/* roulang page: index */
:root {
  --bg-deep: #0b0d12;
  --bg-body: #11151b;
  --bg-card: #171c24;
  --border: #232a35;
  --text-main: #f3f5f7;
  --text-sub: #aab3bf;
  --text-weak: #6f7a88;
  --primary: #2fd4a0;
  --primary-glow: rgba(47,212,160,.35);
  --accent: #f2b56b;
  --accent-glow: rgba(242,181,107,.3);
  --radius-card: 12px;
  --radius-pill: 999px;
  --radius-badge: 6px;
  --header-height: 64px;
  --container-w: 1200px;
  --space-section: 96px;
  --font-stack: "PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-stack);
  font-size: 15px;
  line-height: 1.75;
  background: var(--bg-body);
  color: var(--text-main);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  padding-bottom: 84px;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .25s; }
a:hover { color: var(--primary); }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input { font-family: inherit; }

.container { max-width: var(--container-w); margin: 0 auto; padding-left: 24px; padding-right: 24px; }

/* ========= Header / Nav ========= */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-height);
  background: rgba(11,13,18,.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(35,42,53,.6);
  z-index: 1000;
}
.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  font-size: 20px;
  font-weight: 900;
  letter-spacing: .3px;
  white-space: nowrap;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo .dot {
  width: 8px; height: 8px;
  background: var(--primary);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--primary-glow);
  flex-shrink: 0;
}
.nav-menu { display: flex; align-items: center; gap: 30px; }
.nav-menu a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-sub);
  padding: 8px 4px;
  position: relative;
  transition: color .25s;
  white-space: nowrap;
}
.nav-menu a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  box-shadow: 0 0 10px var(--primary-glow);
  transform: scaleX(0);
  transition: transform .3s;
}
.nav-menu a:hover, .nav-menu a.active { color: var(--text-main); }
.nav-menu a:hover::after, .nav-menu a.active::after { transform: scaleX(1); }
.nav-cta {
  background: var(--accent);
  color: var(--bg-deep);
  padding: 10px 24px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 14px;
  transition: box-shadow .3s, transform .2s;
  white-space: nowrap;
}
.nav-cta:hover {
  box-shadow: 0 0 22px var(--accent-glow);
  transform: translateY(-1px);
  color: var(--bg-deep);
}
.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  border-radius: 8px;
  border: 1px solid var(--border);
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--text-main);
  transition: border-color .25s;
}
.nav-toggle:hover { border-color: var(--primary); }

/* ========= Hero ========= */
.hero {
  position: relative;
  min-height: 640px;
  display: flex;
  align-items: center;
  padding: calc(var(--header-height) + 64px) 0 64px;
  background: linear-gradient(rgba(11,13,18,.72), rgba(11,13,18,.88)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  top: -120px; right: -120px;
  width: 420px; height: 420px;
  background: radial-gradient(circle, var(--primary-glow), transparent 70%);
  pointer-events: none;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 56px;
  width: 100%;
  align-items: center;
  position: relative;
  z-index: 2;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(47,212,160,.12);
  border: 1px solid rgba(47,212,160,.3);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 20px;
}
.hero-badge i { width: 6px; height: 6px; background: var(--primary); border-radius: 50%; display: inline-block; box-shadow: 0 0 8px var(--primary-glow); }
.hero h1 {
  font-size: 42px;
  line-height: 1.3;
  font-weight: 900;
  margin-bottom: 18px;
  letter-spacing: .5px;
}
.hero h1 .highlight { color: var(--primary); }
.hero-sub {
  font-size: 17px;
  color: var(--text-sub);
  margin-bottom: 30px;
  max-width: 520px;
  line-height: 1.75;
}
.hero-ctas { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 36px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 32px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 15px;
  transition: box-shadow .3s, transform .2s, background .2s, border-color .2s;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--primary);
  color: var(--bg-deep);
}
.btn-primary:hover {
  box-shadow: 0 0 28px var(--primary-glow);
  transform: translateY(-2px);
  color: var(--bg-deep);
}
.btn-outline {
  background: transparent;
  border-color: var(--border);
  color: var(--text-main);
}
.btn-outline:hover {
  border-color: var(--primary);
  box-shadow: 0 0 18px rgba(47,212,160,.15);
  color: var(--primary);
}
.btn-accent {
  background: var(--accent);
  color: var(--bg-deep);
}
.btn-accent:hover {
  box-shadow: 0 0 26px var(--accent-glow);
  transform: translateY(-2px);
  color: var(--bg-deep);
}
.btn:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }
.hero-stats { display: flex; flex-wrap: wrap; gap: 28px; }
.hero-stats .stat { display: flex; flex-direction: column; }
.hero-stats .num {
  font-size: 26px;
  font-weight: 800;
  color: var(--text-main);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}
.hero-stats .lbl { font-size: 13px; color: var(--text-weak); }
.hero-card {
  background: rgba(23,28,36,.72);
  border: 1px solid rgba(35,42,53,.85);
  border-radius: 16px;
  padding: 20px;
  backdrop-filter: blur(12px);
  box-shadow: 0 8px 40px rgba(0,0,0,.35);
  position: relative;
}
.hero-card .cover-wrap { border-radius: 12px; overflow: hidden; position: relative; margin-bottom: 16px; }
.hero-card .cover-wrap img { width: 100%; height: 220px; object-fit: cover; transition: transform .5s; }
.hero-card .cover-wrap:hover img { transform: scale(1.04); }
.hero-card .hot-chip {
  position: absolute;
  top: 12px; right: 12px;
  background: rgba(242,181,107,.9);
  color: #1a1208;
  font-size: 12px;
  font-weight: 800;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  box-shadow: 0 2px 12px rgba(0,0,0,.3);
}
.hero-card .card-list { display: flex; flex-direction: column; gap: 10px; }
.hero-card .card-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 10px;
  background: rgba(17,21,27,.6);
  border-radius: 8px;
  border: 1px solid transparent;
  transition: border-color .25s, background .25s;
}
.hero-card .card-item:hover { border-color: rgba(47,212,160,.3); background: rgba(47,212,160,.05); }
.hero-card .card-item .tag {
  flex-shrink: 0;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(47,212,160,.15);
  color: var(--primary);
}
.hero-card .card-item .txt { font-size: 13px; color: var(--text-sub); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.hero-card .card-item .meta { font-size: 12px; color: var(--text-weak); flex-shrink: 0; }
.hero-card .people-chip {
  position: absolute;
  bottom: 20px; left: 20px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  background: rgba(11,13,18,.6);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(47,212,160,.25);
}

/* ========= Section 通用 ========= */
.section { padding: var(--space-section) 0; position: relative; }
.section-head { margin-bottom: 48px; max-width: 640px; }
.section-head .sec-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-head h2 {
  font-size: 32px;
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: 12px;
  letter-spacing: .3px;
}
.section-head p { color: var(--text-sub); font-size: 15px; line-height: 1.75; }
.section-alt { background: var(--bg-deep); }

/* ========= 卖点三连 ========= */
.features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 28px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 36px 30px;
  position: relative;
  transition: border-color .3s, box-shadow .3s, transform .3s;
  overflow: hidden;
}
.feature-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 3px; height: 64px;
  background: var(--primary);
  box-shadow: 0 0 14px var(--primary-glow);
  transition: height .3s;
}
.feature-card:hover { border-color: rgba(47,212,160,.4); box-shadow: 0 4px 30px rgba(0,0,0,.3); transform: translateY(-4px); }
.feature-card:hover::before { height: 100%; }
.feature-num {
  font-size: 28px;
  font-weight: 900;
  color: transparent;
  -webkit-text-stroke: 1px var(--primary);
  margin-bottom: 18px;
  font-variant-numeric: tabular-nums;
}
.feature-card h3 { font-size: 19px; font-weight: 800; margin-bottom: 12px; }
.feature-card p { color: var(--text-sub); font-size: 14px; line-height: 1.7; }

/* ========= 场景演示 ========= */
.steps-wrap { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; position: relative; }
.steps-wrap::before {
  content: "";
  position: absolute;
  top: 120px; left: 15%; right: 15%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: .3;
  z-index: 0;
}
.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 0;
  position: relative;
  z-index: 1;
  transition: border-color .3s, box-shadow .3s;
  overflow: hidden;
}
.step-card:hover { border-color: rgba(47,212,160,.4); box-shadow: 0 0 30px rgba(47,212,160,.1); }
.step-cover { position: relative; height: 180px; overflow: hidden; }
.step-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.step-card:hover .step-cover img { transform: scale(1.05); }
.step-cover .chip {
  position: absolute;
  bottom: 10px; left: 10px;
  background: rgba(11,13,18,.75);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(47,212,160,.3);
}
.step-body { padding: 22px 24px 28px; }
.step-label {
  font-size: 12px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 1px;
  margin-bottom: 6px;
}
.step-body h3 { font-size: 18px; font-weight: 800; margin-bottom: 8px; }
.step-body p { color: var(--text-sub); font-size: 14px; line-height: 1.7; }

/* ========= 热门帖子 封面卡流 ========= */
.posts-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.post-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: border-color .3s, box-shadow .3s, transform .3s;
}
.post-card:hover { border-color: rgba(47,212,160,.4); box-shadow: 0 6px 30px rgba(0,0,0,.35); transform: translateY(-4px); }
.post-cover { position: relative; height: 150px; overflow: hidden; }
.post-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.post-card:hover .post-cover img { transform: scale(1.06); }
.post-hot {
  position: absolute;
  top: 10px; right: 10px;
  background: rgba(11,13,18,.78);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(242,181,107,.3);
  backdrop-filter: blur(4px);
}
.post-body { padding: 16px 16px 20px; }
.post-author { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.avatar {
  width: 26px; height: 26px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #1a8f6d);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700; color: var(--bg-deep);
  flex-shrink: 0;
}
.avatar.b { background: linear-gradient(135deg, var(--accent), #c98a3d); }
.avatar.c { background: linear-gradient(135deg, #7b6cd6, #4a3f8f); }
.post-author .nick { font-size: 13px; font-weight: 600; color: var(--text-main); }
.post-author .time { font-size: 12px; color: var(--text-weak); margin-left: auto; }
.post-body h3 { font-size: 15px; font-weight: 700; line-height: 1.5; margin-bottom: 10px; }
.post-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.post-tags span {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-sub);
  background: rgba(35,42,53,.6);
  padding: 2px 8px;
  border-radius: var(--radius-badge);
  transition: color .2s, background .2s;
}
.post-tags span:hover { color: var(--primary); background: rgba(47,212,160,.1); }

/* ========= 新手任务 ========= */
.task-wrap {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 48px;
  align-items: center;
}
.task-list { display: flex; flex-direction: column; gap: 0; }
.task-item {
  display: flex;
  gap: 18px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  position: relative;
}
.task-item:last-child { border-bottom: none; }
.task-num {
  width: 38px; height: 38px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800;
  font-size: 16px;
  background: rgba(47,212,160,.1);
  color: var(--primary);
  border: 1px solid rgba(47,212,160,.3);
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
}
.task-item.done .task-num { background: var(--primary); color: var(--bg-deep); }
.task-item h3 { font-size: 17px; font-weight: 700; margin-bottom: 4px; }
.task-item p { font-size: 14px; color: var(--text-sub); }
.task-status {
  margin-left: auto;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
  white-space: nowrap;
  align-self: center;
  background: rgba(242,181,107,.08);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(242,181,107,.2);
}
.task-progress-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 34px;
}
.task-progress-card .prog-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}
.task-progress-card .prog-head h3 { font-size: 18px; font-weight: 800; }
.task-progress-card .prog-head .pct { font-size: 26px; font-weight: 900; color: var(--primary); font-variant-numeric: tabular-nums; }
.progress-bar {
  height: 8px;
  background: rgba(35,42,53,.8);
  border-radius: var(--radius-pill);
  overflow: hidden;
  margin-bottom: 24px;
}
.progress-bar .fill {
  height: 100%;
  width: 75%;
  background: linear-gradient(90deg, var(--primary), #7ef0cf);
  border-radius: var(--radius-pill);
  box-shadow: 0 0 14px var(--primary-glow);
  transition: width .6s ease;
}
.prog-desc { color: var(--text-sub); font-size: 14px; line-height: 1.7; }
.prog-reward {
  margin-top: 20px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(242,181,107,.08);
  border: 1px solid rgba(242,181,107,.2);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
}

/* ========= 社会认同 ========= */
.social-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 48px; }
.comment-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 26px;
  transition: border-color .3s, box-shadow .3s;
}
.comment-card:hover { border-color: rgba(47,212,160,.3); box-shadow: 0 0 22px rgba(47,212,160,.06); }
.comment-card .stars { color: var(--accent); font-size: 13px; letter-spacing: 2px; margin-bottom: 14px; }
.comment-card blockquote {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.75;
  font-style: normal;
  margin-bottom: 20px;
  border-left: 2px solid var(--primary);
  padding-left: 14px;
}
.comment-card .c-author { display: flex; align-items: center; gap: 10px; }
.comment-card .c-author .nick { font-size: 14px; font-weight: 700; }
.comment-card .c-author .role { font-size: 12px; color: var(--text-weak); }

.data-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  text-align: center;
}
.data-strip .d-num {
  font-size: 34px;
  font-weight: 900;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}
.data-strip .d-lbl { font-size: 13px; color: var(--text-sub); margin-top: 6px; }

/* ========= 资讯区 ========= */
.news-grid { display: grid; grid-template-columns: 1.4fr .6fr; gap: 40px; align-items: start; }
.news-list { display: flex; flex-direction: column; }
.news-item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 16px;
  border-bottom: 1px solid var(--border);
  transition: background .25s;
  border-radius: 8px;
}
.news-item:hover { background: rgba(47,212,160,.04); }
.news-item .n-date {
  flex-shrink: 0;
  font-size: 13px;
  color: var(--text-weak);
  font-variant-numeric: tabular-nums;
  width: 48px;
}
.news-item h3 {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  flex: 1;
  transition: color .25s;
}
.news-item:hover h3 { color: var(--primary); }
.news-item .n-tag {
  flex-shrink: 0;
  font-size: 11px;
  font-weight: 700;
  color: var(--primary);
  background: rgba(47,212,160,.1);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
}
.side-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 24px;
}
.side-panel h3 {
  font-size: 17px;
  font-weight: 800;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
  position: relative;
}
.side-panel h3::after {
  content: "";
  position: absolute;
  left: 0; bottom: -1px;
  width: 36px; height: 2px;
  background: var(--primary);
  box-shadow: 0 0 10px var(--primary-glow);
}
.rank-list li {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding: 12px 8px;
  border-radius: 6px;
  transition: background .25s;
}
.rank-list li:hover { background: rgba(47,212,160,.04); }
.rank-list .r-num {
  font-size: 22px;
  font-weight: 900;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  min-width: 28px;
}
.rank-list .r-txt {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.5;
}
.rank-list .r-txt span { display: block; font-size: 12px; color: var(--text-weak); margin-top: 2px; }

/* ========= FAQ ========= */
.faq-list { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: border-color .25s, box-shadow .25s;
}
.faq-item:hover { border-color: rgba(47,212,160,.3); }
.faq-item summary {
  padding: 22px 26px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  position: relative;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color .25s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 22px;
  font-weight: 400;
  color: var(--primary);
  transition: transform .3s;
  flex-shrink: 0;
  margin-left: 16px;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item[open] { border-color: rgba(47,212,160,.35); box-shadow: 0 0 24px rgba(47,212,160,.05); }
.faq-item[open] summary { color: var(--primary); }
.faq-item .faq-a {
  padding: 0 26px 22px;
  color: var(--text-sub);
  font-size: 14px;
  line-height: 1.75;
  border-left: 2px solid rgba(47,212,160,.3);
  margin: 0 26px 18px;
}

/* ========= 收尾 CTA ========= */
.cta-section {
  position: relative;
  background: linear-gradient(rgba(11,13,18,.82), rgba(11,13,18,.9)), url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
  text-align: center;
  padding: 96px 0;
}
.cta-section h2 {
  font-size: 36px;
  font-weight: 900;
  margin-bottom: 16px;
}
.cta-section p {
  color: var(--text-sub);
  font-size: 16px;
  max-width: 520px;
  margin: 0 auto 36px;
  line-height: 1.75;
}
.cta-btns { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ========= Footer ========= */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
  padding: 72px 0 48px;
}
.footer-grid { display: grid; grid-template-columns: 1.2fr .8fr .8fr; gap: 48px; }
.footer-grid h3 {
  font-size: 16px;
  font-weight: 800;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}
.footer-grid h3::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 24px; height: 2px;
  background: var(--primary);
}
.footer-brand .logo { margin-bottom: 14px; font-size: 19px; }
.footer-brand p { color: var(--text-weak); font-size: 13px; line-height: 1.8; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: var(--text-sub); font-size: 14px; }
.footer-links a:hover { color: var(--primary); }
.footer-contact p { color: var(--text-sub); font-size: 14px; margin-bottom: 8px; }
.footer-bottom {
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 13px;
  color: var(--text-weak);
}
.footer-bottom a { color: var(--text-weak); }
.footer-bottom a:hover { color: var(--primary); }

/* ========= 底部固定转化条 ========= */
.fixed-bar {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 999;
  background: rgba(11,13,18,.88);
  backdrop-filter: blur(16px);
  border-top: 1px solid rgba(47,212,160,.15);
  padding: 14px 24px;
}
.fixed-bar-inner {
  max-width: var(--container-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.fixed-bar .fb-txt {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
}
.fixed-bar .fb-txt span { color: var(--primary); }
.fixed-bar .btn { padding: 10px 24px; font-size: 14px; }
.fixed-bar .btn:focus-visible { outline-color: var(--accent); }

/* ========= 响应式 ========= */
@media (max-width: 1024px) {
  :root { --space-section: 80px; }
  .hero h1 { font-size: 36px; }
  .posts-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: 1fr 1fr; }
  .steps-wrap { grid-template-columns: 1fr; gap: 20px; }
  .steps-wrap::before { display: none; }
  .news-grid { grid-template-columns: 1fr; }
  .data-strip { grid-template-columns: repeat(2, 1fr); }
  .social-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  :root { --space-section: 64px; }
  .site-header { backdrop-filter: blur(8px); }
  .nav-toggle { display: flex; }
  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0; right: 0;
    background: rgba(11,13,18,.98);
    flex-direction: column;
    align-items: flex-start;
    padding: 24px;
    gap: 6px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-16px);
    opacity: 0;
    visibility: hidden;
    transition: all .3s ease;
    box-shadow: 0 20px 40px rgba(0,0,0,.5);
  }
  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .nav-menu a { font-size: 17px; padding: 12px 8px; width: 100%; }
  .nav-menu a::after { display: none; }
  .nav-cta { margin-top: 12px; width: 100%; text-align: center; }
  .hero { min-height: auto; padding: calc(var(--header-height) + 40px) 0 56px; }
  .hero-inner { grid-template-columns: 1fr; gap: 36px; }
  .hero h1 { font-size: 30px; }
  .hero-sub { font-size: 15px; }
  .features-grid { grid-template-columns: 1fr; }
  .social-grid { grid-template-columns: 1fr; }
  .news-item { flex-wrap: wrap; gap: 8px; }
  .news-item .n-date { width: auto; }
  .news-item h3 { flex-basis: 100%; order: 3; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .task-wrap { grid-template-columns: 1fr; gap: 32px; }
  .cta-section h2 { font-size: 28px; }
  .fixed-bar .fb-txt { display: none; }
  .fixed-bar-inner { justify-content: center; }
  .step-card { margin-bottom: 0; }
  .section-head h2 { font-size: 26px; }
}
@media (max-width: 520px) {
  .container { padding-left: 16px; padding-right: 16px; }
  .posts-grid { grid-template-columns: 1fr; }
  .data-strip { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-ctas .btn { width: 100%; }
  .cta-btns .btn { width: 100%; }
  .hero-stats { gap: 16px; }
  .hero-stats .stat { flex-direction: row; align-items: baseline; gap: 6px; }
  .hero h1 { font-size: 26px; }
  .section-head h2 { font-size: 24px; }
  .post-cover { height: 190px; }
  .nav-menu a { font-size: 16px; }
  .logo { font-size: 17px; }
  .nav-cta { font-size: 13px; padding: 8px 16px; }
}