/* =========================================================
  严选车 YANXUANCHE — 首页样式
  设计语言：亮色雅奢 · 衬线标题 · 香槟金点缀 · 大留白
  ========================================================= */

:root {
  --bg:        #faf8f4;
  --bg-soft:   #f2eee6;
  --bg-card:   #ffffff;
  --ink:       #26221b;
  --ink-dim:   #6e675a;
  --ink-faint: #a39b8c;
  --gold:      #a97e4f;
  --gold-soft: #b58a5e;
  --line:      rgba(38, 34, 27, 0.1);
  --line-soft: rgba(38, 34, 27, 0.06);
  --serif: "Noto Serif SC", "Songti SC", "SimSun", "STSong", Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #d8d1c3; border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: var(--gold); }

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

.container {
  width: min(1180px, 92%);
  margin: 0 auto;
}

/* ---------- 通用元素 ---------- */

.eyebrow {
  font-size: 0.72rem;
  letter-spacing: 0.38em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 500;
  margin-bottom: 1.4rem;
}
.eyebrow::before {
  content: "";
  display: inline-block;
  width: 34px;
  height: 1px;
  background: var(--gold);
  vertical-align: middle;
  margin-right: 14px;
  opacity: 0.8;
}

h1, h2, h3 { font-family: var(--serif); font-weight: 600; line-height: 1.2; }

h2 { font-size: clamp(1.9rem, 3.4vw, 2.7rem); letter-spacing: 0.06em; }

.section-sub { color: var(--ink-dim); margin-top: 1.1rem; font-size: 0.95rem; }

.text-link {
  display: inline-block;
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  color: var(--ink);
  border-bottom: 1px solid var(--gold);
  padding-bottom: 6px;
  transition: color 0.35s var(--ease);
}
.text-link span { color: var(--gold); margin-left: 4px; transition: transform 0.35s var(--ease); display: inline-block; }
.text-link:hover { color: var(--gold); }
.text-link:hover span { transform: translateX(5px); }

/* 按钮 */
.btn {
  display: inline-block;
  font-size: 0.82rem;
  letter-spacing: 0.22em;
  padding: 1.05rem 2.5rem;
  cursor: pointer;
  transition: all 0.4s var(--ease);
  border: none;
  font-family: var(--sans);
  text-transform: uppercase;
}
.btn-solid {
  background: var(--gold);
  color: #fff;
}
.btn-solid:hover { background: #b98b58; transform: translateY(-2px); box-shadow: 0 14px 34px rgba(169, 126, 79, 0.28); }
.btn-line {
  background: transparent;
  color: var(--ink);
  border: 1px solid rgba(38, 34, 27, 0.3);
}
.btn-line:hover { border-color: var(--gold); color: var(--gold); transform: translateY(-2px); }
.btn-block { width: 100%; }
.btn .arr { margin-left: 8px; }

/* 滚动渐入 */
.reveal {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
.reveal.in { opacity: 1; transform: none; }
.reveal.d-1 { transition-delay: 0.12s; }
.reveal.d-2 { transition-delay: 0.24s; }
.reveal.d-3 { transition-delay: 0.36s; }

/* =========================================================
   顶部导航
   ========================================================= */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background 0.45s var(--ease), border-color 0.45s var(--ease), padding 0.45s var(--ease);
  border-bottom: 1px solid transparent;
  padding: 1.6rem 0;
}
.site-header.scrolled {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--line);
  padding: 0.9rem 0;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand { display: flex; align-items: center; gap: 0.9rem; }
.brand-mark {
  width: 42px; height: 42px;
  border: 1px solid var(--gold);
  display: grid;
  place-items: center;
  font-family: var(--serif);
  font-size: 1.35rem;
  color: var(--gold);
  background: linear-gradient(145deg, rgba(169,126,79,0.14), rgba(169,126,79,0.03));
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-family: var(--serif); font-size: 1.28rem; letter-spacing: 0.28em; font-weight: 600; color: var(--ink); }
.brand-text em { font-style: normal; font-size: 0.56rem; letter-spacing: 0.42em; color: var(--ink-faint); margin-top: 3px; }

.site-nav { display: flex; gap: 2.6rem; }
.nav-link {
  position: relative;
  font-size: 0.86rem;
  letter-spacing: 0.16em;
  color: var(--ink-dim);
  padding: 6px 0;
  transition: color 0.3s;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 1px;
  background: var(--gold);
  transition: width 0.4s var(--ease);
}
.nav-link:hover { color: var(--ink); }
.nav-link:hover::after { width: 100%; }

.header-actions { display: flex; align-items: center; gap: 1.2rem; }
.header-actions .btn { padding: 0.75rem 1.7rem; }
.header-actions .btn-line { border-color: rgba(38, 34, 27, 0.3); color: var(--ink); }

/* 滚动后：白底深字 */
.site-header.scrolled .brand-text strong { color: var(--ink); }
.site-header.scrolled .brand-text em { color: var(--ink-faint); }
.site-header.scrolled .brand-mark { border-color: var(--gold); color: var(--gold); background: rgba(169, 126, 79, 0.1); }
.site-header.scrolled .nav-link { color: var(--ink-dim); }
.site-header.scrolled .nav-link:hover { color: var(--ink); }
.site-header.scrolled .header-actions .btn-line { border-color: rgba(38, 34, 27, 0.3); color: var(--ink); }

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px 2px;
}
.menu-toggle span {
  width: 26px; height: 1.5px;
  background: var(--ink);
  transition: transform 0.35s var(--ease), opacity 0.3s;
}
.menu-toggle.open span:first-child { transform: translateY(3.75px) rotate(45deg); }
.menu-toggle.open span:last-child { transform: translateY(-3.75px) rotate(-45deg); }

/* =========================================================
   首屏主视觉
   ========================================================= */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
}
.hero-media { position: absolute; inset: 0; z-index: 0; }
.hero-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transform: scale(1.06);
  animation: heroZoom 2.6s var(--ease) forwards;
}
@keyframes heroZoom {
  to { transform: scale(1); }
}
.hero-media-veil {
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(250,248,244,0.78) 0%, rgba(250,248,244,0.3) 45%, rgba(250,248,244,0.92) 88%, var(--bg) 100%),
    linear-gradient(90deg, rgba(250,248,244,0.5) 0%, rgba(250,248,244,0.12) 55%);
}

/* 右侧竖排装饰 */
.hero-rail {
  position: absolute;
  right: 2.6rem; top: 50%;
  transform: translateY(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.4rem;
  font-size: 0.62rem;
  letter-spacing: 0.42em;
  color: var(--ink-faint);
}
.hero-rail i { width: 1px; height: 92px; background: linear-gradient(#d3b286, transparent); }
.hero-rail span { writing-mode: vertical-rl; }

.hero-content {
  position: relative;
  z-index: 2;
  padding: 6rem 0 12.5rem;
  max-width: 780px;
}
.hero h1 {
  font-size: clamp(2.7rem, 6.4vw, 5.3rem);
  letter-spacing: 0.1em;
  line-height: 1.14;
  font-weight: 600;
  color: var(--ink);
  text-shadow: 0 4px 30px rgba(250, 248, 244, 0.7);
}
.hero .eyebrow { color: var(--gold); }
.hero-desc {
  margin-top: 1.9rem;
  font-size: 1.02rem;
  line-height: 1.95;
  color: var(--ink-dim);
  max-width: 460px;
}
.hero-cta { margin-top: 3rem; display: flex; gap: 1.1rem; flex-wrap: wrap; }
.hero-cta .btn-line { border-color: rgba(38, 34, 27, 0.35); color: var(--ink); }
.hero-cta .btn-line:hover { border-color: var(--gold); color: var(--gold); }

/* 底部数据条 */
.hero-stats {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  z-index: 3;
  display: flex;
  border-top: 1px solid var(--line-soft);
  background: linear-gradient(180deg, transparent, rgba(250, 248, 244, 0.92));
}
.hs-item {
  flex: 1;
  padding: 1.6rem 2rem 1.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  border-left: 1px solid var(--line-soft);
}
.hs-item:first-child { border-left: none; }
.hs-item b { font-family: var(--serif); font-size: 2rem; font-weight: 600; color: var(--gold); letter-spacing: 0.06em; }
.hs-item span { font-size: 0.72rem; letter-spacing: 0.24em; color: var(--ink-dim); }

.scroll-hint {
  position: absolute;
  bottom: 1.9rem; left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.7rem;
  color: var(--ink-faint);
  font-size: 0.6rem;
  letter-spacing: 0.42em;
}
.scroll-hint i {
  width: 1px; height: 44px;
  background: linear-gradient(#d3b286, transparent);
  overflow: hidden;
  position: relative;
}
.scroll-hint i::after {
  content: "";
  position: absolute;
  top: -100%; left: 0;
  width: 100%; height: 100%;
  background: var(--ink);
  animation: scrollDrop 2.2s var(--ease) infinite;
}
@keyframes scrollDrop {
  0% { top: -100%; }
  100% { top: 100%; }
}

/* =========================================================
   数据背书
   ========================================================= */
.stats { border-top: 1px solid var(--line-soft); background: var(--bg); }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.stat {
  padding: 3.4rem 1.5rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  border-left: 1px solid var(--line-soft);
}
.stat:first-child { border-left: none; }
.stat-num {
  font-family: var(--serif);
  font-size: clamp(2rem, 3.4vw, 2.9rem);
  color: var(--gold);
  font-weight: 600;
  letter-spacing: 0.04em;
}
.stat-label { font-size: 0.78rem; letter-spacing: 0.22em; color: var(--ink-dim); }

/* =========================================================
   品牌理念
   ========================================================= */
.philosophy { padding: clamp(5rem, 10vw, 8.5rem) 0; }
.philosophy-inner {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(3rem, 6vw, 6rem);
  align-items: center;
}
.philosophy-text h2 { margin-bottom: 1.8rem; }
.philosophy-text p:not(.eyebrow) { color: var(--ink-dim); margin-bottom: 1.4rem; font-size: 0.97rem; }
.philosophy-text p.brand-line {
  font-family: var(--serif);
  font-size: 1.06rem;
  line-height: 2.1;
  letter-spacing: 0.12em;
  color: var(--gold);
  margin-bottom: 1.9rem;
}
.philosophy-text .text-link { margin-top: 1.2rem; }

.philosophy-figure { position: relative; }
.philosophy-figure img {
  width: 100%;
  height: 520px;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.04);
}
.philosophy-figure figcaption {
  margin-top: 1rem;
  font-size: 0.72rem;
  letter-spacing: 0.3em;
  color: var(--ink-faint);
  display: flex;
  align-items: center;
  gap: 0.9rem;
}
.philosophy-figure figcaption::before { content: ""; width: 30px; height: 1px; background: var(--gold); }

.frame-gold {
  position: absolute;
  top: -18px; left: -18px;
  right: 18px; bottom: 18px;
  border: 1px solid rgba(169, 126, 79, 0.4);
  pointer-events: none;
}
.frame-alt { top: auto; right: auto; left: -18px; bottom: -18px; }

/* =========================================================
   严选服务
   ========================================================= */
.services { background: var(--bg-soft); padding: clamp(5rem, 10vw, 8.5rem) 0; }
.section-head { margin-bottom: 3.6rem; }
.section-head.row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
}
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.6rem; }
.service-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  padding: 2.8rem 2.2rem 2.4rem;
  position: relative;
  transition: transform 0.45s var(--ease), border-color 0.45s var(--ease), background 0.45s;
}
.service-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 0; height: 2px;
  background: linear-gradient(90deg, var(--gold), transparent);
  transition: width 0.55s var(--ease);
}
.service-card:hover { transform: translateY(-6px); border-color: rgba(169,126,79,0.4); background: #fffdf8; }
.service-card:hover::before { width: 100%; }
.service-no {
  font-family: var(--serif);
  font-size: 0.9rem;
  color: var(--gold);
  letter-spacing: 0.3em;
  display: block;
  margin-bottom: 1.6rem;
}
.service-card h3 { font-size: 1.35rem; letter-spacing: 0.1em; margin-bottom: 0.9rem; }
.service-card > p { color: var(--ink-dim); font-size: 0.9rem; line-height: 1.9; }
.service-card ul { margin-top: 1.7rem; padding-top: 1.5rem; border-top: 1px solid var(--line-soft); }
.service-card li {
  font-size: 0.82rem;
  color: var(--ink-dim);
  letter-spacing: 0.06em;
  padding: 0.35rem 0;
  display: flex;
  align-items: center;
  gap: 0.7rem;
}
.service-card li::before { content: ""; width: 5px; height: 5px; background: var(--gold); transform: rotate(45deg); flex-shrink: 0; }

/* =========================================================
   精选车源
   ========================================================= */
.fleet { padding: clamp(5rem, 10vw, 8.5rem) 0; }
.fleet-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.8rem; }
.car-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  overflow: hidden;
  transition: border-color 0.5s var(--ease), transform 0.5s var(--ease), box-shadow 0.5s var(--ease);
}
.car-card:hover { border-color: rgba(169,126,79,0.45); transform: translateY(-5px); box-shadow: 0 18px 44px rgba(38, 34, 27, 0.08); }
.car-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}
.car-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 1.1s var(--ease), filter 0.6s;
}
.car-card:hover .car-media img { transform: scale(1.07); }
.car-tag {
  position: absolute;
  top: 1.1rem; left: 1.1rem;
  background: rgba(11, 11, 12, 0.72);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(211, 178, 134, 0.55);
  color: #d3b286;
  font-size: 0.66rem;
  letter-spacing: 0.28em;
  padding: 0.4rem 0.9rem;
}
.car-body { padding: 1.6rem 1.7rem 1.5rem; }
.car-title { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; }
.car-title h3 { font-size: 1.25rem; letter-spacing: 0.06em; }
.car-price { font-family: var(--serif); color: var(--gold); font-size: 1.55rem; font-weight: 600; letter-spacing: 0.02em; white-space: nowrap; }
.car-price small { font-size: 0.78rem; margin-left: 2px; }
.car-spec { margin-top: 0.5rem; font-size: 0.8rem; color: var(--ink-faint); letter-spacing: 0.05em; }
.car-foot {
  margin-top: 1.2rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line-soft);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.car-cert { font-size: 0.76rem; color: var(--ink-dim); letter-spacing: 0.06em; }
.car-link {
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  color: var(--gold);
  border-bottom: 1px solid transparent;
  padding-bottom: 3px;
  transition: border-color 0.35s;
}
.car-link:hover { border-bottom-color: var(--gold); }

/* =========================================================
   购车流程
   ========================================================= */
.process { background: var(--bg-soft); padding: clamp(5rem, 10vw, 8.5rem) 0; }
.process-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.6rem;
  counter-reset: step;
}
.process-list li {
  position: relative;
  padding: 2.4rem 1.9rem 2.2rem;
  border: 1px solid var(--line);
  background: var(--bg-card);
  transition: border-color 0.45s var(--ease), transform 0.45s var(--ease);
}
.process-list li:hover { border-color: rgba(169,126,79,0.4); transform: translateY(-4px); }
.step-no {
  font-family: var(--serif);
  font-size: 2.6rem;
  font-weight: 600;
  color: transparent;
  -webkit-text-stroke: 1px rgba(169, 126, 79, 0.55);
  display: block;
  margin-bottom: 1.3rem;
  line-height: 1;
}
.process-list h3 { font-size: 1.12rem; letter-spacing: 0.12em; margin-bottom: 0.6rem; }
.process-list p { font-size: 0.84rem; color: var(--ink-dim); line-height: 1.9; }

/* =========================================================
   品质保障
   ========================================================= */
.assurance { padding: clamp(5rem, 10vw, 8.5rem) 0; }
.assurance-inner {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: clamp(3rem, 6vw, 6rem);
  align-items: center;
}
.assurance-media { position: relative; }
.assurance-media img { width: 100%; height: 560px; object-fit: cover; }
.assurance-list { margin-top: 2.4rem; }
.assurance-list li {
  display: flex;
  gap: 1.8rem;
  padding: 1.7rem 0;
  border-top: 1px solid var(--line-soft);
  align-items: flex-start;
}
.assurance-list li:last-child { border-bottom: 1px solid var(--line-soft); }
.assurance-list b {
  font-family: var(--serif);
  font-size: 1.9rem;
  font-weight: 600;
  color: var(--gold);
  min-width: 3.4rem;
  line-height: 1.1;
}
.assurance-list h3 { font-size: 1.05rem; letter-spacing: 0.1em; margin-bottom: 0.35rem; }
.assurance-list p { font-size: 0.85rem; color: var(--ink-dim); line-height: 1.85; }

/* =========================================================
   预约咨询
   ========================================================= */
.contact {
  background:
    radial-gradient(900px 420px at 85% 0%, rgba(169, 126, 79, 0.1), transparent 65%),
    var(--bg-soft);
  padding: clamp(5rem, 10vw, 8.5rem) 0;
  border-top: 1px solid var(--line-soft);
}
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1.1fr 1fr;
  gap: clamp(2rem, 4vw, 4rem);
  align-items: start;
}
.contact-head h2 { margin-bottom: 1rem; }
.contact-form { display: flex; flex-direction: column; gap: 1.2rem; background: var(--bg-card); border: 1px solid var(--line); padding: 2.4rem 2.2rem 2rem; }
.field { display: flex; flex-direction: column; gap: 0.5rem; }
.field label { font-size: 0.74rem; letter-spacing: 0.24em; color: var(--ink-dim); }
.field input {
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--line);
  padding: 0.7rem 0.1rem;
  color: var(--ink);
  font-size: 0.95rem;
  font-family: var(--sans);
  outline: none;
  transition: border-color 0.35s;
}
.field input::placeholder { color: var(--ink-faint); }
.field input:focus { border-bottom-color: var(--gold); }
.contact-form .btn { margin-top: 0.6rem; }
.form-note { font-size: 0.72rem; color: var(--ink-faint); text-align: center; line-height: 1.8; }

.contact-info { display: flex; flex-direction: column; gap: 2rem; padding-top: 0.4rem; }
.ci-item span {
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: var(--gold);
  display: block;
  margin-bottom: 0.7rem;
}
.ci-item p { font-size: 0.92rem; color: var(--ink-dim); line-height: 1.9; }

/* =========================================================
   我要卖车
   ========================================================= */
.sell { background: var(--bg-soft); padding: clamp(5rem, 10vw, 8.5rem) 0; border-top: 1px solid var(--line-soft); }
.sell-inner {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(2.5rem, 5vw, 4rem);
  align-items: start;
}
.sell-steps .process-list { grid-template-columns: repeat(2, 1fr); gap: 1.3rem; }
.sell-steps .process-list li { padding: 2rem 1.7rem 1.9rem; }
.sell-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  padding: 2.4rem 2.2rem 2.1rem;
  position: sticky;
  top: 6.5rem;
  box-shadow: 0 18px 44px rgba(38, 34, 27, 0.08);
}
.sell-card h3 {
  font-family: var(--serif);
  font-size: 1.3rem;
  letter-spacing: 0.1em;
  margin-bottom: 1.7rem;
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.1rem 1.4rem;
}
.form-grid .field-full { grid-column: 1 / -1; }
.sell-card .btn { margin-top: 1.4rem; }
.sell-points {
  margin-top: 1.7rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line-soft);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.sell-points li {
  font-size: 0.76rem;
  color: var(--ink-dim);
  letter-spacing: 0.04em;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
.sell-points b {
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--gold);
  letter-spacing: 0.1em;
}

/* =========================================================
   我要查车
   ========================================================= */
.check { padding: clamp(5rem, 10vw, 8.5rem) 0; }
.check-panel {
  border: 1px solid var(--line);
  background: var(--bg-card);
  padding: 2.5rem 2.4rem;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: end;
  box-shadow: 0 18px 44px rgba(38, 34, 27, 0.07);
}
.check-panel h3 { font-family: var(--serif); font-size: 1.35rem; letter-spacing: 0.1em; }
.check-panel .hint { font-size: 0.78rem; color: var(--ink-faint); margin-top: 0.5rem; }
.check-query { display: flex; gap: 0.9rem; align-items: flex-end; }
.check-query input {
  flex: 1;
  min-width: 260px;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--line);
  padding: 0.7rem 0.1rem;
  color: var(--ink);
  font-size: 0.95rem;
  font-family: var(--sans);
  outline: none;
  transition: border-color 0.35s;
}
.check-query input::placeholder { color: var(--ink-faint); }
.check-query input:focus { border-bottom-color: var(--gold); }
.check-query .btn { white-space: nowrap; }
.check-note { margin-top: 1.2rem; font-size: 0.72rem; color: var(--ink-faint); letter-spacing: 0.06em; }
.check-cols {
  margin-top: 3.4rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.8rem;
}
.report-card {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  padding: 2.2rem 2.1rem;
}
.report-card h4 {
  font-family: var(--serif);
  font-size: 1.05rem;
  letter-spacing: 0.14em;
  margin-bottom: 1.3rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}
.report-card h4::before {
  content: "";
  width: 6px; height: 6px;
  background: var(--gold);
  transform: rotate(45deg);
  flex-shrink: 0;
}
.report-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.72rem 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 0.85rem;
  color: var(--ink-dim);
}
.report-list li:last-child { border-bottom: none; }
.report-list li span { color: var(--ink); letter-spacing: 0.04em; }
.report-list li em { font-style: normal; color: var(--gold); font-family: var(--serif); }

/* =========================================================
   页脚
   ========================================================= */
.site-footer { border-top: 1px solid var(--line-soft); padding: 4rem 0 2.6rem; background: var(--bg); }
.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.4fr;
  gap: 2rem;
  align-items: start;
}
.footer-brand p { margin-top: 1.1rem; font-family: var(--serif); font-size: 0.95rem; color: var(--ink-faint); letter-spacing: 0.1em; }
.footer-links { display: flex; flex-wrap: wrap; gap: 1.1rem 1.9rem; }
.footer-links a { font-size: 0.82rem; letter-spacing: 0.14em; color: var(--ink-dim); transition: color 0.3s; }
.footer-links a:hover { color: var(--gold); }
.footer-meta { text-align: right; }
.footer-meta p { font-size: 0.72rem; color: var(--ink-faint); line-height: 2; letter-spacing: 0.06em; }

/* =========================================================
   响应式
   ========================================================= */
@media (max-width: 1024px) {
  .philosophy-inner, .assurance-inner { grid-template-columns: 1fr; gap: 3.4rem; }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .process-list { grid-template-columns: repeat(2, 1fr); }
  .sell-inner { grid-template-columns: 1fr; }
  .sell-card { position: static; }
  .check-panel { grid-template-columns: 1fr; }
  .check-cols { grid-template-columns: 1fr; }
  .contact-inner { grid-template-columns: 1fr 1fr; }
  .contact-head { grid-column: 1 / -1; }
  .hero-rail { display: none; }
}

@media (max-width: 760px) {
  .site-nav {
    position: fixed;
    inset: 0;
    background: rgba(250, 248, 244, 0.98);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2.4rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s var(--ease);
    z-index: -1;
  }
  .site-nav.open { opacity: 1; pointer-events: auto; }
  .nav-link { font-size: 1.15rem; color: var(--ink); }
  .menu-toggle { display: flex; }
  .menu-toggle.open span { background: var(--ink); }
  .header-actions .btn { display: none; }

  .hero-stats { position: static; }
  .hero-content { padding: 7.5rem 0 3.5rem; }
  .hero-cta .btn { width: 100%; text-align: center; }
  .scroll-hint { display: none; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat { padding: 2.2rem 1rem; }

  .service-grid, .fleet-grid, .process-list, .sell-steps .process-list, .contact-inner { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .check-panel { grid-template-columns: 1fr; padding: 2rem 1.5rem; }
  .check-query { flex-direction: column; align-items: stretch; }
  .check-query input { min-width: 0; }
  .check-query .btn { width: 100%; }
  .sell-points { grid-template-columns: 1fr; gap: 0.85rem; }
  .contact-info { flex-direction: row; flex-wrap: wrap; gap: 1.6rem 2.4rem; }
  .footer-inner { grid-template-columns: 1fr; gap: 2.2rem; }
  .footer-meta { text-align: left; }
  .philosophy-figure img, .assurance-media img { height: 340px; }
}

@media (max-width: 420px) {
  .brand-text em { display: none; }
}