/* roulang page: index */
:root {
  --bg: #050A14;
  --bg2: #0A1322;
  --card: #0E1C30;
  --blue: #2B7FFF;
  --cyan: #19D6FF;
  --green: #18F2C9;
  --amber: #FFC978;
  --txt: #EDF4FF;
  --txt2: #A3B8D6;
  --txt3: #627B9E;
  --line: rgba(120, 190, 255, 0.16);
  --r-lg: 24px;
  --r-md: 16px;
  --r-sm: 12px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--txt);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol, li { list-style: none; margin: 0; padding: 0; }
button, input { font-family: inherit; font-size: inherit; }

.container-x { max-width: 1280px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }
.section { padding: 88px 0; }
.section-tight { padding: 56px 0; }
.section-title {
  font-size: clamp(24px, 4vw, 34px);
  font-weight: 750;
  line-height: 1.3;
  margin: 10px 0 0;
  letter-spacing: .01em;
}
.section-title span { color: var(--cyan); }
.section-lead { color: var(--txt2); font-size: 15px; margin-top: 10px; max-width: 640px; }
.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(25, 214, 255, .08);
  color: var(--cyan);
  padding: 5px 14px;
  border-radius: 999px;
  font-size: 13px;
  border: 1px solid rgba(25, 214, 255, .2);
}
.divider-line { height: 1px; background: linear-gradient(90deg, transparent, rgba(120, 190, 255, .22), transparent); border: 0; margin: 80px 0 0; }

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #050A14; }
::-webkit-scrollbar-thumb { background: #203452; border-radius: 99px; }

.container-x { width: 100%; }
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(5, 10, 20, .76);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(33, 150, 255, .17);
  transition: box-shadow .3s ease, background .3s ease, border-color .3s ease;
}
.site-header.compact {
  background: rgba(5, 10, 20, .92);
  box-shadow: 0 12px 32px rgba(0, 0, 0, .22);
}
.top-tip {
  background: rgba(7, 20, 36, .98);
  border-bottom: 1px solid rgba(25, 180, 255, .07);
  color: rgba(163, 184, 214, .75);
  text-align: center;
  font-size: 11px;
  padding: 5px 0;
  letter-spacing: .05em;
}
.brand { display: inline-flex; align-items: center; gap: 8px; font-weight: 800; font-size: 19px; white-space: nowrap; letter-spacing: .01em; }
.brand .logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 10px;
  background: linear-gradient(135deg, #1D9BFF, #18F2C9);
  color: #04121f;
  font-weight: 900;
  font-size: 18px;
  box-shadow: 0 0 18px rgba(29, 190, 255, .25);
}
.brand .logo-text { color: #fff; }
.brand .logo-text em { font-style: normal; background: linear-gradient(135deg, #9adcff, #18F2C9); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.nav-chips { display: flex; align-items: center; gap: 6px; padding: 5px; background: rgba(14, 28, 48, .66); border: 1px solid rgba(120, 190, 255, .13); border-radius: 999px; backdrop-filter: blur(14px); }
.chip-item {
  display: inline-flex;
  align-items: center;
  padding: 8px 17px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--txt2);
  transition: color .2s, background .2s, box-shadow .2s;
}
.chip-item:hover { color: #fff; background: rgba(43, 127, 255, .12); }
.chip-item.active {
  background: linear-gradient(135deg, #1D9BFF, #18F2C9);
  color: #031018;
  font-weight: 700;
  box-shadow: 0 6px 20px rgba(29, 190, 255, .25);
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, #1D9BFF, #17e3c8);
  color: #03131d;
  font-weight: 700;
  border: 0;
  border-radius: 14px;
  padding: 10px 22px;
  cursor: pointer;
  transition: transform .16s, box-shadow .2s, filter .2s;
  box-shadow: 0 0 24px rgba(29, 190, 255, .28);
  min-height: 44px;
  justify-content: center;
}
.btn-primary:hover { filter: brightness(1.08); transform: translateY(-2px); box-shadow: 0 0 32px rgba(29, 214, 255, .45); }
.btn-primary:active { transform: scale(.98); }
.btn-primary:focus-visible, .chip-item:focus-visible, .menu-btn:focus-visible, .btn-ghost:focus-visible, a:focus-visible, details:focus-visible, summary:focus-visible {
  outline: 2px solid rgba(25, 214, 255, .9);
  outline-offset: 3px;
  border-radius: 12px;
}
.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(25, 214, 255, .08);
  color: #dbeaff;
  border: 1px solid rgba(25, 214, 255, .36);
  border-radius: 14px;
  padding: 10px 22px;
  cursor: pointer;
  font-weight: 600;
  min-height: 44px;
  transition: background .2s, border-color .2s, transform .16s;
  justify-content: center;
}
.btn-ghost:hover { background: rgba(25, 214, 255, .16); border-color: rgba(25, 214, 255, .72); transform: translateY(-2px); }
.btn-ghost:active { transform: scale(.98); }
.menu-btn {
  display: none;
  background: rgba(25, 214, 255, .08);
  border: 1px solid rgba(25, 214, 255, .24);
  color: #cdeeff;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 17px;
}
.mobile-nav { max-height: 0; overflow: hidden; transition: max-height .28s ease; background: rgba(8, 15, 28, .98); border-bottom: 1px solid rgba(120,190,255,.14); }
.mobile-nav.open { max-height: 500px; }
.mobile-nav-inner { padding: 12px 20px 18px; }
.mobile-link {
  display: block;
  padding: 12px 16px;
  border-radius: 14px;
  font-size: 15px;
  color: var(--txt2);
  margin-bottom: 6px;
}
.mobile-link:hover, .mobile-link.active { color: #fff; background: rgba(43, 127, 255, .12); }
.menu-grid-bg { position: fixed; inset: 0; z-index: -1; pointer-events: none; opacity: .4; }
.section-center { text-align: center; }
.eyebrow { color: #18d9ff; font-size: 14px; letter-spacing: .1em; margin-bottom: 16px; display: inline-flex; align-items: center; gap: 8px; }
.eyebrow:before, .eyebrow:after { content: ''; width: 16px; height: 1px; background: rgba(25,214,255,.5); }
.hero-content .eyebrow:before, .hero-content .eyebrow:after { display: none; }

.trust-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: rgba(10, 19, 34, .7);
  border: 1px solid rgba(120, 190, 255, .12);
  border-radius: 20px;
  overflow: hidden;
}
.trust-item { padding: 18px 24px; border-right: 1px solid rgba(120,190,255,.1); }
.trust-item:last-child { border-right: 0; }
.trust-item strong { display: block; font-size: 16px; color: #fff; margin-bottom: 4px; }
.trust-item span { color: var(--txt2); font-size: 13.5px; }
.card-surface { background: rgba(14, 28, 48, .82); border: 1px solid var(--line); border-radius: 24px; }
.tag {
  display: inline-flex;
  background: rgba(43, 127, 255, .12);
  border: 1px solid rgba(43, 127, 255, .24);
  color: #b6d9ff;
  font-size: 12px;
  padding: 3px 11px;
  border-radius: 999px;
}
.tag-green { background: rgba(24, 242, 201, .1); border-color: rgba(24, 242, 201, .28); color: #a3f8e2; }
.tag-amber { background: rgba(255, 201, 120, .1); border-color: rgba(255, 201, 120, .3); color: #ffdfaa; }
.tag-pink { background: rgba(255, 121, 198, .08); border-color: rgba(255, 121, 198, .2); color: #ffc3e3; }

.bento-card {
  position: relative;
  min-height: 190px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: linear-gradient(145deg, rgba(14,28,48,.95), rgba(7,15,30,.92));
  overflow: hidden;
  transition: border-color .2s, transform .2s, box-shadow .2s;
  display: flex;
  flex-direction: column;
}
.bento-card .bento-body { padding: 22px; position: relative; z-index: 2; display: flex; flex-direction: column; flex: 1; }
.bento-card:hover { transform: translateY(-3px); border-color: rgba(43,127,255,.45); box-shadow: 0 16px 34px rgba(0,0,0,.25); }
.bento-card img.bento-media { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .18; }
.bento-card h3 { margin: 8px 0 6px; font-size: 18px; font-weight: 700; line-height: 1.3; }
.bento-card p { color: var(--txt2); font-size: 14px; margin: 0 0 14px; line-height: 1.7; flex: 1; }
.bento-card .go-link { color: var(--cyan); font-size: 13.5px; display: inline-flex; align-items: center; gap: 6px; transition: gap .2s; }
.bento-card .go-link:hover { gap: 10px; color: #7cefff; }

.news-card { display: flex; gap: 18px; padding: 20px 0; border-bottom: 1px solid rgba(120,190,255,.1); align-items: flex-start; }
.news-card:first-child { padding-top: 0; }
.news-card:last-child { border-bottom: 0; padding-bottom: 0; }
.news-thumb { width: 160px; height: 100px; border-radius: 14px; flex-shrink: 0; object-fit: cover; overflow: hidden; }
.news-body { min-width: 0; flex: 1; }
.news-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px; margin-bottom: 8px; color: var(--txt3); font-size: 13px; }
.news-title { font-size: 18px; font-weight: 700; margin: 6px 0 6px; line-height: 1.4; color: #fff; }
.news-title a { transition: color .2s; }
.news-title a:hover { color: var(--cyan); }
.news-summary { color: var(--txt2); font-size: 14px; margin: 0 0 6px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.read-more { font-size: 13px; color: var(--cyan); display: inline-flex; gap: 6px; align-items: center; }
.read-more:hover { color: #7cefff; }
.mini-announce { padding: 14px 0; border-bottom: 1px dashed rgba(120, 190, 255, .1); display: flex; gap: 8px; }
.mini-announce:last-child { border-bottom: 0; }
.mini-announce .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--green); box-shadow: 0 0 8px rgba(24, 242, 201, .5); margin-top: 8px; flex-shrink: 0; }
.mini-announce a { font-size: 14px; color: var(--txt2); transition: color .2s; }
.mini-announce a:hover { color: #fff; }

.review-track {
  display: flex;
  gap: 18px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  padding-bottom: 8px;
}
.review-track::-webkit-scrollbar { display: none; }
.review-card {
  min-width: 320px;
  max-width: 360px;
  scroll-snap-align: start;
  background: rgba(14, 28, 48, .82);
  border: 1px solid rgba(120,190,255,.14);
  border-radius: 20px;
  padding: 22px;
}
.stars { color: #FFC978; font-size: 14px; letter-spacing: 2px; }
.faq-wrap { max-width: 820px; }
.faq-item {
  border: 1px solid rgba(120,190,255,.12);
  border-radius: 16px;
  background: rgba(10,19,34,.55);
  overflow: hidden;
  margin-bottom: 12px;
}
.faq-item summary {
  cursor: pointer;
  padding: 18px 22px;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 15.5px;
  color: #e1eaff;
  font-weight: 600;
  transition: background .2s;
}
.faq-item summary:hover { background: rgba(43, 127, 255, .08); }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item p { margin: 0; padding: 0 22px 20px; color: var(--txt2); font-size: 14px; }
.faq-icon { color: var(--cyan); transition: transform .2s; font-size: 18px; flex-shrink: 0; margin-left: 12px; display: inline-flex; }
.faq-item details { transition: all .2s; }
.faq-item[open] summary { border-bottom: 1px solid rgba(120,190,255,.1); }
.faq-item[open] .faq-icon { transform: rotate(45deg); }
.cta-panel {
  position: relative;
  overflow: hidden;
  border-radius: 26px;
  background: linear-gradient(125deg, rgba(10, 30, 52, .98), rgba(4, 16, 29, .98));
  border: 1px solid rgba(25, 214, 255, .2);
  padding: 54px 30px;
  text-align: center;
}
.cta-panel:before {
  content: '';
  position: absolute;
  width: 320px;
  height: 320px;
  left: 50%;
  top: -160px;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(29, 155, 255, .3), transparent 70%);
  pointer-events: none;
}
.service-panel { border-radius: 24px; border: 1px solid rgba(120,190,255,.14); background: rgba(10,19,34,.68); }
.guarantee-item { text-align: center; padding: 24px 12px; }
.guarantee-item .g-icon {
  width: 50px;
  height: 50px;
  margin: 0 auto 14px;
  border-radius: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--green);
  background: rgba(24, 242, 201, .08);
  border: 1px solid rgba(24, 242, 201, .2);
}

.footer {
  background: #060B14;
  border-top: 1px solid rgba(120,190,255,.13);
  padding-top: 54px;
  margin-top: 0;
}
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 36px; }
.footer h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 16px; }
.footer a.footer-link { display: block; color: var(--txt2); margin: 0 0 10px; font-size: 14px; transition: color .2s; }
.footer a.footer-link:hover { color: #fff; }
.footer-bottom { margin-top: 54px; border-top: 1px solid rgba(120,190,255,.1); padding: 20px 0 26px; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; color: var(--txt3); font-size: 13px; }

.hero-visual {
  position: relative;
  min-height: 350px;
  border: 1px solid rgba(120,190,255,.2);
  border-radius: 28px;
  overflow: hidden;
  box-shadow: 0 24px 42px rgba(0,0,0,.3);
}
.hero-visual img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .35; }
.hero-visual .content-card {
  position: relative;
  margin: 22px;
  background: rgba(9, 18, 32, .58);
  border: 1px solid rgba(120,190,255,.2);
  border-radius: 20px;
  padding: 20px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  height: calc(100% - 44px);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}
.hero-stat { display: flex; gap: 12px; align-items: center; border-top: 1px solid rgba(120,190,255,.15); padding-top: 14px; margin-top: 8px; }
.pulse-dot { width: 8px; height: 8px; background: var(--green); border-radius: 50%; box-shadow: 0 0 8px var(--green); animation: pulse 2s ease infinite; }
@keyframes pulse { 0%, 100% {opacity: .4;} 50% {opacity: 1; transform: scale(1.3);} }
.no-scrollbar::-webkit-scrollbar { display: none; }
.scroll-fade { mask-image: linear-gradient(90deg, transparent, black 2%, black 98%, transparent); -webkit-mask-image: linear-gradient(90deg, transparent, black 2%, black 98%, transparent); }

@media (max-width: 1024px) {
  .nav-chips { display: none; }
  .btn-enter { display: none; }
  .menu-btn { display: inline-flex; }
  .section { padding: 70px 0; }
}
@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .trust-bar { grid-template-columns: repeat(2, 1fr); }
  .trust-item { border-bottom: 1px solid rgba(120,190,255,.1); }
  .trust-item:nth-child(2) { border-right: 0; }
  .trust-item:nth-child(n+3) { border-bottom: 0; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-content .btn-row { flex-wrap: wrap; }
  .news-card { flex-direction: column; }
  .news-thumb { width: 100%; height: 180px; }
  .cta-panel { padding: 40px 20px; }
}
@media (max-width: 520px) {
  .section { padding: 44px 0; }
  .footer-grid { grid-template-columns: 1fr; }
  .brand { font-size: 17px; }
  .brand .logo-mark { width: 26px; height: 26px; }
  .footer-bottom { flex-direction: column; gap: 6px; text-align: center; }
}

/* roulang page: category1 */
:root {
        --bg: #050A14;
        --bg2: #0A1322;
        --card: #0E1C30;
        --card-solid: rgba(14, 28, 48, .88);
        --blue: #2B7FFF;
        --cyan: #19D6FF;
        --mint: #18F2C9;
        --amber: #FFC978;
        --txt: #EDF4FF;
        --txt2: #A3B8D6;
        --txt3: #627B9E;
        --line: rgba(120, 190, 255, .16);
        --line-strong: rgba(120, 190, 255, .36);
        --cta: linear-gradient(135deg, #1D9BFF, #21E5CC);
        --cta-glow: 0 0 24px rgba(29, 190, 255, .35);
        --radius-lg: 28px;
        --radius-md: 16px;
        --radius-sm: 12px;
        --shadow: 0 12px 32px rgba(0, 0, 0, .26);
    }

    html {
        scroll-behavior: smooth;
    }

    body {
        margin: 0;
        font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", -apple-system, sans-serif;
        background-color: var(--bg);
        background-image:
            radial-gradient(circle at 78% 8%, rgba(25, 214, 255, .14), transparent 32%),
            radial-gradient(circle at 18% 22%, rgba(43, 127, 255, .12), transparent 30%),
            radial-gradient(circle at 50% 100%, rgba(24, 242, 201, .05), transparent 24%);
        background-attachment: fixed;
        color: var(--txt);
        line-height: 1.7;
        font-size: 16px;
        overflow-x: hidden;
    }

    body::before {
        content: "";
        position: fixed;
        inset: 0;
        background-image:
            linear-gradient(rgba(120, 190, 255, .035) 1px, transparent 1px),
            linear-gradient(90deg, rgba(120, 190, 255, .035) 1px, transparent 1px);
        background-size: 56px 56px;
        pointer-events: none;
        z-index: 0;
    }

    *,
    *::before,
    *::after {
        box-sizing: border-box;
    }

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

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

    button,
    input {
        font-family: inherit;
    }

    .container-x {
        width: 100%;
        max-width: 1280px;
        margin: 0 auto;
        padding-left: 24px;
        padding-right: 24px;
        position: relative;
        z-index: 1;
    }

    .topline {
        background: rgba(10, 25, 50, .72);
        line-height: 34px;
        text-align: center;
        font-size: 12px;
        letter-spacing: .06em;
        color: var(--txt3);
        border-bottom: 1px solid rgba(120, 190, 255, .08);
    }

    .site-header {
        position: sticky;
        top: 0;
        z-index: 60;
        background: rgba(5, 10, 20, .72);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-bottom: 1px solid rgba(43, 127, 255, .2);
        box-shadow: 0 8px 30px rgba(0, 0, 0, .22);
        transition: background .3s ease, box-shadow .3s ease;
    }

    .site-header.is-scrolled {
        background: rgba(7, 15, 29, .82);
        box-shadow: 0 14px 38px rgba(0, 0, 0, .32), 0 0 20px rgba(29, 155, 255, .08);
    }

    .header-inner {
        display: grid;
        grid-template-columns: auto 1fr auto;
        align-items: center;
        gap: 22px;
        min-height: 72px;
        padding-top: 6px;
        padding-bottom: 6px;
    }

    .brand {
        display: inline-flex;
        align-items: center;
        gap: 12px;
        flex-shrink: 0;
    }

    .logo-mark {
        width: 40px;
        height: 40px;
        display: grid;
        place-items: center;
        border-radius: 14px;
        background: radial-gradient(circle at 20% 20%, rgba(255, 255, 255, .5), rgba(255, 255, 255, 0) 36%),
            var(--cta);
        color: #04141f;
        font-size: 23px;
        font-weight: 900;
        font-family: Bahnschrift, DIN Alternate, Arial, sans-serif;
        box-shadow: 0 0 22px rgba(29, 190, 255, .28), inset 0 0 0 1px rgba(255, 255, 255, .3);
    }

    .logo-text {
        font-size: 21px;
        font-weight: 780;
        white-space: nowrap;
        letter-spacing: .01em;
        color: var(--txt);
    }

    .logo-text em {
        font-style: normal;
        background: linear-gradient(90deg, var(--cyan), var(--mint));
        -webkit-background-clip: text;
        background-clip: text;
        color: transparent;
        font-weight: 850;
    }

    .main-nav {
        justify-self: center;
        width: 100%;
        min-width: 0;
    }

    .nav-dock {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .nav-chips {
        display: flex;
        align-items: center;
        gap: 8px;
        padding: 6px;
        border-radius: 999px;
        background: rgba(10, 19, 34, .66);
        border: 1px solid rgba(120, 190, 255, .14);
        overflow-x: auto;
        scrollbar-width: none;
        -webkit-overflow-scrolling: touch;
    }

    .nav-chips::-webkit-scrollbar {
        height: 0;
        display: none;
    }

    .chip-item {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        height: 38px;
        padding: 0 18px;
        border-radius: 999px;
        border: 1px solid transparent;
        color: var(--txt2);
        font-size: 14px;
        white-space: nowrap;
        transition: background .22s ease, color .22s ease, border-color .22s ease, transform .2s ease;
    }

    .chip-item:hover,
    .chip-item:focus-visible {
        color: var(--txt);
        background: rgba(120, 190, 255, .12);
        border-color: rgba(120, 190, 255, .24);
        outline: none;
    }

    .chip-item.active {
        background: var(--cta);
        color: #04141f;
        font-weight: 700;
        border-color: rgba(255, 255, 255, .36);
        box-shadow: 0 0 18px rgba(29, 190, 255, .32), inset 0 0 0 1px rgba(255, 255, 255, .4);
    }

    .header-actions {
        display: flex;
        align-items: center;
        justify-content: flex-end;
        gap: 14px;
        flex-shrink: 0;
    }

    .btn {
        min-height: 44px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 0 20px;
        border-radius: 999px;
        font-weight: 700;
        font-size: 15px;
        border: 1px solid transparent;
        cursor: pointer;
        transition: transform .2s ease, border-color .2s ease, background .2s ease, box-shadow .2s ease, filter .2s ease;
    }

    .btn:focus-visible,
    .chip-item:focus-visible {
        outline: 3px solid rgba(25, 214, 255, .55);
        outline-offset: 3px;
    }

    .btn-primary {
        background: var(--cta);
        box-shadow: var(--cta-glow), inset 0 0 0 1px rgba(255, 255, 255, .38);
        color: #03121d;
    }

    .btn-primary:hover {
        transform: translateY(-2px);
        filter: brightness(1.07);
        box-shadow: 0 0 32px rgba(29, 190, 255, .5), inset 0 0 0 1px rgba(255, 255, 255, .5);
    }

    .btn-primary:active {
        transform: scale(.98);
    }

    .btn-secondary {
        background: rgba(120, 190, 255, .1);
        border-color: rgba(25, 214, 255, .32);
        color: var(--txt);
        backdrop-filter: blur(10px);
    }

    .btn-secondary:hover {
        border-color: rgba(25, 214, 255, .66);
        background: rgba(120, 190, 255, .18);
        box-shadow: 0 0 20px rgba(25, 214, 255, .14);
        transform: translateY(-2px);
    }

    .btn-secondary:active {
        transform: scale(.98);
    }

    .cat-hero {
        position: relative;
        padding: clamp(60px, 7vw, 92px) 0 70px;
        overflow: hidden;
        border-bottom: 1px solid rgba(120, 190, 255, .12);
        background-image:
            linear-gradient(100deg, rgba(5, 10, 20, .94) 30%, rgba(5, 10, 20, .65) 72%, rgba(10, 33, 60, .35)),
            url('/assets/images/backpic/back-1.webp');
        background-size: cover;
        background-position: center;
    }

    .hero-grid {
        display: grid;
        grid-template-columns: 1.05fr .95fr;
        gap: 52px;
        align-items: center;
    }

    .hero-eyebrow {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        font-size: 13px;
        letter-spacing: .04em;
        color: var(--cyan);
        background: rgba(25, 214, 255, .12);
        border: 1px solid rgba(25, 214, 255, .24);
        padding: 7px 14px;
        border-radius: 999px;
        margin-bottom: 22px;
    }

    .cat-hero h1 {
        font-size: clamp(34px, 5vw, 54px);
        font-weight: 900;
        line-height: 1.14;
        letter-spacing: -.01em;
        margin: 0 0 18px;
        color: var(--txt);
    }

    .cat-hero h1 .gradient-line {
        background: linear-gradient(135deg, var(--cyan), var(--mint));
        -webkit-background-clip: text;
        background-clip: text;
        color: transparent;
        display: block;
    }

    .cat-lead {
        max-width: 560px;
        font-size: 18px;
        color: var(--txt2);
        margin: 0 0 30px;
        line-height: 1.7;
    }

    .hero-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 14px;
        margin-bottom: 32px;
    }

    .hero-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
    }

    .tag {
        display: inline-flex;
        align-items: center;
        min-height: 28px;
        padding: 0 13px;
        border-radius: 999px;
        border: 1px solid var(--line);
        background: rgba(10, 24, 44, .8);
        color: var(--txt2);
        font-size: 12px;
        letter-spacing: .02em;
    }

    .tag-green {
        color: var(--mint);
        border-color: rgba(24, 242, 201, .25);
        background: rgba(24, 242, 201, .06);
    }

    .hero-visual {
        position: relative;
    }

    .hero-visual-card {
        position: relative;
        min-height: 380px;
        border-radius: 34px;
        border: 1px solid rgba(120, 190, 255, .2);
        overflow: hidden;
        background:
            radial-gradient(circle at 70% 12%, rgba(25, 214, 255, .4), transparent 42%),
            linear-gradient(145deg, rgba(30, 55, 92, .55), rgba(5, 12, 25, .8)),
            url('/assets/images/backpic/back-3.png') no-repeat center / cover;
        box-shadow: 0 30px 80px rgba(0, 0, 0, .35), 0 0 60px rgba(29, 155, 255, .16);
        backdrop-filter: blur(8px);
    }

    .visual-panel {
        position: absolute;
        left: 28px;
        right: 28px;
        bottom: 26px;
        background: rgba(5, 16, 30, .72);
        border: 1px solid rgba(120, 190, 255, .22);
        border-radius: 22px;
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        padding: 22px 24px;
        box-shadow: 0 16px 36px rgba(0, 0, 0, .3);
    }

    .visual-panel strong {
        display: block;
        color: var(--txt);
        font-size: 17px;
        margin-bottom: 4px;
    }

    .visual-panel span {
        display: inline-flex;
        align-items: center;
        color: var(--txt2);
        font-size: 13px;
        margin-top: 8px;
        margin-right: 8px;
    }

    .visual-orb {
        position: absolute;
        width: 170px;
        height: 170px;
        right: 40px;
        top: 38px;
        border-radius: 50%;
        border: 1px solid rgba(25, 214, 255, .36);
        background: radial-gradient(circle, rgba(25, 214, 255, .22), transparent 62%);
        animation: floatOrb 5s ease-in-out infinite;
    }

    .visual-orb::after {
        content: "";
        position: absolute;
        inset: -9px;
        border-radius: 50%;
        border: 1px dashed rgba(25, 214, 255, .2);
    }

    @keyframes floatOrb {
        0%, 100% {
            transform: translateY(0);
        }
        50% {
            transform: translateY(-12px);
        }
    }

    .section {
        padding: clamp(62px, 8vw, 96px) 0;
    }

    .section + .section {
        border-top: 1px solid rgba(120, 190, 255, .08);
    }

    .section-head {
        max-width: 760px;
        margin-bottom: 46px;
    }

    .section-head.center {
        margin-left: auto;
        margin-right: auto;
        text-align: center;
    }

    .section-eyebrow {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        color: var(--cyan);
        background: rgba(25, 214, 255, .09);
        border: 1px solid rgba(25, 214, 255, .16);
        border-radius: 999px;
        padding: 5px 13px;
        margin-bottom: 14px;
    }

    .section h2 {
        font-size: clamp(25px, 4vw, 36px);
        line-height: 1.2;
        font-weight: 800;
        color: var(--txt);
        margin: 0 0 12px;
        letter-spacing: -.01em;
    }

    .section-desc {
        color: var(--txt2);
        font-size: 16px;
        margin: 0;
    }

    .service-layout {
        display: grid;
        grid-template-columns: 276px minmax(0, 1fr);
        gap: 34px;
        align-items: start;
    }

    .guide-toc {
        position: sticky;
        top: 112px;
        border: 1px solid var(--line);
        background: rgba(14, 26, 46, .86);
        border-radius: 24px;
        padding: 28px 20px;
        backdrop-filter: blur(10px);
    }

    .guide-toc h3 {
        font-size: 14px;
        color: var(--txt3);
        text-transform: uppercase;
        letter-spacing: .06em;
        margin: 0 0 16px;
        padding-left: 8px;
    }

    .toc-list {
        display: flex;
        flex-direction: column;
        gap: 8px;
    }

    .toc-link {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 10px 12px;
        border-radius: 12px;
        border: 1px solid transparent;
        color: var(--txt2);
        font-size: 14px;
        line-height: 1.4;
        transition: background .2s ease, border-color .2s ease, color .2s ease;
    }

    .toc-link i {
        display: grid;
        place-items: center;
        width: 26px;
        height: 26px;
        border-radius: 8px;
        background: rgba(43, 127, 255, .13);
        color: var(--cyan);
        font-style: normal;
        font-size: 12px;
        font-weight: 700;
        border: 1px solid rgba(43, 127, 255, .2);
    }

    .toc-link:hover {
        color: var(--txt);
        background: rgba(120, 190, 255, .1);
        border-color: rgba(120, 190, 255, .18);
    }

    .guide-panels {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 22px;
    }

    .service-block {
        background: var(--card-solid);
        border: 1px solid var(--line);
        border-radius: 24px;
        padding: 28px;
        transition: transform .26s ease, border-color .26s ease, box-shadow .26s ease;
    }

    .service-block:hover {
        transform: translateY(-5px);
        border-color: rgba(120, 190, 255, .36);
        box-shadow: var(--shadow);
    }

    .service-head {
        display: flex;
        align-items: center;
        gap: 14px;
        margin-bottom: 16px;
    }

    .service-head .s-icon {
        width: 50px;
        height: 50px;
        border-radius: 16px;
        display: grid;
        place-items: center;
        background: linear-gradient(145deg, rgba(43, 127, 255, .24), rgba(24, 242, 201, .16));
        border: 1px solid rgba(120, 190, 255, .2);
        color: var(--cyan);
        flex-shrink: 0;
    }

    .service-block h3 {
        font-size: 19px;
        font-weight: 720;
        color: var(--txt);
        margin: 0;
    }

    .service-block p {
        color: var(--txt2);
        font-size: 15px;
        line-height: 1.75;
        margin: 0 0 18px;
    }

    .service-list {
        background: rgba(120, 190, 255, .05);
        border: 1px solid var(--line);
        border-radius: 14px;
        padding: 14px 16px;
        display: flex;
        flex-direction: column;
        gap: 8px;
    }

    .service-list span {
        color: var(--txt2);
        font-size: 14px;
        line-height: 1.5;
    }

    .service-list strong {
        color: var(--txt);
        font-weight: 600;
    }

    .cover-section {
        background:
            radial-gradient(circle at 80% 8%, rgba(43, 127, 255, .11), transparent 28%),
            rgba(9, 20, 35, .4);
    }

    .scene-grid {
        display: grid;
        grid-template-columns: repeat(4, minmax(0, 1fr));
        gap: 20px;
    }

    .scene-card {
        position: relative;
        border-radius: 24px;
        min-height: 268px;
        display: flex;
        align-items: flex-end;
        padding: 22px;
        border: 1px solid var(--line);
        overflow: hidden;
        background-size: cover;
        background-position: center center;
        transition: transform .28s ease, border-color .28s ease, box-shadow .28s ease;
    }

    .scene-card::before {
        content: "";
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, rgba(5, 10, 22, .08) 10%, rgba(5, 10, 22, .88) 100%);
        transition: background .25s ease;
    }

    .scene-card:hover {
        transform: translateY(-6px);
        border-color: rgba(120, 190, 255, .38);
        box-shadow: var(--shadow);
    }

    .scene-info {
        position: relative;
        z-index: 2;
        color: var(--txt);
    }

    .scene-info h3 {
        font-size: 17px;
        font-weight: 700;
        margin: 0 0 6px;
    }

    .scene-info p {
        font-size: 13px;
        line-height: 1.6;
        color: rgba(237, 244, 255, .78);
        margin: 0;
        max-width: 260px;
    }

    .process-section {
        background: var(--bg2);
        border-top: 1px solid rgba(120, 190, 255, .08);
        border-bottom: 1px solid rgba(120, 190, 255, .08);
    }

    .process-grid {
        display: grid;
        grid-template-columns: repeat(4, minmax(0, 1fr));
        gap: 22px;
        counter-reset: step;
    }

    .step-card {
        position: relative;
        background: var(--card-solid);
        border: 1px solid var(--line);
        border-radius: 24px;
        padding: 30px 24px 26px;
        transition: border-color .28s ease, background .28s ease, transform .28s ease;
    }

    .step-card:hover {
        border-color: rgba(25, 214, 255, .36);
        background: rgba(20, 40, 64, .9);
        transform: translateY(-4px);
    }

    .step-num {
        display: inline-flex;
        width: 38px;
        height: 38px;
        align-items: center;
        justify-content: center;
        border-radius: 50%;
        background: linear-gradient(135deg, var(--blue), var(--mint));
        color: #03121d;
        font-weight: 900;
        font-size: 15px;
        margin-bottom: 18px;
    }

    .step-card h3 {
        color: var(--txt);
        font-size: 19px;
        font-weight: 700;
        margin: 0 0 10px;
    }

    .step-card p {
        color: var(--txt2);
        font-size: 15px;
        line-height: 1.75;
        margin: 0;
    }

    .assure-grid {
        display: grid;
        grid-template-columns: repeat(4, minmax(0, 1fr));
        gap: 20px;
    }

    .assure-item {
        text-align: center;
        border: 1px solid var(--line);
        background: rgba(14, 28, 48, .6);
        border-radius: 22px;
        padding: 30px 22px;
        transition: background .25s ease, border-color .25s ease, transform .25s ease;
    }

    .assure-item:hover {
        border-color: rgba(120, 190, 255, .3);
        background: rgba(14, 28, 48, .84);
        transform: translateY(-4px);
    }

    .assure-icon {
        display: inline-flex;
        width: 48px;
        height: 48px;
        border-radius: 15px;
        align-items: center;
        justify-content: center;
        background: rgba(120, 190, 255, .12);
        border: 1px solid rgba(120, 190, 255, .24);
        color: var(--cyan);
        margin-bottom: 16px;
    }

    .assure-item h3 {
        font-size: 16px;
        color: var(--txt);
        margin: 0 0 8px;
        font-weight: 700;
    }

    .assure-item p {
        color: var(--txt3);
        font-size: 13px;
        margin: 0;
        line-height: 1.6;
    }

    .faq-wrap {
        max-width: 880px;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        gap: 14px;
    }

    .faq-item {
        border: 1px solid var(--line);
        border-radius: 18px;
        background: rgba(14, 28, 48, .82);
        overflow: hidden;
        transition: border-color .24s ease, box-shadow .24s ease;
    }

    .faq-item:hover {
        border-color: rgba(25, 214, 255, .28);
    }

    .faq-item details {
        border: none;
        background: transparent;
    }

    .faq-item summary {
        list-style: none;
        cursor: pointer;
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 16px;
        padding: 20px 22px;
        font-weight: 600;
        font-size: 16px;
        color: var(--txt);
        user-select: none;
    }

    .faq-item summary::-webkit-details-marker {
        display: none;
    }

    .faq-item summary::after {
        content: "+";
        flex-shrink: 0;
        width: 30px;
        height: 30px;
        display: grid;
        place-items: center;
        border-radius: 50%;
        border: 1px solid rgba(120, 190, 255, .3);
        color: var(--cyan);
        font-size: 18px;
        font-weight: 400;
        background: rgba(120, 190, 255, .08);
        transition: transform .2s ease, background .2s ease;
    }

    .faq-item details[open] summary::after {
        transform: rotate(45deg);
        color: var(--mint);
    }

    .faq-item .faq-answer {
        padding: 0 22px 20px;
        color: var(--txt2);
        font-size: 15px;
        line-height: 1.8;
        border-top: 1px solid rgba(120, 190, 255, .1);
        margin-top: 0;
    }

    .cta-box {
        border-radius: 34px;
        border: 1px solid rgba(120, 190, 255, .17);
        background:
            radial-gradient(circle at 78% 30%, rgba(43, 127, 255, .14), transparent 34%),
            radial-gradient(circle at 18% 0%, rgba(25, 214, 255, .1), transparent 30%),
            rgba(14, 28, 48, .86);
        text-align: center;
        padding: clamp(44px, 7vw, 80px) clamp(22px, 6vw, 72px);
        box-shadow: 0 0 40px rgba(29, 155, 255, .12);
        position: relative;
        overflow: hidden;
    }

    .cta-box h2 {
        margin-bottom: 12px;
    }

    .cta-box p {
        max-width: 640px;
        margin: 0 auto 30px;
        color: var(--txt2);
        font-size: 16px;
    }

    .footer {
        background: #060b15;
        border-top: 1px solid rgba(120, 190, 255, .13);
        padding: 58px 0 26px;
        color: var(--txt2);
        position: relative;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
        gap: 34px;
        margin-bottom: 34px;
    }

    .footer h4 {
        color: var(--txt);
        font-size: 15px;
        font-weight: 700;
        margin: 0 0 16px;
    }

    .footer-link {
        display: block;
        color: var(--txt2);
        font-size: 14px;
        padding: 5px 0;
        line-height: 1.6;
        transition: color .2s ease, transform .2s ease;
    }

    .footer-link:hover {
        color: var(--cyan);
        transform: translateX(2px);
    }

    .footer-bottom {
        border-top: 1px solid rgba(120, 190, 255, .1);
        padding-top: 20px;
        display: flex;
        justify-content: space-between;
        gap: 14px;
        color: var(--txt3);
        font-size: 13px;
        flex-wrap: wrap;
    }

    @media (max-width: 1180px) {
        .scene-grid {
            grid-template-columns: repeat(4, minmax(0, 1fr));
        }
        .guide-panels {
            grid-template-columns: 1fr;
        }
        .service-block {
            padding: 26px;
        }
        .assure-grid {
            grid-template-columns: repeat(2, minmax(0, 1fr));
        }
    }

    @media (max-width: 1024px) {
        .header-inner {
            grid-template-columns: auto 1fr auto;
            gap: 14px;
        }
        .brand {
            gap: 9px;
        }
        .logo-mark {
            width: 36px;
            height: 36px;
            font-size: 20px;
            border-radius: 12px;
        }
        .logo-text {
            font-size: 18px;
        }
        .chip-item {
            padding: 0 14px;
        }
        .hero-grid {
            grid-template-columns: 1fr 1fr;
            gap: 34px;
        }
        .hero-visual-card {
            min-height: 330px;
        }
        .scene-grid {
            grid-template-columns: repeat(2, minmax(0, 1fr));
        }
        .service-layout {
            grid-template-columns: 1fr;
        }
        .guide-toc {
            position: static;
            margin-bottom: 20px;
        }
        .toc-list {
            flex-direction: row;
            flex-wrap: wrap;
            gap: 10px;
        }
        .toc-link {
            flex: 0 0 auto;
        }
    }

    @media (max-width: 768px) {
        .header-inner {
            display: flex;
            flex-wrap: wrap;
            padding-top: 8px;
            padding-bottom: 8px;
            gap: 12px;
        }
        .brand {
            flex: 1 1 auto;
        }
        .main-nav {
            order: 3;
            width: 100%;
        }
        .nav-dock {
            justify-content: flex-start;
        }
        .nav-chips {
            width: 100%;
            flex-wrap: nowrap;
            justify-content: flex-start;
            overflow-x: auto;
            border-radius: 18px;
        }
        .chip-item {
            flex-shrink: 0;
            height: 36px;
            padding: 0 15px;
        }
        .cat-hero {
            background-position: 75% top;
        }
        .hero-grid {
            grid-template-columns: 1fr;
            gap: 30px;
        }
        .hero-visual {
            order: 2;
        }
        .hero-visual-card {
            min-height: 280px;
        }
        .section {
            padding: 56px 0;
        }
        .scene-grid {
            gap: 16px;
        }
        .scene-card {
            min-height: 238px;
        }
        .process-grid {
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
    }

    @media (max-width: 560px) {
        .brand .logo-text {
            font-size: 17px;
            white-space: normal;
            line-height: 1.25;
        }
        .header-cta {
            display: none;
        }
        .header-actions .text-btn {
            display: none;
        }
        .container-x {
            padding-left: 18px;
            padding-right: 18px;
        }
        .cat-hero {
            padding: 50px 0 44px;
        }
        .cat-lead {
            font-size: 16px;
        }
        .guide-panels {
            grid-template-columns: 1fr;
        }
        .service-block {
            border-radius: 20px;
            padding: 24px 20px;
        }
        .scene-grid {
            grid-template-columns: 1fr;
        }
        .scene-card {
            min-height: 220px;
        }
        .process-grid {
            grid-template-columns: 1fr;
        }
        .assure-grid {
            grid-template-columns: 1fr;
        }
        .visual-orb {
            right: 20px;
            top: 20px;
            width: 130px;
            height: 130px;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 22px;
        }
        .footer-bottom {
            flex-direction: column;
            align-items: flex-start;
        }
    }

/* roulang page: article */
:root {
    --bg: #050A14;
    --bg2: #0A1322;
    --card: rgba(14, 28, 48, 0.84);
    --blue: #2B7FFF;
    --cyan: #19D6FF;
    --mint: #18F2C9;
    --amber: #FFC978;
    --txt: #EDF4FF;
    --txt2: #A3B8D6;
    --txt3: #627B9E;
    --border: rgba(120, 190, 255, 0.16);
    --radius-xl: 28px;
    --radius-lg: 20px;
    --radius-md: 14px;
    --shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
  }

  * {
    box-sizing: border-box;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    margin: 0;
    background: var(--bg);
    color: var(--txt);
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", sans-serif;
    font-size: 16px;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
  }

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

  img {
    max-width: 100%;
    display: block;
    border: 0;
  }

  button,
  input {
    font-family: inherit;
    font-size: inherit;
  }

  .container-x {
    max-width: 1280px;
    margin: 0 auto;
    padding-left: clamp(20px, 4vw, 40px);
    padding-right: clamp(20px, 4vw, 40px);
  }

  .site-topbar {
    background: rgba(5, 10, 20, 0.78);
    border-bottom: 1px solid rgba(120, 190, 255, 0.08);
    font-size: 12px;
    color: var(--txt3);
    padding: 7px 0;
    text-align: center;
    letter-spacing: 0.04em;
  }

  .site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid transparent;
    transition: all 0.3s ease;
  }

  .site-header.scrolled {
    background: rgba(5, 10, 20, 0.76);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border-bottom-color: rgba(25, 214, 255, 0.22);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
  }

  .header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    min-height: 76px;
    padding-top: 12px;
    padding-bottom: 12px;
    transition: min-height 0.3s ease;
  }

  .site-header.scrolled .header-row {
    min-height: 64px;
  }

  .brand {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 800;
    white-space: nowrap;
  }

  .logo-mark {
    width: 36px;
    height: 36px;
    border-radius: 12px;
    background: linear-gradient(135deg, #1D9BFF, #21E5CC);
    color: #061018;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-size: 21px;
    box-shadow: 0 0 18px rgba(29, 190, 255, 0.35);
  }

  .logo-text {
    color: #EDF4FF;
    font-size: 20px;
    line-height: 1.2;
  }

  .logo-text em {
    font-style: normal;
    color: #19D6FF;
    font-weight: 700;
  }

  .nav-chips {
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(10, 19, 34, 0.58);
    border: 1px solid rgba(120, 190, 255, 0.13);
    padding: 5px;
    border-radius: 999px;
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    flex: 1;
    max-width: 580px;
    justify-content: center;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }

  .nav-chips::-webkit-scrollbar {
    display: none;
  }

  .chip-item {
    flex-shrink: 0;
    font-size: 14px;
    padding: 9px 18px;
    border-radius: 999px;
    color: var(--txt2);
    transition: all 0.2s ease;
    border: 1px solid transparent;
  }

  .chip-item:hover {
    background: rgba(25, 214, 255, 0.08);
    color: #fff;
  }

  .chip-item.active {
    background: linear-gradient(135deg, #1D9BFF, #21E5CC);
    color: #04121A;
    font-weight: 700;
    box-shadow: 0 0 18px rgba(29, 190, 255, 0.25);
  }

  .header-cta {
    flex-shrink: 0;
  }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 10px 22px;
    border-radius: 999px;
    background: linear-gradient(135deg, #1D9BFF, #21E5CC);
    color: #04121A;
    font-weight: 700;
    font-size: 15px;
    transition: all 0.2s ease;
    box-shadow: 0 0 24px rgba(29, 190, 255, 0.28);
    border: none;
    cursor: pointer;
  }

  .btn-primary:hover {
    transform: translateY(-2px);
    filter: brightness(1.08);
    box-shadow: 0 4px 28px rgba(29, 190, 255, 0.4);
  }

  .btn-sm {
    min-height: 40px;
    padding: 7px 18px;
    font-size: 14px;
  }

  .btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 10px 22px;
    border-radius: 999px;
    background: rgba(14, 28, 48, 0.5);
    border: 1px solid rgba(25, 214, 255, 0.28);
    color: var(--txt2);
    font-size: 15px;
    transition: all 0.2s ease;
  }

  .btn-ghost:hover {
    border-color: rgba(25, 214, 255, 0.68);
    color: #fff;
    background: rgba(25, 214, 255, 0.08);
    transform: translateY(-2px);
  }

  /* 文章页视觉区 */
  .article-visual {
    padding: 48px 0 32px;
    background:
      linear-gradient(180deg, rgba(5, 10, 20, 0.75), rgba(5, 10, 20, 0.92)),
      radial-gradient(circle at 24% 10%, rgba(25, 214, 255, 0.16), transparent 45%),
      url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
    border-bottom: 1px solid rgba(120, 190, 255, 0.1);
  }

  .breadcrumbs {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 9px;
    font-size: 13px;
    color: var(--txt3);
    margin-bottom: 20px;
  }

  .breadcrumbs a {
    color: #19D6FF;
    transition: opacity 0.2s ease;
  }

  .breadcrumbs a:hover {
    opacity: 0.75;
  }

  .breadcrumbs .sep {
    opacity: 0.45;
  }

  .breadcrumbs .crumb-current {
    color: var(--txt2);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 300px;
  }

  .article-head {
    max-width: 860px;
  }

  .article-cat {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: 999px;
    background: rgba(25, 214, 255, 0.1);
    border: 1px solid rgba(25, 214, 255, 0.24);
    color: #7BE8FF;
    font-size: 13px;
    margin-bottom: 18px;
  }

  .article-title {
    font-size: clamp(30px, 4.6vw, 52px);
    line-height: 1.3;
    font-weight: 800;
    margin: 0 0 16px;
    letter-spacing: -0.01em;
    color: #fff;
  }

  .article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 14px 26px;
    font-size: 13px;
    color: var(--txt3);
    margin-top: 18px;
  }

  .article-meta span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }

  /* 正文背景区 */
  .article-wrap {
    padding: 48px 0 64px;
  }

  .article-panel {
    max-width: 780px;
    margin: 0 auto;
    background: rgba(14, 28, 48, 0.76);
    border: 1px solid var(--border);
    border-radius: 28px;
    padding: clamp(26px, 5vw, 54px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.24);
    transition: border-color 0.2s ease;
  }

  .article-panel:hover {
    border-color: rgba(120, 190, 255, 0.24);
  }

  .article-content {
    font-size: 16px;
    line-height: 1.9;
    color: #D1E2FF;
    word-break: break-word;
    overflow-wrap: anywhere;
  }

  .article-content p {
    margin: 0 0 1.55em;
  }

  .article-content h2 {
    font-size: clamp(22px, 3vw, 30px);
    font-weight: 750;
    color: #fff;
    margin: 2em 0 0.8em;
    line-height: 1.4;
    letter-spacing: -0.02em;
  }

  .article-content h3 {
    font-size: clamp(18px, 2.4vw, 23px);
    font-weight: 700;
    color: #EAF4FF;
    margin: 1.9em 0 0.8em;
    line-height: 1.5;
  }

  .article-content ul,
  .article-content ol {
    margin: 0 0 1.6em;
    padding-left: 1.4em;
  }

  .article-content li {
    margin-bottom: 0.55em;
  }

  .article-content li::marker {
    color: #19D6FF;
  }

  .article-content blockquote {
    margin: 1.9em 0;
    padding: 18px 22px;
    border-left: 4px solid #21E5CC;
    background: rgba(25, 214, 255, 0.06);
    border-radius: 12px;
    color: #A9C8FF;
  }

  .article-content code {
    background: rgba(25, 214, 255, 0.1);
    padding: 2px 7px;
    border-radius: 6px;
    font-size: 0.9em;
    font-family: "SFMono-Regular", Consolas, monospace;
    color: #8FE3FF;
  }

  .article-content pre {
    background: #07101f;
    border: 1px solid rgba(120, 190, 255, 0.14);
    border-radius: 18px;
    padding: 20px;
    overflow-x: auto;
    margin: 0 0 1.7em;
  }

  .article-content pre code {
    background: none;
    color: #C9DFFF;
    padding: 0;
  }

  .article-content img {
    border-radius: 18px;
    margin: 24px 0;
    border: 1px solid rgba(120, 190, 255, 0.12);
  }

  .article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 0 0 24px;
    border-radius: 16px;
    overflow: hidden;
  }

  .article-content th,
  .article-content td {
    border: 1px solid rgba(120, 190, 255, 0.14);
    padding: 12px 14px;
    text-align: left;
  }

  .article-content th {
    background: rgba(43, 127, 255, 0.14);
  }

  .article-content a {
    color: #19D6FF;
  }

  .article-content a:hover {
    text-decoration: underline;
  }

  .article-end {
    margin-top: 46px;
    padding-top: 28px;
    border-top: 1px solid rgba(120, 190, 255, 0.12);
  }

  .article-tools {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
  }

  .tag {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 6px 14px;
    border-radius: 999px;
    background: rgba(43, 127, 255, 0.1);
    border: 1px solid rgba(43, 127, 255, 0.22);
    color: #A9D4FF;
    font-size: 13px;
  }

  .text-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--cyan);
    font-size: 14px;
    transition: all 0.2s ease;
  }

  .text-link:hover {
    color: #fff;
  }

  .empty-state {
    max-width: 720px;
    margin: 0 auto;
    background: rgba(14, 28, 48, 0.72);
    border: 1px solid var(--border);
    border-radius: 28px;
    padding: clamp(40px, 8vw, 80px) clamp(24px, 6vw, 60px);
    text-align: center;
    color: var(--txt2);
    box-shadow: var(--shadow);
  }

  .empty-state .empty-title {
    font-size: clamp(22px, 3vw, 30px);
    font-weight: 700;
    color: #fff;
    margin: 0 0 12px;
  }

  .empty-state p {
    margin: 0 0 22px;
    color: var(--txt2);
  }

  /* 继续阅读 */
  .reading-section {
    padding: 60px 0 40px;
  }

  .section-heading {
    font-size: clamp(24px, 3.4vw, 34px);
    font-weight: 750;
    color: #fff;
    margin: 0 0 10px;
    letter-spacing: -0.01em;
  }

  .section-sub {
    color: var(--txt2);
    font-size: 15px;
    margin: 0 0 30px;
  }

  .related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .related-card {
    display: block;
    background: rgba(14, 28, 48, 0.76);
    border: 1px solid var(--border);
    border-radius: 22px;
    padding: 24px 22px;
    transition: all 0.25s ease;
    min-height: 150px;
  }

  .related-card:hover {
    transform: translateY(-4px);
    border-color: rgba(25, 214, 255, 0.4);
    box-shadow: var(--shadow);
  }

  .related-card .rc-icon {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(25, 214, 255, 0.1);
    border: 1px solid rgba(25, 214, 255, 0.2);
    margin-bottom: 16px;
    color: #19D6FF;
    font-size: 20px;
    font-weight: 700;
  }

  .related-card h3 {
    color: #fff;
    font-size: 18px;
    font-weight: 700;
    margin: 0 0 8px;
    line-height: 1.5;
  }

  .related-card p {
    color: var(--txt2);
    font-size: 14px;
    line-height: 1.7;
    margin: 0;
  }

  .related-card .rc-link {
    margin-top: 16px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    color: var(--cyan);
  }

  .footer {
    background: #04080F;
    border-top: 1px solid rgba(120, 190, 255, 0.12);
    padding-top: 58px;
    margin-top: 40px;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1.35fr 1fr 1fr 0.95fr;
    gap: 38px;
    padding-bottom: 44px;
  }

  .footer h4 {
    color: #fff;
    font-size: 15px;
    font-weight: 650;
    margin: 0 0 15px;
  }

  .footer .footer-link {
    display: block;
    font-size: 14px;
    color: var(--txt2);
    padding: 4px 0;
    transition: color 0.2s ease;
  }

  .footer .footer-link:hover {
    color: #fff;
  }

  .footer-bottom {
    border-top: 1px solid rgba(120, 190, 255, 0.1);
    padding: 22px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    font-size: 13px;
    color: var(--txt3);
  }

  .tag-green {
    background: rgba(24, 242, 201, 0.08);
    border-color: rgba(24, 242, 201, 0.2);
    color: #8FF4E3;
  }

  /* 移动端 */
  @media (max-width: 1024px) {
    .nav-chips {
      max-width: 500px;
    }

    .footer-grid {
      grid-template-columns: 1fr 1fr;
    }
  }

  @media (max-width: 860px) {
    .header-row {
      flex-wrap: wrap;
      gap: 10px;
      padding-top: 12px;
      padding-bottom: 12px;
    }

    .header-row {
      min-height: auto;
    }

    .nav-chips {
      order: 4;
      width: 100%;
      max-width: 100%;
      justify-content: flex-start;
      margin-top: 2px;
      border-radius: 999px;
    }

    .chip-item {
      font-size: 14px;
      padding: 8px 16px;
    }

    .article-panel {
      padding: 24px 20px;
    }
  }

  @media (max-width: 700px) {
    .related-grid {
      grid-template-columns: 1fr;
    }

    .footer-grid {
      grid-template-columns: 1fr;
      gap: 26px;
    }

    .footer-bottom {
      flex-direction: column;
      align-items: flex-start;
    }
  }

  @media (max-width: 560px) {
    .brand .logo-text {
      font-size: 17px;
    }

    .logo-mark {
      width: 30px;
      height: 30px;
      font-size: 17px;
      border-radius: 10px;
    }

    .header-cta .btn-sm {
      padding: 7px 14px;
      font-size: 13px;
    }

    .article-title {
      font-size: 27px;
    }

    .article-wrap {
      padding: 32px 0 50px;
    }

    .reading-section {
      padding: 40px 0 30px;
    }
  }

  @media (prefers-reduced-motion: reduce) {
    * {
      transition-duration: 0.01ms !important;
      animation-duration: 0.01ms !important;
    }
  }

/* roulang page: category2 */
:root {
            --bg-deep: #050A14;
            --bg-sub: #0A1322;
            --bg-card: rgba(14, 28, 48, 0.82);
            --blue-main: #2B7FFF;
            --cyan-bright: #19D6FF;
            --teal-glow: #18F2C9;
            --amber-soft: #FFC978;
            --txt-main: #EDF4FF;
            --txt-secondary: #A3B8D6;
            --txt-muted: #627B9E;
            --border-line: rgba(120, 190, 255, 0.16);
            --cta-gradient: linear-gradient(135deg, #1D9BFF, #21E5CC);
            --cta-glow: 0 0 24px rgba(29, 190, 255, 0.35);
            --radius-lg: 24px;
            --radius-md: 14px;
            --radius-chips: 999px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            background-color: var(--bg-deep);
            color: var(--txt-main);
            line-height: 1.7;
            overflow-x: hidden;
            background-image: radial-gradient(ellipse 60% 40% at 50% -10%, rgba(43, 127, 255, 0.15), transparent 120%), radial-gradient(ellipse 30% 20% at 85% 10%, rgba(25, 214, 255, 0.05), transparent 100%);
        }
        .container-x {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }
        input {
            font-family: inherit;
        }

        /* ===== Header 导航区 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(5, 10, 20, 0.72);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(43, 127, 255, 0.18);
            transition: box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            transition: height 0.3s ease;
            gap: 12px;
        }
        .site-header.scrolled .header-inner {
            height: 60px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            font-size: 20px;
            font-weight: 800;
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        .logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--cta-gradient);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #050A14;
            font-weight: 900;
            font-size: 18px;
            box-shadow: 0 0 16px rgba(29, 190, 255, 0.3);
            flex-shrink: 0;
        }
        .brand .logo-text {
            color: var(--txt-main);
        }
        .brand .logo-text em {
            font-style: normal;
            color: var(--cyan-bright);
        }

        .nav-chips {
            display: flex;
            gap: 6px;
            background: rgba(10, 19, 34, 0.85);
            padding: 5px;
            border-radius: var(--radius-chips);
            border: 1px solid var(--border-line);
            align-items: center;
        }
        .chip-item {
            display: inline-block;
            padding: 8px 18px;
            border-radius: var(--radius-chips);
            font-size: 14px;
            font-weight: 500;
            color: var(--txt-secondary);
            transition: all 0.2s ease;
            white-space: nowrap;
        }
        .chip-item:hover {
            color: #fff;
            background: rgba(43, 127, 255, 0.14);
        }
        .chip-item.active {
            background: linear-gradient(135deg, #1D9BFF, #21E5CC);
            color: #050A14;
            font-weight: 600;
            box-shadow: 0 0 14px rgba(29, 190, 255, 0.3);
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 9px 20px;
            border-radius: var(--radius-chips);
            background: var(--cta-gradient);
            color: #050A14;
            font-size: 14px;
            font-weight: 700;
            box-shadow: var(--cta-glow);
            transition: transform 0.2s ease, box-shadow 0.3s ease;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .header-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 30px rgba(29, 190, 255, 0.55);
        }
        .header-cta:active {
            transform: scale(0.98);
        }
        .header-cta:focus-visible {
            outline: 2px solid var(--cyan-bright);
            outline-offset: 3px;
        }

        .mob-menu-btn {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border-line);
            background: rgba(10, 19, 34, 0.7);
            color: var(--txt-main);
            font-size: 20px;
            flex-shrink: 0;
        }
        .mob-nav {
            display: none;
        }
        .mob-nav.open {
            display: block;
            padding: 10px 20px 16px;
            border-top: 1px solid var(--border-line);
            background: rgba(5, 10, 20, 0.96);
        }
        .mob-nav .chip-item {
            display: block;
            margin-bottom: 6px;
            text-align: center;
            border-radius: 12px;
        }

        .security-bar {
            text-align: center;
            font-size: 12px;
            color: rgba(163, 184, 214, 0.55);
            padding: 6px 16px;
            border-bottom: 1px solid rgba(120, 190, 255, 0.07);
            background: rgba(5, 10, 20, 0.4);
            letter-spacing: 0.02em;
        }

        /* ===== 通用区块辅助 ===== */
        .section-padding {
            padding-top: 88px;
            padding-bottom: 88px;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding-top: 56px;
                padding-bottom: 56px;
            }
        }
        .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: var(--radius-chips);
            border: 1px solid var(--border-line);
            background: rgba(43, 127, 255, 0.1);
            font-size: 12px;
            color: var(--cyan-bright);
            letter-spacing: 0.02em;
        }
        .tag-green {
            border-color: rgba(24, 242, 201, 0.25);
            background: rgba(24, 242, 201, 0.08);
            color: var(--teal-glow);
        }

        /* ===== 分类页1：Hero of Guide ===== */
        .guide-hero {
            position: relative;
            padding: 72px 0 64px;
            overflow: hidden;
        }
        .guide-hero::before {
            content: "";
            position: absolute;
            top: 0;
            left: 50%;
            width: 900px;
            height: 500px;
            background: radial-gradient(ellipse at center, rgba(43, 127, 255, 0.24), rgba(25, 214, 255, 0.06) 55%, transparent 75%);
            transform: translateX(-50%);
            pointer-events: none;
        }
        .guide-hero .bg-texture {
            position: absolute;
            inset: 0;
            background-image: radial-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px);
            background-size: 26px 26px;
            pointer-events: none;
        }
        .guide-hero-grid {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 0.55fr 0.45fr;
            gap: 48px;
            align-items: center;
        }
        .guide-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            letter-spacing: 0.04em;
            padding: 5px 16px;
            border-radius: 999px;
            background: rgba(24, 242, 201, 0.1);
            border: 1px solid rgba(24, 242, 201, 0.3);
            color: var(--teal-glow);
            margin-bottom: 22px;
            font-weight: 500;
        }
        .guide-hero h1 {
            font-size: clamp(32px, 5vw, 50px);
            font-weight: 800;
            line-height: 1.16;
            margin-bottom: 20px;
            letter-spacing: -0.01em;
            color: #fff;
        }
        .guide-hero h1 .hl {
            background: linear-gradient(120deg, #1D9BFF, #18F2C9);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            font-weight: 800;
        }
        .guide-hero .sub-line {
            color: var(--txt-secondary);
            font-size: 15px;
            line-height: 1.9;
            max-width: 520px;
            margin-bottom: 28px;
        }
        .guide-cta-row {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 11px 26px;
            border-radius: 999px;
            background: linear-gradient(135deg, #1D9BFF, #21E5CC);
            color: #050A14;
            font-weight: 700;
            font-size: 15px;
            box-shadow: 0 0 20px rgba(29, 190, 255, 0.38);
            transition: transform 0.2s ease, box-shadow 0.3s ease;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 30px rgba(29, 190, 255, 0.55);
        }
        .btn-primary:active {
            transform: scale(0.98);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--cyan-bright);
            outline-offset: 3px;
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 11px 26px;
            border-radius: 999px;
            background: rgba(14, 28, 48, 0.6);
            border: 1px solid rgba(120, 190, 255, 0.3);
            color: var(--txt-main);
            font-weight: 500;
            font-size: 15px;
            transition: border-color 0.3s, background 0.3s;
        }
        .btn-ghost:hover {
            border-color: rgba(25, 214, 255, 0.8);
            background: rgba(25, 214, 255, 0.08);
        }
        .btn-ghost:focus-visible {
            outline: 2px solid var(--cyan-bright);
            outline-offset: 3px;
        }

        .guide-hero-img-wrap {
            position: relative;
        }
        .guide-hero-img-wrap .glass-frame {
            border-radius: 28px;
            overflow: hidden;
            position: relative;
            aspect-ratio: 4/3;
            background: rgba(10, 19, 34, 0.85);
            border: 1px solid rgba(120, 190, 255, 0.2);
            box-shadow: 0 25px 60px rgba(0, 0, 0, 0.4);
        }
        .guide-hero-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .guide-float-tag {
            position: absolute;
            background: rgba(10, 19, 34, 0.9);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(120, 190, 255, 0.25);
            border-radius: 14px;
            padding: 10px 16px;
            font-size: 12px;
            color: var(--txt-secondary);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
            letter-spacing: 0.02em;
        }
        .guide-float-tag.one {
            top: -14px;
            right: 14px;
            color: var(--teal-glow);
            font-weight: 600;
        }
        .guide-float-tag.two {
            bottom: 16px;
            left: -12px;
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 500;
        }
        .guide-float-tag .fdot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--teal-glow);
            box-shadow: 0 0 8px rgba(24, 242, 201, 0.5);
        }

        /* ===== 快速导航分步区 ===== */
        .steps-band {
            padding: 24px 0 28px;
            position: relative;
            z-index: 2;
        }
        .steps-track {
            background: rgba(10, 19, 34, 0.65);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-lg);
            padding: 18px 24px;
            display: flex;
            justify-content: space-around;
            align-items: center;
            flex-wrap: wrap;
            gap: 14px 20px;
            backdrop-filter: blur(8px);
        }
        .step-point {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .step-circle {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(43, 127, 255, 0.15);
            border: 1px solid rgba(43, 127, 255, 0.45);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            color: var(--cyan-bright);
            flex-shrink: 0;
        }
        .step-point.active .step-circle {
            background: var(--cta-gradient);
            color: #050A14;
            border-color: transparent;
            box-shadow: 0 0 14px rgba(29, 190, 255, 0.32);
        }
        .step-txt {
            font-size: 14px;
            color: var(--txt-secondary);
            white-space: nowrap;
        }
        .step-point.active .step-txt {
            color: #fff;
            font-weight: 600;
        }

        /* ===== 视觉错落内容卡片（暗部） ===== */
        .layout-cards-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            gap: 20px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }
        .layout-cards-header h2 {
            font-size: clamp(24px, 4vw, 32px);
            font-weight: 750;
            letter-spacing: -0.01em;
            line-height: 1.25;
        }
        .layout-cards-header h2 .dot {
            width: 12px;
            height: 12px;
            border-radius: 4px;
            background: var(--cta-gradient);
            display: inline-block;
            margin-right: 10px;
            box-shadow: 0 0 16px rgba(29, 190, 255, 0.5);
        }
        .layout-cards-header p {
            color: var(--txt-secondary);
            font-size: 14px;
            max-width: 450px;
        }

        .stagger-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 20px;
        }
        .card-tile {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-lg);
            padding: 24px;
            position: relative;
            transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
            overflow: hidden;
        }
        .card-tile:hover {
            border-color: rgba(25, 214, 255, 0.4);
            transform: translateY(-4px);
            box-shadow: 0 16px 36px rgba(0, 0, 0, 0.38);
        }
        .tile-wide {
            grid-column: span 7;
        }
        .tile-narrow {
            grid-column: span 5;
        }
        .tile-even {
            grid-column: span 4;
        }
        .tile-3wide {
            grid-column: span 12;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .tile-3wide .sub-tile {
            padding: 18px 0 0;
            border-top: 1px solid var(--border-line);
        }
        .tile-img {
            border-radius: 18px;
            margin-bottom: 16px;
            overflow: hidden;
            aspect-ratio: 16/9;
            background: rgba(10, 19, 34, 0.6);
        }
        .tile-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .tile-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: #fff;
            letter-spacing: 0.01em;
        }
        .tile-desc {
            font-size: 14px;
            line-height: 1.8;
            color: var(--txt-secondary);
        }
        .tile-sub-meta {
            font-size: 12px;
            color: var(--txt-muted);
            margin-top: 14px;
        }
        .tile-sub-meta i {
            color: var(--cyan-bright);
            font-style: normal;
            margin-right: 4px;
        }
        .tile-link-more {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-size: 14px;
            color: var(--cyan-bright);
            margin-top: 14px;
            transition: gap 0.2s;
        }
        .tile-link-more:hover {
            gap: 9px;
            color: var(--teal-glow);
        }
        .num-ghost {
            position: absolute;
            right: 10px;
            bottom: -12px;
            font-size: 82px;
            font-weight: 800;
            color: rgba(43, 127, 255, 0.08);
            line-height: 1;
            pointer-events: none;
            letter-spacing: -0.08em;
        }

        /* 分区标题 */
        .secon-title {
            font-size: clamp(22px, 3.5vw, 32px);
            font-weight: 750;
            line-height: 1.3;
            margin-bottom: 14px;
        }
        .secon-sub {
            color: var(--txt-secondary);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 620px;
        }
        .divider-line {
            height: 1px;
            background: linear-gradient(90deg, rgba(43, 127, 255, 0.35), transparent);
            margin: 44px 0;
            border: none;
        }

        /* 流程分步 */
        .flow-guide {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }
        .flow-step-card {
            background: rgba(10, 19, 34, 0.55);
            border: 1px solid var(--border-line);
            border-radius: 18px;
            padding: 24px 18px 18px;
            text-align: center;
            position: relative;
            transition: background 0.25s, border-color 0.25s;
        }
        .flow-step-card:hover {
            background: rgba(43, 127, 255, 0.08);
            border-color: rgba(25, 214, 255, 0.45);
        }
        .flow-step-num {
            width: 48px;
            height: 48px;
            margin: 0 auto 14px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(43, 127, 255, 0.2), rgba(33, 229, 204, 0.12));
            border: 1px solid rgba(43, 127, 255, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 19px;
            font-weight: 800;
            color: var(--cyan-bright);
            line-height: 1;
        }
        .flow-step-name {
            font-weight: 600;
            font-size: 15px;
            margin-bottom: 8px;
            color: #fff;
        }
        .flow-step-txt {
            font-size: 13px;
            color: var(--txt-secondary);
        }

        /* FAQ 指南专属 */
        .faq-guide {
            max-width: 800px;
            margin: 0 auto;
        }
        .guide-faq-item {
            border-bottom: 1px solid rgba(120, 190, 255, 0.14);
            margin-bottom: 0;
        }
        .guide-faq-item summary {
            list-style: none;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 22px 8px 22px 0;
            font-weight: 600;
            color: #fff;
            font-size: 16px;
        }
        .guide-faq-item summary::-webkit-details-marker {
            display: none;
        }
        .guide-faq-item summary::after {
            content: "+";
            font-size: 22px;
            font-weight: 300;
            margin-right: 10px;
            color: var(--cyan-bright);
            transition: transform 0.25s;
        }
        .guide-faq-item[open] summary::after {
            content: "−";
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 60px 20px 0;
            color: var(--txt-secondary);
            font-size: 14px;
            line-height: 1.9;
        }

        /* ===== CTA Band ===== */
        .cta-band {
            position: relative;
            border-radius: 28px;
            padding: 52px 48px;
            background: radial-gradient(ellipse 60% 90% at 15% 50%, rgba(43, 127, 255, 0.28), transparent), radial-gradient(ellipse 50% 70% at 85% 40%, rgba(24, 242, 201, 0.14), transparent), rgba(10, 19, 34, 0.85);
            border: 1px solid rgba(120, 190, 255, 0.22);
            backdrop-filter: blur(12px);
            overflow: hidden;
        }
        .cta-band::before {
            content: "";
            position: absolute;
            top: -50%;
            right: -10%;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(43, 127, 255, 0.22), transparent 70%);
            pointer-events: none;
        }
        .cta-band h2 {
            font-size: clamp(22px, 3vw, 30px);
            font-weight: 750;
            margin-bottom: 10px;
            letter-spacing: -0.01em;
            position: relative;
            z-index: 1;
        }
        .cta-band p {
            color: var(--txt-secondary);
            font-size: 15px;
            max-width: 520px;
            margin-bottom: 22px;
            line-height: 1.8;
            position: relative;
            z-index: 1;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            position: relative;
            z-index: 1;
        }

        /* ===== Footer 公共 ===== */
        .footer {
            background: rgba(5, 10, 20, 0.9);
            border-top: 1px solid rgba(120, 190, 255, 0.16);
            padding-top: 72px;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            padding-bottom: 48px;
        }
        .footer-grid h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 18px;
        }
        .footer-link {
            display: block;
            font-size: 14px;
            color: var(--txt-secondary);
            padding: 7px 0;
            transition: color 0.2s;
        }
        .footer-link:hover {
            color: var(--teal-glow);
        }
        .footer-bottom {
            border-top: 1px solid rgba(120, 190, 255, 0.12);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--txt-muted);
        }
        .footer-bottom span {
            line-height: 1.5;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .guide-hero-grid {
                grid-template-columns: 1fr 0.7;
                gap: 30px;
            }
            .stagger-grid {
                grid-template-columns: repeat(6, 1fr);
            }
            .tile-wide {
                grid-column: span 6;
            }
            .tile-narrow {
                grid-column: span 6;
            }
            .tile-even {
                grid-column: span 3;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .flow-guide {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                height: 64px;
            }
            .nav-chips {
                display: none;
            }
            .header-cta {
                display: inline-flex;
                font-size: 13px;
                padding: 8px 16px;
            }
            .mob-menu-btn {
                display: inline-flex;
            }
            .guide-hero {
                padding: 40px 0 48px;
            }
            .guide-hero-grid {
                grid-template-columns: 1fr;
            }
            .guide-hero-img-wrap {
                margin-top: 12px;
            }
            .tile-3wide {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .steps-track {
                align-items: flex-start;
                flex-direction: column;
                padding: 16px 20px;
            }
            .flow-guide {
                grid-template-columns: 1fr;
            }
            .cta-band {
                padding: 36px 24px;
            }
            .stagger-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .tile-wide,
            .tile-narrow,
            .tile-even {
                grid-column: span 1;
            }
            .brand .logo-text {
                font-size: 17px;
            }
            .header-cta {
                padding: 8px 13px;
            }
        }

/* roulang page: category3 */
:root {
            --bg-page: #050A14;
            --bg-sub: #0A1322;
            --bg-card: rgba(14, 28, 48, 0.82);
            --blue: #2B7FFF;
            --cyan: #19D6FF;
            --green: #18F2C9;
            --amber: #FFC978;
            --txt-head: #EDF4FF;
            --txt-body: #C7D6EE;
            --txt2: #A3B8D6;
            --txt3: #627B9E;
            --line: rgba(120, 190, 255, 0.14);
            --line2: rgba(120, 190, 255, 0.32);
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 12px;
            --shadow-card: 0 12px 32px rgba(0, 0, 0, 0.28);
            --grad-main: linear-gradient(135deg, #1D9BFF 0%, #21E5CC 100%);
            --glow: 0 0 24px rgba(29, 190, 255, 0.32);
            --glow-green: 0 0 20px rgba(24, 242, 201, 0.18);
            --container: 1280px;
            --spacer: 96px;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            background-color: var(--bg-page);
            background-image: radial-gradient(ellipse 60% 40% at 30% 0%, rgba(24, 128, 255, 0.10) 0%, transparent 100%), radial-gradient(ellipse 50% 30% at 80% 10%, rgba(24, 242, 201, 0.06) 0%, transparent 100%);
            color: var(--txt-body);
            font-size: 16px;
            line-height: 1.75;
            overflow-x: hidden;
        }
        body::before {
            content: "";
            position: fixed;
            inset: 0;
            background-image: linear-gradient(rgba(43, 127, 255, 0.035) 1px, transparent 1px), linear-gradient(90deg, rgba(43, 127, 255, 0.035) 1px, transparent 1px);
            background-size: 52px 52px;
            pointer-events: none;
            z-index: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        ul, ol {
            list-style: none;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button, input {
            font-family: inherit;
        }
        .container-x {
            max-width: var(--container);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            width: 100%;
        }
        /* 安全提示 */
        .notice-bar {
            background: rgba(5, 10, 20, 0.85);
            border-bottom: 1px solid rgba(120, 190, 255, 0.08);
            padding: 6px 16px;
            text-align: center;
            font-size: 12px;
            color: var(--txt3);
            letter-spacing: 0.03em;
        }
        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(20px);
            background: rgba(5, 10, 20, 0.78);
            border-bottom: 1px solid rgba(43, 127, 255, 0.22);
            transition: all .3s ease;
        }
        .site-header.scrolled {
            background: rgba(5, 10, 20, 0.9);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding-top: 14px;
            padding-bottom: 14px;
            transition: padding .3s;
        }
        .site-header.scrolled .header-inner {
            padding-top: 8px;
            padding-bottom: 8px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-mark {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            background: var(--grad-main);
            border-radius: 12px;
            font-weight: 900;
            font-size: 24px;
            color: #0a1020;
            box-shadow: 0 0 20px rgba(29, 190, 255, 0.45);
            font-family: "DIN Alternate", "Bahnschrift", "Arial Narrow", sans-serif;
        }
        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--txt-head);
            letter-spacing: 0;
            white-space: nowrap;
        }
        .logo-text em {
            font-style: normal;
            background: linear-gradient(90deg, #55b7ff, #22e9c8);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .nav-wrap {
            display: flex;
            justify-content: center;
            flex: 1;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .nav-wrap::-webkit-scrollbar {
            display: none;
        }
        .nav-chips {
            display: flex;
            gap: 6px;
            background: rgba(10, 19, 34, 0.7);
            border: 1px solid var(--line);
            padding: 5px;
            border-radius: 999px;
            backdrop-filter: blur(10px);
        }
        .chip-item {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 7px 22px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--txt2);
            white-space: nowrap;
            transition: all 0.25s ease;
            border: 1px solid transparent;
            background: transparent;
        }
        .chip-item:hover {
            color: var(--txt-head);
            background: rgba(43, 127, 255, 0.12);
        }
        .chip-item.active {
            background: var(--grad-main);
            color: #05101f;
            font-weight: 700;
            box-shadow: var(--glow);
            border-color: transparent;
        }
        .btn-primary-sm {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--grad-main);
            color: #071222;
            font-weight: 700;
            font-size: 15px;
            padding: 10px 24px;
            border-radius: 999px;
            box-shadow: var(--glow);
            border: none;
            cursor: pointer;
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .btn-primary-sm:hover {
            transform: translateY(-2px);
            filter: brightness(1.08);
            box-shadow: 0 6px 28px rgba(29, 190, 255, 0.45);
        }
        .btn-primary-sm:active {
            transform: scale(0.97);
        }
        .header-cta {
            flex-shrink: 0;
        }
        /* Hero */
        .page-hero {
            position: relative;
            padding: 90px 0 70px;
            overflow: hidden;
            border-bottom: 1px solid var(--line);
        }
        .page-hero .bg-img {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            z-index: 0;
        }
        .page-hero .bg-img::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(5, 10, 20, 0.94) 30%, rgba(5, 10, 20, 0.65) 70%, rgba(5, 10, 20, 0.45) 100%);
        }
        .page-hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 1px solid rgba(24, 242, 201, 0.3);
            background: rgba(24, 242, 201, 0.08);
            color: var(--green);
            border-radius: 999px;
            padding: 5px 16px;
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 18px;
        }
        .page-hero h1 {
            font-size: clamp(34px, 5vw, 52px);
            font-weight: 800;
            color: var(--txt-head);
            line-height: 1.25;
            margin-bottom: 18px;
            letter-spacing: -0.01em;
        }
        .page-hero h1 .hc {
            background: linear-gradient(135deg, #55b7ff, #18f2c9);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .hero-desc {
            font-size: 16px;
            color: var(--txt2);
            max-width: 680px;
            line-height: 1.9;
            margin-bottom: 24px;
        }
        .hero-topics {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 20px;
        }
        .hero-topic {
            display: inline-block;
            border: 1px solid var(--line);
            background: rgba(10, 19, 34, 0.6);
            color: var(--txt2);
            padding: 5px 15px;
            border-radius: 999px;
            font-size: 13px;
            backdrop-filter: blur(6px);
        }
        /* 横向滚动区 */
        .carousel-wrap {
            position: relative;
            padding: 78px 0 88px;
        }
        .carousel-scrollx {
            display: grid;
            grid-auto-flow: column;
            grid-auto-columns: 360px;
            gap: 22px;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            padding-bottom: 10px;
            scrollbar-width: thin;
            scrollbar-color: rgba(43, 127, 255, 0.4) transparent;
        }
        .carousel-scrollx::-webkit-scrollbar {
            height: 4px;
            background: rgba(10, 19, 34, 0.5);
            border-radius: 4px;
        }
        .carousel-scrollx::-webkit-scrollbar-thumb {
            background: linear-gradient(90deg, var(--blue), var(--green));
            border-radius: 4px;
        }
        .activity-card {
            scroll-snap-align: start;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--line);
            overflow: hidden;
            transition: all 0.3s ease;
            backdrop-filter: blur(8px);
            display: flex;
            flex-direction: column;
        }
        .activity-card:hover {
            border-color: var(--line2);
            box-shadow: var(--shadow-card);
            transform: translateY(-6px);
        }
        .ac-thumb {
            position: relative;
            height: 180px;
            overflow: hidden;
        }
        .ac-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .ac-thumb::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(5, 10, 20, 0.55) 0%, transparent 55%);
        }
        .ac-status {
            position: absolute;
            top: 16px;
            left: 16px;
            z-index: 2;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
        }
        .status-hot {
            background: rgba(255, 201, 120, 0.16);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 201, 120, 0.3);
            color: var(--amber);
        }
        .status-live {
            background: rgba(24, 242, 201, 0.15);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(24, 242, 201, 0.3);
            color: var(--green);
        }
        .status-end {
            background: rgba(98, 123, 158, 0.2);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(98, 123, 158, 0.3);
            color: var(--txt3);
        }
        .ac-body {
            padding: 22px 22px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .ac-title {
            font-size: 18px;
            color: var(--txt-head);
            font-weight: 650;
            line-height: 1.5;
            margin-bottom: 8px;
        }
        .ac-desc {
            font-size: 14px;
            color: var(--txt2);
            line-height: 1.8;
            flex: 1;
        }
        .ac-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid rgba(120, 190, 255, 0.1);
            padding-top: 14px;
            margin-top: 16px;
            font-size: 13px;
            color: var(--txt3);
        }
        .ac-link {
            color: var(--cyan);
            font-weight: 500;
            transition: color 0.2s;
        }
        .ac-link:hover {
            color: var(--green);
        }
        .ac-link .fa-arrow-right {
            margin-left: 4px;
            font-size: 12px;
        }
        /* 时间线 */
        .timeline-band {
            padding: 40px 0 80px;
        }
        .sec-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            margin-bottom: 42px;
        }
        .sec-tag {
            display: inline-block;
            font-size: 14px;
            color: var(--cyan);
            margin-bottom: 10px;
            font-weight: 600;
        }
        .sec-title {
            font-size: clamp(26px, 4vw, 38px);
            font-weight: 800;
            color: var(--txt-head);
            line-height: 1.3;
            margin-bottom: 6px;
        }
        .sec-sub {
            color: var(--txt2);
            font-size: 15px;
        }
        .timeline {
            position: relative;
            margin: 0;
            padding-left: 0;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 1px;
            background: linear-gradient(to bottom, rgba(43, 127, 255, 0.5), rgba(24, 242, 201, 0.4) 60%, transparent);
        }
        .timeline-item {
            position: relative;
            padding-left: 44px;
            padding-bottom: 42px;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-dot {
            position: absolute;
            left: -10px;
            top: 2px;
            width: 21px;
            height: 21px;
            border-radius: 50%;
            background: var(--bg-page);
            border: 2px solid var(--cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 14px rgba(25, 214, 255, 0.4);
        }
        .timeline-dot::after {
            content: '';
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--cyan);
        }
        .tl-card {
            background: var(--bg-card);
            border: 1px solid var(--line);
            border-radius: 18px;
            padding: 24px 28px;
            transition: all 0.3s ease;
            backdrop-filter: blur(6px);
        }
        .tl-card:hover {
            border-color: rgba(120, 190, 255, 0.34);
            box-shadow: var(--shadow-card);
        }
        .tl-date {
            font-size: 13px;
            color: var(--amber);
            font-weight: 600;
            letter-spacing: 0.02em;
            margin-bottom: 8px;
            font-family: "DIN Alternate", "Bahnschrift", sans-serif;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .tl-date .fa-regular {
            font-size: 12px;
            opacity: 0.8;
        }
        .tl-title {
            font-size: 17px;
            font-weight: 650;
            color: var(--txt-head);
            margin-bottom: 6px;
            line-height: 1.5;
        }
        .tl-text {
            font-size: 14px;
            color: var(--txt2);
            line-height: 1.8;
            max-width: 680px;
        }
        .tl-link {
            display: inline-block;
            margin-top: 10px;
            color: var(--cyan);
            font-size: 14px;
            font-weight: 500;
            transition: all .2s;
        }
        .tl-link:hover {
            color: var(--green);
        }
        .tl-link .fa-arrow-right {
            font-size: 12px;
            margin-left: 5px;
        }
        /* 资讯预览交叉模块 */
        .news-preview-band {
            background: rgba(10, 19, 34, 0.4);
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
            padding: 80px 0;
        }
        .news-preview-grid-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .np-card {
            background: var(--bg-card);
            border: 1px solid var(--line);
            border-radius: 20px;
            padding: 28px;
            transition: all .3s ease;
        }
        .np-card:hover {
            transform: translateY(-4px);
            border-color: var(--line2);
            box-shadow: var(--shadow-card);
        }
        .np-card .np-label {
            display: inline-block;
            background: rgba(43, 127, 255, 0.14);
            color: var(--cyan);
            font-size: 13px;
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 14px;
        }
        .np-card h3 {
            font-size: 20px;
            color: var(--txt-head);
            font-weight: 650;
            line-height: 1.5;
            margin-bottom: 10px;
        }
        .np-card .np-apart {
            display: flex;
            align-items: center;
            color: var(--txt2);
            font-size: 14px;
            gap: 16px;
            margin-bottom: 14px;
        }
        /* CTA */
        .cta-band {
            padding: 90px 0;
        }
        .cta-box {
            position: relative;
            background: rgba(14, 28, 48, 0.65);
            border: 1px solid rgba(43, 127, 255, 0.3);
            border-radius: 28px;
            padding: 60px 64px;
            text-align: center;
            overflow: hidden;
            backdrop-filter: blur(12px);
        }
        .cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse 50% 60% at 50% 0%, rgba(25, 106, 255, 0.16) 0%, transparent 100%);
            pointer-events: none;
        }
        .cta-box h2 {
            font-size: clamp(24px, 3.6vw, 36px);
            color: var(--txt-head);
            font-weight: 800;
            position: relative;
            z-index: 1;
        }
        .cta-box p {
            position: relative;
            color: var(--txt2);
            max-width: 560px;
            margin: 12px auto 26px;
            font-size: 15px;
        }
        .btn-primary-lg {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--grad-main);
            color: #061022;
            font-size: 17px;
            font-weight: 700;
            padding: 14px 42px;
            border-radius: 999px;
            box-shadow: var(--glow);
            border: none;
            cursor: pointer;
            transition: all 0.25s ease;
            position: relative;
            z-index: 1;
        }
        .btn-primary-lg:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 40px rgba(26, 200, 255, 0.5);
            filter: brightness(1.08);
        }
        .btn-primary-lg:active {
            transform: scale(0.97);
        }
        /* 页脚 */
        .footer {
            background: rgba(5, 10, 20, 0.97);
            border-top: 1px solid rgba(55, 100, 255, 0.15);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 48px;
        }
        .footer h4 {
            color: var(--txt-head);
            font-size: 16px;
            font-weight: 650;
            margin-bottom: 18px;
        }
        .footer-link {
            display: block;
            padding: 4px 0;
            color: var(--txt2);
            font-size: 14px;
            transition: all 0.2s;
        }
        .footer-link:hover {
            color: var(--cyan);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            border-top: 1px solid rgba(120, 190, 255, 0.08);
            padding: 20px 0 24px;
            color: var(--txt3);
            font-size: 13px;
        }
        .tag {
            font-size: 13px;
            border: 1px solid var(--line);
            border-radius: 999px;
            padding: 4px 14px;
            color: var(--txt2);
        }
        .tag-green {
            border-color: rgba(24, 242, 201, 0.3);
            color: var(--green);
        }
        .bg-img-card {
            position: relative;
            overflow: hidden;
        }
        .bg-img-card>img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
        }
        .glass-placeholder {
            background: linear-gradient(145deg, rgba(43, 127, 255, 0.08), rgba(24, 242, 201, 0.05));
            border: 1px solid var(--line);
        }
        /* 系统特性卡 */
        .feature-strip {
            padding: 70px 0 96px;
        }
        .ft-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .ft-card {
            background: var(--bg-card);
            border: 1px solid var(--line);
            border-radius: 20px;
            padding: 26px 22px;
            transition: all .3s ease;
        }
        .ft-card:hover {
            border-color: rgba(120, 190, 255, 0.32);
            transform: translateY(-4px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
        }
        .ft-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 21px;
            margin-bottom: 16px;
            background: linear-gradient(135deg, rgba(29, 155, 255, 0.14), rgba(24, 242, 201, 0.10));
            border: 1px solid rgba(43, 127, 255, 0.2);
            color: var(--cyan);
        }
        .ft-title {
            font-size: 16px;
            font-weight: 650;
            color: var(--txt-head);
            margin-bottom: 6px;
        }
        .ft-text {
            font-size: 13px;
            color: var(--txt2);
            line-height: 1.7;
        }
        /* FAQ面板 */
        .faq-panel {
            max-width: 860px;
            margin: 0 auto;
        }
        details.faq-item {
            background: var(--bg-card);
            border: 1px solid var(--line);
            border-radius: 16px;
            margin-bottom: 12px;
            padding: 4px 8px;
            overflow: hidden;
        }
        details.faq-item:hover {
            border-color: rgba(120, 190, 255, 0.25);
        }
        .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 16px 18px;
            cursor: pointer;
            color: var(--txt-head);
            font-size: 16px;
            font-weight: 600;
        }
        .faq-icon {
            width: 30px;
            height: 30px;
            border: 1px solid var(--line2);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--cyan);
            transition: all .2s;
            flex-shrink: 0;
        }
        details[open] .faq-icon {
            background: rgba(43, 127, 255, 0.12);
            transform: rotate(135deg);
        }
        .faq-a {
            padding: 0 20px 18px;
            color: var(--txt2);
            font-size: 14px;
            line-height: 1.9;
        }
        .btn-scroll {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: rgba(10, 19, 34, 0.7);
            border: 1px solid var(--line2);
            width: 46px;
            height: 46px;
            border-radius: 50%;
            z-index: 60;
            color: var(--cyan);
            cursor: pointer;
            backdrop-filter: blur(10px);
            display: none;
        }
        /* 响应式 */
        @media screen and (max-width: 1024px) {
            :root {
                --spacer: 70px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .ft-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-preview-grid-grid {
                grid-template-columns: 1fr;
            }
        }
        @media screen and (max-width: 768px) {
            .header-cta .btn-primary-sm {
                padding: 8px 14px;
                font-size: 14px;
            }
            .logo-text {
                font-size: 13px;
            }
            .brand {
                gap: 6px;
            }
            .page-hero {
                padding: 56px 0 50px;
            }
            .page-hero h1 {
                font-size: 32px;
            }
            .carousel-scrollx {
                grid-auto-columns: 300px;
            }
            .sec-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .cta-box {
                padding: 36px 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .timeline-item {
                padding-left: 36px;
            }
        }
        @media screen and (max-width: 520px) {
            .header-inner {
                flex-wrap: wrap;
                row-gap: 8px;
            }
            .nav-wrap {
                order: 4;
                flex-basis: 100%;
            }
            .nav-chips {
                justify-content: flex-start;
                padding: 4px;
                width: 100%;
                overflow-x: auto;
            }
            .chip-item {
                padding: 6px 18px;
                font-size: 14px;
                flex-shrink: 0;
            }
            .header-cta {
                display: none;
            }
            .ft-grid {
                grid-template-columns: 1fr;
            }
            .hero-topics {
                gap: 6px;
            }
            .timeline-item {
                padding-left: 30px;
            }
        }