/* =========================================================
   Qishujia · 企数家官网公共样式
   Design concept: Editorial Tech —— 刊物质感 × 企业蓝 × 珊瑚橘
   ========================================================= */

:root {
  /* Palette */
  --qs-paper:      #F5F1E6;   /* 主背景 · 暖奶色 */
  --qs-paper-2:    #EBE5D3;   /* 深一档纸色 */
  --qs-paper-3:    #DED5BA;   /* 卡片区分 */
  --qs-ink:        #0B1220;   /* 主文本 */
  --qs-ink-soft:   #2A3348;
  --qs-muted:      #6B6A65;
  --qs-line:       rgba(11,18,32,.12);
  --qs-line-2:     rgba(11,18,32,.22);

  --qs-blue:       #2C6BF2;   /* 品牌蓝(来自 logo) */
  --qs-blue-deep:  #1A46B8;
  --qs-blue-soft:  #D9E4FD;

  --qs-coral:      #FF5C28;   /* 强调色 */
  --qs-coral-soft: #FFE0D1;

  --qs-lime:       #C7FF4E;   /* 数据/AI 亮点 */
  --qs-plum:       #2B1F3F;   /* 深紫暗区 */

  /* Typography */
  --ff-serif: "Fraunces", "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --ff-sans:  "Noto Sans SC", "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --ff-mono:  "JetBrains Mono", "Fira Code", ui-monospace, monospace;

  /* Elevation */
  --qs-shadow-1: 0 1px 0 var(--qs-line);
  --qs-shadow-2: 0 10px 30px -12px rgba(11,18,32,.18);
  --qs-shadow-3: 0 20px 60px -20px rgba(11,18,32,.35);

  /* Radius */
  --qs-radius-sm: 6px;
  --qs-radius:    14px;
  --qs-radius-lg: 22px;
}

/* ---------- 基础 ---------- */
* { -webkit-font-smoothing: antialiased; }
html { scroll-behavior: smooth; }
body {
  background: var(--qs-paper);
  color: var(--qs-ink);
  font-family: var(--ff-sans);
  font-size: 15px;
  line-height: 1.7;
  letter-spacing: .01em;
  background-image:
    radial-gradient(rgba(11,18,32,.035) 1px, transparent 1px);
  background-size: 24px 24px;
  background-position: 0 0;
  margin: 0;
}

::selection { background: var(--qs-ink); color: var(--qs-paper); }

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

/* 噪点纸纹 */
.qs-grain::before {
  content: "";
  position: absolute; inset: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 0.22 0'/></filter><rect width='100%' height='100%' filter='url(%23n)' opacity='0.35'/></svg>");
  mix-blend-mode: multiply;
  opacity: .5;
}

/* ---------- Typography utilities ---------- */
.ff-serif { font-family: var(--ff-serif); font-optical-sizing: auto; }
.ff-sans  { font-family: var(--ff-sans); }
.ff-mono  { font-family: var(--ff-mono); letter-spacing: 0; }

.display-1 {
  font-family: var(--ff-serif);
  font-weight: 400;
  font-size: clamp(48px, 7vw, 104px);
  line-height: .98;
  letter-spacing: -0.02em;
}
.display-2 {
  font-family: var(--ff-serif);
  font-weight: 400;
  font-size: clamp(36px, 4.8vw, 64px);
  line-height: 1.02;
  letter-spacing: -0.01em;
}
.display-3 {
  font-family: var(--ff-serif);
  font-weight: 400;
  font-size: clamp(26px, 3vw, 40px);
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.eyebrow {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--qs-ink-soft);
  display: inline-flex; align-items: center; gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 22px; height: 1px;
  background: currentColor;
  opacity: .6;
}

.italic-accent { font-style: italic; font-family: var(--ff-serif); color: var(--qs-coral); }

/* ---------- 容器与网格 ---------- */
.qs-container { max-width: 1280px; margin: 0 auto; padding-inline: 28px; }
@media (min-width: 1024px) { .qs-container { padding-inline: 48px; } }

.qs-rule { height: 1px; background: var(--qs-line); border: 0; }
.qs-rule-soft { height: 1px; background: var(--qs-line); opacity: .6; border: 0; }

/* ---------- 按钮 ---------- */
.qs-btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px;
  border-radius: 999px;
  font-weight: 500;
  font-size: 14px;
  letter-spacing: .02em;
  transition: transform .35s cubic-bezier(.2,.8,.2,1), background .3s, color .3s, box-shadow .3s;
  white-space: nowrap;
  cursor: pointer;
  border: 1px solid transparent;
}
.qs-btn:hover { transform: translateY(-2px); }
.qs-btn-primary {
  background: var(--qs-ink);
  color: var(--qs-paper);
}
.qs-btn-primary:hover {
  background: var(--qs-blue);
  box-shadow: 0 12px 30px -12px rgba(44,107,242,.6);
}
.qs-btn-coral {
  background: var(--qs-coral);
  color: #fff;
}
.qs-btn-coral:hover { box-shadow: 0 12px 30px -12px rgba(255,92,40,.55); }
.qs-btn-ghost {
  background: transparent;
  color: var(--qs-ink);
  border-color: var(--qs-line-2);
}
.qs-btn-ghost:hover {
  background: var(--qs-ink);
  color: var(--qs-paper);
  border-color: var(--qs-ink);
}
.qs-btn-lg { padding: 18px 28px; font-size: 15px; }
.qs-btn .arrow {
  width: 28px; height: 28px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,.16);
  transition: transform .4s;
}
.qs-btn:hover .arrow { transform: translateX(3px); }

.qs-link {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--ff-serif);
  font-style: italic;
  font-size: 17px;
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
  transition: color .3s;
}
.qs-link:hover { color: var(--qs-coral); }

/* ---------- Logo ---------- */
.qs-logo {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--ff-serif);
  font-size: 22px;
  letter-spacing: .02em;
}
.qs-logo-mark {
  width: 36px; height: 36px;
  background: var(--qs-blue);
  color: #fff;
  border-radius: 9px;
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--ff-sans);
  font-size: 13px; font-weight: 700;
  letter-spacing: 0;
  box-shadow: inset 0 -6px 10px rgba(0,0,0,.15), 0 6px 18px -8px rgba(44,107,242,.6);
  position: relative;
  overflow: hidden;
}
.qs-logo-mark::after {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(circle at 30% 25%, rgba(255,255,255,.45), transparent 55%);
}
.qs-logo-mark span { position: relative; z-index: 1; }

/* ---------- 顶部导航 ---------- */
.qs-nav {
  position: sticky; top: 0; z-index: 60;
  backdrop-filter: blur(14px);
  background: rgba(245,241,230,.82);
  border-bottom: 1px solid var(--qs-line);
}
.qs-nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.qs-nav-menu {
  display: none;
  align-items: center; gap: 28px;
  font-size: 14px;
}
@media (min-width: 1024px) { .qs-nav-menu { display: flex; } }
.qs-nav-menu a {
  position: relative;
  padding: 6px 2px;
  color: var(--qs-ink-soft);
  transition: color .3s;
}
.qs-nav-menu a:hover { color: var(--qs-ink); }
.qs-nav-menu a.active { color: var(--qs-ink); }
.qs-nav-menu a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -6px;
  height: 2px; background: var(--qs-coral);
}

/* ---------- 公告条 (marquee) ---------- */
.qs-marquee {
  background: var(--qs-ink);
  color: var(--qs-paper);
  overflow: hidden;
  border-top: 1px solid rgba(255,255,255,.06);
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.qs-marquee-track {
  display: inline-flex;
  padding-block: 10px;
  white-space: nowrap;
  animation: qs-marquee 38s linear infinite;
  gap: 48px;
  font-family: var(--ff-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
}
.qs-marquee-track span {
  display: inline-flex; align-items: center; gap: 14px;
}
.qs-marquee-track i { color: var(--qs-coral); font-size: 10px; }
@keyframes qs-marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ---------- 卡片 ---------- */
.qs-card {
  background: var(--qs-paper);
  border: 1px solid var(--qs-line);
  border-radius: var(--qs-radius);
  transition: transform .4s cubic-bezier(.2,.8,.2,1), box-shadow .4s, border-color .3s, background .3s;
}
.qs-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--qs-shadow-2);
  border-color: var(--qs-line-2);
}

.qs-card-dark {
  background: var(--qs-ink);
  color: var(--qs-paper);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--qs-radius);
}

/* 产品卡 */
.qs-product-card {
  display: flex; flex-direction: column;
  padding: 28px;
  gap: 18px;
  height: 100%;
  position: relative;
}
.qs-product-card .sku {
  font-family: var(--ff-mono);
  font-size: 11px; letter-spacing: .18em;
  color: var(--qs-muted);
  text-transform: uppercase;
}
.qs-product-card h3 {
  font-family: var(--ff-serif);
  font-size: 28px; line-height: 1.1;
}
.qs-product-card .tags {
  display: flex; flex-wrap: wrap; gap: 6px;
}
.qs-chip {
  display: inline-flex; align-items: center;
  padding: 4px 10px;
  font-size: 12px;
  border-radius: 999px;
  border: 1px solid var(--qs-line-2);
  color: var(--qs-ink-soft);
  background: rgba(255,255,255,.25);
}
.qs-chip.solid { background: var(--qs-ink); color: var(--qs-paper); border-color: var(--qs-ink); }
.qs-chip.blue  { background: var(--qs-blue); color: #fff; border-color: var(--qs-blue); }
.qs-chip.coral { background: var(--qs-coral); color: #fff; border-color: var(--qs-coral); }

/* ---------- 入场动画 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .9s cubic-bezier(.2,.8,.2,1), transform .9s cubic-bezier(.2,.8,.2,1);
  transition-delay: var(--reveal-delay, 0ms);
}
[data-reveal].is-in {
  opacity: 1; transform: none;
}

/* ---------- 分节 header ---------- */
.qs-section-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  padding-block: 80px 44px;
}
@media (min-width: 900px) {
  .qs-section-head { grid-template-columns: 1.1fr 1fr; align-items: end; gap: 48px; }
}
.qs-section-head .index-mark {
  font-family: var(--ff-mono);
  font-size: 12px;
  letter-spacing: .24em;
  color: var(--qs-muted);
  text-transform: uppercase;
}

/* ---------- Footer ---------- */
.qs-footer {
  background: var(--qs-ink);
  color: rgba(245,241,230,.82);
  padding-block: 72px 36px;
  margin-top: 120px;
  position: relative;
  overflow: hidden;
}
.qs-footer::before {
  content: "企数家 · QISHUJIA";
  position: absolute;
  bottom: -36px; left: 50%;
  transform: translateX(-50%);
  font-family: var(--ff-serif);
  font-size: clamp(120px, 22vw, 320px);
  font-weight: 400;
  letter-spacing: -0.04em;
  color: rgba(245,241,230,.06);
  white-space: nowrap;
  pointer-events: none;
  line-height: .85;
}
.qs-footer a { transition: color .3s; }
.qs-footer a:hover { color: var(--qs-coral); }
.qs-footer-grid {
  display: grid; gap: 48px;
  grid-template-columns: 1fr;
}
@media (min-width: 900px) {
  .qs-footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1fr 1fr; }
}

/* ---------- Hero · 首页专用 ---------- */
.qs-hero {
  position: relative;
  padding-block: 68px 56px;
  overflow: hidden;
}
.qs-hero-inner {
  display: grid; gap: 56px;
  grid-template-columns: 1fr;
}
@media (min-width: 1024px) {
  .qs-hero-inner {
    grid-template-columns: 1.3fr 1fr;
    gap: 72px;
    align-items: center;
  }
}
.qs-hero h1 {
  font-family: var(--ff-serif);
  font-size: clamp(54px, 7.6vw, 118px);
  line-height: .96;
  letter-spacing: -0.02em;
}
.qs-hero h1 .accent {
  font-style: italic;
  color: var(--qs-blue);
}
.qs-hero h1 .coral {
  font-style: italic;
  color: var(--qs-coral);
}
.qs-hero .meta-col { font-size: 14px; color: var(--qs-ink-soft); }

/* sticker 贴纸 */
.qs-sticker {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--qs-blue);
  color: #fff;
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  box-shadow: 0 12px 30px -14px rgba(44,107,242,.7);
}
.qs-sticker.coral { background: var(--qs-coral); box-shadow: 0 12px 30px -14px rgba(255,92,40,.7); }
.qs-sticker.ink   { background: var(--qs-ink); }

/* 旋转圆环文字 */
.qs-ring {
  position: relative;
  width: 160px; height: 160px;
  border-radius: 50%;
  background: var(--qs-coral);
  color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  animation: qs-spin 18s linear infinite;
  font-size: 36px;
}
@keyframes qs-spin { to { transform: rotate(360deg); } }
.qs-ring svg { position: absolute; inset: 0; }

/* ---------- 产品家族矩阵 ---------- */
.qs-matrix {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border: 1px solid var(--qs-line);
  border-radius: var(--qs-radius);
  overflow: hidden;
  background: var(--qs-paper);
}
@media (min-width: 900px)  { .qs-matrix { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1180px) { .qs-matrix { grid-template-columns: repeat(4, 1fr); } }
.qs-matrix-cell {
  padding: 28px;
  border-right: 1px solid var(--qs-line);
  border-bottom: 1px solid var(--qs-line);
  background: var(--qs-paper);
  transition: background .4s, color .4s;
  position: relative;
  cursor: pointer;
}
.qs-matrix-cell:hover {
  background: var(--qs-ink);
  color: var(--qs-paper);
}
.qs-matrix-cell:hover .code { color: var(--qs-coral); }
.qs-matrix-cell .code {
  font-family: var(--ff-mono); font-size: 11px; letter-spacing: .22em;
  color: var(--qs-muted); text-transform: uppercase;
  margin-bottom: 14px; display: flex; align-items: center; justify-content: space-between;
}
.qs-matrix-cell h4 {
  font-family: var(--ff-serif);
  font-size: 28px; line-height: 1.1;
  margin-bottom: 10px;
}
.qs-matrix-cell p { font-size: 13.5px; opacity: .75; }
.qs-matrix-cell .arrow-icon {
  position: absolute; top: 22px; right: 22px;
  width: 28px; height: 28px; border-radius: 50%;
  border: 1px solid var(--qs-line);
  display: inline-flex; align-items: center; justify-content: center;
  opacity: 0; transform: translate(-6px,6px);
  transition: opacity .4s, transform .4s;
}
.qs-matrix-cell:hover .arrow-icon {
  opacity: 1; transform: none;
  background: var(--qs-coral); border-color: var(--qs-coral); color: #fff;
}

/* ---------- 数据统计 ---------- */
.qs-stat {
  display: flex; flex-direction: column; gap: 6px;
}
.qs-stat .num {
  font-family: var(--ff-serif);
  font-size: clamp(44px, 5vw, 72px);
  line-height: 1;
  letter-spacing: -0.02em;
  font-feature-settings: "tnum" 1;
}
.qs-stat .num .unit {
  font-size: .4em; color: var(--qs-muted);
  margin-left: 6px; letter-spacing: 0;
}
.qs-stat .lbl {
  font-family: var(--ff-mono);
  font-size: 11px; letter-spacing: .2em;
  color: var(--qs-muted); text-transform: uppercase;
}

/* ---------- 时间线 ---------- */
.qs-timeline {
  position: relative;
  padding-left: 24px;
  border-left: 1px solid var(--qs-line-2);
}
.qs-timeline li {
  position: relative;
  padding-block: 16px 22px;
}
.qs-timeline li::before {
  content: ""; position: absolute;
  left: -29px; top: 24px;
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--qs-coral);
  box-shadow: 0 0 0 4px var(--qs-paper);
}
.qs-timeline .yr {
  font-family: var(--ff-mono); font-size: 12px; letter-spacing: .2em;
  color: var(--qs-muted); text-transform: uppercase;
}

/* ---------- 报价矩阵表 ---------- */
.qs-table-wrap { overflow: auto; border: 1px solid var(--qs-line); border-radius: var(--qs-radius); background: var(--qs-paper); }
.qs-table { width: 100%; border-collapse: collapse; min-width: 720px; }
.qs-table th, .qs-table td {
  padding: 16px 18px;
  text-align: left;
  font-size: 14px;
  border-bottom: 1px solid var(--qs-line);
}
.qs-table th {
  font-family: var(--ff-mono);
  font-size: 11px; letter-spacing: .18em;
  text-transform: uppercase; color: var(--qs-muted);
  background: var(--qs-paper-2);
}
.qs-table td.price { font-family: var(--ff-serif); font-size: 18px; }
.qs-table tr:last-child td { border-bottom: 0; }

/* ---------- 客服抽屉 ---------- */
.qs-dock {
  position: fixed;
  right: 24px; bottom: 24px;
  z-index: 70;
  display: flex; flex-direction: column; align-items: flex-end; gap: 10px;
}
.qs-dock-btn {
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--qs-ink); color: var(--qs-paper);
  display: inline-flex; align-items: center; justify-content: center;
  box-shadow: var(--qs-shadow-3);
  cursor: pointer;
  transition: transform .3s;
}
.qs-dock-btn:hover { transform: scale(1.06); background: var(--qs-coral); }

.qs-drawer {
  position: fixed; inset: 0;
  background: rgba(11,18,32,.6);
  backdrop-filter: blur(8px);
  display: none;
  z-index: 80;
}
.qs-drawer.is-open { display: flex; justify-content: flex-end; }
.qs-drawer-panel {
  background: var(--qs-paper);
  width: min(460px, 100%);
  height: 100%;
  padding: 32px;
  overflow-y: auto;
  animation: qs-slide-in .4s cubic-bezier(.2,.8,.2,1);
}
@keyframes qs-slide-in {
  from { transform: translateX(40px); opacity: 0; }
  to   { transform: none; opacity: 1; }
}

/* ---------- 表单 ---------- */
.qs-field { display: flex; flex-direction: column; gap: 8px; margin-bottom: 18px; }
.qs-field label { font-family: var(--ff-mono); font-size: 11px; letter-spacing: .2em; color: var(--qs-muted); text-transform: uppercase; }
.qs-input, .qs-select, .qs-textarea {
  width: 100%;
  padding: 14px 16px;
  background: transparent;
  border: 1px solid var(--qs-line-2);
  border-radius: 12px;
  font-size: 15px; font-family: var(--ff-sans);
  color: var(--qs-ink);
  transition: border-color .3s, box-shadow .3s;
}
.qs-input:focus, .qs-select:focus, .qs-textarea:focus {
  outline: none; border-color: var(--qs-ink);
  box-shadow: 0 0 0 4px rgba(11,18,32,.08);
}
.qs-textarea { min-height: 120px; resize: vertical; }
.qs-tag-check { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; padding: 6px 12px; border: 1px solid var(--qs-line); border-radius: 999px; cursor: pointer; transition: all .25s; font-family: var(--ff-mono); letter-spacing: .08em; color: var(--qs-muted); user-select: none; }
.qs-tag-check input { accent-color: var(--qs-blue); margin: 0; }
.qs-tag-check:hover { border-color: var(--qs-blue); color: var(--qs-blue); }
.qs-tag-check:has(input:checked) { background: var(--qs-blue); color: #fff; border-color: var(--qs-blue); }

/* ---------- 行业卡片 ---------- */
.qs-industry {
  position: relative;
  overflow: hidden;
  border-radius: var(--qs-radius);
  aspect-ratio: 4/5;
  background: #1a1a1a;
  color: #fff;
  isolation: isolate;
  cursor: pointer;
}
.qs-industry img {
  position: absolute; inset: 0;
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 1.4s cubic-bezier(.2,.8,.2,1);
  filter: brightness(.7) saturate(1.05);
}
.qs-industry:hover img { transform: scale(1.08); }
.qs-industry::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(11,18,32,.9) 100%);
  z-index: 1;
}
.qs-industry .content { position: absolute; inset: auto 0 0 0; padding: 28px; z-index: 2; }
.qs-industry .meta { font-family: var(--ff-mono); font-size: 11px; letter-spacing: .2em; opacity: .75; text-transform: uppercase; }
.qs-industry h3 { font-family: var(--ff-serif); font-size: 30px; line-height: 1.1; margin-top: 10px; }

/* ---------- 案例卡 ---------- */
.qs-case {
  background: var(--qs-paper);
  border: 1px solid var(--qs-line);
  border-radius: var(--qs-radius);
  padding: 28px;
  display: flex; flex-direction: column; gap: 20px;
  transition: transform .4s, box-shadow .4s;
}
.qs-case:hover { transform: translateY(-4px); box-shadow: var(--qs-shadow-2); }
.qs-case .brand {
  font-family: var(--ff-serif);
  font-size: 28px;
  letter-spacing: -.01em;
}
.qs-case .industry-tag {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--ff-mono); font-size: 11px; letter-spacing: .18em;
  text-transform: uppercase; color: var(--qs-muted);
}
.qs-case .metrics {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px;
  border-top: 1px solid var(--qs-line); padding-top: 18px;
}
.qs-case .metrics .num { font-family: var(--ff-serif); font-size: 30px; line-height: 1; color: var(--qs-blue); }
.qs-case .metrics .lbl { font-size: 11px; color: var(--qs-muted); margin-top: 4px; letter-spacing: .14em; text-transform: uppercase; font-family: var(--ff-mono); }

/* ---------- Pricing 卡 ---------- */
.qs-plan {
  border: 1px solid var(--qs-line);
  border-radius: var(--qs-radius);
  padding: 32px;
  background: var(--qs-paper);
  transition: border-color .3s, transform .3s;
  position: relative;
}
.qs-plan:hover { border-color: var(--qs-ink); transform: translateY(-3px); }
.qs-plan.featured {
  background: var(--qs-ink);
  color: var(--qs-paper);
  border-color: var(--qs-ink);
}
.qs-plan.featured .qs-btn-ghost { border-color: rgba(255,255,255,.4); color: var(--qs-paper); }
.qs-plan.featured .qs-btn-ghost:hover { background: var(--qs-coral); border-color: var(--qs-coral); color: #fff; }
.qs-plan h3 {
  font-family: var(--ff-serif);
  font-size: 30px; margin-bottom: 6px;
}
.qs-plan .price {
  font-family: var(--ff-serif);
  font-size: 54px; line-height: 1;
  margin-block: 16px 6px;
  letter-spacing: -.02em;
}
.qs-plan .price .unit { font-size: 16px; color: var(--qs-muted); margin-left: 6px; letter-spacing: 0; }
.qs-plan ul { margin-top: 18px; }
.qs-plan li {
  display: flex; gap: 10px; align-items: flex-start;
  padding-block: 8px;
  font-size: 14px;
  border-top: 1px solid var(--qs-line);
}
.qs-plan.featured li { border-top-color: rgba(255,255,255,.1); }
.qs-plan li::before {
  content: "\f00c"; font-family: "Font Awesome 6 Free"; font-weight: 900;
  color: var(--qs-coral);
  font-size: 11px; margin-top: 4px;
}

/* ---------- Tab ---------- */
.qs-tab {
  display: inline-flex;
  padding: 4px;
  background: var(--qs-paper-2);
  border: 1px solid var(--qs-line);
  border-radius: 999px;
  gap: 4px;
}
.qs-tab button {
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 13px;
  color: var(--qs-ink-soft);
  background: transparent;
  border: 0;
  cursor: pointer;
  font-family: var(--ff-sans);
  transition: background .3s, color .3s;
}
.qs-tab button.is-active {
  background: var(--qs-ink);
  color: var(--qs-paper);
}

/* ---------- 浮光 ---------- */
.qs-glow-blue {
  position: absolute;
  width: 520px; height: 520px;
  background: radial-gradient(closest-side, rgba(44,107,242,.35), transparent 70%);
  filter: blur(10px);
  pointer-events: none;
  z-index: 0;
}
.qs-glow-coral {
  position: absolute;
  width: 460px; height: 460px;
  background: radial-gradient(closest-side, rgba(255,92,40,.35), transparent 70%);
  filter: blur(10px);
  pointer-events: none;
  z-index: 0;
}

/* ---------- 其它 ---------- */
.dotted-grid {
  background-image: radial-gradient(rgba(11,18,32,.12) 1px, transparent 1px);
  background-size: 18px 18px;
}

.hairline-top { border-top: 1px solid var(--qs-line); }
.hairline-y   { border-block: 1px solid var(--qs-line); }

/* scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--qs-paper); }
::-webkit-scrollbar-thumb { background: var(--qs-ink); border-radius: 999px; border: 3px solid var(--qs-paper); }