/*
Theme Name: QuickQ Polaris
Theme URI: https://quickqvpn.example.com/polaris
Author: QuickQ Polaris Studio
Author URI: https://quickqvpn.example.com
Description: Conversion-first WordPress theme for global VPN, privacy and cross-border SaaS brands. The Polaris Nightfall palette pairs deep midnight indigo with neon violet aurora and glacier cyan accents — engineered for high-CTR landing pages with @graph-nested JSON-LD, hreflang, bilingual meta hooks, prefetch-on-hover and Core Web Vitals friendly defaults.
Version: 5.0.0
Requires at least: 6.2
Tested up to: 6.7
Requires PHP: 7.4
License: GPLv2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: qq-polaris
Tags: blog, landing-page, vpn, saas, privacy, blue, dark, accessibility-ready
*/

/* =============================================================================
   00 · Polaris Nightfall — design tokens
   --------------------------------------------------------------------------
   蓝色仍是主轴，但语言由"日落地平线（钴蓝+暖琥珀）"切换为
   "极夜星河（深空靛蓝 + 霓虹紫罗兰 + 冰川薄荷青）"——
   整体氛围更冷峻、更具科技感，符合"VPN = 安全 + 速度 + 跨越"的叙事。
   ============================================================================= */

:root {
  /* —— surfaces · 浅底带紫调 —— */
  --qp-bg:           #f4f6fb;
  --qp-bg-alt:       #e8ebf5;
  --qp-surface:      #ffffff;
  --qp-surface-soft: #f7f9ff;
  --qp-surface-deep: #0b1232;

  /* —— ink / typography —— */
  --qp-ink:        #0a1230;
  --qp-ink-soft:   #1a224a;
  --qp-text:       #28324f;
  --qp-text-soft:  #5a657f;
  --qp-text-faint: #8995ae;

  /* —— brand · 电光靛蓝主轴 —— */
  --qp-primary:        #2563eb;
  --qp-primary-strong: #1d4ed8;
  --qp-primary-soft:   #dbeafe;
  --qp-primary-deep:   #1e3a8a;
  --qp-secondary:      #3b82f6;

  /* —— accent · 霓虹紫罗兰（替代原暖琥珀，整体调性转冷）—— */
  --qp-violet:         #7c3aed;
  --qp-violet-strong:  #6d28d9;
  --qp-violet-soft:    #ede9fe;

  /* —— accent · 冰川薄荷青（替代原海岸青绿，更明亮）—— */
  --qp-mint:           #06b6d4;
  --qp-mint-strong:    #0891b2;
  --qp-mint-soft:      #cffafe;

  /* —— signal · 整体语义色 —— */
  --qp-success: #10b981;
  --qp-warn:    #f59e0b;
  --qp-danger:  #ef4444;

  /* —— borders & shadows · 冷色阴影 —— */
  --qp-border:        #d4dbeb;
  --qp-border-strong: #a3afd0;
  --qp-shadow-xs: 0 1px 2px rgba(11, 18, 50, 0.05);
  --qp-shadow-sm: 0 2px 14px rgba(11, 18, 50, 0.08);
  --qp-shadow:    0 18px 44px rgba(11, 18, 50, 0.14);
  --qp-shadow-lg: 0 36px 80px rgba(11, 18, 50, 0.22);
  --qp-glow:      0 0 0 6px rgba(37, 99, 235, 0.10),
                  0 14px 32px rgba(124, 58, 237, 0.24);
  --qp-glow-cool: 0 0 0 6px rgba(37, 99, 235, 0.10),
                  0 14px 32px rgba(6, 182, 212, 0.28);

  /* —— hero · 极夜星河渐变（关键差异点）—— */
  --qp-hero-grad:
    radial-gradient(ellipse 70% 80% at 88% 12%, rgba(124, 58, 237, 0.45), transparent 52%),
    radial-gradient(circle at 14% 88%, rgba(6, 182, 212, 0.32), transparent 55%),
    linear-gradient(165deg, #0a0e2e 0%, #1e1b4b 38%, #312e81 68%, #2563eb 100%);
  --qp-aurora-violet: radial-gradient(circle, rgba(124, 58, 237, 0.55), transparent 65%);
  --qp-aurora-mint:   radial-gradient(circle, rgba(6, 182, 212, 0.45), transparent 65%);

  /* —— radius scale —— */
  --qp-radius-xs: 6px;
  --qp-radius-sm: 10px;
  --qp-radius:    16px;
  --qp-radius-lg: 24px;
  --qp-radius-xl: 32px;
  --qp-pill:      999px;

  /* —— layout —— */
  --qp-container: 1180px;
  --qp-gutter:    24px;

  /* —— motion —— */
  --qp-ease:     cubic-bezier(0.32, 0.72, 0, 1);
  --qp-ease-out: cubic-bezier(0.2, 0.9, 0.3, 1);
  --qp-tx-xs:    0.18s var(--qp-ease);
  --qp-tx-sm:    0.26s var(--qp-ease);
  --qp-tx-md:    0.42s var(--qp-ease);
  --qp-tx-lg:    0.72s var(--qp-ease-out);

  /* —— typography —— */
  --qp-font:
    -apple-system, BlinkMacSystemFont, "Segoe UI Variable", "Segoe UI", Inter,
    Roboto, "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB",
    Helvetica, Arial, sans-serif;
  --qp-font-mono:
    "JetBrains Mono", "Cascadia Code", ui-monospace, "SFMono-Regular",
    "Roboto Mono", monospace;
}

/* =============================================================================
   01 · Reset & base
   ============================================================================= */

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

html {
  scroll-behavior: smooth;
  text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--qp-font);
  font-size: 16px;
  color: var(--qp-text);
  background: var(--qp-bg);
  /* 极夜微光：右上紫罗兰极光、左上冰川冷光、底部电光蓝氤氲 */
  background-image:
    radial-gradient(circle at 96% -4%,  rgba(124, 58, 237, 0.10), transparent 42%),
    radial-gradient(circle at 4% 6%,    rgba(6, 182, 212, 0.10),  transparent 40%),
    radial-gradient(circle at 50% 108%, rgba(37, 99, 235, 0.09),  transparent 50%);
  background-attachment: fixed;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.qp-no-scroll { overflow: hidden; }

a { color: inherit; text-decoration: none; }
a[role="link"] { cursor: pointer; }

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

button { font-family: inherit; }

::selection {
  background: var(--qp-violet);
  color: #fff;
}

:focus-visible {
  outline: 3px solid var(--qp-mint);
  outline-offset: 2px;
}

/* =============================================================================
   02 · Layout primitives
   ============================================================================= */

.qp-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: clip;
}

.qp-container {
  width: min(92%, var(--qp-container));
  margin-inline: auto;
}

.qp-main { flex: 1; }

.qp-section { padding: 96px 0; }
.qp-section--tight { padding-top: 32px; }
.qp-section--alt {
  position: relative;
  background:
    linear-gradient(180deg, rgba(37, 99, 235, 0.04), transparent 55%),
    linear-gradient(180deg, rgba(124, 58, 237, 0.05), transparent 85%);
}

.qp-section-head {
  text-align: center;
  max-width: 820px;
  margin: 0 auto 50px;
}

/* eyebrow · 双段式（左侧短横 + 紫调 chip）替换原"经线条"语言 */
.qp-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--qp-primary-strong);
  background: linear-gradient(90deg, var(--qp-primary-soft), #fff 70%);
  border: 1px solid rgba(37, 99, 235, 0.18);
  border-radius: var(--qp-pill);
  padding: 7px 16px 7px 10px;
  margin: 0 0 16px;
}

.qp-eyebrow::before {
  content: "";
  width: 14px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--qp-primary), var(--qp-violet));
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.18);
}

.qp-section-head h2 {
  margin: 0 0 14px;
  font-size: clamp(1.65rem, 3.2vw, 2.4rem);
  letter-spacing: -0.01em;
  color: var(--qp-ink);
  line-height: 1.22;
}

.qp-section-head p {
  margin: 0;
  color: var(--qp-text-soft);
  font-size: 1.04rem;
}

/* 渐变文字 · 电光蓝 → 冰川青 → 紫罗兰（关键差异：完全冷调） */
.qp-gradient-text {
  background: linear-gradient(95deg, var(--qp-primary) 12%, var(--qp-mint) 55%, var(--qp-violet));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* =============================================================================
   03 · Header & Navigation
   ============================================================================= */

.qp-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255, 255, 255, 0.74);
  backdrop-filter: blur(18px) saturate(170%);
  -webkit-backdrop-filter: blur(18px) saturate(170%);
  border-bottom: 1px solid transparent;
  transition: border-color var(--qp-tx-xs), box-shadow var(--qp-tx-xs),
              background var(--qp-tx-xs);
}

.qp-header.is-pinned {
  border-bottom-color: rgba(37, 99, 235, 0.16);
  box-shadow: var(--qp-shadow-sm);
  background: rgba(255, 255, 255, 0.94);
}

.qp-header__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  min-height: 74px;
}

.qp-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.1rem;
  white-space: nowrap;
  color: var(--qp-ink);
}

/* logo 容器 · 极夜深空 + 右上紫极光 + 左下冰川微光（视觉显著差异）*/
.qp-brand__mark {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: 12px;
  background: linear-gradient(150deg, #0a0e2e 0%, #1e1b4b 50%, #312e81 100%);
  padding: 7px;
  display: grid;
  place-items: center;
  box-shadow: 0 8px 22px rgba(37, 99, 235, 0.32);
  position: relative;
  overflow: hidden;
}

.qp-brand__mark::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 80% 20%, rgba(124, 58, 237, 0.55), transparent 55%),
    radial-gradient(circle at 20% 78%, rgba(6, 182, 212, 0.40), transparent 55%);
  pointer-events: none;
}

.qp-brand__mark img,
.qp-brand__mark svg {
  width: 100%;
  height: 100%;
  position: relative;
  z-index: 1;
}

.qp-brand__name {
  background: linear-gradient(95deg, var(--qp-ink) 30%, var(--qp-primary) 65%, var(--qp-violet));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.qp-nav { display: flex; }

.qp-nav ul,
.qp-mobile-nav ul {
  display: flex;
  gap: 4px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.qp-nav a {
  display: inline-flex;
  align-items: center;
  color: var(--qp-text-soft);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 9px 14px;
  border-radius: var(--qp-radius-sm);
  transition: color var(--qp-tx-xs), background var(--qp-tx-xs);
  position: relative;
}

.qp-nav a:hover,
.qp-nav a:focus-visible,
.qp-nav a[aria-current] {
  color: var(--qp-primary-strong);
  background: var(--qp-primary-soft);
}

/* 当前页指示：底部 2px 紫罗兰 → 冰川青横向渐变线 */
.qp-nav a[aria-current]::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 4px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--qp-violet), var(--qp-mint));
}

.qp-header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.qp-menu-toggle {
  display: none;
  border: 1px solid var(--qp-border);
  background: var(--qp-surface);
  color: var(--qp-ink);
  border-radius: var(--qp-radius-sm);
  font-weight: 600;
  padding: 9px 14px;
  cursor: pointer;
  transition: background var(--qp-tx-xs), border-color var(--qp-tx-xs);
}

.qp-menu-toggle:hover {
  background: var(--qp-primary-soft);
  border-color: var(--qp-primary);
}

/* —— 移动端抽屉 —— */
.qp-mobile-overlay {
  position: fixed;
  inset: 0;
  z-index: 110;
  background: rgba(10, 14, 46, 0.55);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--qp-tx-md);
  backdrop-filter: blur(4px);
}

.qp-mobile-overlay.is-shown {
  opacity: 1;
  pointer-events: auto;
}

.qp-mobile-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: min(82vw, 380px);
  height: 100vh;
  z-index: 120;
  background: var(--qp-surface);
  border-left: 1px solid var(--qp-border);
  box-shadow: -28px 0 70px rgba(10, 14, 46, 0.28);
  transform: translate3d(108%, 0, 0);
  visibility: hidden;
  pointer-events: none;
  will-change: transform;
  transition: transform 0.46s var(--qp-ease),
              visibility 0s linear 0.46s;
  padding: 22px 0;
  touch-action: pan-y;
}

.qp-mobile-panel.is-shown {
  transform: translate3d(0, 0, 0);
  visibility: visible;
  pointer-events: auto;
  transition: transform 0.46s var(--qp-ease),
              visibility 0s linear 0s;
}

.qp-mobile-panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.qp-mobile-close {
  width: 38px;
  height: 38px;
  border-radius: var(--qp-radius-sm);
  border: 1px solid var(--qp-border);
  background: var(--qp-surface);
  color: var(--qp-ink);
  font-size: 1.2rem;
  cursor: pointer;
}

.qp-mobile-nav ul {
  flex-direction: column;
  gap: 8px;
}

.qp-mobile-nav a {
  display: block;
  border: 1px solid var(--qp-border);
  border-radius: var(--qp-radius-sm);
  padding: 13px 15px;
  color: var(--qp-text);
  font-weight: 500;
  transition: background var(--qp-tx-xs), border-color var(--qp-tx-xs);
}

.qp-mobile-nav a:hover {
  background: var(--qp-primary-soft);
  border-color: var(--qp-primary);
  color: var(--qp-primary-strong);
}

.qp-mobile-cta {
  display: flex;
  width: 100%;
  margin-top: 18px;
}

/* =============================================================================
   04 · Buttons（电光蓝 + 紫罗兰双轴）
   ============================================================================= */

.qp-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border-radius: var(--qp-radius-sm);
  border: 1px solid transparent;
  padding: 13px 24px;
  font-weight: 600;
  font-size: 0.97rem;
  letter-spacing: 0.01em;
  transition: transform var(--qp-tx-xs), background var(--qp-tx-xs),
              color var(--qp-tx-xs), border-color var(--qp-tx-xs),
              box-shadow var(--qp-tx-xs);
  cursor: pointer;
  text-align: center;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.qp-btn:focus-visible {
  outline: 3px solid var(--qp-mint);
  outline-offset: 2px;
}

/* 主按钮 · 电光蓝 → 深邃靛蓝；hover 露出右下紫罗兰极光 */
.qp-btn--primary {
  background: linear-gradient(135deg, var(--qp-primary) 0%, var(--qp-primary-strong) 100%);
  color: #fff;
  box-shadow: 0 10px 26px rgba(37, 99, 235, 0.36);
}

.qp-btn--primary::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--qp-primary-strong) 0%, var(--qp-primary-deep) 100%);
  opacity: 0;
  transition: opacity var(--qp-tx-xs);
  z-index: -1;
}

.qp-btn--primary::after {
  content: "";
  position: absolute;
  width: 80%;
  height: 220%;
  right: -25%;
  bottom: -140%;
  background: radial-gradient(ellipse, rgba(124, 58, 237, 0.55), transparent 70%);
  opacity: 0;
  transition: opacity var(--qp-tx-md), transform var(--qp-tx-md);
  z-index: -1;
}

.qp-btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 36px rgba(37, 99, 235, 0.42),
              0 8px 22px rgba(124, 58, 237, 0.32);
}

.qp-btn--primary:hover::before { opacity: 1; }
.qp-btn--primary:hover::after  { opacity: 1; transform: translate(-18%, -12%); }

/* 紫罗兰强调按钮 · 用于二级强 CTA */
.qp-btn--violet {
  background: linear-gradient(135deg, var(--qp-violet) 0%, var(--qp-violet-strong) 100%);
  color: #fff;
  box-shadow: 0 10px 26px rgba(124, 58, 237, 0.38);
}

.qp-btn--violet:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 36px rgba(124, 58, 237, 0.48);
  filter: brightness(1.04);
}

/* 幽灵按钮 · 描边 + hover 电光蓝填充 */
.qp-btn--ghost {
  background: var(--qp-surface);
  color: var(--qp-ink);
  border-color: var(--qp-border);
}

.qp-btn--ghost:hover {
  border-color: var(--qp-primary);
  color: var(--qp-primary-strong);
  background: var(--qp-primary-soft);
  transform: translateY(-1px);
}

/* 暗底反白按钮 · hero 内使用 */
.qp-btn--on-dark {
  background: rgba(255, 255, 255, 0.10);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.32);
  backdrop-filter: blur(6px);
}

.qp-btn--on-dark:hover {
  background: #fff;
  color: var(--qp-primary-strong);
}

.qp-btn--inverted {
  background: #fff;
  color: var(--qp-primary-strong);
}

.qp-btn--inverted:hover {
  background: var(--qp-violet-soft);
  color: var(--qp-violet-strong);
}

.qp-btn--lg {
  padding: 15px 30px;
  font-size: 1.02rem;
  border-radius: var(--qp-radius);
}

/* =============================================================================
   05 · Hero — 极夜星河面板
   ============================================================================= */

.qp-hero { padding: 56px 0 36px; }

.qp-hero__panel {
  position: relative;
  border-radius: var(--qp-radius-xl);
  padding: 72px 60px;
  background: var(--qp-hero-grad);
  color: #fff;
  overflow: hidden;
  box-shadow: var(--qp-shadow-lg);
  isolation: isolate;
}

/* hero 背景：极夜中的星点 + 子午线条 */
.qp-hero__panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1.2px 1.2px at 14% 22%,   rgba(255,255,255,0.9), transparent),
    radial-gradient(1px 1px   at 76% 18%,     rgba(255,255,255,0.7), transparent),
    radial-gradient(1.4px 1.4px at 36% 64%,   rgba(255,255,255,0.85), transparent),
    radial-gradient(1px 1px   at 62% 78%,     rgba(255,255,255,0.6), transparent),
    radial-gradient(1.6px 1.6px at 88% 48%,   rgba(255,255,255,0.85), transparent),
    radial-gradient(1px 1px   at 22% 86%,     rgba(255,255,255,0.55), transparent),
    repeating-linear-gradient(
      115deg,
      rgba(255, 255, 255, 0.035) 0,
      rgba(255, 255, 255, 0.035) 1px,
      transparent 1px,
      transparent 44px
    );
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), rgba(0, 0, 0, 0.5));
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), rgba(0, 0, 0, 0.5));
  pointer-events: none;
}

/* hero 右上"极光"· 紫罗兰光斑 */
.qp-hero__panel::after {
  content: "";
  position: absolute;
  width: 620px;
  height: 620px;
  right: -180px;
  top: -260px;
  border-radius: 50%;
  background: var(--qp-aurora-violet);
  pointer-events: none;
  z-index: 0;
}

/* hero 左下"冰川"· 冰川青光斑（与极光形成对角张力） */
.qp-hero__panel > .qp-glacier {
  position: absolute;
  width: 380px;
  height: 380px;
  left: -130px;
  bottom: -140px;
  border-radius: 50%;
  background: var(--qp-aurora-mint);
  pointer-events: none;
  z-index: 0;
}

/* hero 中部"北极星"光痕（关键视觉差异：闪烁星芒）*/
.qp-hero__panel > .qp-polaris {
  position: absolute;
  width: 110px;
  height: 110px;
  right: 8%;
  top: 14%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.9;
}

.qp-hero__panel > .qp-polaris::before,
.qp-hero__panel > .qp-polaris::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.85) 50%, transparent 100%);
  filter: blur(0.4px);
}

.qp-hero__panel > .qp-polaris::before {
  height: 1.5px;
  top: 50%;
  transform: translateY(-50%);
  box-shadow: 0 0 10px rgba(124, 58, 237, 0.8);
  animation: qpStarHorz 2.6s ease-in-out infinite;
}

.qp-hero__panel > .qp-polaris::after {
  width: 1.5px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(180deg, transparent 0%, rgba(255, 255, 255, 0.85) 50%, transparent 100%);
  box-shadow: 0 0 10px rgba(6, 182, 212, 0.8);
  animation: qpStarVert 2.6s ease-in-out infinite;
}

@keyframes qpStarHorz {
  0%, 100% { opacity: 0.6; transform: translateY(-50%) scaleX(1);   }
  50%      { opacity: 1;   transform: translateY(-50%) scaleX(1.4); }
}

@keyframes qpStarVert {
  0%, 100% { opacity: 0.6; transform: translateX(-50%) scaleY(1);   }
  50%      { opacity: 1;   transform: translateX(-50%) scaleY(1.4); }
}

.qp-hero__grid {
  position: relative;
  display: grid;
  gap: 44px;
  grid-template-columns: 1.15fr 1fr;
  align-items: center;
  z-index: 1;
}

.qp-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #d7c9ff;
  border: 1px solid rgba(255, 255, 255, 0.30);
  border-radius: var(--qp-pill);
  padding: 7px 16px 7px 12px;
  margin: 0 0 22px;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(6px);
}

.qp-hero__eyebrow::before {
  content: "";
  width: 14px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--qp-violet), var(--qp-mint));
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.30);
}

.qp-hero__title {
  margin: 0 0 20px;
  font-size: clamp(2.1rem, 4.8vw, 3.3rem);
  line-height: 1.14;
  letter-spacing: -0.025em;
  font-weight: 800;
}

/* 高亮词 · 紫罗兰极光 → 冰川青（与原暖琥珀完全反相）*/
.qp-hero__title em {
  font-style: normal;
  background: linear-gradient(95deg, #c4b5fd 0%, #a78bfa 30%, #67e8f9 80%, #ffffff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.qp-hero__lead {
  margin: 0 0 32px;
  color: rgba(255, 255, 255, 0.86);
  font-size: 1.08rem;
  max-width: 560px;
  line-height: 1.7;
}

.qp-hero__cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.qp-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.qp-hero__chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--qp-pill);
  padding: 8px 14px;
  font-size: 0.86rem;
  color: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(4px);
}

.qp-hero__chip::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--qp-mint);
  box-shadow: 0 0 0 4px rgba(6, 182, 212, 0.25);
}

/* hero 右侧实时面板 · 毛玻璃 + 紫罗兰→冰川青渐变描边 */
.qp-hero__widget {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(10px);
  border-radius: var(--qp-radius);
  padding: 24px;
  position: relative;
  overflow: hidden;
}

.qp-hero__widget::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg,
    rgba(37, 99, 235, 0.50) 0%,
    rgba(124, 58, 237, 0.60) 50%,
    rgba(6, 182, 212, 0.55) 100%);
  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.qp-hero__widget h2 {
  margin: 0 0 18px;
  font-size: 1.08rem;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
}

.qp-hero__widget h2::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--qp-mint);
  box-shadow: 0 0 0 4px rgba(6, 182, 212, 0.32);
  animation: qpPulse 1.8s ease-in-out infinite;
}

@keyframes qpPulse {
  0%, 100% { transform: scale(1);    opacity: 1;    }
  50%      { transform: scale(1.35); opacity: 0.55; }
}

.qp-metric-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.qp-metric {
  border-radius: var(--qp-radius-sm);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  padding: 14px 16px;
}

.qp-metric small {
  display: block;
  color: rgba(255, 255, 255, 0.74);
  font-size: 0.8rem;
  margin-bottom: 4px;
}

.qp-metric strong {
  display: block;
  font-size: 1.32rem;
  color: #fff;
  font-weight: 800;
}

/* =============================================================================
   06 · Trust strip / 数据条
   ============================================================================= */

.qp-stats-strip { padding: 40px 0 16px; }

.qp-stats-strip__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.qp-stat-tile {
  background: var(--qp-surface);
  border: 1px solid var(--qp-border);
  border-radius: var(--qp-radius);
  padding: 22px 22px;
  text-align: center;
  box-shadow: var(--qp-shadow-sm);
  position: relative;
  overflow: hidden;
  transition: transform var(--qp-tx-sm), box-shadow var(--qp-tx-sm);
}

/* 悬停下方升起一根电光蓝→紫罗兰→冰川青的极光线 */
.qp-stat-tile::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  height: 3px;
  width: 0;
  border-radius: 3px 3px 0 0;
  background: linear-gradient(90deg, var(--qp-primary), var(--qp-violet), var(--qp-mint));
  transition: width var(--qp-tx-md), left var(--qp-tx-md);
}

.qp-stat-tile:hover {
  transform: translateY(-3px);
  box-shadow: var(--qp-shadow);
}

.qp-stat-tile:hover::after {
  width: 70%;
  left: 15%;
}

.qp-stat-tile strong {
  display: block;
  font-size: 1.45rem;
  color: var(--qp-ink);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.qp-stat-tile span {
  color: var(--qp-text-soft);
  font-size: 0.88rem;
}

/* =============================================================================
   07 · Card grids（功能 / 场景 / 帮助 / FAQ / 博客）
   ============================================================================= */

.qp-card-grid {
  display: grid;
  gap: 22px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.qp-cap-card,
.qp-download-card,
.qp-plan-card,
.qp-faq-item,
.qp-blog-card,
.qp-help-card {
  background: var(--qp-surface);
  border: 1px solid var(--qp-border);
  border-radius: var(--qp-radius);
  box-shadow: var(--qp-shadow-xs);
  transition: transform var(--qp-tx-md), border-color var(--qp-tx-xs),
              box-shadow var(--qp-tx-md);
}

.qp-cap-card {
  padding: 28px 26px;
  position: relative;
  overflow: hidden;
}

/* 卡片 hover 左侧探出 3px 电光蓝→紫罗兰→冰川青极光线（关键差异）*/
.qp-cap-card::before {
  content: "";
  position: absolute;
  top: 16px;
  bottom: 16px;
  left: 0;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: linear-gradient(180deg, var(--qp-primary), var(--qp-violet), var(--qp-mint));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--qp-tx-md);
}

.qp-cap-card:hover {
  transform: translateY(-6px);
  border-color: rgba(124, 58, 237, 0.45);
  box-shadow: var(--qp-glow);
}

.qp-cap-card:hover::before { transform: scaleY(1); }

/* 图标容器 · 电光蓝→紫罗兰斜面（替换原蓝紫斜面，调色更冷）*/
.qp-cap-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: var(--qp-radius-sm);
  background: linear-gradient(135deg, var(--qp-primary-soft) 0%, var(--qp-violet-soft) 100%);
  color: var(--qp-primary-strong);
  margin-bottom: 16px;
  font-size: 1.3rem;
  border: 1px solid rgba(124, 58, 237, 0.12);
}

.qp-cap-card h3 {
  margin: 0 0 10px;
  font-size: 1.08rem;
  color: var(--qp-ink);
  font-weight: 700;
}

.qp-cap-card p {
  margin: 0;
  color: var(--qp-text-soft);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* =============================================================================
   08 · Pricing
   ============================================================================= */

.qp-billing-switch {
  width: fit-content;
  margin: 0 auto 32px;
  padding: 5px;
  border: 1px solid var(--qp-border);
  border-radius: var(--qp-pill);
  background: var(--qp-surface);
  display: flex;
  gap: 4px;
  box-shadow: var(--qp-shadow-sm);
}

.qp-billing-switch button {
  border: 0;
  border-radius: var(--qp-pill);
  padding: 10px 20px;
  background: transparent;
  color: var(--qp-text-soft);
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
  transition: background var(--qp-tx-xs), color var(--qp-tx-xs);
}

.qp-billing-switch button.is-active {
  background: linear-gradient(135deg, var(--qp-primary), var(--qp-primary-strong));
  color: #fff;
  box-shadow: 0 6px 14px rgba(37, 99, 235, 0.34);
}

.qp-plans {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.qp-plan-card {
  padding: 30px 28px;
  position: relative;
}

.qp-plan-card:hover {
  transform: translateY(-6px);
  border-color: rgba(124, 58, 237, 0.45);
  box-shadow: var(--qp-shadow);
}

/* 推荐套餐 · 紫罗兰强化（关键差异：原暖琥珀 → 现紫罗兰）*/
.qp-plan-card--featured {
  border-color: var(--qp-violet);
  box-shadow:
    0 22px 56px rgba(124, 58, 237, 0.22),
    0 6px 18px rgba(37, 99, 235, 0.12);
  background:
    linear-gradient(180deg, #ffffff 0%, var(--qp-violet-soft) 75%, var(--qp-primary-soft) 100%);
}

.qp-plan-card--featured::after {
  content: attr(data-ribbon);
  position: absolute;
  top: -14px;
  right: 24px;
  background: linear-gradient(135deg, var(--qp-violet) 0%, var(--qp-violet-strong) 100%);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: var(--qp-pill);
  box-shadow: 0 8px 18px rgba(124, 58, 237, 0.45);
}

.qp-plan-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.qp-plan-card__head h3 {
  margin: 0;
  font-size: 1.2rem;
  color: var(--qp-ink);
}

.qp-plan-badge {
  display: inline-flex;
  align-items: center;
  border-radius: var(--qp-pill);
  background: var(--qp-primary-soft);
  color: var(--qp-primary-strong);
  font-size: 0.74rem;
  font-weight: 700;
  padding: 5px 10px;
  white-space: nowrap;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.qp-plan-badge--accent {
  background: var(--qp-violet-soft);
  color: var(--qp-violet-strong);
}

.qp-plan-card__note {
  margin: 10px 0 0;
  color: var(--qp-text-soft);
  font-size: 0.92rem;
}

.qp-plan-card__price {
  font-size: 2.4rem;
  font-weight: 800;
  margin: 16px 0 6px;
  color: var(--qp-ink);
  letter-spacing: -0.025em;
}

.qp-plan-card__price span {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--qp-text-soft);
  margin-left: 4px;
}

.qp-plan-card ul {
  list-style: none;
  padding: 0;
  margin: 22px 0 26px;
}

.qp-plan-card li {
  margin: 9px 0;
  color: var(--qp-text);
  font-size: 0.94rem;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

/* 列表勾 · 冰川青圆背景（替换原绿底勾）*/
.qp-plan-card li::before {
  content: "✓";
  display: inline-grid;
  place-items: center;
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--qp-mint-soft);
  color: var(--qp-mint-strong);
  font-size: 0.78rem;
  font-weight: 700;
  margin-top: 2px;
}

.qp-plan-card .qp-btn { width: 100%; }

/* —— 套餐对比表 —— */
.qp-compare-wrap {
  overflow-x: auto;
  border: 1px solid var(--qp-border);
  border-radius: var(--qp-radius);
  background: var(--qp-surface);
  box-shadow: var(--qp-shadow-sm);
}

.qp-compare-table {
  width: 100%;
  min-width: 700px;
  border-collapse: collapse;
}

.qp-compare-table th,
.qp-compare-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--qp-border);
  text-align: center;
  color: var(--qp-text);
}

.qp-compare-table tbody tr:last-child td { border-bottom: 0; }
.qp-compare-table tbody tr:hover { background: var(--qp-surface-soft); }

.qp-compare-table th:first-child,
.qp-compare-table td:first-child {
  text-align: left;
  font-weight: 600;
  color: var(--qp-ink);
}

.qp-compare-table thead th {
  background: linear-gradient(90deg, var(--qp-primary-soft), var(--qp-violet-soft));
  color: var(--qp-primary-strong);
  font-size: 0.94rem;
  letter-spacing: 0.02em;
}

/* =============================================================================
   09 · Downloads
   ============================================================================= */

.qp-download-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.qp-download-card {
  padding: 24px 18px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: relative;
  overflow: hidden;
}

/* hover 升起紫罗兰光晕 */
.qp-download-card::after {
  content: "";
  position: absolute;
  inset: auto auto -50% -10%;
  width: 140%;
  height: 80%;
  background: radial-gradient(circle at 50% 50%, rgba(124, 58, 237, 0.32), transparent 70%);
  opacity: 0;
  transition: opacity var(--qp-tx-md), transform var(--qp-tx-md);
  pointer-events: none;
}

.qp-download-card:hover {
  transform: translateY(-5px);
  border-color: rgba(124, 58, 237, 0.45);
  box-shadow: var(--qp-glow);
}

.qp-download-card:hover::after { opacity: 1; transform: translate(0, -8%); }

.qp-download-card__platform {
  display: block;
  font-weight: 700;
  font-size: 1.04rem;
  color: var(--qp-ink);
}

.qp-download-card__hint {
  display: block;
  font-size: 0.86rem;
  color: var(--qp-primary-strong);
}

/* =============================================================================
   10 · Testimonials carousel
   ============================================================================= */

.qp-testimonials { overflow: hidden; }

.qp-testimonials__track {
  display: flex;
  transition: transform 0.48s var(--qp-ease);
  will-change: transform;
}

.qp-testimonial-card {
  background: var(--qp-surface);
  border: 1px solid var(--qp-border);
  border-radius: var(--qp-radius);
  padding: 26px;
  min-width: calc(33.333% - 16px);
  margin-right: 22px;
  box-shadow: var(--qp-shadow-sm);
  display: flex;
  flex-direction: column;
  position: relative;
}

/* 大引号改为紫罗兰软调（替代原暖琥珀软调）*/
.qp-testimonial-card::before {
  content: "\201C";
  position: absolute;
  top: 12px;
  right: 22px;
  font-family: Georgia, serif;
  font-size: 4.4rem;
  line-height: 1;
  color: var(--qp-violet-soft);
  pointer-events: none;
}

.qp-testimonial-card p {
  margin: 0 0 18px;
  color: var(--qp-text);
  line-height: 1.7;
  position: relative;
  z-index: 1;
}

.qp-testimonial-card strong {
  display: block;
  color: var(--qp-text-soft);
  font-size: 0.9rem;
  margin-top: auto;
  font-weight: 600;
}

.qp-carousel-controls {
  margin-top: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.qp-carousel-arrow {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--qp-border);
  background: var(--qp-surface);
  color: var(--qp-ink);
  font-size: 1.1rem;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background var(--qp-tx-xs), color var(--qp-tx-xs),
              border-color var(--qp-tx-xs), transform var(--qp-tx-xs);
}

.qp-carousel-arrow:hover {
  background: linear-gradient(135deg, var(--qp-primary), var(--qp-primary-strong));
  color: #fff;
  border-color: transparent;
  transform: scale(1.06);
}

.qp-carousel-dots {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.qp-carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--qp-pill);
  border: 0;
  background: var(--qp-border-strong);
  cursor: pointer;
  padding: 0;
  transition: background var(--qp-tx-xs), width var(--qp-tx-xs);
}

/* 当前点 · 电光蓝→紫罗兰极光（替换原蓝紫，更接近极光）*/
.qp-carousel-dot.is-active {
  width: 26px;
  background: linear-gradient(90deg, var(--qp-primary), var(--qp-violet));
}

/* =============================================================================
   11 · FAQ accordion
   ============================================================================= */

.qp-faq {
  display: grid;
  gap: 14px;
  max-width: 880px;
  margin: 0 auto;
}

.qp-faq-item {
  padding: 4px 24px;
}

.qp-faq-item.is-open {
  border-color: var(--qp-violet);
  box-shadow: var(--qp-shadow);
}

.qp-faq-question {
  width: 100%;
  border: 0;
  background: transparent;
  color: var(--qp-ink);
  text-align: left;
  font-weight: 700;
  font-size: 1.02rem;
  padding: 20px 0;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.qp-faq-question::after {
  content: "+";
  font-size: 1.5rem;
  line-height: 1;
  color: var(--qp-primary-strong);
  transition: transform var(--qp-tx-xs), color var(--qp-tx-xs);
  flex-shrink: 0;
}

.qp-faq-question[aria-expanded="true"]::after {
  transform: rotate(45deg);
  color: var(--qp-violet-strong);
}

.qp-faq-answer { padding: 0 0 20px; }

.qp-faq-answer p {
  margin: 0;
  color: var(--qp-text-soft);
  line-height: 1.75;
}

/* =============================================================================
   12 · CTA banner
   ============================================================================= */

.qp-cta-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  align-items: center;
  justify-content: space-between;
  background: var(--qp-hero-grad);
  color: #fff;
  border-radius: var(--qp-radius-xl);
  padding: 44px 50px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--qp-shadow-lg);
}

.qp-cta-strip::before {
  content: "";
  position: absolute;
  width: 480px;
  height: 480px;
  right: -140px;
  top: -200px;
  border-radius: 50%;
  background: var(--qp-aurora-violet);
  pointer-events: none;
}

.qp-cta-strip::after {
  content: "";
  position: absolute;
  width: 320px;
  height: 320px;
  left: -90px;
  bottom: -120px;
  border-radius: 50%;
  background: var(--qp-aurora-mint);
  pointer-events: none;
}

.qp-cta-strip h2 {
  margin: 0 0 8px;
  font-size: clamp(1.45rem, 2.6vw, 2rem);
  position: relative;
  z-index: 1;
}

.qp-cta-strip p {
  margin: 0;
  color: rgba(255, 255, 255, 0.84);
  position: relative;
  z-index: 1;
}

.qp-cta-strip__actions {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  z-index: 1;
}

/* =============================================================================
   13 · Inner page banner + prose
   ============================================================================= */

.qp-page-banner {
  padding: 70px 0 50px;
  text-align: center;
  background:
    radial-gradient(ellipse at 50% 0%,   rgba(37, 99, 235, 0.10), transparent 60%),
    radial-gradient(ellipse at 50% 100%, rgba(124, 58, 237, 0.10), transparent 70%),
    var(--qp-surface);
  border-bottom: 1px solid var(--qp-border);
}

.qp-page-banner h1 {
  margin: 0 0 14px;
  font-size: clamp(1.85rem, 3.8vw, 2.7rem);
  color: var(--qp-ink);
  letter-spacing: -0.015em;
  line-height: 1.22;
}

.qp-page-banner p {
  margin: 0 auto;
  color: var(--qp-text-soft);
  max-width: 660px;
  line-height: 1.7;
}

.qp-page-body { padding: 64px 0 100px; }

.qp-prose {
  max-width: 840px;
  margin: 0 auto;
  background: var(--qp-surface);
  border: 1px solid var(--qp-border);
  border-radius: var(--qp-radius-lg);
  padding: 44px 48px;
  box-shadow: var(--qp-shadow-sm);
}

/* H2 · 左侧竖条：电光蓝 → 紫罗兰（替代原蓝→琥珀）*/
.qp-prose h2 {
  font-size: 1.25rem;
  margin: 38px 0 14px;
  color: var(--qp-ink);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--qp-border);
  display: flex;
  align-items: center;
  gap: 10px;
}

.qp-prose h2::before {
  content: "";
  width: 4px;
  height: 18px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--qp-primary), var(--qp-violet));
}

.qp-prose h2:first-child { margin-top: 0; }

.qp-prose p {
  color: var(--qp-text);
  line-height: 1.85;
  margin: 0 0 14px;
}

.qp-prose ul,
.qp-prose ol {
  padding-left: 24px;
  margin: 12px 0 18px;
}

.qp-prose li {
  color: var(--qp-text);
  line-height: 1.8;
  margin: 7px 0;
}

.qp-prose a {
  color: var(--qp-primary-strong);
  text-decoration: underline;
  text-decoration-color: rgba(37, 99, 235, 0.40);
  text-underline-offset: 3px;
  transition: color var(--qp-tx-xs);
}

.qp-prose a:hover { color: var(--qp-violet-strong); }

/* 提示框 · 电光蓝软背景 + 紫罗兰左边框 */
.qp-prose__callout {
  background: linear-gradient(90deg, var(--qp-primary-soft), #fff 80%);
  border-left: 4px solid var(--qp-violet);
  border-radius: var(--qp-radius-sm);
  padding: 18px 22px;
  margin: 20px 0;
  color: var(--qp-ink);
  font-size: 0.96rem;
  line-height: 1.7;
}

/* =============================================================================
   14 · Help center
   ============================================================================= */

.qp-help-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  margin-bottom: 64px;
}

.qp-help-card { padding: 28px 26px; }

.qp-help-card:hover {
  transform: translateY(-5px);
  border-color: rgba(124, 58, 237, 0.45);
  box-shadow: var(--qp-shadow);
}

.qp-help-card__icon {
  display: inline-grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: var(--qp-radius-sm);
  background: linear-gradient(135deg, var(--qp-primary-soft) 0%, var(--qp-violet-soft) 100%);
  color: var(--qp-primary-strong);
  font-size: 1.35rem;
  margin-bottom: 14px;
  border: 1px solid rgba(124, 58, 237, 0.12);
}

.qp-help-card h3 {
  margin: 0 0 8px;
  font-size: 1.08rem;
  color: var(--qp-ink);
}

.qp-help-card p {
  margin: 0 0 16px;
  color: var(--qp-text-soft);
  font-size: 0.94rem;
  line-height: 1.65;
}

.qp-help-card__links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 6px;
}

.qp-help-card__links a {
  color: var(--qp-primary-strong);
  font-size: 0.92rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color var(--qp-tx-xs);
}

.qp-help-card__links a::before {
  content: "\203A";
  font-size: 1rem;
}

.qp-help-card__links a:hover { color: var(--qp-violet-strong); }

.qp-help-section,
.qp-help-article { scroll-margin-top: 96px; }

.qp-help-section {
  padding: 52px 0 4px;
  border-top: 1px solid var(--qp-border);
}

.qp-help-section__head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 34px;
}

.qp-help-section__head .qp-help-card__icon { margin: 0; }

.qp-help-section__head h2 {
  margin: 0;
  font-size: 1.5rem;
  color: var(--qp-ink);
}

.qp-help-articles {
  display: grid;
  gap: 26px;
}

.qp-help-article {
  background: var(--qp-surface);
  border: 1px solid var(--qp-border);
  border-radius: var(--qp-radius);
  padding: 28px 30px;
  box-shadow: var(--qp-shadow-xs);
}

.qp-help-article h3 {
  font-size: 1.08rem;
  margin: 0 0 18px;
  color: var(--qp-ink);
  display: flex;
  align-items: center;
  gap: 10px;
}

.qp-help-article h3::before {
  content: "";
  display: inline-block;
  flex-shrink: 0;
  width: 4px;
  height: 18px;
  background: linear-gradient(180deg, var(--qp-primary), var(--qp-violet));
  border-radius: 2px;
}

.qp-step-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 14px;
  counter-reset: qp-step;
}

.qp-step-list li {
  display: flex;
  gap: 14px;
  color: var(--qp-text);
  line-height: 1.7;
  font-size: 0.96rem;
}

/* 步骤序号 · 电光蓝渐变 + 紫罗兰外环 */
.qp-step-num {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--qp-primary), var(--qp-primary-strong));
  color: #fff;
  font-size: 0.78rem;
  font-weight: 700;
  display: grid;
  place-items: center;
  margin-top: 1px;
  box-shadow:
    0 4px 10px rgba(37, 99, 235, 0.32),
    0 0 0 3px rgba(124, 58, 237, 0.18);
}

.qp-bullets {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.qp-bullets li {
  padding-left: 22px;
  position: relative;
  color: var(--qp-text);
  line-height: 1.7;
  font-size: 0.96rem;
}

.qp-bullets li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.7em;
  width: 8px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--qp-primary), var(--qp-violet));
}

/* 提示卡 · 冰川青调（替换原 success+冰青双层）*/
.qp-tip {
  background: linear-gradient(90deg, var(--qp-mint-soft), #fff 90%);
  border-left: 4px solid var(--qp-mint);
  border-radius: var(--qp-radius-sm);
  padding: 14px 18px;
  color: var(--qp-text);
  font-size: 0.92rem;
  line-height: 1.65;
  margin-top: 16px;
}

.qp-tip strong { color: var(--qp-mint-strong); }

.qp-platform-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.qp-help-cta {
  background: var(--qp-hero-grad);
  color: #fff;
  border-radius: var(--qp-radius-xl);
  padding: 34px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  margin-top: 52px;
  box-shadow: var(--qp-shadow-lg);
  position: relative;
  overflow: hidden;
}

.qp-help-cta::after {
  content: "";
  position: absolute;
  width: 360px;
  height: 360px;
  right: -110px;
  top: -160px;
  border-radius: 50%;
  background: var(--qp-aurora-violet);
  pointer-events: none;
}

.qp-help-cta > * { position: relative; z-index: 1; }

.qp-help-cta h3 {
  margin: 0 0 8px;
  font-size: 1.28rem;
}

.qp-help-cta p {
  margin: 0;
  color: rgba(255, 255, 255, 0.85);
}

/* =============================================================================
   15 · Related reading（内容 SEO 内链）+ tag cloud
   ============================================================================= */

.qp-related {
  margin-top: 60px;
  padding-top: 36px;
  border-top: 1px solid var(--qp-border);
}

.qp-related h2 {
  margin: 0 0 24px;
  font-size: 1.25rem;
  color: var(--qp-ink);
  display: flex;
  align-items: center;
  gap: 10px;
}

.qp-related h2::before {
  content: "";
  width: 4px;
  height: 18px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--qp-primary), var(--qp-violet));
}

.qp-related__grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.qp-related__item {
  display: block;
  padding: 16px 18px;
  background: var(--qp-surface);
  border: 1px solid var(--qp-border);
  border-radius: var(--qp-radius-sm);
  color: var(--qp-text);
  font-size: 0.95rem;
  line-height: 1.6;
  transition: border-color var(--qp-tx-xs), color var(--qp-tx-xs),
              transform var(--qp-tx-xs);
}

.qp-related__item:hover {
  border-color: var(--qp-violet);
  color: var(--qp-violet-strong);
  transform: translateY(-2px);
}

.qp-related__item small {
  display: block;
  color: var(--qp-text-faint);
  font-size: 0.8rem;
  margin-bottom: 4px;
}

/* —— 标签云（SEO 内链）—— */
.qp-tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.qp-tag-cloud a {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  background: var(--qp-primary-soft);
  color: var(--qp-primary-strong);
  border-radius: var(--qp-pill);
  font-size: 0.82rem;
  font-weight: 500;
  transition: background var(--qp-tx-xs), color var(--qp-tx-xs),
              transform var(--qp-tx-xs);
}

.qp-tag-cloud a:hover {
  background: var(--qp-violet);
  color: #fff;
  transform: translateY(-1px);
}

/* =============================================================================
   16 · Footer
   ============================================================================= */

.qp-footer {
  margin-top: 88px;
  background: var(--qp-surface);
  border-top: 1px solid var(--qp-border);
  color: var(--qp-text-soft);
  position: relative;
}

/* 页脚顶部一道极细的极光线（电光蓝→紫罗兰→冰川青，象征"全球网络"）*/
.qp-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg,
    transparent 0%,
    var(--qp-primary) 25%,
    var(--qp-violet) 50%,
    var(--qp-mint) 75%,
    transparent 100%);
  opacity: 0.45;
}

.qp-footer__inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 36px;
  padding: 48px 0 32px;
}

.qp-footer__col h4 {
  margin: 0 0 14px;
  color: var(--qp-ink);
  font-size: 0.95rem;
  font-weight: 700;
}

.qp-footer__col ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 8px;
}

.qp-footer__col a {
  color: var(--qp-text-soft);
  font-size: 0.92rem;
  transition: color var(--qp-tx-xs);
}

.qp-footer__col a:hover { color: var(--qp-primary-strong); }

.qp-footer__brand-text {
  color: var(--qp-text-soft);
  font-size: 0.92rem;
  margin: 12px 0 0;
  line-height: 1.7;
}

.qp-footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  padding: 20px 0 24px;
  border-top: 1px solid var(--qp-border);
  font-size: 0.88rem;
  flex-wrap: wrap;
}

.qp-footer__bottom a {
  color: var(--qp-text-soft);
  transition: color var(--qp-tx-xs);
}

.qp-footer__bottom a:hover { color: var(--qp-primary-strong); }

.qp-footer__friends {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  font-size: 0.84rem;
  color: var(--qp-text-faint);
}

.qp-footer__friends a { color: var(--qp-text-soft); }
.qp-footer__friends a:hover { color: var(--qp-primary-strong); }

/* =============================================================================
   17 · Skip link, breadcrumb & utilities
   ============================================================================= */

.qp-skip {
  position: absolute;
  top: -100%;
  left: 16px;
  z-index: 9999;
  background: linear-gradient(135deg, var(--qp-primary), var(--qp-primary-strong));
  color: #fff;
  padding: 11px 20px;
  border-radius: 0 0 var(--qp-radius-sm) var(--qp-radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  transition: top var(--qp-tx-xs);
}

.qp-skip:focus {
  top: 0;
  outline: 3px solid var(--qp-mint);
  outline-offset: 2px;
}

.qp-sr {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
  white-space: nowrap;
}

[data-qp-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s var(--qp-ease), transform 0.6s var(--qp-ease);
}

[data-qp-reveal].is-shown {
  opacity: 1;
  transform: translateY(0);
}

/* —— breadcrumb —— */
.qp-breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
  margin: 0 0 28px;
  font-size: 0.86rem;
  color: var(--qp-text-soft);
}

.qp-breadcrumb a {
  color: var(--qp-text-soft);
  transition: color var(--qp-tx-xs);
}

.qp-breadcrumb a:hover { color: var(--qp-primary-strong); }

.qp-breadcrumb__sep {
  margin: 0 6px;
  opacity: 0.55;
  color: var(--qp-text-faint);
}

.qp-breadcrumb [aria-current="page"] {
  color: var(--qp-ink);
  font-weight: 500;
}

/* =============================================================================
   18 · Blog
   ============================================================================= */

.qp-blog-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 26px;
  margin-top: 36px;
}

.qp-blog-card {
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.qp-blog-card:hover {
  transform: translateY(-6px);
  border-color: rgba(124, 58, 237, 0.45);
  box-shadow: var(--qp-shadow);
}

.qp-blog-card__thumb {
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--qp-bg-alt);
}

.qp-blog-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s var(--qp-ease);
}

.qp-blog-card:hover .qp-blog-card__thumb img { transform: scale(1.06); }

.qp-blog-card__body {
  padding: 24px 24px 26px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.qp-blog-card__meta {
  margin: 0 0 10px;
  font-size: 0.82rem;
  color: var(--qp-text-faint);
}

.qp-blog-card__meta a { color: var(--qp-primary-strong); }

.qp-blog-card__title {
  margin: 0 0 10px;
  font-size: 1.08rem;
  line-height: 1.45;
  color: var(--qp-ink);
}

.qp-blog-card__title a {
  color: inherit;
  transition: color var(--qp-tx-xs);
}

.qp-blog-card__title a:hover { color: var(--qp-primary-strong); }

.qp-blog-card__excerpt {
  margin: 0 0 16px;
  color: var(--qp-text-soft);
  font-size: 0.93rem;
  line-height: 1.7;
  flex: 1;
}

.qp-blog-card__link {
  color: var(--qp-primary-strong);
  font-size: 0.9rem;
  font-weight: 600;
  align-self: flex-start;
}

.qp-blog-card__link:hover { color: var(--qp-violet-strong); }

.qp-blog-archive {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
  margin-top: 36px;
}

.qp-blog-archive .qp-blog-card { flex-direction: row; }

.qp-blog-archive .qp-blog-card__thumb {
  width: 220px;
  flex-shrink: 0;
  aspect-ratio: auto;
}

.qp-pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 56px;
  flex-wrap: wrap;
}

.qp-pagination a,
.qp-pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  height: 42px;
  padding: 0 12px;
  border-radius: var(--qp-radius-sm);
  border: 1px solid var(--qp-border);
  background: var(--qp-surface);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--qp-text-soft);
  transition: background var(--qp-tx-xs), border-color var(--qp-tx-xs),
              color var(--qp-tx-xs);
}

.qp-pagination a:hover {
  border-color: var(--qp-primary);
  color: var(--qp-primary-strong);
  background: var(--qp-primary-soft);
}

.qp-pagination .current {
  background: linear-gradient(135deg, var(--qp-primary), var(--qp-primary-strong));
  border-color: transparent;
  color: #fff;
}

/* =============================================================================
   19 · Single post（阅读时长 / 作者署名 / TOC / TL;DR）
   ============================================================================= */

.qp-single { padding: 64px 0 96px; }

.qp-post-header {
  max-width: 840px;
  margin: 0 0 36px;
}

.qp-post-title {
  font-size: clamp(1.7rem, 3.6vw, 2.55rem);
  line-height: 1.32;
  margin: 0 0 18px;
  color: var(--qp-ink);
  letter-spacing: -0.015em;
}

.qp-post-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  font-size: 0.88rem;
  color: var(--qp-text-soft);
}

.qp-post-meta a { color: var(--qp-primary-strong); }
.qp-post-meta__sep { opacity: 0.4; }

/* 阅读时长徽章 · 紫罗兰调（替代暖琥珀）*/
.qp-read-time {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  background: var(--qp-violet-soft);
  color: var(--qp-violet-strong);
  border-radius: var(--qp-pill);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.qp-read-time::before {
  content: "\23F1";
  font-size: 0.85rem;
}

/* TL;DR 摘要 · 让 Google Featured Snippet 直接抓取 */
.qp-tldr {
  background: linear-gradient(90deg, var(--qp-primary-soft), #fff 90%);
  border-left: 4px solid var(--qp-primary);
  border-radius: var(--qp-radius-sm);
  padding: 16px 22px;
  margin: 0 0 28px;
  color: var(--qp-ink);
  font-size: 0.96rem;
  line-height: 1.7;
}

.qp-tldr strong {
  display: inline-block;
  color: var(--qp-primary-strong);
  font-weight: 700;
  margin-right: 6px;
}

.qp-post-thumbnail {
  margin: 0 0 36px;
  border-radius: var(--qp-radius-lg);
  overflow: hidden;
  max-height: 540px;
  box-shadow: var(--qp-shadow);
}

.qp-post-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.qp-post-content { max-width: 840px; }

.qp-post-content h2,
.qp-post-content h3 {
  color: var(--qp-ink);
  margin-top: 1.85em;
}

.qp-post-content p {
  color: var(--qp-text);
  line-height: 1.85;
}

.qp-post-content a {
  color: var(--qp-primary-strong);
  text-decoration: underline;
  text-decoration-color: rgba(37, 99, 235, 0.30);
  text-underline-offset: 3px;
}

.qp-post-content img {
  border-radius: var(--qp-radius);
  margin: 26px 0;
}

.qp-post-content blockquote {
  border-left: 4px solid var(--qp-violet);
  background: linear-gradient(90deg, var(--qp-violet-soft), transparent 80%);
  margin: 26px 0;
  padding: 18px 24px;
  border-radius: var(--qp-radius-sm);
  color: var(--qp-ink);
}

/* TOC · 自动从 H2 提取（content SEO 长尾锚点）*/
.qp-toc {
  background: var(--qp-surface-soft);
  border: 1px solid var(--qp-border);
  border-left: 4px solid var(--qp-violet);
  border-radius: var(--qp-radius-sm);
  padding: 16px 22px;
  margin: 0 0 28px;
  font-size: 0.93rem;
}

.qp-toc strong {
  display: block;
  color: var(--qp-ink);
  margin-bottom: 8px;
  font-weight: 700;
}

.qp-toc ol {
  margin: 0;
  padding-left: 20px;
}

.qp-toc a { color: var(--qp-primary-strong); }

/* 作者署名 · 提升 E-E-A-T */
.qp-author-bio {
  margin-top: 40px;
  padding: 22px 24px;
  background: var(--qp-surface-soft);
  border: 1px solid var(--qp-border);
  border-radius: var(--qp-radius);
  display: flex;
  gap: 18px;
  align-items: flex-start;
}

.qp-author-bio__mark {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--qp-primary), var(--qp-violet));
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 700;
  font-size: 1.4rem;
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.22);
}

.qp-author-bio__body { flex: 1; }

.qp-author-bio__name {
  display: block;
  color: var(--qp-ink);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 2px;
}

.qp-author-bio__role {
  display: block;
  color: var(--qp-text-soft);
  font-size: 0.85rem;
  margin-bottom: 8px;
}

.qp-author-bio__desc {
  margin: 0;
  color: var(--qp-text);
  font-size: 0.92rem;
  line-height: 1.7;
}

.qp-post-nav {
  display: flex;
  gap: 18px;
  margin-top: 64px;
  padding-top: 32px;
  border-top: 1px solid var(--qp-border);
}

.qp-post-nav__prev,
.qp-post-nav__next {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
  background: var(--qp-surface);
  border: 1px solid var(--qp-border);
  border-radius: var(--qp-radius);
  padding: 20px 24px;
  transition: border-color var(--qp-tx-xs), transform var(--qp-tx-xs),
              box-shadow var(--qp-tx-xs);
  box-shadow: var(--qp-shadow-xs);
}

.qp-post-nav__next {
  text-align: right;
  align-items: flex-end;
}

.qp-post-nav__prev:hover,
.qp-post-nav__next:hover {
  border-color: var(--qp-violet);
  transform: translateY(-4px);
  box-shadow: var(--qp-shadow);
}

.qp-post-nav__label {
  font-size: 0.78rem;
  color: var(--qp-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
}

.qp-post-nav__title {
  font-size: 0.98rem;
  color: var(--qp-ink);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* =============================================================================
   20 · Responsive breakpoints
   ============================================================================= */

@media (max-width: 1024px) {
  .qp-hero__grid,
  .qp-plans { grid-template-columns: 1fr; }

  .qp-card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .qp-download-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .qp-stats-strip__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .qp-help-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .qp-related__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .qp-cta-strip {
    flex-direction: column;
    align-items: flex-start;
    padding: 32px;
  }

  .qp-hero__panel { padding: 48px 32px; }
  .qp-footer__inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .qp-section { padding: 64px 0; }

  .qp-nav,
  .qp-header__actions .qp-btn { display: none; }

  .qp-menu-toggle { display: inline-flex; }

  .qp-card-grid,
  .qp-download-grid,
  .qp-stats-strip__grid,
  .qp-help-grid,
  .qp-platform-grid,
  .qp-related__grid { grid-template-columns: 1fr; }

  .qp-testimonial-card {
    min-width: 100%;
    margin-right: 0;
  }

  .qp-compare-table { min-width: 580px; }

  .qp-footer__inner {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .qp-footer__bottom {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }

  .qp-hero__panel { padding: 40px 24px; }
  .qp-prose { padding: 30px 24px; }

  .qp-help-cta {
    flex-direction: column;
    align-items: flex-start;
    padding: 30px;
  }

  .qp-post-nav { flex-direction: column; }

  .qp-post-nav__next {
    text-align: left;
    align-items: flex-start;
  }
}

@media (max-width: 600px) {
  .qp-blog-grid,
  .qp-blog-archive { grid-template-columns: 1fr; }

  .qp-blog-archive .qp-blog-card { flex-direction: column; }

  .qp-blog-archive .qp-blog-card__thumb {
    width: 100%;
    aspect-ratio: 16 / 9;
  }

  .qp-author-bio { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* =============================================================================
   21 · Color-scheme hint
   ============================================================================= */

@media (prefers-color-scheme: dark) {
  body { color-scheme: light; }
}