:root {
    --black: #121212;
    --text: #121212;
    --muted: #666;
    --page: #f4f4f4;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body { color: var(--text); background: var(--page); font-family: Inter, "PingFang SC", "Microsoft YaHei", Arial, sans-serif; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { cursor: pointer; }
[hidden] { display: none !important; }
.page { display: none; min-height: 100vh; }
.page.active { display: block; }
.mobile-shell { width: min(100%, 760px); margin: 0 auto; padding-bottom: 26px; }
.top-nav, .page-header { padding: 8px 0; background: #fff; box-shadow: 0 2px 10px rgba(0,0,0,.08), inset 0 1px 0 rgba(255,255,255,.9); }
.nav-container, .page-header-container { display: flex; align-items: center; justify-content: space-between; padding: 0 15px; }
.nav-logo-container { display: flex; align-items: center; gap: 10px; min-width: 0; }
.nav-logo { display: grid; place-items: center; width: 40px; height: 40px; overflow: hidden; border: 2px solid rgba(255,255,255,.8); border-radius: 12px; color: #fff; background: linear-gradient(135deg,#121212,#555); box-shadow: 3px 3px 6px rgba(0,0,0,.1), -3px -3px 6px rgba(255,255,255,.8); font-weight: 900; }
.nav-logo img { width: 100%; height: 100%; object-fit: cover; }
.nav-title { margin: 0 0 2px; color: var(--black); font-size: 18px; line-height: 1.1; white-space: nowrap; }
.nav-subtitle { margin: 0; color: var(--black); opacity: .8; font-size: 12px; line-height: 1.1; white-space: nowrap; }
.nav-actions { display: flex; align-items: center; gap: 8px; }
.icon-svg { width: 14px; height: 14px; flex: 0 0 auto; fill: currentColor; }
.nav-action-button, .dark-button { border: 0; border-radius: 10px; color: #fff; background: linear-gradient(145deg,#121212,#333); box-shadow: 3px 3px 6px rgba(0,0,0,.2), -2px -2px 4px rgba(255,255,255,.1); transition: .25s ease; }
.nav-action-button { display: inline-flex; min-width: 0; height: auto; flex-direction: row; align-items: center; justify-content: center; gap: 5px; padding: 8px 13px; font-size: 13px; font-weight: 600; white-space: nowrap; }
.nav-action-button .icon-svg { width: 14px; height: 14px; }
.nav-action-button:hover, .dark-button:hover { transform: translateY(-2px); }
.banner-frame { position: relative; margin: 10px 12px; overflow: hidden; border: 2px solid rgba(255,255,255,.8); border-radius: 16px; box-shadow: 6px 6px 12px rgba(0,0,0,.1), -6px -6px 12px rgba(255,255,255,.7); }
.carousel-track { position: relative; min-height: 190px; }
.carousel-slide { position: absolute; inset: 0; display: block; opacity: 0; pointer-events: none; transition: opacity .35s ease; }
.carousel-slide.active { position: relative; opacity: 1; pointer-events: auto; }
.banner-image { display: block; width: 100%; max-height: 230px; object-fit: cover; }
.carousel-caption { position: absolute; right: 14px; bottom: 14px; padding: 7px 10px; border-radius: 8px; color: #fff; background: rgba(18,18,18,.68); font-size: 12px; }
.carousel-arrow { position: absolute; top: 50%; z-index: 2; display: grid; place-items: center; width: 34px; height: 34px; transform: translateY(-50%); border: 0; border-radius: 50%; color: #fff; background: rgba(18,18,18,.65); font-size: 25px; line-height: 1; }
.carousel-arrow.prev { left: 12px; }
.carousel-arrow.next { right: 12px; }
.carousel-dots { position: absolute; right: 0; bottom: 10px; left: 0; z-index: 2; display: flex; justify-content: center; gap: 6px; }
.carousel-dots button { width: 7px; height: 7px; padding: 0; border: 0; border-radius: 999px; background: rgba(255,255,255,.58); transition: .2s ease; }
.carousel-dots button.active { width: 20px; background: #fff; }
.banner-placeholder { display: flex; min-height: 190px; flex-direction: column; justify-content: center; gap: 10px; padding: 30px; color: #fff; background: radial-gradient(circle at 80% 20%,#666,transparent 35%), linear-gradient(135deg,#171717,#484848); }
.banner-kicker { font-size: 11px; letter-spacing: .16em; opacity: .65; }
.banner-placeholder strong { font-size: clamp(28px,7vw,48px); line-height: 1.1; }
.banner-placeholder small { color: #dedede; font-size: 14px; }
.dual-btn-section { display: flex; gap: 8px; align-items: stretch; margin: 8px 12px; }
.dual-btn { display: flex; flex: 1; align-items: center; justify-content: center; min-height: 58px; padding: 16px 4px; border: 1px solid rgba(255,255,255,.15); border-radius: 14px; background: var(--black); box-shadow: 0 8px 16px rgba(0,0,0,.4), inset 0 1px 0 rgba(255,255,255,.1); text-align: center; transition: .25s ease; }
.dual-btn span { display: inline-block; color: transparent; font-size: 18px; font-weight: 900; background-image: linear-gradient(90deg,#ffb6c1,#ffdab9,#fffacd,#e6e6fa,#b0e0e6,#98fb98,#ffc0cb); background-size: 700% 100%; background-clip: text; -webkit-background-clip: text; animation: textGradient 12s linear infinite; }
.dual-btn:hover { transform: translateY(-4px); background: #1a1a1a; }
@keyframes textGradient { 0% { background-position: 0 50%; } 50% { background-position: 100% 50%; } 100% { background-position: 0 50%; } }
.announcement-bar { display: flex; align-items: center; gap: 12px; margin: 8px 12px; padding: 12px 15px; overflow: hidden; border-radius: 12px; color: #fff; background: linear-gradient(145deg,#121212,#333); box-shadow: 6px 6px 12px rgba(0,0,0,.2), -2px -2px 6px rgba(255,255,255,.05); cursor: pointer; }
.announcement-icon { flex: 0 0 auto; color: #fff; font-size: 18px; transform: rotate(180deg); }
.announcement-container { flex: 1; height: 24px; overflow: hidden; white-space: nowrap; }
.announcement-marquee { width: max-content; min-width: 100%; color: #fff; font-size: 15px; font-weight: 500; line-height: 24px; animation: marquee 18s linear infinite; }
@keyframes marquee { from { transform: translateX(100%); } to { transform: translateX(-100%); } }
.tabs-section { margin: 0 12px 8px; }
.tab-buttons-container { display: flex; gap: 8px; padding: 12px; border-radius: 14px; background: linear-gradient(145deg,#f8f9fa,#fff); box-shadow: 4px 4px 8px rgba(0,0,0,.05), -4px -4px 8px rgba(255,255,255,.8); }
.tab-button { flex: 1; padding: 10px 16px; border: 0; border-radius: 12px; color: #666; background: linear-gradient(145deg,#fff,#f5f5f5); box-shadow: 4px 4px 8px rgba(0,0,0,.08), -4px -4px 8px rgba(255,255,255,.8); font-size: 14px; font-weight: 500; transition: .25s ease; }
.tab-button:hover { transform: translateY(-2px); }
.tab-button.active { color: #fff; background: linear-gradient(145deg,#121212,#333); box-shadow: 6px 6px 12px rgba(18,18,18,.15), -2px -2px 6px rgba(255,255,255,.1); font-weight: 600; transform: translateY(-2px); }
.tab-content { display: none; }
.tab-content.active { display: block; }
.tab-content-container { margin: 0 12px 10px; }
.card-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 8px; }
.category-card { position: relative; min-height: 0; padding: 12px; overflow: hidden; border: 0; border-radius: 14px; background: linear-gradient(145deg,#fff,#f5f5f5); box-shadow: 4px 4px 8px rgba(0,0,0,.08), -4px -4px 8px rgba(255,255,255,.7), inset 1px 1px 0 rgba(255,255,255,.8), inset -1px -1px 0 rgba(0,0,0,.05); transition: .3s cubic-bezier(.25,.8,.25,1); }
.category-card:hover { transform: translateY(-3px) scale(1.02); box-shadow: 8px 8px 16px rgba(0,0,0,.12), -8px -8px 16px rgba(255,255,255,.8); }
.category-card-row { display: flex; align-items: flex-start; width: 100%; }
.category-card-img { display: grid; place-items: center; flex: 0 0 65px; width: 65px; height: 65px; margin-right: 12px; overflow: hidden; border: 1px solid rgba(255,255,255,.8); border-radius: 12px; color: #fff; background: linear-gradient(135deg,#333,#999); box-shadow: 3px 3px 6px rgba(0,0,0,.08), -3px -3px 6px rgba(255,255,255,.8); font-size: 24px; font-weight: 800; }
.category-card-img img { width: 100%; height: 100%; object-fit: contain; }
.category-card-content { display: flex; flex: 1; min-width: 0; min-height: 65px; flex-direction: column; justify-content: space-between; gap: 4px; overflow: hidden; }
.category-card-title { overflow: hidden; color: #121212; font-size: 15px; font-weight: 700; line-height: 1.2; text-overflow: ellipsis; white-space: nowrap; }
.category-card-desc { overflow: hidden; color: #666; font-size: 12px; line-height: 1.5; word-break: break-word; }
.category-card-footer { display: flex; justify-content: flex-end; margin-top: 6px; }
.download-btn { display: inline-flex; align-items: center; justify-content: center; min-width: 70px; height: 26px; padding: 6px 12px; border-radius: 8px; color: #fff; background: linear-gradient(145deg,#333,#121212); box-shadow: 2px 2px 4px rgba(0,0,0,.2), -1px -1px 3px rgba(255,255,255,.1); font-size: 11px; font-weight: 600; animation: bounce 1s infinite; }
@keyframes bounce { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-3px); } }
.empty-state { padding: 28px; color: #777; text-align: center; }
.share-popup, .announcement-popup { position: fixed; inset: 0; z-index: 10; display: flex; align-items: center; justify-content: center; padding: 20px; background: rgba(18,18,18,.45); }
.share-container, .announcement-modal { width: min(460px,100%); border-radius: 16px; background: #fff; box-shadow: 0 20px 70px rgba(0,0,0,.22); }
.popup-head { display: flex; align-items: center; justify-content: space-between; padding: 20px; border-bottom: 1px solid #f0f0f0; }
.popup-head h3, .announcement-modal h3 { margin: 0; font-size: 18px; }
.popup-body, .announcement-modal { padding: 20px; }
.announcement-modal { position: relative; }
.announcement-modal h3 { margin: 10px 0; }
.announcement-modal p { margin: 0 0 20px; color: #666; line-height: 1.7; }
.modal-mark { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 10px; color: #fff; background: #121212; font-weight: 900; }
.icon-close { border: 0; color: #777; background: transparent; font-size: 25px; line-height: 1; }
.popup-label { margin: 0 0 8px; color: #6b7280; font-size: 13px; }
.share-label { margin-top: 20px; }
.copy-row { display: flex; gap: 8px; }
.copy-row input { flex: 1; min-width: 0; padding: 10px; border: 1px solid #e4e4e4; border-radius: 8px 0 0 8px; color: #555; background: #fafafa; }
.copy-row .dark-button { display: inline-flex; align-items: center; gap: 5px; padding: 0 15px; border-radius: 0 8px 8px 0; font-size: 14px; white-space: nowrap; }
.share-actions { display: grid; grid-template-columns: repeat(4,1fr); gap: 8px; }
.share-actions button { display: flex; flex-direction: column; align-items: center; gap: 7px; padding: 5px 3px 0; border: 0; color: #333; background: transparent; font-size: 12px; }
.share-actions button:hover { color: #121212; }
.share-icon { display: grid; place-items: center; width: 48px; height: 48px; padding: 13px; border-radius: 50%; fill: #121212; background: #f1f3f6; }
.qq-icon { display: grid; place-items: center; padding: 0; color: #121212; background: #f1f3f6; font-size: 20px; font-weight: 900; }
.more-icon { padding: 14px; }
.share-notification { position: fixed; left: 50%; bottom: 26px; z-index: 30; display: none; transform: translateX(-50%); padding: 10px 16px; border-radius: 9px; color: #fff; background: #121212; font-size: 13px; }
.page-header-container { min-height: 40px; }
.page-header-title { margin: 0; color: #121212; font-size: 20px; font-weight: 700; }
.back-button { border: 0; color: #121212; background: transparent; font-weight: 700; }
.header-spacer { width: 70px; }
.service-shell { padding: 20px 12px; }
.contact-card { position: relative; margin-bottom: 20px; padding: 20px; overflow: hidden; border-radius: 18px; background: linear-gradient(145deg,#fff,#f5f5f5); box-shadow: 8px 8px 16px rgba(0,0,0,.1), -8px -8px 16px rgba(255,255,255,.7); }
.contact-card::before { content: ""; position: absolute; inset: 0 0 auto; height: 4px; border-radius: 18px 18px 0 0; background: linear-gradient(90deg,#121212,#333); }
.contact-header { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.contact-icon { display: grid; place-items: center; width: 60px; height: 60px; border: 1px solid rgba(255,255,255,.8); border-radius: 14px; background: linear-gradient(145deg,#fff,#f0f0f0); box-shadow: 4px 4px 8px rgba(0,0,0,.1), -4px -4px 8px rgba(255,255,255,.8); font-size: 25px; }
.contact-icon img { width: 42px; height: 42px; object-fit: contain; }
.contact-icon span { color: #121212; }
.contact-header h3 { margin: 0 0 4px; font-size: 20px; }
.contact-header p { margin: 0; color: #666; font-size: 14px; }
.contact-copy-area { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 20px; padding: 16px; border: 1px solid rgba(255,255,255,.8); border-radius: 12px; background: linear-gradient(145deg,#fafafa,#f0f0f0); box-shadow: inset 2px 2px 5px rgba(0,0,0,.05), inset -2px -2px 5px rgba(255,255,255,.8); }
.contact-copy-area strong, .contact-copy-area span { display: block; }
.contact-copy-area strong { margin-bottom: 5px; font-size: 13px; }
.contact-copy-area span { font-size: 15px; font-weight: 600; }
.contact-copy-btn { display: inline-flex; align-items: center; gap: 5px; padding: 10px 20px; border: 0; border-radius: 10px; color: #fff; background: linear-gradient(145deg,#333,#121212); font-size: 14px; font-weight: 600; }
.contact-copy-btn .icon-svg { width: 15px; height: 15px; }
.contact-actions { display: grid; grid-template-columns: repeat(2,1fr); gap: 12px; }
.contact-action-btn { display: flex; align-items: center; justify-content: center; padding: 12px 16px; border-radius: 10px; font-size: 14px; font-weight: 600; }
.light-button { border: 1px solid rgba(18,18,18,.2); color: #121212; background: linear-gradient(145deg,#fff,#f5f5f5); }
.target-notice-modal { width: min(450px, calc(100vw - 34px)); min-height: 470px; padding: 0 17px 14px; overflow: hidden; border-radius: 15px; background: #fff; box-shadow: 0 24px 70px rgba(0,0,0,.28); }
.target-notice-modal .icon-close { position: absolute; top: 8px; right: 12px; z-index: 2; width: 28px; height: 28px; color: #707070; font-size: 25px; }
.notice-accent { width: 180px; height: 4px; margin: 0 auto; background: #e9482f; }
.notice-logo { display: grid; place-items: center; width: 72px; height: 72px; margin: 25px auto 14px; overflow: hidden; border-radius: 12px; background: #fff; }
.notice-logo img { width: 100%; height: 100%; object-fit: contain; }
.notice-logo span { display: grid; place-items: center; width: 58px; height: 58px; border-radius: 13px; color: #fff; background: linear-gradient(145deg,#333,#121212); font-size: 25px; font-weight: 900; }
.notice-content { padding: 0 4px; color: #111; font-size: 14px; line-height: 1.78; }
.notice-greeting { display: block; margin-bottom: 10px; font-size: 15px; }
.notice-body { font-weight: 600; word-break: break-word; }
.notice-meta { display: flex; flex-direction: column; align-items: flex-end; gap: 4px; margin: 32px 4px 14px; color: #333; font-size: 14px; font-weight: 700; }
.notice-meta time { font-size: 13px; }
.notice-confirm { width: 100%; height: 48px; border: 0; border-radius: 4px; color: #fff; background: linear-gradient(145deg,#333,#151515); font-size: 16px; box-shadow: 0 2px 2px rgba(0,0,0,.15); }
.notice-footer { padding-top: 12px; color: #7d8794; text-align: center; font-size: 12px; }
@media (max-width: 380px) {
    .nav-logo { width: 36px; height: 36px; border-radius: 10px; }
    .nav-title { font-size: 16px; }
    .nav-subtitle { font-size: 11px; }
    .nav-action-button { padding: 6px 12px; font-size: 12px; border-radius: 8px; }
    .card-grid { gap: 6px; }
    .category-card { padding: 8px 10px; border-radius: 12px; }
    .category-card-img { flex-basis: 55px; width: 55px; height: 55px; margin-right: 8px; border-radius: 10px; }
    .category-card-content { min-height: 55px; }
    .category-card-title { font-size: 13px; }
    .category-card-desc { font-size: 11px; line-height: 1.4; }
    .download-btn { min-width: 65px; height: 24px; padding: 5px 8px; font-size: 10px; }
    .tab-button { padding: 8px 12px; font-size: 13px; border-radius: 10px; }
    .tab-buttons-container { gap: 6px; padding: 10px; border-radius: 12px; }
    .announcement-bar { margin: 8px 10px; padding: 10px 12px; border-radius: 10px; }
    .announcement-marquee { font-size: 13px; line-height: 20px; }
    .announcement-container { height: 20px; }
    .dual-btn { min-height: 52px; padding: 14px 4px; }
    .dual-btn span { font-size: 16px; }
    .target-notice-modal { min-height: 0; padding-right: 14px; padding-left: 14px; }
    .notice-logo { margin-top: 25px; }
    .notice-content { font-size: 13px; line-height: 1.7; }
    .notice-meta { margin-top: 24px; }
}