/* roulang page: index */
:root {
            --bg-deep: #050A14;
            --bg-body: #07101E;
            --bg-mid: #08111f;
            --color-primary: #38BDF8;
            --color-moon: #E9F0FA;
            --color-secondary: #A5B8CE;
            --color-weaker: #647C99;
            --color-gold: #E0A82E;
            --glass-bg: rgba(17, 30, 48, 0.62);
            --glass-bg-light: rgba(25, 42, 66, 0.55);
            --glass-bg-deep: rgba(8, 15, 28, 0.75);
            --border-glass: rgba(120, 170, 220, 0.16);
            --border-glass-hi: rgba(125, 191, 255, 0.3);
            --r-lg: 24px;
            --r-md: 18px;
            --r-sm: 12px;
            --shadow-card: 0 18px 40px -18px rgba(0, 0, 0, .45);
            --shadow-cta: 0 0 30px rgba(56, 189, 248, .35), inset 0 1px 0 rgb(255 255 255 / .1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            background-color: var(--bg-body);
            color: var(--color-moon);
            font-family: 'Noto Sans SC', 'HarmonyOS Sans', 'MiSans', system-ui, sans-serif;
            line-height: 1.75;
            font-size: 16px;
            overflow-x: hidden;
            background-image:
                radial-gradient(ellipse 60% 45% at 15% 10%, rgba(36, 70, 105, .22) 0%, rgba(0, 0, 0, 0) 70%),
                radial-gradient(ellipse 45% 35% at 85% 20%, rgba(25, 60, 85, .16) 0%, rgba(0, 0, 0, 0) 70%),
                radial-gradient(ellipse 70% 50% at 50% 100%, rgba(30, 55, 90, .15) 0%, transparent 70%);
        }

        ::selection {
            background: rgba(56, 189, 248, .28);
            color: #fff;
        }

        img,
        svg,
        video {
            max-width: 100%;
            height: auto;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color .3s ease;
        }

        a,
        button {
            cursor: pointer;
        }

        button:focus-visible,
        a:focus-visible {
            outline: 2px solid rgba(125, 191, 255, .85);
            outline-offset: 3px;
            border-radius: 6px;
        }

        #starlight-nav {
            backdrop-filter: blur(16px) saturate(180%);
            -webkit-backdrop-filter: blur(16px) saturate(180%);
            background: rgba(5, 10, 20, .68);
            border-bottom: 1px solid rgba(130, 170, 210, .14);
            transition: all .3s ease;
        }

        #starlight-nav.scrolled {
            background: rgba(4, 9, 18, .88);
            box-shadow: 0 15px 30px -15px rgba(0, 0, 0, .5);
        }

        .nav-link {
            position: relative;
            padding: .45rem .55rem;
            border-radius: 10px;
            font-weight: 400;
            letter-spacing: .2px;
            color: var(--color-secondary);
            transition: background .25s, color .25s;
        }

        .nav-link:hover {
            color: var(--color-moon);
            background: rgba(56, 189, 248, .08);
        }

        .active-nav-item {
            color: var(--color-moon) !important;
            background: rgba(56, 189, 248, .14) !important;
        }

        .active-nav-item::after {
            content: '';
            position: absolute;
            left: 16%;
            right: 16%;
            bottom: -2px;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
            border-radius: 99px;
        }

        .logo-white {
            font-weight: 750;
            letter-spacing: .5px;
            background: linear-gradient(91deg, #fff 10%, var(--color-primary) 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .moon-gradient-text {
            background: linear-gradient(110deg, #FBFCFF 0%, #ADC8E8 50%, #678BB3 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .starlink-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            background: linear-gradient(135deg, rgba(56, 189, 248, .18), rgba(56, 189, 248, .04));
            border: 1px solid rgba(125, 191, 255, .35);
            box-shadow: 0 8px 22px -8px rgba(0, 0, 0, .4), inset 0 1px 0 rgba(255, 255, 255, .06);
            color: var(--color-moon);
            padding: .85rem 1.9rem;
            border-radius: var(--r-sm);
            font-weight: 500;
            transition: all .28s cubic-bezier(.2, .7, .2, 1);
        }

        .starlink-btn:hover {
            background: linear-gradient(135deg, rgba(56, 189, 248, .3), rgba(56, 189, 248, .08));
            border-color: rgba(125, 191, 255, .65);
            box-shadow: 0 14px 38px -8px rgba(0, 30, 60, .5), 0 0 0 1px rgba(56, 189, 248, .2);
            transform: translateY(-2px);
        }

        .starlink-btn:active {
            transform: translateY(2px) scale(.98);
            box-shadow: 0 2px 12px -4px #000, inset 0 3px 8px rgb(0 0 0 / .2);
        }

        .ghost-btn {
            background: transparent;
            border: 1px solid rgba(165, 184, 206, .25);
            color: var(--color-secondary);
            padding: .75rem 1.6rem;
            border-radius: var(--r-sm);
            font-weight: 400;
            transition: all .28s;
        }

        .ghost-btn:hover {
            border-color: rgba(125, 191, 255, .6);
            color: var(--color-moon);
            background: rgba(56, 189, 248, .06);
            transform: translateY(-1px);
        }

        .ghost-btn:active {
            transform: translateY(1px) scale(.99);
        }

        .glass-panel {
            background: var(--glass-bg);
            border: 1px solid var(--border-glass);
            -webkit-backdrop-filter: blur(12px);
            backdrop-filter: blur(12px);
            border-radius: var(--r-md);
        }

        .glass-panel-light {
            background: var(--glass-bg-light);
            border: 1px solid rgba(150, 200, 255, .2);
            backdrop-filter: blur(14px);
        }

        .card-float {
            transition: all .35s cubic-bezier(.2, .65, .25, 1);
            box-shadow: var(--shadow-card);
        }

        .card-float:hover {
            transform: translateY(-6px);
            border-color: rgba(56, 189, 248, .3);
            box-shadow: 0 24px 60px -16px rgba(0, 0, 0, .6), 0 0 0 1px rgba(56, 189, 248, .12);
        }

        .section-badge {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            background: rgba(56, 189, 248, .06);
            border: 1px solid rgba(56, 189, 248, .2);
            padding: .35rem 1rem;
            border-radius: 99px;
            font-size: .85rem;
            color: var(--color-secondary);
            letter-spacing: .3px;
        }

        .capsule-tag {
            background: rgba(56, 189, 248, .12);
            border: 1px solid rgba(56, 189, 248, .18);
            color: #93CFF1;
            padding: .18rem .8rem;
            border-radius: 99px;
            font-size: .78rem;
            font-weight: 400;
        }

        .gold-dot {
            color: var(--color-gold);
            text-shadow: 0 0 18px rgba(224, 168, 46, .4);
        }

        .stat-value {
            background: linear-gradient(115deg, #FFFFFF, #A5C8E8);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .info-row-card {
            background: linear-gradient(95deg, rgba(18, 31, 48, .74) 0%, rgba(10, 20, 34, .45) 100%);
            border: 1px solid rgba(100, 160, 220, .12);
            border-radius: 18px;
            padding: 1.2rem 1.2rem;
            transition: all .35s ease;
        }

        .info-row-card:hover {
            background: linear-gradient(95deg, rgba(22, 40, 62, .84) 0%, rgba(13, 24, 40, .5) 100%);
            border-color: rgba(56, 189, 248, .35);
            transform: translateY(-3px);
            box-shadow: 0 18px 30px -15px #000;
        }

        .window-frame {
            border-radius: var(--r-lg);
            box-shadow: 0 36px 90px -25px rgba(0, 0, 0, .7);
            background: rgba(9, 16, 28, .5);
            -webkit-backdrop-filter: blur(8px);
            backdrop-filter: blur(8px);
        }

        .window-bar {
            display: flex;
            align-items: center;
            gap: .55rem;
            padding: .85rem 1.2rem;
            border-bottom: 1px solid rgba(128, 170, 215, .12);
        }

        .win-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #FC524B;
        }

        .win-dot:nth-child(2) {
            background: #FABD3B;
        }

        .win-dot:nth-child(3) {
            background: #38CB5C;
        }

        .faq-item {
            border-bottom: 1px solid rgba(100, 160, 210, .15);
            background: transparent;
            transition: all .3s;
        }

        .faq-question {
            padding: 1.3rem .4rem;
            font-weight: 500;
            width: 100%;
            text-align: left;
            background: transparent;
            border: none;
            color: var(--color-moon);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            font-size: 1.05rem;
            transition: color .3s;
        }

        .faq-question:hover {
            color: #fff;
        }

        .faq-question .icon-circle {
            width: 36px;
            height: 36px;
            min-width: 36px;
            border-radius: 50%;
            border: 1px solid rgba(56, 189, 248, .3);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(56, 189, 248, .08);
            color: var(--color-primary);
            transition: background .3s, transform .45s cubic-bezier(.2, .7, .3, 1.2);
            font-size: 1.1rem;
        }

        .faq-item[aria-expanded="true"] .icon-circle {
            background: rgba(56, 189, 248, .25);
            transform: rotate(135deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease-in-out;
            color: var(--color-secondary);
            font-size: .95rem;
            padding: 0 .4rem;
        }

        .faq-answer-inner {
            padding: 0 0 1.4rem;
            max-width: 85%;
            line-height: 1.8;
        }

        .faq-item[aria-expanded="true"] .faq-answer {
            max-height: 200px;
        }

        .footer-bg {
            background: #03070E;
            border-top: 1px solid rgba(100, 150, 210, .12);
        }

        .copyright-small {
            font-size: .85rem;
            color: var(--color-weaker);
            letter-spacing: .3px;
        }

        .hero-back {
            background-image: linear-gradient(0deg, rgba(5, 10, 20, .78) 10%, rgba(5, 10, 20, .35) 70%, rgba(5, 10, 20, .54) 100%), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center 70%;
        }

        .section-divider {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(56, 189, 248, .25), transparent);
        }

        .hero-title {
            line-height: 1.2;
            letter-spacing: .5px;
        }

        .mobile-nav {
            background: rgba(4, 8, 16, .95);
            -webkit-backdrop-filter: blur(28px);
            backdrop-filter: blur(28px);
            border-bottom: 1px solid rgba(120, 170, 220, .2);
        }

        .mobile-nav a {
            display: block;
            padding: .8rem 1.2rem;
            border-radius: 10px;
            font-size: 1rem;
            color: #C8D6E8;
            border-bottom: 1px solid rgba(120, 170, 220, .06);
        }

        .mobile-nav a:hover {
            background: rgba(56, 189, 248, .08);
            color: #fff;
        }

        .mobile-nav .nav-cta-mobile {
            background: rgba(56, 189, 248, .2);
            border: 1px solid rgba(56, 189, 248, .4);
            text-align: center;
            color: #fff;
            margin-top: .5rem;
            border-radius: 14px;
        }

        .backpic-section {
            background-image: linear-gradient(180deg, rgba(5, 10, 20, .70), rgba(5, 10, 20, .48), rgba(5, 10, 20, .88)), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
        }

        .coverimg-cover {
            object-fit: cover;
            object-position: center 45%;
            transition: transform .8s cubic-bezier(.2, .7, .3, 1);
        }

        .image-card:hover .coverimg-cover {
            transform: scale(1.04);
        }

        .img-bezel {
            border-radius: 20px;
            border: 1px solid rgba(120, 170, 220, .25);
            box-shadow: 0 35px 70px -30px #000;
        }

        .cta-section-bg {
            background-image: linear-gradient(rgba(5, 10, 20, .62), rgba(5, 10, 20, .82)), url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-attachment: fixed;
        }

        #floatCta {
            display: none;
            transition: opacity .5s, transform .5s;
        }

        html.scroll-lock {
            overflow: hidden;
        }

/* roulang page: article */
:root {
  --bg-deep: #050a14;
  --bg-body: #070e1b;
  --panel: rgba(17, 30, 48, 0.54);
  --panel-light: rgba(24, 43, 66, 0.72);
  --line: rgba(150, 184, 220, 0.13);
  --line-bright: rgba(125, 211, 252, 0.35);
  --ink: #e9f0fa;
  --ink-2: #a5b8ce;
  --ink-3: #647c99;
  --sky: #38bdf8;
  --gold: #e7b868;
  --radius-lg: 22px;
  --radius-md: 16px;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-body);
  color: var(--ink);
  font-family: "Noto Sans SC", "HarmonyOS Sans", "MiSans", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  line-height: 1.75;
  overflow-x: hidden;
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 82% 18%, rgba(56, 189, 248, 0.06), transparent 320px),
    radial-gradient(circle at 22% 66%, rgba(118, 190, 255, 0.04), transparent 420px),
    radial-gradient(circle at 54% 38%, rgba(217, 186, 104, 0.03), transparent 260px);
}

::selection {
  background: rgba(56, 189, 248, 0.24);
  color: #fff;
}

img {
  max-width: 100%;
}

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

#starlight-nav {
  background: rgba(5, 10, 20, 0.6);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(150, 184, 220, 0.11);
}

.logo-white {
  background: linear-gradient(115deg, #f4f9ff 20%, #bcd8fb 52%, #8ec9f8 82%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 600;
}

.nav-link {
  position: relative;
  color: #8ea9c4;
  font-weight: 500;
  padding: 8px 12px;
  border-radius: 10px;
  line-height: 1.2;
  transition: color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}

.nav-link:hover {
  color: #eaf4ff;
  background: rgba(56, 189, 248, 0.06);
}

.active-nav-item {
  color: #f0f7ff !important;
  background: linear-gradient(180deg, rgba(56, 189, 248, 0.14), rgba(56, 189, 248, 0.04)) !important;
  box-shadow: inset 0 0 0 1px rgba(122, 202, 255, 0.14), 0 1px 16px rgba(56, 189, 248, 0.07);
}

.starlink-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 10px 20px;
  font-weight: 500;
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.13), rgba(56, 189, 248, 0.04));
  border: 1px solid rgba(125, 211, 252, 0.26);
  color: #d6edff;
  box-shadow: 0 6px 26px rgba(13, 98, 155, 0.14);
  transition: all 0.25s ease;
}

.starlink-btn:hover {
  border-color: rgba(125, 211, 252, 0.5);
  color: #fff;
  box-shadow: 0 8px 34px rgba(56, 189, 248, 0.18);
  transform: translateY(-2px);
}

.starlink-btn:active {
  transform: translateY(1px);
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.3);
}

.article-hero {
  position: relative;
  min-height: 440px;
  display: flex;
  align-items: center;
  background-image:
    radial-gradient(circle at 13% 22%, rgba(157, 218, 255, 0.15) 0, transparent 220px),
    radial-gradient(circle at 88% 72%, rgba(237, 197, 113, 0.08) 0, transparent 240px),
    linear-gradient(97deg, rgba(5, 10, 20, 0.82) 0%, rgba(6, 13, 23, 0.62) 54%, rgba(7, 15, 27, 0.84) 100%),
    url('/assets/images/backpic/back-1.png') center / cover no-repeat;
  border-bottom: 1px solid rgba(122, 202, 255, 0.13);
  padding: 188px 0 76px;
}

.article-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 18% 82%, rgba(255, 255, 255, 0.2) 0, transparent 2px),
    radial-gradient(circle at 26% 31%, rgba(177, 221, 255, 0.35) 0, transparent 2px),
    radial-gradient(circle at 79% 49%, rgba(200, 237, 255, 0.22) 0, transparent 2px),
    radial-gradient(circle at 68% 17%, rgba(227, 223, 180, 0.26) 0, transparent 1px),
    radial-gradient(circle at 88% 78%, rgba(147, 205, 255, 0.24) 0, transparent 2px);
  pointer-events: none;
}

.breadcrumb-item {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #6d89aa;
  font-size: 13px;
  letter-spacing: 0.03em;
}

.breadcrumb-item span + span::before {
  content: "›";
  margin-right: 10px;
  opacity: 0.5;
}

.article-category-tag {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.09);
  border: 1px solid rgba(96, 197, 252, 0.25);
  color: #a9e3ff;
  font-size: 13px;
}

.article-hero h1 {
  font-size: clamp(28px, 4.2vw, 54px);
  line-height: 1.28;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: #f4f9ff;
  margin-top: 20px;
  max-width: 860px;
}

.article-lead {
  color: #a9bed7;
  font-size: 16px;
  line-height: 2;
  max-width: 760px;
  border-left: 2px solid rgba(56, 189, 248, 0.32);
  padding-left: 18px;
  margin-top: 20px;
}

.article-meta-line {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  align-items: center;
  margin-top: 24px;
  color: #66809d;
  font-size: 13px;
}

.article-meta-line i {
  color: #4faedf;
  margin-right: 6px;
}

.article-main-section {
  position: relative;
  background: #060d18;
  padding: 64px 0 20px;
}

.article-readable {
  max-width: 780px;
  margin: 0 auto;
  padding: 0 28px;
}

.article-editor {
  background: rgba(13, 22, 35, 0.42);
  border: 1px solid rgba(148, 178, 210, 0.1);
  border-radius: var(--radius-lg);
  padding: clamp(20px, 4vw, 48px);
}

.article-editor-body {
  font-size: 17px;
  color: #cbdced;
}

.article-editor-body p {
  margin: 0 0 28px;
  line-height: 1.9;
}

.article-editor-body img {
  border-radius: 18px;
  margin: 40px 0;
  border: 1px solid var(--line);
}

.article-editor-body h2 {
  color: #ffffff;
  font-size: 26px;
  font-weight: 600;
  margin: 52px 0 22px;
  letter-spacing: -0.01em;
  line-height: 1.4;
  padding-left: 14px;
  border-left: 3px solid rgba(94, 200, 255, 0.55);
}

.article-editor-body h3 {
  color: #d9ecff;
  font-size: 21px;
  font-weight: 500;
  margin: 38px 0 18px;
}

.article-editor-body blockquote {
  background: rgba(56, 189, 248, 0.05);
  border-left: 3px solid rgba(220, 180, 100, 0.75);
  padding: 18px 24px;
  color: #9fb7d2;
  border-radius: 0 14px 14px 0;
  margin: 34px 0;
}

.article-editor-body ul,
.article-editor-body ol {
  padding-left: 1.4rem;
  margin: 22px 0 32px;
  display: grid;
  gap: 10px;
}

.article-editor-body ul li,
.article-editor-body ol li {
  color: #bfd0e3;
}

.article-editor-body a {
  color: #6fc9ff;
  border-bottom: 1px solid rgba(85, 196, 255, 0.3);
}

.article-editor-body a:hover {
  color: #b1e7ff;
}

.article-foot-note {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  justify-content: space-between;
  margin-top: 38px;
  padding-top: 28px;
  border-top: 1px dashed rgba(150, 184, 220, 0.12);
}

.article-foot-note .small-chip {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--line);
  color: #6e89a5;
  border-radius: 999px;
  padding: 6px 13px;
  font-size: 12px;
}

.not-found-card {
  border: 1px dashed rgba(120, 190, 250, 0.25);
  border-radius: 24px;
  background: rgba(13, 23, 36, 0.5);
  padding: 90px 30px;
  text-align: center;
  color: #8faacb;
}

.related-section {
  background: #081020;
  padding: 56px 0 20px;
}

.related-card-wrap {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 34px;
}

.related-card {
  background: rgba(16, 27, 42, 0.62);
  border: 1px solid rgba(149, 182, 216, 0.1);
  border-radius: 20px;
  overflow: hidden;
  background: linear-gradient(170deg, rgba(23, 42, 63, 0.7) 0%, rgba(12, 23, 38, 0.7) 100%);
  transition: all 0.35s ease;
}

.related-card:hover {
  transform: translateY(-4px);
  border-color: rgba(94, 202, 255, 0.26);
  box-shadow: 0 16px 44px rgba(2, 8, 14, 0.35);
}

.related-card img {
  width: 100%;
  height: 172px;
  object-fit: cover;
  display: block;
}

.related-card-body {
  padding: 22px 22px 24px;
}

.related-card-body h3 {
  color: #dbeefe;
  font-size: 18px;
  line-height: 1.5;
  font-weight: 600;
}

.related-card-body p {
  color: #7590ac;
  font-size: 13px;
  line-height: 1.8;
  margin-top: 10px;
}

.related-card-body .related-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  color: #77cbf8;
  font-size: 13px;
}

.related-card-body .related-link i {
  transition: transform 0.2s ease;
}

.related-card:hover .related-link i {
  transform: translateX(4px);
}

.article-cta {
  padding: 80px 0 88px;
  background-image:
    linear-gradient(135deg, rgba(5, 11, 22, 0.87), rgba(7, 18, 31, 0.92)),
    url('/assets/images/backpic/back-3.webp') center / cover no-repeat;
  position: relative;
  border-top: 1px solid rgba(103, 155, 217, 0.09);
}

.article-cta-inner {
  max-width: 920px;
  margin: 0 auto;
  text-align: center;
  padding: 0 24px;
}

.article-cta h2 {
  color: #eef6ff;
  font-size: clamp(24px, 3.2vw, 40px);
  line-height: 1.45;
  font-weight: 600;
}

.article-cta p {
  color: #7894b2;
  margin-top: 18px;
  line-height: 2;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-top: 34px;
}

.cta-primary-btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: #04111d;
  font-weight: 600;
  background: linear-gradient(135deg, #a3ddff 0%, #65c7f7 100%);
  padding: 14px 26px;
  border-radius: 12px;
  border: 1px solid rgba(169, 231, 255, 0.6);
  box-shadow: 0 8px 30px rgba(56, 189, 248, 0.35);
  transition: all 0.25s ease;
}

.cta-primary-btn:hover {
  background: linear-gradient(135deg, #b7e7ff 0%, #7ed6ff 100%);
  box-shadow: 0 10px 36px rgba(86, 205, 255, 0.4);
  transform: translateY(-2px);
}

.cta-primary-btn:active {
  transform: translateY(1px);
}

.cta-ghost-btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 14px 24px;
  border-radius: 12px;
  color: #a7d9f5;
  border: 1px solid rgba(141, 210, 255, 0.28);
  background: rgba(56, 189, 248, 0.05);
  transition: all 0.25s;
}

.cta-ghost-btn:hover {
  color: #fff;
  border-color: rgba(141, 210, 255, 0.45);
  background: rgba(56, 189, 248, 0.1);
}

.mobile-panel {
  background: rgba(7, 13, 23, 0.96);
  border-top: 1px solid rgba(150, 184, 220, 0.1);
}

.footer-bg {
  background: #03070f;
  position: relative;
  border-top: 1px solid rgba(124, 156, 196, 0.12);
}

@media (min-width: 1024px) {
  .article-main-section {
    padding-top: 80px;
  }
}

@media (max-width: 1023px) {
  .related-card-wrap {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  .article-hero {
    min-height: auto;
    padding-top: 148px;
    padding-bottom: 54px;
  }

  .article-readable {
    padding: 0 18px;
  }

  .article-editor {
    padding: 18px;
  }

  .related-card-wrap {
    grid-template-columns: 1fr;
  }

  .article-main-section {
    padding-top: 46px;
  }

  .article-cta {
    padding: 60px 0 66px;
  }

  .cta-actions a {
    width: 100%;
    justify-content: center;
  }
}

/* roulang page: category1 */
:root {
            --bg-void: #04070D;
            --bg-night: #050A14;
            --surface: rgba(17, 30, 48, 0.62);
            --surface-light: rgba(22, 39, 61, 0.72);
            --text-main: #E9F0FA;
            --text-second: #A5B8CE;
            --text-muted: #647C99;
            --line-white: rgba(148, 197, 255, 0.14);
            --radius-card: 22px;
            --radius-btn: 10px;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Noto Sans SC', 'HarmonyOS Sans SC', 'MiSans', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            background-color: var(--bg-night);
            color: var(--text-main);
            line-height: 1.75;
            overflow-x: hidden;
            min-height: 100vh;
        }

        body::before {
            content: '';
            position: fixed;
            inset: 0;
            z-index: 0;
            pointer-events: none;
            background:
                radial-gradient(1px 1px at 12% 18%, rgba(255, 255, 255, 0.16), transparent 100%),
                radial-gradient(1px 1px at 28% 66%, rgba(200, 226, 255, 0.18), transparent 100%),
                radial-gradient(1.5px 1.5px at 41% 34%, rgba(255, 255, 255, 0.12), transparent 100%),
                radial-gradient(1px 1px at 56% 82%, rgba(255, 255, 255, 0.16), transparent 100%),
                radial-gradient(1px 1px at 67% 14%, rgba(210, 236, 255, 0.22), transparent 100%),
                radial-gradient(1.2px 1.2px at 73% 49%, rgba(255, 255, 255, 0.18), transparent 100%),
                radial-gradient(1px 1px at 84% 72%, rgba(230, 244, 255, 0.16), transparent 100%),
                radial-gradient(1.5px 1.5px at 8% 91%, rgba(255, 255, 255, 0.12), transparent 100%),
                radial-gradient(1800px 900px at 85% -10%, rgba(28, 78, 133, 0.16), transparent 60%),
                radial-gradient(1000px 600px at 10% 110%, rgba(42, 102, 192, 0.13), transparent 60%);
            background-size: 300px 300px, 260px 260px, 320px 320px, 280px 280px, 240px 240px, 380px 300px, 300px 300px, 340px 340px, 100%, 100%;
        }

        * {
            box-sizing: border-box;
        }

        img {
            max-width: 100%;
            object-fit: cover;
        }

        a,
        button {
            transition: color .2s ease, background-color .2s ease, border-color .2s ease, box-shadow .2s ease, transform .15s ease, opacity .2s ease;
        }

        a:focus-visible,
        button:focus-visible {
            outline: 2px solid rgba(148, 197, 255, 0.7);
            outline-offset: 3px;
        }

        main,
        footer {
            position: relative;
            z-index: 1;
        }

        .container {
            max-width: 76rem;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        @media (min-width: 1024px) {
            .container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        #starlight-nav {
            background: linear-gradient(180deg, rgba(5, 10, 20, 0.96), rgba(5, 10, 20, 0.72));
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(148, 163, 184, 0.08);
            transition: border-color .25s ease, background-color .25s ease;
        }

        #starlight-nav.scrolled {
            background: linear-gradient(180deg, rgba(5, 10, 20, 0.98), rgba(6, 14, 26, 0.86));
            border-bottom-color: rgba(125, 180, 255, 0.18);
        }

        .nav-link {
            color: #A5B8CE;
            font-size: 15px;
            line-height: 1;
            padding: 10px 12px;
            border-radius: 12px;
            letter-spacing: 0.01em;
            border: 1px solid transparent;
        }

        .nav-link:hover {
            color: #ffffff;
            background: rgba(148, 197, 255, 0.08);
            border-color: rgba(148, 197, 255, 0.08);
        }

        .nav-link.active-nav-item {
            color: #fff;
            font-weight: 500;
            background: linear-gradient(0deg, rgba(14, 165, 233, 0.16), rgba(14, 165, 233, 0.04));
            border: 1px solid rgba(56, 189, 248, 0.25);
            box-shadow: inset 0 -2px 0 rgba(125, 211, 252, 0.85), 0 0 0 rgba(26, 145, 220, 0);
        }

        .starlink-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.35rem;
            background: linear-gradient(110deg, rgba(14, 116, 190, 0.24), rgba(8, 28, 50, 0.55));
            border: 1px solid rgba(125, 195, 255, 0.5);
            color: #F4FBFF;
            padding: 0.7rem 1.2rem;
            border-radius: 12px;
            font-size: 15px;
            line-height: 1;
            cursor: pointer;
            box-shadow: 0 8px 28px -10px rgba(14, 165, 233, 0.42);
        }

        .starlink-btn:hover {
            border-color: rgba(155, 213, 255, 0.85);
            background: linear-gradient(110deg, rgba(28, 160, 240, 0.3), rgba(13, 46, 82, 0.7));
            box-shadow: 0 10px 30px -8px rgba(56, 189, 248, 0.52);
            transform: translateY(-2px);
        }

        .starlink-btn:active {
            transform: translateY(0);
            box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.2);
        }

        .basic-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            padding: 0.85rem 1.4rem;
            font-size: 15px;
            line-height: 1.2;
            cursor: pointer;
            border: 1px solid transparent;
            text-decoration: none;
        }

        .btn-primary {
            background: linear-gradient(145deg, rgba(18, 144, 224, 0.34), rgba(7, 36, 70, 0.75));
            border: 1px solid rgba(125, 200, 255, 0.56);
            color: #ffffff;
            box-shadow: 0 12px 34px -14px rgba(0, 182, 255, 0.56);
        }

        .btn-primary:hover {
            border-color: rgba(160, 216, 255, 0.92);
            background: linear-gradient(145deg, rgba(28, 167, 253, 0.45), rgba(10, 52, 96, 0.8));
            transform: translateY(-3px);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.3);
        }

        .btn-ghost {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(148, 163, 184, 0.3);
            color: #C7D6EA;
            box-shadow: none;
        }

        .btn-ghost:hover {
            border-color: rgba(165, 216, 255, 0.75);
            color: #ffffff;
            background: rgba(165, 216, 255, 0.06);
        }

        .btn-ghost:active {
            transform: translateY(1px);
            box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.22);
        }

        .glass-panel {
            background: linear-gradient(150deg, rgba(18, 35, 57, 0.72), rgba(7, 14, 26, 0.78));
            border: 1px solid rgba(148, 197, 255, 0.12);
            border-radius: 24px;
            box-shadow: 0 18px 44px -22px rgba(0, 0, 0, 0.7), inset 0 1px 0 0 rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .glass-card {
            background: linear-gradient(160deg, rgba(24, 45, 72, 0.64), rgba(8, 15, 28, 0.8));
            border: 1px solid rgba(148, 197, 255, 0.1);
            border-radius: 20px;
            box-shadow: 0 16px 28px -20px rgba(0, 0, 0, 0.62);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .glass-card:hover {
            transform: translateY(-4px);
            border-color: rgba(148, 205, 255, 0.32);
            box-shadow: 0 22px 38px -18px rgba(0, 0, 0, 0.68), 0 0 0 1px rgba(160, 215, 255, 0.04);
            background: linear-gradient(160deg, rgba(27, 55, 87, 0.75), rgba(10, 20, 36, 0.85));
        }

        .chip {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            padding: 0.32rem 0.7rem;
            border-radius: 999px;
            font-size: 12px;
            color: #BDE4FF;
            background: rgba(56, 189, 248, 0.1);
            border: 1px solid rgba(56, 189, 248, 0.18);
            line-height: 1.4;
        }

        .gold-chip {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            padding: 0.32rem 0.7rem;
            border-radius: 999px;
            font-size: 12px;
            color: #FFE1A6;
            background: rgba(245, 194, 107, 0.09);
            border: 1px solid rgba(245, 194, 107, 0.2);
            line-height: 1.4;
        }

        .section-title {
            font-size: 2rem;
            line-height: 1.3;
            letter-spacing: -0.02em;
            font-weight: 700;
            color: #EAF4FF;
        }

        .section-subtitle {
            color: var(--text-second);
            font-size: 16px;
            line-height: 1.9;
            max-width: 68ch;
        }

        .subsection-title {
            font-size: 1.18rem;
            line-height: 1.45;
            font-weight: 600;
            color: #DCEAFB;
            letter-spacing: -0.01em;
        }

        .eyebrow {
            letter-spacing: 0.28em;
            font-size: 0.74rem;
            color: #8FD8FF;
            text-transform: uppercase;
        }

        .text-skyline {
            background: linear-gradient(100deg, #F8FDFF 4%, #BFE3FF 37%, #E7F4FF 72%, #6BB9F0 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: #F8FDFF;
        }

        .star-word {
            text-shadow: 0 0 40px rgba(125, 200, 255, 0.35);
        }

        .hero-overlay {
            background:
                radial-gradient(circle at 75% 25%, rgba(56, 170, 220, 0.15), transparent 44%),
                radial-gradient(circle at 20% 85%, rgba(56, 189, 248, 0.08), transparent 46%),
                linear-gradient(180deg, rgba(5, 10, 20, 0.76), rgba(5, 10, 20, 0.88));
        }

        .toc-item {
            display: flex;
            align-items: center;
            color: #A5B8CE;
            padding: 0.72rem 0.9rem;
            border-left: 2px solid rgba(148, 197, 255, 0.22);
            text-decoration: none;
            font-size: 14px;
            line-height: 1.5;
            background: transparent;
            border-top-right-radius: 8px;
            border-bottom-right-radius: 8px;
        }

        .toc-item:hover {
            background: rgba(148, 197, 255, 0.05);
            border-left-color: rgba(148, 197, 255, 0.6);
            color: #F4FAFF;
        }

        .prose-copy p {
            color: #AFC4DC;
            margin-bottom: 1.2rem;
            line-height: 2.08;
            font-size: 15px;
            letter-spacing: 0.01em;
        }

        .prose-copy strong {
            color: #E8F3FF;
            font-weight: 600;
        }

        .prose-copy h3 {
            font-size: 1.3rem;
            color: #EAF4FF;
            margin: 1.8rem 0 0.85rem;
            font-weight: 600;
            letter-spacing: -0.01em;
            line-height: 1.5;
        }

        .faq-item {
            border-bottom: 1px solid rgba(148, 163, 184, 0.16);
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 1rem;
            width: 100%;
            text-align: left;
            padding: 1.3rem 0.6rem 1.2rem 0;
            background: transparent;
            border: 0;
            cursor: pointer;
            color: #E4F0FF;
            font-size: 16px;
            font-weight: 500;
            line-height: 1.55;
            min-height: 54px;
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 34px;
            height: 34px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: #8FD8FF;
            background: rgba(56, 189, 248, 0.08);
            border: 1px solid rgba(56, 189, 248, 0.2);
            transition: transform .25s ease, color .25s ease, background-color .25s ease;
        }

        .faq-open {
            max-height: 0;
            opacity: 0;
            overflow: hidden;
            transition: max-height .35s ease, opacity .3s ease, padding-bottom .3s ease;
        }

        .faq-item.open .faq-open {
            max-height: 540px;
            opacity: 1;
            padding-bottom: 1.4rem;
        }

        .faq-item.open .faq-icon {
            transform: rotate(135deg);
            color: #FFFFFF;
            background: rgba(56, 189, 248, 0.24);
            border-color: rgba(125, 213, 255, 0.55);
        }

        .footer-bg {
            background: linear-gradient(180deg, #050A14, #020409);
            border-top: 1px solid rgba(148, 163, 184, 0.1);
        }

        .side-bookmark {
            border-left: 1px solid rgba(125, 180, 255, 0.18);
        }

        .caption-line {
            color: #647C99;
            font-size: 12px;
            line-height: 1.6;
        }

        .floating-cta {
            position: fixed;
            right: 1.2rem;
            bottom: 1.6rem;
            z-index: 55;
            border-radius: 999px;
        }

/* roulang page: category2 */
:root {
            --bg-deep: #060B14;
            --bg-panel: rgba(13, 27, 43, 0.66);
            --bg-panel-soft: rgba(15, 30, 49, 0.48);
            --stroke: rgba(143, 169, 196, 0.14);
            --stroke-bright: rgba(173, 205, 237, 0.32);
            --sky: #94c3ff;
            --sky-soft: rgba(125, 191, 255, 0.32);
            --moon: #e9f1fa;
            --amber: #f2bd72;
            --text: #e7eef8;
            --muted: #a5b8cf;
            --faint: #64809c;
            --shadow: 0 24px 70px rgba(2, 6, 14, 0.5);
            --radius-xl: 24px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --font-sans: "Noto Sans SC", "HarmonyOS Sans SC", "MiSans", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--bg-deep);
            background-image:
                radial-gradient(ellipse 55% 42% at 85% -5%, rgba(46, 116, 218, 0.1), transparent),
                radial-gradient(ellipse 40% 35% at 8% 15%, rgba(57, 137, 204, 0.05), transparent),
                linear-gradient(180deg, #070D18 0%, #050A14 100%);
            color: var(--text);
            line-height: 1.75;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }
        ::selection {
            background: rgba(94, 160, 255, 0.3);
            color: #fff;
        }
        :focus-visible {
            outline: 2px solid rgba(190, 220, 255, 0.85);
            outline-offset: 3px;
            border-radius: 6px;
        }

        #starlight-nav {
            background: linear-gradient(180deg, rgba(4, 10, 18, 0.74) 0%, rgba(4, 10, 18, 0.15) 100%);
            border-bottom: 1px solid transparent;
            transition: background 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
        }
        #starlight-nav.scrolled {
            background: rgba(5, 12, 21, 0.86);
            -webkit-backdrop-filter: blur(18px);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(151, 186, 222, 0.12);
            box-shadow: 0 12px 32px rgba(2, 6, 14, 0.22);
        }
        .nav-link {
            position: relative;
            padding: 7px 15px;
            border-radius: 11px;
            color: #a7b9cf;
            font-weight: 400;
            letter-spacing: 0.02em;
            transition: color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
        }
        .nav-link:hover {
            color: #f0f6ff;
            background: rgba(138, 181, 255, 0.1);
        }
        .nav-link.active-nav-item {
            color: #ffffff;
            background: rgba(113, 191, 255, 0.1);
            box-shadow: inset 0 0 0 1px rgba(139, 196, 255, 0.22), 0 6px 16px rgba(22, 78, 150, 0.12);
        }
        .starlink-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 7px;
            border-radius: 10px;
            background: linear-gradient(135deg, rgba(75, 146, 255, 0.2), rgba(68, 122, 218, 0.12));
            border: 1px solid rgba(139, 196, 255, 0.4);
            color: #eef7ff;
            padding: 10px 18px;
            font-size: 15px;
            letter-spacing: 0.02em;
            box-shadow: 0 0 20px rgba(60, 120, 235, 0.12), inset 0 0 12px rgba(150, 205, 255, 0.06);
            transition: transform 0.2s ease, box-shadow 0.3s ease, background 0.3s ease;
        }
        .starlink-btn:hover {
            background: linear-gradient(135deg, rgba(90, 166, 255, 0.3), rgba(76, 133, 230, 0.18));
            box-shadow: 0 0 28px rgba(66, 143, 255, 0.2), inset 0 0 16px rgba(164, 210, 255, 0.1);
            transform: translateY(-1px);
        }
        .starlink-btn:active {
            transform: translateY(1px) scale(0.98);
            box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.42);
        }
        .logo-white {
            color: #eaf2fc;
            text-shadow: 0 0 18px rgba(150, 201, 255, 0.35);
            letter-spacing: 0.05em;
        }

        .glass-panel {
            background: linear-gradient(145deg, rgba(22, 41, 66, 0.62), rgba(8, 18, 33, 0.54));
            border: 1px solid var(--stroke);
            border-radius: var(--radius-xl);
            -webkit-backdrop-filter: blur(12px);
            backdrop-filter: blur(12px);
            box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, 0.05);
            position: relative;
        }
        .glass-panel::before {
            content: "";
            position: absolute;
            inset: 0;
            border-radius: inherit;
            background: linear-gradient(135deg, rgba(176, 216, 255, 0.06), transparent 45%);
            pointer-events: none;
        }
        .hero-bg {
            background-image: linear-gradient(180deg, rgba(3, 8, 16, 0.32) 0%, rgba(5, 11, 21, 0.64) 35%, #060C17 92%), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
        }
        .eyebrow-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(80, 178, 255, 0.1);
            border: 1px solid rgba(144, 200, 255, 0.24);
            color: #b7dcff;
            border-radius: 999px;
            padding: 6px 14px;
            font-size: 13px;
            letter-spacing: 0.12em;
            backdrop-filter: blur(6px);
        }
        .section-kicker {
            color: #75aeeb;
            font-size: 13px;
            letter-spacing: 0.18em;
            text-transform: none;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .section-kicker::before {
            content: "";
            width: 26px;
            height: 1px;
            background: linear-gradient(90deg, rgba(128, 187, 255, 0.4), transparent);
        }
        .title-glow {
            color: #eaf1fa;
            text-shadow: 0 0 32px rgba(118, 171, 255, 0.16);
            letter-spacing: 0.01em;
        }
        .text-muted-2 {
            color: var(--muted);
        }
        .text-faint-2 {
            color: var(--faint);
        }

        .hover-lift {
            transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease, background 0.35s ease;
        }
        .hover-lift:hover {
            transform: translateY(-5px);
            border-color: rgba(147, 207, 255, 0.28);
            box-shadow: 0 22px 54px rgba(2, 8, 18, 0.46);
            background: rgba(18, 35, 57, 0.76);
        }

        .enum-card {
            background: linear-gradient(145deg, rgba(18, 34, 56, 0.58), rgba(9, 20, 35, 0.48));
            border: 1px solid rgba(140, 168, 197, 0.12);
            border-radius: var(--radius-md);
            padding: 24px;
            position: relative;
            transition: all 0.35s ease;
        }
        .enum-card:hover {
            border-color: rgba(150, 208, 255, 0.28);
            transform: translateY(-3px);
            box-shadow: 0 18px 44px rgba(2, 7, 14, 0.36);
        }
        .enum-num {
            font-size: 13px;
            letter-spacing: 0.08em;
            color: #6483a5;
        }

        .toc-wrap {
            background: linear-gradient(150deg, rgba(15, 29, 48, 0.72), rgba(8, 17, 31, 0.52));
            border: 1px solid var(--stroke);
            border-radius: var(--radius-xl);
            backdrop-filter: blur(12px);
            box-shadow: 0 24px 60px rgba(3, 8, 16, 0.3);
        }
        .toc-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: 12px;
            color: #92a7bf;
            font-size: 14px;
            transition: background 0.25s ease, color 0.25s ease, transform 0.25s ease;
        }
        .toc-link span {
            color: #587693;
            font-size: 12px;
            letter-spacing: 0.08em;
        }
        .toc-link:hover {
            background: rgba(108, 177, 255, 0.09);
            color: #dbe9f8;
            transform: translateX(2px);
        }
        .toc-link.active {
            background: rgba(108, 177, 255, 0.12);
            color: #ffffff;
            box-shadow: inset 0 0 0 1px rgba(118, 186, 255, 0.16);
        }
        .image-frame {
            border: 1px solid rgba(142, 168, 197, 0.18);
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: 0 22px 50px rgba(1, 6, 14, 0.48);
            background: #0d1826;
        }
        .image-frame img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .image-caption {
            font-size: 12px;
            color: var(--faint);
            letter-spacing: 0.03em;
        }

        .param-item {
            border-bottom: 1px solid rgba(139, 165, 192, 0.1);
            padding: 20px 2px;
            display: grid;
            grid-template-columns: 108px 1fr;
            gap: 18px;
            align-items: start;
        }
        .param-item:last-child {
            border-bottom: none;
        }
        .param-label {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #dbeafa;
            font-weight: 500;
        }

        .step-footer {
            display: grid;
            grid-template-columns: 46px 1fr;
            gap: 14px;
        }
        .step-index {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(104, 174, 255, 0.12);
            color: #6fb4ff;
            border: 1px solid rgba(106, 176, 255, 0.24);
            font-weight: 600;
        }

        .faq-wrap {
            max-width: 900px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid rgba(138, 168, 198, 0.14);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            gap: 18px;
            padding: 20px 12px;
            min-height: 60px;
            text-align: left;
            color: #dfeaf7;
            font-size: 16px;
            font-weight: 400;
            background: transparent;
            border: none;
            cursor: pointer;
            transition: color 0.3s ease;
        }
        .faq-question:hover {
            color: #bcdcff;
        }
        .faq-icon {
            width: 30px;
            height: 30px;
            border-radius: 50%;
            border: 1px solid rgba(137, 188, 244, 0.34);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #8bc0ff;
            background: rgba(94, 160, 241, 0.08);
            transition: transform 0.35s ease, background 0.3s ease;
            flex-shrink: 0;
        }
        .faq-icon i {
            transition: transform 0.35s ease;
        }
        .faq-item.open .faq-icon {
            background: rgba(113, 193, 255, 0.18);
            transform: rotate(180deg);
        }
        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }
        .faq-answer {
            padding: 0 42px 24px 58px;
            color: #9fb4cb;
            font-size: 15px;
            line-height: 1.9;
        }
        @media (max-width: 640px) {
            .faq-answer {
                padding-left: 44px;
            }
        }

        .form-control {
            width: 100%;
            border-radius: 12px;
            background: rgba(9, 19, 32, 0.72);
            border: 1px solid rgba(153, 181, 212, 0.2);
            padding: 12px 15px;
            color: #eaeff7;
            font-size: 14px;
            transition: border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
        }
        .form-control::placeholder {
            color: #6b83a0;
        }
        .form-control:hover {
            border-color: rgba(160, 195, 230, 0.35);
        }
        .form-control:focus {
            outline: none;
            border-color: rgba(128, 195, 255, 0.75);
            box-shadow: 0 0 0 3px rgba(102, 173, 255, 0.16);
            background: rgba(12, 24, 40, 0.86);
        }
        select.form-control option {
            background: #0c1726;
            color: #dbe8f5;
        }
        .footer-bg {
            background: #04070d;
            border-top: 1px solid rgba(149, 174, 204, 0.08);
        }
        .footer-bg a {
            transition: color 0.25s ease;
        }

        .float-cta {
            opacity: 0;
            pointer-events: none;
            transform: translateY(18px);
            transition: opacity 0.4s ease, transform 0.4s ease;
        }
        .float-cta.show {
            opacity: 1;
            pointer-events: auto;
            transform: translateY(0);
        }

        .hero-star-field {
            position: absolute;
            inset: 0;
            background-image:
                radial-gradient(circle at 22% 35%, rgba(255, 255, 255, 0.28) 0.6px, transparent 1.6px),
                radial-gradient(circle at 57% 18%, rgba(255, 255, 255, 0.22) 0.8px, transparent 1.8px),
                radial-gradient(circle at 76% 56%, rgba(215, 236, 255, 0.34) 0.7px, transparent 1.7px),
                radial-gradient(circle at 87% 76%, rgba(255, 255, 255, 0.16) 0.8px, transparent 1.9px),
                radial-gradient(circle at 13% 72%, rgba(255, 255, 255, 0.18) 0.5px, transparent 1.3px);
            opacity: 0.35;
            pointer-events: none;
        }

        .cta-bg {
            background-image: linear-gradient(180deg, rgba(5, 11, 21, 0.86), rgba(5, 11, 21, 0.78)), url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
        }

        @media (max-width: 767px) {
            .param-item {
                grid-template-columns: 1fr;
                gap: 6px;
            }
            .enum-card {
                padding: 20px;
            }
        }