/* ============================================================
   湛益中孚官网 v4.0 — 白底大厂版
   学智谱/千问/DeepSeek 的搭建方式：纯白底 + 近黑字 + 细边框白卡，
   色彩关进卡片里（一张帆红渐变主打卡）；产品先行、规格实物、
   黑色收尾 band、多栏页脚。首屏主视觉 = 大帆船渡水。
   黑体为主；宋体只留关于页卦辞引用。
   ============================================================ */

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 72px; }
body { line-height: 1.65; -webkit-font-smoothing: antialiased; }
img, svg { display: block; max-width: 100%; }
button, input, textarea { font: inherit; color: inherit; }
a { color: inherit; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* ---------- Tokens ---------- */
:root {
  --bg:        #FFFFFF;
  --bg-soft:   #F7F8FA;             /* 浅灰分段 / 页脚底 */
  --ink:       #17181C;
  --ink-2:     #55575E;
  --ink-3:     #8B8E96;
  --line:      #EAEBEE;
  --line-2:    #DCDEE3;

  --accent:       #C0523A;          /* 帆红：唯一功能强调色 */
  --accent-hover: #A8412C;
  --accent-tint:  #FBEFEB;
  --grad-sail: linear-gradient(135deg, #D4643F 0%, #B03A28 58%, #8E2C20 100%);
  --grad-sky:  linear-gradient(180deg, #EEF3F8 0%, #FDFEFF 78%, #FFFFFF 100%);

  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
               "Microsoft YaHei", "Source Han Sans SC", system-ui, sans-serif;
  --font-song: "Songti SC", "STSong", "Noto Serif SC", "SimSun", serif;
  --font-mono: ui-monospace, "SF Mono", "Menlo", "Consolas", monospace;

  --r-s: 8px;
  --r-m: 12px;
  --r-l: 16px;
  --shadow: 0 1px 2px rgba(23, 24, 28, .04), 0 8px 24px -12px rgba(23, 24, 28, .08);

  --container: 1160px;
  --pad: clamp(20px, 4vw, 40px);
  --section: clamp(72px, 9vw, 120px);
  --ease: cubic-bezier(.25, .6, .35, 1);
}

/* ---------- Base ---------- */
body {
  font-family: var(--font-sans);
  font-size: 16px;
  color: var(--ink);
  background: var(--bg);
  -webkit-tap-highlight-color: transparent;
  overflow-x: clip;
}
::selection { background: var(--accent-tint); color: var(--ink); }
:focus-visible { outline: 2.5px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.container { max-width: var(--container); margin-inline: auto; padding-inline: var(--pad); }
.section { padding-top: var(--section); }

.skip-link {
  position: absolute; left: 16px; top: -52px; z-index: 100;
  background: var(--ink); color: #fff;
  padding: 10px 18px; border-radius: 0 0 var(--r-s) var(--r-s);
  font-size: 14px; font-weight: 600; text-decoration: none;
}
.skip-link:focus-visible { top: 0; }

/* ---------- 文字 ---------- */
.h1 {
  font-size: clamp(32px, 4.8vw, 52px);
  line-height: 1.2; font-weight: 800; letter-spacing: .01em;
}
.h2 {
  font-size: clamp(23px, 3vw, 32px);
  line-height: 1.3; font-weight: 800; letter-spacing: .01em;
}
.h1 em, .h2 em { font-style: normal; color: var(--accent); }
.kicker {
  font-size: 13px; font-weight: 700; letter-spacing: .12em;
  color: var(--ink-2); margin-bottom: 12px;
}
.kicker::before {
  content: ""; display: inline-block; width: 7px; height: 7px;
  background: var(--accent); border-radius: 2px;
  margin-right: 8px; vertical-align: 1px;
}
.lede {
  font-size: clamp(15px, 1.5vw, 16.5px); line-height: 1.8;
  color: var(--ink-2); max-width: 40em; margin-top: 14px;
}
.note { font-size: 12.5px; color: var(--ink-3); line-height: 1.7; }
.num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

/* ---------- 导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .86);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s var(--ease);
}
.nav.scrolled { border-bottom-color: var(--line); }
.nav__inner {
  max-width: var(--container); margin-inline: auto;
  padding: 12px var(--pad);
  display: flex; align-items: center; gap: 14px;
}
.brand {
  display: inline-flex; align-items: center; gap: 9px;
  font-weight: 700; font-size: 17px; letter-spacing: .02em;
  text-decoration: none; white-space: nowrap;
}
.brand img { width: 29px; height: 29px; }
.brand small {
  font-size: 9.5px; font-weight: 600; letter-spacing: .16em;
  color: var(--ink-3); align-self: flex-end; padding-bottom: 2px;
}
.nav__links { display: none; margin-left: auto; gap: 26px; }
.nav__links a {
  font-size: 14px; font-weight: 600; color: var(--ink-2);
  text-decoration: none;
  transition: color .15s var(--ease);
}
.nav__links a:hover { color: var(--ink); }
.nav__links a.on { color: var(--ink); font-weight: 700; }
.nav__cta { margin-left: auto; }
@media (min-width: 900px) {
  .nav__links { display: flex; }
  .nav__cta { margin-left: 0; }
}
@media (max-width: 480px) {
  .brand small { display: none; }
  .brand { font-size: 16px; }
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 46px; padding: 11px 24px;
  border: 0; border-radius: 10px;
  font-size: 15px; font-weight: 600; letter-spacing: .01em;
  text-decoration: none; cursor: pointer; white-space: nowrap;
  transition: background-color .16s var(--ease), color .16s var(--ease),
              border-color .16s var(--ease), box-shadow .16s var(--ease), transform .1s var(--ease);
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--accent); color: #fff; }
.btn--primary:hover { background: var(--accent-hover); }
.btn--ghost { background: #fff; color: var(--ink); box-shadow: inset 0 0 0 1px var(--line-2); }
.btn--ghost:hover { box-shadow: inset 0 0 0 1px var(--ink-3); }
.btn--sm { min-height: 38px; padding: 8px 16px; font-size: 13.5px; border-radius: 9px; }

/* ============================================================
   首屏：天光渐变 + 大帆船渡水
   ============================================================ */
.hero {
  background: var(--grad-sky);
  overflow: clip;
}
.hero__grid {
  display: grid; gap: clamp(28px, 4vw, 56px);
  align-items: center;
  padding-top: clamp(44px, 6vw, 84px);
  padding-bottom: clamp(36px, 5vw, 64px);
}
@media (min-width: 920px) { .hero__grid { grid-template-columns: 1.05fr .95fr; } }
.hero__kicker { font-size: 13.5px; font-weight: 700; letter-spacing: .12em; color: var(--ink-2); margin-bottom: 16px; }
.hero__kicker::before {
  content: ""; display: inline-block; width: 7px; height: 7px;
  background: var(--accent); border-radius: 2px;
  margin-right: 8px; vertical-align: 1px;
}
.hero__lede {
  font-size: clamp(15px, 1.5vw, 16.5px); line-height: 1.85;
  color: var(--ink-2); max-width: 34em; margin-top: 16px;
}
.hero__ctas { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

/* 帆船渡水主视觉 */
.shipfig { position: relative; }
.shipfig svg { width: min(520px, 100%); margin-inline: auto; height: auto; }
@media (prefers-reduced-motion: no-preference) {
  .shipfig .ship { animation: ride 7s ease-in-out infinite alternate; transform-origin: 50% 82%; }
  @keyframes ride { from { transform: rotate(-.9deg) translateY(0); } to { transform: rotate(.9deg) translateY(-5px); } }
}

/* 证据条：细边框票据式 */
.proof {
  margin-top: 0;
  display: flex; flex-wrap: wrap;
  gap: 10px;
  padding: 22px 0 0;
}
.proof span {
  font-size: 13px; font-weight: 600; color: var(--ink-2);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 8px 14px;
}

/* ============================================================
   服务卡：一张帆红渐变主打卡 + 两张白卡（智谱式不对称）
   ============================================================ */
.svc {
  margin-top: clamp(28px, 4vw, 44px);
  display: grid; gap: 16px;
}
@media (min-width: 920px) { .svc { grid-template-columns: 1.15fr 1fr 1fr; } }
.svc__card {
  border: 1px solid var(--line);
  border-radius: var(--r-l);
  background: #fff;
  padding: 26px 26px 22px;
  display: flex; flex-direction: column; gap: 10px;
  text-decoration: none;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease), transform .2s var(--ease);
}
.svc__card:hover { border-color: var(--line-2); box-shadow: var(--shadow); transform: translateY(-2px); }
.svc__tag { font-size: 12px; font-weight: 700; letter-spacing: .1em; color: var(--ink-3); }
.svc__card h3 { font-size: 19px; font-weight: 750; }
.svc__card p { font-size: 14px; color: var(--ink-2); line-height: 1.75; flex: 1; }
.svc__more { font-size: 13.5px; font-weight: 650; color: var(--ink); }
.svc__more::after { content: " →"; }
.svc__card--feature {
  background: var(--grad-sail);
  border-color: transparent;
  color: #fff;
}
.svc__card--feature .svc__tag { color: rgba(255, 255, 255, .75); }
.svc__card--feature p { color: rgba(255, 255, 255, .88); }
.svc__card--feature .svc__more { color: #fff; }

/* ============================================================
   总账表 + 三条规矩
   ============================================================ */
.ledger__grid { display: grid; gap: clamp(26px, 3.5vw, 44px); margin-top: clamp(26px, 3.5vw, 40px); }
@media (min-width: 960px) { .ledger__grid { grid-template-columns: 1.35fr 1fr; align-items: start; } }
.ledger__grid > * { min-width: 0; }

.table-wrap {
  overflow-x: auto;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-l);
}
.ledger table {
  width: 100%; border-collapse: collapse;
  font-size: 14.5px; line-height: 1.55;
  min-width: 520px;
}
.ledger caption {
  text-align: left; font-weight: 700; font-size: 15.5px;
  padding: 18px 20px 12px;
}
.ledger caption i { font-style: normal; font-weight: 600; font-size: 12px; color: var(--ink-3); margin-left: 10px; }
.ledger th, .ledger td {
  text-align: left; padding: 12px 20px;
  border-top: 1px solid var(--line);
  vertical-align: top;
}
.ledger thead th {
  color: var(--ink-3); background: var(--bg-soft);
  font-size: 12.5px; font-weight: 700; letter-spacing: .06em;
}
.ledger tbody th { font-weight: 600; color: var(--ink-2); width: 96px; font-size: 13px; }
.ledger td b { font-weight: 700; }
.ledger td .amt { color: var(--ink); font-weight: 750; font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.ledger tr.sum th, .ledger tr.sum td { background: var(--accent-tint); font-weight: 700; }
.ledger .foot { margin-top: 12px; }

.rules-list { counter-reset: rule; list-style: none; padding: 0; display: grid; gap: 12px; }
.rules-list li {
  counter-increment: rule;
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  padding: 16px 18px 14px 58px;
  font-size: 15px; line-height: 1.7;
}
.rules-list li::before {
  content: counter(rule, decimal-leading-zero);
  position: absolute; left: 18px; top: 17px;
  font-family: var(--font-mono);
  font-weight: 700; font-size: 16px;
  color: var(--accent);
}
.rules-list b { display: block; margin-bottom: 2px; }
.rules-list span { color: var(--ink-2); font-size: 13.5px; }
.rules-list .red { color: var(--accent); font-weight: 700; }

/* ============================================================
   路径图（航图挪到方法区）
   ============================================================ */
.chart { margin-top: clamp(26px, 4vw, 44px); position: relative; }
.chart svg { width: 100%; height: auto; display: block; }
.chart text { font-family: var(--font-sans); }
.chart .st-name { font-size: 14.5px; font-weight: 700; fill: var(--ink); }
.chart .st-sub { font-size: 11.5px; fill: var(--ink-2); }
.chart .lane-label { font-size: 11.5px; font-weight: 600; fill: var(--ink-3); }

.voyage { display: none; list-style: none; padding: 0; margin: 26px 0 0; }
.voyage li { position: relative; padding: 0 0 22px 30px; }
.voyage li::before {
  content: ""; position: absolute; left: 2px; top: 5px;
  width: 11px; height: 11px; border-radius: 50%;
  background: #fff; border: 2.5px solid var(--ink);
}
.voyage li.gate::before { border-color: var(--accent); background: var(--accent-tint); }
.voyage li.dest::before { border-color: var(--ink-3); }
.voyage b { display: block; font-size: 15px; }
.voyage span { display: block; font-size: 13px; color: var(--ink-2); margin-top: 2px; }
.voyage .boat-mark { position: absolute; left: -20px; top: -6px; width: 28px; height: 28px; }
@media (max-width: 859px) {
  .chart { display: none; }
  .voyage { display: block; }
}

/* ============================================================
   测算数字条（千问式大数字瓦片）
   ============================================================ */
.stats {
  margin-top: clamp(26px, 3.5vw, 40px);
  display: grid; gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}
.stats > div {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  padding: 20px 22px 16px;
}
.stats b {
  display: block; font-size: clamp(24px, 2.6vw, 32px); font-weight: 800;
  font-variant-numeric: tabular-nums; letter-spacing: .01em;
}
.stats b i { font-style: normal; font-size: .55em; font-weight: 700; color: var(--ink-2); margin-left: 2px; }
.stats span { display: block; font-size: 13px; color: var(--ink-2); margin-top: 4px; }
.stats .cap { font-size: 11.5px; color: var(--ink-3); }

/* ============================================================
   方案拆解（档案文档）
   ============================================================ */
.dossier {
  margin-top: 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-l);
  background: #fff;
}
.dossier__head {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px 16px;
  padding: 22px 26px 4px;
}
.dossier__head b { font-size: 16px; }
.dossier__stamp {
  font-size: 11.5px; font-weight: 700; letter-spacing: .08em;
  color: var(--accent); background: var(--accent-tint);
  border-radius: 7px; padding: 4px 10px;
  margin-left: auto;
}
.dossier__body { padding: 8px 26px 10px; }
.dossier__row { display: grid; gap: 4px 24px; padding: 14px 0; }
.dossier__row + .dossier__row { border-top: 1px solid var(--line); }
@media (min-width: 760px) { .dossier__row { grid-template-columns: 168px 1fr auto; align-items: baseline; } }
.dossier__row dt { font-weight: 700; font-size: 14.5px; }
.dossier__row dd { font-size: 14px; color: var(--ink-2); line-height: 1.7; }
.dossier__num {
  font-size: 13.5px; font-weight: 750; color: var(--ink); white-space: nowrap;
  font-family: var(--font-mono); font-variant-numeric: tabular-nums;
}
.dossier__num i { font-style: normal; font-weight: 600; color: var(--ink-3); font-size: 11.5px; margin-left: 4px; font-family: var(--font-sans); }
.dossier__foot {
  padding: 14px 26px 20px;
  border-top: 1px solid var(--line);
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px;
}

/* ============================================================
   三个问题 / 承诺 / 交付物 —— 细边框白卡
   ============================================================ */
.qa {
  margin-top: clamp(26px, 3.5vw, 40px);
  display: grid; gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
}
.qa__item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  padding: 22px 22px 20px;
}
.qa__item h3 { font-size: 16.5px; font-weight: 750; margin-bottom: 8px; }
.qa__item h3 i { font-style: normal; color: var(--accent); margin-right: 8px; font-family: var(--font-mono); font-size: 13.5px; }
.qa__item p { font-size: 14px; color: var(--ink-2); line-height: 1.75; }

.vows { margin-top: clamp(26px, 3.5vw, 40px); display: grid; gap: 14px; }
@media (min-width: 820px) { .vows { grid-template-columns: 1fr 1fr; } }
.vows > div {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-l);
  padding: 24px 26px;
}
.vows h3 { font-size: 17px; font-weight: 750; margin-bottom: 10px; }
.vows ul { list-style: none; padding: 0; }
.vows li {
  position: relative; padding: 8px 0 8px 22px;
  font-size: 14px; color: var(--ink-2); line-height: 1.7;
}
.vows--do li::before {
  content: ""; position: absolute; left: 1px; top: .9em;
  width: 9px; height: 3px; border-radius: 2px; background: var(--accent);
}
.vows--dont li::before {
  content: "✕"; position: absolute; left: 0; top: 8px;
  color: var(--ink-3); font-weight: 800; font-size: 12px;
}

.deliv {
  margin-top: clamp(26px, 3.5vw, 40px);
  display: grid; gap: 14px; counter-reset: dl;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.deliv > div {
  counter-increment: dl;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  padding: 20px 22px 18px;
}
.deliv h3 { font-size: 15.5px; font-weight: 750; margin: 2px 0 6px; }
.deliv h3::before {
  content: counter(dl, decimal-leading-zero);
  display: block;
  font-family: var(--font-mono); color: var(--accent); font-weight: 700;
  font-size: 13px; margin-bottom: 8px;
}
.deliv p { font-size: 13.5px; color: var(--ink-2); line-height: 1.7; }

/* ---------- 团队占位 ---------- */
.team__grid { margin-top: clamp(26px, 3.5vw, 40px); display: grid; gap: 14px; }
@media (min-width: 820px) { .team__grid { grid-template-columns: 1fr 1fr; } }
.slot {
  border: 1.5px dashed var(--line-2);
  border-radius: var(--r-l);
  min-height: 180px;
  display: grid; place-items: center; text-align: center;
  padding: 24px; color: var(--ink-3);
  background: var(--bg-soft);
}
.slot b { display: block; font-size: 14px; color: var(--ink-2); margin-bottom: 4px; }
.slot span { font-size: 12.5px; }

/* ============================================================
   黑色收尾 band（大厂式）
   ============================================================ */
.cta { padding-top: var(--section); }
.band {
  background: var(--ink);
  border-radius: 0;
  padding: clamp(52px, 7vw, 88px) 0;
  text-align: center;
  color: #fff;
}
.band .h2 { color: #fff; }
.band p {
  margin: 14px auto 0; font-size: clamp(14.5px, 1.4vw, 16px); line-height: 1.8;
  max-width: 34em; color: rgba(255, 255, 255, .72);
}
.band .btn { margin-top: 28px; }
.cta--flat { padding-top: var(--section); }

/* 联系页 */
.page-hero { padding-top: clamp(40px, 6vw, 72px); }
.page-hero .note { margin-top: 16px; }
.contact { padding-top: clamp(28px, 4vw, 44px); }
.contact__file {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-l);
  padding: clamp(24px, 4vw, 40px);
  display: grid; gap: clamp(24px, 4vw, 40px);
  align-items: center;
}
@media (min-width: 860px) { .contact__file { grid-template-columns: 1.25fr auto; } }
.contact__file .h2 { font-size: clamp(21px, 2.6vw, 28px); }
.contact__ways { list-style: none; padding: 0; margin: 20px 0 0; display: grid; gap: 11px; }
.contact__ways li { display: flex; align-items: baseline; gap: 14px; }
.contact__ways span { flex: 0 0 auto; font-size: 12px; letter-spacing: .14em; color: var(--ink-3); }
.contact__ways b { font-size: 15px; font-weight: 650; }
.contact__qr {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-m);
  padding: 16px 16px 14px;
  display: grid; justify-items: center; gap: 9px;
  color: var(--ink-2); font-size: 13px; font-weight: 600;
  justify-self: center;
}
.contact__qr img { border-radius: 6px; }

.ask3 { margin-top: clamp(22px, 3vw, 34px); max-width: 760px; padding-left: 0; display: grid; gap: 12px; }
.ask3 li {
  list-style: none; display: grid; grid-template-columns: 40px 1fr; gap: 14px;
  padding: 16px 20px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  font-size: 15px; align-items: baseline;
}
.ask3 i {
  font-style: normal; font-family: var(--font-mono); font-weight: 700;
  font-size: 15px; color: var(--accent);
}
.ask3 b { display: block; }
.ask3 span { font-size: 13px; color: var(--ink-3); }

.todo {
  margin-top: clamp(22px, 3vw, 34px);
  background: #fff;
  border: 1px solid var(--line);
  border-left: 5px solid var(--accent);
  border-radius: var(--r-s);
  padding: 14px 18px;
  font-size: 13.5px; line-height: 1.8; color: var(--ink);
}
.todo b { color: var(--accent); }

/* ---------- FAQ ---------- */
.faq { padding-top: var(--section); }
.faq__list { margin-top: clamp(22px, 3vw, 34px); max-width: 860px; display: grid; gap: 12px; }
.faq__item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-m);
}
.faq__item summary {
  list-style: none; cursor: pointer;
  display: flex; align-items: center; gap: 14px;
  padding: 17px 20px;
  font-size: 15.5px; font-weight: 700;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after {
  content: "＋"; margin-left: auto; color: var(--ink-3);
  font-size: 16px; transition: transform .2s var(--ease);
}
.faq__item[open] summary::after { transform: rotate(45deg); }
.faq__a { padding: 0 20px 18px; color: var(--ink-2); line-height: 1.8; max-width: 42em; font-size: 14px; }

/* ---------- 关于页 ---------- */
.about__grid { display: grid; gap: clamp(30px, 4.5vw, 64px); align-items: start; margin-top: clamp(24px, 3.5vw, 40px); }
@media (min-width: 920px) { .about__grid { grid-template-columns: 1.15fr .85fr; } }
.about__card {
  border: 1px solid var(--line);
  border-radius: var(--r-l);
  padding: 28px; background: #fff;
  max-width: 420px;
}
.about__card > img { width: 88px; height: 88px; margin-bottom: 12px; }
.about__note {
  font-family: var(--font-song);
  font-size: 15.5px; color: var(--ink-2); line-height: 2;
  margin-bottom: 14px;
}
.about__list { list-style: none; padding: 0; display: grid; gap: 9px; }
.about__list li { position: relative; padding-left: 20px; font-size: 14px; color: var(--ink-2); line-height: 1.65; }
.about__list li::before {
  content: ""; position: absolute; left: 0; top: .72em;
  width: 9px; height: 3px; border-radius: 2px; background: var(--accent);
}
.nobr { white-space: nowrap; }

/* ---------- 多栏页脚（大厂式） ---------- */
.footer {
  margin-top: var(--section);
  background: var(--bg-soft);
  border-top: 1px solid var(--line);
  padding: 48px 0 36px;
}
.footer__cols {
  display: grid; gap: 32px 24px;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
}
@media (max-width: 860px) { .footer__cols { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .footer__cols { grid-template-columns: 1fr; } }
.footer__brand {
  display: inline-flex; align-items: center; gap: 9px;
  font-weight: 700; font-size: 17px; color: var(--ink);
}
.footer__brand img { width: 26px; height: 26px; }
.footer__tag { margin-top: 12px; font-size: 13px; color: var(--ink-3); line-height: 1.8; max-width: 22em; }
.footer__col h4 {
  font-size: 13px; font-weight: 700; color: var(--ink-3);
  letter-spacing: .06em; margin-bottom: 12px;
}
.footer__col ul { list-style: none; padding: 0; display: grid; gap: 9px; }
.footer__col a { font-size: 13.5px; color: var(--ink-2); text-decoration: none; }
.footer__col a:hover { color: var(--ink); }
.footer__col li { font-size: 13.5px; color: var(--ink-2); }
.footer__legal {
  margin-top: 36px; padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 12px; color: var(--ink-3); line-height: 1.8;
}
.footer__legal a { color: var(--ink-2); }

/* ============================================================
   动效：仅路径图绘出（方法区）
   ============================================================ */
@media (prefers-reduced-motion: no-preference) {
  .chart .draw {
    stroke-dasharray: var(--len, 600);
    stroke-dashoffset: var(--len, 600);
    animation: draw 1s var(--ease) forwards;
  }
  .chart .draw.d2 { animation-delay: .55s; }
  .chart .draw.d3 { animation-delay: .95s; }
  .chart .st { opacity: 0; animation: appear .5s var(--ease) forwards; }
  .chart .st.s1 { animation-delay: .15s; }
  .chart .st.s2 { animation-delay: .5s; }
  .chart .st.s3 { animation-delay: .85s; }
  .chart .st.s4 { animation-delay: 1.15s; }
  .chart .st.s5 { animation-delay: 1.45s; }
  .chart .st.s6 { animation-delay: 1.7s; }
  .chart .boat { animation: sail 1.1s var(--ease) 1.2s both; }
  .chart .gate-pulse { animation: gate 1s var(--ease) 1.5s both; }
  @keyframes draw { to { stroke-dashoffset: 0; } }
  @keyframes appear { from { opacity: 0; } to { opacity: 1; } }
  @keyframes sail { from { transform: translateX(-10px); } to { transform: translateX(0); } }
  @keyframes gate {
    0% { opacity: 0; } 40% { opacity: 1; }
    60% { opacity: .35; } 100% { opacity: 1; }
  }
}
@media (prefers-reduced-motion: reduce) {
  .chart .draw { stroke-dashoffset: 0 !important; }
  .chart .st, .chart .boat, .chart .gate-pulse { opacity: 1 !important; animation: none !important; }
  .shipfig .ship { animation: none !important; }
}