/* ============================================================
   NOOSR 官网样式 · 版本 A「分层用绿」
   策略：青氚绿 #10F0A8 只用于小面积交互元素（按钮/眉题/导航/
        编号/标签/链接）；大面积文字强调用"网站绿"#42DCA4
        （同色相≈160°，降饱和降明度，久看不累）。
   依据：《设计风格：色彩 用例》+ 派生原则"不改色相，只调明度饱和度"
   ============================================================ */

:root {
  /* 青氚色板（唯一色表） */
  --green: #10F0A8;        /* 青氚绿 · 小面积交互专用 */
  --green-web: #42DCA4;    /* 网站绿 · 大面积文字强调（A版派生色） */
  --green-light: #80F8E0;  /* 薄荷浅端 */
  --green-deep: #08C098;   /* 翡翠深端 */
  /* 深色模式基底 */
  --bg-deep: #000407;
  --bg-panel: #0A1210;
  --bg-raise: #12201C;
  --border: rgba(184, 196, 192, 0.18);
  /* 文字 */
  --text-main: #FFFFFF;
  --text-sub: #B8C4C0;
  --text-dim: rgba(255, 255, 255, 0.5);
  /* 渐变（浅下深上，只用于大块） */
  --grad-main: linear-gradient(180deg, #08C098 0%, #80F8E0 100%);
  /* 尺寸基线 */
  --content-w: 1200px;
  --radius-card: 14px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg-deep);
  color: var(--text-main);
  font-family: "HarmonyOS Sans SC", "MiSans", "Source Han Sans SC",
    "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  /* 隐藏态下拉仍占布局，裁掉横向溢出防滚动条 */
  overflow-x: clip;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

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

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(0, 4, 7, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

/* LOGO：调参台单字版（导出 64px 等比缩放 0.55 → 35px 适配导航） */
.brand {
  display: inline-block;
  position: relative;
  font-family: "Space Grotesk", "Inter", sans-serif;
  font-size: 35px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--text-main);
  padding-bottom: 8px;
  white-space: nowrap;
}

.brand .ch { display: inline-block; }

/* 第二个 O：交叠 + 渐变点亮 */
.brand .ch:nth-child(3) {
  margin-left: -0.45em;
  color: transparent;
  background: linear-gradient(135deg, #08C098, #80F8E0);
  -webkit-background-clip: text;
  background-clip: text;
}

.brand::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 8px;
  width: 60%;
  height: 1.4px;
  background: #FFFFFF;
}

.brand::before {
  content: "";
  position: absolute;
  left: 61%;
  bottom: 7px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #10F0A8;
}

.nav-links { display: flex; align-items: center; gap: 36px; }

.nav-links a {
  font-size: 15px;
  color: var(--text-sub);
  padding: 4px 0;
  transition: color 0.2s;
}

.nav-links a:hover { color: var(--text-main); }

.nav-links a.active {
  color: var(--green);
  border-bottom: 2px solid var(--green);
}

/* ---------- 下拉菜单（导航） ---------- */
.dropdown { position: relative; }

.drop-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  font: inherit;
  font-size: 15px;
  color: var(--text-sub);
  padding: 4px 0;
  cursor: pointer;
  transition: color 0.2s;
}

.drop-toggle:hover { color: var(--text-main); }

.drop-toggle .caret {
  font-size: 10px;
  color: var(--text-dim);
  transition: transform 0.2s, color 0.2s;
}

.dropdown:hover .drop-toggle,
.dropdown:focus-within .drop-toggle { color: var(--green); }

.dropdown:hover .caret,
.dropdown:focus-within .caret {
  transform: rotate(180deg);
  color: var(--green);
}

.drop-menu {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, transform 0.2s, visibility 0s linear 0.2s;
  z-index: 200;
}

.dropdown:hover .drop-menu,
.dropdown:focus-within .drop-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  transition: opacity 0.2s, transform 0.2s;
}

/* 卡片型下拉（AI工具参谋） */
.drop-cards {
  display: grid;
  grid-template-columns: 260px;
  gap: 12px;
  padding: 12px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
}

.drop-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px;
  background: var(--bg-raise);
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: border-color 0.2s, transform 0.2s;
}

.drop-card:hover {
  border-color: var(--green-deep);
  transform: translateY(-1px);
}

.drop-card .dc-tag {
  align-self: flex-start;
  font-size: 11px;
  color: var(--green);
  border: 1px solid rgba(16, 240, 168, 0.35);
  border-radius: 999px;
  padding: 1px 10px;
}

.drop-card .dc-title {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-main);
}

.drop-card .dc-desc {
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-sub);
}

/* list 型下拉（关于我们）：右对齐防溢出右缘 */
.drop-list {
  display: flex;
  flex-direction: column;
  min-width: 150px;
  padding: 8px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  left: auto;
  right: 0;
  transform: translateY(8px);
}

.dropdown:hover .drop-list,
.dropdown:focus-within .drop-list {
  transform: translateY(0);
}

.drop-list a {
  padding: 10px 16px;
  font-size: 14px;
  color: var(--text-sub);
  border-radius: 6px;
  transition: background 0.15s, color 0.15s;
}

.drop-list a:hover {
  background: var(--bg-raise);
  color: var(--green);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  transition: all 0.2s;
  cursor: pointer;
}

/* 主按钮：青氚绿底 + 黑字（小面积，允许最亮） */
.btn-primary {
  background: var(--green);
  color: #001A12;
}

.btn-primary:hover {
  background: var(--green-deep);
  transform: translateY(-1px);
}

.btn-ghost {
  border: 1px solid var(--green-deep);
  color: var(--green);
}

.btn-ghost:hover {
  border-color: var(--green);
  color: var(--green-light);
}

.btn-sm { padding: 8px 20px; font-size: 14px; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: calc(56vh - 64px);
  padding: 72px 0;
  text-align: center;
  overflow: hidden;
}

.hero .container { width: 100%; }

/* 子页 Hero：比首页矮 */
.hero-page {
  min-height: 0;
  padding: 64px 0 48px;
}

/* 品牌故事页 */
.brand-line {
  margin-top: 32px;
  text-align: center;
  font-size: 20px;
  font-weight: 500;
  color: var(--green-web);
}

.brand-story {
  margin: 0 auto;
  max-width: 720px;
  padding: 32px 40px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-left: 4px solid var(--green);
  border-radius: var(--radius-card);
  font-size: 17px;
  line-height: 2;
  color: var(--text-sub);
}

.brand-story b { color: var(--green); font-weight: 600; }

/* 深空微光：A版降透明度，避免与文字叠加发亮 */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(600px 300px at 50% -10%, rgba(16, 240, 168, 0.10), transparent 70%),
    radial-gradient(500px 260px at 82% 60%, rgba(8, 192, 152, 0.08), transparent 70%);
  pointer-events: none;
}

/* 星点粒子（绿色三档） */
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 18% 30%, rgba(255, 255, 255, 0.5) 50%, transparent 51%),
    radial-gradient(1px 1px at 62% 18%, rgba(128, 248, 224, 0.45) 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 84% 42%, rgba(16, 240, 168, 0.55) 50%, transparent 51%),
    radial-gradient(1px 1px at 32% 68%, rgba(255, 255, 255, 0.3) 50%, transparent 51%),
    radial-gradient(1px 1px at 74% 78%, rgba(128, 248, 224, 0.4) 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 10% 82%, rgba(8, 192, 152, 0.6) 50%, transparent 51%);
  pointer-events: none;
}

.hero .container { position: relative; z-index: 1; }

.hero-eyebrow {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 0.15em;
  color: var(--green);
  border: 1px solid rgba(16, 240, 168, 0.35);
  border-radius: 999px;
  padding: 6px 18px;
  margin-bottom: 28px;
}

.hero h1 {
  font-size: 56px;
  line-height: 1.2;
  font-weight: 600;
  margin-bottom: 24px;
}

/* 大标题关键短语：网站绿（大面积文字不用最亮绿） */
.hero h1 .acc { color: var(--green-web); }

.hero p.sub {
  font-size: 18px;
  color: var(--text-sub);
  max-width: 640px;
  margin: 0 auto 40px;
}

.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ---------- 通用区块 ---------- */
.section { padding: 72px 0; }

.section-head { margin-bottom: 40px; }

.section-head h2 {
  font-size: 32px;
  line-height: 1.3;
  font-weight: 600;
  margin-bottom: 12px;
}

.section-head p { color: var(--text-sub); max-width: 680px; }

/* ---------- 卡片 ---------- */
.card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 32px;
}

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

/* ---------- 例子效果：视觉展示区 ---------- */
.showcase {
  position: relative;
  height: 44vh;
  min-height: 300px;
  overflow: hidden;
}

.showcase > canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* ---------- 要点列表 ---------- */
.feature-list { list-style: none; }

.feature-list li {
  position: relative;
  padding-left: 22px;
  color: var(--text-sub);
  font-size: 15px;
  margin-bottom: 10px;
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
}

.feature-list li b { color: var(--text-main); font-weight: 500; }

/* ---------- 流程步骤卡 ---------- */
.step-card { display: flex; flex-direction: column; gap: 12px; }

.step-card .num {
  font-family: "Space Grotesk", "Inter", sans-serif;
  font-size: 14px;
  font-weight: 700;
  color: var(--green);
  letter-spacing: 0.1em;
}

.step-card h3 { font-size: 18px; font-weight: 500; }

.step-card p { color: var(--text-sub); font-size: 14px; }

/* ---------- 团队卡 ---------- */
.member-card h3 { font-size: 18px; font-weight: 500; margin-bottom: 4px; }

.member-card .role {
  font-size: 13px;
  color: var(--green);
  margin-bottom: 12px;
}

.member-card p { color: var(--text-sub); font-size: 14px; }

/* ---------- 联系区 ---------- */
.contact { text-align: center; }

.qr-card {
  width: 260px;
  margin: 28px auto 0;
  padding: 14px;
  background: var(--bg-panel);
  border: 1px solid rgba(16, 240, 168, 0.4);
  border-radius: 18px;
}

.qr-card img {
  display: block;
  width: 100%;
  border-radius: 10px;
}

.qr-sign {
  margin-top: 14px;
  font-size: 20px;
  font-weight: 700;
  color: var(--green);
  letter-spacing: 2px;
}

.qr-note { color: var(--text-dim); font-size: 13px; }

/* ---------- 页脚 ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
  text-align: center;
  color: var(--text-dim);
  font-size: 13px;
  line-height: 2;
}

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .hero h1 { font-size: 42px; }
  .hero { padding: 72px 0 80px; }
  .section { padding: 56px 0; }
}

@media (max-width: 640px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .hero h1 { font-size: 34px; }
  .hero p.sub { font-size: 16px; }
  .section-head h2 { font-size: 26px; }
  .nav-links { gap: 20px; }
  .nav .btn-sm { display: none; }
  /* 下拉右对齐防溢出，卡片降为窄版 */
  .drop-menu { left: auto; right: 0; transform: translateY(8px); }
  .dropdown:hover .drop-menu,
  .dropdown:focus-within .drop-menu { transform: translateY(0); }
  .drop-cards { grid-template-columns: 220px; }
}