/* ===== base ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
    --primary: #0b1220;
    --secondary: #152238;
    --accent: #3d7eff;
    --gold: #f0c040;
    --light: #f0f0f0;
    --gray: #888;
    --radius: 16px;
    --shadow: 0 8px 32px rgba(0,0,0,0.18);
    --font: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", Arial, sans-serif;
    --transition: 0.3s cubic-bezier(.4,0,.2,1);
}
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font); background: #fafafa; color: #222; line-height: 1.7; font-size: 16px; }
a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
img { display: block; max-width: 100%; height: auto; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.sec { padding: 70px 0; }
.alt { background: #f5f7fa; }
.tc { text-align: center; }
.sec-title { font-size: 32px; font-weight: 700; color: var(--primary); margin-bottom: 12px; line-height: 1.3; }
.sec-title span { color: var(--accent); }
.sec-sub { color: #666; max-width: 680px; margin-bottom: 40px; }
.tc .sec-sub { margin-left: auto; margin-right: auto; }

/* ===== breadcrumb ===== */
.bc { background: #f5f5f5; padding: 10px 0; font-size: 13px; color: #666; }
.bc a { color: #666; }
.bc a:hover { color: var(--accent); }
.bc .bc-sep { margin: 0 8px; color: #bbb; }

/* ===== friend links ===== */
.flinks { background: #f7f8fa; padding: 32px 0; border-top: 1px solid #e8ecf2; }
.flinks .fl-title { font-size: 15px; font-weight: 700; color: var(--primary); margin-bottom: 14px; }
.flinks ul { list-style: none; display: flex; flex-wrap: wrap; gap: 9px 24px; }
.flinks a { color: #666; font-size: 13px; }
.flinks a:hover { color: var(--accent); }
.flinks.g2 ul { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 26px; }
.flinks.g2 a { position: relative; padding-left: 13px; }
.flinks.g2 a::before { content: ''; position: absolute; left: 0; top: 50%; margin-top: -2px; width: 4px; height: 4px; background: var(--accent); border-radius: 50%; }
.flinks.col ul { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 11px 22px; }
.flinks.col a { display: block; padding: 7px 12px; background: #fff; border-radius: calc(var(--radius) - 4px); border: 1px solid #e8ecf2; }
.flinks.col a:hover { border-color: var(--accent); }
@media (max-width: 768px) {
    .flinks.g2 ul, .flinks.col ul { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ===== modal ===== */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.75); display: flex; align-items: center; justify-content: center; z-index: 2000; opacity: 0; pointer-events: none; transition: opacity var(--transition); padding: 20px; }
.modal-overlay.active { opacity: 1; pointer-events: auto; }
.modal-box { background: #fff; border-radius: var(--radius); max-width: 560px; width: 100%; padding: 30px; position: relative; max-height: 90vh; overflow-y: auto; }
.modal-close { position: absolute; top: 16px; right: 16px; width: 32px; height: 32px; border: none; background: #f0f0f0; border-radius: 50%; cursor: pointer; font-size: 18px; line-height: 1; color: #444; }
.modal-box h2 { font-size: 24px; margin-bottom: 8px; color: var(--primary); }
.modal-box .m-year { color: #888; margin-bottom: 16px; }
.modal-box .m-desc { color: #555; line-height: 1.8; margin-bottom: 16px; }
.modal-box .m-meta { color: var(--accent); font-size: 14px; font-weight: 600; }

/* ===== demo -> detail links (works cards / faq questions become real anchors) ===== */
a.wk1-btn { display: inline-block; text-align: center; }
.fq1-link { color: inherit; }
.fq1-link:hover { color: var(--accent); }

.nv8-bar { position: relative; z-index: 900; background: transparent; border-bottom: 1px solid rgba(0,0,0,0.15); }
.nv8-inner { display: flex; align-items: flex-end; justify-content: space-between; gap: 28px; padding: 20px 0; }
.nv8-logo { display: inline-flex; align-items: baseline; gap: 6px; color: var(--primary); text-decoration: none; flex-shrink: 0; }
.nv8-ico { font-size: 15px; line-height: 1; }
.nv8-kw { font-size: 17px; font-weight: 600; letter-spacing: 3px; white-space: nowrap; }
.nv8-kw em { font-style: normal; color: var(--gray); }
.nv8-brand { font-size: 10px; letter-spacing: 2px; color: var(--gray); text-transform: uppercase; white-space: nowrap; }
.nv8-menu { display: flex; align-items: center; justify-content: flex-end; flex-wrap: wrap; gap: 24px; list-style: none; }
.nv8-menu a { display: block; padding-bottom: 3px; font-size: 13px; letter-spacing: 1px; color: #5a5a5a; text-decoration: none; border-bottom: 1px solid transparent; }
.nv8-menu a:hover { color: var(--primary); border-bottom-color: var(--primary); }
@media (max-width:768px) {
    .nv8-inner { flex-direction: column; align-items: center; gap: 10px; padding: 14px 0; }
    .nv8-kw { font-size: 16px; letter-spacing: 2px; }
    .nv8-ico { font-size: 14px; }
    .nv8-brand { font-size: 9px; }
    .nv8-menu { justify-content: center; gap: 14px; }
    .nv8-menu a { font-size: 12px; }
}
.hr4-hero {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 560px;
    padding: 96px 0 130px;
    background: linear-gradient(135deg, var(--primary) 0%, #0e1520 52%, var(--secondary) 100%);
    color: #fff;
    text-align: center;
    overflow: hidden;
}
.hr4-grid {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(255,255,255,0.07) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.07) 1px, transparent 1px);
    background-size: 56px 56px;
    -webkit-mask-image: radial-gradient(circle at 50% 36%, #000 0%, transparent 76%);
    mask-image: radial-gradient(circle at 50% 36%, #000 0%, transparent 76%);
}
.hr4-glow {
    position: absolute;
    top: -190px;
    left: 50%;
    width: 620px;
    height: 620px;
    transform: translateX(-50%);
    border-radius: 50%;
    background: radial-gradient(circle, var(--accent) 0%, transparent 66%);
    opacity: 0.32;
}
.hr4-band {
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 300px;
    object-fit: cover;
    opacity: 0.4;
    -webkit-mask-image: linear-gradient(to top, #000 0%, rgba(0,0,0,0.2) 62%, transparent 100%);
    mask-image: linear-gradient(to top, #000 0%, rgba(0,0,0,0.2) 62%, transparent 100%);
}
.hr4-inner {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 780px;
    margin: 0 auto;
    padding: 0 20px;
}
.hr4-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 20px;
    margin-bottom: 26px;
    border: 1px solid rgba(255,255,255,0.28);
    border-radius: 999px;
    color: var(--gold);
    font-size: 14px;
    letter-spacing: 2px;
}
.hr4-title {
    margin-bottom: 10px;
    font-size: 64px;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: 6px;
}
.hr4-sub {
    margin-bottom: 22px;
    color: var(--gold);
    font-size: 20px;
    font-weight: 600;
    letter-spacing: 8px;
}
.hr4-desc {
    max-width: 640px;
    margin: 0 auto 34px;
    color: rgba(255,255,255,0.82);
    font-size: 16px;
    line-height: 1.9;
}
.hr4-btn {
    display: inline-block;
    padding: 14px 42px;
    border: 2px solid rgba(255,255,255,0.7);
    border-radius: 999px;
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 2px;
    transition: background 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
}
.hr4-btn:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
    transform: translateY(-3px);
}
@media (max-width: 768px) {
    .hr4-hero {
        min-height: 440px;
        padding: 60px 0 92px;
    }
    .hr4-chip {
        padding: 5px 14px;
        margin-bottom: 16px;
        font-size: 12px;
        letter-spacing: 1px;
    }
    .hr4-title {
        font-size: 32px;
        letter-spacing: 2px;
    }
    .hr4-sub {
        margin-bottom: 14px;
        font-size: 14px;
        letter-spacing: 4px;
    }
    .hr4-desc {
        margin-bottom: 22px;
        font-size: 14px;
        line-height: 1.72;
    }
    .hr4-band {
        height: 180px;
    }
    .hr4-btn {
        padding: 11px 26px;
        font-size: 14px;
    }
}
.it4-head { margin-bottom: 34px; }
.it4-head .sec-sub { margin-bottom: 0; }
.it4-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.it4-card { padding: 30px 32px; background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); }
.it4-card p { color: #555; line-height: 1.9; font-size: 15px; margin-bottom: 14px; }
.it4-card p:last-child { margin-bottom: 0; }
.it4-card p strong { color: var(--primary); }
.it4-card-wide { grid-column: span 2; }
.it4-card-data { display: flex; flex-direction: column; justify-content: center; gap: 18px; background: var(--primary); }
.it4-metric { display: flex; align-items: baseline; gap: 12px; padding-bottom: 16px; border-bottom: 1px solid rgba(255, 255, 255, .14); }
.it4-metric:last-child { padding-bottom: 0; border-bottom: 0; }
.it4-mnum { font-size: 30px; line-height: 1; font-weight: 800; color: #fff; }
.it4-mlbl { font-size: 13px; color: rgba(255, 255, 255, .72); }
@media (max-width: 768px) {
    .it4-grid { grid-template-columns: 1fr; gap: 16px; }
    .it4-card { padding: 22px 20px; }
    .it4-card-wide { grid-column: span 1; }
    .it4-card-data { gap: 14px; }
    .it4-mnum { font-size: 24px; }
}
.wk4-masonry { column-count:3; column-gap:22px }
.wk4-masonry .wk1-item { break-inside:avoid; -webkit-column-break-inside:avoid; page-break-inside:avoid; display:block; margin:0 0 22px; background:#fff; border-radius:var(--radius); overflow:hidden; box-shadow:var(--shadow) }
.wk4-masonry .wk1-item:nth-child(3n+1) .wk1-thumb { aspect-ratio:1/1 }
.wk4-masonry .wk1-item:nth-child(3n+2) .wk1-thumb { aspect-ratio:16/9 }
.wk4-masonry .wk1-item:nth-child(3n) .wk1-thumb { aspect-ratio:4/5 }
.wk4-masonry .wk1-thumb { position:relative; overflow:hidden; background:var(--light) }
.wk4-masonry .wk1-thumb img { display:block; width:100%; height:100%; object-fit:cover; transition:transform .5s ease }
.wk4-masonry .wk1-item:hover .wk1-thumb img { transform:scale(1.06) }
.wk4-masonry .wk1-badge { position:absolute; top:10px; left:10px; padding:3px 10px; border-radius:var(--radius); background:var(--primary); color:#fff; font-size:12px }
.wk4-masonry .wk1-idx { position:absolute; right:12px; bottom:8px; color:#fff; font-size:26px; font-weight:700; line-height:1; opacity:.6 }
.wk4-masonry .wk1-info { padding:14px 16px 16px }
.wk4-masonry .wk1-head { display:flex; align-items:baseline; justify-content:space-between; gap:8px }
.wk4-masonry .wk1-title { margin:0; font-size:16px; line-height:1.45; color:var(--primary) }
.wk4-masonry .wk1-tag { flex:none; color:var(--accent); font-size:12px }
.wk4-masonry .wk1-meta { margin-top:6px; font-size:12px; color:var(--gray) }
.wk4-masonry .wk1-desc { margin:8px 0 12px; font-size:13px; line-height:1.7; color:var(--gray) }
.wk4-masonry .wk1-btn { width:100%; padding:8px 0; border:1px dashed var(--accent); border-radius:var(--radius); background:transparent; color:var(--accent); font-size:13px; cursor:pointer; transition:background .25s ease, color .25s ease }
.wk4-masonry .wk1-btn:hover { background:var(--accent); color:#fff }
@media (max-width:768px) {
    .wk4-masonry { column-count:2; column-gap:12px }
    .wk4-masonry .wk1-item { margin-bottom:12px }
    .wk4-masonry .wk1-item:nth-child(3n) .wk1-thumb { aspect-ratio:1/1 }
    .wk4-masonry .wk1-item:nth-child(3n+2) .wk1-thumb { aspect-ratio:1/1 }
    .wk4-masonry .wk1-title { font-size:14px }
    .wk4-masonry .wk1-desc { display:none }
    .wk4-masonry .wk1-btn { padding:7px 0; font-size:12px }
}
.ad8-outline{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.ad8-outline > .ad1-item{position:relative;overflow:hidden;background:transparent;border:1px solid #dfe5ee;border-radius:var(--radius);padding:30px 30px 28px;transition:border-color .3s ease,transform .3s ease,box-shadow .3s ease}
.ad8-outline > .ad1-item:hover{border-color:var(--accent);transform:translateY(-4px);box-shadow:var(--shadow)}
.ad8-outline > .ad1-item::before{content:"";position:absolute;left:0;top:0;width:100%;height:3px;background:linear-gradient(90deg,var(--primary),var(--accent));opacity:0;transition:opacity .3s ease}
.ad8-outline > .ad1-item:hover::before{opacity:1}
.ad8-outline .ad1-toggle{display:none}
.ad8-outline .ad1-icon{position:relative;z-index:1;width:48px;height:48px;margin-bottom:18px;border:1px solid var(--accent);border-radius:12px;color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:21px;line-height:1}
.ad8-outline .ad1-num{position:absolute;right:-6px;bottom:-26px;z-index:0;font-size:112px;font-weight:900;line-height:1;color:#f0f3f8;pointer-events:none;user-select:none}
.ad8-outline .ad1-label{display:inline}
.ad8-outline .ad1-title{position:relative;z-index:1;font-size:18px;font-weight:700;color:var(--primary);margin:0 0 10px;line-height:1.45}
.ad8-outline .ad1-desc{position:relative;z-index:1;font-size:14px;line-height:1.8;color:#666;margin:0}
@media (max-width:768px){
  .ad8-outline{grid-template-columns:1fr;gap:14px}
  .ad8-outline > .ad1-item{padding:22px 18px}
  .ad8-outline .ad1-icon{width:40px;height:40px;margin-bottom:12px;border-radius:10px;font-size:17px}
  .ad8-outline .ad1-num{right:-4px;bottom:-18px;font-size:78px}
  .ad8-outline .ad1-title{font-size:16px;margin-bottom:7px}
  .ad8-outline .ad1-desc{font-size:13px;line-height:1.75}
}
.nw3-cards { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:22px }
.nw3-cards .nw1-item { position:relative; display:flex; flex-direction:column; min-height:190px; overflow:hidden; padding:46px 24px 24px; border:1px solid #e8ecf2; border-top:3px solid var(--primary); border-radius:var(--radius); background:#fff; box-shadow:var(--shadow); text-decoration:none; transition:transform .3s ease, box-shadow .3s ease, border-color .3s ease }
.nw3-cards .nw1-item:hover { transform:translateY(-6px); border-top-color:var(--accent); box-shadow:0 18px 36px rgba(15,23,42,.16) }
.nw3-cards .nw1-date { position:absolute; top:0; right:0; padding:6px 14px; border-bottom-left-radius:var(--radius); background:var(--primary); color:#fff; font-size:12px; letter-spacing:.5px; transition:background .3s ease }
.nw3-cards .nw1-item:hover .nw1-date { background:var(--accent) }
.nw3-cards .nw1-title { font-size:21px; line-height:1.45; font-weight:700; color:var(--primary); transition:color .3s ease }
.nw3-cards .nw1-item:hover .nw1-title { color:var(--accent) }
.nw3-cards .nw1-idx { margin-top:auto; padding-top:20px; font-size:46px; font-weight:800; line-height:1; color:#eef1f6; letter-spacing:-1px }
@media (max-width:768px) {
    .nw3-cards { grid-template-columns:minmax(0,1fr); gap:14px }
    .nw3-cards .nw1-item { min-height:0; padding:38px 18px 18px }
    .nw3-cards .nw1-date { padding:5px 11px; font-size:11px }
    .nw3-cards .nw1-title { font-size:17px }
    .nw3-cards .nw1-idx { padding-top:14px; font-size:34px }
}
.fq2-grid { position:relative; display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); max-width:1080px; margin:0 auto; border-top:1px solid #e4eaf2 }
.fq2-grid::after { content:""; position:absolute; top:0; bottom:0; left:50%; width:1px; background:#e4eaf2 }
.fq2-grid .fq1-item { padding:24px 34px 26px; border-bottom:1px solid #e4eaf2; transition:background .3s ease }
.fq2-grid .fq1-item:hover { background:#fafbfe }
.fq2-grid .fq1-q { font-size:16px; line-height:1.55; font-weight:700; color:var(--primary) }
.fq2-grid .fq1-no { display:inline-block; min-width:26px; margin-right:6px; color:var(--gold); font-size:15px; font-weight:700; letter-spacing:1px }
.fq2-grid .fq1-a { max-height:none; overflow:visible; opacity:1 }
.fq2-grid .fq1-a-in { margin-top:10px; padding-left:34px; font-size:14px; line-height:1.85; color:var(--gray) }
@media (max-width:768px) {
    .fq2-grid { grid-template-columns:minmax(0,1fr) }
    .fq2-grid::after { display:none }
    .fq2-grid .fq1-item { padding:18px 16px; }
    .fq2-grid .fq1-q { font-size:15px }
    .fq2-grid .fq1-no { min-width:22px; margin-right:4px; font-size:14px }
    .fq2-grid .fq1-a-in { margin-top:8px; padding-left:26px; font-size:13px }
}
.cm3-masonry { column-count:3; column-gap:22px }
.cm3-masonry .cm1-item { position:relative; overflow:hidden; break-inside:avoid; -webkit-column-break-inside:avoid; page-break-inside:avoid; display:block; margin:0 0 22px; padding:18px 18px 18px 22px; background:#fff; border:1px solid #e8ecf2; border-left:4px solid var(--accent); border-radius:var(--radius); box-shadow:var(--shadow); transition:box-shadow .3s ease, border-color .3s ease }
.cm3-masonry .cm1-item:hover { box-shadow:0 16px 32px rgba(15,23,42,.14) }
.cm3-masonry .cm1-item:nth-child(3n+2) { border-left-color:var(--secondary) }
.cm3-masonry .cm1-item:nth-child(3n) { border-left-color:var(--gold) }
.cm3-masonry .cm1-head { display:flex; align-items:center; gap:10px }
.cm3-masonry .cm1-av { flex:none; width:40px; height:40px; border-radius:12px; object-fit:cover; background:var(--light) }
.cm3-masonry .cm1-who { display:flex; flex-direction:column; gap:2px; min-width:0 }
.cm3-masonry .cm1-name { font-size:14px; font-weight:600; color:var(--primary) }
.cm3-masonry .cm1-date { font-size:12px; color:var(--gray) }
.cm3-masonry .cm1-text { margin:12px 0 0; font-size:13px; line-height:1.85; color:#4b5563 }
.cm3-masonry .cm1-idx { position:absolute; top:16px; right:16px; font-size:12px; letter-spacing:1px; color:#c3cad6 }
.cm3-masonry .cm1-initial { position:absolute; right:14px; bottom:6px; font-size:46px; font-weight:700; line-height:1; color:var(--light); pointer-events:none }
@media (max-width:768px) {
    .cm3-masonry { column-count:2; column-gap:12px }
    .cm3-masonry .cm1-item { margin-bottom:12px; padding:14px 14px 14px 16px }
    .cm3-masonry .cm1-av { width:34px; height:34px; border-radius:10px }
    .cm3-masonry .cm1-name { font-size:13px }
    .cm3-masonry .cm1-text { margin-top:10px; font-size:12px; line-height:1.75 }
    .cm3-masonry .cm1-idx { top:12px; right:12px; font-size:11px }
    .cm3-masonry .cm1-initial { font-size:34px }
}
.ft4-foot { background: var(--primary); color: rgba(255,255,255,0.68); }
.ft4-top { display: grid; grid-template-columns: 1.6fr 1fr 1.1fr; gap: 34px; padding: 46px 20px 34px; }
.ft4-logo { display: inline-flex; align-items: center; gap: 8px; color: #fff; text-decoration: none; }
.ft4-ico { font-size: 20px; line-height: 1; }
.ft4-kw { font-size: 19px; font-weight: 800; letter-spacing: 1px; }
.ft4-kw em { font-style: normal; color: var(--gold); }
.ft4-brand { font-size: 11px; color: rgba(255,255,255,0.44); padding-left: 8px; border-left: 1px solid rgba(255,255,255,0.2); white-space: nowrap; }
.ft4-line { margin-top: 15px; font-size: 13px; line-height: 1.95; color: rgba(255,255,255,0.6); }
.ft4-h { margin-bottom: 15px; font-size: 14px; font-weight: 700; color: #fff; letter-spacing: 1px; }
.ft4-menu { list-style: none; }
.ft4-menu li { margin-bottom: 9px; }
.ft4-menu a { font-size: 13px; color: rgba(255,255,255,0.66); text-decoration: none; }
.ft4-menu a:hover { color: var(--gold); }
.ft4-tags { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; }
.ft4-tags li { padding: 4px 12px; font-size: 12px; color: #fff; border: 1px solid rgba(255,255,255,0.26); border-radius: 999px; }
.ft4-bar { background: rgba(0,0,0,0.26); }
.ft4-barin { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 20px; font-size: 12px; color: rgba(255,255,255,0.56); }
.ft4-copy b { font-weight: 600; color: var(--gold); letter-spacing: 1px; }
@media (max-width:768px) {
    .ft4-top { grid-template-columns: 1fr; gap: 26px; padding: 30px 20px 24px; }
    .ft4-ico { font-size: 18px; }
    .ft4-kw { font-size: 17px; }
    .ft4-brand { font-size: 10px; }
    .ft4-line { margin-top: 11px; font-size: 12px; }
    .ft4-h { margin-bottom: 11px; font-size: 13px; }
    .ft4-menu li { margin-bottom: 8px; }
    .ft4-menu a { font-size: 12px; }
    .ft4-tags li { padding: 3px 10px; font-size: 11px; }
    .ft4-barin { flex-direction: column; gap: 6px; text-align: center; padding: 12px 20px; }
    .ft4-copy { font-size: 11px; }
}


@media (max-width: 768px) {
    .sec { padding: 50px 0; }
    .sec-title { font-size: 26px; }
}