 18px;
    }

    .banner-tagline {
        font-size: 12px;
    }

    .section-title {
        font-size: 20px;
        margin: 22px 0 16px;
    }

    .price-card {
        padding: 14px 6px;
    }

    .price-logo {
        width: 52px;
        height: 52px;
        margin-bottom: 8px;
    }

    .price-name {
        font-size: 12px;
    }

    .price-val {
        font-size: 15px;
    }

    .rules-section,
    .order-section {
        padding: 20px;
    }

    .rules-section h3,
    .order-section h3 {
        font-size: 20px;
        margin-bottom: 16px;
    }

    .rules-list li {
        font-size: 13px;
        margin: 10px 0;
        padding-left: 18px;
    }

    .form-item {
        margin-bottom: 15px;
    }

    .form-item label {
        font-size: 13px;
        margin-bottom: 6px;
    }

    .form-item input,
    .form-item textarea,
    .form-item select {
        padding: 10px 12px;
        font-size: 13px;
    }

    .form-item textarea {
        min-height: 80px;
    }

    .submit-btn {
        padding: 12px;
        font-size: 15px;
    }

    footer {
        padding: 25px 0;
        font-size: 12px;
    }
}

@media screen and (max-width: 320px) {
    .price-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }

    .container {
        padding: 0 10px;
    }

    .banner-title {
        font-size: 28px;
        letter-spacing: 2px;
    }

    .banner-logo {
        width: 55px;
        height: 55px;
        margin-bottom: 10px;
    }

    .banner-subtitle {
        font-size: 12px;
        padding: 6px 15px;
    }

    .price-logo {
        width: 46px;
        height: 46px;
    }

    .price-card {
        padding: 12px 6px;
    }

    .price-name {
        font-size: 11px;
    }

    .price-val {
        font-size: 14px;
    }

    .rules-section,
    .order-section {
        padding: 16px;
    }

    .rules-list li {
        font-size: 12px;
        line-height: 1.7;
    }

    .section-title::before,
    .section-title::after {
        width: 30px;
    }
}

/* ===========================
   方向适配（横屏 / 竖屏）
   =========================== */

/* 平板横屏（iPad / Android tablet landscape, 1024-1366px） */
@media screen and (min-width: 1025px) and (max-width: 1366px) and (orientation: landscape) {
    .container {
        max-width: 1100px;
    }

    .price-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 16px;
    }

    .banner-content {
        padding: 32px 20px;
    }

    .banner-title {
        font-size: 46px;
        letter-spacing: 6px;
    }
}

/* 平板竖屏（iPad / Android tablet portrait, ≤1024px） */
@media screen and (max-width: 1024px) and (orientation: portrait) {
    .price-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 14px;
    }

    .banner-title {
        font-size: 40px;
        letter-spacing: 4px;
    }
}

/* 手机横屏（phone landscape, ≤900px）—— 高度受限，整体压缩 */
@media screen and (max-width: 900px) and (orientation: landscape) and (max-height: 500px) {
    body {
        padding-bottom: 20px;
    }

    .container {
        padding: 0 12px;
    }

    .banner-section {
        margin-bottom: 12px;
    }

    .banner-content {
        padding: 18px 15px;
    }

    .banner-logo {
        width: 55px;
        height: 55px;
        margin-bottom: 10px;
    }

    .banner-title {
        font-size: 28px;
        letter-spacing: 3px;
        margin-bottom: 10px;
    }

    .banner-subtitle {
        font-size: 12px;
        padding: 5px 14px;
        margin-bottom: 8px;
    }

    .banner-tagline {
        font-size: 11px;
    }

    .section-title {
        font-size: 18px;
        margin: 14px 0 12px;
    }

    /* 横屏空间宽，价格网格保持 4 列 */
    .price-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 10px;
    }

    .price-card {
        padding: 12px 8px;
    }

    .price-logo {
        width: 50px;
        height: 50px;
        margin-bottom: 6px;
    }

    .price-name {
        font-size: 12px;
    }

    .price-val {
        font-size: 14px;
    }

    .rules-section,
    .order-section {
        padding: 14px 16px;
        margin-bottom: 12px;
    }

    .rules-section h3,
    .order-section h3 {
        font-size: 16px;
        margin-bottom: 10px;
    }

    .rules-list li {
        font-size: 12px;
        margin: 6px 0;
        padding-left: 16px;
    }

    .form-item {
        margin-bottom: 10px;
    }

    .form-item label {
        font-size: 12px;
        margin-bottom: 4px;
    }

    .form-item input,
    .form-item textarea,
    .form-item select {
        padding: 8px 12px;
        font-size: 13px;
    }

    .form-item textarea {
        min-height: 60px;
    }

    .submit-btn {
        padding: 10px;
        font-size: 14px;
    }

    footer {
        padding: 14px 0;
        font-size: 11px;
    }
}

/* 超宽屏桌面（≥1440px）—— 充分利用横向空间 */
@media screen and (min-width: 1440px) {
    .container {
        max-width: 1320px;
    }

    .price-grid {
        grid-template-columns: repeat(5, 1fr);
        gap: 20px;
    }

    .banner-content {
        padding: 50px 25px;
    }

    .banner-title {
        font-size: 58px;
        letter-spacing: 10px;
    }
}