/* ===========================================================
   家电医生 · 真实故障维修实例库
   =========================================================== */

:root {
  --paper: #FAF8F3;
  --paper-2: #F2EDE3;
  --card: #FFFFFF;
  --ink: #17191B;
  --ink-2: #575D63;
  --ink-3: #8B9096;
  --line: #E7E1D5;
  --line-2: #D8D1C1;
  --brand: #DB4F17;
  --brand-2: #B23F10;
  --brand-soft: #FCEEE6;
  --ok: #2B7A54;
  --ok-soft: #E9F5EE;
  --warn: #9E6B12;
  --warn-soft: #FBF2E0;
  --danger: #A3392A;
  --danger-soft: #FBECE9;
  --radius: 14px;
  --radius-s: 9px;
  --shadow: 0 1px 2px rgba(23, 25, 27, .05), 0 10px 28px -14px rgba(23, 25, 27, .22);
  --shadow-hover: 0 2px 4px rgba(23, 25, 27, .06), 0 18px 40px -16px rgba(23, 25, 27, .26);
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans CN", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #131415;
    --paper-2: #1A1C1D;
    --card: #1E2021;
    --ink: #F1EFEA;
    --ink-2: #A6ACB1;
    --ink-3: #787E84;
    --line: #2C3032;
    --line-2: #3A3E41;
    --brand: #FF7C41;
    --brand-2: #FF9963;
    --brand-soft: #33221A;
    --ok: #61C08F;
    --ok-soft: #16281F;
    --warn: #D8A748;
    --warn-soft: #2A2316;
    --danger: #E8776A;
    --danger-soft: #2D1D1A;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 10px 28px -14px rgba(0, 0, 0, .6);
    --shadow-hover: 0 2px 6px rgba(0, 0, 0, .36), 0 18px 40px -16px rgba(0, 0, 0, .7);
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; }
input { font: inherit; }

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

.wrap { width: 100%; max-width: 1060px; margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 780px; }

/* ---------------- 顶部导航 ---------------- */
.site-head {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(14px);
  -webkit-backdrop-filter: saturate(1.4) blur(14px);
  border-bottom: 1px solid var(--line);
}

.head-in {
  display: flex;
  align-items: center;
  gap: 14px;
  height: 62px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: -.02em;
  font-size: 17px;
  white-space: nowrap;
}

.logo-mark {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--ink);
  color: var(--paper);
  display: grid;
  place-items: center;
  flex: none;
  position: relative;
}
.logo-mark svg { width: 17px; height: 17px; display: block; }

.logo-sub {
  font-size: 12.5px;
  font-weight: 500;
  color: var(--ink-3);
  letter-spacing: 0;
  border-left: 1px solid var(--line-2);
  padding-left: 12px;
  margin-left: 2px;
  display: none;
}
@media (min-width: 620px) { .logo-sub { display: block; } }

.head-spacer { flex: 1; }

.head-link {
  font-size: 13.5px;
  color: var(--ink-2);
  padding: 7px 12px;
  border-radius: 999px;
  transition: background .15s, color .15s;
  white-space: nowrap;
}
.head-link:hover { background: var(--paper-2); color: var(--ink); }
.head-link.is-active { color: var(--ink); background: var(--paper-2); font-weight: 600; }

@media (max-width: 720px) {
  .head-link { display: none; }
  .logo-sub { display: none; }
}

/* ---------------- 首页 Hero ---------------- */
.hero { padding: 58px 0 0; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--brand);
  background: var(--brand-soft);
  border: 1px solid color-mix(in srgb, var(--brand) 22%, transparent);
  padding: 5px 12px 5px 10px;
  border-radius: 999px;
  margin-bottom: 22px;
}
.eyebrow .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand) 18%, transparent);
}

h1.hero-title {
  margin: 0;
  font-size: clamp(31px, 5.6vw, 54px);
  line-height: 1.1;
  letter-spacing: -.035em;
  font-weight: 850;
  max-width: 15em;
}
h1.hero-title em {
  font-style: normal;
  color: var(--brand);
  position: relative;
  white-space: nowrap;
}

.hero-lede {
  margin: 18px 0 0;
  font-size: 17px;
  line-height: 1.7;
  color: var(--ink-2);
  max-width: 33em;
}
.hero-lede b { color: var(--ink); font-weight: 650; }

/* Hero 双栏 */
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 356px;
  gap: 56px;
  align-items: start;
}
@media (max-width: 1000px) {
  .hero-grid { grid-template-columns: 1fr; gap: 0; }
  .hero-visual { display: none; }
}

.hero-visual {
  position: relative;
  padding-top: 16px;
  height: 280px;
}
.hv-card {
  position: absolute;
  inset: 0;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
}
.hv-back {
  transform: rotate(2.4deg) translate(10px, -8px);
  opacity: .55;
  background: var(--paper-2);
}
.hv-front {
  transform: rotate(-1.4deg);
  padding: 20px 20px 46px;
  display: flex;
  flex-direction: column;
  gap: 11px;
}
.hv-top { display: flex; align-items: center; gap: 8px; }
.hv-cat { font-size: 12px; color: var(--ink-3); }
.hv-title {
  font-size: 16.5px;
  font-weight: 720;
  line-height: 1.45;
  letter-spacing: -.015em;
  margin-top: 2px;
}
.hv-syms { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 6px; }
.hv-syms li {
  position: relative;
  padding-left: 15px;
  font-size: 13px;
  color: var(--ink-2);
  line-height: 1.55;
}
.hv-syms li::before {
  content: "";
  position: absolute; left: 2px; top: .62em;
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--line-2);
}
.hv-foot {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 12.5px;
  color: var(--ink-3);
}
.hv-foot b { font-family: var(--mono); color: var(--ok); font-size: 13px; }
.hv-cta { color: var(--brand); font-weight: 650; }
.hv-badge {
  position: absolute;
  left: -20px;
  bottom: -16px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--ink);
  color: var(--paper);
  font-size: 12.5px;
  font-weight: 620;
  padding: 8px 14px;
  border-radius: 999px;
  box-shadow: var(--shadow);
  transform: rotate(-1.4deg);
}
.hv-badge svg { width: 13px; height: 13px; color: #6ee7a8; }

/* ---------------- 搜索区 ---------------- */
.search-block { margin-top: 30px; max-width: 700px; }

.search-box {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--card);
  border: 1.5px solid var(--line-2);
  border-radius: 16px;
  padding: 8px 8px 8px 16px;
  box-shadow: var(--shadow);
  transition: border-color .18s, box-shadow .18s;
}
.search-box:focus-within {
  border-color: var(--brand);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--brand) 13%, transparent), var(--shadow);
}
.search-box .icon-search { flex: none; color: var(--ink-3); display: grid; place-items: center; }
.search-box .icon-search svg { width: 19px; height: 19px; }

.search-box input {
  flex: 1;
  min-width: 0;
  border: 0;
  outline: 0;
  background: none;
  font-size: 16.5px;
  padding: 11px 0;
  color: var(--ink);
}
.search-box input::placeholder { color: var(--ink-3); }

.btn-go {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--brand);
  color: #fff;
  font-weight: 650;
  font-size: 15px;
  padding: 11px 20px;
  border-radius: 11px;
  transition: background .15s, transform .12s;
}
.btn-go:hover { background: var(--brand-2); }
.btn-go:active { transform: scale(.98); }
.btn-go svg { width: 15px; height: 15px; }

/* 搜索建议 */
.search-sug {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  font-size: 13.5px;
  color: var(--ink-3);
}
.search-sug .lbl { flex: none; margin-right: 2px; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--paper-2);
  border: 1px solid transparent;
  color: var(--ink-2);
  font-size: 13.5px;
  transition: all .15s;
  white-space: nowrap;
}
.chip:hover {
  background: var(--brand-soft);
  border-color: color-mix(in srgb, var(--brand) 28%, transparent);
  color: var(--brand-2);
}
.chip .arw { opacity: .45; font-size: 11px; }

/* ---------------- 区块标题 ---------------- */
.section { padding: 64px 0 0; }
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 22px;
  flex-wrap: wrap;
}
.section-title {
  margin: 0;
  font-size: 19px;
  font-weight: 750;
  letter-spacing: -.015em;
  display: flex;
  align-items: center;
  gap: 10px;
}
.section-title .num {
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 600;
  color: var(--ink-3);
  border: 1px solid var(--line-2);
  border-radius: 5px;
  padding: 1px 6px;
  letter-spacing: .04em;
}
.section-note { font-size: 13.5px; color: var(--ink-3); }

/* ---------------- 品类网格 ---------------- */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(178px, 1fr));
  gap: 12px;
}

.cat-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px 16px 16px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform .16s, box-shadow .16s, border-color .16s;
  overflow: hidden;
}
.cat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  border-color: var(--line-2);
}
.cat-ico {
  width: 38px; height: 38px;
  border-radius: 10px;
  background: var(--paper-2);
  display: grid; place-items: center;
  color: var(--ink);
}
.cat-ico svg { width: 21px; height: 21px; }
.cat-name { font-weight: 700; font-size: 15.5px; letter-spacing: -.01em; }
.cat-meta { font-size: 12.5px; color: var(--ink-3); line-height: 1.45; }
.cat-count {
  font-size: 12px;
  font-weight: 650;
  color: var(--brand);
  margin-top: auto;
  padding-top: 4px;
}
.cat-card .go-arw {
  position: absolute;
  right: 14px; top: 18px;
  color: var(--ink-3);
  opacity: 0;
  transform: translateX(-4px);
  transition: all .16s;
}
.cat-card:hover .go-arw { opacity: 1; transform: none; }
.cat-card .go-arw svg { width: 16px; height: 16px; }

/* ---------------- 案例卡 ---------------- */
.case-list { display: flex; flex-direction: column; gap: 14px; }

.case-card {
  display: block;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 22px 18px;
  transition: border-color .16s, box-shadow .16s, transform .16s;
  position: relative;
}
.case-card:hover {
  border-color: var(--line-2);
  box-shadow: var(--shadow-hover);
  transform: translateY(-1px);
}
.case-card.is-best {
  border-color: color-mix(in srgb, var(--brand) 45%, var(--line));
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand) 9%, transparent);
}

.best-flag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  background: var(--brand);
  padding: 4px 10px;
  border-radius: 999px 999px 999px 3px;
  margin-bottom: 12px;
  letter-spacing: .01em;
}
.best-flag svg { width: 12px; height: 12px; }

.case-top {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 9px;
  flex-wrap: wrap;
}

/* 难度徽章 */
.lvl {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12.5px;
  font-weight: 650;
  padding: 3px 9px;
  border-radius: 6px;
  letter-spacing: .01em;
  white-space: nowrap;
}
.lvl-1 { color: var(--ok); background: var(--ok-soft); }
.lvl-2 { color: var(--warn); background: var(--warn-soft); }
.lvl-3 { color: var(--danger); background: var(--danger-soft); }

.case-cat {
  font-size: 12.5px;
  color: var(--ink-3);
  padding: 3px 0;
}
.case-cat::before { content: "·"; margin-right: 8px; color: var(--line-2); }

.match-badge {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-3);
  letter-spacing: .02em;
}

.case-title {
  margin: 0 0 10px;
  font-size: 18.5px;
  font-weight: 720;
  line-height: 1.42;
  letter-spacing: -.015em;
}

.case-syms {
  margin: 0 0 12px;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.case-syms li {
  position: relative;
  padding-left: 16px;
  font-size: 14.2px;
  color: var(--ink-2);
  line-height: 1.6;
}
.case-syms li::before {
  content: "";
  position: absolute;
  left: 2px; top: .68em;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--line-2);
}

.case-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 14px;
}
.tag {
  font-size: 12px;
  color: var(--ink-3);
  background: var(--paper-2);
  padding: 2px 9px;
  border-radius: 5px;
  font-weight: 500;
}
.tag-hit {
  color: var(--brand-2);
  background: var(--brand-soft);
  font-weight: 650;
}

.case-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding-top: 13px;
  border-top: 1px dashed var(--line);
  flex-wrap: wrap;
}
.cost-line {
  display: flex;
  align-items: baseline;
  gap: 7px;
  font-size: 13.5px;
  color: var(--ink-2);
  min-width: 0;
}
.cost-line .k { flex: none; color: var(--ink-3); }
.cost-line .v { font-weight: 700; color: var(--ink); }
.cost-line .v.save { color: var(--ok); }

.cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 650;
  color: var(--brand);
  white-space: nowrap;
  flex: none;
}
.cta svg { width: 14px; height: 14px; transition: transform .16s; }
.case-card:hover .cta svg { transform: translateX(3px); }

/* ---------------- 结果页 ---------------- */
.result-head { padding: 40px 0 26px; }

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13.5px;
  color: var(--ink-3);
  margin-bottom: 18px;
  transition: color .15s;
}
.back-link:hover { color: var(--ink); }
.back-link svg { width: 14px; height: 14px; }

.query-line {
  font-size: 14px;
  color: var(--ink-3);
  margin: 0 0 8px;
}
.query-line .q {
  color: var(--ink);
  font-weight: 650;
  border-bottom: 2px solid var(--brand);
  padding-bottom: 1px;
}

h2.result-title {
  margin: 0 0 10px;
  font-size: clamp(23px, 3.6vw, 30px);
  font-weight: 800;
  letter-spacing: -.028em;
  line-height: 1.3;
}
h2.result-title .cnt { color: var(--brand); }

.result-sub {
  margin: 0;
  font-size: 14.5px;
  color: var(--ink-2);
  max-width: 40em;
}

.refine {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--ink-3);
}

/* 空结果 */
.empty {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px 28px;
  text-align: center;
}
.empty h3 { margin: 0 0 8px; font-size: 17px; font-weight: 700; }
.empty p { margin: 0 0 18px; color: var(--ink-2); font-size: 14.5px; }

/* ---------------- 详情页 ---------------- */
.case-head { padding: 34px 0 0; }

.case-head-meta {
  display: flex;
  align-items: center;
  gap: 9px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

h1.case-h1 {
  margin: 0 0 16px;
  font-size: clamp(25px, 4.2vw, 35px);
  line-height: 1.28;
  font-weight: 830;
  letter-spacing: -.03em;
}

.fact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-bottom: 26px;
}
.fact { display: flex; flex-direction: column; gap: 2px; }
.fact .k { font-size: 11.5px; color: var(--ink-3); letter-spacing: .03em; }
.fact .v { font-size: 14.5px; font-weight: 650; }

/* 步骤指示器 */
.stepper {
  position: sticky;
  top: 62px;
  z-index: 30;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 12px 0;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--line);
}
.stepper-in {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
}
.stepper-in::-webkit-scrollbar { display: none; }

.step-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border-radius: 8px;
  font-size: 13.5px;
  color: var(--ink-3);
  white-space: nowrap;
  transition: all .15s;
  flex: none;
  border: 1px solid transparent;
}
.step-pill:hover { background: var(--paper-2); color: var(--ink-2); }
.step-pill .n {
  width: 19px; height: 19px;
  border-radius: 5px;
  display: grid; place-items: center;
  font-size: 11px;
  font-family: var(--mono);
  background: var(--paper-2);
  color: var(--ink-3);
  flex: none;
  font-weight: 700;
}
.step-pill.is-active {
  color: var(--ink);
  background: var(--card);
  border-color: var(--line-2);
  font-weight: 650;
  box-shadow: var(--shadow);
}
.step-pill.is-active .n { background: var(--brand); color: #fff; }
.step-pill.is-done .n { background: var(--ok); color: #fff; }
.step-pill.is-done .n svg { width: 11px; height: 11px; }

/* 面板 */
.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 26px 24px;
  margin-bottom: 16px;
}
.panel-head { margin-bottom: 6px; }

.panel-kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--brand);
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 7px;
}
.panel-title {
  margin: 0 0 6px;
  font-size: 20px;
  font-weight: 760;
  letter-spacing: -.02em;
}
.panel-desc {
  margin: 0 0 20px;
  font-size: 14.5px;
  color: var(--ink-2);
  line-height: 1.7;
}

/* 自查 / 工具 / 步骤 列表项 */
.check-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  width: 100%;
  text-align: left;
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  background: var(--paper);
  margin-bottom: 8px;
  transition: all .15s;
  line-height: 1.55;
}
.check-item:hover { border-color: var(--line-2); background: var(--card); }
.check-item .box {
  width: 19px; height: 19px;
  border-radius: 5px;
  border: 1.5px solid var(--line-2);
  flex: none;
  margin-top: 1px;
  display: grid; place-items: center;
  background: var(--card);
  transition: all .15s;
}
.check-item .box svg { width: 12px; height: 12px; opacity: 0; color: #fff; transition: opacity .12s; }
.check-item .txt { font-size: 14.8px; color: var(--ink-2); }
.check-item.is-on { border-color: color-mix(in srgb, var(--ok) 40%, var(--line)); background: var(--ok-soft); }
.check-item.is-on .box { background: var(--ok); border-color: var(--ok); }
.check-item.is-on .box svg { opacity: 1; }
.check-item.is-on .txt { color: var(--ink); font-weight: 550; }

/* 自查结论条 */
.verdict {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: var(--radius-s);
  font-size: 14.3px;
  line-height: 1.6;
  background: var(--paper-2);
  color: var(--ink-2);
}
.verdict .gauge {
  flex: none;
  display: flex;
  gap: 3px;
}
.verdict .gauge i {
  width: 5px; height: 20px; border-radius: 2px;
  background: var(--line-2);
  transition: background .2s;
}
.verdict.is-strong { background: var(--ok-soft); color: var(--ink); }
.verdict.is-strong .gauge i { background: var(--ok); }
.verdict.is-mid { background: var(--warn-soft); color: var(--ink); }
.verdict.is-mid .gauge i { background: var(--warn); }
.verdict b { font-weight: 750; }

/* 原因排查 */
.cause {
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  margin-bottom: 10px;
  overflow: hidden;
  transition: all .18s;
  background: var(--paper);
}
.cause-top {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 16px;
}
.cause-idx {
  width: 22px; height: 22px;
  border-radius: 6px;
  background: var(--card);
  border: 1px solid var(--line-2);
  display: grid; place-items: center;
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 700;
  color: var(--ink-2);
  flex: none;
  margin-top: 1px;
}
.cause-body { flex: 1; min-width: 0; }
.cause-q { font-size: 15.5px; font-weight: 650; line-height: 1.5; margin-bottom: 6px; letter-spacing: -.01em; }
.cause-how {
  font-size: 14px;
  color: var(--ink-2);
  line-height: 1.65;
}
.cause-how .lb {
  display: inline-block;
  font-size: 11.5px;
  font-weight: 700;
  color: var(--ink-3);
  background: var(--paper-2);
  border-radius: 4px;
  padding: 1px 5px;
  margin-right: 6px;
  vertical-align: 1px;
}

.cause-acts {
  display: flex;
  gap: 8px;
  padding: 0 16px 15px 50px;
  flex-wrap: wrap;
}
.btn-mini {
  font-size: 13px;
  font-weight: 620;
  padding: 7px 14px;
  border-radius: 7px;
  border: 1px solid var(--line-2);
  background: var(--card);
  color: var(--ink-2);
  transition: all .14s;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.btn-mini:hover { border-color: var(--ink-3); color: var(--ink); }
.btn-mini svg { width: 12px; height: 12px; }
.btn-mini.yes.is-on { background: var(--ok); border-color: var(--ok); color: #fff; }
.btn-mini.no.is-on { background: var(--ink-3); border-color: var(--ink-3); color: var(--paper); }

/* 命中原因 */
.cause.is-hit {
  border-color: color-mix(in srgb, var(--ok) 48%, var(--line));
  background: var(--ok-soft);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--ok) 8%, transparent);
}
.cause.is-hit .cause-idx { background: var(--ok); border-color: var(--ok); color: #fff; }
.cause.is-miss { opacity: .52; }
.cause.is-miss .cause-idx { background: var(--paper-2); }

.cause-then {
  display: flex;
  gap: 9px;
  margin: 0 16px 14px 50px;
  padding: 11px 14px;
  border-radius: 7px;
  background: var(--card);
  border-left: 3px solid var(--ok);
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink);
}
.cause-then .arw { flex: none; color: var(--ok); font-weight: 700; }

/* 工具清单 */
.tool-item {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  text-align: left;
  padding: 13px 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  background: var(--paper);
  margin-bottom: 8px;
  transition: all .15s;
}
.tool-item:hover { border-color: var(--line-2); background: var(--card); }
.tool-item .box {
  width: 19px; height: 19px; border-radius: 5px;
  border: 1.5px solid var(--line-2); flex: none;
  display: grid; place-items: center; background: var(--card);
}
.tool-item .box svg { width: 12px; height: 12px; opacity: 0; color: #fff; }
.tool-item.is-on { background: var(--ok-soft); border-color: color-mix(in srgb, var(--ok) 35%, var(--line)); }
.tool-item.is-on .box { background: var(--ok); border-color: var(--ok); }
.tool-item.is-on .box svg { opacity: 1; }
.tool-name { font-size: 14.8px; font-weight: 550; flex: 1; }
.tool-name .own {
  font-size: 11.5px;
  color: var(--ok);
  background: var(--ok-soft);
  padding: 1px 6px;
  border-radius: 4px;
  margin-left: 7px;
  font-weight: 650;
}
.tool-price {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-2);
  flex: none;
  font-weight: 600;
}

.tool-sum {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: 14px;
  color: var(--ink-2);
  flex-wrap: wrap;
}
.tool-sum .total { font-weight: 750; color: var(--ink); font-family: var(--mono); }

/* 维修步骤 */
.step-item {
  display: flex;
  gap: 15px;
  padding: 18px 0;
  border-bottom: 1px dashed var(--line);
}
.step-item:last-child { border-bottom: 0; padding-bottom: 4px; }
.step-n {
  width: 27px; height: 27px;
  border-radius: 8px;
  background: var(--paper-2);
  color: var(--ink-2);
  display: grid; place-items: center;
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 700;
  flex: none;
  margin-top: 1px;
  transition: all .18s;
}
.step-item.is-done .step-n { background: var(--ok); color: #fff; }
.step-item.is-done .step-t { color: var(--ink-3); text-decoration: line-through; text-decoration-color: var(--line-2); }
.step-c { flex: 1; min-width: 0; }
.step-t {
  font-size: 15.8px;
  font-weight: 680;
  margin-bottom: 5px;
  line-height: 1.5;
  letter-spacing: -.01em;
}
.step-d { font-size: 14.3px; color: var(--ink-2); line-height: 1.72; }
.step-warn {
  display: flex;
  gap: 8px;
  margin-top: 9px;
  padding: 9px 12px;
  border-radius: 7px;
  background: var(--danger-soft);
  color: var(--danger);
  font-size: 13.2px;
  line-height: 1.6;
  font-weight: 550;
}
.step-warn svg { width: 14px; height: 14px; flex: none; margin-top: 2px; }

.step-done-btn {
  flex: none;
  align-self: flex-start;
  font-size: 12.5px;
  padding: 5px 10px;
  border-radius: 6px;
  border: 1px solid var(--line-2);
  color: var(--ink-3);
  transition: all .14s;
  white-space: nowrap;
}
.step-done-btn:hover { border-color: var(--ok); color: var(--ok); }
.step-item.is-done .step-done-btn { background: var(--ok); border-color: var(--ok); color: #fff; }

.progress-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 4px 0 18px;
}
.progress-bar {
  flex: 1;
  height: 6px;
  border-radius: 3px;
  background: var(--paper-2);
  overflow: hidden;
}
.progress-bar i {
  display: block;
  height: 100%;
  background: var(--ok);
  border-radius: 3px;
  transition: width .3s ease;
  width: 0;
}
.progress-txt {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--ink-3);
  flex: none;
  font-weight: 600;
}

/* 危险 / 停手提示 */
.stopbox {
  display: flex;
  gap: 13px;
  padding: 18px 20px;
  border-radius: var(--radius);
  background: var(--danger-soft);
  border: 1px solid color-mix(in srgb, var(--danger) 26%, transparent);
  margin-top: 16px;
}
.stopbox .ico { flex: none; color: var(--danger); margin-top: 2px; }
.stopbox .ico svg { width: 20px; height: 20px; }
.stopbox h4 { margin: 0 0 5px; font-size: 14.5px; font-weight: 750; color: var(--danger); }
.stopbox p { margin: 0; font-size: 14px; color: var(--ink-2); line-height: 1.7; }

/* 费用对比 */
.cost-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.3px;
  margin-bottom: 6px;
}
.cost-table tr { border-bottom: 1px solid var(--line); }
.cost-table tr:last-child { border-bottom: 0; }
.cost-table td { padding: 11px 0; vertical-align: top; }
.cost-table td:first-child { color: var(--ink-2); padding-right: 16px; }
.cost-table td:last-child { text-align: right; font-weight: 700; white-space: nowrap; font-family: var(--mono); font-size: 13.8px; }
.cost-table tr.is-mine td:last-child { color: var(--ok); }
.cost-table tr.is-pro td:last-child { color: var(--ink-2); }

/* 分支结果 */
.outcome {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}
.outcome h4 { margin: 0 0 12px; font-size: 15px; font-weight: 720; }
.outcome-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
@media (max-width: 560px) { .outcome-grid { grid-template-columns: 1fr; } }
.outcome-card {
  padding: 14px 16px;
  border-radius: var(--radius-s);
  border: 1px solid var(--line);
  background: var(--paper);
  font-size: 13.8px;
  line-height: 1.65;
  color: var(--ink-2);
}
.outcome-card .t {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 5px;
  font-size: 14px;
}
.outcome-card.ok .t { color: var(--ok); }
.outcome-card.no .t { color: var(--warn); }
.outcome-card .t svg { width: 14px; height: 14px; }

/* 底部操作 */
.case-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  padding: 8px 0 0;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--ink);
  color: var(--paper);
  font-weight: 650;
  font-size: 14.5px;
  padding: 11px 20px;
  border-radius: 9px;
  transition: opacity .15s, transform .12s;
}
.btn-primary:hover { opacity: .86; }
.btn-primary:active { transform: scale(.985); }
.btn-primary svg { width: 14px; height: 14px; }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border: 1px solid var(--line-2);
  color: var(--ink-2);
  font-weight: 600;
  font-size: 14.5px;
  padding: 11px 18px;
  border-radius: 9px;
  background: var(--card);
  transition: all .15s;
}
.btn-ghost:hover { border-color: var(--ink-3); color: var(--ink); }
.btn-ghost svg { width: 14px; height: 14px; }

/* 相关案例 */
.rel-list { display: flex; flex-direction: column; gap: 8px; }
.rel-item {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 12px 15px;
  border-radius: var(--radius-s);
  border: 1px solid var(--line);
  background: var(--card);
  font-size: 14.3px;
  transition: all .15s;
}
.rel-item:hover { border-color: var(--line-2); background: var(--paper); }
.rel-item .rt { flex: 1; font-weight: 550; line-height: 1.5; }
.rel-item .ra { color: var(--ink-3); flex: none; }
.rel-item .ra svg { width: 14px; height: 14px; }

/* ---------------- 首页下半部分 ---------------- */
.how-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 14px;
}
.how-card {
  padding: 20px 20px 22px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  position: relative;
}
.how-n {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--brand);
  letter-spacing: .06em;
  margin-bottom: 12px;
  display: block;
}
.how-card h4 { margin: 0 0 7px; font-size: 16px; font-weight: 720; letter-spacing: -.015em; }
.how-card p { margin: 0; font-size: 13.8px; color: var(--ink-2); line-height: 1.68; }

.note-strip {
  margin-top: 56px;
  padding: 20px 22px;
  border-radius: var(--radius);
  background: var(--paper-2);
  border: 1px solid var(--line);
  display: flex;
  gap: 13px;
  font-size: 13.6px;
  color: var(--ink-2);
  line-height: 1.7;
}
.note-strip .ico { flex: none; color: var(--ink-3); margin-top: 1px; }
.note-strip .ico svg { width: 18px; height: 18px; }
.note-strip b { color: var(--ink); }

/* ---------------- 页脚 ---------------- */
.site-foot {
  margin-top: 72px;
  padding: 30px 0 44px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--ink-3);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
}
.site-foot .fl { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.site-foot .sep { color: var(--line-2); }

/* 筛选条 */
.filter-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}
.filter-btn {
  font-size: 13.5px;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--line-2);
  color: var(--ink-2);
  background: var(--card);
  transition: all .15s;
}
.filter-btn:hover { border-color: var(--ink-3); }
.filter-btn.is-on { background: var(--ink); border-color: var(--ink); color: var(--paper); font-weight: 600; }
.filter-btn .c { opacity: .55; margin-left: 4px; font-family: var(--mono); font-size: 11.5px; }

/* ================= 速查项目库 ================= */
.section-lede {
  margin: -6px 0 20px;
  max-width: 680px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-2);
}

.lbg-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(228px, 1fr));
  gap: 12px;
}
.lbg-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 15px 16px 14px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform .16s, box-shadow .16s, border-color .16s;
}
.lbg-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  border-color: var(--line-2);
}
.lbg-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.lbg-name { font-size: 15px; font-weight: 700; letter-spacing: -.01em; }
.lbg-cnt {
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 600;
  color: var(--brand);
  background: var(--brand-soft);
  border-radius: 999px;
  padding: 1px 8px;
}
.lbg-desc { font-size: 12.5px; color: var(--ink-3); line-height: 1.5; }
.lbg-sample { display: flex; flex-direction: column; gap: 3px; margin-top: 5px; }
.lb-chip {
  position: relative;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--ink-2);
  padding-left: 10px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.lb-chip::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .72em;
  width: 3px; height: 3px;
  border-radius: 50%;
  background: var(--line-2);
}
.lbg-lv {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px dashed var(--line);
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--ink-3);
}
.lbg-lv b { font-weight: 600; color: var(--ink-2); }

.lib-all {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--brand);
  transition: gap .16s;
}
.lib-all svg { width: 16px; height: 16px; }
.lib-all:hover { gap: 13px; color: var(--brand-2); }

/* --- 速查库首页 --- */
.lib-hero { padding: 4px 0 2px; }
.lib-kicker {
  font-size: 11.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--brand);
  font-weight: 700;
}
.lib-h1 {
  margin: 10px 0 12px;
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -.03em;
  line-height: 1.25;
}
.lib-h1 .cnt { font-family: var(--mono); font-size: 15px; font-weight: 600; color: var(--ink-3); }
.lib-lede {
  margin: 0 0 22px;
  max-width: 680px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-2);
}
.lib-lede b { color: var(--ink); font-weight: 650; }

.lib-search {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  margin-bottom: 22px;
  background: var(--card);
  border: 1px solid var(--line-2);
  border-radius: 12px;
  transition: border-color .15s, box-shadow .15s;
}
.lib-search svg { width: 17px; height: 17px; color: var(--ink-3); flex: none; }
.lib-search input {
  flex: 1;
  border: 0;
  outline: none;
  background: none;
  font-family: inherit;
  font-size: 15px;
  color: var(--ink);
}
.lib-search:focus-within {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-soft);
}
.lib-count { margin: 0 0 12px; font-size: 13.5px; color: var(--ink-3); }
.lib-count b { color: var(--ink); }
.lib-empty {
  padding: 44px 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-3);
}

/* --- 项目列表行 --- */
.lb-list {
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.lb-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 16px;
  border-bottom: 1px solid var(--line);
  transition: background .14s;
}
.lb-row:last-child { border-bottom: 0; }
.lb-row:hover { background: var(--paper-2); }
.lb-lv {
  flex: none;
  width: 19px; height: 19px;
  border-radius: 6px;
  display: grid;
  place-items: center;
  font-size: 11px;
  line-height: 1;
}
.lb-main { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 3px; }
.lb-name { font-size: 14.5px; font-weight: 650; letter-spacing: -.01em; }
.lb-sub {
  font-size: 12.5px;
  color: var(--ink-3);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.lb-arw { flex: none; color: var(--line-2); display: flex; }
.lb-arw svg { width: 15px; height: 15px; }

/* --- 项目详情 --- */
.lb-detail { padding: 4px 0 6px; }
.lb-detail-meta {
  display: flex;
  align-items: center;
  gap: 9px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.lb-dev {
  font-size: 12.5px;
  color: var(--ink-2);
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px 11px;
}
.lb-gtag {
  font-size: 12.5px;
  color: var(--ink-3);
  border: 1px dashed var(--line-2);
  border-radius: 999px;
  padding: 3px 11px;
  transition: all .15s;
}
.lb-gtag:hover { color: var(--brand); border-color: var(--brand); }
.lb-detail-h1 {
  margin: 0 0 12px;
  font-size: 27px;
  font-weight: 800;
  letter-spacing: -.028em;
  line-height: 1.34;
}
.lb-scene { margin: 0; font-size: 14px; line-height: 1.7; color: var(--ink-2); }
.lb-scene .k {
  display: inline-block;
  margin-right: 10px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--ink-3);
}

.lb-panel {
  margin-top: 16px;
  padding: 20px 22px 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.lb-panel-h { margin: 0 0 6px; font-size: 15.5px; font-weight: 750; letter-spacing: -.01em; }
.lb-panel-d { margin: 0 0 14px; font-size: 13.5px; line-height: 1.65; color: var(--ink-3); }
.lb-syms { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 11px; }
.lb-syms li { display: flex; gap: 10px; font-size: 14.5px; line-height: 1.65; color: var(--ink); }
.lb-syms .mk {
  flex: none;
  width: 18px; height: 18px;
  margin-top: 2px;
  border-radius: 50%;
  background: var(--ok-soft);
  color: var(--ok);
  display: grid;
  place-items: center;
}
.lb-syms .mk svg { width: 11px; height: 11px; stroke-width: 3.2; }

.lb-tip {
  display: flex;
  gap: 12px;
  margin-top: 16px;
  padding: 16px 18px;
  border-radius: var(--radius);
  background: var(--brand-soft);
  border: 1px solid color-mix(in srgb, var(--brand) 22%, transparent);
}
.lb-tip .ico { flex: none; color: var(--brand); margin-top: 1px; display: flex; }
.lb-tip .ico svg { width: 17px; height: 17px; }
.lb-tip h4 { margin: 0 0 4px; font-size: 13.5px; font-weight: 750; color: var(--brand-2); }
.lb-tip p { margin: 0; font-size: 14px; line-height: 1.72; color: var(--ink); }

@media (max-width: 640px) {
  .lbg-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .lbg-card { padding: 13px 13px 12px; }
  .lbg-sample { display: none; }
  .lbg-name { font-size: 14px; }
  .lbg-desc { font-size: 11.5px; }
  .lib-h1 { font-size: 24px; }
  .lib-lede { font-size: 14px; }
  .lb-detail-h1 { font-size: 21px; }
  .lb-panel { padding: 17px 16px 15px; }
  .lb-tip { padding: 14px 15px; }
  .lb-row { padding: 12px 13px; gap: 10px; }
  .lb-name { font-size: 14px; }
  .lb-sub { font-size: 12px; }
  .section-lede { font-size: 14px; }
}

/* 进入动画 */
@keyframes rise {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}
.rise { animation: rise .4s cubic-bezier(.2, .7, .3, 1) both; }
.rise-2 { animation-delay: .06s; }
.rise-3 { animation-delay: .12s; }

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
}

@media (max-width: 640px) {
  .wrap { padding: 0 16px; }
  .hero { padding-top: 38px; }
  .panel { padding: 20px 17px; }
  .case-card { padding: 17px 16px 15px; }
  .case-title { font-size: 17px; }
  .search-box { padding: 6px 6px 6px 13px; }
  .btn-go { padding: 10px 14px; font-size: 14px; }
  .btn-go .go-txt { display: none; }
  .cause-acts { padding-left: 16px; }
  .cause-then { margin-left: 16px; }
  .section { padding-top: 46px; }
  .stepper { top: 58px; }
  .head-in { height: 58px; }
  .fact-row { gap: 10px 20px; }
  .site-foot { margin-top: 52px; }
  .cat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .cat-card { padding: 14px 13px 13px; gap: 7px; }
  .cat-ico { width: 32px; height: 32px; border-radius: 9px; }
  .cat-ico svg { width: 18px; height: 18px; }
  .cat-name { font-size: 14.5px; }
  .cat-meta { font-size: 11.5px; }
  .case-card .case-syms li { font-size: 13.8px; }
  .stepper-in { gap: 2px; }
  .step-pill { padding: 6px 7px; font-size: 12px; gap: 5px; }
  .step-pill .n { width: 17px; height: 17px; font-size: 10px; border-radius: 4px; }
  .hero-visual { display: none; }
}