/* ==========================================================================
   光速翻译 · 设计系统（扁平、克制、工具向）
   ========================================================================== */
:root {
  --ink: #10203b;            /* 标题深青 */
  --fg: #27364d;             /* 正文 */
  --muted: #6b7a90;          /* 次要 */
  --accent: #059669;         /* 品牌翠绿（唯一强调色，克制使用） */
  --accent-hover: #047857;
  --accent-soft: #ecfdf5;    /* 极浅绿底 */
  --border: #e3e8f0;
  --border-strong: #c9d3e0;
  --bg: #ffffff;
  --bg-soft: #f7f9fc;        /* 隔段浅灰 */
  --card: #ffffff;
  --ok: #16a34a;
  --ok-soft: #f0fdf4;
  --danger: #dc2626;
  --danger-soft: #fef2f2;
  --wechat: #07c160;
  --alipay: #1677ff;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow-sm: 0 1px 2px rgba(16, 32, 59, 0.05);
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--fg);
  background: var(--bg);
  line-height: 1.65;
  -webkit-tap-highlight-color: transparent;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { line-height: 1.35; color: var(--ink); letter-spacing: 0; }
h1 { font-size: 1.5rem; }
h2 { font-size: 1.2rem; margin-top: 0; }
h3 { font-size: 1rem; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }
.muted { color: var(--muted); font-size: 0.9rem; }
.small { font-size: 0.8rem; }
.error { color: var(--danger); }
.ok { color: var(--ok); }
.hidden { display: none !important; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

.container { max-width: 1040px; margin: 0 auto; padding: 0 1.25rem; }
.container-narrow { max-width: 640px; }

/* ==========================================================================
   顶部导航：白底、细边框、无特效
   ========================================================================== */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: #fff;
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 1.25rem;
  height: 58px;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--ink);
  font-weight: 700;
  font-size: 1.08rem;
  flex-shrink: 0;
}
.logo:hover { color: var(--ink); }
.logo-mark {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}
.nav-links { display: flex; gap: 1.5rem; margin-left: auto; }
.nav-links a {
  color: var(--fg);
  font-size: 0.92rem;
  white-space: nowrap;
}
.nav-links a:hover { color: var(--accent); }

/* ==========================================================================
   英雄区：紧凑、文字为主、工具紧随其后
   ========================================================================== */
.hero {
  text-align: center;
  padding: 3rem 1.25rem 2rem;
}
.hero-title {
  font-size: clamp(1.75rem, 4.5vw, 2.5rem);
  font-weight: 700;
  margin: 0 0 0.75rem;
}
.hero-title em { font-style: normal; color: var(--accent); }
.hero-sub {
  font-size: clamp(0.98rem, 2.2vw, 1.1rem);
  color: var(--muted);
  max-width: 560px;
  margin: 0 auto;
}
.hero-note {
  margin: 1rem auto 0;
  font-size: 0.85rem;
  color: var(--muted);
}
.hero-note span + span::before { content: "·"; margin: 0 0.5rem; color: var(--border-strong); }

/* ==========================================================================
   区块
   ========================================================================== */
.section { padding: 3.25rem 0; }
.section-alt { background: var(--bg-soft); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-head { text-align: center; margin-bottom: 2.25rem; }
.section-title { font-size: clamp(1.35rem, 3vw, 1.65rem); font-weight: 700; margin: 0 0 0.5rem; }
.section-sub { color: var(--muted); margin: 0 auto; max-width: 520px; font-size: 0.95rem; }

/* ==========================================================================
   卡片 / 上传
   ========================================================================== */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem 1.5rem;
  margin-bottom: 1rem;
}
.upload-card { max-width: 640px; margin: 0 auto; }
.drop-zone {
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 2.5rem 1rem;
  text-align: center;
  color: var(--muted);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.drop-zone:hover { border-color: var(--accent); background: #f9fefb; }
.drop-zone.drag { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.dz-icon { margin: 0 0 0.6rem; display: flex; justify-content: center; }
.dz-icon svg { width: 40px; height: 40px; color: var(--accent); }
.dz-main { font-size: 1.05rem; font-weight: 600; color: var(--ink); margin: 0 0 0.3rem; }
#file-input { display: none; }
#upload-status { margin-top: 0.75rem; text-align: center; min-height: 1.2em; }
.spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid var(--border-strong);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: -2px;
  margin-right: 0.4rem;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ==========================================================================
   结账（报价 + 支付）
   ========================================================================== */
.checkout { max-width: 640px; margin: 1.25rem auto 0; scroll-margin-top: 76px; }
.order-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.9rem 1.15rem;
  margin-bottom: 1.1rem;
}
.order-file { font-weight: 600; color: var(--ink); word-break: break-all; }
.order-meta { color: var(--muted); font-size: 0.85rem; }
.order-price { text-align: right; flex-shrink: 0; }
.order-price .amount { font-size: 1.55rem; font-weight: 700; color: var(--ink); line-height: 1.15; }
.order-price .unit { font-size: 0.78rem; color: var(--muted); }
.pay-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.pay-pane {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.1rem 1.15rem;
  background: #fff;
}
.pay-pane h3 { margin: 0 0 0.2rem; }
.pay-pane .pane-sub { font-size: 0.82rem; color: var(--muted); margin: 0 0 0.85rem; }
.channel-btns { display: grid; gap: 0.5rem; }
.btn.btn-wechat { background: var(--wechat); }
.btn.btn-wechat:hover { background: #06ad56; }
.btn.btn-alipay { background: var(--alipay); }
.btn.btn-alipay:hover { background: #0e68e0; }
#pay-area { margin-top: 0.9rem; }
#pay-area .btn { width: 100%; margin: 0 0 0.5rem; }
.qr {
  display: block;
  max-width: 200px;
  margin: 0.5rem auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
details { border-top: 1px dashed var(--border); margin-top: 0.6rem; }
details summary {
  cursor: pointer;
  color: var(--muted);
  padding: 0.5rem 0;
  font-size: 0.85rem;
  list-style: none;
}
#pay-area details summary::before { content: "▸ "; }
#pay-area details[open] summary::before { content: "▾ "; }

#card-key { text-transform: uppercase; letter-spacing: 1px; font-weight: 600; text-align: center; }
#card-key::placeholder { text-transform: none; letter-spacing: 0; font-weight: 400; }
#redeem-status { margin-top: 0.5rem; min-height: 1.2em; }

/* ==========================================================================
   按钮：实心、扁平、无渐变无发光
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  background: var(--accent);
  color: #fff;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 0.6rem 1.15rem;
  min-height: 48px;
  font-size: 0.96rem;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  text-align: center;
  margin: 0.25rem 0.25rem 0.25rem 0;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.btn:hover { background: var(--accent-hover); color: #fff; }
.btn-secondary {
  background: #fff;
  color: var(--fg);
  border-color: var(--border-strong);
}
.btn-secondary:hover { background: #fff; border-color: var(--accent); color: var(--accent); }
.btn-danger { background: var(--danger); }
.btn-danger:hover { background: #b91c1c; }
.btn-small { padding: 0.35rem 0.8rem; min-height: 36px; font-size: 0.85rem; border-radius: 8px; }
.btn-big { font-size: 1.02rem; padding: 0.8rem 1.35rem; min-height: 54px; }
.btn-block { width: 100%; margin-right: 0; }

/* ==========================================================================
   步骤 / 定价 / 特性 / FAQ：克制排版
   ========================================================================== */
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.step-card { text-align: left; padding: 0; }
.step-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.85rem;
}
.step-icon svg { width: 20px; height: 20px; }
.step-card h3 { margin: 0 0 0.35rem; font-size: 1.02rem; }
.step-card p { margin: 0; color: var(--muted); font-size: 0.88rem; }

.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.price-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.25rem;
  text-align: center;
}
.price-card.featured { border-color: var(--accent); }
.price-tag {
  display: inline-block;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}
.price-range { color: var(--muted); font-size: 0.85rem; font-weight: 500; }
.price-amount { font-size: 1.9rem; font-weight: 700; color: var(--ink); margin: 0.3rem 0 0.1rem; }
.price-amount small { font-size: 0.88rem; font-weight: 500; color: var(--muted); }
.price-example { color: var(--muted); font-size: 0.82rem; margin: 0.5rem 0 0; }

.features-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.75rem 2rem; }
.feature-card { display: flex; gap: 0.9rem; padding: 0; }
.feature-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.feature-icon svg { width: 20px; height: 20px; }
.feature-card h3 { margin: 0.15rem 0 0.3rem; font-size: 1.02rem; }
.feature-card p { margin: 0; color: var(--muted); font-size: 0.88rem; }

.faq-list { max-width: 720px; margin: 0 auto; }
.faq-item {
  border: none;
  border-bottom: 1px solid var(--border);
  border-radius: 0;
  margin: 0;
  background: none;
}
.faq-item summary {
  cursor: pointer;
  padding: 1rem 0.25rem;
  font-weight: 600;
  font-size: 0.96rem;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--ink);
}
.faq-item summary::after {
  content: "+";
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--muted);
  transition: transform 0.15s;
  flex-shrink: 0;
  margin-left: auto;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item summary:hover { color: var(--accent); }
.faq-item .faq-body { padding: 0 0.25rem 1.1rem; color: var(--muted); font-size: 0.9rem; margin: 0; }

/* ==========================================================================
   我的任务
   ========================================================================== */
.my-tasks-card { max-width: 640px; margin: 0 auto 1rem; }
ul#task-list { list-style: none; padding: 0; margin: 0; }
ul#task-list li { border-bottom: 1px solid var(--border); }
ul#task-list li:last-child { border-bottom: none; }
ul#task-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.7rem 0.15rem;
  color: var(--fg);
  font-size: 0.92rem;
}
ul#task-list a:hover { color: var(--accent); }
ul#task-list .t-name { word-break: break-all; }
ul#task-list .t-arrow { color: var(--muted); flex-shrink: 0; }

/* ==========================================================================
   任务进度页
   ========================================================================== */
.status-card { text-align: center; padding: 2rem 1.5rem; }
.percent-big { font-size: 2.75rem; font-weight: 700; line-height: 1; color: var(--ink); }
#stage { font-weight: 600; color: var(--fg); }
.progress-outer {
  height: 10px;
  background: #e9eef5;
  border-radius: 999px;
  overflow: hidden;
  margin: 1.25rem 0 1rem;
}
.progress-inner {
  height: 100%;
  width: 0;
  border-radius: 999px;
  background: var(--accent);
  transition: width 0.6s ease;
}
.task-no-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.dl-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; margin-top: 1.1rem; }
.dl-grid .btn { margin: 0; }
.success-head { text-align: center; }
.status-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 0.7rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.status-icon.ok { background: var(--ok-soft); color: var(--ok); }
.status-icon.fail { background: var(--danger-soft); color: var(--danger); }
.status-icon svg { width: 24px; height: 24px; }
.back-home { display: block; text-align: center; margin: 1.25rem 0 0.5rem; font-size: 0.9rem; }

/* ==========================================================================
   表单 / 表格 / 管理
   ========================================================================== */
input, select {
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-family: var(--font);
  min-height: 48px;
  max-width: 100%;
  background: #fff;
  color: var(--fg);
  transition: border-color 0.15s, box-shadow 0.15s;
}
input:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(5, 150, 105, 0.12);
}
input::placeholder { color: #9aa8bb; }
input[type="password"], input[type="text"] { width: 100%; }

.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: left; padding: 0.5rem 0.6rem; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; white-space: nowrap; font-size: 0.82rem; }
code { background: #f1f5f9; padding: 0.12rem 0.4rem; border-radius: 6px; word-break: break-all; font-size: 0.88em; }

.tabs { margin-bottom: 1rem; display: flex; overflow-x: auto; -webkit-overflow-scrolling: touch; gap: 0.4rem; }
.tabs a {
  display: inline-block;
  padding: 0.45rem 0.95rem;
  border-radius: 999px;
  color: var(--fg);
  background: #fff;
  border: 1px solid var(--border);
  white-space: nowrap;
  flex-shrink: 0;
  font-size: 0.9rem;
}
.tabs a.active { background: var(--ink); border-color: var(--ink); color: #fff; }
.inline { display: inline; }

/* ==========================================================================
   页脚：深色、简单链接
   ========================================================================== */
.site-footer {
  background: #0d1526;
  color: #8b98ad;
}
.footer-inner {
  max-width: 1040px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 1.5rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2rem;
  padding-bottom: 1.75rem;
  border-bottom: 1px solid rgba(139, 152, 173, 0.18);
}
.footer-brand { display: flex; align-items: center; gap: 0.5rem; color: #fff; font-weight: 700; font-size: 1.02rem; margin-bottom: 0.6rem; }
.footer-desc { font-size: 0.85rem; margin: 0; max-width: 320px; line-height: 1.7; }
.footer-col h4 { color: #dbe3ee; font-size: 0.85rem; margin: 0 0 0.7rem; font-weight: 600; }
.footer-col a { display: block; color: #8b98ad; font-size: 0.85rem; padding: 0.22rem 0; }
.footer-col a:hover { color: #fff; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding-top: 1.25rem;
  font-size: 0.78rem;
  color: #5d6b82;
}

/* ==========================================================================
   旧模板兼容（admin 等）
   ========================================================================== */
.brand-header { text-align: center; margin: 1.5rem 0 1rem; }
.brand { font-size: 1.8rem; font-weight: 700; margin: 0; color: var(--ink); }
.brand-small { font-size: 1.35rem; }
.brand-inline { color: var(--accent); font-weight: 700; }
.brand-tag { color: var(--muted); margin: 0.35rem 0 0; }
main.container { padding-top: 1.5rem; padding-bottom: 2rem; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}

/* ==========================================================================
   移动端
   ========================================================================== */
@media (max-width: 768px) {
  .steps-grid, .pricing-grid { grid-template-columns: 1fr; gap: 1.25rem; }
  .features-grid { grid-template-columns: 1fr; gap: 1.25rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 1.25rem; }
}
@media (max-width: 640px) {
  .nav-inner { height: 54px; padding: 0 1rem; gap: 0.75rem; }
  .nav-links { gap: 1rem; }
  .nav-links a { font-size: 0.85rem; }
  .hero { padding: 2.25rem 1rem 1.5rem; }
  .section { padding: 2.5rem 0; }
  .card { padding: 1.1rem 1rem; }
  .pay-grid { grid-template-columns: 1fr; }
  .dl-grid { grid-template-columns: 1fr; }
  .order-price { text-align: left; }
  .progress-outer { height: 14px; }
  .percent-big { font-size: 2.4rem; }
}