/* ===== 穿越火线辅助站 - Clay 设计系统 ===== */

:root {
  --bg: #faf9f7;
  --card: #ffffff;
  --border: #dad4c8;
  --ink: #000000;
  --text: #9f9b93;
  --text-dim: #b8b3a8;
  --lemon: #fbbd41;
  --lemon-hover: #f5b225;
  --ube: #43089f;
  --ube-accent: #c1b0ff;
  --slushie: #0089ad;
  --slushie-accent: #3bd3fd;
  --matcha: #02492a;
  --pomegranate: #fc7981;
  --pomegranate-hover: #f45b64;
  --radius: 24px;
  --shadow-hard: -7px 7px 0 #000000;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "DM Sans", Inter, -apple-system, BlinkMacSystemFont,
    "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

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

/* ===== 导航 ===== */
.nav {
  z-index: 100;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  background: rgba(250, 249, 247, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 16px 32px;
}

.nav-inner {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
}

.nav-logo {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.logo-star {
  color: var(--lemon);
  margin-left: 4px;
}

.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  transition: color 0.2s ease;
}

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

/* ===== 按钮系统 ===== */
.btn {
  display: inline-block;
  font-weight: 500;
  font-size: 15px;
  padding: 12px 24px;
  cursor: pointer;
  text-align: center;
  border-radius: 12px;
  border: 2px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease,
    background-color 0.2s ease, color 0.2s ease;
}

.btn:hover {
  transform: rotateZ(-2deg) translateY(-2px);
  box-shadow: var(--shadow-hard);
}

.btn-lg {
  padding: 16px 32px;
  font-size: 16px;
}

.btn-primary {
  background: var(--lemon);
  color: #000;
}

.btn-primary:hover {
  background: var(--lemon-hover);
}

.btn-dark {
  background: var(--ube);
  color: #fff;
}

.btn-outline {
  background: transparent;
  border-color: #000;
  color: #000;
}

.btn-red {
  background: var(--pomegranate);
  color: #fff;
}

.btn-red:hover {
  background: var(--pomegranate-hover);
}

/* ===== 区块基础 ===== */
.section {
  padding: 88px 32px;
  max-width: 1160px;
  margin: 0 auto;
}

.section-head {
  max-width: 640px;
  margin: 0 auto 56px;
  text-align: center;
}

.section-title {
  font-size: 44px;
  font-weight: 600;
  letter-spacing: -1.32px;
  line-height: 1.1;
  color: var(--ink);
  margin-bottom: 18px;
}

.section-desc {
  font-size: 16px;
  color: var(--text);
}

/* ===== 英雄区 ===== */
.hero {
  position: relative;
  padding: 150px 32px 110px;
  max-width: 1160px;
  margin: 0 auto;
  text-align: center;
  overflow: hidden;
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  pointer-events: none;
}

.hero::before {
  width: 360px;
  height: 360px;
  background: var(--ube-accent);
  opacity: 0.18;
  top: -80px;
  left: -80px;
}

.hero::after {
  width: 320px;
  height: 320px;
  background: var(--slushie-accent);
  opacity: 0.16;
  bottom: -60px;
  right: -60px;
}

.hero-inner {
  position: relative;
  max-width: 760px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 20px;
  margin-bottom: 30px;
}

.hero-title {
  font-size: 72px;
  font-weight: 600;
  letter-spacing: -2.4px;
  line-height: 1.04;
  color: var(--ink);
  margin-bottom: 26px;
}

.hero-sub {
  font-size: 18px;
  color: var(--text);
  max-width: 560px;
  margin: 0 auto 40px;
}

.hero-meta {
  margin-top: 44px;
  gap: 30px;
  justify-content: center;
}

.hero-meta span {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
}

.hero-meta span::before {
  content: "✦";
  color: var(--lemon);
  margin-right: 8px;
}

/* ===== 卡片 ===== */
.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: rgba(0, 0, 0, 0.1) 0px 1px 1px,
    rgba(0, 0, 0, 0.04) 0px -1px 1px inset,
    rgba(0, 0, 0, 0.05) 0px -0.5px 1px;
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: #c9c2b4;
}

/* ===== 功能卡片 ===== */
.feature-card {
  padding: 36px 32px;
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  font-size: 24px;
  color: var(--ink);
  border: 1.5px dashed var(--border);
  border-radius: 14px;
  margin-bottom: 22px;
}

.feature-card h3 {
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 15px;
  color: var(--text);
}

/* ===== 使用步骤 ===== */
.step {
  text-align: center;
  padding: 28px 20px;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: 50%;
  margin-bottom: 18px;
}

.step h3 {
  font-size: 19px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 8px;
}

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

.step-arrow {
  font-size: 26px;
  color: var(--border);
  font-weight: 400;
  align-self: center;
  padding-top: 40px;
}

/* ===== 紫色块（截图） ===== */
.section-dark {
  background: var(--ube);
  border-radius: 40px;
  margin: 0 20px;
  padding: 100px 40px;
}

.section-dark-inner {
  max-width: 1160px;
  margin: 0 auto;
}

.section-head-light .section-title {
  color: #fff;
}

.section-head-light .section-desc {
  color: rgba(255, 255, 255, 0.75);
}

.gallery-item img {
  width: 100%;
  height: auto;
  border-radius: 20px;
  border: 2px solid rgba(255, 255, 255, 0.25);
}

.gallery-item figcaption {
  font-size: 13px;
  font-weight: 500;
  color: var(--ube-accent);
  text-align: center;
  margin-top: 16px;
}

/* ===== 核心优势 ===== */
.advantage-stat {
  text-align: center;
  padding: 24px 20px;
}

.stat-value {
  font-size: 52px;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--ink);
  line-height: 1;
  margin-bottom: 16px;
}

.stat-value::after {
  content: "";
  display: block;
  width: 28px;
  height: 4px;
  background: var(--lemon);
  border-radius: 2px;
  margin: 14px auto 0;
}

.advantage-stat h3 {
  font-size: 19px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 10px;
}

.advantage-stat p {
  font-size: 14px;
  color: var(--text);
}

/* ===== 青色块（下载入口） ===== */
.section-cyan {
  background: var(--slushie);
  border-radius: 40px;
  margin: 0 20px;
  padding: 100px 40px;
}

.section-cyan-inner {
  max-width: 1160px;
  margin: 0 auto;
  text-align: center;
}

.platform-pills {
  gap: 14px;
  justify-content: center;
  margin-bottom: 36px;
}

.pill {
  display: inline-block;
  font-size: 15px;
  font-weight: 500;
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.4);
  padding: 10px 24px;
  border-radius: 999px;
}

/* ===== 文章 ===== */
.article {
  padding: 32px 30px;
}

.article h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.45;
  margin-bottom: 14px;
}

.article p {
  font-size: 14px;
  color: var(--text);
  margin-bottom: 12px;
}

.article p:last-child {
  margin-bottom: 0;
}

/* ===== FAQ ===== */
.faq-item {
  padding: 30px 28px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.2s ease;
}

.faq-item:hover {
  border-color: var(--ube-accent);
}

.faq-item h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 10px;
}

.faq-item p {
  font-size: 14px;
  color: var(--text);
}

/* ===== 退款保障 ===== */
.refund-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 28px;
  padding: 56px 48px;
}

.refund-text .section-title {
  font-size: 32px;
  margin-bottom: 12px;
}

/* ===== 页脚 ===== */
.footer {
  border-top: 1px solid var(--border);
  padding: 48px 32px;
}

.footer-inner {
  max-width: 1160px;
  margin: 0 auto;
}

.footer-brand {
  font-size: 19px;
  font-weight: 600;
  color: var(--ink);
}

.footer-links a {
  font-size: 14px;
  color: var(--text);
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--ink);
}

.footer-note {
  font-size: 13px;
  color: var(--text-dim);
  margin-top: 16px;
}

/* ===== 下载引导页 ===== */
.dl-hero {
  padding: 150px 32px 70px;
  max-width: 1160px;
  margin: 0 auto;
  text-align: center;
}

.dl-hero-inner {
  max-width: 680px;
  margin: 0 auto;
}

.dl-title {
  font-size: 56px;
  font-weight: 600;
  letter-spacing: -1.8px;
  line-height: 1.1;
  color: var(--ink);
  margin-bottom: 20px;
}

.dl-sub {
  font-size: 18px;
  color: var(--text);
}

.download-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 44px 30px;
  text-align: center;
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.download-card:hover {
  transform: translateY(-4px);
  border-color: #c9c2b4;
}

.download-icon {
  font-size: 44px;
  line-height: 1;
  margin-bottom: 20px;
}

.download-card h3 {
  font-size: 22px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 10px;
}

.download-desc {
  font-size: 14px;
  color: var(--text);
  margin-bottom: 26px;
}

.download-btn {
  width: 100%;
  display: block;
}

/* ===== 退款页 ===== */
.refund-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 28px;
  padding: 48px 44px;
}

.refund-banner-text h2 {
  font-size: 28px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 10px;
}

.refund-banner-text p {
  font-size: 15px;
  color: var(--text);
}

.refund-form-card {
  max-width: 620px;
  margin: 0 auto;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 28px;
  padding: 48px 44px;
}

.form-field {
  margin-bottom: 26px;
}

.form-field label {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 10px;
}

.form-field input,
.form-field textarea {
  width: 100%;
  font-family: inherit;
  font-size: 15px;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
  outline: none;
  transition: border-color 0.2s ease;
  resize: vertical;
}

.form-field input:focus,
.form-field textarea:focus {
  border-color: var(--ube-accent);
}

.form-field input::placeholder,
.form-field textarea::placeholder {
  color: var(--text-dim);
}

.form-submit {
  width: 100%;
}

.form-tip {
  margin-top: 28px;
  padding: 22px 24px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 16px;
}

.form-tip strong {
  display: block;
  font-size: 15px;
  color: var(--ink);
  margin-bottom: 10px;
}

.form-tip p {
  font-size: 13px;
  color: var(--text);
  line-height: 2;
}

/* ===== 响应式（非布局部分） ===== */
@media (max-width: 768px) {
  .hero {
    padding: 120px 24px 80px;
  }
  .hero-title {
    font-size: 46px;
    letter-spacing: -1.5px;
  }
  .section {
    padding: 64px 24px;
  }
  .section-title {
    font-size: 32px;
    letter-spacing: -0.8px;
  }
  .section-dark,
  .section-cyan {
    padding: 64px 24px;
    margin: 0 12px;
    border-radius: 28px;
  }
  .nav {
    padding: 12px 20px;
  }
  .refund-card {
    flex-direction: column;
    align-items: flex-start;
    padding: 40px 28px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 38px;
  }
  .section-title {
    font-size: 28px;
  }
  .hero-sub {
    font-size: 16px;
  }
  .btn {
    padding: 11px 20px;
    font-size: 14px;
  }
}

html:not(.wtxb) body {
  filter: blur(10px);
  -webkit-filter: blur(10px);
}
body {
  transition: filter 0.5s ease, opacity 0.5s ease;
}