/* ============================================================
   票房观察 - 证券交易所数据风 主样式表
   CSS Prefix: pf-
   ============================================================ */

/* === Reset & Base === */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --pf-bg: #141414;
    --pf-bg-card: #1a1a2e;
    --pf-bg-card2: #16213e;
    --pf-red: #FF0000;
    --pf-green: #00FF00;
    --pf-orange: #FFA500;
    --pf-gray: #E0E0E0;
    --pf-gray2: #999;
    --pf-blue: #4A90E2;
    --pf-border: #333;
    --pf-font-title: 'Heiti SC', 'WenQuanYi Micro Hei', 'Helvetica Neue', sans-serif;
    --pf-font-data: 'Roboto Mono', 'Courier New', monospace;
    --pf-font-body: 'WenQuanYi Micro Hei', 'Helvetica Neue', 'PingFang SC', sans-serif;
    --pf-radius: 4px;
    --pf-shadow: 0 2px 12px rgba(0,0,0,0.5);
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
    background: var(--pf-bg);
    color: var(--pf-gray);
    font-family: var(--pf-font-body);
    line-height: 1.7;
    min-height: 100vh;
}

a { color: var(--pf-blue); text-decoration: none; transition: color .2s; }
a:hover { color: var(--pf-orange); }

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

h1, h2, h3, h4 { font-family: var(--pf-font-title); font-weight: 700; }

.pf-data { font-family: var(--pf-font-data); }

/* === Jammer Block (hidden) === */
.box-jammer-block { display: none !important; }

/* === Ticker Bar === */
.pf-ticker-bar {
    background: #0a0a1a;
    border-bottom: 1px solid var(--pf-border);
    overflow: hidden;
    height: 36px;
    position: relative;
}
.pf-ticker-track {
    display: flex;
    gap: 3rem;
    animation: pf-scroll 40s linear infinite;
    white-space: nowrap;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
}
.pf-ticker-item {
    font-family: var(--pf-font-data);
    font-size: 0.85rem;
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-shrink: 0;
}
.pf-ticker-item .pf-up { color: var(--pf-green); }
.pf-ticker-item .pf-down { color: var(--pf-red); }
.pf-ticker-item .pf-name { color: var(--pf-gray2); }

@keyframes pf-scroll {
    0% { transform: translateY(-50%) translateX(0); }
    100% { transform: translateY(-50%) translateX(-50%); }
}

/* === Navigation === */
.pf-header {
    background: linear-gradient(180deg, #1a1a2e 0%, #141414 100%);
    border-bottom: 1px solid var(--pf-border);
    padding: 0 1.5rem;
}
.pf-nav-wrap {
    max-width: 1440px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}
.pf-logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
}
.pf-logo-icon {
    width: 36px;
    height: 36px;
    border-radius: 4px;
}
.sp-logo-text {
    font-family: var(--pf-font-title);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--pf-gray);
    letter-spacing: 1px;
}
.pf-nav-links {
    display: flex;
    gap: 0;
    list-style: none;
}
.pf-nav-links li a {
    display: block;
    padding: 0 1rem;
    line-height: 60px;
    font-size: 0.95rem;
    color: var(--pf-gray2);
    transition: color .2s, border-bottom .2s;
    border-bottom: 2px solid transparent;
    font-family: var(--pf-font-title);
}
.pf-nav-links li a:hover,
.pf-nav-links li a.pf-active {
    color: var(--pf-green);
    border-bottom-color: var(--pf-green);
}
.pf-nav-links li a.pf-nav-red:hover { color: var(--pf-red); border-bottom-color: var(--pf-red); }

/* Hamburger */
.pf-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}
.pf-hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--pf-gray);
    transition: transform .3s, opacity .3s;
}
.pf-hamburger.pf-open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.pf-hamburger.pf-open span:nth-child(2) { opacity: 0; }
.pf-hamburger.pf-open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Mobile nav overlay */
.pf-mobile-nav {
    display: none;
    position: fixed;
    top: 0;
    right: -280px;
    width: 280px;
    height: 100vh;
    background: #0a0a1a;
    border-left: 1px solid var(--pf-border);
    z-index: 1000;
    transition: right .3s ease;
    padding: 80px 1.5rem 2rem;
    overflow-y: auto;
}
.pf-mobile-nav.pf-show { right: 0; }
.pf-mobile-nav a {
    display: block;
    padding: 0.8rem 0;
    color: var(--pf-gray);
    font-size: 1rem;
    border-bottom: 1px solid var(--pf-border);
    font-family: var(--pf-font-title);
}
.pf-mobile-nav a:hover { color: var(--pf-green); }
.pf-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
    z-index: 999;
}
.pf-overlay.pf-show { display: block; }

/* === Container === */
.pf-container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* === Section Common === */
.pf-section {
    padding: 2.5rem 0;
    border-bottom: 1px solid #1f1f3a;
}
.pf-section-title {
    font-family: var(--pf-font-data);
    font-size: 0.85rem;
    color: var(--pf-orange);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    padding-left: 0.5rem;
    border-left: 3px solid var(--pf-orange);
}

/* === Hero / Market Index === */
.pf-market-index {
    background: linear-gradient(135deg, #0a0a1a 0%, #1a1a2e 50%, #0a0a1a 100%);
    padding: 2rem 0;
    position: relative;
    overflow: hidden;
}
.pf-index-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}
.pf-index-card {
    background: rgba(26,26,46,0.8);
    border: 1px solid var(--pf-border);
    border-radius: var(--pf-radius);
    padding: 1.5rem;
    text-align: center;
    transition: border-color .3s, transform .3s;
}
.pf-index-card:hover {
    border-color: var(--pf-green);
    transform: translateY(-2px);
}
.pf-index-label {
    font-size: 0.85rem;
    color: var(--pf-gray2);
    margin-bottom: 0.5rem;
    font-family: var(--pf-font-data);
    letter-spacing: 1px;
}
.pf-index-value {
    font-family: var(--pf-font-data);
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.2;
}
.pf-index-change {
    font-family: var(--pf-font-data);
    font-size: 1rem;
    margin-top: 0.3rem;
}
.pf-up-val { color: var(--pf-green); }
.pf-down-val { color: var(--pf-red); }

/* === K-Line Section === */
.pf-hot-films { padding: 2.5rem 0; }
.pf-kline-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}
.pf-kline-card {
    background: var(--pf-bg-card);
    border: 1px solid var(--pf-border);
    border-radius: var(--pf-radius);
    overflow: hidden;
    transition: border-color .3s;
}
.pf-kline-card:hover { border-color: var(--pf-orange); }
.pf-kline-card img {
    width: 100%;
    height: auto;
}
.pf-kline-info {
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.pf-kline-name { font-weight: 700; font-size: 0.95rem; }
.pf-kline-price { font-family: var(--pf-font-data); font-weight: 700; }

/* === Rankings === */
.pf-rankings { padding: 2.5rem 0; }
.pf-rank-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}
.pf-rank-panel {
    background: var(--pf-bg-card);
    border: 1px solid var(--pf-border);
    border-radius: var(--pf-radius);
    overflow: hidden;
}
.pf-rank-header {
    padding: 0.8rem 1rem;
    font-family: var(--pf-font-data);
    font-weight: 700;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--pf-border);
}
.pf-rank-header.pf-gainer { color: var(--pf-green); background: rgba(0,255,0,0.05); }
.pf-rank-header.pf-loser { color: var(--pf-red); background: rgba(255,0,0,0.05); }
.pf-rank-list { list-style: none; }
.pf-rank-list li {
    display: flex;
    justify-content: space-between;
    padding: 0.6rem 1rem;
    border-bottom: 1px solid rgba(51,51,51,0.5);
    font-size: 0.9rem;
    transition: background .2s;
}
.pf-rank-list li:hover { background: rgba(255,255,255,0.03); }
.pf-rank-list li:last-child { border-bottom: none; }
.pf-rank-num {
    display: inline-block;
    width: 22px;
    height: 22px;
    line-height: 22px;
    text-align: center;
    border-radius: 3px;
    font-size: 0.75rem;
    font-family: var(--pf-font-data);
    margin-right: 0.5rem;
}
.pf-rank-num.pf-top { background: var(--pf-orange); color: #000; }
.pf-rank-change { font-family: var(--pf-font-data); font-weight: 700; }

/* === IPO Center === */
.pf-ipo-center { padding: 2.5rem 0; }
.pf-ipo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}
.pf-ipo-card {
    background: var(--pf-bg-card);
    border: 1px solid var(--pf-border);
    border-radius: var(--pf-radius);
    overflow: hidden;
    transition: transform .3s, border-color .3s;
}
.pf-ipo-card:hover { transform: translateY(-3px); border-color: var(--pf-orange); }
.pf-ipo-card img { width: 100%; }
.pf-ipo-body { padding: 1rem; }
.pf-ipo-tag {
    display: inline-block;
    padding: 2px 8px;
    font-size: 0.75rem;
    font-family: var(--pf-font-data);
    border-radius: 2px;
    margin-bottom: 0.5rem;
}
.pf-ipo-tag.pf-hot { background: var(--pf-red); color: #fff; }
.pf-ipo-tag.pf-new { background: var(--pf-orange); color: #000; }
.pf-ipo-title { font-size: 1rem; font-weight: 700; margin-bottom: 0.3rem; }
.pf-ipo-meta { font-size: 0.8rem; color: var(--pf-gray2); font-family: var(--pf-font-data); }

/* === Research === */
.pf-research { padding: 2.5rem 0; }
.pf-research-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}
.pf-research-card {
    background: var(--pf-bg-card);
    border: 1px solid var(--pf-border);
    border-radius: var(--pf-radius);
    overflow: hidden;
    transition: transform .3s;
}
.pf-research-card:hover { transform: translateY(-3px); }
.pf-research-card img { width: 100%; }
.pf-research-body { padding: 1rem; }
.pf-research-badge {
    display: inline-block;
    padding: 2px 8px;
    font-size: 0.7rem;
    border-radius: 2px;
    margin-bottom: 0.5rem;
}
.pf-research-badge.pf-free { background: var(--pf-green); color: #000; }
.pf-research-badge.pf-paid { background: var(--pf-orange); color: #000; }
.pf-research-title { font-size: 0.95rem; font-weight: 700; margin-bottom: 0.3rem; }
.pf-research-author { font-size: 0.8rem; color: var(--pf-gray2); }

/* === Exchange Preview === */
.pf-exchange-preview {
    padding: 2.5rem 0;
    background: linear-gradient(135deg, #0a0a1a 0%, #1a1a2e 100%);
}
.pf-exchange-cta {
    text-align: center;
    padding: 3rem 1rem;
    border: 1px dashed var(--pf-orange);
    border-radius: var(--pf-radius);
    background: rgba(255,165,0,0.03);
}
.pf-exchange-cta h3 {
    font-size: 1.5rem;
    color: var(--pf-orange);
    margin-bottom: 1rem;
}
.pf-exchange-cta p {
    color: var(--pf-gray2);
    margin-bottom: 1.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* === Buttons === */
.pf-btn {
    display: inline-block;
    padding: 0.6rem 1.8rem;
    font-family: var(--pf-font-title);
    font-size: 0.9rem;
    font-weight: 700;
    border: none;
    border-radius: var(--pf-radius);
    cursor: pointer;
    transition: all .2s;
    text-decoration: none;
    letter-spacing: 1px;
}
.pf-btn-green {
    background: linear-gradient(180deg, #00cc00 0%, #009900 100%);
    color: #000;
    box-shadow: 0 2px 8px rgba(0,255,0,0.2);
}
.pf-btn-green:hover { background: linear-gradient(180deg, #00ff00 0%, #00cc00 100%); color: #000; }
.pf-btn-red {
    background: linear-gradient(180deg, #cc0000 0%, #990000 100%);
    color: #fff;
    box-shadow: 0 2px 8px rgba(255,0,0,0.2);
}
.pf-btn-red:hover { background: linear-gradient(180deg, #ff0000 0%, #cc0000 100%); }
.pf-btn-orange {
    background: linear-gradient(180deg, #ffa500 0%, #cc8400 100%);
    color: #000;
    box-shadow: 0 2px 8px rgba(255,165,0,0.2);
}
.pf-btn-orange:hover { background: linear-gradient(180deg, #ffb733 0%, #ffa500 100%); color: #000; }
.pf-btn-outline {
    background: transparent;
    border: 1px solid var(--pf-gray2);
    color: var(--pf-gray);
}
.pf-btn-outline:hover { border-color: var(--pf-green); color: var(--pf-green); }

/* === Data Terminal === */
.pf-data-terminal { padding: 2.5rem 0; }
.pf-terminal-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}
.pf-terminal-cell {
    background: var(--pf-bg-card);
    border: 1px solid var(--pf-border);
    border-radius: var(--pf-radius);
    padding: 1.2rem;
    text-align: center;
}
.pf-terminal-label {
    font-size: 0.75rem;
    color: var(--pf-gray2);
    font-family: var(--pf-font-data);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}
.pf-terminal-value {
    font-family: var(--pf-font-data);
    font-size: 1.5rem;
    font-weight: 700;
}

/* === Analyst Column === */
.pf-analyst { padding: 2.5rem 0; }
.pf-analyst-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}
.pf-analyst-card {
    background: var(--pf-bg-card);
    border: 1px solid var(--pf-border);
    border-radius: var(--pf-radius);
    padding: 1.5rem;
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    transition: border-color .3s;
}
.pf-analyst-card:hover { border-color: var(--pf-blue); }
.pf-analyst-avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    flex-shrink: 0;
    border: 2px solid var(--pf-border);
}
.pf-analyst-name { font-weight: 700; font-size: 0.95rem; margin-bottom: 0.3rem; }
.pf-analyst-role { font-size: 0.8rem; color: var(--pf-gray2); margin-bottom: 0.5rem; }
.pf-analyst-quote {
    font-size: 0.85rem;
    color: var(--pf-gray);
    line-height: 1.5;
    border-left: 2px solid var(--pf-blue);
    padding-left: 0.8rem;
}

/* === History Query === */
.pf-history { padding: 2.5rem 0; }
.pf-search-box {
    display: flex;
    gap: 0.5rem;
    max-width: 600px;
    margin: 0 auto 1.5rem;
}
.pf-input {
    flex: 1;
    background: var(--pf-bg-card);
    border: 1px solid var(--pf-border);
    border-radius: var(--pf-radius);
    padding: 0.7rem 1rem;
    color: var(--pf-gray);
    font-family: var(--pf-font-data);
    font-size: 0.9rem;
    outline: none;
    transition: border-color .2s;
}
.pf-input:focus { border-color: var(--pf-blue); }
.pf-input::placeholder { color: var(--pf-gray2); }

/* === News === */
.pf-news { padding: 2.5rem 0; }
.pf-news-list { list-style: none; }
.pf-news-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.7rem 0;
    border-bottom: 1px solid rgba(51,51,51,0.5);
    font-size: 0.9rem;
}
.pf-news-list li:last-child { border-bottom: none; }
.pf-news-time {
    font-family: var(--pf-font-data);
    color: var(--pf-gray2);
    font-size: 0.8rem;
    flex-shrink: 0;
    margin-left: 1rem;
}
.pf-news-tag {
    display: inline-block;
    padding: 1px 6px;
    font-size: 0.7rem;
    border-radius: 2px;
    margin-right: 0.5rem;
    font-family: var(--pf-font-data);
}
.pf-news-tag.pf-urgent { background: var(--pf-red); color: #fff; }
.pf-news-tag.pf-normal { background: var(--pf-blue); color: #fff; }

/* === Footer === */
.pf-footer {
    background: #0a0a1a;
    border-top: 1px solid var(--pf-border);
    padding: 2.5rem 0 1.5rem;
    font-size: 0.85rem;
}
.pf-footer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}
.pf-footer-title {
    font-size: 0.8rem;
    color: var(--pf-orange);
    font-family: var(--pf-font-data);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 1rem;
}
.pf-footer-data {
    font-family: var(--pf-font-data);
    line-height: 2;
    color: var(--pf-gray2);
}
.pf-footer-links { list-style: none; line-height: 2.2; }
.pf-footer-links a { color: var(--pf-gray2); }
.pf-footer-links a:hover { color: var(--pf-green); }
.pf-footer-warning {
    color: var(--pf-orange);
    line-height: 1.8;
    padding: 0.8rem;
    border: 1px solid rgba(255,165,0,0.2);
    border-radius: var(--pf-radius);
    background: rgba(255,165,0,0.03);
}
.pf-footer-bottom {
    border-top: 1px solid var(--pf-border);
    padding-top: 1.5rem;
    text-align: center;
    color: var(--pf-gray2);
    font-size: 0.8rem;
    line-height: 2;
}
.pf-footer-bottom a { color: var(--pf-gray2); }
.pf-footer-honor {
    display: inline-block;
    padding: 4px 12px;
    border: 1px solid var(--pf-orange);
    border-radius: 3px;
    color: var(--pf-orange);
    font-size: 0.75rem;
    margin: 0.5rem 0;
}

/* === Inner Page === */
.pf-page-hero {
    background: linear-gradient(135deg, #0a0a1a 0%, #1a1a2e 50%, #0a0a1a 100%);
    padding: 3rem 0;
    text-align: center;
    border-bottom: 1px solid var(--pf-border);
}
.pf-page-hero h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}
.pf-page-hero p {
    color: var(--pf-gray2);
    max-width: 700px;
    margin: 0 auto;
}
.pf-content-area {
    max-width: 960px;
    margin: 0 auto;
    padding: 2.5rem 1.5rem;
}
.pf-content-area h2 {
    font-size: 1.4rem;
    margin: 2rem 0 1rem;
    color: var(--pf-orange);
    border-left: 3px solid var(--pf-orange);
    padding-left: 0.8rem;
}
.pf-content-area h3 {
    font-size: 1.1rem;
    margin: 1.5rem 0 0.8rem;
    color: var(--pf-green);
}
.pf-content-area p {
    margin-bottom: 1rem;
    text-indent: 2em;
}
.pf-content-area figure {
    margin: 1.5rem 0;
    text-align: center;
}
.pf-content-area figure img {
    margin: 0 auto;
    border: 1px solid var(--pf-border);
    border-radius: var(--pf-radius);
}
.pf-content-area figcaption {
    font-size: 0.8rem;
    color: var(--pf-gray2);
    margin-top: 0.5rem;
    font-family: var(--pf-font-data);
}

/* === Data Table === */
.pf-table-wrap { overflow-x: auto; margin: 1.5rem 0; }
.pf-table {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--pf-font-data);
    font-size: 0.85rem;
}
.pf-table th {
    background: var(--pf-bg-card2);
    padding: 0.6rem 1rem;
    text-align: left;
    border-bottom: 2px solid var(--pf-border);
    color: var(--pf-orange);
    font-weight: 700;
    white-space: nowrap;
}
.pf-table td {
    padding: 0.5rem 1rem;
    border-bottom: 1px solid rgba(51,51,51,0.5);
}
.pf-table tr:hover td { background: rgba(255,255,255,0.02); }

/* === Exchange Page === */
.pf-exchange-layout {
    display: grid;
    grid-template-columns: 250px 1fr 300px;
    gap: 1rem;
    padding: 1.5rem;
    max-width: 1440px;
    margin: 0 auto;
    min-height: calc(100vh - 200px);
}
.pf-exchange-sidebar {
    background: var(--pf-bg-card);
    border: 1px solid var(--pf-border);
    border-radius: var(--pf-radius);
    overflow: hidden;
}
.pf-exchange-sidebar-title {
    padding: 0.8rem 1rem;
    font-family: var(--pf-font-data);
    font-size: 0.85rem;
    color: var(--pf-orange);
    border-bottom: 1px solid var(--pf-border);
    background: rgba(255,165,0,0.05);
}
.pf-pair-list { list-style: none; }
.pf-pair-list li {
    padding: 0.6rem 1rem;
    border-bottom: 1px solid rgba(51,51,51,0.3);
    cursor: pointer;
    transition: background .2s;
    font-size: 0.85rem;
}
.pf-pair-list li:hover { background: rgba(255,255,255,0.03); }
.pf-pair-list li.pf-selected { background: rgba(74,144,226,0.1); border-left: 3px solid var(--pf-blue); }
.pf-exchange-main {
    background: var(--pf-bg-card);
    border: 1px solid var(--pf-border);
    border-radius: var(--pf-radius);
    padding: 1rem;
}
.pf-exchange-order {
    background: var(--pf-bg-card);
    border: 1px solid var(--pf-border);
    border-radius: var(--pf-radius);
    padding: 1.2rem;
}
.pf-order-title {
    font-family: var(--pf-font-data);
    font-size: 0.9rem;
    color: var(--pf-orange);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--pf-border);
}
.pf-order-field { margin-bottom: 1rem; }
.pf-order-label {
    display: block;
    font-size: 0.8rem;
    color: var(--pf-gray2);
    margin-bottom: 0.3rem;
    font-family: var(--pf-font-data);
}
.pf-order-input {
    width: 100%;
    background: #0a0a1a;
    border: 1px solid var(--pf-border);
    border-radius: var(--pf-radius);
    padding: 0.6rem 0.8rem;
    color: var(--pf-gray);
    font-family: var(--pf-font-data);
    font-size: 0.9rem;
    outline: none;
}
.pf-order-input:focus { border-color: var(--pf-blue); }
.pf-order-btns { display: flex; gap: 0.5rem; margin-top: 1rem; }
.pf-order-btns .pf-btn { flex: 1; text-align: center; }
.pf-balance-info {
    margin-top: 1rem;
    padding: 0.8rem;
    background: rgba(0,255,0,0.03);
    border: 1px solid rgba(0,255,0,0.1);
    border-radius: var(--pf-radius);
    font-family: var(--pf-font-data);
    font-size: 0.85rem;
}
.pf-positions {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--pf-bg-card);
    border: 1px solid var(--pf-border);
    border-radius: var(--pf-radius);
}

/* === APP Page === */
.pf-app-page {
    min-height: calc(100vh - 200px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem 1.5rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.pf-app-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.15;
    z-index: 0;
}
.pf-app-content { position: relative; z-index: 1; }
.pf-app-content h1 { font-size: 2rem; margin-bottom: 1rem; }
.pf-app-content p { color: var(--pf-gray2); max-width: 600px; margin: 0 auto 2rem; line-height: 1.8; }
.pf-qr-code {
    width: 200px;
    height: 200px;
    margin: 0 auto 2rem;
    border: 2px solid var(--pf-border);
    border-radius: 8px;
    background: #fff;
    padding: 8px;
}
.pf-app-btns { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.pf-app-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    background: var(--pf-bg-card);
    border: 1px solid var(--pf-border);
    border-radius: 8px;
    color: var(--pf-gray);
    font-size: 0.9rem;
    transition: border-color .3s;
    text-decoration: none;
}
.pf-app-btn:hover { border-color: var(--pf-green); color: var(--pf-green); }
.pf-app-btn-icon { font-size: 1.5rem; }

/* === Breadcrumb === */
.pf-breadcrumb {
    padding: 0.8rem 0;
    font-size: 0.8rem;
    color: var(--pf-gray2);
    font-family: var(--pf-font-data);
}
.pf-breadcrumb a { color: var(--pf-gray2); }
.pf-breadcrumb a:hover { color: var(--pf-blue); }
.pf-breadcrumb span { margin: 0 0.3rem; }

/* === Article List === */
.pf-article-list { list-style: none; }
.pf-article-item {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem 0;
    border-bottom: 1px solid rgba(51,51,51,0.5);
    transition: background .2s;
}
.pf-article-item:hover { background: rgba(255,255,255,0.02); }
.pf-article-thumb {
    width: 200px;
    height: 130px;
    flex-shrink: 0;
    border-radius: var(--pf-radius);
    object-fit: cover;
    border: 1px solid var(--pf-border);
}
.pf-article-body { flex: 1; }
.pf-article-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--pf-gray);
}
.pf-article-title:hover { color: var(--pf-blue); }
.pf-article-desc {
    font-size: 0.85rem;
    color: var(--pf-gray2);
    line-height: 1.6;
    margin-bottom: 0.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.pf-article-meta {
    font-size: 0.75rem;
    color: var(--pf-gray2);
    font-family: var(--pf-font-data);
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1440px) {
    .pf-exchange-layout { grid-template-columns: 220px 1fr 280px; }
}

@media (max-width: 1024px) {
    .pf-index-grid { grid-template-columns: repeat(3, 1fr); }
    .pf-terminal-grid { grid-template-columns: repeat(2, 1fr); }
    .pf-analyst-grid { grid-template-columns: 1fr 1fr; }
    .pf-footer-grid { grid-template-columns: 1fr; }
    .pf-exchange-layout {
        grid-template-columns: 1fr;
    }
    .pf-exchange-sidebar { display: none; }
}

@media (max-width: 768px) {
    html { font-size: 15px; }
    .pf-nav-links { display: none; }
    .pf-hamburger { display: flex; }
    .pf-mobile-nav { display: block; }
    .pf-index-grid { grid-template-columns: 1fr; }
    .pf-rank-grid { grid-template-columns: 1fr; }
    .pf-kline-grid { grid-template-columns: 1fr; }
    .pf-terminal-grid { grid-template-columns: 1fr 1fr; }
    .pf-analyst-grid { grid-template-columns: 1fr; }
    .pf-page-hero h1 { font-size: 1.5rem; }
    .pf-article-item { flex-direction: column; }
    .pf-article-thumb { width: 100%; height: 180px; }
    .pf-exchange-layout { grid-template-columns: 1fr; padding: 0.5rem; }
    .pf-exchange-order { margin-top: 1rem; }
}

@media (max-width: 360px) {
    html { font-size: 14px; }
    .pf-container { padding: 0 0.8rem; }
    .pf-terminal-grid { grid-template-columns: 1fr; }
    .pf-search-box { flex-direction: column; }
    .pf-app-btns { flex-direction: column; }
}