/* roulang page: index */
:root {
        --pine-950: #0C211A;
        --pine-900: #123026;
        --pine-700: #1D4937;
        --paper: #F4F1E8;
        --paper-deep: #E9E4D8;
        --surface: #FFFFFF;
        --accent: #F05A28;
        --accent-deep: #D94A1E;
        --text-main: #1A211D;
        --text-muted: #68736B;
        --line: #DCD5C8;
        --radius-sm: 8px;
        --radius-md: 14px;
        --radius-full: 999px;
        --shadow-card: 0 18px 40px -18px rgba(12, 33, 26, 0.22);
    }
    *,
    *::before,
    *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }
    html {
        scroll-behavior: smooth;
    }
    body {
        font-family: 'PingFang SC', 'HarmonyOS Sans SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
        background: var(--paper);
        color: var(--text-main);
        line-height: 1.75;
        -webkit-font-smoothing: antialiased;
        overflow-x: hidden;
    }
    img {
        display: block;
        max-width: 100%;
    }
    a {
        color: inherit;
        text-decoration: none;
    }
    button,
    input,
    select,
    textarea {
        font: inherit;
        border: none;
        outline: none;
        background: none;
    }
    :focus-visible {
        outline: 3px solid rgba(240, 90, 40, 0.35);
        outline-offset: 2px;
    }
    .container-app {
        width: 100%;
        max-width: 1280px;
        margin-left: auto;
        margin-right: auto;
        padding-left: 20px;
        padding-right: 20px;
    }
    @media (min-width: 768px) {
        .container-app {
            padding-left: 28px;
            padding-right: 28px;
        }
    }
    .section-pad {
        padding-top: 4.5rem;
        padding-bottom: 4.5rem;
    }
    @media (min-width: 768px) {
        .section-pad {
            padding-top: 6rem;
            padding-bottom: 6rem;
        }
    }
    .overline-label {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-size: 0.8rem;
        font-weight: 700;
        letter-spacing: 0.18em;
        color: var(--pine-900);
        text-transform: none;
    }
    .overline-label::before {
        content: '';
        width: 22px;
        height: 2px;
        background: var(--accent);
        display: inline-block;
    }
    .section-title {
        font-size: clamp(1.8rem, 3.6vw, 3rem);
        font-weight: 800;
        line-height: 1.2;
        letter-spacing: -0.02em;
        color: var(--pine-950);
    }
    .section-desc {
        font-size: 1rem;
        line-height: 1.8;
        color: var(--text-muted);
    }
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        min-height: 46px;
        padding: 0 22px;
        border-radius: var(--radius-full);
        font-weight: 700;
        font-size: 0.95rem;
        line-height: 1;
        transition: all .25s cubic-bezier(.25, .7, .35, 1);
        cursor: pointer;
        white-space: nowrap;
    }
    .btn-pine {
        background: var(--pine-900);
        color: #fff;
    }
    .btn-pine:hover {
        background: var(--pine-700);
        transform: translateY(-2px);
        box-shadow: 0 12px 22px -8px rgba(18, 48, 38, 0.4);
    }
    .btn-accent {
        background: var(--accent);
        color: var(--pine-950);
    }
    .btn-accent:hover {
        background: #ff6a3a;
        transform: translateY(-2px);
        box-shadow: 0 14px 22px -10px rgba(240, 90, 40, 0.5);
    }
    .btn-ghost {
        border: 1px solid rgba(255, 255, 255, .45);
        color: #fff;
        background: transparent;
    }
    .btn-ghost:hover {
        background: rgba(255, 255, 255, .12);
        border-color: #fff;
    }
    .btn-light-paper {
        background: var(--paper);
        color: var(--pine-950);
        border: 1px solid var(--line);
    }
    .btn-light-paper:hover {
        background: #fff;
        box-shadow: var(--shadow-card);
        transform: translateY(-2px);
    }
    .input-base {
        width: 100%;
        height: 48px;
        border-radius: var(--radius-sm);
        border: 1px solid var(--line);
        padding: 0 14px;
        font-size: 1rem;
        color: var(--text-main);
        background: #fff;
        transition: border-color .2s, box-shadow .2s;
    }
    .input-base::placeholder {
        color: #9a9f9a;
    }
    .input-base:focus {
        border-color: var(--accent);
        box-shadow: 0 0 0 3px rgba(240, 90, 40, .12);
    }
    .tag-pill {
        display: inline-flex;
        align-items: center;
        gap: 4px;
        padding: 4px 12px;
        border-radius: var(--radius-full);
        background: rgba(240, 90, 40, .12);
        color: var(--accent-deep);
        font-size: .78rem;
        font-weight: 700;
        letter-spacing: .04em;
    }
    .tag-pine {
        background: var(--pine-900);
        color: #fff;
    }
    .text-muted {
        color: var(--text-muted);
    }
    .line-item {
        border-top: 1px solid var(--line);
    }
    .card-paper {
        background: var(--surface);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-card);
    }
    .nav-underline {
        position: relative;
        display: inline-flex;
        align-items: center;
        padding-top: 6px;
        padding-bottom: 6px;
        font-weight: 600;
        transition: color .2s;
    }
    .nav-underline::after {
        content: '';
        position: absolute;
        left: 0;
        bottom: 0;
        height: 2px;
        width: 100%;
        background: var(--accent);
        transform: scaleX(0);
        transform-origin: left center;
        transition: transform .3s ease-out;
    }
    .nav-underline:hover::after,
    .nav-underline.active::after {
        transform: scaleX(1);
    }
    .nav-underline.active {
        color: var(--pine-950);
    }
    .site-header {
        position: sticky;
        top: 0;
        z-index: 60;
        background: rgba(244, 241, 232, .87);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid rgba(220, 213, 200, .8);
        transition: box-shadow .2s;
    }
    .site-header.scrolled {
        box-shadow: 0 8px 24px rgba(12, 33, 26, .06);
    }
    .hero-wrap {
        background-color: var(--pine-950);
        color: #fff;
    }
    .hero-bg {
        background-size: cover;
        background-position: center;
        opacity: .32;
        mix-blend-mode: luminosity;
    }
    .feature-cell {
        transition: background .25s;
        padding: 30px 8px;
    }
    .feature-cell:hover {
        background: rgba(255, 255, 255, .4);
    }
    .feature-num {
        font-family: 'Inter', 'Roboto Mono', monospace;
        font-size: .9rem;
        color: var(--accent);
        font-weight: 800;
        letter-spacing: .1em;
    }
    .gallery-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        grid-auto-rows: 150px;
        gap: 14px;
        grid-auto-flow: dense;
    }
    .gallery-figure {
        position: relative;
        overflow: hidden;
        border-radius: 16px;
        background: var(--pine-900);
        min-height: 100%;
    }
    .gallery-figure img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform .5s ease-out, filter .4s;
        filter: saturate(.86);
    }
    .gallery-figure:hover img {
        transform: scale(1.05);
        filter: saturate(1.08);
    }
    .gallery-figure::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(0deg, rgba(12, 33, 26, .72) 0%, rgba(12, 33, 26, .05) 55%, rgba(12, 33, 26, .12) 100%);
        pointer-events: none;
    }
    .gallery-caption {
        position: absolute;
        left: 14px;
        right: 14px;
        bottom: 12px;
        z-index: 2;
        color: #fff;
        transition: transform .3s;
    }
    .gallery-figure:hover .gallery-caption {
        transform: translateY(-4px);
    }
    .g-a {
        grid-column: span 2;
        grid-row: span 2;
    }
    .g-b {
        grid-column: span 1;
        grid-row: span 2;
    }
    .g-c {
        grid-column: span 1;
        grid-row: span 1;
    }
    .g-d {
        grid-column: span 2;
        grid-row: span 1;
    }
    .news-card {
        display: flex;
        flex-direction: column;
        height: 100%;
        border-radius: var(--radius-md);
        background: rgba(255, 255, 255, .62);
        border: 1px solid rgba(220, 213, 200, .8);
        padding: 22px 20px;
        transition: border .25s, background .25s, transform .25s;
    }
    .news-card:hover {
        background: #fff;
        border-color: var(--pine-700);
        transform: translateY(-4px);
        box-shadow: var(--shadow-card);
    }
    .news-card .text-link {
        margin-top: auto;
    }
    .text-link {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        color: var(--pine-900);
        font-weight: 700;
    }
    .text-link span {
        transition: transform .25s;
    }
    .text-link:hover span {
        transform: translateX(5px);
    }
    .text-link:hover {
        color: var(--accent-deep);
    }
    details.faq-item {
        border-bottom: 1px solid var(--line);
    }
    details.faq-item[open] {
        background: rgba(255, 255, 255, .35);
    }
    details.faq-item summary {
        list-style: none;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 20px;
        cursor: pointer;
        padding: 24px 18px;
        font-weight: 700;
        font-size: 1.02rem;
        color: var(--pine-950);
        transition: padding-left .2s;
    }
    details.faq-item summary::-webkit-details-marker {
        display: none;
    }
    details.faq-item summary::after {
        content: '+';
        font-size: 1.8rem;
        font-weight: 400;
        color: var(--accent);
        line-height: 1;
        transition: transform .25s;
    }
    details.faq-item[open] summary::after {
        transform: rotate(45deg);
    }
    details.faq-item .faq-answer {
        padding: 0 18px 24px;
        color: var(--text-muted);
        max-width: 860px;
    }
    .footer-bg {
        background: var(--pine-950);
        color: rgba(255, 255, 255, .78);
    }
    .footer-link {
        color: rgba(255, 255, 255, .72);
        transition: color .2s;
    }
    .footer-link:hover {
        color: #fff;
    }
    .footer-underline {
        display: inline-block;
        background: rgba(240, 90, 40, .25);
    }
    .hero-title {
        font-size: clamp(2.5rem, 6vw, 4.4rem);
        font-weight: 800;
        line-height: 1.08;
        letter-spacing: -0.02em;
        color: #fff;
    }
    .logo-badge {
        width: 36px;
        height: 36px;
        border-radius: 10px;
        background: var(--pine-900);
        display: inline-flex;
        align-items: center;
        justify-content: center;
        color: var(--accent);
        flex-shrink: 0;
    }
    .brand-word {
        font-weight: 800;
        color: var(--pine-950);
        line-height: 1.2;
        letter-spacing: -0.01em;
    }
    .empty-news {
        grid-column: 1 / -1;
        text-align: center;
        padding: 52px 20px;
        background: rgba(255, 255, 255, .45);
        border: 1px dashed var(--line);
        border-radius: var(--radius-md);
        color: var(--text-muted);
    }
    .deco-word {
        position: absolute;
        user-select: none;
        pointer-events: none;
        font-size: clamp(6rem, 15vw, 14rem);
        font-weight: 900;
        line-height: 1;
        letter-spacing: -0.05em;
        color: transparent;
        -webkit-text-stroke: 1px rgba(18, 48, 38, .06);
        z-index: 0;
    }
    .topbar-count {
        font-family: 'Inter', 'Roboto Mono', monospace;
        font-variant-numeric: tabular-nums;
        letter-spacing: .05em;
        background: rgba(255, 255, 255, .12);
        border-radius: 6px;
        padding: 2px 6px;
        min-width: 42px;
        text-align: center;
    }
    .login-panel {
        position: relative;
        background: #fff;
        border-radius: 20px;
        box-shadow: 0 30px 80px -20px rgba(0, 0, 0, .35);
        overflow: hidden;
        color: var(--text-main);
    }
    .login-panel::before {
        content: '';
        display: block;
        height: 4px;
        background: linear-gradient(90deg, var(--accent) 0%, var(--accent) 30%, var(--pine-900) 30%, var(--pine-900) 100%);
    }
    .tab-line {
        border-bottom: 2px solid transparent;
        transition: border .2s, color .2s;
        cursor: pointer;
        padding-bottom: 8px;
        color: var(--text-muted);
        font-weight: 600;
    }
    .tab-line.active {
        color: var(--pine-950);
        border-color: var(--accent);
    }
    .mobile-nav {
        display: none;
        padding: 8px 0 22px;
        background: rgba(244, 241, 232, .98);
    }
    .mobile-nav.open {
        display: block;
    }
    .mobile-nav .mobile-channel {
        display: block;
        padding: 10px 4px;
        font-weight: 600;
        border-bottom: 1px solid rgba(220, 213, 200, .6);
    }
    @media (min-width: 1024px) {
        .gallery-grid {
            grid-template-columns: repeat(6, 1fr);
            grid-auto-rows: 150px;
            gap: 18px;
        }
        .g-a {
            grid-column: span 3;
            grid-row: span 2;
        }
        .g-b {
            grid-column: span 2;
            grid-row: span 2;
        }
        .g-c {
            grid-column: span 2;
            grid-row: span 1;
        }
        .g-d {
            grid-column: span 1;
            grid-row: span 1;
        }
    }
    @media (max-width: 767px) {
        .desktop-actions {
            display: none;
        }
        .mobile-menu-btn {
            display: inline-flex;
        }
    }
    @media (min-width: 768px) {
        .mobile-menu-btn {
            display: none;
        }
        .mobile-nav {
            display: none !important;
        }
    }

/* roulang page: article */
:root {
  --color-pine-950: #0C211A;
  --color-pine-900: #123026;
  --color-pine-700: #1D4937;
  --color-paper: #F4F1E8;
  --color-paper-deep: #E9E4D8;
  --color-surface: #FFFFFF;
  --color-accent: #F05A28;
  --color-accent-deep: #D94A1E;
  --color-text-main: #1A211D;
  --color-text-muted: #68736B;
  --color-line: #DCD5C8;
  --color-white: #FFFFFF;
  --radius-btn: 999px;
  --shadow-soft: 0 20px 45px -25px rgba(12, 33, 26, 0.3);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--color-paper);
  color: var(--color-text-main);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}

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

button,
input {
  font-family: inherit;
  font-size: 100%;
}

.container-app {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

@media (max-width: 767px) {
  .container-app {
    padding-left: 16px;
    padding-right: 16px;
  }
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(244, 241, 232, .88);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(220, 213, 200, .65);
}

.site-header.scrolled {
  box-shadow: 0 12px 30px -28px rgba(12, 33, 26, .5);
}

.logo-badge {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: var(--color-pine-950);
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .06);
}

.brand-word {
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-pine-950);
  white-space: nowrap;
}

.brand-word .text-accent {
  color: var(--color-accent);
}

.nav-underline {
  position: relative;
  display: inline-block;
  padding: 8px 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-muted);
  letter-spacing: .01em;
}

.nav-underline::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 0;
  height: 3px;
  border-radius: 50px;
  background: var(--color-accent);
  transition: width .25s ease;
}

.nav-underline:hover,
.nav-underline.active {
  color: var(--color-pine-950);
}

.nav-underline:hover::after,
.nav-underline.active::after {
  width: 100%;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 20px;
  border-radius: var(--radius-btn);
  border: 1px solid transparent;
  font-weight: 700;
  font-size: 14px;
  line-height: 1;
  white-space: nowrap;
  transition: transform .2s ease, background .2s ease, color .2s ease, box-shadow .2s ease;
}

.btn-accent {
  background: var(--color-accent);
  color: var(--color-pine-950);
}

.btn-accent:hover {
  background: #FF6A38;
  transform: translateY(-2px);
  box-shadow: 0 12px 24px -14px rgba(240, 90, 40, .7);
}

.btn-dark {
  background: var(--color-pine-950);
  color: #fff;
}

.btn-dark:hover {
  background: var(--color-pine-700);
  transform: translateY(-2px);
  box-shadow: 0 14px 24px -16px rgba(12, 33, 26, .6);
}

.btn-light-paper {
  background: var(--color-surface);
  color: var(--color-pine-950);
  border-color: var(--color-line);
}

.btn-light-paper:hover {
  background: var(--color-paper-deep);
  transform: translateY(-1px);
}

.input-base {
  height: 46px;
  border-radius: 12px;
  border: 1px solid var(--color-line);
  padding: 0 16px;
  background: var(--color-surface);
  outline: none;
  transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
}

.input-base:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(240, 90, 40, .15);
}

.mobile-nav {
  display: none;
  background: var(--color-surface);
  border-top: 1px solid var(--color-line);
  padding: 10px 0 18px;
}

.mobile-nav.open {
  display: block;
}

.mobile-channel {
  display: block;
  padding: 12px 4px;
  font-weight: 700;
  color: var(--color-text-main);
  border-bottom: 1px solid var(--color-line);
}

.mobile-channel.active {
  color: var(--color-accent-deep);
}

.mobile-menu-btn {
  display: flex;
}

.footer-bg {
  background: var(--color-pine-950);
}

.footer-link {
  color: rgba(255, 255, 255, .64);
  transition: color .2s ease;
}

.footer-link:hover {
  color: var(--color-accent);
}

.capsule-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 999px;
  padding: 5px 12px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--color-accent-deep);
  background: rgba(240, 90, 40, .1);
  border: 1px solid rgba(240, 90, 40, .2);
}

.capsule-pine {
  color: var(--color-pine-900);
  background: rgba(29, 73, 55, .09);
  border: 1px solid rgba(29, 73, 55, .14);
}

/* Article stage */
.article-stage {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 15% 20%, rgba(240, 90, 40, .16), transparent 30%),
    radial-gradient(circle at 90% 10%, rgba(255, 255, 255, .12), transparent 30%),
    linear-gradient(135deg, var(--color-pine-950), var(--color-pine-900) 64%, var(--color-pine-700));
  color: #fff;
}

.article-stage::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("/assets/images/backpic/back-3.webp");
  background-size: cover;
  background-position: center;
  opacity: .12;
  pointer-events: none;
}

.article-stage-inner {
  position: relative;
  z-index: 1;
  padding: 64px 0 56px;
}

@media (max-width: 767px) {
  .article-stage-inner {
    padding: 42px 0 36px;
  }
}

.breadcrumb-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255, 255, 255, .62);
  margin-bottom: 34px;
}

.breadcrumb-nav a {
  color: rgba(255, 255, 255, .82);
}

.breadcrumb-nav a:hover {
  color: #fff;
}

.breadcrumb-nav .current,
.breadcrumb-nav .sep {
  color: rgba(255, 255, 255, .5);
}

.breadcrumb-nav .sep {
  font-size: 12px;
}

.article-title {
  font-size: clamp(2rem, 5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.03em;
  max-width: 900px;
  text-wrap: balance;
  margin-top: 22px;
}

.article-sub-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 22px;
  margin-top: 28px;
  color: rgba(255, 255, 255, .68);
  font-size: 14px;
}

.article-sub-meta .dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .4);
}

/* Article body area */
.article-layout {
  padding: 48px 0 80px;
}

.article-wrap {
  max-width: 1120px;
}

.article-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: 24px;
  padding: clamp(20px, 4vw, 52px);
  box-shadow: 0 30px 60px -50px rgba(12, 33, 26, .35);
}

.article-cover {
  margin-bottom: 40px;
  border-radius: 20px;
  overflow: hidden;
  background: var(--color-paper-deep);
}

.article-cover img {
  width: 100%;
  aspect-ratio: 21 / 9;
  object-fit: cover;
}

@media (max-width: 767px) {
  .article-cover img {
    aspect-ratio: 16 / 9;
  }
}

.article-body {
  font-size: 17px;
  line-height: 1.95;
  color: var(--color-text-main);
}

.article-body p {
  margin: 0 0 1.4em;
}

.article-body h2 {
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--color-pine-950);
  line-height: 1.35;
  margin: 2em 0 .7em;
}

.article-body h3 {
  font-size: 1.28rem;
  font-weight: 700;
  color: var(--color-pine-900);
  margin: 1.8em 0 .6em;
}

.article-body ul,
.article-body ol {
  margin: 0 0 1.6em;
  padding-left: 1.5em;
}

.article-body li {
  margin-bottom: .4em;
}

.article-body li::marker {
  color: var(--color-accent-deep);
}

.article-body blockquote {
  border-left: 4px solid var(--color-accent);
  background: rgba(240, 90, 40, .06);
  border-radius: 0 14px 14px 0;
  padding: 20px 24px;
  margin: 1.8em 0;
  color: var(--color-pine-900);
}

.article-body a:not(.btn) {
  color: var(--color-accent-deep);
  border-bottom: 1px solid rgba(240, 90, 40, .35);
}

.article-body a:not(.btn):hover {
  border-color: var(--color-accent-deep);
}

.article-body img {
  border-radius: 16px;
  margin: 2em 0;
}

.article-body figure {
  margin: 2em 0;
}

.article-body figcaption {
  text-align: center;
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: 8px;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.8em 0;
  font-size: 15px;
}

.article-body th,
.article-body td {
  border: 1px solid var(--color-line);
  padding: 12px 14px;
  text-align: left;
}

.article-body th {
  background: var(--color-paper-deep);
  font-weight: 700;
  color: var(--color-pine-950);
}

.article-body hr {
  border: none;
  border-top: 1px solid var(--color-line);
  margin: 2.5em 0;
}

.article-toolbar {
  margin-top: 44px;
  padding-top: 28px;
  border-top: 1px solid var(--color-line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  justify-content: space-between;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 40px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid var(--color-line);
  background: var(--color-paper);
  font-weight: 700;
  font-size: 13px;
  color: var(--color-pine-900);
  cursor: pointer;
  transition: background .2s ease, transform .2s ease;
}

.share-btn:hover {
  background: var(--color-paper-deep);
  transform: translateY(-1px);
}

.article-pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 26px;
}

@media (max-width: 639px) {
  .article-pager {
    grid-template-columns: 1fr;
  }
}

.pager-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  border-radius: 18px;
  border: 1px solid var(--color-line);
  background: var(--color-paper-deep);
  padding: 18px 20px;
  transition: transform .2s ease, border-color .2s ease;
}

.pager-card:hover {
  transform: translateY(-3px);
  border-color: rgba(240, 90, 40, .4);
}

.pager-card span:first-child {
  color: var(--color-text-muted);
  font-size: 13px;
}

.pager-card strong {
  color: var(--color-pine-950);
  font-size: 15px;
}

.reco-section {
  background: var(--color-paper-deep);
  padding: 70px 0;
}

.reco-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-top: 30px;
}

@media (max-width: 1023px) {
  .reco-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 639px) {
  .reco-grid {
    grid-template-columns: 1fr;
  }
}

.reco-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border-radius: 18px;
  border: 1px solid var(--color-line);
  overflow: hidden;
  transition: transform .22s ease, box-shadow .22s ease;
}

.reco-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 24px 45px -38px rgba(12, 33, 26, .4);
}

.reco-thumb {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--color-paper-deep);
}

.reco-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .35s ease;
}

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

.reco-content {
  flex: 1;
  padding: 20px;
  display: flex;
  flex-direction: column;
}

.reco-content h3 {
  font-weight: 700;
  font-size: 17px;
  line-height: 1.5;
  color: var(--color-pine-950);
  margin-top: 8px;
}

.reco-desc {
  color: var(--color-text-muted);
  font-size: 14px;
  line-height: 1.7;
  margin: 10px 0 16px;
}

.reco-link {
  margin-top: auto;
  color: var(--color-pine-900);
  font-weight: 700;
  font-size: 14px;
}

.reco-link .arrow {
  display: inline-block;
  transition: transform .2s ease;
}

.reco-card:hover .reco-link {
  color: var(--color-accent-deep);
}

.reco-card:hover .reco-link .arrow {
  transform: translateX(3px);
}

/* FAQ */
.faq-section {
  padding: 84px 0;
}

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: 16px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color .2s ease;
}

.faq-item[open] {
  border-color: rgba(240, 90, 40, .35);
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 22px;
  font-weight: 700;
  font-size: 15px;
  color: var(--color-pine-950);
}

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

.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-paper-deep);
  color: var(--color-accent-deep);
  font-size: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 500;
  transition: transform .25s ease, background .25s ease;
  flex: none;
}

.faq-item[open] .faq-icon {
  transform: rotate(45deg);
  background: rgba(240, 90, 40, .12);
}

.faq-answer {
  padding: 0 22px 22px;
  font-size: 15px;
  color: var(--color-text-muted);
  line-height: 1.8;
}

.section-title-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-accent-deep);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
}

.section-kicker-line {
  width: 32px;
  height: 2px;
  border-radius: 2px;
  background: var(--color-accent);
  display: inline-block;
}

.hero-entry-title a {
  transition: opacity .2s ease;
}

.hero-entry-title a:hover {
  opacity: .8;
}

.text-pine-950 {
  color: var(--color-pine-950);
}

.text-pine-900 {
  color: var(--color-pine-900);
}

.text-muted-soft {
  color: var(--color-text-muted);
}

@media (max-width: 767px) {
  .article-layout {
    padding-top: 28px;
    padding-bottom: 56px;
  }

  .article-panel,
  .article-body {
    font-size: 16px;
  }
}

/* roulang page: category1 */
:root {
        --pine-950: #0C211A;
        --pine-900: #123026;
        --pine-700: #1D4937;
        --paper: #F4F1E8;
        --paper-deep: #E9E4D8;
        --surface: #FFFFFF;
        --accent: #F05A28;
        --accent-deep: #D94A1E;
        --text-main: #1A211D;
        --text-muted: #68736B;
        --line: #DCD5C8;
        --white: #FFFFFF;
        --radius-card: 16px;
        --radius-image: 12px;
        --shadow-card: 0 18px 36px -20px rgba(12, 33, 26, 0.18);
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        margin: 0;
        background: var(--paper);
        color: var(--text-main);
        font-family: 'PingFang SC', 'HarmonyOS Sans SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
        line-height: 1.7;
        text-rendering: optimizeLegibility;
        -webkit-font-smoothing: antialiased;
    }

    h1,
    h2,
    h3,
    h4,
    p,
    ul,
    ol,
    figure,
    blockquote {
        margin: 0;
    }

    h1,
    h2,
    h3,
    h4 {
        letter-spacing: -0.02em;
        line-height: 1.25;
    }

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

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

    button,
    input {
        font: inherit;
    }

    a:focus-visible,
    button:focus-visible,
    input:focus-visible,
    summary:focus-visible {
        outline: 3px solid rgba(240, 90, 40, 0.35);
        outline-offset: 3px;
        border-radius: 6px;
    }

    .skip-link {
        position: fixed;
        left: 16px;
        top: 16px;
        z-index: 999;
        padding: 10px 18px;
        background: var(--pine-950);
        color: #fff;
        border-radius: 999px;
        font-size: 14px;
        transform: translateY(-160%);
        transition: transform .25s ease;
    }

    .skip-link:focus {
        transform: translateY(0);
        color: #fff;
    }

    .container-app {
        width: min(100% - 2rem, 1280px);
        margin-inline: auto;
    }

    @media (min-width: 768px) {
        .container-app {
            width: min(100% - 3rem, 1280px);
        }
    }

    .site-header {
        position: sticky;
        top: 0;
        z-index: 60;
        background: rgba(244, 241, 232, 0.86);
        -webkit-backdrop-filter: blur(16px);
        backdrop-filter: blur(16px);
        border-bottom: 1px solid rgba(220, 213, 200, 0.8);
        transition: box-shadow .3s ease, background .3s ease;
    }

    .site-header.scrolled {
        background: rgba(244, 241, 232, 0.94);
        box-shadow: 0 12px 28px -18px rgba(12, 33, 26, 0.28);
    }

    .logo-badge {
        width: 34px;
        height: 34px;
        border-radius: 10px;
        background: var(--pine-950);
        color: var(--accent);
        display: inline-flex;
        align-items: center;
        justify-content: center;
        box-shadow: 0 6px 14px -6px rgba(12, 33, 26, 0.35);
        flex: 0 0 auto;
    }

    .brand-word {
        color: var(--pine-950);
        font-weight: 800;
        letter-spacing: -0.02em;
    }

    .nav-underline {
        position: relative;
        font-weight: 500;
        color: #26342B;
        padding: 6px 0;
        transition: color .25s ease;
    }

    .nav-underline::after {
        content: "";
        position: absolute;
        left: 0;
        bottom: 0;
        width: 0;
        height: 2px;
        border-radius: 2px;
        background: var(--accent);
        transition: width .3s ease-out;
    }

    .nav-underline:hover {
        color: var(--pine-950);
    }

    .nav-underline:hover::after,
    .nav-underline.active::after {
        width: 100%;
    }

    .nav-underline.active {
        color: var(--pine-950);
        font-weight: 800;
    }

    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: .5rem;
        min-height: 46px;
        padding: .7rem 1.25rem;
        border-radius: 999px;
        border: 1px solid transparent;
        font-weight: 700;
        font-size: .95rem;
        line-height: 1;
        cursor: pointer;
        transition: transform .25s ease, box-shadow .25s ease, background .25s ease, color .25s ease, border-color .25s ease;
    }

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

    .btn-accent {
        background: var(--accent);
        color: var(--pine-950);
    }

    .btn-accent:hover {
        background: #ff7146;
        color: var(--pine-950);
        box-shadow: 0 14px 24px -12px rgba(240, 90, 40, 0.55);
        transform: translateY(-2px);
    }

    .btn-light-paper {
        background: #fff;
        color: var(--pine-950);
        border-color: var(--line);
    }

    .btn-light-paper:hover {
        background: var(--paper-deep);
        transform: translateY(-2px);
    }

    .btn-ghost-light {
        background: transparent;
        color: #fff;
        border-color: rgba(255, 255, 255, 0.55);
    }

    .btn-ghost-light:hover {
        background: rgba(255, 255, 255, 0.12);
        border-color: #fff;
        transform: translateY(-2px);
    }

    .btn-pine {
        background: var(--pine-950);
        color: #fff;
    }

    .btn-pine:hover {
        background: var(--pine-700);
        box-shadow: 0 14px 26px -16px rgba(12, 33, 26, 0.5);
        transform: translateY(-2px);
    }

    .input-base {
        height: 46px;
        padding: 0 1.1rem;
        border: 1px solid var(--line);
        background: var(--surface);
        border-radius: 999px;
        font-size: .9rem;
        color: var(--text-main);
        outline: none;
        transition: border-color .2s ease, box-shadow .2s ease;
    }

    .input-base:focus {
        border-color: rgba(240, 90, 40, 0.7);
        box-shadow: 0 0 0 4px rgba(240, 90, 40, 0.16);
    }

    .mobile-menu-btn {
        transition: background .2s ease, color .2s ease;
    }

    .mobile-menu-btn:hover {
        background: var(--paper-deep);
    }

    .mobile-nav {
        display: none;
        background: var(--paper);
        border-bottom: 1px solid var(--line);
        padding: 1rem 0 1.4rem;
    }

    .mobile-nav.open {
        display: block;
        animation: navIn .24s ease-out;
    }

    @keyframes navIn {
        from {
            opacity: 0;
            transform: translateY(-8px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .mobile-channel {
        display: block;
        padding: .8rem .5rem;
        font-weight: 700;
        color: var(--pine-950);
        border-bottom: 1px solid var(--line);
    }

    .mobile-channel:last-of-type {
        border-bottom: 0;
    }

    .mobile-channel.active {
        color: var(--accent);
    }

    .footer-bg {
        background: var(--pine-950);
    }

    .footer-link {
        color: rgba(255, 255, 255, 0.64);
        transition: color .2s ease, padding-left .2s ease;
        position: relative;
    }

    .footer-link:hover {
        color: #fff;
        padding-left: 6px;
    }

    .section-kicker {
        display: inline-flex;
        align-items: center;
        gap: .6rem;
        font-size: .76rem;
        letter-spacing: .18em;
        text-transform: uppercase;
        font-weight: 700;
        color: var(--accent);
    }

    .section-kicker::before {
        content: "";
        width: 24px;
        height: 2px;
        background: var(--accent);
    }

    .feature-row {
        display: grid;
        grid-template-columns: auto 1fr;
        gap: 1.5rem 1.4rem;
        padding: 2.2rem 0;
        border-bottom: 1px solid var(--line);
    }

    @media (min-width: 768px) {
        .feature-row {
            gap: 3.5rem;
            padding: 2.9rem 0;
        }
    }

    .feature-row:first-child {
        padding-top: 0;
    }

    .feature-row:last-child {
        border-bottom: 0;
    }

    .feature-index {
        width: 46px;
        height: 46px;
        border-radius: 50%;
        border: 1px solid var(--line);
        background: var(--surface);
        display: flex;
        align-items: center;
        justify-content: center;
        font-family: 'Inter', 'Arial', sans-serif;
        font-size: .85rem;
        font-weight: 800;
        color: var(--accent);
    }

    .event-item {
        display: grid;
        grid-template-columns: 1fr;
        gap: .8rem 2rem;
        padding: 2rem 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    }

    @media (min-width: 1024px) {
        .event-item {
            grid-template-columns: 140px 1.2fr 1fr 150px;
            align-items: center;
        }
    }

    .event-num {
        font-family: 'Inter', 'DIN Alternate', sans-serif;
        font-size: 1.1rem;
        font-weight: 800;
        letter-spacing: .12em;
        color: rgba(255, 255, 255, 0.4);
    }

    .event-tag {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 5px 12px;
        border-radius: 999px;
        background: rgba(255, 255, 255, 0.1);
        color: rgba(255, 255, 255, 0.82);
        font-size: .8rem;
        font-weight: 600;
        white-space: nowrap;
    }

    .stat-item {
        border-left: 1px solid rgba(255, 255, 255, 0.12);
        padding-left: 1.2rem;
    }

    .stat-item:first-child {
        border-left: 0;
        padding-left: 0;
    }

    .step-item {
        background: var(--surface);
        border: 1px solid var(--line);
        border-radius: var(--radius-card);
        padding: 1.8rem 1.6rem 1.7rem;
        box-shadow: var(--shadow-card);
        transition: box-shadow .3s ease, transform .3s ease;
    }

    .step-item:hover {
        transform: translateY(-4px);
        box-shadow: 0 22px 38px -22px rgba(12, 33, 26, 0.3);
    }

    .step-index {
        font-size: .82rem;
        font-weight: 800;
        letter-spacing: .14em;
        color: var(--accent);
    }

    .img-card {
        position: relative;
        overflow: hidden;
        border-radius: var(--radius-image);
        background: var(--pine-900);
    }

    .img-card img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform .5s ease-out, filter .5s ease;
        filter: saturate(.88);
    }

    .img-card:hover img {
        transform: scale(1.045);
        filter: saturate(1.02);
    }

    .img-card::after {
        content: "";
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, rgba(12, 33, 26, 0) 42%, rgba(12, 33, 26, 0.65) 100%);
        pointer-events: none;
    }

    .img-caption {
        position: absolute;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 2;
        padding: 1.1rem 1rem 1rem;
        color: #fff;
        font-size: .9rem;
        font-weight: 700;
        letter-spacing: .02em;
        display: flex;
        align-items: center;
        gap: .5rem;
    }

    .img-caption::before {
        content: "";
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: var(--accent);
        flex: 0 0 auto;
    }

    .faq-item {
        border-bottom: 1px solid var(--line);
    }

    .faq-item summary {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 1.5rem;
        list-style: none;
        cursor: pointer;
        padding: 1.3rem 0;
    }

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

    .faq-q-badge {
        width: 28px;
        height: 28px;
        border-radius: 50%;
        background: var(--pine-950);
        color: #fff;
        font-size: .78rem;
        font-weight: 800;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        flex: 0 0 auto;
    }

    .faq-question {
        font-size: 1.02rem;
        font-weight: 800;
        color: var(--pine-950);
        line-height: 1.6;
    }

    .faq-icon {
        width: 28px;
        height: 28px;
        border-radius: 50%;
        border: 1px solid var(--line);
        display: inline-flex;
        align-items: center;
        justify-content: center;
        color: var(--pine-950);
        flex: 0 0 auto;
        transition: background .2s ease, color .2s ease, transform .2s ease;
    }

    .faq-icon svg {
        width: 15px;
        height: 15px;
        transition: transform .25s ease;
    }

    .faq-item[open] .faq-icon {
        background: var(--accent);
        border-color: var(--accent);
        color: var(--pine-950);
    }

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

    .faq-answer {
        padding: 0 0 1.7rem 3.4rem;
        color: var(--text-muted);
        max-width: 860px;
    }

    @media (max-width: 520px) {
        .faq-answer {
            padding-left: 0;
        }
    }

    .footer-bg {
        background-color: var(--pine-950);
    }

    @media (max-width: 1024px) {
        .desktop-actions .btn-light-paper {
            display: none;
        }
    }

    @media (max-width: 520px) {
        .brand-word {
            font-size: 14px;
        }
        .logo-badge {
            width: 30px;
            height: 30px;
        }
    }

/* roulang page: category2 */
:root {
    --color-pine-950: #0C211A;
    --color-pine-900: #123026;
    --color-pine-700: #1D4937;
    --color-paper: #F4F1E8;
    --color-paper-deep: #E9E4D8;
    --color-surface: #FFFFFF;
    --color-accent: #F05A28;
    --color-accent-deep: #D94A1E;
    --color-ink: #1A211D;
    --color-muted: #68736B;
    --color-line: #DCD5C8;
    --radius-card: 16px;
    --radius-snippet: 12px;
    --shadow-card: 0 18px 40px -24px rgba(12, 33, 26, 0.28);
    --transition: 200ms ease-out;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    background-color: var(--color-paper);
    color: var(--color-ink);
    font-family: 'PingFang SC', 'HarmonyOS Sans SC', 'Microsoft YaHei', 'Noto Sans SC', 'sans-serif';
    line-height: 1.75;
    overflow-x: hidden;
  }

  * {
    box-sizing: border-box;
  }

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

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

  button {
    font-family: inherit;
  }

  input {
    font-family: inherit;
  }

  .container-app {
    width: min(1280px, 100% - 32px);
    margin-left: auto;
    margin-right: auto;
  }

  @media (min-width: 768px) {
    .container-app {
      width: min(1280px, 100% - 48px);
    }
  }

  .section-block {
    padding: clamp(56px, 8vw, 104px) 0;
  }

  .text-muted {
    color: var(--color-muted);
  }

  .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.75rem;
    letter-spacing: 0.18em;
    font-weight: 700;
    color: var(--color-accent-deep);
    text-transform: uppercase;
  }

  .eyebrow::before {
    content: '';
    width: 28px;
    height: 2px;
    background-color: var(--color-accent);
    display: inline-block;
    border-radius: 2px;
  }

  .page-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.18);
    color: #fff;
    font-size: 0.8rem;
    padding: 6px 14px;
    border-radius: 999px;
    letter-spacing: 0.04em;
  }

  .section-head {
    margin-bottom: 48px;
  }

  .section-title {
    font-size: clamp(1.9rem, 4vw, 2.75rem);
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: -0.01em;
    color: var(--color-ink);
    margin-top: 10px;
  }

  .section-desc {
    color: var(--color-muted);
    max-width: 720px;
    line-height: 1.9;
  }

  .section-title.dark {
    color: #fff;
  }

  .section-desc.dark {
    color: rgba(255, 255, 255, 0.72);
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 44px;
    padding: 0 22px;
    border-radius: 999px;
    border: 1px solid transparent;
    font-weight: 700;
    font-size: 0.94rem;
    line-height: 1.2;
    transition: transform 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, color 0.2s ease;
    white-space: nowrap;
    cursor: pointer;
    width: fit-content;
  }

  .btn svg {
    flex-shrink: 0;
  }

  .btn-accent {
    background-color: var(--color-accent);
    color: var(--color-pine-950);
    box-shadow: 0 8px 18px -10px rgba(240, 90, 40, 0.85);
  }

  .btn-accent:hover {
    background-color: #ff6b39;
    transform: translateY(-2px);
    box-shadow: 0 14px 24px -14px rgba(240, 90, 40, 0.9);
  }

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

  .btn-dark {
    background-color: var(--color-pine-950);
    color: #fff;
  }

  .btn-dark:hover {
    background-color: var(--color-pine-700);
    transform: translateY(-2px);
  }

  .btn-light-paper {
    background-color: transparent;
    border-color: rgba(12, 33, 26, 0.26);
    color: var(--color-pine-900);
  }

  .btn-light-paper:hover {
    background-color: var(--color-paper-deep);
    border-color: var(--color-pine-900);
  }

  .btn-outline-light {
    background: transparent;
    border-color: rgba(255, 255, 255, 0.55);
    color: #fff;
  }

  .btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
    transform: translateY(-2px);
  }

  .btn-lg {
    min-height: 52px;
    padding: 0 30px;
  }

  .input-base {
    width: 100%;
    height: 46px;
    padding: 0 18px;
    border-radius: 10px;
    border: 1px solid var(--color-line);
    background-color: #fff;
    font-size: 16px;
    color: var(--color-ink);
    outline: none;
    transition: box-shadow 0.2s ease, border-color 0.2s ease;
  }

  .input-base::placeholder {
    color: #a09c91;
  }

  .input-base:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(240, 90, 40, 0.18);
  }

  atropos

  .site-header {
    position: sticky;
    top: 0;
    z-index: 999;
    background: rgba(244, 241, 232, 0.86);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid transparent;
    transition: background-color 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
  }

  .site-header.scrolled {
    background-color: rgba(244, 241, 232, 0.96);
    border-bottom-color: rgba(220, 213, 200, 0.9);
    box-shadow: 0 12px 30px -28px rgba(12, 33, 26, 0.6);
  }

  .logo-badge {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-pine-900);
    color: var(--color-accent);
    border-radius: 12px;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
    flex-shrink: 0;
  }

  .brand-word {
    display: inline-flex;
    align-items: baseline;
    gap: 2px;
    font-weight: 800;
    color: var(--color-pine-950);
    letter-spacing: -0.01em;
    line-height: 1.25;
  }

  .brand-word .brand-dot {
    color: var(--color-accent);
    margin: 0 2px;
    font-weight: 900;
  }

  .nav-underline {
    position: relative;
    display: inline-flex;
    align-items: center;
    padding: 16px 0;
    font-weight: 600;
    color: var(--color-ink);
    font-size: 0.95rem;
    transition: color 0.2s ease;
  }

  .nav-underline::after {
    content: '';
    position: absolute;
    bottom: 6px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    border-radius: 2px;
    transform: translateX(-50%);
    transition: width 0.22s ease;
  }

  .nav-underline:hover {
    color: var(--color-pine-900);
  }

  .nav-underline:hover::after,
  .nav-underline.active::after {
    width: 100%;
  }

  .nav-underline.active {
    color: var(--color-pine-950);
  }

  .desktop-actions {
    display: none;
    align-items: center;
    gap: 12px;
  }

  @media (min-width: 1024px) {
    .desktop-actions {
      display: flex;
    }
  }

  .mobile-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
  }

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

  .mobile-nav {
    position: fixed;
    inset: 0;
    background-color: var(--color-paper);
    z-index: 998;
    padding: 88px 24px 32px;
    display: flex;
    flex-direction: column;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.25s ease, visibility 0.25s ease, transform 0.25s ease;
  }

  .mobile-nav.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .mobile-nav .container-app {
    display: flex;
    flex-direction: column;
  }

  .mobile-channel {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 4px;
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--color-ink);
    border-bottom: 1px solid var(--color-line);
  }

  .mobile-channel.active {
    color: var(--color-accent-deep);
  }

  .mobile-channel::after {
    content: '→';
    font-weight: 500;
    color: var(--color-muted);
  }

  .mobile-actions {
    margin-top: 18px;
    display: grid;
    gap: 12px;
  }

  /* 分类页顶部横幅 */
  .cat-hero {
    position: relative;
    background-color: var(--color-pine-900);
    background-image: linear-gradient(rgba(12, 33, 26, 0.88), rgba(12, 33, 26, 0.72)), url('/assets/images/backpic/back-2.webp');
    background-size: cover;
    background-position: center 35%;
    color: #fff;
    overflow: hidden;
  }

  .cat-hero::after {
    content: '';
    position: absolute;
    right: -15%;
    top: -40%;
    width: 55%;
    height: 140%;
    background: linear-gradient(115deg, rgba(240, 90, 40, 0.32), rgba(240, 90, 40, 0));
    border-radius: 50% 0 50% 50%;
    pointer-events: none;
  }

  .cat-hero-inner {
    position: relative;
    z-index: 2;
    display: grid;
    gap: 42px;
    padding: 72px 0 64px;
  }

  @media (min-width: 1024px) {
    .cat-hero-inner {
      grid-template-columns: 7fr 5fr;
      padding: 96px 0 88px;
    }
  }

  .cat-hero-breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.68);
    margin-bottom: 24px;
  }

  .cat-hero-breadcrumb a {
    transition: color 0.2s ease;
  }

  .cat-hero-breadcrumb a:hover {
    color: #fff;
  }

  .cat-hero-breadcrumb .sep {
    opacity: 0.5;
  }

  .cat-hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    background: rgba(255, 255, 255, 0.1);
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 18px;
  }

  .cat-hero-tag .dot {
    width: 8px;
    height: 8px;
    background-color: var(--color-accent);
    border-radius: 50%;
  }

  .cat-hero-title {
    font-size: clamp(2.2rem, 5.6vw, 4.4rem);
    font-weight: 800;
    line-height: 1.14;
    letter-spacing: -0.02em;
    margin-bottom: 22px;
  }

  .cat-hero-title .title-brand {
    color: var(--color-accent);
  }

  .cat-hero-desc {
    color: rgba(255, 255, 255, 0.78);
    max-width: 640px;
    font-size: 1rem;
    line-height: 1.9;
    margin-bottom: 30px;
  }

  .cat-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
  }

  .hero-check-card {
    background: rgba(255, 255, 255, 0.96);
    border-radius: 20px;
    color: var(--color-ink);
    padding: 22px;
    box-shadow: 0 24px 60px -20px rgba(0, 0, 0, 0.4);
    position: relative;
  }

  .hero-check-card::before {
    content: '';
    position: absolute;
    left: 24px;
    right: 24px;
    top: 0;
    height: 3px;
    border-radius: 0 0 6px 6px;
    background: var(--color-accent);
  }

  .hero-check-head {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 800;
    font-size: 1.02rem;
    margin-bottom: 16px;
  }

  .hero-check-head .led {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #34b373;
    box-shadow: 0 0 0 3px rgba(52, 179, 115, 0.18);
  }

  .hero-check-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 10px;
  }

  .hero-check-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    background: var(--color-paper);
    border: 1px solid var(--color-line);
    border-radius: 10px;
    padding: 10px 12px;
    font-size: 0.9rem;
    font-weight: 600;
  }

  .hero-check-list li svg {
    flex: 0 0 auto;
    width: 16px;
    height: 16px;
    color: var(--color-pine-700);
    margin-top: 3px;
  }

  .hero-check-note {
    margin-top: 14px;
    font-size: 0.78rem;
    color: var(--color-muted);
    background: rgba(240, 90, 40, 0.06);
    border-radius: 8px;
    padding: 8px 10px;
  }

  .hero-check-body {
    margin-top: 16px;
  }

  /* 登录步骤 */
  .steps-layout {
    display: grid;
    gap: 48px;
    align-items: start;
  }

  @media (min-width: 1024px) {
    .steps-layout {
      grid-template-columns: 5fr 7fr;
    }
  }

  .steps-intro {
    position: relative;
  }

  .step-rows {
    border-top: 1px solid var(--color-line);
  }

  .step-row {
    display: grid;
    gap: 18px;
    grid-template-columns: auto 1fr;
    padding: 34px 0;
    border-bottom: 1px solid var(--color-line);
  }

  @media (min-width: 768px) {
    .step-row {
      grid-template-columns: 110px 1fr;
    }
  }

  .step-index {
    font-family: 'DIN Alternate', 'Roboto Mono', monospace;
    color: var(--color-accent-deep);
    font-weight: 800;
    font-size: 0.9rem;
    letter-spacing: 0.12em;
  }

  .step-no {
    font-family: 'DIN Alternate', 'Roboto Mono', monospace;
    font-size: clamp(2.2rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--color-paper-deep);
    line-height: 1;
    margin-bottom: 8px;
  }

  .step-content h3 {
    color: var(--color-ink);
    font-size: 1.15rem;
    font-weight: 800;
    margin-bottom: 8px;
  }

  .step-content p {
    color: var(--color-muted);
    font-size: 0.95rem;
    line-height: 1.9;
  }

  .step-tags,
  .mini-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
  }

  .mini-tag {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    background: rgba(240, 90, 40, 0.08);
    border: 1px solid rgba(240, 90, 40, 0.16);
    color: var(--color-accent-deep);
    font-size: 0.78rem;
    padding: 4px 10px;
    border-radius: 999px;
  }

  /* 登录方式 */
  .method-section-wrap {
    background-color: var(--color-paper-deep);
  }

  .method-layout {
    display: grid;
    gap: 40px;
    align-items: center;
  }

  @media (min-width: 1024px) {
    .method-layout {
      grid-template-columns: 3fr 5fr;
    }
  }

  .method-figure {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-card);
    aspect-ratio: 4 / 5;
    position: relative;
    background-color: var(--color-pine-700);
  }

  .method-figure img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
  }

  .method-figure:hover img {
    transform: scale(1.04);
  }

  .method-figure-caption {
    position: absolute;
    left: 14px;
    right: 14px;
    bottom: 14px;
    background: rgba(12, 33, 26, 0.78);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    color: #fff;
    border-radius: 14px;
    padding: 10px 14px;
    font-size: 0.84rem;
    line-height: 1.55;
  }

  .method-cards {
    display: grid;
    gap: 14px;
  }

  .method-card {
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: 16px;
    padding: 18px 18px;
    display: flex;
    align-items: flex-start;
    gap: 16px;
    transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
  }

  .method-card:hover {
    border-color: rgba(240, 90, 40, 0.35);
    transform: translateY(-3px);
    box-shadow: 0 16px 24px -28px rgba(12, 33, 26, 0.4);
  }

  .method-icon {
    width: 44px;
    height: 44px;
    flex: 0 0 auto;
    border-radius: 12px;
    background: var(--color-pine-900);
    color: var(--color-accent);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.06);
  }

  .method-card h3 {
    font-size: 1rem;
    font-weight: 800;
    margin-bottom: 4px;
    color: var(--color-ink);
  }

  .method-card p {
    font-size: 0.9rem;
    color: var(--color-muted);
    line-height: 1.8;
  }

  /* 安全提示 */
  .notice-wrap {
    background-color: var(--color-surface);
  }

  .notice-layout {
    display: grid;
    gap: 48px;
    align-items: center;
  }

  @media (min-width: 1024px) {
    .notice-layout {
      grid-template-columns: 1fr 1fr;
    }
  }

  .notice-panel {
    background-color: var(--color-paper);
    background-image: linear-gradient(rgba(244, 241, 232, 0.92), rgba(244, 241, 232, 0.92)), url('/assets/images/backpic/back-3.webp');
    background-size: cover;
    background-position: center;
    border-radius: 20px;
    padding: clamp(24px, 4vw, 40px);
    position: relative;
  }

  @media (min-width: 1024px) {
    .notice-panel {
      min-height: 390px;
    }
  }

  .notice-panel .panel-title {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--color-pine-950);
    margin-bottom: 14px;
  }

  .notice-panel ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 16px;
  }

  .notice-panel li {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    color: var(--color-ink);
    font-size: 0.92rem;
  }

  .notice-panel li svg {
    flex: 0 0 auto;
    width: 20px;
    height: 20px;
    color: var(--color-accent);
    margin-top: 1px;
  }

  .notice-panel li strong {
    font-weight: 700;
    display: block;
  }

  .notice-panel li span {
    color: var(--color-muted);
    font-size: 0.88rem;
  }

  .notice-side {
    display: grid;
    gap: 26px;
  }

  .notice-side-item {
    border-left: 2px solid var(--color-accent);
    padding: 8px 0 8px 20px;
  }

  .notice-side-item h3 {
    font-size: 1.02rem;
    font-weight: 800;
    color: var(--color-ink);
    margin-bottom: 6px;
  }

  .notice-side-item p {
    color: var(--color-muted);
    font-size: 0.9rem;
    line-height: 1.8;
  }

  /* FAQ */
  .faq-wrap {
    background-color: var(--color-paper);
  }

  .faq-list {
    max-width: 920px;
    margin: 0 auto;
    display: grid;
    gap: 12px;
  }

  .faq-item {
    background-color: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: 14px;
    overflow: hidden;
    transition: box-shadow 0.25s ease, border-color 0.25s ease;
  }

  .faq-item[open] {
    border-color: rgba(240, 90, 40, 0.35);
    box-shadow: 0 18px 30px -32px rgba(12, 33, 26, 0.5);
  }

  .faq-item summary {
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    cursor: pointer;
    padding: 19px 20px;
    font-weight: 700;
    font-size: 0.98rem;
    color: var(--color-ink);
    transition: color 0.2s ease;
  }

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

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

  .faq-icon {
    width: 28px;
    height: 28px;
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: 1px solid var(--color-line);
    color: var(--color-accent);
    font-size: 1rem;
    transition: transform 0.3s ease, background-color 0.3s ease, color 0.3s ease;
  }

  .faq-item[open] .faq-icon {
    transform: rotate(45deg);
    background-color: var(--color-accent);
    color: var(--color-pine-950);
    border-color: var(--color-accent);
  }

  .faq-answer {
    padding: 0 20px 20px;
    color: var(--color-muted);
    font-size: 0.92rem;
    line-height: 1.85;
    border-top: 1px dashed var(--color-line);
    margin: 0 20px;
    padding: 0 0 20px;
  }

  .faq-answer p {
    padding-top: 16px;
  }

  /* 服务时间为支持 */
  .support-section {
    background-color: var(--color-surface);
  }

  .support-grid {
    display: grid;
    gap: 20px;
    grid-template-columns: 1fr;
  }

  @media (min-width: 1024px) {
    .support-grid {
      grid-template-columns: 1fr 1fr 1fr;
    }
  }

  .support-card {
    border: 1px solid var(--color-line);
    border-radius: 18px;
    padding: 26px 24px;
    background: linear-gradient(145deg, #fff, #faf7ef);
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  }

  .support-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 18px 30px -28px rgba(12, 33, 26, 0.35);
    border-color: rgba(240, 90, 40, 0.25);
  }

  .support-card .support-icon {
    width: 46px;
    height: 46px;
    border-radius: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(240, 90, 40, 0.1);
    color: var(--color-accent-deep);
    margin-bottom: 16px;
  }

  .support-card h3 {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--color-ink);
    margin-bottom: 8px;
  }

  .support-card p {
    color: var(--color-muted);
    font-size: 0.9rem;
    line-height: 1.8;
  }

  /* CTA */
  .cta-dark {
    background-color: var(--color-pine-950);
    background-image: linear-gradient(120deg, rgba(18, 48, 38, 0.6), rgba(18, 48, 38, 0.2)), url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    color: #fff;
    position: relative;
    overflow: hidden;
  }

  .cta-dark::before {
    content: '登录';
    position: absolute;
    right: -20px;
    bottom: -100px;
    font-size: 22rem;
    font-weight: 900;
    color: rgba(255, 255, 255, 0.03);
    line-height: 1;
    pointer-events: none;
  }

  .cta-inner {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    padding: clamp(64px, 8vw, 100px) 0;
  }

  .cta-eyebrow {
    color: var(--color-accent);
    font-weight: 700;
    letter-spacing: 0.12em;
    display: block;
    margin-bottom: 14px;
    font-size: 0.8rem;
  }

  .cta-title {
    font-size: clamp(2rem, 4.4vw, 3.2rem);
    font-weight: 800;
    line-height: 1.25;
    margin-bottom: 16px;
  }

  .cta-sub {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1rem;
    line-height: 1.9;
    max-width: 620px;
    margin: 0 auto 28px;
  }

  .cta-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 14px;
  }

  /* Footer */
  .footer-bg {
    background-color: var(--color-pine-950);
  }

  .footer-link {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
    transition: color 0.2s ease, padding-left 0.2s ease;
    position: relative;
  }

  .footer-link:hover {
    color: #fff;
    padding-left: 4px;
  }

  /* 布局增强 */
  .justify-between {
    justify-content: space-between;
  }

  .flex-center-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  @media (max-width: 640px) {
    .cat-hero-title {
      font-size: clamp(2.1rem, 11vw, 3rem);
    }

    .hero-check-card {
      padding: 18px;
    }

    .section-title {
      font-size: 1.7rem;
    }

    .brand-word {
      font-size: 14px !important;
    }
  }

  @media (max-width: 400px) {
    .brand-word {
      font-size: 13px !important;
    }

    .container-app {
      width: calc(100% - 24px);
    }
  }

  :focus-visible {
    outline: 3px solid rgba(240, 90, 40, 0.45);
    outline-offset: 3px;
    border-radius: 6px;
  }