/* roulang page: index */
:root {
  --color-primary: #10D4A3;
  --color-secondary: #F09A2E;
  --color-bg: #0A0E17;
  --color-bg-soft: #111A28;
  --color-bg-card: rgba(22, 34, 52, 0.76);
  --color-text: #E9F2F5;
  --color-text-muted: #8FA3B4;
  --color-line: rgba(165, 231, 219, 0.16);
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
  --font-display: "DIN Alternate", "Roboto Condensed", "PingFang SC", "HarmonyOS Sans SC", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
button { font-family: inherit; }
::selection { background: rgba(16, 212, 163, 0.28); }
.container-x { width: 100%; max-width: 1200px; margin: 0 auto; padding-left: 1.25rem; padding-right: 1.25rem; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .12em;
  color: var(--color-primary);
  text-transform: uppercase;
}
.eyebrow::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 99px;
}
.text-muted-c { color: var(--color-text-muted); }
.text-primary-c { color: var(--color-primary); }
.text-secondary-c { color: var(--color-secondary); }

.glass-card {
  background: var(--color-bg-card);
  border: 1px solid rgba(165, 231, 219, 0.14);
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.22), inset 0 0 0 1px rgba(255, 255, 255, 0.04);
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease, background .3s ease;
}
.hover-lift:hover {
  transform: translateY(-4px);
  border-color: rgba(16, 212, 163, 0.42);
  box-shadow: 0 16px 50px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(16, 212, 163, 0.22);
}

.btn-glow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  min-height: 44px;
  padding: .85rem 1.8rem;
  border-radius: 999px;
  border: 0;
  cursor: pointer;
  font-size: .95rem;
  font-weight: 700;
  color: #06231B;
  background: linear-gradient(135deg, #10D4A3, #0BB28A);
  box-shadow: 0 0 20px rgba(16, 212, 163, .3), inset 0 1px 0 rgba(255, 255, 255, .22);
  transition: transform .25s ease, box-shadow .25s ease, filter .25s ease;
}
.btn-glow:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 28px rgba(16, 212, 163, .52), inset 0 1px 0 rgba(255, 255, 255, .25);
  filter: brightness(1.04);
}
.btn-glow:active { transform: translateY(1px); box-shadow: 0 0 14px rgba(16, 212, 163, .36); }
.btn-glow.btn-sm { min-height: 38px; padding: .4rem 1.1rem; font-size: .85rem; }

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  min-height: 44px;
  padding: .85rem 1.6rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, .2);
  color: rgba(233, 242, 245, .85);
  font-size: .95rem;
  font-weight: 500;
  background: transparent;
  transition: border-color .25s ease, color .25s ease, transform .25s ease, background .25s ease;
}
.btn-outline:hover { border-color: rgba(16, 212, 163, .6); color: var(--color-primary); transform: translateY(-2px); background: rgba(255, 255, 255, .03); }

.text-link {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  color: var(--color-text-muted);
  font-weight: 600;
  font-size: .92rem;
  transition: color .2s ease, gap .2s ease;
}
.text-link:hover { color: var(--color-primary); gap: .7rem; }

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .45rem .95rem;
  border-radius: 999px;
  font-size: .9rem;
  font-weight: 500;
  color: rgba(233, 242, 245, .72);
  transition: color .22s ease, background .22s ease;
}
.nav-link:hover { color: #fff; background: rgba(255, 255, 255, .06); }
.nav-link.active { color: var(--color-primary); }

.chip-pill {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .3rem .9rem;
  border-radius: 999px;
  font-size: .78rem;
  font-weight: 600;
  background: rgba(16, 212, 163, .1);
  color: var(--color-primary);
  white-space: nowrap;
}
.chip-warm {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .3rem .85rem;
  border-radius: 999px;
  font-size: .78rem;
  font-weight: 600;
  background: rgba(240, 154, 46, .13);
  color: var(--color-secondary);
  white-space: nowrap;
}

#siteHeader { transition: box-shadow .3s ease, border-color .3s ease; }
#siteHeader.scrolled { box-shadow: 0 12px 30px rgba(0, 0, 0, .28); }

.menu-btn { position: relative; }
.menu-btn .menu-line {
  position: absolute;
  left: 13px;
  right: 13px;
  top: 47%;
  height: 2px;
  border-radius: 99px;
  background: currentColor;
  transition: transform .3s ease, top .3s ease, opacity .3s ease;
}
.menu-btn .menu-line.line-first { top: 38%; }
.menu-btn .menu-line.line-last { top: 57%; }
.menu-btn.active .menu-line.line-first { top: 50%; transform: rotate(45deg); }
.menu-btn.active .menu-line.line-center { opacity: 0; }
.menu-btn.active .menu-line.line-last { top: 50%; transform: rotate(-45deg); }

#mobileDrawer {
  position: fixed;
  inset: 0;
  z-index: 90;
  visibility: hidden;
  opacity: 0;
  transition: opacity .32s ease, visibility .32s ease;
}
#mobileDrawer.open { visibility: visible; opacity: 1; }
.drawer-back {
  position: absolute;
  inset: 0;
  background: rgba(7, 11, 18, .78);
  backdrop-filter: blur(14px);
}
.drawer-panel {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: min(88vw, 420px);
  background: rgba(17, 26, 40, .98);
  border-right: 1px solid var(--color-line);
  transform: translateX(-100%);
  transition: transform .36s cubic-bezier(.22, .9, .28, 1);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
}
#mobileDrawer.open .drawer-panel { transform: none; }
.drawer-nav .drawer-link {
  display: flex;
  align-items: center;
  min-height: 58px;
  padding: 0 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, .05);
  font-size: 1rem;
  font-weight: 600;
  transition: background .2s ease, color .2s ease;
}
.drawer-nav .drawer-link:hover { background: rgba(255, 255, 255, .04); color: var(--color-primary); }

.hero-card-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 2.3rem;
  line-height: 1.1;
  letter-spacing: .02em;
  color: #fff;
}
.ring-demo {
  width: 112px;
  height: 112px;
  border-radius: 50%;
  background: conic-gradient(var(--color-primary) 0% 44%, rgba(16, 212, 163, .18) 44% 68%, var(--color-secondary) 68% 84%, rgba(255,255,255,.16) 84% 100%);
  position: relative;
  flex: 0 0 auto;
}
.ring-demo::after {
  content: "69%";
  position: absolute;
  inset: 14px;
  background: #0E1724;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--color-text);
}

.faq-item {
  background: rgba(255, 255, 255, .025);
  border: 1px solid rgba(255, 255, 255, .07);
  border-radius: 18px;
  padding: .2rem;
  transition: border-color .3s ease, background .3s ease;
}
.faq-item[open] {
  background: rgba(16, 212, 163, .04);
  border-color: rgba(16, 212, 163, .28);
}
.faq-item summary {
  list-style-type: none;
  cursor: pointer;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.25rem 1.4rem;
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-text);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .faq-num {
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(16, 212, 163, .12);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .78rem;
  font-weight: 700;
}
.faq-item .faq-content { padding: .2rem 1.4rem 1.35rem 4rem; color: var(--color-text-muted); font-size: .95rem; }

.news-card {
  overflow: hidden;
  border-radius: 18px;
  background: rgba(255, 255, 255, .03);
  border: 1px solid rgba(255, 255, 255, .07);
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.news-card:hover {
  transform: translateY(-4px);
  border-color: rgba(16, 212, 163, .38);
  box-shadow: 0 14px 34px rgba(0, 0, 0, .28);
}
.prose-custom { max-width: 760px; }
@media (min-width: 768px) {
  .right-dash-offset { transform: translateY(30px); }
}
@media (max-width: 640px) {
  .faq-item .faq-content { padding-left: 1.4rem; }
}
.float-tool {
  position: fixed;
  right: 1.15rem;
  bottom: 1.15rem;
  z-index: 70;
  height: 3.4rem;
  display: flex;
  align-items: center;
  padding: 0 1.4rem;
  border-radius: 999px;
  color: #06231B;
  font-weight: 700;
  font-size: .9rem;
  background: linear-gradient(135deg, #10D4A3, #0BB28A);
  box-shadow: 0 0 22px rgba(16, 212, 163, .4);
  transition: transform .25s ease, box-shadow .25s ease;
}
.float-tool:hover { transform: translateY(-3px); box-shadow: 0 0 30px rgba(16, 212, 163, .6); }
@media (max-width: 639px) {
  .float-tool { width: 56px; padding: 0; justify-content: center; border-radius: 50%; }
  .float-tool .full-text { display: none; }
}
@media (min-width: 640px) {
  .float-tool .short-text { display: none; }
}
.feature-row-img {
  position: relative;
  overflow: hidden;
  background: rgba(17, 26, 40, .8);
  border: 1px solid rgba(165, 231, 219, .16);
  border-radius: 28px;
}
.text-badge {
  display: inline-block;
  background: rgba(16,212,163,.12);
  color: var(--color-primary);
  padding: .25rem .9rem;
  border-radius: 999px;
  font-size: .8rem;
  font-weight: 600;
  margin-right: .5rem;
  margin-bottom: .4rem;
}
footer a { transition: color .2s ease, opacity .2s ease; }
footer a:hover { color: var(--color-primary); opacity: 1; }
:focus-visible { outline: 2px solid rgba(16, 212, 163, .8); outline-offset: 3px; }
@media (max-width: 1023px) {
  .desktop-only-nav { display: none; }
}

/* roulang page: category1 */
:root {
        --primary: #10D4A3;
        --primary-deep: #0BB28A;
        --secondary: #F09A2E;
        --bg: #0A0E17;
        --bg-soft: #111A28;
        --bg-card: rgba(22, 34, 52, 0.76);
        --text: #E9F2F5;
        --text-muted: #8FA3B4;
        --line: rgba(165, 231, 219, 0.16);
        --radius-lg: 22px;
        --radius-md: 14px;
        --radius-sm: 8px;
        --shadow-card: 0 12px 40px rgba(0, 0, 0, 0.26), 0 0 0 1px rgba(255, 255, 255, 0.04) inset;
        --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
        --font-display: "DIN Alternate", "Roboto Condensed", "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;
    }

    * {
        box-sizing: border-box;
    }

    html {
        scroll-behavior: smooth;
        scroll-padding-top: 96px;
    }

    body {
        margin: 0;
        font-family: var(--font-sans);
        font-size: 16px;
        line-height: 1.75;
        color: var(--text);
        background:
            radial-gradient(1100px 480px at 88% -6%, rgba(16, 212, 163, 0.09), transparent 60%),
            radial-gradient(900px 620px at -12% 28%, rgba(240, 154, 46, 0.05), transparent 55%),
            var(--bg);
        overflow-x: hidden;
        -webkit-font-smoothing: antialiased;
    }

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

    a,
    button {
        transition: all 0.25s ease;
        font-family: inherit;
    }

    a {
        color: var(--text);
        text-decoration: none;
    }

    button {
        cursor: pointer;
    }

    a:focus-visible,
    button:focus-visible {
        outline: 2px solid var(--primary);
        outline-offset: 3px;
        border-radius: 6px;
    }

    h1,
    h2,
    h3,
    h4 {
        font-family: var(--font-display);
        font-weight: 800;
        line-height: 1.3;
        letter-spacing: -0.01em;
    }

    .container-x {
        max-width: 1280px;
        margin: 0 auto;
        padding-left: 1.25rem;
        padding-right: 1.25rem;
    }

    .text-display {
        font-family: var(--font-display);
        font-size: clamp(2.6rem, 6.2vw, 4.6rem);
        font-weight: 800;
        line-height: 1.15;
    }

    .section-title {
        font-size: clamp(2rem, 4vw, 3rem);
        font-weight: 800;
        line-height: 1.25;
    }

    .text-sub {
        color: var(--text-muted);
        font-size: 1.05rem;
    }

    .text-badge {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        background: rgba(16, 212, 163, 0.10);
        border: 1px solid rgba(16, 212, 163, 0.18);
        color: #A9F2DF;
        border-radius: 999px;
        padding: 5px 10px;
        font-size: 12px;
        white-space: nowrap;
    }

    .chip-secondary {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        background: rgba(240, 154, 46, 0.1);
        border: 1px solid rgba(240, 154, 46, 0.22);
        color: #FBC78C;
        border-radius: 999px;
        padding: 5px 10px;
        font-size: 12px;
    }

    /* 玻璃卡片 */
    .glass-card {
        background: rgba(255, 255, 255, 0.045);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border: 1px solid rgba(255, 255, 255, 0.08);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-card);
        transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    }

    .glass-card:hover {
        transform: translateY(-4px);
        border-color: rgba(16, 212, 163, 0.38);
        box-shadow: 0 18px 44px -12px rgba(0, 0, 0, 0.38), 0 0 0 1px rgba(16, 212, 163, 0.18) inset, 0 12px 38px -12px rgba(16, 212, 163, 0.32);
    }

    /* 发光主按钮 */
    .btn-glow {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        background: linear-gradient(135deg, #10D4A3, #0BB28A);
        color: #06231B;
        border-radius: 999px;
        font-weight: 700;
        padding: 10px 20px;
        font-size: 14px;
        border: none;
        box-shadow: 0 0 18px rgba(16, 212, 163, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.28);
        line-height: 1.2;
        white-space: nowrap;
    }

    .btn-glow:hover {
        transform: translateY(-2px);
        background: linear-gradient(135deg, #20E0B0, #0BB28A);
        box-shadow: 0 8px 28px rgba(16, 212, 163, 0.38), inset 0 1px 0 rgba(255, 255, 255, 0.34);
        color: #06231B;
    }

    .btn-glow.active {
        transform: translateY(0);
        box-shadow: 0 4px 16px rgba(16, 212, 163, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.3);
    }

    .btn-sm {
        padding: 8px 15px;
        font-size: 13px;
        min-height: 38px;
    }

    .btn-outline {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        background: rgba(255, 255, 255, 0.02);
        border: 1px solid rgba(255, 255, 255, 0.18);
        color: rgba(255, 255, 255, 0.86);
        border-radius: 999px;
        padding: 11px 20px;
        font-weight: 600;
        font-size: 14px;
        min-height: 44px;
        line-height: 1.2;
        white-space: nowrap;
    }

    .btn-outline:hover {
        border-color: rgba(16, 212, 163, 0.65);
        color: var(--primary);
        transform: translateY(-1px);
    }

    /* 导航 */
    .nav-link {
        color: #93A7B7;
        font-size: 14px;
        font-weight: 500;
        padding: 8px 14px;
        border-radius: 10px;
        position: relative;
        letter-spacing: 0.02em;
    }

    .nav-link:hover {
        color: #FFFFFF;
        background: rgba(255, 255, 255, 0.04);
    }

    .nav-link.active {
        color: #FFFFFF;
    }

    .nav-link.active::after {
        content: "";
        position: absolute;
        left: 14px;
        right: 14px;
        bottom: 1px;
        height: 2px;
        border-radius: 4px;
        background: var(--primary);
        box-shadow: 0 0 8px rgba(16, 212, 163, 0.5);
    }

    /* 移动菜单按钮 */
    .menu-btn {
        position: relative;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 4px;
    }

    .menu-line {
        display: block;
        width: 20px;
        height: 2px;
        background: #FFFFFF;
        border-radius: 3px;
        transition: transform 0.3s ease, opacity 0.2s ease;
    }

    .mobile-panel {
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transform: translateY(-8px);
        transition: opacity 0.25s ease, transform 0.3s ease, visibility 0.25s;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        height: 100vh;
        z-index: 90;
        background: rgba(8, 12, 20, 0.97);
        backdrop-filter: blur(22px);
        -webkit-backdrop-filter: blur(22px);
        display: flex;
        flex-direction: column;
    }

    .mobile-panel.open {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: translateY(0);
    }

    .mobile-nav-item {
        display: flex;
        align-items: center;
        justify-content: space-between;
        min-height: 58px;
        color: #E9F2F5;
        font-size: 17px;
        font-weight: 600;
        padding: 0 20px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .mobile-nav-item:hover {
        background: rgba(255, 255, 255, 0.05);
        color: var(--primary);
    }

    .mobile-nav-item.active {
        color: var(--primary);
    }

    .panel-bg {
        position: absolute;
        inset: 0;
        overflow: hidden;
        z-index: 0;
    }

    .hero-grid-lines {
        background-image:
            linear-gradient(rgba(165, 231, 219, 0.05) 1px, transparent 1px),
            linear-gradient(90deg, rgba(165, 231, 219, 0.05) 1px, transparent 1px);
        background-size: 46px 46px;
        mask-image: radial-gradient(circle at 60% 40%, rgba(0, 0, 0, 0.85), transparent 72%);
    }

    .hero-glow {
        position: absolute;
        width: 700px;
        height: 700px;
        right: -120px;
        top: -180px;
        background: radial-gradient(circle, rgba(16, 212, 163, 0.2), transparent 62%);
        filter: blur(40px);
    }

    .index-icon-badge {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 48px;
        height: 48px;
        border-radius: 14px;
        background: rgba(16, 212, 163, 0.12);
        border: 1px solid rgba(16, 212, 163, 0.18);
        color: #10D4A3;
        flex-shrink: 0;
    }

    .site-nav-drawer-close {
        background: rgba(255, 255, 255, 0.08);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: 999px;
        color: #FFFFFF;
        width: 40px;
        height: 40px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    /* 场景图片卡 */
    .scene-card {
        position: relative;
        border-radius: var(--radius-lg);
        overflow: hidden;
        background: var(--bg-soft);
    }

    .scene-card img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .scene-card-gradient {
        position: absolute;
        inset: 0;
        background: linear-gradient(to top, rgba(5, 8, 14, 0.88) 0%, rgba(5, 8, 14, 0.2) 75%);
    }

    .scene-card-tag {
        position: absolute;
        top: 16px;
        left: 16px;
        background: rgba(6, 15, 24, 0.42);
        backdrop-filter: blur(12px);
        border: 1px solid rgba(255, 255, 255, 0.18);
        padding: 6px 12px;
        border-radius: 999px;
        font-size: 12px;
        color: #FFFFFF;
    }

    .media-frame {
        border-radius: 22px;
        overflow: hidden;
        border: 1px solid rgba(255, 255, 255, 0.09);
        box-shadow: 0 20px 55px rgba(0, 0, 0, 0.35);
    }

    .media-frame img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .basic-list {
        border-top: 1px solid rgba(255, 255, 255, 0.06);
    }

    .basic-list-item {
        display: flex;
        gap: 14px;
        padding: 16px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        align-items: flex-start;
    }

    .list-dot {
        width: 10px;
        height: 10px;
        border-radius: 999px;
        background: var(--primary);
        box-shadow: 0 0 10px rgba(16, 212, 163, 0.6);
        margin-top: 12px;
        flex-shrink: 0;
    }

    .step-num {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        font-family: var(--font-display);
        color: var(--primary);
        background: rgba(16, 212, 163, 0.1);
        border: 1px solid rgba(16, 212, 163, 0.2);
        border-radius: 12px;
        font-size: 26px;
        font-weight: 800;
        width: 54px;
        height: 54px;
        flex-shrink: 0;
    }

    .faq-item {
        border: 1px solid rgba(255, 255, 255, 0.09);
        border-radius: 16px;
        background: rgba(255, 255, 255, 0.025);
        transition: border-color 0.3s ease, background 0.3s ease;
    }

    .faq-item.open {
        border-color: rgba(16, 212, 163, 0.38);
        background: rgba(16, 212, 163, 0.04);
    }

    .faq-toggle {
        width: 100%;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 20px;
        background: transparent;
        border: 0;
        color: #FFFFFF;
        font-size: 16px;
        font-weight: 600;
        text-align: left;
        padding: 18px 18px 18px 18px;
    }

    .faq-toggle:hover {
        color: var(--primary);
    }

    .faq-icon {
        position: relative;
        width: 28px;
        height: 28px;
        flex-shrink: 0;
        border-radius: 999px;
        background: rgba(16, 212, 163, 0.1);
        border: 1px solid rgba(16, 212, 163, 0.2);
    }

    .faq-icon::before,
    .faq-icon::after {
        content: "";
        position: absolute;
        left: 50%;
        top: 50%;
        width: 11px;
        height: 1.5px;
        background: var(--primary);
        transform: translate(-50%, -50%);
    }

    .faq-icon::after {
        transform: translate(-50%, -50%) rotate(90deg);
        transition: transform 0.3s ease;
    }

    .faq-item.open .faq-icon::after {
        transform: translate(-50%, -50%) rotate(0deg);
    }

    .faq-panel {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease;
    }

    .faq-item.open .faq-panel {
        max-height: 600px;
    }

    .faq-answer {
        padding: 0 18px 20px 18px;
        color: var(--text-muted);
        font-size: 15px;
        line-height: 1.85;
    }

    .cta-box {
        background:
            linear-gradient(102deg, rgba(16, 212, 163, 0.14), rgba(240, 154, 46, 0.05)),
            rgba(255, 255, 255, 0.04);
        backdrop-filter: blur(18px);
        border-radius: 28px;
        border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .label-icon {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        color: #A9F2DF;
        font-size: 13px;
        letter-spacing: 0.05em;
    }

    @media (max-width: 1023px) {
        .desktop-only-nav {
            display: none !important;
        }
    }

    @media (min-width: 1024px) {
        .mobile-only-block {
            display: none !important;
        }
    }

    @media (max-width: 640px) {
        .container-x {
            padding-left: 1rem;
            padding-right: 1rem;
        }

        .btn-glow,
        .btn-outline {
            width: auto;
            white-space: normal;
        }
    }

/* roulang page: article */
:root {
  --c-primary: #10D4A3;
  --c-primary-deep: #0BB28A;
  --c-secondary: #F09A2E;
  --c-bg: #0A0E17;
  --c-bg-soft: #111A28;
  --c-card: rgba(22, 34, 52, 0.76);
  --c-text: #E9F2F5;
  --c-text-muted: #8FA3B4;
  --c-line: rgba(165, 231, 219, 0.16);
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-card: 0 12px 40px rgba(0, 0, 0, 0.26), 0 0 0 1px rgba(255, 255, 255, 0.04) inset;
  --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
::selection { background: rgba(16, 212, 163, 0.28); color: #fff; }
a { color: inherit; text-decoration: none; transition: color .2s ease; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea { font-family: inherit; }
.container-x { max-width: 1200px; margin-left: auto; margin-right: auto; padding-left: 1.25rem; padding-right: 1.25rem; }
.overflow-ellipsis-2 { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.overflow-ellipsis-1 { display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }

/* NAV */
header#siteHeader {
  transition: background .3s ease, border-color .2s ease;
}
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: .5rem .75rem;
  margin: 0 .1rem;
  color: #9FB1BE;
  font-size: .94rem;
  font-weight: 500;
  letter-spacing: .02em;
  border-radius: 10px;
  transition: color .2s ease, background .2s ease;
}
.nav-link:hover { color: #fff; background: rgba(255,255,255,.04); }
.nav-link.active {
  color: var(--c-primary);
}
.nav-link.active::after {
  content: '';
  position: absolute;
  left: .9rem;
  right: .9rem;
  bottom: .08rem;
  height: 2px;
  border-radius: 99px;
  background: var(--c-primary);
  box-shadow: 0 0 12px rgba(16,212,163,.7);
}

/* mobile menu button */
.menu-btn { position: relative; display: inline-flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px; width: 44px; height: 44px; border-radius: 12px; transition: background .2s ease; }
.menu-btn:focus-visible, .nav-link:focus-visible, .btn-glow:focus-visible, a:focus-visible, button:focus-visible { outline: 2px solid rgba(16,212,163,.9); outline-offset: 2px; }
.menu-line {
  display: block;
  width: 22px; height: 2px;
  border-radius: 99px;
  background: #ECF6F5;
  transition: transform .3s cubic-bezier(.4,0,.2,1), opacity .2s ease, width .2s ease;
}
.menu-btn.open .line-first { transform: translateY(8px) rotate(45deg); }
.menu-btn.open .line-center { opacity: 0; transform: scaleX(.3); }
.menu-btn.open .line-last { transform: translateY(-8px) rotate(-45deg); }

/* buttons */
.btn-glow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  min-height: 44px;
  padding: .55rem 1.4rem;
  border-radius: 999px;
  background: linear-gradient(135deg, #10D4A3, #0BB28A);
  color: #06231B;
  font-size: .93rem;
  font-weight: 600;
  letter-spacing: .02em;
  box-shadow: 0 0 20px rgba(16,212,163,.28), inset 0 1px 0 rgba(255,255,255,.22);
  transition: transform .25s ease, box-shadow .25s ease, filter .25s ease, background .25s ease;
  white-space: nowrap;
}
.btn-glow:hover {
  transform: translateY(-2px);
  filter: brightness(1.05);
  box-shadow: 0 10px 30px rgba(16,212,163,.45), inset 0 1px 0 rgba(255,255,255,.25);
  color: #06231B;
}
.btn-glow:active { transform: translateY(0); box-shadow: 0 4px 18px rgba(16,212,163,.35); }
.btn-sm { min-height: 38px; padding: .4rem 1.1rem; font-size: .88rem; }
.btn-ghost {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 44px; padding: .55rem 1.5rem; border-radius: 999px;
  border: 1px solid rgba(255,255,255,.18); color: rgba(233,242,245,.84);
  font-size: .94rem; transition: all .25s ease; background: transparent; font-weight: 500;
}
.btn-ghost:hover { border-color: rgba(16,212,163,.6); color: var(--c-primary); }
.text-link-arrow { display:inline-flex; align-items:center; gap:.35rem; color:#9FB3BA; transition: color .2s ease; }
.text-link-arrow:hover { color: var(--c-primary); }
.text-link-arrow i { font-style: normal; transition: transform .2s ease; }
.text-link-arrow:hover i { transform: translateX(3px); }

/* glass card */
.glass-card {
  background: rgba(255,255,255,.04);
  backdrop-filter: blur(14px) saturate(150%);
  -webkit-backdrop-filter: blur(14px) saturate(150%);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-lg);
}
.text-badge {
  display: inline-flex;
  align-items: center;
  padding: .28rem .8rem;
  border-radius: 999px;
  background: rgba(16,212,163,.1);
  border: 1px solid rgba(16,212,163,.16);
  color: rgba(233,242,245,.8);
  font-size: .8rem;
}
.cat-chip {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .22rem .75rem;
  border-radius: 999px;
  background: rgba(16,212,163,.1);
  color: var(--c-primary);
  font-size: .8rem;
  font-weight: 500;
  letter-spacing: .02em;
  border: 1px solid rgba(16,212,163,.2);
  transition: background .2s;
}
.cat-chip:hover { background: rgba(16,212,163,.2); }
.hot-chip {
  background: rgba(240,154,46,.12);
  border-color: rgba(240,154,46,.3);
  color: #F4B45F;
}
.hot-chip .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--c-secondary); box-shadow: 0 0 8px rgba(240,154,46,.9); }

/* page header article banner */
.article-banner {
  position: relative;
  padding: 2.5rem 0 1.6rem;
  border-bottom: 1px solid rgba(255,255,255,.06);
  background:
    radial-gradient(700px 330px at 12% 10%, rgba(16,212,163,.12), transparent 70%),
    radial-gradient(700px 300px at 92% 5%, rgba(240,154,46,.08), transparent 65%),
    url('/assets/images/backpic/back-2.webp') center / cover;
}
.article-banner::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(10,14,23,.55), rgba(10,14,23,.96) 82%);
  pointer-events: none;
}
.article-banner-inner { position: relative; z-index: 2; }

/* breadcrumb */
.crumb-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .4rem;
  color: var(--c-text-muted);
  font-size: .84rem;
  margin-bottom: 1.15rem;
}
.crumb-list a { color: rgba(143,163,180,.88); transition: color .2s; padding: .2rem .15rem; }
.crumb-list a:hover { color: var(--c-primary); }
.crumb-list .sep { opacity: .4; color: rgba(143,163,180,.55); }

/* article main card */
.article-shell {
  max-width: 860px;
  margin: 0 auto;
}
.article-head {
  padding: 0 0 1.5rem;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.article-head h1 {
  font-size: clamp(1.75rem, 4vw, 2.85rem);
  line-height: 1.3;
  color: #fff;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-top: 1rem;
}
.article-meta-line { display: flex; align-items: center; gap: .6rem; flex-wrap: wrap; }
.article-body-content {
  padding: 2.2rem 0 1rem;
}

/* prose-style CMS content */
.cms-prose {
  max-width: 820px;
  color: #C8D7DE;
  font-size: 1.05rem;
  line-height: 1.9;
}
.cms-prose > * + * { margin-top: 1.5rem; }
.cms-prose h1, .cms-prose h2 {
  color: #fff;
  font-weight: 700;
  margin-top: 2.4rem;
  line-height: 1.35;
}
.cms-prose h1 { font-size: 1.7rem; margin-bottom: .4rem; }
.cms-prose h2 { font-size: 1.45rem; margin-bottom: .2rem; }
.cms-prose h3 { color: #F2F8FA; font-size: 1.22rem; margin: 1.9rem 0 .3rem; }
.cms-prose h4 { color: #E6F3F6; font-size: 1.08rem; margin: 1.5rem 0 .2rem; }
.cms-prose p { margin: 1.3rem 0; }
.cms-prose strong { color: #fff; font-weight: 600; }
.cms-prose em { color: #DEECEE; }
.cms-prose a {
  color: var(--c-primary);
  text-decoration: underline;
  text-decoration-color: rgba(16,212,163,.35);
  text-underline-offset: 4px;
  transition: text-decoration-color .2s ease;
}
.cms-prose a:hover { text-decoration-color: var(--c-primary); }
.cms-prose ul, .cms-prose ol { padding-left: 1.3rem; margin: 1.4rem 0; }
.cms-prose ul li { list-style: disc; margin-bottom: .35rem; }
.cms-prose ol li { list-style: decimal; margin-bottom: .35rem; }
.cms-prose blockquote {
  border-left: 3px solid var(--c-primary);
  background: rgba(16,212,163,.06);
  color: #A8C2C4;
  padding: 1rem 1.3rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 1.8rem 0;
}
.cms-prose blockquote p { margin: .3rem 0; }
.cms-prose img { border-radius: var(--radius-md); }
.cms-prose figure { margin: 2rem 0; }
.cms-prose figcaption { text-align: center; color: var(--c-text-muted); font-size: .8rem; margin-top: .7rem; }
.cms-prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.8rem 0;
  font-size: .95rem;
  background: rgba(255,255,255,.03);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.cms-prose th, .cms-prose td {
  padding: .75rem 1rem;
  border-bottom: 1px solid rgba(255,255,255,.06);
  text-align: left;
  vertical-align: top;
}
.cms-prose th {
  background: rgba(16,212,163,.08);
  color: #E6FAF4;
  font-weight: 600;
}
.cms-prose code {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.08);
  color: #DCF7EF;
  border-radius: .375rem;
  padding: .1rem .4rem;
  font-size: .9em;
}
.cms-prose pre {
  background: #0B111C;
  border: 1px solid rgba(255,255,255,.07);
  border-radius: var(--radius-md);
  margin: 1.7rem 0;
  padding: 1.1rem 1.3rem;
  overflow-x: auto;
}
.cms-prose pre code { background: transparent; padding: 0; border: none; color: #CFE3E1; font-size: .92rem; }

/* not found */
.not-found-panel {
  text-align: center;
  padding: 3rem 1.2rem 4rem;
  border-top: 1px solid rgba(255,255,255,.05);
}
.not-found-mark {
  width: 96px; height: 96px;
  margin: 0 auto 1.3rem;
  display: flex; align-items: center; justify-content: center;
  background: rgba(240,154,46,.1);
  border-radius: 32px;
  color: var(--c-secondary);
}
.not-found-panel h2 { font-size: 1.6rem; color: #FFF; font-weight: 700; }
.not-found-panel p { color: var(--c-text-muted); max-width: 420px; margin: .6rem auto 1.6rem; }

/* related */
.related-section {
  background:
    radial-gradient(500px 240px at 80% 10%, rgba(16,212,163,.06), transparent 70%),
    #0B111B;
  border-top: 1px solid rgba(255,255,255,.06);
}
.related-card {
  background: var(--c-card);
  border: 1px solid rgba(255,255,255,.06);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.related-card:hover {
  transform: translateY(-5px);
  border-color: rgba(16,212,163,.4);
  box-shadow: 0 18px 42px -18px rgba(16,212,163,.35), 0 0 0 1px rgba(16,212,163,.1);
}
.related-card-img { aspect-ratio: 16/9; overflow: hidden; position: relative; background: #111A28; }
.related-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.related-card:hover .related-card-img img { transform: scale(1.05); }

/* cta band */
.cta-section { position: relative; overflow: hidden; }
.cta-panel {
  position: relative;
  z-index: 1;
  background:
    radial-gradient(600px 300px at 85% 20%, rgba(16,212,163,.2), transparent 65%),
    radial-gradient(400px 200px at 8% 80%, rgba(240,154,46,.08), transparent 70%),
    #0F1D26;
  border: 1px solid rgba(165, 231, 219, 0.2);
  border-radius: 28px;
  overflow: hidden;
}
.cta-panel::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: linear-gradient(120deg, rgba(16,212,163,.1), transparent 45%);
}
.cta-form input {
  width: 100%;
  height: 50px;
  border-radius: 999px;
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.14);
  padding: 0 1.3rem;
  color: #EFF8F8;
  transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
.cta-form input::placeholder { color: #6F848F; }
.cta-form input:focus {
  outline: none;
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(16,212,163,.2);
  background: rgba(255,255,255,.09);
}

/* footer */
footer { background: #070B12; }
footer a { transition: opacity .2s, color .2s; }
footer a:hover { color: var(--c-primary); opacity: 1; }

/* mobile drawer */
#mobileDrawer {
  transition: transform .35s cubic-bezier(.4, 0, .2, 1), opacity .25s ease, visibility .25s;
  transform: translateX(105%);
  visibility: hidden;
  background: rgba(10,14,23,.98);
  backdrop-filter: blur(20px);
}
#mobileDrawer.open {
  transform: translateX(0);
  visibility: visible;
}
.mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 58px;
  padding: 0 1.4rem;
  font-size: 1.08rem;
  color: #CDDCDF;
  border-bottom: 1px solid rgba(255,255,255,.05);
  transition: all .2s ease;
}
.mobile-nav-link:hover, .mobile-nav-link.active { color: var(--c-primary); background: rgba(16,212,163,.05); }
#drawerMask {
  transition: opacity .3s ease, visibility .3s;
  opacity: 0;
  visibility: hidden;
}
#drawerMask.show { opacity: 1; visibility: visible; }

@media (max-width: 767px) {
  .cms-prose { font-size: 1rem; }
  .cta-panel { border-radius: 20px; }
}
@media (max-width: 520px) {
  .container-x { padding-left: 1rem; padding-right: 1rem; }
  .article-head h1 { font-size: 1.65rem; }
}

/* roulang page: category2 */
:root {
    --color-primary: #10D4A3;
    --color-secondary: #F09A2E;
    --color-bg: #0A0E17;
    --color-bg-soft: #111A28;
    --color-bg-card: rgba(22, 34, 52, 0.76);
    --color-text: #E9F2F5;
    --color-text-muted: #8FA3B4;
    --color-line: rgba(165, 231, 219, 0.16);
    --radius-lg: 20px;
    --radius-md: 14px;
    --radius-sm: 8px;
    --shadow-card: 0 12px 40px rgba(0, 0, 0, 0.26), 0 0 0 1px rgba(255, 255, 255, 0.04) inset;
    --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
    --font-display: "DIN Alternate", "Roboto Condensed", var(--font-sans);
  }

  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

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

  a {
    color: inherit;
    text-decoration: none;
    transition: color .25s ease, border-color .25s ease, background .25s ease, box-shadow .25s ease, transform .25s ease;
  }

  button, input, textarea {
    font-family: inherit;
    color: inherit;
  }

  button {
    border: 0;
    background: none;
    cursor: pointer;
  }

  ul, ol {
    list-style: none;
  }

  :focus-visible {
    outline: 2px solid rgba(16, 212, 163, .9);
    outline-offset: 3px;
    border-radius: 4px;
  }

  .container-x {
    width: 100%;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 20px;
    padding-right: 20px;
  }

  .section-pad {
    padding-top: 80px;
    padding-bottom: 80px;
  }

  .nav-link {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 10px 10px;
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text-muted);
    white-space: nowrap;
  }

  .nav-link:hover {
    color: #ffffff;
  }

  .nav-link.active {
    color: var(--color-primary);
  }

  .nav-link.active::after {
    content: "";
    position: absolute;
    left: 10px;
    right: 10px;
    bottom: 4px;
    height: 2px;
    border-radius: 4px;
    background: var(--color-primary);
    box-shadow: 0 0 12px rgba(16, 212, 163, .5);
  }

  .btn-glow {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: linear-gradient(135deg, #10D4A3, #0BB28A);
    color: #06231B;
    font-size: 15px;
    font-weight: 600;
    padding: 13px 26px;
    border-radius: 999px;
    min-height: 46px;
    box-shadow: 0 0 20px rgba(16, 212, 163, .32), inset 0 1px 0 rgba(255, 255, 255, .26);
    transition: all .3s ease;
  }

  .btn-glow:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 32px rgba(16, 212, 163, .55), inset 0 1px 0 rgba(255, 255, 255, .3);
    background: linear-gradient(135deg, #12e8b1, #0ec196);
  }

  .btn-glow:active {
    transform: translateY(0);
    box-shadow: 0 0 12px rgba(16, 212, 163, .3);
  }

  .btn-glow.btn-sm {
    padding: 9px 18px;
    min-height: 40px;
    font-size: 14px;
  }

  .btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 1px solid rgba(255, 255, 255, .22);
    color: rgba(233, 242, 245, .84);
    border-radius: 999px;
    padding: 12px 26px;
    min-height: 46px;
    font-size: 15px;
    font-weight: 500;
    background: rgba(255, 255, 255, .03);
    transition: all .3s ease;
  }

  .btn-ghost:hover {
    border-color: rgba(16, 212, 163, .65);
    color: var(--color-primary);
    background: rgba(16, 212, 163, .06);
    transform: translateY(-1px);
  }

  .glass-card {
    background: rgba(255, 255, 255, .045);
    border: 1px solid rgba(255, 255, 255, .08);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
  }

  .glass-card:hover {
    border-color: rgba(16, 212, 163, .4);
    transform: translateY(-3px);
    box-shadow: 0 14px 40px -10px rgba(0, 0, 0, .4), 0 0 0 1px rgba(16, 212, 163, .34);
  }

  .text-badge {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 6px 12px;
    font-size: 13px;
    line-height: 1.4;
    background: rgba(16, 212, 163, .09);
    border: 1px solid rgba(16, 212, 163, .18);
    color: #BFF6E8;
  }

  .eyebrow-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--color-primary);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .16em;
    text-transform: uppercase;
    border-radius: 999px;
    background: rgba(16, 212, 163, .08);
    border: 1px solid rgba(16, 212, 163, .22);
    padding: 8px 16px;
  }

  .hero-bg-layer {
    background:
      radial-gradient(ellipse at 70% 18%, rgba(16, 212, 163, .17), transparent 45%),
      radial-gradient(ellipse at 8% 70%, rgba(240, 154, 46, .08), transparent 35%),
      linear-gradient(92deg, rgba(10, 14, 23, .93) 0%, rgba(10, 14, 23, .84) 42%, rgba(10, 14, 23, .52) 100%);
  }

  .result-row-card {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 220px;
    gap: 0;
    border: 1px solid rgba(255, 255, 255, .08);
    background: rgba(255, 255, 255, .035);
    border-radius: 18px;
    overflow: hidden;
    transition: border-color .3s ease, background .3s ease, box-shadow .3s ease, transform .3s ease;
  }

  .result-row-card:hover {
    border-color: rgba(16, 212, 163, .36);
    background: rgba(16, 212, 163, .045);
    box-shadow: 0 12px 40px -10px rgba(0, 0, 0, .42);
    transform: translateY(-2px);
  }

  .result-card-thumb {
    position: relative;
    display: block;
    min-height: 170px;
    overflow: hidden;
  }

  .result-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    inset: 0;
    transition: transform .5s ease;
  }

  .result-row-card:hover .result-card-thumb img {
    transform: scale(1.04);
  }

  .result-card-thumb::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(10, 14, 23, .06) 0%, rgba(10, 14, 23, .42) 100%);
  }

  .filter-sidebar {
    position: sticky;
    top: 130px;
  }

  .filter-btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 12px 14px;
    font-size: 15px;
    color: var(--color-text-muted);
    border: 1px solid transparent;
    border-radius: 12px;
    transition: all .25s ease;
  }

  .filter-btn .arrow-right {
    opacity: 0;
    transform: translateX(-6px);
    transition: all .25s ease;
  }

  .filter-btn:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, .06);
  }

  .filter-btn.active {
    color: #06231B;
    background: linear-gradient(135deg, #10D4A3, #0BB28A);
    box-shadow: 0 0 20px rgba(16, 212, 163, .26);
    font-weight: 600;
  }

  .filter-btn.active .arrow-right {
    opacity: 1;
    transform: translateX(0);
    color: #06231B;
  }

  .chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border-radius: 999px;
    padding: 5px 11px;
    font-size: 12px;
    line-height: 1;
    background: rgba(255, 255, 255, .07);
    color: var(--color-text-muted);
    border: 1px solid rgba(255, 255, 255, .08);
  }

  .icon-box {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    border-radius: 14px;
    background: rgba(16, 212, 163, .1);
    border: 1px solid rgba(16, 212, 163, .18);
    color: var(--color-primary);
  }

  .feature-list li {
    position: relative;
    padding-left: 24px;
    color: rgba(233, 242, 245, .88);
    font-size: 15px;
  }

  .feature-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 8px;
    width: 14px;
    height: 2px;
    background: var(--color-primary);
    border-radius: 4px;
    box-shadow: 0 0 8px rgba(16, 212, 163, .4);
  }

  .faq-item {
    border: 1px solid rgba(255, 255, 255, .08);
    background: rgba(255, 255, 255, .03);
    border-radius: 16px;
    padding: 2px;
  }

  .faq-item summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    list-style: none;
    cursor: pointer;
    padding: 18px 20px;
    font-weight: 600;
    font-size: 16px;
    color: var(--color-text);
    border-radius: 16px;
    transition: background .25s ease;
  }

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

  .faq-item summary:hover {
    color: var(--color-primary);
  }

  .faq-item[open] summary {
    padding-bottom: 8px;
    color: var(--color-primary);
  }

  .faq-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    flex: 0 0 28px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(16, 212, 163, .1);
    color: var(--color-primary);
    border: 1px solid rgba(16, 212, 163, .3);
    font-size: 18px;
    line-height: 1;
    transition: transform .3s ease;
  }

  .faq-item[open] .faq-icon {
    transform: rotate(45deg);
  }

  .faq-answer {
    padding: 0 20px 20px;
    color: var(--color-text-muted);
    font-size: 15px;
    line-height: 1.9;
  }

  .mobile-menu-layer {
    position: fixed;
    inset: 0;
    z-index: 79;
    padding-top: 94px;
    background: rgba(10, 14, 23, .96);
    backdrop-filter: blur(22px);
    -webkit-backdrop-filter: blur(22px);
    opacity: 0;
    pointer-events: none;
    transition: opacity .3s ease;
    overflow-y: auto;
  }

  .mobile-menu-layer.open {
    opacity: 1;
    pointer-events: auto;
  }

  .mobile-menu-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 22px;
    height: 56px;
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text);
    border-bottom: 1px solid rgba(255, 255, 255, .06);
  }

  .mobile-menu-link:hover {
    color: var(--color-primary);
  }

  .mobile-menu-link.active {
    color: var(--color-primary);
  }

  .menu-btn {
    position: relative;
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
  }

  .menu-line {
    width: 22px;
    height: 2px;
    background: currentColor;
    border-radius: 4px;
    transition: transform .3s ease, opacity .3s ease;
  }

  .menu-btn.active .line-first {
    transform: translateY(7px) rotate(45deg);
  }

  .menu-btn.active .line-center {
    opacity: 0;
  }

  .menu-btn.active .line-last {
    transform: translateY(-7px) rotate(-45deg);
  }

  .ctalist {
    border: 1px solid rgba(16, 212, 163, .2);
    background: linear-gradient(120deg, rgba(16, 212, 163, .09), rgba(15, 92, 87, .18) 45%, rgba(16, 212, 163, .05));
  }

  .marquee-tag {
    color: var(--color-text-muted);
    font-size: 14px;
    white-space: nowrap;
    display: inline-flex;
  }

  @media (max-width: 767px) {
    .section-pad {
      padding-top: 54px;
      padding-bottom: 54px;
    }

    .result-row-card {
      grid-template-columns: 1fr;
    }

    .result-card-thumb {
      min-height: 190px;
    }

    .result-card-thumb img {
      position: relative;
      height: 190px;
      min-height: 190px;
    }

    .result-row-card {
      border-radius: 18px;
    }
  }

  @media (max-width: 640px) {
    .container-x {
      padding-left: 14px;
      padding-right: 14px;
    }

    .nav-wrap {
      overflow-x: auto;
    }
  }

/* roulang page: category3 */
:root {
    --primary: #10D4A3;
    --primary-deep: #0BB28A;
    --primary-glow: rgba(16, 212, 163, .25);
    --secondary: #F09A2E;
    --bg: #0A0E17;
    --bg-soft: #111A28;
    --bg-card: rgba(22, 34, 52, .76);
    --text: #E9F2F5;
    --text-muted: #8FA3B4;
    --line: rgba(165, 231, 219, .16);
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-sm: 10px;
    --shadow-card: 0 12px 40px rgba(0,0,0,.26), 0 0 0 1px rgba(255,255,255,.04) inset;
    --font-sans: "PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
    --font-display: "DIN Alternate","Roboto Condensed",var(--font-sans);
  }

  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
  body {
    margin: 0;
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    font-size: 16px;
    line-height: 1.75;
    overflow-x: hidden;
  }
  img { display: block; max-width: 100%; }
  a { color: inherit; text-decoration: none; }
  button { font-family: inherit; border: none; background: none; cursor: pointer; }

  .container-x {
    width: 100%;
    max-width: 1220px;
    margin: 0 auto;
    padding-left: 20px;
    padding-right: 20px;
  }

  .font-display { font-family: var(--font-display); }

  h1, h2, h3, h4 {
    font-family: var(--font-display);
    line-height: 1.25;
    margin: 0;
  }

  /* 导航 */
  .nav-link {
    display: inline-flex;
    align-items: center;
    padding: 8px 14px;
    font-size: 14.5px;
    font-weight: 500;
    color: var(--text-muted);
    border-radius: 8px;
    transition: color .2s ease, background .2s ease;
  }
  .nav-link:hover { color: #fff; background: rgba(255,255,255,.05); }
  .nav-link.active { color: var(--primary); }
  .nav-link.active::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 1px;
    width: 16px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
    transform: translateX(-50%);
  }
  .nav-link:focus-visible,
  .footer-link:focus-visible,
  a:focus-visible,
  button:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 3px;
    border-radius: 6px;
  }

  /* 移动端抽屉 */
  #mobileMenu {
    position: fixed;
    inset: 0;
    background: rgba(17,26,40,.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transform: translateX(100%);
    transition: transform .35s cubic-bezier(.77,0,.18,1);
    z-index: 60;
    overflow-y: auto;
    padding: 96px 24px 40px;
  }
  #mobileMenu.open { transform: translateX(0); }

  .menu-btn { position: relative; display: inline-flex; flex-direction: column; justify-content: center; align-items: center; gap: 5px; }
  .menu-line { display: block; width: 22px; height: 2px; border-radius: 2px; background: currentColor; transition: transform .3s, opacity .2s; }
  .menu-btn.active .line-center { opacity: 0; }
  .menu-btn.active .line-first { transform: translateY(7px) rotate(45deg); }
  .menu-btn.active .line-last { transform: translateY(-7px) rotate(-45deg); }

  .drawer-link {
    display: block;
    color: #C9D7DE;
    font-size: 20px;
    font-weight: 600;
    padding: 14px 0;
    border-bottom: 1px solid rgba(255,255,255,.07);
    transition: color .2s;
  }
  .drawer-link:hover { color: var(--primary); }

  /* 按钮 */
  .btn-glow {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 48px;
    padding: 0 24px;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--primary), var(--primary-deep));
    color: #06231B;
    font-size: 15px;
    font-weight: 700;
    white-space: nowrap;
    box-shadow: 0 0 20px rgba(16,212,163,.28), inset 0 1px 0 rgba(255,255,255,.25);
    transition: transform .25s ease, box-shadow .25s ease, filter .25s ease;
  }
  .btn-glow:hover {
    filter: brightness(1.06);
    transform: translateY(-2px);
    box-shadow: 0 0 28px rgba(16,212,163,.45), inset 0 1px 0 rgba(255,255,255,.3);
  }
  .btn-glow:active { transform: translateY(0); box-shadow: 0 0 12px rgba(16,212,163,.3); }
  .btn-glow.btn-sm { height: 42px; padding: 0 18px; font-size: 14px; }

  .btn-second {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 48px;
    padding: 0 24px;
    border-radius: 999px;
    border: 1px solid rgba(255,255,255,.2);
    color: rgba(255,255,255,.85);
    font-size: 15px;
    font-weight: 600;
    transition: border-color .2s, color .2s, background .2s;
  }
  .btn-second:hover { border-color: rgba(16,212,163,.65); color: var(--primary); background: rgba(16,212,163,.05); }

  .text-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 600;
    transition: color .2s;
  }
  .text-btn:hover { color: var(--primary); }
  .text-btn:hover svg { transform: translateX(3px); }
  .text-btn svg { transition: transform .2s; }

  /* 卡片与标签 */
  .glass-card {
    background: var(--bg-card);
    border: 1px solid rgba(255,255,255,.09);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
  }

  .hover-lift {
    transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
  }
  .hover-lift:hover {
    transform: translateY(-4px);
    border-color: rgba(16,212,163,.35);
    box-shadow: 0 12px 36px -10px rgba(16,212,163,.22), 0 0 0 1px rgba(16,212,163,.1) inset;
  }

  .text-badge {
    display: inline-flex;
    align-items: center;
    flex-wrap: wrap;
    padding: 6px 13px;
    border-radius: 999px;
    background: rgba(16,212,163,.12);
    border: 1px solid rgba(16,212,163,.18);
    color: var(--primary);
    font-size: 12.5px;
    font-weight: 500;
  }

  .amber-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 6px 13px;
    border-radius: 999px;
    background: rgba(240,154,46,.13);
    border: 1px solid rgba(240,154,46,.22);
    color: var(--secondary);
    font-size: 12px;
    font-weight: 600;
  }

  .mini-border-card {
    background: rgba(255,255,255,.045);
    border: 1px solid rgba(255,255,255,.08);
    border-radius: var(--radius-md);
    padding: 18px;
    transition: border-color .25s, transform .25s, background .25s;
  }
  .mini-border-card:hover {
    background: rgba(255,255,255,.07);
    border-color: rgba(16,212,163,.4);
    transform: translateY(-2px);
  }

  .cap-card {
    background: rgba(255,255,255,.025);
    border: 1px solid rgba(255,255,255,.065);
    border-radius: 28px;
    padding: 26px 22px 22px;
  }

  /* FAQ */
  .faq-item { border-bottom: 1px solid rgba(255,255,255,.08); }
  .faq-item summary {
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 22px 4px;
    cursor: pointer;
    font-size: 17px;
    font-weight: 600;
    color: #E9F2F5;
    transition: color .2s;
  }
  .faq-item summary::-webkit-details-marker { display: none; }
  .faq-item summary:hover { color: var(--primary); }
  .faq-item .faq-icon {
    flex: 0 0 28px;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(16,212,163,.35);
    color: var(--primary);
    font-size: 18px;
    transition: transform .3s, background .3s;
  }
  .faq-item details[open] summary .faq-icon { transform: rotate(45deg); background: rgba(16,212,163,.12); }
  .faq-item .faq-body { padding: 0 4px 22px; color: var(--text-muted); font-size: 15px; line-height: 1.85; max-width: 620px; }

  /* 图片 */
  .img-frame {
    border-radius: 18px;
    border: 1px solid rgba(255,255,255,.09);
    overflow: hidden;
    box-shadow: 0 18px 50px rgba(0,0,0,.3);
    background: rgba(255,255,255,.02);
  }
  .img-frame img { width: 100%; height: 100%; object-fit: cover; }

  .scene-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(145deg, rgba(16,212,163,.15), rgba(16,212,163,.05));
    color: var(--primary);
    border: 1px solid rgba(16,212,163,.2);
  }

  /* 背景辅助 */
  .soft-bg { background: rgba(255,255,255,.018); border-top: 1px solid rgba(255,255,255,.05); border-bottom: 1px solid rgba(255,255,255,.05); }
  .dot-grid {
    background-image: radial-gradient(rgba(255,255,255,.07) 1px, transparent 1px);
    background-size: 26px 26px;
  }

  .clamp-2 { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

  ::selection { background: rgba(16,212,163,.3); }

/* roulang page: category4 */
:root{
    --color-primary:#10D4A3;
    --color-secondary:#F09A2E;
    --color-bg:#0A0E17;
    --color-bg-soft:#111A28;
    --color-bg-card:rgba(22,34,52,0.76);
    --color-text:#E9F2F5;
    --color-muted:#8FA3B4;
    --color-line:rgba(165,231,219,0.16);
    --radius-lg:20px;
    --radius-md:14px;
    --radius-sm:8px;
    --shadow-card:0 12px 40px rgba(0,0,0,0.26), 0 0 0 1px rgba(255,255,255,0.04) inset;
  }
  *{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--color-bg);
    color:var(--color-text);
    font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
    line-height:1.75;
    font-size:16px;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block}
  a,button,input{color:inherit;font:inherit}
  a{text-decoration:none}
  h1,h2,h3,h4{color:#fff;line-height:1.3;margin:0}
  button{border:none;cursor:pointer}
  a:focus-visible,button:focus-visible,input:focus-visible{
    outline:2px solid rgba(16,212,163,.9);
    outline-offset:3px;
  }

  .container-x{
    width:min(1200px, calc(100% - 40px));
    margin-inline:auto;
  }
  .section-pad{padding:84px 0}

  @media(max-width:768px){
    .section-pad{padding:56px 0}
    .container-x{width:min(100% - 28px, 1200px)}
  }

  /* 导航 */
  #siteHeader{
    transition:background .3s, border-color .3s, box-shadow .3s;
  }
  #siteHeader.scrolled{
    background:rgba(10,14,23,.88);
    box-shadow:0 12px 30px rgba(0,0,0,.2);
  }
  .nav-link{
    position:relative;
    display:inline-flex;
    align-items:center;
    height:82px;
    padding:.5rem 1rem;
    font-size:15px;
    font-weight:600;
    color:#8FA3B4;
    transition:color .2s ease;
    letter-spacing:.01em;
    margin-inline:4px;
  }
  .nav-link:hover{color:#fff}
  .nav-link.is-active{
    color:var(--color-primary);
  }
  .nav-link.is-active::after{
    content:"";
    position:absolute;
    left:50%;
    bottom:10px;
    width:16px;
    height:2px;
    background:var(--color-secondary);
    border-radius:99px;
    transform:translateX(-50%);
  }
  .menu-btn .menu-line{
    display:block;
    width:22px;
    height:2px;
    background:currentColor;
    margin:4px auto;
    border-radius:99px;
    transition:transform .25s ease, opacity .25s ease;
  }
  .menu-btn.active .line-first{transform:translateY(5px) rotate(45deg)}
  .menu-btn.active .line-center{opacity:0;transform:scaleX(.4)}
  .menu-btn.active .line-last{transform:translateY(-5px) rotate(-45deg)}

  .mobile-menu{
    position:fixed;
    top:0;
    left:0;
    right:0;
    bottom:0;
    z-index:78;
    background:rgba(10,14,23,.96);
    backdrop-filter:blur(20px);
    padding-top:84px;
    padding-bottom:40px;
    opacity:0;
    transform:translateY(-100%);
    visibility:hidden;
    transition:opacity .3s ease, transform .3s ease, visibility .3s;
  }
  .mobile-menu.open{opacity:1;visibility:visible;transform:none}
  .mobile-menu a.mobile-link{
    display:flex;
    align-items:center;
    height:58px;
    font-size:17px;
    font-weight:600;
    color:#E9F2F5;
    border-bottom:1px solid rgba(255,255,255,.05);
  }
  .mobile-menu a.mobile-link.is-active{color:var(--color-primary)}

  /* 卡片与按钮 */
  .glass-card{
    background:var(--color-bg-card);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border:1px solid rgba(255,255,255,.08);
    border-radius:var(--radius-lg);
    box-shadow:var(--shadow-card);
  }
  .btn-glow{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:.45rem;
    background:linear-gradient(135deg, #10D4A3 0%, #0BB28A 100%);
    color:#06231B;
    border-radius:999px;
    font-weight:700;
    padding:.72rem 1.25rem;
    min-height:44px;
    font-size:14px;
    box-shadow:0 0 18px rgba(16,212,163,.3), inset 0 1px 0 rgba(255,255,255,.2);
    transition:box-shadow .25s ease, transform .25s ease, filter .25s ease;
  }
  .btn-glow:hover{transform:translateY(-2px); box-shadow:0 0 26px rgba(16,212,163,.5); filter:brightness(1.04)}
  .btn-glow:active{transform:translateY(0); box-shadow:0 0 14px rgba(16,212,163,.35)}
  .btn-ghost{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:.5rem;
    border:1px solid rgba(255,255,255,.2);
    color:rgba(233,242,245,.85);
    border-radius:999px;
    font-weight:600;
    padding:.72rem 1.35rem;
    min-height:44px;
    font-size:14px;
    transition:border-color .2s ease, color .2s ease, transform .2s ease, background .2s;
  }
  .btn-ghost:hover{border-color:rgba(16,212,163,.65);color:var(--color-primary)}
  .text-link-arrow{
    display:inline-flex;
    align-items:center;
    gap:.3rem;
    color:var(--color-muted);
    font-weight:500;
    font-size:14px;
    transition:color .2s, gap .2s;
  }
  .text-link-arrow:hover{color:var(--color-primary); gap:.55rem}
  .text-link-arrow .arr{transition:transform .2s}
  .text-link-arrow:hover .arr{transform:translateX(2px)}

  .text-badge{
    display:inline-flex;
    align-items:center;
    padding:.22rem .7rem;
    border-radius:999px;
    font-size:12px;
    background:rgba(16,212,163,.1);
    color:var(--color-primary);
    border:1px solid rgba(16,212,163,.12);
    white-space:nowrap;
  }

  .primary-mark{
    display:inline-flex;
    width:42px;height:42px;
    border-radius:13px;
    background:linear-gradient(135deg, rgba(16,212,163,.16), rgba(16,212,163,.04));
    color:var(--color-primary);
    align-items:center;
    justify-content:center;
    border:1px solid rgba(16,212,163,.18);
  }

  /* Hero 分类立页 */
  .hero-mask::after{
    content:"";
    position:absolute;
    inset:0;
    z-index:1;
    background:
      radial-gradient(circle at 24% 26%, rgba(16,212,163,.1), transparent 26%),
      radial-gradient(circle at 78% 18%, rgba(240,154,46,.08), transparent 22%),
      linear-gradient(90deg, rgba(10,14,23,.97) 0%, rgba(10,14,23,.86) 48%, rgba(10,14,23,.56) 100%);
  }

  /* 数据小面板 */
  .mock-panel{
    background:linear-gradient(160deg, rgba(18,29,45,.92), rgba(9,14,22,.94));
    border:1px solid rgba(255,255,255,.1);
    border-radius:26px;
    box-shadow:0 24px 55px rgba(0,0,0,.45), 0 0 0 1px rgba(255,255,255,.03) inset;
    backdrop-filter:blur(10px);
  }
  .chart-bar{
    height:7px;
    border-radius:99px;
    background:rgba(233,242,245,.08);
    overflow:hidden;
  }
  .chart-bar > i{
    display:block;height:100%;
    border-radius:99px;
    background:linear-gradient(90deg, rgba(16,212,163,.75), rgba(16,212,163,.25));
  }

  /* 数字指标 */
  .stat-card{
    border-radius:var(--radius-md);
    padding:1rem 1.1rem;
    border:1px solid rgba(255,255,255,.07);
    background:rgba(255,255,255,.035);
  }
  .stat-card .stat-num{
    font-family:"DIN Alternate","Roboto Condensed","PingFang SC",sans-serif;
    font-size:1.7rem;
    font-weight:800;
    color:#fff;
    line-height:1.15;
  }
  .stat-card .stat-label{
    font-size:12.5px;
    color:#8FA3B4;
    margin-top:6px;
  }

  /* feature / scene 卡片 */
  .feature-card{
    border-radius:var(--radius-lg);
    border:1px solid rgba(255,255,255,.07);
    background:linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.015));
    padding:1.6rem;
    transition:transform .3s ease, border-color .3s ease, box-shadow .3s ease;
  }
  .feature-card:hover{
    transform:translateY(-4px);
    border-color:rgba(16,212,163,.35);
    box-shadow:0 12px 32px -10px rgba(16,212,163,.3);
  }

  /* 指标索引长表 */
  .index-row{
    display:grid;
    grid-template-columns:minmax(0,1fr) auto;
    gap:1.5rem;
    align-items:center;
    padding:1.15rem .6rem;
    border-bottom:1px solid rgba(233,242,245,.07);
    transition:background .2s ease;
  }
  .index-row:hover{background:rgba(233,242,245,.025)}
  .index-row .row-index{
    font-family:"Roboto Condensed","DIN Alternate",sans-serif;
    font-size:13px;
    color:var(--color-primary);
    font-weight:700;
  }
  .index-row .row-title{
    color:#fff;
    font-weight:700;
    font-size:16px;
    letter-spacing:.01em;
    margin-bottom:4px;
  }
  .index-row .row-desc{
    color:var(--color-muted);
    font-size:14px;
    line-height:1.65;
    max-width:54em;
  }
  .index-row .row-cta{
    display:inline-flex;
    align-items:center;
    gap:.3rem;
    color:var(--color-muted);
    font-size:14px;
    font-weight:600;
    white-space:nowrap;
    transition:color .2s;
  }
  .index-row:hover .row-cta{color:var(--color-primary)}

  /* 流程时间轴 */
  .timeline-wrap{position:relative;padding-left:1.2rem}
  .timeline-wrap::before{
    content:"";
    position:absolute;
    left:7px;top:4px;bottom:4px;
    width:1px;
    background:linear-gradient(180deg, rgba(16,212,163,.5), rgba(16,212,163,.06));
  }
  .timeline-item{position:relative;padding-bottom:2rem;padding-left:1.2rem}
  .timeline-item:last-child{padding-bottom:0}
  .timeline-item::before{
    content:"";
    position:absolute;
    left:-1.2rem;top:4px;
    width:10px;height:10px;
    border-radius:50%;
    background:#10D4A3;
    box-shadow:0 0 0 4px rgba(16,212,163,.14);
  }

  /* FAQ */
  .faq-wrap{
    max-width:880px;
    margin:0 auto;
  }
  .faq-item{
    border:1px solid rgba(233,242,245,.07);
    border-radius:var(--radius-md);
    background:rgba(255,255,255,.025);
    margin-bottom:12px;
    transition:border-color .2s ease, background .2s ease;
  }
  .faq-item.active{
    border-color:rgba(16,212,163,.25);
    background:rgba(16,212,163,.04);
  }
  .faq-question{
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:1rem;
    text-align:left;
    background:transparent;
    padding:1.15rem 1.25rem;
    color:#E9F2F5;
    font-weight:600;
    font-size:16px;
    border-radius:var(--radius-md);
    line-height:1.5;
    transition:color .2s;
  }
  .faq-q-icon{
    display:inline-flex;
    width:26px;height:26px;
    border-radius:50%;
    align-items:center;
    justify-content:center;
    border:1px solid rgba(255,255,255,.15);
    flex:none;
    color:var(--color-muted);
    font-size:18px;
    transition:transform .3s ease, border-color .3s, color .3s;
  }
  .faq-item.active .faq-q-icon{
    transform:rotate(45deg);
    border-color:var(--color-primary);
    color:var(--color-primary);
  }
  .faq-answer{
    max-height:0;
    overflow:hidden;
    transition:max-height .3s ease, padding .3s ease;
    color:var(--color-muted);
    font-size:15px;
    line-height:1.85;
  }
  .faq-answer .inner{padding:0 1.25rem 1.25rem}
  .faq-item.active .faq-answer{max-height:320px}

  /* 页脚 */
  footer{
    background:#070B12;
  }

  /* 响应式 */
  @media(max-width:1024px){
    .nav-link{height:auto;padding:.55rem .65rem}
    .nav-link.is-active::after{display:none}
  }