/* ==================================================================
   涪匠 · 家庭自装工匠严选平台 — 官网样式
   设计语言：深青绿（专业信任） + 琥珀（工匠温度）
   断点：1024px（桌面/平板）/ 960px（导航折叠）/ 768px（大屏手机）/ 480px（小屏手机）
   ================================================================== */

/* ---------- 设计变量 ---------- */
:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue",
    Arial, sans-serif;

  --color-primary: #0e7c66;        /* 深青绿：主色 */
  --color-primary-dark: #095c4c;
  --color-primary-deep: #073c33;
  --color-primary-soft: #e7f4f0;
  --color-accent: #f59e0b;         /* 琥珀：强调色 */
  --color-accent-dark: #d97f06;
  --color-accent-soft: #fdf3dd;

  --color-ink: #16232b;            /* 标题 */
  --color-body: #4c5f6b;           /* 正文 */
  --color-muted: #7e8f99;          /* 辅助 */
  --color-line: #e2ebe8;

  --color-bg: #ffffff;
  --color-bg-soft: #f5f9f7;
  --color-dark: #0d1f1a;           /* 深色区块 */
  --color-dark-2: #12312a;
  --color-success: #0a7d54;
  --color-danger: #d33f2e;

  --r-s: 10px;
  --r-m: 16px;
  --r-l: 24px;
  --r-full: 999px;

  --shadow-sm: 0 1px 2px rgba(13, 31, 26, 0.06);
  --shadow-md: 0 10px 24px -12px rgba(13, 31, 26, 0.16);
  --shadow-lg: 0 24px 48px -20px rgba(13, 31, 26, 0.28);

  --container: 1200px;
  --header-h: 72px;
}

/* ---------- 基础 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-body);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  margin: 0 0 0.6em;
  color: var(--color-ink);
  line-height: 1.35;
  font-weight: 700;
}

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

ul, ol, dl, dd { margin: 0; padding: 0; }
ul, ol { list-style: none; }

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease, opacity 0.2s ease;
}

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

button {
  font: inherit;
  color: inherit;
  border: 0;
  background: none;
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 6px;
}

.container {
  width: min(100% - 40px, var(--container));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -56px;
  z-index: 200;
  padding: 10px 18px;
  background: #fff;
  color: var(--color-primary-dark);
  font-weight: 600;
  border-radius: var(--r-s);
  box-shadow: var(--shadow-md);
  transition: top 0.2s ease;
}
.skip-link:focus { top: 12px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  line-height: 1.2;
  padding: 13px 26px;
  border-radius: var(--r-full);
  border: 1px solid transparent;
  white-space: nowrap;
  transition: transform 0.18s ease, box-shadow 0.18s ease,
    background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: linear-gradient(135deg, #12896f, var(--color-primary));
  color: #fff;
  box-shadow: 0 10px 24px -10px rgba(14, 124, 102, 0.55);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 28px -10px rgba(14, 124, 102, 0.6);
}

.btn-light {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.28);
  color: #fff;
}
.btn-light:hover {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.45);
}

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

.btn-sm { padding: 9px 18px; font-size: 0.9rem; }
.btn-lg { padding: 15px 32px; font-size: 1.02rem; }
.btn-block { width: 100%; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  color: var(--color-ink);
  background: rgba(255, 255, 255, 0.92);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: background 0.25s ease, box-shadow 0.25s ease,
    border-color 0.25s ease, color 0.25s ease;
}

/* 滚动后加白底投影；回到顶部且位于深色 Hero 上时透明白字（由 JS 控制） */
.site-header.is-scrolled {
  border-bottom-color: var(--color-line);
  box-shadow: 0 10px 30px -22px rgba(13, 31, 26, 0.35);
}
.site-header.is-top {
  background: transparent;
  color: #fff;
  box-shadow: none;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(100% - 40px, var(--container));
  margin-inline: auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-weight: 700;
}
.brand-logo {
  height: 40px;
  width: auto;
  display: block;
  flex: none;
}
/* 深色 Hero 上显示白稿 LOGO；白底导航显示黑稿（由 JS 的 is-top 类控制） */
.brand-logo-light { display: none; }
.site-header.is-top .brand-logo-dark { display: none; }
.site-header.is-top .brand-logo-light { display: block; }
.brand-slogan {
  padding-left: 14px;
  border-left: 1px solid currentColor;
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  line-height: 1.5;
  opacity: 0.72;
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  position: relative;
  display: block;
  padding: 8px 13px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 500;
  opacity: 0.82;
}
.nav-link:hover { opacity: 1; background: rgba(14, 124, 102, 0.08); }
.nav-link.is-active { opacity: 1; font-weight: 600; }
.nav-link.is-active::after {
  content: "";
  position: absolute;
  left: 13px;
  right: 13px;
  bottom: 3px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
}
.nav-actions { display: flex; align-items: center; gap: 10px; }

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  border-radius: var(--r-s);
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.25s ease, opacity 0.2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  color: #fff;
  background:
    radial-gradient(46rem 26rem at 88% -8%, rgba(18, 137, 111, 0.42), transparent 62%),
    radial-gradient(38rem 22rem at 4% 108%, rgba(245, 158, 11, 0.16), transparent 60%),
    linear-gradient(180deg, var(--color-dark) 0%, var(--color-dark-2) 58%, #0a1814 100%);
  padding: calc(var(--header-h) + 76px) 0 96px;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: radial-gradient(72% 62% at 50% 28%, #000 25%, transparent 78%);
  mask-image: radial-gradient(72% 62% at 50% 28%, #000 25%, transparent 78%);
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.06fr 0.94fr;
  gap: 56px;
  align-items: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 22px;
  padding: 7px 16px 7px 12px;
  border-radius: var(--r-full);
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.85rem;
  font-weight: 500;
}
.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #4ade80;
  box-shadow: 0 0 0 4px rgba(74, 222, 128, 0.18);
}

.hero h1 {
  color: #fff;
  font-size: clamp(2.15rem, 4.6vw, 3.5rem);
  letter-spacing: 0.01em;
  margin-bottom: 20px;
}
.hero .lead {
  max-width: 36em;
  color: rgba(255, 255, 255, 0.76);
  font-size: clamp(1rem, 1.35vw, 1.14rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 34px 0 42px;
}

/* 资质徽章行 */
.hero-creds {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 28px;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}
.hero-creds li {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 0.92rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.85);
}
.hero-creds svg {
  width: 20px;
  height: 20px;
  flex: none;
  color: #f2b54b;
}

/* Hero 右侧产品示意 */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  padding: 12px 0 20px;
}

.phone-mock {
  position: relative;
  z-index: 2;
  width: min(300px, 100%);
  padding: 22px;
  border-radius: 28px;
  background: #fff;
  color: var(--color-ink);
  box-shadow: 0 40px 80px -30px rgba(0, 0, 0, 0.6),
    0 0 0 1px rgba(255, 255, 255, 0.08);
}
.phone-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}
.phone-title { font-size: 1.05rem; font-weight: 700; }
.phone-step { font-size: 0.75rem; color: var(--color-muted); }
.phone-progress {
  display: flex;
  gap: 6px;
  margin-bottom: 18px;
}
.phone-progress span {
  height: 4px;
  flex: 1;
  border-radius: var(--r-full);
  background: var(--color-primary-soft);
}
.phone-progress span:first-child { background: var(--color-primary); }

.phone-fields { display: grid; gap: 10px; margin-bottom: 20px; }
.phone-fields li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 14px;
  border-radius: var(--r-s);
  background: var(--color-bg-soft);
  border: 1px solid var(--color-line);
  font-size: 0.88rem;
}
.pf-label { color: var(--color-muted); }
.pf-value { font-weight: 600; }
.pf-hot { color: var(--color-primary); }
.phone-cta {
  padding: 12px;
  border-radius: var(--r-full);
  text-align: center;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, #12896f, var(--color-primary));
}

/* 浮动卡片 */
.float-card {
  position: absolute;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 12px 16px;
  border-radius: var(--r-m);
  background: rgba(255, 255, 255, 0.97);
  color: var(--color-ink);
  box-shadow: var(--shadow-lg);
  animation: floaty 5s ease-in-out infinite;
}
.float-card strong { display: block; font-size: 0.88rem; }
.fc-info { line-height: 1.45; }
.fc-tags { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 2px; }
.fc-tags i {
  font-style: normal;
  font-size: 0.66rem;
  padding: 1px 7px;
  border-radius: var(--r-full);
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
}
.fc-sub { display: block; font-size: 0.72rem; color: var(--color-muted); }
.fc-avatar {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex: none;
  border-radius: 50%;
  background: linear-gradient(135deg, #12896f, var(--color-primary));
  color: #fff;
  font-weight: 700;
}
.fc-check {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  flex: none;
  border-radius: 50%;
  background: #e3f7ec;
  color: var(--color-success);
  font-weight: 800;
}
.fc-lock {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  flex: none;
  border-radius: 50%;
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
  font-size: 1.05rem;
}

.card-craft { top: 4%; left: -6%; }
.card-accept { bottom: 9%; left: -10%; animation-delay: 1.2s; }
.card-fund { top: 44%; right: -8%; animation-delay: 2.4s; }

@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* ---------- 通用区块 ---------- */
.section { padding: 92px 0; }
.section-soft { background: var(--color-bg-soft); }

.section-head {
  max-width: 720px;
  margin: 0 auto 60px;
  text-align: center;
}
.section-head h2 { font-size: clamp(1.6rem, 3vw, 2.35rem); }
.section-head p { margin: 14px 0 0; }

.eyebrow {
  display: inline-block;
  margin: 0 0 12px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--color-primary);
}
.eyebrow-light { color: #f2b54b; }

/* 卡片网格 */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

.card {
  padding: 30px 28px;
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: var(--r-m);
  transition: transform 0.22s ease, box-shadow 0.22s ease,
    border-color 0.22s ease;
}
.card:hover {
  transform: translateY(-4px);
  border-color: #c4e2d8;
  box-shadow: var(--shadow-md);
}
.card h3 { font-size: 1.08rem; margin-bottom: 10px; }
.card p { font-size: 0.94rem; margin: 0; }

.icon-box {
  display: grid;
  place-items: center;
  width: 50px;
  height: 50px;
  margin-bottom: 20px;
  border-radius: 14px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
}
.icon-box svg { width: 26px; height: 26px; }

/* ---------- 平台定位卡 ---------- */
.pos-card { position: relative; }
.pos-tag {
  display: inline-block;
  margin-bottom: 14px;
  padding: 3px 12px;
  border-radius: var(--r-full);
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

/* ---------- 核心优势卡 ---------- */
.adv-card p { line-height: 1.85; }

/* ---------- 严选机制（深色区块） ---------- */
.section-dark {
  position: relative;
  overflow: hidden;
  color: rgba(255, 255, 255, 0.78);
  background:
    radial-gradient(40rem 24rem at 82% -6%, rgba(18, 137, 111, 0.35), transparent 60%),
    radial-gradient(34rem 20rem at 6% 110%, rgba(245, 158, 11, 0.14), transparent 55%),
    linear-gradient(180deg, var(--color-dark) 0%, #0f2a23 100%);
}
.section-head-dark h2 { color: #fff; }

.vetting-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.vetting-step {
  position: relative;
  padding: 26px 26px 24px;
  border-radius: var(--r-m);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  transition: transform 0.22s ease, background 0.22s ease;
}
.vetting-step:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.08);
}
.vs-no {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-bottom: 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(242, 181, 75, 0.25), rgba(242, 181, 75, 0.1));
  border: 1px solid rgba(242, 181, 75, 0.45);
  color: #f2b54b;
  font-weight: 800;
  font-size: 0.95rem;
}
.vetting-step h3 { color: #fff; font-size: 1.05rem; margin-bottom: 8px; }
.vetting-step p { font-size: 0.89rem; margin: 0; }

.vetting-note {
  max-width: 860px;
  margin: 36px auto 0;
  padding: 28px 32px;
  text-align: center;
  border-radius: var(--r-m);
  background: rgba(242, 181, 75, 0.08);
  border: 1px dashed rgba(242, 181, 75, 0.4);
}
.vetting-note h3 { color: #f2b54b; font-size: 1.1rem; margin-bottom: 10px; }
.vetting-note p { font-size: 0.94rem; margin: 0; }

/* ---------- 服务体系 ---------- */
.svc-card { position: relative; padding-top: 34px; }
.svc-no {
  position: absolute;
  top: 26px;
  right: 24px;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary-soft);
  letter-spacing: -0.02em;
}
.svc-card:hover .svc-no { color: #c8e6dd; }
.svc-card h3 { font-size: 1.05rem; }

/* ---------- 建材商城 ---------- */
.mall-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 56px;
  align-items: start;
}
.mall-copy h2 { font-size: clamp(1.6rem, 2.8vw, 2.2rem); }
.mall-copy > p { max-width: 36em; margin-bottom: 32px; }
.mall-points { display: grid; gap: 22px; }
.mall-point {
  position: relative;
  padding-left: 26px;
}
.mall-point::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background: var(--color-primary);
}
.mall-point h3 { font-size: 1.02rem; margin-bottom: 6px; }
.mall-point p { font-size: 0.92rem; margin: 0; color: var(--color-body); }

.mall-visual { position: sticky; top: calc(var(--header-h) + 24px); }
.price-card {
  padding: 30px 30px 24px;
  border-radius: var(--r-l);
  background: #fff;
  border: 1px solid var(--color-line);
  box-shadow: var(--shadow-lg);
}
.price-title {
  margin-bottom: 18px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-muted);
}
.price-rows { display: grid; gap: 12px; margin-bottom: 18px; }
.price-rows li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--color-line);
  font-size: 0.92rem;
  color: var(--color-body);
}
.price-rows li:last-child { border-bottom: 0; padding-bottom: 0; }
.price-rows strong { color: var(--color-ink); }
.price-total {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 20px;
  margin-bottom: 16px;
  border-radius: var(--r-s);
  background: linear-gradient(135deg, #eaf6f2, #fdf6e7);
  border: 1px solid #c8e6dd;
}
.price-total span { font-size: 0.88rem; font-weight: 600; color: var(--color-primary-dark); }
.price-total strong { font-size: 1.35rem; color: var(--color-primary-dark); letter-spacing: -0.01em; }
.price-note {
  font-size: 0.78rem;
  color: var(--color-muted);
  line-height: 1.7;
  margin: 0;
}
.mall-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}
.mall-tags span {
  padding: 5px 14px;
  border-radius: var(--r-full);
  background: #fff;
  border: 1px solid var(--color-line);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-body);
}

/* ---------- 施工价格公示 ---------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.price-table-card {
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: var(--r-l);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}
.price-table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.price-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
}
.price-table th {
  padding: 15px 20px;
  background: var(--color-primary-deep);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-align: left;
  white-space: nowrap;
}
.price-table th:first-child { width: 72px; text-align: center; }
.price-table th:nth-child(3) { text-align: right; }
.price-table td {
  padding: 13px 20px;
  border-bottom: 1px solid var(--color-line);
  font-size: 0.94rem;
  color: var(--color-body);
  vertical-align: middle;
}
.price-table tbody tr:last-child td { border-bottom: 0; }
.price-table tbody tr:nth-child(even) { background: rgba(14, 124, 102, 0.035); }
.price-table tbody tr:hover { background: var(--color-primary-soft); }
.price-table td:first-child {
  width: 72px;
  text-align: center;
  color: var(--color-muted);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.price-table td:nth-child(2) { font-weight: 600; color: var(--color-ink); }
.price-table .pt-price {
  text-align: right;
  white-space: nowrap;
  font-weight: 700;
  color: var(--color-ink);
  font-variant-numeric: tabular-nums;
}
.price-table-note {
  margin: 0;
  padding: 15px 22px;
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--color-muted);
  background: var(--color-bg-soft);
  border-top: 1px solid var(--color-line);
}

/* ---------- 价格类目 Tab 切换 ---------- */
.pt-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 26px;
}
.pt-tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border: 1px solid var(--color-line);
  border-radius: var(--r-full);
  background: #fff;
  color: var(--color-body);
  font-family: inherit;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}
.pt-tab:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.pt-tab.is-active {
  background: var(--color-primary-deep);
  border-color: var(--color-primary-deep);
  color: #fff;
  box-shadow: var(--shadow-md);
}
.pt-tab:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}
.pt-tab-count {
  display: inline-block;
  min-width: 1.6em;
  padding: 1px 7px;
  border-radius: var(--r-full);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 0.72rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  text-align: center;
  line-height: 1.5;
}
.pt-tab.is-active .pt-tab-count {
  background: rgba(255, 255, 255, 0.18);
  color: #fff;
}

/* ---------- 价格 Tab 面板 ---------- */
.pt-panel[hidden] { display: none; }
.pt-panel-title {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 14px;
  margin: 0;
  padding: 16px 22px;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-line);
}
.pt-panel-title span {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-muted);
}
.price-table tbody tr.pt-group td {
  padding: 11px 20px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  border-bottom: 1px solid var(--color-line);
}
.price-table-note-center {
  border-top: 0;
  border-radius: var(--r-l);
  background: var(--color-bg-soft);
  padding: 15px 22px;
  margin-top: 22px;
  border: 1px solid var(--color-line);
}

/* ---------- 设计师 + 管家 ---------- */
.premium-card p { line-height: 1.85; }
.premium-list {
  display: grid;
  gap: 10px;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px dashed var(--color-line);
}
.premium-list li {
  position: relative;
  padding-left: 24px;
  font-size: 0.9rem;
}
.premium-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--color-primary);
  font-weight: 800;
  font-size: 0.85rem;
}

/* ---------- 平台价值 ---------- */
.value-card { display: flex; flex-direction: column; }
.value-card h3 { font-size: 1.15rem; margin-bottom: 4px; }
.value-kw {
  margin: 0 0 12px !important;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-accent-dark);
}

/* ---------- 发展愿景带 ---------- */
.vision-band {
  margin-top: 48px;
  padding: 52px 48px;
  text-align: center;
  border-radius: var(--r-l);
  color: rgba(255, 255, 255, 0.78);
  background:
    radial-gradient(30rem 18rem at 80% 0%, rgba(18, 137, 111, 0.3), transparent 60%),
    linear-gradient(150deg, var(--color-dark) 0%, #12312a 60%, #17306e 130%);
}
.vision-band h3 {
  color: #fff;
  font-size: clamp(1.3rem, 2.4vw, 1.8rem);
  margin-bottom: 16px;
}
.vision-band > p {
  max-width: 46em;
  margin: 0 auto;
  font-size: 0.95rem;
}
.vision-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 28px;
}
.vision-tags li {
  padding: 7px 20px;
  border-radius: var(--r-full);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.1em;
}

/* ---------- 双端入口 + 表单 ---------- */
.join-section { background: #fff; }
.join-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: start;
}
.join-copy h2 { font-size: clamp(1.6rem, 2.8vw, 2.2rem); }
.join-copy > p { max-width: 34em; }
.join-points {
  display: grid;
  gap: 12px;
  margin: 26px 0 36px;
}
.join-points li {
  position: relative;
  padding-left: 30px;
  font-size: 0.96rem;
}
.join-points li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 1px;
  display: grid;
  place-items: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 0.72rem;
  font-weight: 800;
}
.join-crafts {
  padding: 24px 26px;
  border-radius: var(--r-m);
  background: var(--color-bg-soft);
  border: 1px dashed #c8ddd6;
}
.join-crafts h3 { font-size: 1.05rem; margin-bottom: 6px; }
.join-crafts p { font-size: 0.92rem; margin-bottom: 16px; }
.join-crafts .btn-light {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.join-form {
  padding: 34px 32px;
  border-radius: var(--r-l);
  background: #fff;
  border: 1px solid var(--color-line);
  box-shadow: var(--shadow-lg);
}
.form-title {
  font-size: 1.2rem;
  margin-bottom: 22px;
}
.field { display: grid; gap: 6px; margin-bottom: 18px; }
.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.field label {
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--color-ink);
}
.optional { font-weight: 400; color: var(--color-muted); }
.field input,
.field select,
.field textarea {
  width: 100%;
  font: inherit;
  font-size: 0.95rem;
  padding: 11px 14px;
  color: var(--color-ink);
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: var(--r-s);
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
  appearance: none;
}
.field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='m1 1 5 5 5-5' stroke='%237e8f99' stroke-width='1.8' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}
.field textarea { resize: vertical; min-height: 76px; }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(14, 124, 102, 0.14);
}
.field .err {
  display: none;
  margin: 0;
  font-size: 0.8rem;
  color: var(--color-danger);
}
.field.has-error input,
.field.has-error select { border-color: var(--color-danger); }
.field.has-error .err { display: block; }

.form-status {
  display: none;
  margin: 14px 0 0;
  padding: 12px 16px;
  border-radius: var(--r-s);
  background: #e6f6ef;
  border: 1px solid #b5e6d4;
  color: var(--color-success);
  font-size: 0.9rem;
}
.form-status.is-visible { display: block; }
.form-status.is-error {
  background: #fdecea;
  border-color: #f3c1bb;
  color: var(--color-danger);
}
.join-form button[type="submit"]:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}
.form-tip {
  margin: 14px 0 0;
  font-size: 0.78rem;
  color: var(--color-muted);
  text-align: center;
}

/* ---------- FAQ ---------- */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: grid;
  gap: 14px;
}
.faq-item {
  padding: 2px 24px;
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: var(--r-m);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.faq-item[open] {
  border-color: #c4e2d8;
  box-shadow: var(--shadow-sm);
}
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
  font-weight: 600;
  color: var(--color-ink);
  cursor: pointer;
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "";
  flex: none;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--color-muted);
  border-bottom: 2px solid var(--color-muted);
  transform: rotate(45deg);
  transition: transform 0.2s ease;
}
.faq-item[open] summary::after { transform: rotate(-135deg); }
.faq-body {
  padding: 0 0 18px;
  font-size: 0.94rem;
}
.faq-body p { margin: 0; }

/* ---------- 页脚 ---------- */
.site-footer {
  padding: 68px 0 0;
  color: rgba(255, 255, 255, 0.62);
  font-size: 0.9rem;
  background:
    radial-gradient(36rem 20rem at 90% 0%, rgba(18, 137, 111, 0.18), transparent 60%),
    var(--color-dark);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 44px;
  padding-bottom: 52px;
}
.footer-brand p { max-width: 26em; margin: 18px 0 0; }
.footer-slogan {
  font-weight: 700;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.85);
}
.brand-footer {
  display: inline-flex;
  align-items: center;
  color: #fff;
}
.brand-footer .brand-logo { height: 46px; }
.footer-col h4 {
  margin-bottom: 18px;
  color: #fff;
  font-size: 0.95rem;
}
.footer-links, .footer-contact { display: grid; gap: 11px; }
.footer-links a:hover { color: #fff; }
.footer-contact li { line-height: 1.6; }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px 24px;
  padding: 22px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.82rem;
}
.footer-bottom p { margin: 0; }
.footer-legal { display: flex; gap: 22px; }
.footer-legal a:hover { color: #fff; }

/* ---------- 回到顶部 ---------- */
.to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 90;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: #fff;
  color: var(--color-primary);
  border: 1px solid var(--color-line);
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
}
.to-top.is-visible { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.to-top svg { width: 20px; height: 20px; }

/* ---------- 滚动显现动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-visible { opacity: 1; transform: none; }

/* ==================================================================
   响应式
   ================================================================== */

/* ---------- 平板及以下（<=1024px） ---------- */
@media (max-width: 1024px) {
  .section { padding: 76px 0; }

  .hero { padding: calc(var(--header-h) + 60px) 0 76px; }
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .hero-visual { padding: 10px 0 4px; }
  .card-craft { left: 0; }
  .card-accept { left: -2%; }
  .card-fund { right: 0; }

  .grid-4 { grid-template-columns: repeat(2, 1fr); }

  .vetting-steps { grid-template-columns: repeat(2, 1fr); }

  .mall-grid { grid-template-columns: 1fr; gap: 44px; }
  .mall-visual { position: static; max-width: 520px; }

  .join-grid { grid-template-columns: 1fr; gap: 44px; }

  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}

/* ---------- 导航折叠为汉堡菜单（<=960px） ---------- */
@media (max-width: 960px) {
  .nav-toggle { display: flex; }

  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 14px;
    max-height: calc(100dvh - var(--header-h));
    overflow-y: auto;
    padding: 18px 20px 28px;
    background: #fff;
    color: var(--color-ink);
    border-top: 1px solid var(--color-line);
    box-shadow: 0 30px 50px -24px rgba(13, 31, 26, 0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s;
  }
  .site-nav.is-open { opacity: 1; visibility: visible; transform: none; }
  .nav-list { flex-direction: column; gap: 2px; }
  .nav-link { padding: 13px 14px; font-size: 1rem; }
  .nav-link.is-active { color: var(--color-primary); background: var(--color-primary-soft); }
  .nav-link.is-active::after { display: none; }
  .nav-actions { padding-top: 12px; border-top: 1px solid var(--color-line); }
  .nav-actions .btn { flex: 1; }

  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

/* ---------- 大屏手机（<=768px） ---------- */
@media (max-width: 768px) {
  .hero { padding: calc(var(--header-h) + 44px) 0 64px; }
  .hero h1 { font-size: clamp(1.9rem, 7vw, 2.5rem); }
  .hero-creds { gap: 12px 20px; }

  .grid-4 { grid-template-columns: 1fr; }

  .vetting-steps { grid-template-columns: 1fr; }

  /* 价格表：小屏转为卡片式，避免横向滚动 */
  .price-table-scroll { overflow-x: visible; }
  .price-table { min-width: 0; }
  .price-table thead { display: none; }
  .price-table tbody tr {
    display: grid;
    grid-template-columns: 30px 1fr;
    column-gap: 12px;
    row-gap: 4px;
    padding: 14px 18px;
  }
  .price-table tbody tr:nth-child(even) { background: var(--color-bg-soft); }
  .price-table tbody tr td {
    padding: 0;
    border-bottom: 0;
    text-align: left;
    white-space: normal;
  }
  .price-table tbody tr td:first-child {
    grid-row: 1 / span 2;
    width: auto;
    align-self: start;
    padding-top: 2px;
    font-size: 0.85rem;
  }
  .price-table tbody tr td:nth-child(2) { font-size: 0.98rem; }
  .price-table .pt-price::before {
    display: block;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--color-muted);
    letter-spacing: 0.04em;
    margin-bottom: 1px;
    content: "报价";
  }

  /* 价格 Tab：小屏适配 */
  .pt-tabs { gap: 8px; margin-bottom: 20px; }
  .pt-tab { padding: 9px 16px; font-size: 0.88rem; }
  .pt-panel-title { padding: 14px 18px; font-size: 0.96rem; }
  .price-table tbody tr.pt-group {
    display: block;
    padding: 12px 18px;
  }
  .price-table tbody tr.pt-group td {
    padding: 0;
    background: none;
    border-bottom: 0;
  }
  .price-table-note-center { margin-top: 16px; padding: 13px 18px; }

  .vision-band { padding: 40px 26px; }

  .join-form { padding: 26px 22px; }
  .field-row { grid-template-columns: 1fr; gap: 0; }

  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* ---------- 小屏手机（<=480px） ---------- */
@media (max-width: 480px) {
  .container { width: calc(100% - 32px); }
  .brand-slogan { display: none; }

  .hero-actions .btn { width: 100%; }
  .hero-creds { flex-direction: column; gap: 10px; }

  .phone-mock { width: 100%; }
  .float-card { display: none; } /* 小屏隐藏浮动卡片，保持信息清晰 */

  .section { padding: 60px 0; }
  .section-head { margin-bottom: 42px; }

  .price-card { padding: 22px 20px 18px; }
  .price-total strong { font-size: 1.2rem; }

  .price-table tbody tr { padding: 13px 16px; }
  .price-table-note { padding: 13px 16px; font-size: 0.78rem; }
}

/* ---------- 动效减弱 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}