/* roulang page: index */
:root {
    --paper: #F4F2EC;
    --white: #FFFFFF;
    --soft: #E9E7DF;
    --carbon: #101410;
    --panel: #0C100D;
    --ink: #2A3028;
    --muted: #6B756B;
    --line: #DDE1D8;
    --line-dark: #2B332B;
    --signal: #CFF25C;
    --deepgreen: #A8C93D;
    --radius-card: 8px;
    --radius-btn: 6px;
    --shadow-md: 0 14px 36px -16px rgba(16, 20, 16, 0.16);
    --shadow-lg: 0 32px 80px -28px rgba(16, 20, 16, 0.22);
  }
  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body { margin: 0; font-family: 'Inter', 'PingFang SC', 'HarmonyOS Sans SC', 'Noto Sans CJK SC', 'Microsoft YaHei', sans-serif; background: var(--paper); color: var(--ink); line-height: 1.7; font-size: 16px; -webkit-font-smoothing: antialiased; }
  h1, h2, h3, h4, p { margin: 0; }
  a { color: inherit; text-decoration: none; }
  a:hover { color: inherit; }
  img { display: block; max-width: 100%; }
  button, input { font-family: inherit; font-size: inherit; }
  button { border: 0; cursor: pointer; background: none; }
  :focus-visible { outline: 3px solid rgba(168, 201, 61, 0.45); outline-offset: 2px; border-radius: 4px; }
  .container { width: 100%; max-width: 1200px; margin: 0 auto; padding-left: clamp(20px, 4vw, 32px); padding-right: clamp(20px, 4vw, 32px); }
  .section-pad { padding-top: clamp(72px, 9vw, 120px); padding-bottom: clamp(72px, 9vw, 120px); }
  .eyebrow { font-family: 'JetBrains Mono', 'SFMono-Regular', 'Consolas', monospace; letter-spacing: 0.08em; color: var(--muted); font-size: 13px; text-transform: uppercase; }
  .mono { font-family: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace; }

  .site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 80; height: 72px; display: flex; align-items: center; transition: all .3s ease; background: rgba(244, 242, 236, 0.72); border-bottom: 1px solid transparent; }
  .site-header.scrolled { background: rgba(244, 242, 236, 0.84); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); border-bottom: 1px solid rgba(16, 20, 16, 0.08); }
  .header-inner { width: 100%; display: flex; align-items: center; gap: 20px; }
  .logo { display: inline-flex; align-items: center; gap: 11px; margin-right: 12px; }
  .logo-mark { width: 38px; height: 38px; border-radius: 11px; background: var(--carbon); display: grid; place-items: center; color: var(--signal); box-shadow: 0 6px 18px -8px rgba(16, 20, 16, 0.7); }
  .logo-mark span { font-weight: 700; font-size: 14px; letter-spacing: -0.04em; font-family: 'Inter', 'Manrope', sans-serif; }
  .logo-text { font-weight: 700; font-size: 1.34rem; letter-spacing: -0.02em; color: var(--carbon); white-space: nowrap; }
  .main-nav { display: none; align-items: center; margin-left: 6px; }
  .main-nav ul { display: flex; align-items: center; gap: 2px; list-style: none; margin: 0; padding: 0; }
  .nav-link { display: inline-block; padding: 10px 14px; border-radius: 7px; color: var(--ink); font-size: 15px; font-weight: 500; transition: all .2s ease; position: relative; }
  .nav-link:hover { color: var(--carbon); background: rgba(16, 20, 16, 0.05); }
  .nav-link.active { color: var(--carbon); font-weight: 600; }
  .nav-link.active::after { content: ''; position: absolute; left: 16px; right: 16px; bottom: 4px; height: 2px; border-radius: 2px; background: var(--signal); }
  .header-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }
  .header-search { display: none; align-items: center; background: rgba(16, 20, 16, 0.06); border: 1px solid transparent; border-radius: 8px; height: 38px; padding: 0 10px; width: 176px; transition: all .2s ease; }
  .header-search:focus-within { border-color: var(--signal); box-shadow: 0 0 0 3px rgba(168, 201, 61, 0.24); background: #fff; }
  .header-search svg { width: 16px; height: 16px; color: var(--muted); margin-right: 6px; flex: none; }
  .header-search input { border: 0; outline: none; background: transparent; width: 100%; font-size: 13px; color: var(--carbon); }
  .login-link { display: none; font-size: 14px; color: var(--ink); font-weight: 500; padding: 6px 4px; border-bottom: 1px solid transparent; transition: border .2s ease; }
  .login-link:hover { border-bottom-color: var(--carbon); }
  .header-cta { height: 40px; border-radius: 8px; background: var(--signal); color: var(--carbon); padding: 0 18px; display: inline-flex; align-items: center; gap: 7px; font-weight: 600; font-size: 14px; box-shadow: 0 6px 16px -10px rgba(139, 164, 44, 0.8); transition: all .2s ease; }
  .header-cta:hover { transform: translateY(-2px); box-shadow: 0 12px 26px -12px rgba(16, 20, 16, 0.44); }
  .menu-toggle { width: 40px; height: 40px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 8px; background: rgba(255, 255, 255, 0.46); }
  .menu-toggle svg { width: 20px; height: 20px; color: var(--carbon); }
  .drawer-menu { position: fixed; top: 0; right: 0; height: 100%; width: min(340px, 100%); background: var(--paper); z-index: 100; transform: translateX(100%); transition: transform .32s ease; display: flex; flex-direction: column; box-shadow: -20px 0 60px rgba(16, 20, 16, 0.14); }
  .drawer-menu.open { transform: translateX(0); }
  .drawer-top { display: flex; align-items: center; justify-content: space-between; padding: 20px 20px 12px; }
  .drawer-close { width: 40px; height: 40px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 8px; background: #fff; color: var(--carbon); }
  .drawer-close svg { width: 20px; height: 20px; }
  .drawer-content { padding: 10px 16px 28px; overflow-y: auto; }
  .drawer-nav { list-style: none; margin: 0 0 18px; padding: 0; border-top: 1px solid var(--line); }
  .drawer-nav li { border-bottom: 1px solid var(--line); }
  .drawer-navlink { display: block; padding: 15px 8px; font-weight: 500; font-size: 16px; color: var(--carbon); }
  .drawer-navlink.active { color: var(--carbon); box-shadow: inset -4px 0 0 var(--signal); }
  .drawer-search { display: flex; align-items: center; background: #fff; border: 1px solid var(--line); border-radius: 8px; height: 42px; padding: 0 12px; margin-bottom: 16px; }
  .drawer-search svg { width: 16px; height: 16px; color: var(--muted); margin-right: 8px; }
  .drawer-search input { border: 0; outline: none; background: transparent; width: 100%; font-size: 14px; }
  @media (min-width: 1024px) {
    .main-nav { display: flex; }
    .header-search, .login-link { display: flex; }
    .menu-toggle { display: none; }
    .drawer-menu { display: none; }
  }

  .hero { position: relative; overflow: hidden; background: var(--paper); padding: calc(72px + clamp(50px, 7vw, 88px)) 0 clamp(58px, 7vw, 96px); }
  .hero-bg { position: absolute; inset: 0; background-image: url('/assets/images/backpic/back-1.png'); background-size: cover; background-position: center; opacity: 0.13; }
  .hero-bg-fade { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(244, 242, 236, 0.98) 28%, rgba(244, 242, 236, 0.66) 100%); }
  .hero-copy, .hero-visual { position: relative; z-index: 2; }
  .badge-status { display: inline-flex; align-items: center; gap: 8px; background: var(--white); border: 1px solid var(--line); border-radius: 999px; padding: 7px 14px; font-size: 13px; color: var(--ink); box-shadow: 0 5px 16px -12px rgba(16, 20, 16, 0.25); }
  .badge-dot { width: 8px; height: 8px; border-radius: 99px; background: var(--deepgreen); }
  .hero-copy h1 { margin-top: 24px; font-size: clamp(2.6rem, 7vw, 4.7rem); line-height: 1.14; letter-spacing: -0.035em; font-weight: 700; color: var(--carbon); max-width: 730px; }
  .lede { margin-top: 24px; font-size: 17px; line-height: 1.85; color: var(--ink); max-width: 600px; }
  .hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; align-items: center; }
  .hero-trust { margin-top: 27px; display: flex; flex-wrap: wrap; align-items: center; gap: 14px; color: var(--muted); font-size: 13px; }
  .hero-trust .check { display: inline-flex; align-items: center; gap: 6px; }
  .hero-trust svg { width: 14px; height: 14px; color: var(--deepgreen); }
  .browser-shell { background: var(--panel); border-radius: 15px; border: 1px solid rgba(16,20,16,0.28); overflow: hidden; box-shadow: var(--shadow-lg); transform: rotate(0.35deg); }
  .browser-top { height: 50px; background: var(--panel); padding: 0 16px; display: flex; align-items: center; gap: 9px; border-bottom: 1px solid var(--line-dark); }
  .browser-dot { width: 11px; height: 11px; border-radius: 99px; display: inline-block; }
  .browser-dot.red { background: #FE6F5E; }
  .browser-dot.yellow { background: #D6B94B; }
  .browser-dot.green { background: #5CBE6A; }
  .browser-address { margin-left: 12px; color: #7c8a7c; font-size: 11px; background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.05); padding: 4px 12px; border-radius: 5px; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
  .browser-body { position: relative; background: #dde0d8; }
  .browser-body img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; background: #dde0d8; }
  .browser-float { position: absolute; left: 18px; bottom: 18px; background: rgba(255, 255, 255, 0.93); backdrop-filter: blur(8px); border: 1px solid rgba(16,20,16,0.08); border-radius: 10px; padding: 12px 15px; box-shadow: 0 10px 32px -12px rgba(16, 20, 16, 0.32); display: flex; align-items: center; gap: 12px; }
  .float-icon { width: 34px; height: 34px; border-radius: 8px; background: var(--signal); display: grid; place-items: center; color: var(--carbon); }
  .float-text strong { display: block; font-size: 14px; color: var(--carbon); }
  .float-text span { font-size: 11px; color: var(--muted); }

  .btn { height: 50px; border-radius: 8px; display: inline-flex; align-items: center; justify-content: center; gap: 9px; font-weight: 600; font-size: 15px; padding: 0 26px; transition: all 0.22s ease; border: 1px solid transparent; }
  .btn-primary { background: var(--signal); color: var(--carbon); border-color: var(--signal); box-shadow: 0 10px 24px -16px rgba(139, 164, 44, 0.9); }
  .btn-primary:hover { background: #dbf661; transform: translateY(-2px); box-shadow: 0 18px 32px -14px rgba(16, 20, 16, 0.42); }
  .btn-primary:active { transform: translateY(0) scale(0.99); }
  .btn-ghost { background: transparent; border-color: var(--carbon); color: var(--carbon); }
  .btn-ghost:hover { background: var(--carbon); color: var(--paper); transform: translateY(-1px); }
  .btn-dark { background: var(--carbon); border-color: var(--carbon); color: #fff; }
  .btn-dark:hover { background: #1f271f; transform: translateY(-2px); }
  .btn-glass { background: rgba(255,255,255,0.07); border-color: rgba(255,255,255,0.22); color: #fff; }
  .btn-glass:hover { background: rgba(255,255,255,0.15); transform: translateY(-1px); }
  .btn .btn-meta { font-size: 11px; font-weight: 400; opacity: .72; margin-left: 3px; }

  .carousel-section { background: var(--white); }
  .carousel-head { display: flex; flex-direction: column; gap: 22px; }
  .carousel-head .h2, .section-title { margin-top: 10px; font-size: clamp(1.9rem, 4vw, 3rem); line-height: 1.25; letter-spacing: -0.03em; color: var(--carbon); font-weight: 700; }
  .carousel-controls { display: flex; gap: 10px; }
  .carousel-btn { width: 48px; height: 48px; border-radius: 100px; background: var(--paper); border: 1px solid var(--line); display: grid; place-items: center; color: var(--carbon); transition: all .2s ease; }
  .carousel-btn:hover { background: var(--carbon); color: var(--signal); transform: translateY(-2px); }
  .carousel-btn svg { width: 20px; height: 20px; }
  .carousel-wrap { margin-top: 48px; }
  .carousel-viewport { overflow: hidden; padding: 8px 2px; }
  .carousel-track { display: flex; gap: 24px; transition: transform .55s cubic-bezier(.3, .7, .2, 1); will-change: transform; }
  .car-slide { flex: 0 0 calc((100% - 24px) / 1.48); min-width: 310px; }
  .slide-top { display: flex; align-items: flex-start; gap: 16px; margin-bottom: 18px; }
  .slide-num { font-family: 'JetBrains Mono', Consolas, monospace; font-size: 13px; color: var(--muted); line-height: 1.6; margin-top: 3px; }
  .slide-copy h3 { font-size: 19px; font-weight: 700; color: var(--carbon); }
  .slide-copy p { margin-top: 8px; font-size: 14px; color: var(--muted); line-height: 1.7; }
  .shot-frame { border: 1px solid var(--line); border-radius: 13px; overflow: hidden; background: #F5F6F2; aspect-ratio: 16 / 9; box-shadow: 0 12px 32px -18px rgba(16, 20, 16, 0.24); }
  .shot-frame img { width: 100%; height: 100%; object-fit: cover; }
  .carousel-dots { display: flex; gap: 10px; margin-top: 25px; }
  .dot-btn { width: 30px; height: 7px; border-radius: 99px; background: var(--line); border: 0; transition: all .25s ease; padding: 0; }
  .dot-btn.active { width: 52px; background: var(--carbon); }
  @media (max-width: 820px) {
    .car-slide { flex: 0 0 calc((100% - 24px) / 1.25); min-width: 240px; }
  }
  @media (max-width: 520px) {
    .car-slide { flex: 0 0 100%; min-width: 0; }
  }

  .system-section { background: var(--paper); }
  .sys-summary-text { margin-top: 18px; max-width: 500px; }
  .sys-list { margin-top: 36px; border-top: 1px solid rgba(16, 20, 16, 0.18); }
  .sys-row { display: grid; grid-template-columns: 1fr auto; gap: 18px; align-items: center; border-bottom: 1px solid rgba(16, 20, 16, 0.18); padding: 24px 8px; transition: all .24s ease; }
  .sys-row:hover { padding-left: 18px; padding-right: 0; background: rgba(255,255,255,0.62); }
  .sys-row .k { font-size: 14px; color: var(--muted); display: block; margin-bottom: 4px; }
  .sys-row .v { font-size: 16px; font-weight: 500; color: var(--carbon); }
  .sys-row .arrow { font-family: 'JetBrains Mono', Consolas, monospace; color: var(--carbon); font-size: 22px; opacity: .6; }
  .req-note { display: flex; gap: 12px; margin-top: 26px; padding: 18px 18px; border: 1px dashed var(--line); background: rgba(255,255,255,0.45); border-radius: 8px; color: var(--muted); font-size: 14px; line-height: 1.7; }

  .review-section { background: var(--panel); color: #EFF5EA; }
  .review-quote-mark { font-family: Georgia, serif; font-size: 68px; line-height: .4; color: var(--signal); }
  .review-lead { margin-top: 22px; font-size: clamp(1.55rem, 3.3vw, 2.4rem); line-height: 1.62; font-weight: 550; letter-spacing: -0.02em; max-width: 980px; color: #f9fbf7; }
  .review-people { display: grid; grid-template-columns: 1fr; gap: 18px; margin-top: 44px; }
  @media (min-width: 700px) { .review-people { grid-template-columns: 1fr 1fr; } }
  .person-card { border-radius: 10px; padding: 22px; background: rgba(255,255,255,0.055); border: 1px solid rgba(255,255,255,0.1); }
  .person-header { display: flex; align-items: center; gap: 13px; }
  .avatar { width: 44px; height: 44px; border-radius: 100px; background: var(--signal); color: var(--carbon); display: grid; place-items: center; font-weight: 700; font-size: 15px; letter-spacing: -0.02em; flex: none; }
  .avatar.gray { background: #3e4a3e; color: #f2f7ef; }
  .person-header strong { display: block; color: #fff; font-size: 15px; }
  .person-header span { font-size: 12px; color: #9BA79B; }
  .person-card p { margin-top: 16px; color: #C8D0C6; font-size: 15px; line-height: 1.8; }
  .stars { margin-top: 14px; display: flex; gap: 3px; color: var(--signal); }
  .stars svg { width: 16px; height: 16px; fill: currentColor; }

  .access-section { background: var(--panel); color: #fff; border-top: 1px solid var(--line-dark); }
  .access-panel { padding: clamp(30px, 5vw, 64px) 0; }
  .access-copy h2 { font-size: clamp(1.9rem, 4vw, 3.1rem); letter-spacing: -0.025em; font-weight: 700; color: #fff; line-height: 1.2; max-width: 620px; }
  .access-copy p { margin-top: 18px; color: #B9C4B7; max-width: 560px; }
  .version-note { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-top: 30px; }
  .version-pill { display: inline-flex; align-items: center; gap: 7px; font-family: 'JetBrains Mono', Consolas, monospace; border: 1px solid #3b463b; border-radius: 40px; padding: 8px 15px; font-size: 12px; color: #d4e1d2; background: rgba(255,255,255,0.04); }
  .access-btns { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }
  @media (min-width: 900px) {
    .access-panel { display: grid; grid-template-columns: 1.08fr .92fr; gap: 60px; align-items: center; }
  }
  .availability { margin-top: 28px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; list-style: none; padding: 0; }
  @media (min-width: 640px) { .availability { grid-template-columns: repeat(4, 1fr); } }
  .availability li { display: flex; align-items: center; gap: 8px; color: #B9C4B7; font-size: 13px; }
  .availability svg { width: 15px; height: 15px; color: var(--signal); flex: none; }

  .news-section { background: var(--paper); }
  .news-head-top { display: flex; justify-content: space-between; align-items: flex-end; gap: 20px; margin-bottom: 36px; }
  .feed-list { border-top: 1px solid rgba(16,20,16,0.12); }
  .feed-item { display: grid; grid-template-columns: 1fr auto; gap: 8px 26px; padding: 27px 6px; border-bottom: 1px solid var(--line); transition: background .22s ease, padding-left .22s ease; }
  .feed-item:hover { background: rgba(255,255,255,0.88); padding-left: 18px; padding-right: 16px; }
  .feed-title { font-size: 18px; font-weight: 700; color: var(--carbon); line-height: 1.5; }
  .feed-title a { transition: color .2s ease; }
  .feed-title a:hover { color: #5e702a; }
  .feed-summary { margin-top: 7px; color: var(--muted); font-size: 15px; line-height: 1.75; max-width: 780px; }
  .feed-meta { grid-column: 1 / 3; display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: 13px; }
  .feed-cat { display: inline-block; background: rgba(168, 201, 61, 0.16); color: #42530e; padding: 3px 10px; border-radius: 100px; font-size: 12px; font-weight: 500; }
  .feed-read { margin-left: auto; display: inline-flex; align-items: center; gap: 6px; color: var(--carbon); font-weight: 500; font-size: 13px; }
  .feed-read svg { width: 15px; height: 15px; transition: transform .2s ease; }
  .feed-item:hover .feed-read svg { transform: translateX(3px); }
  .feed-date { font-family: 'JetBrains Mono', Consolas, monospace; font-size: 12px; color: var(--muted); }
  .empty-note { display: flex; flex-direction: column; align-items: center; text-align: center; justify-content: center; padding: 60px 20px; border-bottom: 1px solid var(--line); color: var(--muted); }
  .empty-note .node-icon { width: 46px; height: 46px; border-radius: 14px; background: var(--soft); display: grid; place-items: center; margin-bottom: 14px; }
  .empty-note svg { width: 22px; height: 22px; color: var(--muted); }

  .faq-section { background: var(--white); }
  .faq-intro { max-width: 340px; }
  .faq-intro p { margin-top: 18px; color: var(--muted); }
  .faq-list-wrap { margin-top: 30px; }
  @media (min-width: 1024px) { .faq-list-wrap { margin-top: 0; } }
  .faq-list { border-top: 1px solid rgba(16,20,16,0.12); }
  .faq-item { border-bottom: 1px solid var(--line); }
  .faq-toggle { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 18px; text-align: left; padding: 22px 4px; min-height: 60px; color: var(--carbon); font-size: 16px; font-weight: 600; transition: padding .2s ease; }
  .faq-item.open .faq-toggle { padding-bottom: 12px; }
  .faq-icon { width: 30px; height: 30px; border-radius: 100px; background: var(--paper); border: 1px solid var(--line); display: grid; place-items: center; font-size: 17px; font-weight: 400; color: var(--carbon); transition: transform .3s ease, background .2s ease; flex: none; }
  .faq-item.open .faq-icon { transform: rotate(45deg); background: var(--signal); border-color: var(--signal); }
  .faq-answergrid { display: grid; grid-template-rows: 0fr; opacity: 0; transition: grid-template-rows .35s ease, opacity .3s ease; }
  .faq-item.open .faq-answergrid { grid-template-rows: 1fr; opacity: 1; }
  .faq-answer-inner { min-height: 0; overflow: hidden; }
  .faq-answer-inner p { padding: 0 4px 24px; color: var(--muted); line-height: 1.9; font-size: 15px; max-width: 760px; }

  .final-cta { background: var(--paper); }
  .cta-card { border-radius: 22px; background: var(--carbon); overflow: hidden; position: relative; padding: clamp(40px, 7vw, 90px) clamp(26px, 5vw, 95px); display: flex; flex-direction: column; align-items: flex-start; }
  .cta-card::after { content: ''; position: absolute; right: -130px; top: -130px; width: 360px; height: 360px; border-radius: 100%; background: radial-gradient(circle, rgba(207, 242, 92, 0.23) 0%, transparent 68%); pointer-events: none; }
  .cta-card h2 { font-size: clamp(2rem, 4.6vw, 3.6rem); letter-spacing: -0.03em; color: #fff; line-height: 1.2; max-width: 560px; font-weight: 700; position: relative; }
  .cta-card p { margin-top: 20px; color: #b8c4b6; max-width: 470px; font-size: 16px; position: relative; }
  .cta-buttons { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 14px; position: relative; }
  .cta-note { position: relative; margin-top: 18px; color: #687468; font-size: 13px; }

  .footer { background: var(--carbon); color: #CBD5C8; padding: 64px 0 36px; }
  .footer-grid { display: grid; grid-template-columns: 1fr; gap: 38px; }
  @media (min-width: 720px) { .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; } }
  .footer-brand .logo-text { color: #fff; }
  .footer-brand p { margin-top: 18px; font-size: 14px; line-height: 1.8; color: #a5b2a3; max-width: 300px; }
  .footer-version { display: inline-flex; gap: 8px; font-family: 'JetBrains Mono', Consolas, monospace; font-size: 12px; color: #93a391; margin-top: 20px; border: 1px solid #2f392f; padding: 7px 12px; border-radius: 100px; }
  .footer h4 { color: #fff; font-size: 14px; margin-bottom: 20px; font-weight: 600; }
  .footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
  .footer a { color: #a5b2a3; font-size: 14px; transition: color .2s ease; }
  .footer a:hover { color: var(--signal); }
  .footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); margin-top: 64px; padding-top: 26px; display: flex; flex-direction: column; gap: 12px; color: #778277; font-size: 13px; }
  @media (min-width: 720px) { .footer-bottom { flex-direction: row; justify-content: space-between; } }

/* roulang page: article */
:root {
  --paper: #F4F2EC;
  --surface: #FFFFFF;
  --soft: #E9E7DF;
  --ink: #101410;
  --deep: #0C100D;
  --text: #2A3028;
  --muted: #6B756B;
  --border: #DDE1D8;
  --line-dark: #2B332B;
  --signal: #CFF25C;
  --green-hover: #DDF989;
  --shadow-soft: 0 12px 32px -12px rgba(16, 20, 16, 0.18);
  --radius: 8px;
  --radius-sm: 6px;
}

html { scroll-behavior: smooth; }
body {
  margin: 0;
  padding-top: 72px;
  background: var(--paper);
  color: var(--text);
  font-family: "PingFang SC", "HarmonyOS Sans SC", "Noto Sans CJK SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
body.no-scroll { overflow: hidden; }

*, *::before, *::after { box-sizing: border-box; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
ul, ol { margin: 0; padding: 0; list-style: none; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: rgba(244, 242, 236, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  height: 72px;
}
.site-header.is-scrolled {
  border-bottom-color: var(--border);
  box-shadow: 0 8px 30px -18px rgba(16,20,16,0.22);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 20px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: var(--ink);
  color: var(--signal);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: "Manrope", "Inter", "JetBrains Mono", monospace;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: -0.02em;
  border: 1px solid rgba(255,255,255,0.08);
}
.logo-text {
  font-size: 19px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.02em;
}

.main-nav {
  display: flex;
  align-items: center;
}
.main-nav ul {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  display: inline-block;
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  position: relative;
  transition: color 0.2s ease, background 0.2s ease;
}
.nav-link:hover {
  color: var(--ink);
  background: rgba(16,20,16,0.05);
}
.nav-link.active {
  color: var(--ink);
  font-weight: 600;
}
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--signal);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}
.header-search {
  display: flex;
  align-items: center;
  background: rgba(16,20,16,0.05);
  border: 1px solid transparent;
  border-radius: 8px;
  transition: border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
  padding: 0 6px;
  height: 38px;
}
.header-search:focus-within {
  background: var(--surface);
  border-color: var(--signal);
  box-shadow: 0 0 0 3px rgba(207,242,92,0.28);
}
.search-input {
  width: 160px;
  background: transparent;
  border: 0;
  outline: none;
  font-size: 13px;
  color: var(--text);
  padding: 0 4px;
}
.search-input::placeholder { color: #8A938A; }
.search-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  background: transparent;
  color: var(--muted);
  padding: 6px;
  border-radius: 6px;
  transition: background 0.2s ease, color 0.2s ease;
}
.search-btn:hover { background: rgba(16,20,16,0.08); color: var(--ink); }

.header-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  padding: 6px 2px;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.header-link:hover { color: var(--ink); border-bottom-color: var(--ink); }

.header-cta {
  height: 38px;
  padding: 0 16px;
  font-size: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 15px;
  line-height: 1;
  padding: 0 24px;
  height: 48px;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
  cursor: pointer;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px) scale(0.99); }
.btn-primary {
  background: var(--signal);
  color: var(--ink);
  border-color: var(--ink);
}
.btn-primary:hover {
  background: var(--green-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
}
.btn-dark {
  background: var(--ink);
  color: #ffffff;
  border-color: var(--ink);
}
.btn-dark:hover { background: #1a2019; transform: translateY(-2px); box-shadow: var(--shadow-soft); }
.btn-ghost {
  background: transparent;
  border-color: var(--ink);
  color: var(--ink);
}
.btn-ghost:hover {
  background: rgba(16,20,16,0.06);
  border-color: var(--ink);
  transform: translateY(-2px);
}
.btn-sm { height: 38px; padding: 0 16px; font-size: 13px; border-radius: 6px; }

.menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: transparent;
  align-items: center;
}
.menu-btn span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.menu-btn.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-btn.open span:nth-child(2) { opacity: 0; }
.menu-btn.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 49;
  background: var(--paper);
  padding: 24px 20px 40px;
  overflow-y: auto;
}
.mobile-nav.open { display: block; }
.mobile-nav a {
  display: block;
  padding: 14px 8px;
  font-size: 17px;
  font-weight: 500;
  color: var(--text);
  border-bottom: 1px solid var(--border);
}
.mobile-nav a:hover { color: var(--ink); }
.mobile-nav a.active { color: var(--ink); font-weight: 700; }
.mobile-search { margin-bottom: 12px; }

.mobile-search input {
  width: 100%;
  height: 44px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  padding: 0 14px;
  outline: none;
  font-size: 15px;
}

/* Article hero */
.article-hero {
  background: linear-gradient(180deg, #E9E7DF 0%, var(--paper) 100%);
  border-bottom: 1px solid var(--border);
  padding: 52px 0 44px;
}
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 28px;
}
.breadcrumb a { color: var(--muted); transition: color 0.2s ease; }
.breadcrumb a:hover { color: var(--ink); }
.breadcrumb span { color: var(--text); }
.breadcrumb i { font-style: normal; color: #C0C6BE; }

.article-heading {
  max-width: 860px;
}
.category-pill {
  display: inline-flex;
  align-items: center;
  background: var(--ink);
  color: var(--signal);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 18px;
}
.article-heading h1 {
  font-size: clamp(30px, 4.6vw, 48px);
  font-weight: 700;
  line-height: 1.22;
  color: var(--ink);
  letter-spacing: -0.02em;
  margin: 0 0 20px;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 28px;
  font-size: 14px;
  color: var(--muted);
}
.article-meta .meta-icon {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* Article container */
.article-section {
  padding: 56px 0 24px;
}
.article-layout {
  max-width: 820px;
  margin: 0 auto;
}
.article-body {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 44px 52px;
  font-size: 17px;
  line-height: 1.9;
  color: var(--text);
  word-break: break-word;
}
.article-body > *:first-child { margin-top: 0; }
.article-body p {
  margin: 0 0 24px;
  font-size: 17px;
  line-height: 1.92;
}
.article-body h2 {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
  margin: 48px 0 16px;
  padding-top: 8px;
}
.article-body h3 {
  font-size: 20px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--ink);
  margin: 36px 0 12px;
}
.article-body a {
  color: #3E6542;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: #A8C93D;
  transition: color 0.2s ease;
}
.article-body a:hover { color: var(--ink); text-decoration-color: var(--ink); }
.article-body ul,
.article-body ol {
  margin: 0 0 24px;
  padding-left: 22px;
}
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body li {
  margin-bottom: 8px;
  padding-left: 4px;
}
.article-body blockquote {
  margin: 32px 0;
  padding: 20px 24px;
  border-left: 4px solid var(--signal);
  background: #FAF9F4;
  border-radius: 0 8px 8px 0;
  color: var(--text);
  font-size: 17px;
  line-height: 1.8;
}
.article-body blockquote p { margin-bottom: 8px; }
.article-body code {
  font-family: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 0.9em;
  background: #EDEBE3;
  border-radius: 5px;
  padding: 2px 7px;
  color: #1F271F;
}
.article-body pre {
  background: #0C100D;
  color: #E7EDE2;
  border-radius: 10px;
  padding: 22px 24px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.7;
  margin: 28px 0;
}
.article-body pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 15px;
}
.article-body th {
  background: #EFEDE5;
  color: var(--ink);
  text-align: left;
  padding: 12px 14px;
  border: 1px solid var(--border);
  font-weight: 600;
}
.article-body td {
  padding: 11px 14px;
  border: 1px solid var(--border);
  vertical-align: top;
}
.article-body img {
  border-radius: 10px;
  border: 1px solid var(--border);
  margin: 32px auto;
}
.article-body hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 40px 0;
}
.article-tags {
  margin-top: 36px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* Not found */
.notfound-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  text-align: center;
  padding: 80px 24px;
}
.notfound-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--soft);
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 18px;
}
.notfound-box h2 {
  font-size: 26px;
  color: var(--ink);
  margin: 0 0 12px;
}
.notfound-box p {
  color: var(--muted);
  margin: 0 0 28px;
}

/* CTA band */
.article-cta {
  background: var(--deep);
  border-radius: 14px;
  color: #fff;
  padding: 42px 44px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  margin: 56px auto 0;
  max-width: 900px;
  background-image: linear-gradient(120deg, rgba(207,242,92,0.05) 0%, transparent 55%);
  border: 1px solid var(--line-dark);
}
.article-cta-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 6px;
}
.article-cta-desc {
  color: #B0BBB0;
  font-size: 14px;
  line-height: 1.6;
}
.article-cta .btn { flex-shrink: 0; }

/* Related */
.related-section {
  max-width: 1000px;
  margin: 0 auto;
  padding: 64px 0 72px;
}
.related-heading {
  font-size: 26px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 10px;
}
.related-sub {
  color: var(--muted);
  font-size: 15px;
  margin-bottom: 28px;
}
.related-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr 0.9fr;
  gap: 18px;
}
.related-card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 26px 24px;
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}
.related-card:hover {
  border-color: #B9C7B3;
  transform: translateY(-4px);
  box-shadow: var(--shadow-soft);
}
.related-card:active { transform: translateY(-1px); }
.related-icon {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #EDEBE3;
  color: var(--ink);
  margin-bottom: 18px;
}
.related-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.4;
  margin: 0 0 10px;
}
.related-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
  margin: 0;
}
.related-card:hover h3 { color: #344932; }
.related-main {
  background: var(--ink);
  border-color: var(--ink);
}
.related-main h3,
.related-main p { color: #ffffff; }
.related-main:hover {
  border-color: var(--ink);
  background: #1A2019;
}

/* Footer */
.footer {
  background: #0C100D;
  color: #C2CBC2;
}
.footer a { color: #C2CBC2; transition: color 0.2s ease; }
.footer a:hover { color: #ffffff; }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding: 56px 0 36px;
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: #AebBAE;
  max-width: 360px;
  margin: 14px 0 18px;
}
.footer-version {
  display: inline-block;
  font-size: 12px;
  color: #8A978A;
  font-family: "Manrope", "Inter", monospace;
  border: 1px solid #2B332B;
  padding: 5px 10px;
  border-radius: 6px;
}
.footer h4 {
  color: #ffffff;
  font-size: 14px;
  font-weight: 600;
  margin: 0 0 16px;
}
.footer ul li { margin-bottom: 10px; }
.footer ul a {
  font-size: 14px;
  padding: 2px 0;
}
.footer-bottom {
  padding: 24px 0 28px;
  border-top: 1px solid #2B332B;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: #8A978A;
}

@media (max-width: 1024px) {
  body { padding-top: 64px; }
  .site-header, .header-inner { height: 64px; }
  .header-inner { gap: 12px; }
  .main-nav, .header-search { display: none; }
  .menu-btn { display: flex; }
  .header-link { display: none; }
  .related-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .container { padding: 0 20px; }
  .header-cta { display: none; }
  .logo-text { font-size: 17px; }
  .logo-mark { width: 30px; height: 30px; font-size: 12px; }

  .article-hero { padding: 36px 0 28px; }
  .breadcrumb { margin-bottom: 20px; font-size: 12px; flex-wrap: wrap; }
  .article-heading h1 { font-size: 30px; }
  .article-meta { flex-direction: column; gap: 8px; font-size: 13px; }
  .article-body { padding: 26px 20px; font-size: 16px; border-radius: 10px; }
  .article-body p { font-size: 16px; line-height: 1.85; }
  .article-body h2 { font-size: 22px; }
  .article-body h3 { font-size: 18px; }
  .article-layout { padding: 0; }
  .article-body pre { padding: 16px; }
  .article-cta { padding: 30px 22px; flex-direction: column; align-items: flex-start; }
  .article-cta-title { font-size: 19px; }
  .article-cta .btn { width: 100%; }
  .related-grid { grid-template-columns: 1fr; }
  .related-card h3 { font-size: 17px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px 24px; padding: 44px 0 28px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; align-items: flex-start; padding: 20px 0 24px; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .article-hero { padding: 28px 0 24px; }
  .article-heading h1 { font-size: 24px; }
  .category-pill { font-size: 11px; margin-bottom: 14px; }
  .article-body p { margin-bottom: 20px; }
  .article-heading h1 { letter-spacing: -0.01em; }
  .related-section { padding: 44px 0 48px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* roulang page: category1 */
:root {
    --paper: #F4F2EC;
    --surface: #FFFFFF;
    --soft: #E9E7DF;
    --ink: #101410;
    --panel: #0C100D;
    --deepgray: #2A3028;
    --muted: #6B756B;
    --divider: #DDE1D8;
    --darkline: #2B332B;
    --accent: #CFF25C;
    --accentdark: #A8C93D;
    --radius: 8px;
    --radius-sm: 6px;
    --shadow-soft: 0 12px 32px -12px rgba(16, 20, 16, 0.18);
    --shadow-lift: 0 20px 48px -20px rgba(16, 20, 16, 0.32);
    --container: 1200px;
  }

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

  html { scroll-behavior: smooth; }

  body {
    margin: 0;
    background: var(--paper);
    color: var(--deepgray);
    font-family: "PingFang SC", "HarmonyOS Sans SC", "Noto Sans CJK SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 16px;
    line-height: 1.75;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
  }

  h1, h2, h3, h4, p, ul, ol, figure { margin: 0; }
  a { color: inherit; text-decoration: none; }
  img { display: block; max-width: 100%; }
  button, input { font: inherit; }
  input:focus { outline: none; }

  .container {
    max-width: var(--container);
    margin: 0 auto;
    padding-left: 32px;
    padding-right: 32px;
  }

  /* --------------------------------------------- */
  /* Header                                        */
  /* --------------------------------------------- */
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 72px;
    z-index: 60;
    background: rgba(244, 242, 236, 0.86);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(16, 20, 16, 0.06);
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  }

  .site-header.scrolled {
    background: rgba(244, 242, 236, 0.96);
    border-bottom-color: rgba(16, 20, 16, 0.12);
    box-shadow: 0 8px 30px -22px rgba(16, 20, 16, 0.4);
  }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 28px;
  }

  .logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--ink);
    letter-spacing: -0.01em;
  }

  .logo-mark {
    width: 34px;
    height: 34px;
    border-radius: 8px;
    background: var(--ink);
    color: var(--accent);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: "Manrope", "Inter", "JetBrains Mono", sans-serif;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.06em;
  }

  .main-nav ul {
    display: flex;
    align-items: center;
    gap: 2px;
    list-style: none;
    padding: 0;
  }

  .main-nav .nav-link {
    display: inline-flex;
    align-items: center;
    padding: 7px 13px;
    border-radius: 6px;
    font-size: 15px;
    color: var(--deepgray);
    transition: color 0.2s ease, background 0.2s ease;
  }

  .main-nav .nav-link:hover {
    background: rgba(16, 20, 16, 0.06);
    color: var(--ink);
  }

  .main-nav .nav-link.active {
    color: var(--ink);
    font-weight: 600;
    background: transparent;
    box-shadow: inset 0 -2px 0 var(--accent);
    border-radius: 0;
  }

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

  .header-search {
    display: flex;
    align-items: center;
    gap: 6px;
    width: 180px;
    height: 38px;
    padding: 0 12px;
    background: rgba(16, 20, 16, 0.05);
    border: 1px solid transparent;
    border-radius: 8px;
    transition: all 0.2s ease;
  }

  .header-search:focus-within {
    background: var(--surface);
    border-color: var(--accentdark);
    box-shadow: 0 0 0 3px rgba(207, 242, 92, 0.38);
  }

  .header-search input {
    width: 100%;
    border: none;
    background: transparent;
    color: var(--ink);
    font-size: 13px;
  }

  .header-search input::placeholder {
    color: var(--muted);
  }

  .login-link {
    font-size: 14px;
    color: var(--deepgray);
    padding: 6px 4px;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s ease;
    white-space: nowrap;
  }

  .login-link:hover {
    border-bottom-color: var(--ink);
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 44px;
    padding: 0 20px;
    border-radius: 8px;
    border: 1px solid transparent;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    white-space: nowrap;
  }

  .btn:active {
    transform: translateY(1px) scale(0.99);
  }

  .btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--ink);
  }

  .btn-primary:hover {
    transform: translateY(-1px);
    background: #d8fa6d;
    border-color: #d8fa6d;
    box-shadow: 0 8px 24px -14px rgba(168, 201, 61, 0.8);
  }

  .btn-secondary {
    background: transparent;
    border-color: rgba(16, 20, 16, 0.24);
    color: var(--ink);
  }

  .btn-secondary:hover {
    border-color: var(--ink);
    background: rgba(16, 20, 16, 0.04);
  }

  .btn-ghost-light {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.28);
    color: #fff;
  }

  .btn-ghost-light:hover {
    background: rgba(255, 255, 255, 0.16);
    border-color: rgba(255, 255, 255, 0.6);
  }

  .btn-sm {
    height: 38px;
    padding: 0 16px;
    font-size: 14px;
  }

  .nav-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border: none;
    background: var(--surface);
    border-radius: 8px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
  }

  .nav-toggle span {
    width: 18px;
    height: 2px;
    background: var(--ink);
    border-radius: 4px;
    transition: all 0.3s ease;
  }

  .nav-toggle.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle.open span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .mobile-menu {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    width: 100%;
    max-height: calc(100vh - 64px);
    overflow-y: auto;
    background: var(--paper);
    padding: 24px 20px 40px;
    border-bottom: 1px solid var(--divider);
    z-index: 55;
    box-shadow: 0 24px 48px -24px rgba(16, 20, 16, 0.35);
  }

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

  .mobile-menu ul {
    list-style: none;
    padding: 0;
    margin: 0;
  }

  .mobile-menu li + li {
    margin-top: 6px;
  }

  .mobile-menu a {
    display: block;
    padding: 11px 12px;
    font-size: 16px;
    border-radius: 8px;
    color: var(--deepgray);
  }

  .mobile-menu a:hover,
  .mobile-menu a.active {
    background: var(--soft);
    color: var(--ink);
    font-weight: 600;
  }

  /* --------------------------------------------- */
  /* Category Hero                                 */
  /* --------------------------------------------- */
  .page-hero {
    position: relative;
    background-color: #0c100d;
    background-image: linear-gradient(115deg, rgba(12, 16, 13, 0.98) 20%, rgba(12, 16, 13, 0.88) 60%, rgba(16, 20, 16, 0.60) 100%), url('/assets/images/backpic/back-1.png');
    background-position: center;
    background-size: cover;
    color: #fff;
    padding: 120px 0 96px;
    overflow: hidden;
  }

  .page-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 64px;
    align-items: center;
  }

  .breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 28px;
  }

  .breadcrumb a {
    color: rgba(255, 255, 255, 0.72);
    transition: color 0.2s ease;
  }

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

  .breadcrumb span:last-child {
    color: var(--accent);
  }

  .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: "JetBrains Mono", "SFMono-Regular", "Consolas", monospace;
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent);
    background: rgba(207, 242, 92, 0.12);
    border: 1px solid rgba(207, 242, 92, 0.22);
    padding: 6px 12px;
    border-radius: 999px;
    margin-bottom: 18px;
  }

  .eyebrow-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
  }

  .page-hero h1 {
    font-size: clamp(2.3rem, 5vw, 4.2rem);
    line-height: 1.16;
    letter-spacing: -0.04em;
    font-weight: 700;
    color: #fff;
    margin-bottom: 22px;
  }

  .page-hero .lead {
    font-size: 1.1rem;
    line-height: 1.9;
    color: rgba(255, 255, 255, 0.74);
    max-width: 560px;
    margin-bottom: 30px;
  }

  .page-hero .button-row {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 24px;
  }

  .page-hero .hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 24px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.52);
  }

  .hero-meta span {
    display: inline-flex;
    align-items: center;
    gap: 7px;
  }

  .hero-meta span::before {
    content: "";
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--accentdark);
  }

  .browser-frame {
    position: relative;
    border-radius: 12px;
    background: #171b18;
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 32px 80px -28px rgba(0, 0, 0, 0.7);
    overflow: hidden;
    transform: perspective(1200px) rotateY(-1.5deg) rotateX(0.6deg);
    transition: transform 0.5s ease;
  }

  .browser-frame:hover {
    transform: perspective(1200px) rotateY(0deg) rotateX(0deg);
  }

  .browser-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    height: 42px;
    padding: 0 16px;
    background: #1c211d;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .browser-bar .dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: #565d57;
  }

  .browser-bar .dot:first-child {
    background: #fa6b5f;
  }

  .browser-bar .dot:nth-child(2) {
    background: #f7bd4e;
  }

  .browser-bar .dot:nth-child(3) {
    background: #61c454;
  }

  .browser-url {
    margin-left: 8px;
    font-size: 11px;
    color: rgba(255, 255, 255, 0.38);
    font-family: "JetBrains Mono", "Consolas", monospace;
  }

  .browser-frame img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
  }

  .floating-card {
    position: absolute;
    left: -24px;
    bottom: 34px;
    background: #fff;
    border-radius: 12px;
    padding: 14px 18px;
    box-shadow: var(--shadow-soft);
    display: flex;
    align-items: center;
    gap: 12px;
    max-width: 220px;
    transform: rotate(-2deg);
  }

  .floating-card .float-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: var(--accent);
    color: var(--ink);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
  }

  .floating-card .float-text {
    font-size: 13px;
    line-height: 1.5;
    color: var(--deepgray);
  }

  .floating-card .float-text strong {
    display: block;
    color: var(--ink);
    font-size: 14px;
  }

  /* --------------------------------------------- */
  /* Quick anchors                                 */
  /* --------------------------------------------- */
  .quick-anchors {
    background: var(--paper);
    border-bottom: 1px solid var(--divider);
  }

  .quick-anchor-inner {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--divider);
    border-left: 1px solid var(--divider);
    border-right: 1px solid var(--divider);
  }

  .quick-anchor {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    background: var(--paper);
    padding: 24px 20px;
    transition: background 0.25s ease;
  }

  .quick-anchor:hover {
    background: #fff;
  }

  .quick-anchor svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    margin-top: 3px;
    color: var(--ink);
  }

  .quick-anchor strong {
    display: block;
    color: var(--ink);
    font-size: 15px;
    margin-bottom: 2px;
  }

  .quick-anchor span {
    font-size: 13px;
    color: var(--muted);
  }

  /* --------------------------------------------- */
  /* Sections                                      */
  /* --------------------------------------------- */
  .section {
    padding: 96px 0;
  }

  .section.paper-bg { background: var(--paper); }
  .section.white-bg { background: var(--surface); }
  .section.soft-bg { background: #eceadf; }

  .section-head {
    max-width: 760px;
    margin-bottom: 56px;
  }

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

  .section-tag {
    font-family: "JetBrains Mono", "SFMono-Regular", "Consolas", monospace;
    font-size: 12px;
    letter-spacing: 0.12em;
    color: var(--accentdark);
    text-transform: uppercase;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 14px;
  }

  .section-tag::before {
    content: "";
    width: 22px;
    height: 2px;
    background: var(--accentdark);
    display: inline-block;
  }

  .section-title {
    font-size: clamp(1.7rem, 3vw, 2.7rem);
    line-height: 1.3;
    letter-spacing: -0.03em;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 16px;
  }

  .section-desc {
    font-size: 1rem;
    line-height: 1.9;
    color: var(--muted);
  }

  /* --------------------------------------------- */
  /* Guide steps                                   */
  /* --------------------------------------------- */
  .guide-step-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .guide-step {
    position: relative;
    background: #fff;
    border: 1px solid var(--divider);
    border-radius: 12px;
    padding: 34px 30px 34px 70px;
    overflow: hidden;
    transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
  }

  .guide-step:hover {
    border-color: rgba(16, 20, 16, 0.2);
    transform: translateY(-4px);
    box-shadow: var(--shadow-soft);
  }

  .guide-step .step-num {
    position: absolute;
    left: 24px;
    top: 30px;
    width: 34px;
    height: 34px;
    border-radius: 8px;
    background: var(--soft);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: "JetBrains Mono", "Inter", sans-serif;
    font-size: 13px;
    font-weight: 700;
    color: var(--ink);
  }

  .guide-step:nth-child(even) .step-num {
    background: var(--accent);
  }

  .guide-step h3 {
    font-size: 1.24rem;
    color: var(--ink);
    letter-spacing: -0.01em;
    margin-bottom: 8px;
  }

  .guide-step p {
    font-size: 0.96rem;
    line-height: 1.8;
    color: var(--muted);
  }

  .guide-step ul {
    list-style: none;
    padding: 0;
    margin: 12px 0 0;
  }

  .guide-step ul li {
    position: relative;
    padding-left: 18px;
    font-size: 0.9rem;
    line-height: 1.8;
    color: var(--deepgray);
  }

  .guide-step ul li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--accentdark);
    font-weight: 700;
  }

  /* --------------------------------------------- */
  /* Scenario bento                                */
  /* --------------------------------------------- */
  .scenario-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 20px;
  }

  .scenario-card {
    border-radius: 14px;
    padding: 36px;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--divider);
  }

  .scenario-primary {
    background: var(--ink);
    color: rgba(255, 255, 255, 0.76);
    border-color: var(--ink);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 360px;
  }

  .scenario-primary h3 {
    color: #fff;
    font-size: 1.9rem;
    line-height: 1.4;
    max-width: 420px;
    margin: 24px 0 16px;
  }

  .scenario-primary p {
    max-width: 430px;
    font-size: 1rem;
  }

  .scenario-stack {
    display: flex;
    flex-direction: column;
    gap: 20px;
  }

  .scenario-card {
    background: #fff;
  }

  .scenario-card-light {
    background: #fff;
    border-color: var(--divider);
  }

  .scenario-card-accent {
    background: var(--accent);
    border-color: var(--accentdark);
    color: var(--ink);
  }

  .scenario-card h4 {
    font-size: 1.08rem;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 8px;
  }

  .scenario-card p {
    font-size: 0.94rem;
    line-height: 1.75;
    color: var(--deepgray);
  }

  .scenario-card-accent p {
    color: #1a1f18;
  }

  .scenario-list {
    list-style: none;
    padding: 0;
    margin: 18px 0 0;
  }

  .scenario-list li {
    font-size: 0.92rem;
    padding-left: 20px;
    position: relative;
    line-height: 1.8;
  }

  .scenario-list li::before {
    content: "＋";
    position: absolute;
    left: 0;
    font-weight: 700;
    color: var(--accentdark);
  }

  /* --------------------------------------------- */
  /* Dark checklist                                */
  /* --------------------------------------------- */
  .dark-checklist {
    background-color: #0c100d;
    background-image: linear-gradient(135deg, rgba(12, 16, 13, 0.98) 0%, rgba(16, 20, 16, 0.96) 100%), url('/assets/images/backpic/back-2.png');
    background-size: cover;
    background-position: center;
    color: #fff;
  }

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

  .dark-checklist .section-desc {
    color: rgba(255, 255, 255, 0.68);
  }

  .checklist-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
    gap: 48px;
    align-items: start;
  }

  .checklist-note {
    background: rgba(255, 255, 255, 0.06);
    border-left: 3px solid var(--accent);
    padding: 22px 24px;
    border-radius: 0 10px 10px 0;
    font-size: 0.98rem;
    color: rgba(255, 255, 255, 0.78);
    line-height: 1.85;
    margin-top: 26px;
  }

  .checklist-list {
    border-top: 1px solid var(--darkline);
  }

  .checklist-row {
    display: flex;
    align-items: flex-start;
    gap: 18px;
    padding: 20px 0;
    border-bottom: 1px solid var(--darkline);
    transition: background 0.2s ease;
    cursor: default;
  }

  .checklist-row:hover {
    background: rgba(255, 255, 255, 0.03);
  }

  .checklist-row .check-index {
    font-family: "JetBrains Mono", "Consolas", monospace;
    font-size: 12px;
    color: var(--accent);
    background: rgba(207, 242, 92, 0.1);
    border: 1px solid rgba(207, 242, 92, 0.16);
    border-radius: 6px;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 2px;
  }

  .checklist-row .row-title {
    display: block;
    font-weight: 600;
    color: #fff;
    margin-bottom: 4px;
  }

  .checklist-row .row-desc {
    color: rgba(255, 255, 255, 0.62);
    font-size: 0.94rem;
    line-height: 1.7;
  }

  .checklist-row .row-arrow {
    margin-left: auto;
    color: rgba(255, 255, 255, 0.34);
    flex-shrink: 0;
  }

  /* --------------------------------------------- */
  /* FAQ                                            */
  /* --------------------------------------------- */
  .faq-layout {
    display: grid;
    grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
    gap: 48px;
  }

  .faq-aside .section-title {
    margin-bottom: 14px;
  }

  .faq-aside p {
    color: var(--muted);
    font-size: 1rem;
    line-height: 1.85;
    margin-bottom: 24px;
  }

  .faq-list {
    border-top: 1px solid var(--divider);
  }

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

  .faq-item button {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    background: none;
    border: none;
    padding: 20px 4px;
    cursor: pointer;
    color: var(--ink);
    font-size: 17px;
    font-weight: 600;
    text-align: left;
    transition: color 0.2s ease;
  }

  .faq-item button:hover {
    color: #465c0b;
  }

  .faq-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    position: relative;
  }

  .faq-icon::before,
  .faq-icon::after {
    content: "";
    position: absolute;
    background: var(--ink);
    border-radius: 3px;
    transition: transform 0.3s ease;
  }

  .faq-icon::before {
    top: 11px;
    left: 2px;
    width: 20px;
    height: 2px;
  }

  .faq-icon::after {
    top: 2px;
    left: 11px;
    width: 2px;
    height: 20px;
  }

  .faq-item.open .faq-icon::after {
    transform: rotate(90deg);
  }

  .faq-panel {
    height: 0;
    overflow: hidden;
    transition: height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .faq-answer {
    padding: 0 48px 24px 4px;
    font-size: 15px;
    line-height: 1.9;
    color: var(--deepgray);
  }

  /* --------------------------------------------- */
  /* Bottom CTA                                    */
  /* --------------------------------------------- */
  .guide-next-banner {
    position: relative;
    background-color: #0c100d;
    background-image: linear-gradient(120deg, rgba(12, 16, 13, 0.92) 30%, rgba(12, 16, 13, 0.82)), url('/assets/images/backpic/back-3.webp');
    background-size: cover;
    background-position: center;
    border-radius: 20px;
    overflow: hidden;
    padding: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
  }

  .guide-next-banner h2 {
    color: #fff;
    font-size: 2rem;
    margin-bottom: 12px;
  }

  .guide-next-banner p {
    color: rgba(255, 255, 255, 0.68);
    font-size: 1rem;
    max-width: 520px;
  }

  .guide-next-banner .btn-row {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    flex-shrink: 0;
  }

  /* --------------------------------------------- */
  /* Footer                                        */
  /* --------------------------------------------- */
  .footer {
    background: #0c100d;
    color: #aab2a9;
    padding: 72px 0 32px;
    margin-top: 0;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 0.9fr 0.9fr 0.9fr;
    gap: 48px 32px;
    padding-bottom: 48px;
  }

  .footer-brand .logo {
    color: #fff;
    margin-bottom: 16px;
  }

  .footer-brand p {
    font-size: 0.92rem;
    line-height: 1.9;
    color: rgba(255, 255, 255, 0.54);
    max-width: 320px;
    margin-top: 14px;
  }

  .footer-version {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 22px;
    font-family: "JetBrains Mono", "Consolas", monospace;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.5);
    background: rgba(255, 255, 255, 0.07);
    border-radius: 6px;
    padding: 5px 10px;
  }

  .footer h4 {
    color: #fff;
    font-size: 14px;
    letter-spacing: 0.04em;
    margin-bottom: 18px;
    font-weight: 600;
  }

  .footer ul {
    list-style: none;
    padding: 0;
    margin: 0;
  }

  .footer li + li {
    margin-top: 10px;
  }

  .footer a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.58);
    transition: color 0.2s ease;
  }

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

  .footer-bottom {
    border-top: 1px solid #223022;
    padding-top: 28px;
    display: flex;
    justify-content: space-between;
    gap: 16px;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.38);
  }

  /* --------------------------------------------- */
  /* Responsive                                    */
  /* --------------------------------------------- */
  @media (max-width: 1024px) {
    .main-nav {
      display: none;
    }

    .nav-toggle {
      display: flex;
    }

    .header-search {
      display: none;
    }

    .header-actions .login-link {
      display: none;
    }

    .site-header,
    .header-inner {
      height: 64px;
    }

    .mobile-menu {
      top: 64px;
    }

    .page-hero {
      padding: 96px 0 72px;
    }

    .page-hero-grid {
      grid-template-columns: 1fr;
      gap: 52px;
    }

    .browser-frame {
      max-width: 640px;
    }

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

    .section {
      padding: 80px 0;
    }

    .checklist-grid,
    .faq-layout {
      grid-template-columns: 1fr;
      gap: 40px;
    }

    .guide-next-banner {
      flex-direction: column;
      padding: 48px 24px;
    }
  }

  @media (max-width: 760px) {
    .container {
      padding-left: 20px;
      padding-right: 20px;
    }

    .header-actions .btn {
      height: 38px;
      font-size: 14px;
      padding: 0 14px;
    }

    .page-hero {
      padding: 92px 0 56px;
    }

    .page-hero h1 {
      font-size: 2rem;
    }

    .page-hero .lead {
      font-size: 1rem;
    }

    .button-row .btn {
      width: 100%;
    }

    .floating-card {
      display: none;
    }

    .quick-anchor-inner {
      grid-template-columns: 1fr;
    }

    .quick-anchor {
      padding: 18px 16px;
    }

    .section {
      padding: 64px 0;
    }

    .guide-step-grid {
      grid-template-columns: 1fr;
    }

    .guide-step {
      padding: 24px 20px 24px 54px;
    }

    .guide-step .step-num {
      left: 16px;
      top: 22px;
    }

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

    .scenario-primary {
      min-height: auto;
    }

    .scenario-card {
      padding: 24px;
    }

    .faq-item button {
      font-size: 15px;
    }

    .faq-answer {
      padding-right: 0;
    }

    .footer-grid {
      grid-template-columns: 1fr;
      gap: 28px;
    }

    .footer-bottom {
      flex-direction: column;
    }
  }

/* roulang page: category2 */
:root {
      --paper: #F4F2EC;
      --white: #FFFFFF;
      --soft: #E9E7DF;
      --ink: #101410;
      --ink-90: #1A1F1A;
      --deep: #0C100D;
      --text-copy: #2A3028;
      --text-muted: #6B756B;
      --line: #DDE1D8;
      --line-dark: #2B332B;
      --signal: #CFF25C;
      --green-deep: #A8C93D;
      --radius: 8px;
      --radius-sm: 6px;
      --shadow: 0 12px 32px -12px rgba(16,20,16,.18);
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: "PingFang SC", "HarmonyOS Sans SC", "Noto Sans CJK SC", "Microsoft YaHei", "Inter", sans-serif;
      background: var(--paper);
      color: var(--text-copy);
      line-height: 1.75;
      letter-spacing: .01em;
      margin: 0;
    }

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

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

    button,
    input {
      font-family: inherit;
    }

    a:focus-visible,
    button:focus-visible,
    input:focus-visible {
      outline: 3px solid rgba(168, 201, 61, .55);
      outline-offset: 2px;
    }

    .shell {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    @media (min-width: 768px) {
      .shell {
        padding-left: 32px;
        padding-right: 32px;
      }
    }

    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 50;
      height: 72px;
      background: rgba(244, 242, 236, .82);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      transition: background .3s ease, border-color .3s ease, box-shadow .3s ease;
      border-bottom: 1px solid transparent;
    }

    .site-header.scrolled {
      background: rgba(244, 242, 236, .92);
      border-bottom-color: rgba(16, 20, 16, .08);
      box-shadow: 0 6px 24px -18px rgba(16, 20, 16, .2);
    }

    .header-inner {
      display: flex;
      align-items: center;
      height: 72px;
      gap: 16px;
      position: relative;
    }

    .logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }

    .logo-mark {
      width: 36px;
      height: 36px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--signal);
      border-radius: 10px;
      color: var(--ink);
      font-weight: 800;
      letter-spacing: -.04em;
      font-size: .82rem;
      font-family: "Inter", "JetBrains Mono", monospace;
      transform: rotate(-3deg);
      transition: transform .25s ease;
    }

    .logo:hover .logo-mark {
      transform: rotate(0deg);
    }

    .logo-text {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--ink);
      letter-spacing: .01em;
    }

    .main-nav {
      margin-left: auto;
    }

    .main-nav ul {
      list-style: none;
      display: flex;
      align-items: center;
      gap: 4px;
      margin: 0;
      padding: 0;
    }

    .main-nav .nav-link {
      position: relative;
      display: inline-block;
      padding: 10px 14px;
      font-size: .95rem;
      color: #485049;
      border-radius: 6px;
      transition: color .2s ease, background .2s ease;
      background: transparent;
      border: 0;
      cursor: pointer;
    }

    .main-nav .nav-link:hover {
      color: var(--ink);
      background: rgba(16, 20, 16, .05);
    }

    .main-nav .nav-link.active {
      color: var(--ink);
      font-weight: 600;
    }

    .main-nav .nav-link.active::after {
      content: "";
      position: absolute;
      left: 14px;
      right: 14px;
      bottom: 6px;
      height: 2px;
      background: var(--signal);
      border-radius: 2px 2px 0 0;
    }

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

    .search-box {
      position: relative;
      display: none;
      align-items: center;
    }

    .search-box input {
      width: 176px;
      height: 40px;
      padding-left: 36px;
      padding-right: 12px;
      font-size: .875rem;
      color: var(--ink);
      background: rgba(16, 20, 16, .05);
      border: 1px solid transparent;
      border-radius: var(--radius);
      transition: all .2s ease;
    }

    .search-box input::placeholder {
      color: #8b948b;
    }

    .search-box input:focus {
      background: #fff;
      border-color: var(--signal);
      box-shadow: 0 0 0 3px rgba(207, 242, 92, .35);
      outline: none;
    }

    .search-box svg {
      position: absolute;
      left: 10px;
      width: 17px;
      height: 17px;
      color: #6D756D;
      pointer-events: none;
    }

    .header-login {
      font-size: .9rem;
      color: var(--text-copy);
      padding: 8px 4px;
      transition: .2s;
      white-space: nowrap;
    }

    .header-login:hover {
      text-decoration: underline;
      text-underline-offset: 4px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 46px;
      padding: 0 22px;
      border-radius: var(--radius);
      font-size: .95rem;
      font-weight: 600;
      border: 1px solid transparent;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
      cursor: pointer;
      white-space: nowrap;
    }

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

    .btn-green {
      background: var(--signal);
      color: var(--ink);
      border-color: #b7d94a;
    }

    .btn-green:hover {
      background: #d8fb72;
      box-shadow: 0 8px 20px -10px rgba(160, 195, 50, .6);
      transform: translateY(-1px);
    }

    .btn-outline-dark {
      background: transparent;
      border-color: #9aA491;
      color: var(--ink);
    }

    .btn-outline-dark:hover {
      background: rgba(16, 20, 16, .05);
      border-color: var(--ink);
    }

    .menu-toggle {
      display: none;
      align-items: center;
      justify-content: center;
      width: 42px;
      height: 42px;
      border-radius: 8px;
      border: 1px solid rgba(16, 20, 16, .16);
      background: #fff;
      color: var(--ink);
      cursor: pointer;
    }

    .page-main {
      padding-top: 72px;
    }

    .lead-section {
      padding: 84px 0 70px;
      background:
        radial-gradient(circle at 82% 12%, rgba(207, 242, 92, .2), transparent 30%),
        linear-gradient(180deg, rgba(233, 231, 223, .4), rgba(244, 242, 236, 0)),
        var(--paper);
      border-bottom: 1px solid rgba(16, 20, 16, .04);
      position: relative;
      overflow: hidden;
    }

    .lead-section::after {
      content: "";
      position: absolute;
      right: -140px;
      top: 40px;
      width: 420px;
      height: 420px;
      border-radius: 50%;
      border: 1px solid rgba(16, 20, 16, .06);
      pointer-events: none;
    }

    .breadcrumb {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 6px;
      font-size: .87rem;
      color: var(--text-muted);
      margin-bottom: 40px;
    }

    .breadcrumb a {
      transition: color .2s;
    }

    .breadcrumb a:hover {
      color: var(--ink);
    }

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

    .lead-grid {
      display: grid;
      grid-template-columns: 1.15fr .85fr;
      gap: 56px;
      align-items: center;
    }

    .lead-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: .78rem;
      font-weight: 600;
      letter-spacing: .12em;
      text-transform: uppercase;
      color: #4d6330;
      background: rgba(168, 201, 61, .13);
      padding: 6px 12px 6px 10px;
      border-radius: 999px;
      margin-bottom: 22px;
    }

    .lead-kicker::before {
      content: "";
      width: 6px;
      height: 6px;
      background: var(--leaf);
      border-radius: 50%;
    }

    .lead-title {
      font-size: clamp(2.4rem, 6vw, 4rem);
      line-height: 1.12;
      color: var(--ink);
      font-weight: 700;
      letter-spacing: -.02em;
      margin: 0 0 24px;
    }

    .lead-title .soft-var {
      color: #4b4b45;
      font-weight: 600;
      position: relative;
      display: inline-block;
    }

    .lead-title .underline-stroke {
      border-bottom: 4px solid var(--signal);
      padding-bottom: 2px;
    }

    .lead-copy {
      font-size: 1.1rem;
      line-height: 1.95;
      color: #49524a;
      max-width: 590px;
      margin-bottom: 32px;
    }

    .lead-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      align-items: center;
      margin-bottom: 28px;
    }

    .lead-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .chip {
      display: inline-flex;
      align-items: center;
      font-size: .83rem;
      color: #5b645c;
      background: #fff;
      border: 1px solid rgba(16, 20, 16, .1);
      border-radius: 999px;
      padding: 5px 12px;
      font-family: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
    }

    .browser-shot {
      background: #101410;
      border: 1px solid rgba(255, 255, 255, .14);
      border-radius: 16px;
      overflow: hidden;
      box-shadow: 0 28px 64px -24px rgba(16, 20, 16, .5);
      transform: rotate(1.2deg);
    }

    .browser-bar {
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 14px 16px;
      background: #181d18;
      border-bottom: 1px solid rgba(255, 255, 255, .08);
    }

    .browser-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
    }

    .browser-address {
      margin-left: 12px;
      flex: 1;
      max-width: 260px;
      color: #a9b3a8;
      font-size: .75rem;
      background: #292f29;
      padding: 5px 14px;
      border-radius: 6px;
      font-family: "JetBrains Mono", monospace;
    }

    .section-pad {
      padding: 88px 0;
    }

    .article-editorial {
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 62px;
      align-items: start;
    }

    .section-label {
      display: inline-flex;
      font-size: .78rem;
      font-weight: 600;
      letter-spacing: .14em;
      text-transform: uppercase;
      color: #6B756B;
      margin-bottom: 14px;
    }

    .section-title {
      font-size: clamp(1.8rem, 3.4vw, 2.7rem);
      line-height: 1.25;
      font-weight: 700;
      color: var(--ink);
      letter-spacing: -.015em;
      margin: 0 0 20px;
    }

    .section-lead {
      font-size: 1rem;
      line-height: 1.9;
      color: #4b544c;
      margin: 0 0 28px;
    }

    .card-list {
      display: flex;
      flex-direction: column;
      gap: 14px;
      counter-reset: list-counter;
    }

    .deploy-card {
      counter-increment: list-counter;
      display: flex;
      align-items: flex-start;
      gap: 16px;
      background: #fff;
      border: 1px solid rgba(16, 20, 16, .08);
      border-radius: 12px;
      padding: 22px;
      transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
    }

    .deploy-card:hover {
      border-color: rgba(16, 20, 16, .17);
      box-shadow: var(--shadow);
      transform: translateY(-2px);
    }

    .deploy-card-num {
      font-family: "Inter", "JetBrains Mono", monospace;
      font-weight: 700;
      color: var(--signal);
      background: #11150f;
      border: 1px solid #2a312a;
      width: 40px;
      height: 40px;
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: .9rem;
      flex-shrink: 0;
      letter-spacing: -.03em;
    }

    .deploy-content h3 {
      font-size: 1.1rem;
      font-weight: 600;
      color: var(--ink);
      margin: 0 0 8px;
    }

    .deploy-content p {
      font-size: .94rem;
      line-height: 1.8;
      color: #5f6860;
      margin: 0;
    }

    .split-soft-right {
      background: #EDEBE3;
      border-radius: 18px;
      padding: clamp(20px, 3vw, 42px);
      position: relative;
      overflow: hidden;
      border: 1px solid rgba(16, 20, 16, .06);
    }

    .split-soft-right::after {
      content: "";
      position: absolute;
      width: 220px;
      height: 220px;
      right: -80px;
      bottom: -80px;
      background: rgba(207, 242, 92, .18);
      border-radius: 50%;
    }

    .point-list {
      display: flex;
      flex-direction: column;
      gap: 22px;
      list-style: none;
      margin: 0;
      padding: 0;
      position: relative;
      z-index: 1;
    }

    .point-list li {
      display: flex;
      gap: 16px;
      align-items: flex-start;
    }

    .point-icon {
      flex-shrink: 0;
      width: 36px;
      height: 36px;
      background: #fff;
      border: 1px solid rgba(16, 20, 16, .09);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--ink);
      box-shadow: 0 6px 16px -10px rgba(16, 20, 16, .3);
    }

    .point-copy strong {
      display: block;
      font-weight: 600;
      color: var(--ink);
      font-size: 1rem;
      margin-bottom: 3px;
    }

    .point-copy span {
      color: #626b63;
      font-size: .93rem;
      line-height: 1.75;
    }

    .dark-band {
      background: #0B0E0B;
      color: #fff;
      position: relative;
      overflow: hidden;
    }

    .dark-band .section-label,
    .dark-band .section-lead {
      color: #98a298;
    }

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

    .band-copy {
      position: relative;
      z-index: 2;
    }

    .check-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
      position: relative;
      z-index: 2;
    }

    .check-item {
      border: 1px solid var(--line-dark);
      border-radius: 14px;
      background: rgba(255, 255, 255, .03);
      padding: 22px;
      transition: .25s;
    }

    .check-item:hover {
      background: rgba(207, 242, 92, .08);
      border-color: rgba(207, 242, 92, .45);
    }

    .check-item strong {
      display: block;
      font-size: 1rem;
      margin-bottom: 8px;
      color: #fff;
    }

    .check-item span {
      color: #A8B2A8;
      font-size: .93rem;
      line-height: 1.85;
      display: block;
    }

    .process-wrap {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 22px;
    }

    .process-step {
      background: #fff;
      border: 1px solid rgba(16, 20, 16, .08);
      border-radius: 16px;
      padding: 30px 24px 26px;
      position: relative;
    }

    .step-no {
      font-family: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
      font-size: .8rem;
      font-weight: 600;
      letter-spacing: .03em;
      color: #5f6a5f;
      margin-bottom: 12px;
      display: block;
    }

    .step-title {
      font-weight: 700;
      color: var(--ink);
      font-size: 1.05rem;
      margin-bottom: 10px;
      display: block;
    }

    .step-info {
      color: #6d766e;
      font-size: .94rem;
      line-height: 1.85;
    }

    .lead-connector {
      position: absolute;
      width: 10px;
      height: 10px;
      background: var(--signal);
      border-radius: 50%;
    }

    .env-wrap {
      display: grid;
      grid-template-columns: 1fr .95fr;
      border: 1px solid rgba(16, 20, 16, .1);
      border-radius: 20px;
      overflow: hidden;
      background: #fff;
    }

    .env-visual {
      background: #11140f;
      display: flex;
      align-items: flex-end;
      justify-content: center;
      min-height: 300px;
      position: relative;
      padding: 26px;
    }

    .env-list {
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .env-list li {
      display: flex;
      justify-content: space-between;
      gap: 30px;
      padding: 17px 0;
      border-bottom: 1px solid rgba(16, 20, 16, .08);
    }

    .env-list li:last-child {
      border-bottom: 0;
    }

    .env-list dt {
      font-weight: 600;
      color: var(--ink);
      font-size: .92rem;
    }

    .env-list dd {
      color: #616B63;
      margin: 0;
      font-size: .92rem;
      text-align: right;
      line-height: 1.7;
    }

    .cover-card {
      background: #fff;
      border: 1px solid rgba(16, 20, 16, .08);
      border-radius: 16px;
      overflow: hidden;
    }

    .faq-wrap {
      display: grid;
      grid-template-columns: .75fr 1.25fr;
      gap: 54px;
      align-items: start;
    }

    .faq-panel {
      border-top: 1px solid rgba(16, 20, 16, .08);
    }

    .faq-item {
      border-bottom: 1px solid rgba(16, 20, 16, .08);
    }

    .faq-q {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      font-size: 1rem;
      font-weight: 600;
      color: var(--ink);
      padding: 20px 2px;
      background: none;
      border: 0;
      cursor: pointer;
      text-align: left;
      min-height: 58px;
      transition: color .2s;
    }

    .faq-q:hover {
      color: #3f4c21;
    }

    .faq-icon {
      width: 26px;
      height: 26px;
      position: relative;
      flex-shrink: 0;
    }

    .faq-icon::before,
    .faq-icon::after {
      content: "";
      position: absolute;
      background: var(--ink);
      border-radius: 2px;
      transition: transform .3s ease, opacity .3s ease;
      top: 11px;
      left: 4px;
      width: 18px;
      height: 2px;
    }

    .faq-icon::after {
      transform: rotate(90deg);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height .35s ease;
      color: #4d564e;
    }

    .faq-answer-inner {
      font-size: .98rem;
      line-height: 1.9;
      padding: 0 26px 24px 0;
    }

    .faq-item.open .faq-icon::after {
      transform: rotate(0deg);
      opacity: 0;
    }

    .faq-item.open .faq-answer {
      max-height: 260px;
    }

    .cta-band {
      background: #0B0E0B;
      border-radius: 24px;
      color: #fff;
      overflow: hidden;
      position: relative;
    }

    .cta-band::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image: url('/assets/images/backpic/back-3.webp');
      background-size: cover;
      background-position: center 70%;
      opacity: .14;
    }

    .cta-inner {
      position: relative;
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 46px;
      align-items: center;
      padding: clamp(28px, 6vw, 64px);
    }

    .cta-inner h2 {
      color: #fff;
      font-weight: 600;
      font-size: clamp(1.6rem, 3vw, 2.4rem);
      line-height: 1.35;
      letter-spacing: -.02em;
      margin: 0 0 12px;
    }

    .cta-inner p {
      color: #AFB8AF;
      font-size: .98rem;
      line-height: 1.9;
      margin: 0;
    }

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

    .btn-on-dark {
      background: var(--signal);
      color: #11150f;
      border-color: #d3ee7a;
    }

    .btn-on-dark:hover {
      background: #e1ff80;
      transform: translateY(-1px);
    }

    .btn-ghost-dark {
      background: transparent;
      color: #fff;
      border-color: rgba(255, 255, 255, .35);
    }

    .btn-ghost-dark:hover {
      background: rgba(255, 255, 255, .09);
      border-color: #fff;
    }

    .footer {
      background: #0C100D;
      color: #9DA69D;
      padding: 72px 0 38px;
      margin-top: 0;
    }

    .footer .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr .8fr .8fr 1fr;
      gap: 46px;
      padding-bottom: 52px;
    }

    .footer-brand .logo {
      margin-bottom: 14px;
    }

    .footer-brand .logo-text {
      color: #fff;
    }

    .footer-brand p {
      color: #8b948b;
      font-size: .94rem;
      line-height: 1.85;
      margin: 0 0 18px;
      max-width: 330px;
    }

    .footer-version {
      font-family: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
      font-size: .8rem;
      color: #5f6a60;
      letter-spacing: .02em;
    }

    .footer h4 {
      color: #fff;
      font-size: .92rem;
      font-weight: 600;
      margin: 0 0 18px;
      letter-spacing: .02em;
    }

    .footer ul {
      list-style: none;
      margin: 0;
      padding: 0;
      display: flex;
      flex-direction: column;
      gap: 11px;
    }

    .footer ul li a {
      color: #8b948b;
      font-size: .9rem;
      transition: color .2s;
    }

    .footer ul li a:hover {
      color: var(--signal);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, .08);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
      font-size: .8rem;
      color: #697168;
      font-family: "Inter", "PingFang SC", sans-serif;
    }

    @media (max-width: 1023.98px) {
      .site-header,
      .header-inner {
        height: 64px;
      }

      .page-main {
        padding-top: 64px;
      }

      .main-nav {
        display: none;
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: #F4F2EC;
        margin: 0;
        border-bottom: 1px solid rgba(16, 20, 16, .1);
        box-shadow: 0 20px 30px -24px rgba(16, 20, 16, .25);
        padding: 16px 20px 24px;
        border-radius: 0 0 14px 14px;
      }

      .menu-open .main-nav {
        display: block;
      }

      .main-nav ul {
        flex-direction: column;
        align-items: stretch;
        gap: 6px;
      }

      .main-nav .nav-link {
        display: block;
        padding: 13px 14px;
        border-radius: 8px;
        font-size: 1rem;
      }

      .main-nav .nav-link.active::after {
        display: none;
      }

      .main-nav .nav-link.active {
        background: rgba(207, 242, 92, .26);
      }

      .header-tools {
        margin-left: auto;
        gap: 6px;
      }

      .menu-toggle {
        display: inline-flex;
      }

      .search-box {
        display: none;
      }

      .header-login {
        display: none;
      }

      .btn-header {
        min-height: 40px;
        padding: 0 14px;
        font-size: .9rem;
      }

      .lead-grid {
        grid-template-columns: 1fr;
        gap: 46px;
      }

      .article-editorial,
      .faq-wrap,
      .env-wrap {
        grid-template-columns: 1fr;
      }

      .process-wrap {
        grid-template-columns: repeat(2, 1fr);
      }

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

    @media (max-width: 639.98px) {
      .section-pad {
        padding: 62px 0;
      }

      .lead-section {
        padding: 58px 0 52px;
      }

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

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

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

      .footer-bottom {
        flex-direction: column;
      }

      .cta-inner {
        grid-template-columns: 1fr;
        padding: 30px 24px;
      }

      .header-cta-desktop {
        display: none;
      }

      .browser-address {
        max-width: 110px;
        overflow: hidden;
      }

      .lead-title {
        letter-spacing: -.02em;
      }

      .env-list li {
        flex-direction: column;
        gap: 6px;
      }

      .env-list dd {
        text-align: left;
      }

      .faq-answer-inner {
        font-size: .93rem;
      }
    }

    @media (min-width: 1024px) and (max-width: 1240px) {
      .header-login {
        display: none;
      }

      .search-box input {
        width: 140px;
      }
    }

    .stroke-btn small,
    .btn small,
    .link-btn small {
      font-weight: 400;
    }

    .link-btn {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: #11140f;
      font-weight: 600;
      font-size: .93rem;
      transition: gap .2s ease, color .2s;
    }

    .link-btn:hover {
      gap: 10px;
      color: #4E6125;
    }

    .link-btn svg {
      width: 18px;
      height: 18px;
    }

    .bg-paper-soft {
      background: #EFEDE5;
    }

    .text-balance {
      text-wrap: balance;
    }

    .text-pretty {
      text-wrap: pretty;
    }