/* ==========================================================================
   无忧软件 官网 v2 · 设计系统
   视觉基调：白（纯白）· 墨（中性深灰）· 橙（企业橙，呼应老站 #FF9900 体系）
   作者：WorkBuddy / 2026-11-09
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root {
  --paper:      #FFFFFF;
  --paper-2:    #F5F5F5;
  --paper-3:    #ECECEC;
  --white:      #FFFFFF;

  --ink:        #262626;
  --ink-2:      #444444;
  --ink-3:      #666666;
  --ink-4:      #6E6E6E;

  --line:       #E2E2E2;
  --line-2:     #D0D0D0;

  --accent:     #39801A;
  --accent-2:   #2E7D1C;
  --accent-soft:#EDF5E7;

  --radius:     14px;
  --radius-sm:  9px;
  --maxw:       1180px;

  --shadow-sm:  0 1px 2px rgba(0,0,0,.05), 0 6px 16px -10px rgba(0,0,0,.18);
  --shadow-md:  0 2px 6px rgba(0,0,0,.04), 0 24px 48px -28px rgba(0,0,0,.32);

  --sans: "PingFang SC", "HarmonyOS Sans SC", "Hiragino Sans GB", "Microsoft YaHei",
          system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --serif: "Songti SC", "Source Han Serif SC", "Noto Serif SC", "STSong", SimSun, serif;
  --ease: cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

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

img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p, figure { margin: 0; }
button { font: inherit; color: inherit; }

::selection { background: var(--accent); color: #fff; }

/* 焦点可见性：只对键盘用户显示 */
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 3. 布局工具 ---------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: 24px;
}
.wrap--narrow { max-width: 860px; }

.section { padding: 88px 0; }
.section--tight { padding: 64px 0; }
.section--paper { background: var(--paper-2); }
.section--line { border-top: 1px solid var(--line); }

.skip-link {
  position: absolute; left: 16px; top: -100px;
  background: var(--ink); color: #fff;
  padding: 10px 18px; border-radius: 8px; z-index: 999;
  transition: top .2s var(--ease);
}
.skip-link:focus { top: 16px; }

/* ---------- 4. 排版 ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 12.5px; letter-spacing: .18em; text-transform: uppercase;
  color: var(--ink-3); font-weight: 600;
  margin-bottom: 18px;
}
.eyebrow::before {
  content: ""; width: 26px; height: 1px; background: var(--accent);
}
.eyebrow--plain::before { display: none; }

.h1 {
  font-size: clamp(2.15rem, 5.2vw, 3.9rem);
  line-height: 1.18;
  letter-spacing: -0.02em;
  font-weight: 700;
}
.h2 {
  font-size: clamp(1.6rem, 3.2vw, 2.4rem);
  line-height: 1.28;
  letter-spacing: -0.015em;
  font-weight: 700;
}
.h3 {
  font-size: clamp(1.1rem, 1.6vw, 1.28rem);
  line-height: 1.4;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.lead {
  font-size: clamp(1rem, 1.35vw, 1.14rem);
  color: var(--ink-2);
  line-height: 1.85;
}
.muted { color: var(--ink-3); }
.serif { font-family: var(--serif); }
.accent { color: var(--accent); }

.section-head { max-width: 720px; margin-bottom: 52px; }
.section-head p { margin-top: 16px; color: var(--ink-2); }
.section-head--split {
  max-width: none;
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 40px; flex-wrap: wrap;
}
.section-head--split > div { max-width: 700px; }

/* 下划线强调（朱红细线，克制） */
.u-mark { position: relative; white-space: nowrap; }
.u-mark::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: .06em;
  height: .34em; background: var(--accent-soft); z-index: -1;
}

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 13px 26px;
  border-radius: 999px;
  font-size: 15px; font-weight: 600; line-height: 1;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .22s var(--ease), background-color .22s var(--ease),
              color .22s var(--ease), border-color .22s var(--ease), box-shadow .22s var(--ease);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--accent); color: #fff;
  box-shadow: 0 8px 20px -10px rgba(196,70,45,.75);
}
.btn--primary:hover { background: var(--accent-2); }

.btn--ghost {
  border-color: var(--line-2); color: var(--ink);
  background: transparent;
}
.btn--ghost:hover { border-color: var(--ink); background: rgba(0,0,0,.03); }

.btn--light {
  background: var(--paper); color: var(--ink);
}
.btn--light:hover { background: #fff; }

.btn--onDark {
  border-color: rgba(255,255,255,.28); color: #fff;
}
.btn--onDark:hover { background: rgba(255,255,255,.09); border-color: rgba(255,255,255,.5); }

.btn .arrow { transition: transform .22s var(--ease); }
.btn:hover .arrow { transform: translateX(3px); }

.link-arrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 600; font-size: 14.5px; color: var(--accent);
}
.link-arrow .arrow { transition: transform .22s var(--ease); }
.link-arrow:hover .arrow { transform: translateX(4px); }

/* ---------- 6. 页头 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(251,250,247,.82);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s var(--ease), background-color .25s var(--ease);
}
.site-header.is-scrolled {
  border-bottom-color: var(--line);
  background: rgba(251,250,247,.94);
}
.site-header__inner {
  display: flex; align-items: center; gap: 28px;
  height: 76px;
}

.logo { display: inline-flex; align-items: center; gap: 11px; flex-shrink: 0; }
.logo__img { display: block; height: 44px; width: auto; }
.logo__img--footer { height: 40px; }

.nav { margin-left: auto; }
.nav__list { display: flex; align-items: center; gap: 4px; }
.nav__link {
  display: block; padding: 9px 14px; border-radius: 8px;
  white-space: nowrap;
  font-size: 15px; color: var(--ink-2); font-weight: 500;
  transition: color .2s var(--ease), background-color .2s var(--ease);
  position: relative;
}
.nav__link:hover { color: var(--ink); background: rgba(0,0,0,.045); }
.nav__link.is-active { color: var(--ink); font-weight: 600; }
.nav__link.is-active::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 2px;
  height: 2px; background: var(--accent); border-radius: 2px;
}

.header-cta { display: flex; align-items: center; gap: 14px; }
.nav__mobile-cta { display: none; }
.header-tel {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 14px; font-weight: 600; color: var(--ink-2);
  font-variant-numeric: tabular-nums;
}
.header-tel:hover { color: var(--accent); }

.nav-toggle {
  display: none;
  width: 42px; height: 42px; border: 1px solid var(--line-2);
  background: transparent; border-radius: 10px;
  cursor: pointer; padding: 0;
  place-items: center;
}
.nav-toggle span {
  display: block; width: 18px; height: 1.5px; background: var(--ink);
  border-radius: 2px; position: relative; transition: transform .25s var(--ease), background-color .2s;
}
.nav-toggle span::before,
.nav-toggle span::after {
  content: ""; position: absolute; left: 0; width: 18px; height: 1.5px;
  background: var(--ink); border-radius: 2px;
  transition: transform .25s var(--ease), top .25s var(--ease);
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after  { top: 6px; }
body.nav-open .nav-toggle span { background: transparent; }
body.nav-open .nav-toggle span::before { top: 0; transform: rotate(45deg); }
body.nav-open .nav-toggle span::after  { top: 0; transform: rotate(-45deg); }

/* ---------- 7. 首屏 ---------- */
.hero {
  position: relative;
  padding: 84px 0 76px;
  overflow: hidden;
}
.hero::before {
  /* 极淡的方格纸纹理，暗示「试卷」 */
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, rgba(0,0,0,.045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0,0,0,.045) 1px, transparent 1px);
  background-size: 96px 96px;
  mask-image: radial-gradient(120% 80% at 72% 22%, #000 0%, transparent 72%);
  -webkit-mask-image: radial-gradient(120% 80% at 72% 22%, #000 0%, transparent 72%);
  pointer-events: none;
}
.hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.06fr .94fr;
  gap: 64px;
  align-items: center;
}
.hero__title { margin-bottom: 22px; }
.hero__title .line2 { display: block; color: var(--accent); }
.hero__desc {
  font-size: clamp(1rem, 1.3vw, 1.1rem);
  color: var(--ink-2);
  max-width: 30em;
  line-height: 1.9;
}
.hero__actions {
  display: flex; flex-wrap: wrap; gap: 14px;
  margin-top: 34px;
}
.hero__facts {
  display: flex; flex-wrap: wrap; gap: 10px 26px;
  margin-top: 38px; padding-top: 24px;
  border-top: 1px solid var(--line);
  font-size: 13.5px; color: var(--ink-3);
}
.hero__facts span { display: inline-flex; align-items: center; gap: 8px; }
.hero__facts span::before {
  content: ""; width: 5px; height: 5px; border-radius: 50%;
  background: var(--accent); flex-shrink: 0;
}

/* 首屏视觉：CSS 绘制的「模拟卷 + 判分」 */
.hero__visual {
  position: relative;
  display: flex; justify-content: center;
  perspective: 1200px;
}
.exam-sheet {
  position: relative;
  width: 100%; max-width: 400px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 30px 26px 30px 52px;
  box-shadow: var(--shadow-md);
  transform: rotate(-1.6deg);
  transition: transform .5s var(--ease);
}
.hero__visual:hover .exam-sheet { transform: rotate(-.6deg) translateY(-4px); }

/* 密封线 */
.exam-sheet__seal {
  position: absolute; left: 30px; top: 26px; bottom: 26px;
  width: 1px;
  border-left: 1px dashed var(--line-2);
}
.exam-sheet__seal span {
  position: absolute; top: 50%; left: -8px;
  transform: translateY(-50%);
  writing-mode: vertical-rl;
  font-size: 9.5px; letter-spacing: .34em;
  color: #9E9E9E; font-family: var(--serif);
  background: var(--white); padding: 8px 0;
  white-space: nowrap;
}
.sheet-head {
  display: flex; align-items: baseline; justify-content: space-between;
  padding-bottom: 12px; border-bottom: 1px solid var(--line);
}
.sheet-head b {
  font-family: var(--serif); font-size: 17px; letter-spacing: .04em;
}
.sheet-head em {
  font-style: normal; font-size: 10px; letter-spacing: .16em;
  color: var(--ink-4); font-weight: 600;
}
.sheet-sub {
  font-size: 11px; letter-spacing: .1em; color: var(--ink-3);
  margin-top: 12px; display: flex; justify-content: space-between;
}
.sheet-rows { margin-top: 18px; display: grid; gap: 15px; }
.sheet-row { display: flex; gap: 10px; align-items: flex-start; }
.sheet-row .no {
  font-family: var(--serif); font-size: 12px; color: var(--ink-4);
  width: 16px; flex-shrink: 0; padding-top: 1px;
}
.sheet-row .q {
  font-size: 12.5px; color: var(--ink-2); line-height: 1.5;
  flex: 1;
}
.opts { display: flex; gap: 6px; margin-top: 7px; }
.opt {
  width: 19px; height: 19px; border-radius: 50%;
  border: 1px solid var(--line-2);
  display: grid; place-items: center;
  font-size: 9px; color: var(--ink-4); line-height: 1;
}
.opt.is-on {
  background: var(--ink); border-color: var(--ink); color: #fff;
}
.opt.is-right {
  background: var(--accent); border-color: var(--accent); color: #fff;
}

.sheet-stamp {
  position: absolute; right: -18px; bottom: -22px;
  width: 92px; height: 92px; border-radius: 50%;
  border: 2px solid var(--accent);
  color: var(--accent);
  display: grid; place-items: center;
  text-align: center;
  transform: rotate(9deg);
  background: rgba(251,250,247,.86);
  backdrop-filter: blur(2px);
}
.sheet-stamp b {
  font-family: var(--serif); font-size: 30px; line-height: 1;
  display: block; letter-spacing: -.02em;
}
.sheet-stamp i {
  font-style: normal; font-size: 9px; letter-spacing: .3em;
  display: block; margin-top: 4px;
}

/* ---------- 8. 数据条 ---------- */
.stats {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--paper-2);
}
.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.stat {
  padding: 34px 28px;
  border-left: 1px solid var(--line);
}
.stat:first-child { border-left: 0; padding-left: 0; }
.stat__num {
  font-family: var(--serif);
  font-size: clamp(1.9rem, 3.4vw, 2.6rem);
  line-height: 1.1; letter-spacing: -.02em;
  display: flex; align-items: baseline; gap: 4px;
}
.stat__num small {
  font-family: var(--sans); font-size: 13px; font-weight: 600;
  color: var(--ink-3); letter-spacing: 0;
}
.stat__label {
  font-size: 13.5px; color: var(--ink-3); margin-top: 8px;
}

/* ---------- 9. 产品卡片 ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.card {
  position: relative;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 28px 26px;
  display: flex; flex-direction: column;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.card:hover {
  transform: translateY(-3px);
  border-color: var(--line-2);
  box-shadow: var(--shadow-md);
}
.card__no {
  font-family: var(--serif); font-size: 12px; letter-spacing: .16em;
  color: var(--ink-4); margin-bottom: 20px;
  display: flex; align-items: center; gap: 10px;
}
.card__no::after {
  content: ""; flex: 1; height: 1px; background: var(--line);
}
.card__title { margin-bottom: 6px; }
.card__model {
  font-size: 13.5px; color: var(--accent); font-weight: 600;
  margin-bottom: 14px;
}
.card__desc {
  font-size: 14.5px; color: var(--ink-2); line-height: 1.8;
  margin-bottom: 20px;
}
.card__tags {
  display: flex; flex-wrap: wrap; gap: 7px;
  margin-top: auto; padding-top: 18px;
  border-top: 1px solid var(--line);
}
.tag {
  font-size: 12px; color: var(--ink-3);
  background: var(--paper-2);
  border-radius: 999px;
  padding: 4px 11px;
  line-height: 1.5;
}
.card--feature {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}
.card--feature .card__no { color: rgba(255,255,255,.45); }
.card--feature .card__no::after { background: rgba(255,255,255,.16); }
.card--feature .card__desc { color: rgba(255,255,255,.72); }
.card--feature .card__model { color: #84BD64; }
.card--feature .card__tags { border-top-color: rgba(255,255,255,.14); }
.card--feature .tag { background: rgba(255,255,255,.1); color: rgba(255,255,255,.82); }
.card--feature .link-arrow { color: #fff; }
.card--feature .link-arrow .arrow { color: #84BD64; }
.card__link { margin-top: 18px; }

/* ---------- 10. 能力网格 ---------- */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.feature {
  background: var(--paper);
  padding: 30px 28px;
  transition: background-color .25s var(--ease);
}
.feature:hover { background: var(--white); }
.feature__icon {
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--accent-soft); color: var(--accent);
  display: grid; place-items: center;
  margin-bottom: 18px;
}
.feature h3 { font-size: 16px; margin-bottom: 8px; }
.feature p { font-size: 14px; color: var(--ink-2); line-height: 1.8; }

/* ---------- 11. 客户 ---------- */
.clients {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 40px;
}
.client {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 22px 20px;
  background: var(--white);
}
.client__kind {
  font-size: 11.5px; letter-spacing: .12em; color: var(--accent);
  font-weight: 600; margin-bottom: 10px;
}
.client__name {
  font-size: 15px; font-weight: 600; line-height: 1.45;
}
.namewall {
  display: flex; flex-wrap: wrap; gap: 9px;
}
.namewall li {
  font-size: 13.5px; color: var(--ink-2);
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: 999px;
  padding: 6px 14px;
  transition: border-color .2s var(--ease), color .2s var(--ease);
}
.namewall li:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- 12. 新闻列表 ---------- */
.news-list { border-top: 1px solid var(--line); }
.news-item {
  display: grid;
  grid-template-columns: 132px 1fr 24px;
  gap: 24px;
  align-items: center;
  padding: 22px 4px;
  border-bottom: 1px solid var(--line);
  transition: background-color .2s var(--ease), padding-left .2s var(--ease);
}
.news-item:hover { background: var(--paper-2); padding-left: 14px; }
.news-item time {
  font-size: 13px; color: var(--ink-3);
  font-variant-numeric: tabular-nums;
  letter-spacing: .04em;
}
.news-item h3 {
  font-size: 15.5px; font-weight: 500; color: var(--ink);
  line-height: 1.6;
}
.news-item:hover h3 { color: var(--accent); }
.news-item .go { color: var(--ink-4); transition: transform .2s var(--ease), color .2s; }
.news-item:hover .go { transform: translateX(3px); color: var(--accent); }
.news-item .news-excerpt {
  margin-top: 8px;
  font-size: 13px; line-height: 1.75; color: var(--ink-3);
}
.news-item .news-source {
  display: inline-block; margin-top: 9px;
  font-size: 12.5px; color: var(--accent);
  border-bottom: 1px solid currentColor;
}
.news-item .news-source:hover { color: var(--accent-2); }
/* 非链接条目（无详情页）不做可点击暗示 */
.news-item:not(a):hover { background: transparent; padding-left: 4px; }
.news-item:not(a):hover h3 { color: var(--ink); }

/* ---------- 13. CTA ---------- */
.cta {
  position: relative;
  background: var(--ink);
  color: #fff;
  padding: 76px 0;
  overflow: hidden;
}
.cta::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(90% 120% at 22% 50%, #000, transparent 70%);
  -webkit-mask-image: radial-gradient(90% 120% at 22% 50%, #000, transparent 70%);
}
.cta__inner {
  position: relative;
  display: flex; align-items: center; justify-content: space-between;
  gap: 48px; flex-wrap: wrap;
}
.cta h2 { max-width: 20em; }
.cta p { color: rgba(255,255,255,.7); margin-top: 14px; max-width: 34em; }
.cta__actions { display: flex; flex-wrap: wrap; gap: 12px; }
.cta__tel {
  display: flex; flex-direction: column; gap: 2px;
  font-family: var(--serif); font-size: 22px; letter-spacing: .02em;
  font-variant-numeric: tabular-nums;
}
.cta__tel small {
  font-family: var(--sans); font-size: 12px; letter-spacing: .14em;
  color: rgba(255,255,255,.5); font-weight: 600;
}

/* ---------- 14. 页脚 ---------- */
.site-footer {
  background: var(--paper-2);
  border-top: 1px solid var(--line);
  padding: 64px 0 0;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.4fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer__brand p {
  font-size: 13.5px; color: var(--ink-3);
  margin-top: 16px; max-width: 26em; line-height: 1.8;
}
.footer__col h4 {
  font-size: 12.5px; letter-spacing: .14em; color: var(--ink-4);
  font-weight: 600; margin-bottom: 16px;
}
.footer__links { display: grid; gap: 10px; }
.footer__links a {
  font-size: 14px; color: var(--ink-2);
  transition: color .2s var(--ease);
}
.footer__links a:hover { color: var(--accent); }
.footer__contact { display: grid; gap: 12px; font-size: 13.5px; color: var(--ink-2); }
.footer__contact b { color: var(--ink); font-weight: 600; }
.footer__bottom {
  border-top: 1px solid var(--line);
  padding: 20px 0 26px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap;
  font-size: 12.5px; color: var(--ink-3);
}
.footer__bottom a:hover { color: var(--accent); }
/* 页脚「关注服务号」区块：由 main.js 第 8 节注入，全站共用 */
.footer__follow {
  display: flex; align-items: center; gap: 20px;
  margin-top: -16px; padding: 0 0 40px;
}
.footer__follow-code img {
  width: 104px; height: 104px; object-fit: contain;
  border: 1px solid var(--line); border-radius: 12px;
  padding: 6px; background: #fff;
}
.footer__follow h4 {
  font-size: 12.5px; letter-spacing: .14em; color: var(--ink-4);
  font-weight: 600; margin: 0 0 8px;
}
.footer__follow-name {
  font-size: 16px; font-weight: 600; color: var(--ink); margin: 0 0 4px;
}
.footer__follow-desc {
  font-size: 13px; color: var(--ink-3); margin: 0; line-height: 1.7;
}
@media (max-width: 560px) {
  .footer__follow { gap: 16px; align-items: flex-start; }
  .footer__follow-code img { width: 88px; height: 88px; }
}

/* ---------- 15. 子页页头 ---------- */
.page-hero {
  background: var(--paper-2);
  border-bottom: 1px solid var(--line);
  padding: 56px 0 60px;
  position: relative;
  overflow: hidden;
}
.page-hero::after {
  content: "";
  position: absolute; right: -60px; top: -60px;
  width: 340px; height: 340px; border-radius: 50%;
  border: 1px solid var(--line);
  opacity: .8;
}
.page-hero__inner { position: relative; }
.breadcrumb {
  display: flex; align-items: center; gap: 8px;
  font-size: 12.5px; color: var(--ink-4);
  margin-bottom: 22px;
}
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { color: var(--ink-3); }
.page-hero h1 {
  font-size: clamp(1.85rem, 3.8vw, 2.8rem);
  letter-spacing: -.02em; line-height: 1.25;
  font-weight: 700;
}
.page-hero p {
  margin-top: 16px; color: var(--ink-2);
  max-width: 44em; font-size: 15.5px;
}

/* ---------- 16. 内容块 ---------- */
.prose { max-width: 760px; }
.prose p { margin-bottom: 18px; color: var(--ink-2); line-height: 1.95; }
.prose p:last-child { margin-bottom: 0; }
.prose strong { color: var(--ink); }

.split {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 64px;
  align-items: start;
}
.split--even { grid-template-columns: 1fr 1fr; }

.note {
  border-left: 2px solid var(--accent);
  padding: 4px 0 4px 20px;
  font-size: 14px; color: var(--ink-2);
}
.quote {
  font-family: var(--serif);
  font-size: clamp(1.25rem, 2.4vw, 1.75rem);
  line-height: 1.7; letter-spacing: .02em;
  color: var(--ink);
}
.quote cite {
  display: block; margin-top: 18px;
  font-family: var(--sans); font-size: 13px; font-style: normal;
  color: var(--ink-3); letter-spacing: .06em;
}

/* 特点长列表 */
.spec-list { display: grid; gap: 0; border-top: 1px solid var(--line); }
.spec-list li {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 18px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.spec-list .idx {
  font-family: var(--serif); font-size: 13px; color: var(--accent);
  padding-top: 3px; letter-spacing: .08em;
}
.spec-list li > div { max-width: 780px; }
.spec-list h3 { font-size: 15.5px; margin-bottom: 6px; }
.spec-list p { font-size: 14px; color: var(--ink-2); line-height: 1.8; }

/* 参数表 */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.spec-table th, .spec-table td {
  text-align: left;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: 0; }
.spec-table th {
  width: 128px; font-weight: 600; color: var(--ink-3);
  background: var(--paper-2); font-size: 13px;
}
.spec-table td { color: var(--ink-2); }

/* 选项卡 */
.tabs {
  display: flex; gap: 6px; flex-wrap: wrap;
  border-bottom: 1px solid var(--line);
  margin-bottom: 36px;
}
.tab {
  appearance: none; background: none; border: 0;
  padding: 13px 20px 15px;
  font-size: 15px; font-weight: 500; color: var(--ink-3);
  cursor: pointer; position: relative;
  transition: color .2s var(--ease);
  border-radius: 8px 8px 0 0;
}
.tab:hover { color: var(--ink); }
.tab[aria-selected="true"] { color: var(--ink); font-weight: 700; }
.tab[aria-selected="true"]::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -1px;
  height: 2px; background: var(--accent);
}
.tabpanel[hidden] { display: none; }
.tabpanel { animation: fadeUp .4s var(--ease) both; }

/* ---------- 17. 办公室卡片 ---------- */
.offices {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.office {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 26px 24px;
}
.office__head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; margin-bottom: 16px;
  padding-bottom: 14px; border-bottom: 1px solid var(--line);
}
.office__head h3 { font-size: 16px; }
.office__tag {
  font-size: 11.5px; color: var(--accent); font-weight: 600;
  letter-spacing: .08em;
}
.office dl { display: grid; gap: 10px; font-size: 14px; }
.office dl div { display: grid; grid-template-columns: 40px 1fr; gap: 10px; }
.office dt { color: var(--ink-4); font-size: 13px; }
.office dd { margin: 0; color: var(--ink-2); line-height: 1.7; }
.office dd a:hover { color: var(--accent); }

/* ---------- 18. 表单 ---------- */
.form {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow-sm);
}
.form__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px 22px;
}
.field { display: flex; flex-direction: column; gap: 8px; }
.field--full { grid-column: 1 / -1; }
.field label {
  font-size: 13px; font-weight: 600; color: var(--ink-2);
}
.field label .req { color: var(--accent); margin-left: 3px; }
.field input,
.field select,
.field textarea {
  width: 100%;
  font: inherit; font-size: 14.5px;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line-2);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease), background-color .2s;
  min-height: 46px;
}
.field textarea { resize: vertical; min-height: 128px; line-height: 1.7; }
.field input:hover, .field select:hover, .field textarea:hover { border-color: var(--ink-4); }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(196,70,45,.13);
}
.field .hint { font-size: 12px; color: var(--ink-4); }
.field .error {
  font-size: 12px; color: var(--accent); min-height: 0;
  display: none;
}
.field.is-invalid input,
.field.is-invalid select,
.field.is-invalid textarea { border-color: var(--accent); background: var(--accent-soft); }
.field.is-invalid .error { display: block; }

.form__foot {
  margin-top: 26px; padding-top: 22px;
  border-top: 1px solid var(--line);
  display: flex; align-items: center; justify-content: space-between;
  gap: 18px; flex-wrap: wrap;
}
.form__foot p { font-size: 12.5px; color: var(--ink-4); max-width: 30em; }
.form-ok {
  display: none;
  border: 1px solid #BFD8C4;
  background: #F1F8F2;
  color: #2E6A3D;
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  font-size: 14px;
  margin-bottom: 22px;
}
.form-ok.is-visible { display: block; }
/* 通道未开通等非成功状态：用琥珀色明确区分，避免误认为已成功 */
.form-ok--warn {
  border-color: #E3C89A;
  background: #FDF7EA;
  color: #8A5A12;
}

/* ---------- 19. 下载列表 ---------- */
.dl-list { border-top: 1px solid var(--line); }
.dl-item {
  display: grid;
  grid-template-columns: 46px 1fr auto;
  gap: 20px; align-items: center;
  padding: 20px 4px;
  border-bottom: 1px solid var(--line);
  transition: background-color .2s var(--ease);
}
.dl-item:hover { background: var(--paper-2); }
.dl-item__icon {
  width: 42px; height: 42px; border-radius: 10px;
  background: var(--paper-2); color: var(--ink-3);
  display: grid; place-items: center;
}
.dl-item h3 { font-size: 15px; font-weight: 600; }
.dl-item .meta {
  font-size: 12.5px; color: var(--ink-4); margin-top: 5px;
  font-variant-numeric: tabular-nums;
}
.badge {
  font-size: 11.5px; color: var(--ink-3);
  background: var(--paper-2); border-radius: 999px;
  padding: 3px 10px; margin-left: 8px;
}

/* ---------- 20. 动效 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.is-in { opacity: 1; transform: none; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: none; }
}

/* ---------- 21. 响应式 ---------- */
@media (max-width: 1080px) {
  .hero__grid { grid-template-columns: 1fr; gap: 56px; }
  .hero__visual { justify-content: flex-start; }
  .exam-sheet { max-width: 420px; }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .features { grid-template-columns: repeat(2, 1fr); }
  .clients { grid-template-columns: repeat(2, 1fr); }
  .cards { grid-template-columns: 1fr 1fr; }
  .cards .card--feature { grid-column: 1 / -1; }
  .split, .split--even { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 1040px) {
  .header-tel { display: none; }
  .nav {
    position: fixed; inset: 76px 0 auto 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    padding: 10px 24px 24px;
    transform: translateY(-8px);
    opacity: 0; pointer-events: none;
    transition: opacity .22s var(--ease), transform .22s var(--ease);
    box-shadow: var(--shadow-sm);
    max-height: calc(100dvh - 76px);
    overflow-y: auto;
  }
  body.nav-open .nav { opacity: 1; transform: none; pointer-events: auto; }
  .nav__list { flex-direction: column; align-items: stretch; gap: 0; margin: 0; }
  .nav__link { padding: 15px 4px; font-size: 16px; border-bottom: 1px solid var(--line); border-radius: 0; }
  .nav__link.is-active::after { display: none; }
  .nav__link.is-active { color: var(--accent); }
  .nav__mobile-cta {
    display: flex; flex-direction: column; align-items: flex-start;
    gap: 14px; padding-top: 22px;
  }
  .nav__mobile-cta .btn { width: 100%; }
  .nav-toggle { display: grid; }
  .header-cta { margin-left: auto; }

  .section { padding: 64px 0; }
  .stats__grid { grid-template-columns: 1fr 1fr; }
  .stat { border-left: 0; padding: 26px 0; }
  .stat:nth-child(even) { padding-left: 24px; border-left: 1px solid var(--line); }
  .stat:nth-child(odd) { padding-right: 24px; }
  .stat:nth-child(n+3) { border-top: 1px solid var(--line); }

  .news-item { grid-template-columns: 1fr; gap: 6px; padding: 18px 4px; }
  .news-item .go { display: none; }
  .offices { grid-template-columns: 1fr; }
  .form { padding: 26px 22px; }
  .form__grid { grid-template-columns: 1fr; }
  .cta { padding: 60px 0; }
  .cta__inner { gap: 32px; }
  .page-hero { padding: 40px 0 44px; }
  .footer__grid { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 560px) {
  .wrap { padding-inline: 20px; }
  .header-cta .btn--primary { display: none; }
  .cards { grid-template-columns: 1fr; }
  .features { grid-template-columns: 1fr; }
  .clients { grid-template-columns: 1fr; }
  .hero { padding: 52px 0 56px; }
  .hero__actions .btn { flex: 1; }
  .exam-sheet { padding: 24px 20px 26px 44px; }
  .sheet-stamp { width: 76px; height: 76px; right: -8px; bottom: -16px; }
  .sheet-stamp b { font-size: 25px; }
  .news-item time { font-size: 12px; }
  .dl-item { grid-template-columns: 38px 1fr; }
  .dl-item .badge { grid-column: 2; margin-left: 0; }
  .footer__bottom { font-size: 11.5px; }
}

/* ---------- 22. 无障碍与降级 ---------- */
@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; }
}

@media print {
  .site-header, .nav-toggle, .cta, .site-footer, .hero__visual { display: none; }
  body { background: #fff; }
  .section { padding: 20px 0; }
}

/* ---------- 右下角咨询浮窗 ---------- */
.kefu { position: fixed; right: 18px; bottom: 18px; z-index: 200; display: flex; flex-direction: column; align-items: flex-end; gap: 12px; }
.kefu-fab {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px;
  width: 58px; height: 58px; border-radius: 50%; border: 0; cursor: pointer;
  background: var(--accent); color: #fff;
  box-shadow: 0 6px 18px rgba(0,0,0,.22);
  font-size: 11.5px; letter-spacing: .05em; font-family: inherit;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.kefu-fab:hover { transform: translateY(-2px); background: var(--accent-2); box-shadow: 0 8px 22px rgba(0,0,0,.26); }
.kefu.is-open .kefu-fab { background: #3D3D3D; }
.kefu-panel {
  width: 264px; background: #fff; border: 1px solid var(--line);
  border-radius: 14px; padding: 18px 16px 16px;
  box-shadow: 0 12px 36px rgba(0,0,0,.16);
}
.kefu-panel__title {
  margin: 0 0 12px; font-size: 14.5px; font-weight: 700; color: var(--ink);
  padding-bottom: 10px; border-bottom: 1px solid var(--line);
}
.kefu-panel__row {
  display: grid; grid-template-columns: 22px 1fr; grid-template-rows: auto auto; column-gap: 10px;
  align-items: center; padding: 9px 10px; border-radius: 9px; margin-bottom: 6px;
  color: var(--ink); text-decoration: none; font-size: 15px; font-weight: 600;
  transition: background .12s ease;
}
.kefu-panel__row:hover { background: var(--paper-2); }
.kefu-panel__ico { grid-row: span 2; font-size: 18px; text-align: center; }
.kefu-panel__hint { grid-column: 2; font-size: 11.5px; font-weight: 400; color: var(--ink-3); }
.kefu-panel__qr { text-align: center; margin-bottom: 12px; }
.kefu-panel__qr img { width: 150px; height: 150px; object-fit: contain; border: 1px solid var(--line); border-radius: 10px; padding: 8px; background: #fff; }
.kefu-panel__qr p { margin: 6px 0 0; font-size: 12px; color: var(--ink-3); }
.kefu-panel__btn { display: block; text-align: center; margin-top: 10px; border-radius: 9px; }
@media (max-width: 560px) {
  .kefu { right: 14px; bottom: 14px; }
  .kefu-panel { width: min(280px, calc(100vw - 40px)); }
}