:root {
  /* 核心提夫尼蓝及其质感变体 */
  --bg: #f0f7f7; 
  --bg2: #f8fafc;
  --card: rgba(255, 255, 255, 0.88);
  --line: rgba(129, 216, 208, 0.25); /* 带有提夫尼蓝底色的线条 */
  --text: #2d3748; /* 稍深一点的灰，更有高级感 */
  --muted: #718096;
  --primary: #0abab5; /* 标准提夫尼蓝 */
  --primary2: #7bcbd4; /* 浅提夫尼蓝，用于渐变 */
  --accent: #1e3a8a; /* 深湖蓝，用于增加视觉锚点 */
  --success: #0d9488;
  --warning: #d97706;
  --shadow: 0 18px 55px rgba(10, 186, 181, 0.12); /* 带有主色调投影的阴影 */
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 14% 0%, rgba(10, 186, 181, 0.15), transparent 28%),
    radial-gradient(circle at 88% 12%, rgba(123, 203, 212, 0.12), transparent 24%),
    linear-gradient(180deg, var(--bg) 0%, #f7fbff 45%, #ffffff 100%);
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(10, 186, 181, .05) 1px, transparent 1px), linear-gradient(90deg, rgba(10, 186, 181, .05) 1px, transparent 1px);
  background-size: 44px 44px;
  opacity: .5;
}

.page {
  width: min(1180px, 100%);
  margin: 0 auto;
  padding: 32px 18px 56px;
  position: relative;
}

.hero {
  min-height: 260px;
  display: block;
  margin-bottom: 14px;
}
.hero-copy, .card, .step, .privacy-strip {
  border: 1px solid var(--line);
  background: var(--card);
  backdrop-filter: blur(20px); /* 增加模糊度提升质感 */
  box-shadow: var(--shadow);
}
.hero-copy {
  border-radius: 34px;
  padding: 44px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 260px;
}
.eyebrow {
  width: fit-content;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(10, 186, 181, .12); /* 提夫尼蓝浅背景 */
  color: var(--primary);
  font-weight: 800;
  font-size: 14px;
  margin-bottom: 20px;
}
h1 { margin: 0 0 14px; font-size: clamp(34px, 5vw, 58px); letter-spacing: -1.8px; line-height: 1.05; color: #1a202c; }
h2 { margin: 0; font-size: 22px; letter-spacing: -0.4px; }
h3 { margin: 28px 0 14px; font-size: 18px; }
p { line-height: 1.75; }
.hero-copy p { margin: 0; color: #4a5568; font-size: 17px; max-width: 720px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
.primary-link, .ghost-link {
  text-decoration: none;
  border-radius: 999px;
  padding: 13px 18px;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.primary-link { 
  background: linear-gradient(135deg, var(--primary), var(--primary2)); 
  color: #fff; 
  box-shadow: 0 12px 24px rgba(10, 186, 181, 0.3); /* 调整投影颜色 */
}
.ghost-link { color: var(--text); border: 1px solid var(--line); background: rgba(255,255,255,.66); }

.privacy-strip {
  border-radius: 20px;
  padding: 14px 16px;
  margin-bottom: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
}
.privacy-strip-main {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #4a5568;
  font-size: 14px;
  line-height: 1.6;
}
.privacy-strip-main strong { color: var(--text); }
.privacy-mini-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 999px;
  background: rgba(13, 148, 136, .12);
  font-size: 15px;
  flex: 0 0 auto;
}
.privacy-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
  flex: 0 0 auto;
}
.privacy-tags span {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(10, 186, 181, .1);
  color: #4a5568;
  font-size: 12px;
  white-space: nowrap;
}

.grid-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.78fr) minmax(0, 1.22fr);
  gap: 20px;
  align-items: start;
}
.left-col { display: grid; gap: 20px; }
.card {
  border-radius: 28px;
  padding: 26px;
  margin-bottom: 20px;
}
.main-card { min-height: 100%; }
.card-title { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  height: 34px;
  padding: 0 10px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(10, 186, 181, .15), rgba(123, 203, 212, .15));
  color: var(--primary);
  font-weight: 900;
  font-size: 13px;
}

.radio-grid, .check-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}
.choice, .check-grid label {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 15px 16px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(10, 186, 181, 0.15);
  border-radius: 18px;
  cursor: pointer;
  transition: all .22s ease;
}
.choice:hover, .check-grid label:hover { 
  transform: translateY(-2px); 
  border-color: var(--primary); 
  background: #fff;
  box-shadow: 0 8px 20px rgba(10, 186, 181, 0.1);
}
input { transform: translateY(1px); accent-color: var(--primary); }
.hint { color: var(--muted); font-size: 14px; margin: 14px 0 0; }
code { background: #e6f6f5; color: #06746f; padding: 2px 7px; border-radius: 8px; }

.tab-buttons { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 18px; }
button {
  border: 1px solid rgba(10, 186, 181, 0.2);
  background: rgba(255,255,255,.92);
  color: var(--text);
  border-radius: 14px;
  padding: 12px 16px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 700;
  transition: all .2s ease;
}
button:hover { transform: translateY(-1px); box-shadow: 0 10px 22px rgba(10, 186, 181, .12); }
button.primary {
  border: none;
  background: linear-gradient(135deg, var(--primary), var(--primary2));
  color: #fff;
  font-weight: 900;
  box-shadow: 0 12px 24px rgba(10, 186, 181, .25);
}
.tab.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.panel { display: none; }
.panel.active { display: block; }
.file-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 210px;
  border: 2px dashed rgba(10, 186, 181, 0.3);
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(240, 249, 249, .96), rgba(255, 255, 255, .76));
  cursor: pointer;
  text-align: center;
  padding: 24px;
  margin-bottom: 14px;
}
.custom-file-picker {
  position: relative;
  overflow: hidden;
  transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease, background .22s ease;
}
.custom-file-picker:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
  background: linear-gradient(180deg, #ffffff, #effbfb);
  box-shadow: 0 16px 32px rgba(10, 186, 181, .14);
}
.file-input-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}
.file-icon { font-size: 46px; margin-bottom: 8px; color: var(--primary); }
.file-title { font-size: 18px; font-weight: 900; margin-bottom: 6px; }
.file-cta {
  margin: 16px 0 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 999px;
  color: #ffffff;
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary), var(--primary2));
  box-shadow: 0 12px 24px rgba(10, 186, 181, .24);
}
.file-box small { color: var(--muted); }
.file-name {
  color: #344054;
  margin: 0 0 14px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 11px 14px;
  border-radius: 16px;
  border: 1px solid rgba(10, 186, 181, .16);
  background: rgba(255, 255, 255, .72);
  font-size: 14px;
  word-break: break-all;
}
.file-name:empty::before {
  content: "尚未选择文件";
  color: var(--muted);
}
textarea {
  width: 100%;
  min-height: 300px;
  border: 1px solid rgba(10, 186, 181, 0.2);
  border-radius: 20px;
  padding: 16px;
  font-size: 14px;
  line-height: 1.7;
  resize: vertical;
  background: rgba(255,255,255,.92);
}
textarea:focus { outline: 4px solid rgba(10, 186, 181, .1); border-color: var(--primary); }
.hidden { display: none; }
.status pre {
  white-space: pre-wrap;
  background: #f0f9f9;
  color: #1a5e5a;
  border-radius: 18px;
  padding: 18px;
  border: 1px solid rgba(10, 186, 181, 0.2);
  overflow: auto;
}
.section-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.actions { display: flex; flex-wrap: wrap; gap: 8px; }
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}
.stats div {
  background: linear-gradient(180deg, #ffffff, #f0f9f9);
  border: 1px solid rgba(10, 186, 181, 0.15);
  border-radius: 20px;
  padding: 16px;
}
.stats span { display: block; color: var(--muted); font-size: 13px; margin-bottom: 8px; }
.stats strong { font-size: 30px; letter-spacing: -0.8px; color: var(--primary); }
.notice {
  padding: 14px 16px;
  background: #f0fdfa;
  border: 1px solid #ccfbf1;
  border-radius: 16px;
  color: var(--success);
}
.table-wrap { overflow-x: auto; border: 1px solid rgba(10, 186, 181, 0.15); border-radius: 18px; background: #fff; }
table { width: 100%; border-collapse: collapse; min-width: 860px; }
th, td {
  padding: 13px 10px;
  border-bottom: 1px solid #f0f7f7;
  text-align: center;
  font-size: 14px;
}
th { position: sticky; top: 0; background: #f2fafa; color: #4a5568; font-weight: 900; }
tbody tr:hover td { background: #f9fdfd; }
tbody tr:last-child td { border-bottom: none; }
td strong { color: var(--primary); }
.review-list { display: grid; gap: 14px; }
.review-item {
  border: 1px solid rgba(10, 186, 181, 0.15);
  border-radius: 20px;
  padding: 18px;
  background: #fbfcff;
}
.review-item h4 { margin: 0 0 10px; color: var(--accent); }
.review-meta { color: #4a5568; line-height: 1.8; font-size: 14px; }
.review-options {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}
.review-options label {
  padding: 11px 13px;
  background: #fff;
  border: 1px solid rgba(10, 186, 181, 0.2);
  border-radius: 14px;
  cursor: pointer;
  transition: all 0.2s;
}
.review-options label:hover { border-color: var(--primary); background: #f0f9f9; }
.footer {
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  margin-top: 26px;
}
.footer p { margin: 4px 0; }
@media (max-width: 880px) {
  .grid-layout { grid-template-columns: 1fr; }
  .hero-copy { padding: 30px; }
  .privacy-strip { align-items: flex-start; flex-direction: column; }
  .privacy-tags { justify-content: flex-start; }
}
@media (max-width: 640px) {
  .page { padding: 18px 12px 40px; }
  .hero-copy, .card { border-radius: 22px; padding: 20px; }
  h1 { font-size: 31px; }
  .actions, .hero-actions { width: 100%; }
  .actions button, .primary-link, .ghost-link, button.primary { width: 100%; }
}

/* 移动端优化：减少 03 到 04 之间的空白 */
@media (max-width: 640px) {
  .main-card {
    min-height: auto;
  }

  .card {
    margin-bottom: 14px;
  }

  .file-box {
    min-height: 150px;
    padding: 18px;
    margin-bottom: 10px;
  }

  .file-icon {
    font-size: 34px;
    margin-bottom: 4px;
  }

  .file-title {
    font-size: 16px;
    margin-bottom: 4px;
  }

  .file-cta {
    margin: 10px 0 8px;
    padding: 10px 18px;
  }

  .file-name {
    min-height: auto;
    margin-bottom: 10px;
    padding: 9px 12px;
  }

  #statusCard {
    margin-top: -4px;
    margin-bottom: 14px;
    padding: 16px;
  }

  #statusCard .card-title {
    margin-bottom: 10px;
  }

  #statusText {
    margin: 0;
    padding: 10px 12px;
    max-height: 72px;
    overflow: auto;
    font-size: 12px;
    line-height: 1.45;
  }

  .progress-box {
    margin-top: 10px;
  }

  .progress-track {
    height: 8px;
  }

  .progress-meta {
    margin-top: 6px;
    font-size: 12px;
  }

  #resultCard {
    scroll-margin-top: 12px;
  }
}