@import url('https://fonts.googleapis.com/css2?family=Karla:wght@300;400;500;600;700&family=Playfair+Display+SC:wght@400;700&display=swap');

:root {
  --ink: #001e3c;
  --ink-deep: #00121f;
  --ink-soft: #012a44;
  --ink-lift: #023554;
  --mint: #99ffcc;
  --neon: #00ff41;
  --paper: #e9fff5;
  --paper-dim: #a6c9bf;
  --display: 'Playfair Display SC', 'Songti SC', 'Noto Serif SC', Georgia, serif;
  --body: 'Karla', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --rail: 68px;
}

*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  padding-bottom: calc(var(--rail) + 18px);
  font-family: var(--body);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.78;
  color: var(--paper);
  background-color: var(--ink-deep);
  background-image:
    radial-gradient(46rem 30rem at 90% -8%, rgba(0, 255, 65, 0.17), transparent 62%),
    radial-gradient(38rem 28rem at 2% 46%, rgba(153, 255, 204, 0.13), transparent 66%),
    radial-gradient(52rem 36rem at 72% 108%, rgba(0, 255, 65, 0.11), transparent 70%);
  background-attachment: fixed;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; }

a { color: var(--neon); }

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 80;
  padding: 0.9rem 1.2rem;
  background: var(--mint);
  color: var(--ink);
  text-decoration: none;
}
.skip:focus { left: 0; }

/* ---------- 全屏遮罩菜单 ---------- */
.veil {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: flex;
  flex-direction: column;
  padding: 1.4rem 1.4rem 2rem;
  background:
    radial-gradient(40rem 30rem at 84% 4%, rgba(0, 255, 65, 0.16), transparent 60%),
    linear-gradient(162deg, rgba(0, 30, 60, 0.985), rgba(0, 18, 31, 0.995));
  backdrop-filter: blur(14px);
  opacity: 0;
  visibility: hidden;
  overflow-y: auto;
  transition: opacity 0.36s ease, visibility 0.36s ease;
}
.veil.is-open { opacity: 1; visibility: visible; }

.veil-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1rem;
}
.veil-brand {
  font-family: var(--display);
  font-size: 1.05rem;
  letter-spacing: 0.2em;
  color: var(--mint);
}
.veil-close {
  min-height: 44px;
  padding: 0 1.1rem;
  font-family: var(--body);
  font-size: 1rem;
  color: var(--mint);
  background: transparent;
  border: 1px solid rgba(153, 255, 204, 0.6);
  border-radius: 0;
  cursor: pointer;
}
.veil-close:hover { background: var(--mint); color: var(--ink); }

.veil-nav ol {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 0;
}
.veil-item a {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  min-height: 54px;
  padding: 0.65rem 0.2rem;
  font-family: var(--display);
  font-size: clamp(1.3rem, 5.2vw, 2.1rem);
  line-height: 1.3;
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid rgba(153, 255, 204, 0.16);
  opacity: 0;
  transform: translateY(12px);
}
.veil-item a:hover,
.veil-item a:focus { color: var(--mint); }
.veil.is-open .veil-item a {
  opacity: 1;
  transform: none;
  transition: opacity 0.42s ease, transform 0.42s ease, color 0.2s ease;
  transition-delay: calc(var(--i) * 55ms);
}
.veil-num {
  font-family: var(--body);
  font-size: 0.78rem;
  letter-spacing: 0.24em;
  color: var(--neon);
}
.veil-foot {
  margin: auto 0 0;
  padding-top: 2rem;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  color: var(--paper-dim);
}

/* ---------- 首屏 ---------- */
.hero {
  position: relative;
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  min-height: 100vh;
  min-height: 100svh;
  padding: 7rem 1.6rem 6.5rem;
  overflow: hidden;
  scroll-margin-top: 96px;
}
.hero-figure {
  position: absolute;
  inset: -6% 0 0;
  margin: 0;
  will-change: transform;
}
.hero-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(1.06) contrast(1.03);
  animation: breathe 16s ease-in-out infinite;
}
.hero-wash {
  height: 100%;
  background:
    radial-gradient(28rem 20rem at 78% 22%, rgba(0, 255, 65, 0.4), transparent 62%),
    radial-gradient(30rem 24rem at 12% 78%, rgba(153, 255, 204, 0.35), transparent 68%),
    linear-gradient(150deg, #013453, #00121f);
}
@keyframes breathe {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}
.hero-veil {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(30rem 24rem at 74% 66%, rgba(0, 255, 65, 0.18), transparent 66%),
    linear-gradient(202deg, rgba(0, 30, 60, 0.28) 8%, rgba(0, 18, 31, 0.9) 68%, rgba(0, 18, 31, 0.98));
}
.hero-cap {
  position: absolute;
  top: 1.6rem;
  left: 1.6rem;
  font-size: 0.8rem;
  letter-spacing: 0.28em;
  color: var(--mint);
}
.hero-ghost {
  position: absolute;
  right: -0.06em;
  top: 9%;
  font-family: var(--display);
  font-size: clamp(7rem, 27vw, 20rem);
  line-height: 0.82;
  letter-spacing: 0.02em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(153, 255, 204, 0.4);
  pointer-events: none;
  will-change: transform;
}
.hero-copy {
  position: relative;
  max-width: 33rem;
  text-align: right;
  z-index: 2;
}
.hero-kicker {
  margin: 0 0 0.9rem;
  font-size: 0.92rem;
  letter-spacing: 0.16em;
  color: var(--mint);
}
.hero h1 {
  margin: 0 0 1rem;
  font-family: var(--display);
  font-size: clamp(2rem, 7vw, 4.1rem);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: 0.01em;
  color: var(--paper);
  text-shadow: 0 2px 30px rgba(0, 18, 31, 0.65);
}
.hero-sub {
  margin: 0 0 1.7rem;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--paper-dim);
}
.hero-jump {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 0.7rem 1.6rem;
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--ink);
  background: var(--mint);
  border-radius: 0;
  text-decoration: none;
  transition: background 0.25s ease, transform 0.25s ease;
}
.hero-jump:hover,
.hero-jump:focus { background: var(--neon); transform: translateY(-2px); }

/* ---------- 正文区 ---------- */
main div { scroll-margin-top: 96px; }

.doc {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 19.5rem;
  gap: 3rem;
  align-items: start;
  max-width: 1180px;
  margin: 0 auto;
  padding: 4.5rem 1.5rem 3rem;
}
.doc-body { min-width: 0; }

.doc-body div {
  margin: 0 0 1.5rem;
  padding: 2.1rem 1.9rem 1.6rem;
  background: var(--ink-soft);
  border-radius: 0;
}
.doc-body div:nth-child(even) { background: var(--ink-lift); }

.doc-body h2 {
  margin: 0 0 0.55rem;
  font-family: var(--display);
  font-size: clamp(1.5rem, 3.2vw, 2rem);
  font-weight: 700;
  line-height: 1.28;
  color: var(--mint);
}
.doc-body h3 {
  margin: 1.6rem 0 0.5rem;
  font-family: var(--display);
  font-size: 1.18rem;
  line-height: 1.35;
  color: var(--mint);
}
.doc-body hr {
  width: 4rem;
  height: 2px;
  margin: 0.15rem 0 1.15rem;
  border: 0;
  background: var(--neon);
  opacity: 0.85;
}
.doc-body p { margin: 0 0 1rem; }
.doc-body p:last-child { margin-bottom: 0.4rem; }
.doc-body strong { color: var(--mint); }
.doc-body ul,
.doc-body ol { margin: 0 0 1rem; padding-left: 1.25rem; }
.doc-body li { margin: 0.35rem 0; }
.doc-body li::marker { color: var(--neon); }
.doc-body a { color: var(--neon); text-underline-offset: 3px; }
.doc-body figure { margin: 1.2rem 0; }
.doc-body figure img { display: block; width: 100%; }
.doc-body figcaption { font-size: 0.86rem; color: var(--paper-dim); padding-top: 0.45rem; }
.doc-body blockquote {
  margin: 1.2rem 0;
  padding: 0.35rem 0 0.35rem 1.05rem;
  border-left: 3px solid var(--neon);
  color: var(--paper-dim);
}
.doc-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.95rem;
}
.doc-body th,
.doc-body td {
  padding: 0.55rem 0.6rem;
  text-align: left;
  border-bottom: 1px solid rgba(153, 255, 204, 0.2);
}
.doc-body code {
  font-size: 0.92rem;
  padding: 0.1rem 0.35rem;
  background: rgba(0, 255, 65, 0.12);
  color: var(--mint);
}

/* ---------- 右侧旁栏 ---------- */
.doc-aside {
  position: sticky;
  top: 1.5rem;
  padding: 1.7rem 1.4rem 1.5rem;
  background: var(--mint);
  color: var(--ink);
  border-radius: 0;
}
.doc-aside h2 {
  margin: 0 0 0.5rem;
  font-family: var(--display);
  font-size: 1.3rem;
  line-height: 1.3;
  color: var(--ink);
}
.doc-aside hr {
  width: 3rem;
  height: 2px;
  margin: 0 0 1rem;
  border: 0;
  background: var(--ink);
}
.aside-lead {
  margin: 0 0 0.9rem;
  font-size: 0.92rem;
  line-height: 1.7;
}
.aside-list {
  margin: 0 0 1.1rem;
  padding: 0;
  list-style: none;
  counter-reset: aside;
}
.aside-list li { counter-increment: aside; }
.aside-list a {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  min-height: 42px;
  padding: 0.4rem 0;
  font-size: 0.94rem;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 30, 60, 0.22);
}
.aside-list a::before {
  content: counter(aside, decimal-leading-zero);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  opacity: 0.62;
}
.aside-list a:hover { color: #00361c; }
.aside-tip {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.65;
  color: rgba(0, 30, 60, 0.74);
}

/* ---------- 页脚 ---------- */
.leaf-foot {
  display: grid;
  grid-template-columns: 1.35fr 0.95fr 1fr;
  gap: 2.5rem;
  max-width: 1180px;
  margin: 0 auto;
  padding: 3.4rem 1.5rem 2.2rem;
  border-top: 1px solid rgba(153, 255, 204, 0.26);
}
.foot-mark {
  margin: 0 0 0.8rem;
  font-family: var(--display);
  font-size: clamp(1.9rem, 6.4vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: 0.03em;
  color: var(--mint);
}
.foot-desc {
  margin: 0;
  max-width: 24rem;
  font-size: 0.92rem;
  line-height: 1.72;
  color: var(--paper-dim);
}
.foot-index h2 {
  margin: 0 0 0.4rem;
  font-family: var(--body);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  color: var(--mint);
}
.foot-index hr {
  width: 2.6rem;
  height: 2px;
  margin: 0 0 0.9rem;
  border: 0;
  background: var(--neon);
}
.foot-index dl { margin: 0; }
.foot-index dt { margin: 0; }
.foot-index dt a {
  display: block;
  min-height: 40px;
  padding: 0.5rem 0 0.15rem;
  font-size: 0.96rem;
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid rgba(153, 255, 204, 0.14);
}
.foot-index dt a:hover { color: var(--mint); }
.foot-index dd {
  margin: 0 0 0.35rem;
  font-size: 0.78rem;
  color: rgba(166, 201, 191, 0.85);
}
.foot-base { text-align: center; }
.foot-call { margin: 0 0 1.1rem; }
.foot-call a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 1.2rem;
  font-size: 0.92rem;
  color: var(--ink);
  background: var(--mint);
  text-decoration: none;
  border-radius: 0;
}
.foot-call a:hover { background: var(--neon); }
.foot-copy {
  margin: 0 0 0.5rem;
  font-size: 0.86rem;
  letter-spacing: 0.08em;
  color: var(--mint);
}
.foot-note {
  margin: 0;
  font-size: 0.79rem;
  line-height: 1.7;
  color: rgba(166, 201, 191, 0.86);
}

/* ---------- 底部固定条 ---------- */
.rail {
  position: fixed;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  height: var(--rail);
  padding: 0 0.6rem;
  background: rgba(0, 18, 31, 0.95);
  border-top: 1px solid rgba(153, 255, 204, 0.24);
  backdrop-filter: blur(10px);
}
.rail a,
.rail button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 0.85rem;
  font-family: var(--body);
  font-size: 0.94rem;
  color: var(--paper);
  text-decoration: none;
}
.rail-logo { padding: 0 0.4rem; }
.rail-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  background: var(--mint);
  color: var(--ink);
  border-radius: 0;
}
.rail-mark img { display: block; width: 26px; height: 26px; object-fit: contain; }
.rail-glyph { font-family: var(--display); font-size: 1.1rem; }
.rail-link:hover { color: var(--mint); }
.rail-phone {
  margin-left: auto;
  font-weight: 600;
  color: var(--ink) !important;
  background: var(--mint);
}
.rail-phone:hover { background: var(--neon); }
.rail-burger {
  gap: 0.5rem;
  color: var(--mint);
  background: transparent;
  border: 1px solid rgba(153, 255, 204, 0.45);
  border-radius: 0;
  cursor: pointer;
}
.rail-burger:hover { background: rgba(153, 255, 204, 0.14); }
.burger-bar {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  box-shadow: 0 -6px 0 currentColor, 0 6px 0 currentColor;
}

/* ---------- 入场 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.62s ease, transform 0.62s ease;
}
.reveal.in { opacity: 1; transform: none; }

/* ---------- 断点 ---------- */
@media (max-width: 1000px) {
  .doc { grid-template-columns: minmax(0, 1fr); gap: 2.2rem; }
  .doc-aside { position: static; }
  .leaf-foot { grid-template-columns: 1fr 1fr; }
  .foot-brand { grid-column: 1 / -1; }
  .foot-base { grid-column: 1 / -1; text-align: left; }
}

@media (max-width: 760px) {
  body { font-size: 16.5px; }
  .hero { padding: 6rem 1.15rem 5.5rem; }
  .hero-cap { left: 1.15rem; top: 1.15rem; font-size: 0.72rem; }
  .hero-ghost { top: 13%; }
  .doc { padding: 3.2rem 1.1rem 2.4rem; }
  .leaf-foot { grid-template-columns: 1fr; gap: 1.9rem; padding: 2.6rem 1.1rem 2rem; }
  .foot-mark { font-size: clamp(1.8rem, 11vw, 2.6rem); }
}

@media (max-width: 560px) {
  .rail-link { display: none; }
  .doc-body div { padding: 1.6rem 1.15rem 1.2rem; }
  .rail-phone { padding: 0 0.9rem; }
  .burger-txt { font-size: 0.88rem; }
}

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

button[aria-expanded]{min-width:44px;min-height:44px}