/* ============================================================
   DNF辅助下载站 · 全站公共样式
   配色：深邃暗夜蓝 + 鎏金 + 电光蓝
   ============================================================ */

:root {
  --bg: #0b0e17;
  --bg-2: #0f1320;
  --bg-3: #141929;
  --card: rgba(255, 255, 255, 0.035);
  --card-hover: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text: #e8edf5;
  --text-2: #b6c1d4;
  --muted: #8a97ab;
  --gold: #f0b13b;
  --gold-2: #ffcf6e;
  --gold-deep: #c98a17;
  --blue: #58a9ff;
  --blue-2: #7cc0ff;
  --green: #3ddc97;
  --red: #ff6b6b;
  --purple: #a78bfa;
  --radius: 14px;
  --radius-sm: 9px;
  --radius-lg: 22px;
  --shadow: 0 18px 50px -18px rgba(0, 0, 0, 0.65);
  --shadow-gold: 0 12px 36px -12px rgba(240, 177, 59, 0.45);
  --container: 1180px;
  --header-h: 68px;
}

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

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 背景装饰：网格 + 光晕 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(900px 500px at 85% -10%, rgba(88, 169, 255, 0.08), transparent 60%),
    radial-gradient(800px 480px at 5% 0%, rgba(240, 177, 59, 0.07), transparent 55%);
  pointer-events: none;
  z-index: 0;
}

img { max-width: 100%; display: block; }
a { color: var(--blue-2); text-decoration: none; transition: color .2s; }
a:hover { color: var(--gold-2); }
ul, ol { list-style: none; }

.container { width: min(var(--container), calc(100% - 40px)); margin: 0 auto; position: relative; z-index: 1; }

/* ---------------- 通用标题区 ---------------- */
.section { padding: 84px 0; position: relative; z-index: 1; }
.section.tight { padding: 60px 0; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 52px; }
.section-head .eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 3px;
  color: var(--gold);
  background: rgba(240, 177, 59, 0.1);
  border: 1px solid rgba(240, 177, 59, 0.28);
  padding: 5px 16px;
  border-radius: 999px;
  margin-bottom: 18px;
}
.section-head h2 {
  font-size: 32px;
  line-height: 1.3;
  font-weight: 700;
  letter-spacing: .5px;
}
.section-head h2 .hl { color: var(--gold); }
.section-head p { color: var(--muted); margin-top: 14px; font-size: 15.5px; }

.text-gold { color: var(--gold); }
.text-blue { color: var(--blue-2); }
.text-green { color: var(--green); }

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform .2s, box-shadow .2s, background .2s, border-color .2s;
  white-space: nowrap;
  line-height: 1.2;
}
.btn-primary {
  background: linear-gradient(135deg, var(--gold-2), var(--gold) 55%, var(--gold-deep));
  color: #1a1305;
  box-shadow: var(--shadow-gold);
}
.btn-primary:hover { color: #1a1305; transform: translateY(-2px); box-shadow: 0 16px 42px -12px rgba(240, 177, 59, 0.6); }
.btn-ghost {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  border-color: var(--border-strong);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.1); color: #fff; transform: translateY(-2px); }
.btn-blue {
  background: linear-gradient(135deg, var(--blue-2), var(--blue));
  color: #08131f;
}
.btn-blue:hover { color: #08131f; transform: translateY(-2px); }
.btn-sm { padding: 9px 20px; font-size: 14px; }
.btn-block { width: 100%; }
.btn .svg-icon { width: 17px; height: 17px; }

/* ---------------- 头部导航 ---------------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  z-index: 100;
  background: rgba(11, 14, 23, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  transition: background .3s, box-shadow .3s;
}
.site-header.scrolled { background: rgba(11, 14, 23, 0.92); box-shadow: 0 10px 30px -12px rgba(0,0,0,.7); }
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); gap: 20px; }

.logo { display: flex; align-items: center; gap: 10px; font-size: 19px; font-weight: 800; color: var(--text); letter-spacing: .5px; }
.logo:hover { color: var(--text); }
.logo-mark {
  width: 38px; height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--gold-2), var(--gold-deep));
  display: grid; place-items: center;
  color: #161004;
  box-shadow: 0 6px 18px -6px rgba(240,177,59,.6);
  flex: none;
}
.logo-mark svg { width: 22px; height: 22px; }
.logo em { font-style: normal; color: var(--gold); font-size: 13px; font-weight: 600; display: block; letter-spacing: 2px; margin-top: -3px; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  color: var(--text-2);
  font-size: 14.5px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 8px;
  position: relative;
}
.nav a:hover { color: #fff; background: rgba(255,255,255,.06); }
.nav a.active { color: var(--gold-2); }
.nav a.active::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 1px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--gold), transparent);
}

.nav-actions { display: flex; align-items: center; gap: 12px; }
.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  background: rgba(255,255,255,.05);
  border: 1px solid var(--border);
  border-radius: 9px;
  color: var(--text);
  cursor: pointer;
}
.nav-toggle svg { width: 20px; height: 20px; margin: auto; }

/* ---------------- 首页 Hero ---------------- */
.hero {
  position: relative;
  padding: calc(var(--header-h) + 70px) 0 76px;
  overflow: hidden;
  z-index: 1;
}
.hero-bg {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(180deg, rgba(11,14,23,.72) 0%, rgba(11,14,23,.88) 62%, var(--bg) 100%),
    linear-gradient(90deg, rgba(11,14,23,.92) 0%, rgba(11,14,23,.55) 55%, rgba(11,14,23,.25) 100%),
    url("https://trae-api-cn.mchost.guru/api/ide/v1/text_to_image?prompt=Dark%20fantasy%20dungeon%20and%20fighter%20online%20game%20key%20art%2C%20armored%20warrior%20with%20glowing%20golden%20greatsword%20standing%20in%20demonic%20dungeon%2C%20blue%20magical%20energy%2C%20embers%20and%20gold%20particles%20floating%2C%20epic%20cinematic%20lighting%2C%20deep%20navy%20background%2C%20ultra%20detailed%20digital%20painting%2C%20no%20text%20no%20logo%20no%20watermark&image_size=landscape_16_9");
  background-size: cover;
  background-position: center 30%;
  z-index: 0;
}
.hero-bg::after {
  content: "";
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 75%);
}
.hero-inner { position: relative; z-index: 2; max-width: 820px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 9px;
  background: rgba(240,177,59,.1);
  border: 1px solid rgba(240,177,59,.35);
  color: var(--gold-2);
  font-size: 13.5px; font-weight: 500;
  padding: 7px 16px;
  border-radius: 999px;
  margin-bottom: 26px;
}
.hero-badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px rgba(61,220,151,.18); animation: pulse 1.8s infinite; }
@keyframes pulse { 0%,100%{ opacity:1 } 50%{ opacity:.45 } }

.hero h1 {
  font-size: clamp(30px, 4.6vw, 48px);
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: 1px;
}
.hero h1 .grad-gold {
  background: linear-gradient(120deg, var(--gold-2), var(--gold) 45%, #e09b22);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub { margin-top: 20px; font-size: 16.5px; color: var(--text-2); max-width: 660px; }
.hero-cta { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 14px; }
.hero-meta { margin-top: 30px; display: flex; flex-wrap: wrap; gap: 10px 26px; color: var(--muted); font-size: 14px; }
.hero-meta span { display: inline-flex; align-items: center; gap: 8px; }
.hero-meta svg { width: 16px; height: 16px; color: var(--gold); }

/* Hero 下四张亮点卡 */
.hero-points {
  position: relative; z-index: 2;
  margin-top: 58px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.point-card {
  background: linear-gradient(160deg, rgba(255,255,255,.07), rgba(255,255,255,.025));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 20px;
  backdrop-filter: blur(8px);
  transition: transform .25s, border-color .25s;
}
.point-card:hover { transform: translateY(-5px); border-color: rgba(240,177,59,.4); }
.point-card .ic { width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center; margin-bottom: 14px;
  background: rgba(240,177,59,.12); color: var(--gold); border: 1px solid rgba(240,177,59,.25); }
.point-card .ic svg { width: 22px; height: 22px; }
.point-card h3 { font-size: 16px; margin-bottom: 6px; }
.point-card p { font-size: 13.5px; color: var(--muted); line-height: 1.7; }

/* ---------------- 数据统计 ---------------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.stat-card {
  text-align: center;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 34px 18px;
}
.stat-num {
  font-size: 40px; font-weight: 800;
  background: linear-gradient(120deg, var(--gold-2), var(--gold));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  line-height: 1.1;
}
.stat-num small { font-size: 22px; }
.stat-label { color: var(--muted); font-size: 14px; margin-top: 8px; letter-spacing: 1px; }

/* ---------------- 卡片网格（功能） ---------------- */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 26px;
  transition: transform .28s, border-color .28s, background .28s, box-shadow .28s;
  overflow: hidden;
}
.feature-card::before {
  content: "";
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--gold), transparent 70%);
  opacity: 0; transition: opacity .28s;
}
.feature-card:hover { transform: translateY(-6px); border-color: rgba(240,177,59,.38); background: var(--card-hover); box-shadow: var(--shadow); }
.feature-card:hover::before { opacity: 1; }
.feature-card .ic {
  width: 50px; height: 50px; border-radius: 13px;
  display: grid; place-items: center;
  background: linear-gradient(145deg, rgba(240,177,59,.16), rgba(240,177,59,.05));
  border: 1px solid rgba(240,177,59,.28);
  color: var(--gold);
  margin-bottom: 18px;
}
.feature-card .ic svg { width: 25px; height: 25px; }
.feature-card h3 { font-size: 17.5px; margin-bottom: 10px; }
.feature-card p { color: var(--muted); font-size: 14px; }
.feature-card .tag-new {
  position: absolute; top: 18px; right: 18px;
  font-size: 11px; font-weight: 700;
  color: #06281a; background: var(--green);
  padding: 2px 9px; border-radius: 999px; letter-spacing: 1px;
}
.feature-card ul.dot-list { margin-top: 12px; }
.feature-card ul.dot-list li {
  position: relative; padding-left: 18px; font-size: 13.5px; color: var(--text-2); margin: 7px 0;
}
.feature-card ul.dot-list li::before {
  content: ""; position: absolute; left: 2px; top: 9px;
  width: 6px; height: 6px; border-radius: 50%; background: var(--gold);
}

/* ---------------- 为什么选择我们 ---------------- */
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.why-card {
  text-align: center;
  padding: 36px 24px;
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.02));
  border: 1px solid var(--border);
  transition: transform .25s, border-color .25s;
}
.why-card:hover { transform: translateY(-5px); border-color: rgba(88,169,255,.4); }
.why-card .ic {
  width: 58px; height: 58px; margin: 0 auto 18px;
  border-radius: 50%;
  display: grid; place-items: center;
  background: rgba(88,169,255,.1);
  border: 1px solid rgba(88,169,255,.3);
  color: var(--blue-2);
}
.why-card .ic svg { width: 27px; height: 27px; }
.why-card h3 { font-size: 17px; margin-bottom: 10px; }
.why-card p { font-size: 13.5px; color: var(--muted); }

/* ---------------- 评价 ---------------- */
.testimonial-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.testimonial-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 26px;
  display: flex; flex-direction: column;
}
.stars { color: var(--gold); letter-spacing: 3px; font-size: 15px; margin-bottom: 14px; }
.testimonial-card blockquote { color: var(--text-2); font-size: 14.5px; flex: 1; }
.testimonial-card blockquote::before { content: "“"; color: var(--gold); font-size: 26px; line-height: 0; vertical-align: -6px; margin-right: 3px; }
.t-user { display: flex; align-items: center; gap: 12px; margin-top: 20px; padding-top: 18px; border-top: 1px dashed var(--border); }
.t-avatar {
  width: 42px; height: 42px; border-radius: 50%; flex: none;
  display: grid; place-items: center; font-weight: 700; color: #0b0e17;
  background: linear-gradient(135deg, var(--gold-2), var(--gold-deep));
}
.t-user b { font-size: 14.5px; display: block; }
.t-user span { font-size: 12.5px; color: var(--muted); }

/* ---------------- 手风琴（FAQ） ---------------- */
.accordion { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.acc-item { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; transition: border-color .2s; }
.acc-item.open { border-color: rgba(240,177,59,.4); background: var(--card-hover); }
.acc-q {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 19px 22px;
  background: none; border: none; cursor: pointer;
  color: var(--text); font-size: 15.5px; font-weight: 600; text-align: left;
  font-family: inherit;
}
.acc-q:hover { color: var(--gold-2); }
.acc-q .q-mark { color: var(--gold); font-weight: 800; margin-right: 4px; }
.acc-q .arrow { flex: none; width: 26px; height: 26px; border-radius: 7px; background: rgba(255,255,255,.06); display: grid; place-items: center; transition: transform .25s, background .2s; }
.acc-q .arrow svg { width: 14px; height: 14px; }
.acc-item.open .arrow { transform: rotate(180deg); background: rgba(240,177,59,.18); color: var(--gold); }
.acc-a { max-height: 0; overflow: hidden; transition: max-height .32s ease; }
.acc-a-inner { padding: 0 22px 20px 22px; color: var(--muted); font-size: 14.5px; }
.acc-a-inner strong { color: var(--text-2); }

/* FAQ 分类标签 */
.faq-cats { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-bottom: 34px; }
.faq-cat {
  padding: 8px 20px; border-radius: 999px; font-size: 14px; cursor: pointer;
  background: rgba(255,255,255,.04); border: 1px solid var(--border); color: var(--text-2);
  transition: all .2s; font-family: inherit;
}
.faq-cat:hover { color: #fff; border-color: var(--border-strong); }
.faq-cat.active { background: rgba(240,177,59,.14); border-color: rgba(240,177,59,.45); color: var(--gold-2); }

/* ---------------- 更新日志时间线 ---------------- */
.timeline { max-width: 880px; margin: 0 auto; position: relative; padding-left: 34px; }
.timeline::before { content: ""; position: absolute; left: 9px; top: 8px; bottom: 8px; width: 2px;
  background: linear-gradient(180deg, var(--gold), rgba(240,177,59,.15)); }
.tl-item { position: relative; padding-bottom: 34px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: ""; position: absolute; left: -31px; top: 6px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--bg); border: 3px solid var(--gold);
  box-shadow: 0 0 0 4px rgba(240,177,59,.12);
}
.tl-head { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-bottom: 10px; }
.tl-ver { font-size: 18px; font-weight: 800; color: var(--gold-2); }
.tl-date { font-size: 13px; color: var(--muted); background: rgba(255,255,255,.05); border: 1px solid var(--border); padding: 2px 12px; border-radius: 999px; }
.tl-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 20px 22px; }
.tl-card ul li {
  position: relative; padding-left: 64px; margin: 9px 0; color: var(--text-2); font-size: 14.5px; min-height: 24px;
}
.tl-card ul li .lb {
  position: absolute; left: 0; top: 2px;
  font-size: 12px; font-weight: 700; width: 52px; text-align: center;
  padding: 1px 0; border-radius: 6px;
}
.lb-add { color: #06281a; background: rgba(61,220,151,.85); }
.lb-opt { color: #281a04; background: rgba(240,177,59,.9); }
.lb-fix { color: #2c0d11; background: rgba(255,107,107,.8); }

/* ---------------- 新闻/动态 ---------------- */
.news-filter { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 34px; }
.news-list { display: flex; flex-direction: column; gap: 16px; }
.news-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 28px;
  transition: border-color .25s, transform .25s, background .25s;
}
.news-item:hover { border-color: rgba(88,169,255,.4); background: var(--card-hover); transform: translateX(4px); }
.news-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; flex-wrap: wrap; }
.news-cat { font-size: 12px; font-weight: 700; padding: 3px 11px; border-radius: 999px; letter-spacing: .5px; }
.cat-notice { background: rgba(88,169,255,.16); color: var(--blue-2); border: 1px solid rgba(88,169,255,.3); }
.cat-guide { background: rgba(61,220,151,.14); color: var(--green); border: 1px solid rgba(61,220,151,.3); }
.cat-safe { background: rgba(240,177,59,.13); color: var(--gold-2); border: 1px solid rgba(240,177,59,.3); }
.cat-version { background: rgba(167,139,250,.15); color: var(--purple); border: 1px solid rgba(167,139,250,.3); }
.news-date { font-size: 13px; color: var(--muted); }
.news-item h3 { font-size: 18px; line-height: 1.5; }
.news-item h3 a { color: var(--text); }
.news-item h3 a:hover { color: var(--gold-2); }
.news-summary { color: var(--muted); font-size: 14.5px; margin-top: 9px; }
.news-more { margin-top: 14px; display: inline-flex; align-items: center; gap: 6px; font-size: 13.5px; font-weight: 600; color: var(--blue-2); cursor: pointer; background: none; border: 0; font-family: inherit; padding: 0; }
.news-more svg { width: 14px; height: 14px; transition: transform .25s; }
.news-item.open .news-more svg { transform: rotate(180deg); }
.news-full { max-height: 0; overflow: hidden; transition: max-height .4s ease; }
.news-full-inner { padding-top: 14px; color: var(--text-2); font-size: 14.5px; }
.news-full-inner p { margin: 10px 0; }
.news-full-inner h4 { font-size: 15.5px; color: var(--text); margin: 18px 0 6px; }

/* ---------------- 内页头图 ---------------- */
.page-hero {
  position: relative;
  padding: calc(var(--header-h) + 58px) 0 54px;
  z-index: 1;
  overflow: hidden;
}
.page-hero-bg { position: absolute; inset: 0; z-index: 0; }
.page-hero-bg.img {
  background:
    linear-gradient(180deg, rgba(11,14,23,.8) 0%, rgba(11,14,23,.92) 70%, var(--bg) 100%),
    linear-gradient(90deg, rgba(11,14,23,.95), rgba(11,14,23,.5)),
    var(--ph-img) center/cover;
}
.page-hero-bg.gradient {
  background:
    radial-gradient(700px 320px at 80% 0%, rgba(88,169,255,.12), transparent 60%),
    radial-gradient(600px 300px at 10% 10%, rgba(240,177,59,.1), transparent 60%);
}
.page-hero .container { position: relative; z-index: 1; }
.breadcrumb { font-size: 13.5px; color: var(--muted); margin-bottom: 18px; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--gold-2); }
.breadcrumb span { margin: 0 8px; opacity: .6; }
.page-hero h1 { font-size: clamp(26px, 3.6vw, 38px); font-weight: 800; line-height: 1.3; }
.page-hero h1 .hl { color: var(--gold); }
.page-hero p { color: var(--text-2); margin-top: 14px; max-width: 720px; font-size: 16px; }

/* ---------------- 双栏布局（下载页/关于页） ---------------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.split-media { border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); box-shadow: var(--shadow); position: relative; }
.split-media img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.split-media .float-badge {
  position: absolute; left: 18px; bottom: 18px;
  background: rgba(11,14,23,.82); backdrop-filter: blur(8px);
  border: 1px solid var(--border-strong);
  border-radius: 12px; padding: 12px 18px;
  font-size: 13.5px;
}
.split-media .float-badge b { color: var(--gold-2); font-size: 17px; display: block; }
.content-block h2 { font-size: 27px; margin-bottom: 16px; line-height: 1.4; }
.content-block h2 .hl { color: var(--gold); }
.content-block p { color: var(--text-2); margin: 12px 0; }
.check-list li { position: relative; padding-left: 30px; margin: 13px 0; color: var(--text-2); font-size: 14.5px; }
.check-list li::before {
  content: ""; position: absolute; left: 0; top: 4px;
  width: 18px; height: 18px; border-radius: 50%;
  background: rgba(61,220,151,.15);
}
.check-list li::after {
  content: ""; position: absolute; left: 5px; top: 8px;
  width: 8px; height: 4px;
  border-left: 2px solid var(--green); border-bottom: 2px solid var(--green);
  transform: rotate(-45deg);
}
.check-list li b { color: var(--text); }

/* ---------------- 下载页 ---------------- */
.download-panel {
  background: linear-gradient(165deg, rgba(255,255,255,.07), rgba(255,255,255,.025));
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 38px;
  box-shadow: var(--shadow);
}
.dl-version-row { display: flex; flex-wrap: wrap; gap: 10px 26px; margin: 20px 0 26px; }
.dl-version-row .it { font-size: 14px; color: var(--muted); display: flex; gap: 8px; }
.dl-version-row .it b { color: var(--text-2); font-weight: 600; }
.dl-btns { display: flex; flex-wrap: wrap; gap: 14px; }
.dl-note { margin-top: 18px; font-size: 13px; color: var(--muted); display: flex; gap: 8px; align-items: flex-start; }
.dl-note svg { width: 15px; height: 15px; color: var(--gold); flex: none; margin-top: 3px; }

.req-table { width: 100%; border-collapse: collapse; background: var(--card); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); }
.req-table th, .req-table td { padding: 15px 22px; text-align: left; font-size: 14.5px; border-bottom: 1px solid var(--border); }
.req-table th { background: rgba(255,255,255,.05); color: var(--gold-2); font-weight: 600; width: 180px; }
.req-table tr:last-child td { border-bottom: 0; }
.req-table td { color: var(--text-2); }

.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; counter-reset: step; }
.step-card { position: relative; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px 22px 24px; }
.step-card::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  font-size: 30px; font-weight: 800;
  color: transparent; -webkit-text-stroke: 1.4px rgba(240,177,59,.55);
  display: block; margin-bottom: 10px; line-height: 1;
}
.step-card h3 { font-size: 16px; margin-bottom: 8px; }
.step-card p { font-size: 13.5px; color: var(--muted); }

/* 标签云（功能模块） */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; }
.tag-cloud span {
  font-size: 13.5px; color: var(--text-2);
  background: rgba(255,255,255,.04);
  border: 1px solid var(--border);
  padding: 7px 15px; border-radius: 999px;
  transition: all .2s;
}
.tag-cloud span:hover { border-color: rgba(240,177,59,.45); color: var(--gold-2); background: rgba(240,177,59,.08); }

/* ---------------- 关于页 ---------------- */
.milestone { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.mile-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px 22px; position: relative; }
.mile-card .year { font-size: 26px; font-weight: 800; color: var(--gold-2); }
.mile-card h3 { font-size: 15.5px; margin: 8px 0; }
.mile-card p { font-size: 13.5px; color: var(--muted); }

.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.value-card { padding: 28px; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); }
.value-card .ic { width: 48px; height: 48px; border-radius: 12px; display: grid; place-items: center; margin-bottom: 16px;
  background: rgba(88,169,255,.1); border: 1px solid rgba(88,169,255,.3); color: var(--blue-2); }
.value-card .ic svg { width: 24px; height: 24px; }
.value-card h3 { font-size: 17px; margin-bottom: 8px; }
.value-card p { font-size: 14px; color: var(--muted); }

.contact-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 48px; }
.contact-card { text-align: center; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px 18px; transition: border-color .25s, transform .25s; }
.contact-card:hover { border-color: rgba(240,177,59,.4); transform: translateY(-4px); }
.contact-card .ic { width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; margin: 0 auto 15px;
  background: rgba(240,177,59,.12); border: 1px solid rgba(240,177,59,.28); color: var(--gold); }
.contact-card .ic svg { width: 25px; height: 25px; }
.contact-card h3 { font-size: 15px; color: var(--muted); font-weight: 500; margin-bottom: 6px; }
.contact-card b { font-size: 17px; word-break: break-all; }

.contact-form-wrap { display: grid; grid-template-columns: 1.05fr .95fr; gap: 36px; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 40px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13.5px; color: var(--text-2); margin-bottom: 7px; font-weight: 500; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%;
  background: rgba(255,255,255,.04);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 12px 15px;
  color: var(--text);
  font-size: 14.5px;
  font-family: inherit;
  transition: border-color .2s, background .2s;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none; border-color: rgba(240,177,59,.55); background: rgba(255,255,255,.06);
}
.form-group textarea { resize: vertical; min-height: 110px; }
.form-side h3 { font-size: 21px; margin-bottom: 12px; }
.form-side p { color: var(--muted); font-size: 14.5px; margin-bottom: 18px; }
.service-time li { display: flex; justify-content: space-between; gap: 14px; padding: 12px 0; border-bottom: 1px dashed var(--border); font-size: 14px; color: var(--text-2); }
.service-time li:last-child { border-bottom: 0; }
.service-time li b { color: var(--gold-2); font-weight: 600; }
.form-tip { margin-top: 12px; font-size: 12.5px; color: var(--muted); }
.form-success {
  display: none;
  background: rgba(61,220,151,.1);
  border: 1px solid rgba(61,220,151,.35);
  color: var(--green);
  border-radius: 10px;
  padding: 14px 18px;
  font-size: 14px;
  margin-top: 14px;
}
.form-success.show { display: block; }

/* ---------------- CTA 横幅 ---------------- */
.cta-band {
  position: relative;
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  text-align: center;
  overflow: hidden;
  background:
    radial-gradient(600px 240px at 50% -40%, rgba(240,177,59,.22), transparent 70%),
    linear-gradient(135deg, #1a1408, #101423 60%, #0c1424);
  border: 1px solid rgba(240,177,59,.28);
}
.cta-band h2 { font-size: clamp(24px, 3vw, 32px); line-height: 1.4; }
.cta-band h2 .hl { color: var(--gold); }
.cta-band p { color: var(--text-2); margin: 14px auto 28px; max-width: 560px; }
.cta-band .hero-meta { justify-content: center; margin-top: 24px; }

/* ---------------- 页脚 ---------------- */
.site-footer { position: relative; z-index: 1; margin-top: 40px; border-top: 1px solid var(--border); background: rgba(8,10,18,.7); }
.footer-main { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; padding: 58px 0 44px; }
.footer-brand p { color: var(--muted); font-size: 13.5px; margin: 16px 0 18px; max-width: 320px; }
.footer-social { display: flex; gap: 10px; }
.footer-social a {
  width: 38px; height: 38px; border-radius: 10px;
  background: rgba(255,255,255,.05); border: 1px solid var(--border);
  display: grid; place-items: center; color: var(--text-2);
}
.footer-social a:hover { color: var(--gold); border-color: rgba(240,177,59,.4); }
.footer-social svg { width: 18px; height: 18px; }
.footer-col h4 { font-size: 15px; margin-bottom: 18px; color: var(--text); }
.footer-col ul li { margin: 10px 0; }
.footer-col ul a { color: var(--muted); font-size: 13.5px; }
.footer-col ul a:hover { color: var(--gold-2); }
.footer-bottom { border-top: 1px solid var(--border); padding: 20px 0; }
.footer-bottom .container { display: flex; flex-wrap: wrap; gap: 10px 26px; justify-content: space-between; align-items: center; }
.footer-bottom p { font-size: 12.5px; color: #647085; }
.footer-bottom a { color: #647085; }
.footer-bottom a:hover { color: var(--muted); }
.footer-seo { font-size: 12px; color: #55607a; line-height: 1.8; padding: 0 0 30px; text-align: center; max-width: 960px; margin: 0 auto; }

/* ---------------- 返回顶部 / 弹窗 ---------------- */
.back-top {
  position: fixed; right: 26px; bottom: 26px; z-index: 90;
  width: 46px; height: 46px; border-radius: 12px;
  background: linear-gradient(135deg, var(--gold-2), var(--gold-deep));
  color: #171104;
  border: none; cursor: pointer;
  display: grid; place-items: center;
  opacity: 0; visibility: hidden; transform: translateY(12px);
  transition: all .25s;
  box-shadow: var(--shadow-gold);
}
.back-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-top svg { width: 20px; height: 20px; }

.modal-mask {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(5,7,13,.75); backdrop-filter: blur(6px);
  display: none; align-items: center; justify-content: center; padding: 20px;
}
.modal-mask.show { display: flex; }
.modal {
  width: min(440px, 100%);
  background: linear-gradient(165deg, var(--bg-3), var(--bg-2));
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 36px 32px 30px;
  text-align: center;
  position: relative;
  box-shadow: var(--shadow);
}
.modal-close { position: absolute; right: 16px; top: 14px; background: none; border: 0; color: var(--muted); cursor: pointer; font-size: 20px; line-height: 1; }
.modal-close:hover { color: #fff; }
.modal .dl-ic {
  width: 62px; height: 62px; margin: 0 auto 18px; border-radius: 18px;
  display: grid; place-items: center;
  background: rgba(240,177,59,.14); border: 1px solid rgba(240,177,59,.35); color: var(--gold);
}
.modal .dl-ic svg { width: 30px; height: 30px; }
.modal h3 { font-size: 21px; margin-bottom: 10px; }
.modal p { color: var(--muted); font-size: 14px; margin-bottom: 20px; }
.modal .qr-box { width: 150px; height: 150px; margin: 0 auto 16px; border-radius: 14px; background: #fff; padding: 10px; }
.modal .qr-box svg { width: 100%; height: 100%; }
.modal .group-no { font-size: 22px; font-weight: 800; color: var(--gold-2); letter-spacing: 2px; }
.modal .copy-row { margin-top: 18px; display: flex; gap: 10px; }
.modal .copy-row input { flex: 1; background: rgba(255,255,255,.05); border: 1px solid var(--border); border-radius: 9px; padding: 11px 14px; color: var(--text); font-size: 14px; text-align: center; letter-spacing: 1px; }

/* ---------------- 入场动画 ---------------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: .08s; }
.reveal-d2 { transition-delay: .16s; }
.reveal-d3 { transition-delay: .24s; }
.reveal-d4 { transition-delay: .32s; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 1024px) {
  .feature-grid, .testimonial-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-points, .stats, .why-grid, .contact-grid, .steps, .milestone { grid-template-columns: repeat(2, 1fr); }
  .footer-main { grid-template-columns: 1fr 1fr; gap: 32px; }
  .value-grid { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .nav {
    position: fixed;
    top: var(--header-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch;
    background: rgba(10,13,22,.98);
    border-bottom: 1px solid var(--border);
    padding: 12px 20px 20px;
    gap: 2px;
    transform: translateY(-12px); opacity: 0; visibility: hidden;
    transition: all .25s;
  }
  .nav.open { transform: none; opacity: 1; visibility: visible; }
  .nav a { padding: 13px 14px; font-size: 15px; }
  .nav a.active::after { display: none; }
  .nav-actions .btn { display: none; }
  .split { grid-template-columns: 1fr; gap: 30px; }
  .contact-form-wrap { grid-template-columns: 1fr; padding: 28px 22px; }
  .section { padding: 64px 0; }
}

@media (max-width: 600px) {
  .container { width: calc(100% - 28px); }
  .feature-grid, .testimonial-grid, .hero-points, .stats, .why-grid, .contact-grid, .steps, .milestone, .footer-main, .form-row { grid-template-columns: 1fr; }
  .section-head h2 { font-size: 25px; }
  .hero { padding-bottom: 56px; }
  .hero-cta .btn { width: 100%; }
  .download-panel { padding: 26px 20px; }
  .cta-band { padding: 40px 22px; }
  .req-table th { display: block; width: 100%; border-bottom: 0; padding-bottom: 4px; }
  .req-table td { display: block; padding-top: 4px; }
  .tl-card ul li { padding-left: 0; }
  .tl-card ul li .lb { position: static; display: inline-block; margin-right: 8px; }
}