/* ============================================================
   BEYESNO · 设计系统 v1
   暖白纸面 + 严格单色界面 + 单一陶橙强调色
   家具产品图提供色彩，界面本身退后
   ============================================================ */

:root {
  /* 色彩 —— 暖白纸面，拒绝纯白 */
  --paper: #fbfbf9;
  --surface: #ffffff;
  --ink: #26241d;            /* 暖调近黑 */
  --ink-soft: #55534a;
  --muted: #8f8d81;          /* 次级文字 */
  --line: #e3e1d9;           /* 1px 发丝线 —— 第一材质 */
  --line-strong: #26241d;

  /* 唯一强调色：陶橙 */
  --accent: #e73b1d;
  --accent-hover: #ce3216;
  --accent-soft: #fdeeE9;
  --accent-glow: rgba(231, 59, 29, 0.35);

  /* 语义色（克制使用） */
  --ok: #3d7a4e;
  --warn: #b8860b;

  /* 深色带 */
  --dark: #26241d;
  --dark-ink: #f4f3ee;

  /* 字体 —— 拉丁用 Geist，中文回退系统栈；技术数据用 Mono */
  --font-sans: "Geist", -apple-system, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: "Geist Mono", ui-monospace, "SF Mono", Menlo,
    "JetBrains Mono", monospace;

  /* 圆角阶梯：6 / 10 / 14 / 20 */
  --r-tag: 6px;
  --r-card: 10px;
  --r-section: 14px;
  --r-block: 20px;

  /* 暖阴影，低饱和，仅用于悬浮与窗口 chrome */
  --shadow-lift: 0 24px 60px -20px rgba(38, 36, 29, 0.18);
  --shadow-chrome: 0 32px 80px -32px rgba(38, 36, 29, 0.28);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  /* 纸面颗粒：两处固定径向微光 */
  background-image:
    radial-gradient(1200px 600px at 20% -10%, rgba(231, 59, 29, 0.025), transparent 60%),
    radial-gradient(1000px 500px at 85% 110%, rgba(38, 36, 29, 0.03), transparent 60%);
  background-attachment: fixed;
}

::selection { background: var(--ink); color: var(--paper); }

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

.mono {
  font-family: var(--font-mono);
  font-feature-settings: "tnum" 1;
}

/* ---------- 微标签：大写 + 宽字距 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.eyebrow .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  padding: 3px 8px;
  border: 1px solid var(--line);
  border-radius: var(--r-tag);
  color: var(--ink-soft);
  background: var(--surface);
  white-space: nowrap;
}
.tag.accent { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }

/* ---------- 按钮：1px 边 + 8px 圆角，箭头 hover 位移 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 8px;
  border: 1px solid var(--ink);
  font-size: 14px;
  font-weight: 550;
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease,
    background 160ms ease, border-color 160ms ease;
  background: var(--surface);
  color: var(--ink);
}
.btn .arrow { transition: transform 160ms ease; }
.btn:hover .arrow { transform: translateX(3px); }

.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn.primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }

.btn.dark {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}
.btn.dark:hover { box-shadow: var(--shadow-lift); transform: translateY(-1px); }

.btn.ghost:hover { border-color: var(--ink); background: var(--paper); }

.btn:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-soft);
}

/* ---------- 页头：毛玻璃 + 滚动出现底线 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  background: rgba(251, 251, 249, 0.75);
  border-bottom: 1px solid transparent;
  transition: border-color 240ms ease;
}
.site-header.scrolled { border-bottom-color: var(--line); }

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 32px;
}
.wordmark {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: none;
}
.brand-logo {
  display: block;
  width: auto;
  height: 50px;
  max-width: 154px;
  object-fit: contain;
  /* 原始横版左侧图形需保留全高，右侧仅保留“云蛙”主字标，隐藏图片内旧副标题。 */
  -webkit-mask-image: linear-gradient(#000 0 0), linear-gradient(#000 0 0);
  -webkit-mask-position: left top, right top;
  -webkit-mask-size: 44% 100%, 56% 78%;
  -webkit-mask-repeat: no-repeat;
  mask-image: linear-gradient(#000 0 0), linear-gradient(#000 0 0);
  mask-position: left top, right top;
  mask-size: 44% 100%, 56% 78%;
  mask-repeat: no-repeat;
}
.brand-tagline, .wordmark .sub, .brand-context {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 400;
}
.brand-tagline {
  padding-left: 12px;
  border-left: 1px solid var(--line);
  white-space: nowrap;
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
}
.brand-context {
  padding-left: 10px;
  border-left: 1px solid var(--line);
  white-space: nowrap;
}
.site-nav {
  display: flex;
  gap: 4px;
  margin-left: auto;
}
.site-nav a {
  font-size: 13.5px;
  padding: 7px 12px;
  border-radius: 8px;
  border: 1px solid transparent;
  color: var(--ink-soft);
  transition: border-color 160ms ease, color 160ms ease;
}
.site-nav a:hover, .site-nav a.active, .nav-group summary:hover, .nav-group summary.active {
  border-color: var(--ink);
  color: var(--ink);
}
.nav-group { position: relative; }
.nav-group summary {
  list-style: none;
  cursor: pointer;
  font-size: 13.5px;
  padding: 7px 10px 7px 12px;
  border-radius: 8px;
  border: 1px solid transparent;
  color: var(--ink-soft);
  transition: border-color 160ms ease, color 160ms ease;
  white-space: nowrap;
}
.nav-group summary::-webkit-details-marker { display: none; }
.nav-caret { display: inline-block; margin-left: 5px; color: var(--muted); transition: transform 160ms ease; }
.nav-group[open] .nav-caret { transform: rotate(180deg); }
.nav-menu {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  min-width: 148px;
  padding: 7px;
  transform: translateX(-50%);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow-lift);
}
.nav-menu::before { content: ''; position: absolute; left: 0; right: 0; top: -9px; height: 9px; }
.nav-menu a { display: block; white-space: nowrap; }
.nav-group[open] > .nav-menu, .nav-group:hover > .nav-menu, .nav-group:focus-within > .nav-menu { display: block; }
.header-actions { display: flex; align-items: center; gap: 8px; }
.header-balance { font-family: var(--font-mono); font-size: 12px; font-weight: 600; color: var(--accent); white-space: nowrap; }
.nav-toggle { display: none; margin-left: auto; width: 40px; height: 40px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); color: var(--ink); font-size: 22px; line-height: 1; }
.header-cta { margin-left: 8px; padding: 9px 16px; font-size: 13px; }

/* ---------- 页面容器 ---------- */
.wrap { max-width: 1280px; margin: 0 auto; padding: 0 32px; }
.section { padding: 96px 0; }
.section + .section { border-top: 1px solid var(--line); }

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 56px;
}
.section-head h2 {
  font-size: clamp(28px, 3.6vw, 44px);
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-top: 14px;
  font-weight: 650;
}
.section-head p {
  max-width: 42ch;
  color: var(--ink-soft);
  font-size: 15px;
}

/* ---------- 产品卡：纯平面，1px 边，hover 边变黑 ---------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}
.product-card {
  display: block;
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  background: var(--surface);
  overflow: hidden;
  transition: border-color 160ms ease;
}
.product-card:hover { border-color: var(--line-strong); }
.product-card .thumb {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, #f5f4f0, #efeee9);
}
.product-card .thumb svg { width: 72%; height: 72%; }
.product-card .thumb img { width: 100%; height: 100%; object-fit: contain; display: block; }
.product-card .thumb .no-img {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.product-card .meta { padding: 14px 16px 16px; }
.product-card .name { font-size: 14px; font-weight: 550; }
.product-card .row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-top: 6px;
}
.product-card .price {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
}
.product-card .sku {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--muted);
  letter-spacing: 0.02em;
}

/* ---------- 数据表格：全宽 1px 格线，电子表格质感 ---------- */
.data-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  font-size: 13.5px;
}
.data-table th, .data-table td {
  border: 1px solid var(--line);
  padding: 10px 16px;
  text-align: left;
  vertical-align: top;
}
.data-table th {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--muted);
  background: var(--paper);
  white-space: nowrap;
}
.data-table td.num, .data-table th.num {
  font-family: var(--font-mono);
  font-feature-settings: "tnum" 1;
  text-align: right;
  white-space: nowrap;
}
.data-table tbody tr { transition: background 120ms ease; }
.data-table tbody tr:hover { background: var(--paper); }

/* ---------- 手风琴 FAQ ---------- */
.faq-item { border: 1px solid var(--line); border-radius: var(--r-card); background: var(--surface); }
.faq-item + .faq-item { margin-top: 8px; }
.faq-q {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  font-size: 15px;
  font-weight: 550;
  cursor: pointer;
  background: none;
  border: none;
  font-family: inherit;
  color: var(--ink);
  text-align: left;
}
.faq-q .tri {
  width: 10px; height: 10px;
  border-right: 1.5px solid var(--muted);
  border-bottom: 1.5px solid var(--muted);
  transform: rotate(45deg);
  transition: transform 240ms ease;
  flex-shrink: 0;
  margin-left: 16px;
}
.faq-item.open .tri { transform: rotate(225deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 240ms ease;
}
.faq-a .inner {
  padding: 0 20px 20px;
  color: var(--ink-soft);
  font-size: 14px;
  max-width: 68ch;
}

/* ---------- 深色 CTA 带 + 陶橙辉光 ---------- */
.cta-band {
  position: relative;
  background: var(--dark);
  color: var(--dark-ink);
  border-radius: var(--r-block);
  padding: 88px 64px;
  overflow: hidden;
}
.cta-band::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(600px 320px at 88% 12%, var(--accent-glow), transparent 65%);
  pointer-events: none;
}
.cta-band h2 {
  font-size: clamp(30px, 4vw, 52px);
  letter-spacing: -0.03em;
  line-height: 1.12;
  max-width: 16ch;
  position: relative;
  z-index: 1;
}
.cta-band .actions { margin-top: 36px; display: flex; gap: 12px; position: relative; z-index: 1; }
.cta-band .btn.ghost-dark {
  background: transparent;
  border-color: rgba(244, 243, 238, 0.35);
  color: var(--dark-ink);
}
.cta-band .btn.ghost-dark:hover { border-color: var(--dark-ink); }

/* ---------- 页脚 ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 48px 0 40px;
  margin-top: 96px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 32px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--muted);
  letter-spacing: 0.03em;
}
.footer-inner a:hover { color: var(--ink); }

/* ---------- 动效：活跃管线节点的微光扫过 ---------- */
@keyframes shimmer {
  from { transform: translateX(-100%); }
  to { transform: translateX(200%); }
}
.shimmer { position: relative; overflow: hidden; }
.shimmer::after {
  content: "";
  position: absolute;
  top: 0; bottom: 0; left: 0;
  width: 50%;
  background: linear-gradient(100deg, transparent, rgba(231, 59, 29, 0.14), transparent);
  animation: shimmer 1.6s linear infinite;
}

@keyframes blink { 50% { opacity: 0; } }
.caret {
  display: inline-block;
  width: 8px; height: 1.1em;
  background: var(--accent);
  vertical-align: text-bottom;
  animation: blink 1s steps(1) infinite;
}

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

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .product-grid { grid-template-columns: repeat(3, 1fr); }
  .brand-tagline { display: none; }
}
@media (max-width: 760px) {
  .wrap { padding: 0 20px; }
  .section { padding: 64px 0; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .header-inner { height: 58px; padding: 0 20px; gap: 10px; position: relative; }
  .brand-logo { height: 43px; max-width: 122px; }
  .brand-tagline, .wordmark .sub, .brand-context { display: none; }
  .nav-toggle { display: inline-grid; place-items: center; }
  .site-nav { display: none; position: absolute; top: 58px; left: 12px; right: 12px; margin: 0; padding: 10px; flex-direction: column; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow-lift); }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 11px 12px; }
  .nav-group summary { display: flex; align-items: center; justify-content: space-between; padding: 11px 12px; }
  .nav-menu { position: static; min-width: 0; padding: 4px 0 2px 12px; transform: none; border: 0; box-shadow: none; background: transparent; }
  .nav-menu::before { display: none; }
  .nav-group:not([open]) > .nav-menu { display: none; }
  .nav-group[open] > .nav-menu { display: block; }
  .nav-menu a { color: var(--muted); }
  .header-actions .header-cta.btn.primary { display: none; }
  .header-actions .header-cta { margin-left: 0; padding: 8px 11px; }
  .header-balance { font-size: 11px; }
  .section-head { flex-direction: column; align-items: flex-start; }
  .cta-band { padding: 56px 28px; }
}

/* 登录账户内的星链分销商加盟意向 */
.partner-status-card { border: 1px solid #f0b5a7; border-radius: var(--r-section); background: linear-gradient(135deg, #fff7f3 0%, #fff 64%); padding: 24px 26px; margin-bottom: 16px; }
.partner-status-card[hidden] { display: none; }
.partner-status-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.partner-status-head h3 { margin: 5px 0 0; font-size: 20px; }
.partner-status-eyebrow { font: 700 10px var(--font-mono); letter-spacing: .12em; color: #c84427; }
.partner-status-badge { border: 1px solid #e06a4c; border-radius: 999px; padding: 6px 11px; color: #a9341c; background: #fff; font-size: 12px; font-weight: 650; }
.partner-status-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; margin-top: 18px; }
.partner-status-item { border: 1px solid rgba(224,106,76,.2); border-radius: 10px; background: rgba(255,255,255,.75); padding: 12px 14px; min-width: 0; }
.partner-status-item span { display: block; color: var(--muted); font: 10px var(--font-mono); letter-spacing: .05em; margin-bottom: 5px; }
.partner-status-item b { display: block; font-size: 13px; overflow-wrap: anywhere; }
.partner-status-copy { margin-top: 10px; padding: 13px 15px; border-radius: 10px; background: rgba(255,255,255,.78); color: var(--ink-soft); font-size: 13px; line-height: 1.75; white-space: pre-wrap; }
.partner-status-copy b { color: var(--ink); }
.partner-status-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 16px; }
@media (max-width: 900px) { .partner-status-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .partner-status-card { padding: 20px 18px; } .partner-status-grid { grid-template-columns: 1fr; } }