/* ============================================================
   SAILLM 赛能 AI 官网 · 墨橄榄深底方案(品牌视觉识别手册 V1.2)
   色彩:墨橄榄 #2F3518 / 纯白 #FFFFFF / 橄榄中间档 #4B5426
        Sage 提亮档 #A2AA88 / 雾灰 #E6E7DF / 麦芒黄 #D8A03D(<10%)
   字体:Montserrat(英文/数字)+ 思源黑体系(中文)
   ============================================================ */

@font-face {
  font-family: "Montserrat";
  src: url("/assets/fonts/montserrat-latin-var.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

:root {
  --brand-deep: #2f3518;
  --brand-deep-2: #3e4620; /* 同色系提亮:面板底 */
  --brand-deep-3: #4b5426; /* 同色系提亮:悬停 */
  --brand-hi: #ffffff;
  --brand-mid: #4b5426;
  --brand-soft: #a2aa88;
  --brand-soft-hi: #aeb697;
  --brand-mute: #e6e7df;
  --brand-gold: #d8a03d;
  --brand-gold-text: #dfaa4a;
  --sig-pine: #2f7a4f;
  --line: rgba(162, 170, 136, 0.16);
  --font:
    "Montserrat", "Source Han Sans SC", "Noto Sans SC", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  --mono: "JetBrains Mono", "SF Mono", Consolas, monospace;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font);
  background: var(--brand-deep);
  color: var(--brand-hi);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}
::selection {
  background: rgba(216, 160, 61, 0.35);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

h1,
h2,
h3,
h4 {
  line-height: 1.25;
  font-weight: 700;
}

/* ---------- 通用元件 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 30px;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition:
    transform 0.25s var(--ease),
    box-shadow 0.25s var(--ease),
    background 0.25s,
    border-color 0.25s;
  will-change: transform;
}
.btn-amber {
  background: var(--brand-gold);
  color: var(--brand-deep);
}
.btn-amber:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(216, 160, 61, 0.28);
  background: #dfb05e;
}
.btn-ghost {
  border: 1px solid rgba(162, 170, 136, 0.45);
  color: var(--brand-hi);
  background: rgba(162, 170, 136, 0.06);
}
.btn-ghost:hover {
  border-color: var(--brand-soft);
  background: rgba(162, 170, 136, 0.14);
  transform: translateY(-2px);
}
.btn-s {
  padding: 9px 20px;
  font-size: 14px;
  border-radius: 8px;
}
.nav-links .btn-amber {
  color: var(--brand-deep);
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.32em;
  color: var(--brand-soft);
  text-transform: uppercase;
}
.tick {
  display: inline-block;
  width: 26px;
  height: 2px;
  background: var(--brand-gold);
  flex: none;
}

/* 滚动浮现 */
.js .reveal {
  opacity: 0;
  transform: translateY(26px);
  transition:
    opacity 0.7s var(--ease),
    transform 0.7s var(--ease);
  transition-delay: var(--d, 0s);
}
.reveal.in {
  opacity: 1;
  transform: none;
}

/* ============================================================
   导航
   ============================================================ */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  height: 72px; /* 手册 7.1:导航栏高 72px */
  transition:
    background 0.35s,
    backdrop-filter 0.35s,
    border-color 0.35s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(47, 53, 24, 0.78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand-mark {
  width: 52px;
  height: auto;
}
.brand-wordmark {
  width: 102px;
  height: auto;
}
.brand-sep {
  width: 1px;
  height: 16px;
  background: rgba(162, 170, 136, 0.4);
}
.brand-cn {
  font-size: 14px;
  font-weight: 500;
  color: var(--brand-mute);
  letter-spacing: 0.12em;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
}
.nav-links > a {
  font-size: 15px;
  color: var(--brand-mute);
  transition: color 0.2s;
  position: relative;
}
.nav-links > a:hover {
  color: var(--brand-hi);
}
.nav-links > a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -6px;
  height: 2px;
  background: var(--brand-gold);
  transition: right 0.3s var(--ease);
}
.nav-links > a:not(.btn):hover::after {
  right: 0;
}
.nav-login {
  color: var(--brand-hi) !important;
}
.nav-burger {
  display: none;
  background: none;
  border: 0;
  width: 40px;
  height: 40px;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  align-items: center;
}
.nav-burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--brand-hi);
  transition:
    transform 0.3s,
    opacity 0.3s;
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
#sailCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
/* 远航网格:0.5px 细线 + 十字定位点(手册 5.2) */
.hero-grid,
.cta-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(230, 231, 223, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(230, 231, 223, 0.045) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(
    ellipse 90% 80% at 50% 40%,
    #000 30%,
    transparent 75%
  );
  -webkit-mask-image: radial-gradient(
    ellipse 90% 80% at 50% 40%,
    #000 30%,
    transparent 75%
  );
}
.hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  padding-top: 100px;
  padding-bottom: 140px;
}
.hero-copy {
  max-width: 640px;
}
.hero h1 {
  font-size: clamp(44px, 6.2vw, 76px);
  font-weight: 700;
  letter-spacing: 0.01em;
  margin: 22px 0 14px;
}
.hero-en {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.38em;
  color: var(--brand-soft);
  margin-bottom: 26px;
}
.lede {
  font-size: 18px;
  color: var(--brand-mute);
  max-width: 560px;
  margin-bottom: 36px;
}
.lede b {
  color: var(--brand-hi);
  font-weight: 700;
}
.cta-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.cta-note {
  margin-top: 18px;
  font-size: 13px;
  color: var(--brand-soft);
}
.cta-note a {
  color: var(--brand-soft);
  border-bottom: 1px solid rgba(162, 170, 136, 0.4);
}
.cta-note a:hover {
  color: var(--brand-hi);
}

/* 帆影波纹(手册 5.1:首屏底部 10% 透明度,自左向右漂移) */
.hero-ripple {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 140px;
  opacity: 0.1;
  pointer-events: none;
  overflow: hidden;
}
.ripple {
  width: 200%;
  height: 100%;
  display: block;
}
.ripple path {
  fill: none;
  stroke: var(--brand-hi);
  stroke-width: 1.6;
}
.ripple-drift {
  animation: drift 46s linear infinite;
}
@keyframes drift {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-1440px);
  }
}

.scroll-cue {
  position: absolute;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  z-index: 3;
  width: 26px;
  height: 42px;
  border: 1.5px solid rgba(162, 170, 136, 0.5);
  border-radius: 14px;
  display: flex;
  justify-content: center;
}
.scroll-cue span {
  width: 3px;
  height: 8px;
  border-radius: 2px;
  background: var(--brand-soft);
  margin-top: 7px;
  animation: cue 1.8s var(--ease) infinite;
}
@keyframes cue {
  0% {
    transform: translateY(0);
    opacity: 1;
  }
  70% {
    transform: translateY(14px);
    opacity: 0;
  }
  100% {
    opacity: 0;
  }
}

/* ============================================================
   数字条
   ============================================================ */
.metrics {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--brand-deep-2);
}
.metrics-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding-top: 44px;
  padding-bottom: 44px;
}
.metric {
  text-align: center;
}
.metric .num {
  font-size: 46px;
  font-weight: 800;
  letter-spacing: 0.02em;
}
.metric .unit {
  font-size: 18px;
  font-weight: 600;
  color: var(--brand-gold-text);
  margin-left: 4px;
}
.metric p {
  font-size: 14px;
  color: var(--brand-soft-hi);
  margin-top: 2px;
}

/* ============================================================
   通用分区
   ============================================================ */
.section {
  padding: 120px 0;
  position: relative;
}
.sec-alt {
  background: var(--brand-deep-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.sec-head {
  max-width: 720px;
  margin-bottom: 64px;
}
.sec-head h2 {
  font-size: clamp(30px, 4vw, 44px);
  margin: 18px 0 14px;
}
.sec-sub {
  font-size: 17px;
  color: var(--brand-soft);
}

/* 三卡 */
.cards-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.card {
  background: var(--brand-deep-2);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 34px 30px;
  transition:
    transform 0.35s var(--ease),
    border-color 0.35s,
    background 0.35s;
}
.sec-alt .card,
.metrics ~ .section .card {
  background: var(--brand-deep-2);
}
#product .card {
  background: var(--brand-deep-2);
}
.card:hover {
  transform: translateY(-6px);
  border-color: rgba(162, 170, 136, 0.4);
  background: var(--brand-deep-3);
}
.card h3 {
  font-size: 21px;
  margin-bottom: 12px;
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}
.card-en {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.24em;
  color: var(--brand-soft);
}
.card p {
  font-size: 15px;
  color: var(--brand-mute);
}
/* 线性图标:2px 圆角端点,深色底上纯白主形 + 麦芒黄点睛(手册 5.3) */
.card-ic {
  width: 52px;
  height: 52px;
  border-radius: 13px;
  background: rgba(162, 170, 136, 0.1);
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
}
.card-ic svg {
  width: 26px;
  height: 26px;
  fill: none;
  stroke: var(--brand-hi);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.card-ic svg .ac {
  stroke: var(--brand-gold);
}

/* 五步循环条(理解→解答→推荐→促成→沉淀) */
.loop {
  margin-top: 56px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--brand-deep-2);
  padding: 30px 34px;
  text-align: center;
}
.loop-lead {
  font-size: 14px;
  color: var(--brand-soft);
  margin-bottom: 18px;
}
.loop-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}
.loop-step {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 22px;
  background: rgba(162, 170, 136, 0.06);
  transition:
    transform 0.3s var(--ease),
    border-color 0.3s;
}
.loop-step:hover {
  transform: translateY(-3px);
  border-color: rgba(162, 170, 136, 0.45);
}
.loop-step b {
  font-size: 16px;
}
.loop-step i {
  font-style: normal;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.22em;
  color: var(--brand-soft);
}
.loop-hot {
  border-color: rgba(216, 160, 61, 0.5);
}
.loop-hot i {
  color: var(--brand-gold);
}
.loop-arrow {
  color: var(--brand-soft);
  font-size: 16px;
}
.loop-note {
  margin-top: 18px;
  font-size: 13px;
  color: var(--brand-soft);
}

/* ============================================================
   平台:交替 feature 行
   ============================================================ */
.feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  padding: 56px 0;
}
.feature + .feature {
  border-top: 1px solid var(--line);
}
.f-rev .f-copy {
  order: 2;
}
.f-rev .f-visual {
  order: 1;
}
.f-eyebrow {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.3em;
  color: var(--brand-gold);
  margin-bottom: 14px;
}
.feature h3 {
  font-size: clamp(24px, 2.6vw, 32px);
  margin-bottom: 14px;
}
.f-copy > p {
  color: var(--brand-mute);
  font-size: 16px;
}
.f-list {
  list-style: none;
  margin-top: 22px;
  display: grid;
  gap: 12px;
}
.f-list li {
  padding-left: 26px;
  position: relative;
  color: var(--brand-mute);
  font-size: 15px;
}
.f-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 12px;
  height: 6px;
  border-left: 2px solid var(--brand-gold);
  border-bottom: 2px solid var(--brand-gold);
  transform: rotate(-45deg);
}

/* mock 通用外框 */
.mock {
  background: linear-gradient(
    160deg,
    var(--brand-deep-3),
    var(--brand-deep-2)
  ); /* 同色系渐变(手册允许;禁高饱和/蓝紫) */
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px;
  position: relative;
  overflow: hidden;
}

/* 建站 mock */
.mock-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 18px;
}
.mock-bar i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(162, 170, 136, 0.35);
}
.mock-bar em {
  font-style: normal;
  font-size: 12px;
  color: var(--brand-soft);
  background: rgba(162, 170, 136, 0.1);
  border-radius: 6px;
  padding: 3px 12px;
  margin-left: 8px;
  letter-spacing: 0.04em;
}
.ms-hero {
  background: rgba(162, 170, 136, 0.08);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 20px;
  display: grid;
  gap: 10px;
}
.ms-line {
  height: 10px;
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.35);
}
.ms-line.w60 {
  width: 60%;
}
.ms-line.w40 {
  width: 40%;
  background: rgba(162, 170, 136, 0.3);
}
.ms-cta {
  width: 84px;
  height: 24px;
  border-radius: 6px;
  background: var(--brand-gold);
  opacity: 0.9;
}
.ms-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 10px;
}
.ms-cols span {
  height: 52px;
  border-radius: 8px;
  background: rgba(162, 170, 136, 0.1);
  border: 1px solid var(--line);
}
.vis-check {
  margin-top: 16px;
  border-top: 1px dashed var(--line);
  padding-top: 14px;
}
.vc-title {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--brand-soft);
  margin-bottom: 8px;
}
.vc-item {
  font-size: 13.5px;
  padding: 3px 0;
  color: var(--brand-mute);
}
.vc-item.ok {
  color: #6db489;
}
.vc-item.warn {
  color: var(--brand-gold);
}

/* 聊天演示 */
.chat-demo {
  padding: 0;
}
.cd-head {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  font-weight: 600;
}
.cd-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #6db489;
  box-shadow: 0 0 8px rgba(109, 180, 137, 0.8);
}
.cd-head em {
  font-style: normal;
  margin-left: auto;
  font-size: 11px;
  color: var(--brand-soft);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 1px 8px;
}
.cd-body {
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 380px;
}
.msg {
  max-width: 82%;
  padding: 10px 15px;
  border-radius: 13px;
  font-size: 14.5px;
}
/* 手册 7.4:用户侧橄榄中间档、AI 侧墨橄榄描边 */
.m-user {
  align-self: flex-end;
  background: var(--brand-mid);
  color: var(--brand-hi);
  border-bottom-right-radius: 4px;
}
.m-ai {
  align-self: flex-start;
  background: rgba(162, 170, 136, 0.08);
  border: 1px solid var(--line);
  border-bottom-left-radius: 4px;
  color: var(--brand-mute);
}
.cd-card {
  align-self: flex-start;
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(162, 170, 136, 0.08);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  max-width: 88%;
}
.cdc-img {
  width: 44px;
  height: 44px;
  border-radius: 9px;
  background: var(--brand-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  flex: none;
}
.cdc-img img {
  width: 28px;
}
.cdc-info {
  display: flex;
  flex-direction: column;
}
.cdc-info b {
  font-size: 14px;
}
.cdc-info i {
  font-style: normal;
  font-size: 12.5px;
  color: var(--brand-soft);
}
.cdc-btn {
  flex: none;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--brand-deep);
  background: var(--brand-gold);
  border-radius: 7px;
  padding: 6px 12px;
}
.cd-lead {
  align-self: stretch;
  text-align: center;
  font-size: 13px;
  color: #6db489;
  background: rgba(47, 122, 79, 0.12);
  border: 1px solid rgba(47, 122, 79, 0.35);
  border-radius: 9px;
  padding: 8px 12px;
}
/* ⚠️ 这四处微文案(演示声明 / 示意数据 / slogan / 版权)的透明度不要再往下压:
   满屏文案里唯独两条**免责声明**最不可读过(2026-08-05 W19-5),而仓库有明文的
   《功能命名诚实原则》—— 声明写了却看不清,等于打了折。现均 ≥4.5:1(WCAG AA)。 */
.cd-note {
  text-align: center;
  font-size: 12px;
  color: rgba(162, 170, 136, 0.86);
  padding: 0 0 12px;
}
/* 步进出现 */
.js .chat-demo [data-step] {
  opacity: 0;
  transform: translateY(10px) scale(0.98);
  transition:
    opacity 0.45s var(--ease),
    transform 0.45s var(--ease);
}
.js .chat-demo [data-step].show {
  opacity: 1;
  transform: none;
}

/* 资料库 mock */
.mock-kb {
  display: grid;
  gap: 10px;
}
.kb-row {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(162, 170, 136, 0.07);
  border: 1px solid var(--line);
  border-radius: 11px;
  padding: 12px 14px;
}
.kb-ic {
  font-size: 18px;
}
.kb-t {
  display: flex;
  flex-direction: column;
}
.kb-t b {
  font-size: 14px;
}
.kb-t i {
  font-style: normal;
  font-size: 12px;
  color: var(--brand-soft);
}
.kb-tag {
  font-style: normal;
  margin-left: auto;
  font-size: 11.5px;
  border-radius: 5px;
  padding: 2px 9px;
}
.kb-tag.pub {
  color: var(--brand-soft);
  border: 1px solid var(--line);
}
.kb-tag.int {
  color: var(--brand-gold);
  border: 1px solid rgba(216, 160, 61, 0.4);
}
.kb-gap {
  margin-top: 6px;
  border-top: 1px dashed var(--line);
  padding-top: 12px;
}
.kb-gap-t {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--brand-soft);
  margin-bottom: 6px;
}
.kb-gap-i {
  font-size: 13.5px;
  color: var(--brand-mute);
  display: flex;
  justify-content: space-between;
  padding: 4px 0;
}
.kb-gap-i em {
  font-style: normal;
  color: var(--brand-gold);
  font-size: 12px;
}
.kb-gap-i.done,
.kb-gap-i.done em {
  color: #6db489;
}

/* 漏斗 mock */
.mf-title {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--brand-soft);
  margin-bottom: 16px;
  display: flex;
  justify-content: space-between;
}
.mf-title em {
  font-style: normal;
  font-size: 12px;
  opacity: 0.88;
}
.mf-row {
  display: grid;
  grid-template-columns: 44px 1fr;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.mf-row > span {
  font-size: 13px;
  color: var(--brand-mute);
}
.mf-bar i {
  display: block;
  height: 30px;
  border-radius: 7px;
  background: var(--brand-mid); /* 数据可视化:主系列橄榄中间档 */
  width: 0;
  font-style: normal;
  font-size: 13px;
  font-weight: 600;
  display: flex;
  align-items: center;
  padding: 0 10px;
  color: var(--brand-hi);
  transition: width 1.1s var(--ease);
  min-width: 0;
  overflow: hidden;
  white-space: nowrap;
}
.mf-hot i {
  background: var(--brand-gold);
  color: var(--brand-deep);
} /* 强调系列麦芒黄 */
.in .mf-bar i {
  width: var(--w);
}
.mf-audit {
  margin-top: 18px;
  border-top: 1px dashed var(--line);
  padding-top: 12px;
  display: grid;
  gap: 8px;
}
.mf-audit p {
  font-size: 13px;
  color: var(--brand-mute);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.mf-audit em {
  font-style: normal;
  font-size: 11px;
  color: var(--brand-soft);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 1px 7px;
  flex: none;
}
.mf-audit b {
  margin-left: auto;
  font-size: 12px;
  color: var(--brand-soft);
  font-weight: 500;
}

/* ============================================================
   场景卡
   ============================================================ */
.sol-tag {
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--brand-gold);
  font-weight: 700;
  margin-bottom: 10px;
}
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 4px 0 14px;
}
.chips span {
  font-size: 12.5px;
  color: var(--brand-mute);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 12px;
  background: rgba(162, 170, 136, 0.06);
}

/* ============================================================
   安全
   ============================================================ */
.trust-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.t-item {
  border: 1px solid var(--line);
  border-left: 3px solid var(--brand-gold);
  border-radius: 12px;
  padding: 26px 28px;
  background: rgba(47, 53, 24, 0.5);
}
.t-item h4 {
  font-size: 18px;
  margin-bottom: 8px;
}
.t-item p {
  font-size: 14.5px;
  color: var(--brand-mute);
}

/* ============================================================
   关于
   ============================================================ */
.about-wrap {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 64px;
  align-items: center;
}
.about-copy h2 {
  font-size: clamp(28px, 3.6vw, 40px);
  margin: 18px 0 18px;
}
.about-copy p {
  color: var(--brand-mute);
  font-size: 16px;
  margin-bottom: 14px;
}
.about-en {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.26em;
  color: var(--brand-soft);
  margin-top: 4px;
}
.about-kw {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}
.about-kw span {
  font-size: 13.5px;
  letter-spacing: 0.28em;
  color: var(--brand-soft);
  border-bottom: 2px solid var(--brand-gold);
  padding: 0 2px 6px;
}
.about-visual {
  display: flex;
  justify-content: center;
}
.about-visual img {
  width: min(360px, 70%);
  opacity: 0.95;
  filter: drop-shadow(0 24px 60px rgba(0, 0, 0, 0.35));
}

/* ============================================================
   尾部 CTA
   ============================================================ */
.cta-band {
  position: relative;
  padding: 140px 0 180px;
  text-align: center;
  overflow: hidden;
  border-top: 1px solid var(--line);
  background: var(--brand-deep-2);
}
.cta-inner {
  position: relative;
  z-index: 2;
}
.cta-band h2 {
  font-size: clamp(30px, 4.4vw, 48px);
  margin-bottom: 14px;
}
.cta-band > .container > p,
.cta-inner > p {
  color: var(--brand-soft);
  font-size: 16px;
  margin-bottom: 34px;
}
.cta-band .cta-row {
  justify-content: center;
}
.cta-ripple {
  opacity: 0.12;
}

/* ============================================================
   页脚
   ============================================================ */
.footer {
  border-top: 1px solid var(--line);
  padding: 64px 0 0;
  background: var(--brand-deep);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}
.fo-slogan {
  margin-top: 16px;
  color: var(--brand-soft);
  font-size: 14px;
}
.fo-slogan em {
  font-style: normal;
  font-size: 11px;
  letter-spacing: 0.26em;
  color: var(--brand-soft);
}
.fo-title {
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--brand-soft);
  margin-bottom: 14px;
}
.fo-col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.fo-col a {
  display: block;
  color: var(--brand-mute);
  font-size: 14.5px;
  padding: 5px 0;
  transition: color 0.2s;
}
.fo-col a:hover {
  color: var(--brand-hi);
}
.footer-base {
  border-top: 1px solid var(--line);
  padding-top: 22px;
  padding-bottom: 26px;
  display: flex;
  justify-content: space-between;
  color: var(--brand-soft);
  font-size: 13px;
}

/* ============================================================
   Agent 产品目录 / 可信内核(P1A)
   ============================================================ */
[id] {
  scroll-margin-top: 84px;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--brand-gold);
  outline-offset: 4px;
}

.agent-cards {
  align-items: stretch;
}
.agent-card {
  display: flex;
  min-height: 480px;
  flex-direction: column;
}
.agent-card.agent-live {
  border-color: rgba(216, 160, 61, 0.58);
  box-shadow: inset 0 3px 0 var(--brand-gold);
}
.agent-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 28px;
}
.agent-index {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: var(--brand-soft-hi);
}
.agent-role {
  margin-bottom: 8px;
  font-size: 10px !important;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: var(--brand-gold-text) !important;
}
.agent-card h3 {
  margin-bottom: 16px;
  font-size: 28px;
}
.agent-card .chips {
  margin: 24px 0;
}
.agent-dependency {
  margin-top: auto;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 13px !important;
  color: var(--brand-soft-hi) !important;
}
.agent-dependency b {
  color: var(--brand-mute);
}
.agent-link {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid rgba(216, 160, 61, 0.32);
  color: var(--brand-gold-text);
  font-size: 14px;
  font-weight: 700;
}
.agent-link:hover {
  color: var(--brand-hi);
}

.status {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  min-height: 27px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  white-space: nowrap;
}
.status-live {
  border: 1px solid rgba(109, 180, 137, 0.54);
  background: rgba(47, 122, 79, 0.2);
  color: #aee1bd;
}
.status-roadmap {
  border: 1px solid rgba(216, 160, 61, 0.5);
  background: rgba(216, 160, 61, 0.12);
  color: #f0c777;
}
.status-center {
  border: 1px solid rgba(162, 170, 136, 0.45);
  background: rgba(162, 170, 136, 0.1);
  color: var(--brand-mute);
}

.copilot-note {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 22px;
  margin-top: 26px;
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(162, 170, 136, 0.06);
}
.copilot-note b {
  display: block;
  margin-bottom: 4px;
  font-size: 16px;
}
.copilot-note p {
  color: var(--brand-soft);
  font-size: 14px;
}

.proof-board {
  display: grid;
  gap: 10px;
}
.proof-title {
  display: flex;
  justify-content: space-between;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  color: var(--brand-mute);
  font-weight: 700;
}
.proof-title em {
  color: var(--brand-soft);
  font-size: 12px;
  font-style: normal;
  font-weight: 500;
}
.proof-row {
  display: grid;
  grid-template-columns: 58px 1fr auto;
  align-items: center;
  gap: 14px;
  min-height: 62px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(162, 170, 136, 0.06);
}
.proof-row > span {
  color: var(--brand-gold);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
}
.proof-row b {
  color: var(--brand-mute);
  font-size: 13.5px;
  font-weight: 500;
}
.proof-row i {
  font-size: 11px;
  font-style: normal;
  font-weight: 700;
  white-space: nowrap;
}
.proof-ok {
  color: #aee1bd;
}
.proof-warn {
  color: #f0c777;
}

.deployment-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 54px;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
}
.deployment-strip > div {
  display: flex;
  min-height: 132px;
  flex-direction: column;
  justify-content: center;
  gap: 14px;
  padding: 24px;
  background: rgba(47, 53, 24, 0.38);
}
.deployment-strip > div + div {
  border-left: 1px solid var(--line);
}
.deployment-strip b {
  color: var(--brand-mute);
  font-size: 14px;
  line-height: 1.65;
}

.harness-flow {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  background: var(--brand-deep-2);
}
.harness-flow span {
  display: flex;
  min-height: 130px;
  flex-direction: column;
  justify-content: center;
  gap: 7px;
  padding: 20px 16px;
  text-align: center;
}
.harness-flow span + span {
  border-left: 1px solid var(--line);
}
.harness-flow b {
  font-size: 14px;
  color: var(--brand-hi);
}
.harness-flow i {
  color: var(--brand-soft-hi);
  font-size: 11px;
  font-style: normal;
}
.harness-disclaimer {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 18px 0 36px;
  color: var(--brand-soft);
  font-size: 13px;
}
.sec-alt .eyebrow,
.sec-alt .sec-sub {
  color: var(--brand-soft-hi);
}
.scenario-cards .sol-tag {
  margin-bottom: 0;
}
.scenario-cards .agent-topline {
  align-items: flex-start;
  margin-bottom: 22px;
}
.cta-eyebrow {
  justify-content: center;
  margin-bottom: 22px;
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 960px) {
  .nav-links {
    position: fixed;
    inset: 72px 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(47, 53, 24, 0.97);
    border-bottom: 1px solid var(--line);
    padding: 12px 24px 24px;
    display: none;
  }
  .nav-links.open {
    display: flex;
  }
  html:not(.js) .nav-links {
    position: static;
    display: flex;
    flex-direction: row;
    padding: 0;
    border: 0;
    background: transparent;
  }
  html:not(.js) .nav-links > a:not(.btn) {
    display: none;
  }
  html:not(.js) .nav-links .btn {
    margin: 0;
  }
  .nav-links > a {
    padding: 13px 4px;
    font-size: 16px;
    border-bottom: 1px solid rgba(162, 170, 136, 0.08);
  }
  .nav-links > a:not(.btn)::after {
    display: none;
  }
  .nav-links .btn {
    margin-top: 16px;
  }
  .js .nav-burger {
    display: flex;
  }
  html:not(.js) .nav-burger {
    display: none;
  }
  .nav-burger.open span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  .nav-burger.open span:nth-child(2) {
    opacity: 0;
  }
  .nav-burger.open span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  .hero-inner {
    padding-top: 130px;
    padding-bottom: 120px;
  }
  #sailCanvas {
    opacity: 0.5;
  }
  .metrics-row {
    grid-template-columns: repeat(2, 1fr);
  }
  .cards-3 {
    grid-template-columns: 1fr;
  }
  .feature {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 44px 0;
  }
  .f-rev .f-copy {
    order: 1;
  }
  .f-rev .f-visual {
    order: 2;
  }
  .trust-grid {
    grid-template-columns: 1fr;
  }
  .about-wrap {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .about-visual {
    order: -1;
  }
  .about-visual img {
    width: 200px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .section {
    padding: 84px 0;
  }
  .deployment-strip {
    grid-template-columns: 1fr;
  }
  .deployment-strip > div {
    min-height: 104px;
  }
  .deployment-strip > div + div {
    border-left: 0;
    border-top: 1px solid var(--line);
  }
  .harness-flow {
    grid-template-columns: repeat(2, 1fr);
  }
  .harness-flow span {
    border-bottom: 1px solid var(--line);
  }
  .harness-flow span:nth-child(odd) {
    border-left: 0;
  }
  .harness-flow span:nth-last-child(-n + 2) {
    border-bottom: 0;
  }
}

@media (max-width: 600px) {
  .container,
  .nav-inner {
    padding-right: 18px;
    padding-left: 18px;
  }
  .brand {
    gap: 8px;
  }
  .brand-mark {
    width: 42px;
  }
  .brand-wordmark {
    width: 88px;
  }
  .brand-cn {
    font-size: 12px;
  }
  .hero-inner {
    padding-top: 118px;
    padding-bottom: 112px;
  }
  .hero h1 {
    font-size: clamp(38px, 11.6vw, 48px);
  }
  .hero-en {
    font-size: 11px;
    letter-spacing: 0.24em;
  }
  .lede {
    font-size: 16px;
  }
  .hero .cta-row {
    flex-direction: column;
  }
  .hero .cta-row .btn {
    width: 100%;
  }
  .metrics-row {
    gap: 0;
    padding-top: 24px;
    padding-bottom: 24px;
  }
  .metric {
    padding: 18px 8px;
  }
  .metric .num {
    font-size: 36px;
  }
  .metric p {
    font-size: 12px;
  }
  .section {
    padding: 70px 0;
  }
  .sec-head {
    margin-bottom: 42px;
  }
  .card {
    padding: 26px 22px;
  }
  .agent-card {
    min-height: 0;
  }
  .copilot-note {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .proof-row {
    grid-template-columns: 54px 1fr;
    gap: 8px;
  }
  .proof-row i {
    grid-column: 2;
  }
  .harness-flow {
    grid-template-columns: 1fr;
  }
  .harness-flow span + span {
    border-left: 0;
  }
  .harness-flow span,
  .harness-flow span:nth-last-child(-n + 2) {
    min-height: 92px;
    border-bottom: 1px solid var(--line);
  }
  .harness-flow span:last-child {
    border-bottom: 0;
  }
  .harness-disclaimer {
    align-items: flex-start;
    flex-direction: column;
  }
  .cta-band {
    padding: 100px 0 110px;
  }
  .cta-band .cta-row {
    flex-direction: column;
  }
  .cta-band .btn {
    width: 100%;
  }
  .about-kw {
    flex-wrap: wrap;
  }
}

/* 截图/调试:?still=1 时动效直达终态 */
.still .reveal,
.still .chat-demo [data-step] {
  opacity: 1;
  transform: none;
  transition: none;
}
.still .mf-bar i {
  transition: none;
  width: var(--w);
}
.still .ripple-drift,
.still .scroll-cue span {
  animation: none;
}
.still .hero {
  min-height: 820px;
}

/* ============================================================
   动效克制:尊重系统设置
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  /* ⚠️ 必须同时写 `.js .reveal`:入场态收进 `.js` 前缀后特异性变成 (0,2,0),而**媒体查询
     不加特异性**,单写 `.reveal`(0,1,0)会输给它、与源序无关 —— reduced-motion 访客
     反而重新拿到淡入位移,而且失去了 W19-3 本来要给所有人的兜底(自审拦下的)。 */
  .js .reveal,
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .ripple-drift,
  .scroll-cue span {
    animation: none;
  }
  .in .mf-bar i,
  .mf-bar i {
    transition: none;
    width: var(--w);
  }
  .chat-demo [data-step] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}