@charset "UTF-8";
/* ======================================== 服务与支持入口页面样式 ======================================== */
/* ---------- 基础重置与变量 ---------- */
:root { /* 品牌色彩 */ --primary-50: #eff6ff; --primary-100: #dbeafe; --primary-200: #bfdbfe; --primary-300: #93c5fd; --primary-400: #60a5fa; --primary-500: #3b82f6; --primary-600: #002fa7; --primary-700: #1d4ed8; --primary-800: #1e40af; /* 中性色 */ --neutral-0: #ffffff; --neutral-50: #f8fafc; --neutral-100: #f1f5f9; --neutral-200: #e2e8f0; --neutral-300: #cbd5e1; --neutral-400: #94a3b8; --neutral-500: #64748b; --neutral-600: #475569; --neutral-700: #334155; --neutral-800: #1e293b; --neutral-900: #0f172a; /* 间距系统 (8pt grid) */ --space-1: 4px; --space-2: 8px; --space-3: 12px; --space-4: 16px; --space-5: 20px; --space-6: 24px; --space-8: 32px; --space-10: 40px; --space-12: 48px; --space-16: 64px; --space-24: 96px; /* 字体 */ --font-display: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif; --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif; /* 字号 */ --text-xs: 12px; --text-sm: 14px; --text-base: 16px; --text-lg: 18px; --text-xl: 20px; --text-2xl: 24px; --text-3xl: 30px; --text-4xl: 36px; /* 圆角 */ --radius-sm: 8px; --radius-md: 12px; --radius-lg: 16px; --radius-xl: 20px; --radius-full: 9999px; /* 阴影 */ --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.04); --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.06), 0 2px 4px -2px rgba(15, 23, 42, 0.04); --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04); --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.04); --shadow-card: 0 2px 8px rgba(30, 58, 138, 0.06), 0 8px 24px rgba(30, 58, 138, 0.08); --shadow-card-hover: 0 8px 16px rgba(30, 58, 138, 0.1), 0 20px 40px rgba(30, 58, 138, 0.12); /* 动效 */ --ease-standard: cubic-bezier(0.2, 0, 0, 1); --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1); --duration-fast: 150ms; --duration-normal: 250ms; --duration-slow: 350ms; }

body { font-family: var(--font-body); font-size: var(--text-base); line-height: 1.6; color: var(--neutral-700); background-color: var(--neutral-0); }

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

img, svg { display: block; max-width: 100%; }

.service { padding: 68px 0 90px 0; }

/* ---------- 入口卡片网格 ---------- */
.support-section { padding-top: 48px; }

.support-grid { display: grid; grid-template-columns: repeat(2, 1fr); grid-template-rows: repeat(2, 1fr); gap: var(--space-3); padding-bottom: var(--space-12); }

.support-card { position: relative; display: flex; flex-direction: column; justify-content: space-between; padding: var(--space-6); border-radius: var(--radius-xl); background: var(--neutral-0); border: 1px solid var(--neutral-200); box-shadow: var(--shadow-card); overflow: hidden; transition: transform var(--duration-normal) var(--ease-spring), box-shadow var(--duration-normal) var(--ease-standard), border-color var(--duration-fast) var(--ease-standard); cursor: pointer; }

.support-card::before { content: ""; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(59, 130, 246, 0.03) 0%, rgba(37, 99, 235, 0.06) 100%); opacity: 0; transition: opacity var(--duration-normal) var(--ease-standard); pointer-events: none; }

.support-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); border-color: var(--primary-200); }

.support-card:hover::before { opacity: 1; }

.support-card:active { transform: translateY(-1px) scale(0.995); }

/* 资料中心 - 左侧大卡片跨两行 */
.support-card--materials { grid-row: span 2; background: linear-gradient(160deg, var(--primary-700) 0%, var(--primary-800) 100%); border: none; color: var(--neutral-0); }

.support-card--materials::before { background: linear-gradient(135deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0) 60%); }

.support-card--materials:hover { border-color: transparent; box-shadow: 0 24px 48px rgba(30, 64, 175, 0.25), 0 12px 24px rgba(30, 64, 175, 0.2); }

.support-card--materials .support-card__title { color: var(--neutral-0); }

.support-card--materials .support-card__desc { color: rgba(255, 255, 255, 0.8); }

.support-card--materials .support-card__link { color: var(--neutral-0); background: rgba(255, 255, 255, 0.12); border-color: rgba(255, 255, 255, 0.2); }

.support-card--materials .support-card__link:hover { background: rgba(255, 255, 255, 0.2); }

.support-card--materials .support-card__icon { background: rgba(255, 255, 255, 0.12); color: var(--neutral-0); }

/* 视频中心 */
.support-card--video { background: linear-gradient(135deg, var(--primary-50) 0%, var(--neutral-0) 60%); border-color: var(--primary-100); }

/* 常见问题 */
.support-card--faq { background: linear-gradient(135deg, var(--neutral-50) 0%, var(--neutral-0) 60%); }

/* 卡片顶部内容 */
.support-card__top { position: relative; z-index: 1; }

.support-card__icon { display: inline-flex; align-items: center; justify-content: center; width: 56px; height: 56px; border-radius: var(--radius-md); background: var(--primary-50); color: var(--primary-600); margin-bottom: var(--space-4); transition: transform var(--duration-normal) var(--ease-spring), background var(--duration-fast) var(--ease-standard); }

.support-card:hover .support-card__icon { transform: scale(1.08) rotate(-2deg); }

.support-card__icon svg { width: 28px; height: 28px; stroke-width: 1.75; }

.support-card__title { font-family: var(--font-display); font-size: clamp(var(--text-xl), 2.5vw, var(--text-2xl)); font-weight: 700; color: var(--neutral-900); margin-bottom: var(--space-2); line-height: 1.3; }

.support-card__desc { font-size: var(--text-base); color: var(--neutral-500); line-height: 1.75; max-width: 480px; }

/* 卡片底部链接 */
.support-card__footer { position: relative; z-index: 1; margin-top: var(--space-4); display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); flex-wrap: wrap; }

.support-card__link { display: inline-flex; align-items: center; gap: var(--space-2); padding: var(--space-3) var(--space-5); border-radius: var(--radius-full); font-size: var(--text-sm); font-weight: 600; color: var(--primary-700); background: var(--primary-50); border: 1px solid var(--primary-100); transition: all var(--duration-fast) var(--ease-standard); }

.support-card__link:hover { background: var(--primary-100); gap: var(--space-3); }

.support-card__link svg { width: 16px; height: 16px; stroke-width: 2; transition: transform var(--duration-fast) var(--ease-standard); }

.support-card__link:hover svg { transform: translateX(3px); }

.support-card__meta { font-size: var(--text-sm); color: var(--neutral-400); }

.support-card--materials .support-card__meta { color: rgba(255, 255, 255, 0.6); }

/* 装饰元素 */
.support-card__decoration { position: absolute; right: -20px; bottom: -20px; width: 160px; height: 160px; opacity: 0.08; pointer-events: none; transition: opacity var(--duration-normal) var(--ease-standard), transform var(--duration-normal) var(--ease-standard); }

.support-card:hover .support-card__decoration { opacity: 0.12; transform: scale(1.1) rotate(5deg); }

.support-card--materials .support-card__decoration { opacity: 0.15; color: var(--neutral-0); }

.support-card--materials:hover .support-card__decoration { opacity: 0.25; }

.support-card__decoration svg { width: 100%; height: 100%; }

/* ---------- 响应式适配 ---------- */
@media (max-width: 1024px) { .support-grid { grid-template-columns: 1fr; grid-template-rows: auto; gap: var(--space-5); }
  .support-card--materials { grid-row: auto; }
  .support-card { padding: var(--space-5); } }

@media (max-width: 640px) { .support-card { padding: var(--space-4); }
  .support-card__icon { width: 48px; height: 48px; margin-bottom: var(--space-3); }
  .support-card__icon svg { width: 24px; height: 24px; }
  .support-card__footer { flex-direction: column; align-items: flex-start; gap: var(--space-3); } }

/* ---------- 无障碍焦点环 ---------- */
.support-card:focus-visible { outline: 3px solid var(--primary-400); outline-offset: 3px; }

/* ---------- 页面加载动画 ---------- */
@keyframes fadeInUp { from { opacity: 0;
    transform: translateY(24px); }
  to { opacity: 1;
    transform: translateY(0); } }

.page-header, .support-card { animation: fadeInUp 600ms var(--ease-standard) both; }

.support-card:nth-child(1) { animation-delay: 100ms; }

.support-card:nth-child(2) { animation-delay: 200ms; }

.support-card:nth-child(3) { animation-delay: 300ms; }

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; } }

/* ---------- 视频列表网格 ---------- */
.video-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-3); padding: var(--space-8) 0; }

.video-item { position: relative; border-radius: var(--radius-sm); background: var(--neutral-0); border: 1px solid var(--neutral-200); box-shadow: var(--shadow-sm); overflow: hidden; transition: transform var(--duration-normal) var(--ease-spring), box-shadow var(--duration-normal) var(--ease-standard), border-color var(--duration-fast) var(--ease-standard); cursor: pointer; }

.video-item:hover { transform: translateY(-3px); }

.video-item:active { transform: translateY(-1px) scale(0.995); }

.video-item__thumb { position: relative; width: 100%; aspect-ratio: 3 / 2; overflow: hidden; background: var(--neutral-100); }

.video-item__thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--duration-slow) var(--ease-standard); }

.video-item:hover .video-item__thumb img { transform: scale(1.05); }

.video-item__play { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 50px; height: 50px; border-radius: 50%; background: rgba(255, 255, 255, 0.5); display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15); transition: transform var(--duration-normal) var(--ease-spring), background var(--duration-fast) var(--ease-standard); }

.video-item:hover .video-item__play { transform: translate(-50%, -50%) scale(1.1); background: var(--neutral-0); }

.video-item__play svg { width: 28px; height: 28px; fill: #3a3f43; }

.video-item__info { padding: var(--space-4) var(--space-5); }

.video-item__title { text-align: center; font-family: var(--font-display); font-size: var(--text-base); font-weight: 600; color: var(--neutral-800); line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }

/* 视频列表响应式 */
@media (max-width: 1024px) { .video-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-5); } }

@media (max-width: 640px) { .video-grid { grid-template-columns: 1fr; gap: var(--space-4); }
  .video-item__play { width: 52px; height: 52px; }
  .video-item__play svg { width: 22px; height: 22px; }
  .video-item__info { padding: var(--space-3) var(--space-4); } }

/* 更新无障碍焦点环 */
.support-card:focus-visible, .video-item:focus-visible { outline: 3px solid var(--primary-400); outline-offset: 3px; }

/* ---------- 资料列表网格 ---------- */
.material-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-4); }

.material-item { display: flex; align-items: center; padding: var(--space-5) var(--space-6); border-radius: var(--radius-lg); background: var(--neutral-0); border: 1px solid var(--neutral-200); box-shadow: var(--shadow-md); transition: transform var(--duration-normal) var(--ease-spring), box-shadow var(--duration-normal) var(--ease-standard), border-color var(--duration-fast) var(--ease-standard); }

.material-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: var(--primary-200); }

.material-item__icon { flex-shrink: 0; width: 48px; height: 48px; border-radius: var(--radius-md); background: var(--primary-50); display: flex; align-items: center; justify-content: center; margin-right: var(--space-4); transition: transform var(--duration-normal) var(--ease-spring); }

.material-item:hover .material-item__icon { transform: scale(1.05); }

.material-item__icon svg { width: 24px; height: 24px; }

.material-item__content { flex: 1; min-width: 0; margin-right: var(--space-4); }

.material-item__title { font-family: var(--font-display); font-size: var(--text-base); font-weight: 600; color: var(--neutral-800); line-height: 1.5; margin-bottom: var(--space-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.material-item__tag { display: inline-block; padding: 4px var(--space-3); border-radius: var(--radius-full); font-size: var(--text-xs); color: var(--primary-600); background: var(--primary-50); }

.material-item__actions { flex-shrink: 0; display: flex; align-items: center; gap: var(--space-3); }

.material-item__btn { display: inline-flex; align-items: center; gap: var(--space-1); padding: var(--space-2) var(--space-4); border-radius: var(--radius-sm); font-size: var(--text-sm); font-weight: 500; cursor: pointer; transition: all var(--duration-fast) var(--ease-standard); text-decoration: none; border: none; white-space: nowrap; }

.material-item__btn svg { width: 14px; height: 14px; }

.material-item__btn--preview { color: var(--neutral-600); background: var(--neutral-50); border: 1px solid var(--neutral-200); }

.material-item__btn--preview:hover { color: var(--primary-600); background: var(--primary-50); border-color: var(--primary-200); }

.material-item__btn--download { color: var(--neutral-0); background: var(--primary-600); }

.material-item__btn--download:hover { background: var(--primary-700); }

/* 资料列表响应式 */
@media (max-width: 768px) { .material-grid { grid-template-columns: 1fr; gap: var(--space-4); margin-top: var(--space-5); }
  .material-item { padding: var(--space-4); flex-wrap: wrap; }
  .material-item__content { margin-right: 0; margin-bottom: var(--space-3); width: calc(100% - 48px - var(--space-4)); }
  .material-item__actions { flex-direction: column; justify-content: flex-end; }
  .material-item__title { font-size: var(--text-sm); } }

@media (max-width: 480px) { .material-item__icon { width: 40px; height: 40px; }
  .material-item__icon svg { width: 20px; height: 20px; }
  .material-item__btn { padding: var(--space-1) var(--space-3); font-size: var(--text-xs); } }

/* ---------- FAQ手风琴列表 ---------- */
.faq-item { margin-bottom: var(--space-4); border-radius: var(--radius-lg); background: var(--neutral-0); border: 1px solid var(--neutral-200); box-shadow: var(--shadow-sm); overflow: hidden; transition: border-color var(--duration-fast) var(--ease-standard), box-shadow var(--duration-normal) var(--ease-standard); }

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

.faq-item.active { background-color: #f8fbff; border-color: var(--primary-200); box-shadow: var(--shadow-card); }

.faq-item__header { display: flex; align-items: center; justify-content: space-between; padding: var(--space-4) var(--space-6); cursor: pointer; transition: background var(--duration-fast) var(--ease-standard); }

.faq-item__header:hover { background: var(--neutral-50); }

.faq-item__question { font-family: var(--font-display); font-size: var(--text-base); font-weight: 600; color: var(--neutral-800); line-height: 1.5; margin: 0; flex: 1; padding-right: var(--space-4); }

.faq-item__toggle { flex-shrink: 0; width: 22px; height: 22px; border-radius: 50%; border: 1px solid var(--neutral-300); background: var(--neutral-0); display: flex; align-items: center; justify-content: center; cursor: pointer; transition: all var(--duration-fast) var(--ease-standard); padding: 0; }

.faq-item__toggle:hover { border-color: var(--primary-400); background: var(--primary-50); }

.faq-item.active .faq-item__toggle { border-color: var(--primary-600); color: var(--neutral-0); }

.faq-item__toggle svg { width: 16px; height: 16px; stroke: var(--neutral-500); transition: stroke var(--duration-fast) var(--ease-standard); }

.faq-item__toggle:hover svg { stroke: var(--primary-600); }

.faq-item.active .faq-item__toggle svg { stroke: var(--primary-600); }

.faq-item__toggle .icon-minus { display: none; }

.faq-item.active .faq-item__toggle .icon-plus { display: none; }

.faq-item.active .faq-item__toggle .icon-minus { display: block; }

.faq-item__content { display: none; padding: 0 var(--space-6) var(--space-5); }

.faq-item__content p { font-size: var(--text-sm); color: var(--neutral-600); line-height: 1.8; margin: 0; }

/* FAQ响应式 */
@media (max-width: 768px) { .faq-item__header { padding: var(--space-4); }
  .faq-item__question { font-size: var(--text-sm); }
  .faq-item__content { padding: 0 var(--space-4) var(--space-4); }
  .faq-item__toggle { width: 28px; height: 28px; }
  .faq-item__toggle svg { width: 14px; height: 14px; } }

.pup-video .pup { height: 70%; }

.pup-video .p-video { width: 100%; height: 100%; }

.pup-video .p-video .video { width: inherit; height: inherit; }

@media (max-width: 768px) { .pup-video .pup { height: 40%; } }