/* ============================================
   iGame AI筑梦艺术家 - 赛博朋克风格CSS
   ============================================ */

/* ---- CSS Variables ---- */
:root {
    --color-bg: #070b14;
    --color-bg-light: #0a1628;
    --color-bg-card: #0d1a2d;
    --color-neon-blue: #00d4ff;
    --color-neon-pink: #ff00aa;
    --color-neon-purple: #9d4edd;
    --color-neon-cyan: #00f5ff;
    --color-text: #e6f1ff;
    --color-text-muted: #8899aa;
    --color-border: #1a3a5c;
    --color-glow: rgba(0, 212, 255, 0.3);
    --font-main: 'Noto Sans SC', sans-serif;
    --font-tech: 'Orbitron', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background: var(--color-bg);
    color: var(--color-text);
    overflow-x: hidden;
    line-height: 1.6;
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-neon-blue);
}

/* ---- Navbar ---- */
#mainNav {
    /*background: rgba(7, 11, 20, 0.85);*/
    /*backdrop-filter: blur(12px);*/
    /*border-bottom: 1px solid rgba(0, 212, 255, 0.15);*/
    padding: 12px 0;
    transition: all 0.3s ease;
    z-index: 1000;
}

/*#mainNav.scrolled {*/
/*    background: rgba(7, 11, 20, 0.95);*/
/*    box-shadow: 0 4px 30px rgba(0, 212, 255, 0.1);*/
/*}*/

.brand-logo {
    height: 36px;
    /*filter: drop-shadow(0 0 8px rgba(0, 212, 255, 0.4));*/
}

.ai-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 20px;
}

.ai-icon {
    font-family: var(--font-tech);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-neon-blue);
    background: rgba(0, 212, 255, 0.15);
    padding: 2px 8px;
    border-radius: 4px;
    letter-spacing: 1px;
}

.ai-text {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text);
}

.ai-sub {
    font-size: 0.65rem;
    color: var(--color-text-muted);
    letter-spacing: 1px;
}

/* ---- Floating Submit Button ---- */
.floating-submit-btn {
    position: fixed;
    right: 30px;
    bottom: 50%;
    transform: translateY(50%);
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.8);
    border: 5px solid var(--color-text);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    z-index: 999;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 0 20px rgba(222, 212, 255, 0.5), inset 0 0 20px rgba(222, 212, 255, 0.3);
}

.floating-submit-btn:hover {
    transform: translateY(50%) scale(1.1);
    box-shadow: 0 0 40px rgba(0, 212, 255, 0.5), inset 0 0 30px rgba(0, 212, 255, 0.2);
    border-color: var(--color-neon-cyan);
}

.submit-ring {
    position: absolute;
    inset: -6px;
    border-radius: 50%;
    border: 3px solid rgba(220, 212, 255, 0.5);
    animation: pulse-ring 2s ease-out infinite;
}

@keyframes pulse-ring {
    0% { transform: scale(1); opacity: 1; }
    100% { transform: scale(1.4); opacity: 0; }
}

.submit-text {
    text-align: center;
    font-size: 1rem;
    font-weight: 500;
    /*color: var(--color-text);*/
    line-height: 1.4;
    background: linear-gradient(90deg, #8bcdd6 0%, #a7a3b0 45%, #a88d99 55%, #a25569 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ---- Hero Section ---- */
.hero-section {
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    flex-direction: column-reverse;
    overflow: hidden;
    /*padding-top: 80px;*/
    padding-bottom: 0;
    background: url("../img/e1.webp") no-repeat center bottom;
    background-size: cover;
}

.hero-bg {
    /*position: absolute;*/
    background: url("../img/e1.webp") no-repeat center bottom;
    /*inset: 0;*/
    /*background:*/
    /*        radial-gradient(ellipse at 50% 100%, rgba(0, 212, 255, 0.08) 0%, transparent 60%),*/
    /*        radial-gradient(ellipse at 50% 50%, rgba(157, 78, 221, 0.05) 0%, transparent 50%),*/
    /*        linear-gradient(180deg, #070b14 0%, #0a1628 40%, #0d1f3a 70%, #070b14 100%);*/
}

/*.city-lights {*/
/*    position: absolute;*/
/*    inset: 0;*/
/*    background:*/
/*            repeating-linear-gradient(*/
/*                    90deg,*/
/*                    transparent,*/
/*                    transparent 50px,*/
/*                    rgba(0, 212, 255, 0.03) 50px,*/
/*                    rgba(0, 212, 255, 0.03) 52px*/
/*            );*/
/*    animation: city-scroll 20s linear infinite;*/
/*}*/

@keyframes city-scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-100px); }
}

.glow-orb {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.15) 0%, transparent 70%);
    top: 10%;
    left: 50%;
    transform: translateX(-50%);
    animation: orb-float 6s ease-in-out infinite;
    filter: blur(60px);
}

@keyframes orb-float {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-30px); }
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-device {
    margin-bottom: 30px;
}

.gpu-image {
    max-width: 100%;
    height: auto;
    /*filter: drop-shadow(0 0 30px rgba(0, 212, 255, 0.5));*/
    animation: device-float 4s ease-in-out infinite;
}

@keyframes device-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 900;
    margin-bottom: 20px;
    line-height: 1.2;
}

.title-igame {
    font-family: var(--font-tech);
    color: #ffffff;
    text-shadow: 0 0 20px rgba(0, 212, 255, 0.4), 0 0 40px rgba(0, 212, 255, 0.2);
    letter-spacing: 2px;
}

.title-ai {
    color: #ffffff;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.15);
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.4rem);
    color: #00d4ff;
    font-weight: 500;
    margin-bottom: 15px;
    text-shadow: 0 0 15px rgba(0, 212, 255, 0.4);
}

.hero-date {
    font-size: 1.25rem;
    color: var(--color-text);
    margin-bottom: 0;
}

.hero-desc {
    max-width: 600px;
    margin: 50px auto;
}

.hero-desc p {
    font-size: 1.25rem;
    color: var(--color-text);
    margin-bottom: 5px;
    background: linear-gradient(90deg, #9ae4ee 0%, #a7a3b0 45%, #a88d99 55%, #b43254 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ---- Section Common ---- */
section {
    padding: 80px 0;
    position: relative;
}

.section-header {
    margin-bottom: 50px;
}

.section-title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 10px;
}

.section-title-glow {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: #00d4ff;
    text-shadow: 0 0 15px rgba(0, 212, 255, 0.4), 0 0 30px rgba(0, 212, 255, 0.2);
    position: relative;
    display: inline-block;
    padding: 10px 50px;
    border: 1px solid rgba(0, 212, 255, 0.5);
    border-radius: 4px;
    background: rgba(0, 212, 255, 0.05);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.1), inset 0 0 20px rgba(0, 212, 255, 0.03);
}

.section-title-glow::before,
.section-title-glow::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 30px;
    height: 1px;
    background: #00d4ff;
    box-shadow: 0 0 8px #00d4ff;
}

.section-title-glow::before {
    left: 10px;
}

.section-title-glow::after {
    right: 10px;
}

.section-subtitle {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* ---- Flow Section ---- */
.flow-section {
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-light) 50%, var(--color-bg) 100%);
}

.flow-steps {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 0;
    max-width: 1100px;
    margin: 0 auto;
}

.flow-step {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.step-box {
    background: rgba(13, 26, 45, 0.8);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 25px 20px;
    min-width: 140px;
    text-align: center;
    position: relative;
    transition: all 0.3s ease;
}

.step-box:hover {
    border-color: var(--color-neon-blue);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.15);
    transform: translateY(-5px);
}

.step-icon {
    width: 50px;
    height: 50px;
    margin: 0 auto 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-neon-blue);
}

.step-title {
    font-size: 1rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 8px;
}

.step-btn {
    background: rgba(0, 212, 255, 0.15);
    border: 1px solid var(--color-neon-blue);
    color: var(--color-neon-blue);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.step-btn:hover {
    background: var(--color-neon-blue);
    color: var(--color-bg);
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.4);
}

.step-arrow {
    padding: 0 10px;
    color: var(--color-neon-blue);
    opacity: 0.6;
}

/* ---- Themes Section ---- */
.themes-section {
    background: var(--color-bg);
    position: relative;
}

/*.themes-section::before {*/
/*    content: '';*/
/*    position: absolute;*/
/*    top: 0;*/
/*    left: 0;*/
/*    right: 0;*/
/*    height: 1px;*/
/*    background: linear-gradient(90deg, transparent, var(--color-neon-blue), transparent);*/
/*    opacity: 0.3;*/
/*}*/

.theme-card {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: all 0.4s ease;
    cursor: pointer;
    background: var(--color-bg-card);
}

.theme-card:hover {
    border-color: #772e62;
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.2);
    transform: translateY(-8px);
}

.theme-image {
    width: 100%;
    aspect-ratio: 3/4;
    overflow: hidden;
}

.theme-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.theme-card:hover .theme-image img {
    transform: scale(1.08);
}

.theme-overlay {
    /*position: absolute;*/
    /*bottom: 0;*/
    /*left: 0;*/
    /*right: 0;*/
    padding: 20px;
    background: linear-gradient(transparent, rgba(7, 11, 20, 0.95));
}

.theme-name {
    font-family: var(--font-tech);
    font-size: 1.85rem;
    /*font-weight: 700;*/
    /*color: var(--color-neon-blue);*/
    margin-bottom: 8px;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.3);
}

.theme-tag {
    display: inline-block;
    font-size: 0.7rem;
    padding: 3px 10px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(220, 212, 255, 0.3);
    border-radius: 12px;
    color: #ccc;
    margin-right: 5px;
    margin-bottom: 5px;
}

.themes-note {
    font-size: 0.75rem;
    color: red;
    opacity: 0.7;
    line-height: 1.8;
}

/* ---- Prizes Section ---- */
.prizes-section {
    background: linear-gradient(180deg, var(--color-bg) 0%, rgba(10, 22, 40, 0.5) 50%, var(--color-bg) 100%);
}

.grand-prize {
    background: rgba(13, 26, 45, 0.6);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    padding: 40px;
    margin-bottom: 40px;
    position: relative;
    /*overflow: hidden;*/
}

.grand-prize::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.05) 0%, transparent 60%);
    animation: prize-glow 8s ease-in-out infinite;
}

@keyframes prize-glow {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.prize-image {
    position: relative;
    z-index: 99;
}

.prize-image img {
    max-width: 100%;
    /*border-radius: 12px;*/
    /*border: 1px solid var(--color-border);*/
    margin-left: -50px;
}

.prize-info {
    position: relative;
    z-index: 1;
}

.prize-title {
    font-size: 1.5rem;
    font-weight: 700;
    /*color: #00d4ff;*/
    margin-bottom: 20px;
    /*text-shadow: 0 0 15px rgba(0, 212, 255, 0.3);*/
}

.prize-details p {
    color: #ffffff;
    margin-bottom: 8px;
}

.prize-details ul li {
    color: #dedede;
    padding-left: 20px;
    position: relative;
    margin-bottom: 5px;
}

.prize-details ul {
    list-style: none;
    padding: 0;
    margin-bottom: 15px;
}

.prize-details ul li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--color-neon-blue);
}

.prize-note {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    opacity: 0.7;
}

/* Secondary Prizes */
.prize-card {
    background: rgba(13, 26, 45, 0.6);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 30px 20px;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.prize-card:hover {
    border-color: var(--color-neon-blue);
    box-shadow: 0 0 25px rgba(0, 212, 255, 0.15);
    transform: translateY(-5px);
}

.prize-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 15px;
    /*border-radius: 50%;*/
    overflow: hidden;
    /*border: 2px solid var(--color-border);*/
}

.prize-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.prize-card-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: #1ab6e3;
    margin-bottom: 8px;
}

.prize-card-value {
    font-size: 0.85rem;
    color: #ff4444;
    font-weight: 500;
}

.prizes-note {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    opacity: 0.6;
}


/* ---- Rules Section ---- */
.rules-section {
    background: var(--color-bg);
    position: relative;
}

.rules-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-neon-purple), transparent);
    opacity: 0.3;
}

.rules-content {
    max-width: 800px;
    margin: 0 auto;
}

.rule-block {
    background: rgba(13, 26, 45, 0.4);
    /*border: 1px solid var(--color-border);*/
    border-radius: 12px;
    padding: 25px 30px;
    margin-bottom: 20px;
}

.rule-title {
    font-size: 1rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 12px;
}

.rule-block p {
    font-size: 0.85rem;
    color: var(--color-text);
    margin-bottom: 6px;
    line-height: 1.7;
}

.rule-block strong {
    color: var(--color-text);
    font-weight: 600;
}
/* ---- Submit Modal ---- */
.modal.fade .modal-dialog {
    transition: transform 0.3s ease-out;
}

.cyber-modal {
    background: #0d1117;
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 12px;
    box-shadow: 0 0 60px rgba(0, 212, 255, 0.15), 0 0 120px rgba(0, 212, 255, 0.05);
}

.cyber-modal .modal-header {
    border-bottom: 1px solid rgba(0, 212, 255, 0.15);
    padding: 20px 30px;
}

.cyber-modal .modal-title {
    font-family: var(--font-tech);
    font-size: 1.3rem;
    font-weight: 700;
    color: #ffffff;
    text-shadow: 0 0 15px rgba(0, 212, 255, 0.4);
    letter-spacing: 1px;
    width: 100%;
    text-align: center;
}

.cyber-modal .btn-close {
    opacity: 0.6;
    transition: all 0.3s ease;
}

.cyber-modal .btn-close:hover {
    opacity: 1;
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.4);
}

.cyber-modal .modal-body {
    padding: 25px 30px 30px;
}

/* ---- Form Elements ---- */
.cyber-modal .form-label {
    font-size: 0.85rem;
    color: #a0b4cc;
    margin-bottom: 8px;
    font-weight: 400;
}

.cyber-modal .required {
    color: #ff4444;
    margin-left: 2px;
}

.cyber-modal .label-hint {
    color: #5a6a7a;
    font-size: 0.75rem;
    margin-left: 4px;
}

.cyber-input {
    background: rgba(255, 255, 255, 0.05) !important;
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
    border-radius: 8px !important;
    color: #ffffff !important;
    padding: 12px 15px !important;
    font-size: 0.9rem !important;
    transition: all 0.3s ease;
}

.cyber-input:focus {
    background: rgba(255, 255, 255, 0.08) !important;
    border-color: rgba(0, 212, 255, 0.5) !important;
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.1) !important;
    color: #ffffff !important;
}

.cyber-input::placeholder {
    color: #5a6a7a !important;
    font-size: 0.85rem;
}

.cyber-input option {
    background: #0d1117;
    color: #ffffff;
}

select.cyber-input {
    appearance: auto;
    -webkit-appearance: auto;
}

select.cyber-input:invalid {
    color: #5a6a7a !important;
}

textarea.cyber-input {
    resize: vertical;
    min-height: 100px;
}

/* ---- Upload Zone ---- */
/*.upload-zone {*/
/*    position: relative;*/
/*    border: 1px dashed rgba(255, 255, 255, 0.15);*/
/*    border-radius: 10px;*/
/*    padding: 30px 20px;*/
/*    text-align: center;*/
/*    background: rgba(255, 255, 255, 0.02);*/
/*    transition: all 0.3s ease;*/
/*    cursor: pointer;*/
/*    min-height: 140px;*/
/*    display: flex;*/
/*    align-items: center;*/
/*    justify-content: center;*/
/*    overflow: hidden;*/
/*}*/

/*.upload-zone:hover {*/
/*    border-color: rgba(0, 212, 255, 0.4);*/
/*    background: rgba(0, 212, 255, 0.03);*/
/*}*/

/*.upload-zone.dragover {*/
/*    border-color: #00d4ff;*/
/*    background: rgba(0, 212, 255, 0.05);*/
/*}*/

/*.file-input {*/
/*    position: absolute;*/
/*    inset: 0;*/
/*    width: 100%;*/
/*    height: 100%;*/
/*    opacity: 0;*/
/*    cursor: pointer;*/
/*    z-index: 2;*/
/*}*/

/*.upload-content {*/
/*    pointer-events: none;*/
/*}*/

/*.upload-icon {*/
/*    color: #5a6a7a;*/
/*    margin-bottom: 10px;*/
/*}*/

/*.upload-title {*/
/*    font-size: 0.8rem;*/
/*    color: #a0b4cc;*/
/*    margin-bottom: 4px;*/
/*}*/

/*.upload-hint {*/
/*    font-size: 0.7rem;*/
/*    color: #5a6a7a;*/
/*    margin-bottom: 0;*/
/*}*/

/*.upload-preview {*/
/*    position: absolute;*/
/*    inset: 0;*/
/*    display: none;*/
/*    align-items: center;*/
/*    justify-content: center;*/
/*    background: rgba(0, 0, 0, 0.6);*/
/*    z-index: 1;*/
/*}*/

/*.upload-preview.active {*/
/*    display: flex;*/
/*}*/

/*.upload-preview img {*/
/*    max-width: 100%;*/
/*    max-height: 130px;*/
/*    border-radius: 6px;*/
/*}*/

/*.upload-preview video {*/
/*    max-width: 100%;*/
/*    max-height: 130px;*/
/*    border-radius: 6px;*/
/*}*/

/*.upload-preview .preview-name {*/
/*    color: #a0b4cc;*/
/*    font-size: 0.75rem;*/
/*    margin-left: 10px;*/
/*}*/

/* ---- Form Tip ---- */
.form-tip {
    display: flex;
    align-items: flex-start;
    gap: 6px;
    padding: 12px 15px;
    background: rgba(255, 68, 68, 0.05);
    border: 1px solid rgba(255, 68, 68, 0.15);
    border-radius: 8px;
}

.tip-dot {
    color: #ff4444;
    font-weight: 700;
    flex-shrink: 0;
}

.tip-text {
    font-size: 0.8rem;
    color: #a0b4cc;
    line-height: 1.5;
}

.hashtag {
    color: #ff4444;
    font-weight: 500;
}

.upload-preview .remove-file {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: rgba(255, 68, 68, 0.8);
    border: none;
    color: #ffffff;
    font-size: 1rem;
    line-height: 1;
    cursor: pointer;
    z-index: 3;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.upload-preview .remove-file:hover {
    background: #ff4444;
    transform: scale(1.1);
}

/* ---- Submit Button ---- */
.btn-submit {
    background: linear-gradient(135deg, #e60012 0%, #ff2d55 100%);
    border: none;
    color: #ffffff;
    font-size: 1rem;
    font-weight: 600;
    padding: 14px 60px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    letter-spacing: 1px;
}

.btn-submit::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn-submit:hover {
    box-shadow: 0 0 30px rgba(230, 0, 18, 0.4);
    transform: translateY(-2px);
}

.btn-submit:hover::before {
    left: 100%;
}

.btn-submit:active {
    transform: translateY(0);
}

.form-disclaimer {
    text-align: center;
    font-size: 0.7rem;
    color: #5a6a7a;
    margin-top: 15px;
    margin-bottom: 0;
}

/* ---- Modal Backdrop ---- */
.modal-backdrop.show {
    opacity: 0.85;
    background: #000000;
}

/* ---- Validation States ---- */
.cyber-input.is-invalid {
    border-color: #ff4444 !important;
    box-shadow: 0 0 10px rgba(255, 68, 68, 0.2) !important;
}

.cyber-input.is-valid {
    border-color: #00d4ff !important;
}

.invalid-feedback {
    color: #ff4444;
    font-size: 0.75rem;
    margin-top: 4px;
}
/* ---- Footer ---- */
.site-footer {
    background: rgba(7, 11, 20, 0.9);
    border-top: 1px solid var(--color-border);
    padding: 30px 0;
}

.footer-text {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    opacity: 0.6;
}

/* ---- Trig.js Animation Enhancements ---- */
.trig-fade {
    opacity: 0;
    transition: opacity var(--trig-duration, 0.8s) var(--trig-blend, ease-out);
}

.trig-fade.trig {
    opacity: 1;
}

.trig-grow {
    transform: scale(0.8);
    opacity: 0;
    transition: all var(--trig-duration, 0.8s) var(--trig-blend, ease-out);
}

.trig-grow.trig {
    transform: scale(1);
    opacity: 1;
}

.trig-grow-up {
    transform: translateY(60px);
    opacity: 0;
    transition: all var(--trig-duration, 0.8s) var(--trig-blend, ease-out);
}

.trig-grow-up.trig {
    transform: translateY(0);
    opacity: 1;
}

.trig-pop {
    transform: scale(0.5);
    opacity: 0;
    transition: all var(--trig-duration, 0.6s) var(--trig-blend, ease-out);
}

.trig-pop.trig {
    transform: scale(1);
    opacity: 1;
}

.trig-pop-up {
    transform: translateY(80px) scale(0.9);
    opacity: 0;
    transition: all var(--trig-duration, 0.7s) var(--trig-blend, ease-out);
}

.trig-pop-up.trig {
    transform: translateY(0) scale(1);
    opacity: 1;
}

/* ---- Responsive ---- */
@media (max-width: 991px) {
    .flow-steps {
        flex-direction: column;
        align-items: center;
    }

    .flow-step {
        flex-direction: column;
        width: 100%;
        max-width: 300px;
    }

    .step-arrow {
        transform: rotate(90deg);
        margin: 10px 0;
    }

    .floating-submit-btn {
        width: 65px;
        height: 65px;
        right: 15px;
    }

    .submit-text {
        font-size: 0.65rem;
    }

    .hero-section {
        padding-top: 100px;
    }

    .grand-prize {
        padding: 25px;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 1.6rem;
    }

    .gpu-image {
        /*max-width: 120px;*/
    }

    .theme-card {
        max-width: 280px;
        margin: 0 auto;
    }

    .prize-card {
        max-width: 280px;
        margin: 0 auto;
    }

    section {
        padding: 50px 0;
    }
}

/* ---- Animation Delays for Staggered Effects ---- */
[data-trig-delay="0.15s"] { --trig-delay: 0.15s; }
[data-trig-delay="0.3s"] { --trig-delay: 0.3s; }
[data-trig-delay="0.45s"] { --trig-delay: 0.45s; }
[data-trig-delay="0.6s"] { --trig-delay: 0.6s; }
[data-trig-delay="0.8s"] { --trig-delay: 0.8s; }

/* Apply delays */
.enable-trig[style*="--trig-delay"],
[data-trig][style*="--trig-delay"] {
    transition-delay: var(--trig-delay, 0s);
}
.t1{
    background: linear-gradient(90deg, #8bcdd6 0%, #8bcdd6 45%, #a25569 55%, #a25569 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.t2{
    background: linear-gradient(90deg, #8bcdd6 0%, #a7a3b0 45%, #a88d99 55%, #a25569 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.bg{
    background: url("../img/e2.webp") no-repeat center center;
    background-size: cover;
}
.flow {
    display: flex;
    max-width: 1200px;
    margin: 0 auto;
    /*border: 2px solid #b66cff;*/
    overflow: hidden;
}

.step {
    flex: 1;
    min-width: 180px;
    height: 140px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    margin-right: 1px; /* 间隙宽度 */
}

/* 渐变背景层 */
.step::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #5bbcff 0%, #ff7a7a 100%);
    /* 切出：左侧V口 + 右侧箭头 */
    clip-path: polygon(
            0% 0%,           /* 左上 */
            calc(100% - 24px) 0%,  /* 右上（留箭头空间） */
            100% 50%,        /* 箭头尖端 */
            calc(100% - 24px) 100%, /* 右下 */
            0% 100%,         /* 左下 */
            24px 50%         /* 左侧V口尖端 */
    );
}

/* 第一个步骤没有左侧V口 */
.step:first-child::before {
    clip-path: polygon(
            0% 0%,
            calc(100% - 24px) 0%,
            100% 50%,
            calc(100% - 24px) 100%,
            0% 100%
    );
}

/* 最后一步没有右侧箭头 */
.step:last-child {
    margin-right: 0;
}
/* 修复：最后一步左侧改成和中间步骤一样的V口 */
.step:last-child::before {
    clip-path: polygon(
            0% 0%,        /* 左上 */
            100% 0%,      /* 右上 */
            100% 100%,    /* 右下 */
            0% 100%,      /* 左下 */
            24px 50%      /* 左侧V口内点 */
    );
}

/* 只有一步的情况 */
.step:first-child:last-child::before {
    clip-path: none;
    border-radius: 0;
}

/* 虚线间隙效果 - 用伪元素画虚线边框 */
/*.step:not(:last-child)::after {*/
/*    content: '';*/
/*    position: absolute;*/
/*    right: 0;*/
/*    top: 15%;*/
/*    height: 70%;*/
/*    width: 2px;*/
/*    background: repeating-linear-gradient(*/
/*            to bottom,*/
/*            rgba(255,255,255,0.8) 0px,*/
/*            rgba(255,255,255,0.8) 6px,*/
/*            transparent 6px,*/
/*            transparent 12px*/
/*    );*/
/*    z-index: 2;*/
/*}*/

/* 内容层 */
.step-inner {
    position: relative;
    z-index: 1;
    text-align: center;
}

.step-title {
    font-size: 22px;
    font-weight: 600;
    letter-spacing: 2px;
    margin-bottom: 0;
}

.btn-download {
    display: inline-block;
    padding: 8px 20px;
    background: #ff4d4f;
    color: #fff;
    text-decoration: none;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-download:hover {
    background: #ff7875;
    transform: scale(1.05);
}

/* 大背景数字 */
.step-num {
    position: absolute;
    font-size: 120px;
    font-weight: 900;
    opacity: 0.2;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    line-height: 1;
}

/* 响应式 */
@media (max-width: 768px) {
    .flow {
        flex-direction: column;
    }

    .step {
        margin-right: 0;
        margin-bottom: 16px;
        height: 100px;
    }

    .step::before {
        clip-path: none !important;
        border-radius: 8px;
    }

    .step::after {
        display: none;
    }
}
/* 渐变边框 */
.gradient-border::before {
    content: '';
    position: absolute;
    inset: 0;
    padding: 2px;  /* 边框粗细 */
    border-radius: inherit;
    background: linear-gradient(180deg, #30527b 0%, #3a4369 35%, #4f2e59 75%, #892368 100%);
    -webkit-mask:
            linear-gradient(#fff 0 0) content-box,
            linear-gradient(#fff 0 0);
    mask:
            linear-gradient(#fff 0 0) content-box,
            linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
    z-index: 10;
}

/* ============================================================
  FilePond 暗色主题适配
   添加到 main.css 末尾
   ============================================================ */
/* FilePond 暗色主题适配 */
.filepond--root {
    font-family: 'Noto Sans SC', sans-serif;
    margin-bottom: 0;
}

.filepond--panel-root {
    background: rgba(0, 0, 0, 0.3);
    border: 2px dashed rgba(255, 255, 255, 0.2);
    border-radius: 8px;
}

.filepond--drop-label {
    color: rgba(255, 255, 255, 0.4);
    font-size: 14px;
}

.filepond--label-action {
    color: #00d4ff;
    text-decoration: none;
    font-weight: 500;
}

.filepond--item {
    width: calc(33.333% - 0.5em);
}

.filepond--item-panel {
    background: rgba(0, 0, 0, 0.5);
    border-radius: 6px;
}

.filepond--file-info-sub {
    color: rgba(255, 255, 255, 0.5);
}

.filepond--file-status-main {
    color: #ff6b6b;
}

.filepond--image-preview-wrapper {
    border-radius: 6px;
}

/* 视频文件样式 */
.filepond--file [data-filetype="video/mp4"] .filepond--file-info-main {
    color: #00d4ff;
}

/* ============================================================
   流程说明模块样式
   ============================================================ */

.process-section {
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-light) 50%, var(--color-bg) 100%);
    padding: 80px 0;
    color: #fff;
}

/* 时间线容器 */
.process-timeline {
    position: relative;
    max-width: 980px;
    margin: 0 auto;
    padding: 40px;
}

/* 每个流程项 */
.process-item {
    display: flex;
    margin-bottom: 10px;
    position: relative;
}

.process-item:last-child {
    margin-bottom: 0;
}

/* 左侧：编号 + 连线 */
.process-left {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 60px;
    flex-shrink: 0;
    position: relative;
}

/* 编号 */
.process-number {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    position: relative;
    z-index: 2;
    flex-shrink: 0;
}

/* 编号渐变背景 */
.number-1 {
    background: linear-gradient(180deg, #b8415f 0%, #b74161 100%);
    box-shadow: 0 4px 15px rgba(255, 107, 157, 0.4);
}

.number-2 {
    background: linear-gradient(180deg, #b94462 0%, #b94b69 100%);
    box-shadow: 0 4px 15px rgba(248, 181, 0, 0.4);
}

.number-3 {
    background: linear-gradient(180deg, #b9687b 0%, #956672 100%);
    box-shadow: 0 4px 15px rgba(162, 155, 254, 0.4);
}

.number-4 {
    background: linear-gradient(80deg, #76d7e0 0%, #79f5fe 100%);
    box-shadow: 0 4px 15px rgba(0, 210, 211, 0.4);
}

.number-5 {
    background: linear-gradient(180deg, #79f5fd 0%, #0abde3 100%);
    box-shadow: 0 4px 15px rgba(72, 219, 251, 0.4);
}

/* 连线 */
.process-line {
    width: 2px;
    flex: 1;
    min-height: 60px;
    margin-top: 8px;
}
.process-line1 {
    background: linear-gradient(to bottom, rgb(183 64 96) 0%, rgb(164 61 89) 100%);
}
.process-line2 {
    background: linear-gradient(to bottom, rgb(165 67 93) 0%, rgb(175 95 116) 100%);
}
.process-line3 {
    background: linear-gradient(to bottom, rgb(164 114 127) 0%, rgb(124 232 241) 100%);
}
.process-line4 {
    background: linear-gradient(to bottom, rgb(108 217 224) 0%, rgb(108 239 250) 100%);
}

/* 右侧内容 */
.process-content {
    flex: 1;
    margin-left: 24px;
    padding-top: 8px;
}

/* 标题 */
.process-title {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: 1px;
}

.title-sub {
    font-size: 16px;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.7);
    margin-left: 8px;
}

.title-1 { color: #ff6b9d; }
.title-2 { color: #f8b500; }
.title-3 { color: #a29bfe; }
.title-4 { color: #00d2d3; }
.title-5 { color: #48dbfb; }

/* 正文 */
.process-body {
    /*overflow: hidden;*/
    font-size: 15px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.85);
}

.process-body p {
    margin-bottom: 8px;
}

/* 链接 */
.process-link {
    color: #00d4ff;
    text-decoration: none;
    font-size: 14px;
    word-break: break-all;
    display: inline-block;
    margin-top: 4px;
}

.process-link:hover {
    text-decoration: underline;
}

/* 注释文字 */
.process-note {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
}

.process-note-small {
    color: rgba(255, 255, 255, 0.5);
    font-size: 13px;
    line-height: 1.6;
}

.process-subnote {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    padding-left: 16px;
    border-left: 2px solid rgba(255, 255, 255, 0.2);
}

.process-subnote p {
    margin-bottom: 4px;
}

/* 提交内容表格 */
.submit-table-wrapper {
    margin: 16px 0;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.submit-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.submit-table thead {
    background: rgba(255, 255, 255, 0.08);
}

.submit-table th {
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    color: #fff;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.submit-table td {
    padding: 12px 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    color: rgba(255, 255, 255, 0.8);
    vertical-align: top;
}

.submit-table tbody tr:last-child td {
    border-bottom: none;
}

.submit-table tbody tr:nth-child(even) {
    background: rgba(255, 255, 255, 0.02);
}

.col-content {
    width: 120px;
    font-weight: 500;
    color: #fff;
    white-space: nowrap;
}

.col-desc {
    line-height: 1.6;
}

/* 话题标签 */
.hashtag {
    color: #00d4ff;
    font-weight: 500;
}

/* 作品上传说明按钮 */
.upload-instruction-box {
    display: inline-block;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    padding: 10px 24px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.upload-instruction-box:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
}

.upload-instruction-text {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
}

/* 抽奖信息 */
.lottery-info {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    padding: 16px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.7;
}

.lottery-info p {
    margin-bottom: 4px;
}

/* 间距工具 */
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 16px; }

/* 响应式 */
@media (max-width: 768px) {
    .process-left {
        width: 48px;
    }

    .process-number {
        width: 40px;
        height: 40px;
        font-size: 16px;
        border-radius: 10px;
    }

    .process-content {
        margin-left: 16px;
    }

    .process-title {
        font-size: 18px;
    }

    .title-sub {
        display: block;
        margin-left: 0;
        margin-top: 4px;
    }

    .submit-table {
        font-size: 13px;
    }

    .submit-table th,
    .submit-table td {
        padding: 10px 12px;
    }

    .col-content {
        width: 100px;
    }
}

@media (max-width: 576px) {
    .process-section {
        padding: 50px 0;
    }

    .process-item {
        margin-bottom: 36px;
    }

    .process-body {
        font-size: 14px;
    }

    .submit-table-wrapper {
        overflow-x: auto;
    }

    .submit-table {
        min-width: auto;
    }
}
.process-timeline::before {
    content: '';
    position: absolute;
    inset: 0;
    padding: 2px;
    border-radius: inherit;
    background: linear-gradient(180deg, #30527b 0%, #3a4369 35%, #4f2e59 75%, #892368 100%);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
    z-index: 10;
}
/* ============================================================
   流程编号 - 六边形（上方角朝上）
   ============================================================ */

/* 六边形容器 */
.process-number {
    position: relative;
    width: 48px;
    height: 55px;  /* 宽度 * 1.1547 ≈ 55.4，取整 */
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    z-index: 2;
    flex-shrink: 0;
    /* 使用 clip-path 裁剪六边形 - 上方角朝上 */
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
}

/* 响应式 */
@media (max-width: 768px) {
    .process-number {
        width: 40px;
        height: 46px;
        font-size: 16px;
    }
}
/* ============================================================
   Q&A 问答模块样式 - 赛博朋克暗色主题
   ============================================================ */

.qa-section {
    background: linear-gradient(180deg, #070b14 0%, #0d1a2d 50%, #070b14 100%);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

/* 背景装饰 */
.qa-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-neon-blue), transparent);
    opacity: 0.3;
}

.qa-section::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-neon-purple), transparent);
    opacity: 0.3;
}

/* 标题区域 */
.qa-section .section-header {
    margin-bottom: 50px;
}

.qa-section .section-title-glow {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: #00d4ff;
    text-shadow: 0 0 15px rgba(0, 212, 255, 0.4), 0 0 30px rgba(0, 212, 255, 0.2);
    position: relative;
    display: inline-block;
    padding: 10px 50px;
    border: 1px solid rgba(0, 212, 255, 0.5);
    border-radius: 4px;
    background: rgba(0, 212, 255, 0.05);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.1), inset 0 0 20px rgba(0, 212, 255, 0.03);
    letter-spacing: 2px;
}

.qa-section .section-title-glow::before,
.qa-section .section-title-glow::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 30px;
    height: 1px;
    background: #00d4ff;
    box-shadow: 0 0 8px #00d4ff;
}

.qa-section .section-title-glow::before {
    left: 10px;
}

.qa-section .section-title-glow::after {
    right: 10px;
}

.qa-section .section-subtitle {
    font-size: 1rem;
    color: var(--color-text-muted);
    margin-top: 10px;
    letter-spacing: 4px;
}

/* Q&A 列表 */
.qa-list {
    max-width: 800px;
    margin: 0 auto;
}

/* 单个 Q&A 项 */
.qa-item {
    margin-bottom: 16px;
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-radius: 12px;
    background: rgba(13, 26, 45, 0.6);
    overflow: hidden;
    transition: all 0.3s ease;
}

.qa-item:hover {
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.1);
}

.qa-item.active {
    border-color: rgba(0, 212, 255, 0.4);
    box-shadow: 0 0 25px rgba(0, 212, 255, 0.15);
}

/* 问题区域 */
.qa-question {
    display: flex;
    align-items: center;
    padding: 20px 24px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.qa-question:hover {
    background: rgba(0, 212, 255, 0.05);
}

/* Q 图标 */
.qa-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: linear-gradient(135deg, #b25b71 0%, #b84061 100%);
    color: #fff;
    font-weight: 700;
    font-size: 14px;
    margin-right: 16px;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(255, 107, 157, 0.3);
}

/* A 图标 */
.qa-icon-a {
    background: linear-gradient(135deg, #00d4ff 0%, #0099cc 100%);
    box-shadow: 0 2px 8px rgba(0, 212, 255, 0.3);
}

/* 问题文字 */
.qa-text {
    flex: 1;
    font-size: 16px;
    font-weight: 500;
    color: #fff;
    line-height: 1.5;
}

/* 箭头图标 */
.qa-arrow {
    color: rgba(255, 255, 255, 0.5);
    font-size: 18px;
    transition: all 0.3s ease;
    flex-shrink: 0;
    margin-left: 12px;
}

.qa-item.active .qa-arrow {
    transform: rotate(180deg);
    color: #00d4ff;
}

/* 答案区域 */
.qa-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}

.qa-item.active .qa-answer {
    max-height: 500px;
}

.qa-answer-inner {
    display: flex;
    align-items: flex-start;
    padding: 0 24px 20px 24px;
    border-top: 1px solid rgba(0, 212, 255, 0.1);
    margin-top: 0;
    padding-top: 20px;
}

.qa-answer-inner p {
    flex: 1;
    font-size: 15px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
    padding-left: 16px;
    border-left: 2px solid rgba(0, 212, 255, 0.2);
}

/* 响应式 */
@media (max-width: 768px) {
    .qa-section {
        padding: 50px 0;
    }

    .qa-question {
        padding: 16px 20px;
    }

    .qa-answer-inner {
        padding: 0 20px 16px 20px;
        padding-top: 16px;
    }

    .qa-text {
        font-size: 15px;
    }

    .qa-answer-inner p {
        font-size: 14px;
    }

    .qa-icon {
        width: 28px;
        height: 28px;
        font-size: 13px;
    }
}

@media (max-width: 576px) {
    .qa-section .section-title-glow {
        padding: 8px 30px;
        font-size: 1.3rem;
    }

    .qa-section .section-title-glow::before,
    .qa-section .section-title-glow::after {
        width: 20px;
    }

    .qa-item {
        margin-bottom: 12px;
        border-radius: 10px;
    }
}
/* ============================================================
   主题卡片 - 悬停播放视频样式
   ============================================================ */

/* 媒体容器 */
.theme-media {
    position: relative;
    width: 100%;
    aspect-ratio: 3/4;
    overflow: hidden;
    border-radius: 16px 16px 0 0;
    cursor: pointer;
}

/* 封面图片 */
.theme-poster {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: opacity 0.4s ease, transform 0.5s ease;
    z-index: 2;
}

/* 视频元素 */
.theme-video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 1;
}

/* 播放指示器 */
.video-indicator {
    position: absolute;
    bottom: 12px;
    right: 12px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.3s ease;
    z-index: 3;
    pointer-events: none;
}

/* 悬停状态 */
.theme-card:hover .theme-poster {
    opacity: 0;
    transform: scale(1.05);
}

.theme-card:hover .theme-video {
    opacity: 1;
}

/*.theme-card:hover .video-indicator {*/
/*    opacity: 1;*/
/*    transform: scale(1);*/
/*}*/

/* 视频播放时隐藏指示器 */
.theme-media.playing .video-indicator {
    opacity: 0;
    transform: scale(0.8);
}

/* 主题卡片其他样式保持不变 */
.theme-card {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: all 0.4s ease;
    cursor: pointer;
    background: var(--color-bg-card);
}

.theme-card:hover {
    border-color: #772e62;
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.2);
    transform: translateY(-8px);
}

.theme-overlay {
    padding: 20px;
    background: linear-gradient(transparent, rgba(7, 11, 20, 0.95));
}

.theme-name {
    font-family: var(--font-tech);
    font-size: 1.85rem;
    margin-bottom: 8px;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.3);
}

.theme-tag {
    display: inline-block;
    font-size: 0.7rem;
    padding: 3px 10px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(220, 212, 255, 0.3);
    border-radius: 12px;
    color: #ccc;
    margin-right: 5px;
    margin-bottom: 5px;
}

.themes-note {
    font-size: 0.75rem;
    color: red;
    opacity: 0.7;
    line-height: 1.8;
}

/* 渐变边框 */
.gradient-border::before {
    content: '';
    position: absolute;
    inset: 0;
    padding: 2px;
    border-radius: inherit;
    background: linear-gradient(180deg, #30527b 0%, #3a4369 35%, #4f2e59 75%, #892368 100%);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
    z-index: 10;
}

/* 响应式 */
@media (max-width: 576px) {
    .theme-card {
        max-width: 280px;
        margin: 0 auto;
    }

    .theme-media {
        aspect-ratio: 4/5;
    }
}
/* ============================================
   移动端优化补丁 - 添加到 main.css 末尾
   ============================================ */

/* ---- 通用移动端基础优化 ---- */
@media (max-width: 768px) {
    html { font-size: 14px; }
    body { overflow-x: hidden; }
    .container { padding-left: 12px; padding-right: 12px; }
    section { padding: 40px 0; }
    .brand-logo { height: 28px; }
}

/* ---- 流程步骤移动端优化 ---- */
@media (max-width: 768px) {
    .flow { flex-direction: column; gap: 12px; }
    .step { min-width: auto; height: auto; padding: 20px; margin-right: 0; }
    .step::before { clip-path: none !important; border-radius: 12px; }
    .step-num { font-size: 80px; }
    .step-title { font-size: 18px; }
}

/* ---- 流程时间线移动端优化 ---- */
@media (max-width: 768px) {
    .process-timeline { padding: 20px 15px; }
    .process-item { flex-direction: column; margin-bottom: 30px; }
    .process-left { flex-direction: row; width: 100%; margin-bottom: 12px; }
    .process-number { width: 40px; height: 46px; font-size: 16px; }
    .process-line { display: none; }
    .process-content { margin-left: 0; padding-top: 0; }
    .process-title { font-size: 18px; }
    .title-sub { display: block; margin-left: 0; margin-top: 4px; font-size: 14px; }
}

/* ============================================
   表格移动端优化 - 核心修复（卡片式布局）
   ============================================ */
@media (max-width: 576px) {
    .submit-table-wrapper { overflow-x: visible; border: none; background: transparent; }
    .submit-table, .submit-table thead, .submit-table tbody,
    .submit-table th, .submit-table td, .submit-table tr { display: block; width: 100%; }
    .submit-table thead { display: none; }
    .submit-table tbody tr {
        margin-bottom: 12px;
        background: rgba(13, 26, 45, 0.6);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: 10px;
        padding: 12px;
    }
    .submit-table tbody tr:nth-child(even) { background: rgba(13, 26, 45, 0.6); }
    .submit-table td {
        border-bottom: none; padding: 6px 0;
        position: relative; padding-left: 80px;
    }
    .submit-table td::before {
        content: attr(data-label);
        position: absolute; left: 0; top: 6px;
        font-weight: 600; color: #00d4ff; font-size: 12px;
    }
    .submit-table .col-content::before { content: "提交内容"; }
    .submit-table .col-desc::before { content: "说明"; }
    .col-content { font-weight: 600; color: #fff; font-size: 14px; }
    .col-desc { font-size: 13px; line-height: 1.6; color: rgba(255, 255, 255, 0.8); }

}

/* 576px-768px 表格支持横向滚动 */
@media (max-width: 768px) and (min-width: 577px) {
    .submit-table-wrapper { overflow-x: auto; -webkit-overflow-scrolling: touch; }
    .submit-table { min-width: 100%; font-size: 13px; }
    .submit-table th, .submit-table td { padding: 10px 12px; white-space: nowrap; }
}

/* ---- 主题卡片移动端优化 ---- */
@media (max-width: 768px) {
    .theme-card { max-width: 100%; }
    /*.theme-media { aspect-ratio: 16/9; }*/
    .theme-name { font-size: 1.4rem; }
    .video-indicator {
        opacity: 1;
        transform: scale(1);
    }
    .theme-media.playing .video-indicator {
        opacity: 0;
        transform: scale(0.8);
    }
}

/* ---- 奖品区域移动端优化 ---- */
@media (max-width: 768px) {
    .grand-prize { padding: 20px; }
    .prize-image img { margin-left: 0; max-width: 100%; }
    .prize-card { max-width: 100%; }
}

/* ---- Q&A 移动端优化 ---- */
@media (max-width: 576px) {
    .qa-question { padding: 14px 16px; }
    .qa-text { font-size: 14px; }
    .qa-answer-inner { padding: 0 16px 14px; padding-top: 14px; }
    .qa-answer-inner p { font-size: 13px; padding-left: 12px; }
    .qa-icon { width: 26px; height: 26px; font-size: 12px; }
}

/* ---- 浮动按钮移动端优化 ---- */
@media (max-width: 768px) {
    .floating-submit-btn {
        width: 60px; height: 60px; right: 12px; bottom: 20px;
        transform: none;
    }
    .floating-submit-btn:hover { transform: scale(1.05); }
    .submit-text { font-size: 0.75rem; }
}

/* ---- 弹窗表单移动端优化 ---- */
@media (max-width: 768px) {
    .modal-dialog { margin: 10px; }
    .cyber-modal .modal-header { padding: 15px 20px; }
    .cyber-modal .modal-body { padding: 15px 20px 20px; }
    .cyber-modal .modal-title { font-size: 1.1rem; }
    .btn-submit { padding: 12px 40px; font-size: 0.9rem; width: 100%; }
    .form-tip { padding: 10px 12px; }
    .tip-text { font-size: 0.75rem; }
}

/* ---- FilePond 移动端优化 ---- */
@media (max-width: 576px) {
    .filepond--item { width: calc(50% - 0.5em); }
    .filepond--drop-label { font-size: 12px; }
}