/* roulang page: index */
:root {
      --ink: #172021;
      --muted: #6d7977;
      --paper: #f3f0e9;
      --paper-deep: #e7e2d7;
      --white: #fffdf8;
      --line: #d6d1c5;
      --green: #2d6258;
      --green-dark: #214a43;
      --orange: #c76036;
      --yellow: #e6b84c;
      --shadow: 0 18px 48px rgba(24, 35, 34, .12);
      --small-shadow: 0 8px 22px rgba(24, 35, 34, .08);
      --radius: 14px;
      --max: 1180px;
    }

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

    html { scroll-behavior: smooth; }

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

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

    a:focus-visible, button:focus-visible, input:focus-visible {
      outline: 3px solid rgba(230, 184, 76, .72);
      outline-offset: 3px;
    }

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

    button, input {
      font: inherit;
    }

    button {
      cursor: pointer;
      border: 0;
    }

    .container {
      width: min(var(--max), calc(100% - 48px));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(255, 253, 248, .94);
      border-bottom: 1px solid rgba(214, 209, 197, .9);
      backdrop-filter: blur(14px);
    }

    .nav-bar {
      min-height: 74px;
      display: flex;
      align-items: center;
      gap: 28px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 11px;
      min-width: max-content;
      font-size: 20px;
      font-weight: 800;
      letter-spacing: .02em;
    }

    .brand-mark {
      width: 32px;
      height: 32px;
      display: grid;
      place-items: center;
      color: var(--white);
      background: var(--green);
      border-radius: 9px 9px 9px 2px;
      font-size: 13px;
      font-weight: 900;
      box-shadow: 3px 3px 0 var(--yellow);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 7px;
      margin-right: auto;
    }

    .nav-links a {
      padding: 8px 15px;
      color: var(--muted);
      border-radius: 8px;
      font-size: 14px;
      font-weight: 700;
    }

    .nav-links a:hover,
    .nav-links a.active {
      color: var(--green-dark);
      background: #e9eee9;
    }

    .nav-status {
      display: flex;
      align-items: center;
      gap: 17px;
      color: var(--muted);
      font-size: 13px;
      white-space: nowrap;
    }

    .status-dot {
      display: inline-flex;
      align-items: center;
      gap: 7px;
    }

    .status-dot::before {
      content: "";
      width: 8px;
      height: 8px;
      display: inline-block;
      border-radius: 50%;
      background: #4d9a69;
      box-shadow: 0 0 0 4px rgba(77, 154, 105, .14);
    }

    .nav-action, .button {
      display: inline-flex;
      justify-content: center;
      align-items: center;
      gap: 9px;
      min-height: 44px;
      padding: 0 19px;
      border-radius: 9px;
      font-size: 14px;
      font-weight: 800;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
    }

    .nav-action {
      color: var(--white);
      background: var(--orange);
      box-shadow: 0 5px 0 #934225;
    }

    .nav-action:hover, .button:hover {
      transform: translateY(-2px);
    }

    .nav-action:active, .button:active {
      transform: translateY(1px);
    }

    .menu-toggle {
      display: none;
      width: 42px;
      height: 42px;
      color: var(--green-dark);
      background: transparent;
      border: 1px solid var(--line);
      border-radius: 8px;
      font-size: 20px;
    }

    .hero {
      position: relative;
      min-height: 590px;
      display: flex;
      align-items: center;
      overflow: hidden;
      color: var(--white);
      background:
        linear-gradient(90deg, rgba(15, 25, 25, .96) 0%, rgba(25, 44, 40, .89) 55%, rgba(25, 44, 40, .76) 100%),
        repeating-linear-gradient(135deg, rgba(255,255,255,.035) 0, rgba(255,255,255,.035) 1px, transparent 1px, transparent 12px),
        #172522;
    }

    .hero::after {
      content: "97";
      position: absolute;
      right: 5%;
      bottom: -95px;
      color: rgba(230, 184, 76, .1);
      font-size: clamp(220px, 34vw, 510px);
      font-weight: 900;
      line-height: 1;
      letter-spacing: -.12em;
      pointer-events: none;
    }

    .hero-inner {
      position: relative;
      z-index: 1;
      width: 100%;
      padding: 80px 0 74px;
    }

    .hero-kicker {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      padding: 6px 12px;
      color: #f8d77d;
      border: 1px solid rgba(230, 184, 76, .48);
      border-radius: 999px;
      font-size: 13px;
      font-weight: 800;
      letter-spacing: .06em;
    }

    .hero-kicker::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--yellow);
    }

    .hero h1 {
      max-width: 800px;
      margin: 22px 0 20px;
      color: var(--white);
      font-size: clamp(38px, 5.5vw, 68px);
      line-height: 1.15;
      letter-spacing: .01em;
    }

    .hero-lead {
      max-width: 670px;
      margin: 0;
      color: rgba(255, 253, 248, .8);
      font-size: 18px;
      line-height: 1.9;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 13px;
      margin-top: 32px;
    }

    .button-primary {
      color: var(--white);
      background: var(--orange);
      box-shadow: 0 6px 0 #913f24;
    }

    .button-secondary {
      color: var(--white);
      background: transparent;
      border: 1px solid rgba(255, 253, 248, .4);
    }

    .button-secondary:hover {
      background: rgba(255, 255, 255, .1);
      border-color: rgba(255, 255, 255, .75);
    }

    .hero-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 30px;
      margin-top: 48px;
      padding-top: 22px;
      border-top: 1px solid rgba(255,255,255,.18);
    }

    .hero-stat strong {
      display: block;
      color: var(--yellow);
      font-size: 25px;
      line-height: 1.2;
    }

    .hero-stat span {
      color: rgba(255,255,255,.62);
      font-size: 13px;
    }

    .notice-strip {
      background: var(--yellow);
      color: #362d17;
    }

    .notice-inner {
      min-height: 48px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      font-size: 14px;
      font-weight: 800;
    }

    .countdown {
      display: flex;
      align-items: center;
      gap: 8px;
      font-variant-numeric: tabular-nums;
    }

    .countdown b {
      display: inline-grid;
      min-width: 28px;
      min-height: 28px;
      place-items: center;
      color: var(--white);
      background: var(--green-dark);
      border-radius: 5px;
      font-size: 13px;
    }

    .section {
      padding: 104px 0;
    }

    .section-soft {
      background: #e9e5db;
    }

    .section-dark {
      color: var(--white);
      background: var(--green-dark);
    }

    .section-heading {
      max-width: 720px;
      margin-bottom: 45px;
    }

    .eyebrow {
      margin: 0 0 11px;
      color: var(--orange);
      font-size: 12px;
      font-weight: 900;
      letter-spacing: .13em;
    }

    .section-dark .eyebrow { color: var(--yellow); }

    h2 {
      margin: 0 0 13px;
      font-size: clamp(28px, 4vw, 43px);
      line-height: 1.25;
      letter-spacing: .01em;
    }

    .section-heading p {
      margin: 0;
      color: var(--muted);
      font-size: 16px;
    }

    .section-dark .section-heading p { color: rgba(255,255,255,.7); }

    .intro-layout {
      display: grid;
      grid-template-columns: 1fr 1.15fr;
      gap: 68px;
      align-items: start;
    }

    .intro-copy {
      padding-top: 10px;
    }

    .intro-copy p {
      margin: 0 0 22px;
      color: var(--muted);
      font-size: 17px;
    }

    .text-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--green);
      font-weight: 800;
    }

    .text-link:hover { color: var(--orange); }

    .feature-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 14px;
    }

    .feature-card {
      min-height: 188px;
      padding: 23px;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: var(--small-shadow);
      transition: transform .2s ease, box-shadow .2s ease;
    }

    .feature-card:nth-child(2) { transform: translateY(24px); }
    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow);
    }

    .feature-card:nth-child(2):hover { transform: translateY(20px); }

    .feature-icon {
      width: 38px;
      height: 38px;
      display: grid;
      place-items: center;
      margin-bottom: 16px;
      color: var(--green-dark);
      background: #e8eee8;
      border-radius: 9px;
      font-size: 19px;
      font-weight: 900;
    }

    .feature-card h3, .reward-card h3, .info-card h3 {
      margin: 0 0 7px;
      font-size: 18px;
      line-height: 1.4;
    }

    .feature-card p, .reward-card p, .info-card p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.7;
    }

    .reward-layout {
      display: grid;
      grid-template-columns: 1.25fr .75fr;
      gap: 20px;
    }

    .reward-card {
      position: relative;
      min-height: 250px;
      padding: 30px;
      overflow: hidden;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius);
    }

    .reward-card.featured {
      color: var(--white);
      background: var(--orange);
      border-color: var(--orange);
    }

    .reward-card.featured p { color: rgba(255,255,255,.82); }

    .reward-card.featured::after {
      content: "特别推荐";
      position: absolute;
      top: 22px;
      right: -30px;
      padding: 4px 35px;
      color: #3a2a14;
      background: var(--yellow);
      font-size: 11px;
      font-weight: 900;
      transform: rotate(35deg);
    }

    .reward-number {
      margin-bottom: 25px;
      color: var(--green);
      font-size: 45px;
      font-weight: 900;
      line-height: 1;
    }

    .featured .reward-number { color: var(--yellow); }

    .reward-list {
      display: grid;
      gap: 9px;
      margin: 21px 0 0;
      padding: 0;
      list-style: none;
      font-size: 14px;
    }

    .reward-list li {
      display: flex;
      gap: 9px;
      align-items: flex-start;
    }

    .reward-list li::before {
      content: "+";
      color: var(--orange);
      font-weight: 900;
    }

    .featured .reward-list li::before { color: var(--yellow); }

    .progress-layout {
      display: grid;
      grid-template-columns: .8fr 1.2fr;
      gap: 70px;
      align-items: center;
    }

    .progress-intro p {
      color: rgba(255,255,255,.72);
      margin: 0;
    }

    .progress-board {
      padding: 30px;
      background: rgba(255,255,255,.07);
      border: 1px solid rgba(255,255,255,.16);
      border-radius: var(--radius);
    }

    .progress-top {
      display: flex;
      justify-content: space-between;
      gap: 20px;
      margin-bottom: 17px;
      font-size: 14px;
      font-weight: 800;
    }

    .progress-top span:last-child { color: var(--yellow); }

    .progress-track {
      height: 10px;
      overflow: hidden;
      background: rgba(255,255,255,.13);
      border-radius: 10px;
    }

    .progress-track span {
      display: block;
      width: 68%;
      height: 100%;
      background: var(--yellow);
      border-radius: inherit;
    }

    .steps {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
      margin-top: 27px;
    }

    .step {
      padding: 16px;
      border-top: 1px solid rgba(255,255,255,.24);
    }

    .step b {
      display: block;
      margin-bottom: 6px;
      color: var(--yellow);
      font-size: 22px;
    }

    .step span {
      color: rgba(255,255,255,.68);
      font-size: 13px;
    }

    .info-layout {
      display: grid;
      grid-template-columns: 1.25fr .75fr;
      gap: 25px;
      align-items: start;
    }

    .info-list {
      display: grid;
      gap: 0;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      overflow: hidden;
    }

    .info-item {
      display: grid;
      grid-template-columns: 108px 1fr auto;
      gap: 20px;
      align-items: center;
      padding: 21px 24px;
      border-bottom: 1px solid var(--line);
    }

    .info-item:last-child { border-bottom: 0; }

    .info-date {
      color: var(--orange);
      font-size: 13px;
      font-weight: 900;
    }

    .info-item h3 {
      margin-bottom: 4px;
      font-size: 16px;
    }

    .info-item p {
      font-size: 13px;
    }

    .info-arrow {
      color: var(--green);
      font-size: 20px;
    }

    .recommend-box {
      padding: 27px;
      color: var(--white);
      background: var(--green);
      border-radius: var(--radius);
      box-shadow: var(--small-shadow);
    }

    .recommend-box h3 {
      margin: 0 0 11px;
      font-size: 21px;
    }

    .recommend-box p {
      margin: 0 0 21px;
      color: rgba(255,255,255,.76);
      font-size: 14px;
    }

    .recommend-box .button {
      color: var(--green-dark);
      background: var(--yellow);
    }

    .faq-section {
      padding-top: 84px;
    }

    .faq-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px 42px;
    }

    .faq-item {
      padding: 20px 0;
      border-top: 1px solid var(--line);
    }

    .faq-item summary {
      position: relative;
      padding-right: 28px;
      cursor: pointer;
      list-style: none;
      font-weight: 800;
    }

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

    .faq-item summary::after {
      content: "+";
      position: absolute;
      right: 0;
      color: var(--orange);
      font-size: 22px;
      font-weight: 400;
      line-height: 1;
    }

    .faq-item[open] summary::after { content: "−"; }

    .faq-item p {
      margin: 13px 0 0;
      color: var(--muted);
      font-size: 14px;
    }

    .join-section {
      padding: 88px 0;
      background: var(--orange);
      color: var(--white);
    }

    .join-layout {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 35px;
    }

    .join-layout h2 {
      max-width: 660px;
      margin-bottom: 10px;
    }

    .join-layout p {
      max-width: 650px;
      margin: 0;
      color: rgba(255,255,255,.8);
    }

    .join-layout .button {
      flex: 0 0 auto;
      color: var(--ink);
      background: var(--yellow);
      box-shadow: 0 5px 0 #a77a24;
    }

    .site-footer {
      padding: 48px 0 27px;
      color: rgba(255,255,255,.7);
      background: #121a19;
    }

    .footer-main {
      display: flex;
      justify-content: space-between;
      gap: 40px;
      padding-bottom: 36px;
      border-bottom: 1px solid rgba(255,255,255,.14);
    }

    .footer-brand {
      color: var(--white);
      font-size: 20px;
      font-weight: 800;
    }

    .footer-brand p {
      max-width: 360px;
      margin: 11px 0 0;
      color: rgba(255,255,255,.55);
      font-size: 13px;
      line-height: 1.8;
    }

    .footer-links {
      display: flex;
      gap: 26px;
      align-items: flex-start;
      font-size: 13px;
    }

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

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 20px;
      padding-top: 21px;
      color: rgba(255,255,255,.42);
      font-size: 12px;
    }

    @media (max-width: 1024px) {
      .hero { min-height: 550px; }
      .intro-layout, .progress-layout { gap: 40px; }
      .section { padding: 82px 0; }
    }

    @media (max-width: 768px) {
      .container { width: min(var(--max), calc(100% - 34px)); }
      .nav-bar { min-height: 66px; gap: 14px; }
      .menu-toggle { display: block; margin-left: auto; }
      .nav-links {
        position: absolute;
        top: 66px;
        left: 0;
        right: 0;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        padding: 12px 17px 17px;
        background: var(--white);
        border-bottom: 1px solid var(--line);
        box-shadow: var(--small-shadow);
      }
      .nav-links.open { display: flex; }
      .nav-links a { padding: 11px 14px; }
      .nav-status { display: none; }
      .nav-action { display: none; }
      .hero-inner { padding: 70px 0 58px; }
      .hero h1 { font-size: clamp(35px, 9vw, 52px); }
      .hero-lead { font-size: 16px; line-height: 1.8; }
      .hero-meta { gap: 22px; margin-top: 38px; }
      .notice-inner { align-items: flex-start; flex-direction: column; gap: 5px; padding: 10px 0; }
      .intro-layout, .reward-layout, .progress-layout, .info-layout { grid-template-columns: 1fr; }
      .intro-layout { gap: 35px; }
      .feature-card:nth-child(2), .feature-card:nth-child(2):hover { transform: none; }
      .progress-layout { gap: 30px; }
      .faq-grid { grid-template-columns: 1fr; gap: 0; }
      .join-layout { align-items: flex-start; flex-direction: column; }
      .footer-main, .footer-bottom { flex-direction: column; gap: 20px; }
      .footer-links { flex-wrap: wrap; }
    }

    @media (max-width: 520px) {
      .brand { font-size: 17px; }
      .brand-mark { width: 29px; height: 29px; }
      .hero { min-height: 590px; }
      .hero-actions { flex-direction: column; align-items: stretch; }
      .hero-actions .button { width: 100%; }
      .hero-meta { display: grid; grid-template-columns: 1fr 1fr; gap: 19px 12px; }
      .feature-grid, .steps { grid-template-columns: 1fr; }
      .feature-card { min-height: auto; }
      .reward-card { min-height: auto; padding: 24px; }
      .info-item { grid-template-columns: 78px 1fr auto; gap: 10px; padding: 18px 15px; }
      .info-item p { display: none; }
      .info-date { font-size: 12px; }
      .section { padding: 67px 0; }
      h2 { font-size: 29px; }
    }