/* ==========================================================================
 * 万冷Club 官网（简洁版）· 全站共享样式
 * --------------------------------------------------------------------------
 * 取值来源：《万冷设计规范》——主色 primary-500 #10B981 / 600 #059669、
 * 卡片 rounded-2xl(16px) + border-gray-100 + shadow-card + p-6、
 * 图标容器 rounded-xl(12px)、按钮 rounded-xl(12px)、
 * 字号仅 12 / 14 / 16 / 18 / 20 / 24 / 36 / 48，主题色纯色平铺（禁止渐变）。
 * 全站唯一允许的渐变类样式：品牌区白色点阵纹理（两层 radial-gradient）。
 * 页面：index.html（站点主页）/ agreement.html（用户协议）/ privacy.html（隐私政策）
 * ========================================================================== */

:root {
  --primary-50:  #ECFDF5;
  --primary-100: #D1FAE5;
  --primary-200: #A7F3D0;
  --primary-400: #34D399;
  --primary-500: #10B981;
  --primary-600: #059669;
  --primary-700: #047857;
  --gray-50:  #F9FAFB;
  --gray-100: #F3F4F6;
  --gray-200: #E5E7EB;
  --gray-300: #D1D5DB;
  --gray-400: #9CA3AF;
  --gray-500: #6B7280;
  --gray-600: #4B5563;
  --gray-700: #374151;
  --gray-900: #111827;
  --blue-50: #EFF6FF;
  --blue-600: #2563EB;
  --warning-50: #FFF7ED;
  --warning-600: #EA580C;
  --red-50: #FEF2F2;
  --red-600: #DC2626;
  --shadow-card: 0 1px 3px 0 rgba(0, 0, 0, 0.05);
  --maxw: 1120px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB",
               "Microsoft YaHei", sans-serif;
  background: var(--gray-50);
  color: var(--gray-900);
  font-size: 14px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, p, dl, dd, dt, ul, ol, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
:focus-visible { outline: 2px solid var(--primary-400); outline-offset: 2px; border-radius: 4px; }
[hidden] { display: none !important; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.skip {
  position: absolute; left: -999px; top: 8px; z-index: 60;
  background: var(--primary-500); color: #fff; padding: 8px 16px;
  border-radius: 12px; font-weight: 500;
}
.skip:focus { left: 12px; }

/* ---------------------------------------------------------------- 顶部导航 */
.hd {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-100);
}
.hd-inner { display: flex; align-items: center; gap: 16px; height: 64px; }
.hd-brand { display: flex; align-items: center; gap: 10px; margin-right: auto; }
.hd-logo {
  width: 36px; height: 36px; border-radius: 12px; overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  background: var(--primary-500); color: #fff; font-weight: 600; font-size: 16px;
  border: 2px solid var(--gray-200);
  flex: none;
}
.hd-logo img { width: 100%; height: 100%; object-fit: cover; }
.hd-name { font-size: 18px; font-weight: 600; line-height: 1.2; min-width: 0; }
.hd-name > span:first-child { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.hd-by { display: block; font-size: 12px; color: var(--gray-500); font-weight: 400; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.hd-nav { display: flex; align-items: center; gap: 24px; }
.hd-nav a { font-size: 14px; color: var(--gray-600); transition: color .15s; }
.hd-nav a:hover { color: var(--primary-600); }
.hd-toggle {
  display: none; width: 40px; height: 40px; align-items: center; justify-content: center;
  background: none; border: 0; color: var(--gray-700); cursor: pointer; border-radius: 12px;
}
.hd-toggle svg { width: 22px; height: 22px; }
.hd-toggle .i-close { display: none; }
.hd.open .hd-toggle .i-menu { display: none; }
.hd.open .hd-toggle .i-close { display: block; }

@media (max-width: 900px) {
  .hd-nav {
    position: absolute; left: 0; right: 0; top: 64px;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--gray-100);
    padding: 8px 24px 16px; display: none;
  }
  .hd.open .hd-nav { display: flex; }
  .hd-nav a { padding: 12px 0; border-bottom: 1px solid var(--gray-100); font-size: 16px; }
  .hd-nav a:last-child { border-bottom: 0; }
  .hd-toggle { display: flex; }
}
/* 窄屏隐藏头部按钮（入口已在导航菜单中），避免标题与按钮互相挤压换行。
 * 用 .hd .hd-cta 提高权重，避免被文件后部的 .btn 基础样式覆盖。 */
@media (max-width: 760px) {
  .hd .hd-cta { display: none; }
}

/* ------------------------------------------------------------------- 区块 */
.sec { padding: 72px 0; border-top: 1px solid var(--gray-100); }
.sec:first-of-type { border-top: 0; }
.sec-head { max-width: 720px; margin-bottom: 32px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 500; color: var(--primary-600); letter-spacing: .04em;
}
.eyebrow::before {
  content: ""; width: 4px; height: 12px; border-radius: 2px; background: var(--primary-500);
}
.sec-title { margin-top: 10px; font-size: 24px; font-weight: 600; line-height: 1.4; }
.sec-sub { margin-top: 10px; font-size: 14px; color: var(--gray-500); }
.muted { color: var(--gray-500); }
.note { font-size: 12px; color: var(--gray-400); }

/* ------------------------------------------------------------------- 卡片 */
.card {
  background: #fff; border: 1px solid var(--gray-100); border-radius: 16px;
  box-shadow: var(--shadow-card); padding: 24px;
}
.card-hd { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.card-title { font-size: 16px; font-weight: 600; }
.card-sub { margin-top: 4px; font-size: 14px; color: var(--gray-500); }
.icon-tile {
  width: 40px; height: 40px; border-radius: 12px; flex: none;
  background: var(--primary-50); color: var(--primary-600);
  display: flex; align-items: center; justify-content: center;
}
.icon-tile svg { width: 20px; height: 20px; }
.icon-tile.info { background: var(--blue-50); color: var(--blue-600); }

.badge {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 12px; padding: 2px 8px; border-radius: 9999px;
  background: var(--primary-50); color: var(--primary-600);
}
.badge.info { background: var(--blue-50); color: var(--blue-600); }
.badge.warn { background: var(--warning-50); color: var(--warning-600); }

/* ------------------------------------------------------------------- 按钮 */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 44px; padding: 0 20px; border-radius: 12px; border: 1px solid transparent;
  font-size: 14px; font-weight: 500; font-family: inherit; cursor: pointer;
  transition: background-color .15s, color .15s, border-color .15s;
}
.btn svg { width: 18px; height: 18px; }
.btn-primary { background: var(--primary-500); color: #fff; }
.btn-primary:hover { background: var(--primary-600); }
.btn-ghost { background: #fff; border-color: var(--gray-200); color: var(--gray-700); }
.btn-ghost:hover { border-color: var(--primary-500); color: var(--primary-600); }

/* --------------------------------------------------------------- 首屏 Hero */
.hero { padding: 56px 0 64px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
.hero-title { margin-top: 12px; font-size: 48px; font-weight: 700; line-height: 1.15; letter-spacing: -.01em; }
.hero-lead { margin-top: 16px; font-size: 16px; color: var(--gray-600); max-width: 520px; }
.hero-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.hero-chip {
  font-size: 12px; padding: 4px 10px; border-radius: 9999px;
  background: #fff; border: 1px solid var(--gray-200); color: var(--gray-600);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

/* 品牌面板（点阵纹理为全站唯一渐变，与设计规范一致） */
.hero-visual { position: relative; }
.hero-panel {
  position: relative; overflow: hidden; border-radius: 16px;
  background: var(--primary-600); padding: 32px 32px 0;
  display: flex; justify-content: center;
}
.hero-shot {
  position: relative; width: 250px; max-width: 76%;
  border-radius: 16px 16px 0 0; box-shadow: 0 -1px 0 0 rgba(255, 255, 255, .3);
  overflow: hidden; background: #fff;
}
.hero-shot img { width: 100%; }
.hero-shot-cap {
  margin-top: 12px; text-align: center;
  font-size: 12px; color: var(--gray-500);
}
.hero-shot-cap b { color: var(--gray-900); font-weight: 500; }

/* 白色点阵纹理（全站唯一允许的渐变类装饰，仅铺在品牌绿底上） */
.dot-tex {
  position: absolute; inset: 0; opacity: .2; pointer-events: none;
  background-image:
    radial-gradient(circle at 25% 25%, #fff 1px, transparent 1px),
    radial-gradient(circle at 75% 75%, #fff 1px, transparent 1px);
  background-size: 40px 40px;
}

/* ---------------------------------------------------------- 应用信息 fact */
.facts {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1px; background: var(--gray-100);
  border: 1px solid var(--gray-100); border-radius: 16px; overflow: hidden;
  box-shadow: var(--shadow-card);
}
.fact { background: #fff; padding: 18px 20px; }
.fact dt { font-size: 12px; color: var(--gray-500); }
.fact dd { margin-top: 4px; font-size: 14px; font-weight: 500; }
.fact dd a { color: var(--primary-600); }
.fact dd a:hover { color: var(--primary-700); }

/* --------------------------------------------------------- 应用介绍两栏 */
/* 卡片等高（同一排卡片顶部与底部对齐） */
.intro-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 24px; }
/* 应用介绍单栏：限制正文行宽，避免长行影响阅读 */
.intro-single { max-width: 880px; }
.prose p + p { margin-top: 14px; }
.prose { font-size: 14px; color: var(--gray-600); }
.prose strong { color: var(--gray-900); font-weight: 600; }
.kv-list { margin-top: 14px; }
.kv-row {
  display: flex; gap: 12px; padding: 12px 0; font-size: 14px;
  border-top: 1px solid var(--gray-100);
}
.kv-row:first-child { border-top: 0; padding-top: 0; }
.kv-row dt { width: 88px; flex: none; color: var(--gray-500); }
.kv-row dd { color: var(--gray-900); font-weight: 500; }

/* ------------------------------------------------------------- 功能三端 */
.roles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.role { display: flex; flex-direction: column; }
.role-head { display: flex; align-items: center; gap: 12px; }
.role-title { display: block; font-size: 16px; font-weight: 600; }
.role-sub { display: block; font-size: 12px; color: var(--gray-500); }
.role-list { margin-top: 16px; display: flex; flex-direction: column; gap: 10px; }
.role-list li {
  position: relative; padding-left: 16px; font-size: 14px; color: var(--gray-600); line-height: 1.6;
}
.role-list li::before {
  content: ""; position: absolute; left: 0; top: 9px;
  width: 5px; height: 5px; border-radius: 50%; background: var(--primary-500);
}
.role-list li b { color: var(--gray-900); font-weight: 500; }

/* ------------------------------------------------------------- 服务流程 */
.steps {
  display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; margin-top: 24px;
}
.step { position: relative; padding-top: 16px; border-top: 2px solid var(--gray-100); }
.step-num { font-size: 12px; font-weight: 600; color: var(--primary-600); letter-spacing: .06em; }
.step-title { display: block; margin-top: 6px; font-size: 14px; font-weight: 600; }
.step-desc { display: block; margin-top: 4px; font-size: 12px; color: var(--gray-500); line-height: 1.6; }

/* ------------------------------------------------------------- 规格说明 */
.specs { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 32px; margin-top: 8px; }
.spec { display: flex; gap: 12px; padding: 12px 0; border-top: 1px solid var(--gray-100); font-size: 14px; }
.spec dt { width: 96px; flex: none; color: var(--gray-500); }
.spec dd { color: var(--gray-700); }

/* --------------------------------------------------------------- 应用图片 */
.shots { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.shot { display: flex; flex-direction: column; gap: 10px; }
.shot-img {
  border: 1px solid var(--gray-100); border-radius: 16px; overflow: hidden;
  background: #fff; box-shadow: var(--shadow-card);
}
.shot-img img { width: 100%; }
.shot-cap { font-size: 12px; color: var(--gray-500); text-align: center; }
.shot-cap b { display: block; font-size: 14px; font-weight: 500; color: var(--gray-900); }

/* ------------------------------------------------------------- 保障清单 */
.safety { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.safe-item { display: flex; gap: 12px; align-items: flex-start; }
.safe-title { font-size: 16px; font-weight: 600; }
.safe-desc { margin-top: 4px; font-size: 14px; color: var(--gray-500); }

/* --------------------------------------------------------------- 协议入口 */
.docs { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.doc-card { display: flex; gap: 12px; align-items: flex-start; }
.doc-card a { color: var(--primary-600); font-weight: 500; }
.doc-card a:hover { color: var(--primary-700); }

/* ------------------------------------------------------------- 联系方式 */
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.info-list li { display: flex; align-items: center; gap: 12px; padding: 12px 0; }
.info-list li + li { border-top: 1px solid var(--gray-100); }
.info-label { display: block; font-size: 12px; color: var(--gray-500); }
.info-value { display: block; margin-top: 2px; font-size: 14px; font-weight: 500; }
a.info-value:hover { color: var(--primary-600); }

/* ------------------------------------------------------------------ 页脚 */
.ft { border-top: 1px solid var(--gray-100); background: #fff; padding: 40px 0 32px; }
.ft-grid { display: flex; flex-wrap: wrap; gap: 24px; align-items: flex-start; }
.ft-brand { display: flex; align-items: center; gap: 10px; margin-right: auto; }
.ft-nav { display: flex; flex-wrap: wrap; gap: 8px 20px; font-size: 14px; color: var(--gray-500); }
.ft-nav a:hover { color: var(--primary-600); }
.ft-bottom {
  margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--gray-100);
  font-size: 12px; color: var(--gray-500); display: flex; flex-wrap: wrap;
  gap: 8px 12px; align-items: center;
}
.ft-bottom a { color: var(--gray-500); }
.ft-bottom a:hover { color: var(--primary-600); }
.ft-sep { color: var(--gray-300); margin: 0 10px; }

/* --------------------------------------------------- 协议页（长文排版） */
.doc { max-width: 820px; margin: 0 auto; }
.doc-title { font-size: 24px; font-weight: 600; }
.doc-meta { margin-top: 8px; font-size: 12px; color: var(--gray-500); }
.doc h2 {
  margin-top: 32px; padding-top: 20px; border-top: 1px solid var(--gray-100);
  font-size: 16px; font-weight: 600;
}
.doc h2:first-of-type { border-top: 0; padding-top: 0; }
.doc h3 { margin-top: 16px; font-size: 14px; font-weight: 600; }
.doc p, .doc li { font-size: 14px; color: var(--gray-600); }
.doc p { margin-top: 10px; }
.doc ul, .doc ol { margin-top: 8px; display: flex; flex-direction: column; gap: 6px; }
.doc li { position: relative; padding-left: 16px; }
.doc ul li::before {
  content: ""; position: absolute; left: 0; top: 9px;
  width: 5px; height: 5px; border-radius: 50%; background: var(--primary-500);
}
.doc ol { counter-reset: doc-ol; }
.doc ol li { padding-left: 22px; }
.doc ol li::before {
  counter-increment: doc-ol; content: counter(doc-ol) ".";
  position: absolute; left: 0; color: var(--primary-600); font-weight: 500;
}
.doc strong { color: var(--gray-900); font-weight: 600; }
.doc a { color: var(--primary-600); }
.doc a:hover { color: var(--primary-700); }
.doc-note {
  margin-top: 24px; background: var(--primary-50); border-radius: 12px; padding: 16px;
  font-size: 14px; color: var(--primary-700);
}
.back-link { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; color: var(--gray-500); }
.back-link svg { width: 18px; height: 18px; }
.back-link:hover { color: var(--primary-600); }

/* ============================================================ 公司首页（原页面改造）
 * 保留原「左侧品牌区 + 右侧信息卡 + 底部备案栏」结构，
 * 加入装饰元素（品牌绿点阵面板、项目入口面板、图标块）与万冷Club 项目入口。
 * ==================================================================== */
.portal { display: grid; grid-template-columns: minmax(0, 46fr) minmax(0, 54fr); min-height: 100vh; }

.portal-brand {
  position: relative; overflow: hidden;
  background: var(--primary-600); color: #fff;
  display: flex; flex-direction: column; justify-content: center;
  padding: 56px 48px;
}
.portal-brand > :not(.dot-tex) { position: relative; z-index: 1; }
.portal-title { font-size: 36px; font-weight: 700; line-height: 1.25; letter-spacing: -.01em; }
.portal-title .en { display: block; margin-top: 8px; font-size: 20px; font-weight: 400; color: rgba(255, 255, 255, .85); }

/* 品牌面板内的「联系我们」（原标语 / 标签位置） */
.portal-contact { margin-top: 28px; }
.portal-contact h2 { font-size: 16px; font-weight: 600; color: #fff; }
.portal-contact ul { margin-top: 6px; max-width: 400px; }
.portal-contact li {
  display: flex; gap: 12px; padding: 10px 0; font-size: 14px;
  border-top: 1px solid rgba(255, 255, 255, .18);
}
.portal-contact li:first-child { border-top: 0; padding-top: 2px; }
.portal-contact .k { width: 52px; flex: none; color: rgba(255, 255, 255, .72); }
.portal-contact .v { color: #fff; word-break: break-all; }
.portal-contact a.v { transition: opacity .15s; }
.portal-contact a.v:hover { opacity: .8; text-decoration: underline; }

.portal-main {
  padding: 48px 24px; background: var(--gray-50);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 16px;
}
.portal-main > * { width: 100%; max-width: 520px; }

/* 万冷Club 项目入口：品牌绿面板 + 界面缩略图 + 进入按钮 */
.entry {
  position: relative; overflow: hidden; border-radius: 16px;
  background: var(--primary-600); color: #fff; padding: 24px;
}
.entry > :not(.dot-tex) { position: relative; z-index: 1; }
.entry-head { display: flex; align-items: center; gap: 14px; }
.entry-mark {
  width: 56px; height: 56px; border-radius: 16px; flex: none; overflow: hidden;
  background: rgba(255, 255, 255, .2);
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; font-weight: 700;
  border: 2px solid var(--gray-200);
}
.entry-mark img { width: 100%; height: 100%; object-fit: cover; }
.entry-name { font-size: 20px; font-weight: 600; }
.entry-type { display: block; font-size: 12px; font-weight: 400; color: rgba(255, 255, 255, .8); }
.entry-desc { margin-top: 16px; font-size: 14px; color: rgba(255, 255, 255, .88); }
.entry-thumbs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 16px; }
.entry-thumb {
  border-radius: 12px; overflow: hidden; background: #fff;
  border: 1px solid rgba(255, 255, 255, .3);
}
.entry-thumb img { width: 100%; }
.entry-actions { display: flex; align-items: center; gap: 12px; margin-top: 18px; }
.entry-actions .btn-primary { background: #fff; color: var(--primary-700); }
.entry-actions .btn-primary:hover { background: var(--primary-50); }
.entry-actions .entry-more { font-size: 12px; color: rgba(255, 255, 255, .8); }
.portal-filing { font-size: 12px; color: var(--gray-500); text-align: center; line-height: 1.9; }
.portal-filing a { color: var(--gray-500); }
.portal-filing a:hover { color: var(--primary-600); }

@media (max-width: 1023px) {
  .portal { grid-template-columns: 1fr; min-height: 0; }
  .portal-brand { padding: 40px 24px; gap: 24px; }
  .portal-title { font-size: 24px; }
  .portal-main { padding: 24px 16px 32px; }
}
@media (max-width: 640px) {
  .portal-title { font-size: 24px; }
  .entry-thumbs { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  /* 窄屏下按钮与说明分行铺满，避免文字被挤成两行 */
  .entry-actions { flex-direction: column; align-items: stretch; gap: 10px; }
  .entry-actions .btn { width: 100%; }
  .entry-actions .entry-more { text-align: center; }
}

/* --------------------------------------------------------------- 响应式 */
@media (max-width: 1080px) {
  /* 概览格共 8 项：4 列（2 行）/ 2 列（4 行）都能铺满，避免出现空位 */
  .facts { grid-template-columns: repeat(2, 1fr); }
  .shots { grid-template-columns: repeat(3, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 900px) {
  .hero { padding: 40px 0 48px; }
  .sec { padding: 56px 0; }
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero-title { font-size: 36px; }
  .intro-grid, .contact { grid-template-columns: 1fr; }
  .roles, .safety { grid-template-columns: 1fr; }
  .docs { grid-template-columns: 1fr; }
  .specs { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .facts { grid-template-columns: repeat(2, 1fr); }
  .shots { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .hero-title { font-size: 36px; }
  .sec-title { font-size: 20px; }
  .card { padding: 20px; }
  .hero-panel { padding: 24px 24px 0; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}