/* 随易 落地页 v2 —— 侧栏 + 大字 hero + 柔色卡片 + 流线背景
   蓝调清流，参考 zhiming 模板布局 */

:root {
  /* 色板 */
  --bg-base:   #f5faff;
  --bg-warm:   #ffffff;
  --side-bg:   rgba(255, 255, 255, 0.85);
  --side-line: rgba(15, 23, 42, 0.06);

  --primary-50:  #f0f7ff;
  --primary-100: #dbeafe;
  --primary-200: #bfdbfe;
  --primary-400: #60a5fa;
  --primary-500: #3b82f6;
  --primary-600: #2563eb;
  --primary-700: #1d4ed8;

  --cyan-100:   #cffafe;
  --indigo-50:  #eef2ff;
  --teal-100:   #ccfbf1;
  --sky-100:    #e0f2fe;

  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;

  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC",
           "STSong", serif;
  --sans:  -apple-system, BlinkMacSystemFont, "PingFang SC",
           "Microsoft YaHei", "Segoe UI", Roboto, system-ui, sans-serif;

  --shadow-card: 0 18px 60px rgba(15, 23, 42, 0.07);
  --shadow-soft: 0 4px 24px rgba(59, 130, 246, 0.10);
  --shadow-side: 4px 0 32px rgba(15, 23, 42, 0.04);
}

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

html, body {
  font-family: var(--sans);
  color: var(--slate-700);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
  font-size: 16px;
}

body {
  min-height: 100vh;
  background: var(--bg-base);
}

/* 流线背景：SVG 内联，铺在内容区 ───────────────────────────────────── */
.bg-curves {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1600 900' preserveAspectRatio='xMidYMid slice'><defs><linearGradient id='g' x1='0' y1='0' x2='1' y2='1'><stop offset='0' stop-color='%23bfdbfe' stop-opacity='0.35'/><stop offset='1' stop-color='%23a5f3fc' stop-opacity='0.10'/></linearGradient></defs><rect width='1600' height='900' fill='%23f5faff'/><path d='M-50 200 Q 400 150 800 280 T 1700 220' stroke='url(%23g)' stroke-width='1.5' fill='none'/><path d='M-50 320 Q 400 280 800 410 T 1700 360' stroke='url(%23g)' stroke-width='1.5' fill='none'/><path d='M-50 470 Q 400 430 800 560 T 1700 510' stroke='url(%23g)' stroke-width='1.5' fill='none'/><path d='M-50 640 Q 400 600 800 730 T 1700 670' stroke='url(%23g)' stroke-width='1.5' fill='none'/><path d='M-50 800 Q 400 770 800 880 T 1700 830' stroke='url(%23g)' stroke-width='1.5' fill='none'/></svg>");
  background-size: cover;
  opacity: 0.85;
}

/* ── shell 主结构 ──────────────────────────────────────────────────── */

.shell {
  position: relative;
  /* 不要写 z-index：一旦写了数字，shell 会形成层叠上下文，
     里面的 sidebar 即使 z-index:9998 也会被 z-index:5 的遮罩盖住。
     去掉之后 sidebar 的 z-index 才能相对 body 生效。 */
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}
@media (max-width: 900px) {
  .shell { grid-template-columns: 1fr; }
}

/* ── 侧栏 ────────────────────────────────────────────────────────── */

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  background: var(--side-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-right: 1px solid var(--side-line);
  box-shadow: var(--shadow-side);
  padding: 1.4rem 1rem 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
@media (max-width: 900px) {
  /* 默认收起：sidebar 改成 fixed 顶栏（脱离 shell 的层叠环境，
     这样开抽屉后可以盖住遮罩与内容） */
  .sidebar {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: auto;
    z-index: 30;            /* 必须高于 .nav-backdrop (5) */
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 1rem;
    gap: 0.6rem;
    border-right: 0;
    border-bottom: 1px solid var(--side-line);
    box-shadow: 0 4px 18px rgba(15, 23, 42, 0.04);
    overflow: visible;
  }
  /* sidebar 是 fixed 后，正文要让出顶栏高度 */
  .content { padding-top: 4.5rem; }
  .sidebar::-webkit-scrollbar { display: none; }
  /* 移动端 brand 缩小一档 */
  .sidebar .brand {
    flex: 1;
    min-width: 0;
    padding: 0;
  }
  .sidebar .brand .name {
    font-size: 1rem;
    line-height: 1.1;
    white-space: nowrap;
  }
  .sidebar .brand .sub {
    display: none;
  }
  .sidebar .brand img {
    width: 30px;
    height: 30px;
  }

  /* 默认隐藏所有 nav-section / 分组标题 / 底部 CTA —— 抽屉里才显示 */
  .sidebar .nav-section,
  .sidebar .side-section-title,
  .sidebar .side-cta {
    display: none;
  }

  /* 汉堡按钮（仅移动端显示） */
  .nav-burger {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    border: 1px solid var(--side-line);
    background: rgba(255, 255, 255, 0.8);
    color: var(--slate-700);
    cursor: pointer;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background .15s, color .15s;
  }
  .nav-burger:hover { background: #fff; color: var(--primary-700); }
  .nav-burger .ic-close { display: none; }
  .sidebar.open .nav-burger .ic-open  { display: none; }
  .sidebar.open .nav-burger .ic-close { display: block; }

  /* 打开抽屉：sidebar 已经是 fixed 了，这里展开 nav；增加 bg + 限高滚动 */
  .sidebar.open {
    flex-direction: column;
    align-items: stretch;
    border-radius: 0 0 18px 18px;
    background: rgba(255, 255, 255, 0.97);
    max-height: 92vh;
    overflow-y: auto;
  }
  .sidebar.open .nav-section,
  .sidebar.open .side-section-title,
  .sidebar.open .side-cta {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
    padding: 0 0 .5rem;
  }
  .sidebar.open .side-section-title {
    padding: .8rem 0.85rem 0.3rem;
  }
  .sidebar.open .nav-item {
    padding: 0.8rem 0.85rem;
    font-size: 0.95rem;
  }
  .sidebar.open .nav-item .ico { display: inline-block; }
  .sidebar.open .side-cta-btn {
    margin-top: .5rem;
    padding: 0.85rem 1rem;
    font-size: 0.92rem;
  }
  /* 让汉堡按钮停留在右上角 */
  .sidebar.open .nav-burger {
    position: absolute;
    top: 0.6rem;
    right: 1rem;
  }

  /* 半透明遮罩：默认完全 display:none，避免任何 pointer-events 误拦 */
  .nav-backdrop {
    position: fixed;
    inset: 0;
    z-index: 5;
    background: rgba(15, 23, 42, 0.40);
    display: none;
    animation: nav-backdrop-in .18s ease-out;
  }
  body.nav-locked { overflow: hidden; }
  body.nav-locked .nav-backdrop { display: block; }
  @keyframes nav-backdrop-in { from { opacity: 0; } to { opacity: 1; } }
}

/* 桌面端隐藏汉堡 / 遮罩 */
@media (min-width: 901px) {
  .nav-burger { display: none !important; }
  .nav-backdrop { display: none !important; }
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.4rem 0.6rem;
}
.brand img {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.20);
}
.brand .name {
  font-family: var(--serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--slate-900);
  letter-spacing: 0.02em;
}
.brand .sub {
  display: block;
  margin-top: 1px;
  font-family: var(--sans);
  font-size: 0.7rem;
  color: var(--slate-500);
  letter-spacing: 0.05em;
  font-weight: 400;
}

.nav-section {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
@media (max-width: 900px) {
  .nav-section {
    flex-direction: row;
    flex: 1;
    gap: 0.2rem;
  }
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.7rem 0.85rem;
  border-radius: 12px;
  color: var(--slate-600);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: background 0.18s, color 0.18s;
  white-space: nowrap;
}
.nav-item:hover {
  background: rgba(59, 130, 246, 0.08);
  color: var(--primary-700);
}
.nav-item.active {
  background: linear-gradient(135deg,
    rgba(59, 130, 246, 0.15),
    rgba(6, 182, 212, 0.15));
  color: var(--primary-700);
  font-weight: 600;
}
.nav-item .ico {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.side-section-title {
  margin: 0.8rem 0.85rem 0.3rem;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--slate-400);
  text-transform: uppercase;
  font-weight: 600;
}
@media (max-width: 900px) {
  .side-section-title { display: none; }
}

/* === 临时隐藏：在线排盘入口（首批仅上线"下载 App"） ===
   等八字 / 排盘等线上版本就绪后，删除本块即可恢复 */
.sidebar .side-section-title,
.sidebar .side-section-title + .nav-section {
  display: none !important;
}

.side-cta {
  margin-top: auto;
}
@media (max-width: 900px) {
  .side-cta { margin: 0; flex-shrink: 0; }
}
.side-cta-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  width: 100%;
  padding: 0.95rem 1rem;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary-500), #06b6d4);
  color: #ffffff;
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.02em;
  box-shadow: 0 12px 32px rgba(59, 130, 246, 0.30);
  transition: transform 0.18s, box-shadow 0.18s;
}
.side-cta-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 40px rgba(59, 130, 246, 0.42);
}

/* ── content 主区 ──────────────────────────────────────────────── */

.content {
  position: relative;
  padding: 3rem 3rem 4rem;
  max-width: 1280px;
}
@media (max-width: 900px) {
  .content { padding: 2rem 1.25rem 3rem; }
}

/* ── Hero（首屏巨标题 + 视觉块） ────────────────────────────────── */

.hero {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2rem;
  align-items: center;
  margin-bottom: 3.5rem;
}
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; gap: 1.5rem; }
}

.hero-text .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  background: rgba(59, 130, 246, 0.10);
  color: var(--primary-700);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  margin-bottom: 1.6rem;
}
.hero-text .eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary-500);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.18);
}

.hero-title {
  font-family: var(--serif);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--slate-900);
  font-size: clamp(3.2rem, 8vw, 6rem);
  line-height: 1.05;
}
.hero-title .accent {
  background: linear-gradient(135deg, var(--primary-600), #06b6d4);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero-text p {
  margin-top: 1.5rem;
  font-size: 1.05rem;
  line-height: 2;
  color: var(--slate-600);
  max-width: 30rem;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

/* 视觉块（hero 右侧大卡） */
.hero-visual {
  position: relative;
  border-radius: 28px;
  padding: 2.5rem;
  background:
    radial-gradient(circle at 20% 0%, rgba(255,255,255,0.7), transparent 60%),
    linear-gradient(135deg, #93c5fd 0%, #67e8f9 50%, #a5f3fc 100%);
  min-height: 320px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow:
    0 30px 80px rgba(59, 130, 246, 0.25),
    inset 0 0 0 1px rgba(255, 255, 255, 0.4);
}
.hero-visual::before {
  /* 内部光晕 */
  content: '';
  position: absolute;
  inset: -40%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.6), transparent 55%);
  filter: blur(40px);
  z-index: 0;
}
.hero-visual > * { position: relative; z-index: 1; }
.hero-visual .vh-tag {
  align-self: flex-start;
  padding: 0.3rem 0.85rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
  color: var(--primary-700);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
}
.hero-visual .vh-mid {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  margin-top: 1.6rem;
}
.hero-visual .vh-mid img {
  width: 96px; height: 96px;
  border-radius: 24px;
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.18);
}
.hero-visual .vh-mid .title {
  font-family: var(--serif);
  font-size: 2.2rem;
  font-weight: 700;
  color: #ffffff;
  text-shadow: 0 2px 16px rgba(15, 23, 42, 0.18);
  line-height: 1.1;
}
.hero-visual .vh-mid .sub {
  margin-top: 0.4rem;
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.88rem;
  letter-spacing: 0.08em;
}
.hero-visual .vh-foot {
  margin-top: 1.6rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.6rem;
}
.hero-visual .vh-foot .item {
  background: rgba(255, 255, 255, 0.55);
  padding: 0.7rem;
  border-radius: 12px;
  text-align: center;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.hero-visual .vh-foot .item .num {
  font-family: var(--serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--slate-900);
}
.hero-visual .vh-foot .item .lbl {
  margin-top: 0.2rem;
  font-size: 0.72rem;
  color: var(--slate-700);
  letter-spacing: 0.06em;
}

/* ── 按钮 ────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  border-radius: 14px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  font-family: var(--sans);
  transition: transform 0.18s, box-shadow 0.18s, background 0.2s,
              color 0.2s, border-color 0.2s;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary-500), #06b6d4);
  color: #ffffff;
  box-shadow: 0 12px 32px rgba(59, 130, 246, 0.30);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 40px rgba(59, 130, 246, 0.42);
}
.btn-outline {
  background: rgba(255, 255, 255, 0.7);
  color: var(--slate-700);
  border-color: var(--slate-200);
}
.btn-outline:hover {
  border-color: var(--primary-300, var(--primary-200));
  color: var(--primary-700);
  background: #ffffff;
}
.btn-large { padding: 1.05rem 2rem; font-size: 1.05rem; border-radius: 16px; }

/* ── 区段标题 ──────────────────────────────────────────────────── */

.section { margin-top: 3rem; }

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 1.4rem;
  gap: 1rem;
  flex-wrap: wrap;
}
.section-head .left h2 {
  font-family: var(--serif);
  font-size: 2.2rem;
  color: var(--slate-900);
  font-weight: 700;
}
.section-head .left p {
  margin-top: 0.4rem;
  color: var(--slate-500);
  font-size: 0.95rem;
}
.section-head .more {
  color: var(--primary-600);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
}

/* ── 功能卡（柔色） ───────────────────────────────────────────── */

.cards {
  display: grid;
  gap: 1.4rem;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}

.card {
  position: relative;
  border-radius: 22px;
  padding: 1.6rem 1.6rem 1.4rem;
  border: 1px solid rgba(255, 255, 255, 0.6);
  background: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: var(--shadow-card);
  transition: transform 0.22s ease, box-shadow 0.22s ease;
  overflow: hidden;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 60px rgba(59, 130, 246, 0.18);
}
/* 5 种柔色变体，循环使用让整体不单调 */
.card.tone-1 { background: linear-gradient(160deg, var(--sky-100), #f0f9ff 80%); }
.card.tone-2 { background: linear-gradient(160deg, var(--indigo-50), #fafbff 80%); }
.card.tone-3 { background: linear-gradient(160deg, var(--cyan-100), #f0fdff 80%); }
.card.tone-4 { background: linear-gradient(160deg, var(--teal-100), #f0fffb 80%); }
.card.tone-5 { background: linear-gradient(160deg, #fef3c7, #fffbeb 80%); }
.card.tone-6 { background: linear-gradient(160deg, #fee2e2, #fff5f5 80%); }

.card .badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  padding: 0.18rem 0.6rem;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #ffffff;
}
.badge.hot     { background: linear-gradient(135deg, #fb7185, #f43f5e); }
.badge.new     { background: linear-gradient(135deg, #06b6d4, #0ea5e9); }
.badge.beta    { background: linear-gradient(135deg, #8b5cf6, #6366f1); }

.card h3 {
  font-family: var(--serif);
  font-size: 1.35rem;
  color: var(--slate-900);
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.card p {
  color: var(--slate-600);
  font-size: 0.92rem;
  line-height: 1.85;
}
.card .icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.7);
  color: var(--primary-700);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--serif);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1rem;
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.12);
}
.card .arrow {
  position: absolute;
  bottom: 1rem;
  right: 1rem;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  color: var(--primary-600);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.18);
  transition: transform 0.18s, background 0.18s;
}
.card:hover .arrow {
  transform: translate(2px, -2px);
  background: var(--primary-600);
  color: #ffffff;
}

/* ── 下载页特殊版块 ───────────────────────────────────────────── */

.dl-grid {
  display: grid;
  gap: 1.6rem;
  grid-template-columns: 1.4fr 1fr;
  margin-top: 0.4rem;
}
@media (max-width: 900px) {
  .dl-grid { grid-template-columns: 1fr; }
}

.dl-main {
  border-radius: 24px;
  padding: 2.2rem;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--slate-200);
  box-shadow: var(--shadow-card);
}
.dl-main .label {
  display: inline-block;
  padding: 0.3rem 0.8rem;
  border-radius: 999px;
  background: rgba(59, 130, 246, 0.10);
  color: var(--primary-700);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
}
.dl-main h2 {
  font-family: var(--serif);
  font-size: 2rem;
  color: var(--slate-900);
  margin-top: 0.7rem;
  font-weight: 700;
}
.dl-main .meta {
  margin-top: 0.6rem;
  color: var(--slate-500);
  font-size: 0.92rem;
}

.dl-aside {
  border-radius: 24px;
  padding: 2rem;
  background:
    radial-gradient(circle at 30% 20%, rgba(255,255,255,0.7), transparent 55%),
    linear-gradient(135deg, #93c5fd 0%, #67e8f9 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  box-shadow: 0 20px 60px rgba(59, 130, 246, 0.22);
}
.dl-aside img {
  width: 110px; height: 110px;
  border-radius: 26px;
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.20);
}
.dl-aside .name {
  margin-top: 1.1rem;
  font-family: var(--serif);
  font-size: 1.55rem;
  font-weight: 700;
  color: #ffffff;
  text-shadow: 0 2px 10px rgba(15, 23, 42, 0.15);
}
.dl-aside .ver {
  margin-top: 0.2rem;
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.9rem;
}

.dl-row {
  margin-top: 1.5rem;
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}
.kv-list {
  margin-top: 1.6rem;
  display: grid;
  gap: 0.7rem;
  grid-template-columns: 1fr 1fr;
}
@media (max-width: 600px) {
  .kv-list { grid-template-columns: 1fr; }
}
.kv-item {
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--slate-200);
  border-radius: 14px;
  padding: 0.85rem 1rem;
}
.kv-item .k { color: var(--slate-500); font-size: 0.78rem; letter-spacing: 0.05em; }
.kv-item .v { color: var(--slate-900); font-size: 1rem; font-weight: 600; margin-top: 0.2rem; }

/* 流程列表 */
.steps {
  list-style: none;
  margin-top: 1rem;
  counter-reset: step;
  background: rgba(255, 255, 255, 0.7);
  border-radius: 20px;
  padding: 0.5rem 1.4rem;
  border: 1px solid var(--slate-200);
}
.steps li {
  position: relative;
  padding: 1rem 0 1rem 2.6rem;
  border-bottom: 1px dashed var(--slate-200);
  color: var(--slate-700);
  line-height: 1.85;
}
.steps li:last-child { border-bottom: none; }
.steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0; top: 1rem;
  width: 26px; height: 26px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-500), #06b6d4);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  font-weight: 700;
  box-shadow: 0 6px 14px rgba(59, 130, 246, 0.30);
}

/* ── 反馈页表单 ───────────────────────────────────────────────── */

.form-card {
  border-radius: 24px;
  padding: 2rem;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--slate-200);
  box-shadow: var(--shadow-card);
}
@media (min-width: 700px) {
  .form-card { padding: 2.4rem 2.6rem; }
}
.form-grid {
  display: grid;
  gap: 1.1rem;
  grid-template-columns: 1fr;
}
@media (min-width: 640px) {
  .form-grid { grid-template-columns: 1fr 1fr; }
}
.field { display: flex; flex-direction: column; }
.field.full { grid-column: 1 / -1; }
.field label {
  font-size: 0.88rem;
  color: var(--slate-700);
  margin-bottom: 0.5rem;
  font-weight: 600;
}
.field label .opt {
  color: var(--slate-400);
  font-weight: 400;
  font-size: 0.78rem;
  margin-left: 0.35rem;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  font-size: 0.95rem;
  font-family: var(--sans);
  color: var(--slate-900);
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--slate-200);
  border-radius: 14px;
  outline: none;
  transition: border-color 0.18s, box-shadow 0.18s;
}
.field textarea {
  min-height: 170px;
  resize: vertical;
  line-height: 1.75;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--primary-500);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
}
.field .hint {
  margin-top: 0.4rem;
  font-size: 0.78rem;
  color: var(--slate-500);
}
.counter {
  align-self: flex-end;
  margin-top: 0.4rem;
  font-size: 0.78rem;
  color: var(--slate-500);
}
.submit-row {
  margin-top: 1.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}
@media (min-width: 640px) {
  .submit-row { flex-direction: row; align-items: center; justify-content: space-between; }
}
.submit-row .left { color: var(--slate-500); font-size: 0.85rem; }
.submit-row .right { display: flex; gap: 0.7rem; }
.btn[disabled] { opacity: 0.5; cursor: not-allowed; transform: none !important; }

.status {
  margin-top: 1.2rem;
  padding: 0.95rem 1.1rem;
  border-radius: 14px;
  font-size: 0.95rem;
  line-height: 1.65;
  display: none;
}
.status.show { display: block; }
.status.success {
  background: linear-gradient(135deg, #d1fae5, #ecfdf5);
  color: #065f46;
  border: 1px solid #a7f3d0;
}
.status.error {
  background: linear-gradient(135deg, #fee2e2, #fef2f2);
  color: #7f1d1d;
  border: 1px solid #fecaca;
}
.status a { color: inherit; text-decoration: underline; font-weight: 600; }

/* ── 通用：内嵌 hero 样式（小一些的页面顶部） ─────────────────── */

.page-head {
  border-radius: 24px;
  padding: 2.4rem 2.2rem;
  background:
    radial-gradient(circle at 80% 20%, rgba(103, 232, 249, 0.30), transparent 55%),
    rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: var(--shadow-card);
  margin-bottom: 2rem;
}
.page-head .eyebrow {
  display: inline-block;
  padding: 0.3rem 0.8rem;
  border-radius: 999px;
  background: rgba(59, 130, 246, 0.10);
  color: var(--primary-700);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  margin-bottom: 1rem;
}
.page-head h1 {
  font-family: var(--serif);
  font-size: clamp(2rem, 5vw, 3.4rem);
  color: var(--slate-900);
  font-weight: 700;
  line-height: 1.1;
}
.page-head .lead {
  margin-top: 1rem;
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--slate-600);
  max-width: 36rem;
}

/* 简易表格风格列表 */
.list-card {
  margin-top: 1rem;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--slate-200);
  padding: 1.4rem 1.6rem;
}
.list-card ul { list-style: none; }
.list-card li {
  padding: 0.65rem 0;
  border-bottom: 1px dashed var(--slate-200);
  color: var(--slate-700);
  line-height: 1.85;
}
.list-card li:last-child { border-bottom: none; }
.list-card li strong { color: var(--slate-900); margin-right: 0.4rem; }

/* ── 页脚 ────────────────────────────────────────────────────── */

.footer {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--slate-200);
  color: var(--slate-500);
  font-size: 0.85rem;
}
.footer a {
  color: var(--slate-600);
  text-decoration: none;
  margin-right: 1.2rem;
}
.footer a:hover { color: var(--primary-600); }

/* （旧的横向滚动移动端规则已被上方"汉堡抽屉"方案取代，删除以免冲突） */