/* ============================================================
   零克工具集 v3.1 · 国内互联网效率工具平台
   白色 / 浅灰蓝 / 品牌红，功能优先、信息紧凑、轻量动效
   ============================================================ */

:root {
  --brand: #ff2442;
  --brand-hover: #e91435;
  --brand-soft: #fff1f3;
  --brand-line: #ffd5dc;
  --orange: #ff8a3d;
  --orange-soft: #fff4ea;
  --blue: #3d7eff;
  --blue-soft: #eef4ff;
  --cyan: #24b6a8;
  --ink: #1f2329;
  --text: #34383f;
  --muted: #646a73;
  --light-text: #8f959e;
  --bg: #f6f8fb;
  --surface: #ffffff;
  --surface-soft: #fafbfc;
  --border: #e7e9ee;
  --border-dark: #d9dce3;
  --shadow-sm: 0 4px 16px rgba(31, 35, 41, .05);
  --shadow-md: 0 12px 36px rgba(31, 35, 41, .08);
  --shadow-brand: 0 10px 28px rgba(255, 36, 66, .22);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --container: min(1200px, calc(100% - 48px));
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 86px; }
body {
  margin: 0;
  overflow-x: hidden;
  color: var(--text);
  background: var(--surface);
  font-family: var(--font);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, summary, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid rgba(255, 36, 66, .42); outline-offset: 3px; }
::selection { color: #fff; background: var(--brand); }
.page-container { width: var(--container); margin-inline: auto; }

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 999;
  padding: 9px 15px;
  color: #fff;
  background: var(--ink);
  border-radius: 8px;
  transform: translateY(-150%);
  transition: transform .2s ease;
}
.skip-link:focus { transform: translateY(0); }

/* 顶部导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: 68px;
  background: rgba(255, 255, 255, .92);
  border-bottom: 1px solid rgba(231, 233, 238, .88);
  backdrop-filter: blur(16px) saturate(150%);
}
.nav-container {
  width: var(--container);
  height: 100%;
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 28px;
}
.brand { justify-self: start; display: flex; align-items: center; gap: 10px; }
.brand-logo { width: 38px; height: 38px; display: grid; place-items: center; overflow: visible; background: transparent; border: 0; border-radius: 0; box-shadow: none; }
.brand-logo img { width: 38px; height: 38px; object-fit: contain; }
.brand-name { color: var(--ink); font-size: 17px; font-weight: 700; letter-spacing: .01em; }
.main-nav { display: flex; align-items: center; justify-content: center; gap: 32px; }
.main-nav a { position: relative; padding-block: 23px; color: var(--muted); font-size: 14px; transition: color .2s ease; }
.main-nav a::after { position: absolute; right: 0; bottom: -1px; left: 0; height: 2px; content: ""; background: var(--brand); transform: scaleX(0); transition: transform .2s ease; }
.main-nav a:hover { color: var(--ink); }
.main-nav a:hover::after { transform: scaleX(1); }
.nav-actions { justify-self: end; display: flex; align-items: center; gap: 18px; }
.nav-club { color: var(--muted); font-size: 13px; }
.nav-club:hover { color: var(--brand); }
.nav-official { padding: 9px 15px; color: #fff; background: var(--brand); border-radius: 8px; font-size: 13px; font-weight: 600; box-shadow: 0 5px 14px rgba(255, 36, 66, .16); transition: background .2s ease, transform .2s ease; }
.nav-official:hover { background: var(--brand-hover); transform: translateY(-1px); }

/* 首屏 */
.hero {
  position: relative;
  min-height: 680px;
  overflow: hidden;
  background:
    linear-gradient(180deg, #fff 0%, #fafbff 55%, #f5f7fb 100%);
}
.hero::before { position: absolute; inset: 0; content: ""; opacity: .42; background-image: radial-gradient(#cdd2dc 1px, transparent 1px); background-size: 22px 22px; mask-image: linear-gradient(to bottom, #000, transparent 84%); }
.hero-glow { position: absolute; border-radius: 50%; filter: blur(2px); pointer-events: none; }
.hero-glow-one { top: -220px; right: -120px; width: 620px; height: 620px; background: radial-gradient(circle, rgba(255, 36, 66, .11), rgba(255, 36, 66, 0) 70%); }
.hero-glow-two { bottom: -260px; left: -120px; width: 600px; height: 600px; background: radial-gradient(circle, rgba(61, 126, 255, .1), rgba(61, 126, 255, 0) 70%); }
.hero-container { position: relative; z-index: 2; min-height: 680px; padding-block: 72px 68px; display: grid; grid-template-columns: minmax(0, 1fr) minmax(500px, 1fr); align-items: center; gap: 58px; }
.upgrade-pill { width: fit-content; margin-bottom: 22px; padding: 6px 12px 6px 7px; display: flex; align-items: center; gap: 8px; color: var(--brand-hover); background: var(--brand-soft); border: 1px solid var(--brand-line); border-radius: 999px; font-size: 12px; font-weight: 600; }
.upgrade-pill span { width: 23px; height: 23px; display: grid; place-items: center; color: #fff; background: var(--brand); border-radius: 50%; font-size: 11px; }
.hero-copy h1 { margin: 0; color: var(--ink); font-size: clamp(44px, 4.05vw, 58px); font-weight: 800; line-height: 1.2; letter-spacing: -.04em; }
.hero-copy h1 em { color: var(--brand); font-style: normal; white-space: nowrap; }
.mobile-break { display: none; }
.hero-copy > p { max-width: 610px; margin: 25px 0 0; color: var(--muted); font-size: 17px; line-height: 1.9; }
.hero-actions { margin-top: 32px; display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.primary-button, .secondary-button { min-height: 48px; padding: 12px 22px; display: inline-flex; align-items: center; justify-content: center; gap: 18px; border-radius: 9px; font-size: 14px; font-weight: 600; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.primary-button { color: #fff; background: var(--brand); box-shadow: var(--shadow-brand); }
.primary-button:hover { background: var(--brand-hover); box-shadow: 0 13px 32px rgba(255, 36, 66, .28); transform: translateY(-2px); }
.secondary-button { color: var(--text); background: #fff; border: 1px solid var(--border-dark); }
.secondary-button:hover { color: var(--brand); border-color: var(--brand-line); transform: translateY(-2px); }
.hero-trust { margin-top: 29px; display: flex; flex-wrap: wrap; gap: 12px 22px; color: var(--light-text); font-size: 12px; }
.hero-trust span { display: flex; align-items: center; gap: 6px; }
.hero-trust i { width: 16px; height: 16px; display: grid; place-items: center; color: var(--cyan); background: #e9f8f5; border-radius: 50%; font-size: 10px; font-style: normal; font-weight: 800; }

.workspace-preview { position: relative; padding: 20px; background: linear-gradient(135deg, #f0f4ff, #fff2f5); border: 1px solid rgba(214, 219, 231, .8); border-radius: 28px; box-shadow: 0 28px 70px rgba(31, 35, 41, .12); }
.workspace-window { position: relative; z-index: 2; overflow: hidden; background: #fff; border: 1px solid var(--border); border-radius: 18px; box-shadow: 0 10px 30px rgba(31, 35, 41, .08); }
.workspace-header { height: 54px; padding: 0 18px; display: flex; align-items: center; justify-content: space-between; background: #fff; border-bottom: 1px solid var(--border); }
.workspace-brand { display: flex; align-items: center; gap: 8px; color: var(--ink); font-size: 13px; font-weight: 600; }
.workspace-brand img { width: 24px; height: 24px; border-radius: 7px; }
.online-status { display: flex; align-items: center; gap: 6px; color: var(--light-text); font-size: 10px; }
.online-status i { width: 7px; height: 7px; background: #38c172; border-radius: 50%; box-shadow: 0 0 0 4px rgba(56, 193, 114, .1); }
.workspace-body { padding: 22px; background: var(--surface-soft); }
.workspace-greeting { margin: 0 0 13px; color: var(--ink); font-size: 16px; font-weight: 700; }
.workspace-search { height: 42px; padding: 0 12px; display: flex; align-items: center; gap: 9px; color: var(--light-text); background: #fff; border: 1px solid var(--border); border-radius: 9px; font-size: 11px; }
.workspace-search > span:first-child { color: var(--muted); font-size: 21px; line-height: 1; transform: rotate(-18deg); }
.workspace-search kbd { margin-left: auto; padding: 2px 6px; color: var(--light-text); background: var(--bg); border: 1px solid var(--border); border-radius: 4px; font-family: var(--font); font-size: 9px; }
.workspace-tools { margin-top: 13px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 9px; }
.workspace-tool { min-width: 0; padding: 13px 10px; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 8px; background: #fff; border: 1px solid var(--border); border-radius: 10px; transition: border-color .2s ease, transform .2s ease, box-shadow .2s ease; }
.workspace-tool:hover { border-color: var(--tool-color); box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.workspace-tool--red { --tool-color: var(--brand); --tool-soft: var(--brand-soft); }
.workspace-tool--orange { --tool-color: var(--orange); --tool-soft: var(--orange-soft); }
.workspace-tool--blue { --tool-color: var(--blue); --tool-soft: var(--blue-soft); }
.mini-icon { width: 34px; height: 34px; display: grid; place-items: center; color: var(--tool-color); background: var(--tool-soft); border-radius: 9px; font-size: 14px; font-weight: 800; }
.workspace-tool > span:nth-child(2) { min-width: 0; display: flex; flex-direction: column; line-height: 1.35; }
.workspace-tool strong { overflow: hidden; color: var(--ink); font-size: 11px; text-overflow: ellipsis; white-space: nowrap; }
.workspace-tool small { margin-top: 4px; color: var(--light-text); font-size: 9px; }
.workspace-tool b { color: var(--light-text); font-size: 16px; }
.workspace-tip { margin-top: 12px; padding: 11px 13px; display: flex; align-items: center; gap: 10px; background: linear-gradient(90deg, #fff7e8, #fff); border: 1px solid #ffe6b8; border-radius: 10px; }
.workspace-tip > span { font-size: 18px; }
.workspace-tip p { margin: 0; color: var(--muted); font-size: 9px; line-height: 1.45; }
.workspace-tip p strong { color: var(--text); font-size: 10px; }
.workspace-tip a { margin-left: auto; color: var(--brand); font-size: 10px; font-weight: 600; }
.preview-decoration { position: absolute; z-index: 1; border-radius: 50%; }
.preview-decoration-one { top: -18px; right: 45px; width: 72px; height: 72px; background: rgba(255, 36, 66, .13); }
.preview-decoration-two { bottom: -24px; left: 38px; width: 95px; height: 95px; background: rgba(61, 126, 255, .12); }

/* 通用区块标题 */
.section-title { max-width: 720px; }
.section-title-center { margin-inline: auto; text-align: center; }
.title-tag { display: inline-flex; align-items: center; gap: 7px; margin-bottom: 13px; color: var(--brand); font-size: 13px; font-weight: 600; }
.title-tag::before { width: 18px; height: 3px; content: ""; background: var(--brand); border-radius: 999px; }
.section-title-center .title-tag::before { display: none; }
.section-title h2, .tools-heading h2, .workflow-intro h2, .updates-copy h2 { margin: 0; color: var(--ink); font-size: clamp(31px, 3vw, 42px); font-weight: 700; line-height: 1.35; letter-spacing: -.025em; }
.section-title > p { margin: 14px 0 0; color: var(--muted); font-size: 15px; }

/* 用户帮助 */
.help-section { padding-block: 88px; background: #fff; }
.help-grid { margin-top: 44px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.help-card { min-height: 205px; padding: 24px; display: flex; gap: 17px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease; }
.help-card:hover { border-color: var(--card-line); box-shadow: var(--shadow-md); transform: translateY(-4px); }
.help-card--red { --card-color: var(--brand); --card-soft: var(--brand-soft); --card-line: var(--brand-line); }
.help-card--orange { --card-color: var(--orange); --card-soft: var(--orange-soft); --card-line: #ffd9bd; }
.help-card--blue { --card-color: var(--blue); --card-soft: var(--blue-soft); --card-line: #cfddff; }
.help-icon { width: 48px; height: 48px; flex: 0 0 auto; display: grid; place-items: center; color: var(--card-color); background: var(--card-soft); border-radius: 13px; font-size: 18px; font-weight: 800; }
.help-content > span { color: var(--light-text); font-size: 11px; }
.help-content h3 { margin: 3px 0 12px; color: var(--ink); font-size: 19px; }
.help-change { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.help-change small { color: var(--light-text); font-size: 11px; text-decoration: line-through; }
.help-change i { color: var(--card-color); font-size: 12px; font-style: normal; }
.help-change strong { color: var(--card-color); font-size: 12px; }
.help-content p { margin: 11px 0 0; color: var(--muted); font-size: 12px; line-height: 1.75; }

/* 按场景找工具 */
.scene-section { padding-block: 84px; background: var(--bg); }
.scene-grid { margin-top: 38px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.scene-card { --scene-color: var(--brand); --scene-soft: var(--brand-soft); position: relative; min-height: 275px; padding: 25px; overflow: hidden; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md); transition: border-color .25s ease, transform .25s ease, box-shadow .25s ease; }
.scene-card::after { position: absolute; right: -42px; bottom: -48px; width: 145px; height: 145px; content: ""; background: var(--scene-soft); border-radius: 50%; }
.scene-card--orange { --scene-color: var(--orange); --scene-soft: var(--orange-soft); }
.scene-card--blue { --scene-color: var(--blue); --scene-soft: var(--blue-soft); }
.scene-card:hover { border-color: var(--scene-color); box-shadow: var(--shadow-md); transform: translateY(-4px); }
.scene-top { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; }
.scene-icon { width: 43px; height: 43px; display: grid; place-items: center; color: var(--scene-color); background: var(--scene-soft); border-radius: 12px; font-size: 16px; font-weight: 800; }
.scene-top small { color: #c4c8cf; font-size: 11px; }
.scene-label { position: relative; z-index: 1; display: block; margin-top: 24px; color: var(--scene-color); font-size: 11px; font-weight: 600; }
.scene-card h3 { position: relative; z-index: 1; margin: 5px 0 10px; color: var(--ink); font-size: 20px; }
.scene-card p { position: relative; z-index: 1; min-height: 50px; margin: 0; color: var(--muted); font-size: 12px; line-height: 1.75; }
.scene-card > strong { position: relative; z-index: 1; margin-top: 21px; display: inline-flex; align-items: center; gap: 7px; color: var(--scene-color); font-size: 12px; }
.scene-card > strong i { font-style: normal; transition: transform .2s ease; }
.scene-card:hover > strong i { transform: translateX(4px); }

/* 工具目录 */
.tools-section { padding-block: 92px 105px; background: #fff; }
.tools-heading { display: flex; justify-content: space-between; align-items: end; gap: 40px; }
.tool-count { min-width: 130px; padding: 12px 17px; display: flex; align-items: center; gap: 11px; background: var(--brand-soft); border-radius: 12px; }
.tool-count strong { color: var(--brand); font-size: 30px; line-height: 1; }
.tool-count span { color: var(--muted); font-size: 11px; }
.tool-grid { margin-top: 43px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; align-items: start; }
.tool-card { --tool-color: var(--brand); --tool-soft: var(--brand-soft); --tool-line: var(--brand-line); overflow: hidden; background: #fff; border: 1px solid var(--border); border-radius: 18px; box-shadow: var(--shadow-sm); scroll-margin-top: 88px; transition: border-color .25s ease, transform .25s ease, box-shadow .25s ease; }
.tool-card--orange { --tool-color: var(--orange); --tool-soft: var(--orange-soft); --tool-line: #ffd9bd; }
.tool-card--blue { --tool-color: var(--blue); --tool-soft: var(--blue-soft); --tool-line: #cfddff; }
.tool-card:target { border-color: var(--tool-color); box-shadow: 0 0 0 4px var(--tool-soft), var(--shadow-md); }
.tool-card:hover { border-color: var(--tool-line); box-shadow: var(--shadow-md); transform: translateY(-5px); }
.tool-card-top { height: 76px; padding: 18px 20px 0; display: flex; align-items: flex-start; justify-content: space-between; background: linear-gradient(180deg, var(--tool-soft), #fff); }
.tool-icon { width: 52px; height: 52px; display: grid; place-items: center; color: #fff; background: var(--tool-color); border-radius: 14px; font-size: 20px; font-weight: 800; box-shadow: 0 8px 18px color-mix(in srgb, var(--tool-color) 22%, transparent); }
.tool-status { display: flex; align-items: center; gap: 6px; padding: 5px 9px; color: var(--muted); background: rgba(255,255,255,.8); border: 1px solid var(--border); border-radius: 999px; font-size: 9px; }
.tool-status i { width: 6px; height: 6px; background: #31bd6b; border-radius: 50%; }
.tool-title { padding: 15px 20px 20px; }
.tool-title > span { color: var(--tool-color); font-size: 11px; font-weight: 600; }
.tool-title h3 { margin: 3px 0 8px; color: var(--ink); font-size: 24px; }
.tool-title p { min-height: 65px; margin: 0; color: var(--muted); font-size: 12px; line-height: 1.8; }
.tool-benefit { margin: 0 14px; padding: 15px; background: var(--surface-soft); border: 1px solid var(--border); border-radius: 11px; }
.tool-benefit > span { display: block; color: var(--light-text); font-size: 9px; }
.tool-benefit strong { display: block; margin-top: 2px; color: var(--ink); font-size: 16px; }
.tool-benefit p { margin: 5px 0 0; color: var(--muted); font-size: 10px; line-height: 1.65; }
.tool-capabilities { min-height: 119px; margin: 17px 20px 14px; padding: 0; list-style: none; }
.tool-capabilities li { padding: 5px 0; display: flex; gap: 8px; color: var(--text); font-size: 11px; }
.tool-capabilities i { width: 16px; height: 16px; display: grid; place-items: center; flex: 0 0 auto; color: var(--tool-color); background: var(--tool-soft); border-radius: 50%; font-size: 9px; font-style: normal; }
.tool-details { border-top: 1px solid var(--border); }
.tool-details summary { min-height: 48px; padding: 11px 20px; display: flex; align-items: center; justify-content: space-between; color: var(--muted); cursor: pointer; font-size: 11px; list-style: none; }
.tool-details summary::-webkit-details-marker { display: none; }
.tool-details summary i { position: relative; width: 18px; height: 18px; border: 1px solid var(--border-dark); border-radius: 50%; }
.tool-details summary i::before, .tool-details summary i::after { position: absolute; top: 8px; left: 4px; width: 8px; height: 1px; content: ""; background: var(--muted); transition: transform .2s ease; }
.tool-details summary i::after { transform: rotate(90deg); }
.tool-details[open] summary i::after { transform: rotate(0); }
.best-for { padding: 0 20px 16px; display: flex; flex-wrap: wrap; gap: 6px; }
.best-for span { padding: 4px 8px; color: var(--muted); background: var(--bg); border-radius: 5px; font-size: 9px; }
.tool-button { min-height: 53px; padding: 13px 20px; display: flex; align-items: center; justify-content: space-between; color: #fff; background: var(--tool-color); font-size: 12px; font-weight: 600; transition: filter .2s ease; }
.tool-button b { font-size: 17px; transition: transform .2s ease; }
.tool-button:hover { filter: brightness(.94); }
.tool-button:hover b { transform: translate(3px, -3px); }
.noscript { margin-top: 20px; padding: 16px; color: var(--muted); background: var(--bg); border-radius: 10px; }

/* 工作流 */
.workflow-section { position: relative; padding-block: 92px; overflow: hidden; color: #fff; background: linear-gradient(135deg, #232833 0%, #1c2029 100%); }
.workflow-section::before { position: absolute; top: -180px; right: -80px; width: 480px; height: 480px; content: ""; background: radial-gradient(circle, rgba(255,36,66,.2), transparent 68%); }
.workflow-container { position: relative; z-index: 1; display: grid; grid-template-columns: .72fr 1.28fr; align-items: center; gap: 75px; }
.title-tag-light { color: #ff8a9c; }
.title-tag-light::before { background: #ff8a9c; }
.workflow-intro h2 { color: #fff; }
.workflow-intro > p { max-width: 470px; margin: 18px 0 0; color: rgba(255,255,255,.58); font-size: 13px; line-height: 1.85; }
.workflow-list { margin: 0; padding: 0; list-style: none; }
.workflow-item { display: grid; grid-template-columns: 40px 1fr; gap: 14px; }
.workflow-step { display: flex; flex-direction: column; align-items: center; }
.workflow-step span { width: 32px; height: 32px; display: grid; place-items: center; color: #fff; background: var(--brand); border-radius: 50%; font-size: 10px; font-weight: 600; }
.workflow-step i { width: 1px; flex: 1; min-height: 26px; background: rgba(255,255,255,.16); }
.workflow-card { --flow-color: var(--brand); --flow-soft: rgba(255,36,66,.16); margin-bottom: 13px; padding: 17px; display: flex; gap: 14px; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.1); border-radius: 13px; transition: background .2s ease, transform .2s ease; }
.workflow-card--orange { --flow-color: var(--orange); --flow-soft: rgba(255,138,61,.16); }
.workflow-card--blue { --flow-color: #6da0ff; --flow-soft: rgba(61,126,255,.16); }
.workflow-card:hover { background: rgba(255,255,255,.09); transform: translateX(4px); }
.workflow-icon { width: 41px; height: 41px; flex: 0 0 auto; display: grid; place-items: center; color: var(--flow-color); background: var(--flow-soft); border-radius: 11px; font-weight: 800; }
.workflow-card small { color: var(--flow-color); font-size: 9px; }
.workflow-card h3 { margin: 1px 0 5px; color: #fff; font-size: 15px; }
.workflow-card p { margin: 0; color: rgba(255,255,255,.52); font-size: 10px; line-height: 1.65; }
.workflow-card a { display: inline-block; margin-top: 7px; color: rgba(255,255,255,.82); font-size: 9px; }

/* 对比表 */
.comparison-section { padding-block: 94px; background: var(--bg); }
.comparison-card { margin-top: 42px; overflow-x: auto; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }
.comparison-table { width: 100%; min-width: 800px; border-collapse: collapse; text-align: left; }
.comparison-table th, .comparison-table td { padding: 18px 21px; border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); font-size: 12px; }
.comparison-table tr:last-child th, .comparison-table tr:last-child td { border-bottom: 0; }
.comparison-table th:last-child, .comparison-table td:last-child { border-right: 0; }
.comparison-table thead th { color: var(--ink); background: #fafbfc; }
.comparison-table thead th:first-child { color: var(--light-text); font-size: 11px; }
.comparison-table thead th:not(:first-child) { min-width: 205px; }
.table-icon { width: 31px; height: 31px; margin-right: 9px; display: inline-grid; place-items: center; color: #fff; background: var(--brand); border-radius: 8px; font-size: 12px; vertical-align: middle; }
.table-icon--orange { background: var(--orange); }
.table-icon--blue { background: var(--blue); }
.comparison-table tbody th { color: var(--light-text); background: #fcfcfd; font-size: 11px; font-weight: 500; }
.comparison-table tbody td { color: var(--muted); }
.table-actions a { color: var(--brand); font-weight: 600; }
.table-actions a:hover { text-decoration: underline; text-underline-offset: 3px; }

/* 持续更新 */
.updates-section { padding-block: 90px; background: #fff; }
.updates-card { min-height: 410px; padding: 52px 60px; display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: 70px; overflow: hidden; background: linear-gradient(135deg, #fff2f5 0%, #f5f8ff 100%); border: 1px solid #f0dfe4; border-radius: var(--radius-lg); }
.updates-copy h2 { max-width: 520px; }
.updates-copy > p { max-width: 520px; margin: 17px 0 0; color: var(--muted); font-size: 13px; line-height: 1.85; }
.updates-copy > a { margin-top: 24px; display: inline-flex; align-items: center; gap: 10px; color: var(--brand); font-size: 12px; font-weight: 600; }
.updates-map { position: relative; min-height: 295px; }
.updates-map::before, .updates-map::after { position: absolute; content: ""; border: 1px dashed #d7dce6; border-radius: 50%; }
.updates-map::before { top: 50%; left: 50%; width: 270px; height: 270px; transform: translate(-50%, -50%); }
.updates-map::after { top: 50%; left: 50%; width: 180px; height: 180px; transform: translate(-50%, -50%); }
.updates-core { position: absolute; top: 50%; left: 50%; z-index: 3; width: 120px; height: 120px; padding: 15px; display: flex; flex-direction: column; align-items: center; justify-content: center; background: #fff; border: 1px solid var(--brand-line); border-radius: 25px; box-shadow: var(--shadow-md); transform: translate(-50%, -50%); }
.updates-core img { width: 37px; height: 37px; border-radius: 10px; }
.updates-core strong { margin-top: 7px; color: var(--ink); font-size: 13px; }
.updates-core span { color: var(--brand); font-size: 9px; }
.direction { position: absolute; z-index: 4; min-width: 100px; padding: 10px 12px; display: flex; align-items: center; gap: 7px; background: #fff; border: 1px solid var(--border); border-radius: 10px; box-shadow: var(--shadow-sm); }
.direction i { width: 8px; height: 8px; background: var(--brand); border-radius: 50%; }
.direction span { color: var(--ink); font-size: 11px; font-weight: 600; }
.direction small { margin-left: auto; color: var(--light-text); font-size: 8px; }
.direction-one { top: 7%; left: 36%; }
.direction-two { top: 46%; right: 0; }
.direction-two i { background: var(--orange); }
.direction-three { bottom: 4%; left: 33%; }
.direction-three i { background: var(--blue); }
.direction-more { top: 46%; left: 0; }
.direction-more b { width: 20px; height: 20px; display: grid; place-items: center; color: var(--brand); background: var(--brand-soft); border-radius: 6px; }

/* 为什么选择 */
.why-section { padding-block: 84px 96px; background: var(--bg); }
.why-grid { margin-top: 42px; display: grid; grid-template-columns: repeat(4, 1fr); background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }
.why-grid article { min-height: 180px; padding: 26px; display: flex; gap: 15px; border-right: 1px solid var(--border); }
.why-grid article:last-child { border-right: 0; }
.why-grid article > span { color: var(--brand); font-size: 11px; font-weight: 700; }
.why-grid h3 { margin: 0 0 9px; color: var(--ink); font-size: 17px; }
.why-grid p { margin: 0; color: var(--muted); font-size: 11px; line-height: 1.8; }

/* 品牌 CTA */
.brand-cta { padding-block: 78px; background: #fff; }
.brand-cta-card { padding: 42px 48px; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 30px; background: linear-gradient(105deg, #fff4f6, #fff 58%, #f2f6ff); border: 1px solid var(--brand-line); border-radius: 20px; }
.cta-logo { width: 76px; height: 76px; padding: 0; display: grid; place-items: center; background: transparent; border: 0; border-radius: 0; box-shadow: none; }
.cta-logo img { width: 100%; height: 100%; object-fit: contain; }
.cta-copy > span { color: var(--brand); font-size: 11px; font-weight: 600; }
.cta-copy h2 { margin: 5px 0 7px; color: var(--ink); font-size: 24px; }
.cta-copy p { margin: 0; color: var(--muted); font-size: 12px; }
.cta-actions { display: flex; flex-direction: column; align-items: flex-start; gap: 11px; }
.cta-text-link { color: var(--muted); font-size: 11px; }
.cta-text-link:hover { color: var(--brand); }

/* 页脚 */
.site-footer { padding-block: 45px; background: #20242d; color: rgba(255,255,255,.55); }
.footer-container { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 45px; }
.footer-brand > div { display: flex; align-items: center; gap: 9px; }
.footer-brand img { width: 28px; height: 28px; border-radius: 8px; }
.footer-brand strong { color: #fff; font-size: 14px; }
.footer-brand p { margin: 6px 0 0; font-size: 9px; }
.footer-links { display: flex; gap: 25px; }
.footer-links a { font-size: 10px; transition: color .2s ease; }
.footer-links a:hover { color: #fff; }
.footer-meta { justify-self: end; text-align: right; font-size: 9px; }
.footer-meta p { margin: 0 0 4px; }
.footer-meta a:hover { color: #fff; }

/* 动效 */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .55s ease, transform .55s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.help-card:nth-child(2), .scene-card:nth-child(2), .tool-card:nth-child(2), .workflow-item:nth-child(2) { transition-delay: .06s; }
.help-card:nth-child(3), .scene-card:nth-child(3), .tool-card:nth-child(3), .workflow-item:nth-child(3) { transition-delay: .12s; }

@media (max-width: 1080px) {
  :root { --container: min(100% - 40px, 980px); }
  .main-nav { gap: 21px; }
  .nav-club { display: none; }
  .hero-container { grid-template-columns: .92fr 1.08fr; gap: 36px; }
  .hero-copy h1 { font-size: 44px; }
  .workspace-tools { grid-template-columns: 1fr; }
  .workspace-tool { padding: 8px 10px; }
  .workspace-tool small { display: none; }
  .workspace-tip { display: none; }
  .help-grid, .scene-grid, .tool-grid { gap: 12px; }
  .workflow-container { gap: 48px; }
  .updates-card { padding: 45px; gap: 35px; }
  .why-grid article { padding: 20px; }
  .brand-cta-card { grid-template-columns: auto 1fr; }
  .cta-actions { grid-column: 2; flex-direction: row; align-items: center; }
}

@media (max-width: 860px) {
  .nav-container { grid-template-columns: 1fr auto; }
  .main-nav { display: none; }
  .hero-container { padding-block: 58px 72px; grid-template-columns: 1fr; }
  .hero-copy { max-width: 680px; }
  .workspace-preview { width: min(100%, 660px); margin-inline: auto; }
  .workspace-tools { grid-template-columns: repeat(3, 1fr); }
  .workspace-tool { padding: 12px 10px; }
  .workspace-tool small { display: block; }
  .workspace-tip { display: flex; }
  .help-grid, .scene-grid { grid-template-columns: 1fr; }
  .help-card { min-height: auto; }
  .scene-card { min-height: 220px; }
  .scene-card p { min-height: 0; }
  .tool-grid { grid-template-columns: 1fr; }
  .tool-card { display: grid; grid-template-columns: .8fr 1.2fr; }
  .tool-card-top { grid-column: 1; grid-row: 1; }
  .tool-title { grid-column: 1; grid-row: 2; }
  .tool-benefit { grid-column: 1; grid-row: 3; margin-bottom: 18px; }
  .tool-capabilities { grid-column: 2; grid-row: 1 / span 2; margin-top: 26px; }
  .tool-details { grid-column: 2; grid-row: 3; border-top: 0; align-self: end; }
  .tool-button { grid-column: 1 / -1; }
  .tool-title p, .tool-capabilities { min-height: 0; }
  .workflow-container { grid-template-columns: 1fr; }
  .updates-card { grid-template-columns: 1fr; }
  .updates-map { width: min(100%, 520px); margin-inline: auto; }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid article:nth-child(2) { border-right: 0; }
  .why-grid article:nth-child(-n+2) { border-bottom: 1px solid var(--border); }
  .footer-container { grid-template-columns: 1fr 1fr; }
  .footer-links { grid-column: 1 / -1; grid-row: 1; }
}

@media (max-width: 620px) {
  :root { --container: calc(100% - 28px); }
  html { scroll-padding-top: 76px; }
  .site-header { height: 62px; }
  .brand-logo { width: 34px; height: 34px; border-radius: 0; }
  .brand-logo img { width: 34px; height: 34px; }
  .brand-name { font-size: 15px; }
  .nav-official { padding: 8px 11px; font-size: 10px; }
  .nav-official span { display: none; }
  .hero { min-height: 0; }
  .hero-container { min-height: 0; padding-block: 42px 58px; gap: 45px; }
  .upgrade-pill { margin-bottom: 17px; font-size: 10px; }
  .hero-copy h1 { font-size: clamp(39px, 11.4vw, 48px); line-height: 1.22; }
  .hero-copy h1 em { display: inline; white-space: normal; }
  .mobile-break { display: block; height: 0; }
  .hero-copy > p { margin-top: 19px; font-size: 14px; line-height: 1.8; }
  .hero-actions { margin-top: 26px; align-items: stretch; flex-direction: column; }
  .primary-button, .secondary-button { width: 100%; }
  .hero-trust { margin-top: 22px; gap: 9px 14px; }
  .workspace-preview { padding: 10px; border-radius: 20px; }
  .workspace-header { height: 49px; padding-inline: 13px; }
  .workspace-body { padding: 14px; }
  .workspace-tools { grid-template-columns: 1fr; }
  .workspace-tool { padding: 9px 10px; }
  .workspace-tool small { display: block; }
  .workspace-tip { display: flex; }
  .help-section, .scene-section, .tools-section, .comparison-section, .updates-section, .why-section { padding-block: 68px; }
  .section-title h2, .tools-heading h2, .workflow-intro h2, .updates-copy h2 { font-size: 30px; }
  .section-title > p { font-size: 13px; }
  .help-grid, .scene-grid, .tool-grid { margin-top: 32px; }
  .help-card { padding: 20px; }
  .scene-card { padding: 21px; }
  .tools-heading { align-items: flex-start; flex-direction: column; }
  .tool-count { min-width: 0; }
  .tool-card { display: block; }
  .tool-card-top, .tool-title, .tool-benefit, .tool-capabilities, .tool-details, .tool-button { grid-column: auto; grid-row: auto; }
  .tool-title p, .tool-capabilities { min-height: 0; }
  .tool-benefit { margin-bottom: 0; }
  .tool-capabilities { margin-top: 17px; }
  .tool-details { border-top: 1px solid var(--border); }
  .workflow-section { padding-block: 70px; }
  .workflow-container { gap: 40px; }
  .workflow-item { grid-template-columns: 32px 1fr; gap: 10px; }
  .workflow-step span { width: 28px; height: 28px; }
  .workflow-card { padding: 14px; }
  .comparison-card { margin-top: 32px; }
  .updates-card { min-height: 0; padding: 30px 21px; gap: 30px; }
  .updates-map { min-height: 300px; transform: scale(.9); }
  .updates-map::before { width: 255px; height: 255px; }
  .direction-one { left: 31%; }
  .direction-two { right: -10px; }
  .direction-more { left: -10px; }
  .why-grid { grid-template-columns: 1fr; }
  .why-grid article { min-height: 130px; border-right: 0; border-bottom: 1px solid var(--border); }
  .why-grid article:last-child { border-bottom: 0; }
  .brand-cta { padding-block: 62px; }
  .brand-cta-card { padding: 27px 22px; grid-template-columns: 1fr; gap: 21px; }
  .cta-logo { width: 65px; height: 65px; }
  .cta-copy h2 { font-size: 21px; }
  .cta-actions { grid-column: auto; align-items: stretch; flex-direction: column; }
  .footer-container { grid-template-columns: 1fr; gap: 25px; }
  .footer-links { grid-column: auto; grid-row: auto; flex-wrap: wrap; gap: 12px 20px; }
  .footer-meta { justify-self: start; text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}